High-precision gradually-changing thin-wall stamping die

Abstract

The utility model relates to the technical field of stamping dies, in particular to a high-precision gradient thin-wall stamping die. Comprising an operation table, a mounting frame is arranged in the middle of the upper surface of the operation table, a hydraulic cylinder is arranged on the lower surface of the inner wall of the mounting frame, and an upper die is arranged on a piston rod of the hydraulic cylinder. The stamping stability of a machined part is effectively improved, the error frequency is reduced, the production yield of the machined part is improved, the demolding assembly assists the thin-wall part to be separated from the mold, operation is easy, the structure is simple, the fault frequency of the stamping mold is reduced, the work efficiency of demolding of the stamping mold is improved, time waste is avoided, and the production cost is reduced. And the machining period of the thin-wall part is greatly shortened, economic benefits are increased, and therefore the practicability of the stamping die is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping dies, in particular to a high-precision gradually changing thin-wall stamping die. Background Art

[0002] At present, stamping dies are special process equipment used to process materials (metal or non-metal) into parts (or semi-finished products) in cold stamping. They are called cold stamping dies (commonly known as cold stamping dies). Stamping is a pressure processing method that uses a die installed on a press to apply pressure to the material at room temperature to separate or plastically deform it, thereby obtaining the required parts. In the process of processing thin-walled pipe models, stamping dies are required for punching.

[0003] There are many existing technologies for thin-wall stamping dies, such as:

[0004] Chinese patent publication number CN219851695U discloses a thin-walled pipe stamping forming die, which includes a back plate, a die core, a stamping die hole, a positioning plate and a lower die plate. The back plate is arranged on the rear side of the upper end surface of the lower die plate, the die core is fixedly arranged on the front side of the back plate, the stamping die hole is arranged inside the upper surface of the die core, a guide slide groove is arranged inside the back plate, a guide slide plate is arranged inside the guide slide groove, a positioning plate is arranged on the front side of the guide slide plate, a lower bottom plate is arranged on the rear side of the guide slide plate, a slider is arranged on the upper side of the guide slide plate, a movable cavity groove is arranged inside the back plate, a push plate is arranged inside the movable cavity groove, and a threaded screw is arranged on the right side of the push plate. The utility model has a reasonable structure. The positioning plate can be arranged to clamp and fix the pipe from the bottom side, which is convenient for positioning the pipe. At the same time, the push plate and the slider can drive the positioning plate to move up and down, so that the spacing between the positioning plate and the die core can be adjusted, which is convenient for punching pipes of different diameters and specifications, and has a wide range of applications.

[0005] It can be seen that most stamping dies have complex structures. When producing thin-walled parts, it is inevitable that the thin-walled parts will stick to the upper die, making demolding more difficult, which reduces the work efficiency of stamping die production and causes a waste of time. In addition, the waste needs to be removed from the lower die, which increases the workload of the stamping die, thereby reducing the practicality of the stamping die.

[0006] In view of this, we propose a high-precision gradient thin-wall stamping die. Utility Model Content

[0007] The utility model aims to solve the above disadvantages and provide a high-precision gradual thin-wall stamping die with a demoulding component to assist in the release of thin-walled parts.

[0008] The position of the workpiece is stabilized by the clamping component, the stamping die is accurately positioned by the positioning component, and the demoulding component assists the thin-walled part to be separated from the die.

[0009] Therefore, the utility model provides a high-precision gradual thin-wall stamping die, which includes an operating table, a mounting frame is arranged in the middle of the upper surface of the operating table, a hydraulic cylinder is arranged on the lower surface of the inner wall of the mounting frame, an upper die is arranged on the piston rod of the hydraulic cylinder, a lower die is arranged on the upper surface of the operating table, the lower die is located directly below the upper die, a waste hole is opened on the upper surface of the operating table, the opening of the waste hole is aligned with the opening of the lower die, and a waste box for storing waste is arranged below the operating table;

[0010] A demoulding assembly for assisting in demoulding thin-walled parts is provided inside the upper mold, and positioning assemblies are provided on both sides of the upper mold and both sides of the lower mold. The positioning assemblies are used to increase the accuracy of the upper and lower molds during stamping, and clamping assemblies for stabilizing the position of the workpiece are provided on both sides of the upper surface of the operating table.

[0011] As a further improvement of the present technical solution, the clamping assembly includes at least a pad, pads are provided on both sides of the upper surface of the operating table, and the two pads are on both sides of the lower mold, a bidirectional cylinder is provided inside the pad, and the piston rods at both ends of the bidirectional cylinder are provided with clamps.

[0012] As a further improvement of the present technical solution, the demoulding assembly includes at least a mounting groove, the upper mold is provided with a mounting groove inside, a multi-stage cylinder is arranged inside the mounting groove, a lifting ring is arranged on the piston rod of the multi-stage cylinder, and a demoulding ring is arranged on the side of the lifting ring away from the multi-stage cylinder.

[0013] As a further improvement of the present technical solution, the positioning assembly includes at least a fixing plate, fixing plates are provided on both sides of the lower mold close to the inner wall of the mounting frame, a positioning shaft is provided on the upper surface of the fixing plate, and positioning blocks are provided on both sides of the upper mold close to the inner wall of the mounting frame, the positioning blocks are provided with positioning grooves for sliding connection with the positioning shaft, and the end of the positioning shaft away from the fixing plate is fixedly connected to the lower surface inside the mounting frame.

[0014] As a further improvement of the present technical solution, a buffer ring is arranged on the side of the demoulding ring away from the lifting ring. The buffer ring is made of high temperature resistant and wear resistant material, and the outer wall and inner wall of the demoulding ring are uniformly made of high wear resistant material.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] In the high-precision gradient thin-wall stamping die, the position of the workpiece is stabilized by the clamping component, and the stamping die is accurately positioned by the positioning component, which effectively improves the stability of the stamping of the workpiece, reduces the frequency of errors, and improves the yield rate of the workpiece production. The demoulding component then assists the thin-walled workpiece to be separated from the die. This has not only simple operation and structure, but also reduces the frequency of failure of the stamping die and improves the efficiency of demoulding the stamping die, avoiding time waste, greatly shortening the processing period of thin-walled workpieces, and improving economic benefits, thereby improving the practicability of the stamping die. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is described in more detail below by way of example with reference to the accompanying drawings, in which:

[0018] Figure 1 It is a schematic diagram of the structure of the stamping die of the utility model;

[0019] Figure 2 It is a schematic diagram of the layered structure of the stamping die of the utility model;

[0020] Figure 3 For the utility model Figure 2 The enlarged structural diagram at A in the middle;

[0021] Figure 4 It is a schematic diagram of the layered structure of the demoulding component of the utility model.

[0022] The meaning of each number in the figure is:

[0023] 10. Operating table; 11. Clamping assembly; 111. Pad; 112. Two-way cylinder; 113. Clamping plate; 12. Waste hole;

[0024] 20. Mounting frame; 21. Hydraulic cylinder; 22. Upper mold; 23. Demolding assembly; 231. Mounting groove; 232. Multi-stage cylinder; 233. Lifting ring; 234. Demolding ring; 2341. Buffer ring; 24. Lower mold;

[0025] 30. Positioning assembly; 31. Fixing plate; 32. Positioning shaft; 33. Positioning block; 34. Positioning groove;

[0026] 40. Waste box. DETAILED DESCRIPTION

[0027] Most stamping dies have complex structures. When producing thin-walled parts, it is inevitable that the thin-walled parts will stick to the upper die, making demolding more difficult, which reduces the work efficiency of stamping die production and causes a waste of time. In addition, the waste needs to be removed from the lower die, which increases the workload of the stamping die, thereby reducing the practicality of the stamping die.

[0028] See also Figure 1-Figure 4 The embodiment of the utility model shown in the figure comprises an operating table 10, a mounting frame 20 is arranged in the middle of the upper surface of the operating table 10, a hydraulic cylinder 21 is arranged on the lower surface of the inner wall of the mounting frame 20, an upper mold 22 is arranged on the piston rod of the hydraulic cylinder 21, a lower mold 24 is arranged on the upper surface of the operating table 10, and the lower mold 24 is located directly below the upper mold 22, a waste hole 12 is opened on the upper surface of the operating table 10, the opening of the waste hole 12 is aligned with the opening of the lower mold 24, and a waste box 40 for storing waste is arranged below the operating table 10; a demoulding component 23 for assisting the demoulding of thin-walled parts is arranged inside the upper mold 22, and positioning components 30 are arranged on both sides of the upper mold 22 and both sides of the lower mold 24, and the positioning components 30 are used to increase the accuracy of the upper mold 22 and the lower mold 24 during stamping, and clamping components 11 for stabilizing the position of the workpiece are arranged on both sides of the upper surface of the operating table 10.

[0029] First, the specific structure of the clamping assembly 11 is disclosed. The clamping assembly 11 at least includes a pad 111. Pads 111 are provided on both sides of the upper surface of the operating table 10, and the two pads 111 are on both sides of the lower mold 24. A two-way cylinder 112 is provided inside the pad 111, and piston rods at both ends of the two-way cylinder 112 are provided with clamps 113.

[0030] The improvement lies in: connecting the two-way cylinder 112 to a power source to make it work, and through the pushing work of the piston rod of the two-way cylinder 112, the clamp 113 is moved away from the pad 111. At this time, the workpiece can be placed on the upper surface of the lower mold 24, and at the same time, it is also located on the upper surfaces of the two pads 111, and then the clamp 113 is used to clamp the workpiece through the work of resetting the piston rod of the two-way cylinder 112, so that the position of the workpiece is stabilized, and then it is stamped, which effectively improves the stability of the stamping of the workpiece, reduces the frequency of errors, and improves the yield of the workpiece production, thereby improving the economic benefits.

[0031] Secondly, the specific structure of the demolding assembly 23 is disclosed. The demolding assembly 23 at least includes a mounting groove 231. The upper mold 22 has a mounting groove 231 inside. A multi-stage cylinder 232 is arranged inside the mounting groove 231. The piston rod of the multi-stage cylinder 232 is provided with a lifting ring 233. A demolding ring 234 is arranged on the side of the lifting ring 233 away from the multi-stage cylinder 232.

[0032] The improvement lies in: connecting the multi-stage cylinder 232 to a power source to make it work, and the lifting ring 233 is moved downward by the pushing work of the piston rod of the multi-stage cylinder 232. At the same time, the demoulding ring 234 presses the thin-walled part downward to make the thin-walled part separate from the interior of the upper mold 22, and then the demoulding ring 234 is received into the interior of the mounting groove 231 by the resetting work of the piston rod of the multi-stage cylinder 232 to prevent it from affecting the next operation of the stamping mold. It is not only simple to operate, but also simple in structure, which reduces the frequency of failure of the stamping mold, and improves the demoulding efficiency of the stamping mold, avoids wasting time, greatly shortens the processing period of thin-walled parts, and improves economic benefits, thereby improving the practicability of the stamping mold.

[0033] The specific structure of the positioning assembly 30 is disclosed again. The positioning assembly 30 at least includes a fixing plate 31. Fixing plates 31 are provided on both sides of the lower mold 24 close to the inner wall of the mounting frame 20. A positioning shaft 32 is provided on the upper surface of the fixing plate 31. Positioning blocks 33 are provided on both sides of the upper mold 22 close to the inner wall of the mounting frame 20. The positioning blocks 33 are provided with positioning grooves 34 for sliding connection with the positioning shaft 32. The end of the positioning shaft 32 away from the fixing plate 31 is fixedly connected to the lower surface inside the mounting frame 20.

[0034] The improvement lies in: connecting the hydraulic cylinder 21 to a power source to make it work, and through the pushing work of the piston rod of the hydraulic cylinder 21, the upper mold 22 is moved closer to the lower mold 24. At the same time, the positioning block 33 moves downward on the positioning shaft 32. Similarly, when the piston rod of the hydraulic cylinder 21 is reset, the positioning block 33 moves upward on the positioning shaft 32, which plays a role in positioning the stamping die, which not only increases the stability of the use of the stamping die, but also improves the accuracy of the stamping die production, and also improves the yield rate of the stamping die production parts, thereby increasing the economic benefits.

[0035] Taking into account the thin thickness of the thin-walled parts, the demolding assembly 23 will increase the friction with the upper surface of the thin-walled parts during the demolding process, which may easily cause low quality of the thin-walled parts. Therefore, a buffer ring 2341 is provided on the side of the demolding ring 234 away from the lifting ring 233. The buffer ring 2341 is made of high temperature resistant and wear-resistant material, and the outer wall and inner wall of the demolding ring 234 are evenly made of high wear-resistant material.

[0036] The improvement lies in that: by providing a buffer ring 2341, the wear on the upper surface of the thin-walled part can be alleviated, and the buffer ring 2341 and the demoulding ring 234 are both made of highly wear-resistant materials, which effectively reduces the frequency of damage to the stamping die, increases the service life of the stamping die, avoids economic losses, and thus improves the practicability of the stamping die.

[0037] In summary, the working principle of this scheme is as follows: first, the two-way cylinder 112 is powered on to make it work, and the clamping plate 113 is moved away from the pad 111 through the pushing work of the piston rod of the two-way cylinder 112. At this time, the workpiece can be placed on the upper surface of the lower mold 24, and at the same time, it is also located on the upper surfaces of the two pads 111, and then the clamping plate 113 clamps the workpiece through the resetting work of the piston rod of the two-way cylinder 112. After that, the hydraulic cylinder 21 is powered on to make it work, and the upper mold 22 is moved closer to the lower mold 24 through the pushing work of the piston rod of the hydraulic cylinder 21. At the same time, the positioning block 33 moves downward on the positioning shaft 32, and When the upper die 22 is pressed, the waste material falls from the hole of the lower die 24 into the waste hole 12 and enters the interior of the waste box 40. After the stamping is completed, when the piston rod of the hydraulic cylinder 21 is reset, the positioning block 33 moves upward on the positioning shaft 32 and moves the upper die 22 upward. At this time, the multi-stage cylinder 232 is powered on to make it work. The lifting ring 233 is moved downward by the pushing work of the piston rod of the multi-stage cylinder 232. At the same time, the demolding ring 234 presses the thin-walled part downward to separate the thin-walled part from the interior of the upper die 22. The demolding ring 234 is received into the interior of the mounting groove 231 by the resetting work of the piston rod of the multi-stage cylinder 232, and the stamping work of the thin-walled part is completed.

[0038] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A high-precision, gradually changing, thin-walled stamping die, comprising an operating table (10), characterized in that: A mounting frame (20) is arranged in the middle of the upper surface of the operating table (10), a hydraulic cylinder (21) is arranged on the lower surface of the inner wall of the mounting frame (20), an upper mold (22) is arranged on the piston rod of the hydraulic cylinder (21), a lower mold (24) is arranged on the upper surface of the operating table (10), the lower mold (24) is located directly below the upper mold (22), a waste hole (12) is opened on the upper surface of the operating table (10), the opening of the waste hole (12) is aligned with the opening of the lower mold (24), and a waste box (40) for storing waste is arranged below the operating table (10); A demoulding assembly (23) for assisting in demoulding of thin-walled parts is arranged inside the upper mold (22), positioning assemblies (30) are arranged on both sides of the upper mold (22) and both sides of the lower mold (24), and the positioning assemblies (30) are used to increase the accuracy of the upper mold (22) and the lower mold (24) during stamping, and clamping assemblies (11) for stabilizing the position of the workpiece are arranged on both sides of the upper surface of the operating table (10).

2. The high-precision gradually changing thin-wall stamping die according to claim 1, characterized in that: The clamping assembly (11) at least comprises a pad (111), and pads (111) are arranged on both sides of the upper surface of the operating table (10), and the two pads (111) are on both sides of the lower mold (24), and a bidirectional cylinder (112) is arranged inside the pad (111), and the piston rods at both ends of the bidirectional cylinder (112) are provided with clamps (113).

3. The high-precision gradually changing thin-wall stamping die according to claim 1, characterized in that: The demoulding assembly (23) comprises at least a mounting groove (231), the upper mold (22) is provided with a mounting groove (231), a multi-stage cylinder (232) is arranged inside the mounting groove (231), a lifting ring (233) is arranged on the piston rod of the multi-stage cylinder (232), and a demoulding ring (234) is arranged on the side of the lifting ring (233) away from the multi-stage cylinder (232).

4. The high-precision gradually changing thin-wall stamping die according to claim 1, characterized in that: The positioning assembly (30) at least comprises a fixing plate (31), the fixing plates (31) are arranged on both sides of the lower mold (24) close to the inner wall of the mounting frame (20), the upper surface of the fixing plate (31) is arranged with a positioning shaft (32), the upper mold (22) is arranged on both sides of the inner wall of the mounting frame (20), the positioning blocks (33) are provided with positioning grooves (34) for sliding connection with the positioning shaft (32), and the end of the positioning shaft (32) away from the fixing plate (31) is fixedly connected to the lower surface inside the mounting frame (20).

5. The high-precision gradually changing thin-wall stamping die according to claim 3, characterized in that: A buffer ring (2341) is arranged on one side of the demoulding ring (234) away from the lifting ring (233); the buffer ring (2341) is made of a high temperature resistant and wear resistant material; and the outer wall and the inner wall of the demoulding ring (234) are uniformly made of a highly wear resistant material.

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