Stamping die for bending and forming workpiece

Abstract

The utility model relates to a stamping die for bending and forming a workpiece, which comprises an upper die and a lower die and is ingenious in structural design, a forming insert core in the prior art is replaced by a first forming block and a second forming block, and when the upper die and the lower die are assembled, the upper surface of the first forming block is flush with the upper surface of the lower die; the upper surface of the second forming block is lower than that of the first forming block; a moving space for a workpiece to horizontally move is formed between the second forming block and the lower die; therefore, one end of the workpiece is pressed and fixed with the upper die through the first forming block, and the other end of the workpiece can move towards the stamping head in the moving space under the stamping force of the stamping head, namely, one end of the workpiece is static relative to the stamping die, and the other end can horizontally move relative to the stamping die to pull materials. In the forming process of the workpiece, only one end of the workpiece pulls the material, and the workpiece can freely and horizontally move in the moving space, so that the overall scratch is small, the external abrasion is not serious, and the quality of the workpiece is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of processing dies, and more specifically, to a stamping die for bending and forming workpieces. Background Art

[0002] A stamping die is a special process equipment for processing materials into parts in cold stamping processing, called a cold stamping die. Stamping is a pressure processing method that applies pressure to the material using a pressure die at room temperature to cause separation or plastic deformation, thereby obtaining the required parts.

[0003] In the prior art, a common bending stamping die is as Figure 1 shown, including an upper die assembly 1 and a lower die assembly 2; a vertically downward punch 1.1 is provided on the upper die assembly 1; at least a part of the lower end of the punch 1.1 protrudes from the lower surface of the upper die assembly 1, and the lower end of the punch 1.1 is in a conical structure; a forming insert 2.1 corresponding to the punch is provided on the lower die assembly 2; the upper surface of the forming insert 2.1 is a plane flush with the upper surface of the lower die assembly 2, and a stamping groove 2.2 matching the outer shape of the punch 1.1 and for the punch 1.1 to insert is provided on the upper surface of the forming insert 2.1; however, since the upper surface of the forming insert 2.1 is flush with the upper surface of the lower die assembly 2; during the process of the upper die assembly 1 and the lower die assembly 2 being closed up and down, the upper surface of the workpiece first fits with the lower surface of the upper die assembly 1, and at the same time, the lower surface of the workpiece fits with the upper surface of the lower die assembly 2. During the process of the punch 1.1 stamping the middle part of the workpiece into the stamping groove 2.2, both the upper and lower surfaces of the workpiece are simultaneously subjected to frictional force and extrusion force; and both ends of the workpiece are subjected to the pulling force of the middle part being pulled down and move towards the stamping groove 2.2, resulting in serious material pulling at both ends of the workpiece and serious scratching on the surface of the workpiece, reducing the quality of the workpiece. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a stamping die for bending and forming workpieces in view of the above-mentioned defects of the prior art.

[0005] The technical solution adopted by the present utility model to solve its technical problems is as follows: A stamping die for bending and forming a workpiece, comprising an upper die and a lower die. Among them, a vertically downward punching head is provided on the upper die; a feeding position for horizontally placing the workpiece, a shaping component disposed in the feeding position and corresponding to the punching head, and an installation groove for fixedly placing the shaping component are provided on the lower die; the shaping component includes a first shaping block and a second shaping block; the upper surface of the first shaping block is flush with the upper surface of the lower die; the upper surface of the second shaping block is lower than the upper surface of the first shaping block; a shaping groove for cooperating with the punching head to punch and shape the workpiece is provided between the first shaping block and the second shaping block; the shape of the shaping groove is adapted to the outer contour of the lower end of the punching head; when the upper die and the lower die are closed, an activity space for the horizontal movement of the workpiece is formed between the second shaping block and the lower die.

[0006] For the stamping die for bending and forming a workpiece of the present utility model, among them, the lower end of the punching head has a triangular structure with a wider upper part and a narrower lower part.

[0007] For the stamping die for bending and forming a workpiece of the present utility model, among them, the two opposite side surfaces of the lower end of the punching head are respectively a first inclined surface and a second inclined surface; the first inclined surface and the second inclined surface are both on the movement track of the workpiece; the first inclined surface and the second inclined surface are arranged at an angle.

[0008] For the stamping die for bending and forming a workpiece of the present utility model, among them, two forming surfaces that are relatively inclined and extended outward are respectively provided at the upper ends of the first shaping block and the second shaping block; the two forming surfaces are respectively parallel to the first inclined surface and the second inclined surface; the two forming surfaces and the inner side wall of the installation groove enclose the shaping groove that is communicated with the installation groove.

[0009] For the stamping die for bending and forming a workpiece of the present utility model, among them, the first shaping block and the second shaping block are tightly attached in sequence along the movement direction of the workpiece.

[0010] For the stamping die for bending and forming a workpiece of the present utility model, among them, the relatively two edges of the upper surface of the second shaping block located on the movement track of the workpiece are both provided with rounded corners.

[0011] For the stamping die for bending and forming a workpiece of the present utility model, among them, the upper die includes an upper die base and a first fixing module fixedly connected to the upper die base through a first positioning dowel pin; the punching head is fixedly installed on the first fixing module, and at least a part of the lower end of the punching head protrudes from the lower surface of the first fixing module.

[0012] The stamping die for bending and forming workpieces described in the present utility model, wherein the lower die includes a lower die base and a second fixing module fixedly connected to the lower die base through a second positioning dowel; the shaping component is embedded in the second fixing module;

[0013] The stamping die for bending and forming workpieces described in the present utility model, wherein the first fixing module is longitudinally slidably connected to the second fixing module through an inner guiding component;

[0014] The stamping die for bending and forming workpieces described in the present utility model, wherein the upper die base is longitudinally slidably connected to the lower die base through an outer guiding component.

[0015] The beneficial effect of the present utility model lies in that: the structure of this stamping die is ingeniously designed. By replacing the forming insert in the prior art with a first forming block and a second forming block, when the upper die and the lower die are closed, since the upper surface of the first forming block is flush with the upper surface of the lower die; the upper surface of the second forming block is lower than the upper surface of the first forming block; there is an activity space for the workpiece to move horizontally formed between the second forming block and the lower die; therefore, one end of the workpiece is pressed and fixed by the first forming block and the upper die, and the other end can move towards the punching head direction in the activity space under the punching force of the punching head, that is, one end of the workpiece is stationary relative to the stamping die, and the other end can move horizontally relative to the stamping die to pull the material; only one end of the workpiece pulls the material during the forming process, and it can freely move horizontally in the activity space, so the overall scratching is small, the appearance wear is not serious, and it does not affect the quality of the workpiece. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will further illustrate the present utility model in conjunction with the drawings and embodiments. The drawings in the following description are only partial embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings:

[0017] Figure 1 is a structural schematic diagram of a bending stamping die in the background art;

[0018] Figure 2 is a structural schematic diagram of the stamping die for bending and forming workpieces in the preferred embodiment of the present utility model. Detailed Embodiments

[0019] In the description, claims and drawings of the present invention, terms such as "first", "second", "third" and "fourth" are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally further include steps or units not listed, or may optionally further include other steps or units inherent to these processes, methods, products or devices.

[0020] References to "embodiments" in this document mean that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present invention. The phrase may not necessarily refer to the same embodiment each time it appears in the specification, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0021] "Plurality" means two or more. "And / or" describes the associated relationship of associated objects and indicates that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0022] Moreover, terms indicating directions such as "up, down, front, back, left, right, upper end, lower end, longitudinal" etc. are all referenced based on the attitude position of the device or equipment described in this solution during normal use.

[0023] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely below. Obviously, the described embodiments are partial embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] A stamping die for bending and forming a workpiece in a preferred embodiment of the present utility model, as Figure 2As shown in the figure, it includes an upper die 10 and a lower die 20. A vertically downward punching head 11 is provided on the upper die 10; on the lower die 20, there is a material waiting position for horizontally placing the workpiece 01, a shaping component 21 arranged in the material waiting position and corresponding to the punching head 11, and an installation groove 22 for fixedly placing the shaping component 21; in this embodiment, the workpiece can be a plate-shaped or tubular metal structure, or a plastic material, rubber material, etc. with strong plasticity; the shaping component 21 includes a first shaping block 211 and a second shaping block 212; the upper surface of the first shaping block 211 is flush with the upper surface of the lower die 20; the upper surface of the second shaping block 212 is lower than the upper surface of the first shaping block 211; between the first shaping block 211 and the second shaping block 212, there is a shaping groove 213 that cooperates with the punching head 11 to punch and shape the workpiece 01; the shape of the shaping groove 213 is adapted to the outer contour of the lower end of the punching head 11; when the upper die 10 and the lower die 20 are closed, an activity space 02 for the horizontal movement of the workpiece 01 is formed between the second shaping block 212 and the lower die 20. In this embodiment, the height of the activity space 02 is not less than the thickness of the workpiece, and the width of the activity space 02 is adapted to the width of the workpiece.

[0025] The structure of this stamping die is ingeniously designed. By replacing the existing forming insert with the first shaping block and the second shaping block, when the upper die and the lower die are closed, since the upper surface of the first shaping block is flush with the upper surface of the lower die; the upper surface of the second shaping block is lower than the upper surface of the first shaping block; an activity space for the horizontal movement of the workpiece is formed between the second shaping block and the lower die; therefore, one end of the workpiece is pressed and fixed by the first shaping block and the upper die, and the other end can move in the activity space towards the punching head under the punching force of the punching head, that is, one end of the workpiece is stationary relative to the stamping die, and the other end can move horizontally relative to the stamping die to pull the material; during the forming process of the workpiece, only one end pulls the material, and it can freely move horizontally in the activity space, so the overall scraping is small, the appearance wear is not serious, and it does not affect the quality of the workpiece.

[0026] In one embodiment, the lower end of the punching head 11 has a triangular structure with a wider upper part and a narrower lower part, which has a stable structure. Optionally, the lower end of the punching head can also be a rectangular or other polygonal structure.

[0027] Furthermore, the two opposite side surfaces of the lower end of the punching head 11 are respectively a first inclined surface 111 and a second inclined surface 112; both the first inclined surface 111 and the second inclined surface 112 are on the movement track of the workpiece 01; the first inclined surface 111 and the second inclined surface 112 are arranged at an angle. Preferably, the included angle between the first inclined surface 111 and the second inclined surface 112 is not greater than 180°.

[0028] Further, the upper ends of the first forming block 211 and the second forming block 212 are respectively provided with two forming surfaces that are inclined and extended outward relatively; the two forming surfaces are respectively parallel to the first inclined surface 111 and the second inclined surface 112; the two forming surfaces and the inner side wall of the installation groove 22 enclose a forming groove 213 that is communicated with the installation groove 22, which is convenient for rapid stamping and forming.

[0029] Further, the first forming block 211 and the second forming block 212 are closely attached in sequence along the moving direction of the workpiece 01, with a stable structure and convenient die adjustment.

[0030] Further, the opposite two side edges of the upper surface of the second forming block 212 located on the moving track of the workpiece 01 are both provided with rounded corners, which can further solve the problem of scratching, prevent the workpiece from being scratched when moving, and keep the bending angle stable.

[0031] Further, the upper die 10 includes an upper die base 101 and a first fixing module 103 fixedly connected to the upper die base 101 through a first positioning dowel 102; the punching head 11 is fixedly installed on the first fixing module 103, and at least a part of the lower end of the punching head 11 protrudes from the lower surface of the first fixing module 103, with a stable structure and convenient for rapid stamping and forming.

[0032] Further, the lower die 20 includes a lower die base 201 and a second fixing module 203 fixedly connected to the lower die base 201 through a second positioning dowel 202; the shaping assembly 21 is embedded in the second fixing module 203, with a stable structure.

[0033] Further, the first fixing module 103 is longitudinally slidably connected to the second fixing module 203 through an inner guiding assembly 104, with good positioning performance, preventing the punching head from deviating out of the range of the forming groove during the stamping process.

[0034] Further, the upper die base 101 is longitudinally slidably connected to the lower die base 201 through an outer guiding assembly 105, and through the inner guiding assembly 104 and the outer guiding assembly 105, the punching head and the forming groove are further accurately aligned, with accurate positioning.

[0035] It should be understood that for those of ordinary skill in the art, improvements or transformations can be made according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present utility model.

Claims

1. A stamping die for bending a workpiece, comprising an upper die and a lower die, characterized in that: The upper die is provided with a punch head pointing vertically downward; the lower die is provided with a waiting position for horizontal placement of the workpiece, a shaping component arranged in the waiting position and corresponding to the punch head, and a mounting groove for fixed placement of the shaping component; the shaping component includes a first shaping block and a second shaping block; the upper surface of the first shaping block is flush with the upper surface of the lower die; the upper surface of the second shaping block is lower than the upper surface of the first shaping block; a shaping groove is provided between the first shaping block and the second shaping block for cooperating with the punch head to stamp and shape the workpiece; the shape of the shaping groove is adapted to the outer contour of the lower end of the punch head; when the upper die and the lower die are closed, a movable space for horizontal movement of the workpiece is formed between the second shaping block and the lower die.

2. The stamping die for bending a workpiece according to claim 1, characterized in that: The lower end of the punch head is in a triangular structure that is wide at the top and narrow at the bottom.

3. The stamping die for bending a workpiece according to claim 2, characterized in that: The two opposite surfaces of the lower end of the punch head are respectively a first inclined surface and a second inclined surface; the first inclined surface and the second inclined surface are both on the moving track of the workpiece; the first inclined surface and the second inclined surface are arranged at an angle.

4. The stamping die for bending a workpiece according to claim 3, characterized in that: The upper end of the first molding block and the upper end of the second molding block are respectively provided with two molding surfaces that are relatively inclined and extended outward; the two molding surfaces are respectively parallel to the first inclined surface and the second inclined surface; the two molding surfaces and the inner side wall of the installation groove are mutually enclosed to form the molding groove connected to the installation groove.

5. The stamping die for bending a workpiece according to claim 1, characterized in that: The first forming block and the second forming block are tightly fitted in sequence along the moving direction of the workpiece.

6. The stamping die for bending a workpiece according to any one of claims 1 to 5, characterized in that: The edges on both sides of the upper surface of the second forming block which are located on the moving track of the workpiece are both rounded.

7. The stamping die for bending a workpiece according to claim 6, characterized in that: The upper die includes an upper die base and a first fixing module fixedly connected to the upper die base via a first positioning pin; the punch head is fixedly mounted on the first fixing module, and at least a portion of the lower end of the punch head protrudes from the lower surface of the first fixing module.

8. The stamping die for bending a workpiece according to claim 7, characterized in that: The lower die comprises a lower die base and a second fixing module fixedly connected to the lower die base via a second positioning pin; the shaping component is embedded in the second fixing module.

9. The stamping die for bending a workpiece according to claim 8, characterized in that: The first fixing module is longitudinally slidably connected to the second fixing module via an inner guide assembly.

10. The stamping die for bending a workpiece according to claim 8 or 9, characterized in that: The upper die base is longitudinally slidably connected to the lower die base via an outer guide assembly.

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