An automatic heat shrink tube assembly system

Abstract

The application is suitable for the field of heat shrink tube assembly, and particularly provides a heat shrink tube automatic assembly system, which comprises a rack, a conveying mechanism and a winding mechanism fixed on the rack, and a blowing mechanism; the winding mechanism comprises a support seat, an annular turntable is installed on the support seat, a rubber winding ring is installed on the annular turntable, the annular turntable is drivingly connected with a first motor, and the first motor is fixed on the support seat; the blowing mechanism comprises an air source, the air source is fixed on the rack, the air source is connected with a heating cylinder, the heating cylinder is installed on the support seat, the heating cylinder is connected with blowing cylinders through air supply cylinders, the blowing cylinders are installed on the support seat, the blowing cylinders are provided in four groups, and the four groups of blowing cylinders are evenly distributed along the central axis of the annular turntable. The blowing cylinders are evenly distributed in multiple groups, hot air after heating is blown out, the adhesive tape is heated to have adhesion, the adhesive tape is closely attached to the surface of a workpiece by the use of wind power, and air bubbles and gap residues are effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of heat shrink tubing assembly, and specifically provides an automatic heat shrink tubing assembly system. Background Technology

[0002] As a critical connection component, the reliability and stability of aviation connectors are of paramount importance. To ensure the insulation, sealing, and corrosion resistance of aviation connectors under complex operating conditions, they are typically wrapped with hot melt tape and fitted with heat shrink tubing for final protection and shaping.

[0003] Currently, the processing of such workpieces mostly relies on manual operation or semi-automatic equipment. Manual operation has significant drawbacks such as low production efficiency and poor product consistency, making it difficult to meet the demands of modern mass production. Existing semi-automatic equipment often has limited functionality, and during the winding process, the tape either becomes loose and wrinkled due to insufficient tension, or it is stretched or even broken due to excessive tension. This results in the tape failing to adhere tightly to the irregular outer surface of the aviation connector, easily leaving air bubbles or gaps. Summary of the Invention

[0004] To address the aforementioned shortcomings, this invention provides an automated heat shrink tubing assembly system, the purpose of which is to solve the problem of air bubbles or gaps easily remaining when wrapping tape around aviation plugs in the prior art.

[0005] To achieve the above objectives, the present invention provides an automatic heat shrink tubing assembly system, comprising a frame and a conveying mechanism and a winding mechanism fixed on the frame, and a blower mechanism; The winding mechanism includes a support base, an annular turntable mounted on the support base, a winding ring mounted on the annular turntable, and the annular turntable being driven and connected to a first motor, which is fixed on the support base. The blower mechanism includes an air source, which is fixed on the frame and connected to a heating cylinder. The heating cylinder is mounted on the support base and connected to a blower via an air supply cylinder. The blower is mounted on the support base and is provided in four groups, which are evenly distributed in a ring along the central axis of the annular turntable.

[0006] Preferably, the support base includes a first straight plate and a second straight plate, which are fixedly connected by a fixed shaft. A support ring is rotatably mounted on the outside of the fixed shaft. The support ring is movably disposed in a groove, which is formed on the outer circumferential surface of the annular turntable. The annular turntable is coaxially fixed with a first gear ring, which meshes with a first gear. The first gear is rotatably mounted on the second straight plate and coaxially fixed with the output shaft of the first motor.

[0007] Preferably, a sealing valve is fixed on the first straight plate, the sealing valve is connected between the blower and the air supply cylinder, an insert plate is slidably disposed inside the sealing valve, the insert plate has a through hole, one end of the insert plate is connected to the sealing valve through a first spring, and the other end of the insert plate can abut against the trigger plate, the trigger plate is fixed on the annular turntable.

[0008] Preferably, a sector gear is fixed on the trigger plate, which can mesh with the second gear ring. The second gear ring is coaxially fixed on the outer circumferential wall of the blower. The second gear ring has a first notch, and a first stop post is movably arranged in the first notch. The first stop post is fixed on the sealing valve. One end of the second spring is fixed on the second gear ring, and the other end of the second spring is fixed on the sealing valve.

[0009] Preferably, a first fixed seat is fixed on the frame, a first screw is rotatably mounted on the first fixed seat, the first screw is driven and connected to a second motor, the second motor is fixed on the frame, the first screw is threadedly engaged with a first slide, and a drying gun is fixed on the first slide by a bracket.

[0010] Preferably, a connecting platform is fixed on the bracket, and a pin is rotatably mounted on the connecting platform. One end of the pin is fixed to one end of the first connecting rod, and a rotating roller is rotatably mounted on the other end of the first connecting rod. A disc is fixed to the other end of the pin, and one end of a third spring is fixed on the disc. The other end of the third spring is fixed to the connecting platform.

[0011] Preferably, the disc has a second notch, and a second stop post is movably disposed within the second notch, the second stop post being fixed to the connecting platform.

[0012] Preferably, the conveying mechanism includes a second fixed seat fixed on the frame, a second screw rotatably mounted on the second fixed seat, the second screw being driven and connected to a third motor, the third motor being fixed on the frame, the second screw being threadedly engaged with a second slide, and a pneumatic chuck for clamping workpieces being fixed on the second slide.

[0013] Preferably, a third fixed base is fixed on the frame, a third screw is rotatably mounted on the third fixed base, the third screw is driven and connected to a fourth motor, the fourth motor is fixed on the third fixed base, the third screw is threadedly engaged with a third slide, and a heater is fixed on the third slide.

[0014] Preferably, a heat shrink tubing rack is fixed on the frame.

[0015] The purpose of this invention is to provide an automated heat shrink tubing assembly system, which has the following beneficial effects: ① Multiple sets of air blowers are evenly distributed in a ring to blow heated air. This heats the tape to make it sticky and the airflow helps the tape adhere more tightly to the workpiece surface, effectively reducing air bubbles and gaps. A combination of a sealing valve, a gate plate, and a trigger plate allows for periodic on / off of the airflow, activating the blowers only when the tape is wound to a specific position, avoiding energy waste. Simultaneously, a sector gear and a second gear ring dynamically adjust the blowing angle to ensure precise coverage of the contact point between the tape and the workpiece. The hot air is always precisely directed at the contact point, rather than in a fixed direction, ensuring efficient utilization of both airflow and heat. Attached Figure Description

[0016] Figure 1 This is the front view of the heat shrink tubing automatic assembly system; Figure 2 This is an isometric drawing of an automated heat shrink tubing assembly system; Figure 3 This is a partial isometric view of the winding mechanism; Figure 4 This is a first-person view diagram illustrating the interaction between the insert plate and the trigger plate. Figure 5 This is a schematic diagram of the interaction between the insert plate and the trigger plate from a second-view perspective; Figure 6 This is a diagram showing the installation of the drying gun; Figure 7 yes Figure 6 A magnified view of a section at point A in the middle; Figure 8 This is a schematic diagram of the conveying mechanism.

[0017] In the diagram: 1-Frame; 10-Workbench; 11-Support leg; 20-Support base; 21-Annular turntable; 22-First motor; 23-Air source; 24-Heating cylinder; 25-Air delivery cylinder; 26-Blower; 29-Glue ring; 30-Fixed shaft; 31-Support ring; 32-Groove; 33-First gear ring; 34-First gear; 40-Sealing valve; 42-Insert plate; 43-First spring; 44-Through hole; 45-Trigger plate; 50-Sector gear; 51-Second gear ring; 52-First notch; 53-First stop post; 54-Second spring; 60-First fixed base; 6 1-First screw; 62-Second motor; 63-First slide; 64-Bracket; 65-Drying gun; 70-Connecting platform; 71-Pin; 72-First connecting rod; 73-Roller; 74-Disc; 75-Third spring; 76-Second notch; 77-Second stop; 80-Second fixed seat; 81-Second screw; 82-Third motor; 83-Second slide; 84-Pneumatic chuck; 90-Third fixed seat; 91-Third screw; 92-Fourth motor; 93-Third slide; 94-Heater; 99-Heat shrink tubing holder; 201-First straight plate; 202-Second straight plate. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0019] like Figures 1-8 As shown, an automatic heat shrink tubing assembly system includes a frame 1, which serves as an integral support structure welded from steel. The frame 1 includes a horizontally placed worktable 10 and four support legs 11 fixed on the worktable 10. The surface of the frame 1 is treated with rust prevention. A conveying mechanism and a winding mechanism are installed on the frame 1, as well as a blower mechanism. The conveying mechanism is used to convey aviation connectors, the winding mechanism is used to wrap tape around the aviation connectors, and the blower mechanism can increase the adhesion of the tape wrapping.

[0020] Specifically, the conveying mechanism includes a second fixed base 80 fixed on the frame 1, on which a second screw 81 is rotatably mounted via bearings. The second screw 81 is driven and connected to a third motor 82, meaning the output shaft of the third motor 82 is coaxially fixed with the second screw 81. The third motor 82 is a servo motor, fixed to the frame 1 by bolts. The second screw 81 is threaded into a second slide table 83, on which a pneumatic chuck 84 is fixed by bolts. The pneumatic chuck 84 is used to clamp the aviation plug. The third motor 82 drives the second screw 81 to rotate, causing the second slide table 83 to move, thereby conveying the aviation plug to the winding station.

[0021] The winding mechanism includes a support base 20, which is bolted to the frame 1. An annular turntable 21 is mounted on the support base 20. A wrapping ring 29 is rotatably mounted on the annular turntable 21 via a damping shaft. The wrapping ring 29 carries and guides the hot melt adhesive tape. The annular turntable 21 is driven by a first motor 22, which is a servo motor and bolted to the support base 20. The first motor 22 drives the annular turntable 21 to rotate, thereby causing the wrapping ring 29 to perform the winding operation.

[0022] The blower mechanism includes an air source 23, which is an air compressor, fixed to the frame 1. The air source 23 is connected to a heating cylinder 24 via a high-pressure resistant hose. The heating cylinder 24 contains an electric heating element that heats the air to a predetermined temperature. The heating cylinder 24 is bolted to a support base 20. The heating cylinder 24 is connected to a blower 26 via an air supply pipe 25, which is a stainless steel tube with an insulation layer. Four sets of blowers 26 are arranged evenly in a ring along the central axis of the annular turntable 21, forming a heating array surrounding the workpiece. Each set of blowers 26 includes a gas outlet facing the area of ​​the rubber-wrapped ring 29.

[0023] The central axis of the first set of blowers 26 forms an angle of 45° with the horizontal line.

[0024] As a further explanation of this embodiment, the support base 20 includes a first straight plate 201 and a second straight plate 202. The first straight plate 201 and the second straight plate 202 are made of steel plates and are fixedly connected by a fixed shaft 30. The fixed shaft 30 is a high-strength steel shaft, and a support ring 31 is rotatably mounted on the outer side of the fixed shaft 30 via a bearing. The support ring 31 is movably configured in a groove 32, which is formed on the outer circumferential surface of the annular turntable 21, forming a movable fit, so that the annular turntable 21 can rotate smoothly. The annular turntable 21 is coaxially fixed with a first gear ring 33, which is a gear ring with multiple teeth arranged on the outer side, and is fixedly connected to the annular turntable 21 by bolts. The first gear ring 33 meshes with a first gear 34, which is rotatably mounted on the second straight plate 202 via a bearing. The first gear 34 is coaxially fixed with the output shaft of the first motor 22, and the first motor 22 drives the first gear 34 to rotate, thereby driving the first gear ring 33 and the annular turntable 21 to rotate. When the first gear 34 drives the first gear ring 33 to rotate, the adhesive wrapping ring 29 and the tape can rotate accordingly along the circumference of the aviation plug, thereby wrapping the tape around the outer surface of the aviation plug.

[0025] The damping shaft is fixedly mounted on the annular turntable 21, and the adhesive wrapping ring 29 is sleeved on the damping shaft. During the tape wrapping process, the friction generated between the adhesive wrapping ring 29 and the damping shaft during rotation will tighten the tape, making the tape wrapping process more stable and achieving the wrapping requirements.

[0026] As a further explanation of this embodiment, a sealing valve 40 is fixed on the first straight plate 201. The sealing valve 40 is connected between the blower 26 and the air supply cylinder 25 to form an air passage. Specifically, one side of the sealing valve 40 is fixed and connected to the air supply cylinder 25, and the other side of the sealing valve 40 is rotatably connected to the blower 26. A slide plate 42 is slidably disposed inside the sealing valve 40. The slide plate 42 is made of a material with a low coefficient of friction. A through hole 44 is provided on the slide plate 42, allowing airflow to pass through when the through hole 44 is aligned with the air passage. One end of the slide plate 42 is connected to the sealing valve 40 by a first spring 43, which provides a restoring force. The other end of the slide plate 42 can abut against a trigger plate 45, which is located behind the rotation path of the rubber-wrapped ring 29. The trigger plate 45 is fixed to the annular turntable 21 by bolts. When the annular turntable 21 rotates, the trigger plate 45 periodically pushes the insert plate 42 to compress the first spring 43, aligning or misaligning the through holes 44, thereby controlling the airflow. After the tape adheres to the workpiece, the blower 26 blows air onto the adhered position. This heats the tape, giving it some stickiness, and the airflow helps the tape adhere more tightly to the workpiece surface. The airflow is periodically switched on and off by the movement of the insert plate 42, supplying air only when needed, thus avoiding energy waste.

[0027] As a further explanation of this embodiment, since the contact position between the tape and the workpiece is constantly changing, relying solely on the four blowers 26 to directly blow air can only guarantee the adhesion of the tape at the position directly facing the blower. Therefore, it is necessary to dynamically adjust the blowing angle so that the hot air from the blowers 26 can cover more areas. Specifically, a sector gear 50 is welded and fixed to the trigger plate 45. The sector gear 50 can mesh with the second gear ring 51, which is coaxially fixed to the outer circumferential wall of the blower 26. When the sector gear 50 meshes with the second gear ring 51, it drives the second gear ring 51 to rotate. One end of a second spring 54 is fixed to the second gear ring 51, and the other end of the second spring 54 is fixed to the sealing valve 40. The second spring 54 is a torsion spring, providing a reset torque. The second gear ring 51 has a first notch 52, within which a first stop post 53 is movably disposed. The first stop post 53 is fixed to the sealing valve 40. When the sector gear 50 and the second gear ring 51 are no longer meshed, the second gear ring 51 is reset under the torque force of the second spring 54. The first stop 53 can limit the rotation range and prevent excessive rotation. By driving the second gear ring 51 through the sector gear 50, the angle of the air outlet of the blower 26 is adjusted. The hot air can always be blown accurately to the contact position between the tape and the workpiece, rather than in a fixed direction, ensuring that the wind and heat are used efficiently.

[0028] As a further explanation of this embodiment, a first fixing seat 60 is fixed to the frame 1 by bolts, and a first screw 61 is rotatably mounted on the first fixing seat 60 via bearings. The first screw 61 is driven and connected to a second motor 62, which is a stepper motor, and is fixed to the frame 1 by bolts. The first screw 61 is threadedly engaged with a first slide 63, and a drying gun 65 is fixed to the first slide 63 via a bracket 64. The drying gun 65 is horizontally positioned with its nozzle aligned with the workpiece. The second motor 62 drives the first screw 61 to rotate, causing the first slide 63 to move linearly, thereby adjusting the position of the drying gun 65. The drying gun 65 is a hot air gun, and the temperature of the hot air it generates is higher than the temperature of the hot air blown out by the blower 26, which can heat the hot melt adhesive tape to a slightly molten state in a shorter time. Heating before winding allows the hot melt adhesive tape to become sticky and better adhere to the workpiece, while heating after winding makes the hot melt adhesive tape easier to tear.

[0029] A connecting platform 70 is welded to the bracket 64, and a pin 71 is rotatably mounted on the connecting platform 70 via bearings. One end of the pin 71 is fixed to one end of the first connecting rod 72, and the other end of the first connecting rod 72 is rotatably mounted to a roller 73 via bearings. The first connecting rod 72 is inclined from top to bottom, from near the pin 71 to away from the pin 71, and the angle between the first connecting rod 72 and the horizontal line is preferably 10°. This arrangement allows the roller 73 to first contact the tape and press it onto the workpiece when the first fixed seat 60 moves towards the workpiece under the drive of the first screw 61. Subsequently, the drying gun 65 heats the tape, which is more conducive to the tearing of the tape after winding. A disc 74 is fixed to the other end of the pin 71, and one end of a third spring 75 is fixed to the disc 74. The other end of the third spring 75 is fixed to the connecting platform 70. The third spring 75 is a torsion spring, providing a return torque force for the disc 74.

[0030] As a further explanation of this embodiment, a second notch 76 is provided on the disk 74, and a second stop 77 is movably disposed within the second notch 76. The second stop 77 is fixed on the connecting platform 70. The second stop 77 limits the rotation angle of the disk 74 to prevent excessive rotation.

[0031] As a further explanation of this embodiment, a heat shrink tubing holder 99 is fixed on the frame 1. The heat shrink tubing holder 99 is used to carry the heat shrink tubing. After the aviation plug is wrapped with tape, it moves towards the heat shrink tubing under the conveying mechanism until the aviation plug is inserted into the heat shrink tubing. A third fixing seat 90 is fixed to the frame 1 by bolts, and a third screw 91 is rotatably mounted on the third fixing seat 90 via bearings. The third screw 91 is driven and connected to a fourth motor 92, which is fixed to the third fixing seat 90 by bolts. The third screw 91 is threaded into a third slide 93, and a heater 94 is fixed to the third slide 93 by bolts. The heater 94 has a heating groove, the shape of which is adapted to the shape of the aviation plug and the heat shrink tubing. The heater 94 is used for final heating and shaping of the assembled aviation plug and heat shrink tubing. The fourth motor 92 drives the third screw 91 to rotate, causing the third slide 93 to move, thereby adjusting the position of the heater 94.

[0032] Working principle: The aviation plug is held by a pneumatic chuck 84, and the heat shrink tubing is placed on the heat shrink tubing rack 99, ready for subsequent assembly. Then, the third motor 82 drives the second screw 81 to rotate, causing the second slide 83 to move linearly. The pneumatic chuck 84 carries the aviation plug to the working area of ​​the winding mechanism, i.e., the position of the wrapping ring 29. The second motor 62 drives the first screw 61 to rotate, causing the first slide 63 to move. The drying gun 65 is adjusted to approach the aviation plug. The rotating roller 73 first contacts the tape and presses it onto the surface of the aviation plug. The drying gun 65 heats the tape, causing the hot melt tape to slightly melt. The drying gun 65 then returns to its initial position to avoid interfering with the rotational winding process. The first motor 22 drives the first gear 34 to rotate, causing the first gear ring 33 and the annular turntable 21 to rotate. The wrapping ring 29 rotates around the aviation plug with the annular turntable 21, wrapping the tape around the outer surface of the aviation plug.

[0033] Air source 23 provides compressed air, which is heated by heating cylinder 24 and then blown out as hot air through air delivery cylinder 25 and blower 26. Blower 26 is arranged in a ring around the workpiece, and the hot air increases the adhesion of the tape. When the annular turntable 21 rotates, trigger plate 45 periodically pushes insert plate 42, compressing first spring 43, aligning through hole 44 with the air path, allowing airflow. After trigger plate 45 moves away, first spring 43 returns to its original position, closing the air path. Trigger plate 45 is located behind the rotation path of wrapping ring 29, ensuring that the blowing heats the portion of tape wrapped around the aviation connector, increasing tape adhesion. Simultaneously, sector gear 50 meshes with second gear ring 51, driving second gear ring 51 to rotate and adjust the angle of the air outlet of blower 26, ensuring the blowing angle follows the tape winding process.

[0034] After wrapping four turns of tape, the wrapping action is completed. The second motor 62 drives the first screw 61 to rotate, causing the first slide 63 to move. The adjusting gun 65 moves towards the aviation plug, and the rotating roller 73 contacts and presses the tape on the surface of the aviation plug. The gun 65 is started to heat the tape, causing the hot melt tape to slightly melt, making it easier to tear the tape. The first motor 22 drives the first gear 34 to rotate, driving the first gear ring 33 and the annular turntable 21 to rotate, causing the wrapping ring 29 to rotate at a certain angle and tear the tape.

[0035] Subsequently, the conveying mechanism operates again. The third motor 82 drives the second screw 81 to rotate, causing the second slide 83 to move and convey the aviation plug towards the heat shrink tubing rack 99 until the aviation plug is inserted into the heat shrink tubing. The fourth motor 92 drives the third screw 91 to rotate, causing the third slide 93 to move and adjust the position of the heater 94, bringing it close to the assembled aviation plug and heat shrink tubing. The heater 94 provides final heating to the assembled aviation plug and heat shrink tubing for 8-10 seconds. After heating is complete, the heater 94 returns to its original position under the drive of the fourth motor 92.

[0036] This invention is not limited to the specific embodiments described above. Any modifications made by those skilled in the art based on the above concept without creative effort are within the scope of protection of this invention.

Claims

1. An automatic heat shrink tubing assembly system, comprising a frame (1) and a conveying mechanism and a winding mechanism fixed on the frame (1), characterized in that, It also includes the hair dryer mechanism; The winding mechanism includes a support base (20), an annular turntable (21) is mounted on the support base (20), a winding ring (29) is mounted on the annular turntable (21), the annular turntable (21) is driven by a first motor (22), and the first motor (22) is fixed on the support base (20); The blower mechanism includes an air source (23), which is fixed on the frame (1). The air source (23) is connected to a heating cylinder (24), which is mounted on the support base (20). The heating cylinder (24) is connected to a blower (26) via an air supply cylinder (25). The blower (26) is mounted on the support base (20). There are four sets of blowers (26), which are evenly distributed in a ring along the central axis of the annular turntable (21). The support base (20) includes a first straight plate (201) and a second straight plate (202). The first straight plate (201) and the second straight plate (202) are fixedly connected by a fixed shaft (30). A support ring (31) is rotatably mounted on the outside of the fixed shaft (30). The support ring (31) is movably configured in a groove (32). The groove (32) is opened on the outer circumferential surface of the annular turntable (21). The annular turntable (21) is coaxially fixed with a first gear ring (33). The first gear ring (33) meshes with a first gear (34). The first gear (34) is rotatably mounted on the second straight plate (202). The first gear (34) is coaxially fixed with the output shaft of the first motor (22). A sealing valve (40) is fixed on the first straight plate (201). The sealing valve (40) is connected between the blower (26) and the air supply cylinder (25). A slide plate (42) is slidably arranged inside the sealing valve (40). A through hole (44) is opened on the slide plate (42). One end of the slide plate (42) is connected to the sealing valve (40) through a first spring (43). The other end of the slide plate (42) can abut against the trigger plate (45). The trigger plate (45) is fixed on the annular turntable (21).

2. The automatic assembly system for heat shrink tubing according to claim 1, characterized in that, A sector gear (50) is fixed on the trigger plate (45). The sector gear (50) can mesh with the second gear ring (51). The second gear ring (51) is coaxially fixed on the outer circumferential wall of the blower (26). The second gear ring (51) has a first notch (52). A first stop post (53) is movably arranged in the first notch (52). The first stop post (53) is fixed on the sealing valve (40). One end of the second spring (54) is fixed on the second gear ring (51). The other end of the second spring (54) is fixed on the sealing valve (40).

3. The automatic assembly system for heat shrink tubing according to claim 1, characterized in that, A first fixed seat (60) is fixed on the frame (1). A first screw (61) is rotatably mounted on the first fixed seat (60). The first screw (61) is driven and connected to a second motor (62). The second motor (62) is fixed on the frame (1). The first screw (61) is threadedly engaged with a first slide (63). A drying gun (65) is fixed on the first slide (63) via a bracket (64).

4. The automatic assembly system for heat shrink tubing according to claim 3, characterized in that, A connecting platform (70) is fixed on the bracket (64). A pin (71) is rotatably mounted on the connecting platform (70). One end of the pin (71) is fixed to one end of the first connecting rod (72). A roller (73) is rotatably mounted on the other end of the first connecting rod (72). A disc (74) is fixed to the other end of the pin (71). One end of a third spring (75) is fixed on the disc (74). The other end of the third spring (75) is fixed on the connecting platform (70).

5. The automatic heat shrink tubing assembly system according to claim 4, characterized in that, The disc (74) has a second notch (76), and a second stop (77) is movably arranged in the second notch (76). The second stop (77) is fixed on the connecting platform (70).

6. The automatic assembly system for heat shrink tubing according to claim 1, characterized in that, The conveying mechanism includes a second fixed seat (80) fixed on the frame (1), a second screw (81) rotatably mounted on the second fixed seat (80), the second screw (81) being driven and connected to a third motor (82), the third motor (82) being fixed on the frame (1), the second screw (81) being threadedly engaged with a second slide (83), and a pneumatic chuck (84) for clamping workpieces being fixed on the second slide (83).

7. The automatic assembly system for heat shrink tubing according to claim 2, characterized in that, A third fixed seat (90) is fixed on the frame (1). A third screw (91) is rotatably mounted on the third fixed seat (90). The third screw (91) is driven and connected to a fourth motor (92). The fourth motor (92) is fixed on the third fixed seat (90). The third screw (91) is threadedly engaged with a third slide (93). A heater (94) is fixed on the third slide (93).

8. The automatic assembly system for heat shrink tubing according to claim 2, characterized in that, A heat shrink tubing rack (99) is fixed on the frame (1).

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