Busbar heat shrink tube cutting machine and cutting unit thereof

Abstract

The application discloses a bus heat shrink tube cutting machine and a cutting unit thereof, a top of a cutting platform is fixed with an upper support, a bottom of the cutting platform is fixed with a lower support and a longitudinal support, the upper support is slidably provided with an upper transverse rolling cutting device, the lower support is slidably provided with a lower transverse rolling cutting device, the longitudinal support is slidably provided with a longitudinal rolling cutting device, cutting knives of the upper and lower transverse rolling cutting devices are arranged in a first slot of the cutting platform, the cutting knives of the longitudinal rolling cutting device are arranged in a second slot of the cutting platform during cutting, the first slot extends along a width direction of the bus, the second slot extends along a length direction of the bus, and the rolling cutting devices are further respectively provided with heating devices. The application can cut the heat shrink tube in the width and length directions, facilitate peeling of the heat shrink tube, and further cut the heat shrink tube by using high-temperature knives, so that the cutting efficiency and the production efficiency are improved, damage of the bus caused by repeated cutting is avoided, and the product quality of the bus is ensured.

Description

[0001] This invention claims priority to Chinese invention patent application “Intelligent busbar heat shrink tubing cutting equipment and cutting process thereof”, priority number CN202210765488.1, priority date June 30, 2022. Technical Field

[0002] This invention relates to the field of heat shrink tubing cutting equipment, and in particular to a device for cutting the end of a heat shrink tubing sleeved on a busbar or the overlap between the busbar and other conductors. Background Technology

[0003] The function of a busbar is to collect, distribute, and transmit electrical energy. In a power supply system, the connections of distribution equipment at various voltage levels mostly use bare conductors or stranded wires with rectangular or circular cross-sections, collectively referred to as busbars. Copper or aluminum busbars are widely used in busbars. To provide insulation protection for busbars and prevent occasional short-circuit accidents, heat-shrink tubing needs to be installed on the busbars. The heat-shrink tubing is made of a special polyolefin material. Furthermore, to accommodate the installation requirements of the busbars, the ends of the heat-shrink tubing or the overlaps between the busbar and other conductors need to be cut.

[0004] Manual cutting is simple and convenient, but it is highly unpredictable and has the following main problems: First, operators cannot accurately control the cutting depth, which can easily result in cutting too shallowly and causing the heat shrink tubing to fail to detach, or cutting too deep and damaging the copper busbar; Second, the wall of the high-pressure heat shrink tubing is relatively hard after shrinking, requiring operators to cut repeatedly, which is very inefficient and can easily injure their hands; Third, manual cutting cannot guarantee the consistency of the cut shape, which can easily result in burrs on the edges or uneven cut lines.

[0005] To address the aforementioned issues, Chinese utility model patent CN215318871U discloses a heat shrink tubing cutting machine, which automates the cutting of heat shrink tubing, solving the problems of burrs or uneven cuts that easily occur with manual cutting, and effectively reducing labor intensity. However, the following problems still exist:

[0006] First, the high-pressure heat shrink tubing on the busbar is very thick and hard after shrinking, requiring repeated cutting by mechanical cutters, which affects cutting efficiency and can easily damage the busbar, affecting the quality of the finished product. Second, mechanical cutters can only cut the heat shrink tubing in the width direction, requiring the operator to use the cutter to make a secondary cut along the length of the busbar to peel off the removed tubing, thus slowing down the cutting efficiency. Third, mechanical cutting equipment can only clamp the busbar at one point, resulting in poor clamping effect and making it easy to cut the heat shrink tubing unevenly. Summary of the Invention

[0007] In view of this, the present invention provides a busbar heat shrink tubing cutting machine and its cutting unit to improve the cutting efficiency and quality of heat shrink tubing and effectively reduce labor intensity.

[0008] To solve the above technical problems, the technical solution adopted by the present invention is: a busbar heat shrink tubing cutting unit, comprising: a cutting platform, the cutting platform having a first slot and a second slot, the first slot extending along the width direction of the busbar, the second slot extending along the length direction of the busbar, and the second slot communicating with the first slot; an upper support fixed to the top of the cutting platform, an upper transverse rolling cutting device slidably mounted on the upper support, the upper transverse rolling cutting device being drivenly connected to an upper transverse sliding drive mechanism, the moving direction of the upper transverse rolling cutting device being consistent with the extension direction of the first slot, and the cutting blade of the upper transverse rolling cutting device being disposed in the first slot. Inside; a lower support is fixed to the bottom of the cutting platform, and a lower transverse rolling cutting device is slidably mounted on the lower support. The lower transverse rolling cutting device is driven by a lower transverse sliding drive mechanism. The moving direction of the lower transverse rolling cutting device is consistent with the extension direction of the first slot. The cutting tool of the lower transverse rolling cutting device is located in the first slot. A longitudinal support is fixed to the bottom of the cutting platform, and a longitudinal rolling cutting device is slidably mounted on the longitudinal support. The longitudinal rolling cutting device is driven by a longitudinal sliding drive mechanism. The moving direction of the longitudinal rolling cutting device is consistent with the extension direction of the second slot. The cutting tool of the longitudinal rolling cutting device is located in the second slot.

[0009] Preferably, the upper transverse rolling cutting device includes: a first knife holder, a first knife support, and a first cutter. The upper end of the first knife support is hinged to the first knife holder. A torsion spring is installed between each side wall of the first knife support and the first knife holder. The lower end of the first knife support is rotatably mounted with the first cutter via a first rotating shaft. The lower transverse rolling cutting device includes: a second knife holder, a second knife support, and a second cutter. The lower end of the second knife support is hinged to the second knife holder. A torsion spring is installed between each side wall of the second knife support and the second knife holder. The upper end of the second knife support is rotatably mounted with the second cutter via a second rotating shaft. The longitudinal rolling cutting device includes: a third knife holder, a third knife support, and a third cutter. The middle part of the third knife support is hinged to the third knife holder. The upper end of the third knife support is rotatably mounted with the third cutter via a third rotating shaft. A power-driven knife-lifting mechanism is provided between the third knife support and the third knife holder.

[0010] Preferably, the power lifting mechanism includes an ejector cylinder or electric push rod connected between the lower end of the third tool holder and the third tool post.

[0011] As an improvement, the upper transverse rolling cutting device is provided with a first heating device for increasing the temperature of its cutting tool, the lower transverse rolling cutting device is provided with a second heating device for increasing the temperature of its cutting tool, and the longitudinal rolling cutting device is provided with a third heating device for increasing the temperature of its cutting tool.

[0012] Preferably, the first heating device includes a first electric heating rod, which heats the first rotating shaft and conducts heat to the first cutting tool through the first rotating shaft; the second heating device includes a second electric heating rod, which heats the second rotating shaft and conducts heat to the second cutting tool through the second rotating shaft; the third heating device includes a third electric heating rod, which heats the third rotating shaft and conducts heat to the third cutting tool through the third rotating shaft.

[0013] Preferably, the first tool holder includes a first tool holder body and a first heating rod bracket fixedly connected together. The first tool holder body is hinged to the first tool post, and the first rotating shaft is rotatably connected to the first tool holder body. The first rotating shaft has a first central hole, and the first electric heating rod is fixed to the first heating rod bracket and extends into the first central hole, with a gap between the first electric heating rod and the inner wall of the first central hole. The second tool holder includes a second tool holder body and a second heating rod bracket fixedly connected together. The second tool holder body is hinged to the second tool post, and the second rotating shaft is rotatably connected to the second tool holder body. The second rotating shaft is provided with a second central hole, and the second electric heating rod is fixed to the second heating rod bracket and extends into the second central hole, with a gap between the second electric heating rod and the inner wall of the second central hole; the third tool holder includes a third tool holder body and a third heating rod bracket fixedly connected together, the third tool holder body is hinged to the third tool holder, the third rotating shaft is rotatably connected to the third tool holder body, the third rotating shaft is provided with a third central hole, and the third electric heating rod is fixed to the third heating rod bracket and extends into the third central hole, with a gap between the third electric heating rod and the inner wall of the third central hole.

[0014] Preferably, the first central hole is a through hole, the first cutting tool is attached to and fixed to the outer end face of the first rotating shaft, and the first cutting tool closes the first central hole; the second central hole is a through hole, the second cutting tool is attached to and fixed to the outer end face of the second rotating shaft, and the second cutting tool closes the second central hole; the third central hole is a through hole, the third cutting tool is attached to and fixed to the outer end face of the third rotating shaft, and the third cutting tool closes the third central hole.

[0015] Preferably, the first rotating shaft is provided with a head, the cross-sectional area of ​​which is significantly larger than that of other parts of the corresponding rotating shaft, and the first tool is fastened to the outer end face of the head by fasteners. The structure of the second rotating shaft and the third rotating shaft is the same as that of the first rotating shaft.

[0016] Preferably, the first tool holder body and the first heating rod support, the second tool holder body and the second heating rod support, and the third tool holder body and the third heating rod support are all provided with heat dissipation holes.

[0017] As with the same concept, the present invention uses the above-mentioned busbar heat shrink tubing cutting unit in a busbar heat shrink tubing cutting machine.

[0018] After adopting the above technical solution, the beneficial effects of the present invention are:

[0019] (1) Because an upper support is fixed at the top of the cutting platform, and a lower support and a longitudinal support are fixed at the bottom of the cutting platform, an upper transverse rolling cutting device is slidably installed on the upper support, a lower transverse rolling cutting device is slidably installed on the lower support, and a longitudinal rolling cutting device is slidably installed on the longitudinal support. The moving directions of the upper and lower transverse rolling cutting devices are consistent with the extension direction of the first slot of the cutting platform, and the moving direction of the longitudinal rolling cutting device is consistent with the extension direction of the second slot of the cutting platform. The first slot extends along the width direction of the generatrix, and the second slot extends along the length direction of the generatrix. The cutting direction of the upper and lower transverse rolling cutting devices... The cutting tool is positioned in the first slot. During cutting, the cutting tool of the longitudinal rolling cutting device is located in the second slot. Thus, the present invention can not only achieve automated cutting of heat shrink tubing in the width direction through the upper and lower transverse rolling cutting devices, but also achieve automated cutting of heat shrink tubing in the length direction through the longitudinal rolling cutting device. The cut in the length direction (i.e., the longitudinal cut) can destroy the annular structure of the cut heat shrink tubing, eliminating the need for manual secondary cutting of the heat shrink tubing with a tool. This facilitates the peeling of the heat shrink tubing, improves cutting efficiency and quality, and reduces labor costs.

[0020] (2) Because a power-driven blade-lifting mechanism is installed in the longitudinal rolling cutter, when it is necessary to cut the heat shrink tubing in the length direction, the third blade is raised by the power-driven blade-lifting mechanism (blade lifting), so that the third blade presses on the heat shrink tubing at the corresponding position, and then cuts the heat shrink tubing as the blade moves; when it is not necessary to cut the heat shrink tubing in the length direction, the third blade is lowered by the power-driven blade-lifting mechanism (blade lowering), so that the third blade is away from the heat shrink tubing located at the bottom of the busbar, avoiding accidental damage to the heat shrink tubing by the third blade. It can not only cut "T" shaped cuts (one transverse cut and one longitudinal cut), but also cut "H" shaped cuts (two transverse cuts and one longitudinal cut) on the heat shrink tubing, enhancing the adaptability to the cutting patterns of the busbar heat shrink tubing.

[0021] (3) Since a heating device for increasing the temperature of the cutting tool is provided in the rolling cutting device, the heating device includes an electric heating rod, which is used to heat the rotating shaft and conduct heat to the cutting tool through the rotating shaft. The cutting tool at high temperature becomes a hot knife, which provides good process conditions for cutting heat shrink tubing. It can complete the cutting of heat shrink tubing in one go without repeated cutting, thereby improving the cutting efficiency of heat shrink tubing and the production efficiency of busbar. At the same time, it avoids damage to the busbar due to repeated cutting and ensures the finished product quality of the busbar.

[0022] (4) In the hot knife device, the rotating shaft is provided with a central hole, the electric heating rod is fixed to the heating rod bracket and extends into the central hole, and there is a gap between the electric heating rod and the inner wall of the central hole. When the rotating shaft rotates, it will not wear the electric heating rod, and the heat generated by the electric heating rod will heat the rotating shaft in the form of thermal radiation. The knife is fixed to the outer end face of the knife by fasteners. Therefore, the rotating shaft can transfer heat to the knife by conduction, so that the temperature rises rapidly and becomes a "hot knife". The structure is simple and practical.

[0023] (5) The cutting platform is equipped with a front clamping mechanism for clamping the front part of the busbar and a rear clamping mechanism for clamping the rear part of the busbar, which improves the reliability of clamping the busbar.

[0024] In summary, the busbar heat shrink tubing cutting machine and its cutting unit disclosed in this invention adopt a heated, automated, and intelligent cutting process. An electric heating rod heats the cutting tool, allowing for rapid cutting of the heat shrink tubing. Compared to existing mechanical cutting equipment, the high-temperature hot blade can complete the cutting of the heat shrink tubing in one pass, eliminating the need for repeated cutting. This improves the cutting efficiency and production efficiency of the heat shrink tubing, while also preventing damage to the busbar caused by repeated cutting, thus ensuring the quality of the finished busbar. Furthermore, this invention can achieve automated cutting of the heat shrink tubing in both the width and length directions. The length cut can destroy and remove the annular structure of the tubing, eliminating the need for secondary cutting by manual tools, facilitating the peeling of the heat shrink tubing. One person can complete the cutting operation, saving labor costs. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the busbar heat shrink tubing cutting machine of the present invention;

[0026] Figure 2 for Figure 1 A schematic diagram of the cutting unit in Embodiment 1 is shown;

[0027] Figure 3 for Figure 2 Top view;

[0028] Figure 4 for Figure 2 A bottom view;

[0029] Figure 5 for Figure 2 Front view;

[0030] Figure 6 for Figure 2 Rear view;

[0031] Figure 7 for Figure 2 The left view;

[0032] Figure 8 This is a schematic diagram of the longitudinal rolling cutting device in Embodiment 1 of the present invention;

[0033] Figure 9 for Figure 8 Top view;

[0034] Figure 10 This is a schematic diagram of the cutting unit in Embodiment 2 of the busbar heat shrink tubing cutting machine of the present invention;

[0035] Figure 11 yes Figure 10 A schematic diagram of the structure where the cutting unit is located below the cutting platform;

[0036] Figure 12 This is a schematic diagram of the transverse rolling cutting device in Embodiment 2;

[0037] Figure 13 yes Figure 12 A cross-sectional view of the first tool's rotation center along a longitudinal section;

[0038] Figure 14 This is a schematic diagram of the transverse rolling cutting device from another angle in Embodiment 2;

[0039] Figure 15 This is a schematic diagram of the longitudinal rolling cutting device in Embodiment 2;

[0040] Figure 16 yes Figure 15 A sectional view of the section through the longitudinal section of the third tool's rotation center;

[0041] Wherein: 1a, housing; 2a, cutting platform; 3a, upper support; 4, busbar; 5a, first tool holder; 6a, first tool holder; 7a, first rotating shaft; 8a, first cutting tool; 9a, first electric heating rod; 10a, laser positioner; 11a, protective cover; 12a, lower support; 13a, second tool holder; 14a, second tool holder; 15a, second rotating shaft; 16a, second cutting tool; 17a, second electric heating rod; 18a, longitudinal support; 19a, third tool holder; 20a, third tool holder; 21a, third rotating shaft; 22a, third cutting tool; 23a, third electric heating rod. ; 24a, First slot; 25a, Second slot; 26a, Lifting plate; 27a, First clamping cylinder; 28a, Pressure plate; 29a, Clamping arm; 30a, Second clamping cylinder; 31a, Slide rail; 32a, Movable block; 33a, First movable baffle; 34a, Second movable baffle; 35a, Second slide rail; 36a, Limiting groove; 37a, Locking handle; 38a, Torsion spring; 39a, First lead screw; 40a, First motor; 41a, Second lead screw; 42a, Second motor; 43a, Fixed bracket; 44a, Cable drag chain; 45a, Ejection cylinder;

[0042] 2b. Cutting platform; 3b. Upper support; 5b. First tool holder; 51b. First tool holder body; 52b. First slider; 6b. First tool holder; 61b. First tool holder body; 62b. First heating rod support; 63b. Vent hole; 64b. Vent hole; 65b. Bearing; 66b. Through hole; 67b. Fastener; 68b. Hinge shaft; 69b. Bearing; 7b. First rotating shaft; 71b. Nut; 8b. First cutting tool; 9b. First electric heating rod; 10b. Laser positioner; 12b. Lower support; 13b. Second tool holder; 131b. Second tool holder body; 132b. Second slider; 14b. Second tool holder; 16b. Second cutting tool; 18b. Longitudinal support; 19b. Three tool holders; 191b, third tool holder body; 192b, third slider; 20b, third tool holder; 201b, third tool holder body; 202b, third heating rod bracket; 203b, heat dissipation hole; 204b, heat dissipation hole; 205b, nut; 206b, bearing; 207b, fastener; 21b, third rotating shaft; 22b, third cutting tool; 23b, third electric heating rod; 24b, first slot; 25b, second slot; 27b, first clamping cylinder; 28b, pressure plate; 29b, clamping arm; 30, second clamping cylinder b; 38b, torsion spring; 39b, first lead screw; 40b, first motor; 41b, second lead screw; 42b, second motor; 45b, ejection cylinder. Detailed Implementation

[0043] Example 1

[0044] For ease of understanding, let's make the following conventions: Busbar 4 (see...) Figure 1 The width direction of the generatrix 4 is denoted as the transverse direction, and the length direction of the generatrix 4 is denoted as the longitudinal direction. In the following description, terms such as first, second, third, etc., will be used, for example, first tool holder, second tool holder, third tool holder, etc., which are only for the convenience of distinguishing tool holders in different parts, and are essentially all tool holders; when the term "tool holder" is used in other parts without other restrictions, the term "tool holder" here should be understood to cover the common attributes of the first tool holder, second tool holder and third tool holder.

[0045] Figures 1-9 A busbar heat shrink tubing cutting machine is shown, with a cutting platform 2a mounted on top of the housing 1a. (See attached image.) Figure 2 As shown, an upper support 3a is fixed to the top of the cutting platform 2a, and the upper support 3a is along the generatrix 4 (see Figure 4). Figure 1 Extending along the width direction, the upper support 3a has a first blade holder 5a slidably mounted on it. The first blade holder 5a slides along the length direction of the upper support 3a. A first blade seat 6a is mounted on the first blade holder 5a. A first blade 8a is mounted on the lower end of the first blade seat 6a via a first rotating shaft 7a. The first blade 8a is preferably a disc blade for rolling cuts on the heat shrink tubing. The first blade seat 6a is equipped with a first electric heating rod 9a that can heat the first rotating shaft 7a. The function of the first rotating shaft 7a is to quickly transfer the heat generated by the first electric heating rod 9a to the first blade 8a.

[0046] like Figure 2 As shown, a laser positioner 10a is installed on the top of the upper bracket 3a, and the laser positioner 10a is positioned facing the cutting platform 2a. When the laser positioner 10a shines in the direction of the cutting platform 2a, it can emit a cross-shaped positioning beam. The cross-shaped positioning beam is used to position the busbar, making it easy for the operator to quickly place the busbar according to the indication of the cross-shaped positioning beam.

[0047] like Figure 1 and Figure 2 As shown, a protective cover 11a is provided on the outside of the upper support 3a. The protective cover 11a and the housing 1a are used to protect the cutting equipment and prevent injury to personnel during the operation of the cutting equipment.

[0048] like Figures 4-6 As shown, a lower support 12a is fixed to the bottom of the cutting platform 2a, and the lower support 12a is along the generatrix 4 (see Figure 12a). Figure 1The first tool holder 5a and the second tool holder 13a are extended in the width direction. A second tool holder 13a is slidably mounted on the lower support 12a. The second tool holder 13a slides along the length direction of the lower support 12a. The first tool holder 5a and the second tool holder 13a are connected to a transverse sliding drive mechanism. A second tool holder 14a is mounted on the second tool holder 13a. A second tool 16a is mounted on the upper end of the second tool holder 14a via a second rotating shaft 15a. The second tool 16a is preferably a disc blade for rolling cuts on heat shrink tubing. The second tool holder 14a is provided with a second electric heating rod 17a that can heat the second rotating shaft 15a. The function of the second rotating shaft 15a is to quickly transfer the heat generated by the second electric heating rod 17a to the second tool 16a.

[0049] like Figures 7-9 As shown, a longitudinal support 18a is provided on one side of the lower support 12a, extending along the length of the generatrix 4. A third tool holder 19a is slidably mounted on the longitudinal support 18a, sliding along the length of the longitudinal support 18a. The third tool holder 19a is connected to a longitudinal sliding drive mechanism, and a third tool seat 20a is mounted on the third tool holder 19a. The third tool seat 20a is connected to a power lifting mechanism, which drives the third tool seat 20a to rotate (lift or lower the tool). The power lifting mechanism includes an ejector cylinder 45a, the cylinder body of which is mounted on the third tool holder 19a, and the piston rod of which is connected to the lower end of the third tool seat 20a. A third cutter 22a is mounted on the upper end of the third tool seat 20a via a third rotating shaft 21a. The third cutter 22a is preferably a disc blade for rolling cuts on heat shrink tubing. The third tool holder 20a is provided with a third electric heating rod 23a that can heat the third rotating shaft 21a. Similarly, the function of the third rotating shaft 21a is to quickly transfer the heat generated by the third electric heating rod 23a to the third tool 22a.

[0050] like Figure 2 , Figure 3 and Figure 7 As shown, a clamping mechanism for clamping the busbar 4 is also installed on the cutting platform 2a. The clamping mechanism includes a front clamping part and a rear clamping part. The front clamping part includes a lifting plate 26a that is vertically slidably mounted on the upper bracket 3a. The lifting plate 26a is connected to a first clamping cylinder 27a, and a pressure plate 28 for clamping the busbar 4 is fixed to the bottom of the lifting plate 26a. The rear clamping part includes a clamping arm 29a for clamping the busbar 4. One end of the clamping arm 29a is located above the second slot 25a, and the other end of the clamping arm 29a is connected to a second clamping cylinder 30a. The cylinder body of the second clamping cylinder 30a is fixed on the cutting platform 2a. The front clamping part and the rear clamping part realize the separate clamping of both ends of the busbar 4, thereby improving the reliability of clamping the busbar 4.

[0051] like Figures 1-3 As shown, the cutting platform 2a has a first slot 24a and a second slot 25a that are perpendicular to each other, and the second slot 25a is connected to the first slot 24a. The first slot 24a extends along the width direction of the generatrix 4 and is located between the upper support 3a and the longitudinal support 18a. The first cutter 8a and the second cutter 16a are both located in the first slot 24a. The second slot 25a extends along the length direction of the generatrix 4 and is located on one side of the longitudinal support 18a. The third cutter 22a is located in the second slot 25a.

[0052] like Figures 1-3 As shown, a slide rail 31a is provided on one side of the second slot 25a. The slide rail 31a extends along the length of the second slot 25a and has a first groove. A movable block 32a is slidably installed in the first groove. A first movable baffle 33a is installed on the movable block 32a and extends along the width of the second slot 25a. In this embodiment, the movable block 32a can be locked at any position within the first groove. A second movable baffle 34a is provided below the upper support 3a. The second movable baffle 34a is slidably installed on the top of the cutting platform 2a. The second movable baffle 34a is provided with a second sliding groove 35a, which extends along the length of the second slot 25a. The inner wall of the second sliding groove 35a is provided with a plurality of limiting grooves 36a, which are arranged sequentially along the length of the second slot 25a. A vertically arranged locking handle 37a is fixed on the cutting platform 2a. The locking handle 37a passes through the second movable baffle 34a through the second sliding groove 35a and the limiting grooves 36a. The position of the second movable baffle 34a can be adjusted and limited by the locking handle 37a and the limiting grooves 36a.

[0053] Before cutting, the operator adjusts the positions of the first movable baffle 33a and the second movable baffle 34a in advance according to the specifications and cutting requirements of the busbar. When cutting the first cutting position of the heat shrink tubing, one end of the busbar is placed against the first movable baffle 33a. When cutting the second cutting position of the heat shrink tubing, the other end of the busbar is placed against the second movable baffle 34a. This ensures that the busbar at both positions is perpendicular to the first and second cutters, avoiding the situation where the cutting surface of the heat shrink tubing is tilted due to the tilt of the busbar. This ensures that the line shape of the heat shrink tubing cutting position is straight, thereby ensuring the quality of the finished busbar.

[0054] like Figure 2 , Figure 5 and Figure 8As shown, the upper end of the first tool holder 6a is hinged to the first tool post 5a, the lower end of the second tool holder 14a is hinged to the second tool post 13a, a torsion spring 38a is installed between the two side walls of the first tool holder 6a and the first tool post 5a, and between the two side walls of the second tool holder 14a and the second tool post 13a, and the middle part of the third tool holder 20a is hinged to the third tool post 19a.

[0055] like Figure 2 , Figure 5 and Figure 6 As shown, the transverse sliding drive mechanism includes two horizontally arranged first lead screws 39a, each extending along the length of the upper bracket 3a. One first lead screw 39a is rotatably mounted on the upper bracket 3a, and the other first lead screw 39a is rotatably mounted on the lower bracket 12a. Each first lead screw 39a is connected to a first motor 40a. The first tool post 5a and the second tool post 13a are both threadedly mounted on their respective first lead screws 39a. (See attached diagram.) Figure 2 According to conventional techniques in the art, the first tool holder 5a is clearly an assembly comprising a body and a slider, which is slidably mounted on the upper support 3a. The slider is also provided with a nut, which is threadedly connected to the corresponding first lead screw 39a. The second tool holder 13a and the third tool holder 19a obviously have the same structure. Undoubtedly, according to the working principle of the present invention, the transverse sliding drive mechanism can be divided into an upper transverse sliding drive mechanism and a lower transverse sliding drive mechanism. The first lead screw 39a, which is rotatably mounted on the upper support 3a, is part of the upper transverse sliding drive mechanism, while the first lead screw 39a, which is rotatably mounted on the lower support 12a, is part of the lower transverse sliding drive mechanism. As is conventional in the art, the two first lead screws 39a can be simultaneously connected to the first motor 40a for transmission, or they can be separately connected to an independent motor for transmission.

[0056] like Figure 8 and Figure 9 As shown, the longitudinal sliding drive mechanism includes a second lead screw 41a extending along the length of the longitudinal support 18a. The second lead screw 41a is rotatably mounted on the longitudinal support 18a. The second lead screw 41a is connected to a second motor 42a. The third tool post 19a is mounted on the second lead screw 41a by a threaded connection.

[0057] like Figure 2 , Figure 7 and Figure 9As shown, a fixed bracket 43a is fixedly installed on each of the first tool holder 5a, the second tool holder 13a, and the third tool holder 19a. Each fixed bracket 43a is fixedly connected to one end of a cable drag chain 44a, and the other end of each cable drag chain 44a is fixed to the upper bracket 3a, the lower bracket 12a, and the longitudinal bracket 18a. The cable drag chain improves the stability of the movement of the first, second, and third tool holders. On the one hand, it protects the heating device circuitry, reducing scratches and other damage to the circuitry. On the other hand, it avoids burrs or uneven cuts at the edges of the heat shrink tubing, thereby improving the straightness of the cut lines and ensuring the quality of the finished busbar.

[0058] From the above content, we can conclude that:

[0059] The busbar heat shrink tubing cutting machine disclosed in this invention has a cutting platform 2a with a first slot 24a and a second slot 25a. The first slot 24a extends along the width direction of the busbar, and the second slot 25a extends along the length direction of the busbar. The second slot 25a is connected to the first slot 24a.

[0060] The top of the cutting platform 2a is fixed with an upper support 3a, and an upper transverse rolling cutting device is slidably installed on the upper support 3a. The upper transverse rolling cutting device is connected to an upper transverse sliding drive mechanism. The moving direction of the upper transverse rolling cutting device is consistent with the extension direction of the first slot 24a. The cutting tool of the upper transverse rolling cutting device is set in the first slot 24a.

[0061] The bottom of the cutting platform 2a is fixed with a lower support 12a, and a lower transverse rolling cutting device is slidably installed on the lower support 12a. The lower transverse rolling cutting device is connected to a lower transverse sliding drive mechanism. The moving direction of the lower transverse rolling cutting device is consistent with the extending direction of the first slot 24a. The cutting tool of the lower transverse rolling cutting device is set in the first slot 24a.

[0062] A longitudinal support 18a is fixed at the bottom of the cutting platform 2a. A longitudinal rolling cutting device is slidably installed on the longitudinal support 18a. The longitudinal rolling cutting device is connected to a longitudinal sliding drive mechanism. The moving direction of the longitudinal rolling cutting device is consistent with the extending direction of the second slot 25a. During cutting, the cutting tool of the longitudinal rolling cutting device is located in the second slot 25a.

[0063] The upper transverse rolling cutting device includes: a first knife holder 5a, a first knife base 6a and a first cutter 8a. The upper end of the first knife base 6a is hinged to the first knife holder 5a. A torsion spring 38a is installed between each side wall of the first knife base 6a and the first knife holder 5a. The lower end of the first knife base 6a is rotatably mounted with the first cutter 8a through a first rotating shaft 7a.

[0064] The lower transverse rolling cutting device includes: a second blade holder 13a, a second blade support 14a, and a second blade 16a. The lower end of the second blade support 14a is hinged to the second blade holder 13a. A torsion spring 38a is installed between each side wall of the second blade support 14a and the second blade holder 13a. The upper end of the second blade support 14a is rotatably mounted with the second blade 16a via a second rotating shaft 15a.

[0065] To cut the heat shrink tubing located on the side wall of the busbar, the bottom of the first cutter 8a is lower than the top of the busbar, while the top of the second cutter 16a is higher than the bottom of the busbar. During the cutting operation, the first cutter 8a moves along the width of the busbar and first contacts the heat shrink tubing on the side wall. As it continues to move, it first cuts the heat shrink tubing on the side wall. Then, under the action of the side wall, the first cutter rotates and rises to cut the heat shrink tubing at the top of the busbar. Simultaneously, the second cutter 16a moves in the same direction as the first cutter 8a, first contacting and cutting the heat shrink tubing on the other half of the same side wall. Then, under the action of the side wall, the second cutter 16a rotates and lowers to cut the heat shrink tubing at the bottom of the busbar, thus achieving a complete cut of the heat shrink tubing in the width direction.

[0066] The torsion spring 38a not only limits the rotation angle of the first cutter holder 6b and the second cutter holder 14a, but also allows the first cutter holder 6a and the second cutter holder 14a to return to their original positions under the elastic force of the torsion spring 38a after the cutting work is completed. Furthermore, when the first cutter holder 6a and the second cutter holder 14a cut the heat shrink tubing, they can apply a certain pressure to the first cutter 8a and the second cutter 16a, pressing them onto the heat shrink tubing. This allows the first cutter 8a and the second cutter 16a to complete the cutting of the heat shrink tubing in one go, thus ensuring the cutting effect of the first cutter 8a and the second cutter 16a on the heat shrink tubing.

[0067] The longitudinal rolling cutting device includes: a third blade holder 19a, a third blade support 20a, and a third cutter 22a. The third blade support 20a is hinged to the third blade holder 19a at its middle part. The third cutter 22a is rotatably mounted on the upper end of the third blade support 20a via a third rotating shaft 21a. A power lifting mechanism is provided between the third blade support 20a and the third blade holder 19a. The power lifting mechanism includes an ejector cylinder connected between the lower end of the third blade support 20a and the third blade holder 19a. Alternatively, an electric push rod can also be used.

[0068] The ejector cylinder 45a, through the extension and retraction of the piston rod, drives the third cutter holder 20a to rotate, thereby raising and lowering the third cutter 22a. When it is necessary to cut the heat shrink tubing along its length, the ejector cylinder raises the third cutter 22a (lifting the cutter), so that the third cutter 22a presses against the heat shrink tubing at the corresponding position for cutting. When it is not necessary to cut the heat shrink tubing along its length, the ejector cylinder 45a lowers the third cutter 22a (lowering the cutter), so that the third cutter 22a is away from the heat shrink tubing located at the bottom of the busbar, thus avoiding accidental damage to the heat shrink tubing by the third cutter 22a.

[0069] The upper transverse rolling cutting device is provided with a first heating device for increasing the temperature of its cutting tool, the lower transverse rolling cutting device is provided with a second heating device for increasing the temperature of its cutting tool, and the longitudinal rolling cutting device is provided with a third heating device for increasing the temperature of its cutting tool.

[0070] Specifically, the first heating device includes a first electric heating rod 9a, which heats the first rotating shaft 7a and conducts heat to the first cutting tool 8a through the first rotating shaft 7a; the second heating device includes a second electric heating rod 17a, which heats the second rotating shaft 15a and conducts heat to the second cutting tool 16a through the second rotating shaft 15a; the third heating device includes a third electric heating rod 23a, which heats the third rotating shaft 21a and conducts heat to the third cutting tool 22a through the third rotating shaft 21a.

[0071] In summary, the busbar heat shrink tubing cutting machine disclosed in this invention adopts a heated, automated, and intelligent cutting process. It utilizes an electric heating rod to heat the cutting tool, and the high-temperature tool (hot blade) can quickly cut the heat shrink tubing. Compared to existing mechanical cutting equipment, the high-temperature hot blade can complete the cutting of the heat shrink tubing in one pass, eliminating the need for repeated cutting. This improves the cutting efficiency and production efficiency of the heat shrink tubing, while also avoiding damage to the busbar caused by repeated cutting, ensuring the quality of the finished busbar. Furthermore, this invention can achieve automated cutting of the heat shrink tubing in both the width and length directions. The cut in the length direction can destroy the annular structure of the cut heat shrink tubing, eliminating the need for secondary cutting by manual tools, facilitating the peeling of the heat shrink tubing. One person can complete the cutting operation, saving labor costs.

[0072] When using the above-mentioned busbar heat shrink tubing cutting machine for cutting, the following process steps are included:

[0073] S1. Call the specifications of the busbar 4 that needs to be worked. In this invention, after the cutting machine is powered on, the operator presses and holds the reset button to make the cutting machine automatically complete the reset and zeroing work, and at the same time calls the specifications of the busbar 4 that needs to be cut.

[0074] S2. Switch the cutting machine to automatic operation mode.

[0075] S3. Following the laser line indication from the laser positioner 10a, the operator places the main line 4 into position. After completing the preparation, the cutting machine switches to automatic operation mode. The laser positioner 10a emits a positioning laser line, forming a cross-shaped positioning point on the cutting platform 2a. The operator places the main line 4 into the corresponding position according to the position indicated by the cross-shaped positioning point, aligning the first cutting position of the heat shrink tubing with the cross-shaped positioning point.

[0076] S4. Press the start button by hand or use the foot start switch to start the cutting machine.

[0077] S5. The cutting machine automatically completes the clamping and fixing of the busbar 4. In this invention, after the cutting machine is started, the first clamping cylinder 27a and the second clamping cylinder 30a are started simultaneously or individually according to the set process parameters. The first clamping cylinder 27a drives the lifting plate 26a and the pressure plate 28a to move downward, and the second clamping cylinder 30a drives the clamping arm 29a to move downward, so that the pressure plate 28a and the clamping arm 29a are simultaneously pressed on the busbar 4, thereby fixing the busbar 4.

[0078] S6. The cutting machine automatically cuts the heat shrink tubing along the width direction of the busbar 4. In this invention, after the cutting machine is started, the first heating rod 9a and the second heating rod 17a start simultaneously. The first heating rod 9a heats the first cutter 8a, and the second heating rod 17a heats the second cutter 16a. Then, the first motor 40a starts, driving the two first lead screws 39a to rotate simultaneously, causing the first cutter holder 5a and the second cutter holder 13a to move simultaneously along the width direction of the busbar 4. During the movement, the first cutter 8a and the second cutter 16a first contact the heat shrink tubing portion located on the side wall of the busbar 4 and cut the heat shrink tubing portion located on the side wall of the busbar 4. Then, under the action of the side wall of busbar 4, the first cutter 8a rotates and rises, and the second cutter 16a rotates and lowers. The first cutter 8a cuts the heat shrink tubing at the top of busbar 4, and the second cutter 16a cuts the heat shrink tubing at the bottom of busbar 4. When the first cutter 8a and the second cutter 16a leave the busbar, they will rotate back to their original positions under the action of the torsion spring 38a and cut the heat shrink tubing on the other side wall of busbar 4, thus achieving a complete cut of the heat shrink tubing in the width direction. After the cutting work at this position is completed, the first motor 40a stops automatically, and the first clamping cylinder 27a and the second clamping cylinder 30a start again, driving the pressure plate 28a and the clamping arm 29a to rise.

[0079] Afterwards, the operator pushes the busbar 4 inwards, aligning the other cutting position of the heat shrink tubing with the cross-shaped positioning point. The end of the nut 4 abuts against the second movable baffle 34a. The operator presses the start button or foot start switch again to start the cutting machine. The busbar 4 is fixed again using the pressure plate 28a and the clamping arm 29a. The first motor 40a starts, driving the two first lead screws 39a to rotate in opposite directions. The first cutter 8a and the second cutter 16a move along the width direction of the busbar 4 again, completing the cutting work at the second cutting position of the heat shrink tubing.

[0080] S7. The cutting machine automatically completes the cutting of the heat shrink tubing along the length of the busbar 4. In this invention, during the process of the first cutter 8a and the second cutter 16a cutting the heat shrink tubing at the second cutting position, the third heating rod 23a is activated to heat the third cutter 22a. At the same time, the ejector cylinder 45a is activated, which drives the third cutter holder 20a to rotate, thereby raising the third cutter 22a and pressing it onto the heat shrink tubing. The second motor 42a is activated, which drives the second lead screw 41a to rotate, thereby driving the third cutter holder 19a to move along the length of the busbar 4 to cut the heat shrink tubing in the length direction, thus completing the cutting operation of the heat shrink tubing.

[0081] S8. The cutting machine automatically opens the clamping part, and the operator takes out the busbar 4. In this invention, after the cutting operation of the heat shrink tubing is completed, the first motor 40a and the second motor 42a stop simultaneously, and the ejector cylinder 45a starts to drive the third cutter holder 20a to rotate and return to its position, thereby pressing down the third cutter 22a. At the same time, the first clamping cylinder 27a and the second clamping cylinder 30a start simultaneously or individually according to the set process parameters, driving the pressure plate 28a and the clamping arm 29a to rise. After that, the operator can take out the busbar 4.

[0082] S9. The operator tears off the cut portion of the heat shrink tubing along the cutting line to complete the cutting of the heat shrink tubing on busbar 4.

[0083] After implementing the above cutting process, the heat shrink tubing cutting machine disclosed in this invention can cut an "H" shaped cut (two horizontal cuts and one vertical cut) on the heat shrink tubing. The "H" shaped cut is suitable for removing material from the middle part of the heat shrink tubing. Of course, if the cutting step at the second cutting position in step S3 is omitted, a "T" shaped cut (one horizontal cut and one vertical cut) can be cut. The "T" shaped cut is suitable for aligning the edges of the heat shrink tubing. The vertical cut can destroy the annular structure of the cut heat shrink tubing, thus eliminating the need for manual secondary cutting with a tool, facilitating the peeling of the heat shrink tubing, and avoiding uneven cutting of the heat shrink tubing due to slippage of the busbar 4, ensuring the finished product quality of the busbar 4. During the entire cutting process, the operator only needs to adjust the position of the busbar 4, achieving one-time cutting of the heat shrink tubing, greatly improving the cutting efficiency of the heat shrink tubing, and one person can complete the entire cutting operation, reducing labor costs.

[0084] Example 2

[0085] Figures 10-16 Another busbar heat shrink tubing cutting machine is disclosed. Compared with Example 1, the working principle and overall layout are basically the same, but the local structure has been improved. For the sake of brevity, only the improvements are described in detail below, and the similarities are not repeated.

[0086] like Figure 10 As shown, a busbar heat shrink tubing cutting machine has a cutting platform 2b with a first slot 24b and a second slot 25b. The first slot 24b extends along the width direction of the busbar, and the second slot 25b extends along the length direction of the busbar. The second slot 25b is connected to the first slot 24b.

[0087] like Figure 10 and Figure 11As shown, an upper support 3b is fixed to the top of the cutting platform 2b, and an upper transverse rolling cutter is slidably mounted on the upper support 3b. The upper transverse rolling cutter is driven by an upper transverse sliding drive mechanism. The moving direction of the upper transverse rolling cutter is consistent with the extension direction of the first slot 24a, and the cutting tool of the upper transverse rolling cutter is disposed within the first slot 24b. A lower support 12b is fixed to the bottom of the cutting platform 2b, and a lower transverse rolling cutter is slidably mounted on the lower support 12b. The lower transverse rolling cutter is driven by a lower transverse sliding drive mechanism. The moving direction of the lower transverse rolling cutter is consistent with the extension direction of the first slot 24b, and the cutting tool of the lower transverse rolling cutter is disposed within the first slot 24b. A longitudinal support 18b is also fixed to the bottom of the cutting platform 2b, and a longitudinal rolling cutter is slidably mounted on the longitudinal support 18b. The longitudinal rolling cutter is driven by a longitudinal sliding drive mechanism. The moving direction of the longitudinal rolling cutter is consistent with the extension direction of the second slot 25b. During cutting, the cutting tool of the longitudinal rolling cutter is disposed within the second slot 25b.

[0088] like Figures 10-14 As shown, the upper transverse rolling cutting device includes: a first blade holder 5b, a first blade support 6b and a first blade 8b. The upper end of the first blade support 6b is hinged to the first blade holder 5b. A torsion spring 38b is installed between each side wall of the first blade support 6b and the first blade holder 5b. The lower end of the first blade support 6b is rotatably mounted with the first blade 8b through a first rotating shaft 7b.

[0089] like Figure 11 As shown, the lower transverse rolling cutting device includes: a second blade holder 13b, a second blade support 14b, and a second blade 16b. The lower end of the second blade support 14b is hinged to the second blade holder 13b. A torsion spring 38b is installed between each side wall of the second blade support 14b and the second blade holder 13b. The upper end of the second blade support 14b is rotatably mounted with the second blade 16b via a second rotating shaft (not shown in the figure).

[0090] like Figure 11 , Figure 15 and Figure 16 As shown, the longitudinal rolling cutting device includes: a third blade holder 19b, a third blade support 20b, and a third blade 22b. The third blade support 20b is hinged to the third blade holder 19b at its middle. The third blade 22b is rotatably mounted on the upper end of the third blade support 20b via a third rotating shaft 21b. A power-driven blade lifting mechanism is provided between the third blade support 20b and the third blade holder 19b. The function of the power-driven blade lifting mechanism is to lift the blade when cutting is needed and lower the blade when cutting is not needed. Specifically, the power-driven blade lifting mechanism includes a cylinder 45b connected between the other end of the third blade support 20b and the third blade holder 19b. Alternatively, other electric or pneumatic power components such as an electric push rod can also be used.

[0091] The upper transverse rolling cutting device is equipped with a first heating device for increasing the temperature of the first cutter 8b, the lower transverse rolling cutting device is equipped with a second heating device for increasing the temperature of the second cutter 16b, and the longitudinal rolling cutting device is equipped with a third heating device for increasing the temperature of the third cutter 22b.

[0092] like Figures 12-14 As shown, the first heating device includes a first electric heating rod 9b, which heats the first rotating shaft 7b and conducts heat to the first cutting tool 8b via the first rotating shaft 7b. The first tool holder 6b includes a first tool holder body 61b and a first heating rod support 62b fixedly connected together. The first tool holder body 61b and the first tool holder 5b are hinged together by a hinge pin 68b. A bearing 69b is provided between the hinge pin 68b and the first tool holder body 61b, and the hinge pin 68b is fixedly connected to the first tool holder 5b. The first rotating shaft 7b is rotatably connected to the first tool holder body 61b via a bearing 65b and is axially fixed by a nut 71b. The first rotating shaft 7b is provided with a first central hole. The first electric heating rod 9b is fixed to the first heating rod support 62b and extends into the first central hole, with a gap between the first electric heating rod 9b and the inner wall of the first central hole. Preferably, the first electric heating rod 9b passes through the mounting hole of the first heating rod support 62b and is fastened by a fastener 67b.

[0093] The first central hole is a through hole, and the first cutting tool 8b is attached to and fixed to the outer end face of the first rotating shaft 7b, thus sealing the first central hole. In this structure, the first rotating shaft 7b is not exposed, so it will not interfere with the workpiece during cutting. The first cutting tool 8b is fastened to the outer end face of the first rotating shaft 7b by fasteners. The fastener connection facilitates tool replacement and is simpler and more practical. Furthermore, the countersunk screws are not exposed during tightening, further reducing the likelihood of interference with cutting.

[0094] Because of the gap, the first rotating shaft 7b will not wear down the first electric heating rod 9b when rotating, and will heat the first rotating shaft 7b through thermal radiation. Furthermore, the first cutting tool 8b is fixed to its outer end face by fasteners, allowing heat to be conducted to it through contact, causing it to heat up rapidly and become a "hot knife," which is beneficial for cutting. The first rotating shaft 7b has a head, the cross-sectional area of ​​which is significantly larger than other parts of the first rotating shaft 7b, thus increasing the heat transfer area when the first rotating shaft 7b contacts the first cutting tool 8b.

[0095] The heat generated by the first electric heating rod 9b when energized is only effective when it is conducted to the first cutting tool 8b; the less heat conducted to other parts, the better. For this reason, the first tool holder body 61b is provided with heat dissipation holes 63b, and the first heating rod support 62b is provided with heat dissipation holes 64b. Furthermore, as... Figure 14 As shown, the first electric heating rod support 62b is designed with a U-shaped structure, which has a hollow portion to reduce the heat transfer area in contact with the first tool holder body 61b. The first tool holder body 61b has a through hole 66b, which communicates with the hollow portion of the U-shaped structure. This not only improves the heat dissipation effect but also facilitates the passage of the wires of the first electric heating rod 9b through this hole.

[0096] In the lower transverse rolling cutter, the heating device and its mounting structure, heat conduction structure, etc., are collectively referred to as the hot knife device. Compared with the hot knife device in the aforementioned upper transverse rolling cutter, its structure and principle are basically the same, and are briefly described as follows:

[0097] In the longitudinal rolling cutting device, the second heating device includes a second electric heating rod, which heats the second rotating shaft and conducts heat to the second cutter through the second rotating shaft. The second cutter holder includes a second cutter holder body and a heating rod support fixedly connected together. The second cutter holder body is hinged to the second cutter holder, and the second rotating shaft is rotatably connected to the second cutter holder body. The second rotating shaft has a second central hole. The second electric heating rod is fixed to the second heating rod support and extends into the second central hole, with a gap between the second electric heating rod and the inner wall of the second central hole. The second central hole is a through hole, and the second cutter is attached to and fixed to the outer end face of the second rotating shaft, closing the second central hole. Both the second cutter holder body and the second heating rod support are provided with heat dissipation holes.

[0098] In the longitudinal rolling cutter, the heating device and its mounting structure, heat conduction structure, etc., are collectively referred to as the hot knife device. Compared with the hot knife device in the aforementioned transverse rolling cutter, its structure and principle are basically the same, and are briefly described as follows:

[0099] like Figure 15 and Figure 16 As shown, in the longitudinal rolling cutting device, the third heating device includes a third electric heating rod 23b, which is used to heat the third rotating shaft 21b and conduct heat to the third cutter 22b through the third rotating shaft 21b.

[0100] The third tool holder 20b includes a third tool holder body 201b and a third heating rod support 202b fixedly connected together. The third tool holder body 201b and the third tool holder 19b (see...) Figure 11The third rotating shaft 21b is hinged and rotatably connected to the third tool holder body through the bearing 206. The third rotating shaft 21b is provided with a third central hole. The third electric heating rod 23b is fixed to the third heating rod bracket 202b and extends into the third central hole. There is a gap between the third electric heating rod 23b and the inner wall of the third central hole.

[0101] The third central hole is a through hole. The third cutting tool is attached to and fixed to the outer end face of the third rotating shaft 21b, and the third cutting tool 22b closes the third central hole. The third tool holder body 201b is provided with a heat dissipation hole 203b, and the third heating rod support 202b is also provided with a heat dissipation hole 204b. The third electric heating rod 23b passes through the mounting hole of the third heating rod support 202b and is fixed by a fastener 207b.

[0102] In this invention, the rolling cutting device is implemented by a sliding drive mechanism.

[0103] like Figure 10 and Figure 11 As shown, the upper transverse sliding drive mechanism includes two first lead screws 39b, one of which is rotatably mounted on the upper bracket 3b. The first tool post 5b is threadedly connected to the first lead screw 39b, and the first lead screw 39b is drively connected to the first motor 40b. The first tool post 5b includes a first tool post body 51b and a first slider 52b fixedly connected together. The first slider 52b is slidably mounted on the upper bracket 3b and is provided with a first nut (not shown in the figure), which is threadedly connected to the first lead screw 39b.

[0104] The lower lateral sliding drive mechanism includes another first lead screw 39b, which is rotatably mounted on the lower bracket 12b. The second tool post 13b is threadedly connected to the other first lead screw 39b. The other first lead screw 39b is either connected to the first motor 40b or driven by an independent motor. The second tool post 13b includes a second tool post body 131b and a second slider 132b fixedly connected together. The second slider 132b is slidably mounted on the lower bracket 12b and is provided with a second nut (not shown in the figure). The second nut is threadedly connected to the other first lead screw 39b.

[0105] The longitudinal sliding drive mechanism includes a second lead screw 41b, which is rotatably mounted on the longitudinal support 18b. A third tool post 19b is threadedly connected to the second lead screw 41b, and the second lead screw 41b is drive-connected to the second motor 42b. The third tool post 19b includes a second tool post body 191b and a third slider 192b fixedly connected together. The third slider 192b is slidably mounted on the lower support 12b and is provided with a third nut (not shown in the figure), which is threadedly connected to the second lead screw 41b.

[0106] like Figure 10 As shown, the cutting platform 3b is also equipped with a front clamping mechanism for clamping the front part of the busbar and a rear clamping mechanism for clamping the rear part of the busbar. The structure is slightly different from that of Embodiment 1:

[0107] The front clamping section includes a first clamping cylinder 27b mounted on the upper bracket 3b. The first clamping cylinder 27b is connected to a pressure plate 28b. The first clamping cylinder 27b drives the pressure plate 28b to rise and fall, clamping the busbar. The rear clamping section includes a clamping arm 29b. One end of the clamping arm 29b is positioned above the second slot 25b, and the other end of the clamping arm 29b is connected to a second clamping cylinder 30b. The cylinder body of the second clamping cylinder 30b is fixed on the cutting platform 2b. The second clamping cylinder 30b clamps the busbar by swinging. The front and rear clamping sections achieve separate clamping of both ends of the busbar, thereby improving the reliability of busbar clamping.

[0108] Using the busbar thermoplastic tube cutting machines disclosed in Embodiments 1 and 2, "H"-shaped cuts (two transverse cuts and one longitudinal cut) or "T"-shaped cuts (one transverse cut and one longitudinal cut) can be made on the heat shrink tubing, providing good adaptability for material removal of the busbar heat shrink tubing. However, in some cases, if only the ends of the heat shrink tubing need to be trimmed, the longitudinal cut is easier to control. The cutter simply cuts from the edge to the limit point and then retracts, without the need for active cutter lifting. In this case, the longitudinal rolling cutter with a power-driven cutter lifting mechanism in Embodiments 1 and 2 can be replaced with a lower transverse rolling cutter. In this way, the longitudinal rolling cut is the same as the transverse rolling cut, with the cutter automatically lifted by the busbar and then automatically reset by the torsion spring, eliminating the need for cutter lifting power, thereby simplifying the equipment and saving energy.

[0109] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A busbar heat shrink tubing cutting unit, comprising: A cutting platform, wherein the cutting platform is provided with a first slot, the first slot extending along the width direction of the busbar; The cutting platform is fixed with an upper support at its top, and an upper transverse rolling cutter is slidably mounted on the upper support. The upper transverse rolling cutter is driven by an upper transverse sliding drive mechanism. The moving direction of the upper transverse rolling cutter is consistent with the extension direction of the first slot. The cutting blade of the upper transverse rolling cutter is disposed within the first slot. The cutting platform is fixed with a lower support at its bottom, and a lower transverse rolling cutter is slidably mounted on the lower support. The lower transverse rolling cutter is driven by a lower transverse sliding drive mechanism. The moving direction of the lower transverse rolling cutter is consistent with the extension direction of the first slot. The cutting blade of the lower transverse rolling cutter is disposed within the first slot. The upper and lower transverse rolling cutters cooperate to cut transverse slits on the heat shrink tubing sleeved on the busbar, and cut a portion of the heat shrink tubing into a ring structure for peeling through the transverse slits. The cutting platform is provided with a second slot, which extends along the length of the busbar and is connected to the first slot. The bottom of the cutting platform is fixed with a longitudinal support, and the longitudinal support is slidably mounted with a longitudinal rolling cutter for cutting longitudinal slits on the annular structure so as to peel the annular structure from the generatrix. The longitudinal rolling cutter is driven by a longitudinal sliding drive mechanism. The moving direction of the longitudinal rolling cutter is consistent with the extension direction of the second slot. During cutting, the cutting tool of the longitudinal rolling cutter is located in the second slot. The upper transverse rolling cutting device includes: a first knife holder, a first knife base and a first knife. The upper end of the first knife base is hinged to the first knife holder. A torsion spring is installed between each side wall of the first knife base and the first knife holder. The lower end of the first knife base is rotatably mounted with the first knife through a first rotating shaft. The lower transverse rolling cutting device includes: a second blade holder, a second blade support, and a second blade. The lower end of the second blade support is hinged to the second blade holder. A torsion spring is installed between each side wall of the second blade support and the second blade holder. The upper end of the second blade support is rotatably mounted with the second blade via a second rotating shaft. The longitudinal rolling cutting device includes: a third blade holder, a third blade support, and a third blade. The third blade support is hinged to the third blade holder at its middle part. The third blade is rotatably mounted on the upper end of the third blade support via a third rotating shaft. A power blade lifting mechanism is provided between the third blade support and the third blade holder. The power lifting mechanism includes an ejector cylinder or electric push rod connected between the lower end of the third tool holder and the third tool post; The upper transverse rolling cutting device is provided with a first heating device for increasing the temperature of its first blade, the lower transverse rolling cutting device is provided with a second heating device for increasing the temperature of its second blade, and the longitudinal rolling cutting device is provided with a third heating device for increasing the temperature of its third blade. The first heating device includes a first electric heating rod, which heats the first rotating shaft and conducts heat to the first cutting tool through the first rotating shaft; the second heating device includes a second electric heating rod, which heats the second rotating shaft and conducts heat to the second cutting tool through the second rotating shaft; the third heating device includes a third electric heating rod, which heats the third rotating shaft and conducts heat to the third cutting tool through the third rotating shaft. The first tool holder includes a first tool holder body and a first heating rod bracket fixedly connected together. The first tool holder body is hinged to the first tool holder. The first rotating shaft is rotatably connected to the first tool holder body. The first rotating shaft is provided with a first central hole. The first electric heating rod is fixed to the first heating rod bracket and extends into the first central hole. A gap is left between the first electric heating rod and the inner wall of the first central hole. The second tool holder includes a second tool holder body and a second heating rod bracket fixedly connected together. The second tool holder body is hinged to the second tool holder. The second rotating shaft is rotatably connected to the second tool holder body. The second rotating shaft is provided with a second central hole. The second electric heating rod is fixed to the second heating rod bracket and extends into the second central hole. A gap is left between the second electric heating rod and the inner wall of the second central hole. The third tool holder includes a third tool holder body and a third heating rod bracket fixedly connected together. The third tool holder body is hinged to the third tool holder. The third rotating shaft is rotatably connected to the third tool holder body. The third rotating shaft is provided with a third central hole. The third electric heating rod is fixed to the third heating rod bracket and extends into the third central hole. A gap is left between the third electric heating rod and the inner wall of the third central hole.

2. The busbar heat shrink tubing cutting unit according to claim 1, characterized in that, The first central hole is a through hole, and the first cutting tool is attached to and fixed to the outer end face of the first rotating shaft, thus closing the first central hole; the second central hole is a through hole, and the second cutting tool is attached to and fixed to the outer end face of the second rotating shaft, thus closing the second central hole; the third central hole is a through hole, and the third cutting tool is attached to and fixed to the outer end face of the third rotating shaft, thus closing the third central hole.

3. The busbar heat shrink tubing cutting unit according to claim 2, characterized in that, The first rotating shaft is provided with a head, and the cross-sectional area of ​​the head is significantly larger than that of the other parts of the first rotating shaft. The first tool is fastened to the outer end face of the head by fasteners. The structure of the second rotating shaft and the third rotating shaft is the same as that of the first rotating shaft.

4. The busbar heat shrink tubing cutting unit according to claim 2, characterized in that, The first tool holder body and the first heating rod support, the second tool holder body and the second heating rod support, and the third tool holder body and the third heating rod support are all provided with heat dissipation holes.

5. The busbar heat shrink tubing cutting unit according to claim 1, characterized in that, The upper transverse sliding drive mechanism includes a first lead screw, which is rotatably mounted on the upper bracket. The first tool post is threadedly connected to the first lead screw, and the first lead screw is driven by a first motor. The lower lateral sliding drive mechanism includes another first lead screw, which is rotatably mounted on the lower bracket. The second tool post is threadedly connected to the other first lead screw, and the other first lead screw is either connected to the first motor or driven by an independent motor. The longitudinal sliding drive mechanism includes a second lead screw, which is rotatably mounted on the longitudinal support. The third tool post is threadedly connected to the second lead screw, and the second lead screw is driven by a second motor.

6. A busbar heat shrink tubing cutting machine, characterized in that, Includes the busbar heat shrink tubing cutting unit as described in any one of claims 1 to 5.

7. The busbar heat shrink tubing cutting machine according to claim 6, characterized in that, The cutting platform is equipped with a front clamping mechanism for clamping the front part of the busbar and a rear clamping mechanism for clamping the rear part of the busbar.

Images