Nylon gear elastic cylindrical pin mounting tool
Patent Information
- Application Number
- CN202522126671.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-09
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-10-09
AI Technical Summary
尼龙齿轮有销孔和顶丝孔，电机端部有销孔，二者通过弹性销装配，卷接机组牌子箱长时间运行时，该部位尼龙齿轮容易老化碎裂，导致电机无法对盘纸进行补偿来调整钢印位置，需更换新齿轮
[0017]相对于上述背景技术，本申请实施例所提供的尼龙齿轮弹性圆柱销安装工装包括卡座和手柄，卡座设有卡槽，卡槽用于放置尼龙齿轮，卡座具有安装孔，安装孔用于放置弹性圆柱销，且尼龙齿轮放置在卡槽时，安装孔能够与尼龙齿轮的销孔对应，手柄能够伸入安装孔内，手柄用于推动弹性圆柱销伸入尼龙齿轮的销孔。在安装尼龙齿轮的过程中，先将尼龙齿轮放置在卡槽中，并使尼龙齿轮的销孔与安装孔对齐，然后将尼龙齿轮安装在电机端部，并使电机端部的销孔与尼龙齿轮的销孔和安装孔对齐，然后将弹性圆柱销放入安装孔内，将手柄伸入安装孔中，通过手柄推动弹性圆柱销移动，直至弹性圆柱销伸入尼龙齿轮的销孔与电机端部的销孔中，实现将尼龙齿轮固定在电机端部。本申请的尼龙齿轮弹性圆柱销安装工装通过手柄将弹性圆柱销挤压至尼龙齿轮的销孔与电机端部的销孔中，避免了安装过程中尼龙齿轮和弹性销受损，降低更换成本。
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Figure CN224826368U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of pin installation tooling technology, and in particular to a nylon gear elastic cylindrical pin installation tooling. Background Technology
[0002] When the winding and splicing unit produces products with steel stamps, the first paper guide roller in the winding and forming section adjusts the position of the steel stamp on the paper roll via a paper roll tension compensation motor. This motor transmits power through a nylon gear at its end connected to the paper guide roller gear. The nylon gear has a pin hole and a set screw hole, and the motor end also has a pin hole; the two are assembled by a flexible pin. During long-term operation of the brand box in the winding and splicing unit, the nylon gear in this part is prone to aging and breakage, causing the motor to be unable to compensate for the paper roll and adjust the steel stamp position, requiring replacement with a new gear.
[0003] During gear modification, a copper hammer is typically used to hammer the elastic pin into the pin hole at the nylon gear and motor end. However, this method is time-consuming and laborious, and it is easy to damage the nylon gear and the elastic cylindrical pin. Utility Model Content
[0004] The purpose of this application is to provide a nylon gear elastic cylindrical pin installation fixture that can prevent damage to the nylon gear and elastic cylindrical pin during installation.
[0005] To achieve the above objectives, this application provides a nylon gear elastic cylindrical pin mounting fixture, including: a retainer and a handle;
[0006] The card holder has a card slot for placing a nylon gear. The card holder has a mounting hole for placing an elastic cylindrical pin. When the nylon gear is placed in the card slot, the mounting hole can correspond to the pin hole of the nylon gear.
[0007] The handle can extend into the mounting hole, and the handle is used to push the elastic cylindrical pin into the pin hole of the nylon gear.
[0008] In some embodiments, the card holder includes a first bracket and a second bracket, and a motion component is provided between the first bracket and the second bracket, the motion component being used to adjust the distance between the first bracket and the second bracket.
[0009] In some embodiments, the motion component includes a first motion block and a second motion block. The first motion block is disposed on the first support, and the second motion block is disposed on the second support. The first motion block is provided with a slide rail, and the second motion block is provided with a slide groove. The second motion block slides with the slide rail through the slide groove to achieve the first motion block and the second motion block moving closer or further apart along a first direction.
[0010] In some embodiments, the motion component is provided with a first limiting mechanism for locking the first motion block and the second motion block to restrict them from moving closer or further apart.
[0011] In some embodiments, the first limiting mechanism includes a first screw and a first washer. The slide rail is provided with a first threaded hole, the second moving block is provided with a first elongated hole, the first washer is sleeved on the first screw, the first screw can pass through the first elongated hole and extend into the first threaded hole, and is threadedly engaged with the first threaded hole, and the first washer can abut against the second moving block.
[0012] In some embodiments, the first moving block is slidably engaged with the first support, the second moving block is slidably engaged with the second support, the first moving block is capable of moving relative to the first support along a second direction, and the second moving block is capable of moving relative to the second support along a second direction, wherein the first direction is perpendicular to the second direction.
[0013] In some embodiments, the nylon gear elastic cylindrical pin mounting fixture has a second limiting mechanism and a third limiting mechanism respectively provided on the first bracket and the second bracket. The second limiting mechanism is used to restrict the first moving block from moving in a second direction, and the third limiting mechanism is used to restrict the second moving block from moving in a second direction.
[0014] In some embodiments, the second limiting mechanism includes a second screw and a second washer. The first moving block is provided with a second threaded hole, the first bracket is provided with a second elongated hole, the second washer is sleeved on the second screw, the second screw can pass through the second elongated hole and extend into the second threaded hole, and is threadedly engaged with the second threaded hole, the second washer can abut against the first bracket, and the third limiting mechanism has the same structure as the second limiting mechanism, and is disposed between the second bracket and the second moving block.
[0015] In some embodiments, the mounting hole is provided on the first bracket, and the second bracket is provided with a positioning component for positioning the nylon gear.
[0016] In some embodiments, the positioning component includes an elastic element and a positioning rod. The second bracket is provided with positioning holes, which are distributed correspondingly to the mounting holes. The positioning rod is slidably engaged in the positioning holes through the elastic element, and its end can extend out of the positioning holes and into the pin holes of the nylon gear.
[0017] Compared to the aforementioned background technology, the nylon gear elastic cylindrical pin mounting fixture provided in this application includes a retainer and a handle. The retainer has a slot for placing the nylon gear and a mounting hole for placing the elastic cylindrical pin. When the nylon gear is placed in the slot, the mounting hole corresponds to the pin hole of the nylon gear. The handle can be inserted into the mounting hole and is used to push the elastic cylindrical pin into the pin hole of the nylon gear. During the installation of the nylon gear, the nylon gear is first placed in the slot, and the pin hole of the nylon gear is aligned with the mounting hole. Then, the nylon gear is installed at the motor end, and the pin hole at the motor end is aligned with the pin hole of the nylon gear and the mounting hole. The elastic cylindrical pin is then placed into the mounting hole, and the handle is inserted into the mounting hole. The handle pushes the elastic cylindrical pin until it extends into both the pin hole of the nylon gear and the pin hole at the motor end, thus fixing the nylon gear to the motor end. The nylon gear elastic cylindrical pin installation fixture of this application uses a handle to press the elastic cylindrical pin into the pin hole of the nylon gear and the pin hole at the end of the motor, which avoids damage to the nylon gear and elastic pin during installation and reduces replacement costs. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, 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 embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0019] Figure 1 A schematic diagram of the nylon gear elastic cylindrical pin mounting fixture structure, which is an embodiment of this application.
[0020] Figure 2 A front view of the nylon gear elastic cylindrical pin mounting fixture according to an embodiment of this application;
[0021] Figure 3 A top view of the nylon gear elastic cylindrical pin mounting fixture according to an embodiment of this application;
[0022] Figure 4 A side view of the nylon gear elastic cylindrical pin mounting fixture according to an embodiment of this application;
[0023] Figure 5 A cross-sectional view of the nylon gear elastic cylindrical pin mounting fixture according to an embodiment of this application;
[0024] Figure 6A schematic diagram of the assembly of the nylon gear and the elastic cylindrical pin of the nylon gear elastic cylindrical pin mounting fixture according to an embodiment of this application;
[0025] Figure 7 for Figure 6 A sectional view.
[0026] in:
[0027] 1. Card holder; 11. First bracket; 111. Mounting hole; 112. Second elongated hole; 12. Second bracket; 121. Positioning hole; 2. Handle; 3. Motion component; 31. First moving block; 311. Slide rail; 32. Second moving block; 321. First elongated hole; 4. First limiting mechanism; 41. First screw; 42. First washer; 5. Second limiting mechanism; 51. Second screw; 52. Second washer; 6. Third limiting mechanism; 7. Positioning component; 71. Elastic element; 72. Positioning rod; 100. Nylon gear; 200. Elastic cylindrical pin. Detailed Implementation
[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0029] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0030] It should be noted that the directional terms such as "upper end," "lower end," "left side," and "right side" used below are defined based on the accompanying drawings in the specification. The first direction in the embodiments of this application is as shown in the accompanying drawings. Figure 1 The X-axis direction, i.e., the left-right direction, is the second direction in this embodiment of the application, as specified in the appendix to the specification. Figure 1 The Y-axis direction in the diagram refers to the vertical direction.
[0031] The nylon gear elastic cylindrical pin mounting fixture provided in this application embodiment includes a retainer 1 and a handle 2. The retainer 1 has a retaining groove for placing a nylon gear 100. The retainer 1 has a mounting hole 111 for placing an elastic cylindrical pin 200. When the nylon gear 100 is placed in the retaining groove, the mounting hole 111 can correspond to the pin hole of the nylon gear 100. The handle 2 can extend into the mounting hole 111 and is used to push the elastic cylindrical pin 200 into the pin hole of the nylon gear 100.
[0032] During the installation of the nylon gear 100, the nylon gear 100 is first placed in the slot and secured by the slot. The pin hole of the nylon gear 100 is then aligned with the mounting hole 111. The nylon gear 100 is then installed on the motor end, and the pin hole on the motor end is aligned with the pin hole of the nylon gear 100 and the mounting hole 111. The elastic cylindrical pin 200 is then inserted into the mounting hole 111. The handle 2 is then inserted into the mounting hole 111, and the elastic cylindrical pin 200 is pushed by the handle 2 until it extends into the pin hole of the nylon gear 100 and the pin hole on the motor end, thus fixing the nylon gear 100 to the motor end.
[0033] The nylon gear elastic cylindrical pin installation fixture of this application uses handle 2 to press the elastic cylindrical pin 200 into the pin hole of the nylon gear 100 and the pin hole at the end of the motor, which avoids damage to the nylon gear 100 and the elastic pin during installation and reduces replacement costs.
[0034] In some embodiments, the card holder 1 includes a first bracket 11 and a second bracket 12, and a motion component 3 is provided between the first bracket 11 and the second bracket 12. The motion component 3 is used to adjust the distance between the first bracket 11 and the second bracket 12.
[0035] It is understandable that by adjusting the distance between the first bracket 11 and the second bracket 12 through the motion component 3, the size of the slot can be adjusted, thereby adapting to nylon gears 100 of different sizes and improving the versatility of the device.
[0036] Preferably, the motion component 3 includes a first motion block 31 and a second motion block 32. The first motion block 31 is disposed on the first support 11, and the second motion block 32 is disposed on the second support 12. The first motion block 31 is provided with a slide rail 311, and the second motion block 32 is provided with a slide groove. The second motion block 32 slides with the slide rail 311 through the slide groove to realize that the first motion block 31 and the second motion block 32 move closer or further apart in the left and right direction.
[0037] It is understood that both the first moving block 31 and the second moving block 32 are cuboid structures, and both the first support 11 and the second support 12 are inverted T-shaped structures. The first support 11 and the second support 12 are spaced apart, and the first moving block 31 and the second moving block 32 are located between the first support 11 and the second support 12. A groove is formed between the first support 11, the second support 12, the first moving block 31, and the second moving block 32. The slide rail 311 is located at the left end of the first moving block 31 and extends to the right. The second moving block 32 is located to the left of the first moving block 31. The second moving block 32 has a groove that matches the shape of the slide rail 311. The second moving block 32 slides in conjunction with the slide rail 311 through the groove. When the first moving block 31 and the second moving block 32 move closer to or further away from each other, the slide rail 311 can gradually extend into or out of the groove. By driving the second moving block along the slide rail 311 to move closer to or further away from the first moving block 31 by external force, the size of the groove can be changed.
[0038] Based on the above embodiments, the motion component 3 is provided with a first limiting mechanism 4, which is used to lock the first motion block 31 and the second motion block 32.
[0039] By setting the first limiting mechanism 4, when installing the elastic cylindrical pin 200, the first moving block 31 and the second moving block 32 can be prevented from moving away from each other, thereby preventing the nylon gear 100 from loosening.
[0040] Preferably, the first limiting mechanism 4 includes a first screw 41 and a first washer 42. The slide rail 311 is provided with a first threaded hole, and the second moving block 32 is provided with a first elongated hole 321. The first screw 41 can pass through the first elongated hole 321 and extend into the first threaded hole, and is threadedly engaged with the first threaded hole. The first washer 42 is sleeved on the first screw 41.
[0041] It is understandable that by tightening the first screw 41, the first washer 42 can abut against the second moving block 32. The first screw 41 applies pressure to the first washer 42, so that static friction is formed between the first washer 42 and the second moving block 32. The friction between the first washer 42 and the second moving block 32 restricts the movement of the second moving block 32, so as to achieve relative fixation between the first moving block 31 and the second moving block 32.
[0042] In some embodiments, the first moving block 31 is slidably engaged with the first support 11, and the second sports pants are slidably engaged with the second support 12. The first moving block 31 can move relative to the first support 11 in the up-down direction, and the second moving block 32 can move relative to the second support 12 in the up-down direction.
[0043] Understandably, since the first moving block 31 and the second moving block 32 slide together via the slide rail 311 and the slide groove, the first moving block 31 and the second moving block 32 will move up and down synchronously, thereby adjusting the depth of the slot to accommodate nylon gears 100 of different thicknesses. During the process of placing the nylon gear 100 into the slot, the first moving block 31 and the second moving block 32 first move upward, so that the depth of the slot is greater than the thickness of the nylon gear 100, and the nylon gear 100 can be easily placed in the slot. Then the first moving block 31 and the second moving block 32 move downward until they stop against the nylon gear 100. When the elastic cylindrical pin 200 is inserted into the pin hole of the nylon gear 100 and the motor end, the first moving block 31 and the second moving block 32 move upward again and disengage from the nylon gear 100. The nylon gear 100 can then be easily removed from the slot, facilitating the loading and unloading of the nylon gear 100.
[0044] Based on the above embodiments, the first support 11 and the second support 12 are respectively provided with a second limiting mechanism 5 and a third limiting mechanism 6. The second limiting mechanism 5 is used to restrict the first moving block 31 from moving up and down, and the third limiting mechanism 6 is used to restrict the second moving block 32 from moving up and down.
[0045] Understandably, by setting the second limiting mechanism 5 and the third limiting mechanism 6, when the nylon gear 100 is placed in the slot, the second limiting mechanism 5 and the third limiting mechanism 6 limit the first moving block 31 and the second moving block 32 to prevent the first moving block 31 and the second moving block 32 from moving up and down. Since the top of the nylon gear 100 abuts against the first moving block 31 and the second moving block 32, and the bottom of the nylon gear 100 abuts against the first bracket 11 and the second bracket 12, by limiting the first moving block 31 and the second moving block 32 in the vertical direction, the nylon gear 100 can be limited in the vertical direction to prevent the nylon gear 100 from shaking up and down.
[0046] Preferably, the second limiting mechanism 5 includes a second screw 51 and a second washer 52. The first moving block 31 is provided with two second threaded holes, which are distributed parallel to each other on the side wall of the first moving block 31. The first bracket 11 is provided with two second elongated holes 112, which correspond to the two second threaded holes respectively. Each second threaded hole is equipped with a second screw 51 and a second washer 52. The second washer 52 is sleeved on the second screw 51. The second screw 51 can pass through the second elongated hole 112 and extend into the second threaded hole, and is threadedly engaged with the second threaded hole. The third limiting mechanism 6 has the same structure as the second limiting mechanism 5. The third limiting mechanism 6 is located between the second bracket 12 and the second moving block 32.
[0047] Understandably, when the second screw 51 is loosened, the second washer 52 is disengaged from the first bracket 11. At this time, the first moving block 31 can move up and down relative to the first bracket 11. When the second screw 51 is tightened, the second screw 51 presses against the second washer 52, and the second washer 52 abuts against the first bracket 11. The second screw 51 applies pressure to the second washer 52, so that there is static friction between the second washer 52 and the first bracket 11. The friction between the second washer 52 and the first bracket 11 can restrict the up and down movement of the first moving block 31. Similarly, the third limiting mechanism 6 can limit the second moving block 32 in the up and down direction.
[0048] In some embodiments, mounting holes 111 are provided on the first bracket 11, and positioning components 7 are provided on the second bracket 12. The positioning components 7 are used to position the nylon gear 100.
[0049] It is understandable that the positioning component 7 positions the nylon gear 100 so that the pin hole on the nylon gear 100 is aligned with the mounting hole 111 on the first bracket 11, which facilitates pressing the elastic cylindrical pin 200 in the mounting hole 111 into the pin hole on the nylon gear 100.
[0050] Preferably, the positioning component 7 includes an elastic element 71 and a positioning rod 72. The second bracket 12 is provided with a positioning hole 121, which is symmetrically distributed with the mounting hole 111. The positioning hole 121 is a stepped hole with a large diameter section and a small diameter section. The large diameter section of the positioning hole 121 is located at the left end, and the small diameter section is located at the right end. The elastic element 71 is a spring and is disposed in the large diameter section of the positioning hole 121. The positioning rod 72 is provided with a limiting ring, and the diameter of the positioning rod 72 is perpendicular to the small diameter section of the positioning hole 121. The diameter of the limiting ring is the same as the large diameter of the positioning hole 121. The positioning rod 72 is slidably fitted inside the positioning hole 121, and the limiting ring is located at the large diameter section of the positioning hole 121. The positioning rod 72 can move left and right relative to the positioning hole 121. One end of the elastic element 71 is fixedly connected to the limiting ring, and the other end is fixedly connected to the right end of the positioning hole 121. When the limiting ring moves to the right end of the positioning hole 121, the elastic element 71 is compressed to the limit. At this time, the left end of the positioning rod 72 is flush with the left end face of the positioning hole 121. Mounting hole 111 is a stepped hole with a major diameter section and a minor diameter section. The minor diameter section of mounting hole 111 is located at the left end, and the major diameter section of mounting hole 111 is located at the right end. The diameter of the minor diameter section of mounting hole 111 is the same as the diameter of the pin hole of nylon gear 100, and the diameter of the major diameter section of mounting hole 111 is the same as the diameter of elastic cylindrical pin 200 in its natural state. The major diameter section of mounting hole 111 has threads, and handle 2 has threads corresponding to the major diameter section of mounting hole 111. Handle 2 can engage with the threads of the major diameter section of mounting hole 111.
[0051] Understandably, during the placement of the nylon gear 100 into the slot, the positioning rod 72 is manually pulled to align its left end with the left end of the positioning hole 121. This causes the elastic element 71 to contract, preventing the positioning rod 72 from interfering with the nylon gear 100 when it is placed into the slot. After the nylon gear 100 is in the slot, it is then fitted onto the motor end. By adjusting the positions of the nylon gear 100 and the motor, the pin holes at the motor end, the nylon gear 100, the positioning hole 121, and the mounting hole 111 are coaxially distributed. At this point, the elastic element 71 releases its elastic force, pushing the positioning rod 72 out of the positioning hole 121. The positioning rod 72 then extends into the pin hole of the nylon gear 100 and the mounting hole 111 at the motor end. Insert the elastic cylindrical pin 200 into the large diameter section of the mounting hole 111, and then install the handle 2 on the mounting hole 111. By rotating the handle 2, push the elastic cylindrical pin 200 to the right. When the elastic cylindrical pin 200 moves from the large diameter section to the small diameter section of the mounting hole 111, the elastic cylindrical pin 200 is squeezed, and its diameter is the same as the pin hole diameter of the nylon gear 100. Continue to push the elastic cylindrical pin 200 to the right until the elastic cylindrical pin 200 is completely inserted into the pin hole of the nylon gear 100 and the pin hole at the end of the motor. During the insertion process, the elastic cylindrical pin 200 will stop against the positioning rod 72 and overcome the elastic force of the elastic element 71 to push the positioning rod 72 out of the pin hole of the nylon gear 100 and the pin hole at the end of the motor.
[0052] In summary, the nylon gear elastic cylindrical pin installation fixture of this application uses the handle 2 to press the elastic cylindrical pin 200 into the pin hole of the nylon gear 100 and the pin hole at the end of the motor, which reduces assembly time, improves efficiency, avoids damage to the nylon gear 100 and the elastic pin during installation, and reduces replacement costs.
[0053] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.
[0054] The above provides a detailed description of the nylon gear elastic cylindrical pin mounting fixture provided in this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are merely for the purpose of helping to understand the solution and core ideas of this application. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this application.
Claims
1. A fixture for mounting a nylon gear elastic cylindrical pin, characterized in that, include: Card holder (1), the card holder (1) includes a first bracket (11) and a second bracket (12), a motion component (3) is provided between the first bracket (11) and the second bracket (12), the motion component (3) is used to adjust the distance between the first bracket (11) and the second bracket (12), the card holder (1) is provided with a card slot, the card slot is used to place a nylon gear (100), the card holder (1) has a mounting hole (111), the mounting hole (111) is used to place an elastic cylindrical pin (200), and when the nylon gear (100) is placed in the card slot, the mounting hole (111) can correspond to the pin hole of the nylon gear (100); A handle (2) that can extend into the mounting hole (111) is used to push the elastic cylindrical pin (200) into the pin hole of the nylon gear (100).
2. The nylon gear elastic cylindrical pin mounting fixture according to claim 1, characterized in that, The motion component (3) includes a first motion block (31) and a second motion block (32). The first motion block (31) is disposed on the first support (11), and the second motion block (32) is disposed on the second support (12). The first motion block (31) is provided with a slide rail (311), and the second motion block (32) is provided with a slide groove. The second motion block (32) slides with the slide rail (311) through the slide groove to realize that the first motion block (31) and the second motion block (32) move closer or further away from each other along a first direction.
3. The nylon gear elastic cylindrical pin mounting fixture according to claim 2, characterized in that, The motion component (3) is provided with a first limiting mechanism (4), which is used to lock the first motion block (31) and the second motion block (32) to restrict them from getting closer or further apart.
4. The nylon gear elastic cylindrical pin mounting fixture according to claim 3, characterized in that, The first limiting mechanism (4) includes a first screw (41) and a first washer (42). The slide rail (311) is provided with a first threaded hole, and the second moving block (32) is provided with a first elongated hole (321). The first washer (42) is sleeved on the first screw (41). The first screw (41) can pass through the first elongated hole (321) and extend into the first threaded hole, and is threadedly engaged with the first threaded hole. The first washer (42) can abut against the second moving block (32).
5. The nylon gear elastic cylindrical pin mounting fixture according to claim 2, characterized in that, The first moving block (31) is slidably engaged with the first support (11), and the second moving block (32) is slidably engaged with the second support (12). The first moving block (31) can move relative to the first support (11) along a second direction, and the second moving block (32) can move relative to the second support (12) along a second direction. The first direction is perpendicular to the second direction.
6. The nylon gear elastic cylindrical pin mounting fixture according to claim 5, characterized in that, The first support (11) and the second support (12) are respectively provided with a second limiting mechanism (5) and a third limiting mechanism (6). The second limiting mechanism (5) is used to restrict the first moving block (31) from moving in the second direction, and the third limiting mechanism (6) is used to restrict the second moving block (32) from moving in the second direction.
7. The nylon gear elastic cylindrical pin mounting fixture according to claim 6, characterized in that, The second limiting mechanism (5) includes a second screw (51) and a second washer (52). The first moving block (31) is provided with a second threaded hole, and the first bracket (11) is provided with a second elongated hole (112). The second washer (52) is sleeved on the second screw (51). The second screw (51) can pass through the second elongated hole (112) and extend into the second threaded hole, and is threadedly engaged with the second threaded hole. The second washer (52) can abut against the first bracket (11). The third limiting mechanism (6) has the same structure as the second limiting mechanism (5) and is disposed between the second bracket (12) and the second moving block (32).
8. The nylon gear elastic cylindrical pin mounting fixture according to claim 1, characterized in that, The mounting hole (111) is provided on the first bracket (11), and the second bracket (12) is provided with a positioning component (7), which is used to position the nylon gear (100).
9. The nylon gear elastic cylindrical pin mounting fixture according to claim 8, characterized in that, The positioning component (7) includes an elastic element (71) and a positioning rod (72). The second bracket (12) is provided with a positioning hole (121). The positioning hole (121) is distributed correspondingly to the mounting hole (111). The positioning rod (72) is slidably engaged in the positioning hole (121) through the elastic element (71). Its end can extend out of the positioning hole (121) and into the pin hole of the nylon gear (100).