A blanking device for sheet metal processing

Abstract

The utility model relates to sheet metal part machining technical field, specifically disclose a blanking device for sheet metal machining, including bottom plate, the upside of bottom plate is provided with the top plate, the four corners between bottom plate and top plate all are fixedly connected with slide rod, be provided with blanking mechanism between bottom plate and top plate, the blanking mechanism includes the middle plate fixedly connected in four slide rod outer walls, the outer wall of middle plate is opened with the rectangular hole, the inner wall of rectangular hole is provided with fixed mechanism, the outer wall slidingly connected with two movable plates of four slide rods, the lower end surface of upside movable plate is provided with upper die, the upper end surface of downside movable plate is provided with lower die matched with upper die, through the automatic clamping device of two -way linkage blanking mechanism and servo motor control of single electric push rod drive, the high -precision, high -efficient blanking processing of sheet metal part has been realized, effectively prevent workpiece displacement and surface damage, significantly improved product quality and production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of sheet metal processing technology, and specifically discloses a punching device for sheet metal processing. Background Technology

[0002] Sheet metal parts are products manufactured through stamping processes. They are characterized by light weight, high strength, low cost, and good mass production performance, and are widely used in electronics, communications, automotive, and medical device industries. However, existing sheet metal stamping dies generally use mechanical power to provide springback. This method of return can easily damage the surface of the stamped parts, affecting product quality. Furthermore, existing sheet metal stamping dies have relatively simple structures, low processing efficiency, and low precision. This is because traditional sheet metal stamping dies lack a device to limit offset between the upper and lower base plates, leading to errors when the dies are in place.

[0003] Chinese patent CN209577855U discloses a bidirectional punching device for sheet metal processing, including a frame, an upper die base connected above the frame, and a lower die base connected below the frame. The upper die base is equipped with a first cylinder, the movable end of which passes through the upper die base and connects to a punching punch. The lower die base is equipped with a second cylinder, the movable end of which passes through the lower die base and connects to a punching die. The frame has a through hole. When the first cylinder drives the punching punch to punch through the sheet metal part and insert into the through hole, and the second cylinder drives the punching die to punch through the sheet metal part and insert into the through hole, the punching punch and punching die come into contact. This invention, with its corresponding upper and lower die bases, performs bidirectional punching on the sheet metal part through the punching punch and punching die, resulting in more uniform stamping force on the sheet metal part, improving the accuracy of the punching process, and achieving high-quality production of sheet metal parts.

[0004] Although the bidirectional punching device for sheet metal processing disclosed in the aforementioned document can make the sheet metal parts more evenly subjected to punching by bidirectional means, it is costly because it drives the upper and lower die bases separately with two cylinders, and it is difficult to achieve precise synchronization. In addition, the sheet metal is not fixed, which makes it easy for the sheet metal to shift during punching, resulting in a low yield rate. Therefore, a punching device for sheet metal processing is needed to solve this problem. Utility Model Content

[0005] This utility model proposes a blanking device for sheet metal processing. Through a bidirectional linkage blanking mechanism driven by a single electric push rod and an automatic clamping device controlled by a servo motor, it realizes high-precision and high-efficiency blanking processing of sheet metal parts, effectively prevents workpiece displacement and surface damage, and significantly improves product quality and production efficiency.

[0006] This utility model is implemented as follows: a blanking device for sheet metal processing includes a base plate, a top plate on the upper side of the base plate, and slide rods fixedly connected at the four corners between the base plate and the top plate. A blanking mechanism is provided between the base plate and the top plate. The blanking mechanism includes a middle plate fixedly connected to the outer walls of the four slide rods. A rectangular hole is opened through the outer wall of the middle plate, and a fixing mechanism is provided on the inner wall of the rectangular hole. Two symmetrically distributed movable plates are slidably connected to the outer walls of the four slide rods. An upper die is provided on the lower end face of the upper movable plate, and a lower die matching the upper die is provided on the upper end face of the lower movable plate. An electric push rod with its output end fixedly connected to the upper movable plate is installed on the upper end face of the top plate. A first connecting rod is rotatably connected to both ends of the middle plate, and a second connecting rod is rotatably connected to both ends of the first connecting rod. The other ends of the two second connecting rods are respectively rotatably connected to the two movable plates.

[0007] As a preferred embodiment of the blanking device for sheet metal processing according to this utility model, the fixing mechanism includes a threaded rod rotatably connected to the inner wall of a rectangular hole, a servo motor with its output end fixedly connected to the threaded rod is installed on the outer wall of the intermediate plate, clamping plates are threadedly connected to both ends of the outer wall of the threaded rod, a limit rod is fixedly connected to the inner wall of the rectangular hole, and both clamping plates are slidably connected to the limit rod.

[0008] As a preferred embodiment of the blanking device for sheet metal processing according to this utility model, the clamping plate is L-shaped.

[0009] As a preferred embodiment of the blanking device for sheet metal processing according to this utility model, the inner wall of the clamping plate is provided with a rubber pad.

[0010] In a preferred embodiment of the blanking device for sheet metal processing according to this utility model, the threads at both ends of the outer wall of the threaded rod are in opposite directions.

[0011] As a preferred embodiment of the blanking device for sheet metal processing according to this utility model, a controller is provided on the outer wall of the intermediate plate, and the electric push rod and the servo motor are both electrically connected to the controller.

[0012] The beneficial effects of this utility model are:

[0013] 1. This utility model adopts a single electric push rod driven linkage mechanism to synchronously control the bidirectional movement of the upper and lower die, so that the sheet metal parts are subjected to uniform force, improve the blanking accuracy, and avoid the damage to the workpiece surface caused by traditional mechanical springback, effectively improving the processing quality and yield.

[0014] 2. The servo motor drives the bidirectional threaded rod to automatically clamp the sheet metal parts with the L-shaped clamping plate. The limit rod ensures stable positioning and prevents sheet metal displacement during punching, further improving processing accuracy and product consistency. At the same time, the rubber pad design avoids clamping damage and is suitable for high-precision sheet metal processing needs. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0016] Figure 1 This is an overall structural diagram of a blanking device for sheet metal processing according to the present invention.

[0017] Figure 2 This is a top view of the middle plate of this utility model.

[0018] Figure 3 This is a structural diagram of the clamping plate of this utility model.

[0019] The markings in the diagram are: 1. Base plate; 2. Top plate; 3. Electric actuator; 4. Slide rod; 5. Middle plate; 6. Movable plate; 7. Upper die; 8. Lower die; 9. First connecting rod; 10. Second connecting rod; 11. Rectangular hole; 12. Threaded rod; 13. Limiting rod; 14. Servo motor; 15. Clamping plate. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0021] Please see Figure 1-3A blanking device for sheet metal processing includes a base plate 1, a top plate 2 on the upper side of the base plate 1, slide rods 4 fixedly connected at the four corners between the base plate 1 and the top plate 2, a blanking mechanism between the base plate 1 and the top plate 2, the blanking mechanism including a middle plate 5 fixedly connected to the outer wall of the four slide rods 4, a rectangular hole 11 through the outer wall of the middle plate 5, a fixing mechanism on the inner wall of the rectangular hole 11, two symmetrically distributed movable plates 6 slidably connected to the outer wall of the four slide rods 4, an upper die 7 on the lower end face of the upper movable plate 6, a lower die 8 matching the upper die 7 on the upper end face of the lower movable plate 6, an electric push rod 3 with its output end fixedly connected to the upper movable plate 6 installed on the upper end face of the top plate 2, a first connecting rod 9 rotatably connected to both the left and right ends of the middle plate 5, a second connecting rod 10 rotatably connected to both ends of the first connecting rod 9, and the other ends of the two second connecting rods 10 rotatably connected to the two movable plates 6 respectively.

[0022] In this embodiment: when the electric actuator 3 drives the upper movable plate 6 to press down the upper die 7, the linkage mechanism of the first connecting rod 9 and the second connecting rod 10 simultaneously drives the lower movable plate 6 and the lower die 8 to rise, realizing bidirectional punching motion. The fixing mechanism firmly fixes the sheet metal part in the rectangular hole 11, and the four corner slide rods 4 ensure the vertical accuracy of the punching process. This utility model adopts a single electric actuator 3 to drive a bidirectional linkage mechanism, which reduces equipment costs and ensures the synchronous accuracy of the upper and lower dies. The fixing mechanism effectively prevents the sheet metal part from shifting, and the guide structure of the slide rods 4 eliminates die offset errors. Bidirectional punching makes the sheet metal part subjected to uniform force, avoids surface damage caused by traditional mechanical springback, and significantly improves product yield and processing accuracy.

[0023] As a technical optimization of this utility model, the fixing mechanism includes a threaded rod 12 rotatably connected to the inner wall of the rectangular hole 11, a servo motor 14 whose output end is fixedly connected to the threaded rod 12 is installed on the outer wall of the intermediate plate 5, and clamping plates 15 are threadedly connected to both ends of the outer wall of the threaded rod 12. A limit rod 13 is fixedly connected to the inner wall of the rectangular hole 11, and both clamping plates 15 are slidably connected to the limit rod 13.

[0024] In this embodiment: the sheet metal is placed between two clamping plates 15, the servo motor 14 is started, which drives the threaded rod 12 to rotate. The threaded rod 12 further drives the two clamping plates 15 to move synchronously relative to each other along the limiting rod 13, thereby fixing the sheet metal to prevent it from shifting during punching and improving the yield rate.

[0025] As a technical optimization of this utility model, the clamping plate 15 is L-shaped.

[0026] In this embodiment, the clamping plate 15 is set in an L-shape to facilitate the fixing of sheet metal.

[0027] As a technical optimization of this utility model, the inner wall of the clamping plate 15 is provided with a rubber pad.

[0028] In this embodiment, a rubber pad is provided on the inner wall of the clamping plate 15 to prevent damage to the sheet metal.

[0029] As a technical optimization of this utility model, the thread directions at both ends of the outer wall of the threaded rod 12 are opposite.

[0030] In this embodiment, by setting the thread directions at both ends of the outer wall of the threaded rod 12 to be opposite, it is convenient that when the threaded rod 12 rotates, it can drive the two clamping plates 15 to move synchronously relative to each other or in opposite directions.

[0031] As a technical optimization of this utility model, a controller is provided on the outer wall of the intermediate plate 5, and the electric push rod 3 and the servo motor 14 are both electrically connected to the controller.

[0032] In this embodiment, the controller facilitates the normal operation of the electric actuator 3 and the servo motor 14.

[0033] The working principle and usage process of this utility model are as follows: First, the sheet metal is placed between two clamping plates 15. The servo motor 14 is started, which drives the threaded rod 12 to rotate. The threaded rod 12 further drives the two clamping plates 15 to move synchronously relative to each other along the limiting rod 13, thus fixing the sheet metal. Next, the electric push rod 3 is started. When the electric push rod 3 drives the upper movable plate 6 to press down the upper die 7, the lower movable plate 6 and the lower die 8 are simultaneously driven upwards through the linkage mechanism of the first connecting rod 9 and the second connecting rod 10, realizing bidirectional punching motion. This utility model uses a single electric push rod 3 to drive a bidirectional linkage mechanism, which reduces equipment costs and ensures the synchronous accuracy of the upper and lower dies. The fixing mechanism effectively prevents sheet metal displacement, and the guide structure of the sliding rod 4 eliminates die offset errors. Bidirectional punching ensures uniform force on the sheet metal, avoiding surface damage caused by traditional mechanical springback, and significantly improving product yield and processing accuracy.

[0034] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A blanking device for sheet metal processing, comprising a base plate (1), characterized in that: A top plate (2) is provided on the upper side of the base plate (1). Slide rods (4) are fixedly connected at the four corners between the base plate (1) and the top plate (2). A punching mechanism is provided between the base plate (1) and the top plate (2). The punching mechanism includes a middle plate (5) fixedly connected to the outer wall of the four slide rods (4). A rectangular hole (11) is provided through the outer wall of the middle plate (5). A fixing mechanism is provided on the inner wall of the rectangular hole (11). Two symmetrically distributed movable plates (6) are slidably connected to the outer walls of the four slide rods (4). The lower end face of the movable plate (6) is provided with an upper die (7), and the upper end face of the lower movable plate (6) is provided with a lower die (8) that matches the upper die (7). The upper end face of the top plate (2) is equipped with an electric push rod (3) whose output end is fixedly connected to the upper movable plate (6). The left and right ends of the middle plate (5) are rotatably connected with a first connecting rod (9). The two ends of the first connecting rod (9) are rotatably connected with a second connecting rod (10). The other ends of the two second connecting rods (10) are rotatably connected to the two movable plates (6) respectively.

2. The blanking device for sheet metal processing according to claim 1, characterized in that: The fixing mechanism includes a threaded rod (12) rotatably connected to the inner wall of the rectangular hole (11). The outer wall of the intermediate plate (5) is equipped with a servo motor (14) whose output end is fixedly connected to the threaded rod (12). Both ends of the outer wall of the threaded rod (12) are threadedly connected to clamps (15). The inner wall of the rectangular hole (11) is fixedly connected to a limit rod (13). Both clamps (15) are slidably connected to the limit rod (13).

3. A blanking device for sheet metal processing according to claim 2, characterized in that: The clamp (15) is L-shaped.

4. A blanking device for sheet metal processing according to claim 2, characterized in that: The inner wall of the clamp (15) is provided with a rubber pad.

5. A blanking device for sheet metal processing according to claim 2, characterized in that: The threads at both ends of the outer wall of the threaded rod (12) are in opposite directions.

6. A blanking device for sheet metal processing according to claim 2, characterized in that: The outer wall of the intermediate plate (5) is equipped with a controller, and the electric push rod (3) and the servo motor (14) are both electrically connected to the controller.

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