Airtight upper and lower die rubber block jig

Abstract

The utility model relates to an airtight upper and lower die rubber block jig in the technical field of test jigs, which comprises an upper fixed die, a lower fixed die and an inner side sealing assembly, adjacent end faces of the upper fixed die and the lower fixed die are provided with sealing rubber rings, the sealing rubber rings are of frame-shaped structures, the inner side sealing assembly is arranged in the upper fixed die, and the inner side sealing assembly is arranged in the lower fixed die. The inner side sealing assembly comprises a movable pressing block, a first sealing rubber head and a driving part, an inclined wedge face inclining towards the lower portion of the outer side is arranged in the upper fixed die, the movable pressing block is slidably connected to the surface of the inclined wedge face in an abutting mode, the movable pressing block is horizontally pushed through the driving part, and the movable pressing block is driven by the inclined wedge face to move downwards. According to the technical scheme, the first sealing rubber head can be pushed obliquely downwards, so that the first sealing rubber head abuts against the auxiliary hole of the frame to form a closed structure, and air tightness detection is effectively carried out on the inner side of the auxiliary hole of the frame.

Description

Technical Field

[0001] The utility model relates to the technical field of test fixtures, in particular to an airtight upper and lower mold rubber block fixture. Background Art

[0002] The frames of portable devices such as mobile phones, computers, and tablets are generally equipped with process holes such as charging ports and micro-speaker module cavity holes. To ensure product reliability, the product frames need to be tested for airtightness at the process holes.

[0003] The existing airtightness test fixture generally blocks the process holes on the outside of the frame and performs airtightness testing inside the fixture cavity. However, the airtightness testing requirements cannot be met on the inside of the process holes of the frame. Therefore, in response to these current situations, there is an urgent need to develop an airtight upper and lower mold block fixture to meet the needs of actual use. Utility Model Content

[0004] The purpose of the utility model is to provide an airtight upper and lower mold rubber block jig for solving the above-mentioned defects.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] An airtight upper and lower mold rubber block fixture includes an upper fixed mold, a lower fixed mold and an inner sealing assembly, the adjacent end faces of the upper fixed mold and the lower fixed mold are provided with sealing rubber rings, the sealing rubber rings are frame-shaped structures, the sealing rubber rings are respectively located in the upper fixed mold and the lower fixed mold to form an upper cavity and a lower cavity, and the upper fixed mold can abut against the top surface of the lower fixed mold, the inner sealing assembly is arranged inside the upper fixed mold, the inner sealing assembly includes a movable pressure block, a first sealing rubber head and a driving part, the interior of the upper fixed mold is provided with an oblique chiseled surface inclined toward the outside and downward, the movable pressure block can slidably abut against the surface of the oblique chiseled surface, and the first sealing rubber head is fixedly connected to the bottom end of the movable pressure block, and the first sealing rubber head can extend to the bottom of the upper fixed mold, and the end of the movable pressure block away from the first sealing rubber head is horizontally moved by the driving part.

[0007] In the above description, as a further solution, the driving part includes a first cylinder and a pull rod, one end of the pull rod abuts against the end of the movable pressure block, and the other end of the pull rod is fixedly connected to the output shaft of the first cylinder. The movable pressure block can slide on the surface of the bevel surface through the extension and contraction of the pull rod.

[0008] In the above description, as a further solution, a travel cavity is provided inside the movable pressing block, a return spring is provided inside the travel cavity, and one end of the return spring abuts against the surface of the bevel surface.

[0009] In the above description, as a further solution, it also includes an outer sealing assembly. Both ends of the lower fixed mold are provided with outer sealing assemblies. The outer sealing assembly includes a second cylinder, a push plate and a second sealing rubber head. The end of the push plate close to the lower cavity is fixedly connected to the second sealing rubber head, and the output end of the second cylinder is fixedly connected to the end of the push plate away from the second sealing rubber head. The second sealing rubber head can be abutted against one side of the lower cavity through the second cylinder.

[0010] In the above description, as a further solution, the corners of the top surface of the lower fixed mold are provided with upwardly protruding template positioning columns, and the bottom surface of the upper fixed mold is provided with a number of positioning holes matching the template positioning columns. When the upper fixed mold and the lower fixed mold are in contact with each other, the template positioning columns and the positioning holes are plugged and fixed.

[0011] In the above description, as a further solution, a plurality of abutting elastic pins are provided in the upper cavity of the upper fixed mold, and the abutting elastic pins are elastic strip structures.

[0012] In the above description, as a further solution, an air inlet hole is provided inside the lower cavity, and the air inlet hole is connected to the side wall of the lower fixed mold and an air inlet joint is provided.

[0013] The beneficial effects produced by the utility model are as follows:

[0014] The present application provides an airtight upper and lower mold rubber block jig, which can be formed by an inner sealing assembly composed of a movable pressure block, a first sealing rubber head and a driving part inside the upper fixed mold. When the upper fixed mold and the lower fixed mold are closed, the movable pressure block can be pushed horizontally by the driving part. Under the guidance of the bevel surface, the movable pressure block can push the first sealing rubber head obliquely downward, so that the first sealing rubber head abuts against the process hole of the frame, forming a closed structure, thereby effectively performing airtightness detection on the inner side of the process hole of the frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of an airtight upper and lower mold rubber block jig according to the present invention;

[0016] Figure 2 This is a schematic diagram of the structure of an airtight upper and lower mold rubber block fixture described in the present invention;

[0017] Figure 3 This is a schematic structural diagram of the middle and upper fixed mold of the utility model;

[0018] Figure 4 This is a schematic cross-sectional view of an airtight upper and lower mold rubber block jig according to the present invention;

[0019] Figure 5 for Figure 4 A schematic diagram of the partially enlarged structure of the middle part;

[0020] In the figure: 1-upper fixed mold, 11-upper cavity, 12-abutting spring pin, 13-positioning hole, 14-bevel surface, 2-lower fixed mold, 21-lower cavity, 22-air inlet connector, 23-template positioning column, 24-air inlet hole, 3-outer sealing assembly, 31-second cylinder, 32-push plate, 33-second sealing rubber head, 4-inner sealing assembly, 41-first cylinder, 42-pull rod, 43-movable pressure block, 431-stroke cavity, 44-first sealing rubber head, 45-return spring, 5-sealing rubber ring. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the embodiments and drawings. The contents mentioned in the embodiments are not intended to limit the present invention. The present invention is described in detail below in conjunction with the drawings.

[0022] See also Figure 1-5 The specific implementation of the airtight upper and lower mold block fixture includes an upper fixed mold 1, a lower fixed mold 2 and an inner sealing component 4. The adjacent end surfaces of the upper fixed mold 1 and the lower fixed mold 2 are provided with a sealing rubber ring 5. The sealing rubber ring 5 is a frame-shaped structure. The sealing rubber ring 5 is respectively located in the upper fixed mold 1 and the lower fixed mold 2 to form an upper cavity 11 and a lower cavity 21, and the upper fixed mold 1 can abut against the top surface of the lower fixed mold 2. The interior of the lower cavity 21 is provided with an air inlet hole 24, and the air inlet hole 24 is connected to the side wall of the lower fixed mold 2. An air inlet joint 2 is provided. 2. The inner sealing assembly 4 is arranged inside the upper fixed mold 1. The inner sealing assembly 4 includes a movable pressure block 43, a first sealing rubber head 44 and a driving unit. The interior of the upper fixed mold 1 is provided with a bevel surface 14 inclined toward the outside and downward. The movable pressure block 43 can slidably abut against the surface of the bevel surface 14, and the first sealing rubber head 44 is fixedly connected to the bottom end of the movable pressure block 43. The first sealing rubber head 44 can extend to the bottom of the upper fixed mold 1, and the end of the movable pressure block 43 away from the first sealing rubber head 44 is horizontally moved by the driving unit.

[0023] The inner sealing assembly 4 composed of a movable pressure block 43, a first sealing rubber head 44 and a driving part inside the upper fixed mold 1 can be used. When the upper fixed mold 1 and the lower fixed mold 2 are closed, the movable pressure block 43 can be pushed horizontally by the driving part. Under the guidance of the bevel surface 14, the movable pressure block 43 can push the first sealing rubber head 44 obliquely downward, so that the first sealing rubber head 44 abuts against the process hole of the frame, forming a closed structure, thereby effectively performing airtightness detection on the inner side of the process hole of the frame.

[0024] Specifically, such as Figure 5As shown, the driving unit includes a first cylinder 41 and a pull rod 42. One end of the pull rod 42 abuts against the end of a movable pressure block 43, and the other end of the pull rod 42 is fixedly connected to the output shaft of the first cylinder 41. The movable pressure block 43 can slide on the surface of the bevel surface 14 through the extension and contraction of the pull rod 42. A travel cavity 431 is provided inside the movable pressure block 43. A return spring 45 is provided inside the travel cavity 431, and one end of the return spring 45 abuts against the surface of the bevel surface 14. When the first cylinder 41 contracts and resets inward, the elastic stress provided by the compressed return spring 45 causes the movable pressure block 43 to reset upward, causing the first sealing rubber head 44 to move upward and disengage from the frame process hole.

[0025] Preferably, Figure 2-4 As shown, it also includes an outer sealing component 3. Both ends of the lower fixed mold 2 are provided with an outer sealing component 3. The outer sealing component 3 includes a second cylinder 31, a push plate 32 and a second sealing rubber head 33. The end of the push plate 32 close to the lower cavity 21 is fixedly connected to the second sealing rubber head 33, and the output end of the second cylinder 31 is fixedly connected to the end of the push plate 32 away from the second sealing rubber head 33. The second sealing rubber head 33 can be abutted against one side of the lower cavity 21 through the second cylinder 31.

[0026] Specifically, such as Figure 2 and 3 As shown, the corners of the top surface of the lower fixed mold 2 are provided with upwardly protruding template positioning columns 23, and the bottom surface of the upper fixed mold 1 is provided with a plurality of positioning holes 13 that match the template positioning columns 23. When the upper fixed mold 1 and the lower fixed mold 2 are in contact with each other, the template positioning columns 23 are inserted and fixed into the positioning holes 13. A plurality of elastic abutment pins 12 are provided in the upper cavity 11 of the upper fixed mold 1. The abutment pins 12 are elastic strip structures. When the upper fixed mold 1 and the lower fixed mold 2 are separated and demolded, in order to prevent the product from adhering to the interior of the upper cavity 11 due to the pressure of the upper mold, the abutment pins 12 can be used to abut the product downwardly against the interior of the lower cavity 21, effectively preventing the product from falling downward and causing damage when it is attached to the upper cavity 11.

[0027] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention is disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of the above-disclosed technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technology of the present invention, which do not depart from the content of the technical solution of the present invention, are within the scope of the technical solution of the present invention.

Claims

1. An airtight upper and lower mold block fixture, characterized in that: include: An upper fixed mold and a lower fixed mold, wherein the adjacent end surfaces of the upper fixed mold and the lower fixed mold are both provided with sealing rubber rings, the sealing rubber rings are frame-shaped structures, the sealing rubber rings are respectively located in the upper fixed mold and the lower fixed mold to form an upper cavity and a lower cavity, and the upper fixed mold can abut against the top surface of the lower fixed mold; The inner sealing assembly is arranged inside the upper fixed mold, and the inner sealing assembly includes a movable pressure block, a first sealing rubber head and a driving part. The interior of the upper fixed mold is provided with an oblique chisel surface inclined toward the outside and downward. The movable pressure block can slidably abut the surface of the oblique chisel surface, and the first sealing rubber head is fixedly connected to the bottom end of the movable pressure block, and the first sealing rubber head can extend to the bottom of the upper fixed mold. The end of the movable pressure block away from the first sealing rubber head is horizontally moved by the driving part.

2. The airtight upper and lower mold block jig according to claim 1, characterized in that: The driving part includes a first cylinder and a pull rod, one end of the pull rod abuts against the end of the movable pressure block, and the other end of the pull rod is fixedly connected to the output shaft of the first cylinder. The movable pressure block can slide on the surface of the bevel surface through the extension and contraction of the pull rod.

3. The airtight upper and lower mold block jig according to claim 1, characterized in that: A travel cavity is provided inside the movable pressing block, a return spring is provided inside the travel cavity, and one end of the return spring abuts against the surface of the bevel surface.

4. The airtight upper and lower mold block jig according to claim 1, characterized in that: It also includes an outer sealing assembly, and both ends of the lower fixed mold are provided with an outer sealing assembly. The outer sealing assembly includes a second cylinder, a push plate and a second sealing rubber head. The end of the push plate close to the lower cavity is fixedly connected to the second sealing rubber head, and the output end of the second cylinder is fixedly connected to the end of the push plate away from the second sealing rubber head. The second sealing rubber head can be abutted against one side of the lower cavity through the second cylinder.

5. The airtight upper and lower mold block jig according to any one of claims 1 to 4, characterized in that: The corners of the top surface of the lower fixed mold are provided with upwardly protruding template positioning columns, and the bottom surface of the upper fixed mold is provided with a plurality of positioning holes matching the template positioning columns. When the upper fixed mold and the lower fixed mold abut against each other, the template positioning columns and the positioning holes are plugged and fixed.

6. The airtight upper and lower mold block jig according to any one of claims 1 to 4, characterized in that: A plurality of abutting elastic pins are arranged in the upper cavity of the upper fixed mold, and the abutting elastic pins are elastic strip structures.

7. The airtight upper and lower mold block jig according to any one of claims 1 to 4, characterized in that: An air inlet is provided inside the lower cavity, and an air inlet joint is provided on the side wall of the lower fixed mold which is connected to the air inlet.

Images