A high-precision anti-sticking die punching machine

Abstract

This utility model discloses a high-precision anti-sticking die punch, relating to the field of punch press technology. It includes a punch press body, an externally fixed mounting base, an internally fixed cylinder, an output block fixedly connected to the cylinder, a die holder fixedly connected to the upper side of the punch press body, a die groove on the upper side of the die holder, a cavity inside the die groove, a slidingly connected top block to the outside of the cavity, a limit plate fixedly connected to the bottom of the top block, a fixed rod fixedly connected to the inside of the cavity, a rebound mechanism mounted on one side of the mounting block, a linkage mechanism mounted between the mounting block and the limit plate, and an auxiliary demolding mechanism mounted inside the cavity. This punch press achieves automatic ejection of the formed part through the energy storage and release of an elastic element, ensuring rapid demolding. An additional manual operation component allows for manual intervention to provide auxiliary ejection force when automatic ejection is obstructed, effectively preventing die sticking and improving operational certainty and convenience.

Description

Technical Field

[0001] This utility model relates to the field of punch press technology, specifically to a high-precision anti-sticking die punch press. Background Technology

[0002] In the field of mechanical stamping, high-precision stamping presses are key equipment for achieving efficient forming of thin metal sheets. As the manufacturing industry continues to demand higher product quality and production efficiency, the stability of the stamping process and the reliability of demolding are receiving increasing attention. To reduce adhesion between the workpiece and the die and ensure the integrity of the stamped parts and production cycle time, the industry is constantly seeking more advanced and reliable anti-sticking solutions.

[0003] Currently, there is a type of stamping device with an ejector structure, which uses an elastic element in the die holder to assist in demolding. One known technical solution uses the downward pressure of the moving die during the stamping process to compress the spring, and after the stamping is completed, the spring's restoring force pushes the ejector block, thereby ejecting the formed workpiece from the die groove and realizing a basic automatic demolding function.

[0004] However, the aforementioned existing technologies have limitations in practical applications. Their demolding power relies entirely on the automatic rebound of the spring. When the processing material has a strong adsorption force or the stamping force is too large, the spring's ejection force may be insufficient, causing the workpiece to remain in the mold groove and form a sticky mold. At this time, the equipment lacks effective means of manual intervention, and the operator has difficulty in quickly and effortlessly assisting in ejecting the workpiece. This not only affects the continuous production rhythm, but may also damage the mold or workpiece due to improper prying operations. This inadequate response to automatic demolding failure restricts the stability of stamping processing and the equipment's ability to cope with complex working conditions.

[0005] Based on this, the present invention designs a high-precision anti-sticking die punch to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, this utility model provides a high-precision anti-sticking die punch.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A high-precision anti-sticking die punch includes a punch body, a rebound mechanism, a linkage mechanism, and an auxiliary demolding mechanism. A mounting base is fixedly connected to the outside of the punch body. A cylinder is fixedly connected to the inside of the mounting base, and a pressure block is fixedly connected to the output end of the cylinder. A die holder is fixedly connected to the upper side of the punch body. A die groove is formed on the upper side of the die holder, and a cavity is formed on the inner side of the die groove. A top block is slidably connected to the outside of the cavity. A limit plate is fixedly connected to the bottom of the top block, and the limit plate abuts against the upper end face of the cavity. Two sets of symmetrically arranged fixing rods are fixedly connected inside the cavity. Mounting blocks are slidably connected to the outside of the fixing rods. The rebound mechanism is installed on one side of the mounting block. The linkage mechanism is installed between the mounting block and the limit plate. The auxiliary demolding mechanism is installed inside the cavity.

[0009] Furthermore, a control lever is rotatably connected to the outside of the punch press body.

[0010] Furthermore, the outer side of the fixing rod is provided with a sliding groove, and the inner side of the mounting block is fixedly connected to a slider, which is slidably connected to the inner side of the sliding groove.

[0011] Furthermore, the rebound mechanism includes a damper and a compression spring, one end of which is fixedly connected to one side of the mounting block, and the other end of which is fixedly connected to the interior of the cavity.

[0012] Furthermore, the linkage mechanism includes connecting plates and support rods. There are multiple sets of connecting plates, which are respectively fixedly connected to the upper side of the mounting block and the bottom of the limiting plate, and the support rods are rotatably connected between the two sets of connecting plates.

[0013] Furthermore, the auxiliary demolding mechanism includes a rotating rod and a pull rope, the rotating rod being rotatably connected to the inside of the cavity, and the pull rope being wound around the outside of the rotating rod.

[0014] Furthermore, the end of the pull rope passes through the outside of the fixed rod and is fixedly connected to one side of the slider.

[0015] Furthermore, the end of the rotating rod protrudes outside the punch press body and is fixedly connected to a screw block.

[0016] Compared with the prior art, the advantages of this utility model are as follows: 1. This high-precision anti-sticking die punch, through the combination of the automatic rebound of the elastic element and the lever transmission, can actively and smoothly eject the formed part from the die after the stamping is completed. This process does not require additional power intervention, effectively avoiding the adhesion between the workpiece and the die, ensuring the continuity and stability of the production process, thereby improving processing efficiency and product yield.

[0017] 2. This high-precision anti-sticking die punch provides a direct manual intervention method to address the complex situation where automatic ejection may fail. The internal transmission can be driven by a simple rotation operation to force the workpiece out. This dual protection mechanism greatly enhances the reliability of the equipment in dealing with different working conditions, eliminates production stoppages caused by die sticking, and makes maintenance convenient and labor-saving. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a perspective view of a high-precision anti-sticking die punching machine according to the present invention;

[0020] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 This is a partial structural front sectional view of the present invention;

[0022] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0023] Figure 5 for Figure 3 Enlarged view of point C in the middle;

[0024] Figure 6 for Figure 3 Enlarged view of point D in the middle.

[0025] The labels in the diagram represent:

[0026] 1. Punch press body; 2. Mounting base; 3. Cylinder; 4. Pressure block; 5. Control rod; 6. Die base; 7. Die groove; 8. Cavity; 9. Top block; 10. Limiting plate; 11. Fixing rod; 12. Mounting block; 13. Slide groove; 14. Slider; 15. Damper; 16. Compression spring; 17. Connecting plate; 18. Support rod; 19. Rotating rod; 20. Pull rope; 21. Tightening block. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] Example 1: In some embodiments, please refer to the accompanying drawings. Figures 1-6 A high-precision anti-sticking die punch press includes a punch press body 1, which serves as the support and load-bearing frame of the entire equipment. Made of high-strength cast iron through aging treatment, its excellent structural stability and resistance to deformation provide a solid foundation for the precise positioning and long-term maintenance of the die, ensuring the repeatability of the stamping stroke. An external mounting base 2 is fixedly connected to the punch press body 1. The mounting base 2 mainly supports and fixes the power source. Its precision-machined mounting surface ensures the high alignment of the cylinder and the stamping axis, effectively avoiding the influence of lateral forces on motion accuracy. An internal cylinder 3 is fixedly connected to the mounting base 2. The cylinder 3, as the core power actuator, is a high-precision servo cylinder, combined with a precision linear actuator. The guide rail enables precise closed-loop control of the downward position and pressure of the pressure block, which is the core guarantee for achieving high-precision stamping. The output end of the cylinder 3 is fixedly connected to the pressure block 4. The working surface of the pressure block 4 is precision ground and uses hard alloy inserts, which have extremely high hardness, wear resistance and dimensional stability. It can maintain a precise and uniform micro gap with the die groove for a long time, which directly determines the dimensional accuracy and contour clarity of the stamped products. The external rotating connection of the press body 1 is a control rod 5. The control rod 5 integrates a high-resolution encoder, providing users with a direct operation interface for accurately setting and controlling stamping parameters. By rotating, it can finely adjust key process parameters such as stamping depth, and realize precise management of the stamping process.

[0029] A die holder 6 is fixedly connected to the upper side of the punch press body 1. The die holder 6 is a key component in the forming process, and its upper part constitutes the main forming area of ​​the workpiece. A die groove 7 is opened on the upper side of the die holder 6. The die groove 7 is a mating component of the pressure block 4. Its precise cavity determines the final shape and size of the stamped workpiece. A cavity 8 is opened on the inner side of the die groove 7. The cavity 8 provides the necessary installation and movement space for the internal ejection and reset components. A top block 9 is slidably connected to the outside of the cavity 8. The top block 9 is a functional component that directly contacts the formed workpiece during the demolding process and ejects it from the die groove 7. A limit plate 10 is fixedly connected to the bottom of the top block 9, and the limit plate 10 abuts against the upper end face of the cavity 8. The main function of the limit plate 10 is to limit the travel range of the top block 9 in the cavity 8, preventing it from moving excessively or falling out of the cavity 8. The interior of the cavity 8 The fixed connection has two sets of symmetrically arranged fixed rods 11. The fixed rods 11 provide a precise guide trajectory for the sliding components inside the cavity 8, ensuring smooth movement without deflection. The fixed rods 11 are slidably connected to the outside of the mounting blocks 12. The mounting blocks 12 serve as the common mounting base for the rebound mechanism and the linkage mechanism. Their sliding is the key to energy storage and release. The fixed rods 11 have a sliding groove 13 on their outside. The sliding groove 13 and the slider 14 form a sliding pair, which further restricts the motion freedom of the mounting blocks 12, allowing them to only translate along the axial direction of the fixed rods 11. The inner side of the mounting blocks 12 is fixedly connected to the slider 14, and the slider 14 is slidably connected to the inner side of the sliding groove 13. The slider 14 is the connection medium between the mounting blocks 12 and the sliding groove 13. Its cooperation with the sliding groove 13 ensures the smooth and precise sliding of the mounting blocks 12.

[0030] The rebound mechanism is installed on one side of the mounting block 12. The rebound mechanism is used to store energy during the stamping stroke and release it during the return stroke to provide demolding power. The rebound mechanism includes a damper 15 and a compression spring 16. One end of the damper 15 and the compression spring 16 is fixedly connected to one side of the mounting block 12, and the other end of the damper 15 and the compression spring 16 is fixedly connected to the inside of the cavity 8. The damper 15 is used to absorb and dissipate impact energy to prevent violent vibration during the ejection process, while the compression spring 16 is the core component for storing and providing elastic restoring force. The two work together to achieve smooth and efficient automatic demolding.

[0031] The linkage mechanism is installed between the mounting block 12 and the limiting plate 10. The linkage mechanism cleverly connects the vertical movement of the top block 9 with the horizontal movement of the mounting block 12, realizing the conversion and transmission of power direction. The linkage mechanism includes a connecting plate 17 and a support rod 18. There are multiple sets of connecting plates 17, which are respectively fixedly connected to the upper side of the mounting block 12 and the bottom of the limiting plate 10. The support rod 18 is rotatably connected between the two sets of connecting plates 17. The connecting plate 17 serves as the fixed fulcrum of the support rod 18, and the support rod 18 acts as a transmission lever. When the mounting block 12 moves horizontally, the horizontal force can be converted into a vertical pushing force through the rotation of the support rod 18, and vice versa.

[0032] An auxiliary demolding mechanism is installed inside the cavity 8. This mechanism provides a backup solution for forced demolding when the automatic demolding force is insufficient, enhancing the reliability of the equipment. The auxiliary demolding mechanism includes a rotating rod 19 and a pull rope 20. The rotating rod 19 is rotatably connected to the inside of the cavity 8, and the pull rope 20 is wound around the outside of the rotating rod 19. The rotating rod 19 serves as a manually input rotary actuator, and its rotation can retract the pull rope 20. The pull rope 20 acts as a flexible transmission component, converting rotary motion into linear traction force. The end of the pull rope 20 passes through the outside of the fixed rod 11 and is fixedly connected to one side of the slider 14. The connection between the end of the pull rope 20 and the slider 14 allows the traction force of the pull rope 20 to directly act on the mounting block 12, thereby driving the entire demolding sequence. The end of the rotating rod 19 protrudes from the outside of the punch press body 1 and is fixedly connected to a screw block 21. The screw block 21 increases the lever arm, allowing the operator to rotate the rotating rod 19 with less effort, providing convenience for human-machine interaction.

[0033] In this embodiment, when the high-precision anti-sticking die punching machine performs sheet metal stamping, the sheet metal to be processed is first placed on the die base 6. After the equipment is started, the cylinder 3 operates and drives the pressure block 4 to press down, pressing the sheet metal into the die groove 7 to complete the forming stamping. During this process, the formed sheet metal will drive the top block 9 to move down together, and the limiting plate 10 fixed to the bottom of the top block 9 will move accordingly. The limiting plate 10 transmits downward pressure through the connecting plate 17 and the support rod 18 rotatably connected between the two. Under the interaction of forces, the other end of the support rod 18 will push the mounting block 12, causing it to slide outward along the fixed rod 11, that is, in the compression direction of the compression spring 16, thereby compressing the damper 15 and the compression spring 16.

[0034] After the stamping process is completed, the cylinder 3 reverses and drives the pressure block 4 to rise and disengage from the mold groove 7. At this time, the elastic potential energy stored in the pre-compressed damper 15 and the compression spring 16 is released, providing a strong rebound force. This force is transmitted in the opposite direction through the support rod 18 and finally acts on the top block 9, causing it to move upward and stably eject the formed iron sheet from the mold groove 7, thus achieving efficient and automated anti-sticking and rapid demolding effects.

[0035] To further ensure reliability, in special cases where the spring 16's rebound force is insufficient due to excessive punching force, the equipment is also designed with a manual assisted demolding mechanism. The operator can manually turn the screw block 21 protruding from the outside of the punch press body 1, which drives the rotating rod 19 fixed thereto to rotate. The rotating rod 19 winds the pull rope 20, and the end of the pull rope 20 pulls the slider 14 fixed on the mounting block 12 to slide in the groove 13 of the fixed rod 11, thereby actively moving the two sets of mounting blocks 12 toward each other. This action forces the top block 9 to be lifted by the support rod 18, completing the manual demolding. This dual guarantee mechanism significantly enhances the equipment's ability to cope with complex working conditions, making its anti-sticking properties more comprehensive and reliable.

[0036] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A high-precision anti-sticking die punch, comprising a punch body (1), characterized in that: It also includes a rebound mechanism, a linkage mechanism, and an auxiliary demolding mechanism. A mounting base (2) is fixedly connected to the outside of the punch press body (1). A cylinder (3) is fixedly connected to the inside of the mounting base (2). A pressure block (4) is fixedly connected to the output end of the cylinder (3). A die holder (6) is fixedly connected to the upper side of the punch press body (1). A die groove (7) is opened on the upper side of the die holder (6). A cavity (8) is opened on the inner side of the die groove (7). A top block (9) is slidably connected to the outside of the cavity (8). The bottom of the top block (9) is fixedly connected to a limiting plate (10), and the limiting plate (10) abuts against the upper end face of the cavity (8). Two sets of fixed rods (11) arranged symmetrically are fixedly connected inside the cavity (8). An installation block (12) is slidably connected to the outside of the fixed rods (11). The rebound mechanism is installed on one side of the installation block (12). The linkage mechanism is installed between the installation block (12) and the limiting plate (10). The auxiliary demolding mechanism is installed inside the cavity (8).

2. The high-precision anti-sticking die punching machine according to claim 1, characterized in that, The punch press body (1) is externally rotatably connected to a control rod (5).

3. The high-precision anti-sticking die punching machine according to claim 1, characterized in that, The fixed rod (11) has a groove (13) on its outside, and a slider (14) is fixedly connected to the inside of the mounting block (12), and the slider (14) is slidably connected to the inside of the groove (13).

4. The high-precision anti-sticking die punching machine according to claim 1, characterized in that, The rebound mechanism includes a damper (15) and a compression spring (16). One end of the damper (15) and the compression spring (16) is fixedly connected to one side of the mounting block (12), and the other end of the damper (15) and the compression spring (16) is fixedly connected to the inside of the cavity (8).

5. The high-precision anti-sticking die punching machine according to claim 1, characterized in that, The linkage mechanism includes a connecting plate (17) and a support rod (18). There are multiple sets of connecting plates (17) which are respectively fixedly connected to the upper side of the mounting block (12) and the bottom of the limiting plate (10), and the support rod (18) is rotatably connected between two sets of connecting plates (17).

6. The high-precision anti-sticking die punching machine according to claim 3, characterized in that, The auxiliary demolding mechanism includes a rotating rod (19) and a pull rope (20). The rotating rod (19) is rotatably connected to the inside of the cavity (8), and the pull rope (20) is wound around the outside of the rotating rod (19).

7. The high-precision anti-sticking die punching machine according to claim 6, characterized in that, The end of the pull rope (20) passes through the outside of the fixed rod (11) and is fixedly connected to one side of the slider (14).

8. The high-precision anti-sticking die punching machine according to claim 7, characterized in that, The end of the rotating rod (19) protrudes outside the punch body (1) and is fixedly connected to a screw block (21).

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