CN110756666A - Product ejector of forming die - Google Patents

Abstract

The invention relates to a product ejector of a forming die, which comprises an upper female die and a lower male die which are oppositely arranged, wherein the lower male die is fixed on a base, the upper female die is connected with a press, and the ejector comprises a limiting block fixed on the base, a guide rod and an ejection spring which are arranged on the limiting block, and an ejection block arranged at the upper end of the guide rod; the limiting block is provided with a through hole for the guide rod to extend out, and the through hole is matched with the cross section of the guide rod in shape; the ejection spring is arranged between the ejection block and the limiting block; and a through hole for the ejection block to extend out is formed in the cavity surface of the lower male die. Compared with the prior art, the invention has the advantages of convenient use, high product yield and the like.

Description

Product ejector of forming die

Technical Field

The invention relates to the technical field of mold processing, in particular to a product ejector of a forming mold.

Background

After a hard material product die is formed and punched, a product is left on a male die (under general conditions, the die is designed to be concave-upper and convex-lower), the product needs to be taken off from the male die, the most original method is to take the product out by a tool manually, and then the product is ejected by a method of adding an air cylinder at the bottom of the male die, so that the product is convenient to take out manually. The method for taking out the product by using the tool manually has the disadvantages of large batch production period, serious product deformation and low yield because of time waste, and is basically eliminated at present. The method for ejecting the product by adding the air cylinder at the bottom of the male die is continuously used, is convenient and quick, is always recognized by people, and can smoothly eject the product by connecting the air cylinder if the air cylinder is added, but the air cylinder is not added. Occasionally, the condition needs to be checked and solved one by one, and a great deal of time is wasted. The cylinder is required to be controlled independently when the cylinder is ejected out, the manual control of the cylinder increases labor cost, and the automatic control of the cylinder by the controller also requires the addition of equipment such as a controller and the like; generally, in order to keep the product ejected, several air cylinders need to be arranged, the ejection speeds of the air cylinders need to be kept consistent, and otherwise, the product can be inclined.

Disclosure of Invention

The invention aims to provide a product ejector of a forming die to overcome the defects of inconvenient operation and poor ejection effect in the prior art.

The purpose of the invention can be realized by the following technical scheme:

a product ejector of a forming die comprises an upper female die and a lower male die which are oppositely arranged, wherein the lower male die is fixed on a base, the upper female die is connected with a press, and the ejector comprises a limiting block fixed on the base, a guide rod and an ejection spring which are arranged on the limiting block, and an ejection block arranged at the upper end of the guide rod; the limiting block is provided with a through hole for the guide rod to extend out, and the through hole is matched with the cross section of the guide rod in shape; the ejection spring is arranged between the ejection block and the limiting block; and a through hole for the ejection block to extend out is formed in the cavity surface of the lower male die.

And when the upper female die and the lower male die are closed, the shape of the integral cavity surface formed by the cavity surfaces of the ejection block and the lower male die is consistent with the shape of the back surface of the product.

The base is provided with a plurality of liftout devices which are dispersedly arranged on the top surface outline of the product.

The top surface profile of product is the rectangle structure, be equipped with four liftout wares on the base, wherein two liftout wares are located the intermediate position of two minor faces of rectangle structure, and two other liftout wares scatter and arrange in one of them long edge of rectangle structure.

The lower end of the guide rod is connected with a limiting nut which is connected with the limiting block in a limiting way.

The product is made of hard materials.

The ejection block is fixedly connected with the guide rod through a screw.

The limiting block is fixed on the base through four screws.

The working process of the invention is as follows:

before the mold is closed, an ejection block of the ejector is in an ejection state under the action of an ejection spring, and the upper end part of the guide rod and the ejection block are both higher than the cavity surface of the lower punch; a product to be processed is placed on the ejection block, then the press descends to drive the upper female die to move downwards, the ejection block drives the guide rod to move downwards by utilizing the pressure of the cavity surface of the upper female die to the product and the ejection block, meanwhile, the lower surface of the ejection block presses down the spring to compress and deform the spring until the die assembly is finished, the spring is kept in a compressed state, and when the die assembly is finished, the upper surface of the ejection block and the cavity surface of the lower male die just form an integral cavity surface which is consistent with the shape of the product, so that the processing quality of the product is ensured;

then, opening the die, wherein in the die opening process, the press drives the upper female die to move upwards, the spring rebounds to drive the ejection block to move upwards, so that the product is ejected out, the product is convenient to take, and the upper surface of the product still contacts with the cavity surface of the upper female die, so that the product ejection process can be kept horizontal strictly, and the product quality is ensured; in addition, in the processes of die assembly and die opening, the shapes of the through holes of the guide rod and the limiting block are matched, so that the moving directions of the guide rod and the ejection block are strictly vertical to each other, and the ejection quality is favorably ensured.

The product of the invention is especially suitable for hard material product dies, and the die with long manufacturing period is designed.

Compared with the prior art, the invention has the following advantages:

(1) according to the invention, through the linkage action of the ejection spring, the ejection spring and the upper female die, the product is ejected in a linkage state, the production period is shortened, the product can be ejected without manual operation, and the operation is convenient;

(2) the invention does not need an external control system or other power systems, has simple structure and is easy to control;

(3) the product is ejected out along with the upper female die, the product is not easy to deform, and the yield is ensured.

Drawings

FIG. 1 is a schematic view of an assembly structure of the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic view of an assembly structure of an ejection mechanism in the prior art;

FIG. 4 is a schematic diagram of a prior art ejection mechanism;

in the figure, 1 is an ejection block, 2 is a guide rod, 3 is a limit block, 4 is an ejection spring, 5 is a limit nut, 6 is a connecting rod, 7 is a cylinder, 8 is a lower punch and 9 is a product.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.

Examples

A product ejector of a forming die is shown in figure 1 and is installed on a lower male die 8 of a stamping die, wherein the stamping die comprises an upper female die and a lower male die 8 which are oppositely arranged, the lower male die 8 is fixed on a base, the upper female die is connected with a press, and the ejector is installed on the base of the lower male die 8.

As shown in fig. 2, the ejector comprises a limiting block 3, a guide rod 2, an ejection spring 4 and an ejection block 1; the limiting block 3 is fixed on the base, a through hole for the guide rod 2 to extend out is formed in the limiting block 3, the through hole is matched with the cross section shape of the guide rod 2, the guide rod 2 can move up and down along the through hole, the lower end of the guide rod 2 is connected with a limiting nut 5 in limiting connection with the limiting block 3, the lower end portion of the guide rod 2 cannot be located on the upper portion of the limiting block 3 under the action of the ejection spring 4 through the limiting nut 5, and the guide rod 2 is guaranteed to move up and down in the through hole of the limiting block 3; the ejection block 1 is fixed at the upper end of the guide rod 2, and the ejection spring 4 is wound outside the guide rod 2 and is arranged between the ejection block 1 and the limiting block 3; and a through hole for the ejection block 1 to extend out is formed in the cavity surface of the lower male die 8, and when the upper female die and the lower male die 8 are closed, the shape of an integral cavity surface formed by the ejection block 1 and the cavity surface of the lower male die 8 is consistent with the shape of the back surface of the product 9. The ejection block 1 is fixedly connected with the guide rod 2 through screws, and the limiting block 3 is fixed on the base through four screws.

As shown in fig. 1, the top surface of the product 9 has a rectangular profile, and four lifters are disposed on the base, two of the lifters are located in the middle of two short sides of the rectangular profile, and the other two lifters are disposed on one long side of the rectangular profile in a dispersed manner.

The device of this embodiment is particularly suitable for ejecting products made of hard materials.

The working principle of the ejector of the embodiment is as follows:

before the die is closed, the ejection block 1 of the ejector is in an ejection state under the action of the ejection spring 4, and the upper end part of the guide rod 2 and the ejection block are both higher than the cavity surface of the lower die 8; a product 9 to be processed is placed on the ejection block, then the press descends to drive the upper female die to move downwards, the ejection block drives the guide rod 2 to move downwards by utilizing the pressure of the cavity surface of the upper female die to the product 9 and the ejection block 1, meanwhile, the lower surface of the ejection block 1 presses down to eject the ejection spring 4, the ejection spring is compressed and deformed until the die assembly is finished, the ejection spring 4 is kept in a compressed state, and when the die assembly is finished, the upper surface of the ejection block 1 and the cavity surface of the lower female die 8 just form an integral cavity surface consistent with the shape of the product, so that the processing quality of the product is ensured;

then, opening the die, wherein in the die opening process, the upper female die is driven by the press to move upwards, the ejection spring 4 rebounds to drive the ejection block 1 to move upwards, so that the product 9 is ejected out, the taking of the product is convenient, and the upper surface of the product 9 still contacts with the cavity surface of the upper female die, so that the ejection process of the product 9 can be strictly kept horizontal, and the quality of the product 9 is ensured; in addition, in the processes of die assembly and die opening, the shapes of the through holes of the guide rod and the limiting block are matched, so that the moving directions of the guide rod and the ejection block are strictly vertical to each other, and the ejection quality is favorably ensured.

The ejector of this embodiment makes the product ejecting under the linkage state, shortens production cycle to the product is ejecting along with the die, and product non-deformable guarantees the yields.

Comparative example

A comparative example is an ejection mechanism of the prior art for ejecting a product by means of an air cylinder, which is mounted on a lower die 8 of a press die, as shown in fig. 3.

As shown in fig. 4, the ejection mechanism comprises an ejection block 1, a connecting rod 8 and a cylinder 7, an output shaft of the cylinder 7 drives the connecting rod 8 to move up and down so as to drive the ejection block 1 to move up and down, and the ejection block 1 ejects a product 9.

The cylinder of the ejection mechanism needs to be controlled by an independent controller or manually, and the product 9 can be ejected smoothly only under the condition of ideal air pressure of the cylinder, so that the situation is solved by checking one by one, and a large amount of time is wasted; and as shown in fig. 3, the four cylinders need to move simultaneously, the action of the four cylinders needs to be kept consistent, the use is inconvenient, and if the action deviation of the four cylinders is large, the product can be obliquely ejected, which is not beneficial to the quality of the product.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.

Claims (8)

1. A product ejector of a forming die comprises an upper female die and a lower male die (8) which are oppositely arranged, the lower male die (8) is fixed on a base, the upper female die is connected with a press, and the product ejector is characterized in that,

the ejector comprises a limiting block (3) fixed on the base, a guide rod (2) and an ejection spring (4) which are arranged on the limiting block (3), and an ejection block (1) arranged at the upper end of the guide rod (2); a through hole for the guide rod (2) to extend out is formed in the limiting block (3), and the through hole is matched with the cross section of the guide rod (2); the ejection spring (4) is arranged between the ejection block (1) and the limiting block (3); and a through hole for the ejection block (1) to extend out is formed in the cavity surface of the lower male die (8).

2. The product ejector of the forming die according to claim 1, wherein when the upper female die and the lower male die (8) are closed, the cavity surface of the ejector block (1) and the cavity surface of the lower male die (8) form an integral cavity surface which is consistent with the shape of the back surface of the product.

3. The product ejector for the forming die as claimed in claim 1, wherein the base is provided with a plurality of ejectors, and the ejectors are distributed at the top surface contour of the product.

4. The ejector for the molding die according to claim 3, wherein the product has a rectangular top profile, and the base has four ejectors, two of the ejectors are located at the middle of two short sides of the rectangular structure, and the other two ejectors are distributed on one of the long sides of the rectangular structure.

5. The product ejector of the forming die is characterized in that the lower end of the guide rod (2) is connected with a limit nut (5) in limit connection with the limit block (3).

6. The product ejector for a molding die as set forth in claim 1, wherein the product is a product made of a hard material.

7. The ejector for molding dies according to claim 1, wherein the ejector block (1) and the guide rod (2) are fixedly connected by screws.

8. The ejector for molding dies according to claim 1, wherein the stopper (3) is fixed to the base by four screws.

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