Workbench for pin shaft-chain plate bilateral synchronous press fitting and press fitting equipment

Abstract

The utility model aims to provide the worktable for synchronously pressing the two sides of the pin shaft and the chain plate, which allows the pin shafts on the two sides to be connected and fixed with the same chain plate at one time in the pressing process, and the pressing equipment comprising the worktable. The working table comprises a base table located at the bottom, a first guide stand column and a second guide stand column are arranged on the base table, a movable bearing sliding block is installed between the two guide columns, guide sliding rail structures are formed between the two sides of the movable bearing sliding block and the guide columns on the two sides, and the movable bearing sliding block can ascend and descend. A supporting reset spring is further arranged between the bottom face of the movable bearing sliding block and the top face of the base table. A positioning inserting groove used for limiting and fixing a pin shaft on one side is formed in the upper portion of the first guide stand column, meanwhile, a positioning inserting hole is formed in the movable bearing sliding block, and a supporting block used for supporting the pin shaft on the side is further arranged on the side, close to the second guide stand column, of the base table.

Description

Technical Field

[0001] The utility model relates to the field of devices for press-fitting and connecting parts, in particular to a workbench for synchronous press-fitting of a pin shaft and a chain plate on both sides and press-fitting equipment comprising the workbench. Background Art

[0002] Chains, as an essential mechanical transmission element, play a critical role in numerous applications. They are widely used in industrial transmissions, connecting motors and mechanical equipment to transmit power and motion, and are commonly found in equipment such as conveyors, hoists, and cranes. In transportation systems, chains, as part of conveyor belts, are used to move goods and materials, particularly in logistics and warehousing. Agricultural machinery, such as tractors and harvesters, also relies on chains for power transmission. Furthermore, chain applications include power transmission in bicycles and motorcycles, timing chains in automotive engines, drive systems for machining equipment such as machine tools, lifting and handling in construction machinery, mooring systems in ships, conveyor belts in the food processing industry, and drive and positioning systems in automated production lines. These application scenarios highlight the diversity and importance of chains across various industries. Their design and selection must be tailored to the specific operating environment and load requirements to ensure performance and reliability.

[0003] In the process of processing and producing chains of various specifications, sizes and functions, the common point of these chains is that they are all formed by a number of chain links and pins that are alternately installed and connected to each other, so that while ensuring that the chain has sufficient tensile strength, it can also rotate around the pins around the junctions between the chain links, so that the chain as a whole has a certain degree of swinging flexibility. As a relatively important step in the production of a chain, it is to install and fix the pins and chain plates. It should be noted here that generally in this process, the pins and the chain plates on one side will be fixed together by riveting, and then the through holes on the other chain plate will be sleeved on the inner side of the pins. Since the chain plate fixed to the pins on one side adopts an interference fit with the pins, it is necessary to use equipment for positioning and pressing. For example, a chain pin riveting device that increases the stability of the chain disclosed in the Chinese invention patent application document with application number CN201811622208.1 can complete the above process steps. The device includes a processing table, a pressure rod body and a limit plate. A lower chain shaft clamp is welded and connected to the lower middle position of the processing table. An upper chain shaft clamp is provided above the chain shaft body. The front and rear sides of the upper chain shaft clamp are both slidably connected to the processing table through a first protrusion. The chain piece fixing device includes a connecting groove, a second protrusion, a reserved hole, a first magnetic block, a second magnetic block and a connecting frame. The rear side of the connecting groove is provided with reserved holes at equal intervals. The front sides of the upper and lower surfaces of the inner wall of the connecting groove are both glued and connected to the second magnetic block. A tooth block is connected to the top of the connecting frame. The chain pin riveting device for increasing the stability of the chain has high working efficiency and can complete the connection of multiple chain sections at the same time. The chain shaft body, the first chain piece and the second chain piece are firmly fixed, so that the connection position is very accurate, thereby increasing the stability of the chain, and the device has strong durability.

[0004] Existing workbenches or equipment used for press-fitting pins and chain plates typically install and secure the pins and chain plates at both ends sequentially. However, the applicant has discovered that this method of connection and installation can significantly reduce the parallelism accuracy of the pins on both sides of the same chain plate due to operator adjustments and reversals. This can cause the resulting chain to deform and damage after repeated relative rotation of the two links, shortening the chain's service life and even causing equipment damage or safety accidents.

[0005] In response to the above problems, the utility model provides a workbench for bilateral synchronous press-fitting of pins and chain plates, which allows the connection and fixation between pins on both sides and the same chain plate to be completed at one time during the press-fitting process, and a press-fitting device including the workbench. Utility Model Content

[0006] The utility model provides a workbench for pin shaft-chain plate bilateral synchronous press-fitting, which allows one-time completion of the connection and fixation between pin shafts located on both sides and the same chain plate during the press-fitting process, and press-fitting equipment comprising the workbench.

[0007] The above technical objectives of the present invention are achieved through the following technical solutions:

[0008] The lifting mechanism is a pair of fixedly mounted on opposite sides of the vehicle frame, and the positioning plate is fixed with a key pad, and the positioning plate has a key sticking point, and the positioning plate has a key sticking point.

[0009] As a preferred embodiment of the present invention, the positioning socket includes a guide section for supporting the outer periphery of the pin shaft, and an expansion section for avoiding the supporting block.

[0010] As a preferred embodiment of the present invention, a detachable plug-in structure is formed between the supporting block and the base.

[0011] As a preferred embodiment of the present invention, a snap-fit positioning notch for limiting the chain plate is provided on the top of the movable supporting slider.

[0012] As a preferred embodiment of the present invention, a protective limiting column is further provided on the base.

[0013] A press-fitting device, comprising the above-mentioned pin-chain plate bilateral synchronous press-fitting workbench, and also comprising a press-fitting work head located above the pin-chain plate bilateral synchronous press-fitting workbench.

[0014] As a preferred embodiment of the present invention, a vertical through hole is provided on the press-fitting working head for avoiding the pin shaft.

[0015] In summary, the present invention can achieve the following multiple beneficial effects:

[0016] 1. The pin-chain plate bilateral synchronous press-fitting workbench provided in the present invention can press-fit and fix the chain plate to the pins on both sides at one time, avoiding the problem of reduced parallelism accuracy of the pins on both sides that may be caused by separate press-fitting on both sides, thereby effectively improving the smoothness of the rotational motion between the chain links and the durability of the components, and of course, improving the quality of the chain products produced.

[0017] 2. The pin-chain plate bilateral synchronous press-fitting workbench provided in the solution of the utility model has a positioning slot on one side of the guide column for positioning the pin on that side, and the structure on the other side for positioning the pin on the other side is designed to be a positioning hole on the movable supporting slider. During the press-fitting connection process under this structure, the operator can visually observe the brick pressing process from the side, intuitively judge whether the working process is normal and smooth, and also facilitate finding the cause of the problem or defect.

[0018] 3. The workbench for synchronous pin-chain plate press-assembly in this utility model takes into account the fact that, in actual production, the pins on both sides may have different heights and sizes. Therefore, based on the previously mentioned structure, a further optimization has been made, with a replaceable and adjustable plug-in structure designed between the support block on one side of the pin and the base, further enhancing the workbench's adaptability to different product models and specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the workbench for the pin-chain plate bilateral synchronous press-fitting;

[0020] Figure 2 This is a schematic diagram of the pin and chain placed on a workbench for pin-chain bilateral synchronous press-assembly;

[0021] Figure 3 A schematic diagram of the structure of the movable supporting slider when viewed from the bottom;

[0022] Figure 4 Schematic diagram of the positional relationship between the press-fitting work head and the workbench for the pin-chain plate bilateral synchronous press-fitting in the press-fitting equipment;

[0023] Figure 5 Schematic diagram of the vertical through-hole structure on the press-fit working head.

[0024] In the picture:

[0025] A——pin, B——chain plate;

[0026] 1——base, 101——protective limit column;

[0027] 2 - first guide column, 201 - positioning slot;

[0028] 3——Second guide column;

[0029] 4 - movable supporting slider, 401 - positioning socket, 4011 - guiding section, 4012 - expansion section, 402 - engaging positioning notch;

[0030] 5——Guide rail structure;

[0031] 6——support top return spring;

[0032] 7——support top block;

[0033] 8——Removable plug-in structure;

[0034] 9——press-fit working head, 901——vertical through hole. DETAILED DESCRIPTION

[0035] The following specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments as needed that do not contribute to creativity. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

[0036] This solution is achieved through the following technical means:

[0037] Embodiment: In this embodiment, a workbench for bilateral synchronous press-fitting of pins and chain plates that allows the connection and fixation between pins A located on both sides and the same chain plate B to be completed at one time during the press-fitting process, as well as a press-fitting device including the workbench are provided.

[0038] For the pin-chain plate double-sided synchronous press-fitting workbench, its structure can refer to the attached manual. Figure 1 The structure shown is used for detailed description. First, the workbench device includes a base 1 made of aluminum alloy or steel at the bottom, which serves as a base for installing other structural parts and supporting various components that need to be press-fitted and fixed. On the upper part of the base 1, there are provided a first guide column 2 and a second guide column 3 on both sides and extending vertically upward, and a movable supporting slider 4 for supporting the chain plate B is installed between the first guide column 2 and the second guide column 3. It should be further explained here that a guide rail structure 5 is formed between the two sides of the movable supporting slider 4 and the first guide column 2 and the second guide column 3 respectively. See the attached manual for details. Figure 1For example, after sliding slots corresponding to the guide columns on both sides are respectively opened on the front and rear sides of the movable supporting slider 4, the movable supporting slider 4 can be embedded from top to bottom between the guide columns on both sides, so that the movable supporting slider 4 can be lifted and moved in the vertical direction. Of course, after the movable supporting slider 4 moves downward following the chain plate B that needs to be press-fitted and completes the press-fitting process, it needs to be lifted up and reset. Therefore, a support return spring 6 is also provided between the bottom surface of the movable supporting slider 4 and the top surface of the base 1 to achieve the above effect.

[0039] In order to position the chain plate B and the pin shaft A at a specific position on the workbench and then press-fit them, a structural part for positioning and limiting the parts should be formed on the workbench for the pin shaft-chain plate bilateral synchronous press-fit. Figure 1 For example, a positioning slot 201 for limiting and fixing the pin A on one side can be formed on the upper part of the first guide column 2, and a positioning socket 401 that passes through the movable supporting slider 4 for the pin A on the other side can be formed. A supporting block 7 for supporting the pin A on the other side can also be provided on the side of the base 1 close to the second guide column 3. Under this structure, refer to the attached manual. Figure 2 As shown, the pin A on one side can be inserted into the positioning slot 201 in a vertical state, and the pin A on the other side can be inserted into the positioning socket 401 on the other side in the same vertical state. At the same time, the bottom of the pin A will abut against the top surface of the support block 7, and then the chain plate B is placed in a horizontal state on the top of the movable supporting slider 4.

[0040] Of course, as a preferred structure, a snap-fit positioning notch 402 for limiting the chain plate B can be provided on the top of the movable supporting slider 4, so as to limit the chain plate B in the horizontal direction, so as to prevent it from deflecting during the press-fitting process and ensure the accuracy of the press-fitting connection process. In addition, since the positioning socket 401 formed on the aforementioned movable supporting slider 4 will guide and position the pin A on this side during the entire press-fitting process to prevent it from deflecting, and the movable supporting slider 4 will sink and move together with the chain plate B during the press-fitting process, this may cause the movable supporting slider 4 to come into contact and interfere with the supporting top block 7 below. In order to avoid the occurrence of this problem, in this embodiment, refer to the attached manual. Figure 3 The enlarged schematic diagram of the structure given shows that the positioning socket 401 is designed to include a guide section 4011 for supporting the outer periphery of the pin shaft A, and an expansion section 4012 for avoiding the support block 7.

[0041] At the same time, in the present application, the inventors also took into account that in the actual production process, there are situations where the heights and sizes of the pins A on both sides are different. Therefore, based on the aforementioned structure, further optimization was carried out, and a replaceable and adjustable detachable plug-in structure 8 was designed between the support block 7 that supports the pin A on one side and the base 1, thereby further improving the adaptability of the workbench to products of different models and specifications. Specifically, the formation of the detachable plug-in structure 8 requires the opening of a slot on the aforementioned base 1, and then the support blocks 7 of different heights are vertically inserted into the slot, thereby achieving the support function for the pin A on this side at different heights.

[0042] Furthermore, in order to avoid fatigue failure of the support top return spring 6 due to excessive downward pressure of the movable supporting slider 4 during the actual pressing process, and to avoid damage to it due to collision with the base 1, a protective limit column 101 can be provided on the base 1 to limit the downward movement stroke of the movable supporting slider 4.

[0043] For the structural design of the press-fitting equipment including the aforementioned pin-chain plate double-sided synchronous press-fitting workbench, refer to the attached manual. Figure 4 and 5 As shown, its main body is similar to that of common press-fitting equipment, and also includes a press-fitting head 9 located above the workbench for the synchronous press-fitting of the pin and chain plate. However, it is important to note that in this press-fitting equipment, the press-fitting head 9 is provided with a vertical through-hole 901 to avoid contact with the pin A during the press-fitting process, which could affect the precise press-fit assembly.

[0044] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A workbench for pin-chain plate bilateral synchronous press-fitting, characterized by: The invention comprises a base (1) at the bottom, wherein a first guide column (2) and a second guide column (3) are arranged on both sides and extend vertically upward, and a movable supporting slider (4) for supporting the chain plate (B) is installed between the first guide column (2) and the second guide column (3), and a guide rail structure (5) is formed between the two sides of the movable supporting slider (4) and the first guide column (2) and the second guide column (3), so that the movable supporting slider (4) can move in the vertical direction. The movable supporting slider (4) is movable and moves upward and downward; a supporting return spring (6) is provided between the bottom surface of the movable supporting slider (4) and the top surface of the base (1); a positioning slot (201) is provided on the upper part of the first guide column (2) for limiting and fixing the pin shaft (A) on one side, and a positioning socket (401) is provided on the movable supporting slider (4) for the pin shaft (A) on the other side to pass through, and a supporting block (7) for supporting the pin shaft (A) on the other side is provided on the side of the base (1) close to the second guide column (3).

2. The workbench for pin-chain plate bilateral synchronous press-fitting according to claim 1, characterized in that: The positioning socket (401) includes a guide section (4011) for supporting the outer periphery of the pin shaft (A), and an expansion section (4012) for avoiding the supporting block (7).

3. The workbench for pin-chain plate bilateral synchronous press-fitting according to claim 2, characterized in that: A detachable plug-in structure (8) is formed between the supporting block (7) and the base (1).

4. The workbench for pin-chain plate bilateral synchronous press-fitting according to claim 3, characterized in that: A snap-fit positioning notch (402) for limiting the position of the chain plate (B) is provided on the top of the movable supporting slider (4).

5. The workbench for pin-chain plate bilateral synchronous press-fitting according to claim 4, characterized in that: A protective limiting column (101) is also provided on the base (1).

6. A press-fitting device, characterized in that: The invention comprises a workbench for the double-sided synchronous press-fitting of the pin shaft and the chain plate as claimed in any one of claims 1 to 5, and also comprises a press-fitting work head (9) located above the workbench for the double-sided synchronous press-fitting of the pin shaft and the chain plate.

7. The press-fitting device according to claim 6, characterized in that: The press-fitting working head (9) is provided with a vertical through hole (901) for avoiding the pin shaft (A).

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