A thread rolling machine for preventing workpiece deviation

Abstract

The utility model discloses a kind of prevent workpiece deviation's thread rolling machine, including base, the top of one side of base is fixedly connected with first support. The utility model, by the interaction of the inclined surface of top bar and transmission frame when moving, drive limiting plate close to or away from first support, to adjust the clamping force of bar stock dynamically, when pushing material plate pushes material, limiting plate moves to first support direction, and is pressed against bar stock, and bar stock is positioned, by pushing material plate bar stock is pushed to processing position, when pushing material plate resets, by top bar and transmission frame drive limiting plate away from bar stock, avoid pressing tightly bar stock, so that bar stock normal unloading, this elasticity design avoids the unloading difficulty caused by too small gap, and prevent the inaccuracy of positioning caused by too large gap, ensure that bar stock is always in stable position in the process of feeding and thread rolling, significantly reduce the deviation phenomenon.

Description

Technical Field

[0001] This utility model relates to the field of thread rolling technology, specifically a thread rolling machine for preventing workpiece misalignment. Background Technology

[0002] A thread rolling machine is a process that uses a pair of thread rolling plates with corresponding thread profiles to perform relative reciprocating motion, causing the blank placed between them to undergo plastic deformation in a cold state to form external threads.

[0003] Current thread rolling machines, such as the thread rolling machine for shaft workpiece processing proposed in publication number CN220178071U, include a base plate and a thread rolling machine body, a mounting frame, an automatic feeding mechanism, and a collecting mechanism mounted on the base plate. The thread rolling machine body is mounted on the base plate, and the mounting frame is mounted on the base plate. The mounting frame is located on one side of the thread rolling machine body and has a horizontally arranged support plate. The automatic feeding mechanism is mounted on the support plate, and its input end is located at the working end of the thread rolling machine body. The collecting mechanism is mounted on the base plate. This application, through the automatic feeding mechanism, can automatically transport the shaft workpiece into the thread rolling machine body for processing. At the same time, it can effectively position the shaft workpiece, thereby preventing deviation when the shaft workpiece is fed into the thread rolling machine body, which would lead to shaft workpiece processing failure and cause the thread rolling machine body to malfunction. The collecting mechanism collects the processed shaft workpiece for easy handling by the operator.

[0004] While existing thread rolling machines prevent workpiece misalignment during machine feeding via automatic feeding mechanisms, it has been found that the fixed dimensions of the automatic feeding components can cause issues. A small gap between the feed size and the workpiece size can affect workpiece feeding, while a large gap results in poor positioning accuracy and slight misalignment, making them inconvenient to use. Therefore, we propose a thread rolling machine designed to prevent workpiece misalignment to address these problems. Utility Model Content

[0005] The purpose of this invention is to provide a thread rolling machine that prevents workpiece misalignment, thereby solving the problems currently found in the market as described in the background section.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a thread rolling machine for preventing workpiece displacement, comprising a base, a first bracket fixedly connected to the top of one side of the base, and a second bracket fixedly connected to the top of the base near the first bracket, wherein... A controller is installed on the outside of the second bracket, a thread rolling mechanism is provided on the second bracket, a support is fixedly connected to the first bracket near the middle, a fixed thread rolling plate is installed on the first bracket on the side corresponding to the second bracket, a feeding rack is fixedly connected to the first bracket near the support, and a baffle is fixedly connected to the first bracket near the fixed thread rolling plate. The feeding rack holds bar stock, the support is equipped with a hydraulic rod, and a pusher plate is installed on the telescopic end of the hydraulic rod near the second support. A limit plate is provided on the side of the feeding rack and the baffle away from the first support. The limit plate is elastically set with the first support. When the pusher plate moves, it drives the limit plate to move closer to or away from the first support through a transmission mechanism.

[0007] Preferably, the thread rolling mechanism includes a motor, the motor is mounted on the side of the second bracket near the top, a transmission wheel is mounted on the shaft end of the motor, a movable thread rolling plate is vertically slidably connected to the side of the second bracket near the fixed thread rolling plate, a transmission rod is rotatably connected to the top of the movable thread rolling plate, and the end of the transmission rod away from the movable thread rolling plate is rotatably connected to the side of the transmission wheel.

[0008] Preferably, a notch is provided at the bottom center of the baffle, and a spring piece is fixedly connected to the top inner side of the notch.

[0009] Preferably, the distance between the baffle and the bottom of the feeding rack to the support is greater than the outer diameter of the bar stock, and the distance between the bottom of the spring sheet and the support in the initial state is less than the outer diameter of the bar stock.

[0010] Preferably, the transmission mechanism includes guide rod grooves. The first bracket has guide rod grooves symmetrically opened on both sides of the limiting plate. A guide rod passes through the guide rod groove. One end of the guide rod is fixedly connected to the limiting plate. An end plate is fixedly connected to the end of the guide rod away from the limiting plate. A spring is sleeved on the guide rod between the end plate and the first bracket. A transmission frame is fixedly connected to the limiting plate at the position corresponding to the push plate. A top rod is fixedly connected to the side of the push plate corresponding to the transmission frame.

[0011] Preferably, the side of the transmission frame closest to the second support is an inclined surface, and the end of the transmission frame is smoothly connected to the limiting plate through the inclined surface.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention utilizes a flexibly designed limiting plate and transmission mechanism. When the pusher plate is driven to move by a hydraulic rod, the interaction between the push rod and the inclined surface of the transmission frame causes the limiting plate to move closer to or away from the first support, thereby dynamically adjusting the clamping force on the bar stock. When the pusher plate pushes the bar stock, the limiting plate moves towards the first support, abutting against the bar stock and limiting its movement. The pusher plate then pushes the bar stock to the processing position. When the pusher plate resets, the push rod and transmission frame move the limiting plate away from the bar stock, preventing it from pressing against the bar stock and allowing it to be fed normally. This flexible design avoids feeding difficulties caused by excessively small gaps and prevents inaccurate positioning caused by excessively large gaps, ensuring that the bar stock remains in a stable position during feeding and thread rolling, significantly reducing deviation.

[0013] This invention features a notch at the bottom of the baffle and a spring clip. In the initial state, the distance from the bottom of the spring clip to the support is less than the outer diameter of the bar stock, causing the bar stock to experience slight pressure from the spring clip as it passes through, preventing it from rolling or sliding after being fed. At the same time, the distance from the bottom of the baffle and the bottom of the feeding rack to the support is greater than the outer diameter of the bar stock, ensuring that the bar stock smoothly enters the processing area, further improving the reliability of feeding and processing accuracy. When the bar stock is pushed by the pusher plate, it pushes the spring clip aside and moves to the processing position. Simultaneously, the pusher plate blocks the bottom of the baffle and the feeding rack, preventing the bar stock from continuing to be fed. After the pusher plate resets, the spring clip also resets. After the pusher plate leaves the bottom of the baffle and the feeding rack, the bar stock automatically falls to the bottom of the baffle and the feeding rack under gravity.

[0014] In this invention, the controller extends the hydraulic rod, pushing the pusher plate towards the second support. During the forward movement of the pusher plate, the push rod on it is misaligned with the transmission frame, and the spring drives the limiting plate to move towards the first support, abutting the bar material from the side to prevent the bar material from shifting when the pusher plate pushes it. After processing, the hydraulic rod retracts, causing the pusher plate to retreat. The push rod on the pusher plate contacts the inclined surface of the transmission frame, and the push rod and transmission frame drive the limiting plate to overcome the spring force and move away from the bar material, allowing the bar material to be fed normally. This process realizes the linkage between feeding and clamping, ensuring that the bar material is firmly fixed during the process of being pushed to the thread rolling station, effectively preventing deviation. Furthermore, the movement of the limiting plate is guided by the guide rod groove and guide rod to prevent the limiting plate from shifting. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a three-dimensional structural diagram of the present invention; Figure 3 This utility model Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0016] In the diagram: 1. Base; 2. First support; 3. Second support; 4. Controller; 5. Motor; 6. Transmission wheel; 7. Moving thread rolling plate; 8. Transmission rod; 9. Support; 10. Fixed thread rolling plate; 11. Feed rack; 12. Baffle; 13. Bar stock; 14. Notch; 15. Spring; 16. Hydraulic rod; 17. Push plate; 18. Limiting plate; 19. Guide rod groove; 20. Guide rod; 21. End plate; 22. Spring; 23. Transmission frame; 24. Top rod. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1 to 3 This utility model provides a technical solution: a thread rolling machine for preventing workpiece displacement, comprising a base 1, a first support 2 fixedly connected to the top of one side of the base 1, and a second support 3 fixedly connected to the top of the side of the base 1 near the first support 2, wherein... A controller 4 is installed on the outside of the second bracket 3. A thread rolling mechanism is provided on the second bracket 3. A support 9 is fixedly connected to the first bracket 2 near the middle. A fixed thread rolling plate 10 is installed on the first bracket 2 on the side corresponding to the second bracket 3. A feeding rack 11 is fixedly connected to the top of the first bracket 2 near the support 9. A baffle 12 is fixedly connected to the top of the first bracket 2 near the fixed thread rolling plate 10. A bar stock 13 is placed on the feeding rack 11, and a hydraulic rod 16 is installed on the support 9. A pusher plate 17 is installed on the telescopic end of the hydraulic rod 16 near the second support 3. A limit plate 18 is provided on the side of the feeding rack 11 and the baffle 12 away from the first support 2. The limit plate 18 is elastically set with the first support 2. When the pusher plate 17 moves, it drives the limit plate 18 to move closer to or away from the first support 2 through the transmission mechanism. Through the elastically configured limiting plate 18 and transmission mechanism, when the pusher plate 17 is driven to move by the hydraulic rod 16 (the driving principle of the hydraulic rod 16 is a commonly used existing technology, which is directly referenced in this solution, so its control principle is not explained in detail), the interaction between the top rod 24 and the inclined surface of the transmission frame 23 causes the limiting plate 18 to move closer to or away from the first support 2, thereby dynamically adjusting the clamping force on the bar stock 13. When the pusher plate 17 pushes the bar stock, the limiting plate 18 moves towards the first support 2, abuts against the bar stock 13, and limits the bar stock 13. The pusher plate 17 pushes the bar stock 13 to the processing position. When the pusher plate 17 resets, the top rod 24 and the transmission frame 23 drive the limiting plate 18 away from the bar stock 13 to avoid pressing against the bar stock 13, so that the bar stock 13 can be fed normally. This elastic design avoids the difficulty of feeding due to the small gap and prevents the inaccurate positioning due to the large gap, ensuring that the bar stock 13 is always in a stable position during feeding and thread rolling, and significantly reducing the deviation phenomenon.

[0019] Please see Figures 1 to 3 The thread rolling mechanism includes a motor 5. The motor 5 is mounted on the side of the second bracket 3 near the top. A transmission wheel 6 is mounted on the shaft end of the motor 5. A movable thread rolling plate 7 is vertically slidably connected to the side of the second bracket 3 near the fixed thread rolling plate 10. A transmission rod 8 is rotatably connected to the top of the movable thread rolling plate 7. The end of the transmission rod 8 away from the movable thread rolling plate 7 is rotatably connected to the side of the transmission wheel 6. The controller 4 controls the motor 5 to work, so that the motor 5 drives the transmission wheel 6 to rotate. The transmission wheel 6 drives the movable thread rolling plate 7 to move up and down reciprocally through the transmission rod 8. (The movable thread rolling plate 7 and the second bracket 3 are slidably connected by a groove and a slider. The sliding structure adopts the existing commonly used technology, so its specific structure is not shown, nor is its sliding structure described in detail.)

[0020] Please see Figures 1 to 3A notch 14 is provided at the bottom center of the baffle 12. A spring piece 15 is fixedly connected to the top inner side of the notch 14. The distance between the bottom of the baffle 12 and the support 9 is greater than the outer diameter of the bar stock 13. In the initial state, the distance between the bottom of the spring piece 15 and the support 9 is less than the outer diameter of the bar stock 13. The notch 14 at the bottom of the baffle 12 and the spring piece 15 are provided. In the initial state, the distance between the bottom of the spring piece 15 and the support 9 is less than the outer diameter of the bar stock 13, so that the bar stock 13 is subjected to slight pressure from the spring piece 15 when passing through, preventing it from rolling or sliding after being discharged. At the same time, the baffle 12 and the support 9 are connected to the support 9. The distance from the bottom of the material rack 11 to the support 9 is greater than the outer diameter of the bar stock 13, ensuring that the bar stock 13 enters the processing area smoothly, further improving the reliability of feeding and processing accuracy. When the bar stock 13 is pushed by the pusher plate 17, the bar stock 13 pushes the spring piece 15 and moves to the processing position. At the same time, the pusher plate 17 blocks the bottom of the baffle 12 and the feeding rack 11 to prevent the bar stock 13 from continuing to be fed. After the pusher plate 17 is reset, the spring piece 15 is also reset. After the pusher plate 17 leaves the bottom of the baffle 12 and the feeding rack 11, the bar stock 13 automatically falls to the bottom of the baffle 12 and the feeding rack 11 under gravity.

[0021] Please see Figures 1 to 3 The transmission mechanism includes guide rod grooves 19. The first support 2 has guide rod grooves 19 symmetrically opened on both sides of the limiting plate 18. A guide rod 20 passes through the guide rod groove 19. One end of the guide rod 20 is fixedly connected to the limiting plate 18, and the end of the guide rod 20 away from the limiting plate 18 is fixedly connected to an end plate 21. A spring 22 is sleeved on the guide rod 20 between the end plate 21 and the first support 2. A transmission frame 23 is fixedly connected to the limiting plate 18 at the position corresponding to the push plate 17. A top rod 24 is fixedly connected to the side of the push plate 17 corresponding to the transmission frame 23. The side of the transmission frame 23 near the second support 3 is inclined, and the end of the transmission frame 23 forms a smooth transition connection with the limiting plate 18 through the inclined surface. The controller 4 controls the hydraulic rod 16 to extend, pushing the push plate 17 towards the second support 3. The push plate 17 moves forward... During the process, the top rod 24 on it is misaligned with the transmission frame 23. The spring 22 drives the limiting plate 18 to move towards the first support 2, and it abuts against the bar stock 13 from the side to prevent the bar stock 13 from shifting when the pusher plate 17 pushes the bar stock. After processing, the hydraulic rod 16 retracts, driving the pusher plate 17 to retreat. The top rod 24 on the pusher plate 17 will contact the inclined surface of the transmission frame 23. The top rod 24 and the transmission frame 23 drive the limiting plate 18 to overcome the elastic force of the spring 22 and move away from the bar stock 13, so that the bar stock 13 can be fed normally. This process realizes the linkage between feeding and clamping, ensuring that the bar stock 13 is firmly fixed during the process of being pushed to the thread rolling station, effectively preventing deviation. In addition, the movement of the limiting plate 18 is guided by the guide rod groove 19 and the guide rod 20 to prevent the movement of the limiting plate 18 from shifting.

[0022] Working principle: This thread rolling machine, designed to prevent workpiece deviation, utilizes an elastically configured limiting plate 18 and transmission mechanism. When the pusher plate 17 is driven to move by the hydraulic rod 16, the interaction between the push rod 24 and the inclined surface of the transmission frame 23 causes the limiting plate 18 to move closer to or further away from the first support 2, thereby dynamically adjusting the clamping force on the bar stock 13. When the pusher plate 17 pushes the bar stock, the limiting plate 18 moves towards the first support 2, pressing against the bar stock 13 and limiting its movement. The pusher plate 17 then pushes the bar stock 13 to the processing position. When the pusher plate 17 resets, the push rod 24 and the transmission frame 23 cause the limiting plate 18 to move away from the bar stock 13, preventing it from pressing against the bar stock 13 and allowing the bar stock 13 to be fed out normally. This elastic design avoids both feeding difficulties caused by excessively small gaps and positioning inaccuracies caused by excessively large gaps, ensuring that the bar stock 13 remains in a stable position during feeding and thread rolling, significantly reducing deviation. Controller 4 controls motor 5 to operate, causing motor 5 to drive transmission wheel 6 to rotate. Transmission wheel 6 drives moving thread rolling plate 7 to move up and down reciprocally via transmission rod 8. Through moving thread rolling plate 7 and fixed thread rolling plate 10, the bar stock 13 is threaded. A notch 14 is opened at the bottom of baffle 12 and a spring piece 15 is set. In the initial state, the distance from the bottom of spring piece 15 to support 9 is less than the outer diameter of bar stock 13, so that bar stock 13 is subjected to slight pressure from spring piece 15 when passing through, preventing it from rolling or sliding after being fed. At the same time, the distance from the bottom of baffle 12 to support 9 is... The spacing is greater than the outer diameter of the bar stock 13, ensuring that the bar stock 13 enters the processing area smoothly, further improving the reliability of feeding and processing accuracy. When the bar stock 13 is pushed by the pusher plate 17, the bar stock 13 pushes the spring piece 15 and moves to the processing position. At the same time, the pusher plate 17 blocks the bottom of the baffle 12 and the feeding rack 11 to prevent the bar stock 13 from continuing to feed. After the pusher plate 17 is reset, the spring piece 15 is also reset. After the pusher plate 17 leaves the bottom of the baffle 12 and the feeding rack 11, the bar stock 13 automatically falls to the bottom of the baffle 12 and the feeding rack 11 under gravity. The controller 4 controls the hydraulic rod 16 to extend, pushing the pusher plate 17 to move towards the second support 3. During the forward movement of the pusher plate 17, the push rod 24 on it is misaligned with the transmission frame 23. Through the spring 22, the limiting plate 18 is driven to move towards the first support 2, abutting the bar stock 13 from the side, preventing the bar stock 13 from deviating when the pusher plate 17 pushes the bar stock. After processing, the hydraulic rod 16 retracts, driving the pusher plate 17 to retreat. The push rod 24 on the pusher plate 17 will contact the inclined surface of the transmission frame 23. Through the push rod 24 and the transmission frame 23, the limiting plate 18 is driven to overcome the elastic force of the spring 22 and move away from the bar stock 13, so that the bar stock 13 can be fed normally. This process realizes the linkage between feeding and clamping, ensuring that the bar stock 13 is firmly fixed during the process of being pushed to the thread rolling station, effectively preventing deviation. In addition, the movement of the limiting plate 18 is guided by the guide rod groove 19 and the guide rod 20 to prevent the movement of the limiting plate 18 from deviating.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A thread rolling machine for preventing workpiece misalignment, comprising a base (1), characterized in that: A first bracket (2) is fixedly connected to the top of one side of the base (1), and a second bracket (3) is fixedly connected to the top of the side of the base (1) near the first bracket (2). A controller (4) is installed on the outside of the second bracket (3). A thread rolling mechanism is provided on the second bracket (3). A support (9) is fixedly connected to the first bracket (2) near the middle. A fixed thread rolling plate (10) is installed on the side of the first bracket (2) corresponding to the second bracket (3). A feeding rack (11) is fixedly connected to the top of the first bracket (2) near the support (9). A baffle (12) is fixedly connected to the top of the first bracket (2) near the fixed thread rolling plate (10). The feeding rack (11) holds bar stock (13), and the support (9) is equipped with a hydraulic rod (16). A pusher plate (17) is installed on the telescopic end of the hydraulic rod (16) near the second bracket (3). A limit plate (18) is provided on the side of the feeding rack (11) and the baffle (12) away from the first bracket (2). The limit plate (18) is elastically set with the first bracket (2). When the pusher plate (17) moves, it drives the limit plate (18) to move closer to or away from the first bracket (2) through the transmission mechanism.

2. The thread rolling machine for preventing workpiece misalignment according to claim 1, characterized in that: The thread rolling mechanism includes a motor (5), the second bracket (3) is mounted on the top side of the motor (5), the shaft end of the motor (5) is mounted on a transmission wheel (6), the second bracket (3) is vertically slidably connected to a movable thread rolling plate (7) on the side near the fixed thread rolling plate (10), the top of the movable thread rolling plate (7) is rotatably connected to a transmission rod (8), and the end of the transmission rod (8) away from the movable thread rolling plate (7) is rotatably connected to the side of the transmission wheel (6).

3. The thread rolling machine for preventing workpiece misalignment according to claim 1, characterized in that: The baffle (12) has a notch (14) at the bottom center, and a spring piece (15) is fixedly connected to the top of the inner side of the notch (14).

4. A thread rolling machine for preventing workpiece misalignment according to claim 3, characterized in that: The distance between the bottom end of the baffle (12) and the support (9) of the feeding rack (11) is greater than the outer diameter of the bar stock (13), and the distance between the bottom end of the spring piece (15) and the support (9) in the initial state is less than the outer diameter of the bar stock (13).

5. A thread rolling machine for preventing workpiece misalignment according to claim 1, characterized in that: The transmission mechanism includes a guide rod groove (19). The first bracket (2) has guide rod grooves (19) symmetrically opened on both sides of the limiting plate (18). A guide rod (20) passes through the guide rod groove (19). One end of the guide rod (20) is fixedly connected to the limiting plate (18). An end plate (21) is fixedly connected to the end of the guide rod (20) away from the limiting plate (18). A spring (22) is sleeved on the guide rod (20) between the end plate (21) and the first bracket (2). A transmission frame (23) is fixedly connected to the position of the limiting plate (18) corresponding to the push plate (17). A top rod (24) is fixedly connected to the side of the push plate (17) corresponding to the transmission frame (23).

6. A thread rolling machine for preventing workpiece misalignment according to claim 5, characterized in that: The transmission frame (23) has an inclined surface on the side near the second support (3), and the end of the transmission frame (23) is smoothly connected to the limiting plate (18) through the inclined surface.

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