CN117800055A - An automatic positioning device - Google Patents

Abstract

The invention discloses an automatic positioning device, which comprises: a base; the first cylinder is arranged on the base; the overturning bracket comprises a lever part and an overturning frame connected with the lever part; the lever part is rotatably connected with the base, and one end of the lever part is hinged with a piston rod of the first cylinder; the feeding push rod is connected with the other end of the lever part through the first transmission component; the third cylinder is arranged on the roll-over stand; the second cylinder bracket is connected with a piston rod of the third cylinder so as to linearly reciprocate along with the expansion and contraction of the piston rod of the third cylinder, and a supporting block is fixedly arranged on the second cylinder bracket; the second cylinder is arranged on the second cylinder bracket, a piston rod of the second cylinder is connected with the positioning assembly through the second transmission assembly, and the positioning assembly is switched between a closing station and an opening station along with the expansion and contraction of the piston rod of the second cylinder, wherein the positioning assembly and the supporting block work piece to be positioned are combined in the closing station to clamp.

Description

An automatic positioning device

Technical field

The present invention relates to a mechanical device, and in particular to a device for positioning a workpiece.

Background technique

The automatic measuring machine for connecting rod products is the last process step in the entire connecting rod product processing process. The entire processing process is not completed until the connecting rod products are measured and weighed on the automatic measuring machine.

In order to measure the connecting rod products on the automatic measuring machine, the connecting rod products need to be transported to the measuring station.

At present, manual handling is mostly used to transport connecting rod products to automatic measuring machines, but this method has low production efficiency.

In addition, in some more advanced existing technologies, robots or mechanical arms are used to transport connecting rod products to automatic measuring machines. However, in actual use, the operation effect of this mechanism is not ideal, and during the transportation process, problems often occur. It is not smooth and easy to be damaged. It has many faults and requires frequent repairs, which affects the normal operation of the automatic measuring machine.

Summary of the invention

The purpose of the present invention is to provide an automatic positioning device that can be used in conjunction with an automatic measuring machine for connecting rod products to solve the problems of low efficiency or high cost of existing solutions.

In order to achieve the above objects, the present invention proposes an automatic positioning device, which includes:

Fixed setting base;

A first cylinder located on the base;

The flip bracket comprises a lever part and a flip frame connected to the lever part; the middle part of the lever part is rotatably connected to the base through a lever part rotating shaft, and one end of the lever part is hinged to the piston rod of the first cylinder, so that the flip frame can switch between the horizontal position and the vertical position as the piston rod of the first cylinder is extended and retracted;

The loading push rod is connected to the other end of the lever part through the first transmission assembly, so that the loading push rod makes linear reciprocating motion as the piston rod of the first cylinder expands and contracts;

A third cylinder located on the flip frame;

The second cylinder bracket is connected to the piston rod of the third cylinder to perform linear reciprocating motion as the piston rod of the third cylinder expands and contracts. The second cylinder bracket is fixedly provided with a piston rod for accommodating the workpiece to be positioned. support block;

A second cylinder is provided on the second cylinder bracket. The piston rod of the second cylinder is connected to the positioning assembly through the second transmission assembly. The positioning assembly expands and contracts during the closing process as the piston rod of the second cylinder expands and contracts. Switch between the position and the open position, wherein in the closed position the positioning assembly cooperates with the support block to clamp the workpiece to be positioned.

Further, the automatic positioning device of the present invention also includes a loading assembly, which includes:

A magnetic conveyor bracket is provided with a conveyor belt and several magnetic adsorption pieces arranged along the conveyor belt;

A magnetic conveying rod extends from the magnetic conveying bracket and points to the second cylinder bracket.

Furthermore, in the automatic positioning device of the present invention, the first cylinder is rotatably provided on the base.

Further, in the automatic positioning device of the present invention, the other end of the lever part is provided with a lever part groove; the first transmission component includes:

A fixed guide rail base with guide rails on it;

A slider, which can be slidably installed on the guide rail seat along the guide rail, the loading push rod is connected to the slider, and a slider pin is provided on the slider;

A connecting rod, the first end of which is adaptively connected to the lever portion groove through a first connecting rod pin;

A lever, the middle part of which is rotatably mounted on the guide rail seat through a lever rotating shaft. The head end of the lever is provided with a first chute, and the tail end of the lever is provided with a second chute. The head end of the lever is The first slide groove is adaptively connected to the second connecting rod pin at the tail end of the connecting rod, and the tail end of the lever is adaptively connected to the slider pin through the second slide groove.

Further, in the automatic positioning device of the present invention, the first transmission component further includes a fixed connecting rod seat with a connecting rod hole provided on it, and the connecting rod passes through the connecting rod hole and is arranged on the connecting rod seat. On the pole base.

Further, in the automatic positioning device of the present invention, the second transmission component includes:

a first rack connected to the piston rod of the second cylinder;

A gear, which is rotatably provided on the second cylinder bracket and is meshed and connected with the first rack;

The second rack is located on the other side of the gear relative to the first rack and is meshed with the gear. The second rack is connected with the positioning component.

Further, in the automated positioning device of the present invention, the positioning component includes:

A cam plate with a camshaft, which is arranged relative to the support block. The camshaft is connected to the second rack. A spiral groove is provided on the circumferential surface of the camshaft. The spiral groove is connected to the second rack. The pins on the two-cylinder bracket are adapted so that: the cam plate, driven by the linear reciprocating motion of the second rack, moves linearly in the same direction as the linear motion of the second rack, while also moving around the camshaft The axis rotates to switch between the closed position and the open position;

A positioning rod is provided through the cam plate, and the first end of the positioning rod is inserted into the positioning hole of the workpiece to be positioned.

Further, in the automated positioning device of the present invention, the positioning component further includes:

A movable plate whose shape matches the cam plate, which is concentrically arranged and connected with the cam plate through a connecting pin. The movable plate is arranged between the support block and the cam plate, and the positioning rod also passes through the movable plate. And setting.

Further, in the automatic positioning device of the present invention, a spring that exerts elastic force in the axial direction of the cam plate is provided between the cam plate and the movable plate.

Further, in the automatic positioning device of the present invention, the positioning rod includes:

A plurality of first positioning rods, which are arranged at the head of the workpiece to be positioned;

The second positioning rod is arranged at the tail of the workpiece to be positioned.

The automatic positioning device of the present invention has the following advantages and beneficial effects:

The automatic positioning device of the present invention can be used in conjunction with the automatic measuring machine of connecting rod products to solve the problems of low efficiency or high cost of existing solutions.

The automatic positioning device of the present invention occupies a small space, has a simple structure, is simple to manufacture and maintain, has good reliability, is easy to use and operate, and can greatly improve the operational stability and reliability of the automatic measuring machine.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 shows a schematic three-dimensional structural diagram of the automatic positioning device according to the present invention from one perspective in one embodiment.

FIG. 2 shows a schematic diagram of the three-dimensional structure of the automatic positioning device according to an embodiment of the present invention from another perspective.

Figure 3 shows a schematic three-dimensional structural diagram of the flip bracket from one perspective in one embodiment of the automated positioning device according to the present invention.

FIG. 4 shows a schematic three-dimensional structural view of the flip bracket in one embodiment of the automated positioning device of the present invention from another perspective.

Figure 5 shows a partial enlarged view of position I in Figure 2.

Figure 6 shows a schematic three-dimensional structural diagram of the support block of the automatic positioning device according to the present invention in one embodiment.

FIG. 7 shows a schematic three-dimensional structural diagram of a loading assembly of the automated positioning device according to an embodiment of the present invention.

Figure 8 shows a schematic diagram of the internal structure of the magnetic transport bracket in one embodiment of the automated positioning device of the present invention.

Figure 9 shows a schematic structural diagram of the guide rail base of the automatic positioning device according to the present invention in one embodiment.

Figure 10 shows a schematic structural diagram of the connecting rod of the automatic positioning device according to the present invention in one embodiment.

Figure 11 shows a schematic three-dimensional structural view of the second cylinder bracket in one embodiment of the automated positioning device according to the present invention.

Figure 12 shows a schematic structural diagram of the cam plate in one embodiment of the automatic positioning device according to the present invention.

Figure 13 shows a partial enlarged view of III in Figure 1.

Figure 14 shows a schematic structural diagram of the movable plate of the automatic positioning device according to the present invention in one embodiment.

Figure 15 shows a cross-sectional view of the automated positioning device according to the present invention in one embodiment.

Figure 16 shows a partial enlarged view of IV in Figure 15.

FIG. 17 shows a schematic structural diagram of a first positioning rod of the automated positioning device according to one embodiment of the present invention.

Detailed ways

The automatic positioning device of the present invention will be further explained and described below with reference to the accompanying drawings and specific embodiments of the description. However, this explanation and description do not unduly limit the technical solution of the present invention.

FIG1 shows a schematic diagram of the three-dimensional structure of the automatic positioning device of the present invention at one viewing angle in one embodiment.

Figure 2 shows a schematic three-dimensional structural diagram of the automatic positioning device according to the present invention from another perspective in an embodiment.

As shown in Figures 1 and 2, in some embodiments, the automated positioning device of the present invention includes: a fixed base 1; the first cylinder bracket 21 is rotatably provided on the base 1 through the base rotating shaft 22; The first cylinder 23 is disposed on the base 1 by being disposed on the first cylinder bracket 21, and its tail is fixedly connected to the first cylinder bracket 21 through an angle iron 24.

In addition, the automated positioning device further comprises a flip bracket 3. Fig. 3 shows a schematic diagram of the three-dimensional structure of the flip bracket of the automated positioning device according to the present invention in one embodiment at one viewing angle. Fig. 4 shows a schematic diagram of the three-dimensional structure of the flip bracket of the automated positioning device according to the present invention in one embodiment at another viewing angle.

As shown in Figures 3 and 4, the flip bracket 3 includes a lever part 31 and a flip frame 32 connected to the lever part 31; the middle part of the lever part 31 is rotatably connected to the base 1 through the lever part rotating shaft 33, as shown in Figure 5 As shown, one end of the lever shaft 33 is axially limited by a retaining spring 331 , so that the flip bracket 3 can rotate around the lever shaft 33 . The upper end of the lever part 31 and the head of the piston rod 231 of the first cylinder 23 are hingedly connected through a shaft and a hole with clearance fit. The third cylinder 4 is provided on the flip frame 32 . As the piston rod of the first cylinder 23 expands and contracts, the flip frame switches between a horizontal position (the position shown in Figures 1 and 2) and a vertical position (not shown in the figures).

Continuing to refer to Figures 1 and 2, the loading push rod 5 is connected to the other end of the lever portion 31 through the first transmission assembly, so that the loading push rod 5 can reciprocate linearly with the expansion and contraction of the piston rod 231 of the first cylinder 23. sports. The second cylinder bracket 61 is connected to the piston rod of the third cylinder 4 and performs linear reciprocating motion as the piston rod of the third cylinder 4 expands and contracts. The second cylinder bracket 61 is fixed with a piston rod for accommodating the workpiece to be positioned. As shown in the support block 7 in Figure 6; the second cylinder 62 is arranged on the second cylinder bracket 61. The piston rod of the second cylinder 62 is connected to the positioning component through the second transmission component. The positioning component follows the piston of the second cylinder 62. The extension and contraction of the rod switches between the closing position and the opening position, in which the positioning assembly cooperates with the support block 7 to clamp the workpiece P to be positioned in the closing position.

In addition, in order to achieve preliminary loading of workpieces to be positioned (such as connecting rod products) to the above-mentioned automated positioning device, as shown in Figures 1, 2 and 7, the automated positioning device of the present invention may preferably also include the above-mentioned automatic positioning device. The material assembly includes: a magnetic conveying bracket 81 and a magnetic conveying rod 82. The magnetic conveying rod 82 extends from the magnetic conveying bracket 81 and points to the second cylinder bracket 61.

Figure 8 shows a schematic diagram of the internal structure of the magnetic transport bracket in one embodiment of the automated positioning device of the present invention.

As shown in Figure 8, in some embodiments, the magnetic conveying bracket 81 is provided with a conveyor belt 811. The conveyor belt 811 is conveyed through the guide wheel 812, and several magnetic adsorption parts 813 arranged along the conveyor belt are provided on the conveyor belt. The magnetic adsorption parts 813 are permanent magnets that can adsorb the workpiece to be positioned. The magnetic adsorption parts 813 are arranged at intervals, so that intermittent feeding can be achieved.

Continuing to refer to Figures 1 and 2, in some embodiments, the first transmission component connected to the loading push rod 5 may include: a fixed guide rail base 91. As shown in Figure 9, the guide rail base 91 is provided with guide rails. 911; The slider 92 is slidably disposed on the guide rail seat 91 along the guide rail. As shown in Figure 7, the loading push rod 5 is connected to the slider 92, and the slider 92 is provided with a slider pin 921. The connecting rod 93 is installed through a fixed connecting rod seat 95. The connecting rod 93 passes through the hole of the connecting rod seat 95. During installation, the connecting rod 93 can be split into two parts and then spliced.

Figure 10 shows a schematic structural diagram of the connecting rod of the automatic positioning device according to the present invention in one embodiment.

As shown in Figure 10, the first end of the connecting rod 93 is adaptively connected to the lever groove of the lever portion 31 of the flip bracket 3 through the first connecting rod pin 931; the tail end of the connecting rod 93 passes through the second connecting rod pin 932 The head end of the lever 94 is connected to the adaptive ground through the first chute. The middle part of the lever 94 is rotatably mounted on the guide rail seat 91 through the lever shaft 912. The tail end of the lever 94 is adapted to the slider pin 921 through the second chute. Ground connection.

Continuing to refer to Figures 1 and 2, in some embodiments, the second transmission component connected to the piston rod of the second cylinder includes:

The first rack 101 is connected to the piston rod of the second cylinder 62; the gear 102 is rotatably provided on the second cylinder bracket 61 through the gear shaft 104 and is meshed with the first rack 101; the second rack 103, which is located on the other side of the gear 102 relative to the first rack 101 and is meshed with the gear 102. The second rack 103 is connected with the positioning component.

Figure 11 shows a schematic three-dimensional structural view of the second cylinder bracket in one embodiment of the automated positioning device according to the present invention.

In some embodiments, the second cylinder 62 may be fixed on the second cylinder bracket 61 through angle iron. There is a dovetail slide block on the first rack 101, which can be in sliding contact with the dovetail groove 611 on the second cylinder bracket 61. In addition, the second rack 103 can also engage with the dovetail groove on the second cylinder bracket 61 through the dovetail slide block on one side of the second rack 103 . The guide rod 612 on the second cylinder bracket 61 is used to guide and support when the second cylinder bracket moves linearly driven by the third cylinder.

Continuing to refer to FIGS. 1 and 2 , in some embodiments, the positioning assembly for positioning the workpiece to be positioned includes: a cam plate 111 having a cam shaft 112 , which is disposed relative to the support block 7 .

As shown in Figures 12 and 13, the camshaft 112 is connected to the second rack 103. A spiral groove 1121 is provided on the circumferential surface of the camshaft 112. The spiral groove 1121 is connected with the pin provided on the second cylinder bracket 61. 113 is adapted so that: driven by the linear reciprocating motion of the second rack 103, the cam plate 111 also moves linearly in the same direction as the linear motion of the second rack 103, while also moving around the axis of the camshaft 112 Turn to switch between closed and open positions.

As shown in FIGS. 13, 14, 15 and 16, the movable plate 114, which is shaped to match the cam plate 111, is concentrically arranged and connected to the cam plate 111 through a connecting pin 1141. A nut 118 is provided at the tail of the connecting pin 1141. A spring 117 is sleeved on the connecting pin 1141. The spring 117 is arranged between the cam plate 111 and the movable plate 114. The movable plate 114 is arranged between the support block 7 and the cam plate 111. The first positioning rod 115 shown in FIG. 17 passes through the square holes on the movable plate and the cam plate and is in a clearance fit with the square hole. The nut is screwed on the thread at the tail of the first positioning rod, and the end face of the thread contacts the end face of the first positioning rod. In some embodiments, the first positioning rod may also be sleeved with a first positioning rod spring 1151, which is supported between the step surface of the head of the first positioning rod and the movable plate 114. As shown in FIG. 17, the head of the first positioning rod 115 is conical and oriented outward, and the three points form a circle. The first positioning rod 115 is disposed on the head of the workpiece to be positioned, the movable plate and the cam plate.

In addition, there is a second positioning rod 116 at the tail of the workpiece to be positioned, the movable plate and the cam plate. The second positioning rod passes through the large square hole at the tail of the movable plate and the cam plate and fits with the two square holes with clearance. Similarly, the nut is screwed on the thread at the tail of the second positioning rod, and the end surface of the thread contacts the end surface of the tail of the second positioning rod. In some embodiments, a second positioning rod spring 1161 may be placed outside the second positioning rod 116 , and the second positioning rod spring 1161 is supported between the step surface of the second positioning rod head and the movable plate 114 .

The automatic positioning device is designed to flip the workpieces to be positioned (such as connecting rod products) arranged on the loading assembly from the position where the center line of the large hole is in the horizontal direction to the position where the center line of the large hole is in the vertical direction, and In this state, it is measured by an automatic measuring machine (not involved in the present invention), and after the measurement is completed, it is measured by a mechanical arm or robot that does not fall within the scope of the present invention.

For this purpose, when the automatic positioning device is working:

(1) The piston rod of the first cylinder 23 contracts, causing the flip bracket 3 to flip 90 degrees from the horizontal position shown in Figures 1 and 2 to the vertical position. At this time, the workpiece (such as a connecting rod product) arranged on the second cylinder bracket is flipped to the measuring position (i.e., the vertical position) together with the second cylinder bracket. At the same time, the third cylinder extends to drive the second cylinder bracket and the components arranged thereon to all extend upward. At the same time, the piston rod of the second cylinder contracts to switch the cam plate to the closed position. In this state, the automatic measuring device can measure the workpiece; at the same time, the loading push rod 5 is extended toward the second cylinder bracket driven by the contraction of the first cylinder, thereby pushing the next connecting rod product waiting on the magnetic conveying rod 82 toward the second cylinder bracket;

(2) Then the piston rod of the second cylinder 62 extends, causing the cam plate to switch to the open position, and then the connecting rod product that has been measured can be taken away by a manipulator;

(3) Then the piston rod of the third cylinder 4 contracts, driving the second cylinder bracket to move downward as a whole;

(4) Then the piston rod of the first cylinder 23 extends, driving the flip bracket 3 to return from the vertical position to the horizontal position, and the center line of the second cylinder is horizontal, while driving the loading push rod 5 to retract (i.e., move away from the first cylinder);

(5) Then the piston rod of the third cylinder 4 extends, driving the entire second cylinder bracket to extend in the horizontal direction;

(6) Then the piston rod of the second cylinder 62 contracts, driving the cam plate to switch to the closed position;

(7) Then the piston rod of the third cylinder 4 contracts;

(8) The loading assembly is started intermittently, and then the next connecting rod product is transported to the position where the magnetic conveying bracket and the magnetic conveying rod are connected;

(9) Return to step (1).

It should be noted that in this embodiment, the opening of the cam plate means that the second cylinder extends and drives the cam plate in a direction close to the guide rail seat through gear transmission, and at the same time drives the cam plate counterclockwise around the axis of the camshaft. Rotate (looking from the guide rail seat to the direction of the first cylinder); thus, the first positioning rod and the second positioning rod can be inserted into the product connecting rod for positioning, and then the movable plate presses the end face of the product connecting rod to make the product connecting rod tight Attach the support block 7, and the arc boss on the support block 7 can play a pre-positioning role.

The cam plate is closed when the second cylinder contracts and moves the cam plate away from the guide rail seat through gear transmission, while driving the cam plate to rotate clockwise around the axis of the camshaft (viewed from the guide rail seat toward the first cylinder).

It should be noted that the prior art in the protection scope of the present invention is not limited to the embodiments given in the present application documents. All prior art that does not contradict the solutions of the present invention, including but not limited to prior patent documents, prior public publications, prior public uses, etc., can be included in the protection scope of the present invention.

In addition, the combination of the technical features in this case is not limited to the combinations recorded in the claims of this case or the combinations recorded in the specific embodiments. All the technical features recorded in this case can be freely combined or combined in any way, unless conflict with each other.

It should also be noted that the embodiments listed above are only specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and subsequent similar changes or deformations that those skilled in the art can directly derive from the disclosed content of the present invention or can easily associate them should all fall within the protection scope of the present invention. .

Claims (10)

1. An automated positioning apparatus, comprising:

a base fixedly arranged;

the first cylinder is arranged on the base;

the overturning bracket comprises a lever part and an overturning frame connected with the lever part; the middle part of the lever part is rotatably connected with the base through a lever part rotating shaft, and one end of the lever part is hinged with a piston rod of the first cylinder, so that the turnover frame is switched between a horizontal station and a vertical station along with the expansion and contraction of the piston rod of the first cylinder;

the feeding push rod is connected with the other end of the lever part through the first transmission component so as to make the feeding push rod do linear reciprocating motion along with the expansion and contraction of a piston rod of the first cylinder;

the third cylinder is arranged on the roll-over stand;

the second cylinder bracket is connected with a piston rod of the third cylinder so as to linearly reciprocate along with the expansion and contraction of the piston rod of the third cylinder, and a supporting block for accommodating a workpiece to be positioned is fixedly arranged on the second cylinder bracket;

the second cylinder is arranged on the second cylinder bracket, a piston rod of the second cylinder is connected with the positioning assembly through the second transmission assembly, and the positioning assembly is switched between a closing station and an opening station along with the expansion and contraction of the piston rod of the second cylinder, wherein the positioning assembly and the supporting block work together to clamp a workpiece to be positioned at the closing station.

2. The automated positioning apparatus of claim 1, further comprising a loading assembly comprising:

the magnetic conveying support is provided with a conveying belt and a plurality of magnetic absorbing parts distributed along the conveying belt;

and the magnetic conveying rod extends out of the magnetic conveying bracket and points to the second cylinder bracket.

3. The automated positioning apparatus of claim 1, wherein the first cylinder is rotatably disposed on the base.

4. The automated positioning apparatus of claim 1, wherein the other end of the lever portion is provided with a lever portion groove; the first transmission assembly includes:

the guide rail seat is fixedly arranged and is provided with a guide rail;

the sliding block can be arranged on the guide rail seat in a sliding manner along the guide rail, the feeding push rod is connected with the sliding block, and a sliding block pin is arranged on the sliding block;

the head end of the connecting rod is connected with the lever part groove in an adaptive manner through a first connecting rod pin;

the middle part of the lever is rotatably arranged on the guide rail seat through a lever rotating shaft, a first chute is arranged at the head end of the lever, a second chute is arranged at the tail end of the lever, the head end of the lever is connected with a second connecting rod pin at the tail end of the connecting rod in an adaptive manner through the first chute, and the tail end of the lever is connected with a sliding block pin in an adaptive manner through the second chute.

5. The automated positioning apparatus of claim 4, wherein the first transmission assembly further comprises a fixedly disposed linkage mount having a linkage aperture disposed therein, the linkage disposed on the linkage mount through the linkage aperture.

6. The automated positioning apparatus of claim 1, wherein the second transmission assembly comprises:

the first rack is connected with a piston rod of the second cylinder;

the gear is rotatably arranged on the second cylinder bracket and is meshed with the first rack;

the second rack is arranged on the other side of the gear relative to the first rack, is meshed with the gear and is connected with the positioning assembly.

7. The automated positioning apparatus of claim 6, wherein the positioning assembly comprises:

the cam plate with the camshaft, it for the supporting shoe sets up, the camshaft with the second rack is connected, be equipped with the helicla flute on the periphery of camshaft, the helicla flute is with locate the pin adaptation on the second cylinder support to make: the cam plate is driven by the linear reciprocating motion of the second rack to linearly move in the same direction as the linear motion of the second rack, and simultaneously rotates around the axle center of the cam shaft so as to switch between a closing station and an opening station;

the positioning rod penetrates through the cam plate and is arranged in the positioning hole of the workpiece to be positioned.

8. The automated positioning apparatus of claim 7, wherein the positioning assembly further comprises:

and a movable plate with a shape matched with the cam plate, which is concentrically arranged and connected with the cam plate through a connecting pin, wherein the movable plate is arranged between the supporting block and the cam plate, and the positioning rod also passes through the movable plate to be arranged.

9. The automated positioning apparatus of claim 8, wherein a spring that applies an elastic force in an axial direction of the cam plate is provided between the cam plate and the movable plate.

10. The automated positioning apparatus of claim 7, wherein the positioning rod comprises:

the first positioning rods are arranged at the head part of the workpiece to be positioned;

and the second positioning rod is arranged at the tail part of the workpiece to be positioned.