A stamping device with a positioning structure

Abstract

This utility model relates to the field of stamping equipment technology, specifically to a stamping device with a positioning structure. It includes a stamping device body, a hydraulic telescopic assembly vertically mounted on the upper part of the body, and a horizontally connected upper mounting plate. A punch and a positioner are mounted on the lower side of the upper mounting plate. A stamping table is mounted below the punch, and a driving cavity is provided within the stamping table. A slotted hole communicating with the driving cavity is provided on the upper side of the stamping table. A positioning post is vertically arranged within the slotted hole, and its lower end is connected to the output end of a hydraulic rod within the driving cavity. A hydraulic rod is arranged along the length of the slotted hole within the driving cavity. At least three slotted holes are arranged radially from the center on the upper side of the stamping table. A punch is located above, and a positioner is welded to each side. The hydraulic rod and positioning posts are all matched. Four positioning posts penetrating the outer wall are mounted on the upper part of the stamping table, and the lower part is connected to a support platform. This solves the problem of needing to change different dies for positioning when stamping workpieces of different sizes.

Description

Technical Field

[0001] This utility model relates to the field of stamping equipment technology, and specifically to a stamping device with a positioning structure. Background Technology

[0002] In recent years, stamping has become a widely used and well-established process in modern industrial production, capable of manufacturing various metal and non-metal parts. As market competition intensifies, the demands on stamping equipment have increased, requiring greater applicability. Traditional stamping equipment, with its specific design for different metal sizes, leads to higher production costs and increased complexity, consuming significant manpower, resources, and capital. On one hand, different sizes of sheet metal require manual replacement of different stamping dies, wasting considerable time, manpower, and resources, thus hindering production efficiency. On the other hand, stamping relies on the pressure to deform the material, but during the stamping process, the significant impact force on the dies often causes material displacement and inadequate positioning, severely affecting product quality and potentially leading to safety accidents. Therefore, our company has developed a stamping device with an in-situ positioning structure suitable for stamping production to solve these problems. Utility Model Content

[0003] The purpose of this invention is to provide a stamping device with a positioning structure to solve the problem mentioned in the background art that different molds need to be changed for positioning when stamping plate-shaped workpieces of different sizes.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A stamping device with a positioning structure includes a stamping device body. A hydraulic telescopic assembly is vertically mounted on the upper part of the stamping device body, with the telescopic end of the hydraulic telescopic assembly facing downwards and horizontally connected to an upper mounting plate. A punch and a positioner are mounted on the lower side of the upper mounting plate. A stamping table is mounted on the stamping device body below the punch. A driving cavity is provided inside the stamping table. A slot is provided on the upper side of the stamping table, communicating with the driving cavity. A positioning post is vertically arranged inside the slot, with its upper end protruding from the upper side of the stamping table. A hydraulic rod is arranged in the driving cavity along the length of the slot. The lower end of the positioning post is connected to the output end of the hydraulic rod inside the driving cavity. At least three hydraulic rods and positioning posts are arranged radially from the center on the upper side of the stamping table with the slot. At least three hydraulic rods and positioning posts are also provided.

[0006] A further technical solution involves connecting a pusher column to the bottom of the positioning column within the drive chamber. The pusher column is connected to the telescopic end of the hydraulic rod. Hydraulic oil is supplied to the hydraulic cylinder via an oil pipe, pushing the piston within it to move. The piston's movement causes the telescopic rod to extend and retract. The connection between the telescopic rod and the pusher column ensures that the movement of the pusher column aligns with the extension and retraction of the telescopic rod, thereby moving the positioning column.

[0007] A further technical solution involves a support platform located below the stamping table. The bottom side of the stamping table has a mounting hole communicating with the drive chamber. The hydraulic rod is installed in the mounting hole, with the portion of the hydraulic rod positioned outside the stamping table fixed to the upper side of the support platform. The hydraulic pump draws oil from the oil tank, and the hydraulic oil enters the high-pressure chamber of the hydraulic cylinder through a pipeline, pushing the piston to move. The hydraulic rod connects to the push column, causing the push column to move in the extension / retraction direction.

[0008] A further technical solution involves providing U-shaped placement grooves along the length of the hole walls on both sides of the slot. Several spheres are rolled within the two U-shaped placement grooves. The width of the groove opening is smaller than the diameter of the spheres, and parts of the spheres protrude from the groove openings and roll in contact with the side of the positioning post. When the positioning post is moved by the pushing post, the spheres fix the positioning post in the middle of the slot. The moving positioning post contacts the spheres on both sides, and the pushing post drives the positioning post to move. The friction between the positioning post and the spheres drives the rotation of the spheres, thereby reducing the friction of the positioning post in the slot.

[0009] A further technical solution involves providing a positioning hole on the upper side of the stamping table, aligned with the positioner. When the upper hydraulic telescopic component moves downward, the positioner and the positioning hole directly below approach each other until the two structures fit together, thus completing the punching of the stamping target material.

[0010] A further technical solution involves connecting the bottom of the upper mounting plate to a spring. The spring contains a vertically mounted cylinder. A cylindrical telescopic cavity is mounted on the top of the upper mounting plate, with holes aligned with the cylinder inside the spring. A fixing plate is mounted below the spring, and a punch is fixedly mounted below the fixing plate. When the hydraulic telescopic assembly moves downwards, and the punch connects to the stamping plate, the spring contracts due to the downward pressure from the hydraulic telescopic device. When stamping is complete, the hydraulic telescopic device moves upwards, and the spring releases as the punch leaves the stamping table.

[0011] A further technical solution involves installing a punching hole directly below the punch, penetrating the stamping table. When the hydraulic telescopic assembly starts operating, it moves the punch downwards, placing the stamping plate on the stamping table. As the punch passes through the stamping plate, it passes downwards through the punching hole. When the stamping is complete, the punch moves upwards and leaves the punching hole.

[0012] Compared with existing technologies, the beneficial effects of this utility model are as follows: By setting positioning posts, the position of the stamping material can be restricted, thereby achieving accuracy and yield of the stamped material and solving the problem of accidents and poor quality caused by inadequate material fixation in the stamping device. The positioning posts can be adjusted by setting slots and hydraulic rods, allowing stamping of different specifications of materials to be completed on a single stamping device without mold replacement, reducing the time and manpower spent on mold changes. Attached Figure Description

[0013] Figure 1 This utility model describes a stamping device with a positioning structure.

[0014] Figure 2 This is a schematic diagram of the structure of a stamping table according to the present invention.

[0015] Figure 3 for Figure 1 A magnified view of point A in the image.

[0016] Figure 4 This is a cross-sectional schematic view of a perforated strip according to the present invention.

[0017] Figure 5 This is a schematic diagram of a cylinder and a spring according to the present invention.

[0018] Icons: 1-Pressing device body, 2-Hydraulic rod, 3-Positioning column, 4-Punch, 5-Positioner, 6-Hydraulic telescopic assembly, 7-Positioning hole, 8-Supporting platform, 9-Push column, 11-Strip hole, 12-Pressing hole, 13-Pressing table, 14-Spring, 15-Upper mounting plate, 16-Spherical body, 17-Cylindrical telescopic cavity, 18-Fixed platform, 19-Sliding hole, 20-Cylinder, 21-U-shaped placement groove. Detailed Implementation

[0019] 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 illustrative of the present utility model and are not intended to limit the present utility model.

[0020] Figures 1 to 4 The following is an embodiment of the present invention.

[0021] Example 1:

[0022] like Figure 1As shown, a stamping device with a positioning structure includes a stamping device body 1. A hydraulic telescopic assembly 6 is vertically mounted on the upper part of the stamping device body 1, with the telescopic end of the hydraulic telescopic assembly 6 facing downwards and horizontally connected to an upper mounting plate 15. A punch 4 and a positioner 5 are mounted on the lower side of the upper mounting plate 15. A stamping table 13 is mounted on the stamping device body 1 below the punch 4. A driving cavity is provided inside the stamping table 13. A slotted hole 11 communicating with the driving cavity and a stamping hole 14 vertically aligned with the punch are provided on the upper side of the stamping table 13. A positioning post 3 is vertically arranged inside the slotted hole 11, with the upper end of the positioning post 3 protruding from the upper side of the stamping table 13. The stamping plate is placed inside at least three positioning posts 3 and fixed inside by the positioning posts 3. A hydraulic rod 2 is installed in the moving cavity along the length of the slot 11. The lower end of the positioning pin 3 is connected to the output end of the hydraulic rod 2 in the driving cavity. When using stamping plates of different specifications, the hydraulic rod pushes the piston in the cylinder to move horizontally by inputting hydraulic oil, so as to realize the movement of the positioning pin 3 to adapt to the stamping plates of different specifications. After the stamping plate is fixed, the hydraulic telescopic assembly 6 inputs hydraulic oil through the oil pipe, pushes the piston in it to move, and then drives the punch 4 to move vertically downward until the punch 4 passes through the stamping plate and the punching hole 14, realizing the positioning and punching of the stamping plate. Then, the piston in the hydraulic telescopic device 6 is operated to move in the opposite direction, driving the punch 4 to retract, and the stamping plate is collected again to complete the punching process. The punch 4 is made of cemented carbide WC-Co to resist high-frequency impact wear. Punching will cause the temperature of the punch 4 to rise. The cemented carbide has good heat resistance, which improves the yield of the product. The punch 4 and the punch hole 14 are made of deep drawing process, and the material has a uniform elongation of ≥20% to avoid cracking. At least three of the punching table 13 of the strip hole 11 are arranged in a radial pattern on the upper side of the center. At least three of the hydraulic rod 2 and the positioning column 3 are also provided.

[0023] Example 2:

[0024] Based on the foregoing embodiments, such as Figure 1As shown, in this embodiment, the hydraulic rod 2 is horizontally placed below the side of the stamping table 13. A push column 9 is placed on the top end of the hydraulic rod 2, and a positioning column 3 is placed directly above the push column 9. Through a single-acting cylinder, oil enters from one side of the chamber and returns from the other side to achieve the telescopic effect. When the hydraulic rod 2 operates, it drives the push column 9 connected to the end of the hydraulic rod to move in the same direction, thereby pushing the positioning column 3, which is vertically set in the slot 11, to move the positioning column 3. The push column 9 and the hydraulic rod 2 are connected by flange bolts. The telescopic end of the hydraulic rod 2 is welded with a flange and fastened with high-strength M16 bolts. The flange surface is machined with a sawtooth anti-slip texture to increase friction and prevent finger slippage. This solution is suitable for applications with high thrust and low vibration. Because the pressure applied during punching is very high, the stamped plate will slide in all directions. Therefore, the flange bolt connection allows the maximum thrust to reach more than 500kN, and the structure is simple with low maintenance costs, effectively reducing costs. The positioning column 3 and the pushing column 9 are connected by welding. The welding voltage is set at 25V-30V to stabilize the voltage, prevent arc drift, and improve welding reliability. Narrow-gap submerged arc welding is used, with the weld bead angle set at 10°~15° to effectively reduce heat input and improve welding quality and stability. The pushing column 9 is a hollow structure. Both the pushing column 9 and the positioning column 3 are made of Cr... 12 MoV material is a type of steel that is wear-resistant, high-temperature resistant, and impact-resistant. Welding between identical materials can improve the stability of the structure.

[0025] Example 3:

[0026] Based on the foregoing embodiments, such as Figure 4 As shown, in this embodiment, the positioning post 3 has a transverse through-hole 11 in the middle of the stamping table 13. When different stamping plates are placed on the body 1 of the secondary stamping device, the positioning post 3 moves in the track of the through-hole 11, thereby enabling plates of different specifications to be punched on the body 1 of the secondary stamping device. The inside of the through-hole 11 consists of two U-shaped placement grooves on the left and right, and a sphere inside the U-shaped placement groove. The U-shaped placement groove is made of stainless steel mold, and its corrosion resistance helps to improve the service life of the through-hole 11. The upper and lower notches of the U-shaped placement groove extend outward to prevent the sphere 16 from falling off after the positioning post moves. The sphere 16 is coated with lubricating oil between it and the U-shaped placement groove to reduce the friction between the sphere 16 and the U-shaped placement groove, thereby improving the smoothness of the positioning post movement. The sphere 16 is made of silicon nitride ceramic, which is lightweight, effectively prevents the deformation of the U-shaped placement groove, is heat resistant, and has a Mohs hardness of 9.5, which is high hardness and good wear resistance, thus improving the service life and stability of the through-hole 11. The radius of the sphere 16 is set to be less than half the diameter of the positioning post 3 to prevent the positioning post 3 from shifting due to the gap between the spheres 16 when it moves, thereby improving the positioning effect on the stamped sheet.

[0027] Example 4:

[0028] Based on the foregoing embodiments, such as Figure 1 As shown in this embodiment, a positioning hole 7 is respectively placed directly below the positioner 5. The precise punching of the stamping sheet is achieved through the engagement of the positioner 5 and the positioning hole 7. The gap between the positioner 5 and the positioner 7 is calculated using the extreme value method. The diameter of the positioning hole 7 is 0.1 mm larger than the diameter of the positioner to ensure assembly feasibility and minimize wobbling. Furthermore, the positioning holes 7 are distributed diagonally on the workpiece to enhance positioning stability. The surface of the positioner 5 is plated with hard chrome with a thickness of 0.05 mm to improve its wear resistance and stability. A PTFE coating is applied to the surface of the positioner 5 to reduce the coefficient of friction.

[0029] Example 5:

[0030] Based on the foregoing embodiments, such as Figure 5 As shown, the upper mounting plate (15) is vertically provided with a sliding hole (19), and a cylinder (20) is slidably connected in the sliding hole (19). The lower end of the cylinder (20) is placed below the upper mounting plate (15) and is connected to a fixing plate (18). A spring (14) is sleeved on the lower side of the upper mounting plate (15) of the cylinder (20). The upper end of the spring (14) is fixedly connected to the lower side of the upper mounting plate (15), and the lower end is fixedly connected to the upper side of the fixing plate (18). The punch (4) is installed on the lower side of the fixing plate (18). In this embodiment, a spring 14 is placed on the lower part of the upper mounting plate 15 and the upper part of the punch 4. During the punching process, when the punch punches downwards, the cylinder 20 inside the spring 14 is compressed and moves upwards. A sliding hole 19 is fixed above the spring 14, opposite to the cylinder 20 inside the spring 14. As the cylinder 20 moves upwards into the sliding hole 19, the spring 14 is compressed. When the spring 14 is compressed to its maximum stroke or the cylinder 20 reaches the maximum stroke of the sliding hole 19, the spring 14 stops contracting and releases a downward impact force. A high-frequency impact is generated at the moment the punch 4 contacts the sheet metal. The spring 14 can convert the impact force into potential energy through elastic deformation, reducing the vibration energy transmitted to the equipment base. The spring 14 can also reduce the noise generated during punching. The preload of the spring is set to 25kN to maintain the alignment error of the upper and lower dies <0.02mm, thereby improving the quality of the punched products.

[0031] Although the present invention has been described herein with reference to several illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and modifications can be made to the components and / or layout of the subject matter combination within the scope of the disclosure, drawings, and claims. Besides variations and modifications to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. A stamping device with a positioning structure, characterized in that, The device includes a stamping device body (1), on which a hydraulic telescopic assembly (6) is vertically mounted. The telescopic end of the hydraulic telescopic assembly (6) faces downward and is horizontally connected to an upper mounting plate (15). A punch (4) and a positioner (5) are mounted on the lower side of the upper mounting plate (15). A stamping table (13) is mounted below the punch (4) on the stamping device body (1). A driving cavity is provided inside the stamping table (13). A slot (11) communicating with the driving cavity is provided on the upper side of the stamping table (13). A punching hole (12) is vertically aligned with the punch (4). A positioning post (3) is vertically arranged inside the slot (11). The upper end of the positioning post (3) protrudes from the upper side of the punching table (13). A hydraulic rod (2) is arranged in the drive cavity along the length direction of the slot (11). The lower end of the positioning post (3) is connected to the output end of the hydraulic rod (2) in the drive cavity. At least three of the two hydraulic rods (2) and positioning posts (3) are arranged in a radial pattern along the center on the upper side of the punching table (13) of the slot. At least three of the two hydraulic rods (2) and positioning posts (3) are provided in a matching manner.

2. The stamping device with a positioning structure according to claim 1, characterized in that: The bottom of the positioning column (3) is connected to a push column (9) in the drive cavity, and the push column (9) is connected to the telescopic end of the hydraulic rod (2).

3. A stamping device with a positioning structure according to claim 1, characterized in that: A support platform (8) is provided below the stamping table (13). The bottom side of the stamping table (13) is provided with a mounting hole that communicates with the drive cavity. The hydraulic rod (2) is installed in the mounting hole, and the part of the hydraulic rod (2) placed on the outside of the stamping table (13) is attached and fixed to the upper side of the support platform (8).

4. A stamping device with a positioning structure according to claim 1, characterized in that: The holes (11) on both sides are provided with U-shaped placement grooves (21) along their length. Several spheres (16) are rolled in the two U-shaped placement grooves (21). The width of the groove opening of the U-shaped placement groove (21) is smaller than the diameter of the sphere (16). A part of the sphere (16) protrudes from the groove opening of the U-shaped placement groove (21) and rolls against the side of the positioning post (3).

5. A stamping device with a positioning structure according to claim 1, characterized in that: The upper side of the stamping table (13) is provided with a positioning hole (7), which is aligned with the positioner (5).

6. A stamping device with a positioning structure according to claim 1, characterized in that: The upper mounting plate (15) is vertically provided with a sliding hole (19), and a cylinder (20) is slidably connected in the sliding hole (19). The lower end of the cylinder (20) is placed below the upper mounting plate (15) and is connected to a fixing plate (18). A spring (14) is sleeved on the lower side of the upper mounting plate (15) on the cylinder (20). The upper end of the spring (14) is fixedly connected to the lower side of the upper mounting plate (15), and the lower end is fixedly connected to the upper side of the fixing plate (18). The punch (4) is installed on the lower side of the fixing plate (18).

7. A stamping device with a positioning structure according to claim 1, characterized in that: A punching hole (12) is installed on the upper surface of the punching table (13), and the punching hole (12) is aligned with the punch (4) directly above it.

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