Efficient and uniform heating device for forming wire harness heat shrink tube

Abstract

The utility model discloses a high-efficiency uniform heating device for forming a wire harness heat shrink tube, which comprises a bottom plate, a driving motor, a screw rod, a guide rail, an object placing table, a heater bracket, a heater, a wire puller bracket and a wire puller, one end of the screw rod is connected with a rotating shaft of the driving motor, the other end of the screw rod is connected with the bottom plate through a bearing, the guide rail is arranged on the bottom plate, and the object placing table is arranged on the guide rail. The heater support and the wire puller support are respectively installed on the guide rails and can move, the heater support is provided with a transverse screw hole, the lead screw penetrates through the screw hole and is in threaded connection with the screw hole, the wire puller support is provided with a transverse through hole, the lead screw penetrates through the through hole, the heater is installed on the heater support, and the wire puller is installed on the wire puller support. According to the utility model, the heat shrink tube outside the wire harness can be uniformly heated in a semi-automatic manner, the wire harness and the heat shrink tube cannot be bent in the heat shrink process, the heat shrink quality and the heat shrink efficiency are improved, the surface of the heat shrink tube cannot be wrinkled, and the appearance quality is improved.

Description

Technical Field

[0001] The utility model relates to a heating device for forming a wire harness heat shrink tube, in particular to a high-efficiency and uniform heating device for forming a wire harness heat shrink tube. Background Art

[0002] In some hardware control systems, there's a certain transmission distance between each sensing device and the control system, and signal transmission is typically achieved via cables. For a system, these cables are numerous, complex, and easily damaged. Once a cable damage causes a fault, troubleshooting becomes significantly more difficult. To facilitate management and protect cable transmission safety, the wires of individual components or subsystems are typically bundled together to form a wiring harness, and a protective sleeve is applied over the harness. Heat shrink tubing is a commonly used protective sleeve. Heat shrink tubing is commonly made from polyolefin polymers and is characterized by its initial large cross-section. When heated, the cross-section decreases due to changes in the molecular state of the material. In practice, the wiring harness is first threaded through the tubing, then heated to a specific temperature and maintained for a certain period to complete the heat shrink molding process.

[0003] There are generally two traditional methods for forming heat shrink tubing for wiring harnesses: manual heat shrinking and automatic heat shrinking. Manual heat shrinking typically uses a heating device such as a hot air gun. During the shrinking process, both the heat shrink tubing and the wiring harness inside must be straightened manually. The tubing is then heated with a hot air gun, gradually heating the tubing from the base to the end. This method has the following drawbacks: It is significantly influenced by operator experience and can easily lead to uncontrollable stress on the tubing. Excessive stress on the tubing can easily cause it to deform, while too little stress can easily cause the wiring harness to bend. Secondly, when the hot air gun is heated, the windward side of the tubing receives more heat, while the leeward side receives less heat. This results in uneven heating in all directions, which can easily lead to heat shrinkage and bending of the wiring harness. In severe cases, a dead bend can form in the wiring harness. Once the dead bend is formed, the wiring harness is subjected to uneven stress in all directions under repeated temperature shock conditions, which can easily lead to breakage, resulting in poor system contact. Furthermore, this type of troubleshooting is difficult and costly.

[0004] Automatic heat shrinking typically involves placing the heat-shrink tubing-encased wiring harness and associated products in an oven. The oven's optimal temperature allows for natural shrinkage, without the application of external forces. This method has the following drawbacks: the heat shrink tubing and wiring harness are in a free state, and the stress release in each direction of the tubing and wiring harness is uncontrolled during the shrinking process. This can easily lead to bending of the wiring harness, a high risk of lead breakage, and poor appearance quality. The heat shrink tubing is heated unevenly, and the stress release in the tubing and wiring harness is uncontrolled, resulting in wrinkles on the tubing's surface. Utility Model Content

[0005] The purpose of the utility model is to provide a semi-automatic, efficient and uniform heating device for forming wire harness heat shrink tubing in order to solve the above problems.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0007] A high-efficiency and uniform heating device for forming wire harness heat shrink tubes comprises a base plate, a drive motor, a screw rod, a guide rail, a storage table, a heater bracket, a heater, a wire puller bracket and a wire puller. One end of the horizontal screw rod is connected to the rotating shaft of the drive motor installed on the base plate. The storage table is arranged on the base plate and close to the drive motor. The other end of the screw rod is connected to the base plate through a bearing. The guide rail which is horizontal and parallel to the screw rod is installed on the base plate. The heater bracket and the wire puller bracket are respectively installed on the guide rail and can move. The heater bracket is located between the drive motor and the wire puller bracket. The heater bracket is provided with a horizontal screw hole and the screw rod passes through the screw hole and is threadedly connected. The wire puller bracket is provided with a horizontal through hole and the screw rod passes through the through hole. The heater is installed on the heater bracket and is located above the screw rod. The wire puller is installed on the wire puller bracket and is located above the screw rod.

[0008] Preferably, in order to achieve a more uniform heating effect, the heater is a "U"-shaped heater or an "O"-shaped heater with a built-in electric heating tube or electric heating wire.

[0009] Preferably, in order to achieve a stable and reliable guiding function, the guide rail is a guide rod, and the two ends of the heater bracket and the two ends of the wire puller bracket are respectively mounted on two parallel guide rods through their own through holes, and the two guide rods are respectively located on both sides of the screw rod.

[0010] Preferably, in order to facilitate locking and positioning of the wire puller bracket, bracket screw holes are respectively provided at both ends of the wire puller bracket, and two bracket positioning screws with operating handles are respectively installed in the two bracket screw holes and can tighten the corresponding guide rods.

[0011] Preferably, in order to facilitate the positioning of the wire harness and the locking position of the wire puller, an hourglass-shaped annular groove is provided on the outer wall of the middle circumference of the wire puller, and wire puller screw holes are respectively provided at both ends of the wire puller. Two wire puller positioning screws with operating handles are respectively passed through the corresponding through slots on the wire puller bracket and connected to the two wire puller screw holes.

[0012] Preferably, in order to facilitate quick positioning of the product, a vertical baffle is provided on the side of the storage table close to the heater bracket, the top of the baffle is higher than the top of the storage table, and a "U"-shaped groove with an open upper end is provided in the middle of the top of the baffle.

[0013] Preferably, in order to facilitate assembly, the base plate includes a first base plate and a second base plate, the two ends of the guide rail are respectively connected to the first base plate and the second base plate, the drive motor and the storage table are respectively installed on the first base plate, and the screw rod is connected to the second base plate through the bearing.

[0014] The beneficial effects of the present invention are:

[0015] The utility model is designed with a driving motor, a screw rod, a guide rail, a storage table, a heater bracket, a heater, a wire puller bracket and a wire puller that cooperate with each other. When in use, the wire harness of the product can be tightened by the wire puller, and the heater bracket and the heater are driven by the driving motor to move at a uniform speed, so that the heat shrink tube outside the wire harness is semi-automatically and evenly heated. During the heat shrinking process, the wire harness and the heat shrink tube will not bend, thereby improving the heat shrinking quality and efficiency. No wrinkles will appear on the surface of the heat shrink tube, thereby improving the appearance quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the efficient and uniform heating device for forming heat shrink tubing for wiring harnesses according to the present invention;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the application of the efficient and uniform heating device for forming wire harness heat shrink tubes described in the utility model. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the accompanying drawings:

[0019] like Figure 1 As shown, the efficient and uniform heating device for forming heat shrink tubes for wire harnesses of the present invention includes a base plate (refer to the first base plate 2 and the second base plate 15 below), a drive motor 1, a screw rod 8, a guide rail (refer to the guide rod 9 below), a storage table 3, a heater bracket 6, a heater 7, a wire puller bracket 13 and a wire puller 10. One end of the horizontal screw rod 8 is connected to the rotating shaft of the drive motor 1 installed on the base plate. The storage table 3 is arranged on the base plate and close to the drive motor 1. The other end of the screw rod 8 is connected to the base plate through a bearing (not marked in the figure) The guide rail which is horizontal and parallel to the screw rod 8 is installed on the base plate, the heater bracket 6 and the wire puller bracket 13 are respectively installed on the guide rail and can move, the heater bracket 6 is located between the drive motor 1 and the wire puller bracket 13, the heater bracket 6 is provided with a horizontal screw hole and the screw rod 8 passes through the screw hole and is threadedly connected, the wire puller bracket 13 is provided with a horizontal through hole and the screw rod 8 passes through the through hole, the heater 7 is installed on the heater bracket 6 and is located above the screw rod 8, and the wire puller 10 is installed on the wire puller bracket 13 and is located above the screw rod 8.

[0020] like Figure 1 As shown, the present invention also discloses the following multiple more optimized specific structures:

[0021] In order to achieve a more uniform heating effect, the heater 7 is a "U"-shaped heater 7 (or an "O"-shaped heater) with a built-in electric heating tube or electric heating wire.

[0022] In order to achieve a stable and reliable guiding function, the guide rail is a guide rod 9. The two ends of the heater bracket 6 and the two ends of the wire puller bracket 13 are respectively mounted on two parallel guide rods 9 through their own through holes. The two guide rods 9 are respectively located on both sides of the screw rod 8.

[0023] In order to facilitate locking and positioning of the wire puller bracket 13, bracket screw holes are respectively provided at both ends of the wire puller bracket 13, and two bracket positioning screws 14 with operating handles are respectively installed in the two bracket screw holes and can press against the corresponding guide rods 9.

[0024] In order to facilitate the wiring harness (refer to Figure 2 The wiring harness 18) is positioned and the wire puller 10 is locked in position. An hourglass-shaped annular groove 11 is provided on the outer wall of the middle circumference of the wire puller 10. Wire puller screw holes are provided at both ends of the wire puller 10. Two wire puller positioning screws 12 with operating handles pass through the corresponding through slots on the wire puller bracket 13 and are connected to the two wire puller screw holes.

[0025] In order to facilitate the rapid Figure 2 In order to position the product 16), a vertical baffle 4 is provided on the side of the storage table 3 close to the heater bracket 6, the upper surface of the baffle 4 is higher than the upper surface of the storage table 3, and a "U"-shaped groove 5 with an upper end opening is provided in the middle of the upper surface of the baffle 4.

[0026] To facilitate assembly, the base plate includes a first base plate 2 and a second base plate 15. The two ends of the guide rail are respectively connected to the first base plate 2 and the second base plate 15. The drive motor 1 and the storage table 2 are respectively installed on the first base plate 2. The screw rod 8 is connected to the second base plate 15 through the bearing.

[0027] Combine Figure 1 and Figure 2When in use, place the product 16 on the storage table 3, put the heat shrink tube 17 on the wiring harness 18 of the product 16 first, and then pass the end of the wiring harness 18 through the through hole of the heater 7 and connect it to the annular groove 11 of the wire puller 10, tighten the wiring harness 18 by moving the wire puller bracket 13 or rotating the wire puller 10, and then tighten the bracket positioning screw 14 to lock the wire puller bracket 13, and tighten the wire puller positioning screw 12 to lock the wire puller 10. At this time, the wiring harness 18 is in a tensioned state and the heat shrink tube 17 is in an extended state; then start the drive motor 1, first move the heater bracket 6 to the outside of one end of the heat shrink tube 17, and then turn on the heater 7. After heating, a high-temperature area with a relatively constant temperature is formed, and then control the heater bracket 6 to move at a uniform speed so that the high-temperature area passes through the heat shrink tube 17 at a uniform speed, so that the heat shrink tube 17 can achieve high-quality heat shrink molding function until the entire heat shrink tube 17 is completed.

[0028] The above embodiments are only preferred embodiments of the present invention and are not limitations on the technical solutions of the present invention. Any technical solution that can be implemented on the basis of the above embodiments without creative work should be deemed to fall within the scope of protection of the patent of the present invention.

Claims

1. An efficient and uniform heating device for forming heat shrink tubing for wiring harnesses, comprising a bottom plate, characterized in that: It also includes a driving motor, a screw rod, a guide rail, a storage table, a heater bracket, a heater, a wire puller bracket and a wire puller. One end of the horizontal screw rod is connected to the rotating shaft of the driving motor installed on the base plate. The storage table is arranged on the base plate and close to the driving motor. The other end of the screw rod is connected to the base plate through a bearing. The guide rail that is horizontal and parallel to the screw rod is installed on the base plate. The heater bracket and the wire puller bracket are respectively installed on the guide rail and can move. The heater bracket is located between the driving motor and the wire puller bracket. The heater bracket is provided with a horizontal screw hole and the screw rod passes through the screw hole and is threadedly connected. The wire puller bracket is provided with a horizontal through hole and the screw rod passes through the through hole. The heater is installed on the heater bracket and is located above the screw rod. The wire puller is installed on the wire puller bracket and is located above the screw rod.

2. The high-efficiency and uniform heating device for forming heat shrink tubing for wiring harnesses according to claim 1, characterized in that: The heater is a "U"-shaped heater or an "O"-shaped heater with a built-in electric heating tube or electric heating wire.

3. The high-efficiency and uniform heating device for forming heat shrink tubing for wiring harnesses according to claim 1 or 2, characterized in that: The guide rail is a guide rod, and both ends of the heater bracket and the wire puller bracket are respectively sleeved on two parallel guide rods through their own through holes, and the two guide rods are respectively located on both sides of the screw rod.

4. The high-efficiency and uniform heating device for forming heat shrink tubing for wiring harnesses according to claim 3, characterized in that: Both ends of the wire puller bracket are respectively provided with bracket screw holes, and two bracket positioning screws with operating handles are respectively installed in the two bracket screw holes and can press against the corresponding guide rods.

5. The high-efficiency and uniform heating device for forming heat shrink tubing for wiring harnesses according to claim 1 or 2, characterized in that: An hourglass-shaped annular groove is provided on the outer wall of the middle circumference of the wire puller, and wire puller screw holes are respectively provided at both ends of the wire puller. Two wire puller positioning screws with operating handles respectively pass through the corresponding through slots on the wire puller bracket and are connected to the two wire puller screw holes.

6. The high-efficiency and uniform heating device for forming heat shrink tubing for wiring harnesses according to claim 1 or 2, characterized in that: A vertical baffle is provided on one side of the storage table close to the heater bracket, the upper surface of the baffle is higher than the upper surface of the storage table, and a "U"-shaped groove with an open upper end is provided in the middle of the upper surface of the baffle.

7. The high-efficiency and uniform heating device for forming heat shrink tubing for wiring harnesses according to claim 1 or 2, characterized in that: The base plate includes a first base plate and a second base plate, the two ends of the guide rail are respectively connected to the first base plate and the second base plate, the drive motor and the storage table are respectively installed on the first base plate, and the screw rod is connected to the second base plate through the bearing.

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