A fixture for testing the sealing of workpieces

Abstract

The present application provides a jig for testing the sealing of a workpiece, the jig comprising a base assembly, the base assembly comprising a base and a support plate, the support plate being spaced apart on the base and used for carrying the workpiece; a cover plate assembly, the cover plate assembly being connected to a side of the support plate away from the base and forming a pressing space for pressing the workpiece with the support plate; a driving member and a first sealing member, the driving member being connected to a side of the base close to the support plate, the first sealing member having a first sealing surface, a second sealing surface and a third sealing surface, the first sealing surface and the second sealing surface both forming a step perpendicular to the third sealing surface, the driving member being able to drive the first sealing member to move in a set direction so that the first sealing member seals the first port of the workpiece, thereby ensuring a better seal on the workpiece and a better airtightness test effect, thereby improving the yield of the product.

Description

Technical Field

[0001] The present application belongs to the technical field of testing devices, and specifically, relates to a fixture for testing the sealing of a workpiece. Background Art

[0002] The cavity in the workpiece has different functions. Poor airtightness of the cavity will eventually lead to a decline in product quality. Therefore, the sealing test of the cavity becomes more and more important. Take the sealing test of the earpiece in the mobile phone frame as an example. The sealing surface of the earpiece position involves multiple directions and it is difficult to test it separately.

[0003] Therefore, the problem of poor airtightness of the earpiece cavity on the middle frame can often only be identified during the assembly process of the whole machine, which not only increases the difficulty of cavity sealing testing, but also affects the efficiency of the whole machine assembly and the product yield. Summary of the invention

[0004] One purpose of the present application is to provide a new technical solution for a fixture for testing the sealing of a workpiece.

[0005] According to a first aspect of the present application, a jig for testing the sealing of a workpiece is provided, comprising:

[0006] A base assembly, the base assembly comprising a base and a support plate, the support plate being spaced apart on the base and used to carry a workpiece;

[0007] A cover plate assembly, the cover plate assembly is connected to a side of the support plate away from the base and forms a pressing space between the cover plate and the support plate for pressing the workpiece;

[0008] A driving member and a first sealing member, wherein the driving member is connected to a side of the base close to the support plate, the first sealing member has a first sealing surface, a second sealing surface and a third sealing surface, the first sealing surface and the second sealing surface both form steps perpendicular to the third sealing surface, and the driving member can drive the first sealing member to move along a set direction so that the first sealing member seals the first port of the workpiece.

[0009] Optionally, the first port includes a first sealing surface, a second sealing surface and a third sealing surface, and the first sealing surface and the second sealing surface both form a step perpendicular to the third sealing surface; the first blocking surface is used to block the first sealing surface, the second sealing surface is used to block the second sealing surface, and the third blocking surface is used to block the third sealing surface.

[0010] Optionally, the first blocking surface, the second blocking surface, the first sealing surface and the second sealing surface are parallel to each other, and the third blocking surface and the third sealing surface are parallel to each other;

[0011] The included angles formed by the set direction and the first blocking surface, the second blocking surface and the third blocking surface are all 45°.

[0012] Optionally, the first blocking member includes a plurality of the second blocking surfaces arranged in staggered layers, and a plurality of the third blocking surfaces arranged in staggered layers, wherein the plurality of the second blocking surfaces and the plurality of the third blocking surfaces are sequentially staggered and connected to form a plurality of steps;

[0013] The first port comprises a plurality of the second sealing surfaces arranged in staggered layers and a plurality of the third sealing surfaces arranged in staggered layers, wherein the plurality of the second sealing surfaces and the plurality of the third sealing surfaces are sequentially staggered and connected to form a plurality of steps;

[0014] The plurality of second blocking surfaces are respectively used to block the corresponding plurality of second sealing surfaces, and the plurality of third blocking surfaces are respectively used to block the corresponding plurality of third sealing surfaces.

[0015] Optionally, the driving member comprises a cylinder and a driving seat, and the driving seat is arranged at the driving end of the cylinder;

[0016] The driving seat is provided with a limiting groove, the first blocking member comprises a limiting portion and a blocking portion, the limiting portion is provided in the limiting groove, and the blocking portion has the first blocking surface, the second blocking surface and the third blocking surface;

[0017] The base is provided with an inclined surface extending along the set direction, and the cylinder is connected to the inclined surface.

[0018] Optionally, the support plate has a channel, and when the jig seals the workpiece, the first port of the workpiece is placed on the support plate relative to the channel, and the driving member can drive the first blocking member to penetrate the channel along the set direction to block the first port through the first blocking member.

[0019] Optionally, the cover plate assembly includes a cover plate and a second blocking member, wherein the second blocking member is disposed on a side of the cover plate close to the support plate and is used to block a second port of the upper cavity of the workpiece;

[0020] The first port is connected to the second port, the first port is arranged on the first surface of the workpiece, and the second port is arranged on the second surface of the workpiece.

[0021] Optionally, the first blocking member, the cavity on the workpiece and the second blocking member form a sealed cavity, the cover plate is provided with an air nozzle, the second blocking member has an air vent, and the air nozzle is connected to the sealed cavity through the air vent.

[0022] Optionally, the cover plate assembly further includes an upper support rod, wherein the upper support rod is connected between the cover plate and the support plate, and the height of the upper support rod matches the height of the pressing space.

[0023] Optionally, the cover plate assembly further comprises a pressing block, which is located on a side of the cover plate close to the support plate and is used to abut against a workpiece.

[0024] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0026] Figure 1 A schematic diagram of a jig for testing the sealing of a workpiece provided in one embodiment of the present application;

[0027] Figure 2 An exploded view of a fixture for testing the sealing of a workpiece provided in one embodiment of the present application;

[0028] Figure 3 A schematic diagram of a first sealing member of a jig for testing the sealing performance of a workpiece provided by one embodiment of the present application;

[0029] Figure 4 A schematic diagram of the cooperation between a first sealing member and a workpiece of a jig for testing the sealing performance of a workpiece provided by one embodiment of the present application;

[0030] Figure 5 for Figure 4 The enlarged view of point B in the middle;

[0031] Figure 6 A front view of a first sealing member of a jig for testing the sealing of a workpiece provided by one embodiment of the present application and the workpiece in cooperation with each other;

[0032] Figure 7 for Figure 6 Cross-section view of the AA surface;

[0033] Figure 8 for Figure 7 Enlarged view of point C in the middle;

[0034] Fig. 9 A schematic diagram of a second blocking member of a jig for testing the sealing of a workpiece provided by one embodiment of the present application;

[0035] Fig.10A schematic diagram of a workpiece of a jig for testing the sealing of a workpiece provided in one embodiment of the present application Figure 1 ;

[0036] Fig.11 for Fig.10 The enlarged view of point D in the middle;

[0037] Fig.12 A workpiece diagram of a jig for testing the sealing of a workpiece provided in one embodiment of the present application Figure 2 ;

[0038] Fig.13 A schematic diagram of testing the sealing performance of a workpiece provided by an embodiment of the present application;

[0039] Fig.14 for Fig.13 Enlarged view of point A in the middle.

[0040] in:

[0041] 1. Base assembly; 11. Base; 111. Inclined surface; 112. Avoidance hole; 12. Support plate; 121. Channel; 122. Positioning column; 13. Lower support rod;

[0042] 2. Cover plate assembly; 21. Cover plate; 211. Air nozzle; 22. Second blocking member; 221. Air vent; 23. Upper support rod; 24. Press block;

[0043] 3. Driving member; 31. Cylinder; 32. Driving seat;

[0044] 4. First blocking member; 41. Transverse blocking surface; 411. First blocking surface; 412. Second blocking surface; 42. Third blocking surface;

[0045] 100, workpiece; 101, first port; 1011, first sealing surface; 1012, second sealing surface; 1013, third sealing surface; 102, second port. DETAILED DESCRIPTION

[0046] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0047] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be understood as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0048] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this application, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0049] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0050] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0051] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0052] The embodiment of the present application provides a jig for testing the sealing of a workpiece. The cavity in the workpiece can provide an airflow channel for the workpiece. In order to ensure the sealing of the airflow channel, it is necessary to test the sealing of the cavity in the workpiece. However, the port of the cavity involves sealing surfaces in multiple directions, which increases the difficulty of sealing the port of the cavity. The jig provided in the embodiment of the present application can block the port of the workpiece through the sealing surface formed by the step surface structure to test a separate workpiece, thereby ensuring the sealing effect of the port of the cavity.

[0053] In some embodiments, reference Figure 1 , Figure 2 and Figure 8 The jig for testing the sealing property of a workpiece provided in the embodiment of the present application includes:

[0054] A base assembly 1, the base assembly comprises a base 11 and a support plate 12, the support plate 12 is arranged on the base 11 at intervals and is used to carry a workpiece 100;

[0055] A cover plate assembly 2, which is connected to a side of the support plate 12 away from the base 11 and forms a pressing space for pressing the workpiece 100 between the cover plate assembly 2 and the support plate 12;

[0056] A driving member 3 and a first blocking member 4, the driving member 3 is connected to the side of the base 11 close to the support plate 12, the first blocking member 4 has a first blocking surface 411, a second blocking surface 412 and a third blocking surface 42, the first blocking surface 411 and the second blocking surface 412 are both perpendicular to the third blocking surface to form a step, the driving member 3 can drive the first blocking member 4 to move along the set direction so that the first blocking member 4 blocks the first port 101 of the workpiece 100.

[0057] In this embodiment, the base assembly 1 serves as a supporting frame of the entire fixture, can be used to connect the cover assembly 2, the driving member 3 and the first blocking member 4, and can carry the workpiece 100 to ensure that the entire fixture remains stable during the sealing test.

[0058] In one embodiment, a receiving platform and a positioning column 122 are provided on the support plate 12. The receiving platform is used to support the workpiece 100. The positioning column 122 is plugged into the positioning hole on the workpiece 100 to position the workpiece 100 up, down, left and right. At the same time, the cover plate assembly 2 and the support plate 12 press the workpiece 100 to ensure the structural stability of the workpiece 100 during the air tightness test, which facilitates the alignment of the first sealing member 4 with the sealing surface of the workpiece 100 during the test.

[0059] In one embodiment, the workpiece 100 may be a middle frame, which has a cavity for sound transmission. The sound transmission cavity is directly connected to the outside world in the formed electronic device, so the sound transmission cavity needs to have good sealing properties to achieve waterproof and dustproof effects. The first blocking member 4 can be aligned with the port sealing surface on the sound transmission cavity of the middle frame to ensure the sealing effect of the middle frame during the sealing test, thereby improving the accuracy and convenience of the sealing test of the middle frame.

[0060] In one embodiment, the cavity in the workpiece 100 has a first port 101, and there are sealing surfaces with different orientations at the first port 101. In the fixture provided in the embodiment of the present application, the first blocking member 4 has a first blocking surface 411, a second blocking surface 412 and a third blocking surface 42, and the first blocking surface 411 and the second blocking surface 412 are both perpendicular to the third blocking surface to form a step, that is, the first blocking surface 411 and the second blocking surface 412 are parallel to each other, and at the same time, the first blocking surface 411 and the second blocking surface 412 are in a different orientation from the third blocking surface, and the driving member 3 can drive the first blocking member 4 to move in a set direction, for example, the driving member 3 drives the first blocking member 4 to move in a direction that is an acute angle to the first blocking surface 411, the second blocking surface 412 and the third blocking surface, so that the first blocking member 4 is close to the first port by an oblique push, such as Fig.13 and Fig.14 As shown, the first blocking member 4 can simultaneously apply force to the sealing surfaces in different directions on the first port 101, thereby achieving full blocking of the first port 101 of the workpiece 100 by the first blocking member 4, ensuring that the air tightness test of the workpiece by the fixture is more accurate.

[0061] In one embodiment, sealing surfaces in different directions on the first sealing member 4 correspond to sealing surfaces in different directions on the first port 101, and each sealing surface is interference fit with the corresponding sealing surface to ensure the sealing effect of the cavity on the workpiece 100 when performing a sealing test on the workpiece 100 separately.

[0062] In one embodiment, from Figure 1 From the perspective of , left and right are horizontal, and up and down are vertical, the first sealing surface 411 and the second sealing surface 412 are parallel to each other and form a horizontal sealing surface 41, and the third sealing surface 42 forms a vertical sealing surface, and the horizontal sealing surface 41 and the vertical sealing surface are both at an angle to the set direction. When the driving member 3 drives the first blocking member 4 to move along the set direction, it is convenient for the first blocking member 4 to block the horizontal sealing surface on the first port 101 through the horizontal blocking surface 41, and the vertical sealing surface blocks the vertical sealing surface on the first port 101.

[0063] It should be noted that the first blocking member 4 is a contoured blocking member, that is, it is made to conform to the structure of the port of the workpiece to be blocked by the first blocking member 4. However, it is understandable that in the actual manufacturing process of the first blocking member 4, there will be errors in the structural shape of the first blocking member 4.

[0064] In the fixture for testing the sealing of a workpiece provided in the embodiment of the present application, the driving member 3 can drive the first sealing member 4 to move along the set direction so that the first sealing member 4 simultaneously blocks the sealing surfaces in different directions on the first port 101, thereby achieving the sealing of the first port 101 of the workpiece 100 by the first sealing member 4, thereby ensuring the airtight effect of the airtightness test of the workpiece 100, reducing the difficulty of the airtightness test of the workpiece 100, and ensuring the yield rate of the workpiece for the whole machine assembly.

[0065] In some embodiments, reference Figures 6 to 8 , Fig.10 and Fig.11 The first port 101 includes a first sealing surface 1011, a second sealing surface 1012 and a third sealing surface 1013. The first sealing surface 1011 and the second sealing surface 1012 are perpendicular to the third sealing surface 1013 to form a step; the first blocking surface 411 is used to block the first sealing surface, the second blocking surface 412 is used to block the second sealing surface, and the third blocking surface 42 is used to block the third sealing surface.

[0066] In this embodiment, the first blocking surface 411 and the second blocking surface 412 of the first blocking member 4 are both perpendicular to the third blocking surface to form a step-shaped blocking step; the first sealing surface 1011 and the second sealing surface 1012 of the first port 101 are both perpendicular to the third sealing surface 1013 to form a step-shaped sealing step. When the driving member 3 drives the first blocking member 4 to move toward the first port 101 along a set direction, the multiple blocking surfaces of the blocking step can contact with the multiple sealing surfaces of the sealing step, so that the first blocking surface 411 blocks the first sealing surface, the second blocking surface 412 blocks the second sealing surface, and the third blocking surface 42 blocks the third sealing surface. The multi-faceted sealing of the sealing step at the first port 101 by the first sealing member 4 ensures the sealing effect of the cavity in the workpiece 100 that is connected to the first port 101, that is, when the first sealing member 4 moves along the set direction relying on the driving member 3, the first sealing surface 411, the second sealing surface 412 and the third sealing surface 42 are all subjected to the driving force of the driving member and also generate forces, and apply the forces to the first sealing surface, the second sealing surface and the third sealing surface one by one, and fit with each sealing surface one by one, thereby realizing the multi-faceted sealing of the sealing step at the first port 101 by the first sealing member 4 and ensuring the accuracy of the sealing test.

[0067] In some embodiments, reference Figures 3 to 5 and Fig.13 , the first blocking surface 411, the second blocking surface 412, the first sealing surface and the second sealing surface are parallel to each other, and the third blocking surface 42 and the third sealing surface are parallel to each other;

[0068] The included angles formed by the set direction, the first blocking surface 411, the second blocking surface 412 and the third blocking surface are all 45°.

[0069] In this embodiment, when the sealing of the cavity in the workpiece 100 is tested, since the first blocking surface 411 is parallel to the first sealing surface, the second blocking surface 412 is parallel to the second sealing surface, and the third blocking surface 42 is parallel to the third sealing surface; the angle between the direction and the first blocking surface 411 and the second blocking surface 412 is set to 45°, and the angle between the direction and the third blocking surface is set to 45°, the first blocking surface 411 and the first sealing surface can be made parallel to each other, and the second blocking surface 412 and the second sealing surface can be made parallel to each other. While the covers are parallel to each other, the third sealing surface 42 and the third sealing surface are parallel to each other; so that the first sealing surface 411 blocks the first sealing surface, the second sealing surface 412 blocks the second sealing surface, and the third sealing surface 42 blocks the third sealing surface; moreover, the force of obliquely pushing the first sealing member 4 can be evenly distributed to the transverse sealing surface formed by the first sealing surface 411 and the second sealing surface 412 and the vertical sealing surface formed by the third sealing surface, thereby ensuring the multi-sided sealing effect of the first sealing member 4 on the sealing step at the first port 101.

[0070] In other embodiments, the angle formed by the setting direction and the first sealing surface 411 and the second sealing surface 412 can be 15°, 30°, 60° or 75°. Correspondingly, the angle formed by the setting direction and the third sealing surface is 75°, 60°, 30° or 15°. Similarly, the first sealing member 4 can be approached to the first port by oblique pushing, and at the same time, the first sealing surface 411 blocks the first sealing surface, the second sealing surface 412 blocks the second sealing surface, and the third sealing surface 42 blocks the third sealing surface.

[0071] In some embodiments, reference Figure 5 and Figure 8 The first blocking member 4 includes a plurality of second blocking surfaces 412 arranged in staggered layers, and a plurality of third blocking surfaces 42 arranged in staggered layers, wherein the plurality of second blocking surfaces 412 and the plurality of third blocking surfaces 42 are sequentially staggered and connected to form a plurality of steps;

[0072] The first port 101 includes a plurality of staggered second sealing surfaces 1012 and a plurality of staggered third sealing surfaces 1013, wherein the plurality of second sealing surfaces 1012 and the plurality of third sealing surfaces 1013 are staggered and connected in sequence to form a plurality of steps;

[0073] The plurality of second blocking surfaces 412 are respectively used to block the corresponding plurality of second sealing surfaces 1012 , and the plurality of third blocking surfaces 42 are respectively used to block the corresponding plurality of third sealing surfaces 1013 .

[0074] In this embodiment, in order to match the structure of other components, the workpiece 100 may have a plurality of second sealing surfaces 1012 and a plurality of third sealing surfaces 1013 that are perpendicular to each other on the first port 101. The plurality of second sealing surfaces 1012 are arranged in staggered layers, and the plurality of third sealing surfaces 1013 are arranged in staggered layers, wherein the plurality of second sealing surfaces 1012 and the plurality of third sealing surfaces 1013 are staggered and connected in sequence to form a plurality of sealing steps, which increases the difficulty of sealing the first port 101.

[0075] In the fixture provided in the embodiment of the present application, the first blocking member 4 includes a plurality of staggered second blocking surfaces 412 and a plurality of staggered third blocking surfaces 42, wherein the plurality of second blocking surfaces 412 and the plurality of third blocking surfaces 42 are staggered and connected in sequence to form a plurality of blocking steps; the plurality of second blocking surfaces 412 correspond one-to-one to the plurality of second sealing surfaces 1012, and the plurality of third blocking surfaces 42 correspond one-to-one to the plurality of third sealing surfaces 1013, so that the plurality of sealing steps can be blocked correspondingly, specifically, the plurality of second blocking surfaces 412 are respectively used to block the corresponding plurality of second sealing surfaces 1012, and the plurality of third blocking surfaces 42 are respectively used to block the corresponding plurality of third sealing surfaces 1013, thereby reducing the difficulty of sealing the first port 101 and ensuring the sealing effect of the first blocking member 4 on the first port 101.

[0076] In some embodiments, the first blocking member 4 is made of silicone, and the hardness (Rockwell hardness) of the first blocking member 4 is in the range of 40°-60°. By using the first blocking member 4 with a hardness in the range of 40°-60°, the sealing performance of the first blocking member 4 on the first port 101 can be ensured through the molded structure of the first blocking member 4, while preventing the first blocking member 4 from being too soft and excessively deformed.

[0077] In a specific embodiment, the first blocking member 4 is prepared by using silicone with a hardness of 50°, which can facilitate the first blocking member 4 to block different sealing surfaces on the first port 101 at the same time.

[0078] In some embodiments, reference Figure 1 and Figure 2 , the driving member 3 includes a cylinder 31 and a driving seat 32, and the driving seat 32 is arranged at the driving end of the cylinder 31;

[0079] The driving seat 32 is provided with a limiting groove, and the first blocking member 4 includes a limiting portion and a blocking portion, the limiting portion is provided in the limiting groove, and the blocking portion has a first blocking surface 411, a second blocking surface 412 and a third blocking surface 42;

[0080] The base 11 has an inclined surface 111 extending along a set direction, and the cylinder 31 is connected to the inclined surface 111 .

[0081] In this embodiment, the inclined surface 111 can provide an installation inclined surface along a set direction for fixing the cylinder 31; the cylinder 31 can continuously drive the above-mentioned driving seat 32 to move along the set direction through the push rod at the driving end, and since the limiting portion of the first blocking member 4 is fixed in the limiting groove on the driving seat 32, the limiting groove can limit the deformation of the limiting portion of the first blocking member 4 during pressing; the movement of the driving seat 32 along the set direction can push the first blocking member 4 to move along the set direction, and the multiple sealing surfaces on the first blocking member 4 can simultaneously apply a sealing force to the multiple sealing surfaces on the first port 101, so as to achieve precise sealing of the first port 101 by the first blocking member 4.

[0082] In some embodiments, reference Figure 1 and Figure 2 The base assembly 1 includes a lower support rod 13, and the support plate 12 is spaced apart on the base 11 through the lower support rod 13, so as to raise the support plate 12 and reserve space for the movement of driving components such as the cylinder 31 or the motor.

[0083] In some embodiments, reference Figure 1 A avoidance hole 112 is provided on the base 11, and the end of the cylinder 31 away from the driving end forms a fixed end. The fixed end of the cylinder 31 can extend into the avoidance hole 112 to improve the compactness of the structure of the fixture.

[0084] In one embodiment, the limiting groove is an annular groove, the first sealing member 4 is annular, the annular structure of the upper limiting portion of the first sealing member 4 matches the annular groove, and the annular structure of the sealing portion of the first sealing member 4 matches the first port 101 to ensure that the first sealing member 4 fully blocks the first port 101.

[0085] In one embodiment, see Figure 1 and Figure 2 The support plate 12 has a channel 121. When the fixture seals the workpiece, the first port 101 of the workpiece 100 is placed on the support plate 12 relative to the channel 121. The driving member 3 can drive the first blocking member 4 to penetrate the channel 121 along a set direction to block the first port 101 through the first blocking member 4.

[0086] In this embodiment, when the workpiece 100 is clamped between the support plate 12 and the cover plate assembly 2, the channel 121 on the support plate 12 exposes the first port 101, and the driving member 3 can drive the first blocking member 4 to penetrate the channel 121 along a set direction, so as to accurately block the first port 101 through the first blocking member 4 on the basis of ensuring the stability of the setting of the workpiece 100.

[0087] In one embodiment, see Figure 2 , Figure 12 to Figure 14The cover plate assembly 2 includes a cover plate 21 and a second blocking member 22. The second blocking member 22 is disposed on a side of the cover plate 21 close to the support plate 12 and is used to block the second port 102 of the upper cavity of the workpiece 100.

[0088] The first port 101 is connected to the second port 102 . The first port 101 is disposed on a first surface of the workpiece 100 , and the second port 102 is disposed on a second surface of the workpiece 100 .

[0089] In this embodiment, the first surface can be the front side of the workpiece 100, and the second surface can be the back side of the workpiece. When the upper cavity of the workpiece 100 is subjected to a sealing test through a jig, the workpiece 100 can be inverted between the support plate 12 and the cover plate assembly 2, that is, the front side of the workpiece 100 faces downward toward the support plate 12, and the back side of the workpiece 100 faces upward toward the cover plate assembly 2. While the first sealing member 4 blocks the first port 101, the second sealing member 22 is squeezed toward the direction close to the workpiece 100 through the cover plate 21, so that the second sealing member 22 blocks the second port 102 of the upper cavity of the workpiece 100, thereby ensuring the sealing effect of the jig on the upper cavity of the workpiece 100.

[0090] In one embodiment, the cover plate 21 has a mounting groove on one side close to the support plate 12, and the second blocking member 22 includes a fixing portion and a blocking portion. The fixing portion of the second blocking member 22 is arranged in the mounting groove to ensure the setting stability of the second blocking member 22, and the blocking portion of the second blocking member 22 blocks the second port 102 to ensure the accuracy of the second blocking member 22 in blocking the second port 102.

[0091] In one embodiment, the second blocking member 22 is made of silicone and has a hardness ranging from 20° to 40°.

[0092] The material of the second blocking member 22 is silicone, and the hardness (Rockwell hardness) range of the second blocking member 22 is 20°-40°. The second blocking member 22 with a hardness in the range of 20°-40° can ensure the sealing performance of the second blocking member 22 on the second port 102 through the molded structure of the second blocking member 22, and prevent the second blocking member 22 from being too soft and excessively deformed.

[0093] In a specific embodiment, the second blocking member 22 is prepared using silicone with a hardness of 30°. A frame is designed on the second blocking member 22. The silicone with a hardness of 30° is arranged on the frame and fits with the edge of the second port 102 to ensure sealing.

[0094] In some embodiments, see Fig. 9 , Fig.13 and Fig.14The first blocking member 4 , the cavity on the workpiece 100 and the second blocking member 22 form a sealed cavity. The cover plate 21 is provided with a gas nozzle 211 , and the second blocking member 22 has a vent hole 221 . The gas nozzle 211 is connected to the sealed cavity through the vent hole 221 .

[0095] In this embodiment, one end of the air nozzle 211 is connected to the sealing cavity, and the other end of the air nozzle 211 is connected to the air pipe of the sealing test equipment, playing the role of connecting the fixture and the sealing test equipment.

[0096] The cavity on the workpiece 100 has a weak area inside. Taking the workpiece with a middle frame structure as an example, the weak area may be the position where the aluminum and plastic are combined on the middle frame. There may be a risk of aluminum and plastic cracking during the use of the middle frame. The cavity on the workpiece 100 directly connects the external space and the inside of the middle frame, which easily leads to the problem that the entire electronic device cannot be sealed inside, causing waterproof and dustproof failure. Due to the complex structure of the cavity position of the middle frame, there are sealed surfaces in different directions. Specifically, the cavity of the middle frame can be, for example, an earpiece cavity. The traditional middle frame airtight test fixture opens and closes up and down, and the entire cavity position is wrapped in the fixture, which cannot accurately test the airtightness of the earpiece. The poor airtightness of the middle frame earpiece cavity needs to be identified when the whole machine is assembled, and the poor airtightness of the middle frame earpiece cavity will also lead to poor acoustic performance, while also increasing the risk of whole machine assembly. Batch defects in the middle frame cannot be identified, which may cause major quality problems in the entire batch of disassembled machines. The jig provided in the embodiment of the present application can perform an airtightness test on a separate middle frame before the middle frame is assembled into the electronic device, thereby avoiding the problem of having to perform the airtightness test only when the middle frame is assembled into the electronic device, simplifying the airtightness test of the middle frame and improving the assembly efficiency of the electronic device.

[0097] In some embodiments, reference Figure 1 and Figure 2 The cover plate assembly 2 further includes an upper support rod 23, which is connected between the cover plate 21 and the support plate 12, and the height of the upper support rod 23 matches the height of the pressing space.

[0098] In this embodiment, the upper support rod 23 can be detachably connected between the cover plate 21 and the support plate 12 by a locking piece, so as to form a pressing space for pressing the workpiece 100 between the cover plate 21 and the support plate 12; at the same time, the upper support rod 23 can limit the cover plate 21 from being too close to the support plate 12 when closing the cover, thereby avoiding over-pressure of the cover plate 21 on the workpiece 100.

[0099] In addition, the upper support rod 23 is connected between the cover plate 21 and the support plate 12 to position the cover plate 21 and the support plate 12, thereby ensuring accurate alignment between the cover plate 21 and the support plate 12.

[0100] In some embodiments, reference Figure 2The cover plate assembly 2 also includes a pressing block 24, which is located on one side of the cover plate 21 close to the support plate 12 and is used to abut the middle area of ​​the workpiece 100, so that the workpiece 100 is completely attached to the support plate 12, preventing the workpiece 100 from moving during the test, thereby ensuring the stability of the cavity sealing test on the workpiece 100.

[0101] In a specific embodiment, the workpiece sealing test method includes the following steps:

[0102] Step 1: First, fix the fixture in the sealing test equipment, and connect the air nozzle of the cover plate to the air pipe of the sealing test equipment;

[0103] Step 2: Turn on the sealing test equipment and open the fixture;

[0104] Step 3: Place the workpiece according to the position of the positioning column on the support plate;

[0105] Step 4: Press the cover plate downward so that the pressing block presses the workpiece, and the second blocking member blocks the second port;

[0106] Step 5, open the cylinder valve, the cylinder pushes the driving seat and the first blocking member, and the first blocking member blocks the first port;

[0107] Step 6: The sealing equipment starts ventilation to maintain pressure and test the cavity in the workpiece;

[0108] Step 7: After the test, open the fixture and take out the workpiece.

[0109] Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are only for illustration, not for limiting the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A jig for testing the sealing of a workpiece, characterized in that: include: A base assembly, the base assembly comprising a base and a support plate, the support plate being spaced apart on the base and used to carry a workpiece; A cover plate assembly, the cover plate assembly is connected to a side of the support plate away from the base and forms a pressing space between the cover plate and the support plate for pressing the workpiece; A driving member and a first blocking member, wherein the driving member is connected to a side of the base close to the support plate, the first blocking member has a first blocking surface, a second blocking surface and a third blocking surface, the first blocking surface and the second blocking surface both form a step perpendicular to the third blocking surface, and the driving member can drive the first blocking member to move along a set direction so that the first blocking member blocks the first port of the workpiece; The included angles formed by the set direction and the first blocking surface, the second blocking surface and the third blocking surface are all 45°.

2. The fixture according to claim 1, characterized in that: The first port includes a first sealing surface, a second sealing surface and a third sealing surface, wherein the first sealing surface and the second sealing surface both form a step perpendicular to the third sealing surface; the first blocking surface is used to block the first sealing surface, the second blocking surface is used to block the second sealing surface, and the third blocking surface is used to block the third sealing surface.

3. The fixture according to claim 2, characterized in that: The first blocking surface, the second blocking surface, the first sealing surface and the second sealing surface are parallel to each other, and the third blocking surface and the third sealing surface are parallel to each other.

4. The fixture according to claim 2, characterized in that: The first blocking member comprises a plurality of the second blocking surfaces arranged in staggered layers, and a plurality of the third blocking surfaces arranged in staggered layers, wherein the plurality of the second blocking surfaces and the plurality of the third blocking surfaces are sequentially staggered and connected to form a plurality of steps; The first port comprises a plurality of the second sealing surfaces arranged in staggered layers and a plurality of the third sealing surfaces arranged in staggered layers, wherein the plurality of the second sealing surfaces and the plurality of the third sealing surfaces are sequentially staggered and connected to form a plurality of steps; The plurality of second blocking surfaces are respectively used to block the corresponding plurality of second sealing surfaces, and the plurality of third blocking surfaces are respectively used to block the corresponding plurality of third sealing surfaces.

5. The fixture according to claim 1, characterized in that: The driving member comprises a cylinder and a driving seat, wherein the driving seat is arranged at the driving end of the cylinder; The driving seat is provided with a limiting groove, the first blocking member comprises a limiting portion and a blocking portion, the limiting portion is provided in the limiting groove, and the blocking portion has the first blocking surface, the second blocking surface and the third blocking surface; The base is provided with an inclined surface extending along the set direction, and the cylinder is connected to the inclined surface.

6. The fixture according to claim 1, characterized in that: The support plate has a channel. When the jig seals the workpiece, the first port of the workpiece is placed on the support plate relative to the channel. The driving member can drive the first blocking member to penetrate the channel along the set direction to block the first port through the first blocking member.

7. The fixture according to claim 1, characterized in that: The cover plate assembly comprises a cover plate and a second blocking member, wherein the second blocking member is arranged on a side of the cover plate close to the support plate and is used to block a second port of the upper cavity of the workpiece; The first port is connected to the second port, the first port is arranged on the first surface of the workpiece, and the second port is arranged on the second surface of the workpiece.

8. The fixture according to claim 7, characterized in that: The first blocking member, the cavity on the workpiece and the second blocking member form a sealed cavity. The cover plate is provided with an air nozzle. The second blocking member has an air vent. The air nozzle is connected to the sealed cavity through the air vent.

9. The fixture according to claim 8, characterized in that: The cover plate assembly further comprises an upper support rod, wherein the upper support rod is connected between the cover plate and the support plate, and the height of the upper support rod matches the height of the pressing space.

10. The fixture according to claim 9, characterized in that: The cover plate assembly further comprises a pressing block, which is located on a side of the cover plate close to the support plate and is used for abutting against a workpiece.

Images