CN114559603A

CN114559603A - Rubber coating mold and rubber coating process

Info

Publication number: CN114559603A
Application number: CN202210357189.4A
Authority: CN
Inventors: 刘建文
Original assignee: Dongguan Renying Electronic Co ltd
Current assignee: Dongguan Renying Electronic Co ltd
Priority date: 2022-04-07
Filing date: 2022-04-07
Publication date: 2022-05-31

Abstract

The invention relates to a rubber coating mould and a rubber coating process, on the basis of a transfer mould, an upper limit groove and a lower limit groove are arranged, an upper rubber coating mould cavity is arranged on the upper limit groove, a lower rubber coating mould cavity is arranged on the lower limit groove, the upper rubber coating mould cavity and the lower rubber coating mould cavity are combined into a complete rubber coating mould cavity, rubber coating at a position to be rubber coated is realized through the rubber coating mould cavity, an upper rubber coating sheet and a lower rubber coating sheet are used as sealing glue on two end surfaces of the position to be rubber coated, the upper rubber coating sheet and the lower rubber coating sheet are both made of flexible materials, small deformation is generated in the rubber coating process, so that a gap generated in the rubber coating mould cavity after mould assembly is sealed, the rubber coating position is sealed, the defect of rubber overflow is effectively avoided, no excessive rubber overflow exists after production, only material flow needs to be removed after forming, the quality of the rubber coating process is greatly improved, and the step of manually stripping and cleaning waste rubber generated by the rubber overflow is saved, can save a large amount of labor cost and shorten the manufacturing period of products.

Description

Rubber coating mold and rubber coating process

Technical Field

The invention relates to the technical field of encapsulation, in particular to an encapsulation mold and an encapsulation process.

Background

The traditional encapsulation process adopts a direct mold sealing process, and because silica gel is a high-molecular raw material, the mold directly seals the glue to generate gaps so as to overflow the glue, redundant waste glue is generated outside a forming area, and manual stripping is needed. And the traditional rubber coating process adopts a rubber swinging mode for production, and the gap generated in the material swinging production is too large because the material swinging is firstly carried out and then the die assembly is carried out.

Disclosure of Invention

The invention aims to solve the technical problem of the prior art and provides a rubber coating die and a rubber coating process.

In a first aspect, an embodiment of the present invention provides an encapsulation mold for partially encapsulating a product to be encapsulated, including:

the upper die is used for moving up and down relative to the lower die to realize die assembly and die sinking, the upper die is provided with an upper limiting groove, the lower die is provided with a lower limiting groove, the upper limiting groove and the lower limiting groove are combined to realize limiting on a product to be encapsulated, an upper encapsulating die cavity is arranged in the upper limiting groove, a lower encapsulating die cavity is arranged in the lower limiting groove, and the upper encapsulating die cavity and the lower encapsulating die cavity are combined to encapsulate the position to be encapsulated on the product to be encapsulated;

the upper sealing rubber sheet is detachably arranged on two end sides of the upper sealing rubber cavity and is used as two end walls of the upper sealing rubber cavity, and the upper sealing rubber sheet is provided with an upper trepanning matched with the appearance of a product to be encapsulated;

the lower rubber sealing sheet is detachably arranged on two end sides of the lower rubber coating die cavity and is used as two end walls of the upper rubber coating die cavity, and the lower rubber sealing sheet is provided with a lower sleeve hole matched with the appearance of a product to be rubber coated;

wherein, the upper rubber sealing sheet and the lower rubber sealing sheet are made of elastic soft rubber materials.

In some of the embodiments, the upper limiting groove is provided with a first groove and a second groove, the first groove is positioned on one end side of the upper encapsulation die cavity, and the second groove is positioned on the other end side of the upper encapsulation die cavity; the upper sealing glue sheet is arranged in the first groove and the second groove.

In some of the embodiments, the lower limiting groove is provided with a third groove and a fourth groove, the third groove is positioned at one end side of the lower encapsulation die cavity, and the fourth groove is positioned at the other end side of the lower encapsulation die cavity; the lower sealing glue piece is arranged in the third groove and the fourth groove.

In some embodiments, the parting surface of the lower die is provided with a first runner extending to the lower rubber coating die cavity, the upper die is provided with a transfer feeding groove, and the transfer feeding groove is provided with a runner hole communicated with the first runner.

In some embodiments, a pressure plate is arranged above the upper die, and the pressure plate is provided with a pressure part for pressing the coating material in the transfer feeding groove out to the runner hole.

In some embodiments, the upper film sealing piece and the lower film sealing piece are made of plastic materials.

In some embodiments, the lower die is provided with a positioning block, and the upper die is provided with a positioning groove which is in concave-convex embedded positioning with the positioning block.

In a second aspect, embodiments of the present invention provide an encapsulation process, which includes the following steps:

step 1, assembling an upper sealing glue sheet to an upper die, and assembling a lower sealing glue sheet to a lower die;

step 2, placing a product to be encapsulated in a lower limiting groove;

and 3, controlling the upper die and the lower die to be matched, injecting a high polymer adhesive material after the upper die and the lower die are matched, and enabling the high polymer adhesive material to enter a rubber coating die cavity formed by combining an upper rubber coating die cavity and a lower rubber coating die cavity through a first flow channel, so that a rubber coating part is formed on the surface of a product to be coated with rubber.

In some embodiments, in step 3, the pressing plate presses down to transfer the polymer adhesive to the first flow channel.

Compared with the related technology, the rubber coating die and the rubber coating process provided by the embodiment of the invention have the advantages that on the basis of a transfer die, an upper limiting groove and a lower limiting groove are arranged, an upper rubber coating die cavity is arranged on the upper limiting groove, a lower rubber coating die cavity is arranged on the lower limiting groove, the upper rubber coating die cavity and the lower rubber coating die cavity are combined into a complete rubber coating die cavity, the rubber coating of a position to be rubber coated is realized through the rubber coating die cavity, an upper rubber sealing sheet and a lower rubber sealing sheet are used as sealing glue on two end surfaces of the position to be rubber coated, the upper rubber sealing sheet and the lower rubber sealing sheet are both made of flexible materials, the softness and the elasticity of the upper rubber sealing sheet and the lower rubber sealing sheet generate small deformation in the rubber coating process so as to seal gaps generated in the rubber coating die cavity after die assembly, the rubber coating position is sealed, the defect of rubber overflow is effectively avoided, no redundant rubber overflow is generated after production, and the flow materials are only required to be removed after the forming, greatly improves the quality of the rubber coating process, saves the step of manually stripping and cleaning the waste rubber generated by the overflowing rubber, can save a large amount of labor cost and shortens the manufacturing period of the product.

The details of one or more embodiments of the invention are set forth in the accompanying drawings and the description below to provide a more thorough understanding of the invention.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not limit the invention. In the drawings:

figure 1 is a block diagram of a product to be encapsulated according to an embodiment of the invention.

Fig. 2 is a mold closing structure diagram of the encapsulating mold according to the embodiment of the present invention.

Fig. 3 is a cross-sectional view of the mold closing of the encapsulating mold according to the embodiment of the present invention.

Fig. 4 is a structural view of the encapsulating mold according to the embodiment of the present invention before closing the mold.

Fig. 5 is a structural view of a lower mold of the encapsulating mold according to the embodiment of the present invention.

Fig. 6 is a structural view of an upper die of the encapsulating die of the embodiment of the present invention.

Fig. 7 is a structural view of an upper sealing sheet of the encapsulating mold according to the embodiment of the present invention.

Fig. 8 is a structural view of a lower stripper sheet of the encapsulation die according to an embodiment of the present invention.

In the figure, 1, the product to be encapsulated; 2. an upper die; 3. a lower die; 4. a material pressing plate; 5. sealing a film; 6. a lower sealing film; 7. a glue coating part; 8. an upper limiting groove; 9. a lower limiting groove; 10. an upper encapsulation die cavity; 11. a lower encapsulation die cavity; 12. sleeving a hole; 13. a lower trepanning; 14. a first groove; 15. a second groove; 16. a third groove; 17. a fourth groove; 18. a first flow passage; 19. transferring a feeding groove; 20. a flow passage hole; 21. a material pressing part; 22. an exhaust groove; 23. positioning blocks; 24. and (6) positioning a groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments provided by the present invention, belong to the protection scope of the present invention. Moreover, it should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one of ordinary skill in the art that the described embodiments of the present invention can be combined with other embodiments without conflict.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of the terms "a" and "an" and "the" and similar referents in the context of describing the invention are not to be construed as limiting in number, and may be construed to cover both the singular and the plural. The present invention relates to the terms "comprises," "comprising," "includes," "including," "has," "having" and any variations thereof, which are intended to cover non-exclusive inclusions; for example, a process, method, system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to the listed steps or elements, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. The terms "connected," "coupled," and the like in the description of the invention are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The term "plurality" as used herein means two or more. "and/or" describes an association relationship of associated objects, meaning that three relationships may exist, for example, "A and/or B" may mean: a exists alone, A and B exist simultaneously, and B exists alone. The terms "first," "second," "third," and the like in reference to the present invention are used merely to distinguish between similar objects and not necessarily to represent a particular ordering for the objects.

As shown in fig. 1 to 8, an embodiment of the present invention provides an encapsulation mold, which is used for partially encapsulating a product 1 to be encapsulated, and includes an upper mold 2, a lower mold 3, a pressure plate 4, an upper encapsulation sheet 5, and a lower encapsulation sheet 6. The product 1 to be encapsulated is roughly cylindrical, a position to be encapsulated is arranged in the middle of the product 1 to be encapsulated in the circumferential direction, and an encapsulating part 7 is formed after the position to be encapsulated is encapsulated.

As shown in fig. 1 to 8, the lower mold 3 of the present embodiment is fixed in position, and the upper mold 2 is driven by a power source to move up and down relative to the lower mold 3 to perform mold closing and mold opening. Wherein, go up the bottom surface of mould 2 and be provided with spacing groove 8 on, the top surface of lower mould 3 is provided with spacing groove 9 down, goes up spacing groove 8 and makes up into complete spacing groove with spacing groove 9 down and realize spacingly in order to be used for treating rubber coating product 1. An upper rubber coating die cavity 10 is arranged in the middle of the upper limiting groove 8, a lower rubber coating die cavity 11 is arranged in the middle of the lower limiting groove 9, and the upper rubber coating die cavity 10 and the lower rubber coating die cavity 11 are combined into a complete rubber coating die cavity for rubber coating of a to-be-rubber-coated position on a to-be-rubber-coated product 1.

As shown in fig. 1 to 8, the upper encapsulant sheet 5 of the present embodiment is detachably disposed on two end sides of the upper encapsulant cavity 10 to serve as two end walls of the upper encapsulant cavity 10, and the upper encapsulant sheet 5 has an upper trepanning 12 matching with the exterior of the product 1 to be encapsulated. And the lower sealing glue sheet 6 is detachably arranged on two end sides of the lower sealing glue die cavity 11 to be used as two end walls of the upper sealing glue die cavity 10, and the lower sealing glue sheet 6 is provided with a lower sleeve hole 13 matched with the appearance of the product 1 to be encapsulated. The upper sealing glue sheet 5 and the lower sealing glue sheet 6 are made of elastic soft glue materials, in particular plastic glue materials. Because the upper sealing glue sheet 5 and the lower sealing glue sheet 6 have elasticity, the two end sides of the rubber coating die cavity can be better sealed, and the sealing glue treatment on the two end sides of the rubber coating die cavity is realized. And after the upper rubber sealing sheet 5 and the lower rubber sealing sheet 6 are assembled in place, the rubber sealing sheets can be firmly assembled in place due to the elastic characteristic, the situation that the rubber sealing sheets fall off from the upper limiting groove 8 and the lower limiting groove 9 cannot easily occur, the stability of the rubber sealing environment is ensured, and the reliability and the stability of rubber sealing are improved.

As shown in fig. 1 to 8, in order to realize the detachable implementation of the upper encapsulant sheet 5 and the lower encapsulant sheet 6, a first groove 14 and a second groove 15 are disposed in the upper limiting groove 8, the first groove 14 is located at one end side of the upper encapsulant cavity 10, the second groove 15 is located at the other end side of the upper encapsulant cavity 10, and the upper encapsulant sheet 5 is disposed in the first groove 14 and the second groove 15. And a third groove 16 and a fourth groove 17 are arranged in the lower limiting groove 9, the third groove 16 is positioned at one end side of the lower encapsulation die cavity 11, the fourth groove 17 is positioned at the other end side of the lower encapsulation die cavity 11, and the lower encapsulation sheet 6 is arranged in the third groove 16 and the fourth groove 17. The upper sealing glue sheet 5 and the lower sealing glue sheet 6 are detachably arranged in the grooves at the two end sides of the rubber coating die cavity, so that sealing glue at the two end sides of the rubber coating die cavity is realized, and the condition that glue is easy to overflow in the prior art is effectively avoided.

As shown in fig. 1 to 8, the parting surface of the lower mold 3 of the present embodiment is provided with a first runner 18 extending to the lower encapsulating mold cavity 11, the upper mold 2 is provided with a transfer charge chute 19, and the transfer charge chute 19 is provided with a runner hole 20 communicating with the first runner 18. A pressure plate 4 is disposed above the upper die 2, and the pressure plate 4 is provided with a pressure portion 21 for pressing the coating material in the transfer chute 19 toward the runner hole 20. As shown in the figure, an exhaust groove 22 for exhausting is arranged between the lower encapsulation cavity 11 and the edge of the lower die 3, and is used for extruding the air in the encapsulation cavity to be exhausted out of the die along the exhaust groove 22 after the encapsulation enters the encapsulation cavity from the runner hole 20 and the first runner 18.

As shown in fig. 1 to 8, the lower mold 3 of the present embodiment is provided with a positioning block 23, and the upper mold 2 is provided with a positioning groove 24 that is in concave-convex embedded positioning with the positioning block 23, so as to realize accurate alignment of the upper positioning groove 8 and the lower positioning groove 9, further realize accurate alignment of the upper rubber coating mold cavity 10 and the lower rubber coating mold cavity 11, and improve the accuracy of rubber coating.

The embodiment of the invention provides a rubber coating process, which comprises the following steps:

step 1, assembling an upper sealing glue sheet 5 to an upper die 2, and assembling a lower sealing glue sheet 6 to a lower die 3. Specifically, an upper sealing glue sheet 5 is placed in the first groove 14, another upper sealing glue sheet 5 is placed in the second groove 15, a lower sealing glue sheet 6 is placed in the third groove 16, and another lower sealing glue sheet 6 is placed in the fourth groove 17, and since the upper sealing glue sheet 5 and the lower sealing glue sheet 6 are made of elastic plastic materials, the upper sealing glue sheet and the lower sealing glue sheet can be stably assembled in the grooves and cannot easily fall off. In another embodiment, the upper sealing rubber sheet is not pre-assembled in the upper die, but the upper sealing rubber sheet is directly sleeved on the product to be encapsulated after the product to be encapsulated is placed, and the upper sealing rubber sheet is pre-positioned by using the third groove and the fourth groove, so that the upper sealing rubber sheet and the lower sealing rubber sheet can be completely spliced, and the sealing reliability is improved.

Step 2, placing the product 1 to be encapsulated in the lower limiting groove 9, after the product 1 to be encapsulated is placed in place in the lower limiting groove 9, the lower sleeve hole 13 of the lower encapsulating sheet 6 has elasticity, and the lower sleeve hole 13 is fixedly sleeved on the product 1 to be encapsulated under the assembly that the lower encapsulating sheet 6 is stably fixed in the lower limiting groove 9, namely the lower sleeve hole 13 is in close contact with the surface of the product 1 to be encapsulated.

And 3, controlling the upper die 2 to descend to be matched with the lower die 3, after the die is matched, sleeving an upper sleeving hole 12 of an upper rubber sealing sheet 5 on the product 1 to be encapsulated and tightly contacting the surface of the product 1 to be encapsulated, combining the upper sleeving hole 12 and a lower sleeving hole 13 into a complete sleeving hole which completely surrounds the periphery of the product 1 to be encapsulated, namely completely surrounding the periphery of the product 1 to be encapsulated by the upper rubber sealing sheet 5 and the lower rubber sealing sheet 6, and combining the upper rubber sealing sheet 5 and the lower rubber sealing sheet 6 with an upper rubber sealing die cavity 10 and a lower rubber sealing die cavity 11 into a relatively sealed rubber sealing die cavity (two end sides are sealed). After the die assembly, a high polymer glue material, namely the rubber coating material, is injected, the pressure plate 4 is pressed down to transfer and inject the high polymer glue material to the first flow channel 18, the high polymer glue material enters the rubber coating die cavity formed by combining the upper rubber coating die cavity 10 and the lower rubber coating die cavity 11 through the first flow channel 18, and therefore a rubber coating part 7 is formed on the surface of a product 1 to be rubber coated.

Compared with the prior art, the rubber coating die and the rubber coating process provided by the embodiment of the invention have the advantages that on the basis of a transfer die, an upper limiting groove 8 and a lower limiting groove 9 are arranged, an upper rubber coating die cavity 10 is arranged on the upper limiting groove 8, a lower rubber coating die cavity 11 is arranged on the lower limiting groove 9, the upper rubber coating die cavity 10 and the lower rubber coating die cavity 11 are combined into a complete rubber coating die cavity, rubber coating at a position to be rubber coated is realized through the rubber coating die cavity, an upper rubber coating sheet 5 and a lower rubber coating sheet 6 are used as sealing rubber for two end faces of the position to be rubber coated, the upper rubber coating sheet 5 and the lower rubber coating sheet 6 are both made of flexible materials, and the flexibility and the elasticity of the upper rubber coating sheet 5 and the lower rubber coating sheet generate small amount of deformation in the rubber coating process so as to seal gaps of the rubber coating die cavity after die assembly, thereby realizing the sealing of the rubber coating position, effectively avoiding the defect of rubber overflow, and having no redundant rubber overflow after production, after the molding, only the flowing materials need to be removed, so that the quality of the rubber coating process is greatly improved, the steps of manually stripping and cleaning the waste rubber generated by the overflowing rubber are saved, a large amount of labor cost can be saved, and the manufacturing period of the product is shortened.

It should be understood by those skilled in the art that various features of the above-described embodiments can be combined in any combination, and for the sake of brevity, all possible combinations of features in the above-described embodiments are not described in detail, but rather, all combinations of features which are not inconsistent with each other should be construed as being within the scope of the present disclosure.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An encapsulation die, for the local encapsulation of a product (1) to be encapsulated, comprising:

the rubber coating device comprises an upper die (2) and a lower die (3), wherein the upper die (2) is used for moving up and down relative to the lower die (3) to realize die assembly and die opening, the upper die (2) is provided with an upper limiting groove (8), the lower die (3) is provided with a lower limiting groove (9), the upper limiting groove (8) and the lower limiting groove (9) are combined to limit a product (1) to be coated, an upper rubber coating die cavity (10) is arranged in the upper limiting groove (8), a lower rubber coating die cavity (11) is arranged in the lower limiting groove (9), and the upper rubber coating die cavity (10) and the lower rubber coating die cavity (11) are combined to coat a position to be coated on the product (1) to be coated;

the upper encapsulating rubber sheet (5) is detachably arranged on two end sides of the upper encapsulating die cavity (10) to serve as two end walls of the upper encapsulating die cavity (10), and the upper encapsulating rubber sheet (5) is provided with an upper trepanning hole (12) matched with the appearance of the product (1) to be encapsulated;

the lower rubber sealing sheet (6) is detachably arranged on two end sides of the lower rubber sealing die cavity (11) to serve as two end walls of the upper rubber sealing die cavity (10), and the lower rubber sealing sheet (6) is provided with a lower sleeve hole (13) matched with the appearance of the product (1) to be rubber sealed;

wherein, the upper rubber sealing sheet (5) and the lower rubber sealing sheet (6) are made of elastic soft rubber materials.

2. An encapsulating die according to claim 1, characterized in that said upper limiting groove (8) is provided with a first groove (14) and a second groove (15), said first groove (14) being located at one end side of said upper encapsulating die cavity (10), said second groove (15) being located at the other end side of said upper encapsulating die cavity (10); the upper rubber sealing sheet (5) is arranged in the first groove (14) and the second groove (15).

3. An encapsulation die according to claim 2, wherein the lower limit groove (9) is provided with a third groove (16) and a fourth groove (17), the third groove (16) being located at one end side of the lower encapsulation cavity (11), the fourth groove (17) being located at the other end side of the lower encapsulation cavity (11); the lower rubber sealing sheet (6) is arranged in the third groove (16) and the fourth groove (17).

4. The overmold according to claim 1, wherein the parting surface of the lower mold (3) is provided with a first runner (18) extending to the lower overmold cavity (11), the upper mold (2) is provided with a transfer charge slot (19), and the transfer charge slot (19) is provided with a runner hole (20) communicating with the first runner (18).

5. The overmold according to claim 4, wherein a blank holder (4) is disposed above the upper mold (2), and the blank holder (4) is provided with a blank holder (21) for pressing the overmold material in the transfer chute (19) toward the runner hole (20).

6. The encapsulation die according to claim 1, wherein the upper encapsulating sheet (5) and the lower encapsulating sheet (6) are made of plastic.

7. The encapsulation mold according to claim 1, wherein the lower mold (3) is provided with a positioning block (23), and the upper mold (2) is provided with a positioning groove (24) which is in concave-convex fit positioning with the positioning block (23).

8. A process for encapsulating a rubber coating, comprising the steps of:

step 1, assembling an upper sealing rubber sheet (5) to an upper die (2), and assembling a lower sealing rubber sheet (6) to a lower die (3);

step 2, placing the product (1) to be encapsulated in a lower limiting groove (9);

and 3, controlling the upper die (2) and the lower die (3) to be matched, injecting a high polymer adhesive material after the upper die and the lower die are matched, and enabling the high polymer adhesive material to enter a rubber coating die cavity formed by combining an upper rubber coating die cavity (10) and a lower rubber coating die cavity (11) through a first runner (18), so that a rubber coating part (7) is formed on the surface of the product (1) to be coated with rubber.

9. An encapsulation process according to claim 8, wherein in step 3, the pressure plate (4) presses down to transfer the polymer material to the first runner (18).