CN210477650U

CN210477650U - Burr-preventing mold for liquid silica gel of pouring bag

Info

Publication number: CN210477650U
Application number: CN201921241974.3U
Authority: CN
Inventors: 陈碧龙; 陈菊春; 洪妤姗; 林伟煌; 陈臻
Original assignee: Xiamen Hotvs Technology Co ltd
Current assignee: Xiamen Hotvs Technology Co ltd
Priority date: 2019-08-02
Filing date: 2019-08-02
Publication date: 2020-05-08
Anticipated expiration: 2029-08-02

Abstract

The utility model discloses a pouring liquid silica gel prevents deckle edge mould relates to liquid silica gel injection mold field, including last mould benevolence board, lower mould benevolence board and core, go up mould benevolence board, lower mould benevolence board and core combination form the die cavity that is used for the shaping product, treat that the plastic part of rubber coating places on the core, the upper end of core has round sharp arris, and sharp arris is located handing-over department and its most advanced directional plastic part of silica gel and plastic part, and plastic part is pushed down by last mould benevolence board during the compound die and inserts plastic part to certain degree of depth until sharp arris and in order to be used for sealing the glue. The utility model discloses a special core structure makes the sharp arris insert plastic part with the pre-compaction method in, utilizes the sharp arris to realize the glue that seals to silica gel, even plastic part thermal expansion warp the back can not produce silica gel deckle edge yet. The core is skillfully processed, so that the mold structure is greatly simplified, the molding is rapid, the continuous production can be ensured, and the processing cost of the product is reduced.

Description

Burr-preventing mold for liquid silica gel of pouring bag

Technical Field

The utility model relates to a liquid silica gel injection mold field especially relates to an irritate package liquid silica gel and prevent deckle edge mould.

Background

The encapsulation of liquid silica gel is an industrial difficulty, and how to effectively prevent burrs from being generated always troubles various manufacturers. The liquid silica gel has high precision requirement, and can effectively prevent burrs generally within 5 mu, but for a product of silica gel coated with plastic, because the size of a plastic part is affected by thermal expansion and cold contraction, the size precision of the obtained silica gel cannot be controlled within 5 mu, and meanwhile, the temperature of a mold of the liquid silica gel is 120-140 degrees, the plastic part is easy to deform in the injection molding process, so that burrs are not generated on the silica gel under the encapsulation condition, and a special scheme and a mold structure are needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an it prevents deckle edge mould to irritate liquid silica gel to solve silica gel package plastic rubber and produce deckle edge problem easily.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a pouring liquid silica gel prevents deckle edge mould, including last mould benevolence board, lower mould benevolence board and core, go up the mould benevolence board, lower mould benevolence board and core combination form the die cavity that is used for the shaping product, treat that the plastic part of rubber coating places on the core, the upper end of core has round sharp arris, sharp arris is located handing-over department and its most advanced directional plastic part of silica gel and plastic part, plastic part is pushed down by last mould benevolence board during the compound die and inserts plastic part up to sharp arris certain degree of depth in order to be used for sealing the.

Further, the sharp edge is inserted into the plastic part by pre-pressing to a depth of 3 to 10 threads.

Further, the sharp edge is an acute-angle sharp edge.

Furthermore, the cross section of the sharp edge is a right triangle, and the hypotenuse of the right triangle is opposite to the silica gel.

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

1. the utility model discloses a special core structure makes the sharp arris insert plastic part with the pre-compaction method in, the pre-compaction degree of depth of sharp arris to plastic part is between 3 silks to 10 silks, under the condition of the outward appearance of not destroying plastic part, utilizes the sharp arris to realize the glue that seals to silica gel, even the plastic part thermal expansion warp the back can not produce silica gel deckle edge yet.

2. The core is skillfully processed, so that the mold structure is greatly simplified, the molding is rapid, the continuous production can be ensured, and the processing cost of the product is reduced.

Drawings

FIG. 1 is a partial structure diagram of a bag liquid silica gel burr-proof mold according to an embodiment of the present invention;

FIG. 2 is an enlarged view at B in FIG. 1;

fig. 3 is an enlarged view at a in fig. 1.

Detailed Description

The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 3, a pouring liquid silicone rubber burr-proof mold comprises an upper mold core plate 1, a lower mold core plate 2 and a mold core 3, wherein the upper mold core plate 1, the lower mold core plate 2 and the mold core 3 are combined to form a mold cavity 4 for molding a product, a plastic part 5 to be encapsulated is placed on the mold core 3, a sharp edge 31 is arranged at the upper end of the mold core 3, the sharp edge 31 is located at the joint of the silicone rubber 6 and the plastic part 5, the tip of the sharp edge points to the plastic part 5, and the plastic part 5 is pressed down by the upper mold core plate 1 until the sharp edge 31 is inserted into the plastic part 5 by a certain depth for encapsulating during mold closing.

The connection relationship between the upper core plate 1, the lower core plate 2 and the mold core 3 can be found by referring to the prior art, and is not described herein again. In order to facilitate understanding of the specific usage of the liquid silicone burr-proof mold, a silicone 6 plastic outlet valve will be described in detail below.

The water outlet valve comprises a plastic part 5 and silica gel 6 wrapped on the plastic part 5. The plastic part 5 is annular and is used as a framework of the water outlet valve, and the silica gel 6 is wrapped on the plastic part 5 through injection molding. The joint of the plastic part 5 and the silicone rubber 6 is partially located on the surface of the core 3, where burrs are easily formed. The upper end of a mold core 3 of a mold for molding the water outlet valve is provided with a circle of sharp edges 31, the sharp edges 31 are positioned at the joint of the silica gel 6 and the plastic part 5, the sharp ends of the sharp edges point to the plastic part 5, and the plastic part 5 is placed on the mold core 3. After the die is closed, the mold core 3, the lower mold core plate 2 and the upper mold core plate 1 limit the plastic part 5, the plastic part 5 is pressed down by the upper mold core plate 1 until the sharp edge 31 is inserted into the plastic part 5 for a certain depth, and then liquid silica gel 6 is injected into the cavity 4. The sharp edge 31 plays a role of sealing glue, and burrs are prevented from being generated at the position of the sharp edge 31.

In this embodiment, the sharp edge 31 is inserted into the plastic part 5 by pre-pressing to a depth of 3 to 10 filaments, and then the liquid silicone rubber 6 is injected into the cavity 4 to wrap the plastic part 5. Wherein 1 filament equals 0.01 mm.

In the embodiment, the sharp edge 31 is an acute sharp edge, so that the acute sharp edge can be inserted into the plastic part 5 with a small pre-pressure, and the formed indentation is small and does not affect the appearance of the outlet valve.

Preferably, the sharp edge 31 has a cross section of a right triangle, and the hypotenuse of the right triangle is opposite to the silicone rubber 6.

The utility model discloses a 3 structures of special core make sharp arriss 31 insert plastic part 5 in with the pre-compaction method, and sharp arris 31 is to plastic part 5's pre-compaction degree of depth between 3 silk to 10 silks, under the condition of not destroying plastic part 5's outward appearance, utilizes sharp arris 31 to realize sealing glue to silica gel 6, even can not produce silica gel 6 deckle edge after plastic part 5 thermal expansion warp yet. The core 3 is skillfully processed, so that the mold structure is greatly simplified, the molding is rapid, the continuous production can be ensured, and the processing cost of the product is reduced.

The above description is only an embodiment utilizing the technical content of the present disclosure, and any modification and variation made by those skilled in the art can be covered by the claims of the present disclosure, and not limited to the embodiments disclosed.

Claims

1. The utility model provides a irritate package liquid silica gel and prevent deckle edge mould, includes mould benevolence board, lower mould benevolence board and core, goes up mould benevolence board, lower mould benevolence board and core combination and forms the die cavity that is used for the shaping product, its characterized in that: and placing the plastic part to be encapsulated on the mold core, wherein the upper end of the mold core is provided with a sharp edge, the sharp edge is positioned at the joint of the silica gel and the plastic part, the sharp end of the sharp edge points to the plastic part, and the plastic part is pressed down by the upper mold core plate until the sharp edge is inserted into the plastic part by a certain depth for encapsulating during mold closing.

2. The anti-burr mold for liquid silicone rubber bag according to claim 1, wherein: the depth of the sharp edge inserted into the plastic part through prepressing is 3 to 10 threads.

3. The anti-burr mold for liquid silicone rubber bag according to claim 1, wherein: the sharp edge is an acute angle sharp edge.

4. The anti-burr mold for liquid silicone rubber bag according to claim 1, wherein: the cross section of the sharp edge is a right triangle, and the hypotenuse of the right triangle is opposite to the silica gel.