CN219466871U - Multi-directional core-pulling injection mold for complex and multi-featured thin-walled plastic shells - Google Patents

Abstract

The utility model discloses a multi-directional core-pulling injection mold for a complex and multi-featured thin-walled plastic shell. The fixed template is equipped with a core-pulling mechanism located outside the molding cavity and fixed by fastening screws to achieve the effect of demoulding on both sides with the movement of the movable template during the mold opening process of the movable template and the fixed template. The mold is: the movement of the movable template, the force generated by the fixed template acts on the inclined guide column on the core-pulling mechanism, and realizes that the inclined guide column drives the core-pulling slider to move in the chute to the core-pulling direction with the force to complete the core-pulling At the same time, the separation of the plastic part and the condensed material is completed. After the movable template moves to the position of the first demoulding, the ejector pin starts the second demoulding, and the condensed material is moved out from the top of the movable template. At this time, the push plate drives the ejector pin to push out the plastic. Parts, complete a cycle of injection molding, multi-directional core pulling, improve the efficiency of injection molding processing of complex structural parts.

Description

Multi-directional core-pulling injection mold for complex and multi-featured thin-walled plastic shells

technical field

The utility model belongs to the technical field of injection molds, in particular to a multi-directional core-pulling injection mold for complex and multi-featured thin-walled plastic shells.

Background technique

For thin-walled plastic parts with complex structures, such as SR3 thin-walled plastic shells with complex features such as protrusions, buckles, and ribs, it is easy to Warpage and deformation of the parts. At the same time, the form, quantity, and position of the gate also have a certain impact on the molding and use of the parts. Traditional injection molding molds with complex structures have complex structures. When processing products, the mold core 1. The processing of the cavity has a great influence, which increases the inconvenience of the injection molding operation of the product and reduces the efficiency of the injection molding of the product;

Therefore, the utility model provides a multi-directional core-pulling injection mold for a complex and multi-featured thin-walled plastic shell through a multi-directional core-pulling mechanism.

Utility model content

The purpose of this utility model is to provide a multi-directional core-pulling injection mold for a complex and multi-featured thin-walled plastic shell, so as to solve the problems raised in the above-mentioned background technology.

In order to achieve the above object, the utility model provides the following technical solutions:

A multi-directional core-pulling injection mold for complex and multi-featured thin-walled plastic shells, comprising:

A fixed mold base, the fixed mold base is provided with a fixed template with a molding cavity on the upper surface through a floating plate, and the fixed template is provided with a core-pulling mechanism located outside the molding cavity and fixed by fastening screws;

The core-pulling mechanism includes an inclined guide post, which is set in the chute on the fixed template through the core-pulling slider, and slides in the chute with the push of the core-pulling slider;

The base of the movable mold is fixed with a support block by bolts, and the ends of the bolts pass through the support block to connect the movable formwork. The middle part of the support block is provided with a push rod that runs through the bottom end of the forming core.

Further, a sprue sleeve is provided in the positioning circle at the center of the bottom end of the fixed mold base.

Further, cooling water channels are respectively provided in the molding cavity and the molding core.

Further, several core-pulling mechanisms are provided according to the requirements of workpiece production, and the core-pulling sliders on the core-pulling mechanism are arranged in the molding cavity.

Further, the support block is provided with a reset rod whose end is fixed to the forming core, and the reset rod is provided with a return spring connected with the support block.

Further, the outer edge of the top of the fixed formwork is provided with a limit mechanism for receiving and guiding the movable formwork.

The utility model has the following technical effects and advantages:

The complex and multi-featured thin-walled plastic shell multi-directional core-pulling injection mold is equipped with a core-pulling mechanism on the outside of the molding cavity on the fixed platen, so that the movable platen can be moved before the melt is injected into the space between the forming cavity and the forming core. The gap between the lower moving plate and the fixed plate is in a closed state. The injection molding machine injects the plasticized melt into the molding cavity through the pouring system on the movable platen to complete the mold filling in the forming cavity. The cooling water channel on the cooling system cools the plastic parts The formed workpiece is cooled, and the movable template moves up from the top of the fixed template through the driving equipment. During the mold opening process of the movable template and the fixed template, the effect of demoulding on both sides is achieved with the movement of the movable template. One demoulding is: dynamic The movement of the template, the force generated by the fixed template acts on the inclined guide column on the core-pulling mechanism, so that the inclined guide column drives the core-pulling slider to move in the direction of core-pulling in the chute with the force, and completes the core-pulling effect at the same time For the separation of the plastic part and the condensed material, after the movable template moves to the position of the first demoulding, the ejector pin starts the second demoulding, and the condensed material is moved out from the top of the movable template, at this time, the push plate drives the ejector pin to push out the plastic part, completing a Periodic injection molding, and then, under the guidance of the guide column, the movable platen is clamped again with the fixed platen, reset by the return spring, and at the same time the molding core in the molding cavity is reset, and finally the mold clamping is completed, and the next injection molding product is started , to achieve multi-directional core pulling when the workpiece is formed through the core-pulling mechanism set on the outer edge of the molding cavity, and improve the efficiency of injection molding of complex-structured workpieces.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a structural schematic diagram of the core-pulling mechanism of the present invention.

In the figure: 1, fixed mold base; 11, floating plate; 12, fixed template; 121, limit mechanism; 13, forming cavity; 14, fastening screw; 15, core-pulling mechanism; Core pulling slider; 16, sprue sleeve; 2, movable mold base; 21, bolt; 22, support block; 221, reset rod; 222, reset spring; 23, movable template; 24, forming core; 25, ejector rod ; 26, cooling water channel.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

The utility model provides a complex and multi-featured thin-walled plastic shell multi-directional core-pulling injection mold as shown in Figure 1-2, including:

Fixed mold base 1, the fixed mold base 1 is provided with a fixed template 12 with a molding cavity 13 on the upper surface through a floating plate 11, and a sprue sleeve 16 is provided in the positioning ring at the center of the bottom end of the fixed mold base 1, and the sprue sleeve 16 is used to inject melt into the molding cavity 13 in accordance with the molding of the product. The fixed template 12 is provided with a core-pulling mechanism 15 which is set on the outside of the molding cavity 13 on the fixed mold base 1 and fixed by fastening screws 14;

The core-pulling mechanism 15 includes an inclined guide column 151, which is set in the chute on the fixed template 12 through the core-pulling slider 152, and slides in the chute with the push of the core-pulling slider 152;

The movable mold base 2 is fixed with a support block 22 by a bolt 21, and the end of the bolt 21 penetrates through the support block 22 and is connected with a movable mold plate 23, and the bottom end of the movable mold plate 23 is provided with a hole that cooperates with the molding cavity 13 to form a workpiece. Forming core 24, the middle part of supporting block 22 is provided with the ejector pin 25 that runs through the bottom of forming core 24, and the product on the moving formwork 23 is reached the effect of secondary demoulding through the pushing assembly of ejector bar 25 braking end, and supporting block 22 is provided with There is a reset rod 221 whose end is fixed to the molding core 24, and a reset spring 222 connected to the support block 22 is arranged on the reset rod 221, and the reset rod 221 and the reset spring 222 cooperate to open the mold between the movable template 23 and the fixed template 12, The outer edge of the top of the fixed formwork 12 is provided with a limit mechanism 121 for receiving and guiding the movable formwork 23 . The limit mechanism 121 is used for position limit guide of movement when the movable template 23 and the fixed template 12 are molded together to process products;

The molding cavity 13 and the molding core 24 are respectively provided with a cooling water channel 26, and the cooling water channel 26 is used to cool and shape the product in the molding cavity 13 with the flow of cooling water in the cooling water channel 26 after the product is formed;

The core-pulling mechanism 15 is provided with several according to the needs of workpiece production, and the core-pulling slide block 152 on the core-pulling mechanism 15 is arranged in the molding cavity 13, and the core-pulling mechanism 15 is positioned at the different angles of the molding cavity 13 inner wall, is used for matching When the molding cavity 13 is producing the product, the inclined guide post 151 on the core pulling mechanism 15 cooperates with the injection molding production of the product to pull the core.

The complex and multi-featured thin-walled plastic shell multi-directional core-pulling injection mold is provided with a core-pulling mechanism 15 on the outside of the molding cavity 13 on the fixed template 12 to realize injection molding in the space between the molding cavity 13 and the molding core 24. In front of the body, the movable template 23 moves down and is in a closed state between the fixed template 12, and the injection molding machine injects the plasticized melt into the molding cavity 13 through the gating system on the movable template 23 to complete the filling of the molding cavity 13. The cooling water channel 26 on the cooling system cools the workpieces formed by plastic parts. The movable template 23 moves up from the top of the fixed template 12 through the driving equipment. During the mold opening process of the movable template 23 and the fixed template 12, the movable template 23 The movement of the mold can achieve the effect of demoulding on both sides. One demoulding is: the movement of the movable template 23, the force generated by the fixed template 12 acts on the inclined guide post 151 on the core-pulling mechanism 15, and the inclined guide post 151 is driven by the force. The core-pulling slider 152 moves in the chute to the core-pulling direction, completes the core-pulling effect and at the same time completes the separation of the plastic part and the aggregate. After the movable template 23 moves to the position of the primary demoulding, the ejector pin 25 starts the secondary demoulding , the condensed material is moved out from the top of the movable formwork 23, and the push plate at the end of the ejector rod 25 drives the ejector rod 25 to push out the plastic part, completing a cycle of injection molding;

When forming the next group of products, the movable platen 23 will close the mold with the fixed platen 12 again under the guidance of the limit mechanism 121, and will be reset by the return spring 222. At the same time, the molding core 24 in the molding cavity 13 will be reset, and finally the closing of the mold will be completed. mold, start the next injection molding product, and realize multi-directional core pulling when the workpiece is formed through the core pulling mechanism 15 provided on the outer edge of the molding cavity 13, so as to improve the efficiency of injection molding processing of the workpiece with complex structure.

Finally, it should be noted that: the above is only a preferred embodiment of the utility model, and is not intended to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art , it can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model, All should be included within the protection scope of the present utility model.

Claims (6)

1. A multi-directional core-pulling injection mold for a complex and multi-featured thin-walled plastic shell, characterized in that it comprises: A fixed mold base (1), the fixed mold base (1) is provided with a fixed template (12) with a molding cavity (13) on the upper surface through a floating plate (11), and the fixed template (12) is provided with There is a core-pulling mechanism (15) on the outside of the molding cavity (13) and fixed by fastening screws (14); The core-pulling mechanism (15) includes a slanted guide post (151), and the slanted guide post (151) is set in the chute on the fixed template (12) through the core-pulling slider (152), and in the chute Push and slide by the core-pulling slider (152); A movable mold base (2), on which a support block (22) is fixed by a bolt (21), and the end of the bolt (21) passes through the support block (22) and is connected with a movable formwork (23), The bottom end of the moving template (23) is provided with a molding core (24) that cooperates with the molding cavity (13) to form a workpiece, and the middle part of the support block (22) is provided with a push rod ( 25). 2. A multi-directional core-pulling injection mold for complex and multi-featured thin-walled plastic shells according to claim 1, characterized in that: a sprue sleeve is provided in the positioning circle at the center of the bottom end of the fixed mold base (1) (16). 3. A multi-directional core-pulling injection mold for complex and multi-featured thin-walled plastic shells according to claim 1, characterized in that: the molding cavity (13) and the molding core (24) are respectively provided with cooling water channels (26). 4. A multi-directional core-pulling injection mold for complex and multi-featured thin-walled plastic shells according to claim 1, characterized in that: said core-pulling mechanisms (15) are provided with several core-pulling mechanisms (15) according to the needs of workpiece production, and the pulling The core-pulling slider (152) on the core mechanism (15) is arranged in the molding cavity (13). 5. A multi-directional core-pulling injection mold for complex and multi-featured thin-walled plastic shells according to claim 1, characterized in that: the support block (22) is provided with a reset position where the end and the molding core (24) are fixed. rod (221), and the reset rod (221) is provided with a return spring (222) connected with the support block (22). 6. A multi-directional core-pulling injection mold for complex and multi-featured thin-walled plastic shells according to claim 1, characterized in that: the outer edge of the top of the fixed template (12) is provided with a movable template (23) to receive and The limit mechanism (121) that is guided to the movable template (23).