A device for separating threads

Abstract

The utility model provides a kind of device for separating, belongs to embroidery thread production technical field;It includes support frame, separating board and separating block;Separating board is installed on support frame, and a plurality of mounting holes are arranged on separating board;Separating block is movably installed in mounting hole;Wherein, separating block includes separating ring body and telescopic device;Separating ring body is arranged in mounting hole;Telescopic device is arranged at the end of separating ring body, to limit separating ring body in mounting hole;When the end of separating ring body is inserted into mounting hole, telescopic device will contract, when telescopic device passes through mounting hole, telescopic device will automatically extend, so that separating ring body can be clamped in mounting hole, this structure does not need to set up mounting cavity in each mounting hole, convenient to operate when using, and it is also relatively simple when producing, without paying too much cost.

Description

Technical Field

[0001] This utility model belongs to the field of embroidery thread production technology, and more specifically, it relates to a twisting device for embroidery thread production. Background Technology

[0002] In embroidery (especially traditional Suzhou embroidery, Hunan embroidery and other fine embroidery styles) and textile crafts, "embroidery thread splitting" is a key pre-processing step, which means processing the embroidery thread from the dyeing factory into a finished product that can be used later.

[0003] Currently, Chinese Patent Publication No. CN222631670U discloses a twisting device for embroidery thread production. This utility model can fix the twisting hole block by inserting a fixed rod with an inclined side into a fixed groove. When using the device, the twisting hole block cannot be loosened by accidentally touching the handle or the ring plate, ensuring the stability of the twisting hole block during installation and use. When it is necessary to replace it, simply insert an iron sheet or other sheet-like object into the adjustment groove and squeeze the inclined surface of the fixed rod to make it leave the fixed groove, and the twisting hole block can be easily removed, which is very convenient. However, this utility model still has defects in use: the support frame cannot slide, and when it is necessary to move this device, it can only be moved by hand. On the other hand, the installation of the ring plate requires opening an installation cavity in the installation hole of the twisting plate, which is extremely cumbersome in the production process.

[0004] Based on the above problems, the applicant applies to design a twisting device for embroidery thread production. Utility Model Content

[0005] The purpose of this utility model is to provide a twisting device for embroidery thread production, so as to solve the technical problems of inconvenient movement of existing twisting devices and the very complicated forming of twisting plates.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A twisting device for embroidery thread production is provided, comprising a support frame, a twisting plate, and a twisting block; the twisting plate is mounted on the support frame, and a plurality of mounting holes are arranged on the twisting plate; the twisting block is movably mounted within the mounting holes; wherein, the twisting block includes a twisting ring and a telescopic device; the twisting ring is disposed within the mounting holes; the telescopic device is disposed at the end of the twisting ring to limit the twisting ring within the mounting holes.

[0007] In one possible implementation, based on the above technical solutions, the end of the twisted ring body is provided with a mounting groove, the telescopic device is installed in the mounting groove, the telescopic device includes a mounting cylinder, an elastic body and a telescopic column, the mounting cylinder is installed in the mounting groove, one end of the telescopic column is movably disposed in the mounting cylinder, and the elastic body is disposed between the bottom wall of the mounting cylinder and the telescopic column.

[0008] In one possible implementation, based on the above technical solutions, the end of the telescopic column is provided with a ball, and the side of the ball facing the twisting ring is provided with a baffle to abut against the twisting plate.

[0009] In one possible implementation, based on the above technical solutions, the end of the twisted ring body is provided with a pushing section, and the pushing section is provided with a pushing ring for pushing the telescopic column into the mounting cylinder.

[0010] In one possible implementation, based on the above technical solutions, the end of the push ring is provided with an arc surface.

[0011] In one possible implementation, based on the above technical solutions, the other end of the twisted ring body is provided with a retaining ring to cooperate with the telescopic device so that the twisted ring body is limited within the mounting hole.

[0012] In one possible implementation, based on the above technical solutions, the support frame includes a first bracket and a second bracket. Both the first bracket and the second bracket are provided with a movable groove. A roller assembly is provided in the movable groove. The roller assembly includes a wheel frame and a rotating wheel. The wheel frame is movably disposed in the movable groove, and the rotating wheel is mounted on the wheel frame.

[0013] In one possible implementation, based on the above technical solutions, both the first bracket and the second bracket have slots on their side walls. The slots include a first slot and a second slot. A rotating block is hinged to the end of the wheel frame, and a torsion spring is provided on the hinge shaft to realize the rotation of the rotating block. A connecting shaft connects the rotating block in the first bracket and the rotating block in the second bracket, and the connecting shaft is limited to the first slot or the second slot.

[0014] In one possible implementation, based on the above technical solutions, the side walls of both the first bracket and the second bracket are provided with positioning holes, and a mounting mechanism is provided in the positioning holes, with the twisting plate disposed on the mounting mechanism.

[0015] In one possible implementation, based on the above technical solutions, the card loading mechanism includes a first card group, a second card group, and a connecting plate. The first card group and the second card group are connected by the connecting plate. The first card group includes a pin, a first plate, a second plate, and a third plate. The pin is located on one side of the first plate. The first plate and the second plate are connected, and the second plate and the third plate are connected. The first plate, the second plate, and the third plate form a receiving cavity. The first plate and the second plate are provided with first card holes, and the two sides of the twisted plate are provided with second card holes. Card pins are inserted into the first card holes and the second card holes.

[0016] The beneficial effects of the slitting device for embroidery thread production provided by this utility model are as follows: Compared with the prior art, the slitting device provided by this utility model includes a support frame, a slitting plate, and a slitting block. The slitting plate is disposed on the support frame, and the slitting block is disposed in the mounting hole of the slitting plate. The slitting block includes a slitting ring body and a telescopic device. The slitting ring body is disposed in the mounting hole, and the telescopic device is disposed at the end of the slitting ring body. When the end of the slitting ring body is inserted into the mounting hole, the telescopic device retracts. When the telescopic device passes through the mounting hole, the telescopic device automatically extends, thereby locking the slitting ring body in the mounting hole. This structure does not require opening a mounting cavity in each mounting hole, and it is convenient to operate during use and relatively simple to produce, without incurring too much cost. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the slitting device for embroidery thread production provided in this embodiment of the utility model; Figure 2 Another perspective structural schematic diagram of the embroidery thread twisting device provided in an embodiment of this utility model; Figure 3 A schematic diagram of the telescopic device of the embroidery thread twisting device provided in this embodiment of the utility model; Figure 4 A cross-sectional view of the telescopic device of the embroidery thread twisting device provided in an embodiment of this utility model; Figure 5 An exploded view of the roller assembly of the embroidery thread production twisting device provided in this embodiment of the utility model, when installed on the first support; Figure 6 A schematic diagram of the structure of the first support of the embroidery thread twisting device provided in this embodiment of the utility model; Figure 7 A schematic diagram of the clamping mechanism of the embroidery thread production twisting device provided in this embodiment of the utility model; Figure 8 A schematic diagram of the structure of the twisting plate of the twisting device for embroidery thread production provided in this embodiment of the utility model.

[0019] The labels for the attached figures are as follows: 10. Support frame; 11. First bracket; 111. Moving slot; 112. First bayonet; 113. Second bayonet; 114. Positioning hole; 12. Second bracket; 20. Twisting plate; 21. Mounting hole; 22. Second locking hole; 30. Twisting block; 31. Twisting ring body; 311. Mounting groove; 312. Push section; 313. Push ring; 314. Retaining ring; 3131. Arc surface; 32. Telescopic device; 321. Mounting cylinder; 322. Elastomer; 323. Telescopic column; 3231. Sphere; 3232. Stand; 40. Roller assembly; 41. Wheel frame; 411. Rotating block; 42. Rotating wheel; 43. Coupling shaft; 50. Mounting mechanism; 51. First deck; 511. Insert pillar; 512. First plate; 513. Second plate; 514. Third plate; 515. First card slot; 52. Second card group; 53. Connecting plate. Detailed Implementation

[0020] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are only a part of the embodiments of this application, not all of them. The specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] It should be further explained that the accompanying drawings and embodiments of this utility model mainly describe the concept of this utility model. Based on this concept, some specific forms and settings of connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, under the premise that those skilled in the art understand the concept of this utility model, they can implement the above-mentioned specific forms and settings in a well-known manner.

[0022] When a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0023] The directional terms "inner" and "outer" refer to the inner and outer sides relative to the outline of each component itself. The terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, and the spatial relative descriptions used herein will be interpreted accordingly.

[0025] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, and "several" means one or more, unless otherwise explicitly specified.

[0026] The present invention provides a twisting device for embroidery thread production.

[0027] like Figures 1 to 8 As shown, this utility model provides a twisting device for embroidery thread production, including a support frame 10, a twisting plate 20, and a twisting block 30; the twisting plate 20 is mounted on the support frame 10, and a plurality of mounting holes 21 are arranged on the twisting plate 20; the twisting block 30 is movably mounted in the mounting holes 21; wherein, the twisting block 30 includes a twisting ring body 31 and a telescopic device 32; the twisting ring body 31 is disposed in the mounting hole 21; the telescopic device 32 is disposed at the end of the twisting ring body 31, and is used to limit the twisting ring body 31 in the mounting hole 21.

[0028] This utility model provides a twisting device for embroidery thread production. Compared with the prior art, the twisting device provided by this utility model includes a support frame 10, a twisting plate 20, and a twisting block 30. The twisting plate 20 is disposed on the support frame 10, and the twisting block 30 is disposed in the mounting hole 21 of the twisting plate 20. The twisting block 30 includes a twisting ring body 31 and a telescopic device 32. The twisting ring body 31 is disposed in the mounting hole 21, and the telescopic device 32 is disposed at the end of the twisting ring body 31. When the end of the twisting ring body 31 is inserted into the mounting hole 21, the telescopic device 32 will retract. When the telescopic device 32 passes through the mounting hole 21, the telescopic device 32 will automatically extend, thereby locking the twisting ring body 31 in the mounting hole 21. This structure does not require opening a mounting cavity in each mounting hole 21, making it convenient to operate during use and relatively simple to produce, without incurring too much cost.

[0029] like Figure 3 and Figure 4 As shown in the embodiment of the present invention, in a specific implementation of the embroidery thread twisting device, the end of the twisting ring 31 is provided with a mounting groove 311, and the telescopic device 32 is installed in the mounting groove 311. The telescopic device 32 includes a mounting cylinder 321, an elastic body 322 and a telescopic column 323. The mounting cylinder 321 is installed in the mounting groove 311 and can be connected by adhesive, snap-fit ​​or threaded connection. One end of the telescopic column 323 is movably disposed in the mounting cylinder 321. The elastic body 322 is disposed between the bottom wall of the mounting cylinder 321 and the telescopic column 323. The elastic body 322 is a spring.

[0030] Specifically, when it is necessary to lock the twisted ring 31 into the mounting hole 21, the end of the twisted ring 31 with the mounting groove 311 is inserted into the mounting hole 21. At this time, the top of the telescopic column 323 contacts the hole wall of the mounting hole 21 and is pressed into the mounting cylinder 321. When the end of the twisted ring 31 passes through the mounting hole 21 and the telescopic column 323 comes out from the mounting hole 21, the telescopic column 323 will pop out under the action of the elastic body 322, thereby locking the twisted ring 31 into the mounting groove 311.

[0031] like Figure 3 and Figure 4 As shown in the embodiment of the present invention, in a specific implementation of the embroidery thread twisting device, the end of the telescopic column 323 is provided with a ball 3231, and a baffle 3232 is provided on the side of the ball 3231 facing the twisting ring 31 to abut against the twisting plate 20. It should be noted that in order to ensure the stability of the twisting ring 31 in the mounting groove 311, a baffle 3232 is provided on the side of the ball 3231 at the end of the telescopic column 323. When the telescopic column 323 extends, the baffle 3232 abuts against the side wall of the twisting plate 20, thereby making the twisting ring 31 stably stuck in the mounting groove 311.

[0032] like Figure 3 As shown in the embodiment of the present invention, in a specific implementation of the embroidery thread splitting device, the end of the splitting ring 31 is provided with a pushing section 312, and a push ring 313 is provided on the pushing section 312 to push the telescopic column 323 into the mounting cylinder 321. The connection method can be that the pushing section 312 is threaded, and the push ring 313 is threadedly connected to the pushing section 312. Here, when the splitting ring 31 is damaged and needs to be replaced, the splitting ring 31 needs to be removed. At this time, the push ring 313 is moved, and the push ring 313 can contact the telescopic column 323, thereby pressing the telescopic column 323 into the mounting cylinder 321. Then, the splitting ring 31 can be removed by pulling it outward.

[0033] like Figure 4 As shown in the embodiment of the present invention, in a specific implementation of the embroidery thread twisting device, the end of the push ring 313 is provided with an arc surface 3131. By setting the push ring 313 near the telescopic column 323 as an arc surface 3131, the push ring 313 can more easily squeeze the ball 3231 when it comes into contact with the ball 3231 on the telescopic column 323, thereby achieving the purpose of pressing the ball 3231 into the mounting cylinder 321.

[0034] like Figure 3 and Figure 4 As shown in the embodiment of the present invention, in a specific embodiment of the embroidery thread production splitting device, the other end of the splitting ring 31 is provided with a retaining ring 314, which is used to cooperate with the telescopic device 32 to limit the splitting ring 31 within the mounting hole 21.

[0035] like Figure 1 , Figure 5 and Figure 6 As shown in the embodiment of the present invention, in a specific embodiment of the embroidery thread production twisting device, the support frame 10 includes a first support 11 and a second support 12. The first support 11 and the second support 12 are both provided with a movable groove 111. The movable groove 111 is provided with a roller assembly 40. The roller assembly 40 includes a wheel frame 41 and a rotating wheel 42. The wheel frame 41 is movably disposed in the movable groove 111, and the rotating wheel 42 is mounted on the wheel frame 41.

[0036] In addition, during the actual use of the twisting device, it is often necessary to adjust its position. Therefore, a movable groove 111 is opened in the first bracket 11 and the second bracket 12, and a roller assembly 40 is movably arranged in the movable groove 111. When movement is required, the first bracket 11 and the second bracket 12 are lifted to expose the rotating wheel 42. When the first bracket 11 and the second bracket 12 are lifted a set distance, the first bracket 11 and the second bracket 12 can be released. The first bracket 11 and the second bracket 12 are pushed on the roller assembly 40, which can then push the twisting device to complete the displacement.

[0037] like Figure 5 As shown in the embodiment of the present invention, in a specific embodiment of the embroidery thread production twisting device, the side walls of the first bracket 11 and the second bracket 12 are provided with slots, including a first slot 112 and a second slot 113. The end of the wheel frame 41 is hinged to a rotating block 411, and a torsion spring (not shown in the figure) is provided on the hinge shaft to realize the rotation of the rotating block 411. A connecting shaft 43 is connected between the rotating block 411 in the first bracket 11 and the rotating block 411 in the second bracket 12. The connecting shaft 43 is threadedly connected to the rotating block 411 and is limited to the first slot 112 or the second slot 113.

[0038] Specifically, when no displacement is required, the roller assembly 40 is entirely located within the moving groove 111, and the connecting shaft 43 between the two roller assemblies 40 is engaged in the first latch 112. When displacement is required, the first bracket 11 and the second bracket 12 are lifted, and the first bracket 11 and the second bracket 12 move upwards while the connecting shaft 43 remains stationary. As they continue to move upwards, the connecting shaft 43 reaches the position of the second latch 113. Under the action of the torsion spring, the connecting shaft 43 rotates into the second latch 113. At this point, the first bracket 11 and the second bracket 12 can be released, and the first bracket 11 and the second bracket 12 will fall onto the connecting shaft 43.

[0039] like Figure 5 and Figure 7 As shown in the embodiment of the present utility model, in a specific embodiment of the embroidery thread production twisting device, the side walls of the first bracket 11 and the second bracket 12 are provided with positioning holes 114, and the positioning holes 114 are provided with a mounting mechanism 50, and the twisting plate 20 is provided on the mounting mechanism 50.

[0040] like Figure 7 and Figure 8 As shown in the embodiment of the present invention, in a specific implementation of the embroidery thread production twisting device, the clamping mechanism 50 includes a first clamping group 51, a second clamping group 52, and a connecting plate 53. The first clamping group 51 and the second clamping group 52 are connected by the connecting plate 53. The first clamping group 51 includes a pin 511, a first plate 512, a second plate 513, and a third plate 514. The pin 511 is located on one side of the first plate 512. The first plate 512 and the second plate 513 are connected. The second plate 513 and the third plate 514 are connected. The first plate 512, the second plate 513, and the third plate 514 form a receiving cavity. The first plate 512 and the second plate 513 are provided with first clamping holes 515. The twisting plate 20 is provided with second clamping holes 22 on both sides. The pins are inserted into the first clamping holes 515 and the second clamping holes 22.

[0041] Specifically, when the twisted plate 20 needs to be installed onto the first bracket 11 and the second bracket 12, the first locking assembly 51 needs to be locked onto the first bracket 11 and the second locking assembly 52 needs to be locked onto the second bracket 12. Taking the installation of the first locking assembly 51 as an example, firstly, insert the pin 511 on the first plate 512 into the positioning hole 114 of the first bracket 11. Then rotate the first locking assembly 51 until the first bracket 11 enters the receiving cavity. After the first locking assembly 51 and the second locking assembly 52 are installed, the twisted plate 20 can be placed onto the connecting plate 53. This design allows for quick installation of the twisted plate 20 without the need to weld reinforcing ribs or other components onto the bracket. To further secure the twisted plate 20, locking pins can be inserted into the first locking hole 515 and the second locking hole 22, preventing the twisted plate 20 from shifting and the mounting mechanism 50 from rotating. On the other hand, by opening multiple positioning holes 114 on the first bracket 11 and the second bracket 12, the installation height of the first locking group 51 and the second locking group 52 can also be selected, thereby enabling the adjustment of the height of the twisted plate 20.

[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0043] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0044] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

Claims

1. A twisting device for embroidery thread production, characterized in that, include: Support frame (10); A split plate (20) is installed on the support frame (10), and a plurality of mounting holes (21) are arranged on the split plate (20). The splitting block (30) is movably installed in the mounting hole (21); The twisting block (30) includes: The split ring body (31) is disposed in the mounting hole (21); A telescopic device (32) is provided at the end of the twisted ring body (31) to limit the twisted ring body (31) within the mounting hole (21).

2. The slitting device for embroidery thread production as described in claim 1, characterized in that: The end of the twisted ring body (31) is provided with a mounting groove (311). The telescopic device (32) is installed in the mounting groove (311). The telescopic device (32) includes a mounting cylinder (321), an elastic body (322), and a telescopic column (323). The mounting cylinder (321) is installed in the mounting groove (311). One end of the telescopic column (323) is movably disposed in the mounting cylinder (321). The elastic body (322) is disposed between the bottom wall of the mounting cylinder (321) and the telescopic column (323).

3. The slitting device for embroidery thread production as described in claim 2, characterized in that: The end of the telescopic column (323) is provided with a ball (3231), and the ball (3231) is provided with a baffle (3232) on the side facing the twisted ring (31) to abut against the twisted plate (20).

4. The twisting device for embroidery thread production as described in claim 2, characterized in that: The end of the split ring body (31) is provided with a push section (312), and the push section (312) is provided with a push ring (313) for pushing the telescopic column (323) into the mounting cylinder (321).

5. The slitting device for embroidery thread production as described in claim 4, characterized in that: The end of the push ring (313) is provided with an arc surface (3131).

6. The slitting device for embroidery thread production as described in claim 4, characterized in that: The other end of the twisted ring body (31) is provided with a retaining ring (314) to cooperate with the telescopic device (32) so that the twisted ring body (31) is limited within the mounting hole (21).

7. The slitting device for embroidery thread production as described in claim 1, characterized in that: The support frame (10) includes a first bracket (11) and a second bracket (12). Both the first bracket (11) and the second bracket (12) are provided with a moving groove (111). The moving groove (111) is provided with a roller assembly (40). The roller assembly (40) includes a wheel frame (41) and a rotating wheel (42). The wheel frame (41) is movably disposed in the moving groove (111), and the rotating wheel (42) is mounted on the wheel frame (41).

8. The slitting device for embroidery thread production as described in claim 7, characterized in that: Both the first bracket (11) and the second bracket (12) have slots on their side walls. The slots include a first slot (112) and a second slot (113). The end of the wheel frame (41) is hinged with a rotating block (411), and a torsion spring is provided on the hinge shaft to realize the rotation of the rotating block (411). A connecting shaft (43) is connected between the rotating block (411) in the first bracket (11) and the rotating block (411) in the second bracket (12). The connecting shaft (43) is limited to the first slot (112) or the second slot (113).

9. The slitting device for embroidery thread production as described in claim 7, characterized in that: The side walls of the first bracket (11) and the second bracket (12) are provided with positioning holes (114), and the positioning holes (114) are provided with mounting mechanisms (50), and the split plate (20) is provided on the mounting mechanism (50).

10. The slitting device for embroidery thread production as described in claim 9, characterized in that: The card loading mechanism (50) includes a first card group (51), a second card group (52), and a connecting plate (53). The first card group (51) and the second card group (52) are connected by the connecting plate (53). The first card group (51) includes a pin (511), a first plate (512), a second plate (513), and a third plate (514). The pin (511) is located on one side of the first plate (512). The first plate (512) and the second plate (514) are connected by the connecting plate (53). The first plate (512), the second plate (513), and the third plate (514) are connected, and the first plate (512), the second plate (513), and the third plate (514) form a receiving cavity. The first plate (512) and the second plate (513) are provided with first locking holes (515), and the two sides of the twisted plate (20) are provided with second locking holes (22). Locking pins are inserted into the first locking holes (515) and the second locking holes (22).

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