A special fixture for metal chain processing

Abstract

This utility model relates to the field of metal processing equipment technology and discloses a special fixture for metal chain processing. The fixture includes a body and a clamping mechanism and a feeding control mechanism housed therein. The clamping mechanism includes a first cylinder, a moving block, a connecting rod, a rotating plate, and a clamping plate with a positioning groove. The first cylinder drives the moving block, which, through the connecting rod, rotates around a fixed column, thereby achieving synchronous and precise clamping of the metal chain by the clamping plates on both sides. The feeding control mechanism includes a second cylinder, a rack, a rotating ring meshing with the rack, and multiple baffle plates. The second cylinder drives the rotating ring to rotate through the rack, thereby controlling the synchronous opening and closing of multiple baffle plates for changing the collection box. Through the synergy of the above structures, this utility model achieves stable and precise positioning of the metal chain, improving processing quality. Simultaneously, the intelligent on / off control of the feeding port enables uninterrupted production, significantly improving the level of automation and overall efficiency.

Description

Technical Field

[0001] This utility model relates to the field of metal processing equipment technology, and in particular to a special fixture for metal chain processing. Background Technology

[0002] In the field of metal processing, fixtures are an indispensable piece of process equipment. Their main function is to accurately position and reliably clamp workpieces during machining to ensure machining accuracy and product quality. The rationality of fixture design directly affects production efficiency and the final quality of the product.

[0003] However, for special workpieces like metal chains, traditional general-purpose fixtures often fail to meet their machining requirements. Metal chains are flexible bodies composed of multiple independent links connected together, not rigid monoliths. This makes it difficult to form a stable support surface when clamped. When using ordinary flat clamping plates, the clamping force is usually concentrated at a few points, which not only easily causes damage or deformation to the chain links but also, due to the inherent gaps and degrees of freedom in the chain, makes it prone to shifting or twisting under machining impact forces, severely affecting machining accuracy and stability.

[0004] To address these issues, some attempts have been made in existing technologies, such as manually adjusting multiple clamping points. However, this method is cumbersome, inefficient, and struggles to guarantee the uniformity of clamping force and the repeatability of positioning accuracy. Especially in automated production lines, the lack of a structure capable of rapid, automatic, and synchronous centering and clamping makes it impossible to reliably secure specific processing sections of the chain. This has become a key technological bottleneck restricting the improvement of processing efficiency and quality in metal chains.

[0005] Therefore, this utility model proposes a special fixture for metal chain processing to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems of unstable clamping and inaccurate positioning of flexible workpieces such as metal chains in the existing special fixtures for metal chain processing, and the inability to carry out the processing and unloading process continuously, resulting in low automation and low production efficiency, this utility model aims to provide a special fixture for metal chain processing with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a special fixture for metal chain processing, including: a machine body, and a clamping mechanism and a feeding control mechanism disposed inside the machine body. A support plate is connected to the top of the machine body, and a feeding port is opened at the bottom of the machine body.

[0008] The clamping mechanism includes at least two sets of symmetrically arranged moving blocks, a cylinder for driving the moving blocks, a rotating plate, a connecting rod, and a clamping plate.

[0009] The movable block is slidably connected to the inner wall of the machine body, and the output end of cylinder one is fixedly connected to the movable block. The rotating plate is rotatably connected to the inside of the machine body via a fixed column. The two ends of the connecting rod are rotatably connected to the movable block and the rotating plate respectively via fixed blocks. The clamping plate is fixedly connected to the side of the movable block facing the center of the fixture.

[0010] Preferably, the clamping surface of the clamping plate is provided with a positioning groove that matches the shape of the chain links of the metal chain to be processed.

[0011] Preferably, the feeding control mechanism includes a plurality of baffles rotatably disposed around the feeding port for opening and closing the feeding port.

[0012] Preferably, the feeding control mechanism further includes a second cylinder, a rack, and a toothed rotating ring. The second cylinder is used to drive the rack to move. The rack meshes with the teeth on the rotating ring, and the rotating ring is connected to multiple baffles in a transmission connection.

[0013] Furthermore, the rotating ring and the barrier plate are connected by a sliding block and a sliding column. The sliding block is fixed to the inner circumferential wall of the rotating ring, and one end of the sliding column is connected to the sliding block and the other end is connected to the barrier plate.

[0014] Preferably, the feeding control mechanism further includes a protective shell, which is fixed inside the machine body and is used to guide and support the rack.

[0015] Preferably, the bottom of the machine body is also provided with a collection box, which is removably installed in the machine body and located directly below the discharge port.

[0016] Preferably, the support plate has holes for the metal chain to pass through.

[0017] This utility model has the following beneficial effects: 1. This utility model solves the problems of unstable clamping and inaccurate positioning of flexible irregular workpieces such as metal chains in the prior art by setting up a synchronous clamping mechanism that is driven by a cylinder to move the block, connecting rod and rotating plate, and opening a positioning groove on the clamping plate that is adapted to the metal chain links. It achieves the technical effect of stable and reliable clamping and accurate positioning, thereby improving the subsequent processing quality.

[0018] 2. This utility model solves the problem in the prior art that the processing operation must be interrupted due to the replacement of the finished product collection box, resulting in discontinuous production and low overall efficiency, by setting up a feeding control mechanism that is driven by a cylinder to link the rack, rotating ring and baffle plate. It achieves the technical effect of replacing the collection box without stopping the main processing flow, realizes continuous production, and significantly improves the level of automation and production efficiency.

[0019] 3. This utility model integrates the synchronous clamping mechanism and the unloading control mechanism into the same machine body, and both are pneumatically controlled. This solves the problems of the existing clamping structure having single function and low degree of automation, and achieves the technical effect of compact overall structure, coordinated action linkage and high degree of automation. It reduces the need for manual intervention and improves the reliability of equipment operation. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of a special fixture for metal chain processing proposed in this utility model; Figure 2 This is a schematic diagram of the moving block of a special fixture for metal chain processing proposed in this utility model; Figure 3 This is a schematic diagram of the rack structure of a special jig for metal chain processing proposed in this utility model; Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0021] Legend: 1. Body; 2. Clamping mechanism; 21. Cylinder 1; 22. Moving block; 23. Fixed block; 24. Connecting rod; 25. Rotating plate; 26. Fixed column; 27. Clamping plate; 3. Support plate; 4. Material feeding control mechanism; 41. Cylinder 2; 42. Rack; 43. Protective shell; 44. Baffle plate; 45. Sliding column; 46. Sliding block; 47. Rotating ring; 48. Tooth; 5. Collection box. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0023] Please refer to Figures 1 to 4 This utility model provides a special fixture for metal chain processing, which aims to solve the problems of inaccurate clamping and positioning and low efficiency caused by the inability to continuously carry out the processing and unloading process in existing metal chain processing fixtures.

[0024] like Figure 1 and Figure 2As shown, the special fixture for metal chain processing includes a body 1, and a clamping mechanism 2 and a feeding control mechanism 4 disposed inside the body 1. The body 1 serves as the mounting base for the entire device, providing installation space and support for the clamping mechanism 2 and the feeding control mechanism 4. A support plate 3 is fixedly connected to the top of the body 1, and holes are provided on the support plate 3 for the metal chain to pass through, so as to guide the metal chain to be processed into the working area of ​​the clamping mechanism 2. A feeding port is provided at the bottom of the body 1, and a collection box 5 for collecting finished products is retractably installed at the bottom of the body 1, and the collection box 5 is located directly below the feeding port.

[0025] The clamping mechanism 2 is used to clamp and fix the incoming metal chain. Its specific structure is as follows: The clamping mechanism 2 includes at least two sets of symmetrically arranged moving blocks 22, which are slidably connected to the inner wall of the machine body 1; the clamping mechanism 2 also includes a cylinder 21 for driving the moving blocks 22, the output end of which is fixedly connected to the moving blocks 22 to drive them to reciprocate along a preset path; to achieve synchronous movement of the clamping components on both sides, a rotating plate 25 is provided inside the clamping mechanism 2, which is rotatably connected to the inside of the machine body 1 via a fixed column 26, with the fixed column 26 serving as the rotation center of the rotating plate 25; the clamping mechanism 2 also includes a connecting rod 24, one end of which is rotatably connected to the moving block 22 via a fixed block 23. The other end of 24 is also rotatably connected to the end of the rotating plate 25 via the fixed block 23; the clamping plate 27 is fixedly connected to the side of the moving block 22 facing the center of the fixture. The clamping surface of the clamping plate 27 is provided with a positioning groove that matches the shape of the chain link of the metal chain to be processed. The setting of the positioning groove can ensure the precise fitting and positioning of the chain link and prevent slippage or rotation during processing. When the cylinder 21 is activated, it drives the moving block 22 to move. The moving block 22 drives the rotating plate 25 to rotate around the fixed column 26 via the connecting rod 24. The rotation of the rotating plate 25 then drives the moving block 22 on the other side to generate synchronous opposite or opposite movements via the connecting rod 24 on the other side, and finally realizes the synchronous clamping or loosening of the metal chain by the two clamping plates 27.

[0026] To address the issue of the inability to continuously process the machining and unloading steps, this special fixture for metal chain machining also includes an unloading control mechanism 4.

[0027] Please refer to the following carefully. Figure 3 and Figure 4The core structure of the feeding control mechanism 4 is described in detail below: The feeding control mechanism 4 includes multiple baffles 44, which are rotatably disposed around the periphery of the feeding port. The multiple baffles 44 work together to block the feeding port in the closed state and allow the feeding channel to open in the open state. The feeding control mechanism 4 also includes a drive assembly for driving the opening and closing of the baffles 44. The drive assembly includes a cylinder 41 fixedly installed inside the machine body 1. The output end of the cylinder 41 is connected to a rack 42, which is housed inside a protective shell 43. The protective shell 43 is fixed to the inner wall of the machine body 1 to provide guidance and support for the linear reciprocating motion of the rack 42. The feeding control mechanism 4 also includes a rotating ring 47, which is rotatably disposed inside the machine body 1. The outer peripheral wall of the rotating ring 47 is fixedly connected with teeth 48 that are adapted to the tooth shape of the rack 42. The rack 42 and the teeth 48 form a meshing connection.

[0028] Meanwhile, a sliding block 46 is fixedly connected to the inner circumferential wall of the rotating ring 47. The sliding block 46 is connected to the baffle plate 44 through the sliding column 45. During operation, the cylinder 41 drives the rack 42 to move linearly. The rack 42 drives the rotating ring 47 to rotate through the meshing with the teeth 48. The rotation of the rotating ring 47 drives the sliding block 46 on it to move along a circular trajectory. The sliding block 46 then drives the baffle plate 44 to rotate around its fulcrum through the sliding column 45, thus realizing the synchronous opening or closing of multiple baffle plates 44. This transmission structure, which drives the gear rack through the cylinder and then links multiple linkages, ensures the rapid opening and closing and reliable sealing of the discharge port, thereby realizing the safe replacement of the collection box 5 without stopping the main processing operation, which greatly improves the continuity and automation level of the overall production.

[0029] Based on the above embodiments, the present invention may further include the following preferred technical solutions: In a preferred embodiment, in order to improve the clamping stability and positioning accuracy of the metal chain, the clamping plate 27 has a positioning groove on its clamping surface that is adapted to the shape of the chain link of the metal chain to be processed. The contour of the positioning groove is perfectly matched with the shape of the chain link, so that the chain link can be embedded in it during clamping, thereby limiting the chain link in the horizontal and vertical directions and preventing slippage or rotation during processing.

[0030] As another preferred embodiment, in order to protect the rack and pinion transmission mechanism and ensure its smooth movement, the feeding control mechanism 4 also includes a protective shell 43. The protective shell 43 is fixed to the inner wall of the machine body 1 and houses the rack 42 inside it. On the one hand, it can prevent the debris generated during the processing from falling into the meshing area of ​​the rack 42 and the teeth 48 and causing jamming or wear. On the other hand, it also provides reliable guidance for the reciprocating linear motion of the rack 42.

[0031] As another preferred embodiment, in order to facilitate the collection and transfer of the processed parts, a collection box 5 is provided at the bottom of the machine body 1. The collection box 5 can be pulled out and installed in the machine body 1, for example, by setting a guide rail at the bottom of the machine body 1 and setting sliders on both sides of the collection box 5. When the collection box 5 is full, the operator can directly pull it out along the guide rail and quickly push it into the empty collection box 5.

[0032] As another preferred embodiment, in order to achieve preliminary guidance and positioning of the incoming material, a hole is provided on the support plate 3 at the top of the machine body 1. The size of the hole is adapted to the cross-sectional size of the metal chain, and the position is aligned with the clamping center of the clamping mechanism 2 in the vertical direction to ensure that the metal chain can smoothly and accurately enter the clamping area.

[0033] The implementation principle of this application embodiment is as follows: Before processing, the metal chain to be processed passes through the hole on the support plate 3 from top to bottom and enters the clamping area of ​​the clamping mechanism 2. When clamping is required, cylinder 21 is activated. The output end of cylinder 21 drives the moving block 22 to move in opposite directions. Since the moving block 22 is connected to the rotating plate 25 through the connecting rod 24 and the rotating plate 25 is rotatably connected to the machine body 1 through the fixed column 26, the movement of one moving block 22 will drive the other moving block 22 to move in opposite directions in complete synchronization through the linkage of the connecting rod 24 and the rotating plate 25. As the moving block 22 moves, the clamping plate 27 fixed on it also moves towards the center in sync. Finally, the positioning groove on the clamping plate 27 is engaged with the chain link of the metal chain to complete the precise clamping and fixing of the chain. When released, cylinder 21 moves in the opposite direction, which drives the components to move in the opposite direction synchronously.

[0034] Once the finished parts fall into the collection box 5 below and are full, the unloading control mechanism 4 is activated. Cylinder 2 41 actuates, driving rack 42 to move linearly within the guide of protective shell 43. Rack 42, through meshing with teeth 48, drives rotating ring 47 to rotate. The rotation of rotating ring 47 drives sliding block 46 fixed thereon to move. Sliding block 46 then drives multiple baffles 44 to rotate through sliding column 45 until multiple baffles 44 are completely closed, temporarily blocking the unloading port of machine body 1. At this time, the finished parts will accumulate above baffles 44. The operator can safely pull out the full collection box 5 and replace it with an empty collection box 5. After replacement, cylinder 2 41 reverses its action, driving baffles 44 to open the unloading port through the aforementioned transmission chain. The accumulated parts and subsequent parts fall into the new collection box 5. The entire process does not require stopping the main body's processing operations, achieving continuous production.

Claims

1. A special fixture for processing metal chains, comprising: The machine body (1) has a support plate (3) fixedly connected to its top, a feeding port is provided at the bottom of the machine body (1), a clamping mechanism (2) is provided inside the machine body (1), and a feeding control mechanism (4) is provided above the feeding port. The clamping mechanism (2) is characterized in that it comprises: at least two sets of symmetrically arranged moving blocks (22), the moving blocks (22) being slidably connected to the inner wall of the machine body (1); a cylinder (21), the output end of which is fixedly connected to the moving blocks (22) to drive the moving blocks (22) to move towards or away from each other; a rotating plate (25), which is rotatably connected to the inside of the machine body (1) via a fixed column (26); a connecting rod (24), the two ends of which are rotatably connected to the moving blocks (22) and the rotating plate (25) respectively via a fixed block (23); and a clamping plate (27), which is fixedly connected to the side of the moving blocks (22) facing the center of the clamp.

2. The special fixture for metal chain processing according to claim 1, characterized in that, The clamping surface of the clamping plate (27) is provided with a positioning groove that matches the shape of the chain link of the metal chain to be processed.

3. The special fixture for metal chain processing according to claim 1, characterized in that, The feeding control mechanism (4) includes a plurality of baffles (44), which are rotatably disposed around the periphery of the feeding port to open and close the feeding port.

4. The special fixture for metal chain processing according to claim 3, characterized in that, The feeding control mechanism (4) further includes: cylinder two (41), installed inside the machine body (1), rack (42), one end of the rack (42) is connected to the output end of cylinder two (41), rotating ring (47), the rotating ring (47) is rotatably disposed inside the machine body (1), and teeth (48) that mesh with the rack (42) are fixedly connected to the outer peripheral wall of the rotating ring (47), and the rotating ring (47) is connected to the plurality of baffles (44) in a transmission connection.

5. The special fixture for metal chain processing according to claim 4, characterized in that, The rotating ring (47) and the plurality of barrier plates (44) are connected by the following mechanism: a sliding block (46) fixedly connected to the inner circumferential wall of the rotating ring (47), and a sliding column (45), one end of the sliding column (45) being connected to the sliding block (46) and the other end being connected to the barrier plate (44).

6. The special fixture for metal chain processing according to claim 4, characterized in that, The feeding control mechanism (4) also includes a protective shell (43), which is fixed to the inner wall of the machine body (1) and is used to guide and support the rack (42).

7. The special fixture for metal chain processing according to claim 1, characterized in that, A collection box (5) is provided at the bottom of the machine body (1). The collection box (5) is removably installed in the machine body (1) and is located directly below the discharge port.

8. The special fixture for metal chain processing according to claim 1, characterized in that, The support plate (3) has holes for the metal chain to pass through.

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