CN118577701A - Wing single-side straight edge belly variable cross-section longitudinal beam punching equipment - Google Patents

Abstract

The wing surface single-sided straight-edge belly variable-section longitudinal beam punching equipment includes a feeding device, a belly small punching main machine, a belly large punching main machine, a first wing surface punching main machine and a second wing surface punching main machine. The belly small punching main machine and the belly large punching main machine are arranged side by side, and the first wing surface punching main machine and the second wing surface punching main machine are arranged side by side. The lateral position of the longitudinal beam is appropriately adjusted according to the change of the variable-section width, and the position of the feeding assembly can be adjusted up and down and left and right according to the position of the longitudinal beam, so that the variable-section longitudinal beam with a straight edge on one side can be accurately delivered to the designated position. After the feeding is in place, the punching positioning device only needs to fix the position of the longitudinal beam so that the existing belly small punching main machine and other punching machines can accurately punch the web or wing plate of the longitudinal beam. The feeding device can also be called a feeding device. The feeding assembly can also be called a feeding clamp.

Description

Punching equipment for single-side straight edge ventral variable-section longitudinal beam of wing

Technical Field

The invention relates to the technical field of longitudinal beam processing, in particular to a device for punching holes in a longitudinal beam with a variable cross-section on a wing surface with a straight edge on one side and a belly surface.

Background Art

In the field of commercial vehicles, automobile chassis longitudinal beams are generally divided into equal-section longitudinal beams and variable-section longitudinal beams. Most of the longitudinal beams of light truck chassis are web-type variable-section longitudinal beams, and the processing technology mostly adopts plate punching + press forming. When punching, the longitudinal beam needs to be fed and positioned. However, the feeding devices of existing punching equipment are designed for equal-section longitudinal beams and are not suitable for feeding variable-section longitudinal beams. Moreover, during the processing of the longitudinal beam, the wing plates on both sides of the longitudinal beam need to be punched. For the variable-section longitudinal beam with a straight edge on one side, since the longitudinal beam itself has a large length dimension and the web of the longitudinal beam has width changes along its length, the existing punching equipment cannot make flexible position adjustments according to the cross-sectional changes of the longitudinal beam, and it is difficult to achieve accurate feeding of the longitudinal beam, which directly affects the punching accuracy of the longitudinal beam.

Summary of the invention

In order to solve the problem that the existing longitudinal beam punching equipment is not suitable for feeding longitudinal beams with variable cross-sections and cannot meet the feeding accuracy required for precise punching, the purpose of the present invention is to provide a longitudinal beam punching equipment, which can not only accurately feed longitudinally along the length direction of the longitudinal beam, but also flexibly adjust the position of the longitudinal beam in the transverse direction according to the width of the longitudinal beam cross-section, so that the punching main machines such as the small punching main machine on the belly of the punching equipment can accurately punch each side of the longitudinal beam.

The technical solution adopted by the present invention to solve its technical problems is: a single-sided straight-edge ventral variable-section longitudinal beam punching device for an airfoil, comprising a feeding device, a ventral small punching main machine, a ventral large punching main machine, a first airfoil punching main machine and a second airfoil punching main machine, the ventral small punching main machine and the ventral large punching main machine are arranged side by side, the first airfoil punching main machine and the second airfoil punching main machine are arranged side by side, a feeding device is arranged between the ventral large punching main machine and the first airfoil punching main machine, a feeding device is installed on the upper material side of the ventral small punching main machine, and a feeding device is installed on the lower material side of the second airfoil punching main machine, the feeding device comprises a frame assembly and a feeding assembly; the frame assembly comprises The frame has two tracks laid side by side on the frame, each track is equipped with a track slider, the track slider is connected to the bottom of the feeding assembly, the frame is provided with a frame cavity, a feeding power mechanism is horizontally installed in the frame cavity, the feeding power mechanism is connected to the feeding assembly, and drives the feeding assembly to reciprocate along the track; the feeding assembly includes a mounting seat, an adjustment mechanism and a feeding clamp; the mounting seat has a vertical plate, a side plate and a bottom plate, the bottom plate is connected to the track slider, a vertical cylinder is installed on the mounting seat, and a vertical buffer spring is installed on the piston rod of the vertical cylinder; the adjustment mechanism The whole mechanism comprises a connecting plate, two vertical slide rails are installed side by side on one side of the connecting plate, two vertical sliders are installed on each vertical slide rail, each vertical slider is connected to the vertical plate, and two groups of horizontal sliders are installed side by side on the other side of the connecting plate, the two groups of horizontal sliders are arranged horizontally, each group has two horizontal sliders, and each group of horizontal sliders cooperates with a horizontal slide rail; the vertical buffer spring is connected to the connecting plate through a connecting piece; the first cylinder and the transverse fine-tuning slide rail are horizontally installed on the connecting plate, the transverse fine-tuning slide rail is located between the two horizontal slide rails, a fine-tuning slider is arranged on the transverse fine-tuning slide rail, and the piston rod of the first cylinder is connected to the fine-tuning slider; the feeding clamp comprises a clamp body, each horizontal slide rail is fixedly connected to the clamp body, a jaw is provided at one end of the clamp body, an upper chuck and a lower chuck are installed at the jaw, a through hole is provided in the middle part of the clamp body, the fine-tuning slider is located in the through hole, two connecting rods are horizontally installed on the clamp body, the two connecting rods are respectively located on both sides of the through hole, each connecting rod is provided with a spring, and the two springs respectively cooperate with both sides of the horizontal direction of the fine-tuning slider.

The positive effect of the present invention is that the longitudinal beam punching equipment of the present invention is provided with a flexible feeding device, and its feeding assembly can appropriately adjust the transverse position of the longitudinal beam according to the change of the variable cross-section width during the longitudinal feeding process, and the position of the feeding assembly can be adjusted up and down and left and right according to the position of the longitudinal beam, and the variable cross-section longitudinal beam with a straight edge on one side can be accurately delivered to the designated position. After the feeding is in place, the punching positioning device only needs to fix the position of the longitudinal beam, so that the existing punching machine such as the belly small punching main machine can accurately punch the web or wing plate of the longitudinal beam. The feeding device can also be called a feeding device. The feeding assembly can also be called a feeding clamp.

The longitudinal beam punching device of the present invention can also be provided with a guide device 6 that can be positioned on both sides on the basis of the three-side punching device of the equal-section U-shaped beam. The guide device located on the feeding side is called the feeding support roller, and the guide device located on the unloading side is called the unloading support roller. The feeding support roller and the unloading support roller support and position the longitudinal beam. Multiple groups of feeding support rollers and unloading support rollers can be set according to the length of the longitudinal beam. Each group of support rollers has two horizontal rollers driven by a cylinder alone, and two vertical rollers driven by a cylinder alone. When the longitudinal beam processing reference surface is selected, the horizontal roller and the vertical roller on the corresponding side are pushed to the set position by the cylinder respectively, and used as the horizontal side positioning reference roller and the fixed vertical support roller during the longitudinal beam processing. At the same time, the horizontal roller and the vertical roller on the other side are used as the side pressure roller and the movable support roller. The side pressure roller and the movable support roller can automatically adjust their positions as the longitudinal beam position changes. During processing, the straight edge wing plate of the longitudinal beam is used as the processing reference surface of the longitudinal beam. The present invention is also provided with a positioning device that can be positioned on both sides and has an optional pressure roller, which can also be called a pressure guide device; and a feed clamp that can be positioned on both sides and has adjustable lateral positions of clamping jaws, which can automatically adjust and use corresponding positioning references according to the differences between the left and right longitudinal beams of the straight-side belly widened longitudinal beam of the single-sided wing surface, thereby realizing automatic processing of the straight-side belly widened longitudinal beam of the single-sided wing surface. The feed clamps all have a clamp body driven by a cylinder that can be adjusted in position in the lateral direction, and the clamp body can be positioned by a locking device after the cylinder is driven into place. The punching equipment of the present invention is highly flexible and is more convenient for the small-batch production of multiple types of longitudinal beams. The present invention can also solve the problem of large relative position deviation between the belly hole and the wing hole of the longitudinal beam of the light truck chassis.

The present invention can also solve the following problems of the prior art: because the prior art adopts the method of blanking first and then forming, the longitudinal beam wing hole needs to be calculated on the flat plate when designing the hole position, so the position deviation between the longitudinal beam belly hole and the wing hole is relatively large; and the calculation of the new specification longitudinal beam is laborious and cumbersome. The present invention can adopt an adjustable reference method to realize the three-sided punching of the wing surface single-sided straight edge belly surface variable cross-section longitudinal beam, which is highly flexible and easier to produce multiple types of longitudinal beams in small batches. The punching reference is consistent with the detection reference, and the hole position accuracy is higher.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the three-dimensional structure of the present invention, in which the left end is the feeding end and the right end is the unloading end; FIG2 is a front view of the feeding device; FIG3 is a right view of FIG2; FIG4 is a three-dimensional view of the mounting seat; FIG5 is a three-dimensional view of the mounting seat from another angle; FIG6 is a three-dimensional view of the adjustment mechanism; FIG7 is a three-dimensional view of FIG6 from another angle; FIG8 is a front view of the feeding assembly; FIG9 is a rear view of FIG8; FIG10 is a left view of FIG8; FIG11 is a top view of FIG8; FIG12 is a bottom view of FIG8; FIG13 is a three-dimensional view of the feeding assembly; FIG14 is a three-dimensional view of the positioning wheel mechanism; FIG15 is a three-dimensional view of FIG14 from another angle; FIG16 is a schematic diagram of the structure of the end-mounted belt tensioning adjustment mechanism of the present invention; FIG17 is a schematic diagram of the installation of the belt tensioning adjustment mechanism on the frame assembly; FIG18 is a front view of the belt tensioning adjustment mechanism; FIG19 is a A-A direction in FIG18 FIG20 is an enlarged view of the sectional view; FIG20 is an enlarged view of the view in the direction of B in FIG18; FIG21 is a schematic diagram of the belt being in a relaxed state when the mounting seat moves to the limit position; FIG22 is the feeding device; FIG23 is a stereoscopic view of the positioning device; FIG24 is a schematic diagram of a locking tongue mechanism arranged on a slide rail, a first vertical support frame and a positioning mechanism installed in a connected slider; FIG25 is a sectional view of the locking tongue mechanism; FIG26 is a structural schematic diagram of the positioning mechanism in the mounting groove; FIG27 is a schematic diagram of a state in which the first vertical support frame and the connected slider are locked by the locking tongue mechanism; and FIG28 is a sectional view in the direction of A-A in FIG26; FIG29 is a stereoscopic structural schematic diagram of a longitudinal beam to be processed, in which the left side of the longitudinal beam is a straight-edge wing plate, and the right side is a beveled wing plate. In actual processing, there is another longitudinal beam, the left side of which is a straight-edge wing plate, and the right side is a beveled wing plate. The present invention can perform punching processing on both types of longitudinal beams.

Reference numerals:

1 Feeding device 11 Frame assembly 110 Track 111 Track slider, 112 Lead screw, 113 Driving wheel, 114 Passive wheel, 115 Belt, 116 Nut, 117 Frame, 118 Frame cavity; 12 Feeding assembly 120 Mounting seat, 1200 Vertical plate, 1201 Bottom plate, 1202 Vertical cylinder 1203 Vertical buffer spring 1204 Side plate, 1205 Fixed wheel frame mounting groove; 121 Adjustment mechanism, 1210 Vertical slide rail, 1211 Vertical slider, 1212 Horizontal slide rail, 1213 Horizontal slider, 1214 Horizontal fine-tuning slide rail 1215 Connecting plate 1216 Cylinder seat 1217 Connecting piece; 122 Feeding clamp, 1220 Clamp body, 1221 Upper chuck, 1222 Lower chuck, 1223 Spring 1224 Connecting rod 1225 first cylinder 1226 through hole 1227 blind hole 1228 fine adjustment slider 1229 jaws; 123 positioning wheel mechanism, 1230 connecting seat, 1231 fixed wheel frame, 1232 second cylinder, 1233 movable wheel frame, 1234 first slider, 1235 first guide rail, 1236 vertical support wheel, 1237 wing plate pressure roller, 1238 first horizontal wheel. 13 belt tensioning adjustment mechanism, 130 guide sleeve, 131 conical sleeve, 132 insert sleeve, 133 long screw, 134 tensioning frame, 135 first tensioning wheel, 136 second tensioning wheel, 137 tensioning spring, 138 swing rod, 139 first wedge block, 1310 suspension rod, 1311 insert plate, 1312 long slot, 1313 short shaft, 1314 second wedge block. 14 longitudinal beam 1411 straight edge wing plate 1412 oblique edge wing plate 1413 web plate; 15 lifting mechanism 150 swing arm support 151 third cylinder 152 swing arm 153 swing arm pulley; 2 belly small punching main machine; 3 belly large punching main machine; 4 first wing surface punching main machine; 5 second wing surface punching main machine; 6 guide device; 7 positioning device; 71 pressure guide material bracket 710 installation cavity 711 slide rail 7 12 longitudinal beam mouth 713 web plate 714 straight edge wing plate 715 oblique edge wing plate; 72 first horizontal clamping mechanism 7 20 first external pressure cylinder 721 first horizontal wheel frame 722 first horizontal wheel 723 avoidance groove; 73 second horizontal clamping mechanism 730 second external pressure cylinder 731 second horizontal wheel frame 732 second horizontal wheel; 74 first vertical support roller wheel 740 first internal pressure cylinder 741 the first vertical support frame 742 the first horizontal roller 743 the first supporting roller 744 the mounting groove; 75 the second vertical supporting roller 750 the second internal pressure cylinder 751 the second vertical support frame 752 the second horizontal roller 753 the second supporting roller; 76 the first vertical pressing wheel group 760 the first vertical cylinder 761 the first vertical pressing wheel frame 762 the first vertical pressing wheel; 77 the second vertical pressing wheel group 770 the second vertical cylinder 771 the second vertical pressing wheel frame 772 the second vertical pressing wheel; 78 the locking tongue mechanism 780 the vertical sleeve 781 the locking tongue column 782 the inclined surface 783 the spring 784 the arc surface; 79 the positioning mechanism 790 the locking hole 791 the boss plate 792 the sliding plate 793 the connecting block 794 the shift fork 795 the shift rod 796 the vertical shaft 797 the cushion block.

DETAILED DESCRIPTION

The wing single-side straight-edge belly variable-section longitudinal beam punching device of the present invention comprises a feeding device 1, a belly small punching main machine 2, a belly large punching main machine 3, a first wing punching main machine 4 and a second wing punching main machine 5. The belly small punching main machine 2 and the belly large punching main machine 3 are arranged side by side, the first wing punching main machine 4 and the second wing punching main machine 5 are arranged side by side, a feeding device 1 is arranged between the belly large punching main machine 3 and the first wing punching main machine 4, a feeding device 1 is installed on the feeding side of the belly small punching main machine 2, and a feeding device 1 is installed on the unloading side of the second wing punching main machine 5. The first wing punching main machine 4 can be called a rear wing punching main machine. The second wing punching main machine 5 can be called a front wing punching main machine. The belly small punching main machine 2, the belly large punching main machine 3, the first wing punching main machine 4 and the second wing punching main machine 5 are all prior art.

As shown in FIG. 2 and FIG. 22 , the feeding device includes a frame assembly 11 and a feeding assembly 12. The frame assembly 11 includes a horizontally extending frame 117, on which two rails 110 are laid side by side. Each of the rails 110 is provided with a rail slider 111, and the rail slider 111 is connected to the bottom of the feeding assembly 12. As shown in FIG. 22 , a frame inner cavity 118 is provided in the frame 117, and a feeding power mechanism is horizontally installed in the frame inner cavity 118. The feeding power mechanism is connected to the feeding assembly 12 to drive the feeding assembly 12 to reciprocate along the rail 110.

As shown in FIG10 , the feeding assembly 12 includes a mounting seat 120, an adjustment mechanism 121 and a feeding clamp 122. As shown in FIG4 , the mounting seat 120 includes a vertical plate 1200, a side plate 1204 and a bottom plate 1201. The bottom plate 1201 is connected to the track slider 111. As shown in FIG13 , a vertical cylinder 1202 is installed on the mounting seat 120, and a vertical buffer spring 1203 is installed on the piston rod of the vertical cylinder 1202.

As shown in FIG6 , the adjustment mechanism 121 has a connecting plate 1215. Two vertical slide rails 1210 are installed side by side on one side of the connecting plate 1215, and two vertical sliders 1211 are installed on each vertical slide rail 1210. As shown in FIG9 , each vertical slider 1211 is connected to the vertical plate 1200. As shown in FIG7 , two groups of horizontal sliders 1213 are installed side by side on the other side of the connecting plate 1215, and the two groups of horizontal sliders 1213 are arranged horizontally, and each group has two horizontal sliders 1213, and each group of horizontal sliders 1213 cooperates with a horizontal slide rail 1212. As shown in FIG13 , the vertical buffer spring 1203 is connected to the connecting plate 1215 through a connecting piece 1217. The vertical movement cylinder 1202 can drive the connecting plate 1215 to move vertically. As shown in Fig. 10, the first cylinder 1225 and the transverse fine-tuning slide rail 1214 are horizontally mounted on the connecting plate 1215, and the transverse fine-tuning slide rail 1214 is located between the two horizontal slide rails 1212. A fine-tuning slider 1228 is arranged on the transverse fine-tuning slide rail 1214, and the piston rod of the first cylinder 1225 is connected to the fine-tuning slider 1228.

As shown in FIG9 , the feeding clamp 122 has a clamp body 1220, and each horizontal slide rail 1212 is fixedly connected to the clamp body 1220. As shown in FIG10 , a jaw 1229 is provided at one end of the clamp body 1220, and an upper clamp 1221 and a lower clamp 1222 are installed at the jaw 1229. The upper clamp 1221 can be a vertical cylinder. The extension and contraction of the piston rod of the cylinder can cooperate with the lower clamp 1222 to clamp or loosen the web of the longitudinal beam 14. A through hole 1226 is provided in the middle of the clamp body 1220, and a fine-tuning slider 1228 is located in the through hole 1226. Two connecting rods 1224 are horizontally installed on the clamp body 1220, and the two connecting rods 1224 are respectively located on both sides of the through hole 1226. Each connecting rod 1224 is provided with a spring 1223, and the two springs 1223 are respectively matched with both sides of the fine-tuning slider 1228 in the horizontal direction. The upper clamp 1221 and the lower clamp 1222 cooperate to tighten the cross section of the longitudinal beam. The first cylinder 1225 can drive the feeding clamp 122 to move horizontally relative to the connecting plate 1215 by driving the fine adjustment slider 1228. At the same time, the two springs 1223 cooperate with the fine adjustment slider 1228 respectively, so that the relative position of the feeding clamp 122 and the connecting plate 1215 can be basically determined, and the feeding clamp 122 can have a certain lateral fine adjustment displacement relative to the connecting plate 1215, so that when the feeding clamp 122 clamps and conveys the longitudinal beam 14 with a variable cross section, it can have a certain elastic displacement as the cross section of the longitudinal beam 14 becomes wider or narrower, thereby preventing the longitudinal beam 14 from having a rigid collision during the conveying process. The spring 1223, the connecting rod 1224, the first cylinder 1225, the through hole 1226, the blind hole 1227 and the fine adjustment slider constitute a locking device for locking the position of the clamp body 1220 relative to the connecting plate 1215. Furthermore, the locking device is a flexible lock.

In order to make the longitudinal beam 14 more evenly stressed during the conveying process, a lifting mechanism 15 is installed on the side of the frame 117, and the lifting mechanism 15 and the jaws 1229 are located on the same side of the frame 117. The lifting mechanism 15 has a swing arm support 150, which is connected to the frame 117. A swing arm 152 and a third cylinder 151 are hinged on the swing arm support 150. The piston rod of the third cylinder 151 is hinged to the lower end of the swing arm 152, and a swing arm pulley 153 is installed on the upper end of the swing arm 152. The third cylinder 151 can drive the swing arm 152 to swing up and down relative to the swing arm support 150 to support the longitudinal beam 14. When the feeding clamp 122 moves along the track 110, the third cylinder 151 can drive the swing arm 152 to flip downward to avoid the feeding clamp 122. When the feeding clamp 122 clamps the longitudinal beam 14 and passes through the lifting mechanism 15 , the third cylinder 151 can drive the swing arm 152 to flip upward, and the swing arm 152 and the swing arm pulley 153 can support the web of the longitudinal beam 14 .

Furthermore, as shown in Figure 22, the feeding power mechanism includes a lead screw 112 horizontally installed on the frame assembly 11, as shown in Figure 3, a nut 116 is threadedly installed on the lead screw 112, the nut 116 is connected to the bottom of the feeding frame 20, one end of the lead screw 112 is connected to a passive wheel 114, the passive wheel 114 is connected to a driving wheel 113 through a belt 115, the driving wheel 113 is driven by a motor, and the belt 115 drives the passive wheel 114 to rotate, driving the lead screw 112 to rotate, so that the nut 116 drives the feeding assembly 12 to move longitudinally relative to the frame assembly 11, the feeding assembly 12 has high movement accuracy and accurate feeding, which is convenient for the punching machine to accurately punch the variable-section longitudinal beam with a straight edge on one side after it is sent to the specified position.

Further, as shown in Fig. 7 and Fig. 13, the first cylinder 1225 and the transverse fine-tuning slide rail 1214 are installed on the connecting plate 1215, the transverse fine-tuning slide rail 1214 is located between the two horizontal slide rails 1212, and a fine-tuning slider 1228 is provided on the transverse fine-tuning slide rail 1214, the fine-tuning slider 1228 passes through the through hole on the clamp body 1220, and the fine-tuning slider 1228 is provided with a blind hole 1227 to facilitate the positioning of the spring. Two connecting rods 1224 are installed on the clamp body 1220, each connecting rod 1224 is provided with a spring 1223, and the two springs 1223 are respectively matched with the two sides of the fine-tuning slider 1228, and the first cylinder 1225 is connected to the fine-tuning slider 1228 through a piston rod. As shown in Figure 13, the first cylinder 1225 pushes the fine-tuning slider 1228 to move to the right. At this time, the fine-tuning slider 1228 compresses the spring 1223 on the right side to the right, and the spring 1223 on the right side drives the clamp body 1220 to move to the right; similarly, if the first cylinder 1225 pushes the fine-tuning slider 1228 to move to the left, the fine-tuning slider 22 compresses the spring 1223 on the left side to the left, thereby achieving accurate positioning of the horizontal position of the feeding clamp 122, and at the same time, the feeding clamp 122 can have a certain amount of activity within the elastic deformation range of the spring 1223.

Furthermore, since the longitudinal beam 14 with a variable cross-section and a straight side on one side is usually long and heavy, the feeding device is provided with a positioning wheel mechanism 123 to lift and guide the longitudinal beam. As shown in Figures 14 and 15, a fixed wheel frame 1231 is horizontally installed on the side plate 1204, and the fixed wheel frame 1231 is connected to the side plate 1204 through a connecting seat 1230. The fixed wheel frame 1231 is U-shaped, and a first horizontal wheel 1238 is installed at each end of the fixed wheel frame 1231, and a first guide rail 1235 is horizontally installed on the front and rear sides of the middle of the fixed wheel frame 1231, and a first slider 1234 is installed on each first guide rail 1235. A movable wheel frame 1233 is connected to each first slider 1234, and a vertical supporting wheel 1236 and a wing plate pressure roller 1237 are installed on each movable wheel frame 1233. A second cylinder 1232 is horizontally installed on the front and rear sides of the fixed wheel frame 1231, and the two second cylinders 1232 are connected to the two movable wheel frames 1233 one by one to drive the two movable wheel frames 1233 to reciprocate along their respective first guide rails 1235.

When the variable-section longitudinal beam with a straight side on one side is tightened by the upper clamp 1221 and the lower clamp 1222, since the variable-section longitudinal beam is very long and has a straight side on one side, in order to realize the lifting and guiding of the longitudinal beam, the first horizontal wheel 1238 contacts the outer side of the wing plate of the longitudinal beam 14, and the first slider 1234 is driven by the second cylinder 1232 to move horizontally on the first guide rail 1235, driving the movable wheel frame 1233 to move, and when the wing plate pressure rollers 1237 on both sides are in contact and pressed with the inner side of the wing plate of the longitudinal beam, the guiding positioning of the longitudinal beam is completed. At this time, the two vertical supporting wheels 1236 contact the inner side of the web of the longitudinal beam to realize the lifting of the longitudinal beam.

When the feeding clamp 122 drives the longitudinal beam 14 to move into position, the longitudinal beam 14 will be released, and then the feeding clamp 122 will reset under the drive of the mounting seat 120 to clamp the longitudinal beam next time. It is necessary to limit the movement of the mounting seat 120 on the track 110 to prevent the mounting seat 120 from driving the longitudinal beam beyond the set position and causing collision damage to the longitudinal beam or device to be processed. It is necessary to set a photoelectric switch on the side of the frame assembly 11, and set a detection plate that can be recognized by the photoelectric switch on the feeding assembly 12. The photoelectric switch is set in front of the limit position. Once the detection plate is recognized, the feeding of the mounting seat 120 will be stopped.

If the photoelectric switch fails, the parking function cannot be realized, and the device or the longitudinal beam may be damaged by collision, or the motor may be burned. To avoid the above situation, as shown in Figures 16 and 17, the frame assembly 11 is equipped with a belt tensioning adjustment mechanism 13 near the end of the belt 115. The belt tensioning adjustment mechanism 13 can adjust the belt 115 to two states: loose or tight. If the photoelectric switch fails, the mounting seat 120 moves beyond the set position, and the belt tensioning adjustment mechanism 13 can adjust the belt 115 to a loose state, unable to transmit power, and achieve the effect of parking, so as to facilitate subsequent inspection and maintenance. When the photoelectric switch does not fail and the mounting seat 120 does not move beyond the set position, the belt tensioning adjustment mechanism 13 will adjust the belt 115 to a tensioned state to ensure normal power transmission.

As shown in FIGS. 18-20 , the belt tensioning and adjusting mechanism 13 includes a guide sleeve 130 disposed at the end of the frame assembly 11. The guide sleeve 130 is arranged horizontally, and a conical sleeve 131 is installed on one end of the guide sleeve 130 away from the belt 115. The small diameter end of the conical sleeve 131 is located inside the guide sleeve 130, and the large diameter end of the conical sleeve 131 is located outside the guide sleeve 130. An insert sleeve 132 is vertically arranged at the end of the conical sleeve 131 extending out of the guide sleeve 130, and a threaded hole is provided at one end of the conical sleeve 131 located inside the guide sleeve 130.

A long screw rod 133 is installed in the threaded hole. One end of the long screw rod 133 extending out of the guide sleeve 130 is connected to a tensioning frame 134. The tensioning frame 134 is located at one end close to the belt 115. A first tensioning wheel 135 and a second tensioning wheel 136 are installed in the tensioning frame 134. The belt 115 is located between the first tensioning wheel 135 and the second tensioning wheel 136. The belt 115 can be tightened by the lateral movement of the tensioning frame 134. When the tensioning frame 134 moves away from the guide sleeve 130, the belt 115 can be tightened. When the tensioning frame 134 moves close to the guide sleeve 130, the belt 115 is in a relaxed state.

A tensioning spring 137 is sleeved on the outer periphery of the long screw 133 between the conical sleeve 131 and the end of the guide sleeve 130. The tensioning spring 137 always has a tendency to drive the tensioning frame 134 close to the guide sleeve 130 to put the belt 115 in a relaxed state.

In order to maintain the tension of the belt 115, that is, the conical sleeve 131 needs to be locked in the guide sleeve 130. To achieve the above function, a rotatable swing rod 138 is hingedly installed on the inner side of the frame at the bottom of the track 110. The end of the swing rod 138 located on the inner side is provided with a first wedge 139, and the end of the swing rod 138 located on the outer side is connected to a vertically arranged suspension rod 1310. The bottom of the suspension rod 1310 is provided with a plug plate 1311 that matches the plug sleeve 132. In order to ensure that the left-direction support force exerted by the plug plate 1311 on the plug sleeve 132 is strong enough in the locked state, a vertical guide sleeve can be fixedly installed on the frame 117, and the guide sleeve cooperates with the suspension rod 1310 to ensure that the suspension rod 1310 can only move vertically.

When the plug plate 1311 is located in the plug sleeve 132 , the conical sleeve 131 is positioned on the guide sleeve 130 , the tensioning spring 137 is in a compressed state, the tensioning frame 134 moves away from the guide sleeve 130 to tighten the belt 115 , and the driving wheel 113 can transmit power to the driven wheel 114 through the belt 115 .

Since the end of the swing rod 138 moves in an arc when it rotates, in order to ensure that the plug plate 1311 can be vertically lifted and lowered along the sleeve 132, a long groove 1312 is provided at the end of the swing rod 138 close to the suspension rod 1310, and a short shaft 1313 matching the long groove 1312 is provided on the suspension rod 1310. In this way, when the swing rod 138 rotates, it will drive the plug plate 1311 to move vertically in and out of the sleeve 132.

The weight of the suspension rod 1310 and the plug plate 1311 is greater than the weight of the first wedge block 139. Under the action of gravity, the plug plate 1311 always tends to enter the plug sleeve 132, that is, the conical sleeve 131 is locked in the guide sleeve 130, so that the belt 115 is tightened to ensure power transmission.

In order to stop the movement of the feeder head frame 20 once it moves beyond the set position after the photoelectric switch fails, the bottom of the feeder head frame 20 is installed with a second wedge block 1314 that matches the first wedge block 139, and the inclined surface of the second wedge block 1314 corresponds to the inclined surface of the first wedge block 139. When the mounting seat 120 moves to the limit position at the end of the frame assembly 11, as shown in FIG. 21, the first wedge block 139 can push the second wedge block 1314 to drive the swing rod 138 to rotate, so that the plug plate 1311 moves up and separates from the plug sleeve 132, and the tensioning spring 137 drives the tensioning frame 134 to move close to the guide sleeve 130 to make the belt 115 in a relaxed state. At this time, the driving wheel 113 cannot transmit power to the driven wheel 114 through the belt 115, that is, the machine can be stopped to prevent the device or the longitudinal beam from being damaged by collision.

The distance that the long screw 133 extends out of the tapered sleeve 131 can be adjusted by rotating the tapered sleeve 131. When the long screw 133 extends out of the tapered sleeve 131 to a greater extent, after the tapered sleeve 131 is positioned relative to the guide sleeve 130, the tensioning frame 134 is further away from the guide sleeve 130, and the belt 115 is more easily tightened, that is, the tensioning degree of the belt 115 can be changed by adjusting the length of the long screw 133 extending out of the tapered sleeve 131. The circumferential force between the tapered sleeve 131 and the guide sleeve 130 in contact can make the force on the tapered sleeve 131 itself more uniform when realizing the lateral movement guidance of the tapered sleeve 131, and can effectively extend the service life of the tapered sleeve 131.

The failure of the photoelectric switch is an accidental situation, so the above structure will always ensure that the belt 115 is in a tightened state when the device is operating normally, so that the power can be transmitted normally. Once the belt tensioning adjustment mechanism 13 takes effect and adjusts the belt 115 to a relaxed state and shuts down, the staff will inspect and maintain the device, move the mounting seat 120 to reset, and manually reset the cone sleeve 131, and re-insert the plug plate 1311 into the plug sleeve 132 to position and lock the cone sleeve 131, and re-adjust the belt 115 to a tightened state to deal with subsequent emergencies.

Taking the processing of a variable cross-section longitudinal beam with a straight-edge wing plate on the left side as an example, the feeding and punching working principle of the present invention is explained:

S1: As shown in Figure 2, first, the feeding power mechanism drives the feeding assembly 12 to move to the loading end of the frame 117, the longitudinal beam 14 enters the feeding device 1 at the loading end, and one end of the longitudinal beam 14 enters the jaws 1229, the vertical movement cylinder 1202 and the first cylinder 1225 adjust the feeding clamp 122 so that the longitudinal beam 14 is located in the feeding clamp 122 as shown in Figure 10. As shown in FIG15 , the first cylinder 1225 is adjusted to make the straight-edge wing plate on the left side of the longitudinal beam 14 contact the first horizontal wheel 1238 on the left side. In this processing process, the straight-edge wing plate on the left side is set as the processing reference surface; the upper clamp 1221 and the lower clamp 1222 cooperate to tighten the web of the longitudinal beam; thereafter, driven by the feeding power mechanism, the feeding assembly 12 drives the longitudinal beam 14 to move longitudinally to the belly small punching main machine 2 and the belly large punching main machine 3 in sequence, and the belly small punching main machine 2 and the belly large punching main machine 3 punch holes in the web in sequence;

S2: After the belly-surface large punching machine 3 punches holes, the longitudinal beam 14 is clamped by the feeding device 1 located between the belly-surface large punching machine 3 and the first wing-surface punching machine 4 and sequentially sent to the first wing-surface punching machine 4 and the second wing-surface punching machine 5 for punching holes; the action process of the feeding device 1 clamping and conveying the longitudinal beam 14 is the same as the action of the feeding device 1 in S1;

S3: After the first wing surface punching machine 4 and the second wing surface punching machine 5 punch holes on the wing panels on the left and right sides of the longitudinal beam in succession, the feeding device 1 at the unloading end clamps the longitudinal beam 14 and moves it out of the longitudinal beam punching device of the present invention.

A positioning device 7 is installed on both sides of the belly small punching main machine 2, the belly large punching main machine 3, the first wing punching main machine 4 or the second wing punching main machine 5. The positioning device 7 located on the feeding side can be called a left pressure guiding device, and the positioning device 7 located on the unloading side can be called a right pressure guiding device. Taking the belly small punching main machine 2 as an example, a left pressure guiding device and a right pressure guiding device are installed on its left and right sides respectively. In order to further improve the accuracy of the conveying longitudinal beam 14, a positioning device 7 can also be installed on the end corresponding to the belly small punching main machine 2. The positioning device can flexibly adjust the position of the clamping mechanism according to the different cross-sections of the variable cross-section longitudinal beam with a straight edge on one side, so as to achieve accurate fixation of different cross-sectional parts of the longitudinal beam, thereby further ensuring that the positioning position of the belly hole and the wing hole of the longitudinal beam does not deviate, and improving the punching accuracy. The left pressure guiding device and the right pressure guiding device guide and position the longitudinal beam. When the processing reference surface of the longitudinal beam 14 is selected, the horizontal roller and the vertical roller on the corresponding side are pushed to the set position by the cylinder respectively, and used as the horizontal side positioning reference roller and the fixed vertical support roller when processing the longitudinal beam. At the same time, the horizontal roller and the vertical roller on the other side are used as the side pressure roller and the movable support roller. The side pressure roller and the movable support roller can automatically adjust their positions as the position of the longitudinal beam changes. After the longitudinal beam 14 enters the positioning device 7, the lower pressure roller on the corresponding side moves downward to press the longitudinal beam. The specific structure and working principle of the positioning device 7 are as follows:

As shown in FIG. 23 , the positioning device includes a pressure-conducting material bracket 71, one side of the pressure-conducting material bracket 71 is an installation cavity 710, a slide rail 711 and a longitudinal beam opening 712 are arranged on the pressure-conducting material bracket 71, and a variable-section longitudinal beam with a straight edge on one side is inserted into the longitudinal beam opening 712 for fixation; a first horizontal clamping mechanism 72 and a second horizontal clamping mechanism 73 are symmetrically arranged on the pressure-conducting material bracket 71, a first vertical support roller 74 and a second vertical support roller 75 are symmetrically arranged, and a first vertical clamping wheel group 76 and a second vertical clamping wheel group 77 are symmetrically arranged; the first horizontal clamping mechanism 72 includes a first external pressure air Cylinder 720, the first external pressure cylinder 720 is connected to the first horizontal wheel 722 through the first horizontal wheel frame 721; the second horizontal clamping mechanism 73 includes a second external pressure cylinder 730, and the second external pressure cylinder 730 is connected to the second horizontal wheel 732 through the second horizontal wheel frame 731; the first horizontal wheel frame 721 and the second horizontal wheel frame 731 are respectively connected to the slider, and the slider moves on the slide rail 711 to drive the respective first horizontal wheel frame 721 and the second horizontal wheel frame 731 to move, so as to realize the first horizontal wheel 722 and the second horizontal wheel 732 to move in the horizontal direction;

As shown in FIG. 23 , the first vertical support roller 74 includes a first internal pressure cylinder 740, which is connected to a first horizontal roller 742 and a first supporting wheel 743 via a first vertical support frame 741; the second vertical support roller 75 includes a second internal pressure cylinder 750, which is connected to a second horizontal roller 752 and a second supporting wheel 753 via a second vertical support frame 751; the first vertical supporting frame 741 and the second vertical supporting frame 751 are respectively connected to a slider, which moves on the slide rail 711 through the slider to drive the respective first vertical supporting frame 741 and the second vertical supporting frame 751 to move, thereby realizing the horizontal movement of the first horizontal roller 742, the first supporting wheel 743, the second horizontal roller 752 and the second supporting wheel 753;

As shown in Figure 23, the first vertical pressing wheel group 76 includes a first vertical cylinder 760, which drives the first vertical pressing wheel 762 to move up and down through the first vertical pressing wheel frame 761; the second vertical pressing wheel group 77 includes a second vertical cylinder 770, which drives the second vertical pressing wheel 772 to move up and down through the second vertical pressing wheel frame 771.

When punching after the positioning device is installed in the present invention, as shown in Figure 23, the feeding device 1 at the loading end drives the longitudinal beam to move longitudinally, and one end of the longitudinal beam is successively inserted into the longitudinal beam openings of the positioning devices on both sides of the ventral small punching main machine 2, and each positioning device 7 is adjusted so that the first horizontal wheel 722, the first horizontal roller 742 and the second horizontal roller 752 are driven by the first internal pressure cylinder 740 and the second internal pressure cylinder 750 to stop on the left side, and the straight edge wing plate 1411 on the left side of the longitudinal beam is clamped by the first horizontal wheel 722 and the first horizontal roller 742, the second horizontal wheel 732 is driven by the second external pressure cylinder 730 to stop on the right side, and the first vertical pressure wheel 762 and the second vertical pressure wheel 772 are lifted up by the first vertical cylinder 760 and the second vertical cylinder 770 respectively and stay at the highest position.

When punching, in the horizontal direction, the first horizontal wheel 722 and the first horizontal roller 742 clamp the straight edge wing plate 1411 of the longitudinal beam and keep it stationary, the second horizontal roller 752 and the second horizontal wheel 732 respectively serve as mobile support rollers and side pressure rollers, and are driven by the second internal pressure cylinder 750 and the second external pressure cylinder 730 to automatically adjust their positions as the width of the longitudinal beam changes. In the vertical direction, the first vertical pressure wheel 762 is first driven downward by the first vertical cylinder 760 to be pressed onto the outer belly surface of the longitudinal beam, and cooperates with the first supporting wheel 743 to vertically press and fix the longitudinal beam. At the same time, the second vertical pressure wheel 772 can be driven downward by the first vertical cylinder 770 to be pressed onto the outer belly surface of the longitudinal beam, and cooperates with the second supporting wheel 753 to vertically press and fix the longitudinal beam. At this time, the position of the longitudinal beam is fixed and its web can be punched. After the punching is completed, the longitudinal beam is moved forward by the feeding device 1 for a certain distance, so that the longitudinal beam is successively inserted into the positioning devices 7 on both sides of the belly large punching main machine 3 and fixed. The fixing process of the positioning device 7 is the same as the fixing process of the positioning devices 7 on both sides of the belly small punching main machine 2. If the cross section of the longitudinal beam becomes wider, the positions of the first horizontal roller 742 and the first horizontal wheel 722 remain unchanged to keep the reference plane unchanged, and the second horizontal roller 752 and the second horizontal wheel 732 are adjusted to move to the right. The moving distance is based on the change in the cross section of the longitudinal beam. At this time, the positioning work of another position of the longitudinal beam is completed. When the longitudinal beam moves forward and backward in the longitudinal direction so that the lateral position of the bevel wing plate 715 corresponding to the positioning device changes, the above operation can be repeated to perform punching positioning.

Furthermore, in order to allow the first vertical support roller 74 in the left position to be stably set on the slide rail 711 when used as the reference side to prevent the horizontal movement of the first horizontal roller 742 and the first support wheel 743 caused by misoperation, as shown in Figure 24, a locking tongue mechanism 78 is installed on the slide rail 711, and a positioning mechanism 79 that cooperates with the locking tongue mechanism 78 is installed in the first vertical support frame 741 and the connected slider. When the first vertical support frame 741 and the connected slider move to the position of the locking tongue mechanism 78, the locking tongue mechanism 78 can lock the first vertical support frame 741 and the connected slider.

As shown in FIG. 25 , the locking tongue mechanism 78 includes a vertical sleeve 780 disposed in the slide rail 711, a locking tongue column 781 is mounted in the vertical sleeve 780, a top surface of the locking tongue column 781 is provided with an inclined surface 782, and a spring 783 is provided at the bottom of the locking tongue column 781, and the spring 783 always has a tendency to push the inclined surface 782 upward out of the slide rail 711. When the first vertical support frame 741 and the connected slider move close to the locking tongue mechanism 78, they can contact the inclined surface 782 and overcome the elastic force of the spring 783 to allow the locking tongue column 781 to fully enter the vertical sleeve 780.

In order to unlock the locking tongue mechanism 78 when the first vertical support frame 741 moves, a mounting groove 744 is provided in the first vertical support frame 741 and the connected slider, and a locking hole 790 is provided in the mounting groove 744 of the slider to match the locking tongue column 781. A boss plate 791 is provided at the bottom of the mounting groove 744, and a sliding plate 792 is mounted on the boss plate 791. The sliding plate 792 can move on the boss plate 791 from one side wall position of the mounting groove 744 to the other side wall position.

A connecting block 793 is provided at one end of the sliding plate 792 extending out of the mounting groove 744. The connecting block 793 is connected to the piston rod of the first internal pressure cylinder 740. When the piston rod is extended or retracted, it can synchronously drive the sliding plate 792 to move. A shift fork 794 is also installed on the sliding plate 792. A shift rod 795 is hingedly installed in the mounting groove 744. A vertical shaft 796 cooperating with the shift fork 794 is provided at one end of the shift rod 795. The other end of the shift rod 795 is located on one side of the locking hole 790.

The extension of the piston rod of the first internal pressure cylinder 740 can first drive the sliding plate 792 to move relative to the boss plate 791, allowing the fork 794 to drive the lever 795 to rotate and contact the inclined surface 782 and push the lock tongue column 781 away from the locking hole 790. After the sliding plate 792 moves to the side wall of the mounting groove 744, the unlocked first vertical support frame 741 and the connected slider can be moved along the slide rail 711 driven by the first internal pressure cylinder 740.

In order to prevent the arrangement of the locking tongue mechanism 78 on the slide rail 711 from affecting the normal movement of the first horizontal wheel frame 721, an avoidance groove 723 cooperating with the locking tongue column 781 is provided on the first horizontal wheel frame 721 and the connected sliding block.

When the first horizontal clamping mechanism 72, the second horizontal clamping mechanism 73, the first vertical support roller 74 and the second vertical support roller 75 are moved with the left side of the slide rail 711 as the reference side, the first horizontal wheel frame 721 of the first horizontal clamping mechanism 72 moves to the leftmost position of the slide rail 711. Due to the setting of the avoidance groove 723, the locking tongue column 781 extending out of the slide rail 711 will not interfere with the movement of the first horizontal wheel frame 721. Then, the piston rod of the first internal pressure cylinder 740 is contracted, driving the first vertical support frame 741 and the connected slider to move closer to the lock tongue column 781. In the process of moving closer, they come into contact with the inclined surface 782 at the top of the lock tongue column 781, and squeeze the lock tongue column 781 into the vertical sleeve 780. When the locking hole 790 moves to the position of the lock tongue column 781, under the elastic force of the spring 783, the lock tongue column 781 extends into the locking hole 790, completing the positioning and locking of the first vertical support frame 741 and the connected slider.

During the above-mentioned leftward movement, the sliding plate 792 is attached to the left side of the installation groove 744, and the lever 795 is in the state shown in FIG. 26 , which will not interfere with the extension of the lock tongue column 781 .

When you want to release the above-mentioned locking state, that is, to let the first vertical support frame 741 and the connected slider move on the slide rail 711 and separate from the lock tongue mechanism 78, you only need to extend the piston rod of the first internal pressure cylinder 740 to drive the sliding plate 792 to move to the right side wall position of the installation groove 744. At this time, the lever 795 rotates to contact the inclined surface 782 at the top of the lock tongue column 781, overcoming the elastic force of the spring 783 to allow the lock tongue column 781 to enter the vertical sleeve 780, thereby releasing the lock on the first vertical support frame 741 and the connected slider. After the sliding plate 792 moves to the right side wall of the installation groove 744, the sliding plate 792 and the first vertical support frame 741 become one, and the piston rod continues to extend to drive the first vertical support frame 741 to move right on the slide rail 711.

Furthermore, in order to reduce the contact area between the bottom surface of the lever 795 and the mounting groove 744 and reduce the friction between them, so as to ensure that the lever 795 can be smoothly rotated and unlocked under the drive of the shift fork 794, a cushion block 797 is provided at the bottom of the lever 795. If the cushion block 797 is provided at the bottom of the lever 795, it is equivalent to raising the lever 795 by a certain distance on the basis of the original position. During the rotation of the lever 795, the lock tongue column 781 cannot be completely squeezed into the vertical sleeve 780, and a small part of the lock tongue column 781 exposed from the vertical sleeve 780 will interfere with the horizontal movement of the first vertical support frame 741 and the connecting slider.

To solve the above problem, a curved surface 784 is provided on the side of the lock tongue column 781 away from the lever 795. After the pad 797 is added, the lever 795 rotates to press the lock tongue column 781 into the vertical sleeve 780 for a certain distance, and the curved surface 784 on the top of the lock tongue column 781 is exposed outside the vertical sleeve 780. When the first vertical support frame 741 and the connected slider move, they can contact the curved surface 784 and press the lock tongue column 781 completely into the vertical sleeve 780. At this time, the small part of the lock tongue column 781 exposed outside the vertical sleeve 780 will not interfere with the horizontal movement of the first vertical support frame 741 and the connected slider.

As shown in FIG. 29 , the variable-section longitudinal beam with a straight edge on one side includes a web 713 , a straight-edge wing plate 714 on one side of the web 713 , and a bevel-edge wing plate 715 on the other side of the web 713 .

In summary, the positioning device of the present invention realizes the horizontal positioning of the variable-section longitudinal beam with a straight side to be punched through the cooperation of the first horizontal clamping mechanism and the first vertical support roller, the second vertical support roller and the second horizontal clamping mechanism, and realizes the vertical positioning through the first vertical clamping wheel group and the second vertical clamping wheel group. It is not limited by the cross-sectional width of the longitudinal beam, the positions of the belly hole and the wing hole of the longitudinal beam will not deviate, and the punching accuracy is high.

The technical solution of the present invention is not limited to the scope of the embodiments described in the present invention. The technical contents not described in detail in the present invention are all well-known technologies.

Claims (10)

1. The utility model provides a longeron of airfoil unilateral straight flange ventral surface variable cross section equipment of punching a hole, including material feeding unit (1), ventral surface is little to punch a hole host computer (2), ventral surface is big to punch a hole host computer (3), first airfoil is punched a hole host computer (4) and second airfoil is punched a hole host computer (5), ventral surface is little to punch a hole host computer (2) and ventral surface is big to punch a hole host computer (3) and set up side by side, ventral surface is punched a hole and is set up a material feeding unit (1) between host computer (3) and first airfoil host computer (4) that punches a hole, a material feeding unit (1) is installed to the material loading side that ventral surface is little to punch a hole host computer (2), a material feeding unit (1) is installed to the unloading side of second airfoil host computer (5), its characterized in that: the feeding device (1) comprises a frame assembly (11) and a feeding assembly (12); the frame assembly (11) comprises a frame (117), two rails (110) are paved on the frame (117) side by side, each rail (110) is provided with a rail sliding block (111), each rail sliding block (111) is connected with the bottom of the feeding assembly (12), a frame inner cavity (118) is arranged in the frame (117), a feeding power mechanism is horizontally installed in the frame inner cavity (118), the feeding power mechanism is connected with the feeding assembly (12), and the feeding assembly (12) is driven to reciprocate along the rails (110);

the feeding assembly (12) comprises a mounting seat (120), an adjusting mechanism (121) and a feeding clamp (122);

The mounting seat (120) is provided with a vertical plate (1200), a side plate (1204) and a bottom plate (1201), the bottom plate (1201) is connected with the track sliding block (111), the mounting seat (120) is provided with a vertical moving cylinder (1202), and a piston rod of the vertical moving cylinder (1202) is provided with a vertical buffer spring (1203);

the adjusting mechanism (121) is provided with a connecting plate (1215), two vertical sliding rails (1210) are arranged on one side of the connecting plate (1215) side by side, two vertical sliding blocks (1211) are respectively arranged on each vertical sliding rail (1210), each vertical sliding block (1211) is connected with a vertical plate (1200), two groups of horizontal sliding blocks (1213) are arranged on the other side of the connecting plate (1215) side by side, the two groups of horizontal sliding blocks (1213) are horizontally arranged, each group of horizontal sliding blocks (1213) is provided with two horizontal sliding blocks (1213), and each group of horizontal sliding blocks (1213) is matched with one horizontal sliding rail (1212); the vertical buffer spring (1203) is connected with the connecting plate (1215) through a connecting piece (217); a first air cylinder (1225) and a transverse fine-tuning slide rail (1214) are horizontally arranged on the connecting plate (1215), the transverse fine-tuning slide rail (1214) is positioned between the two horizontal slide rails (1212), a fine-tuning slide block (1228) is arranged on the transverse fine-tuning slide rail (1214), and a piston rod of the first air cylinder (1225) is connected with the fine-tuning slide block (1228);

The feeding clamp (122) is provided with a clamp main body (1220), each horizontal sliding rail (1212) is fixedly connected with the clamp main body (1220), a jaw (1229) is arranged at one end of the clamp main body (1220), an upper chuck (1221) and a lower chuck (1222) are arranged at the jaw (1229), a through hole (1226) is arranged in the middle of the clamp main body (1220), a fine adjustment slider (1228) is arranged in the through hole (1226), two connecting rods (1224) are horizontally arranged on the clamp main body (1220), the two connecting rods (1224) are respectively arranged on two sides of the through hole (1226), a spring (1223) is respectively arranged on each connecting rod (1224), and the two springs (1223) are respectively matched with two sides of the fine adjustment slider (1228) in the horizontal direction.

2. The airfoil single-sided straight-sided ventral variable-section stringer punching apparatus of claim 1, wherein: the feeding power mechanism comprises a screw rod (112) horizontally arranged in the frame assembly (11), a nut (116) is arranged on the screw rod (112), and the nut (116) is connected with the bottom of the bottom plate (1201); one end of the screw rod (112) is connected with a driven wheel (114), the driven wheel (114) is connected with a driving wheel (113) through a belt (115), and the driving wheel (113) is driven by a motor.

3. The airfoil single-sided straight-sided ventral variable-section stringer punching apparatus of claim 1, wherein: two sides of the fine adjustment sliding block (1228) are respectively provided with a blind hole (1227), and the two blind holes (1227) are matched with the two springs (1223) in a one-to-one correspondence manner.

4. The airfoil single-sided straight-sided ventral variable-section stringer punching apparatus of claim 1, wherein: fixed wheel frames (1231) are horizontally arranged on the side plates (1204), the fixed wheel frames (1231) are connected with the side plates (1204) through connecting seats (1230), the fixed wheel frames (1231) are U-shaped, two ends of each fixed wheel frame (1231) are respectively provided with a first horizontal wheel (1238), the front side and the rear side of the middle part of each fixed wheel frame (1231) are respectively horizontally provided with a first guide rail (1235), each first guide rail (1235) is respectively provided with a first sliding block (1234), each first sliding block (1234) is respectively connected with a movable wheel frame (1233), each movable wheel frame (1233) is provided with a vertical riding wheel (1236) and a wing plate compression roller (1237), the front side and the rear side of each fixed wheel frame (1231) are respectively horizontally provided with a second air cylinder (1232), and the two second air cylinders (1232) are connected with the two movable wheel frames (1233) in a one-to-one correspondence mode so as to drive the two movable wheel frames (1233) to reciprocate along the respective first guide rails (1235).

5. The airfoil single-sided straight-sided ventral variable-section stringer punching apparatus of claim 2, wherein: the end of the frame assembly (11) close to the belt (115) is provided with a belt tensioning and adjusting mechanism (13), the belt tensioning and adjusting mechanism (13) comprises a guide sleeve (130) arranged at the end of the frame assembly (11), one end of the guide sleeve (130) far away from the belt (115) is provided with a conical sleeve (131) in a matched mode, the end of the conical sleeve (131) extending out of the guide sleeve (130) is vertically provided with a plug bush (132), one end of the conical sleeve (131) positioned in the guide sleeve (130) is provided with a threaded hole, A long screw rod (133) is cooperatively arranged in the threaded hole, one end of the long screw rod (133) extending out of the guide sleeve (130) is connected with a tensioning frame (134), a first tensioning wheel (135) and a second tensioning wheel (136) are arranged in the tensioning frame (134), the belt (115) is positioned between the first tensioning wheel (135) and the second tensioning wheel (136), a tensioning spring (137) is sleeved on the periphery of the long screw rod (133) between the conical sleeve (131) and the end part of the guide sleeve (130), the tensioning spring (137) always has a trend of driving the tensioning frame (134) to be close to the guide sleeve (130) to enable the belt (115) to be in a loose state, A rotatable swing rod (138) is hinged on the inner side of a rack at the bottom of the track (110), a first wedge block (139) is arranged at the end part of the swing rod (138) positioned on the inner side, a vertically arranged suspension rod (1310) is connected at the end part of the swing rod (138) positioned on the outer side, a plugboard (1311) matched with the plugboard (132) is arranged at the bottom of the suspension rod (1310), when the plugboard (1311) is positioned in the plugboard (132), the conical sleeve (131) is positioned on the guide sleeve (130), the tensioning spring (137) is in a compressed state, the tensioning frame (134) moves away from the guide sleeve (130) to tension the belt (115), The driving wheel (113) can transmit power to the driven wheel (114) through the belt (115), the end part of the swing rod (138) close to the suspension rod (1310) is provided with a strip groove (1312), the suspension rod (1310) is provided with a short shaft (1313) matched with the strip groove (1312), the weight of the suspension rod (1310) and the insert plate (1311) is larger than that of the first wedge block (139), the insert plate (1311) always has a trend of entering the insert sleeve (132) under the action of gravity, the bottom of the material machine head frame (120) is provided with a second wedge block (1314) matched with the first wedge block (139), The inclined plane of the second wedge block (1314) corresponds to the inclined plane of the first wedge block (139), when the mounting seat (120) moves to the limit position of the end part of the frame assembly (11), the first wedge block (139) can push the second wedge block (1314) to drive the swing rod (138) to rotate, the plugboard (1311) moves upwards to be separated from the plug bush (132), the tensioning spring (137) drives the tensioning frame (134) to move close to the guide sleeve (130) to enable the belt (115) to be in a loose state, and the driving wheel (113) cannot transmit power to the driven wheel (114) through the belt (115).

6. The airfoil single-sided straight-sided ventral variable-section stringer punching apparatus of claim 1, wherein: the upper chuck (1221) is a vertical cylinder.

7. The airfoil single-sided straight-sided ventral variable-section stringer punching apparatus of claim 1, wherein: the ventral small punching host machine (2), the ventral large punching host machine (3), the first airfoil punching host machine (4) or the second airfoil punching host machine (5) are respectively provided with a positioning device (7), the positioning devices (7) comprise guide and pressing support frames (701), one sides of the guide and pressing support frames (701) are provided with mounting cavities (710), sliding rails (711) and longitudinal beam passing openings (712) are arranged on the guide and pressing support frames (701), and the sliding rails (711) are positioned below the longitudinal beam passing openings (712);

a first horizontal pressing mechanism (702) and a second horizontal pressing mechanism (703) are symmetrically arranged on the guide and pressing bracket (701), the first vertical supporting roller (704) and the second vertical supporting roller (705) are symmetrically arranged, and the first vertical pressing wheel set (706) and the second vertical pressing wheel set (707) are symmetrically arranged;

The first horizontal pressing mechanism (702) comprises a first external pressing cylinder (720), and the first external pressing cylinder (720) is connected with a first horizontal wheel (722) through a first horizontal wheel frame (721); the second horizontal pressing mechanism (703) comprises a second external pressing cylinder (730), and the second external pressing cylinder (730) is connected with a second horizontal wheel (732) through a second horizontal wheel frame (731); the first horizontal wheel frame (721) and the second horizontal wheel frame (731) are respectively connected with a sliding block, and are in sliding fit with the sliding rail (711) through the sliding blocks, so that the first horizontal wheel (722) and the second horizontal wheel (732) move in the horizontal direction;

The first vertical supporting roller (704) comprises a first internal pressure cylinder (740), and the first internal pressure cylinder (740) is connected with a first horizontal roller (742) and a first riding wheel (743) through a first vertical supporting frame (741); the second vertical supporting roller (705) comprises a second internal pressure cylinder (750), and the second internal pressure cylinder (750) is connected with a second horizontal roller (752) and a second riding wheel (753) through a second vertical supporting frame (751); the first vertical supporting frame (741) and the second vertical supporting frame (751) are respectively connected with a sliding block, and are matched with the sliding rail (711) through the sliding blocks, so that the first horizontal roller (742), the first riding wheel (743), the second horizontal roller (752) and the second riding wheel (753) move in the horizontal direction;

The first vertical pressing wheel set (706) comprises a first vertical air cylinder (760), and the first vertical air cylinder (760) is provided with a first vertical pressing wheel (762) through a first vertical pressing wheel frame (761); the second vertical pressing wheel set (707) comprises a second vertical cylinder (770), and the second vertical cylinder (770) is provided with a second vertical pressing wheel (772) to move up and down through a second vertical pressing wheel frame (771).

8. The airfoil single-sided straight-sided ventral variable-section stringer punching apparatus of claim 7, wherein: two first vertical pinch rollers (762) are arranged on the first vertical pinch roller frame (761) side by side; two second vertical pinch rollers (772) are arranged on the second vertical pinch roller frame (771) side by side.

9. The airfoil single-sided straight-sided ventral variable-section stringer punching apparatus of claim 7, wherein: the utility model discloses a piston rod (792) is equipped with a connecting block (792), a piston rod (792) is equipped with a connecting block (792) and a connecting rod (792), a spring bolt mechanism (708) is installed on slide rail (711), install spring bolt mechanism (708) in first vertical support frame (741) and the slider of connection, install in spring bolt mechanism (709) with spring bolt mechanism (708) matched with, wherein spring bolt mechanism (708) is including setting up in slide rail (711) stand sleeve (780), install spring bolt post (781) in stand sleeve (780) interior cooperation, the top surface of spring bolt post (781) is equipped with inclined plane (782), spring (783) bottom is equipped with spring (781), the trend of pushing out inclined plane (782) upwards all the time, first vertical support frame (741) and the slider of connection move when being close to spring bolt mechanism (708), can be contacted with inclined plane (782) and overcome spring (783) elasticity and let spring bolt post (781) fully enter into stand sleeve (780), install mounting groove (744) in first vertical support frame (741) and the slider interior matched with in mounting groove (744), be equipped with locking hole (790) in slider's mounting groove (744), bottom of mounting groove (791) is equipped with spring bolt post (781), the trend upward from top surface (783), the trend is upwards pushes out of inclined plane (782) upwards towards the slide rod upwards, when connecting rod is connected with a piston rod (792, still install shift fork (794) on sliding plate (792), install driving lever (795) in mounting groove (744) articulated, one end of driving lever (795) is equipped with and shifts (794) matched with vertical scroll (796), the other end of driving lever (795) is located locking hole (790) one side, the piston rod of first interior pressure cylinder (740) stretches out can drive sliding plate (792) relatively boss board (791) and remove earlier, let shift fork (794) drive driving lever (795) rotate and contact with inclined plane (782) and push away spring bolt post (781) from locking hole (790), after sliding plate (792) moved to the lateral wall of mounting groove (744), first vertical support frame (741) and the slider of connection of releasing the lock can be followed slide rail (711) and removed under the drive of first interior pressure cylinder (740), wherein set up on first horizontal wheel carrier (721) and the slider of connection and dodge groove (723) with spring bolt post (781) matched with.

10. The airfoil single-sided straight-sided ventral variable-section stringer punching apparatus of claim 9, wherein: the bottom of driving lever (795) is equipped with cushion (797), and one side that driving lever (795) was kept away from to spring bolt post (781) is equipped with cambered surface (784), and after driving lever (795) rotated and impressed spring bolt post (781) a section distance in standing sleeve (780), can contact with cambered surface (784) when first vertical support frame (741) and the slider of connection removed to impress spring bolt post (781) in standing sleeve (780) completely.