CN119036814A

CN119036814A - Blow molding machine

Info

Publication number: CN119036814A
Application number: CN202411343292.9A
Authority: CN
Inventors: 李元源; 王影星; 尤国祥; 尤明亮
Original assignee: Yancheng Vocational Institute of Industry Technology
Current assignee: Yancheng Vocational Institute of Industry Technology
Priority date: 2024-09-25
Filing date: 2024-09-25
Publication date: 2024-11-29

Abstract

The invention relates to the technical field of plastic product processing equipment, and proposes a blow molding machine, comprising: a blow-out mechanism and a feeding mechanism arranged on a device frame, and also comprising: a cam mechanism, a plurality of molds and a plurality of clamping mechanisms, wherein the cam is rotatably connected to the bottom of the device frame through a rotating shaft, the first ends of a plurality of connecting rods are rotatably connected to the cam wheel groove at equal intervals, the second ends of the connecting rods are rotatably connected to a sliding block, a plurality of sliding frames are connected to the bottom of the device frame, the sliding blocks are slidably matched with the sliding frames in a one-to-one correspondence, the plurality of molds each include two half-molds that are interlocked with each other, the paired half-molds are correspondingly connected to a sliding block, the feeding mechanism is fixed to the rotating shaft, the plurality of clamping mechanisms each include two clamping frames and a control mechanism connected to the clamping frames to drive the two clamping frames to move toward or away from each other, the clamping frames are fixed to the half-molds in a one-to-one correspondence, the injection molding and blow molding process can be completed uninterruptedly, and the blow molding efficiency is improved.

Description

Blow molding machine

Technical Field

The invention relates to the technical field of plastic product processing equipment, in particular to a blow molding machine.

Background

Blow molding machines are widely used in packaging, medical, toys, and other fields. In the packaging industry, the blow molding machine is mainly used for manufacturing various plastic packaging films, plastic bottles and the like, and has the advantages of freshness preservation, moisture resistance, corrosion resistance, difficult breakage and the like. In the medical appliance industry, plastic products produced by a blow molding machine, such as medical appliances, such as infusion bags, infusion bottles and the like, have the characteristics of easy disinfection and sterilization, and can ensure the sanitation and safety of the medical appliances. In the toy industry, various plastic toys produced by blow molding machines are popular with children, and have high safety, economy and various shapes. In addition, many components in automobile parts, such as porous pipes, separators, fuel tanks, etc., also need to be manufactured by blow molding machines.

The blowing machine main module that uses at present has feed mechanism, blow out mechanism, mould, cooling device and control system, feed mechanism is arranged in extruding the material to the mould, blow out mechanism main function is in the cooling process of mould, push into the mould inside with highly-compressed air for the material also can form smooth appearance and good transparency when the inflation, but at present this kind of blowing machine is after moulding plastics, need wait for the cooling to finish, take out the product and just can carry out injection molding of next batch after the completion, this makes blowing inefficiency, be unfavorable for the production of assembly line.

Disclosure of Invention

In order to solve the technical problems, the invention provides a blow molding machine which can complete blow molding processing without intermittent injection molding and improve blow molding efficiency.

The invention provides a blow-out mechanism and a feeding mechanism which are arranged on a device frame, and further comprises a cam mechanism, a plurality of dies and a plurality of clamping mechanisms, wherein the cam mechanism comprises a cam, a plurality of connecting rods and a sliding block, the cam is rotationally connected with the bottom of the device frame through a rotating shaft, first ends of the connecting rods are rotationally connected in cam grooves at equal intervals, second ends of the connecting rods are rotationally connected with the sliding block, the bottom of the device frame is connected with a plurality of sliding frames, the sliding frames are radially arranged around the rotating shaft, the sliding blocks are in one-to-one sliding fit with the sliding frames, the dies comprise two half dies which are buckled with each other, the pair of half dies are correspondingly connected to one sliding block, the feeding mechanism is fixedly connected with the rotating shaft, the feeding mechanism is positioned right above the nearest position of the dies to the rotating shaft, the blow-out mechanism is positioned right above the farthest position of the dies, and the clamping frames are driven to move in opposite directions or opposite directions by the two clamping frames, and the clamping frames are correspondingly fixed with the half dies.

Optionally, each group of control mechanism comprises a control frame, two connecting frames and a transmission assembly, wherein the control frame is fixed with the sliding block, the two connecting frames are connected with the two clamping frames in one-to-one correspondence, the connecting frames are in sliding fit with the control frame, and the transmission assembly is connected between the control frame and the connecting frames so as to drive the two connecting frames to move in opposite directions or in opposite directions.

Optionally, the transmission assembly comprises a motor and a plurality of transmission shafts, wherein the motor is fixed on the control frame, the output shaft of the motor is horizontally arranged, the transmission rods are fixed on the output shaft of the motor, the transmission shafts are perpendicular to the transmission rods, the transmission shafts are divided into two groups, the two groups of transmission shafts are symmetrically distributed on two sides of the transmission rods, the transmission shafts are rotationally connected to the control frame, the transmission rods and the transmission shafts are in meshed transmission through bevel gears, a first gear is fixed on each transmission shaft, a first rack is fixedly connected on the connecting frame, and the first racks are in one-to-one correspondence with the first gears in a meshed mode.

Optionally, a connecting groove is formed in the control frame, and the connecting frame is slidably connected to the connecting groove.

Optionally, the device further comprises a cutter connected to the device frame, and the cutter is located between a group of corresponding dies and the clamping mechanism.

Optionally, a support is fixed on the sliding frame, the support is in sliding fit with the control frame, the support is fixedly connected with a supporting rod, the supporting rod is located above the die and the clamping mechanism, a second gear is rotationally connected to the bottom of the supporting rod, and the second gear is in transmission connection with the cutter to drive the cutter to rotate.

Optionally, a second rack is fixed on the clamping frame, the second rack is meshed with the second gear, and the clamping frame is fixedly connected with the die.

Compared with the prior art, the technical scheme provided by the embodiment of the invention has the following advantages:

When the device is used, plasticized plastic melt is extruded by the feeding mechanism, when the plastic melt is extruded to the required volume length, the two half mold closing mechanisms are controlled to clamp the plastic melt, at the moment, the sliding blocks corresponding to the feeding mechanism are located at the position closest to the rotating shaft, the rotating shaft is controlled to rotate, the rotating shaft rotates to drive the feeding mechanism to rotate, the cam is driven to rotate simultaneously, the cam rotates to drive the sliding blocks to move through the connecting rod, namely, the sliding blocks move towards the direction far away from the rotating shaft, when the sliding blocks with materials on the sliding blocks move to the farthest position far away from the rotating shaft, the blowing mechanism is controlled to blow plastic inside the mold, when the blowing mechanism is controlled to blow the plastic inside the mold, the rotating shaft is motionless, at the moment, the feeding mechanism is correspondingly positioned to extrude the plastic melt, the two half mold closing mechanisms are clamped, and correspondingly move, after the blowing is completed, the two half mold closing mechanisms are mutually far away from each other through the control mechanism, the rotating shaft is controlled to move towards the position direction close to the rotating shaft, the product which is already completed in the moving process is cooled, when the blowing is moved to the position closest to the position, the blowing mechanism is controlled to extrude the plastic melt, the plastic melt is blown plastic melt, and the plastic melt is blown and the plastic melt is molded.

Drawings

FIG. 1 is a schematic view of the overall structure of a blow molding machine according to an embodiment of the present invention;

FIG. 2 is a front view of a blow molding machine according to an embodiment of the present invention;

FIG. 3 is a schematic view of a lower structure of a blow molding machine according to an embodiment of the present invention;

FIG. 4 is an enlarged schematic view of a partial structure at A in FIG. 3;

FIG. 5 is a schematic structural diagram of a control mechanism according to an embodiment of the present invention;

FIG. 6 is a front view of a control mechanism provided by an embodiment of the present invention;

FIG. 7 is an assembly view of a mold and a clamping mechanism according to an embodiment of the present invention;

FIG. 8 is an enlarged schematic view of a partial structure at B in FIG. 5;

Fig. 9 is an enlarged schematic view of a partial structure at C in fig. 7.

Reference numerals illustrate:

1. Device rack 11, base 12, sliding rack 13, cam 14, rotating shaft 15, connecting rod 16, sliding block 17, bracket 18, strut 19, second gear 110, cutter 2, top cover 3, cylinder 4, blow-out mechanism 41, supporting frame 42, blow-out head 43, sliding shaft 5, feeding mechanism 51, feeding seat 52, feeding head 6, mould 7, clamping mechanism 71, clamping rack 72, second rack 8, control mechanism 81, control rack 82, motor 83, transmission rod 84, transmission shaft 85, first gear 86, first rack 87, connecting rack 88, connecting groove.

Detailed Description

One embodiment of the present invention will be described in detail below with reference to the attached drawings, but it should be understood that the scope of the present invention is not limited by the embodiment.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the technical solutions of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

At present, after the injection molding is finished, the blowing machine needs to wait for cooling to finish, and the injection molding of the next batch can be carried out after the product is taken out, so that the blowing efficiency is low, and the production of a production line is not facilitated.

Therefore, the embodiment of the invention provides a blow molding machine which can complete blow molding without interruption and improve blow molding efficiency.

The invention provides a blow-out mechanism and a feeding mechanism which are arranged on a device frame, and further comprises a cam mechanism, a plurality of dies and a plurality of clamping mechanisms, wherein the cam mechanism comprises a cam, a plurality of connecting rods and a sliding block, the cam is rotationally connected with the bottom of the device frame through a rotating shaft, first ends of the connecting rods are rotationally connected in cam grooves at equal intervals, second ends of the connecting rods are rotationally connected with the sliding block, the bottom of the device frame is connected with a plurality of sliding frames, the sliding frames are radially arranged around the rotating shaft, the sliding blocks are in sliding fit with the sliding frames in a one-to-one correspondence manner, the dies comprise half dies which are buckled with each other, the pair of half dies are correspondingly connected to one sliding block, the feeding mechanism is fixedly connected with the rotating shaft, the feeding mechanism is positioned right above the nearest position of the dies to the rotating shaft, the blow-out mechanism is positioned right above the farthest position of the dies from the rotating shaft, and the clamping frames are respectively provided with two clamping frames and a control mechanism connected with the clamping frames so as to drive the two clamping frames to move oppositely or reversely, and the clamping frames are correspondingly fixed to the half dies.

In the blow molding machine provided by the embodiment of the invention, the cam mechanism is used for controlling the blowing mechanism to blow molding plastic in the mold when the sliding block moves to the farthest position away from the rotating shaft, the feeding mechanism is correspondingly positioned to extrude the plastic in the mold when the blowing mechanism is controlled to blow molding plastic in the mold, the mold in the corresponding position clamps the plastic and performs corresponding actions, after the blowing is finished, the mold is opened through the control mechanism, the sliding block is controlled to move towards the position close to the rotating shaft, the product which is already blown in the moving process is cooled, when the sliding block moves to the nearest position away from the rotating shaft, the feeding mechanism is controlled to extrude the plastic, the clamping mechanism clamps the product which is already blown in the moving process, the clamping mechanism drives the product which is already blown in the blowing process to move outwards when the sliding block moves away from the rotating shaft, and the clamping mechanism pushes away the product which is already blown in the upper group, and the like, so on, and the blow molding machine is molded without interruption.

The invention is illustrated by the following examples. Detailed descriptions of known functions and known components may be omitted as so as to not obscure the description of the embodiments of the present invention. When any element of an embodiment of the present invention appears in more than one drawing, the element may be referred to by the same reference numeral in each drawing.

Referring to fig. 1, 2, 3 and 4, fig. 1 is a schematic overall structure of a blow molding machine according to an embodiment of the present invention, fig. 2 is a front view of a blow molding machine according to an embodiment of the present invention, fig. 3 is a schematic lower structure of a blow molding machine according to an embodiment of the present invention, and fig. 4 is an enlarged schematic partial structure at a in fig. 3, as shown in fig. 1, 2, 3 and 4, the embodiment of the present invention provides a blow molding machine including: the blowing mechanism 4 and the feeding mechanism 5 arranged on the device frame 1 further comprise a cam mechanism, a plurality of dies 6 and a plurality of clamping mechanisms 7, wherein the cam mechanism comprises a cam 13, a plurality of connecting rods 15 and sliding blocks 16, the cam 13 is rotationally connected with the bottom of the device frame 1 through rotating shafts 14, first ends of the plurality of connecting rods 15 are rotationally connected in wheel grooves of the cam 13 at equal intervals, second ends of the connecting rods 15 are rotationally connected with the sliding blocks 16, the bottom of the device frame 1 is connected with a plurality of sliding frames 12, the sliding frames 12 are radially arranged with the rotating shafts 14 as the center, the sliding blocks 16 are in one-to-one sliding fit with the sliding frames 12, the dies 6 comprise two half dies which are buckled with each other, the pair of half dies are correspondingly connected to one sliding block 16, the feeding mechanism 5 is fixedly connected to the rotating shafts 14, the feeding mechanism 5 is positioned right above the nearest position of the dies 6 to the rotating shafts 14, the blowing mechanism 4 is positioned right above the farthest position of the rotating shafts 14, the clamping mechanisms 7 comprise two clamping frames 71 and control mechanisms 8 connected with the clamping frames 71 so as to drive the two clamping frames 71 to move oppositely or to clamp the clamping frames 71 oppositely one by one.

When the device is used, plasticized plastic melt is extruded by the feeding mechanism 5, when the plastic melt is extruded to the required volume length, the mould 6 is controlled to clamp the plastic melt, at the moment, the position of the feeding mechanism 5 corresponding to the sliding block 16 is closest to the rotating shaft 14, the rotating shaft 14 is controlled to rotate, the rotating shaft 14 rotates to drive the feeding mechanism 5 to rotate, meanwhile, the rotating shaft 14 rotates to drive the cam 13 to rotate, the cam 13 rotates to control the sliding block 16 to move through the connecting rod 15, namely, the sliding block 16 is controlled to move away from the rotating shaft 14, the sliding block 16 moves to drive the mould 6 and the clamping mechanism 7 to move outwards through the control mechanism 8, and when the sliding block 16 moves to the farthest position far away from the rotating shaft 14, the blowing mechanism 4 is controlled to blow the plastic inside the mould 6.

When the blowing mechanism 4 is controlled to blow plastic in the mold 6, the rotating shaft 14 is not moved, and at this time, the corresponding position of the feeding mechanism 5 is extruded, and the mold 6 at the corresponding position clamps the plastic and performs corresponding actions.

After the blow molding is completed, the mold 6 is opened by the control mechanism, the rotation shaft 14 is controlled to rotate, the sliding block 16 moves towards the direction close to the rotation shaft 14, the blow molded product is cooled during the movement, the feeding mechanism 5 extrudes when the sliding block moves to the position closest to the rotation shaft 14, the mold 6 is controlled to be closed, and the mold 6 is closed to clamp the blow molded product corresponding to the clamping mechanism 7 when the mold 6 is closed. When the sliding block 16 moves away from the rotating shaft 14, the clamping mechanism 7 drives the blow-molded product to move outwards, and meanwhile, the clamping mechanism 7 pushes away the upper group of blow-molded products, and the like, so that uninterrupted injection molding blow molding processing is performed.

When the sliding block 16 moves away from the rotating shaft 14, the clamping mechanism 7 drives the blow-molded product to move outwards, and meanwhile, the clamping mechanism 7 pushes away the upper group of blow-molded products, and the like, so that uninterrupted injection molding blow molding processing is performed.

Referring to fig. 5 and 6, fig. 5 is a schematic structural diagram of a control mechanism provided in an embodiment of the present invention, and fig. 6 is a front view of the control mechanism provided in an embodiment of the present invention, each set of control mechanisms 8 includes a control frame 81, two connection frames 87, and a transmission assembly, where the control frame 81 is fixed to the sliding block 16, the two connection frames 87 are connected to the two clamping frames 71 in one-to-one correspondence, the connection frames 87 are slidably engaged with the control frame 81, and the transmission assembly is connected between the control frame 81 and the connection frames 87 to drive the two connection frames 87 to move in opposite directions or backward directions. Specifically, the transmission assembly comprises a motor 82 and a plurality of transmission shafts 84, wherein the motor 82 is fixed on a control frame 81, an output shaft of the motor 82 is horizontally arranged, a transmission rod 83 is fixed on an output shaft of the motor 82, the plurality of transmission shafts 84 are perpendicular to the transmission rod 83, the plurality of transmission shafts 84 are divided into two groups, the two groups of transmission shafts 84 are symmetrically distributed on two sides of the transmission rod 83, the transmission shafts 84 are rotationally connected to the control frame 81, the transmission rod 83 and the transmission shafts 84 are in meshed transmission through bevel gears, a first gear 85 is fixed on each transmission shaft 84, a first rack 86 is fixedly connected to the connecting frame 87, and the first racks 86 are in one-to-one corresponding meshing with the first gears 85.

When the control die 6 and the clamping mechanism 7 are closed, the motor 82 is controlled to start the motor 82, the motor 82 controls the transmission rod 83 to rotate, the transmission rod 83 rotates to drive the transmission shaft 84 to rotate, the transmission shaft 84 rotates to drive the first gear 85 to rotate, the first gear 85 is in meshed connection with the first rack 86, the first rack 86 is in sliding connection with the control frame 81, the first gear 85 rotates to control the first rack 86 to approach the first gear 85, the two groups of connecting frames 87 move towards the middle synchronously, and the connecting frames 87 move to drive the die 6 and the clamping mechanism 7 to move so as to realize closing;

when the control die 6 and the clamping mechanism 7 are opened, the control starting motor 82 is controlled, the motor 82 controls the transmission rod 83 to rotate, the transmission rod 83 rotates to drive the transmission shaft 84 to rotate, the transmission shaft 84 rotates to drive the first gear 85 to rotate, the first gear 85 is connected with the first rack 86 in a meshed mode, the first rack 86 is connected with the control frame 81 in a sliding mode, the first gear 85 rotates to control the first rack 86 to be far away from the first gear 85, then the two groups of connecting frames 87 move to two sides, and the connecting frames 87 move to drive the die 6 and the clamping mechanism 7 to move, so that opening is achieved.

Referring to fig. 8, fig. 8 is an enlarged schematic view of a partial structure at B in fig. 5, and as shown in fig. 8, a connection groove 88 is formed on the control frame 81, and the connection frame 87 is slidably connected to the connection groove 88.

For the control mechanism 8, the control mechanism 8 comprises a control frame 81, a motor 82, a transmission rod 83, a transmission shaft 84, a first gear 85, a first rack 86, a connecting frame 87 and a connecting groove 88, wherein the control frame 81 is fixedly connected with the sliding block 16, the motor 82 is fixedly connected with the outside of the control frame 81, the transmission rod 83 is arranged at the output end of the motor 82, the transmission shaft 84 is externally meshed and connected with the transmission shaft 83, the first gear 85 is fixedly connected with the outside of the transmission shaft 84, the first rack 86 is symmetrically meshed and connected with the outside of the first gear 85, the connecting frame 87 is fixedly connected with the outside of the first rack 86, and the connecting groove 88 is formed in the outside of the control frame 81. In one embodiment, for the transmission shaft 84, the transmission shaft 84 is rotatably connected with the control frame 81, the connection frame 87 is slidably connected with the connection groove 88, the mold 6 and the clamping mechanism 7 are fixedly connected with the outside of the connection frame 87, and a plurality of groups of control mechanisms are arranged.

Referring to fig. 7 and 9, fig. 7 is an assembly view of a mold and a clamping mechanism according to an embodiment of the present invention, fig. 9 is an enlarged schematic view of a partial structure at C in fig. 7, and as shown in fig. 7 and 9, at least one embodiment of the present invention provides a blow molding machine further including a cutter 110 connected to the apparatus frame 1, wherein the cutter 110 is located between a corresponding set of the mold 6 and the clamping mechanism 7.

When the closed clamping mechanism 7 clamps the product which is already blown and drives the product to move outwards, the clamping frame 71 is in contact engagement with the second gear 19, the clamping frame 71 moves to drive the second gear 19 to rotate, and the second gear 19 is in transmission connection with the cutters 110, the second gear 19 rotates to drive the cutters 110 to rotate, and the two groups of cutters 110 rotate to repair the product clamped by the clamping mechanism 7, namely, redundant parts are cut off.

In one embodiment of the present invention, a support 17 is fixed on the carriage 12, the support 17 is slidably matched with the control frame 81, the support 17 is fixedly connected with a supporting rod 18, the supporting rod 18 is located above the die 6 and the clamping mechanism 7, a second gear 19 is rotatably connected to the bottom of the supporting rod 18, and the second gear 19 is in transmission connection with the cutter 110 so as to drive the cutter 110 to rotate.

Specifically, the second rack 72 is fixed on the clamping frame 71, the second rack 72 is meshed with the second gear 19, and the clamping frame 71 is fixedly connected with the mold 6, so that when the clamping frame 71 is closed or opened, the second rack 72 is driven to move, and the second gear 19 is driven to drive the cutter 110 to rotate, thereby repairing the product.

Referring again to fig. 1 and 4, the device frame 1 includes a base 11 and a top cover 2 fixed on top of the base 11, the blowing mechanism 4 and the feeding mechanism 5 are both connected to the bottom of the top cover 2, and the carriage 12 is connected to the base 11.

The embodiment of the invention provides a blow molding machine, which comprises a device frame 1, wherein the device frame 1 comprises a base 11, a cam mechanism is arranged outside the base 11, the cam mechanism comprises a rotating shaft 14 arranged outside the base 11, a cam 13 is fixedly connected to the outside of the rotating shaft 14, connecting rods 15 are rotatably connected to the outside of the cam 13, a plurality of groups of connecting rods 15 are arranged, sliding blocks 16 are rotatably connected to the outside of the connecting rods 15, and a feeding mechanism 5 is fixedly connected to the outside of the rotating shaft 14. The device frame 1 is provided with the top cap 2 outside, and the top cap 2 outside is provided with the blowout mechanism 4 that is used for carrying out the blowing, and the outside sliding connection of device frame 1 has the control mechanism 8 that is used for controlling mould 6 and fixture 7 overall movement, and the inside control mechanism 8 is provided with the control mechanism that is used for controlling mould 6 and fixture 7 to close and open. The cutter 110 for trimming the product is arranged outside the base 11, and when the feeding mechanism 5 extrudes the plasticized plastic melt to the die 6, the feeding mechanism 5 is positioned at the position of the sliding block 16 closest to the rotating shaft 14.

In one embodiment of the invention, the blowing mechanism 4 comprises a sliding shaft 43, a supporting frame 41 and a blowing head 42, wherein the upper end of the sliding shaft 43 is fixed with the bottom of the top cover 2, the lower end of the sliding shaft 43 faces the sliding frame 12, the supporting frame 41 is connected with the sliding shaft 43 in a sliding way, the supporting frame 41 is connected with the air cylinder 3 so as to drive the supporting frame 41 to move along the extending direction of the sliding shaft 43, and the blowing head 42 is fixed on one side of the supporting frame 41 facing the sliding frame 12. The blow head 42 is used for blow molding, the air cylinder 3 drives the support frame 41 to move downwards to be right above the die 6 so as to blow molding an internal product, and after blow molding is completed, the air cylinder 3 drives the support frame 41 to move upwards to leave the die.

Specifically, the feeding mechanism 5 comprises a feeding seat 51 and a feeding head 52, wherein the feeding seat 51 is fixed on the rotating shaft 14, a scissor mechanism for shearing off the plasticized plastic melt is arranged outside the feeding seat 51, the feeding head 52 is fixed on the feeding seat 51, and the feeding head 52 is positioned right above the position, closest to the rotating shaft 14, of the die 6.

The foregoing invention is only a few specific embodiments of the invention, but the embodiments of the invention are not limited thereto, and any changes that can be thought by those skilled in the art should fall within the protection scope of the invention.

Claims

1. The blow molding machine comprises a blow-out mechanism (4) and a feeding mechanism (5) which are arranged on a device frame (1), and is characterized by further comprising:

The cam mechanism comprises a cam (13), a plurality of connecting rods (15) and sliding blocks (16), wherein the cam (13) is rotationally connected with the bottom of the device frame (1) through a rotating shaft (14), first ends of the plurality of connecting rods (15) are rotationally connected in wheel grooves of the cam (13) at equal intervals, second ends of the connecting rods (15) are rotationally connected with the sliding blocks (16), a plurality of sliding frames (12) are connected to the bottom of the device frame (1), the sliding frames (12) are radially arranged by taking the rotating shaft (14) as the center, and the sliding blocks (16) are in sliding fit with the sliding frames (12) in a one-to-one correspondence manner;

The multiple moulds (6) comprise two half moulds which are buckled with each other, the paired half moulds are correspondingly connected to one sliding block (16), the feeding mechanism (5) is fixedly connected to the rotating shaft (14), the feeding mechanism (5) is positioned right above the nearest position of the mould (6) to the rotating shaft (14), and the blowing mechanism (4) is positioned right above the farthest position of the mould (6) to the rotating shaft (14);

The clamping mechanisms (7) comprise two clamping frames (71) and a control mechanism (8) connected with the clamping frames (71) so as to drive the two clamping frames (71) to move in opposite directions or in opposite directions, and the clamping frames (71) are fixed with the half molds in a one-to-one correspondence manner.

2. A blowing machine according to claim 1, wherein each set of said control means (8) comprises:

a control frame (81) fixed to the slide block (16);

the two connecting frames (87) are connected with the two clamping frames (71) in one-to-one correspondence, and the connecting frames (87) are in sliding fit with the control frames (81);

The transmission assembly is connected between the control frame (81) and the connecting frames (87) so as to drive the two connecting frames (87) to move oppositely or backwards.

3. The blow molding machine of claim 2, wherein the transmission assembly comprises:

The motor (82) is fixed on the control frame (81), an output shaft of the motor (82) is horizontally arranged, and a transmission rod (83) is fixed on the output shaft of the motor (82);

The transmission shafts (84) are perpendicular to the transmission rods (83), the transmission shafts (84) are divided into two groups, the two groups of transmission shafts (84) are symmetrically distributed on two sides of the transmission rods (83), the transmission shafts (84) are rotationally connected to the control frame (81), the transmission rods (83) and the transmission shafts (84) are in meshing transmission through bevel gears, a first gear (85) is fixed on each transmission shaft (84), a first rack (86) is fixedly connected to the connecting frame (87), and the first racks (86) are meshed with the first gears (85) in one-to-one correspondence.

4. A blowing machine according to claim 3, wherein said control frame (81) is provided with a connecting slot (88), said connecting frame (87) being slidingly connected to said connecting slot (88).

5. A blow moulding machine according to claim 3, further comprising a cutter (110) connected to the device frame (1), the cutter (110) being located between a set of corresponding moulds (6) and the clamping mechanism (7).

6. A blowing machine according to claim 5, characterised in that the carriage (12) is fixed with a support (17), the support (17) is in sliding fit with the control frame (81), the support (17) is fixedly connected with a support rod (18), the support rod (18) is located above the mould (6) and the clamping mechanism (7), the bottom of the support rod (18) is rotatably connected with a second gear (19), and the second gear (19) is in transmission connection with the cutter (110) to drive the cutter (110) to rotate.

7. A blowing machine according to claim 6, wherein a second toothed rack (72) is fixed to said holder (71), said second toothed rack (72) being in mesh with said second gear (19), said holder (71) being fixedly connected to the mould (6).