An automatic chain riveting device

Abstract

This utility model discloses an automatic chain riveting device, including a base. A horizontally rotatable feeding wheel is provided on the top surface of the base. The side wall of the feeding wheel is evenly provided with several arc-shaped grooves that mate with rollers on the chain. An annular limiting seat is provided around the feeding wheel to position each chain, mate with the arc-shaped grooves. After the chain is inserted into the arc-shaped groove, the inner wall of the annular limiting seat abuts against the outer wall of the roller. The side wall of the annular limiting seat has a feed inlet corresponding to a single arc-shaped groove. Above two of the arc-shaped grooves is a riveting die that is movable up and down for riveting the chain. This utility model has the advantages of positioning the chain after winding it, preventing the chain from scattering during riveting and affecting the riveting process, and improving riveting efficiency.

Description

Technical Field

[0001] This utility model relates to an automatic riveting device, specifically an automatic chain riveting device. Background Technology

[0002] A chain is composed of a series of inner links, pins, and outer links connected together, driven by a gear called a sprocket. It is a simple, reliable, and efficient power transmission device. The individual links of the chain are connected together by pins and outer links. During the production process, the pins on the chain need to be riveted together using a riveting device. When the chain is riveted together, it needs to be positioned and fixed.

[0003] Chinese patent application CN211101396U discloses an automatic riveting device for roller chain production, including a base, a frame at the top of the base, a riveting cylinder mounted on the frame, a riveting head mounted on the telescopic end of the riveting cylinder, a motor installed inside the base, a feeding wheel mounted on the output end of the motor, the feeding wheel being rotatably mounted on the top of the base, a clamping mechanism on the left side of the feeding wheel, and a fixing mechanism on the right side of the feeding wheel.

[0004] In the aforementioned prior art, unriveted chains are wound onto the feeding wheel. Since the riveted chain structure is loosely fitted, there is a problem of scattering after winding, requiring reloading, which affects normal riveting work and reduces riveting efficiency. Utility Model Content

[0005] The purpose of this invention is to provide an automatic chain riveting device that solves the problems of easy chain scattering and reduced riveting efficiency in the existing technology.

[0006] The above-mentioned technical objective of this utility model is mainly achieved through the following technical solution: an automatic chain riveting device, including a base, a horizontally rotatable feeding wheel on the top surface of the base, a plurality of arc-shaped grooves uniformly provided on the side wall of the feeding wheel to cooperate with the rollers on the chain, an annular limiting seat provided on the periphery of the feeding wheel to position each chain in cooperation with the arc-shaped grooves, after the chain is inserted into the arc-shaped groove, the inner wall of the annular limiting seat abuts against the outer wall of the roller, and a feed port corresponding to a single arc-shaped groove is provided on the side wall of the annular limiting seat, wherein a riveting die for riveting the chain and capable of moving up and down is provided above two of the arc-shaped grooves.

[0007] As a further preferred technical solution of this utility model; the base has a cavity in the middle, the feeding wheel has a main shaft in the middle that extends downward through the base into the cavity, and a first transmission gear is provided on the side wall of the main shaft corresponding to the cavity.

[0008] As a further preferred technical solution of this utility model; a drive shaft that can move up and down and rotate is provided on the side adjacent to the first transmission gear, and a second transmission gear that meshes with the first transmission gear and a transmission wheel that is located below the second transmission gear and coaxially arranged with the second transmission gear are provided on the side wall of the drive shaft, and a tooth set that meshes with the first transmission gear is partially provided on the side wall of the transmission wheel.

[0009] As a further preferred technical solution of this utility model; the drive shaft has an upward-opening fixed cavity in the middle, the fixed cavity has a coaxially arranged and slidably fitted fixed shaft, the inner wall of the fixed cavity has an axially arranged limiting groove, the side wall of the fixed shaft has a limiting protrusion that cooperates with the limiting groove, and the top of the cavity has a drive motor for driving the fixed shaft to rotate.

[0010] As a further preferred technical solution of this utility model, the bottom of the chamber is provided with a limiting cylinder sleeved on the drive shaft, and the bottom of the fixed cavity is provided with a telescopic spring connected to the fixed shaft.

[0011] As a further preferred technical solution of this utility model; an annular fixing block is provided at the upper edge of the drive shaft, a magnetic component is provided on the annular fixing block, a fixing frame connected to the top of the chamber is sleeved on the side wall of the fixing shaft, and an electromagnet corresponding to and cooperating with the magnetic component is provided at the bottom of the fixing frame.

[0012] As a further preferred technical solution of this utility model, the top surface of the annular fixing block is provided with an annular slider, and the bottom surface of the fixing frame is provided with an annular groove that cooperates with the annular slider.

[0013] Therefore, this utility model has the advantages of positioning the chain after winding it, preventing the chain from falling off during riveting and affecting the riveting process, and improving riveting efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 yes Figure 1 Structural sectional view;

[0016] Figure 3 yes Figure 2 Enlarged view of the structure at point A in the image;

[0017] Figure 4 yes Figure 1 A schematic diagram of the structure of the second transmission gear and the transmission wheel. Detailed Implementation

[0018] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0019] like Figure 1-2 As shown, an automatic chain riveting device includes a base 1. A horizontally rotatable feeding wheel 2 is provided on the top surface of the base 1. The side wall of the feeding wheel 2 is evenly provided with a plurality of arc-shaped grooves 21 that mate with rollers on the chain. The arc-shaped grooves 21 are evenly distributed on the circumferential side wall of the feeding wheel 2. Each chain can be wound around the side wall of the feeding wheel 2 in the circumferential direction and locked within each arc-shaped groove 21. The arc-shaped grooves 21 provide positioning for each chain. The feeding wheel 2 can rotate around its axis, and the circumference of the feeding wheel 2 is provided with arc-shaped grooves 21 to position each chain. The annular limiting seat 3, after the chain is inserted into the arc-shaped groove 21, has its inner wall abutting against the outer wall of the roller. After the chain is wound around the feeding wheel 2, the rollers on each chain are locked in their respective arc-shaped grooves 21. The arc-shaped grooves 21 provide a cooperating limit on one side of the roller, while the annular limiting seat 3 provides a radial limit on the other side of the roller. The arc-shaped grooves 21 and the annular limiting seat 3 achieve overall limiting of the rollers, preventing the chain from scattering and detaching from the arc-shaped grooves 21, thus achieving effective positioning of the chain. This allows for rapid riveting of each chain by rotating the feeding wheel 2, ensuring the riveting process is completed smoothly. The stability of each chain is ensured, thereby enabling rapid positioning and riveting of the entire chain. The annular limiting seat 3 has a feed inlet 31 on its side wall corresponding to a single arc-shaped groove 21. A single chain enters through the feed inlet 31 and is positioned within the single arc-shaped groove 21. Simultaneously, the feeding wheel 2 rotates. After a single chain is positioned within the arc-shaped groove 21, subsequent chains follow suit and are inserted into the subsequent arc-shaped grooves 21 as the feeding wheel 2 rotates. This process gradually and automatically inserts each chain into the arc-shaped groove 21 until all chains are inserted, completing the chain winding process. During operation, the feeding wheel 2 rotates at a constant speed. After winding, the feeding wheel 2 rotates intermittently to adapt to the riveting action of the chain. The outer side of the chain abuts against the inner wall of the annular limiting seat 3, and the bottom of the chain is supported by the bottom of the annular limiting seat 3. The two arc-shaped grooves 21 are provided with riveting molds 41 that are used for riveting the chain and can move up and down. Multiple pillars are provided at the edge of the top surface of the base 1. A top plate is provided on the top of the pillars, and a press is provided on the top of the top plate. The riveting mold 41 is connected to the output shaft of the press. The press can drive the riveting mold to move down and press down the pin of the chain, thereby realizing the riveting of the chain.

[0020] like Figure 2 and 4As shown, the base 1 has a chamber 11 in the middle, and the feeding wheel 2 has a main shaft 22 in the middle that extends downward through the base 1 into the chamber 11. The main shaft 22 supports the rotation of the feeding wheel 2. The lower end of the main shaft 22 passes through the annular limiting seat 3 and the base 1 into the chamber 11, which can drive the feeding wheel 2 to rotate. A first transmission gear 23 is provided on the side wall of the main shaft 22 corresponding to the chamber 11. The first transmission gear 23 is located on the main shaft 22 and rotates synchronously with the main shaft 22. A drive shaft 24 that can move up and down and rotate is provided on the side adjacent to the first transmission gear 23. A second transmission gear 25 that meshes with the first transmission gear 23 and a transmission wheel 26 that is located below the second transmission gear 25 and coaxially arranged with the second transmission gear 25 are provided on the side wall of the drive shaft 24. The side wall of the drive wheel 26 is partially provided with a tooth set 261 that meshes with the first transmission gear 23. When the second transmission gear 25 meshes with the first transmission gear 23, it can rotate through the drive shaft 24, thereby driving the first transmission gear 23. This causes the first transmission gear 23 to drive the feeding wheel 2 to rotate through the main shaft 22, so as to achieve rapid winding of each chain. The drive wheel 26 is coaxially arranged with the drive shaft 24. When the tooth set 261 on the drive wheel 26 meshes with the first transmission gear 23, the drive wheel 26 rotates and can intermittently drive the first transmission gear 23 through the tooth set 261. This causes the first transmission gear 23 to drive the feeding wheel 2 to rotate intermittently through the main shaft 22, thereby adapting to the repeated riveting process of the chain by the riveting die.

[0021] like Figure 2As shown, the drive shaft 24 has an upward-opening fixed cavity 241 in the middle. A coaxially arranged and slidably fitted fixed shaft 27 is located within the fixed cavity 241. The fixed shaft 27 forms a sliding fit within the fixed cavity 241 of the drive shaft 24, allowing the drive shaft 24 to slide axially relative to the fixed shaft 27. This drives the second transmission gear 25 and the transmission wheel 26 to move longitudinally, switching the meshing components with the first transmission gear 23, so that the second transmission gear 25 or the transmission wheel 26 engages with the first transmission gear 23. The meshing mechanism changes the rotation state of the feeding wheel 2, allowing it to wind the chain via the second transmission gear 25. The transmission wheel 26 and gear set 261 also adapt to the intermittent rotation during chain riveting. An axially oriented limiting groove 242 is provided on the inner wall of the fixed cavity 241, and a limiting protrusion 270 that mates with the limiting groove 242 is provided on the side wall of the fixed shaft 27. The limiting groove 242 and the limiting protrusion 270 ensure that the rotation of the fixed shaft 27 can drive the drive shaft 24 to rotate. To maintain the axial movement of the drive shaft 24 relative to the fixed shaft 27, a drive motor 12 is provided at the top of the chamber 11 to drive the fixed shaft 27 to rotate. The drive motor 12 can drive the fixed shaft 27 to rotate, and the fixed shaft 27 can drive the drive shaft 24 to rotate synchronously. The drive shaft 24 can then drive the second transmission gear 25 and the transmission wheel 26 to rotate, thereby realizing the rotation of the feeding wheel 2. A limiting sleeve 13 is provided at the bottom of the chamber 11 and sleeved on the drive shaft 24. A telescopic spring 243 connected to the fixed shaft 27 is provided at the bottom of the fixed cavity 241. The limiting sleeve 13 is sleeved on the bottom of the drive shaft 24 and connected to the bottom of the chamber 11. The limiting sleeve 13 can support the stable rotation and axial movement of the drive shaft 24. The setting of the telescopic spring 243 is to increase the buffering effect on the movement of the drive shaft 24, reduce damage, and reduce vibration and noise. At the same time, when the second transmission gear 25 meshes with the first transmission gear 23, it can act on the drive shaft 24 to enhance the stability when the second transmission gear 25 meshes with the first transmission gear 23.

[0022] like Figure 2-3As shown, an annular fixing block 244 is provided at the upper edge of the drive shaft 24, and a magnetic element 245 is provided on the annular fixing block 244. The magnetic element 245 is a permanent magnet. A fixing frame 271 connected to the top of the chamber 11 is sleeved on the side wall of the fixing shaft 27. An electromagnet 272 corresponding to and cooperating with the magnetic element 245 is provided at the bottom of the fixing frame 271. The electromagnet 272 is controlled by an external circuit to change the direction of the magnetic field, thereby changing the state between it and the magnetic element 245. When the second transmission gear 25 meshes with the first transmission gear 23, the magnetic field direction between the electromagnet 272 and the magnetic element 245 is the same. The like poles of the electromagnet 272 and the magnetic element 245 repel each other. In cooperation with the telescopic spring 243, the second transmission gear 25 is stabilized in the state of meshing with the first transmission gear 23. After the chain is wound, the electromagnetic field direction is changed. The magnetic field direction of iron 272 causes the magnetic field directions between electromagnet 272 and magnetic component 245 to be opposite. The opposite poles of electromagnet 272 and magnetic component 245 attract each other, causing drive shaft 24 to move upward relative to fixed shaft 27 until the gear set 261 of transmission wheel 26 can intermittently transmit power to first transmission gear 23. The top surface of annular fixed block 244 is provided with annular slider 246, and the bottom surface of fixed frame 271 is provided with annular groove 273 that cooperates with annular slider 246. When electromagnet 272 and magnetic component 245 attract each other, annular slider 246 is located in annular groove 273, forming a sliding fit, which provides sliding support between fixed frame 271 and annular fixed block 244, ensuring that drive shaft 24 can rotate stably and smoothly, and reducing wear when fixed frame 271 and annular fixed block 244 come into contact.

[0023] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A chain automatic riveting apparatus comprising a base (1), characterized in that: The base (1) has a horizontally rotatable feeding wheel (2) on its top surface. The side wall of the feeding wheel (2) is evenly provided with several arc-shaped grooves (21) that cooperate with the rollers on the chain. The feeding wheel (2) is provided with an annular limiting seat (3) that cooperates with the arc-shaped grooves (21) to position each chain. After the chain is inserted into the arc-shaped groove (21), the inner wall of the annular limiting seat (3) abuts against the outer wall of the roller. The side wall of the annular limiting seat (3) is provided with a feed port (31) corresponding to a single arc-shaped groove (21). Above two of the arc-shaped grooves (21) is a riveting die (41) for riveting the chain and which can move up and down.

2. A chain automatic riveting apparatus according to claim 1, characterized by: The base (1) has a chamber (11) in the middle, and the feeding wheel (2) has a main shaft (22) in the middle that extends downward through the base (1) into the chamber (11). The main shaft (22) has a first transmission gear (23) on its side wall corresponding to the chamber (11).

3. A chain automatic riveting apparatus according to claim 2, characterized by: The first transmission gear (23) is provided with a drive shaft (24) that can move up and down and rotate. The drive shaft (24) has a second transmission gear (25) that meshes with the first transmission gear (23) and a transmission wheel (26) that is located below the second transmission gear (25) and coaxially arranged with the second transmission gear (25). The transmission wheel (26) has a tooth set (261) that meshes with the first transmission gear (23) on a partial side wall.

4. A chain automatic riveting apparatus according to claim 3, characterized by: The drive shaft (24) has an upward-opening fixed cavity (241) in the middle. The fixed cavity (241) has a coaxially arranged and slidably fitted fixed shaft (27). The inner wall of the fixed cavity (241) has an axially arranged limiting groove (242). The side wall of the fixed shaft (27) has a limiting protrusion (270) that cooperates with the limiting groove (242). The top of the chamber (11) has a drive motor (12) for driving the fixed shaft (27) to rotate.

5. A chain automatic clinching apparatus according to claim 4, characterized by: The bottom of the chamber (11) is provided with a limiting sleeve (13) sleeved on the drive shaft (24), and the bottom of the fixed chamber (241) is provided with a telescopic spring (243) connected to the fixed shaft (27).

6. A chain automatic riveting apparatus according to claim 4, wherein: An annular fixing block (244) is provided at the upper edge of the drive shaft (24), and a magnetic element (245) is provided on the annular fixing block (244). A fixing frame (271) connected to the top of the chamber (11) is sleeved on the side wall of the fixing shaft (27), and an electromagnet (272) corresponding to and cooperating with the magnetic element (245) is provided at the bottom of the fixing frame (271).

7. A chain automatic clinching apparatus according to claim 6, characterized in that: The top surface of the annular fixing block (244) is provided with an annular slider (246), and the bottom surface of the fixing frame (271) is provided with an annular groove (273) that cooperates with the annular slider (246).

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