CN212372685U

CN212372685U - Plastic uptake forming device for PC draw-bar box body

Info

Publication number: CN212372685U
Application number: CN201922406621.0U
Authority: CN
Inventors: 张水华
Original assignee: Jiaxing Hongguan Intelligent Technology Co ltd
Current assignee: Jiaxing Hongguan Intelligent Technology Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2021-01-19
Anticipated expiration: 2029-12-27

Abstract

The utility model discloses a PC draw-bar box plastic uptake forming device belongs to the plastic uptake forming device field, comprising a frame body, support body left side outer wall fixed mounting has control button, support body upside inner wall fixed mounting has the standing groove, support body left and right sides upper end outer wall fixed mounting has cylinder A, cylinder A left side upper end outer wall fixed mounting has motor A, the motor A lower extreme runs through cylinder A and rotates and be connected with screw rod A, screw rod A outer wall rotates and has cup jointed screw rod cover A, the fixed bearing housing A that has cup jointed of screw rod cover A outer wall, the inside fixed mounting in cylinder A right side has slide bar A. Through setting up rotating-structure messenger's device utilizes littleer space to realize multiple functions, is convenient for process different types of product, has improved the practicality of device.

Description

Plastic uptake forming device for PC draw-bar box body

Technical Field

The utility model relates to a plastic uptake forming device technical field especially relates to a PC draw-bar box plastic uptake forming device.

Background

The plastic sucking machine is also called a thermoplastic forming machine, and is a machine for sucking and manufacturing thermoplastic plastic coiled materials such as PVC, PE, PP, PET, HIPS and the like which are plasticized by heating into various high-grade products such as packaging decorative boxes, frames and the like. The thermoplastic plastic sheets such as PVC, PET and the like which are heated and softened are subjected to vacuum forming by a mould into vacuum covers, plastic trays, bubble shells and the like with various shapes by utilizing vacuum suction force generated by a vacuum pump.

Patent CN201721319672.4 discloses a plastic sucking and cutting integrated machine for draw-bar box, which aims at the two production processes of box body plastic sucking and cutting in the production process of draw-bar box, the production process of the two box bodies is separated basically in the current production industry, the main body of the box body is collected after independent plastic sucking and forming, and then the box body after forming the box body is placed in a cutting machine for cutting, the production method has high cost, long production period, low production efficiency and low automation degree, and is not suitable for mass production, by combining the forming, detecting and cutting processes of the traditional draw-bar box, the material is sent and taken by using an integral production line type conveying mechanism, and the product is detected by a detecting device in the conveying process before corresponding processing, the labor cost is effectively reduced, so that the production process reaches the efficient automatic production of each link, the whole production process flow is simplified, the production period is shortened, the production efficiency is effectively improved, the production cost is reduced, the production is convenient, and the practicability is high.

The plastic suction device has the following defects: 1. above-mentioned blister pack occupation space is great, and the cost consumes more, is not convenient for accomplish the heating and the cooling process that the blister process needs in limited space, has reduced the practicality of device. 2. The plastic uptake mould of the plastic uptake device is not convenient to replace, if the plastic uptake draw-bar boxes of different types are required to be absorbed, different devices are required to be used, the processing time is wasted, and the practicability of the device is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a PC draw-bar box body plastic uptake forming device, which aims to adopt a rotating structure, when needing to start processing, a material to be processed is placed in a placing groove, a control button is pressed to control a motor A to operate, a screw rod A is driven to rotate, a screw rod sleeve A is driven to move downwards through an outer wall thread, a bearing sleeve A is driven to move downwards, thereby a fixed block is driven to move downwards in a sliding groove A, a right rotating plate is driven to move downwards, the sliding sleeve A which is fixedly arranged at the right side is driven to move downwards in the sliding rod A, the control button is pressed, a motor B is controlled to operate, a rotating shaft is driven to rotate to enable a heating plate to rotate downwards, the material placed at the lower end is heated, the control button is pressed after heating, a control motor C is controlled to operate, a screw rod B is driven to rotate, a screw rod sleeve B is driven to move upwards through an outer wall thread, a bearing sleeve B is driven to move upwards, thereby a, the sliding sleeve B driving the right side fixed mounting moves upwards and stably on the outer wall of the sliding rod B, the vacuum shrinker driving the upper end fixed mounting moves upwards to press the material of the upper end fixed mounting, vacuum shrinkage is carried out to complete plastic suction, then the motor B is controlled to operate to drive the rotating shaft to rotate, so that the refrigerating plate rotates downwards to cool the material formed by suction molding, and therefore machining is completed, machining efficiency is improved, occupied space is reduced, and practicability of the device is improved.

Through rotating-structure, produce different types of draw-bar box as needs, the manual bolt that rotates, outwards rotate and go out the bolt from screw B and screw A in through the screw thread, then will mould lower extreme fixed mounting's inserted block and upwards extract from the through-hole in will moulding, can take out the mould, mould lower extreme fixed mounting's fixture block inject the through-hole at will changing, the bolt rotates, run through screw A and screw B and can accomplish the change, the efficiency of production is improved, the practicality of device has been increased.

The utility model provides a specific technical scheme as follows:

the utility model provides a PC draw-bar box body plastic uptake forming device, which comprises a frame body, wherein a control button is fixedly arranged on the outer wall of the left side of the frame body, a placing groove is fixedly arranged on the inner wall of the upper side of the frame body, a cylinder A is fixedly arranged on the outer wall of the upper end of the left side of the frame body, a motor A is fixedly arranged on the outer wall of the upper end of the cylinder A of the left side of the frame body, the lower end of the motor A is connected with a screw A by rotating through the cylinder A, a screw sleeve A is sleeved on the outer wall of the screw A by rotating, a bearing sleeve A is fixedly sleeved on the outer wall of the screw sleeve A, a slide bar A is fixedly arranged inside the cylinder A of the right side of the frame body, a sliding sleeve A is movably sleeved on the outer wall of the slide bar A, a sliding groove A is fixedly arranged on, the rotary plate is rotatably arranged on the inner side of the rotary shaft, the refrigerating plate is fixedly arranged on the upper end of the rotary plate, the heating plate is fixedly arranged on the lower end of the rotary plate, the cylinder B is fixedly arranged on the outer wall of the lower end of the left side and the right side of the frame body, the motor C is fixedly arranged on the lower end of the cylinder B on the left side of the frame body, the screw B is rotatably connected with the screw B, the screw sleeve B is rotatably sleeved on the outer wall of the screw B, the bearing sleeve B is fixedly sleeved on the outer wall of the screw sleeve B, the slide bar B is fixedly arranged in the cylinder B on the right side of the frame body, the slide sleeve B is movably sleeved on the outer wall of the slide bar B, the slide groove B is fixedly arranged on the inner side of the cylinder B, the bearing sleeve B and the slide sleeve B penetrate through the slide groove B and, the vacuum shrinker is characterized in that a plastic mold is fixedly mounted at the upper end of the inserting block, a screw B is fixedly mounted inside the inserting block, a screw A is fixedly mounted inside two sides of the vacuum shrinker, and bolts are rotatably mounted inside the screw A and the screw B.

Optionally, the outer wall of the screw rod a is fixedly provided with threads, and the inner wall of the screw rod sleeve a is fixedly provided with threads matched with the threads on the outer wall of the screw rod a, so as to form a rotating structure.

Optionally, the outer wall of the screw B is fixedly provided with threads, and the inner wall of the screw sleeve B is fixedly provided with threads matched with the threads on the outer wall of the screw B to form a rotating structure.

Optionally, the inner walls of the screw A and the screw B are fixedly provided with threads, and the outer wall of the bolt is fixedly provided with threads matched with the threads of the outer walls of the screw A and the screw B to form a rotating structure.

Optionally, the input end of the control button is electrically connected with an external power supply through a wire, the output end of the control button is electrically connected with the input ends of the motor a, the motor B, the motor C, the heating plate, the refrigerating plate and the vacuum shrinking machine through wires, and the output end of the motor a is connected with the rotation input end of the screw rod a.

The utility model has the advantages as follows:

1. the embodiment of the utility model provides a PC draw-bar box body plastic uptake forming device, through rotating the structure, when needing to begin to add man-hour, will wait to process the material and place in the standing groove, press control button, control motor A operation, drive screw rod A rotation, drive screw rod cover A through the outer wall screw thread and move down, drive bearing sleeve A and move down, thereby drive the fixed block and move down in sliding tray A, thereby drive the right side rotor plate and move down, drive the sliding sleeve A that right side fixed mounting can move down at slide rod A, press control button, control motor B operation, drive the pivot rotation and make the hot plate rotate down, heat the material that the lower extreme was placed, press control button after heating, control motor C operates, drive screw rod B and rotate and drive screw rod cover B through the outer wall screw thread and move up, drive bearing sleeve B and move up, thereby drive the fixed plate of right side fixed mounting and move up in sliding tray B, the sliding sleeve B driving the right side fixed mounting moves upwards and stably on the outer wall of the sliding rod B, the vacuum shrinker driving the upper end fixed mounting moves upwards to press the material of the upper end fixed mounting, vacuum shrinkage is carried out to complete plastic suction, then the motor B is controlled to operate to drive the rotating shaft to rotate, so that the refrigerating plate rotates downwards to cool the material formed by suction molding, and therefore machining is completed, machining efficiency is improved, occupied space is reduced, and practicability of the device is improved.

2. Through rotating-structure, produce different types of draw-bar box as needs, the manual bolt that rotates, outwards rotate and go out the bolt from screw B and screw A in through the screw thread, then will mould lower extreme fixed mounting's inserted block and upwards extract from the through-hole in will moulding, can take out the mould, mould lower extreme fixed mounting's fixture block inject the through-hole at will changing, the bolt rotates, run through screw A and screw B and can accomplish the change, the efficiency of production is improved, the practicality of device has been increased.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic view of a front cross-sectional structure of a blister forming device for a PC draw-bar box body according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a partially enlarged structure a in fig. 1 of a blister forming device for a PC draw-bar box body according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a circuit structure of a plastic molding device for a PC draw-bar box body

In the figure: 1. a frame body; 2. a control button; 3. a column A; 4. a motor A; 5. a screw A; 6. a screw rod sleeve A; 7. a bearing bush A; 8. a fixed block; 9. a motor B; 10. rotating the plate; 11. heating plates; 12. A refrigeration plate; 13. a rotating shaft; 14. a slide bar A; 15. a sliding sleeve A; 16. a placement groove; 17. a column B; 18. A motor C; 19. a screw B; 20. a screw rod sleeve B; 21. a bearing sleeve B; 22. a slide bar B; 23. a sliding sleeve B; 24. a fixing plate; 25. a vacuum shrinker; 26. a screw A; 27. a through hole; 28. molding; 29. A screw opening B; 30. a bolt; 31. a sliding groove A; 32. a sliding groove B; 33. and (5) inserting the blocks.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The following will explain a plastic sucking molding device for a PC draw-bar box body according to an embodiment of the present invention in detail with reference to fig. 1 to 3.

Referring to fig. 1, 2 and 3, a blister forming device for a PC draw-bar box body provided by an embodiment of the present invention includes a frame body 1, a control button 2 is fixedly installed on an outer wall of a left side of the frame body 1, a placing groove 16 is fixedly installed on an inner wall of an upper side of the frame body 1, a cylinder A3 is fixedly installed on outer walls of upper ends of left and right sides of the frame body 1, a motor A4 is fixedly installed on an outer wall of an upper end of a cylinder A3 of the left side of the frame body 1, a lower end of the motor A4 is rotatably connected with a screw A5 through a cylinder A3, an outer wall of the screw A5 is rotatably connected with a screw sleeve A6, an outer wall of the screw sleeve A6 is fixedly connected with a bearing sleeve A7, a slide bar a14 is fixedly installed inside a cylinder A3 of the right side of the frame body 1, a slide bar a14 is movably connected with a sliding sleeve a15, a sliding groove a31 is fixedly, a motor B9 is fixedly installed inside the left fixed block 8, a rotating plate 10 is rotatably installed inside the rotating shaft 13, a refrigerating plate 12 is fixedly installed at the upper end of the rotating plate 10, a heating plate 11 is fixedly installed at the lower end of the rotating plate 10, a cylinder B17 is fixedly installed on the outer walls of the lower ends of the left side and the right side of the frame body 1, a motor C18 is fixedly installed at the lower end of a cylinder B17 at the left side of the frame body 1, a screw B19 is rotatably connected at the upper end of the motor C18, a screw sleeve B20 is rotatably sleeved on the outer wall of the screw B19, a bearing sleeve B20 is fixedly sleeved on the outer wall of the screw sleeve B21, a sliding rod B22 is fixedly installed inside the cylinder B17 at the right side of the frame body 1, a sliding sleeve B23 is movably sleeved on the outer wall of the sliding rod B59626, a sliding groove B32 is fixedly installed inside the cylinder B17, a fixed plate 24 is, an inserting block 33 is fixedly arranged in the through hole 27, a plastic die 28 is fixedly arranged at the upper end of the inserting block 33, a screw B29 is fixedly arranged in the inserting block 33, a screw A26 is fixedly arranged in the two sides of the vacuum shrinker 25, and a bolt 30 is rotatably arranged in the screw A26 and the screw B29.

Referring to fig. 1, a screw thread is fixedly installed on the outer wall of a screw rod A5, a screw thread matched with the screw thread on the outer wall of a screw rod A5 is fixedly installed on the inner wall of a screw rod sleeve A6, a rotating structure is formed, when a machining operation needs to be started, a material to be machined is placed in a placing groove 16, a control button 2 is pressed, a motor A4 is controlled to operate, a screw rod A5 is driven to rotate, a screw rod sleeve A6 is driven to move downwards through the screw thread on the outer wall, a bearing sleeve A7 is driven to move downwards, a fixing block 8 is driven to move downwards in a sliding groove a31, a right rotating plate 10 is driven to move downwards, a sliding sleeve a15 fixedly installed on the right side is driven to move downwards in a sliding rod a14, a control button 2 is pressed, a motor B9 is controlled to operate, a rotating shaft 13 is driven to rotate so as to rotate a heating plate 11 downwards, the material placed at the lower end is heated, the control button 2 is pressed, a motor C539, drive bearing housing B21 rebound, thereby drive right side fixed mounting's fixed plate 24 rebound in sliding tray B32, the sliding sleeve B23 that drives right side fixed mounting makes progress stationary movement at slide bar B22 outer wall, the vacuum shrinker 25 that drives upper end fixed mounting moves upward and supports the material of pressing upper end fixed mounting, carry out vacuum shrink and just accomplish the plastic uptake, then control motor B9 operation, it rotates to drive pivot 13, make refrigeration board 12 rotate down, cool down the material that the plastic uptake becomes, thereby accomplish processing, the efficiency of processing has been improved, occupation space has been reduced, the practicality of device has been improved.

Referring to fig. 1, a screw thread is fixedly installed on the outer wall of a screw B19, a screw thread matching with the screw thread on the outer wall of a screw B19 is fixedly installed on the inner wall of a screw sleeve B20, so as to form a rotating structure, when it is needed to start processing, a material to be processed is placed in a placing groove 16, a control button 2 is pressed, a motor A4 is controlled to operate, a screw A5 is driven to rotate, a screw sleeve A6 is driven to move downwards through the screw thread on the outer wall, a bearing sleeve a7 is driven to move downwards, so as to drive a fixing block 8 to move downwards in a sliding groove a31, so as to drive a right rotating plate 10 to move downwards, a sliding sleeve a15 fixedly installed on the right side is driven to move downwards in a sliding rod a14, a control button 2 is pressed, a rotating motor B9 is controlled to operate, a rotating shaft 13 is driven to rotate so as to rotate a heating plate 11 downwards, the material placed at the lower end is heated, the control button 2 is pressed, a control motor, drive bearing housing B21 rebound, thereby drive right side fixed mounting's fixed plate 24 rebound in sliding tray B32, the sliding sleeve B23 that drives right side fixed mounting makes progress the steady movement at slide bar B22 outer wall, the vacuum shrinker 25 rebound that drives upper end fixed mounting supports presses upper end fixed mounting's material, carry out the vacuum shrink and just accomplish the plastic uptake, then control motor B9 operation, drive pivot 13 and rotate, make refrigeration board 12 rotate down, cool down the material that the plastic uptake becomes, thereby accomplish processing, the efficiency of processing is improved, occupation space has been reduced, the practicality of device has been improved.

Referring to fig. 1 and 2, the inner walls of the screw a26 and the screw B29 are fixedly provided with threads, the outer wall of the bolt 30 is fixedly provided with threads matched with the threads on the outer walls of the screw a26 and the screw B29 to form a rotating structure, when different types of draw-bar boxes need to be produced, the bolt 30 is manually rotated, the bolt 30 is rotated outwards from the screw B29 and the screw a26 through the threads, then the inserting block 33 fixedly arranged at the lower end of the plastic mold 28 is pulled out upwards from the through hole 27, the plastic mold 28 can be taken out, the clamping block 33 fixedly arranged at the lower end of the replaced plastic mold 28 is inserted into the through hole 27, the bolt 30 is rotated, and the replacement can be completed through the screw a26 and the screw B29, so that the production efficiency is improved, and the practicability of the device is increased.

Referring to fig. 3, the input terminal of the control button 2 is electrically connected to an external power source through a wire, the output terminal of the control button 2 is electrically connected to the input terminals of the motor a4, the motor B9, the motor C18, the heating plate 11, the refrigerating plate 12 and the vacuum shrinking machine 25 through wires, and the output terminal of the motor a4 is connected to the rotation input terminal of the screw a 5.

The motor A4, the motor B9, the motor C18, the heating plate 11, the refrigerating plate 12, the vacuum shrinking machine 25 and the control button 2 are products in the prior art, the models of the motor A4, the motor B9 and the motor C18 are HD2401-24, the manufacturer is Anchuan, the model of the control button 2 is LA38-11DN, the manufacturer is Mixi, the model of the heating plate 11 is bc-1, the manufacturer is step, the model of the refrigerating plate 12 is TCLBC-92B, the manufacturer is other, the model of the vacuum shrinking machine 25 is BS-G4525, and the manufacturer is Xinkachi.

The embodiment of the utility model provides a PC draw-bar box body plastic uptake forming device, when needing to begin to process, put the material to be processed in the standing groove 16, press control button 2, control motor A4 operates, drive screw A5 to rotate, drive screw sleeve A6 to move downwards through the outer wall screw thread, drive bearing sleeve A7 to move downwards, thereby drive fixed block 8 to move downwards in sliding tray A31, thereby drive right side revolving plate 10 to move downwards, drive sliding sleeve A15 to move downwards in sliding bar A14 through the right side fixed mounting, press control button 2, control motor B9 operates, drive pivot 13 to rotate and make heating plate 11 rotate downwards, heat the material placed at the lower end, press control button 2 after heating, control motor C18 operates, drive screw B19 to rotate and drive screw sleeve B20 to move upwards through the outer wall screw thread, drive bearing sleeve B21 to move upwards, thereby driving the fixed plate 24 fixedly arranged at the right side to move upwards in the sliding groove B32, driving the sliding sleeve B23 fixedly arranged at the right side to move upwards and stably on the outer wall of the sliding rod B22, driving the vacuum shrinker 25 fixedly arranged at the upper end to move upwards to press the material fixedly arranged at the upper end, performing vacuum shrinkage to complete plastic uptake, then the motor B9 is controlled to operate to drive the rotating shaft 13 to rotate, so that the refrigerating plate 12 rotates downwards, cooling the plastic-uptake material to finish the processing, when different types of draw-bar boxes need to be produced, manually rotating the bolt 30, rotating the bolt 30 outwards from the screw B29 and the screw A26 through threads, the insert 33 fixedly mounted at the lower end of the mold 28 is then pulled upwardly from the through hole 27, the mold 28 can be taken out, the fixture block 33 fixedly installed at the lower end of the replaced mold 28 is inserted into the through hole 27, and the bolt 30 is rotated to penetrate through the screw A26 and the screw B29, so that the replacement can be completed.

It should be noted that, the utility model relates to a PC draw-bar box plastic uptake forming device, including motor A4, motor B9, motor C18, hot plate 11, refrigeration board 12, vacuum shrinker 25 and control button 2, the part is the part that general standard spare or technical staff in the field know, and its structure and principle all are that this technical staff all can learn through the technical manual or learn through conventional experimental method.

It is apparent that those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The utility model provides a PC draw-bar box body plastic uptake forming device, a serial communication port, plastic uptake forming device includes support body (1), wherein, support body (1) left side outer wall fixed mounting has control button (2), support body (1) upside inner wall fixed mounting has standing groove (16), support body (1) left and right sides upper end outer wall fixed mounting has cylinder A (3), support body (1) left side cylinder A (3) upper end outer wall fixed mounting has motor A (4), motor A (4) lower extreme runs through cylinder A (3) and rotates and is connected with screw rod A (5), screw rod A (5) outer wall rotates and has cup jointed lead screw cover A (6), lead screw cover A (6) outer wall fixed cup jointed bearing housing A (7), support body (1) right side cylinder A (3) inside fixed mounting has slide bar A (14), slide bar A (14) outer wall activity has cup jointed slide sleeve A sliding sleeve (15), the cylinder A (3) inner side wall fixed mounting has a sliding groove A (31), the bearing sleeve A (7) and the sliding sleeve A (15) run through the sliding groove A (31) and are fixedly mounted with a fixed block (8), the fixed block (8) is rotated in the inner side to be mounted with a rotating shaft (13), the fixed block (8) is fixedly mounted with a motor B (9), the rotating shaft (13) is rotated in the inner side to be mounted with a rotating plate (10), the rotating plate (10) is fixedly mounted with a refrigerating plate (12) at the upper end, the rotating plate (10) is fixedly mounted with a heating plate (11), the cylinder B (17) is fixedly mounted on the outer wall of the lower end of the left side and the right side of the frame body (1), the motor C (18) is fixedly mounted at the lower end of the cylinder B (17) at the left side of the frame body (1), the upper end of the motor C (18), the outer wall of the screw rod sleeve B (20) is fixedly sleeved with a bearing sleeve B (21), the inside of a cylinder B (17) on the right side of the frame body (1) is fixedly provided with a sliding rod B (22), the outer wall of the sliding rod B (22) is movably sleeved with a sliding sleeve B (23), the inside of the cylinder B (17) is fixedly provided with a sliding groove B (32), the bearing sleeve B (21) and the sliding sleeve B (23) penetrate through the sliding groove B (32) and are fixedly provided with a fixing plate (24), the outer wall of the upper end of the fixing plate (24) is fixedly provided with a vacuum shrinking machine (25), the inside of the upper end of the vacuum shrinking machine (25) is fixedly provided with a through hole (27), the inside of the through hole (27) is fixedly provided with an insert block (33), the upper end of the insert block (33) is fixedly provided with a plastic mold (28), the inside of the insert block (33) is fixedly provided, and bolts (30) are rotatably arranged in the screw ports A (26) and the screw ports B (29).

2. The plastic suction forming device for the PC draw-bar box body as claimed in claim 1, wherein the screw A (5) is fixedly provided with threads on the outer wall thereof, and the screw sleeve A (6) is fixedly provided with threads on the inner wall thereof, which are matched with the threads on the outer wall of the screw A (5), thereby forming a rotating structure.

3. The plastic suction forming device for the PC draw-bar box body as claimed in claim 1, wherein the screw B (19) is fixedly provided with threads on the outer wall thereof, and the screw sleeve B (20) is fixedly provided with threads on the inner wall thereof, which are matched with the threads on the outer wall of the screw B (19), thereby forming a rotating structure.

4. The plastic uptake forming device for the PC draw-bar box body as claimed in claim 1, wherein the screw A (26) and the screw B (29) are fixedly provided with threads on the inner wall, and the bolt (30) is fixedly provided with threads on the outer wall which are matched with the threads on the outer wall of the screw A (26) and the screw B (29) to form a rotating structure.

5. The plastic suction forming device for the PC draw-bar box body according to claim 1, wherein the input end of the control button (2) is electrically connected with an external power supply through a conducting wire, the output end of the control button (2) is electrically connected with the input ends of the motor A (4), the motor B (9), the motor C (18), the heating plate (11), the refrigerating plate (12) and the vacuum shrinking machine (25) through conducting wires, and the output end of the motor A (4) is connected with the rotation input end of the screw A (5).