An automatic wire breaking mechanism for enameled wire processing

Abstract

The utility model discloses an automatic broken line mechanism for enameled wire processing relates to enameled wire processing technical field, including main part, guide mechanism, winding mechanism and broken line mechanism, the broken line mechanism includes broken line board, through groove, cutting knife and first transmission assembly, the broken line board is fixedly connected in the main part outer surface one side close to the main part, the through groove is established in the broken line board upper surface, the cutting knife is located the through groove upside, first transmission assembly is located the cutting knife upper surface.

Description

Technical Field

[0001] This utility model relates to the field of enameled wire processing technology, specifically to an automatic wire breaking mechanism for enameled wire processing. Background Technology

[0002] Enamelled wire is a conductive metal wire with an insulating varnish coating. It typically uses copper or aluminum as the conductor, and the insulation layer is made of polymer materials such as polyimide or polyester. It features excellent conductivity, high insulation strength, and good heat resistance, and is widely used in the manufacturing of windings for electromagnetic equipment such as motors, transformers, and inductors. It is a key basic component in the electronics and electrical industry.

[0003] Most enameled wire processing equipment commonly found on the market uses a winding device. However, most winding devices only have a single winding function. After completing the winding work to the preset length, workers need to use tools to cut the wound enameled wire. This process not only requires extra time to prepare the tools, but also requires careful control of the force and angle during the actual cutting process. A slight mistake may result in irregular breaks in the enameled wire. Utility Model Content

[0004] To address the problems mentioned in the background art, the purpose of this utility model is to provide an automatic wire cutting mechanism for enameled wire processing. This mechanism has the advantage of automatically cutting the enameled wire after winding, solving the problem that after completing the winding of a preset length, workers need to use tools to cut the wound enameled wire. This process not only requires extra time to prepare the tools, but also requires careful control of the force and angle during the actual cutting process, as slight carelessness may lead to irregular breaks in the enameled wire.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic wire breaking mechanism for enameled wire processing, comprising a main body, a guiding mechanism, and a winding mechanism, wherein the lower surface of the guiding mechanism is fixedly connected to the upper surface of the main body, the lower surface of the winding mechanism is fixedly connected to the upper surface of the main body, and a wire breaking mechanism is provided on the outer side of the winding mechanism; The wire breaking mechanism includes a wire breaking plate, a through groove, a cutter, and a first transmission assembly. The wire breaking plate is fixedly connected to the outer surface of the main body on the side closest to the main body. The through groove is opened on the upper surface of the wire breaking plate. The cutter is disposed on the upper side of the through groove. The first transmission assembly is disposed on the upper surface of the cutter.

[0006] In a preferred embodiment of the present invention, the first transmission assembly includes a connecting plate, a first toothed plate, and a first missing gear. The lower surface of the connecting plate is fixedly connected to the upper surface of the cutter, the right surface of the first toothed plate is fixedly connected to the left surface of the connecting plate, and the outer surface of the first missing gear and the outer surface of the first toothed plate are in a meshing relationship.

[0007] As a preferred embodiment of the present invention, a first sliding groove is provided on the left surface of the main body, the inner wall of the first sliding groove is slidably connected to the outer surface of the connecting plate, a first spring is provided on the inner wall of the first sliding groove, the upper end face of the first spring is fixedly connected to the lower surface of the connecting plate, and the lower end face of the first spring is fixedly connected to the inner wall of the first sliding groove.

[0008] In a preferred embodiment of this invention, a drive assembly is provided on the inner wall of the first missing gear. The drive assembly includes a first connecting rod, a first fixing member, a pulley, and a servo motor. The outer surface of the first connecting rod is fixedly connected to the inner wall of the first missing gear. Two first fixing members are provided, and the inner walls of the two first fixing members are rotatably connected to the outer surface of the first connecting rod through bearings. The right surface of the first fixing member is fixedly connected to the left surface of the main body. Two pulleys are provided, and the two pulleys are connected by belt drive. The inner wall of the upper pulley is fixedly connected to the outer surface of the first connecting rod. The output end of the servo motor is fixedly connected to the front end face of the first connecting rod.

[0009] As a preferred embodiment of this utility model, a fixing sleeve is provided on the outer surface of the servo motor, the inner wall of the fixing sleeve is fixedly connected to the outer surface of the servo motor, and the right surface of the fixing sleeve is fixedly connected to the left surface of the main body.

[0010] In a preferred embodiment of this invention, a second transmission assembly is provided on the front side of the lower pulley. The second transmission assembly includes a second connecting rod, a second fixing member, a second missing gear, and a second toothed plate. The outer surface of the second connecting rod is fixedly connected to the inner wall of the lower pulley. Two second fixing members are provided, and the inner walls of the two second fixing members are rotatably connected to the outer surface of the second connecting rod through bearings. The right surface of the second fixing member is fixedly connected to the left surface of the main body. The inner wall of the second missing gear is fixedly connected to the outer surface of the second connecting rod. The outer surface of the second toothed plate and the outer surface of the second missing gear are in a meshing relationship.

[0011] In a preferred embodiment of this invention, an extrusion assembly is provided on the right side of the second toothed plate. The extrusion assembly includes a second slide groove, a sliding plate, an extruder, telescopic columns, and a second spring. The second slide groove is formed on the left surface of the main body. The outer surface of the sliding plate is slidably connected to the inner wall of the second slide groove. The left surface of the sliding plate is fixedly connected to the right surface of the second toothed plate. The left surface of the extruder is fixedly connected to the right surface of the sliding plate. Several telescopic columns are provided, with the upper end face of several telescopic columns fixedly connected to the lower surface of the extruder and the lower end face of the telescopic columns fixedly connected to the upper surface of the main body. Several second springs are provided, with the upper end face of several second springs fixedly connected to the lower surface of the extruder and the lower end face of the second spring fixedly connected to the upper surface of the main body.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model solves the problem that after completing the winding process to a preset length, workers need to use tools to cut the enameled wire. This process not only requires extra time to prepare the tools, but also requires careful control of the force and angle during the actual cutting process. Slight carelessness may result in irregular breaks in the enameled wire. Through the meshing transmission between the first gear and the toothed plate, the rotational motion after winding is converted into the linear downward movement of the cutter, realizing automatic cutting without manual intervention, significantly reducing operation time and improving the continuous operation capability of the production line.

[0013] 2. By setting up a second transmission component and a pressing component, the present invention can make the enameled wire more compact after winding by the design of the pressing component, thus preventing the enameled wire from becoming loose after winding.

[0014] 3. This utility model, by setting up a drive component and a fixing sleeve, connects the first transmission component and the second transmission component through the design of the drive component, so as to realize that one drive source drives two different structures to operate. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the wire breaking mechanism; Figure 3 A three-dimensional structural diagram of the drive assembly, the fixed sleeve, and the second transmission assembly; Figure 4 This is an exploded schematic diagram of the first chute, the first spring, and the extrusion assembly.

[0016] In the diagram: 1. Main body; 2. Guiding mechanism; 3. Winding mechanism; 4. Wire breaking mechanism; 41. Wire breaking plate; 42. Through groove; 43. Cutting blade; 44. First transmission assembly; 441. Connecting plate; 442. First toothed plate; 443. First missing gear; 5. First slide groove; 6. First spring; 7. Drive assembly; 71. First connecting rod; 72. First fixing piece; 73. Pulley; 74. Servo motor; 8. Fixing sleeve; 9. Second transmission assembly; 91. Second connecting rod; 92. Second fixing piece; 93. Second missing gear; 94. Second toothed plate; 10. Extrusion assembly; 101. Second slide groove; 102. Sliding plate; 103. Extrusion piece; 104. Telescopic column; 105. Second spring. Detailed Implementation

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0018] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0019] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0020] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0021] Example 1 Reference Figure 1-4 This is the first embodiment of the present utility model, which provides an automatic wire breaking mechanism for enameled wire processing, including a main body 1, a guiding mechanism 2 and a winding mechanism 3. The lower surface of the guiding mechanism 2 is fixedly connected to the upper surface of the main body 1, the lower surface of the winding mechanism 3 is fixedly connected to the upper surface of the main body 1, and a wire breaking mechanism 4 is provided on the outside of the winding mechanism 3. The wire breaking mechanism 4 includes a wire breaking plate 41, a through groove 42, a cutter 43 and a first transmission assembly 44. The wire breaking plate 41 is fixedly connected to the outer surface of the main body 1 on the side close to the main body 1. The through groove 42 is opened on the upper surface of the wire breaking plate 41. The cutter 43 is disposed on the upper side of the through groove 42. The first transmission assembly 44 is disposed on the upper surface of the cutter 43. The first transmission assembly 44 includes a connecting plate 441, a first toothed plate 442, and a first missing gear 443. The lower surface of the connecting plate 441 is fixedly connected to the upper surface of the cutter 43, the right surface of the first toothed plate 442 is fixedly connected to the left surface of the connecting plate 441, and the outer surface of the first missing gear 443 and the outer surface of the first toothed plate 442 are in a meshing relationship. The left surface of the main body 1 is provided with a first sliding groove 5. The inner wall of the first sliding groove 5 is slidably connected to the outer surface of the connecting plate 441. A first spring 6 is provided on the inner wall of the first sliding groove 5. The upper end face of the first spring 6 is fixedly connected to the lower surface of the connecting plate 441, and the lower end face of the first spring 6 is fixedly connected to the inner wall of the first sliding groove 5.

[0022] Specifically, through the meshing transmission between the first gear 443 and the toothed plate, the rotational motion after winding is converted into the linear downward movement of the cutter 43, realizing automatic cutting without manual intervention, significantly reducing operation time and improving the continuous operation capability of the production line.

[0023] Furthermore, after the enameled wire is wound up, it is rotated clockwise by the first notched gear 443. The first notched gear 443 meshes with the first toothed plate 442, causing the first toothed plate 442 to move downward. The first toothed plate 442 then drives the connecting plate 441 to move downward along the inner wall of the first slide groove 5. The downward movement of the connecting plate 441 can compress the first spring 6, causing the first spring 6 to generate elastic force. At the same time, the connecting plate 441 drives the cutter 43 to move downward together, so that the cutter 43 cuts the enameled wire. When the cutter 43 enters the through groove 42, the enameled wire is also broken.

[0024] Example 2 In the second embodiment of this utility model, a second transmission assembly 9 is provided on the front side of the lower pulley 73. The second transmission assembly 9 includes a second connecting rod 91, a second fixing member 92, a second missing gear 93, and a second toothed plate 94. The outer surface of the second connecting rod 91 is fixedly connected to the inner wall of the lower pulley 73. Two second fixing members 92 are provided. The inner walls of the two second fixing members 92 are rotatably connected to the outer surface of the second connecting rod 91 through bearings. The right surface of the second fixing member 92 is fixedly connected to the left surface of the main body 1. The inner wall of the second missing gear 93 is fixedly connected to the outer surface of the second connecting rod 91. The outer surface of the second toothed plate 94 and the outer surface of the second missing gear 93 are in a meshing relationship. A pressing assembly 10 is provided on the right side of the second toothed plate 94. The pressing assembly 10 includes a second slide groove 101, a sliding plate 102, an extrusion member 103, a telescopic column 104, and a second spring 105. The second slide groove 101 is opened on the left surface of the main body 1. The outer surface of the sliding plate 102 is slidably connected to the inner wall of the second slide groove 101. The left surface of the sliding plate 102 is fixedly connected to the right surface of the second toothed plate 94. The left surface of the extrusion member 103 is fixedly connected to the right surface of the sliding plate 102. Several telescopic columns 104 are provided. The upper end face of several telescopic columns 104 is fixedly connected to the lower surface of the extrusion member 103. The lower end face of the telescopic columns 104 is fixedly connected to the upper surface of the main body 1. Several second springs 105 are provided. The upper end face of several second springs 105 is fixedly connected to the lower surface of the extrusion member 103. The lower end face of the second springs 105 is fixedly connected to the upper surface of the main body 1.

[0025] Specifically, through the design of the extrusion component 10, the enameled wires can be made more compact after winding, preventing the enameled wires from becoming loose after winding.

[0026] Furthermore, by rotating the second connecting rod 91 clockwise, the second connecting rod 91 drives the second missing gear 93, causing the second missing gear 93 to mesh with the second toothed plate 94. The second toothed plate 94 is forced to move downward, which in turn drives the sliding plate 102 to move downward along the inner wall of the second slide groove 101. The sliding plate 102 drives the extruder 103 to move downward, causing the extruder 103 to press the telescopic column 104 and the second spring 105. The second spring 105 generates elastic force. At the same time, the extruder 103 no longer contacts the wound enameled wire, making it easier for workers to remove it.

[0027] Example 3 In the third embodiment of this utility model, a drive assembly 7 is provided on the inner wall of the first missing gear 443. The drive assembly 7 includes a first connecting rod 71, a first fixing member 72, a pulley 73, and a servo motor 74. The outer surface of the first connecting rod 71 is fixedly connected to the inner wall of the first missing gear 443. Two first fixing members 72 are provided. The inner walls of the two first fixing members 72 are rotatably connected to the outer surface of the first connecting rod 71 through bearings. The right surface of the first fixing member 72 is fixedly connected to the left surface of the main body 1. Two pulleys 73 are provided. The two pulleys 73 are connected by belt drive. The inner wall of the upper pulley 73 is fixedly connected to the outer surface of the first connecting rod 71. The output end of the servo motor 74 is fixedly connected to the front end face of the first connecting rod 71. A fixing sleeve 8 is provided on the outer surface of the servo motor 74. The inner wall of the fixing sleeve 8 is fixedly connected to the outer surface of the servo motor 74. The right surface of the fixing sleeve 8 is fixedly connected to the left surface of the main body 1.

[0028] Specifically, through the design of the drive component 7, the first transmission component 44 and the second transmission component 9 are connected to each other, so that one drive source drives two different structures to operate.

[0029] Furthermore, the servo motor 74 drives the first connecting rod 71 to rotate clockwise. The first connecting rod 71 can drive the pulley 73 on the outer surface and the first missing gear 443 to rotate clockwise together, so that the first missing gear 443 meshes with the first toothed plate 442. The rotation of the pulley 73 drives the second connecting rod 91 inside the second transmission assembly 9 to rotate, thus indirectly connecting the first connecting rod 71 and the second connecting rod 91.

[0030] Working principle: When the enameled wire is wound up, the outer surface of the extruder 103 is always in close contact with the outer surface of the enameled wire. After the enameled wire is wound up, the servo motor 74 drives the first connecting rod 71 to rotate clockwise. The first connecting rod 71 drives the pulley 73 and the first gear 443 on the outer surface to rotate clockwise together, so that the first gear 443 meshes with the first toothed plate 442. The first toothed plate 442 drives the connecting plate 441 to move down along the inner wall of the first slide groove 5. The downward movement of the connecting plate 441 can compress the first spring 6, so that the first spring 6 generates elastic force. At the same time, the connecting plate 441 drives the cutter 43 to move down together, so that the cutter 43 cuts the enameled wire. When the cutter 43 enters the through groove 42, the enameled wire is also broken. While the pulley 73 is rotating, it can drive the second connecting rod 91 to rotate clockwise. As the needle rotates, the second connecting rod 91 drives the second missing gear 93, causing the second missing gear 93 to mesh with the second toothed plate 94. The second toothed plate 94 is forced to move downward, which in turn drives the sliding plate 102 to move downward along the inner wall of the second slide groove 101. The sliding plate 102 drives the extruder 103 to move downward, causing the extruder 103 to press the telescopic column 104 and the second spring 105. The second spring 105 generates elastic force. At the same time, the extruder 103 is no longer in contact with the wound enameled wire, making it easier for the worker to remove it. When the first missing gear 443 is no longer meshing with the first toothed plate 442 and the second missing gear 93 is no longer meshing with the second toothed plate 94, the first spring 6 releases its elastic force, indirectly pushing the cutter 43 to move back. The second spring 105 also releases its elastic force, pushing the extruder 103 to move back.

[0031] In summary, the cooperation of the wire cutting mechanism 4, the first slide 5, the drive assembly 7, the fixing sleeve 8, the second transmission assembly 9, and the extrusion assembly 10 solves the problem that after completing the winding of the preset length, workers need to use tools to cut the wound enameled wire. This process not only requires extra time to prepare the tools, but also requires careful control of the force and angle during the actual cutting process, as slight carelessness may lead to irregular breaks in the enameled wire.

[0032] The motors, gears, and springs used in this application can be additionally equipped with protective measures that are common knowledge in the field of this technology under different usage environments, including but not limited to the following methods, such as protective covers for equipment protection, dustproof nets for equipment dust prevention, and sealing components or waterproof coatings for equipment waterproofing, which are commonly used by those skilled in the art.

[0033] It should be noted that (motor, gear and spring) are existing devices or equipment, or devices or equipment that can be implemented by existing technology. The power supply, connection method, usage method, power source, fixing method, installation method, control method, etc. of the device, as well as the materials of each accessory and the selection of various parameters are common knowledge to those skilled in the art, and therefore will not be described in detail in this application document.

[0034] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0035] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0036] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An automatic wire breaking mechanism for enameled wire processing, characterized by: It includes a main body (1), a guiding mechanism (2) and a winding mechanism (3). The lower surface of the guiding mechanism (2) is fixedly connected to the upper surface of the main body (1), and the lower surface of the winding mechanism (3) is fixedly connected to the upper surface of the main body (1). A wire breaking mechanism (4) is provided on the outside of the winding mechanism (3). The wire breaking mechanism (4) includes a wire breaking plate (41), a through groove (42), a cutter (43), and a first transmission assembly (44). The wire breaking plate (41) is fixedly connected to the outer surface of the main body (1) on the side close to the main body (1). The through groove (42) is opened on the upper surface of the wire breaking plate (41). The cutter (43) is disposed on the upper side of the through groove (42). The first transmission assembly (44) is disposed on the upper surface of the cutter (43).

2. The automatic wire breaking mechanism for an enameled wire processing according to claim 1, characterized in that: The first transmission assembly (44) includes a connecting plate (441), a first toothed plate (442), and a first missing gear (443). The lower surface of the connecting plate (441) is fixedly connected to the upper surface of the cutter (43), the right surface of the first toothed plate (442) is fixedly connected to the left surface of the connecting plate (441), and the outer surface of the first missing gear (443) and the outer surface of the first toothed plate (442) are in a meshing relationship.

3. The automatic wire breaking mechanism for an enameled wire processing according to claim 2, characterized in that: The main body (1) has a first groove (5) on its left surface. The inner wall of the first groove (5) is slidably connected to the outer surface of the connecting plate (441). The inner wall of the first groove (5) is provided with a first spring (6). The upper end face of the first spring (6) is fixedly connected to the lower surface of the connecting plate (441), and the lower end face of the first spring (6) is fixedly connected to the inner wall of the first groove (5).

4. The automatic wire breaking mechanism for an enameled wire processing according to claim 2, characterized in that: The inner wall of the first missing gear (443) is provided with a drive assembly (7). The drive assembly (7) includes a first connecting rod (71), a first fixing member (72), a pulley (73) and a servo motor (74). The outer surface of the first connecting rod (71) is fixedly connected to the inner wall of the first missing gear (443). There are two first fixing members (72). The inner walls of the two first fixing members (72) are rotatably connected to the outer surface of the first connecting rod (71) through bearings. The right surface of the first fixing member (72) is fixedly connected to the left surface of the main body (1). There are two pulleys (73). The two pulleys (73) are connected by belt drive. The inner wall of the upper pulley (73) is fixedly connected to the outer surface of the first connecting rod (71). The output end of the servo motor (74) is fixedly connected to the front end face of the first connecting rod (71).

5. The automatic wire breaking mechanism for an enameled wire processing apparatus according to claim 4, characterized in that: The outer surface of the servo motor (74) is provided with a fixing sleeve (8), the inner wall of the fixing sleeve (8) is fixedly connected to the outer surface of the servo motor (74), and the right surface of the fixing sleeve (8) is fixedly connected to the left surface of the main body (1).

6. The automatic wire breaking mechanism for an enameled wire processing according to claim 4, characterized in that: A second transmission assembly (9) is provided on the front side of the lower pulley (73). The second transmission assembly (9) includes a second connecting rod (91), a second fixing member (92), a second missing gear (93), and a second toothed plate (94). The outer surface of the second connecting rod (91) is fixedly connected to the inner wall of the lower pulley (73). There are two second fixing members (92). The inner walls of the two second fixing members (92) are rotatably connected to the outer surface of the second connecting rod (91) through bearings. The right surface of the second fixing member (92) is fixedly connected to the left surface of the main body (1). The inner wall of the second missing gear (93) is fixedly connected to the outer surface of the second connecting rod (91). The outer surface of the second toothed plate (94) and the outer surface of the second missing gear (93) are in a meshing relationship.

7. The automatic wire breaking mechanism for an enameled wire processing apparatus according to claim 6, characterized in that: An extrusion assembly (10) is provided on the right side of the second toothed plate (94). The extrusion assembly (10) includes a second slide groove (101), a sliding plate (102), an extruder (103), a telescopic column (104), and a second spring (105). The second slide groove (101) is opened on the left surface of the main body (1). The outer surface of the sliding plate (102) is slidably connected to the inner wall of the second slide groove (101). The left surface of the sliding plate (102) is fixedly connected to the right surface of the second toothed plate (94). The left surface of the extruder (103) is fixedly connected to the right surface of the second toothed plate (94). The upper surface of the telescopic column (104) is fixedly connected to the right surface of the sliding plate (102). Several telescopic columns (104) are provided. The upper surface of several telescopic columns (104) is fixedly connected to the lower surface of the extrusion piece (103). The lower surface of the telescopic column (104) is fixedly connected to the upper surface of the main body (1). Several second springs (105) are provided. The upper surface of several second springs (105) is fixedly connected to the lower surface of the extrusion piece (103). The lower surface of the second springs (105) is fixedly connected to the upper surface of the main body (1).

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