A mechanism for correcting the deviation of a pneumatic punch

Abstract

The utility model relates to punch press equipment technical field, concretely for a kind of deviation rectifying mechanism for pneumatic punch press, it include: including punch press body, liftable punch and processing table, processing table both sides are fixedly connected with deviation rectifying table, deviation rectifying table other side is equipped with two groups of relatively movable U-shaped deviation rectifying frame, deviation rectifying frame is fixed with fixed shaft, deviation rectifying roller is set on fixed shaft, deviation rectifying frame top is screw thread connection adjusting rod, adjusting rod bottom end installs rubber block, bottom connection adjusting assembly, for adjusting the distance between two deviation rectifying frames. By setting the deviation rectifying frame and deviation rectifying roller that can be symmetrically adjusted, even rolling limit can be provided from the both sides of plate, avoid the deviation problem caused by uneven unilateral thrust;Meanwhile, the rubber block that can be pressed down is used to compress the surface of plate, prevent it from warping in the stamping process, combined with the buffer pressing plate that is pre-compressed before stamping, further ensure the stability of plate, thereby effectively improve the precision of stamping processing and product quality.

Description

Technical Field

[0001] This utility model relates to the field of punch press equipment technology, specifically a correction mechanism for a pneumatic punch press. Background Technology

[0002] Stamping is an important forming process in modern manufacturing, and pneumatic punch presses are a common type of equipment. Their core working principle is to use compressed air as a power source to drive pneumatic actuators to control the lifting and lowering of the punch, thereby applying pressure to the sheet metal placed on the processing table, causing it to undergo plastic deformation in the mold, ultimately obtaining the desired shape and size. A complete pneumatic punch press system typically includes the main components such as a punch that provides power, a system for controlling the precise movement of the punch, and a processing table for fixing the mold.

[0003] In existing technologies, ensuring the accurate delivery of sheet metal to the designated position on the die during stamping production is crucial for guaranteeing product quality. To this end, various feeding and correction technologies have emerged. A search revealed a solution in Chinese utility model patent CN220295711U. This solution discloses a stamping die feeding and correction device that uses an infrared rangefinder to non-contactly measure the edge position of the sheet metal and sends the distance information to a control console for calculation and analysis. The control console then instructs a servo motor to actuate, which, via a lead screw and nut mechanism, converts the displacement into linear displacement of a slider. This ultimately pushes a push rod and push block assembly connected to the slider to laterally adjust the sheet metal, returning it to the preset correct feeding path. This method constructs a closed-loop control system capable of dynamically correcting deviations based on the actual offset of the sheet metal.

[0004] However, the above solution has the following drawbacks: The push block contains multiple springs and guide posts. The springs on the push block contact the workpiece and push it to the correct position. Because the springs on the multiple push blocks on both sides frequently contact the workpiece, their positions may differ each time, resulting in varying pushing forces for each push block and spring. This leads to different levels of wear and tear on the springs. Over long-term use, the restoring force of the springs on both sides decreases unevenly due to the difference in wear. This asymmetry in spring force can cause the workpiece to shift towards the side with less force during the correction process, thus affecting the correction accuracy. Utility Model Content

[0005] The purpose of this invention is to provide a correction mechanism for a pneumatic punch press to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a correction mechanism for a pneumatic punch press, comprising: a punch press body and a liftable punch mounted on the punch press body, and a processing table fixedly connected to one side of the bottom of the punch press body. The processing table is fixedly connected to one side of the correction table on both the front and rear sides. A set of relatively movable correction frames is installed on the other side of the correction table. The correction frames are U-shaped, and a fixed shaft is fixedly installed inside the correction frames. A correction roller is rotatably sleeved on the fixed shaft. An adjusting rod is threaded onto one side of the top of the correction frame. A rubber block is fixedly connected to the bottom end of the adjusting rod. An adjusting component is connected to one side of the bottom of the correction frame. The adjusting component is used to adjust the distance between the two correction frames.

[0007] Preferably, four spring buffers are fixedly connected to the bottom of the punch. The four spring buffers are arranged in a circle, and the bottom of each of the four spring buffers is fixedly connected to the pressure plate. A guide plate is fixedly connected to the side of the correction table away from the processing table.

[0008] Preferably, the adjustment component includes a support platform, with worm gears rotatably mounted on both the front and rear sides of the support platform. The worm gears are rotatably mounted on the middle of the connecting shaft, the top of the connecting shaft is rotatably mounted inside the correction platform, and the bottom of the connecting shaft is rotatably mounted on the support platform.

[0009] Preferably, a worm shaft is engaged on one side of the worm wheel, and the worm shaft is rotatably sleeved in a support seat fixedly connected to the support platform. A handwheel is fixedly connected to one end of the worm shaft.

[0010] Preferably, a drive plate is provided on the upper side of the worm gear, the middle part of the drive plate is fixedly sleeved on the connecting shaft, both ends of the drive plate are rotatably connected to one end of the driven plate through pins, and the other end of the driven plate is fixedly connected to the connecting plate through pins.

[0011] Preferably, the connecting plate is fixedly connected to the bottom of the connecting block, the top of the connecting block is fixedly connected to the straightening frame, and one side of the middle part of the connecting block is slidably engaged with the guide plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting a symmetrically adjustable correction frame and correction roller, uniform rolling limit can be provided from both sides of the plate, avoiding the deviation problem caused by uneven thrust on one side. At the same time, the pressable rubber block is used to press the surface of the plate to prevent it from warping during the stamping process. Combined with the buffer plate that is pre-pressed before stamping, the stability of the plate is further guaranteed, thereby effectively improving the accuracy of stamping and product quality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a bottom view of the overall structure of this utility model; Figure 3 This is a schematic diagram of the internal structure of this utility model; Figure 4 This is a side view of the internal structure of this utility model.

[0014] In the diagram: 1. Punch press body; 2. Punch; 3. Machining table; 4. Straightening table; 5. Straightening frame; 6. Fixed shaft; 7. Straightening roller; 8. Adjusting rod; 9. Rubber block; 10. Spring buffer; 11. Pressure plate; 12. Guide plate; 13. Support table; 14. Worm gear; 15. Connecting shaft; 16. Worm shaft; 17. Handwheel; 18. Drive plate; 19. Driven plate; 20. Connecting plate; 21. Connecting block. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0016] Example 1: Please refer to Figures 1-4 This utility model provides a technical solution: a correction mechanism for a pneumatic punch press, comprising: a punch press body 1 and a liftable punch 2 mounted on the punch press body 1, and a processing table 3 fixedly connected to one side of the bottom of the punch press body 1. The processing table 3 is used to place the processing sheet. The front and rear sides of the processing table 3 are fixedly connected to one side of a correction table 4. A set of relatively movable correction frames 5 are installed on the other side of the correction table 4. The correction frames 5 are U-shaped. A fixed shaft 6 is fixedly installed inside the correction frame 5. A correction roller 7 is rotatably sleeved on the fixed shaft 6. The fixed shaft 6 limits the correction roller 7, thereby allowing it to rotate. An adjusting rod 8 is threadedly sleeved on one side of the top of the correction frame 5. A rubber block 9 is fixedly connected to the bottom end of the adjusting rod 8. An adjusting component is connected to one side of the bottom of the correction frame 5. The adjusting component is used to adjust the distance between the two correction frames 5.

[0017] In use, first place the sheet material to be processed between the two alignment frames 5 onto the processing table 3. Then, by adjusting the adjustment components, the two alignment frames 5 move towards each other on one side of the alignment table 4 until the alignment rollers 7, which are limited by the fixed shaft 6 inside the alignment frames 5, roll into contact with the sheet material. At this time, the front and rear ends of the sheet material are initially limited and corrected. In this way, it can be ensured that the sheet material moves along the set direction of the multiple alignment rollers 7 without deviation, and the alignment rollers 7 will not deviate due to long-term use, thus improving accuracy. Then, by twisting the adjustment rod 8, since the adjustment rod 8 is threadedly connected to the alignment frame 5, the adjustment rod 8 can drive the rubber block 9 to move downward until the rubber block 9 is tightly abutted against the upper surface of the sheet material, thereby pressing the sheet material back and forth so that the sheet material will not warp. Then, by controlling the punch 2 to move downward until the punch 2 contacts the sheet material and punches it.

[0018] Example 2: Based on Example 1, four spring buffers 10 are fixedly connected to the bottom of the punch 2. The four spring buffers 10 are arranged in a circle, and the bottom of each of the four spring buffers 10 is fixedly connected to the pressure plate 11. A guide plate 12 is fixedly connected to the side of the correction table 4 away from the processing table 3. Before the punch 2 contacts the sheet metal, the pressure plate 11 at its bottom will first contact the sheet metal. Then, the pressure plate 11 limits the spring buffers 10, causing the spring buffers 10 to have a downward pressing tendency, thereby making the pressure plate 11 further press the sheet metal to ensure that the sheet metal will not shift during the stamping process.

[0019] Example 3: Based on Example 2, the adjustment assembly includes a support platform 13, which is fixedly mounted on the punch press body 1. Worm gears 14 are rotatably mounted on both the front and rear sides of the support platform 13. The worm gears 14 are rotatably sleeved on the middle of the connecting shaft 15. The top end of the connecting shaft 15 is rotatably sleeved inside the straightening table 4, and the bottom end of the connecting shaft 15 is rotatably sleeved on the support platform 13. The connecting shaft 15 is limited by the support platform 13 and the straightening table 4, thereby ensuring rotational stability. A worm shaft 16 meshes with one side of the worm gear 14. Worms are provided on both the front and rear sides of the worm shaft 16. The worm shaft 16 is rotatably sleeved on the support platform 13 and fixedly connected to a support seat. Inside, the support seat limits the worm shaft 16. A handwheel 17 is fixedly connected to one end of the worm shaft 16. A drive plate 18 is provided on the upper side of the worm wheel 14. The middle part of the drive plate 18 is fixedly sleeved on the connecting shaft 15. Both ends of the drive plate 18 are rotatably connected to one end of the driven plate 19 through pins. The other end of the driven plate 19 is fixedly connected to the connecting plate 20 through pins. The connecting plate 20 is fixedly connected to the bottom of the connecting block 21, so that the connecting block 21 can move synchronously. The top of the connecting block 21 is fixedly connected to the correction frame 5. One side of the middle part of the connecting block 21 is slidably engaged with the guide plate 12. The guide plate 12 guides and limits the correction frame 5.

[0020] By turning the handwheel 17, the worm shaft 16 is driven to rotate. The worm shaft 16 meshes with the worm wheel 14 through the worm fixedly connected to it, causing the worm wheel 14 to drive the connecting shaft 15 to rotate. Since the drive plate 18 is fixedly connected to the connecting shaft 15, the drive plate 18 can be driven to rotate. The drive plate 18 drives the driven plate 19 to move through the rotational connection of the pin shaft. The driven plate 19 also pulls the connecting plate 20 to move through the connection of the pin shaft. The connecting plate 20 is fixedly connected to the connecting block 21, which will pull the connecting block 21 to move. The connecting block 21 moves under the guidance and limit of the guide plate 12, which in turn drives the two straightening frames 5 to move back to back or towards each other, thereby adjusting the straightening rollers 7 set in the straightening frame 5. Multiple straightening rollers 7 can ensure that the sheet metal moves in the specified direction without positional deviation, ensuring the straightening effect and improving the stamping accuracy.

[0021] 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 correction mechanism for a pneumatic punch press, comprising a punch press body (1) and a liftable punch (2) mounted on the punch press body (1), and a processing table (3) fixedly connected to one side of the bottom of the punch press body (1), characterized in that: The processing table (3) is fixedly connected to one side of the correction table (4) on both the front and rear sides. A set of relatively movable correction frames (5) is installed on the other side of the correction table (4). The correction frame (5) is U-shaped. A fixed shaft (6) is fixedly installed inside the correction frame (5). A correction roller (7) is rotatably sleeved on the fixed shaft (6). An adjusting rod (8) is threadedly connected to one side of the top of the correction frame (5). A rubber block (9) is fixedly connected to the bottom end of the adjusting rod (8). An adjusting component is connected to one side of the bottom of the correction frame (5). The adjusting component is used to adjust the distance between the two correction frames (5).

2. The correction mechanism for a pneumatic punch press according to claim 1, characterized in that: The punch (2) is fixedly connected to four spring buffers (10) at the bottom. The four spring buffers (10) are arranged in a circle. The bottom of each of the four spring buffers (10) is fixedly connected to the pressure plate (11). The guide plate (12) is fixedly connected to the side of the correction table (4) away from the processing table (3).

3. The correction mechanism for a pneumatic punch press according to claim 1, characterized in that: The adjustment assembly includes a support platform (13), with worm gears (14) rotatably mounted on both the front and rear sides of the support platform (13). The worm gears (14) are rotatably mounted on the middle of the connecting shaft (15), the top of the connecting shaft (15) is rotatably mounted inside the correction platform (4), and the bottom of the connecting shaft (15) is rotatably mounted on the support platform (13).

4. The correction mechanism for a pneumatic punch press according to claim 3, characterized in that: The worm wheel (14) is meshed with a worm shaft (16) on one side. The worm shaft (16) is rotatably sleeved in a support seat fixedly connected to the support platform (13). A handwheel (17) is fixedly connected to one end of the worm shaft (16).

5. A correction mechanism for a pneumatic punch press according to claim 4, characterized in that: A drive plate (18) is provided on the upper side of the worm gear (14). The middle part of the drive plate (18) is fixedly sleeved on the connecting shaft (15). Both ends of the drive plate (18) are rotatably connected to one end of the driven plate (19) through pins. The other end of the driven plate (19) is fixedly connected to the connecting plate (20) through pins.

6. A correction mechanism for a pneumatic punch press according to claim 5, characterized in that: The connecting plate (20) is fixedly connected to the bottom of the connecting block (21), the top of the connecting block (21) is fixedly connected to the correction frame (5), and the middle side of the connecting block (21) is slidably engaged on the guide plate (12).

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