Air tightness detection tool for shell

Abstract

The utility model belongs to the air tightness detection field, and provides an air tightness detection tool used for a housing, comprising a substrate provided with a detection bench, the detection bench is internally provided with a detection channel used for ventilation, and the detection channel is used for communicating with a cavity; the positioning block and the limiting block are located at the top end of the detection table, and the positioning block is used for limiting the placement position of the shell on the detection table. Compared with the prior art, the utility model has the advantages that the stability of the to-be-detected shell on the detection platform is ensured through the cooperation of the positioning block and the limiting block, after the through hole is sealed, the first sealing block is provided with the abdicating hole, so that one of the pressing columns can pass through the abdicating hole and is pressed on the top wall of the shell; the pressing columns are arranged on the periphery of the shell so that the pressing columns can be evenly pressed on the periphery of the shell, it is ensured that the shell is in a stable posture in the detection process, guarantee is provided for smoothness and accuracy in the air tightness detection process, and meanwhile, defective shell products are effectively prevented from flowing out.

Description

Technical Field

[0001] The utility model belongs to the field of air tightness detection, and in particular relates to an air tightness detection tool for a shell. Background Art

[0002] With the rapid development of technology and people's increasing requirements for product quality, molded products often need to be tested for sealing to determine whether they meet customer needs.

[0003] In the existing air tightness detection tooling, when facing some inclined through holes on the side wall of the shell, such as Figure 2 As shown, it is often necessary to seal it with a sealing block before testing. Due to the space occupied by the sealing block, the subsequent clamping column cannot be accurately and evenly pressed on the periphery of the top wall of the shell. In other words, there must be a part of the structure on the shell that cannot be clamped by the clamping column due to insufficient space. As a result, the cavity on the shell is easily affected by the smoothness and accuracy of the air-tightness test during the air-tightness test because the shell itself is not compressed, and the outflow of defective products cannot be effectively avoided. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide an airtightness detection tool for a shell.

[0005] The utility model solves the technical problem by adopting a technical solution of providing an airtightness detection tool for a shell, wherein a cavity and a plurality of through holes are formed on the shell, and each of the through holes is connected to the cavity. The detection tool comprises: a substrate, and a detection platform is configured, wherein a detection channel for ventilation is arranged in the detection platform, and the detection channel is used to connect the cavity;

[0006] A positioning block and a limiting block are located at the top of the detection platform, and the positioning block is used to limit the placement position of the shell on the detection platform; the limiting block is located at the periphery of the detection platform, and is used to press against the outer wall of the shell to prevent the shell from shaking;

[0007] A sealing assembly is arranged on the substrate, a first sealing block is movably arranged on the sealing assembly, and the first sealing block is movably pressed against a through hole on the side wall of the housing;

[0008] A clamping assembly is arranged above the detection platform, and a second sealing block and a plurality of clamping columns are connected to the movable end of the clamping assembly, and the second sealing block is movably pressed against the through hole on the top wall of the shell; a clearance hole is arranged on the first sealing block, and a plurality of the clamping columns are distributed above the periphery of the top wall of the shell, so that one of the clamping columns can pass through the clearance hole and be movably pressed against the top wall of the shell;

[0009] When the first sealing block and the second sealing block seal the through hole, and a plurality of the pressing columns press the shell, air can be ventilated into the cavity through the detection channel to implement airtightness detection of the shell.

[0010] In the above-mentioned air tightness detection tool for a housing, the pressing assembly further includes:

[0011] A mounting plate, wherein guide posts are symmetrically arranged on the base plate, and the mounting plate is connected to the top end of the guide posts;

[0012] A movable plate, movably sleeved on the guide column, the second sealing block and a plurality of pressing columns are connected to the bottom of the movable plate, so that when the movable plate approaches the detection platform, the second sealing block and a plurality of pressing columns can be driven to be movably pressed on the top wall of the shell;

[0013] A clamping cylinder is arranged on the mounting plate, a connecting block is connected to the movable plate, and a driving end of the clamping cylinder is connected to the connecting block to drive the movable plate to reciprocate along the length direction of the guide column.

[0014] In the above-mentioned airtightness detection tool for the shell, the end of the first sealing block is also connected to a sealing column, and the ends of the sealing column, the first sealing block and the second sealing block are all provided with a blocking block and a sealing ring, the blocking block is movably inserted in the through hole, and the sealing ring is distributed at the periphery of the blocking block to seal the through hole.

[0015] In the above-mentioned air tightness detection tool for the shell, an inverted T-shaped hole is provided on the movable plate, an inverted T-shaped block is movably provided in the T-shaped hole, and a buffer spring sleeved on the clamping column is connected between the T-shaped block and the clamping column.

[0016] In the above-mentioned air tightness detection tool for a shell, a guide sleeve is detachably connected to the movable plate, and the guide sleeve is movably mounted on the guide column to reduce friction between the movable plate and the guide column.

[0017] In the above-mentioned air tightness detection tool for a housing, it also includes:

[0018] A bracket is arranged on the base plate, and a horizontally placed push cylinder is installed on the bracket;

[0019] A mounting block and a locking block, wherein the mounting block is connected to the driving end of the push cylinder, and the locking block is detachably connected to the mounting block and forms a locking cavity for placing a marker pen with the mounting block;

[0020] A guide block is arranged on the bracket, a guide hole is formed in the guide block, and the marker pen is movably inserted in the guide hole;

[0021] A buffer column is detachably connected to the mounting block, and the buffer column movably abuts against the detection platform to mitigate the impact force between the marker pen and the shell.

[0022] In the above-mentioned air tightness detection tool for the shell, a plurality of connecting columns are arranged at the bottom of the movable plate, the connecting columns are threadedly connected to limiting columns, the limiting columns are threadedly connected to locking nuts, and the base plate is provided with fixed columns, and the limiting columns are movably pressed against the fixed columns.

[0023] In the above-mentioned air tightness detection tool for a housing, it also includes:

[0024] A driving member, disposed on the substrate;

[0025] A rotating block, one end of which is hinged to the driving end of the driving member, and the other end of which is connected to a pressing block, and when the driving end of the driving member is driven, the pressing block can press the shell onto the detection table;

[0026] A connecting plate, a fixing seat is provided on the driving member, one end of the connecting plate is hinged to the fixing seat, and the other end is hinged to the end of the pressing block close to the driving end.

[0027] In the above-mentioned airtightness detection tool for a housing, the sealing assembly further includes:

[0028] A mounting seat, on which a slide rail is arranged;

[0029] A connecting seat, wherein the first sealing block is detachably connected to a side wall of the connecting seat, and a slider is provided at the bottom of the connecting seat, and the slider is movably engaged with the slide rail to drive the first sealing block to move closer to or farther from the through hole on the housing;

[0030] A pushing cylinder is mounted on the mounting seat. A vertically placed engaging groove is provided on a side of the connecting seat away from the first sealing block. The driving end of the pushing cylinder is movably engaged in the engaging groove.

[0031] Compared with the prior art, the utility model has the following beneficial effects:

[0032] (1) The utility model is a tool for testing the air tightness of a shell, which ensures the stability of the shell to be tested on the test table through the cooperation of the positioning block and the limit block, and avoids the shell from being offset during the test and affecting the accuracy of the test. After the through hole is sealed, the clamping assembly can clamp the shell through the clamping column. In this scheme, a clearance hole is set on the first sealing block, so that one of the clamping columns can pass through the clearance hole and be pressed on the top wall of the shell, so that several clamping columns are evenly pressed on the periphery of the shell, ensuring that the shell is in a stable posture during the test, which provides a guarantee for the smoothness and accuracy of the air tightness test, and also effectively avoids the outflow of defective shell products.

[0033] (2) By adjusting the limit column of the threaded connection, the limit column can be retracted or extended relative to the connecting column. At the same time, the connecting column is further limited by adjusting the locking nut to prevent relative displacement between the connecting column and the limit column. The upper limit column and the fixed column are movable and tight, which effectively adjusts the size of the clamping force of the clamping column on the top wall of the shell to ensure that the quality of the shell is not affected after the air tightness test is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a stereogram of the present application;

[0035] Figure 2 is a bottom view of the shell;

[0036] Figure 3 This is a view of the installation structure of the test bench, the marker pen and the first sealing block;

[0037] Figure 4 This is a view of the installation structure of the marker pen and the buffer column on the installation block;

[0038] Figure 5 is a structural view of the clamping assembly;

[0039] Figure 6 It is the installation cross-section view between the moving plate and the clamping column.

[0040] In the figure, 1, housing; 10, through hole; 11, cavity;

[0041] 2. Base plate; 20. Testing platform; 200. Testing channel; 21. Positioning block; 22. Limiting block; 23. Guide column; 24. Fixed column; 25. Sealing ring;

[0042] 3. Sealing assembly; 30. First sealing block; 300. Clearance hole; 31. Sealing column; 32. Mounting seat; 33. Slide rail; 34. Connecting seat; 340. Engaging groove; 35. Sliding block; 36. Pushing cylinder;

[0043] 4. Clamping assembly; 40. Second sealing block; 41. Clamping column; 42. Mounting plate; 43. Moving plate; 430. T-hole; 431. T-block; 432. Buffer spring; 44. Clamping cylinder; 45. Connecting block; 46. Guide sleeve; 47. Connecting column; 470. Limiting column; 471. Locking nut; 48. Anti-slip block;

[0044] 50. Block; 51. Sealing ring;

[0045] 60. Bracket; 61. Pushing cylinder; 62. Mounting block; 63. Locking block; 64. Marking pen; 65. Locking cavity; 66. Guide block; 660. Guide hole; 67. Buffer column;

[0046] 70. Driving member; 71. Rotating block; 72. Pressing block; 73. Connecting plate; 74. Fixed seat. DETAILED DESCRIPTION

[0047] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0048] like Figures 1 to 6 As shown, the utility model is an airtightness detection tool for a shell 1, a cavity 11 and a plurality of through holes 10 are formed on the shell 1, and each through hole 10 is connected to the cavity 11, wherein the detection tool comprises: a substrate 2, equipped with a detection platform 20, a detection channel 200 for ventilation is arranged in the detection platform 20, and the detection channel 200 is used to connect the cavity 11; a positioning block 21 and a limiting block 22, which are located at the top of the detection platform 20, and the positioning block 21 is used to limit the placement position of the shell 1 on the detection platform 20; the limiting block 22 is located at the periphery of the detection platform 20, and is used to press against the outer wall of the shell 1 to prevent the shell 1 from shaking; a sealing component 3, which is arranged on the substrate 2, and a first sealing block 30 is movably provided on the sealing component 3, The first sealing block 30 is movably pressed against the through hole 10 on the side wall of the shell 1; the clamping assembly 4 is arranged above the detection table 20, and the movable end of the clamping assembly 4 is connected to the second sealing block 40 and a plurality of clamping columns 41, and the second sealing block 40 is movably pressed against the through hole 10 on the top wall of the shell 1; the first sealing block 30 is provided with a clearance hole 300, and a plurality of clamping columns 41 are distributed above the periphery of the top wall of the shell 1, so that one of the clamping columns 41 can pass through the clearance hole 300 and be movably pressed against the top wall of the shell 1; when the first sealing block 30 and the second sealing block 40 seal the through hole 10, and the plurality of clamping columns 41 press the shell 1, the detection channel 200 can be ventilated into the cavity 11 to realize the airtightness detection of the shell 1.

[0049] Before testing, the through holes 10 on the side wall and the top wall of the housing 1 need to be sealed, and then the cavity 11 is ventilated through the testing channel 200 to test the air tightness of the housing 1. Specifically, Figures 2 to 3 As shown, the positioning block 21 is close to the middle position of the detection table 20. During the placement of the shell 1, the positioning block 21 can be extended into the shell 1 to achieve pre-positioning. Since there is a certain distance between the limit block 22 and the positioning block 21, and the inner wall shape of the limit block 22 can be close to the outer wall of the shell 1, the shell 1 is effectively prevented from being offset or even falling off on the detection table 20, which provides a guarantee for the smoothness and accuracy of the subsequent air tightness test; at this time, the sealing component 3 can drive the first sealing block 30 to block the through hole 10 on the side wall of the shell 1 to prevent air leakage during the air tightness test of the cavity 11, and while the clamping component 4 drives the second clamping column 41 to block the through hole 10 on the top wall of the shell 1, several clamping columns 41 are synchronously pressed on the top wall of the shell 1. It is worth noting that the first sealing block 30 in this solution not only seals the through hole 10, but also extends a part of it to the top of the shell 1, thereby occupying a certain space. Therefore, this solution sets a clearance hole 300 on the first sealing block 30, as shown in Figure 1 and Figure 3 As shown, in the process of the clamping column 41 being pressed against the top wall of the shell 1, the first clamping column 41 can pass through the clearance hole 300 and be pressed against the top wall of the shell 1, which also enables a plurality of clamping columns 41 to be evenly pressed against the top wall of the shell 1, saving space while effectively avoiding the inability to perform all-round and stable compression of the shell 1 due to the obstruction of the first sealing block 30, ensuring that the shell 1 is in a stable posture during the detection process, providing a guarantee for the smoothness and accuracy of the airtightness detection, and also effectively reducing the outflow of defective shell 1.

[0050] Preferably, the detection pipeline in the present scheme is L-shaped (not shown in the figure). After the shell 1 to be detected is placed in the detection position, one end of the detection pipeline is interconnected with the cavity 11, and the other end can be connected to the outer wall of the detection air pump through the side wall of the detection platform 20, so as to realize the ventilation detection inside the cavity 11. In addition, the present scheme can also extend the detection pipeline to the outside of the detection platform 20, and then use the method of installing a pressure gauge to observe the change of the pressure value in the cavity 11, so as to further judge whether the airtightness of the shell 1 meets the customer's usage requirements.

[0051] The sealing assembly 3 also includes: a mounting seat 32, on which a slide rail 33 is arranged; a connecting seat 34, the first sealing block 30 is detachably connected to the side wall of the connecting seat 34, and a slider 35 is arranged at the bottom of the connecting seat 34, and the slider 35 is movably engaged with the slide rail 33 to drive the first sealing block 30 to move closer to or away from the through hole 10 on the shell 1; a pushing cylinder 36, which is mounted on the mounting seat 32, and a vertically placed engaging groove 340 is provided on the side of the connecting seat 34 away from the first sealing block 30, and the driving end of the pushing cylinder 36 is movably engaged in the engaging groove 340.

[0052] Continue to refer Figure 3 After the shell 1 to be tested is placed on the testing table 20, the pushing cylinder 36 can push the first sealing block 30 toward the shell 1 through the connecting seat 34, thereby blocking the through hole 10. During this process, the slider 35 is reciprocated along the length direction of the slide rail 33 to ensure the smoothness and stability of the first sealing block 30 in the process of sealing the through hole 10. In addition, the driving end of the pushing cylinder 36 is movably engaged in the engaging groove 340, which effectively avoids the jamming phenomenon between the driving end and the connecting seat 34 during the driving process.

[0053] The end of the first sealing block 30 is also connected to a sealing column 31. The ends of the sealing column 31, the first sealing block 30 and the second sealing block 40 are all provided with a blocking block 50 and a sealing ring 51. The blocking block 50 is movably inserted in the through hole 10, and the sealing ring 51 is distributed at the periphery of the blocking block 50 to seal the through hole 10.

[0054] Furthermore, in the present embodiment, there are two through holes 10 on the side wall. In order to save the overall space, the two through holes 10 are sealed respectively by using the sealing column 31 and the first sealing block 30. Similarly, the ends of the sealing column 31, the first sealing block 30 and the second sealing block 40 are all provided with a blocking block 50 and a sealing ring 51. When the first sealing block 30, the second sealing block 40, or the sealing column 31 approaches the through hole 10, the blocking block 50 can be inserted into the through hole 10. At the same time, the sealing block is used to effectively prevent the outflow of gas in the cavity 11. It should be added that the plug and the sealing ring 51 are both detachable installation methods, so that they can be disassembled and replaced in time after wear or damage occurs, thereby improving the stability of the structure.

[0055] Preferably, in this solution, a sealing ring 25 is further provided on the test bench 20. The sealing ring 25 can be located at the periphery of the cavity 11 when the shell 1 is placed on the test bench. The sealing ring 25 further ensures the accuracy of the airtightness test of the shell 1.

[0056] The clamping assembly 4 also includes: a mounting plate 42, on which guide columns 23 are symmetrically arranged, and the mounting plate 42 is connected to the top of the guide column 23; a movable plate 43, which is movably sleeved on the guide column 23, and the second sealing block 40 and a plurality of clamping columns 41 are all connected to the bottom of the movable plate 43, so that when the movable plate 43 approaches the detection table 20, it can drive the second sealing block 40 and a plurality of clamping columns 41 to be movably pressed on the top wall of the shell 1; a clamping cylinder 44, which is arranged on the mounting plate 42, and a connecting block 45 is connected to the movable plate 43, and the driving end of the clamping cylinder 44 is connected to the connecting block 45, so as to drive the movable plate 43 to reciprocate along the length direction of the guide column 23.

[0057] refer to Figure 1 , Figure 3 as well as Figure 5 When the housing 1 to be tested is placed at the designated position of the testing platform 20, the driving end of the pressing cylinder 44 drives the moving plate 43 along Figure 5 Move vertically downward (i.e., move vertically downward along the direction of the guide column 23). Since the second sealing block 40 and the plurality of clamping columns 41 are all arranged at the bottom of the movable plate 43, as the movable plate 43 approaches the detection platform 20, the second sealing block 40 drives the plug to complete the sealing of the through hole 10 on the top wall of the shell 1, and at the same time, the plurality of clamping columns 41 are evenly pressed on the top wall of the shell 1. It is worth noting that when the plurality of clamping columns 41 approach the detection platform 20, one of the clamping columns 41 can just pass through the clearance hole 300 on the first sealing block 30, so that the periphery of the shell 1 can be evenly clamped and fixed by the plurality of clamping columns 41, which ensures that the shell 1 is in a stable posture during the detection process, and effectively avoids the deformation of the shell 1 due to excessive local clamping force.

[0058] The movable plate 43 is detachably connected with a guide sleeve 46 , and the guide sleeve 46 is movably sleeved on the guide column 23 to reduce friction between the movable plate 43 and the guide column 23 .

[0059] Furthermore, during the reciprocating movement of the movable plate 43 in the vertical direction, the guide column 23 can provide the movable plate 43 with a guiding and limiting effect during the movement. Preferably, there are four guide columns 23 in this scheme, and the four end portions of the movable plate 43 are movably sleeved on the guide columns 23, which effectively prevents the movable plate 43 from tilting when driving the second sealing block 40 and a plurality of clamping columns 41 to move. In addition, a guide sleeve 46 is provided on the movable plate 43, and the guide sleeve 46 is used to replace the contact between the movable plate 43 and the guide column 23, which effectively avoids the frequent replacement of the movable plate 43 due to severe wear. At the same time, the guide sleeve 46 and the movable plate 43 can be detachably connected by screws, screws and other components, which provides convenience for subsequent maintenance and replacement.

[0060] An inverted T-shaped hole 430 is provided on the moving plate 43 , an inverted T-shaped block 431 is movably provided in the T-shaped hole 430 , and a buffer spring 432 sleeved on the pressing column 41 is connected between the T-shaped block 431 and the pressing column 41 .

[0061] Further reference Figure 5 and Figure 6 In the process of the plurality of pressing columns 41 pressing the top wall of the shell 1, the present solution is to install a buffer spring 432 to achieve a buffering effect when the pressing columns 41 press the shell 1. Specifically, Figure 6 As shown, the top of the clamping column 41 is also detachably connected with an anti-slip block 48 by screws. It is worth noting that the anti-slip block 48 is movable above the movable plate 43, and the width of the anti-slip block 48 is much larger than the inner diameter of the T-hole 430, so as to avoid the clamping column 41 and the movable plate 43 from falling off; when the movable plate 43 approaches the detection table 20, the clamping column 41 contacts the top wall of the shell 1, and the buffer spring 432 begins to be squeezed and contracted, thereby giving the clamping column 41 a buffering effect when it is pressed on the shell 1, preventing the shell 1 from being damaged due to excessive clamping force. Similarly, the T-block 431 is movably sleeved on the clamping column 41, and its function is the same as that of the above-mentioned guide sleeve 46, both of which are to give the clamping column 41 a clamping force in the vertical direction, and to avoid frequent replacement due to excessive friction between the clamping column 41 and the movable plate 43, which will not be described in detail here.

[0062] A plurality of connecting columns 47 are provided at the bottom of the movable plate 43 . The connecting columns 47 are internally threadedly connected to the limiting columns 470 . The limiting columns 470 are threadedly connected to the locking nuts 471 . The base plate 2 is provided with fixing columns 24 . The limiting columns 470 are movably pressed against the fixing columns 24 .

[0063] refer to Figure 1 , Figure 3 as well as Figure 5 Before the movable plate 43 drives the second sealing block 40 and the clamping column 41 to approach the top wall of the shell 1, the worker can rotate the limiting column 470 threadedly connected to the connecting column 47 so that the limiting column 470 can extend or retract relative to the connecting column 47. After adjusting to the required position, the locking nut 471 is used to rotate on the limiting column 470, and then the locking nut 471 is pressed against the bottom of the connecting column 47 to ensure the stability between the connecting column 47 and the limiting column 470. At this time, as the movable plate 43 approaches the top wall of the shell 1, the limiting column 470 is accurately pressed against the fixed column 24, thereby also playing a limiting function for the movable plate 43, indirectly controlling the pressing force of the clamping column 41 on the top wall of the shell 1, and ensuring that the quality of the shell 1 after inspection is not affected.

[0064] The present solution also includes: a driving member 70, which is arranged on the base plate 2; a rotating block 71, one end of which is hinged to the driving end of the driving member 70, and the other end of which is connected to a clamping block 72, when the driving end of the driving member 70 is driven, the clamping block 72 can press the shell 1 onto the detection table 20; a connecting plate 73, a fixing seat 74 is provided on the driving member 70, one end of the connecting plate 73 is hinged to the fixing seat 74, and the other end is hinged to the end of the clamping block 72 close to the driving end.

[0065] In addition to the above-mentioned pressing and fixing of the housing 1 by a plurality of pressing columns 41, the present solution further provides a driving member 70 on the base plate 2, such as Figure 1 and Figure 3 As shown, when the driving end of the driving member 70 moves in the vertical direction, since the rotating block 71 is hinged to the driving end and the connecting block 45, the rotating block 71 can drive the clamping block 72 to be stably pressed on the shell 1 during the rotation process. It should be noted that the clamping block 72 is located between two adjacent clamping columns 41, which further improves the stability of the shell 1 on the detection table 20. In addition, the installation structure and working principle of the driving member 70, the clamping block 72 and the rotating block 71 are the same as the traditional clamping method, which will not be repeated here.

[0066] The present scheme also includes: a bracket 60, which is arranged on the substrate 2, and a horizontally placed push cylinder 61 is installed on the bracket 60; a mounting block 62 and a locking block 63, the mounting block 62 is connected to the driving end of the push cylinder 61, the locking block 63 is detachably connected to the mounting block 62, and forms a locking cavity 65 for placing a marker pen 64 with the mounting block 62; a guide block 66, which is arranged on the bracket 60, and a guide hole 660 is formed in the guide block 66, and the marker pen 64 is movably inserted in the guide hole 660; a buffer column 67, which is detachably connected to the mounting block 62, and the buffer column 67 is movably pressed against the detection table 20 to reduce the impact force between the marker pen 64 and the shell 1.

[0067] In addition, the present invention also provides a marking pen 64 for marking. Figure 3 and Figure 4 After the shell 1 on the inspection table 20 is inspected, the push cylinder 61 can drive the mounting block 62 along Figure 4Move to the left. Since the marker pen 64 is installed on the mounting block 62 in the horizontal direction, the marker pen 64 can touch the outer wall of the shell 1 as the push cylinder 61 is driven, so as to mark that the shell 1 has been inspected and completed, effectively avoiding the mixing of the inspected products and the uninspected products, which makes it impossible for workers to distinguish them. During the movement of the marker pen 64, the buffer column 67, which is also horizontally installed on the mounting block 62, gradually approaches the side wall of the inspection table 20. The buffer column 67 is movably pressed against the inspection table 20, which indirectly gives the marker pen 64 a buffering effect when it contacts and marks the shell 1, thereby providing a guarantee for the quality of the shell 1 after inspection.

[0068] Preferably, the locking block 63 in the present embodiment is detachably connected to the top of the mounting block 62 by means of screws, and the locking cavity 65 formed between the locking block 63 and the mounting block 62 is used to lock and fix the marker pens 64 of different diameters, thereby improving the stability of the marker pens 64 when contacting the mark, and the guide hole 660 in the guide block 66 also provides a guiding effect for the marker pens 64 when it reciprocates in the horizontal direction, thereby avoiding the tilt of the marker pens 64 and causing different marking positions of several shells 1, thereby effectively improving the smoothness and stability of the structure during operation.

[0069] It should be noted that the driving member 70 in this solution can be a hydraulic cylinder, a pneumatic cylinder or other driving devices.

[0070] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0071] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0072] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0073] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A gas tightness detection tool for a shell, wherein a cavity and a plurality of through holes are formed on the shell, and each of the through holes is connected to the cavity, characterized in that: The detection tooling comprises: The base plate is provided with a detection platform, wherein a detection channel for ventilation is provided in the detection platform, and the detection channel is used to communicate with the cavity; A positioning block and a limiting block are located at the top of the detection platform, and the positioning block is used to limit the placement position of the shell on the detection platform; the limiting block is located at the periphery of the detection platform, and is used to press against the outer wall of the shell to prevent the shell from shaking; A sealing assembly is arranged on the substrate, a first sealing block is movably arranged on the sealing assembly, and the first sealing block is movably pressed against a through hole on the side wall of the housing; A clamping assembly is arranged above the detection platform, and a second sealing block and a plurality of clamping columns are connected to the movable end of the clamping assembly, and the second sealing block is movably pressed against the through hole on the top wall of the shell; a clearance hole is arranged on the first sealing block, and a plurality of the clamping columns are distributed above the periphery of the top wall of the shell, so that one of the clamping columns can pass through the clearance hole and be movably pressed against the top wall of the shell; When the first sealing block and the second sealing block seal the through hole, and a plurality of the pressing columns press the shell, air can be ventilated into the cavity through the detection channel to implement airtightness detection of the shell.

2. The air tightness detection tool for a housing according to claim 1, characterized in that: The clamping assembly also includes: A mounting plate, wherein guide posts are symmetrically arranged on the base plate, and the mounting plate is connected to the top end of the guide posts; A movable plate, movably sleeved on the guide column, the second sealing block and a plurality of pressing columns are connected to the bottom of the movable plate, so that when the movable plate approaches the detection platform, the second sealing block and a plurality of pressing columns can be driven to be movably pressed on the top wall of the shell; A clamping cylinder is arranged on the mounting plate, a connecting block is connected to the movable plate, and a driving end of the clamping cylinder is connected to the connecting block to drive the movable plate to reciprocate along the length direction of the guide column.

3. The air tightness detection tool for a housing according to claim 1, characterized in that: The end of the first sealing block is also connected to a sealing column, and the ends of the sealing column, the first sealing block and the second sealing block are all provided with a blocking block and a sealing ring. The blocking block is movably inserted in the through hole, and the sealing ring is distributed at the periphery of the blocking block to seal the through hole.

4. The air tightness detection tool for a housing according to claim 2, characterized in that: An inverted T-shaped hole is arranged on the movable plate, an inverted T-shaped block is movably arranged in the T-shaped hole, and a buffer spring sleeved on the clamping column is connected between the T-shaped block and the clamping column.

5. The air tightness detection tool for a housing according to claim 2, characterized in that: The movable plate is detachably connected with a guide sleeve, and the guide sleeve is movably sleeved on the guide column to reduce friction between the movable plate and the guide column.

6. The air tightness detection tool for a housing according to claim 1, characterized in that: Also includes: A bracket is arranged on the base plate, and a horizontally placed push cylinder is installed on the bracket; A mounting block and a locking block, wherein the mounting block is connected to the driving end of the push cylinder, and the locking block is detachably connected to the mounting block and forms a locking cavity for placing a marker pen with the mounting block; A guide block is arranged on the bracket, a guide hole is formed in the guide block, and the marker pen is movably inserted in the guide hole; A buffer column is detachably connected to the mounting block, and the buffer column movably abuts against the detection platform to mitigate the impact force between the marker pen and the shell.

7. The air tightness detection tool for a housing according to claim 2, characterized in that: A plurality of connecting columns are arranged at the bottom of the movable plate, the connecting columns are internally threadedly connected to limiting columns, the limiting columns are threadedly connected to locking nuts, and the base plate is provided with fixing columns, the limiting columns are movably pressed against the fixing columns.

8. The air tightness detection tool for a housing according to claim 1, characterized in that: Also includes: A driving member, disposed on the substrate; A rotating block, one end of which is hinged to the driving end of the driving member, and the other end of which is connected to a pressing block, and when the driving end of the driving member is driven, the pressing block can press the shell onto the detection table; A connecting plate, a fixing seat is provided on the driving member, one end of the connecting plate is hinged to the fixing seat, and the other end is hinged to the end of the pressing block close to the driving end.

9. The air tightness detection tool for a housing according to claim 1, characterized in that: The sealing assembly further comprises: A mounting seat, on which a slide rail is arranged; A connecting seat, wherein the first sealing block is detachably connected to a side wall of the connecting seat, and a slider is provided at the bottom of the connecting seat, and the slider is movably connected to the slide rail to drive the first sealing block to move closer to or farther from the through hole on the housing; A pushing cylinder is mounted on the mounting seat. A vertically placed engaging groove is provided on a side of the connecting seat away from the first sealing block. The driving end of the pushing cylinder is movably engaged in the engaging groove.

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