A wiring harness heat shrinkage device suitable for tool plate assembly line operation

Abstract

The utility model discloses a harness heat shrinkage equipment suitable for tooling plate assembly line operation belongs to harness automatic production equipment field. The device includes the online heat shrinkage machine and electric control cabinet of installation on the mobile platform, and the online heat shrinkage machine can rotate within a certain angle in horizontal direction to adapt to the harness heat shrinkage of different scenes, and the online heat shrinkage machine includes the shell body, heating cavity, the single head fixture, the jaw assembly and the jaw elevating system, and the opening of heating cavity faces upwards, and the harness that is to be heat shrunk is clamped through the jaw assembly and is driven under the jaw elevating system, enters heating cavity to realize heat shrinkage or leaves heating cavity after heat shrinkage, and the outside wall of shell body is equipped with the single head fixture, and the single head fixture includes the adapter bar, the rotating lever, the rotating lever guide seat, the rotating lever knob and the single head line hanging plate. The utility model discloses the equipment volume is small, need not frequent adjustment, simple operation can be adapted to the harness branch heat shrinkage of different form, and cooperate the single head harness heat shrinkage pipe heat shrinkage single head fixture.

Description

Technical Field

[0001] This utility model belongs to the field of automated wire harness production equipment, specifically relating to a wire harness heat shrinking device suitable for tooling plate assembly line operations. Background Technology

[0002] In the field of automated wire harness production, due to the wide variety of wire harness bodies, there are also various wire harness production methods and processes. Among the diverse types of wire harnesses, there exists a highly integrated wire harness body. To achieve functional integration, in addition to the main body, it also includes numerous wire harness branches of varying diameters. These branches are connected to the main body via methods such as ultrasonic welding. The weld points are exposed and require sealing and insulation using heat shrink tubing to protect them. In the wire heat shrinking process, the main body of the wire harness is fixed to a fixture plate (due to the typically long length and numerous branches of the wire harness, the fixture plate used for fixing is also large). Multiple fixture plates form a closed-loop production line, with multiple stations arranged on the production line to perform operations such as gluing and heat shrinking. Typically, during wire harness production, the production line runs continuously at a certain speed. The time allotted for each station is precisely calculated and designed. Especially when there are many branch points to process, multiple stations need to collaborate. Effectively allocating the time for each station not only reduces human error during operation but also coordinates the collaboration of multiple stations, making the entire process smooth. Therefore, accurately controlling the operation time required for each station in the entire process is of paramount importance.

[0003] Currently, the main method for heat shrinking the aforementioned wire harness heat shrink tubing is to use heat shrink equipment. However, most heat shrink equipment on the market is quite large and cannot move freely with the tooling plates on the production line. At the same time, the branch lines of the wire harness body are not too long. This means that even if the distance between the large heat shrink equipment and the tooling plate is reduced, the wire harness cannot be heat-shrinked. Moreover, the environment of such highly integrated wire harness bodies is very complex and not suitable for the use of large heat shrink equipment. To meet the above requirements, the heat shrinking step needs to be separated from the main process. After completing other processes on the tooling plate, operators need to collect the wire harnesses and move them to the heat shrinking area for heat shrinking. This process of collecting and organizing the wires wastes time, and there is a risk of breakage for some small-diameter wire harnesses. Some wire harness manufacturers use heat guns for heat shrinking, requiring operators to visually assess the shrinking process, which introduces human error. This results in variations in the amount of excess adhesive, and significant differences necessitate rework. Secondary rework disrupts the original process rhythm and affects overall work efficiency. Double-walled heat shrink tubing releases highly viscous adhesive when heated, which is extremely difficult to peel off after curing. During rework, this can damage the wire harness itself or its branches. Damaged wire harnesses require re-welding branches or are scrapped, wasting costs. Furthermore, the factory needs to allocate a separate area for heat shrinking equipment, further increasing costs.

[0004] Various types of online heat shrink equipment designed for use with production lines have emerged on the market. These devices use large moving guides fixed in specific positions and can move up, down, left, and right. However, these devices have some problems: they are modified versions of a type of heat shrink machine called a "swallowing-type" machine, which is large and occupies a lot of space, reducing the operator's workspace; the device is fixed in a specific position, and if a branch is not long enough, the position needs to be frequently adjusted by switching the main valve, wasting time; the opening of the heating chamber is fixed and opposite to the human body, so different branch shapes of the line need to be manually adjusted to a specific shape for heat shrinking, reducing work efficiency. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies, solve the problems existing in the traditional online heat shrinking process of wire harnesses, and provide a wire harness heat shrinking device suitable for tooling assembly line operations. This device is small in size, lightweight, easy to operate, and highly adjustable, adaptable to various types of wire harness heat shrinking. The orientation of the heating chamber facilitates operation and significantly improves work efficiency.

[0006] The specific technical solution adopted in this utility model is as follows: This utility model provides a wire harness heat shrinking device suitable for tooling plate assembly line operation, including an online heat shrink machine and an electrical control cabinet installed on a mobile platform, the electrical control cabinet being electrically connected to the online heat shrink machine; the mobile platform is set on one side of the tooling plate used to fix the wire harness body and can move up, down, left, and right; the online heat shrink machine can rotate in the horizontal direction to adapt to different scenarios of wire harnesses to be heat-shrinked. The online heat shrink machine includes an outer shell, a heating chamber, a single-ended fixture, a gripper assembly, and a gripper lifting mechanism. The inner cavity of the outer shell contains a heating chamber that can be opened and closed via a chamber opening and closing cylinder, with the opening of the heating chamber facing upwards. A gripper assembly is installed on the top of the outer shell above the heating chamber, and a gripper lifting mechanism is located at the bottom of the gripper assembly. The wire harness to be heat-shrinked, held by the gripper assembly, can enter the heating chamber for heat shrinking or leave the heating chamber after heat shrinking is completed, driven by the gripper lifting mechanism. The outer wall of the outer shell is provided with… A single-ended fixture is provided, comprising an adapter rod, a rotating rod, a rotating rod guide seat, a rotating rod knob, and a single-ended wire hanger plate. The rotating rod is vertically arranged and fixed to the outer wall of the housing via the rotating rod guide seat. The rotating rod can rotate and move up and down within the rotating rod guide seat. A horizontally arranged adapter rod is fixed to the top of the rotating rod via a detachable rotating rod knob. The extension length of the adapter rod can be changed via the rotating rod knob. The adapter rod can be clamped and fixed by a gripper assembly, and one end of it is provided with a single-ended wire hanger plate for supporting the single-ended wire harness and positioning the heat shrink tubing.

[0007] Preferably, the mobile platform is slidably connected to a vertically arranged guide shaft, and the bottom of the guide shaft is slidably connected to a horizontal bottom guide rail, so as to drive the online heat shrink machine to move in both vertical and horizontal directions.

[0008] Preferably, the bottom of the online heat shrink machine is fixed to the mobile platform by a support arm, and a protruding steering handle is provided on the outer side wall of the outer shell; the bottom of the online heat shrink machine is provided with a rotating mechanism, which allows the online heat shrink machine to rotate horizontally around the connection point with the support arm by means of the steering handle, thereby changing the direction of the heating cavity to adapt to different scenarios of heat shrinking wire harnesses.

[0009] Furthermore, the rotating mechanism can be steplessly adjusted and stopped within the rotation angle range.

[0010] Preferably, the heating chamber includes two semi-circular heating elements, which, when closed, form an annular structure in the middle for placing the wire harness to be heated; the lower part of each semi-circular heating element is fixed to a cavity fixing block via a cavity adapter plate, and the cavity fixing block is fixed to a cavity opening and closing cylinder, which controls the opening and closing operation of the semi-circular heating elements.

[0011] Furthermore, the outer shell includes a mounting base plate, a mounting top plate, and a middle enclosure plate, which together form a relatively enclosed inner cavity. The two semi-circular heating elements within the inner cavity are surrounded by an insulation shell for heat preservation. Outside the insulation shell are a left and right protective cover for heat insulation of the heating cavity. A cavity heat insulation cover is located outside the left and right protective covers. A ventilation opening is opened at the top of the cavity heat insulation cover. Gaps exist between the left and right protective covers and the cavity heat insulation cover, forming a ventilation channel. A cavity cooling fan is located on one side of the ventilation channel. Through the suction of the cavity cooling fan, external air can carry away the heat dissipated from the heating cavity through the ventilation opening and ventilation channel, and then be discharged from the cavity cooling fan.

[0012] Preferably, the gripper assembly includes a left gripper and a right gripper, and the left gripper and the right gripper are respectively connected to gripper cylinders for controlling opening and closing; the two gripper cylinders can be controlled by the left start button and the right start button respectively to realize the opening and closing of the left gripper and the right gripper.

[0013] Furthermore, the gripper lifting mechanism includes a lifting cylinder, a lifting base plate, and a lifting guide rail; the two gripper cylinders are fixed on the lifting base plate by an adapter block; the lifting cylinder drives the lifting base plate to move up and down along the lifting guide rail, so as to drive the wire harness to be heat-shrink into the heating chamber for heat shrinking.

[0014] Preferably, a cooling nozzle is provided on the upper outer side of the heating chamber, which can spray compressed air to cool the heat-shrinkable tube after heat shrinking.

[0015] Compared with the prior art, this utility model has the following advantages: 1) Through practical production application, this utility model effectively solves the process flow that requires a separate heat shrinking step, eliminating the need for operators to handle, pick up, and separate wires, thus avoiding damage to the wire harness and its branches and saving operation time. Using this equipment for heat shrinking allows for precise control of the shrinking time, enabling more rational allocation of production line operation time and improving work efficiency. Compared with currently available online heat shrinking equipment, this utility model design achieves smaller size and lighter weight. The smaller size saves more operating space, the smaller size can accommodate more branches of varying lengths, and the lighter weight results in a lower overall weight. Adjustments are quicker; the rotatable design of the online heat shrink machine further increases its flexibility, allowing for heat shrinking of wire harness branches by adjusting the machine itself, rather than requiring the wire harness branches to adapt to the machine; simply rotate the online heat shrink machine using the steering handle, eliminating the need for secondary operations to fix the position, allowing for movement as needed; the upward-facing heating chamber design better suits the wire feeding and heat shrinking habits of workers on the assembly line; the entire machine adopts a centrally symmetrical design, with components such as the single-head fixture, chamber adapter plate, and support arm all interchangeable, adaptable to different fixed positions on different production lines, and easy to assemble and disassemble.

[0016] 2) The equipment of this utility model not only has a good improvement effect in online heat shrinking, but also has a small size and does not have large requirements in terms of floor space. Therefore, it can be used in conjunction with many other equipment, such as ultrasonic welding machines or crimping machines, to achieve direct heat shrinking after wire harness welding / crimping, saving labor costs; and to replace equipment with large human error such as hot air guns in some processes, ensuring the consistency of product heat shrinking effect, etc. Attached Figure Description

[0017] Figure 1 This is a schematic diagram illustrating the relative positions of the tooling assembly line and the online heat shrink machine; Figure 2 This is a schematic diagram illustrating the relative positions of the tooling assembly line and the conventional side-mounted online heat shrink machine (i.e., side-mounted equipment, which belongs to the prior art); Figure 3 This is a schematic diagram used to describe the relative positions of the tooling plate production line and the conventional front-end online heat shrink machine (i.e., front-end equipment, which belongs to the prior art); Figure 4 This is a schematic diagram used to describe the structure of an online heat shrink machine; Figure 5 This is a schematic diagram used to describe the gripper lifting mechanism of an online heat shrink machine; Figure 6 This is a schematic diagram used to describe the heating chamber and heat dissipation method of an online heat shrink machine; Figure 7 This is a schematic diagram used to describe the structure of a single-head fixture for an online heat shrink machine; Figure 8This is a schematic diagram used to describe the heat shrinking location of conventional wire harness branches in an online heat shrink machine; Figure 9 It is used to describe a schematic diagram of a conventional wire harness branching and laying out; Figure 10 This is a schematic diagram used to describe the heat shrinking of conventional wire harness branches; Figure 11 This is a schematic diagram used to describe the branching positions of short single-ended wire harnesses in an online heat shrink machine; Figure 12 This is a schematic diagram used to describe the rotation of the head of an online heat shrink machine; Figure 13 This is a schematic diagram used to describe the branching and laying of a short single-ended wire harness; Figure 14 This is a schematic diagram used to describe the branching heat shrink of a short, single-ended wire harness; The attached diagram is labeled as follows: Tooling plate 1, wire harness body 2, conventional wire harness branch 2-1, long single-ended wire harness branch 2-2, short single-ended wire harness branch 2-3, moving platform 3, online heat shrink machine 4, electrical control cabinet 5, support arm 6, mounting base plate 7, mounting top plate 8, left gripper 9, right gripper 10, left start button 11, right start button 12, heating chamber 13, semi-circular heating element 13-1, left protective cover of heating chamber 13-2, right protective cover of heating chamber 13-3, and chamber adapter plate 1. 3-4, cavity fixing block; 13-5, cavity opening and closing cylinder; 13-6, cavity heat insulation cover; 13-7, cavity cooling fan; 13-8, cooling nozzle; 14, single-head fixture; 15, adapter rod; 15-1, rotating rod; 15-2, rotating rod guide seat; 15-3, rotating rod knob; 15-4, single-head hanging plate; 15-5, steering handle; 16, gripper cylinder; 17, adapter block; 18, lifting base plate; 19, lifting cylinder; 20, lifting guide rail; 21, side device; 22-1, front device; 22-2. Detailed Implementation

[0018] The present invention will be further described and illustrated below with reference to the accompanying drawings and specific embodiments. The technical features of each embodiment of the present invention can be combined accordingly, provided that there is no mutual conflict.

[0019] like Figure 2-3As shown, the side-position device 22-1 and the front-position device 22-2 are commonly used heat shrinking devices for online heat shrinking production lines on the market. The wire harness body 2 is fixed to the tooling plate 1 in a specific way. Multiple tooling plates 1 are arranged on a circular track assembly line, staying at different stations for a certain period of time to ensure the operator completes the process requirements. The wire harness body 2 mainly includes a conventional wire harness branch 2-1, a long single-ended wire harness branch 2-2, and a short single-ended wire harness branch 2-3. In actual use, the operator grasps the conventional wire harness branch 2-1, the long single-ended wire harness branch 2-2, or the short single-ended wire harness branch 2-3, adjusts the heat shrink tubing to the appropriate position (covering the solder joint or exposed copper point), and then pushes the wire harness in, triggering the heat shrinking process, with the opening of the heating chamber of the side-position device 22-1 or the front-position device 22-2 as the reference. In this situation, due to the influence of equipment size and wire harness length, the operator needs to disassemble the wire harness on tooling plate 1 to increase the wire harness length for heat shrinking, or squat down and bend over to trigger the heat shrinking program, which is very inconvenient to use.

[0020] Therefore, the existing equipment has the following technical problems: 1) Manual heat shrinking cannot control the heat shrinking time, resulting in inconsistent glue dispensing from the heat shrink tubing, and rework can damage the wire harness. 2) Manually handling the wire harness to the heat shrink area will increase the number of steps, and the wire harness may be damaged during the wire collection and sorting process, which will affect work efficiency (most wire harnesses are complex types with branches). 3) Existing heat shrink equipment on the market is a modified version of the original model. It is large in size and occupies a lot of area in front of the tooling plate, affecting the operating space. 4) Existing heat shrink equipment on the market is large in size and has a special branch line for heat shrinking, requiring frequent adjustments of the equipment to the appropriate area for heat shrinking; 5) There is a certain conflict between the orientation of the heating chamber and the way the operator lays out the wires.

[0021] The device provided by this utility model effectively solves the above-mentioned technical problems. The specific structure of the device is as follows: like Figure 1The diagram shows a wire harness heat shrinking device suitable for tooling plate assembly line operations, and its layout within the assembly line. To minimize equipment size and facilitate heat shrinking operations, this invention incorporates the following design. The wire harness heat shrinking device mainly includes an online heat shrink machine 4 mounted on a mobile platform 3 and an electrical control cabinet 5. The mobile platform 3 is positioned at a specific location on the assembly line, typically on one side of the tooling plate 1 used to fix the wire harness body 2. The mobile platform 3 can move vertically, horizontally, and vertically. The electrical control cabinet 5 is electrically connected to the online heat shrink machine 4. The electrical control cabinet 5 is separate from the online heat shrink machine 4: this separate design minimizes the size of the heat shrink head. Smaller equipment provides greater operational space and ease of use for operators. Furthermore, the separate electrical control cabinet 5 can be placed in any location according to the actual production line layout, eliminating the need for additional electrical and pneumatic connections.

[0022] In a preferred embodiment of this utility model, the online heat shrink machine 4 is fixed to the mobile platform 3 by a support arm 6 (the support arm can be designed to fit the customer's production scenario according to the actual application). The electrical control cabinet 5 can be directly fixed to the mobile platform 3. The mobile platform 3 is slidably connected to a vertically arranged guide shaft, and the bottom of the guide shaft is slidably connected to a horizontal bottom guide rail. In actual use, the mobile platform 3 can move left and right along the bottom guide rail, and the online heat shrink machine 4 and the electrical control cabinet 5 can move up and down along the guide shaft following the mobile platform 3.

[0023] In this invention, the online heat shrink machine 4 can rotate arbitrarily within a certain angle in the horizontal direction to adapt to the heat shrinking of wire harnesses in different scenarios.

[0024] As a preferred embodiment of this utility model, such as Figure 4 As shown, a raised steering handle 16 is provided on the outer side wall of the outer casing. The bottom of the online heat shrink machine 4 is equipped with a rotating mechanism, such as... Figure 12 As shown, the online heat shrink machine 4 can be rotated horizontally by a certain angle around the connection point with the support arm 6 via the steering handle 16, changing the direction of the heating chamber 13 to accommodate the wire harness to be heat-shrinked. The rotating mechanism can be steplessly adjusted and stopped within the rotation angle range.

[0025] In the device of this utility model, such as Figure 4-7 As shown, the online heat shrink machine 4 includes a housing, a heating chamber 13, a single-head fixture 15, a gripper assembly, and a gripper lifting mechanism. The heating chamber 13, which can be opened and closed via a chamber opening and closing cylinder 13-6, is located within the inner cavity of the housing. The opening of the heating chamber 13 faces upwards. This upward-facing design of the heating chamber 13 in the online heat shrink machine 4 is very user-friendly for operators when feeding and shrinking wires and when removing them after shrinking.

[0026] In a preferred embodiment of this utility model, unlike conventional equipment, the heating chamber 13 is fixed: as shown below. Figure 6As shown, the heating chamber 13 includes two semi-circular heating elements 13-1. When closed, the two semi-circular heating elements 13-1 form a ring structure in the middle for placing the wire harness to be heated and shrunk. The lower part of each semi-circular heating element 13-1 is fixed to the cavity fixing block 13-5 via a cavity adapter plate 13-4. The cavity fixing block 13-5 is fixed to the cavity opening and closing cylinder 13-6, which controls the opening and closing operation of the semi-circular heating element 13-1.

[0027] As a preferred embodiment of this utility model, to ensure that the heating cavity 13 has good heat preservation, heat dissipation and protection, the entire heating cavity 13 adopts a three-layer protective design: such as Figure 6 As shown, the outer shell includes a mounting base plate 7, a mounting top plate 8, and a middle partition plate, which together form a relatively enclosed internal environment. The two semi-circular heating elements 13-1 inside the inner cavity are fixed with an insulation shell for heat preservation. The second layer consists of a left protective cover 13-2 and a right protective cover 13-3, which serve both heat preservation and thermal insulation functions. The outermost layer is a cavity heat insulation cover 13-7, further protecting the heating cavity 13. A cavity cooling fan 13-8 is located at the corresponding position in front of the heating cavity 13. A ventilation opening is opened at the top of the cavity heat insulation cover 13-7. Gaps exist between the left protective cover 13-2, the right protective cover 13-3, and the cavity heat insulation cover 13-7, forming a ventilation channel (as shown by the arrow path in the diagram). After the cavity cooling fan 13-8 is activated, ambient temperature air will be drawn in through the opening of the cavity heat shield 13-7, ensuring that the heat dissipated from the semi-circular heating cavity 13-1 is carried by the ambient temperature air along the ventilation channel, carrying away the heat dissipated from the heating cavity, and then flowing out from the air outlet of the cavity cooling fan 13-8, ensuring that the temperature of the cavity heat shield 13-7 is always within a safe range, and ensuring a safe and comfortable operating environment.

[0028] In the device of this utility model, such as Figure 5 As shown, a gripper assembly is installed on the top of the outer casing above the heating chamber 13, and a gripper lifting mechanism is provided at the bottom of the gripper assembly. The wire harness to be heat-shrinked, held by the gripper assembly, can enter the heating chamber 13 for heat shrinking or leave the heating chamber 13 after heat shrinking is completed, driven by the gripper lifting mechanism.

[0029] In a preferred embodiment of this utility model, the grippers are designed to be movable: the left gripper 9 and the right gripper 10 are respectively connected to gripper cylinders 17 for controlling opening and closing. The opening and closing of the left gripper 9 and the right gripper 10 can be achieved by controlling the two gripper cylinders 17 through the left start button 11 and the right start button 12 respectively. The gripper lifting mechanism includes a lifting cylinder 20, a lifting base plate 19, and a lifting guide rail 21. The two gripper cylinders 17 are respectively fixed on the lifting base plate 19 through adapter blocks 18. The lifting cylinder 20 drives the lifting base plate 19 to move up and down along the lifting guide rail 21 (the driving method includes, but is not limited to, cylinder + guide rail, motor + pulley belt, motor + gear rack, etc.) to drive the wire harness to be heat-shrinked into the heating chamber 13 for heat shrinking.

[0030] In the device of this utility model, such as Figure 7 As shown, an integrated quick-change single-ended fixture 15 is provided on the outer wall of the outer casing. The single-ended fixture 15 mainly includes an adapter rod 15-1, a rotating rod 15-2, a rotating rod guide seat 15-3, a rotating rod knob 15-4, and a single-ended cable hanging plate 15-5. The rotating rod 15-2 is vertically arranged and fixed to the outer wall of the outer casing through the rotating rod guide seat 15-3. The rotating rod 15-2 can rotate and move up and down within the rotating rod guide seat 15-3. The top of the rotating rod 15-2 is fixed to a horizontally arranged adapter rod 15-1 through a detachable rotating rod knob 15-4. The extension length of the adapter rod 15-1 can be changed through the rotating rod knob 15-4. The adapter rod 15-1 can be clamped and fixed by a gripper assembly. One end of the adapter rod 15-1 is fixed to the rotating rod 15-2 through the rotating rod knob 15-4, and the other end is provided with a single-ended cable hanging plate 15-5. The single-ended cable holder 15-5 is used to support the single-ended wire harness and position the heat shrink tubing. The rotating knob 15-4 can be tightened or loosened according to actual usage, while simultaneously moving the adapter rod 15-1 to accommodate heat shrink tubing of different lengths. The rotating rod 15-2 passes through the guide hole on the rotating rod guide seat 15-3 and can move freely up and down along the guide hole. When switching to heat shrink tubing for the long single-ended wire harness branch 2-2 or the short single-ended wire harness branch 2-3, the adapter rod 15-1 needs to be pulled out and inserted into the slot of the left-side clamp 9. Then, the left-side start button 11 should be pressed, and the clamp will... Figure 13 Clamp the adapter rod 15-1 in the direction indicated by the arrow, and then perform heat shrinking of the single-ended wire harness branch.

[0031] As a preferred embodiment of this utility model, such as Figure 4 As shown, a cooling nozzle 14 is provided on the upper side of the heating chamber 13. The cooling nozzle 14 can spray compressed air to cool the heat shrink tube after heat shrinking.

[0032] Based on the above-mentioned wire harness heat shrinking equipment, the specific method of this utility model in actual use is as follows: like Figure 8-10 As shown, according to Figure 8Adjust the moving platform 3 in the direction indicated by the arrows (up, down, left, right) to position the online heat shrink machine 4 appropriately. The operator then takes the standard wire harness branch 2-1 and adjusts the heat shrink tubing to the desired position. Figure 9 Insert the clamp into the slots on the left jaw 9 and right jaw 10 in the direction shown by the arrows. Press the left start button 11 and the right start button 12. The clamp cylinder 17 drives the clamps to clamp the conventional wire harness branch 2-1 in the direction shown by the arrows. Then, press the left start button 11 and the right start button 12 simultaneously to start the heat shrinking program. After the heat shrinking program starts, the cavity opening and closing cylinder 13-6 drives the semi-circular heating element 13-1 to open, and the lifting cylinder 20 moves, driving the left jaw 9 and the right jaw 10 and the conventional wire harness branch 2-1 on them to... Figure 10 The tube enters the heating chamber 13 in the direction indicated by the arrow. Once in position, the heating chamber 13 closes to heat shrink the heat shrink tube. After heat shrinking, the lifting cylinder 20 drives the gripper to move the wire harness branch upwards to position. The cooling nozzle 14 sprays compressed air to cool the heat shrink tube. Then, the left gripper 9 and the right gripper 10 release, and the heat shrinking is complete.

[0033] like Figure 11-14 As shown, according to Figure 11 Adjust the moving platform 3 up, down, left, and right in the direction indicated by the arrows to position the online heat shrink machine 4 appropriately. Figure 12 As shown, the bottom of the online heat shrink machine 4 has a rotating structure that can stop at any angle within a certain range. Hold the steering handle 16 and rotate it in the direction shown in the diagram. After rotating through a certain angle (e.g., 90° as shown in the diagram), the machine is fixed and requires no further operation. Adjust the single-ended fixture 15 (the left and right sides can be interchanged according to actual use) to switch to single-ended wire harness heat shrinking. The operator takes the short single-ended wire harness branch 2-3, puts on the single-ended heat shrink tubing, and follows... Figure 13 The arrow indicates that the short single-ended wire harness branch 2-3 is positioned on the single-ended hanging plate 15-5 of the single-ended fixture 15, and simultaneously placed in the slot of the right-side clamp 10. Press the right-side start button 12 to clamp the short single-ended wire harness branch 2-3 in the direction of the arrow shown in the diagram. After the short single-ended wire harness branch 2-3 is clamped by the right-side clamp 10, press the left-side start button 9 and the right-side start button 10 simultaneously to start the heat shrinking process. Figure 14 As shown, after the heat shrinking process is started, the cavity opening and closing cylinder 13-6 drives the semi-circular heating cavity 13-1 to open, the lifting cylinder 20 moves, and drives the left gripper 9 and the right gripper 10 and the short single-ended wire harness branch 2-3 on them to enter the heating cavity 13 in the direction of the arrow shown in the figure. After they are in place, the heating cavity 13 closes and heat shrinks the heat shrink tube. After the heat shrinking is completed, the lifting cylinder 20 drives the gripper to move the wire harness branch upward into place, the cooling nozzle 14 sprays compressed air to cool the heat shrink tube, and then the right gripper 10 is released, and the heat shrinking is completed.

[0034] For branch 2-2 of the long single-ended wire harness, since its wire harness length is sufficient, Figure 12 Both of the device forms shown can be heat-shrinkable. The specific method can be determined according to the actual use. The heat-shrinking process is the same as that of the single-ended wire harness branch 2-3 above, and will not be repeated here.

[0035] Unlike conventional equipment, which is large in size, requires frequent adjustments, and is cumbersome to operate manually, this utility model is not only small in size and does not require frequent adjustments, but also simple to operate. It also includes a rotating mechanism at the bottom of the equipment that can rotate freely within a certain angle, which can adapt to heat shrinking of wire harness branches of different shapes, as well as a single-ended fixture for heat shrinking of single-ended wire harness tubes.

[0036] The embodiments described above are merely preferred solutions of this utility model, and are not intended to limit the scope of this utility model. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this utility model. Therefore, all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this utility model.

Claims

1. A wire harness heat shrinking device suitable for tooling plate assembly line operations, characterized in that, It includes an online heat shrink machine (4) and an electrical control cabinet (5) installed on a mobile platform (3), with the electrical control cabinet (5) electrically connected to the online heat shrink machine (4); the mobile platform (3) is located on one side of the tooling plate (1) used to fix the wire harness body (2), and can move up, down, left, and right; the online heat shrink machine (4) can rotate in the horizontal direction to adapt to different scenarios of wire harnesses to be heat-shrinked; The online heat shrink machine (4) includes an outer shell, a heating chamber (13), a single-head fixture (15), a gripper assembly, and a gripper lifting mechanism; the inner cavity of the outer shell is provided with a heating chamber (13) that can be opened and closed by a cavity opening and closing cylinder (13-6), and the opening of the heating chamber (13) faces upward; a gripper assembly is installed on the top of the outer shell above the heating chamber (13), and a gripper lifting mechanism is provided at the bottom of the gripper assembly; The wire harness to be heat-shrinked, held by the gripper assembly, can enter the heating chamber (13) under the drive of the gripper lifting mechanism to achieve heat shrinking or leave the heating chamber (13) after heat shrinking; a single-ended fixture (15) is provided on the outer wall of the outer shell, the single-ended fixture (15) includes an adapter rod (15-1), a rotating rod (15-2), a rotating rod guide seat (15-3), a rotating rod knob (15-4), and a single-ended wire hanging plate (15-5); the rotating rod (15-2) is vertically arranged and fixed by the rotating rod guide seat (15-3). Fixed on the outer wall of the outer casing, the rotating rod (15-2) can rotate and move up and down within the rotating rod guide seat (15-3); the top of the rotating rod (15-2) is fixed with a horizontally arranged adapter rod (15-1) through a detachable rotating rod knob (15-4), and the extension length of the adapter rod (15-1) can be changed through the rotating rod knob (15-4); the adapter rod (15-1) can be clamped and fixed by the gripper assembly, and one end of it is provided with an single-ended hanging plate (15-5) for supporting the single-ended wire harness and positioning the heat shrink tubing.

2. The wire harness heat shrinking equipment suitable for tooling plate assembly line operation according to claim 1, characterized in that, The mobile platform (3) is slidably connected to a vertically set guide shaft, and the bottom of the guide shaft is slidably connected to a horizontal bottom guide rail, so as to drive the online heat shrink machine (4) to move in the vertical and horizontal directions.

3. The wire harness heat shrinking equipment suitable for tooling plate assembly line operation according to claim 1, characterized in that, The bottom of the online heat shrink machine (4) is fixed to the mobile platform (3) by the support arm (6), and a protruding steering handle (16) is provided on the outer side wall of the outer shell; the bottom of the online heat shrink machine (4) is provided with a rotating mechanism, which can make the online heat shrink machine (4) rotate horizontally around the connection point with the support arm (6) through the steering handle (16), changing the direction of the heating cavity (13) to adapt to different scenarios of heat shrinking wire harnesses.

4. A wire harness heat shrinking device suitable for tooling plate assembly line operation according to claim 3, characterized in that, The rotating mechanism can be steplessly adjusted and stopped within the rotation angle range.

5. A wire harness heat shrinking device suitable for tooling plate assembly line operation according to claim 1, characterized in that, The heating chamber (13) includes two semi-circular heating elements (13-1). When closed, the two semi-circular heating elements (13-1) can form an annular structure in the middle for placing the wire harness to be heated. The lower part of each semi-circular heating element (13-1) is fixed to the cavity fixing block (13-5) through the cavity adapter plate (13-4). The cavity fixing block (13-5) is fixed to the cavity opening and closing cylinder (13-6). The opening and closing operation of the semi-circular heating element (13-1) can be controlled by the cavity opening and closing cylinder (13-6).

6. A wire harness heat shrinking device suitable for tooling plate assembly line operation according to claim 5, characterized in that, The outer shell includes a mounting base plate (7), a mounting top plate (8), and a middle surrounding plate, which together form a relatively closed inner cavity; the two semi-circular heating elements (13-1) in the inner cavity are provided with heat-insulating shells on their outer sides for heat preservation, and the outer sides of the heat-insulating shells are provided with a left protective cover (13-2) and a right protective cover (13-3) for heat insulation of the heating cavity, and the outer sides of the left protective cover (13-2) and the right protective cover (13-3) of the heating cavity are provided with a cavity heat insulation cover (13-7); A ventilation opening is provided on the top of the cavity heat shield (13-7). There is a gap between the left protective cover (13-2) and the right protective cover (13-3) of the heating cavity and the cavity heat shield (13-7), forming a ventilation channel. A cavity cooling fan (13-8) is provided on one side of the ventilation channel. Through the suction of the cavity cooling fan (13-8), the external air can carry away the heat dissipated from the heating cavity through the ventilation opening and ventilation channel, and then be discharged from the cavity cooling fan (13-8).

7. A wire harness heat shrinking device suitable for tooling plate assembly line operation according to claim 1, characterized in that, The gripper assembly includes a left gripper (9) and a right gripper (10), and the left gripper (9) and the right gripper (10) are respectively connected to gripper cylinders (17) for controlling opening and closing; the two gripper cylinders (17) can be controlled by the left start button (11) and the right start button (12) to realize the opening and closing of the left gripper (9) and the right gripper (10).

8. A wire harness heat shrinking device suitable for tooling plate assembly line operation according to claim 7, characterized in that, The gripper lifting mechanism includes a lifting cylinder (20), a lifting base plate (19), and a lifting guide rail (21); two gripper cylinders (17) are fixed on the lifting base plate (19) by a transition block (18); the lifting cylinder (20) drives the lifting base plate (19) to move up and down along the lifting guide rail (21) so as to drive the wire harness to be heat-shrinked into the heating chamber (13) for heat shrinking.

9. A wire harness heat shrinking device suitable for tooling plate assembly line operation according to claim 1, characterized in that, A cooling nozzle (14) is provided on the upper side of the heating chamber (13). The cooling nozzle (14) can spray compressed air to cool the heat shrink tube after the heat shrink is completed.

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