Equipment for cutting copper bar heat-shrinkable sleeve

Abstract

The invention discloses equipment for cutting a heat-shrinkable sleeve of a copper bar, which realizes automatic cutting of the heat-shrinkable sleeve on the surface of the copper bar and can meet different size requirements, and comprises a machine table provided with a cutting station; a pair of symmetrically-arranged side cutter assemblies are arranged in the left-right direction of the cutting station, and an upper cutter assembly and a lower cutter assembly are arranged in the up-down direction of the cutting station. A channel allowing a to-be-cut copper bar to enter is defined by the side cutter assembly, the upper cutter assembly and the lower cutter assembly, and a length fixing assembly is arranged at the other end of the channel. The length direction of the channel is defined as the X axis, the horizontal direction perpendicular to the X axis is defined as the Y axis, and the direction perpendicular to the XY plane is defined as the Z axis; the side cutter assembly is provided with a side cutter moving along the Y axis. The upper cutter assembly is provided with an upper cutter moving along the Z axis and a pressing rod. The lower cutter assembly is provided with a lower cutter moving along the Z axis. The fixed-length assembly is provided with a limiting block which adjusts the position along the X axis and is used for limiting the length of the copper bar entering the channel.

Description

Technical Field

[0001] The present invention belongs to the technical field of copper busbar sleeves, and particularly refers to a device for cutting heat shrink sleeves of copper busbars. Background Art

[0002] During the production and processing process, heat shrink sleeves of specific colors are usually wrapped on the surface of copper busbars for phase sequence differentiation and insulation protection.

[0003] The heat shrink sleeve is a kind of plastic sleeve, also known as a heat shrink protection sleeve, with properties such as high-temperature shrinkage, softness, flame retardancy, insulation, and corrosion prevention. When heated by a heat source (such as a hot air gun) in a high-temperature treatment process, the heat shrink sleeve will shrink and tightly wrap around the surface of the copper busbar. Generally, the size after shrinkage of the heat shrink sleeve is not completely controllable and may cover the ends, overlapping holes, etc. of the copper busbar. Therefore, in actual use, it is also necessary to remove the excess heat shrink sleeve wrapped on the surface of the copper busbar.

[0004] Currently, the cutting of the heat shrink sleeve on the surface of the copper busbar is mainly carried out manually. On the one hand, it has common drawbacks of manual operations such as low cutting efficiency and high labor intensity. On the other hand, the cutting quality highly depends on manual experience, operation techniques, and sense of responsibility, and it is easy to scratch the surface of the copper busbar. Summary of the Invention

[0005] The main purpose of the present invention is to provide a device for cutting heat shrink sleeves of copper busbars, solve the problems existing in the prior art, realize the automatic cutting of the heat shrink sleeve on the surface of the copper busbar, and meet different size requirements.

[0006] To achieve the above object, the solution of the present invention is: A device for cutting heat shrink sleeves of copper busbars includes a machine table, and a cutting station is provided on the machine table; a pair of symmetrically arranged side cutting knife assemblies are arranged in the left-right direction of the cutting station, and an upper cutting knife assembly and a lower cutting knife assembly are respectively arranged in the up-down direction; a channel for the copper busbar to be cut to enter is formed among the side cutting knife assemblies, the upper cutting knife assembly, and the lower cutting knife assembly, and a fixed-length component is arranged at the other end of the channel; define the length direction of the channel as the X-axis, the horizontal direction perpendicular to the X-axis as the Y-axis, and the direction perpendicular to the XY plane as the Z-axis; the side cutting knife assembly is provided with a side cutting knife moving along the Y-axis; the upper cutting knife assembly is provided with an upper cutting knife and a pressing rod moving along the Z-axis; the lower cutting knife assembly is provided with a lower cutting knife moving along the Z-axis; the fixed-length component is provided with a limit block for adjusting the position along the X-axis to limit the length of the copper busbar entering the channel.

[0007] The side cutter assembly includes a slide seat that moves along the Y-axis, a slider that slides along the Y-axis and fits in the slide seat, and a Y-axis cylinder installed at the end of the slide seat; the side cutter is installed on the slider; the slide seat is provided with a Y-axis slide groove for the slider to slide with, and the upper and lower surfaces of the slider are provided with shaft portions that abut against the inner wall of the Y-axis slide groove, and the end of the slider is provided with a connecting port; the cylinder joint of the Y-axis cylinder is movably fitted in the connecting port to realize the transmission connection between the Y-axis cylinder and the slider.

[0008] Preferably, a round pin and a spring are provided between one of the upper and lower surfaces of the slider and the inner wall of the Y-axis slot; the spring and the round pin are sequentially embedded in the countersunk hole formed on the surface of the slider, and the round pin extends out of the surface of the slider under the action of the spring and abuts against the inner wall of the Y-axis slot, so as to drive the slider to reset.

[0009] Preferably, the inner wall of the connecting port is protruding to form a curved surface.

[0010] Preferably, first limit plates are installed on the upper and lower sides of the Y-axis slide slot, and second limit plates are installed on the left and right sides; the Y-axis cylinder is installed on one of the second limit plates, and the cylinder joint is passed through the second limit plate.

[0011] Preferably, the side cutter assembly includes a first movable plate for mounting the slide seat, a Y-axis screw rod for driving the first movable plate, and a Y-axis motor for driving the Y-axis screw rod; a first slide rail for sliding cooperation of the first movable plate and a screw rod fixing seat for mounting the Y-axis screw rod are provided on the base of the side cutter assembly; a first screw rod nut for threaded connection of the Y-axis screw rod is installed on the first movable plate.

[0012] The upper cutter assembly includes a longitudinal cutter arranged along the X-axis direction, and the longitudinal cutter moves synchronously with the upper cutter; the limit block is provided with a clearance groove for avoiding the longitudinal cutter.

[0013] The upper cutter assembly includes an upper fixed seat installed on the machine platform, a first Z-axis cylinder and a second Z-axis cylinder installed on the side of the upper fixed seat, and a first lifting plate driven by the first Z-axis cylinder; the upper cutter is installed on the first lifting plate, and the pressure rod is installed at the output end of the second Z-axis cylinder.

[0014] Preferably, the upper cutter assembly comprises an upper fixed block mounted on the machine platform and located below the upper fixed seat, and an upper guide column and an upper guide sleeve that are slidably matched are provided between the upper fixed block and the first lifting plate.

[0015] The lower cutting knife assembly includes a lower fixed seat installed below the machine table, a third Z-axis cylinder installed on the lower surface of the lower fixed seat, and a second lifting plate movably fitted above the lower fixed seat and driven by the third Z-axis cylinder; the lower cutting knife is installed on the second lifting plate.

[0016] Preferably, a floating joint is provided between the output end of the third Z-axis cylinder and the second lifting plate; a lower guide post and a lower guide sleeve in sliding fit are provided between the second lifting plate and the lower fixed seat.

[0017] The fixed-length component includes a fixed-length base installed on the machine table, an X-axis motor installed on the fixed-length base, and a second moving plate connected to the X-axis motor in transmission and moving along the X-axis direction; the limit block is installed on the second moving plate.

[0018] Preferably, an X-axis lead screw parallel to the X-axis motor and a second slide rail for the second moving plate to slide fit are provided on the fixed-length base, and the second slide rail is arranged in parallel with the X-axis lead screw; the X-axis lead screw and the X-axis motor are driven by a belt and are threadedly connected to a second lead screw nut below the second moving plate; the fixed-length component further includes an X-axis cylinder installed on the second moving plate, and the limit block is installed at the output end of the X-axis cylinder.

[0019] An arc-shaped cutting edge is provided on the cutting edge of the side cutting knife.

[0020] Thermocouples and heating rods are installed inside the side cutting knife, the upper cutting knife, and the lower cutting knife.

[0021] A dust cover is provided on the surface of the machine table to cover the side cutting knife assembly, the upper cutting knife assembly, the lower cutting knife assembly, and the fixed-length component, and an inlet for the copper busbar to enter is reserved; an operation panel is also installed on the machine table.

[0022] After adopting the above technical solution, the present invention has the following technical effects: The present invention sets each cutting knife assembly in the up, down, left, and right directions of the cutting station of the machine table. During cutting, the copper busbar to be cut can be pressed and fixed at the cutting station by the pressure rod, and the heat shrinkable tube can be cut in different directions on the surface of the copper busbar by the side cutting knife, the upper cutting knife, and the lower cutting knife, realizing automated production; with the cooperation of the mechanical structure, the cutting force of each cutting knife is controllable, which can ensure the cutting quality and improve the cutting efficiency; the length of the copper busbar entering the channel can be controlled by the limit block adjustable in the X-axis direction, so as to accurately control the position where each cutting knife acts on the surface of the copper busbar and meet different production requirements. Description of the Drawings

[0023] Figure 1 It is a three-dimensional view of a specific embodiment of the present invention.

[0024] Figure 2 Is a partial structure three-dimensional view of a specific embodiment of the present invention (hiding the dust cover and side cover plate).

[0025] Figure 3 Is the front view of the side cutting knife assembly of a specific embodiment of the present invention.

[0026] Figure 4 Is the top view of the side cutting knife assembly of a specific embodiment of the present invention.

[0027] Figure 5 Is the front view of a partial structure of the side cutting knife assembly of a specific embodiment of the present invention (hiding the side cutting knife).

[0028] Figure 6 Is the exploded view of the side cutting knife assembly of a specific embodiment of the present invention.

[0029] Figure 7 Is the three-dimensional view of the upper cutting knife assembly of a specific embodiment of the present invention.

[0030] Figure 8 Is the front view of the upper cutting knife assembly of a specific embodiment of the present invention.

[0031] Figure 9 Is the rear view of the upper cutting knife assembly of a specific embodiment of the present invention.

[0032] Figure 10 Is the top view of the upper cutting knife assembly of a specific embodiment of the present invention.

[0033] Figure 11 Is the three-dimensional view of the lower cutting knife assembly of a specific embodiment of the present invention.

[0034] Figure 12 Is the front view of the lower cutting knife assembly of a specific embodiment of the present invention.

[0035] Figure 13 Is the three-dimensional view of the fixed-length component of a specific embodiment of the present invention.

[0036] Figure 14 Is the side view of the fixed-length component of a specific embodiment of the present invention.

[0037] Figure 15 Is the top view of the fixed-length component of a specific embodiment of the present invention.

[0038] Explanation of the reference numerals in the drawings: 1 - Machine platform; 11 - Cutting station; 2 - Side cutting knife assembly; 21 - Side cutting knife; 211 - Arc-shaped cutting edge; 22 - Slide base; 221 - Y-axis chute; 222 - First limit plate; 223 - Second limit plate; 23 - Slide block; 231 - Shaft part; 232 - Connection port; 233 - Arc surface; 24 - Y-axis cylinder; 241 - Cylinder joint; 25 - Round head pin; 26 - Spring; 27 - First moving plate; 271 - First lead screw nut; 28 - Y-axis lead screw; 29 - Y-axis motor; 20 - First slide rail; 3 - Upper cutting knife assembly; 31 - Upper cutting knife; 32 - Pressure bar; 33 - Longitudinal cutting knife; 34 - Upper fixed seat; 35 - First Z-axis cylinder; 36 - Second Z-axis cylinder; 37 - First lifting plate; 38 - Upper fixing block; 39 - Upper guide post; 30 - Upper guide sleeve; 4 - Lower cutting knife assembly; 41 - Lower cutting knife; 42 - Lower fixed seat; 43 - Third Z-axis cylinder; 44 - Second lifting plate; 45 - Floating joint; 46 - Lower guide post; 47 - Lower guide sleeve; 5 - Fixed length assembly; 51 - Limit block; 511 - Relief groove; 52 - Fixed length base; 53 - X-axis motor; 54 - Second moving plate; 541 - Second lead screw nut; 55 - X-axis lead screw; 56 - Belt; 57 - Second slide rail; 6 - Thermocouple; 7 - Heating rod; 8 - Dust cover; 81 - Inlet; 82 - Heat dissipation hole; 9 - Operation panel; 10 - Heat insulation pad. Detailed implementation manners

[0039] In order to further explain the technical solution of the present invention, the present invention will be elaborated in detail through specific embodiments below.

[0040] Refer to Figures 1-15 As shown, the present invention discloses a device for cutting heat shrinkable sleeves of copper bars, including a machine table 1, a side cutting knife assembly 2, an upper cutting knife assembly 3, a lower cutting knife assembly 4 and a fixed length assembly 5; The machine table 1 is provided with a cutting station 11; A pair of symmetrically arranged side cutting knife assemblies 2 are arranged in the left-right direction of the cutting station 11, and an upper cutting knife assembly 3 and a lower cutting knife assembly 4 are respectively arranged in the up-down direction; A channel for the copper bar to be cut to enter is formed among the side cutting knife assembly 2, the upper cutting knife assembly 3 and the lower cutting knife assembly 4, and a fixed length assembly 5 is arranged at the other end of the channel; Refer to Figure 1As shown in the figure, the length direction of the channel is defined as the X-axis, the horizontal direction perpendicular to the X-axis is defined as the Y-axis, and the direction perpendicular to the XY plane is defined as the Z-axis; the side cutting knife assembly 2 is provided with a side cutting knife 21 that moves along the Y-axis; the upper cutting knife assembly 3 is provided with an upper cutting knife 31 and a pressing rod 32 that move along the Z-axis; the lower cutting knife assembly 4 is provided with a lower cutting knife 41 that moves along the Z-axis; the fixed-length assembly 5 is provided with a limit block 51 that adjusts its position along the X-axis, which is used to limit the length of the copper bar entering the channel.

[0041] Through the above solution, in the present invention, cutting knife assemblies are arranged in the up, down, left, and right directions of the cutting station 11 of the machine table 1. During cutting, the copper bar to be cut can be tightly fixed on the cutting station 11 by the pressing rod 32, and the heat shrinkable tube on the surface of the copper bar can be cut in different directions by the side cutting knife 21, the upper cutting knife 31, and the lower cutting knife 41, realizing automated production; with the cooperation of the mechanical structure, the cutting force of each cutting knife is controllable, which can ensure the cutting quality and improve the cutting efficiency; the length of the copper bar entering the channel can be controlled by the limit block 51 that is adjustable in the X-axis direction, so as to accurately control the position where each cutting knife acts on the surface of the copper bar and meet different production requirements.

[0042] The following shows specific embodiments of the present invention.

[0043] Refer to Figure 6 As shown in the figure, an arc-shaped cutting edge 211 is provided on the cutting edge of the above-mentioned side cutting knife 21, which is used to match the arc of the left and right sides of the copper bar.

[0044] Refer to Figure 6 、 7 As shown in Figures 11, thermocouples 6 and heating rods 7 are installed inside the above-mentioned side cutting knife 21, upper cutting knife 31, and lower cutting knife 41, which are used to heat the side cutting knife 21 / upper cutting knife 31 / lower cutting knife 41, increase the temperature of the cutting knife, and realize hot cutting. In this way, the heat shrinkable tube on the surface of the copper bar can be cut more efficiently without increasing the pressure of the cutting knife on the copper bar or cutting back and forth, avoiding damage to the surface of the copper bar and improving the cutting efficiency and cutting quality.

[0045] Refer to Figure 1 As shown in the figure, a dust-proof cover 8 is provided on the surface of the above-mentioned machine table 1, which is used to cover the side cutting knife assembly 2, upper cutting knife assembly 3, lower cutting knife assembly 4, and fixed-length assembly 5, and an inlet 81 for the copper bar to enter is reserved. By setting the dust-proof cover 8, the dust-proof effect can be achieved, avoiding the contamination of components such as the driving parts and tracks of each component, extending the maintenance cycle of the equipment, and reducing the maintenance cost.

[0046] Furthermore, a plurality of heat dissipation holes 82 are provided above the channel corresponding to the dust-proof cover 8 to improve the heat dissipation effect, especially adapted to the technical solution in which the above-mentioned cutting knife assembly is provided with thermocouples 6 and heating rods 7.

[0047] Refer to Figure 1As shown, an operation panel 9 is also installed on the above-mentioned machine tool 1 for operations such as setting parameters, recording, and displaying data.

[0048] Reference Figures 3-6 As shown, this is the side cutting knife assembly 2 of the present invention, specifically the side cutting knife assembly located on the right side of the cutting station 11 (the structure on the left is the same, and the parts are processed with mirror symmetry in terms of direction): The above-mentioned side cutting knife assembly 2 includes a slide seat 22 that moves along the Y-axis, a slider 23 that slides along the Y-axis and is slidably fitted within the slide seat 22, and a Y-axis cylinder 24 installed at the end of the slide seat 22; the above-mentioned side cutting knife 21 is installed on the slider 23 by means of screwing, etc. for easy replacement; the slide seat 22 is provided with a Y-axis chute 221 for the slider 23 to slide and fit, both the upper and lower surfaces of the slider 23 are provided with shaft portions 231 that abut against the inner wall of the Y-axis chute 221 and have an arc-shaped cross-section, and a connection port 232 is provided at the end of the slider 23; the cylinder joint 241 of the Y-axis cylinder 24 is movably fitted within the connection port 232 to achieve the transmission connection between the Y-axis cylinder 24 and the slider 23. Thus, the side cutting knife assembly 2 constitutes a floating cutting knife structure. When the Y-axis cylinder 24 outputs power to push the slider 23 and the side cutting knife 21 thereon to move along the Y-axis, when the side cutting knife 21 contacts the copper bar to be cut and receives the reaction force of the copper bar / heat shrinkable sleeve, the movable gap between the cylinder joint 241 and the connection port 232 can avoid rigid connection, enabling the slider 23 to drive the side cutting knife 21 to swing with the shaft portion 231 as the fulcrum, thereby enabling the side cutting knife 21 to adapt to the shape of the side of the copper bar, fit the copper bar more closely to improve the cutting efficiency and quality, and not damage the surface of the copper bar.

[0049] In some embodiments of the above-mentioned side cutting knife assembly 2, a round head pin 25 and a spring 26 are provided between one of the upper and lower surfaces of the above-mentioned slider 23 and the inner wall of the Y-axis chute 221; the spring 26 and the round head pin 25 are sequentially embedded in the counterbore formed on the surface of the slider 23, and the round head pin 25 protrudes from the surface of the slider 23 under the action of the spring 26 and abuts against the inner wall of the Y-axis chute 221 for driving the slider 23 to reset. Thus, by providing the round head pin 25 and the spring 26, the side cutting knife 21 has an initial direction before contacting the copper bar, realizing the initialization of the side cutting knife 21 and its reset after cutting.

[0050] In some embodiments of the above-mentioned side cutting knife assembly 2, an arc surface 233 is formed by protruding the inner wall of the above-mentioned connection port 232 to adapt to the swing of the slider 23.

[0051] In some embodiments of the above-mentioned side cutting knife assembly 2, first limiting plates 222 are installed on both the upper and lower sides of the above-mentioned Y-axis chute 221 to prevent the slider 23 from falling out of the side of the Y-axis chute 221.

[0052] In some embodiments of the side cutter assembly 2, a second limit plate 223 is installed on the left and right sides of the Y-axis slide groove 221 to prevent the slider 23 from falling out from the end of the Y-axis slide groove 221; at the same time, the Y-axis cylinder 24 is installed on one of the second limit plates 223, and its cylinder joint 241 is passed through the second limit plate 223.

[0053] In some embodiments of the side cutter assembly 2, a heat insulation pad 10 is provided between the slider 23 and the side cutter 21, which is particularly suitable for the technical solution that the cutter assembly is provided with a thermocouple 6 and a heating rod 7 to prevent overheating of components other than the cutter. Similarly, the heat insulation pad is also applicable to the upper cutter assembly 3 and the lower cutter assembly 4.

[0054] In some embodiments of the side cutter assembly 2, the side cutter assembly 2 includes a first movable plate 27 for mounting the slide 22, a Y-axis screw rod 28 for driving the first movable plate 27, and a Y-axis motor 29 for driving the Y-axis screw rod 28. Thus, the Y-axis screw rod 28 is driven to rotate by the Y-axis motor 29 to drive the first movable plate 27 to move along the Y-axis, thereby driving the slide 22 to move along the Y-axis. Since the output stroke of the Y-axis cylinder 24 itself is fixed, the position of the slide 22 can be adjusted by the Y-axis motor 29 in cooperation with the Y-axis screw rod 28 to adjust the initial position of the side cutter 21, thereby adapting to copper bars of different sizes (widths), that is, the Y-axis motor 29 is responsible for adjusting the position of the side cutter 21, and the Y-axis cylinder 24 is responsible for providing power for the cutting action of the side cutter 21. Since the action of the cylinder is executed quickly, the requirements of flexibility and rapid production can be met at the same time.

[0055] Furthermore, the base of the side cutter assembly 2 is provided with a first slide rail 20 for slidingly cooperating with the first movable plate 27 , a screw fixing seat for installing the Y-axis screw 28 , and the like.

[0056] Meanwhile, a first screw nut 271 for threaded connection of the Y-axis screw 28 is installed on the first movable plate 27 .

[0057] refer to Figures 7-10 As shown, the upper cutter assembly 3 of the present invention: The upper cutter assembly 3 includes a longitudinal cutter 33 arranged along the X-axis direction, and the longitudinal cutter 33 moves synchronously with the upper cutter 31 to cut the heat shrink tubing on the upper surface of the copper busbar. By setting the longitudinal cutter 33, the upper surface of the heat shrink tubing can be divided into two parts, which makes it easier to peel the cut heat shrink tubing from the copper busbar.

[0058] Furthermore, the limiting block 51 is provided with a clearance groove 511 for avoiding the longitudinal cutting knife 33 .

[0059] The upper cutter assembly 3 includes an upper fixed seat 34 mounted on the machine table 1, a first Z-axis cylinder 35 and a second Z-axis cylinder 36 mounted on the side of the upper fixed seat 34, and a first lifting plate 37 driven by the first Z-axis cylinder 35; the upper cutter 31 and the longitudinal cutter 33 are both mounted on the first lifting plate 37, and the pressure rod 32 is mounted on the output end of the second Z-axis cylinder 36. In this embodiment, the pressure rod 32, the upper fixed seat 34, the first Z-axis cylinder 35, and the second Z-axis cylinder 36 are arranged on both sides of the first lifting plate 37 to ensure the symmetry and stability of the left and right structures.

[0060] Furthermore, the upper cutter assembly 3 includes an upper fixed block 38 mounted on the machine table 1 and located below the upper fixed seat 34. A slidably matched upper guide column 39 and an upper guide sleeve 30 are provided between the upper fixed block 38 and the first lifting plate 37 to guide the Z-axis movement of the first lifting plate 37 to improve the stability of the machine.

[0061] refer to Figures 11-12 As shown, the lower cutter assembly 4 of the present invention: The above-mentioned lower cutter assembly 4 includes a lower fixed seat 42 installed under the machine table 1, a third Z-axis cylinder 43 installed on the lower surface of the lower fixed seat 42, and a second lifting plate 44 movably fitted above the lower fixed seat 42 and driven by the third Z-axis cylinder 43; the above-mentioned lower cutter 41 is installed on the second lifting plate 44.

[0062] Furthermore, a floating joint 45 is provided between the output end of the third Z-axis cylinder 43 and the second lifting plate 44. The floating joint 45 can play a buffering role when the pressing rod 32 performs the pressing action, and allows the lower cutter 41 to fit the lower surface of the copper bar more closely.

[0063] At the same time, a lower guide column 46 and a lower guide sleeve 47 that are slidably matched are provided between the second lifting plate 44 and the lower fixed seat 42 to guide the Z-axis movement of the second lifting plate 44 and improve the stability of the machine.

[0064] refer to Figures 13-15 As shown, it is the fixed length component 5 of the present invention: The fixed-length component 5 includes a fixed-length base 52 installed on the machine table 1, an X-axis motor 53 installed on the fixed-length base 52, and a second movable plate 54 that is transmission-connected to the X-axis motor 53 and moves along the X-axis direction; the limit block 51 is installed on the second movable plate 54.

[0065] Furthermore, an X-axis lead screw 55 parallel to the X-axis motor 53 and a second slide rail 57 for the second moving plate 54 to slide thereon are provided on the fixed-length base 52. The second slide rail 57 is arranged in parallel with the X-axis lead screw 55 and can support the second moving plate 54 side by side. The X-axis lead screw 55 is driven by a belt 56 between the X-axis motor 53 and is threadedly connected to a second lead screw nut 541 under the second moving plate 54. The parallel position design can reduce the length of the fixed-length assembly 5. Through the cooperation of the X-axis motor 53 and the X-axis lead screw 55, the displacement of the second moving plate 54 can be accurately controlled, and then the position of the limit block 51 can be adjusted to meet the requirement of flexible adjustment for different sizes.

[0066] Secondly, the fixed-length assembly 5 includes an X-axis cylinder 58 installed on the second moving plate 54, and the limit block 51 is installed at the output end of the X-axis cylinder 58. Similar to the principle of the side cutting tool assembly 2, the fixed-length assembly 5 combines a double-drive structure of a motor, a lead screw, and a cylinder. It can use the motor and the lead screw to achieve precise size control, and at the same time use the quick action of the cylinder to achieve the avoidance of the limit block 51 during the cutting process (the limit block 51 does not need to hold the end of the copper bar after the copper bar is in place, and at this time the copper bar is fixed by the pressure rod 32).

[0067] Above, in each component, in order to detect the position of the moving parts to meet the automation requirements, the present invention can also set an optoelectronic sensor and its corresponding sensing part on the path of the corresponding parts to detect whether the parts move in place.

[0068] The working process of the present invention is roughly as follows: The copper bar to be cut is sent into the channel by a human or a robotic arm until the end of the copper bar abuts against the limit block 51. Then, the pressure rod 32 first presses down to firmly fix the copper bar on the cutting station 11, and it no longer moves or shakes. Before the cutting action, the thermocouple 6 and the heating rod 7 preheat the corresponding cutting tools. Then, the side cutting tool 21, the upper cutting tool 31, the longitudinal cutting tool 33, and the lower cutting tool 41 move synchronously towards the surface of the copper bar for thermal cutting. After the side cutting tool 21 contacts the heat shrinkable tube on the surface of the copper bar, it will swing under the action of the cylinder joint 241 and the slider 23 until the heat shrinkable tube at the corresponding position is cut off and completely fits the surface of the copper bar. After the cutting is completed, each cutting tool retracts, and the copper bar is taken away by a human or a robotic arm.

[0069] The above embodiments and diagrams do not limit the product form and style of the present invention. Any appropriate changes or modifications made by those of ordinary skill in the art shall be regarded as not departing from the patent scope of the present invention.

Claims

1. An apparatus for cutting heat-shrinkable sleeves of copper bars, characterized in that: It includes a machine platform, and a cutting station is arranged on the machine platform; A pair of symmetrically arranged side cutting knife assemblies are arranged in the left-right direction of the cutting station, and an upper cutting knife assembly and a lower cutting knife assembly are respectively arranged in the up-down direction; a channel for the copper bar to be cut to enter is formed among the side cutting knife assemblies, the upper cutting knife assembly and the lower cutting knife assembly, and a fixed-length assembly is arranged at the other end of the channel; Define the length direction of the channel as the X-axis, the horizontal direction perpendicular to the X-axis as the Y-axis, and the direction perpendicular to the XY plane as the Z-axis; the side cutting knife assembly is provided with a side cutting knife moving along the Y-axis; The upper cutting knife assembly is provided with an upper cutting knife and a pressure rod moving along the Z-axis; the lower cutting knife assembly is provided with a lower cutting knife moving along the Z-axis; the fixed-length assembly is provided with a limit block for adjusting the position along the X-axis to limit the length of the copper bar entering the channel.

2. The apparatus for cutting heat-shrinkable sleeves of copper bars according to claim 1, characterized in that: The side cutting knife assembly includes a sliding seat moving along the Y-axis, a slider slidably fitted along the Y-axis in the sliding seat, and a Y-axis cylinder installed at the end of the sliding seat; the side cutting knife is installed on the slider; the sliding seat is provided with a Y-axis sliding groove for the slider to slidably fit, shaft parts are arranged on the upper and lower surfaces of the slider to abut against the inner wall of the Y-axis sliding groove, and a connection port is arranged at the end of the slider; the cylinder joint of the Y-axis cylinder is movably fitted in the connection port to realize the transmission connection between the Y-axis cylinder and the slider.

3. The apparatus for cutting heat-shrinkable sleeves of copper bars according to claim 2, characterized in that: A round head pin and a spring are arranged between one of the upper and lower surfaces of the slider and the inner wall of the Y-axis sliding groove; the spring and the round head pin are sequentially embedded in a counterbore formed on the surface of the slider, and the round head pin protrudes from the surface of the slider under the action of the spring and abuts against the inner wall of the Y-axis sliding groove to drive the slider to reset.

4. The apparatus for cutting heat-shrinkable sleeves of copper bars according to claim 2, characterized in that: An arc surface protrudes from the inner wall of the connection port.

5. The apparatus for cutting heat-shrinkable sleeves of copper bars according to claim 2, characterized in that: First limit plates are installed on both the upper and lower sides of the Y-axis sliding groove, and second limit plates are installed on both the left and right sides thereof; the Y-axis cylinder is installed on one of the second limit plates, and the cylinder joint passes through the second limit plate.

6. The apparatus for cutting heat-shrinkable sleeves of copper bars according to claim 2, characterized in that: The side cutting knife assembly includes a first moving plate for installing the sliding seat, a Y-axis lead screw for driving the first moving plate, and a Y-axis motor for driving the Y-axis lead screw; a first slide rail for the first moving plate to slidably fit and a lead screw fixing seat for installing the Y-axis lead screw are arranged on the base of the side cutting knife assembly; a first lead screw nut for the Y-axis lead screw to be threadedly connected is installed on the first moving plate.

7. The apparatus for cutting heat-shrinkable sleeves of copper bars according to claim 1, characterized in that: The upper cutting tool assembly includes a longitudinal cutting tool arranged along the X-axis direction, and the longitudinal cutting tool moves synchronously with the upper cutting tool; a relief groove for avoiding the longitudinal cutting tool is provided on the limit block.

8. The equipment for cutting copper busbar heat shrinkable sleeves according to claim 1, characterized in that: The upper cutting tool assembly includes an upper fixing seat installed on the machine table, a first Z-axis cylinder and a second Z-axis cylinder installed on the side surface of the upper fixing seat, and a first lifting plate driven by the first Z-axis cylinder; The upper cutting tool is installed on the first lifting plate, and the pressing rod is installed at the output end of the second Z-axis cylinder.

9. The equipment for cutting copper busbar heat shrinkable sleeves according to claim 8, characterized in that: The upper cutting tool assembly includes an upper fixing block installed on the machine table and located below the upper fixing seat, and upper guide columns and upper guide sleeves in sliding fit are arranged between the upper fixing block and the first lifting plate.

10. The equipment for cutting copper busbar heat shrinkable sleeves according to claim 1, characterized in that: The lower cutting tool assembly includes a lower fixing seat installed below the machine table, a third Z-axis cylinder installed on the lower surface of the lower fixing seat, and a second lifting plate movably fitted above the lower fixing seat and driven by the third Z-axis cylinder; The lower cutting tool is installed on the second lifting plate.

11. The equipment for cutting copper busbar heat shrinkable sleeves according to claim 10, characterized in that: A floating joint is arranged between the output end of the third Z-axis cylinder and the second lifting plate; lower guide columns and lower guide sleeves in sliding fit are arranged between the second lifting plate and the lower fixing seat.

12. The equipment for cutting copper busbar heat shrinkable sleeves according to claim 1, characterized in that: The fixed-length component includes a fixed-length base installed on the machine table, an X-axis motor installed on the fixed-length base, and a second moving plate connected to the X-axis motor in transmission and moving along the X-axis direction; the limit block is installed on the second moving plate.

13. The equipment for cutting copper busbar heat shrinkable sleeves according to claim 12, characterized in that: An X-axis lead screw parallel to the X-axis motor is arranged on the fixed-length base, and a second slide rail for the second moving plate to slide fit is provided, and the second slide rail is arranged in parallel with the X-axis lead screw; the X-axis lead screw and the X-axis motor are driven by a belt, and are threadedly connected to a second lead screw nut below the second moving plate; the fixed-length component further includes an X-axis cylinder installed on the second moving plate, and the limit block is installed at the output end of the X-axis cylinder.

14. The equipment for cutting copper busbar heat shrinkable sleeves according to claim 1, characterized in that: An arc-shaped cutting edge is provided on the cutting edge of the side cutting tool.

15. The equipment for cutting copper busbar heat shrinkable sleeves according to claim 1, characterized in that: Thermocouples and heating rods are installed in the side cutting tool, the upper cutting tool and the lower cutting tool.

16. The equipment for cutting copper busbar heat shrinkable sleeves according to claim 1, characterized in that: A dust cover is provided on the surface of the machine table to cover the side cutting tool assembly, the upper cutting tool assembly, the lower cutting tool assembly and the constant length assembly, and an inlet for the copper busbar to enter is reserved; an operation panel is also installed on the machine table.

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