CN221476018U - Inclined-plane type sliding block side pumping mechanism for injection mold - Google Patents

Abstract

The utility model discloses an inclined-plane sliding block side-drawing mechanism for an injection mold, which is characterized in that: the sliding block side pumping mechanism comprises a large sliding block which is slidably connected in a movable die part, a small sliding block cavity and a large inclined guide groove are formed in the large sliding block, a small sliding block is slidably connected in the small sliding block cavity, a small inclined guide groove is formed in the small sliding block, an inclined guide pillar is arranged on the small sliding block and matched with the small inclined guide groove, the top end of the inclined guide pillar is fixedly connected with a fixed die part, meanwhile, the inclined guide pillar is movably connected in the large inclined guide groove, the width of the large inclined guide groove is larger than that of the small inclined guide groove, a protruding part is connected on one side, close to a die cavity, of the small sliding block, an inclined driving surface is arranged on the protruding part, an inverted buckle insert is slidably connected on the upper surface of the inclined driving surface through a dovetail groove, and the moving direction of the inverted buckle insert is mutually perpendicular to the moving direction of the small sliding block.

Description

Inclined-plane type sliding block side pumping mechanism for injection mold

Technical Field

The utility model relates to the field of injection molding, in particular to an inclined-plane type sliding block side-drawing mechanism for an injection mold.

Background

Injection molding is a common process for producing plastic products, which utilizes a molding machine to inject materials in a molten state into a cavity of a mold, forms a workpiece matched with the shape of the cavity after the materials are cooled, then opens the mold, and releases the workpiece from the mold to form the workpiece. The injection molding process has been widely used because of its advantages such as low cost, mass production, etc.

Some workpieces are special in shape and structure, a plurality of inserts are needed to be spliced together to form a complete cavity to realize injection molding, and meanwhile, a back-off structure possibly exists on the workpiece, namely, the back-off structure forms a certain included angle with the movement direction of the inserts, and a conventional core pulling mechanism cannot realize core pulling action after the workpiece is molded, so that special side core pulling mechanisms are needed to be designed in a die for injection molding operation of the workpiece with the back-off structure.

The conventional side core pulling mechanism generally needs to be provided with a plurality of independent driving mechanisms to respectively realize the actions of the insert or the slide block in a plurality of directions, so that the overall complexity of the die is increased, and the cost is increased; meanwhile, the actions need to be strictly followed by a certain action sequence and time interval, otherwise, the workpiece is damaged if the actions are light, the product cannot be normally produced, and the core pulling mechanism and even the die are damaged if the actions are heavy, so that great economic loss is caused.

There is thus a need for a method or apparatus that solves the above-mentioned problems.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and provides the inclined-plane type sliding block side drawing mechanism which has the advantages of simple structure, ingenious design and reasonable layout and can quickly and smoothly realize the core pulling operation of a workpiece with a back-off structure.

The technical scheme of the utility model is as follows: an inclined surface type slide block side drawing mechanism for an injection mold is characterized in that: the slide block side pumping mechanism comprises a large slide block 1 which is in sliding connection with a movable mould part, a small slide block cavity 2 and a large inclined guide groove 3 are arranged in the large slide block 1, a small slide block 4 is in sliding connection with the small slide block cavity 2, a small inclined guide groove 5 is arranged on the small slide block 4, an inclined guide pillar 6 is arranged on the small slide block 4 in a matched manner with the small inclined guide groove 5, the top end of the inclined guide pillar 6 is fixedly connected with a fixed mould part, meanwhile, the inclined guide pillar 6 is also in movable connection with the large inclined guide groove 3, the width of the large inclined guide groove 3 is larger than that of the small inclined guide groove 5,

The small slide block 4 is connected with a protruding part 7 on one side close to the cavity, an inclined driving surface 8 is arranged on the protruding part 7, an inverted insert 9 is slidably connected to the upper surface of the inclined driving surface 8 through a dovetail groove, and the movement direction of the inverted insert 9 is mutually perpendicular to the movement direction of the small slide block 4.

Compared with the prior art, the utility model has the following advantages:

The inclined-surface type sliding block side-pulling mechanism for the injection mold has the advantages that the structure is simple, the design is ingenious, the layout is reasonable, when the traditional side-pulling mechanism meets the back-off structure, a plurality of independent driving mechanisms are required to be arranged to respectively drive different inserts to move towards different directions, a special structure is designed, the inclined surface and the dovetail groove are utilized to convert movement in one direction into movement in the direction perpendicular to the direction, that is, a set of conventional driving mechanisms (common inclined guide pillar and inclined guide groove structures) are required to be configured, core pulling actions in two directions can be realized at the same time, further core pulling operation on the back-off structure is realized, the whole structure is quite simple, excessive space is not occupied, and the cost can be effectively controlled on the premise that smooth core pulling actions are ensured. The manufacturing process is simple, and the manufacturing cost is low, so that the novel plastic composite material has various advantages, is particularly suitable for popularization and application in the field, and has very broad market prospect.

Drawings

Fig. 1 is a top view of an embodiment of the present utility model.

Fig. 2 is a front view (cross-section) of an embodiment of the present utility model.

The device comprises a large slide block 1, a small slide block cavity 2, a large inclined guide groove 3, a small slide block 4, a small inclined guide groove 5, an inclined guide pillar 6, a protruding part 7, an inclined driving surface 8 and a back-off insert 9.

Detailed Description

Specific embodiments of the present utility model will be described below with reference to the accompanying drawings. As shown in fig. 1 to 2: the inclined slide block side drawing mechanism for the injection mold comprises a large slide block 1 which is in sliding connection with a movable mold part, a small slide block cavity 2 and a large inclined guide groove 3 are arranged in the large slide block 1, a small slide block 4 is in sliding connection with the small slide block cavity 2, a small inclined guide groove 5 is arranged on the small slide block 4, an inclined guide pillar 6 is arranged on the small slide block 4 in a matched manner with the small inclined guide groove 5, the top end of the inclined guide pillar 6 is fixedly connected with the fixed mold part, meanwhile, the inclined guide pillar 6 is also in movable connection with the large inclined guide groove 3, the width of the large inclined guide groove 3 is larger than that of the small inclined guide groove 5,

The small slide block 4 is connected with a protruding part 7 on one side close to the cavity, an inclined driving surface 8 is arranged on the protruding part 7, an inverted insert 9 is slidably connected to the upper surface of the inclined driving surface 8 through a dovetail groove, and the movement direction of the inverted insert 9 is mutually perpendicular to the movement direction of the small slide block 4.

The working process of the inclined-plane sliding block side-drawing mechanism for the injection mold provided by the embodiment of the utility model is as follows: when the mold is closed, the insert at the front end of the protruding part 7 enters the cavity to form a part of the cavity, and meanwhile, the back-off insert 9 also moves to a preset position to occupy a space and also forms a part of the cavity; after the die is completely closed, the molding machine injects the material in a molten state into the cavity, the material is cooled and molded after filling the cavity, a workpiece which is matched with the shape of the cavity is formed, a hole on the workpiece is formed at the position of the back-off insert 9,

When the die is opened, the movable die part is far away from the fixed die part, the inclined guide post 6 moves relative to the small inclined guide slot 5, the small sliding block 4 is driven to move towards the direction far away from the die cavity under the action of the inclined guide post 6, the front end of the protruding part 7 is pulled out of the die cavity, and in the moving process of the protruding part 7, the inclined driving surface 8 on the top end surface is in sliding connection with the longitudinally distributed back-off insert 9 through the dovetail groove, so that the back-off insert 9 moves downwards under the action of the dovetail groove; in the moving process, the inclined guide post 6 is not in direct contact with the large slide block 1, so that the large slide block 1 is relatively motionless;

When the small slide block 4 moves to be in contact with the side wall at one side of the small slide block cavity 2, the small slide block 4 pushes the large slide block 1 to move towards the direction away from the cavity, the back-off insert 9 is just completely separated from the hole on the workpiece at the moment, and the large slide block 1 drives the protruding part 7 to integrally move, so that core pulling action between the insert and the workpiece is realized;

The designer can design the size of the protruding part 7 and the inclination angle of the inclined driving surface 8 according to the known workpiece parameters such as the stroke of the small sliding block 4 and the large sliding block 1, the depth of the hole and the like, so that when the small sliding block 4 drives the large sliding block 1 to move, the back-off insert 9 just completely falls out of the hole;

when the mold is closed, the movable mold part is close to the fixed mold part, and the bottom of the inclined guide post 6 is contacted with the side wall of the large inclined guide groove 3, so that the large slide block 1 is driven to move towards the direction of the mold cavity, the small slide block 4 is driven to move relative to the large slide block 1, and finally the front end of the protruding part 7 is sent into the mold cavity;

In the process of movement of the protruding part 7, the back-off insert 9 is fed into the cavity, when the back-off insert 9 touches a preset blocking part in the cavity, horizontal movement cannot be continuously carried out along with horizontal movement of the protruding part 7, at the moment, under the action of the inclined driving surface 8 and the dovetail groove, the movement direction of the back-off insert 9 is changed into vertical upward, and thus, in a complete mold closing state, the insert at the front end of the protruding part 7 and the back-off insert 9 move in place and wait for the next injection molding operation.

Claims (1)

1. An inclined surface type slide block side drawing mechanism for an injection mold is characterized in that: the slide block side pumping mechanism comprises a large slide block (1) which is slidably connected in a movable mould part, a small slide block cavity (2) and a large inclined guide groove (3) are formed in the large slide block (1), a small slide block (4) is slidably connected in the small slide block cavity (2), a small inclined guide groove (5) is formed in the small slide block (4), an inclined guide pillar (6) is arranged on the small slide block in a matched mode with the small inclined guide groove (5), the top end of the inclined guide pillar (6) is fixedly connected with the fixed mould part, meanwhile, the inclined guide pillar (6) is movably connected in the large inclined guide groove (3), and the width of the large inclined guide groove (3) is larger than that of the small inclined guide groove (5),

The small sliding block (4) is connected with a protruding part (7) on one side close to the cavity, an inclined driving surface (8) is arranged on the protruding part (7), an inverted buckle insert (9) is slidably connected to the upper surface of the inclined driving surface (8) through a dovetail groove, and the moving direction of the inverted buckle insert (9) is mutually perpendicular to the moving direction of the small sliding block (4).