CN215849350U

CN215849350U - Double-color injection mold for product injection molding

Info

Publication number: CN215849350U
Application number: CN202121646350.7U
Authority: CN
Inventors: 龙儒海; 陈超; 黎猛; 韦北进; 钟招伟
Original assignee: Shenzhen Fenda Technology Co Ltd
Current assignee: Shenzhen Fenda Technology Co Ltd
Priority date: 2021-07-19
Filing date: 2021-07-19
Publication date: 2022-02-18
Anticipated expiration: 2031-07-19

Abstract

The utility model discloses a double-color injection mold for product injection molding, wherein the outer surface of a product comprises a plane and a side surface formed by bending and extending the plane upwards in the circumferential direction; the double-color injection mold for product injection comprises a rear mold and a push plate, wherein the rear mold is provided with a groove, and the bottom of the groove penetrates through a groove bottom opening; the push plate is provided with a pushing surface for pushing the product; the push plate is arranged on the rear die in a lifting way, and the push surface can enter and exit the groove through the groove bottom opening when the push plate is lifted; the pushing surface can be connected with the groove wall of the groove when positioned in the groove bottom opening so as to form a forming concave cavity for forming a finished product by enclosing with the groove wall of the groove; the plane shapes and sizes of the pushing surface and the product are consistent with the plane; the shape and the size of the groove wall of the groove are consistent with those of the side surface of the product. The double-color injection mold for product injection can avoid influencing the appearance quality of the product.

Description

Double-color injection mold for product injection molding

Technical Field

The utility model relates to the field of injection molding equipment, in particular to a double-color injection mold for product injection molding.

Background

Most of plastic products are formed by injection molds, and the plastic products with required shapes can be efficiently formed by the injection molds, so that the development pace of the injection molds is accelerated; double-shot molding refers to a molding process in which two materials different in one or both of color and type are injected into the same mold, so that an injection-molded product is formed of the two materials. Here, the mold used for the two-shot molding is a two-shot mold.

Aiming at a part of products with structures such as water resistance and the like which need to be additionally arranged on the back surface of the products, when a double-color injection mold is adopted for injection molding, a back mold and a first front film are matched to form a first semi-finished product, then a second front film is replaced to form a second semi-finished product on the back surface of the first product, at the moment, the first semi-finished product and the second semi-finished product form the products, and after cooling, a thimble in the back mold is adopted to push against the first semi-finished product to demould the products, so that finished products are obtained; however, when the ejector pin is used for ejecting, the ejector pin acts on the front surface of the first semi-finished product, and the front surface of the first semi-finished product is also the appearance surface of the product, so that the ejector pin is easy to scratch the appearance surface of the product, and the product quality is affected.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a double-color injection mold for product injection, which can avoid influencing the appearance quality of a product.

The purpose of the utility model is realized by adopting the following technical scheme:

a double-color injection mold for product injection molding is disclosed, wherein the outer surface of the product comprises a plane and a side surface formed by bending and extending the plane upwards in the circumferential direction; the double-shot injection mold for product injection molding comprises:

the rear die is provided with a groove, and the bottom of the groove penetrates through a groove bottom opening;

the push plate is provided with a pushing surface for pushing a product; the push plate is arranged on the rear die in a lifting manner, and the pushing surface can enter and exit the groove through the groove bottom opening when the push plate is lifted; the pushing surface can be connected with the groove wall of the groove when positioned in the groove bottom opening so as to form a forming concave cavity for forming a finished product by enclosing with the groove wall of the groove; the plane shapes and sizes of the pushing surface and the product are consistent with the plane; the shape and the size of the groove wall of the groove are consistent with those of the side surface of the product.

Furthermore, the number of the grooves is at least two, and the grooves are correspondingly provided with the push plates.

Furthermore, the device also comprises a top plate which can be installed on the rear die in a lifting way relative to the rear die, and at least two push plates are connected with the top plate.

Furthermore, each push plate is correspondingly provided with a push rod and is connected with the top plate through the corresponding push rod.

Furthermore, the push plate comprises a first plate body and a second plate body which are vertically arranged and fixedly connected, the cross-sectional area of the second plate body is smaller than that of the first plate body, the surface of the first plate body, which is far away from the second plate body, forms the abutting surface, and the push rod is connected with the second plate body.

Furthermore, the push plate is provided with a jack, the push rod extends into the jack, and the bolt penetrates through the push rod and the push plate.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the push plate is arranged, the shape and the size of the pushing surface of the push plate and the plane shape and the size of the product are consistent with the plane, the shape and the size of the groove wall of the groove of the rear die are consistent with the side surface of the product, and the pushing surface and the groove wall of the groove form the forming concave cavity for forming a finished product.

Drawings

FIG. 1 is a schematic structural view of a two-color injection mold for injection molding of a product according to the present invention;

FIG. 2 is an enlarged view of the structure of the portion A of FIG. 1 according to the present invention;

FIG. 3 is an enlarged view of a portion B of FIG. 1 according to the present invention;

FIG. 4 is a schematic structural view of a push plate and a push rod according to the present invention;

fig. 5 is a structural view illustrating a conventional product.

In the figure: 10. a rear mold; 20. a groove; 21. the groove wall of the groove; 30. pushing the plate; 31. pushing the dough; 32. a first plate body; 33. a second plate body; 40. producing a product; 41. a plane; 42. a side surface; 50. a top plate; 60. a push rod; 70. a jack; 80. and (4) a bolt.

Detailed Description

As shown in fig. 1 to 5, a two-color injection mold for injection molding of a product, wherein an outer surface of a product 40 includes a flat surface 41 and a side surface 42 formed by bending and extending the flat surface 41 upward in a circumferential direction.

The double-color injection mold for product injection comprises a rear mold 10 and a push plate 30, wherein the rear mold 10 is provided with a groove 20, and the bottom of the groove 20 penetrates through a groove bottom opening; the push plate 30 is formed with a push surface 31 for pushing against the product 40; the push plate 30 is arranged on the rear die 10 in a lifting way, and the pushing surface 31 can enter and exit the groove 20 through the bottom opening of the groove when the push plate is lifted; the pushing surface 31 can be connected with the groove wall 21 of the groove when positioned in the groove bottom opening so as to form a forming concave cavity for forming a finished product by enclosing with the groove wall 21 of the groove; the shapes and the sizes of the plane 41 of the pushing surface 31 and the product 40 are consistent with those of the plane 41; the shape and size of the groove wall 21 of the groove are consistent with those of the side surface 42 of the product 40, and it can be understood that when the pushing surface 31 and the groove wall 21 of the groove form a forming cavity, the groove wall 21 of the groove bends and extends upwards relative to the pushing surface 31.

It should be noted here that the two-color injection mold for injection molding of the product further includes a first front mold and a second front mold to respectively cooperate with the rear mold 10, so as to obtain the product 40 formed by two materials by injection molding.

On the basis of the structure, when the product 40 is molded, the product 40 is molded in the cavity, at this time, the abutting surface 31 corresponds to the plane 41 of the product 40, the groove wall 21 of the groove corresponds to the side surface 42 of the product 40, and then when the push plate 30 is adopted to abut against the product 40, the track of the joint of the plane 41 of the product 40 and the side surface 42 of the product 40 coincides with the track of the edge of the abutting plate 30 acting on the product 40, so that the abutting trace formed by the abutting surface 31 on the product 40 can be avoided, the influence on the appearance surface of the product 40 can be avoided, and the quality of the product 40 can be ensured.

To improve efficiency, there are at least two recesses 20, each recess 20 being correspondingly provided with a push plate 30, so that a plurality of molding cavities can be formed to mold a plurality of products 40 at the same time.

Further, this double-shot injection mold that product was moulded plastics and is used still includes the roof 50 of installing on back mould 10 relatively back mould 10 goes up and down, and two piece at least push pedal 30 all are connected with roof 50, like this, are connected roof 50 and external drive part, can realize polylith push pedal 30 synchronous motion when external drive part drives the motion of roof 50, and the drawing of patterns is unanimous, simultaneously, can the energy can be saved.

Furthermore, each push plate 30 is correspondingly provided with a push rod 60, and is connected with the top plate 50 through the corresponding push rod 60, since the top plate 50 needs to be lifted relative to the rear mold 10, in order to facilitate the rear mold 10 to have enough space for arranging the insert, the top plate 50 is conventionally arranged at the lower end of the rear mold 10, and at this time, the top plate 50 is far away from the push plate 30, and the distance can be compensated through the push rod 60.

Preferably, the push plate 30 includes a first plate 32 and a second plate 33 which are vertically separated and fixedly connected, the cross-sectional area of the second plate 33 is smaller than that of the first plate 32, a surface of the first plate 32 far away from the second plate 33 forms a pushing surface 31, and the push rod 60 is connected with the second plate 33; therefore, the volume of the second plate body 33 of the push plate 30, which is connected with the push rod 60, is smaller than that of the first plate body 32, so that the weight is reduced, and the whole volume is reduced.

Specifically, the double-color injection mold for product injection molding further comprises a plug pin 80, the push plate 30 is provided with an insertion hole 70, the push rod 60 extends into the insertion hole 70, the plug pin 80 fixedly penetrates through the push rod 60 and the push plate 30, so that the push plate 30 and the push rod 60 are connected together, at the moment, at least two push rods 60 are matched to abut against at least two positions of the push plate 30, the push plate 30 can be prevented from rotating around the plug pin 80, therefore, stable connection of the push plate 30 and the push plate 30 is realized, and the installation is convenient and fast; it can be understood that the push plate 30 has a first through hole, the push plate 30 has a second through hole, and the latch 80 passes through the first through hole and the second through hole.

More specifically, the two ends of the latch 80 are respectively formed with a limit protrusion, and the limit protrusions are abutted against the side surface 42 of the push plate 30 to prevent the latch 80 from being separated from the push plate 30 and the push rod 60.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. A double-color injection mold for product injection molding is disclosed, wherein the outer surface of a product (40) comprises a plane (41) and a side surface (42) formed by bending and extending the plane (41) upwards in the circumferential direction; it is characterized in that the double-shot injection mold for injection molding of the product comprises:

the rear die (10) is provided with a groove (20), and the bottom of the groove (20) penetrates through a groove bottom opening;

the push plate (30), the said push plate (30) has a pushing surface (31) used for pushing against the products (40); the push plate (30) is arranged on the rear die (10) in a lifting way, and the push surface (31) can enter and exit the groove (20) through the groove bottom opening when the push plate is lifted; the pushing surface (31) can be connected with the groove wall (21) of the groove when positioned in the groove bottom opening so as to form a forming concave cavity for forming a finished product by enclosing with the groove wall (21) of the groove; the shapes and the sizes of the plane (41) of the pushing surface (31) and the plane (41) of the product (40) are consistent with those of the plane (41); the groove walls (21) of the grooves are shaped and dimensioned to conform to the side surfaces (42) of the product (40).

2. A two-shot injection mold for injecting a product according to claim 1, wherein said number of said grooves (20) is at least two, and each of said grooves (20) is provided with said push plate (30) correspondingly.

3. A two-shot injection mold for injecting a product according to claim 2, further comprising a top plate (50) installed on said rear mold (10) to be movable up and down with respect to said rear mold (10), wherein at least two push plates (30) are connected to said top plate (50).

4. A two-color injection mold for injecting a product according to claim 3, wherein each of said push plates (30) is provided with a push rod (60) correspondingly, and is connected to said top plate (50) through the corresponding push rod (60).

5. The two-color injection mold for product injection molding according to claim 4, wherein the push plate (30) comprises a first plate body (32) and a second plate body (33) which are vertically separated and fixedly connected, the cross-sectional area of the second plate body (33) is smaller than that of the first plate body (32), the surface of the first plate body (32) far away from the second plate body (33) forms the pushing surface (31), and the push rod (60) is connected with the second plate body (33).

6. The dual-color injection mold for injection molding of a product according to claim 4, further comprising a plug (80), wherein the push plate (30) is provided with a receptacle (70), the push rod (60) extends into the receptacle (70), and the plug (80) penetrates through the push rod (60) and the push plate (30).