Liquid rubber coating upper cover

Abstract

The utility model relates to the technical field of mold forming, in particular to a liquid rubber-coated upper cover, which comprises a middle frame and an outer rubber-coated structure, the outer rubber-coated structure is coated on the middle frame through a forming mold, the middle frame comprises a first frame and a second frame, a gap is reserved between the first frame and the second frame, the middle frame further comprises a main body, and the main body is arranged on the outer rubber-coated structure. And the first frame and the second frame are arranged on the main body and are in central symmetry relative to the main body. The problem that the manual bonding efficiency is relatively low when the existing liquid silica gel product is produced is effectively solved; according to the utility model, the outer side rubber coating structure of the self-adhesion LSR A / B silica gel and the first adhesion groove arranged on the first frame are adopted to carry out two-injection molding, so that compared with the existing middle frame molding which needs to be produced by coating an adhesive, the working procedures of coating the adhesive are reduced by changing the structure and adjusting the temperature of the mold in the two-injection molding process; the cost is reduced, and meanwhile, the output efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mould forming technical field, concretely relates to a liquid encapsulation upper cover. BACKGROUND

[0002] In the process of plastic product production, in order to make the outside of plastic product have better hand feeling and performance, a layer of self-adhesive LSR liquid silicone is often covered on the outside of plastic product, and the existing LSR liquid silicone needs manual brushing of adhesive, and the liquid silicone is fixed on the plastic product through the adhesive, but manual application of adhesive is low in efficiency and also low in output efficiency. SUMMARY

[0003] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the utility model is to provide a liquid encapsulation upper cover, which effectively solves the problem of low manual bonding efficiency in the production of existing liquid silicone products.

[0004] The technical scheme solved by the utility model is a liquid encapsulation upper cover, which comprises a middle frame and an outside encapsulation structure, the outside encapsulation structure is covered on the middle frame through a forming die, the middle frame comprises a first frame and a second frame, there is a gap between the first frame and the second frame, and the middle frame further comprises a main body, and the first frame and the second frame are arranged on the main body and are centrally symmetric relative to the main body.

[0005] Preferably, a plurality of key concave holes are formed in the first frame and the second frame, a spring piece is arranged in each key concave hole, and a trigger block for triggering the key is arranged on the inner side of the spring piece and faces the inner side of the main body.

[0006] Preferably, a first attachment groove is formed in the first frame and located on one side of the outermost key concave hole, and the first attachment groove is used for limiting and fixing the outside encapsulation structure.

[0007] Preferably, the first attachment groove comprises a positioning groove with a smooth curved surface and an inner recess shape, and a plurality of limiting grooves for auxiliary positioning are formed in the smooth curved surface of the positioning groove.

[0008] Preferably, a positioning protrusion is further arranged in the positioning groove, and the positioning protrusion is inserted into the outside encapsulation structure to fix the outside encapsulation structure.

[0009] Preferably, a plurality of auxiliary grooves are formed in the main body and located on one side of the second frame and arranged along the edge of the second frame, and the outside encapsulation structure is located in the auxiliary grooves to position the outside encapsulation structure.

[0010] Preferably, a connecting groove is formed in the second frame, and the connecting groove is used for connecting the middle frame with an external device.

[0011] The utility model discloses beneficial effect is:

[0012] The utility model discloses through adopting the outside rubber coating structure of self -adhesion LSR A B silica gel and setting first attachment groove on the first frame and carries out two -shot forming, relative to the current middle frame forming need through smearing adhesive production, through the change of structure and the temperature reduction adhesive smearing procedure of adjusting mould in the process of two -shot forming, has reduced the cost, has promoted the output efficiency simultaneously. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the three -dimensional structure schematic diagram of the utility model, and the three -dimensional structure schematic diagram of the utility model is shown in the figure.

[0014] Figure 2 It is the cut right -view structure schematic diagram of the utility model.

[0015] Figure 3 It is the cut main view structure schematic diagram of the utility model.

[0016] Figure 4 It is the three -dimensional structure schematic diagram of the middle frame in the utility model.

[0017] Figure 5 It is the three -dimensional structure schematic diagram of the middle frame in the utility model.

[0018] Figure 6 It is the three -dimensional structure schematic diagram of the middle frame in the utility model.

[0019] In the drawing, 1 - outside rubber coating structure;2 - first frame;3 - second frame;4 - main part;5 - button recess hole;6 - spring piece;7 - trigger block;8 - positioning groove;9 - limit slot;10 - positioning protrusion;11 - auxiliary recess;12 - connecting groove. DETAILED DESCRIPTION

[0020] The specific implementation of the utility model is further explained in detail below in connection with the drawings.

[0021] Refer to the description accompanying Figures 1-6 A liquid rubber coating upper cover, including middle frame and outside rubber coating structure 1, outside rubber coating structure 1 adopts self -adhesion LSR A B silica gel, and self -adhesion LSR A B silica gel refers to the liquid silicone of self -adhesion glue, and the main role is under the condition of not brushing treating agent on PC surface, and PC perfect adhesion, and relevant performance, surface feel can reach the requirement in the industry.

[0022] The outer side rubber coating structure 1 is covered on the middle frame through a forming die, the forming die is composed of 5 parts, 3 rear molds, a PC front mold and a silica gel front mold; during forming, the 3 rear molds are controlled to rotate by a machine table, and are first formed with the PC front mold according to a set time period, and are rotated again to be secondarily formed with the silica gel front mold after the mold is opened, and the process is adjusted according to the temperature of the mold and the vulcanization time of the silica gel to achieve the adhesion between the PC and the silica gel.

[0023] The middle frame is divided into a first frame 2 and a second frame 3, the first frame 2 and the second frame 3 are connected through a main body 4, the first frame 2 and the second frame 3 are not in direct contact, and the first frame 2 and the second frame 3 are centrally symmetrically distributed on the main body 4, and the first frame 2 and the second frame 3 are used to fix the outer side rubber coating structure 1.

[0024] A plurality of key recesses 5 are formed on the first frame 2 and the second frame 3, the key recesses 5 are used to provide a concave space, a spring piece 6 is arranged in the key recess 5, an inside of the spring piece 6 is provided with a trigger block 7 facing an inside of the main body 4 and used for triggering a key, the spring piece 6 is made of plastic material, and can bear a certain force to deform after the spring piece 6 is pressed down, and the spring piece 6 drives the trigger block 7 to move to a trigger point.

[0025] A first attachment groove is formed on the first frame 2 and located at one side of the outermost key recess 5, the first attachment groove is concave and smooth at the edge, the outer side rubber coating structure 1 fills the first attachment groove and is in a peripheral arc shape, and better holding feeling can be provided, and the concave and smooth edge of the first attachment groove can make the outer side rubber coating structure 1 better filled.

[0026] The first attachment groove includes a positioning groove 8 and a limiting groove 9, the positioning groove 8 is located at a concave position of the first attachment groove, and the limiting groove 9 is located at a smooth curved surface edge of the first attachment groove, the limiting groove 9 is a plurality of and is arrayed, and the limiting groove 9 is used to limit and connect the outer side rubber coating structure 1.

[0027] The positioning groove 8 is further provided with a positioning protrusion 10, the positioning protrusion 10 is inserted into the outer side rubber coating structure 1 to further fix the outer side rubber coating structure 1.

[0028] A plurality of auxiliary grooves 11 are formed on the main body 4 and located at one side of the second frame 3 and arranged along an edge of the second frame 3, and the outer side rubber coating structure 1 is inserted into the auxiliary grooves 11 to position and limit the outer side rubber coating structure 1.

[0029] The second frame 3 is further provided with a connecting groove 12, and an external device is electrically connected with a circuit board in the main body 4 through the connecting groove 12.

[0030] Since the connecting groove 12 needs to be formed on the second frame 3, in order to ensure the overall stress of the middle frame, the second frame 3 is thicker than the first frame 2, and a corresponding groove body is not formed in the middle of the second frame 3 for limiting.

[0031] The utility model discloses in the production process, first frame 2, second frame 3 and main part 4 are through mould one injection molding, open mould and rotate and carry out two injection molding after first frame 2, second frame 3 and main part 4 form, through the positioning groove 8, the limiting groove 9, the positioning protruding 10 and the auxiliary recess 11 to the outside rubber coating structure 1 are positioned and positioned when two injection molding, the middle frame after two injection molding can carry out internal electronic component installation and enter the next procedure.

[0032] The utility model discloses through adopting the outside rubber coating structure 1 of self -adhesion LSR A B silica gel and setting first attachment groove on first frame 2 and carry out two injection molding, relative to the middle frame forming of current needs through smearing adhesive production, through the change of structure and the temperature of adjusting mould in the process of two injection molding reduces the process of adhesive smearing, has reduced the cost, has promoted the output efficiency simultaneously.

Claims

1. A liquid encapsulated cover, comprising a middle frame and an outer encapsulated structure (1), characterized in that: The outer encapsulation structure (1) is covered on the middle frame through a forming die, the middle frame comprises a first frame (2) and a second frame (3), there is a gap between the first frame (2) and the second frame (3), and the middle frame further comprises a main body (4), the first frame (2) and the second frame (3) are arranged on the main body (4) and are centrally symmetric relative to the main body (4).

2. A liquid encapsulated cap as claimed in claim 1, wherein: A plurality of key concave holes (5) are arranged on the first frame (2) and the second frame (3), a spring sheet (6) is arranged in the key concave hole (5), and a trigger block (7) for triggering the key is arranged on the inner side of the spring sheet (6) and faces the inner side of the main body (4).

3. A liquid encapsulated cap as claimed in claim 2, wherein: A first attachment groove is arranged on the first frame (2) and located on one side of the outermost key concave hole (5), and the first attachment groove is used for limiting and fixing the outer encapsulation structure (1).

4. A liquid encapsulated cap as claimed in claim 3, wherein: The first attachment groove comprises a positioning groove (8) with a smooth curved surface and in a concave shape, and a plurality of limiting grooves (9) for assisting positioning are arranged on the smooth curved surface of the positioning groove (8).

5. A liquid encapsulated cap as claimed in claim 4, wherein: A positioning protrusion (10) is further arranged in the positioning groove (8), the positioning protrusion (10) is inserted into the outer encapsulation structure (1) and is used for fixing the outer encapsulation structure (1).

6. A liquid encapsulated cap as claimed in claim 5, wherein: A plurality of auxiliary grooves (11) are arranged on the main body (4) and located on one side of the second frame (3) and along the edge of the second frame (3), and the outer encapsulation structure (1) is located in the auxiliary groove (11) and is used for positioning the outer encapsulation structure (1).

7. A liquid encapsulated cap as claimed in claim 6, wherein: A connecting groove (12) is arranged on the second frame (3) and is used for connecting the middle frame with an external device.

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