CN104338850B - The folding one-time formed diel of negative angle - Google Patents

Abstract

The invention discloses a stamping die for one-time forming of a negative folding angle, which comprises an upper die and a lower die. The lower mold base, the lower backing plate and the lower stripping plate are positioned and set. There is an elastic space between the lower stripping plate and the lower backing plate. A slider is provided on one side of the upper formwork, and one side of the slider is slidably connected to the side of the upper formwork. There is an elastic space between the slider and the upper backing plate, and the shape of the other side of the slider matches the negative angle shape of the product that needs to be folded with a negative angle; the lower backing plate is equipped with an elastic mechanism, which is located on the side of the lower stripping plate. A part of the negative-folding product is arranged between the upper template and the lower stripping plate, and a part is set on the elastic mechanism, which can elastically press one side of the lower stripping plate. The present invention can realize one-time forming of the negative folding angle, therefore, can effectively reduce the technological process, improve the production efficiency and reduce the production cost of the product.

Description

Stamping die with one-time forming with negative angle

technical field

The invention relates to a stamping die, in particular to a stamping die for one-time forming of a negative folding angle.

Background technique

Stamping die is a special process equipment for processing materials (metal or non-metal) into parts (or semi-finished products) in cold stamping processing, called cold stamping die (commonly known as cold stamping die). Bending refers to the stamping process of bending the sheet into the required angle and shape along the bending line. At present, metal structural parts often need to be bent at a negative angle. When bending a product at a negative angle in the prior art, the product must first be bent to 90 degrees through a stamping die, and then bent to a required negative angle. The above-mentioned negative angle folding process is complex, and requires two sets of stamping dies, two operations to form, resulting in increased manufacturing costs and labor costs, low production and processing efficiency, and high production costs.

Contents of the invention

In order to solve the above technical problems, the present invention proposes a stamping die for one-time forming of the negative angle. Using the stamping die, one-time forming of the negative angle can be realized. Therefore, the process can be effectively reduced, the production efficiency can be improved, and the production cost of the product can be reduced.

Technical scheme of the present invention is realized like this:

A stamping die for one-time molding of negative folded angles, comprising an upper die and a lower die, the upper die includes an upper die base positioned from top to bottom, an upper backing plate and an upper template, and the lower die includes a bottom-up The lower mold base, the lower backing plate and the lower stripping plate are positioned and arranged. There is an elastic space between the lower stripping plate and the lower backing plate. One side of the upper template is provided with a slider, and one side of the slider is It is slidingly connected to one side of the upper template, and there is an elastic space between the slider and the upper backing plate, and the shape of the other side of the slider matches the shape of the negative angle of the product to be folded; An elastic mechanism is provided on the backing plate, and the elastic mechanism is located on one side of the lower stripping plate. Part of the product to be folded with a negative angle is set between the upper template and the lower stripping plate, and a part is set on the elastic mechanism , the elastic mechanism can elastically press against one side of the lower release plate.

As a further improvement of the present invention, the elastic mechanism includes a fixed block and a roller bearing seat, the fixed block is fixed on the lower backing plate, and the roller bearing seat is located between the fixed block and the lower stripping plate , a first return spring is provided between the roller bearing seat and the fixed block, a roller shaft is provided between the roller bearing seat and the lower stripping plate, and the circumferential rotation of the roller shaft is positioned on the roller In the bearing seat, one end of the first return spring is positioned in the fixed block, and the other end of the first return spring elastically presses the roller bearing seat, so that the roller fixed on the roller bearing seat One side elastically presses the lower stripping plate.

As a further improvement of the present invention, the shape of the other side of the slider matches the negative angle shape of the product to be folded with a negative angle: the slider has a first support surface and a second support surface in the shape of a negative angle , a continuous bending surface is formed between the first support surface and the second support surface.

As a further improvement of the present invention, the structure with an elastic space between the lower stripping plate and the lower backing plate is: a second return spring is arranged between the lower stripping plate and the lower backing plate, and the first One end of the second return spring is positioned in the lower mold base, and the other end of the second return spring passes through the lower backing plate and elastically presses against the bottom of the lower stripping plate.

As a further improvement of the present invention, the structure with an elastic space between the slider and the upper backing plate is: a jacking pin is provided inside the upper backing plate, and a stop block is provided at one end of the jacking pin, The upper die base is provided with a third return spring, one end of the third return spring is positioned in the upper die base, and the other end of the third return spring elastically presses against one end of the ejector pin, so that the The stop block is stopped in the upper backing plate, so that the other end of the ejector pin elastically presses the slider, and makes the slider slide relative to the upper template by a certain distance beyond the upper template.

The beneficial effect of the present invention is that: the present invention provides a stamping die for one-time molding of the negative folding angle, including an upper die and a lower die, and by setting a slider on the upper die that can slide relative to the upper die, the The shape is designed to be consistent with the shape of the negative angle of the product that needs to be folded with a negative angle; and with the elastic mechanism set on the lower mold, it can realize the one-time forming of the negative angle, effectively reduce the process of folding the negative angle, improve production efficiency, and reduce the production of products cost.

Description of drawings

Fig. 1 is the structural representation of mold opening state of the present invention;

Fig. 2 is the structure schematic diagram of closed mold state of the present invention;

Fig. 3 is a schematic diagram of the working principle of the mold opening state before bending in the present invention;

Fig. 4 is a schematic diagram of the working principle of the pressing state of the present invention;

Fig. 5 is a schematic diagram of the working principle of the present invention in a 90-degree folded state;

Fig. 6 is a schematic diagram of the working principle of the closed mold state of the present invention;

Fig. 7 is a schematic diagram of the working principle of the mold opening state after bending according to the present invention.

In conjunction with the accompanying drawings, the following descriptions are made:

detailed description

As shown in Figures 1 and 2, a stamping die for one-time forming of negative angles includes an upper die and a lower die. The upper die includes an upper die base 1 positioned from top to bottom, an upper backing plate 2 and an upper die. Template 3, the lower mold includes a lower mold base 4 positioned from bottom to top, a lower backing plate 5 and a lower stripping plate 6, there is an elastic space between the lower stripping plate and the lower backing plate, and the upper One side of the template is provided with a slider 7, one side of the slider is slidingly connected to one side of the upper template, there is an elastic space between the slider and the upper backing plate, and the shape of the other side of the slider is It matches the shape of the negative angle of the product that needs to be folded with a negative angle; the lower backing plate is provided with an elastic mechanism, and the elastic mechanism is located on one side of the lower stripping plate, and a part of the product that needs to be folded with a negative angle is provided on the upper template and Between the lower stripping plates, a part is arranged on the elastic mechanism, and the elastic mechanism can elastically press against one side of the lower stripping plate. In the above structure, by setting a slider on the upper mold that can slide relative to the upper mold, the shape of one side of the slider is designed to be consistent with the shape of the negative angle of the product that needs to be folded at a negative angle; and in conjunction with the elastic force set on the lower mold The mechanism can realize the one-time forming of the negative angle, effectively reduce the process steps of the negative angle, improve the production efficiency, and reduce the production cost of the product.

Preferably, the elastic mechanism includes a fixed block 11 and a roller bearing seat 12, the fixed block is fixed on the lower backing plate, and the roller bearing seat is located between the fixed block and the lower stripping plate, so A first return spring 14 is arranged between the roller bearing seat and the fixed block, and a roller shaft 13 is arranged between the roller bearing seat and the lower stripping plate, and the roller shaft is circumferentially rotated and positioned on the roller In the bearing seat, one end of the first return spring is positioned in the fixed block, and the other end of the first return spring elastically presses the roller bearing seat, so that the roller fixed on the roller bearing seat One side elastically presses the lower stripping plate. In this way, when the mold is opened, the roller elastically lowers the plate first, and when the mold is closed, because the lower plate goes down together with the upper template, the roller will elastically press the product to be bent, so that the position on the fixed block is close slider so that the bend forms a negative angle that matches the shape of the slider.

Preferably, the structure on the other side of the slider that matches the shape of the negative angle of the product that needs to be folded is: the slider has a first support surface 8 and a second support surface 9 that are in the shape of a negative angle, so A continuous bending surface 10 is formed between the first supporting surface and the second supporting surface. As a preferred embodiment, the present invention is particularly suitable for bending a product requiring a negative angle to form a negative angle with a bending surface.

Preferably, the structure with an elastic space between the lower stripping plate and the lower backing plate is: a second return spring 15 is arranged between the lower stripping plate and the lower backing plate, and the second back spring 15 One end is positioned in the lower mold base, and the other end of the second returning spring passes through the lower backing plate and elastically presses against the bottom of the lower stripping plate. Through the above structure, the function of having an elastic space between the lower stripping plate and the lower backing plate can be realized, so that the lower stripping plate can be reset when the mold is opened.

Preferably, the structure with an elastic space between the slider and the upper backing plate is: a jacking pin 16 is arranged inside the upper backing plate, and a stop block 17 is arranged at one end of the jacking pin, and the A third return spring 18 is arranged in the upper die base, one end of the third return spring is positioned in the upper die base, and the other end of the third return spring elastically presses against one end of the ejector pin, so that the stop The stop block is stopped in the upper backing plate, so that the other end of the ejector pin elastically presses against the slider, and makes the slider slide relative to the upper template by a certain distance beyond the upper template. In this way, when the mold is closed, the upper template and the lower stripping plate are closed, and the part of the slider beyond the upper template starts to slide relative to the upper template, and the slider starts to squeeze the ejector pin and compress the third return spring. Under the action of the restoring force of the spring, the bottom of the slider exceeds the bottom of the upper template by a certain distance, which is beneficial to complete the stripping.

The present invention provides a stamping die with one-time negative bending angle. The working principle is as follows: before bending, see Figure 3, the slider and the upper template are located above the lower stripping plate, and the slider is located on one side of the upper template and opposite to the upper template Sliding beyond the upper template for a certain distance, the first return spring elastically presses the roller bearing seat, so that one side of the roller positioned in the roller bearing seat elastically presses the side corresponding to the lower release plate, and the lower release plate and the lower backing plate There is an elastic space between them, the elastic space makes the upper surface of the lower release plate flush with the upper surface of the roller bearing seat, and is used to support the product that needs to be folded at a negative angle, and a part of the product that needs to be folded at a negative angle is positioned and supported on the upper surface of the lower release plate , a part is positioned and supported on the upper surface of the roller housing. When bending, the upper template moves downward until it presses the part of the product to be folded with a negative angle on the lower release plate. At this time, the slider slides relative to the upper template and compresses the third return spring, see Figure 4. The upper formwork continues to descend, and the products to be folded with negative angles and the lower strips are driven downward by the upper formwork. At this time, the roller shaft rotates relative to the roller bearing seat. Specifically, it can be designed to rotate clockwise, and the first return spring begins to be driven. Compression, the second return spring between the lower stripping plate and the lower backing plate starts to compress, and begins to fold at an angle of 90 degrees, see Figure 5; the upper template continues to descend, and the products that need to be folded at a negative angle and the lower stripping plate are also driven by the upper mold. Then it goes down. At this time, since the first support surface and the second support surface of the slider are at a negative angle, as the upper template goes down, the roller will elastically press against the first return spring under the restoring force The product that needs to be folded with a negative angle should be close to the first support surface, and the product that needs to be folded with a negative angle should be bent into a negative angle that matches the bending surface of the slider and the shape of the negative angle, see Figure 6; open the mold after bending , under the action of the restoring force of the first return spring, the second return spring and the third return spring, the roller, the lower stripping plate and the slider return to the initial state, see FIG. 7 .

The above embodiments are detailed descriptions of preferred embodiments of the present invention with reference to the accompanying drawings. Those skilled in the art can make various modifications or changes to the above embodiments without departing from the essence of the present invention, all of which fall within the protection scope of the present invention.

Claims (3)

1. a folding one-time formed diel of negative angle, it is characterised in that: include that upper die and lower die, described upper mold include from upper And upper bolster (1), upper padding plate (2) and the cope match-plate pattern (3) of the setting of lower location, described lower mold includes positioning under setting from bottom to top Die holder (4), lower bolster (5) and lower de-plate (6), have elastic space, described upper mold between described lower de-plate and described lower bolster The side of plate is provided with slide block (7), and described slide block side is slidably connected with described cope match-plate pattern side, described slide block and described upper padding plate Between there is elastic space, described slide block opposite side shape and the negative angle mating shapes that need to roll over negative angle product；Described lower bolster Being provided with elastic body, described elastic body is positioned at described lower de-plate side, need to roll over a negative angle product part and be located at described upper mold Between plate and described lower de-plate, a part is located on described elastic body, and described elastic body can elasticity compress described lower de- The side of plate；Described elastic body includes fixed block (11) and roller bearing bearing (12), and described fixed block is fixed on described lower bolster On, described roller bearing bearing, between described fixed block and described lower de-plate, sets between described roller bearing bearing and described fixed block Having the first back-moving spring (14), be provided with roller bearing (13) between described roller bearing bearing and described lower de-plate, described roller bearing circumferentially rotates Being positioned in described roller bearing bearing, described first back-moving spring one end is positioned in described fixed block, described first back-moving spring Other end elasticity compresses described roller bearing bearing, make the described roller bearing side elasticity being fixed in described roller bearing bearing compress described under De-plate；Described slide block opposite side shape with the structure of the negative angle mating shapes that need to roll over negative angle product is: described slide block have in First supporting surface (8) of negative angle shape and the second supporting surface (9), the company of being formed between described first supporting surface and described second supporting surface Continuous folding surface (10).

The one-time formed diel of folding negative angle the most according to claim 1, it is characterised in that: described lower de-plate and described The structure between lower bolster with elastic space is: be provided with the second back-moving spring between described lower de-plate and described lower bolster (15), described second back-moving spring one end is positioned in described die shoe, and the described second back-moving spring other end is through under described Backing plate elasticity compresses the bottom of described lower de-plate.

The one-time formed diel of folding negative angle the most according to claim 1, it is characterised in that: described slide block and described on The structure between backing plate with elastic space is: be provided with jigger pin (16) in described upper padding plate, and described jigger pin one end is only provided with Link stopper (17), is provided with the 3rd back-moving spring (18) in described upper bolster, described 3rd back-moving spring one end is positioned described upper mold In seat, described 3rd back-moving spring other end elasticity compresses described jigger pin one end, makes described stopper stop in described upper pad In plate, make the other end elasticity of described jigger pin compress described slide block, and make the slip of described slide block the most described cope match-plate pattern exceed Described cope match-plate pattern certain distance.