CN220144539U - Core pulling device of stamping die - Google Patents

Abstract

The utility model provides a core pulling device of a stamping die, which relates to the technical field of stamping dies and adopts the following scheme: the die comprises an upper die plate and a female die, wherein the upper die plate is provided with a male die, a pressing plate is connected onto the male die, a plurality of core blocks which are annularly arranged are arranged between the male die and the pressing plate, a push pin is arranged on the upper die plate and positioned in the middle of the core blocks which are annularly arranged, a core block spring is arranged outside the core blocks, the female die comprises a left female die and a right female die which are separately arranged, a female die spring is connected between the left female die and the right female die, an inclined wedge is arranged on the upper die plate, the inclined wedge is positioned on the outer side of the female die, and corresponding inclined wedges are arranged on the outer sides of the left female die and the right female die. The utility model has the following effects: the purpose that the product is smoothly separated from the die after a necking part is formed on the product can be realized.

Description

Core pulling device of stamping die

Technical Field

The utility model relates to the technical field of stamping dies, in particular to a core pulling device of a stamping die.

Background

The stamping is a forming processing method for obtaining a workpiece (stamping part) with a required shape and size by applying external force to plates, strips, pipes, sectional materials and the like by using a press machine and a die to enable the plates, the strips, the pipes, the sectional materials and the like to generate plastic deformation or separation. The basic construction of a stamping die is already known in the art, as disclosed in patent document publication No. CN102189184B, and includes: the device comprises a base, a plurality of guide rods, a lower die, an upper die, a platform pressure head, a top plate and a connecting block, wherein the guide rods and the lower die are arranged on the base, the upper die is arranged on the lower die, a material cavity is respectively arranged on the upper die and the lower die, a pressure head hole through which the material cavity is communicated is further formed in the upper die, a plurality of guide rod holes are formed in the top plate, the upper ends of the guide rods are arranged in the guide rod holes, the connecting block is arranged on the upper portion of the top plate, and the platform pressure head is arranged below the top plate and is matched with the pressure head hole in shape. The workpiece is deformed under pressure by the cooperation of the upper die and the lower die to form a required shape, which is the integral structure of the stamping die.

In actual use, if some workpieces are required to be processed to form necking parts inwards, as in a stamping die for a shell disclosed in patent document with publication number of CN204182796U, a shell blank is horizontally placed on the upper surface of a die bottom block and positioned, the die bottom block is heated and softened, an upper die is stamped downwards, a punch head drives the die bottom block to move downwards, when the die bottom block is contacted with a die wall bottom plate, the die bottom block and the die wall block are just matched and spliced into a complete female die, the punch head abuts against a first layer and a second layer to continuously move downwards, a first spring and a second spring are compressed, the shell blank forms a tilted edge, when the die wall bottom plate descends to a certain extent, the die wall bottom plate pushes the die frame bottom plate to drive the die frame block to move downwards along a vertical block, the die frame block drives the slide block to move downwards by means of an oblique block, meanwhile, the slide block moves inwards by means of a horizontal thrust of the oblique block through a slide rail, and when a thin neck corresponds to the slide block, the tilted edge of the shell blank is abutted against a step part between an end head and a thin neck part to enter the thin neck part to form a reverse wrapping edge. However, when the product is necked inwards, the stamping die is recessed, so that the product is difficult to release from the die.

Disclosure of Invention

The utility model aims to solve the problem that after a necking part is formed on a product by the existing stamping die, the die and the product are difficult to separate, and provides and designs a core pulling device of the stamping die, so that the product can be smoothly separated from the die.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the core pulling device of the stamping die comprises an upper die plate and a female die, wherein the upper die plate is provided with a male die, a pressing plate is connected to the male die plate, a plurality of core blocks which are annularly arranged are arranged between the male die plate and the pressing plate, a push pin is arranged on the upper die plate and positioned in the middle of the core blocks which are annularly arranged, a core block spring is arranged outside the core blocks, the female die comprises a left female die and a right female die which are separately arranged, a female die spring is connected between the left female die and the right female die, an inclined wedge is arranged on the upper die plate, the inclined wedge is positioned on the outer side of the female die, and corresponding inclined wedges are arranged on the outer sides of the left female die and the right female die. When the upper template slides downwards, the inclined wedge and the push-up pin are driven to act downwards simultaneously, wherein: 1. the inclined wedges respectively act on the two separated concave dies to promote the left concave die and the right concave die to slide towards the center so as to form an integral (concave die); 2. the push-up pin acts on the core block to promote the core block to slide outwards; at this time, the die cooperates with the pellet to complete the stamping and form the necked-in shape. When the upper die plate is lifted upwards, the core blocks shrink and reset towards the center under the action of the core block springs, and the female dies are separated towards two sides under the action of the female die springs, so that the purpose that after a necking part is formed on a product, the product is smoothly separated from the die is achieved.

Further, a limit column is arranged outside the female die, and the inclined wedge is positioned in a gap between the female die and the limit column. The left die and the right die are limited when being outwards expanded under the action of the die springs.

Further, a guide groove is formed in the male die, and the core block is located in the guide groove and can slide along the guide groove. Limiting the movement of the core block on the male die, and moving along a limited direction to realize stable contraction and expansion movement.

Further, a slotted hole is formed in the core block, and a screw and a spacer bush are arranged in the slotted hole. The arrangement of the oblong holes limits the movable range of the core blocks, so that the core blocks stably slide in a certain range.

Further, each core block is identical in size and shape, each core block is correspondingly provided with a core block spring, the plurality of core block springs are annularly arranged, and a circle of core block springs are annularly arranged around the core block to hoop the core block.

Further, the upper template is provided with a discharging screw, and the upper template is connected with the male die through the discharging screw.

Further, a connecting spring is arranged between the upper die plate and the male die, and the upper die plate is connected with the male die through the connecting spring and the discharging screw.

Further, the male die is connected with the pressing plate through screws. The fastening connection between the male die and the pressing plate is realized.

Further, the left female die and the right female die are symmetrically arranged, and the female die springs are positioned on the opposite sides of the left female die and the right female die. When the wedge moves downwards, the left female die and the right female die move in a centering way, the female die spring is compressed, after stamping is completed, the wedge moves upwards, the female die spring is reset, the left female die and the right female die expand outwards, and the left female die and the right female die are separated.

Further, the male die is positioned between the left female die and the right female die. The pressing operation is smoothly realized.

From the above technical scheme, the utility model has the following advantages:

the scheme provides a stamping die's core pulling device, when the cope match-plate pattern slides downwards, drives to incline to wedge and push up the round pin and act on downwards simultaneously, wherein: 1. the inclined wedges respectively act on the two separated concave dies to promote the left concave die and the right concave die to slide towards the center so as to form an integral (concave die); 2. the push-up pin acts on the core block to promote the core block to slide outwards; at this time, the die cooperates with the pellet to complete the stamping and form the necked-in shape. When the upper die plate is lifted upwards, the core blocks shrink and reset towards the center under the action of the core block springs, and the female dies are separated towards two sides under the action of the female die springs, so that the purpose that after a necking part is formed on a product, the product is smoothly separated from the die is achieved.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an embodiment of the present utility model.

Fig. 2 is an enlarged schematic view of the structure at a in fig. 1.

Fig. 3 is a schematic view showing the arrangement of the core blocks in the embodiment of the present utility model.

Fig. 4 is a schematic top view of a male die in an embodiment of the utility model.

Fig. 5 is a schematic top view of a female die according to an embodiment of the present utility model.

In the figure, 1, an upper template, 101, a discharge screw, 102, a connecting spring, 103, a push pin, 104, an inclined wedge, 2, a male die, 201, a screw, 202, a guide groove, 3, a core block, 301, a spacer bush, 302, a core block spring, 303, a slotted hole, 4, a pressing plate, 5, a female die, 501 and a female die spring.

Detailed Description

In order to make the objects, features and advantages of the present utility model more obvious and understandable, the technical solutions of the present utility model will be clearly and completely described below with reference to the drawings in this specific embodiment, and it is apparent that the embodiments described below are only some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, based on the embodiments in this patent, which would be within the purview of one of ordinary skill in the art without the particular effort to make the utility model are intended to be within the scope of the patent protection.

As shown in fig. 1 to 5, the present embodiment provides a core pulling device of a stamping die, including an upper die plate 1 and a female die 5, where the upper die plate 1 is provided with a male die 2, the upper die plate 1 is connected with the male die 2 through a connecting spring 102 and a discharging screw 101, a pressing plate 4 is connected to the male die 2, the male die 2 is connected with the pressing plate 4 through a screw 201, a plurality of annularly arranged core blocks 3 are provided between the male die 2 and the pressing plate 4, the upper die plate 1 is provided with push pins 103, the push pins 103 are located in the middle of the annularly arranged core blocks 3, and core block springs 302 are provided outside the core blocks 3; the male die 2 is provided with a guide groove 202, the core block 3 is positioned in the guide groove 202 and can slide along the guide groove 202, the movement of the core block 3 on the male die 2 is limited, and the core block moves along a limited direction, so that stable contraction and expansion movement is realized. Specifically, the oblong holes 303 are formed in the core blocks 3, the screws 201 and the spacers 301 are arranged in the oblong holes 303, the movable range of the core blocks 3 is limited by the arrangement of the oblong holes 303, and the core blocks 3 can slide in a certain range stably. Each core block 3 has the same size and shape, each core block 3 is correspondingly provided with a core block spring 302, the plurality of core block springs 302 are annularly arranged, and a circle of core block springs 302 are arranged around the core block 3 to annularly clamp the core block 3.

Wherein, die 5 includes left die 5 and right die 5 that separate was arranged, is connected with die spring 501 between left die 5 and the right die 5, and left die 5 and right die 5 symmetrical arrangement, die spring 501 are located left die 5 and right die 5 opposite one side. The upper die plate 1 is provided with an inclined wedge 104, the inclined wedge 104 is positioned at the outer side of the female die 5, the outer sides of the left female die 5 and the right female die 5 are respectively provided with a corresponding inclined wedge 104, a limiting column is arranged outside the female die 5, the inclined wedge 104 is positioned in a gap between the female die 5 and the limiting column so as to guide the upward and downward movement of the inclined wedge 104, and the left female die 5 and the right female die 5 are limited when being outwards expanded under the action of a female die spring 501. When the inclined wedge 104 moves downwards, the left female die 5 and the right female die 5 are made to move in a centering way, the female die spring 501 is compressed, after stamping is completed, the inclined wedge 104 moves upwards, the female die spring 501 is reset, the left female die 5 and the right female die 5 are made to expand outwards, and the left female die 5 and the right female die 5 are separated.

The working principle is as follows: when the upper template 1 slides downwards, the inclined wedges 104 and the push-up pins 103 are driven to act downwards simultaneously, wherein: 1. the wedges 104 act on the two separated female dies 5 respectively to promote the left female die 5 and the right female die 5 to slide towards the center to form an integral body (female die 5); 2. the push-up pin 103 acts on the core 3 to promote the core 3 to slide outwards; at this time, the die 5 cooperates with the pellet 3 to complete the punching, forming an inwardly necked shape. When the upper die plate 1 is lifted upwards, the core block 3 is contracted towards the center for resetting under the action of the core block spring 302, and the female die 5 is separated towards two sides under the action of the female die spring 501, so that the purpose that after a necking part is formed on a product, the product is smoothly separated from the die is achieved.

The terms "upper," "lower," "outboard," "inboard," and the like in the description and in the claims of the utility model and in the above figures, if any, are used for distinguishing between relative relationships in position and not necessarily for giving qualitative sense. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides a stamping die's core pulling device, including cope match-plate pattern and die, the cope match-plate pattern is provided with the terrace die, be connected with the pressure flitch on the terrace die, its characterized in that is provided with a plurality of core blocks that annular was arranged between terrace die and the pressure flitch, the cope match-plate pattern is provided with the push pin, the push pin is located the core block centre that annular was arranged, the core block is equipped with the core block spring outward, the die is including left die and the right die that separate was arranged, be connected with the die spring between left die and the right die, the cope match-plate pattern is provided with to one side and carves, it is located the die outside to one side to carve to one side, the outside of left die and right die has corresponding to one side to carve.

2. The core pulling device of the stamping die according to claim 1, wherein a limit post is arranged outside the female die, and the inclined wedge is positioned in a gap between the female die and the limit post.

3. The core pulling device of a press die as set forth in claim 1, wherein the male die is provided with a guide groove, and the core block is located in the guide groove and is slidable along the guide groove.

4. A core pulling device of a stamping die according to claim 3, wherein the core block is provided with a slotted hole, and a screw and a spacer are arranged in the slotted hole.

5. The core pulling device of a stamping die as defined in claim 4, wherein each of the core blocks has the same size and shape, each of the core blocks is correspondingly provided with a core block spring, and the plurality of core block springs are annularly arranged.

6. The core pulling apparatus of a press mold according to any one of claims 1 to 5, wherein the upper die plate is provided with a discharge screw, and the upper die plate is connected to the male die by the discharge screw.

7. The core pulling device of a stamping die as defined in claim 6, wherein a connecting spring is provided between the upper die plate and the male die, and the upper die plate is connected to the male die by the connecting spring and the discharge screw.

8. The core pulling device of a stamping die according to any one of claims 1 to 5, wherein the male die is connected to the pressing plate by screws.

9. The core back apparatus of a press mold according to any one of claims 1 to 5, wherein the left die and the right die are symmetrically arranged, and the die springs are located on opposite sides of the left die and the right die.

10. A core back apparatus of a press mold according to any one of claims 1 to 5, wherein the male die is located between the left female die and the right female die.