Assembling equipment of buffer for hidden sliding rail and buffer

Abstract

The utility model relates to the technical field of buffer assembling equipment, in particular to assembling equipment of a buffer for a hidden sliding rail and the buffer, which comprises a working table for processing operation, a turntable mechanism is rotatably mounted at the upper end of the working table, and a plurality of groups of placing mechanisms for placing materials are mounted on the circumference of the upper end of the turntable mechanism. A first conveying part and a second conveying part which play a role in feeding and discharging are arranged on one side of the workbench, and a rolling wheel part mounting mechanism, a clamping piece mounting mechanism, a damping piece and connecting piece mounting mechanism and a spring part mounting mechanism are sequentially arranged between the first conveying part and the second conveying part in the advancing direction of the rotating disc mechanism. According to the assembling equipment of the buffer for the hidden sliding rail and the buffer, the defects that in the prior art, the occupied area is large, and maintenance is inconvenient are overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of buffer assembly equipment, in particular to an assembly equipment for a buffer of a hidden slide rail and a buffer. Background Art

[0002] Existing assembly equipment for buffers of slide rails, such as an all-in-one automatic assembly machine for multiple types of slide rails proposed in Chinese Patent No. "CN202211735007.9", centralizes and unifies all the large and small links of assembling multiple types of slide rails onto a single production line, which can reduce the waiting and interference time between processes and greatly improve the assembly speed of multiple types of slide rails. However, for this type of assembly equipment, the installation structures of all its components are arranged in a row successively, resulting in a large floor area and inconvenient maintenance;

[0003] Existing slide rail buffers, such as a slide rail buffer proposed in Chinese Patent Application No. "CN202120860519.2", have a simple structure and can effectively prevent dust from entering the slide rail buffer while playing a buffering role. However, the elastic structure inside this slide rail buffer is a "one"-shaped structure, making it difficult to control its shape during elastic deformation;

[0004] Based on the above-mentioned existing defects, this case will propose a new type of assembly equipment for buffers of slide rails, as well as a buffer produced by this assembly equipment, to solve the problems of large floor area of the assembly equipment and difficult control of elastic deformation of the elastic structure, etc. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the problems existing in the prior art, such as large floor area, inconvenient maintenance, and difficult control of elastic deformation of the elastic structure, and to propose an assembly equipment for a buffer of a hidden slide rail and a buffer.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] Design an assembly equipment for a buffer of a hidden slide rail, including a workbench for processing operations. A turntable mechanism is rotatably installed at the upper end of the workbench. A plurality of placement mechanisms for placing materials are installed circumferentially at the upper end of the turntable mechanism. A first conveying part and a second conveying part for loading and unloading are arranged on one side of the workbench. A roller part installation mechanism, a clip installation mechanism, a damper and connector installation mechanism, and a spring part installation mechanism are sequentially arranged between the first conveying part and the second conveying part along the traveling direction of the turntable mechanism.

[0008] Preferably, a plurality of rotating blocks are rotatably installed on one side inside the placing mechanism, and a plurality of first cylinders corresponding to the placing mechanism are fixedly installed on the upper end surface of the workbench. The output end of the first cylinder is movably abutted against the plurality of rotating blocks through an abutting portion.

[0009] Preferably, a first driving guide rail is installed on one side of the output end of the first conveying portion, a first clamping portion is fixedly installed at the free end of the first driving guide rail, a second driving guide rail is installed at the input end of the second conveying portion, and a waste opening for discharging defective parts is formed in the lower end surface of the workbench close to the input end of the second conveying portion.

[0010] Preferably, a first detection device is arranged between the roller portion installation mechanism and the card member installation mechanism on the upper end surface of the workbench, and a comprehensive detection device for detecting the overall installation quality of the finished product is arranged between the spring portion and the second conveying portion on the upper end surface of the workbench.

[0011] Preferably, the roller portion installation mechanism includes a first feeding device arranged on one side of the workbench. The first feeding device is used for placing a roller portion containing a pin. A third driving guide rail is installed at the output end of the first feeding device, and a first installation portion is installed at the free end of the third driving guide rail.

[0012] Preferably, the card member installation mechanism includes a second feeding device. The second feeding device is used for placing card members. A fourth driving guide rail is installed at the output end of the second feeding device, and a second installation portion is installed at the free end of the fourth driving guide rail.

[0013] Preferably, the damper and connector installation mechanism includes a third feeding device and a second support frame. The third feeding device is used for placing connectors. A fifth driving guide rail is installed at the output end of the third feeding device, and a third installation portion is installed at the free end of the fifth driving guide rail. The third installation portion is used for installing a connector and damper assembly into a spring frame. A material placing groove for placing dampers is formed on one side of the second support frame. At the lower end of the second support frame, a feeding tray is rotatably installed at the opening at the lower end of the material placing groove. A second clamping portion is installed on the outer side of the second support frame. The second clamping portion is used for combining connectors and dampers;

[0014] Preferably, the spring portion installation mechanism includes a fourth feeding device. The fourth feeding device is used for placing a spring portion. A sixth driving guide rail is installed at the output end of the fourth feeding device, and a fourth installation portion is installed at the free end of the sixth driving guide rail. The fourth installation portion assembles the spring portion into the spring frame.

[0015] A buffer produced by the assembly device for a buffer of a hidden slide rail as described above, including a spring frame, one end of the spring frame is rotatably installed with a roller part through a pin, the other end of the spring frame is slidably installed with a clamping part and a connecting part, a damping part is installed inside the spring frame between the roller part and the connecting part, the output end of the damping part is movably abutted against the connecting part, a spring part connected to the roller part and the connecting part is movably installed on one side of the spring frame, and the spring part and the roller part cooperate to form a "U" - shaped structure.

[0016] Preferably, clamping parts are integrally formed at both ends of the spring part, and the two clamping parts are respectively clamped inside the spring frame and the connecting part.

[0017] An assembly device and a buffer for a hidden slide rail proposed by the present utility model have the beneficial effects that:

[0018] Through the provided turntable mechanism and the first conveying part, the second conveying part, the roller part installation mechanism, the clamping part installation mechanism, the damping part and connecting part installation mechanism, the spring part installation mechanism, etc. distributed circumferentially around the turntable mechanism, the sequential assembly of each component is arranged in a circular pattern, reducing the floor area of the device, making it more convenient for maintenance, feeding and other operations, and setting the first conveying part and the second conveying part on the same side increases the convenience of use, that is, the initial components and the finished components enter and exit from the same side, reducing the working intensity of the operator;

[0019] Through the provided first detection device and comprehensive detection device, the quality of the assembled parts can be detected during or after the assembly process, so as to cooperate with structures such as the waste outlet to discharge waste;

[0020] Through the "U" - shaped telescopic structure formed by the cooperation of the spring part and the roller part on the buffer, compared with the existing "one" - shaped telescopic structure, it can make better use of the elastic deformation effect of the spring part, and the clamping parts provided on the spring part can be more suitable for the sequential assembly work process. Description of the Drawings

[0021] Figure 1 Three - dimensional structure schematic diagram with... as the main body;

[0022] Figure 2 Top - view structure schematic diagram of the main body;

[0023] Figure 3 Multi - angle structure schematic diagram of the first conveying part and the second conveying part;

[0024] Figure 4 Three - dimensional structure schematic diagram of the first driving guide rail;

[0025] Figure 5 Three - dimensional structure schematic diagram of the workbench;

[0026] Figure 6 Schematic three-dimensional structure diagram of the placement mechanism;

[0027] Figure 7 Multi-angle structure diagram of the roller part installation mechanism;

[0028] Figure 8 Multi-angle structure diagram of the card part installation mechanism;

[0029] Figure 9 Multi-angle structure diagram of the damper and connection part installation mechanism;

[0030] Figure 10 Multi-angle structure diagram of the spring part installation mechanism;

[0031] Figure 11 Schematic main body structure diagram of the buffer.

[0032] In the figure:

[0033] 1. First conveying part; 101. First driving guide rail; 102. First clamping part; 2. Second conveying part; 201. Scrap outlet; 202. Second driving guide rail;

[0034] 3. Workbench; 301. Driving mechanism; 302. Turntable mechanism; 303. Placement mechanism; 3031. Rotating block; 3032. Contact part; 304. First cylinder;

[0035] 4. First feeding device; 401. Third driving guide rail; 402. First installation part; 5. First support frame; 501. First detection device; 6. Second feeding device; 601. Fourth driving guide rail; 602. Second installation part; 7. Third feeding device; 701. Fifth driving guide rail; 702. Third installation part; 8. Second support frame; 801. Material placement groove; 802. Feeding tray; 803. Second clamping part; 9. Fourth feeding device; 901. Sixth driving guide rail; 902. Fourth installation part; 10. Comprehensive detection device;

[0036] A1. Spring frame; A2. Roller part; A3. Pin; A4. Card part; A5. Damper; A6. Connection part; A7. Spring part; A701. Clamping part. Specific implementation manners

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0038] Refer to Figures 1-10Here are examples of the implementation of the main body:

[0039] An assembly device for a buffer of a hidden slide rail, including a workbench 3 for processing operations. A turntable mechanism 302 is rotatably installed at the upper end of the workbench 3. A plurality of placement mechanisms 303 for placing materials are circumferentially installed at the upper end of the turntable mechanism 302. A first conveying part 1 and a second conveying part 2 for loading and unloading are arranged on one side of the workbench 3. A plurality of processing devices are sequentially arranged between the first conveying part 1 and the second conveying part 2 along the traveling direction of the turntable mechanism 302;

[0040] Based on the above content, this device is used to produce a buffer for a hidden slide rail. The first conveying part 1 is used to transport the spring frame A1 to the placement mechanism 303, and the remaining plurality of processing devices are used to sequentially assemble the roller part A2, the clamping part A4, the damping part A5, the connecting part A6, the spring part A7, etc. to the spring frame A1. After the sequential assembly is completed, it is sent out by the second conveying part 2; The first conveying part 1 and the second conveying part 2 are arranged on the same side and cooperate with a plurality of processing devices through the rotation of the turntable mechanism 302 to achieve sequential assembly, reducing the space occupation of the device. At the same time, the processing devices do not interfere with each other, forming a modular combination structure and reducing the maintenance difficulty;

[0041] Further, referring to Figure 5 , a driving mechanism 301 for driving the turntable mechanism 302 to rotate along its own axis is fixedly installed at the lower end of the workbench 3. The driving structure can be composed of existing devices such as a motor and a gear set to achieve the driving effect on the turntable mechanism 302;

[0042] Further, referring to Figure 6 , a plurality of rotating blocks 3031 are rotatably installed on one side inside the placement mechanism 303. A plurality of first cylinders 304 corresponding to the placement mechanism 303 are fixedly installed on the upper end surface of the workbench 3. The output ends of the first cylinders 304 are movably abutted against the plurality of rotating blocks 3031 through an abutting part 3032. Its structure is as shown in the figure. The abutting part 3032 can be directly fixed to the output end of the first cylinder 304 by common means such as bolts. A roller or other structure can be rotatably installed at the part where the abutting part 3032 contacts the rotating block 3031 to reduce the friction with the rotating block 3031. The upper end of the rotating block 3031 is a hook-shaped structure for fixing the processing element in the placement mechanism 303;

[0043] Further, referring to Figure 3 、 4, on one side of the output end of the first conveying part 1, a first driving guide rail 101 is installed. The free end of the first driving guide rail 101 is fixedly installed with a first clamping part 102 by means of bolts or the like, so that the material on the first conveying part 1 can be transported to the placing mechanism 303 by driving the first clamping part 102 through the first driving guide rail 101. The first driving guide rail 101 can be a multi-axis moving mechanism;

[0044] Further, referring to Figure 3 , 4 , on the input end of the second conveying part 2, a second driving guide rail 202 is installed. The free end of the second driving guide rail 202 can also be provided with a first clamping part 102, so that the assembled product in the placing mechanism 303 can be transported to the second conveying part 2. A waste outlet 201 for discharging defective parts is opened on the lower end surface of one side of the workbench 3 close to the input end of the second conveying part 2, so that the unqualified finished products can be discharged.

[0045] Referring to Figures 7-10 , here is an example of the implementation mode of multiple groups of processing devices:

[0046] The multiple groups of processing devices include a roller part A2 installation mechanism, a clamping part A4 installation mechanism, a damping part A5 and a connecting part A6 installation mechanism, and a spring part A7 installation mechanism. A first detection device 501 for detecting whether the roller part A2 is installed in place is arranged between the roller part A2 installation mechanism and the clamping part A4 installation mechanism on the upper end surface of the workbench 3. A comprehensive detection device 10 for detecting the overall installation quality of the finished product is arranged between the spring part A7 and the second conveying part 2 on the upper end surface of the workbench 3;

[0047] Based on the above content, a PLC control device should be installed on the workbench 3 for connecting multiple groups of processing devices and the first detection device 501 and the comprehensive detection device 10. The comprehensive detection device 10 can be linked with the second conveying part 2 to send out the unqualified products through the waste outlet 201;

[0048] Further, the roller part A2 installation mechanism includes a first feeding device 4 arranged on one side of the workbench 3. The first feeding device 4 is used for placing the roller part A2 containing the pin A3. The output end of the first feeding device 4 is installed with a third driving guide rail 401. The free end of the third driving guide rail 401 is installed with a first installation part 402. The first feeding device 4 and the first installation part 402 are used for pressing the pin A3 contained in the roller part A2 into the spring frame A1, so that the roller part A2 can be rotatably connected with the spring frame A1;

[0049] Further, the first detection device 501 is fixedly installed on the workbench 3 through a first support frame 5;

[0050] Further, the card A4 installation mechanism includes a second feeding device 6 for placing the card A4. A fourth driving guide rail 601 is installed at the output end of the second feeding device 6, and a second installation part 602 is installed at the free end of the fourth driving guide rail 601, enabling the card A4 to be installed in the spring frame A1;

[0051] Further, the damper A5 and the connector A6 installation mechanism includes a third feeding device 7 and a second support frame 8. The third feeding device 7 is used to place the connector A6. A fifth driving guide rail 701 is installed at the output end of the third feeding device 7, and a third installation part 702 is installed at the free end of the fifth driving guide rail 701. The third installation part 702 is used to install the combination of the connector A6 and the damper A5 in the spring frame A1. A material placing groove 801 for placing the damper A5 is provided on one side of the second support frame 8. Refer to Figure 9 , at the lower end of the second support frame 8, a feeding tray 802 is rotatably installed at the opening at the lower end of the material placing groove 801. A second clamping part 803 is installed on the outside of the second support frame 8, and the second clamping part 803 is used to combine the connector A6 and the damper A5;

[0052] Furthermore, refer to Figure 8 , the feeding tray 802 includes a disc-shaped feeding structure and a driving motor. A slot capable of accommodating a single damper A5 is provided on the outer peripheral end face of the disc-shaped feeding structure, enabling the damper A5 to fall into the slot when the disc-shaped feeding structure rotates;

[0053] Further, the spring part A7 installation mechanism includes a fourth feeding device 9 for placing the spring part A7. A sixth driving guide rail 901 is installed at the output end of the fourth feeding device 9, and a fourth installation part 902 is installed at the free end of the sixth driving guide rail 901. The fourth installation part 902 assembles the spring part A7 into the spring frame A1.

[0054] Refer to Figure 11 , here is an example of the implementation method of the buffer:

[0055] A buffer produced by the above-mentioned assembly equipment for a hidden slide rail buffer includes a spring frame A1. One end of the spring frame A1 is rotatably installed with a roller part A2 through a pin A3. The other end of the spring frame A1 is slidably installed with a card A4 and a connector A6. A damper A5 is installed inside the spring frame A1 between the roller part A2 and the connector A6. The output end of the damper A5 is in movable abutment with the connector A6. A spring part A7 connected to the roller part A2 and the connector A6 is movably installed on one side of the spring frame A1, and the spring part A7 forms a "U-shaped structure";

[0056] Based on the above content, in the natural state, the spring part A7 can pull the combination of the clamping part A4 and the connecting part A6 towards the damping part A5, and the output end of the damping part A5 and the connecting part A6 further slow down the moving speed of the combination of the clamping part A4 and the connecting part A6 to form a buffering effect; the spring part A7 cooperates with the roller part A2 to form a "U-shaped structure", so that the spring part A7 can be tightened, making the elastic deformation of the spring part A7 more regular;

[0057] Furthermore, clamping parts A701 are integrally formed at both ends of the spring part A7, and the two groups of clamping parts A701 are respectively clamped inside the spring frame A1 and the connecting part A6. This structure enables better adaptation to sequential assembly. During assembly, only the clamping parts A701 need to be pressed into the spring frame A1 or the connecting part A6 to form a connection.

[0058] Finally supplemented:

[0059] The first installation part 402, the second installation part 602, the third installation part 702, and the fourth installation part 902 can all include clamping mechanisms, pressing mechanisms, etc. according to requirements, for clamping and transporting parts and pressing the parts into the combination.

[0060] Based on the above examples of each embodiment, during the assembly operation:

[0061] Place the spring frame A1 on the first conveying part 1. The first driving guide rail 101 and the first clamping part 102 in the first conveying part 1 cooperate to place the spring frame A1 in the placing mechanism 303. At the same time, the turntable mechanism 302 continuously rotates in cooperation under the action of the driving mechanism 301;

[0062] The whiteboard spring frame A1 enters the angle where the roller part A2 installation mechanism is located along with the placing mechanism 303. The first feeding device 4 continuously supplies the combination of the roller part A2 and the pin A3, and through the cooperation of the third driving guide rail 401 and the first installation part 402, the combination of the roller part A2 and the pin A3 is pressed into the spring frame A1. After that, the combination of the spring frame A1 and the roller part A2 passes through the first detection device 501. The first detection device 501 senses whether the roller part A2 and the pin A3 are assembled in place through probes, infrared, etc. When the assembly is abnormal, the subsequent steps will be skipped or rotated reversely and pressed again for installation;

[0063] The qualified combination of the spring frame A1 and the roller part A2 enters the angle where the clamping part A4 installation mechanism is located. The second feeding device 6 continuously supplies the clamping part A4, and through the cooperation of the fourth driving guide rail 601 and the second installation part 602, the clamping part A4 is placed in the spring frame A1;

[0064] The combination of the spring bracket A1, the roller part A2, and the clamping part A4 enters the angle where the damping part A5 and the connecting part A6 installation mechanism are located. The third feeding device 7 continuously supplies the connecting part A6, and the second support frame 8 continuously supplies the damping part A5. Through the cooperation of the fifth driving guide rail 701, the third installation part 702, and the second clamping part 803, the damping part A5 and the connecting part A6 are installed in the spring bracket A1, and the connection is clamped with the clamping part A4 to form a combination;

[0065] The combination of the spring bracket A1, the roller part A2, the clamping part A4, the connecting part A6, and the damping part A5 enters the angle where the spring part A7 installation mechanism is located. The fourth feeding device 9 continuously supplies the spring part A7. Through the cooperation of the sixth driving guide rail 901 and the fourth installation part 902, the clamping parts A701 at both ends of the spring part A7 are respectively clamped into the spring bracket A1 and the connecting part A6;

[0066] Finally, after being detected by the comprehensive detection device 10, the qualified finished products are transported to the second conveying part 2 through structures such as the second driving guide rail 202, and the unqualified finished products are transported to the waste outlet 201.

[0067] Based on the examples of the above embodiments, when in use:

[0068] When pulling the combination of the clamping part A4 and the connecting part A6, it will drive the spring part A7 to stretch and produce elastic deformation and generate resistance. When releasing the combination of the clamping part A4 and the connecting part A6, the spring part A7 will pull the combination of the clamping part A4 and the connecting part A6 to move towards the damping part A5 and abut against the output end of the damping part A5, and the damping part A5 forms a buffering effect on the combination of the clamping part A4 and the connecting part A6.

[0069] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. An assembling device for a buffer of a concealed slide rail, comprising a workbench (3) for processing operations, wherein a turntable mechanism (302) is rotatably installed at the upper end of the workbench (3), and it is characterized in that: A plurality of placement mechanisms (303) for placing materials are installed on the upper circumference of the turntable mechanism (302). On one side of the workbench (3), a first conveying part (1) and a second conveying part (2) for loading and unloading are provided respectively. Between the first conveying part (1) and the second conveying part (2), a roller part (A2) installation mechanism, a clamping part (A4) installation mechanism, a damping part (A5) and a connecting part (A6) installation mechanism, and a spring part (A7) installation mechanism are sequentially arranged along the traveling direction of the turntable mechanism (302).

2. The assembling device for a buffer of a hidden slide rail according to claim 1, characterized in that: On one side inside the placement mechanism (303), a plurality of rotating clamping blocks (3031) are rotatably installed. On the upper end surface of the workbench (3), a plurality of first cylinders (304) corresponding to the placement mechanism (303) are fixedly installed. The output ends of the first cylinders (304) are movably abutted against the plurality of rotating clamping blocks (3031) through an abutting part (3032).

3. The assembling device for a buffer of a hidden slide rail according to claim 1, characterized in that: On one side of the output end of the first conveying part (1), a first driving guide rail (101) is installed. The free end of the first driving guide rail (101) is fixedly installed with a first clamping part (102). On the input end of the second conveying part (2), a second driving guide rail (202) is installed. On the lower end surface of the workbench (3) near the input end of the second conveying part (2), a waste material port (201) for discharging defective parts is provided.

4. An assembly device for a buffer of a concealed slide rail according to claim 1, characterized in that: On the upper end surface of the workbench (3), a first detection device (501) is arranged between the roller part (A2) installation mechanism and the clamping part (A4) installation mechanism. On the upper end surface of the workbench (3), between the spring part (A7) and the second conveying part (2), a comprehensive detection device (10) for detecting the overall installation quality of the finished product is provided.

5. An assembly device for a buffer of a hidden slide rail according to claim 1, characterized in that: The roller part (A2) installation mechanism includes a first feeding device (4) arranged on one side of the workbench (3). The first feeding device (4) is used for placing the roller part (A2) containing a pin (A3). The output end of the first feeding device (4) is installed with a third driving guide rail (401), and the free end of the third driving guide rail (401) is installed with a first installation part (402).

6. The assembling device for a buffer of a concealed slide rail according to claim 1, characterized in that: The clamping part (A4) installation mechanism includes a second feeding device (6). The second feeding device (6) is used for placing the clamping part (A4). The output end of the second feeding device (6) is installed with a fourth driving guide rail (601), and the free end of the fourth driving guide rail (601) is installed with a second installation part (602).

7. An assembling device for a buffer of a hidden slide rail according to claim 1, characterized in that: The installation mechanism of the damping member (A5) and the connecting member (A6) includes a third feeding device (7) and a second support frame (8). The third feeding device (7) is used to place the connecting member (A6). The output end of the third feeding device (7) is installed with a fifth driving guide rail (701). The free end of the fifth driving guide rail (701) is installed with a third installation part (702). The third installation part (702) is used to install the combination of the connecting member (A6) and the damping member (A5) into the spring frame (A1). On one side of the second support frame (8), there is a material placing groove (801) for placing the damping member (A5). At the lower end of the second support frame (8), at the opening of the lower end of the material placing groove (801), a feeding tray (802) is rotatably installed. On the outside of the second support frame (8), a second clamping part (803) is installed. The second clamping part (803) is used to combine the connecting member (A6) and the damping member (A5).

8. An assembly device for a buffer of a hidden slide rail according to claim 1, characterized in that: The installation mechanism of the spring part (A7) includes a fourth feeding device (9). The fourth feeding device (9) is used to place the spring part (A7). The output end of the fourth feeding device (9) is installed with a sixth driving guide rail (901). The free end of the sixth driving guide rail (901) is installed with a fourth installation part (902). The fourth installation part (902) assembles the spring part (A7) into the spring frame (A1).

9. A buffer, comprising a spring holder (A1), characterized in that: One end of the spring frame (A1) is rotatably installed with a roller part (A2) through a pin (A3). The other end of the spring frame (A1) is slidably installed with a clamping part (A4) and a connecting member (A6). Inside the spring frame (A1), between the roller part (A2) and the connecting member (A6), a damping member (A5) is installed. The output end of the damping member (A5) is movably abutted against the connecting member (A6). On one side of the spring frame (A1), a spring part (A7) connected to the roller part (A2) and the connecting member (A6) is movably installed. The spring part (A7) and the roller part (A2) cooperate to form a "U" - shaped structure.

10. A buffer according to claim 9, characterized in that: At both ends of the spring part (A7), there are integrally formed clamping parts (A701). The two groups of clamping parts (A701) are respectively clamped inside the spring frame (A1) and the connecting member (A6).

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