CN217251974U

CN217251974U - Spring ejection mechanism of blanking die

Info

Publication number: CN217251974U
Application number: CN202121946813.1U
Authority: CN
Inventors: 谢周清; 林建生; 陈景
Original assignee: Fujian Fuyao Automotive Trim System Co ltd
Current assignee: Fujian Fuyao Automotive Trim System Co ltd
Priority date: 2021-08-18
Filing date: 2021-08-18
Publication date: 2022-08-23
Anticipated expiration: 2031-08-18

Abstract

The utility model discloses a spring ejection mechanism of blanking die, which is arranged in a movable die, wherein the movable die is arranged relative to a lower die plate of a fixed die, the movable die comprises an upper punching cutting plate, a lower stripper plate and an upper stripper plate which can slide up and down in a cavity of the upper punching cutting plate, and the movable die comprises a support plate and a plurality of ejector rods which pass through the upper punching cutting plate; the upper stripper plate and the ejector rods are arranged on one side, facing the lower stripper plate, of the supporting plate; when the ejector rod is pressed on the lower stripper plate, a space is formed between the upper stripper plate and the lower template, and the space is at least twice of the thickness of the material sheet. The utility model discloses a space of stepping down is formed to the ejector pin between last flitch and the lower bolster for produce the extrusion to the product and make the product pressed white when avoiding die-cut, improve product quality.

Description

Spring ejection mechanism of blanking die

Technical Field

The utility model belongs to the technical field of the mould and specifically relates to indicate a spring ejection mechanism of blanking die.

Background

The existing composite blanking die is used for stamping materials by an upper stripper plate to realize blanking. But the upper stripper plate of the existing composite blanking die can directly extrude a product in the stamping process, so that the product is pressed to be white, and the yield of the product is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the utility model provides a spring-ejecting mechanism of blanking die, on the prerequisite of guaranteeing to go up the flitch and can make the product take off the material, improve the yield of product.

In order to solve the technical problem, the utility model discloses a technical scheme be:

the ejection mechanism of the blanking die is arranged in a moving die, the moving die comprises an upper punching cutting plate, a lower stripper plate and an upper stripper plate capable of sliding up and down in a cavity of the upper punching cutting plate, and the ejection mechanism comprises a support plate and a plurality of ejector rods penetrating through the upper punching cutting plate;

the upper stripper plate and the ejector rods are arranged on one side, facing the lower stripper plate, of the supporting plate;

when the ejector rod is pressed on the lower stripper plate, a space is formed between the upper stripper plate and the lower template, and the space is at least twice of the thickness of the material sheet.

Furthermore, a plurality of ejector rods are uniformly distributed and arranged around the outer side of the upper stripper plate.

Furthermore, four ejector rods are arranged, and the four ejector rods are symmetrically arranged in a group formed by two ejector rods.

Further, the ejector rod can be slidably inserted into the guide hole of the upper punching plate.

Further, the upper stripper plate is connected with the support plate.

Further, the pitch is twice the web thickness.

Further, the device also comprises a driving mechanism;

the output end of the driving mechanism is pressed against one side, far away from the lower stripper plate, of the supporting plate and is used for driving the upper stripper plate to move downwards and stripping the product.

Furthermore, the bottom of the lower stripper plate is provided with a plurality of reset springs so that the lower stripper plate can movably abut against the fixed die.

Further, a plurality of the return springs are uniformly distributed.

The beneficial effects of the utility model reside in that: set up ejector pin and backup pad for form the interval between the flitch at last taking off the flitch and taking off the flitch down, and go up take off the flitch and take off the interval that will remain at least for tablet thickness twice down between the flitch, for the die-cut space of stepping down that provides of product, avoid going up taking off flitch and lower bolster extrusion product, and then ensured the quality of product, improve the product yield.

Drawings

Fig. 1 is a schematic structural view of a spring ejecting mechanism of a blanking die of the present invention;

fig. 2 is a cross-sectional view of a spring ejecting mechanism of a blanking die according to the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

fig. 4 is an exploded view of the ejection mechanism of the blanking die of the present invention.

Description of reference numerals:

1. moving the mold; 11. punching a cutting plate; 12. a lower stripper plate; 13. an upper stripper plate; 111. a cavity; 112. a guide hole;

2. fixing a mold; 21. a lower template; 22. a seat plate;

3. a support plate; 4. a top rod; 5. a web.

Detailed Description

In order to explain the technical contents, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

Referring to fig. 1 to 4, the ejection mechanism of the blanking die is installed in a moving die, and the moving die comprises an upper punching plate, a lower stripper plate and an upper stripper plate capable of sliding up and down in a cavity of the upper punching plate, and comprises a support plate and a plurality of ejector rods penetrating through the upper punching plate;

when the ejector rod abuts against the lower stripper plate, a space is formed between the upper stripper plate and the lower template, and the space is at least twice the thickness of the material sheet.

The utility model discloses a theory of operation lies in:

produce the interval between last flitch and the lower flitch of taking off, for providing the space of stepping down when the product is die-cut, avoid the punching in-process middle and upper flitch and cover half to produce the extrusion to the product, reach the effect that improves product quality.

From the above description, the beneficial effects of the utility model reside in that: set up ejector pin and backup pad for form the interval between the flitch at last taking off the flitch and taking off the flitch down, and go up take off the flitch and take off the interval that will remain at least for tablet thickness twice down between the flitch, for the die-cut space of stepping down that provides of product, avoid going up taking off flitch and lower bolster extrusion product, and then ensured the quality of product, improve the product yield.

According to the description, the ejector rods are uniformly distributed and used for improving the stability between the upper stripper plate and the lower stripper plate, so that the distances among the upper stripper plate and the lower stripper plate are close.

Furthermore, four ejector rods are arranged, and the four ejector rods are symmetrically arranged in a group formed by every two ejector rods.

As can be seen from the description, the four ejector rods are arranged, so that the distances between the upper stripper plate and the lower stripper plate are equal, and the product is further prevented from being extruded everywhere.

Further, the upper stripper plate is connected with the support plate.

From the above description, the upper stripper plate is connected with the support plate for improving the reliability of the transmission.

Further, the pitch is twice the web thickness.

From the above description, when the distance is twice the thickness of the material sheet, when the movable die and the fixed die are separated, the stroke of the upper stripper plate can just eject the product, and the product is ensured not to be extruded in the punching process.

Further, the device also comprises a driving mechanism;

According to the above description, the driving mechanism is arranged for pushing the upper stripper plate to rapidly push out the product after the movable die is separated from the fixed die, so that the stripping efficiency is improved.

Further, a plurality of the return springs are uniformly distributed.

As can be seen from the above description, the return spring is provided to push the lower stripper plate to return when the pressure of the upper punch plate on the lower stripper plate is removed, so as to perform the next punching.

Example one

Referring to fig. 1-3, the ejection mechanism of the blanking die is installed in a moving die 1, the moving die 1 is arranged relative to a lower die plate 21 of a fixed die 2, the moving die 1 comprises an upper punching plate 11, a lower stripper plate 12 and an upper stripper plate 13 capable of sliding up and down in a cavity 111 of the upper punching plate 11, and comprises a support plate 3 and a plurality of ejector rods 4 penetrating through the upper punching plate 11; the upper stripper plate 13 and the plurality of ejector rods 4 are arranged on one side of the support plate 3 facing the lower stripper plate 12; when the ejector rod 4 is pressed against the lower stripper plate 12, the upper stripper plate 13 and the lower die plate 21 have a spacing a therebetween, and the spacing a is at least twice the thickness of the material sheet 5. Specifically, the blanking die comprises a moving die 1 and a fixed die 2, one side of the fixed die 2, which faces the moving die 1, is provided with a lower die plate 21 which can be embedded into the cavity 111 and is matched with the cavity 111, and the lower stripper plate 12 is arranged on the fixed die 2 in a manner of sliding relative to the upper stripper plate 13; wherein the lower stripper plate 12 is flush with the top of the lower die plate 21 in the initial position.

Example two

Referring to fig. 4, in the ejection mechanism of the blanking die, on the basis of the first embodiment, a plurality of ejector rods 4 are uniformly distributed around the outer side of the upper stripper plate 13.

Referring to fig. 4, four ejector rods 4 are provided, and the four ejector rods 4 are symmetrically arranged in pairs as a group.

Referring to fig. 4, the ejector pin 4 is slidably inserted into the guide hole 112 of the upper cutting plate 11.

Referring to fig. 2, the upper stripper plate 13 is connected to the support plate 3.

Preferably, the pitch a is twice the thickness of the web 5.

Wherein, also include the driving mechanism; the output end of the driving mechanism is pressed against one side of the supporting plate 3 far away from the lower stripper plate 12, and is used for driving the upper stripper plate 13 to move downwards and stripping the product. Wherein the driving mechanism is a hydraulic cylinder.

Wherein, the bottom of the lower stripper plate 12 is provided with a plurality of reset springs, so that the lower stripper plate 12 can movably support against the fixed die 2. The plurality of return springs are uniformly distributed between the lower stripper plate 12 and the seat plate 22 of the fixed die 2 and used for pushing the lower stripper plate 12 to return upwards.

The utility model discloses a working process as follows: after the movable die 1 and the fixed die 2 are assembled, the material sheet 5 is clamped between the upper die plate 11 and the lower stripper plate 12, the material sheet 5 is driven to move towards the lower die plate 21 of the fixed die 2, the material sheet 5 is pressed into the die cavity 111 by the lower die plate 21 to complete die cutting, the stroke of the lower die plate 21 in the die cavity 111 is not larger than the thickness of the material sheet 5, after the die cutting is completed, the upper die plate 11 moves towards one side far away from the lower die plate 21, the upper die plate 11 and the ejector rod 4 are both separated from the lower stripper plate 12, and the upper stripper plate 13 moves towards one side where the lower die plate 21 is located and ejects a product.

To sum up, the utility model provides a pair of ejection of compact mechanism of blanking die drives many ejector pins through setting up the backup pad and supports simultaneously to press on taking off the flitch under to form the interval at last between taking off flitch and the lower bolster, be used for avoiding the lower bolster to push the product when dashing into the die cavity, and then avoid the product to be pressed whitely, improve product quality.

The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.

Claims

1. The ejection mechanism of the blanking die is arranged in a movable die, the movable die is arranged relative to a lower die plate of a fixed die, the movable die comprises an upper punching plate, a lower stripper plate and an upper stripper plate capable of sliding up and down in a cavity of the upper punching plate, and the ejection mechanism is characterized by comprising a support plate and a plurality of ejector rods penetrating through the upper punching plate;

2. The ejector mechanism of claim 1, wherein a plurality of said ejector pins are disposed around the outer side of said upper stripper plate in a uniformly distributed manner.

3. The ejection mechanism of the blanking die as claimed in claim 1 or 2, wherein four ejector rods are provided, and the four ejector rods are symmetrically arranged in pairs as a group.

4. The ejector mechanism of a blanking die of claim 1, wherein the ejector pin is slidably inserted into the guide hole of the upper punch plate.

5. The ejector mechanism of a blanking die as set forth in claim 1, wherein said upper stripper plate is connected to said support plate.

6. The ejector mechanism of claim 1, wherein said pitch is twice the thickness of the web.

7. The ejector mechanism of a blanking die of claim 1, further comprising a drive mechanism;

the output end of the driving mechanism is pressed against one side, away from the lower stripper plate, of the supporting plate and used for driving the upper stripper plate to move downwards and stripping the product.

8. The ejector mechanism of a blanking die as recited in claim 1, wherein the lower stripper plate is provided at a bottom thereof with a plurality of return springs to movably press the lower stripper plate against the stationary die.

9. The ejector mechanism of claim 8, wherein a plurality of said return springs are uniformly distributed.