CN211591120U

CN211591120U - Precision mold for double-material injection molding

Info

Publication number: CN211591120U
Application number: CN201922384748.7U
Authority: CN
Inventors: 冯连杰
Original assignee: Tianjin Shuangwei Precision Mould Co ltd
Current assignee: Tianjin Shuangwei Precision Mould Co ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-09-29
Anticipated expiration: 2029-12-26

Abstract

The utility model discloses a precision mould for double-material injection molding, which relates to the technical field of injection moulds and comprises an upper mould base and a lower mould base arranged below the upper mould base, wherein four ends of the bottom surface of the upper mould base are fixedly provided with assembling shafts, the bottom surface of the assembling shafts is fixedly provided with a positioning block, the bottom surface of the positioning block is fixedly provided with an upper positioning magnetic block, four ends of the surface of the lower mould base are respectively provided with an assembling shaft groove, the inner bottom surface of the assembling shaft groove is provided with a positioning groove, the inner side of the positioning groove is fixedly provided with a lower positioning magnetic block, the utility model discloses a positioning block is matched and inserted in the positioning groove, the reinforcing block is matched and inserted in the reinforcing groove, and the upper mould base can be rapidly and stably positioned on the lower mould base by utilizing the adsorption acting force generated between the upper positioning magnetic block and the lower positioning magnetic block, thereby effectively preventing the easy occurrence, the assembly precision of the die is improved.

Description

Precision mold for double-material injection molding

Technical Field

The utility model relates to an injection mold technical field specifically is an accurate mould that extra quality was moulded plastics.

Background

The mould is a mould and a tool for obtaining the required product by injection moulding, blow moulding, extrusion, die casting or forging forming, smelting, stamping and other methods in industrial production, the mould is a tool for manufacturing a formed article, the tool is composed of various parts, different moulds are composed of different parts, the processing of the appearance of the article is realized mainly by changing the physical state of the formed material, the injection mould is a tool for producing plastic products and also a tool for endowing the plastic products with complete structures and accurate sizes, the injection moulding is a processing method used when producing some parts with complex shapes in batches, in particular, the heated and melted plastic is injected into a mould cavity by an injection moulding machine under high pressure, and after cooling and solidification, a formed product is obtained, the double-material injection mould is a mould, namely two plastic materials are injected on the same injection moulding machine, and are formed by two times, but the product is only molded once, this molding process is commonly referred to as two-shot molding, and is typically accomplished with a single set of molds and requires a specialized two-shot injection molding machine.

However, in the assembling and using process of the conventional two-material injection mold, the assembling precision of the mold is affected due to the micro-offset phenomenon easily occurring when the upper mold base and the lower mold base are assembled, and therefore, the technical personnel in the field provide a two-material injection precision mold.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an accurate mould that extra quality was moulded plastics to provide traditional extra quality injection mold in solving above-mentioned background art in the assembly use, because the upper die base takes place little skew phenomenon easily with the die holder assembly, lead to influencing the problem of the assembly precision of mould.

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

a precision die for double-material injection molding, which comprises an upper die holder and a lower die holder arranged below the upper die holder, four ends of the bottom end surface of the upper die holder are fixedly provided with assembly shafts, the bottom end surface of each assembly shaft is fixedly provided with a positioning block, the bottom surface of the positioning block is fixedly provided with an upper positioning magnetic block, four ends of the surface of the lower die holder are respectively provided with an assembly shaft groove, the surface of the bottom end of the inner side of the assembling shaft groove is provided with a positioning groove, the inner side of the positioning groove is fixedly provided with a lower positioning magnetic block, reinforcing blocks are fixedly arranged at both ends of the upper die base, reinforcing seats are fixedly arranged at both ends of the lower die base, a locking screw hole is arranged at the side surface of the reinforcing seat, a first injection port is arranged on the upper end surface of the upper die seat, and a second injection port is formed in one side position, far away from the first injection port, of the upper end surface of the upper die base.

As a further aspect of the present invention: the cross-sectional shapes of the positioning block and the positioning groove are both rectangular, and the size of the positioning block is matched with that of the positioning groove.

As a further aspect of the present invention: the magnetism of the end, close to the upper positioning magnetic block, of the lower positioning magnetic block is opposite to that of the end, close to the upper positioning magnetic block, of the lower positioning magnetic block.

As a further aspect of the present invention: the surface of the reinforcing seat is provided with a reinforcing groove, and the size of the reinforcing block is matched with that of the reinforcing groove.

As a further aspect of the present invention: the side position department of boss has seted up the assembly screw, assembly screw and the equal threaded connection of locking screw have locking screw.

As a further aspect of the present invention: the inner side surface of the lower die base is positioned under the first injection port and is provided with a first charging chute, and the inner side surface of the lower die base is positioned under the second injection port and is provided with a second charging chute.

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

the utility model discloses set up the locating piece, go up the location magnetic path, the boss, strengthen the seat, the reinforcing groove, positioning groove and lower location magnetic path, through pegging graft in positioning groove with the locating piece cooperation, the boss cooperation is pegged graft in the reinforcing groove, utilize the adsorption effort that produces between location magnetic path and the lower location magnetic path, make the upper die base can fix a position fast firmly on the die holder, prevent effectively that the easy little skew phenomenon of taking place in upper die base and the die holder assembling process, be favorable to improving the assembly precision of mould.

Drawings

FIG. 1 is a schematic view of a blow-open three-dimensional structure of a two-part injection molded precision mold;

FIG. 2 is a schematic front view of a precision mold for two-material injection molding;

fig. 3 is a schematic perspective view of an assembled precision mold for two-material injection molding.

In the figure: 1. an upper die holder; 101. a first injection port; 102. a second injection port; 2. a lower die holder; 201. A first charging chute; 202. a second charging chute; 3. assembling a shaft; 4. assembling a shaft groove; 5. positioning blocks; 501. an upper positioning magnetic block; 6. a reinforcing block; 601. assembling a screw hole; 7. a reinforcement base; 701. a reinforcing groove; 702. locking the screw hole; 8. locking the screw; 9. a positioning groove; 901. and a lower positioning magnetic block.

Detailed Description

Please refer to fig. 1-3, in the embodiment of the present invention, an accurate mold for injection molding of two materials, including upper mold base 1 and lower mold base 2 arranged below upper mold base 1, four ends of the bottom surface of upper mold base 1 are all fixedly provided with assembly shaft 3, the bottom surface of assembly shaft 3 is fixedly provided with locating piece 5, the bottom surface of locating piece 5 is fixedly provided with upper positioning magnetic block 501, four ends of the surface of lower mold base 2 are all provided with assembly shaft groove 4, positioning groove 9 is provided with the inboard bottom surface of assembly shaft groove 4, the inboard of positioning groove 9 is fixedly provided with lower positioning magnetic block 901, both ends of upper mold base 1 are all fixedly provided with reinforcing block 6, both ends of lower mold base 2 are all fixedly provided with reinforcing base 7, locking screw 702 has been seted up to the side position department of reinforcing base 7, first sprue 101 has been seted up to the upper end surface of upper mold base 1, one side position department that first sprue 101 was kept away from to the upper end surface of upper mold base.

In fig. 2: the cross-sectional shapes of the positioning block 5 and the positioning groove 9 are rectangular, the size of the positioning block 5 is matched with that of the positioning groove 9, and the purpose that the positioning block 5 can be matched and inserted into the positioning groove 9 is achieved.

In fig. 2: the magnetic properties of the ends, close to the upper positioning magnetic block 501 and the lower positioning magnetic block 901, are opposite to each other, so that the purpose of generating an adsorption acting force between the upper positioning magnetic block 501 and the lower positioning magnetic block 901 is achieved.

In fig. 2: strengthen the surface of seat 7 and seted up reinforcing groove 701, the size of boss 6 and the size looks adaptation of reinforcing groove 701 have reached and have made boss 6 can cooperate the grafting in the purpose of reinforcing groove 701.

In fig. 2: the side position of the reinforcing block 6 is provided with an assembling screw hole 601, the assembling screw hole 601 and the locking screw hole 702 are both in threaded connection with a locking screw 8, and the purpose of fixedly assembling the upper die base 1 and the lower die base 2 is achieved.

In fig. 2: the inner side surface of the lower die holder 2 is positioned under the first injection port 101 and is provided with a first charging chute 201, and the inner side surface of the lower die holder 2 is positioned under the second injection port 102 and is provided with a second charging chute 202.

The utility model discloses a theory of operation is: in the process of using the precision die, when the upper die base 1 and the lower die base 2 need to be assembled, the bottom surface of the assembling shaft 3 is fixedly provided with the positioning block 5, the inner side bottom surface of the assembling shaft groove 4 is provided with the positioning groove 9, the positioning block 5 is inserted into the positioning groove 9 in a matched mode, the reinforcing block 6 is inserted into the reinforcing groove 701 in a matched mode, adsorption acting force can be generated between the upper positioning magnetic block 501 and the lower positioning magnetic block 901, the upper die base 1 can be rapidly and stably positioned on the lower die base 2, the phenomenon of micro-deviation easily generated in the assembling process of the upper die base 1 and the lower die base 2 is prevented, and the locking screw 8 is fixedly connected with the locking screw hole 702 through the assembling screw hole 601.

The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The precision mold for double-material injection molding comprises an upper mold base (1) and a lower mold base (2) arranged below the upper mold base (1), and is characterized in that four ends of the bottom surface of the upper mold base (1) are fixedly provided with assembling shafts (3), the bottom surface of each assembling shaft (3) is fixedly provided with a positioning block (5), the bottom surface of each positioning block (5) is fixedly provided with an upper positioning magnetic block (501), four ends of the surface of the lower mold base (2) are respectively provided with an assembling shaft groove (4), the inner side bottom surface of each assembling shaft groove (4) is provided with a positioning groove (9), the inner side of each positioning groove (9) is fixedly provided with a lower positioning magnetic block (901), two ends of the upper mold base (1) are respectively and fixedly provided with a reinforcing block (6), two ends of the lower mold base (2) are respectively and fixedly provided with a reinforcing base (7), and the lateral position of each reinforcing base (7) is provided with, the upper end surface of the upper die base (1) is provided with a first injection port (101), and the upper end surface of the upper die base (1) is far away from one side of the first injection port (101) and is provided with a second injection port (102).

2. The precision mold for double injection molding according to claim 1, wherein the cross-sectional shapes of the positioning block (5) and the positioning groove (9) are rectangular, and the size of the positioning block (5) is matched with the size of the positioning groove (9).

3. The precision mold for double-material injection molding according to claim 1, wherein the magnetism of the ends of the upper positioning magnetic block (501) and the lower positioning magnetic block (901) close to each other are opposite.

4. The precision mold for double injection molding according to claim 1, wherein the surface of the reinforcing seat (7) is provided with a reinforcing groove (701), and the size of the reinforcing block (6) is matched with the size of the reinforcing groove (701).

5. The precision mold for double-material injection molding according to claim 1, wherein an assembly screw hole (601) is formed in the side position of the reinforcing block (6), and the assembly screw hole (601) and the locking screw hole (702) are both in threaded connection with a locking screw (8).

6. The precision mold for double-material injection molding according to claim 1, wherein a first blanking groove (201) is formed in the inner side surface of the lower mold base (2) right below the first injection port (101), and a second blanking groove (202) is formed in the inner side surface of the lower mold base (2) right below the second injection port (102).