CN218985633U

CN218985633U - Spring block demoulding mechanism

Info

Publication number: CN218985633U
Application number: CN202223194902.2U
Authority: CN
Inventors: 王洪波; 孙文强; 王纪学; 郭峰; 王焕焕; 刘媛; 马德草; 房立勇
Original assignee: Qingdao Hi Tech Moulds Co ltd
Current assignee: Qingdao Hi Tech Moulds Co ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-05-09
Anticipated expiration: 2032-11-30

Abstract

The utility model discloses a spring block demoulding mechanism which comprises a fixed die plate, a movable die plate, a spring block, a sliding block and a spring, wherein the lower end surface and the right end surface of the spring block are in contact with the sliding block, a spring groove is formed in the sliding block, the spring is positioned in the spring groove and props against the lower end surface of the spring block, the right end of the spring block is in sliding connection with the sliding block, and the upper end surface of the spring block is in contact with the fixed die plate. The utility model has simple and reasonable structure, avoids damage to products caused by direct forced release of the back-off, and is provided with the elastic block for helping the back-off molding, thereby effectively simplifying the structure of the die and reducing the manufacturing cost of the die.

Description

Spring block demoulding mechanism

Technical Field

The utility model relates to the technical field of injection molds, in particular to a spring block demolding mechanism.

Background

The injection molding has the advantages of high production speed and high efficiency, can realize automation in operation, and is suitable for the molding processing fields of mass production, products with complex shapes and the like. When the product is provided with a back-off structure (the back-off means that the product has a structural part of a reverse cladding mold), the product cannot be directly and smoothly demoulded in one direction, if the back-off is directly and strongly released, the conditions such as stretch breaking and the like are easy to occur, and the product is damaged and has high rejection rate.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model provides the elastic block demoulding mechanism which is reasonable in design, overcomes the defects in the prior art and has good effect.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a bullet piece demoulding mechanism, includes fixed die plate and movable die plate, still includes bullet piece, slider and spring, the lower terminal surface and the right-hand member face of bullet piece contact with the slider, the spring groove has been seted up on the slider, the spring is located the spring inslot and supports the bullet piece lower terminal surface, bullet piece right-hand member and slider sliding connection, bullet piece up end contacts with the fixed die plate.

Further, a vertical inclined guide rail is arranged on the sliding block, and the right end of the elastic block is in sliding connection with the sliding block through the guide rail.

Further, the right end of the sliding block is fixedly connected with the oil cylinder.

Further, the device also comprises a drag hook and a pulling block, wherein the drag hook is fixed on the fixed template, and the pulling block is fixed on the elastic block.

Further, the bottom end of the spring block is connected with the sliding block through a limiting screw, and the spring is sleeved on the limiting screw.

The utility model has the beneficial technical effects that:

the utility model has simple and reasonable structure, avoids damage to products caused by direct forced release of the back-off, and is provided with the elastic block for helping the back-off molding, thereby effectively simplifying the structure of the die and reducing the manufacturing cost of the die.

Drawings

FIG. 1 is a cross-sectional view of a product of the present utility model;

FIG. 2 is a schematic view of the structure of the ejector block stripping mechanism and the product of the present utility model;

FIG. 3 is a schematic view of a slider according to the present utility model;

FIG. 4 is a cross-sectional view of a spring and slider of the present utility model;

FIG. 5 is a schematic view of the structure of the spring block, the drag hook and the pull block according to the present utility model;

FIG. 6 is an enlarged view of portion A of FIG. 5;

wherein, 1-product; 2-tendons; 3-a back-off structure; 4-spring blocks; 5-a slider; 6-a spring; 7, a guide rail; 8-an oil cylinder; 9-spring grooves; 10-drag hook; 11-pulling blocks; 12-limiting screws;

Detailed Description

The following description of the embodiments of the utility model will be given with reference to the accompanying drawings and examples:

a spring block demoulding mechanism is used for demoulding a product, as shown in figure 1, a rib 2 is arranged on a product 1, and because of the strength requirement, the rib 2 is thicker than a common reinforcing rib, shrink-proof grooves are arranged at the joint of the rib 2 and the product 1, so that shrink marks are prevented on the surface of the injection-molded rib 2, and the shrink-proof grooves form a back-off structure 3. In order to remove the back-off structure 3, a spring block demoulding mechanism is provided, as shown in fig. 2, the mechanism comprises a fixed template and a movable template, an injection molding cavity is arranged between the fixed template and the movable template, the injection molding cavity is provided with a spring block 4, a sliding block 5 and a spring 6, the lower end surface and the right end surface of the spring block 4 are in contact with the sliding block 5, as shown in fig. 3, a vertical inclined guide rail 7 is arranged on the sliding block 5, the right end surface of the spring block 4 is in sliding connection with the sliding block 5 through the guide rail 7, and the sliding block 5 is fixedly connected with an oil cylinder 8;

as shown in fig. 4, the slide block 5 is provided with a spring groove 9, the spring 6 is located in the spring groove 9 and abuts against the lower end face of the spring block 4, the upper end face of the spring block 4 is in contact with the fixed die plate, before the die is opened, the fixed die plate compresses the spring 6 in the spring groove 9 through the spring block 4, the spring 6 is in a compressed state, after the die is opened, the fixed die plate moves upwards, and the spring 6 can spring the spring block 4.

The spring 6 is prevented from being pressed in the spring groove 9 to cause failure, as shown in fig. 5 and 6, the draw hook 10 and the pull block 11 are arranged, the draw hook 10 is fixed on the fixed die plate, the pull block 11 is fixed on the elastic block 4, and when the fixed die plate moves upwards, the draw hook 10 pulls out the elastic block 4 for a certain distance through the pull block 11, so that the spring 6 can smoothly eject the elastic block 4. The draw hook 10 and the pull block 11 are mutually matched, when the draw hook 10 pulls out the elastic block 4 by 1-2mm through the pull block 11, the draw hook 10 and the pull block 11 are separated, and the draw hook 10 moves upwards along with the fixed die plate.

The bottom of the spring block 4 is connected with the sliding block 5 through a limiting screw 12, the limiting screw 12 plays a limiting role on the spring block 4, the spring block 4 is prevented from being separated from the sliding block 5, and the spring 6 is sleeved on the limiting screw 12.

The working process of the mechanism is as follows: after injection molding is completed, the mold is opened, the fixed mold plate moves upwards, after the drag hook 10 pulls the elastic block 4 upwards by 1-2mm through the pull block 11, the drag hook 10 is separated from the pull block 11, and the elastic block 4 moves obliquely upwards along the guide rail 7 under the action of the spring 6, so that the reverse buckling structure 3 is separated, and the oil cylinder 8 drives the sliding block 5 to drive the elastic block 4 to separate from the product 1 together.

In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, and are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

It should be understood that the above description is not intended to limit the utility model to the particular embodiments disclosed, but to limit the utility model to the particular embodiments disclosed, and that the utility model is not limited to the particular embodiments disclosed, but is intended to cover modifications, adaptations, additions and alternatives falling within the spirit and scope of the utility model.

Claims

1. The utility model provides a bullet piece demoulding mechanism, includes fixed die plate and movable die plate, its characterized in that still includes bullet piece, slider and spring, the lower terminal surface and the right-hand member face of bullet piece contact with the slider, the spring groove has been seted up on the slider, the spring is located the spring inslot and supports the bullet piece lower terminal surface, bullet piece right-hand member and slider sliding connection, bullet piece up end contacts with the fixed die plate.

2. The spring block demolding mechanism according to claim 1, wherein the sliding block is provided with a vertical inclined guide rail, and the right end of the spring block is slidably connected with the sliding block through the guide rail.

3. The spring block demolding mechanism according to claim 1, wherein the right end of the sliding block is fixedly connected with the oil cylinder.

4. The spring block stripping mechanism as recited in claim 1, further comprising a drag hook secured to the stationary platen and a pull block secured to the spring block.

5. The spring block demolding mechanism according to claim 1, wherein the bottom end of the spring block is connected with the sliding block through a limiting screw, and the spring is sleeved on the limiting screw.