Power distribution cabinet copper bar heat shrink tube leveling and trimming device

Abstract

The invention relates to the technical field of copper bar processing, in particular to a power distribution cabinet copper bar heat shrink tube flush trimming device which comprises a frame, an opening is formed in one side of the frame, a containing groove is formed in the position, corresponding to the opening, of the frame, a swing arm is arranged on one side of the opening, a winding mechanism is arranged on the other side of the opening, and an electric heating wire is tensioned at the opening. One end of the heating wire is fixed to one end of the swing arm, the other end of the heating wire is wound in the winding mechanism, and the two ends of the heating wire are connected with a heating power source. A copper bar needing to cut a heat shrink tube is close to the electric heating wire at the opening, winding of the electric heating wire on the cut heat shrink tube is achieved through cooperation of the swing arm and the winding mechanism, the heat shrink tube can be cut by heating the electric heating wire, operation is easy, and the copper bar is not damaged.

Description

Technical Field

[0001] This invention relates to the field of copper busbar processing technology, and in particular to a device for flush trimming the heat shrink tubing of copper busbars in electrical distribution cabinets. Background Technology

[0002] Copper busbars are arranged inside the switch cabinet, and heat shrink sleeves are often wrapped around them. Usually, the heat shrink sleeves shrink and deform at the cut after heating, which affects the appearance. Workers need to use a utility knife to cut off the deformed heat shrink sleeves. However, manual cutting can easily scratch the surface of the copper busbars, which not only affects the quality of the copper busbars but also damages the surface coating. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a flush trimming device for heat shrink tubing of copper busbars in power distribution cabinets, which uses a heating wire to thermally cut the heat shrink tubing, thus solving the problem of scratching the surface of the copper busbars by manual cutting.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a flush trimming device for copper busbar heat shrink tubing of a power distribution cabinet, comprising a frame, an opening on one side of the frame, a receiving groove at a position corresponding to the opening, a swing arm on one side of the opening, a winding mechanism on the other side of the opening, a heating wire tensioned at the opening, one end of the heating wire being fixed to one end of the swing arm, the other end of the heating wire being wound in the winding mechanism, and both ends of the heating wire being connected to a heating power source.

[0005] To further optimize this technical solution, one end of the swing arm is rotatably connected in the frame, a tension spring is provided between the swing arm and the frame, and a mounting hole is provided at the end of the swing arm away from the tension spring. One end of the heating wire is fixed in the mounting hole, and the heating wire is pulled tight at the opening by the elastic potential energy of the tension spring.

[0006] To further optimize this technical solution, the winding mechanism includes a bobbin and a guide wheel. The guide wheel is located on one side of the opening. The heating wire wound in the bobbin passes around the guide wheel and connects to the swing arm. One side of the guide wheel has a rolling contact with a pressure wheel. The pressure wheel is rotatably connected to one end of a hinge rod. The other end of the hinge rod is rotatably connected to the frame. A pressure adjustment mechanism is provided on the side of the hinge rod away from the guide wheel.

[0007] To further optimize this technical solution, the pressure adjustment mechanism includes a columnar spring and an adjusting screw. The adjusting screw is threaded into the positioning column, which is fixed to the frame. The columnar spring is pressed against the adjusting screw and the hinge rod.

[0008] To further optimize this technical solution, a rotary motor is connected to one axial end of the guide wheel, and the rotary motor and the guide wheel can be driven by a belt or a gear.

[0009] To further optimize this technical solution, a limiting shaft is provided at the position corresponding to the frame and the spool. The spool is coaxially sleeved on the outside of the limiting shaft, and a spiral spring is provided between the limiting shaft and the spool.

[0010] To further optimize this technical solution, a bottom surface is provided on one side of the receiving groove, and multiple rollers with protruding edges are embedded in the bottom surface. The multiple rollers are tangent to the same horizontal line, and the height of the top edge of the guide wheel from the bottom surface is greater than the distance of the top edge of the roller from the bottom surface.

[0011] To further optimize this technical solution, the roller is made of insulated ceramic material, while the guide wheel, hinge rod, and pressure wheel are made of conductive metal material. The heating power supply is connected to the heating wire in sequence through the hinge rod, pressure wheel, and guide wheel.

[0012] To further optimize this technical solution, a limit bolt is threadedly connected to the side of the receiving groove away from the opening. An inclined pressure rod is hinged to the upper side of the receiving groove. One top end of the pressure rod is hinged to one side of the frame, and one bottom end of the pressure rod is rotatably connected to a pressure roller. A bent V-shaped spring is provided on the side of the pressure rod away from the roller. One end of the V-shaped spring is engaged in the limit block, and the other end abuts against the upper side of the pressure rod.

[0013] To further optimize this technical solution, the middle part of the swing arm is provided with an arc-shaped bend, and the end of the arc-shaped bend is provided with a mounting hole. The heating wire is fixed in the mounting hole. A limit switch is provided in the rotation path of the swing arm. The limit switch is located on one side of the receiving groove. The limit switch is electrically connected between the heating power supply and the heating wire to control the heating timing of the heating wire.

[0014] Compared with the prior art, the present invention has the following advantages: 1. The heating wire near the opening of the copper busbar to be cut is wound around the heat shrink tubing by the cooperation of the swing arm and the winding mechanism. Heating the heating wire can cut the heat shrink tubing. The operation is simple and does not damage the copper busbar; 2. The copper busbar is limited by the limiting bolt, pressure roller and roller to prevent the copper busbar from tilting up and ensure reliable and accurate cutting position; 3. Due to the existence of the arc bend of the swing arm, the heating wire can be pulled to the lower side of the copper busbar. At the same time, since the top edge of the guide wheel is higher than the bottom plane of the copper busbar, the heating wire can be wound around the copper busbar completely, ensuring that the heat shrink tubing is completely cut. Attached Figure Description

[0015] Figure 1 A schematic diagram of a heat shrink tubing flush trimming device for copper busbars in a power distribution cabinet; Figure 2 A front view of a device for flush trimming copper busbar heat shrink tubing in a power distribution cabinet; Figure 3 A rear view of a device for flush trimming copper busbar heat shrink tubing in a power distribution cabinet; Figure 4This is a schematic diagram of the use of a heat shrink tubing trimming device for copper busbars in a power distribution cabinet.

[0016] In the diagram: 1. Frame; 10. Receiving groove; 100. Bottom surface; 101. Roller; 102. Pressure rod; 103. Pressure roller; 104. V-shaped spring; 11. Opening; 13. Limiting shaft; 14. Limiting block; 2. Swing arm; 20. Arc bend; 201. Mounting hole; 21. Tension spring; 22. Pressure handle; 3. Winding mechanism; 31. Bollard; 32. Guide wheel; 34. Positioning post; 4. Heating wire; 5. Pressure roller; 51. Hinge rod; 511. Column spring; 512. Adjusting screw; 6. Rotary motor; 60. Transition gear; 61. Drive gear; 7. Limit switch; 8. Limit bolt; 9. Copper busbar. Detailed Implementation

[0017] 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 and specific embodiments. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0018] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. Terms such as “up,” “down,” “left,” and “right” are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0019] Combination Figures 1 to 3 As shown, a flush trimming device for heat shrink tubing of a power distribution cabinet includes a frame 1, an opening 11 on one side of the frame 1, a receiving groove 10 at the position corresponding to the opening 11, and a limit bolt 8 threadedly connected to the side of the receiving groove 10 away from the opening 11.

[0020] A swing arm 2 is provided on one side of the upper part of the opening 11, and a winding mechanism 3 is provided on the other side of the opening 11. A tensioned heating wire 4 is provided at the opening 11. One end of the heating wire 4 is fixed to one end of the swing arm 2, and the other end of the heating wire 4 is wound in the winding mechanism 3. Both ends of the heating wire 4 are connected to a heating power source.

[0021] More specifically, one end of the swing arm 2 is rotatably connected within the frame 1. A tension spring 21 is provided between the swing arm 2 and the frame 1. In this embodiment, the tension spring 21 is a spiral spring. The middle part of the swing arm 2 has a downward-curving arc 20, and the end of the arc 20 has a mounting hole 201. The mounting hole 201 is located at the end of the swing arm 2 away from the tension spring 21. A metal bolt is threaded into the mounting hole 201. One end of the heating wire 4 is fixed in the mounting hole 201 by the metal bolt. The elastic potential energy of the tension spring 21 pulls the heating wire 4 taut at the opening 11. One end of the heating wire 4 and the positive end of the heating power supply are both fixed in the mounting hole 201 by the metal bolt.

[0022] A limit switch 7 is provided in the rotation path of the swing arm 2. The limit switch 7 is located on one side of the receiving groove 10. The limit switch 7 is electrically connected between the heating power supply and the heating wire 4 and is used to control the heating timing of the heating wire 4.

[0023] The winding mechanism 3 includes a bobbin 31 and a guide wheel 32. A limiting shaft 13 is provided at the position corresponding to the bobbin 31 on the frame 1. The bobbin 31 is coaxially sleeved on the outside of the limiting shaft 13, and a spiral spring is provided between the limiting shaft 13 and the bobbin 31. When the heating wire 4 is not stretched, it is wound in the bobbin 31. The spiral spring here realizes the tensioning and winding of the heating wire 4 after it is pulled out.

[0024] A guide wheel 32 is positioned on one side of the opening 11. The heating wire 4, wound in the spool 31, passes around the guide wheel 32 and connects to the swing arm 2. A pressure wheel 5 rolls in contact with one side of the guide wheel 32. The pressure wheel 5 is rotatably connected to one end of a hinge rod 51, and the other end of the hinge rod 51 is rotatably connected to the frame 1. A pressure adjustment mechanism is located on the side of the hinge rod 51 away from the guide wheel 32. The pressure adjustment mechanism includes a columnar spring 511 and an adjusting screw 512. The adjusting screw 512 is threaded into a positioning post 34, which is fixed to the frame 1. The columnar spring 511 is pressed against the adjusting screw 512 and the hinge rod 51. The guide wheel 32, hinge rod 51, and pressure wheel 5 are made of conductive metal. The negative terminal of the heating power supply is connected to the heating wire 4 sequentially through the hinge rod 51, pressure wheel 5, and guide wheel 32. This pressure adjustment mechanism not only presses the heating wire 4 into the guide wheel 32 but also connects the heating wire 4 to the heating power supply.

[0025] A rotary motor 6 is connected to one axial end of the guide wheel 32. The rotary motor 6 and the guide wheel 32 can be driven by belt or gear. In this embodiment, the rotary motor 6 is set inside the frame 1. The output shaft of the rotary motor 6 is provided with a drive gear 61. The gear transmission of power is realized by the intermediate gear 60 meshing with the drive gear 61 and the gear shaft in the guide wheel 32 respectively.

[0026] The receiving groove 10 has a bottom surface 100 on one side, and multiple rollers 101 with protruding edges are embedded in the bottom surface 100. The rollers 101 are made of insulating ceramic material. The multiple rollers 101 are tangent to the same horizontal line b. The top tangent a that is tangent to the guide wheel 32 is parallel to the horizontal line b. The height of the top edge of the guide wheel 32 from the bottom surface 100 is greater than the distance of the top edge of the rollers 101 from the bottom surface 100. That is, the horizontal line b is set between the top tangent a and the bottom surface 100. A pressure rod 102 is hinged to the upper side of the receiving groove 10 and is inclined to the side of the limiting bolt 8. The top end of the pressure rod 102 is hinged to one side of the frame 1, and the bottom end of the pressure rod 102 is rotatably connected to a pressure wheel 103. A curved V-shaped spring 104 is provided on the side of the pressure rod 102 away from the rollers 101. One end of the V-shaped spring 104 is engaged in the limiting block 14, and the other end abuts against the upper side of the pressure rod 102. The pressure roller 103 is kept in a downward pressing state by the V-shaped spring 104.

[0027] In use, hold frame 1 or fix frame 1 in the workbench. Initially, heating wire 4 is tensioned at opening 11. Place the copper busbar 9, from which the heat shrink tubing needs to be cut, close to opening 11. The heat shrink tubing material can be PVC or non-crosslinked polyolefin (such as EVA), or PET. Align the heat shrink tubing cutting position with heating wire 4, and then... Figure 4As shown, the copper busbar 9 continues to drive the heating wire 4 towards the side of the limiting bolt 8. At this time, the left side of the copper busbar 9 first contacts the heating wire 4 until the side of the copper busbar 9 contacts the limiting bolt 8. Since the pressure roller 103 rolls and contacts the upper surface of the copper busbar 9, the copper busbar 9 can be pressed tightly against the upper side of the roller 101 to prevent the copper busbar 9 from tilting up. The pulling of the copper busbar 9 and the guide wheel 32 on the heating wire 4 achieves the contact between the bottom surface of the copper busbar 9 and the heating wire 4. At this point, continue pressing down the handle 22, so that the swing arm 2 contacts the limit switch 7. At the same time, the upper surface and right side of the copper busbar 9 come into contact with the heating wire 4. At this time, the limit switch 7 controls the heating power supply to form a heating circuit with the heating wire 4 between the guide wheel 32 and the mounting hole 201. The heat shrink tubing is cut off by high temperature. In order to achieve a better cutting effect, the limit switch 7 can start the rotary motor 6 at the same time to further tighten the heating wire 4 while controlling the heating. During the process, the rotary motor 6 drives the guide wheel 32 to rotate. To increase the friction, the heating wire 4 can be wound around the guide wheel 32 once. The heating wire 4 can be pulled back and tightened to the side of the spool 31. Due to the existence of the arc bend 20, the heating wire 4 at one end of the mounting hole 201 is pulled to the lower side of the copper busbar 9. Since the top edge of the guide wheel 32 is higher than the bottom plane of the copper busbar 9, the heating wire 4 can be wound around the copper busbar 9 completely once to ensure that the heat shrink tubing is completely cut off. After releasing the pressure on handle 22, the heating wire 4 loses power. The control rotary motor 6 then delays power-off for a certain period of time, allowing the copper busbar 9 to be pulled out. The heating wire 4 is then tensioned to its initial state by the tension spring 21, the rotary motor 6, and the spool 31. Finally, excess and useless heat shrink tubing can be easily removed, ensuring a clean cut without damaging the copper busbar 9.

[0028] Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

Claims

1. A device for flush trimming copper busbar heat shrink tubing in a power distribution cabinet, comprising a frame (1), characterized in that: The frame (1) has an opening (11) on one side, and a receiving groove (10) is provided on the frame (1) corresponding to the opening (11). A swing arm (2) is provided on one side of the opening (11), and a winding mechanism (3) is provided on the other side of the opening (11). A heating wire (4) is tensioned at the opening (11). One end of the heating wire (4) is fixed to one end of the swing arm (2), and the other end of the heating wire (4) is wound in the winding mechanism (3). Both ends of the heating wire (4) are connected to a heating power source.

2. The device for flush trimming copper busbar heat shrink tubing in a distribution cabinet according to claim 1, characterized in that: One end of the swing arm (2) is rotatably connected in the frame (1). A tension spring (21) is provided between the swing arm (2) and the frame (1). A mounting hole (201) is provided at the end of the swing arm (2) away from the tension spring (21). One end of the heating wire (4) is fixed in the mounting hole (201). The heating wire (4) is pulled tight at the opening (11) by the elastic potential energy of the tension spring (21).

3. The device for flush trimming copper busbar heat shrink tubing in a distribution cabinet according to claim 1, characterized in that: The winding mechanism (3) includes a bobbin (31) and a guide wheel (32). The guide wheel (32) is located on one side of the opening (11). The heating wire (4) wound in the bobbin (31) passes around the guide wheel (32) and is connected to the swing arm (2). A pressure wheel (5) is rollingly contacted on one side of the guide wheel (32). The pressure wheel (5) is rotatably connected to one end of the hinge rod (51). The other end of the hinge rod (51) is rotatably connected to the frame (1). A pressure adjustment mechanism is provided on the side of the hinge rod (51) away from the guide wheel (32).

4. The device for flush trimming copper busbar heat shrink tubing in a power distribution cabinet according to claim 3, characterized in that: The pressure regulating mechanism includes a columnar spring (511) and an adjusting screw (512). The adjusting screw (512) is threaded into a positioning post (34). The positioning post (34) is fixed to the frame (1). The columnar spring (511) is pressed against the adjusting screw (512) and the hinge rod (51).

5. The device for flush trimming copper busbar heat shrink tubing in a distribution cabinet according to claim 3, characterized in that: One axial end of the guide wheel (32) is connected to a rotary motor (6), and the rotary motor (6) and the guide wheel (32) can be driven by a belt or a gear.

6. The device for flush trimming copper busbar heat shrink tubing in a distribution cabinet according to claim 3, characterized in that: The frame (1) is provided with a limiting shaft (13) at the position corresponding to the spool (31). The spool (31) is coaxially sleeved on the outside of the limiting shaft (13). A spiral spring is provided between the limiting shaft (13) and the spool (31).

7. The device for flush trimming copper busbar heat shrink tubing in a distribution cabinet according to claim 3, characterized in that: The receiving groove (10) has a bottom surface (100) on one side. Multiple rollers (101) with protruding edges are embedded in the bottom surface (100). The multiple rollers (101) are tangent to the same horizontal line. The height of the top edge of the guide wheel (32) from the bottom surface (100) is greater than the distance of the top edge of the roller (101) from the bottom surface (100).

8. The device for flush trimming copper busbar heat shrink tubing in a distribution cabinet according to claim 7, characterized in that: The roller (101) is made of insulating ceramic material, and the guide wheel (32), the hinge rod (51) and the pressing wheel (5) are made of conductive metal material. The heating power supply is connected to the heating wire (4) in sequence through the hinge rod (51), the pressing wheel (5) and the guide wheel (32).

9. A device for flush trimming copper busbar heat shrink tubing in a distribution cabinet according to claim 7, characterized in that: The receiving groove (10) is threaded with a limiting bolt (8) on the side away from the opening (11). An inclined pressure rod (102) is hinged to the upper side of the receiving groove (10). The top end of the pressure rod (102) is hinged to one side of the frame (1). The bottom end of the pressure rod (102) is rotatably connected to a pressure roller (103). A bent V-shaped spring (104) is provided on the side of the pressure rod (102) away from the roller (101). One end of the V-shaped spring (104) is engaged in the limiting block (14), and the other end abuts against the upper side of the pressure rod (102).

10. The device for flush trimming copper busbar heat shrink tubing in a distribution cabinet according to claim 1, characterized in that: The swing arm (2) has an arc-shaped bend (20) in the middle and an installation hole (201) at the end of the arc-shaped bend (20). The heating wire (4) is fixed in the installation hole (201). A limit switch (7) is provided in the rotation path of the swing arm (2). The limit switch (7) is located on one side of the receiving groove (10). The limit switch (7) is electrically connected between the heating power supply and the heating wire (4) to control the heating timing of the heating wire (4).

Images