Plastic dust cover sealing performance detection equipment

Abstract

The utility model is suitable for the technical field of sealing performance detection, and provides plastic dust cover sealing performance detection equipment, which comprises a detection table, a plurality of fixed columns are fixedly arranged on the detection table at equal intervals, an air flow channel is arranged in each fixed column, and the plurality of air flow channels are respectively communicated with external air source conveying equipment; an air pressure sensor is further arranged at the top end of each fixing column, a bearing seat is fixedly installed on the outer side of each fixing column, each bearing seat is provided with a plurality of bearing blocks which are detachably connected with one another, a plastic dust cover body is further placed on the bearing seats, and an air outlet in the top end of the airflow channel is located in the inner side of the plastic dust cover body; according to the device, a proper number of bearing blocks only need to be selected for assembly according to the bottom sizes of the plastic dust cover bodies of different specifications, repeated disassembly and reassembly are not needed, the workload needed by manual assembly and disassembly is greatly reduced, meanwhile, the installation mode is simple and convenient, firmness is achieved, and the problem of disengagement is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of sealing detection, and particularly relates to a sealing detection device for a plastic dust cover. Background Technique

[0002] A plastic dust cover refers to a plastic dust-proof product used for mechanical parts. Before use, a sealing detection device is required to detect the sealing performance of the plastic dust cover to avoid using a plastic dust cover with poor sealing performance, which may affect the accuracy of precision parts.

[0003] The Chinese utility model patent with the publication number of CN218994664U, a sealing detection device for a plastic dust cover, includes a machine body. On one side of the top of the machine body, a detection terminal is fixedly installed, and on the other side of the top of the machine body, a hydraulic rod is fixedly installed. In the above solution, when using the sealing detection device for the plastic dust cover, the operator selects a plugging column according to the size of the through holes on both sides of the plastic dust cover to plug one side of the plastic dust cover, and then plugs the bottom through hole according to its size. Then, the air cylinder is started to inject gas into the inner cavity of the plastic dust cover, and the internal air pressure transmits numerical signals to the detection terminal through the air pressure sensor, achieving the effect of adapting to different bottom openings of plastic dust covers and improving applicability; when the heights of the plastic dust covers are different, the operator controls and adjusts the hydraulic rod and the telescopic rod through the detection terminal to adjust the overall positional relationship, achieving the effect of being applicable to plastic dust covers of different heights and improving practicability.

[0004] However, the above device has the following technical problems in actual use:

[0005] First, when the above device conducts a sealing test on the plastic dust cover, it is necessary to select a suitable second ring according to the bottom size of the plastic dust cover, assemble it on the air outlet column, then place the plastic dust cover on the second ring, insert a plugging column into the through hole at its top, and then use the air outlet column to inflate the inside of the plastic dust cover to achieve airtightness detection. However, this method requires manual assembly of different specifications of the second ring according to the bottom size of the plastic dust cover. The process of manually disassembling the original second ring and then assembling a new one is time-consuming and laborious, affecting the detection efficiency of the plastic dust cover.

[0006] Second, in addition, the above device can only detect a single plastic dust cover each time, with low detection efficiency and consuming more detection time, which affects the detection efficiency. Content of the Utility Model

[0007] The utility model provides a sealing detection device for a plastic dust cover, aiming to solve the problems mentioned in the above background technology. In the above device, manual workers need to assemble second rings with different specifications according to the bottom sizes of different plastic dust covers. It is time-consuming and laborious during the process of manually disassembling the original second ring and then assembling a new one, which affects the detection efficiency. At the same time, the above device can only detect a single plastic dust cover each time, with low detection efficiency and long time consumption.

[0008] The utility model is realized as follows. A sealing detection device for a plastic dust cover includes: a detection table, on which a plurality of fixed columns are fixedly installed at equal intervals. An air flow passage is opened in each fixed column, and a plurality of air flow passages are respectively connected to an external air source conveying device. A pressure sensor is also arranged on the top end of each fixed column. A bearing seat is fixedly installed on the outer side of each fixed column. Each bearing seat has a plurality of bearing blocks that can be detachably connected to each other. A plastic dust cover body is placed on the bearing seat, and the air outlet at the top end of the air flow passage is located inside the plastic dust cover body. A top plate is also arranged in parallel above the detection table. A plurality of columns are fixedly connected vertically between the top plate and the detection table. At least one electric push rod is fixedly installed on the top wall of the top plate. The output end of the electric push rod is fixedly connected to a movable plate arranged in parallel below the top plate. A blocking mechanism is arranged on the bottom wall of the movable plate corresponding to the plurality of fixed columns. The blocking mechanism has a plurality of blocking heads, and the blocking heads are used to block the through holes at the top end of the plastic dust cover body; in this solution, in this device, an annular fixing block is arranged on the outer side of the fixed column, and a first bearing block is arranged on the outer side of the annular fixing block. The bottom end of the plastic dust cover body is placed on the first bearing block. If the bottom size of the plastic dust cover body is relatively large, a second bearing block (and a third bearing block) can be connected to the outer side of the first bearing block to meet the bearing of the bottom of the plastic dust cover body. When assembling the second bearing block in this device, the second bearing block is concentrically placed on the outer side of the first bearing block, and at the same time, the first engaging groove is inserted into the second fixing groove opened on the bottom wall of the second bearing block. The mutual engagement between the second fixing groove and the first engaging groove satisfies the stable assembly of the second bearing block on the outer side of the first bearing block. Similarly, when assembling the third bearing block, the third bearing block is concentrically placed on the outer side of the second bearing block, and the second engaging groove and the third fixing groove are mutually engaged. This device only needs to select the appropriate number of bearing blocks for assembly according to the bottom sizes of plastic dust cover bodies with different specifications, without repeatedly disassembling and reinstalling, greatly reducing the workload required for manual loading and unloading. At the same time, the installation method is simple and relatively firm, and the problem of detachment will not occur.

[0009] In addition, a plurality of fixing columns are arranged on the detection table in this device, and a bearing seat is arranged on each fixing column, so as to meet the placement of a plurality of plastic dust-proof cover bodies at the same time. At the same time, the air flow passages inside each fixing column are communicated with an external air source conveying device. Therefore, it is convenient for workers to detect a plurality of plastic dust-proof cover bodies at the same time, effectively improving the work efficiency.

[0010] Preferably, each of the plugging mechanisms includes: a mounting seat fixedly installed at the bottom of the movable plate, a sliding groove is formed on the bottom wall of the mounting seat, and a sliding block is slidably connected in the sliding groove. Among them, a first plugging head, a second plugging head, and a third plugging head are fixedly installed on the bottom wall of the sliding block at intervals along its length, and the outer diameters of the first plugging head, the second plugging head, and the third plugging head gradually increase; in this solution, it can be understood that a conventional plastic dust-proof cover body has a through hole opened at the top end and an open end at the bottom. When the plastic dust-proof cover body is placed on the bearing seat, the bearing seat (a plurality of bearing blocks) is used to plug the open end at the bottom. Subsequently, the output end of the electric push rod extends to push the movable plate downward, and the movable plate drives the designated plugging heads (the first plugging head, the second plugging head, and the third plugging head) to insert into the through hole on the plastic dust-proof cover body, thereby completing the plugging of both ends of the plastic dust-proof cover body and ensuring that the compressed air filled into it will not leak, thus ensuring the accuracy of the airtightness detection.

[0011] Preferably, the bearing seat includes: an annular fixing block fixedly connected to the outer wall of the fixing column, a first bearing block is fixedly connected to the annular fixing block, the first bearing block is arranged around the outside of the fixing column, and a second bearing block is detachably connected to the outside of the first bearing block, and a third bearing block is detachably connected to the outside of the second bearing block. Among them, a first slot, a second slot, and a third slot are respectively formed on the first bearing block, the second bearing block, and the third bearing block, and the first slot, the second slot, and the third slot are concentrically arranged; in this solution, the first bearing block in this device is arranged on the annular fixing block, and the second bearing block is detachably fixedly connected to the outside of the first bearing block. At the same time, the third bearing block is detachably fixedly connected to the outside of the second bearing block. The second slot can conveniently accommodate the first bearing block, and the third slot can conveniently accommodate the second bearing block, ensuring the stability when each bearing block is assembled with each other.

[0012] Preferably, a first fixing groove for accommodating the annular fixing block is formed at the bottom end of the inner peripheral wall of the first slot hole, and a first engaging groove is formed at the top end of the outer peripheral wall of the first bearing block. A second fixing groove engagingly connected to the first engaging groove is formed at the bottom end of the inner peripheral wall of the second slot hole, and a second engaging groove is formed at the top end of the outer peripheral wall of the second bearing block. A third fixing groove engagingly connected to the second engaging groove is formed at the bottom end of the inner peripheral wall of the third slot hole. In this solution, during actual assembly, the first bearing block is placed outside the fixing column, and the annular fixing block is inserted into the first fixing groove formed in the bottom wall of the first bearing block to complete the assembly of the first bearing block. Subsequently, the second bearing block is placed outside the first bearing block, and the second fixing groove in the bottom wall of the second bearing block is inserted into the first engaging groove formed in the outer peripheral wall of the first bearing block to complete the assembly of the second bearing block. Then, the third bearing block is placed outside the second bearing block, and the third fixing groove in the bottom wall of the third bearing block is inserted into the second engaging groove formed in the outer peripheral wall of the second bearing block to fix the third bearing block.

[0013] Preferably, a chamber is formed inside the inspection table, and an air pump is fixedly installed in the chamber. An air outlet pipe is connected to the air outlet end of the air pump. The bottom end of each fixing column is provided with an air inlet pipe communicating with the air flow passage, and each air inlet pipe is respectively connected to the air outlet pipe. In this solution, when the air pump operates, compressed air is filled into the air outlet pipe, and then the compressed air is shunted and conveyed to each air outlet pipe through the air outlet pipe, and then the compressed air is conveyed into the designated air flow passage through the air outlet pipe, and the compressed air is filled into each plastic dust-proof cover body by using the air flow passage.

[0014] Preferably, a one-way valve is fixedly installed on each air inlet pipe. In this solution, by setting the one-way valve, the air inlet pipe can be blocked after inflation to prevent the compressed air from flowing back, and the inside of the plastic dust-proof cover body is subjected to pressure holding treatment, so that the staff can monitor the air pressure value inside the plastic dust-proof cover body according to the air pressure sensor.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: A plastic dust-proof cover sealing detection device of the present utility model:

[0016] 1. For this device, only the appropriate number of bearing blocks needs to be selected for assembly according to the bottom size of the plastic dust-proof cover body of different specifications, without repeated disassembly and reinstallation, which greatly reduces the workload required for manual loading and unloading. At the same time, the installation method is simple and relatively reliable, and the problem of detachment will not occur.

[0017] 2. In this device, multiple fixed columns are arranged on the detection table, and each fixed column is provided with a bearing seat, so that multiple plastic dust cover bodies can be placed at the same time. At the same time, the air flow passage inside each fixed column is connected to the external air source delivery equipment, so it is convenient for the staff to detect multiple plastic dust cover bodies at the same time, which effectively improves the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front cross-sectional view of the utility model;

[0019] Figure 2 It is a side sectional view of the blocking mechanism in the utility model;

[0020] Figure 3 It is a schematic diagram of the expansion of the bearing seat in the utility model;

[0021] In the figure:

[0022] 1. Testing table; 11. Fixing column; 12. Chamber; 13. Air pump; 131. Air outlet pipe; 14. Air pressure sensor; 15. Air inlet pipe; 151. One-way valve;

[0023] 2. Bearing seat; 21. Annular fixing block; 22. First bearing block; 221. First slot hole; 222. First fixing groove; 223. First engaging groove; 23. Second bearing block; 231. Second slot hole; 232. Second fixing groove; 233. Second engaging groove; 24. Third bearing block; 241. Third slot hole; 242. Third fixing groove;

[0024] 3. Top plate; 31. Column; 32. Electric push rod; 33. Movable plate;

[0025] 4. Sealing mechanism; 41. Mounting seat; 42. Sliding groove; 43. Sliding block; 44. First sealing head; 45. Second sealing head; 46. Third sealing head. DETAILED DESCRIPTION

[0026] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0027] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0028] Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", "connection" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0031] Please refer to Figures 1-3 , the present utility model provides a technical solution: a sealing detection device for a plastic dust cover, including: a detection table 1, on which a plurality of fixed columns 11 are fixedly installed at equal intervals. An air flow passage is opened in each fixed column 11, and a plurality of air flow passages are respectively communicated with an external air source conveying device. A pressure sensor 14 is further arranged on the top end of the fixed column 11. A bearing seat 2 is fixedly installed on the outer side of each fixed column 11. Each bearing seat 2 has a plurality of bearing blocks that are detachably connected to each other. A plastic dust cover body is placed on the bearing seat 2, and the air outlet at the top end of the air flow passage is located inside the plastic dust cover body. A top plate 3 is further arranged in parallel above the detection table 1. A plurality of columns 31 are fixedly connected vertically between the top plate 3 and the detection table 1. At least one electric push rod 32 is fixedly installed on the top wall of the top plate 3. The output end of the electric push rod 32 is fixedly connected to a movable plate 33 arranged in parallel below the top plate 3. A blocking mechanism 4 is arranged on the bottom wall of the movable plate 33 corresponding to the plurality of fixed columns 11. The blocking mechanism 4 has a plurality of blocking heads, and the through holes at the top end of the plastic dust cover body are blocked by using the blocking heads.

[0032] Further, each plugging mechanism 4 includes: a mounting seat 41 fixedly installed at the bottom of the movable plate 33. A sliding groove 42 is formed in the bottom wall of the mounting seat 41. A sliding block 43 is slidably connected in the sliding groove 42. Among them, a first plugging head 44, a second plugging head 45, and a third plugging head 46 are fixedly installed on the bottom wall of the sliding block 43 at intervals along its length. The outer diameters of the first plugging head 44, the second plugging head 45, and the third plugging head 46 gradually increase.

[0033] Specifically, to ensure the stable sliding of the sliding block 43 in the sliding groove 42, the sliding groove 42 is preferably a T-shaped groove, and the sliding block 43 is a T-shaped block. The first plugging head 44, the second plugging head 45, and the third plugging head 46 are sequentially arranged on the bottom wall of the T-shaped sliding block 43.

[0034] Further, the bearing seat 2 includes: an annular fixing block 21 fixedly connected around the outer wall of the fixing column 11. A first bearing block 22 is fixedly connected to the annular fixing block 21. The first bearing block 22 is arranged around the outside of the fixing column 11. A second bearing block 23 is detachably connected to the outside of the first bearing block 22. A third bearing block 24 is detachably connected to the outside of the second bearing block 23. Among them, first slot holes 221, second slot holes 231, and third slot holes 241 are respectively formed in the first bearing block 22, the second bearing block 23, and the third bearing block 24. The first slot holes 221, the second slot holes 231, and the third slot holes 241 are concentrically arranged.

[0035] Specifically, although the first bearing block 22, the second bearing block 23, and the third bearing block 24 are provided in this device, in actual use, fourth bearing blocks, fifth bearing blocks... with appropriate sizes can also be selected according to actual use requirements. The fourth bearing block is arranged outside the third bearing block 24, and the fifth bearing block is arranged outside the fourth bearing block. The staff can freely assemble according to actual needs, and this solution will not be elaborated too much here.

[0036] Further, a first fixing groove 222 for accommodating the annular fixing block 21 is formed at the bottom end of the inner peripheral wall of the first slot hole 221, and a first engaging groove 223 is formed at the top end of the outer peripheral wall of the first bearing block 22. A second fixing groove 232 that is engaged with the first engaging groove 223 is formed at the bottom end of the inner peripheral wall of the second slot hole 231, and a second engaging groove 233 is formed at the top end of the outer peripheral wall of the second bearing block 23. A third fixing groove 242 that is engaged with the second engaging groove 233 is formed at the bottom end of the inner peripheral wall of the third slot hole 241.

[0037] Specifically, in this device, the first fixing groove 222 and the first slot hole 221 are concentrically arranged, and the first fixing groove 222 is arranged in the lower half of the inner peripheral wall of the first slot hole 221. Similarly, the first engaging groove 223 is arranged in the upper half of the outer peripheral wall of the first bearing block 22. The second fixing groove 232 and the second slot hole 231 are concentrically arranged, and it is located in the lower half of the inner peripheral wall of the second slot hole 231. The second engaging groove 233 is located in the upper half of the outer peripheral wall of the second bearing block 23. The third fixing groove 242 and the third slot hole 241 are concentrically arranged, and it is located in the lower half of the inner peripheral wall of the third slot hole 241.

[0038] As described above, a third engaging groove can also be provided at the top of the outer peripheral wall of the third bearing block 24 to utilize the third engaging groove to meet the subsequent assembly of the fourth bearing block.

[0039] Furthermore, a chamber 12 is provided inside the inspection table 1, and an air pump 13 is fixedly installed in the chamber 12. An air outlet pipe 131 is connected to the air outlet end of the air pump 13. An air inlet pipe 15 communicating with the air flow passage is provided at the bottom end of each fixing column 11, and each air inlet pipe 15 is respectively connected to the air outlet pipe 131.

[0040] Furthermore, a one-way valve 151 is fixedly installed on each air inlet pipe 15.

[0041] The working principle and usage process of the present utility model:

[0042] Select an appropriate number of bearing blocks according to the size of the open bottom of the plastic dust-proof cover body, and sequentially assemble them on the outside of the fixing columns 11. Then place the plastic dust-proof cover body on the bearing blocks, and move the sliding block 43 in the sliding groove 42 so that the plugging head of the specified size moves above the through hole at the top of the plastic dust-proof cover body. Then the output end of the electric push rod 32 extends to push the movable plate 33 downward. The movable plate 33 drives the plugging mechanism 4 downward, and inserts the specified plugging head into the through hole to complete the plugging of both ends of the plastic dust-proof cover body.

[0043] Then the air pump 13 works to convey compressed air into the air outlet pipe 131. The compressed air enters each air flow passage through the air inlet pipe 15, and then enters each plastic dust-proof cover body along the air flow passage. After the inflation is completed, the one-way valve 151 closes to prevent the leakage of compressed air. The air pressure sensor 14 electrically connected to the external detection device is used to detect the air pressure value inside the plastic dust-proof cover body, so as to detect the air tightness inside the plastic dust-proof cover body.

[0044] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A plastic dust cover sealing performance detection device, characterized in that: Including: A detection table (1) is fixedly installed with a plurality of fixed columns (11) at equal intervals. An air flow passage is provided in each of the fixed columns (11), and the plurality of air flow passages are respectively communicated with an external air source conveying device. A pressure sensor (14) is further provided on the top end of the fixed column (11); A bearing seat (2) is fixedly installed on the outer side of each of the fixed columns (11). Each bearing seat (2) has a plurality of bearing blocks that are detachably connected to each other. A plastic dust-proof cover body is placed on the bearing seat (2), and the air outlet at the top end of the air flow passage is located inside the plastic dust-proof cover body; A top plate (3) is further provided parallel above the detection table (1). A plurality of columns (31) are fixedly connected vertically between the top plate (3) and the detection table (1). At least one electric push rod (32) is fixedly installed on the top wall of the top plate (3), and the output end of the electric push rod (32) is fixedly connected to a movable plate (33) arranged parallel below the top plate (3); A blocking mechanism (4) is provided on the bottom wall of the movable plate (33) corresponding to the plurality of fixed columns (11). The blocking mechanism (4) has a plurality of blocking heads, and the through holes at the top end of the plastic dust-proof cover body are blocked by the blocking heads.

2. The sealing performance detection device for a plastic dust cover according to claim 1, wherein: Each of the blocking mechanisms (4) includes: A mounting seat (41) fixedly installed on the bottom of the movable plate (33). A sliding groove (42) is provided on the bottom wall of the mounting seat (41), and a sliding block (43) is slidably connected in the sliding groove (42); Among them, a first blocking head (44), a second blocking head (45), and a third blocking head (46) are fixedly installed on the bottom wall of the sliding block (43) at intervals along its length. The outer diameters of the first blocking head (44), the second blocking head (45), and the third blocking head (46) gradually increase.

3. The sealing performance detection device for a plastic dust cover according to claim 1, characterized in that: The bearing seat (2) includes: An annular fixing block (21) fixedly connected around the outer wall of the fixed column (11). A first bearing block (22) is fixedly connected to the annular fixing block (21). The first bearing block (22) is arranged around the outside of the fixed column (11). A second bearing block (23) is detachably connected to the outside of the first bearing block (22), and a third bearing block (24) is detachably connected to the outside of the second bearing block (23); Among them, a first slot hole (221), a second slot hole (231), and a third slot hole (241) are respectively provided on the first bearing block (22), the second bearing block (23), and the third bearing block (24). The first slot hole (221), the second slot hole (231), and the third slot hole (241) are concentrically arranged.

4. The sealing performance detection device for a plastic dust cover according to claim 3, wherein: A first fixing groove (222) for accommodating the annular fixing block (21) is provided at the bottom end of the inner peripheral wall of the first slot hole (221), and a first engaging groove (223) is provided at the top end of the outer peripheral wall of the first bearing block (22); At the bottom of the inner peripheral wall of the second slot hole (231), a second fixing groove (232) that is snap-fitted with the first engaging groove (223) is provided, and a second engaging groove (233) is provided at the top of the outer peripheral wall of the second bearing block (23); At the bottom of the inner peripheral wall of the third slot hole (241), a third fixing groove (242) that is snap-fitted with the second engaging groove (233) is provided.

5. The sealing performance testing device for a plastic dust cover according to claim 1, wherein: A chamber (12) is provided inside the inspection table (1), an air pump (13) is fixedly installed in the chamber (12), and an air outlet pipe (131) is communicated with the air outlet end of the air pump (13); An air inlet pipe (15) communicating with the air flow passage is provided at the bottom end of each fixing column (11), and each air inlet pipe (15) is respectively communicated with the air outlet pipe (131).

6. The sealing performance detection device for a plastic dust cover according to claim 5, wherein: A one-way valve (151) is fixedly installed on each air inlet pipe (15).

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