Adaptive multi-specification nylon rod quick change type drawing jig

Abstract

The utility model relates to nylon bar processing equipment field especially, more particularly to a kind of self-adapting multi-specification nylon bar quick change type drawing fixture, the self-adapting multi-specification nylon bar quick change type drawing fixture includes: drawing machine body, clamping seat, multipurpose clamp jaw and change type subassembly, the top of drawing machine body is equipped with cylinder, the output end of cylinder is equipped with mounting seat, the inside symmetry sliding installation of mounting seat is equipped with clamping seat, the inboard of clamping seat is all rotationally installed with multipurpose clamp jaw, the side wall of multipurpose clamp jaw is equipped with flat mouth clamping area and V mouth clamping area, the self-adapting multi-specification nylon bar quick change type drawing fixture provided by the utility model when switching processing nylon bar of different diameters, without frequently disassembling and replacing clamp, the abrasion of equipment connecting part is reduced, the maintenance cost and failure rate of equipment are reduced, while product quality is improved, material waste is reduced, to effectively reduce overall production cost.

Description

Technical Field

[0001] This utility model relates to the field of nylon rod processing equipment, and in particular to an adaptive multi-specification nylon rod quick-change drawing fixture. Background Technology

[0002] In the field of nylon rod production and processing, the drawing process is one of the key links that determines the precision, surface quality and mechanical properties of the finished nylon rod. With the improvement of industrial automation and the increasing demand for diverse nylon rod specifications from downstream applications, the proportion of orders for nylon rod products with different diameters and lengths continues to rise, which puts forward higher requirements for the compatibility and production efficiency of drawing equipment. Currently, most mainstream nylon rod drawing machines on the market suffer from a common problem of limited functionality in their core clamping components. These clamps are typically designed for nylon rods of specific diameters, with fixed clamping structures that can only accommodate one type or a narrow range of workpiece sizes. In actual production, when switching to process nylon rods of different diameters, operators must follow a cumbersome process of disassembling, replacing, and recalibrating the clamps. This process not only consumes a significant amount of time and reduces the continuous operating efficiency of the production line, but also frequently disassembling and installing clamps can easily cause wear on the equipment's connecting parts. After long-term use, this may lead to positioning accuracy deviations, resulting in quality problems such as clamping misalignment and surface scratches during nylon rod drawing, increasing production costs and material waste.

[0003] Therefore, it is necessary to provide a new adaptive multi-specification nylon rod quick-change drawing fixture to solve the above-mentioned technical problems. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an adaptive multi-specification nylon rod quick-change drawing fixture.

[0005] The adaptive multi-specification nylon rod quick-change drawing fixture provided by this utility model includes: a drawing machine body, a clamping seat, a multi-purpose jaw, and a changing component. A cylinder is installed on the top of the drawing machine body, and a mounting seat is installed at the output end of the cylinder. A clamping seat is symmetrically and slidably installed inside the mounting seat. Multi-purpose jaws are rotatably installed on the inner side of the clamping seat. The side wall of the multi-purpose jaw is provided with a flat clamping area and a V-shaped clamping area. A changing component is installed between the multi-purpose jaw and the clamping seat. The changing component is used to fix the position of the multi-purpose jaw after changing the shape.

[0006] Preferably, the changing component includes: a trapezoidal block, a spring, and a trapezoidal groove. One of the two clamping seats has a mating groove inside. A spring is fixedly connected to the inner wall of the mating groove. The other end of the spring is fixedly connected to the trapezoidal block, and the trapezoidal block is slidably connected to the inner wall of the mating groove. Rotating rods are fixedly connected to the sides of the multi-purpose grippers that are far apart from each other. The rotating rods are placed inside the corresponding clamping seats and are rotatably connected to their inner walls. Two trapezoidal grooves are formed around the outer wall of the rotating rod closest to the trapezoidal block, and the included angle between the two trapezoidal grooves is 90 degrees. The trapezoidal block engages with at least one of the trapezoidal grooves.

[0007] Preferably, one end of the two rotating rods near the trapezoidal block extends out of the corresponding clamping seat and is fixedly connected to a rotating plate. The outer wall of the rotating rod is provided with a cross-shaped groove. The clamping seat corresponding to the trapezoidal block has a vertical insertion hole inside, which matches the cross-shaped groove. A pin is inserted into the insertion hole and passes through the cross-shaped groove.

[0008] Preferably, the tops of both multi-purpose grippers are fixedly connected to mounting blocks, wherein a square rod is fixedly connected inside one mounting block near the pin, and a square groove is opened inside the other mounting block, the square rod is placed inside the square groove and is slidably connected to its inner wall.

[0009] Preferably, a worm gear is rotatably connected inside the mounting base, and a crank handle is fixedly connected to the top of the worm gear extending out of the outer wall of the mounting base. A worm wheel is engaged on one side of the worm gear, and a bidirectional threaded rod is fixedly connected to the axis of the worm wheel. Both ends of the bidirectional threaded rod are rotatably connected to the inner wall of the mounting base.

[0010] Preferably, the outer wall of the bidirectional threaded rod is symmetrically threaded with sliders, and the inner side of the mounting base is provided with a clearance groove. The bottom end of each slider passes through the clearance groove and is fixedly connected to the corresponding clamping base.

[0011] Compared with related technologies, the adaptive multi-specification nylon rod quick-change drawing fixture provided by this utility model has the following beneficial effects: The design of the changeover assembly and the flat-mouth and V-mouth clamping areas of the multi-purpose gripper enables rapid switching between processing of nylon rods of various specifications. Operators only need to pull out the pin upwards to release the rotation restriction of the rotating rod, then hold the rotating plate and rotate it 90 degrees to make the multi-purpose gripper rotate. During the rotation, the trapezoidal block and the trapezoidal groove cooperate to complete the mechanical positioning. Finally, the pin is reinserted to form a mechanical lock, and the changeover is completed. The entire changeover process is simple to operate, without the need for cumbersome fixture disassembly, replacement, and recalibration, which greatly saves changeover time and improves the continuous operation efficiency of the production line. This fixture eliminates the need for frequent disassembly and replacement of clamps when switching between processing nylon rods of different diameters. This reduces wear on equipment connection points, lowers equipment maintenance costs and failure rates, while improving product quality and reducing material waste, thereby effectively reducing overall production costs. Attached Figure Description

[0012] Figure 1 A schematic diagram of the structure of the adaptive multi-specification nylon rod quick-change drawing fixture provided by this utility model; Figure 2 for Figure 1 The diagram shows the structure of the mounting base; Figure 3 for Figure 2 The diagram shows the structure at point A. Figure 4 for Figure 3 The diagram shows the structure at point B. Figure 5 for Figure 2 The diagram shows the structure of the multi-purpose gripper.

[0013] The following are the labels in the diagram: 1. Drawing machine body; 2. Cylinder; 3. Mounting base; 4. Clamping base; 5. Multi-purpose gripper; 6. Trapezoidal block; 7. Spring; 8. Trapezoidal groove; 9. Rotating rod; 11. Rotating plate; 12. Cross-shaped groove; 13. Pin; 14. Mounting block; 15. Square rod; 16. Worm gear; 17. Worm wheel; 18. Double-sided threaded rod; 19. Slider. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0015] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0016] Please see Figures 1 to 5An adaptive multi-specification nylon rod quick-change drawing fixture is disclosed. The fixture comprises a drawing machine body 1, a clamping seat 4, multi-purpose grippers 5, and a changing assembly. A cylinder 2 is mounted on the top of the drawing machine body 1, and a mounting seat 3 is mounted on the output end of the cylinder 2. The clamping seat 4 is symmetrically and slidably mounted inside the mounting seat 3. Multi-purpose grippers 5 are rotatably mounted on the inner sides of the clamping seat 4. The side walls of the multi-purpose grippers 5 are provided with a flat-mouth clamping area and a V-mouth clamping area. A changing assembly is installed between the multi-purpose gripper 5 and the gripping seat 4. The changing assembly is used to fix the position of the multi-purpose gripper 5 after changing its shape. The changing assembly includes a trapezoidal block 6, a spring 7, and a trapezoidal groove 8. One of the two gripping seats 4 has a mating groove inside. The inner wall of the mating groove is fixedly connected to the spring 7, and the other end of the spring 7 is fixedly connected to the trapezoidal block 6. The trapezoidal block 6 is slidably connected to the inner wall of the mating groove. A rotating rod 9 is fixedly connected to the side of the multi-purpose gripper 5 that is far apart from each other. All rods 9 are placed inside the corresponding clamping seats 4 and are rotatably connected to their inner walls. Two trapezoidal grooves 8 are formed around the outer wall of one of the rotating rods 9 near the trapezoidal block 6, and the included angle between the two trapezoidal grooves 8 is 90 degrees. The trapezoidal block 6 is engaged with at least one of the trapezoidal grooves 8. One end of the two rotating rods 9 near the trapezoidal block 6 extends out of the corresponding clamping seat 4 and is fixedly connected to a rotating plate 11. The outer wall of the rotating rod 9 is provided with a cross-shaped groove 12. A vertical insertion hole is formed inside the clamping seat 4 corresponding to the trapezoidal block 6. The insertion hole matches the cross-shaped groove 12. A pin 13 is inserted into the insertion hole and passes through the cross-shaped groove 12. Mounting blocks 14 are fixedly connected to the tops of the two multi-purpose grippers 5. A square rod 15 is fixedly connected inside the mounting block 14 near the pin 13. A square groove is formed inside the other mounting block 14. The square rod 15 is placed inside the square groove and is slidably connected to its inner wall.

[0017] It should be noted that during the changeover, pull out the pin 13 upwards to release the rotation restriction of the rotating rod 9; then, hold the rotating plate 11 and rotate it 90 degrees clockwise. The rotating plate 11 drives the fixedly connected rotating rod 9 to rotate synchronously. Since the rotating rod 9 is rigidly connected to the multi-purpose gripper 5, the multi-purpose gripper 5 rotates synchronously with the rotating rod 9. At the same time, through the sliding engagement of the square rod 15 and the square groove in the top mounting block 14, the driving force is transmitted to the multi-purpose gripper 5 on the other side, realizing the synchronous rotation of the two grippers. During the rotation, the trapezoidal groove 8 originally engaged on the outer wall of the rotating rod 9 squeezes the trapezoidal block 6, causing it to overcome the elastic force of the spring 7 and move into the mating groove. When the rotating rod 9 rotates 90 degrees... After a certain period of time, the adjacent trapezoidal groove 8 rotates to the position corresponding to the trapezoidal block 6. The spring 7 releases the stored elastic potential energy, pushes the trapezoidal block 6 out and precisely engages with the trapezoidal groove 8, completing the mechanical positioning. Then, the pin 13 is reinserted into the insertion hole of the clamping seat 4 and passes through the cross-shaped groove 12 of the rotating rod 9 to form a mechanical lock, ensuring that the V-mouth clamping area of ​​the multi-purpose gripper 5 remains stable.

[0018] Please see Figure 2 and Figure 4 The mounting base 3 is internally connected to a worm gear 16. The top end of the worm gear 16 extends out of the outer wall of the mounting base 3 and is fixedly connected to a crank handle. A worm wheel 17 is engaged on one side of the worm gear 16. A double-threaded rod 18 is fixedly connected to the axis of the worm wheel 17, and both ends of the double-threaded rod 18 are rotatably connected to the inner wall of the mounting base 3. A slider 19 is symmetrically threaded on the outer wall of the double-threaded rod 18. A clearance groove is provided on the inner side of the mounting base 3. The bottom end of the slider 19 passes through the clearance groove and is fixedly connected to the corresponding clamping seat 4.

[0019] It should be noted that the meshing transmission of the worm gear 17 and worm 16 has a self-locking function to ensure the stability of clamping.

[0020] The working principle of the adaptive multi-specification nylon rod quick-change drawing fixture provided by this utility model is as follows: In the initial state of the equipment, the flat clamping area of ​​the multi-purpose gripper 5 is pre-aligned with the processing station, which is suitable for processing nylon rods with smaller diameters; at this time, the mechanical structure is in a precise locking state: the pin 13 passes through the cross-shaped groove 12 and is firmly inserted into the insertion hole of the clamping seat 4; under the continuous elastic force of the spring 7, the trapezoidal block 6 is tightly engaged with one of the trapezoidal grooves 8 on the outer wall of the rotating rod 9, ensuring that the flat clamping surface of the multi-purpose gripper 5 remains horizontal and stable, forming a double positioning; When processing small-sized nylon rods, the operator places the workpiece between the flat-mouth clamping areas of the two multi-purpose jaws 5 and rotates the crank handle on top of the mounting base 3 clockwise. The crank handle drives the worm gear 16 to rotate synchronously, and the rotational motion is transmitted to the bidirectional threaded rod 18 through the meshing transmission between the worm gear 16 and the worm wheel 17. Since the threads at both ends of the bidirectional threaded rod 18 turn in opposite directions, the sliders 19 symmetrically connected to its outer wall move relative to each other along the axial direction. The sliders 19 pass through the clearance groove on the inner side of the mounting base 3, causing the two clamping seats 4 to move closer synchronously. As the clamping seats 4 move, the flat-mouth clamping areas of the multi-purpose jaws 5 gradually come into contact with the surface of the nylon rod until the preset clamping force is reached, at which point the crank handle is stopped, and the workpiece is clamped and fixed. After the cylinder 2 is started, its output end pushes the mounting base 3 to move in the drawing direction, and the nylon rod is drawn through the clamping assembly. When switching to process large-size nylon rods, the clamping mode needs to be changed to a V-groove clamping area. The specific changeover steps are as follows: The operator pulls the pin 13 upwards, so that it is completely disengaged from the cross-shaped groove 12 of the rotating rod 9 and the insertion hole of the clamping seat 4, thereby releasing the rotation restriction of the rotating rod 9. Next, hold the rotating plate 11 and rotate it 90 degrees clockwise. The rotating plate 11 drives the fixedly connected rotating rod 9 to rotate synchronously. Since the rotating rod 9 is rigidly connected to the multi-purpose gripper 5, the multi-purpose gripper 5 rotates synchronously with the rotating rod 9. At the same time, through the sliding engagement of the square rod 15 and the square groove in the top mounting block 14, the driving force is transmitted to the multi-purpose gripper 5 on the other side, realizing the synchronous rotation of the two grippers. During the rotation, the trapezoidal groove 8 originally engaged with the outer wall of the rotating rod 9 squeezes the trapezoidal block 6, causing it to overcome the elastic force of the spring 7 and move into the mating groove; when the rotating rod 9 rotates 90 degrees, the adjacent trapezoidal groove 8 rotates to the position corresponding to the trapezoidal block 6, the spring 7 releases the stored elastic potential energy, pushes the trapezoidal block 6 out and precisely engages with the trapezoidal groove 8, completing the mechanical positioning; Next, the pin 13 is reinserted into the insertion hole of the clamping seat 4 and passes through the cross-shaped groove 12 of the rotating rod 9 to form a mechanical lock, ensuring that the V-mouth clamping area of ​​the multi-purpose gripper 5 remains stable. After the conversion is completed, the large-sized nylon rod is placed in the V-shaped clamping area formed by two multi-purpose grippers 5. The V-shaped structure, through the principle of automatic centering of the inclined plane, can adapt to workpieces of different diameters and ensure that the clamping center remains unchanged. Turning the crank handle drives the bidirectional threaded rod 18 to rotate through the meshing transmission of the worm gear 16 and the turbine, and drives the clamping seat 4 to move relative to it through the slider 19, so that the V-shaped clamping area gradually tightens and fits the surface of the nylon rod. Due to the self-locking characteristics of the V-shaped structure, the clamping force is adaptively adjusted as the workpiece diameter increases, avoiding workpiece damage caused by over-clamping. After clamping is completed, the cylinder 2 is started to drive the mounting seat 3 and the workpiece to move along the preset trajectory to complete the drawing process.

[0021] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An adaptive multi-specification nylon rod quick-change drawing fixture, characterized in that, include: The drawing machine body (1) has a cylinder (2) installed on the top of the drawing machine body (1) and a mounting seat (3) installed at the output end of the cylinder (2). Clamping seat (4) is symmetrically and slidingly installed inside the mounting seat (3); Multi-purpose gripper (5) is rotatably installed on the inner side of the gripper base (4). The side wall of the multi-purpose gripper (5) is provided with a flat gripping area and a V-shaped gripping area. A change-up assembly is installed between the multi-purpose gripper (5) and the clamping seat (4). The change-up assembly is used to fix the position of the multi-purpose gripper (5) after it has been changed.

2. The adaptive multi-specification nylon rod quick-change drawing fixture according to claim 1, characterized in that, The changing component includes: a trapezoidal block (6), a spring (7) and a trapezoidal groove (8). One of the two clamping seats (4) has a mating groove inside. The inner wall of the mating groove is fixedly connected to the spring (7). The other end of the spring (7) is fixedly connected to the trapezoidal block (6). The trapezoidal block (6) is slidably connected to the inner wall of the mating groove. The sides of the multi-purpose grippers (5) that are far apart from each other are fixedly connected to rotating rods (9). The rotating rods (9) are all placed inside the corresponding clamping seat (4) and are rotatably connected to their inner walls. The outer wall of the rotating rod (9) closest to the trapezoidal block (6) has two trapezoidal grooves (8) around its circumference. The included angle between the two trapezoidal grooves (8) is 90 degrees. The trapezoidal block (6) is engaged with at least one of the trapezoidal grooves (8).

3. The adaptive multi-specification nylon rod quick-change drawing fixture according to claim 2, characterized in that, One end of one of the two rotating rods (9) near the trapezoidal block (6) extends out of the corresponding clamping seat (4) and is fixedly connected to a rotating plate (11). The outer wall of the rotating rod (9) is provided with a cross-shaped groove (12). The clamping seat (4) corresponding to the trapezoidal block (6) is provided with a vertical insertion hole inside. The insertion hole matches the cross-shaped groove (12). A pin (13) is inserted into the insertion hole and passes through the cross-shaped groove (12).

4. The adaptive multi-specification nylon rod quick-change drawing fixture according to claim 3, characterized in that, The top of each of the two multi-purpose grippers (5) is fixedly connected to a mounting block (14). A square rod (15) is fixedly connected inside one mounting block (14) near the pin (13). A square groove is opened inside the other mounting block (14). The square rod (15) is placed inside the square groove and is slidably connected to its inner wall.

5. The adaptive multi-specification nylon rod quick-change drawing fixture according to claim 1, characterized in that, The mounting base (3) is internally connected to a worm gear (16). The top of the worm gear (16) extends out of the outer wall of the mounting base (3) and is fixedly connected to a crank handle. A worm wheel (17) is engaged on one side of the worm gear (16). A double-threaded rod (18) is fixedly connected at the axis of the worm wheel (17), and both ends of the double-threaded rod (18) are rotatably connected to the inner wall of the mounting base (3).

6. The adaptive multi-specification nylon rod quick-change drawing fixture according to claim 5, characterized in that, The outer wall of the bidirectional threaded rod (18) is symmetrically threaded with sliders (19). The inner side of the mounting base (3) is provided with a clearance groove. The bottom end of the slider (19) passes through the clearance groove and is fixedly connected to the corresponding clamping base (4).

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