CN215882469U

CN215882469U - Demoulding mechanism of plastic mould

Info

Publication number: CN215882469U
Application number: CN202122309901.7U
Authority: CN
Inventors: 尤剑松; 尤凯明
Original assignee: Ningbo Meiding Molding Co ltd
Current assignee: Ningbo Meiding Molding Co ltd
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2022-02-22
Anticipated expiration: 2031-09-22

Abstract

The utility model discloses a demoulding mechanism of a plastic mould, which comprises an upper mould plate and a lower mould plate, wherein the upper mould plate is provided with an upper mould core, the lower mould plate is provided with a lower mould core, the upper mould core and the lower mould core can be formed into a product after being matched, one side of the product is provided with a movable core pulling rod and a core pulling assembly for driving the core pulling rod to move, the core pulling rod comprises a large cylinder, a small cylinder and a conical table for connecting the large cylinder and the small cylinder, the middle position of the conical table is provided with an annular part, the annular part is provided with an annular boss protruding outwards, the upper mould plate and the upper mould core are positioned above the product, and a pushing assembly is arranged below the product. The utility model has the advantages that the mold is reasonable in structural design, the product can be smoothly demoulded through the mutual matching operation of the core-pulling assembly and the pushing assembly, and the damage of the mold is avoided.

Description

Demoulding mechanism of plastic mould

Technical Field

The utility model relates to the field of injection molds, in particular to a demolding mechanism of a plastic mold.

Background

The injection molding method has the advantages of high production speed, high efficiency, automation in operation, various colors, various shapes, small size, accurate product size, easy replacement and forming of products with complex shapes.

At the present stage, along with the requirement of the product assembly process is higher and higher, the product structure tends to be integrated and complicated, which will increase a lot of complex structures for the product, such as the combination of the bayonet and the hole, because of the bayonet structure, if the existing traditional demoulding structure is adopted to demould the bayonet, the demoulding cannot be normally performed, if the demoulding is forced, the damage of the product or the mould is certainly caused, and aiming at the problems, a mould engineer of an enterprise needs to design a demoulding mechanism conforming to the product urgently, so that the product can be demoulded smoothly, and the damage of the mould is avoided.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a demoulding mechanism of a plastic mould, which can successfully demould a product and avoid the damage of the mould through the mutual matching of a core-pulling component and a pushing component.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a demoulding mechanism of plastic mold, includes cope match-plate pattern, lower bolster, the cope match-plate pattern be provided with the mold core, the lower bolster be provided with down the mold core, last mold core and lower mold core compound die back formable product, its characterized in that product one side be provided with mobilizable core pulling rod and drive the subassembly of loosing core that the core pulling rod removed, the stick of loosing core include big cylinder, little cylinder and connect big cylinder and little cylindrical toper platform, the middle part position of toper platform be provided with annular portion, annular portion be provided with outside bellied annular boss, cope match-plate pattern and last mold core be located the top of product, the below of product be provided with the top and push away the subassembly.

As a further improvement of the utility model, the core-pulling assembly comprises a first top plate, a second top plate, a connecting plate and a slider device, wherein the first top plate, the second top plate and the connecting plate are fixedly connected and are provided with a push plate capable of pushing the first top plate, the second top plate and the connecting plate to move up and down. When the demolding is needed, the push plate can push the first top plate, the second top plate, the connecting plate and the sliding block device to move upwards simultaneously, and the separation of a product and the lower mold core is realized.

As a further improvement of the utility model, the sliding device comprises a first sliding block and a second sliding block which move horizontally, the first sliding block and the second sliding block are both connected with a connecting plate in a sliding manner, the second sliding block is fixedly connected with a large cylindrical end of the core pulling rod, and a small cylindrical end of the core pulling rod penetrates through the first top plate to be matched with a product. The connecting plate can guarantee that first slider and second slider are smooth and easy and steady when horizontal migration, and when needs drawing of patterns, first slider and second slider move simultaneously with the direction that deviates from the product, drive and take out the core stick and move together to realize the action of loosing core of product.

As a further improvement of the utility model, the first slide block is provided with an oil cylinder for driving the first slide block to move, and the oil cylinder is connected with the first slide block through a connecting rod. The oil cylinder is used as a power element and can drive the first sliding block to reciprocate horizontally.

As a further improvement of the present invention, the pushing assembly includes an insert located in the lower die core, and a plurality of ejector pins for pushing the insert, and the ejector pins are fixedly connected to the insert through first bolts. The ejector pin can push the insert positioned in the lower die core to move upwards, so that a product is ejected out and separated from the lower die core, and the first bolt is used for connecting the ejector pin and the insert, so that reliable connection is guaranteed.

As a further improvement of the utility model, the upper template is provided with an overflow plate, a top template and a hook supporting assembly capable of supporting the upper template, the hook supporting assembly comprises a second bolt, a connecting column and a hook body, the connecting column is sleeved in the upper template, one end of the connecting column is fixedly connected with the overflow plate through the second bolt, and the other end of the connecting column is fixedly connected with the hook body through a third bolt. When the upper template is separated from the lower template, the upper mold core can be always kept in a mold matching state with the ejector pin within a certain distance through the arrangement of the hook supporting component, and after the core pulling rod is successfully separated from a product, the core pulling rod moves along with the continuation of the lower template, and finally the smooth demolding of the product is realized.

The working principle of the utility model is as follows: after a product is molded and demolding is needed, the lower template and the lower mold core move downwards simultaneously, so that the insert in the lower mold core can be separated from the lower mold core under the action of the ejector pin and the push plate, the push plate also pushes the core pulling assembly and the core pulling rod to move upwards together, the product is separated from the lower mold core, the upper mold core, the product and the ejector pin are in a mold closing state at the moment, then the oil cylinder starts to move to drive the first sliding block, the second sliding block and the core pulling rod to move together along the direction deviating from the product simultaneously to complete core pulling action, after the core pulling action is finished, the lower template and the lower mold core continue to move downwards until the product is separated from the upper mold core, and finally demolding of the product is realized.

The utility model has the advantages that the mold is reasonable in structural design, the product can be smoothly demoulded through the mutual matching operation of the core-pulling assembly and the pushing assembly, and the damage of the mold is avoided. The upper mold core is located in the upper mold plate and used for forming the upper half part of a product, the annular boss is located in the core pulling rod and used for forming a bayonet of the product, the small cylinder is located in the core pulling rod and used for forming an inner hole of the product, the pushing assembly located below the product can push the product out of the lower mold core, when the product needs to be demolded, the upper mold core and the pushing assembly are matched with each other, the core pulling assembly is guaranteed to drive the core pulling rod to deviate from the direction of the product to move for demolding, the product cannot be forcibly dragged to cause serious deformation, the product quality is influenced, the core pulling action of the core pulling rod is finally realized, and demolding is realized.

Drawings

FIG. 1 is an exploded view of the present invention;

FIG. 2 is a schematic structural view of a core rod;

FIG. 3 is an exploded view of the core back assembly.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

As shown in fig. 1 to 3: the utility model provides a demoulding mechanism of plastic mold, including cope match-plate pattern 3, lower bolster 8, cope match-plate pattern 3 is provided with mold core 4, lower bolster 8 is provided with lower mold core 7, but go up mold core 4 and lower mold core 8 compound die back formable product 5, product 5 one side is provided with mobilizable core pulling rod 6, and drive the subassembly 9 of loosing core that core pulling rod 6 removed, it includes big cylinder 60 to loose core stick 6, small circle post 62, and the toper platform 61 of connecting big cylinder 60 and small circle post 62, the middle part position of toper platform 61 is provided with annular portion 63, annular portion 63 is provided with outside bellied annular boss 630, cope match-plate pattern 3 and last mold core 4 are located the top of product 5, the below of product 5 is provided with the top and pushes away the subassembly.

The core pulling assembly 9 comprises a first top plate 90, a second top plate 93, a connecting plate 92 and a slider device 91, wherein the first top plate 90, the second top plate 93 and the connecting plate 92 are fixedly connected and are provided with a push plate 94 capable of pushing the first top plate 90, the second top plate 93 and the connecting plate 92 to move up and down.

The sliding device 91 comprises a first sliding block 911 and a second sliding block 910 which move horizontally, the first sliding block 911 and the second sliding block 910 are both connected with the connecting plate 92 in a sliding manner, the second sliding block 910 is fixedly connected with the large cylindrical end of the core pulling rod 6, and the small cylindrical end of the core pulling rod 6 penetrates through the first top plate 90 to be matched with the product 5.

The first slide block 911 is provided with an oil cylinder 96 for driving the first slide block 911 to move, and the oil cylinder 96 and the first slide block 911 are connected through a connecting rod 95.

The pushing assembly comprises an insert 10 positioned in the lower mold core 7 and a plurality of ejector pins 11 used for pushing the insert 10, and the ejector pins 11 are fixedly connected with the insert 10 through first bolts 12.

The upper die plate 3 is provided with an overflowing plate 2, a top die plate 1 and a hook supporting component 13 capable of supporting the upper die plate 3, the hook supporting component 13 comprises a second bolt 130, a connecting column 131 and a hook body 132, the connecting column 131 is sleeved in the upper die plate 3, one end of the connecting column 131 is fixedly connected with the overflowing plate 2 through the second bolt 130, and the other end of the connecting column 131 is fixedly connected with the hook body 132 through a third bolt 133.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a demoulding mechanism of plastic mold, includes cope match-plate pattern, lower bolster, the cope match-plate pattern be provided with the mold core, the lower bolster be provided with down the mold core, last mold core and lower mold core compound die back formable product, its characterized in that product one side be provided with mobilizable core pulling rod and drive the subassembly of loosing core that the core pulling rod removed, the stick of loosing core include big cylinder, little cylinder and connect big cylinder and little cylindrical toper platform, the middle part position of toper platform be provided with annular portion, annular portion be provided with outside bellied annular boss, cope match-plate pattern and last mold core be located the top of product, the below of product be provided with the top and push away the subassembly.

2. The plastic mold demolding mechanism as claimed in claim 1, wherein the core pulling assembly comprises a first top plate, a second top plate, a connecting plate and a slider device, the first top plate, the second top plate and the connecting plate are fixedly connected, and a pushing plate capable of pushing the first top plate, the second top plate and the connecting plate to move up and down is arranged.

3. The plastic mold stripping mechanism as claimed in claim 2, wherein the slide block device comprises a first slide block and a second slide block which move horizontally, the first slide block and the second slide block are both connected with the connecting plate in a sliding manner, the second slide block is fixedly connected with the large cylindrical end of the core rod, and the small cylindrical end of the core rod penetrates through the first top plate to match with the product.

4. The plastic mold stripping mechanism as claimed in claim 3, wherein the first slide block is provided with an oil cylinder for driving the first slide block to move, and the oil cylinder is connected with the first slide block through a connecting rod.

5. The demolding mechanism of a plastic mold according to claim 1, wherein the ejector assembly comprises an insert located in the lower mold core, and a plurality of ejector pins for pushing the insert, and the ejector pins are fixedly connected with the insert through the first bolts.

6. The mold stripping mechanism for plastic molds according to claim 1, characterized in that the upper mold plate is provided with an overflow plate, a top mold plate, and a hook assembly capable of supporting the upper mold plate, the hook assembly comprises a second bolt, a connecting column and a hook body, the connecting column is sleeved in the upper mold plate, one end of the connecting column is fixedly connected with the overflow plate through the second bolt, and the other end of the connecting column is fixedly connected with the hook body through a third bolt.