CN113680916A

CN113680916A - Stripper plate delay mechanism controlled by cylinder

Info

Publication number: CN113680916A
Application number: CN202110875065.0A
Authority: CN
Inventors: 颜龙飞; 张洪
Original assignee: Wuxi Vt Industrial Technology Co ltd
Current assignee: Wuxi Vt Industrial Technology Co ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2021-11-23
Anticipated expiration: 2041-07-30
Also published as: CN113680916B

Abstract

The invention provides a stripper plate delay mechanism controlled by a cylinder, which can solve the technical problem that parts deform during die opening due to the fact that a stripper plate and a blank holder exist simultaneously in a die. The utility model provides a take off flitch delay mechanism by cylinder control which characterized in that, this mechanism includes presses material piece, slider and cylinder, presses the material piece to install under the flitch that takes off of mould, and the cylinder is installed on the blank holder and its output end connects the slider, and the cylinder stretches out the slider back, slider and pressing the material piece butt and push down the blank holder. When the stripper plate moves upwards, the pressing block and the stripper plate synchronously move upwards to remove the press-fitting effect on the slide block and the blank holder, so that the moving part of the lower die can move upwards in a delayed manner, and the problem of upward bending and deformation of the material sheet can be avoided.

Description

Stripper plate delay mechanism controlled by cylinder

Technical Field

The invention relates to the technical field of dies, in particular to a stripper plate delay mechanism controlled by a cylinder.

Background

The moving part of the upper die is generally a stripper plate which is used for pressing materials before die assembly and pushing the part down to be separated from the related forming part of the upper die after die opening, the moving part of the lower die is generally a blank holder or a floating plate, the blank holder is similar to the stripper plate in function and used for pressing materials before die assembly, and the floating plate is used for pushing the part up to be separated from the related forming part of the lower die after die opening. In some cases, if the part to be machined is still in a material pressing state, the movable member of the lower die pushes up the part once moving upwards, so that the part is deformed. For example, when the upper die is provided with a stripper plate and the lower die is provided with a binder ring, the stripping plate and a lower die fixing part, such as a forming block, are matched for material pressing, but the binder ring pushes the part upwards under the action of a nitrogen spring, so that the part is deformed.

Disclosure of Invention

Aiming at the problems, the invention provides a stripper plate delay mechanism controlled by a cylinder, which can solve the technical problem that parts deform during die opening due to the existence of the stripper plate and a blank holder simultaneously.

The technical scheme is that the material removing plate delay mechanism controlled by the air cylinder is characterized by comprising a material pressing block, a sliding block and an air cylinder, wherein the material pressing block is arranged below a material removing plate of an upper die, the air cylinder is arranged on a blank holder, the output end of the air cylinder is connected with the sliding block, and after the sliding block is extended out by the air cylinder, the sliding block is abutted to the material pressing block and presses the blank holder.

Furthermore, the mechanisms are respectively arranged between the stripper plate and each movable block of the lower die.

Furthermore, the movable blocks of the lower die are blank holders, the blank holders are respectively arranged on the lower die in the circumferential direction of the part to be processed, and the mechanisms are respectively arranged between the stripper plate and each blank holder.

Furthermore, the blank holder is provided with balance blocks respectively positioned at the front side and the rear side of each time delay unit, the upper die is provided with heightening blocks which are in one-to-one correspondence with the balance blocks, and the heightening blocks are abutted against the balance blocks and press the blank holder when the dies are closed.

Furthermore, the stripper plate is arranged below the upper die base through an upper die nitrogen spring, the blank holder is arranged on the lower die base through a lower die nitrogen spring, and the lower die base is provided with a dead block matched with the blank holder.

Furthermore, a first copper block is installed on the upper portion of the sliding block and matched with the material pressing block through an inclined plane.

Furthermore, the blank holder is located the slider both sides are equipped with guide pressure plate respectively, the blank holder is located the slider bottom is equipped with the second copper billet.

According to the stripper plate delay mechanism, after the die is closed, the cylinder drives the sliding block to move forwards to a position below the pressing block, and the sliding block is abutted against the pressing block and assists in pressing a moving part of a lower die; after the mold is opened, under the condition that the stripper plate does not move upwards, the position of the pressing block is kept unchanged, the pressing block is matched with the sliding block to keep the state of pressing the moving part of the lower mold, when the stripper plate moves upwards, the pressing block and the stripper plate move upwards synchronously, the pressing effect on the sliding block and the blank holder is removed, the moving part of the lower mold can move upwards in a delayed mode, and the problems of upward bending and deformation of the material sheet cannot occur.

Drawings

FIG. 1 is a schematic cross-sectional view of a first perspective of the present invention.

FIG. 2 is a schematic cross-sectional view of a second perspective of the present invention.

Detailed Description

As shown in fig. 1 and 2, in the embodiment of the stripper plate delay mechanism controlled by the cylinder, moving parts of a lower die are blank holders, the mechanism is arranged between each blank holder and the stripper plate, the stripper plate 4 is installed below an upper die base 1 through an upper die nitrogen spring 2 and an upper die nitrogen ejector block 3, the blank holder 5 is installed on a lower die base 7 through a lower die nitrogen spring 6 and a lower die nitrogen ejector block, and the lower die base 7 is provided with a striking block matched with the blank holder 5. The mechanism comprises a material pressing block 11, a sliding block 13 and an air cylinder 18, wherein the material pressing block 11 is arranged below a stripper plate 4 of an upper die, the air cylinder 18 is arranged on a blank holder 5 through a support and the output end of the air cylinder is connected with the sliding block 13, a first copper block 12 is arranged on the upper portion of the sliding block 13 and matched with the material pressing block 11 through an inclined plane, the inclined plane is arranged to facilitate the first copper block 12 to be inserted below the material pressing block 11, guide pressing plates 14 are respectively arranged on two sides of the sliding block 13 of the blank holder 5, a second copper block 15 is arranged at the bottom of the sliding block 13 of the blank holder 5, the first copper block 12 and the second copper block 15 are respectively used for reducing friction, and after the sliding block 13 is extended out by the air cylinder 18, the sliding block 13 is abutted to the material pressing block 11 and presses the blank holder 5;

the blank holder 5 is located the front and back both sides of each time delay unit and is equipped with balancing piece 17 respectively, goes up the mould and is equipped with the mould bed hedgehopping piece 16 with balancing piece 17 one-to-one, and during the compound die, goes up mould bed hedgehopping piece 16 and balancing piece 17 butt and push down blank holder 5, guarantees the equilibrium of blank holder, makes its atress even.

In the figure, 9 is a stripper plate insert installed below the stripper plate 4, 8 is a forming block installed on the lower die base 7 through a lower die bed block, the stripper plate insert 9 and the forming block 8 are matched for pressing, and 10 is a blank holder insert installed on the blank holder 5.

In addition, a blank holder sensor is installed on the lower die base, a sliding block sensor is installed on the blank holder, the blank holder sensor, the lower die sliding block sensor and a servo valve of the air cylinder are respectively in electric control connection with a controller, and the positions of the blank holder and the sliding block are monitored through the sensors to feed back the controller to give a working signal of the air cylinder.

Claims

1. The utility model provides a take off flitch delay mechanism by cylinder control which characterized in that, this mechanism includes presses briquetting, slider and cylinder, press briquetting to install under the flitch that takes off of mould, the cylinder is installed on the blank holder and its output connects the slider, the cylinder will the slider stretches out the back, the slider with press briquetting butt and push down the blank holder.

2. The stripper plate delay mechanism controlled by a cylinder as claimed in claim 1, wherein said mechanism is provided between each movable block of the stripper plate and the lower die, respectively.

3. The material releasing plate delay mechanism controlled by the air cylinder as claimed in claim 2, wherein the movable blocks of the lower mold are blank holders, the blank holders are respectively arranged on the lower mold in the circumferential direction of the part to be processed, and the mechanism is respectively arranged between the material releasing plate and each blank holder.

4. The material releasing plate delay mechanism controlled by the air cylinder as claimed in claim 3, wherein the blank holder is provided with balance blocks respectively at the front and back sides of each delay unit, the upper die is provided with block-up blocks corresponding to the balance blocks one by one, and when the dies are closed, the block-up blocks abut against the balance blocks and press the blank holder.

5. The cylinder-controlled stripper plate delay mechanism of claim 3 wherein the stripper plate is mounted under an upper die holder by an upper die nitrogen spring, the blankholder is mounted on a lower die holder by a lower die nitrogen spring, and the lower die holder is provided with a deadening block cooperating with the blankholder.

6. The material releasing plate delay mechanism controlled by the air cylinder as claimed in claim 3, wherein a first copper block is mounted on the upper part of the sliding block, and the first copper block is matched with the material pressing block through an inclined surface.

7. The material releasing plate delay mechanism controlled by the air cylinder as claimed in claim 6, wherein the blank holder is provided with a guiding pressing plate on both sides of the sliding block, and a second copper block is provided on the bottom of the blank holder on the sliding block.