A device for automatically detecting airtightness of four sides of a workpiece

Abstract

The utility model relates to the technical field of multi-faceted detection of workpieces, and specifically to an automatic airtightness detection device for four sides of a workpiece, comprising a detection table, a bottom of the detection table is fixedly provided with a support foot, a surface of the detection table is fixedly provided with a support frame, and a multi-faceted detection mechanism, wherein the multi-faceted detection mechanism for performing multi-faceted detection of the workpiece at the same time is arranged on one side of the detection table; when in use, a cavity workpiece can be placed on the surface of the detection table, and then the airtightness detection of the cavity workpiece can be performed simultaneously through a plurality of electric push rods and corresponding detection components, and when performing the detection, the detection component can also perform the airtightness detection on the contact part with the workpiece, and the part not in contact with the workpiece is not detected, so that the detection component is adapted to different cavity workpieces, and the workpiece can be fixed by the fixing component when performing the airtightness detection, thereby improving the stability of the workpiece during the airtightness detection.

Description

Technical Field

[0001] The utility model relates to the technical field of multi-faceted detection of workpieces, in particular to an automatic airtightness detection device for four sides of a workpiece. Background Art

[0002] Some cavity workpieces, such as the cylinder head and cylinder block of automobile engine cylinders, must ensure strict air tightness. Therefore, usually after manufacturing, it is necessary to use automatic detection equipment to test the air tightness of the cavity tool;

[0003] As shown in the reference case "An airtightness detection device for a cavity workpiece" announcement number "CN208239034U", the airtightness detection device is used to detect the airtightness of the cavity workpiece. The device has a simple structure and a small size, is easy to maintain, and has the advantages of being easy to use, having a high detection efficiency, and having reliable detection results;

[0004] Existing airtightness detection devices can usually only process workpieces of standard sizes and have poor adaptability to non-standard workpieces, resulting in the inability to stably fix and seal workpieces of different sizes during detection, causing inaccurate detection results or the inability to perform detection.

[0005] Therefore, an automatic airtightness detection device for four sides of a workpiece is proposed to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide an automatic airtightness detection device for the four sides of a workpiece in order to solve the above-mentioned problem, thereby improving the problem that existing airtightness detection equipment can often only process workpieces of standard sizes and has poor adaptability to non-standard workpieces, resulting in the inability to stably fix and seal workpieces of different sizes during detection, resulting in inaccurate detection results or the inability to perform detection.

[0007] The utility model achieves the above-mentioned purpose through the following technical solutions: an automatic airtightness detection device for four sides of a workpiece, comprising a detection table, a support leg is fixedly installed at the bottom of the detection table, a support frame is fixedly installed on the surface of the detection table, and a multi-faceted detection mechanism is arranged on one side of the detection table for performing simultaneous multi-faceted detection of the workpiece, wherein the multi-faceted detection mechanism comprises a plurality of electric push rods fixedly installed on the surface of the detection table, a detection component is arranged at the output end of the electric push rod, and a fixing component is arranged on one side of the support frame. When in use, a cavity workpiece can be placed on the surface of the detection table, and then the cavity workpiece can be simultaneously tested for airtightness by using a plurality of electric push rods and corresponding detection components. When performing the detection, the detection component can also perform airtightness detection on the contact part with the workpiece, and the part not in contact with the workpiece is not detected, so that the detection component is adapted to different cavity workpieces, and the workpiece can be fixed by the fixing component during airtightness detection, thereby improving the stability of the workpiece during airtightness detection.

[0008] Preferably, the detection component includes a detection plate fixedly mounted on the output end of the electric push rod, a sealed cavity is provided inside the detection plate, an air pump is fixedly mounted inside the sealed cavity, the output end of the air pump is located inside the sealed cavity, a plurality of sealing frames are fixedly mounted on one side of the detection plate, and the plurality of sealing frames are communicated with the inside of the sealed cavity. When performing detection, the detection plate on one side can be driven by the electric push rod to approach the workpiece, and the corresponding detection plates can be synchronously driven by the electric push rods located around the workpiece to approach the workpiece, so that the four sides of the workpiece can be synchronously detected. When the detection plate contacts the surface of the workpiece, gas can be injected into the sealed cavity by the air pump, and then the workpiece can be airtightly detected by the plurality of sealing frames. The air pressure inside the sealed cavity can be detected by a pressure sensor to detect the airtightness of one side of the workpiece. If the pressure sensor detects a pressure drop, it indicates that there is an airtightness problem on the contact surface of the workpiece.

[0009] Preferably, the detection component also includes a detection block slidably mounted inside the sealing frame, one side of the detection block extends out of the sealing frame, one side of the detection block is provided with a plurality of air outlet holes, and both sides of the detection block are provided with air inlet holes, and the plurality of air inlet holes are connected with the plurality of air outlet holes. When the sealing frame is close to the surface of the workpiece, the detection block can also be synchronously driven to approach the workpiece and contact the surface of the workpiece. When the plurality of air inlet holes of the detection block are moved into the interior of the sealed cavity, the gas inside the sealed cavity can enter through the plurality of air inlet holes and be discharged through the air outlet holes, thereby performing an airtightness detection, and the detection block that is not in contact with the workpiece will not trigger the detection, which can ensure the accuracy and pertinence of the detection and improve the reliability of the overall detection.

[0010] Preferably, a sealing plate is fixedly installed on one side of the detection block, and the sealing plate is located inside the sealing frame and is slidably connected to the inner wall of the sealing frame. When the detection block is in use, the sealing plate can increase the sealing of the connection between one side of the detection block and the sealing frame to ensure that when the detection block is not in use, gas will not leak from between the detection block and the sealing frame, thereby providing more accurate detection results.

[0011] Preferably, the detection block is configured to be in a rectangular shape, and the air outlet is configured to be in a strip shape. The rectangular shape of the detection block and the strip shape of the air outlet can distribute the air pressure more evenly to improve the accuracy and efficiency of detection.

[0012] Preferably, the fixing assembly includes a hydraulic cylinder fixedly mounted on one side of the support frame, the hydraulic cylinder is located on the top of the plurality of detection plates, and a lower pressure plate is fixedly mounted on the output end of the hydraulic cylinder. When performing detection, the lower pressure plate can be driven to move by the hydraulic cylinder so that the lower pressure plate can fix the workpiece, thereby making the workpiece more stable during air tightness detection.

[0013] Preferably, two telescopic guide rods are fixedly installed on one side of the lower pressure plate, and a rubber plate is fixedly installed on the bottom of the lower pressure plate. When the lower pressure plate contacts the surface of the workpiece, the rubber plate can contact the workpiece for buffering to avoid damage to the workpiece surface due to the downward impact force.

[0014] The beneficial effects of the utility model are:

[0015] 1. When in use, the cavity workpiece can be placed on the surface of the test table, and then the cavity workpiece can be tested for air tightness simultaneously through multiple electric push rods and corresponding detection components. During the detection, the detection component can also perform air tightness detection on the part in contact with the workpiece, and the part not in contact with the workpiece is not tested, so that the detection component is adapted to different cavity workpieces. The workpiece can be fixed during air tightness detection through the fixing component, thereby improving the stability of the workpiece during air tightness detection;

[0016] 2. During the inspection, the hydraulic cylinder can be used to drive the lower pressure plate to move, so that the lower pressure plate can fix the workpiece, making the workpiece more stable during the air tightness inspection. When the lower pressure plate contacts the surface of the workpiece, the rubber plate can contact the workpiece for buffering to avoid damage to the workpiece surface due to the downward impact force. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the multi-faceted detection mechanism of the utility model;

[0019] Figure 3This is a schematic diagram of the structure of the electric push rod and the detection assembly of the utility model;

[0020] Figure 4 for Figure 3 A is a schematic diagram of the enlarged structure of the middle part;

[0021] Figure 5 It is a schematic diagram of the structure of the fixing component of the utility model.

[0022] In the figure: 1. testing table; 11. supporting feet; 2. supporting frame; 3. multi-faceted testing mechanism; 31. electric push rod; 32. testing assembly; 321. testing plate; 322. sealing chamber; 323. air pump; 324. sealing frame; 325. testing block; 326. air outlet; 327. air inlet; 328. sealing plate; 33. fixing assembly; 331. hydraulic cylinder; 332. guide rod; 333. lower pressure plate; 334. rubber sheet. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] When implementing: Figure 1-5 As shown, an automatic airtightness detection device for four sides of a workpiece comprises: a detection table 1, a support leg 11 is fixedly installed at the bottom of the detection table 1, a support frame 2 is fixedly installed on the surface of the detection table 1, and a multi-faceted detection mechanism 3 is arranged on one side of the detection table 1 for performing multi-faceted detection of the workpiece at the same time, wherein the multi-faceted detection mechanism 3 comprises a plurality of electric push rods 31 fixedly installed on the surface of the detection table 1, a detection component 32 is arranged at the output end of the electric push rod 31, and a fixing component 33 is arranged on one side of the support frame 2. When in use, a cavity workpiece can be placed on the surface of the detection table 1, and then the cavity workpiece can be simultaneously tested for airtightness by using the plurality of electric push rods 31 and the corresponding detection components 32. When performing the detection, the detection component 32 can also perform airtightness detection on the contact part with the workpiece, and the part not in contact with the workpiece is not detected, so that the detection component 32 is adapted to different cavity workpieces, and the workpiece can be fixed by the fixing component 33 during the airtightness detection, thereby improving the stability of the workpiece during the airtightness detection.

[0025] like Figure 2 , Figure 3 and Figure 4As shown, the detection component 32 includes a detection plate 321 fixedly installed at the output end of the electric push rod 31, a sealed cavity 322 is arranged inside the detection plate 321, an air pump 323 is fixedly installed inside the sealed cavity 322, the output end of the air pump 323 is located inside the sealed cavity 322, a plurality of sealing frames 324 are fixedly installed on one side of the detection plate 321, the plurality of sealing frames 324 are connected with the inside of the sealed cavity 322, a pressure sensor is arranged inside the sealed cavity 322 inside the detection plate 321, and is used to detect the air pressure inside the sealed cavity 322. When performing the detection, the detection plate 321 on one side can be driven by the electric push rod 31 to approach the workpiece, and the air pressure on the four sides of the workpiece can be detected. The electric push rod 31 around the workpiece synchronously drives the corresponding detection plate 321 to approach the workpiece, so that the four sides of the workpiece can be synchronously detected. When the detection plate 321 contacts the surface of the workpiece, gas can be injected into the sealing cavity 322 through the air pump 323, and then the workpiece is airtightly detected through multiple sealing frames 324. The air pressure inside the sealing cavity 322 can be detected by the pressure sensor to detect the airtightness of one side of the workpiece. If the pressure sensor detects a pressure drop, it indicates that the workpiece has an airtightness problem on the contact surface. The detection component 32 also includes a detection block 325 slidably installed inside the sealing frame 324. The sealing frame 324 extends from one side of the detection block 325. The detection block 325 A plurality of air outlet holes 326 are provided on one side of the detection block 325, and air inlet holes 327 are provided on both sides of the detection block 325. The plurality of air inlet holes 327 are connected with the plurality of air outlet holes 326. When the sealing frame 324 is close to the surface of the workpiece, the detection block 325 can be synchronously driven to be close to the workpiece and contact the surface of the workpiece. When the plurality of air inlet holes 327 of the detection block 325 are moved into the interior of the sealing cavity 322, the gas inside the sealing cavity 322 can enter through the plurality of air inlet holes 327 and be discharged through the air outlet holes 326, thereby performing an airtightness detection, and the detection block 325 that is not in contact with the workpiece will not trigger the detection, which can ensure the accuracy and pertinence of the detection and improve the reliability of the overall detection. A sealing plate 328 is fixedly installed on one side of the detection block 325, and the sealing plate 328 is located inside the sealing frame 324 and is slidably connected to the inner wall of the sealing frame 324. When the detection block 325 is in use, the sealing plate 328 can increase the sealing of the connection between one side of the detection block 325 and the sealing frame 324 to ensure that when the detection block 325 is not in use, gas will not leak from between the detection block 325 and the sealing frame 324, thereby providing more accurate detection results. The detection block 325 is configured to be in a rectangular shape, and the air outlet 326 is configured to be in a strip shape. The rectangular shape of the detection block 325 and the strip shape of the air outlet 326 can distribute the air pressure more evenly to improve the accuracy and efficiency of the detection.

[0026] like Figure 2 and Figure 5As shown, the fixing assembly 33 includes a hydraulic cylinder 331 fixedly mounted on one side of the support frame 2, the hydraulic cylinder 331 is located on the top of the multiple detection plates 321, and a lower pressure plate 333 is fixedly mounted on the output end of the hydraulic cylinder 331. When performing detection, the lower pressure plate 333 can be driven to move by the hydraulic cylinder 331, so that the lower pressure plate 333 can fix the workpiece, thereby making the workpiece more stable during air tightness detection. Two telescopic guide rods 332 are fixedly mounted on one side of the lower pressure plate 333, and a rubber plate 334 is fixedly mounted on the bottom of the lower pressure plate 333. When the lower pressure plate 333 contacts the surface of the workpiece, it can contact the workpiece through the rubber plate 334 for buffering to avoid damage to the surface of the workpiece due to the downward impact force.

[0027] When the utility model is in use, during detection, the detection plate 321 on one side can be driven by the electric push rod 31 to approach the workpiece, and the corresponding detection plate 321 can be synchronously driven by the electric push rods 31 located around the workpiece to approach the workpiece, so that the four sides of the workpiece can be synchronously detected. When the detection plate 321 contacts the surface of the workpiece, gas can be injected into the sealing cavity 322 by the air pump 323, and then the workpiece can be airtightly detected by multiple sealing frames 324. The air pressure inside the sealing cavity 322 can be detected by the pressure sensor. The airtightness of one side of the workpiece can be detected. If the pressure sensor detects a pressure drop, it indicates that there is an airtightness problem on the contact surface of the workpiece, and the sealing frame 324 is used to inject gas into the sealing cavity 322. When the detection block 325 approaches the workpiece surface, it can also synchronously drive the detection block 325 to approach the workpiece and contact the workpiece surface. When the multiple air inlet holes 327 of the detection block 325 are moved into the interior of the sealed cavity 322, the gas inside the sealed cavity 322 can enter through the multiple air inlet holes 327 and be discharged through the air outlet holes 326, thereby performing an air tightness test. The detection block 325 that is not in contact with the workpiece will not trigger the test, which can ensure the accuracy and pertinence of the test and improve the reliability of the overall test. When performing the test, the hydraulic cylinder 331 can be used to drive the lower pressing plate 333 to move, so that the lower pressing plate 333 can fix the workpiece, thereby making the workpiece more stable during the air tightness test.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A device for automatically detecting the airtightness of four sides of a workpiece, characterized in that: include: A testing platform (1), wherein a support leg (11) is fixedly mounted on the bottom of the testing platform (1), and a support frame (2) is fixedly mounted on the surface of the testing platform (1); A multi-faceted detection mechanism (3) for performing multi-faceted detection on a workpiece simultaneously, wherein the multi-faceted detection mechanism (3) is arranged on one side of the detection platform (1); The multi-faceted detection mechanism (3) comprises a plurality of electric push rods (31) fixedly mounted on the surface of the detection platform (1), a detection component (32) is arranged at the output end of the electric push rods (31), and a fixing component (33) is arranged on one side of the support frame (2).

2. The automatic airtightness detection device for four sides of a workpiece according to claim 1, characterized in that: The detection assembly (32) comprises a detection plate (321) fixedly mounted on the output end of the electric push rod (31); a sealed cavity (322) is provided inside the detection plate (321); an air pump (323) is fixedly mounted inside the sealed cavity (322); the output end of the air pump (323) is located inside the sealed cavity (322); a plurality of sealing frames (324) are fixedly mounted on one side of the detection plate (321); and the plurality of sealing frames (324) are connected to the inside of the sealed cavity (322).

3. The automatic airtightness detection device for four sides of a workpiece according to claim 2, characterized in that: The detection assembly (32) further comprises a detection block (325) slidably mounted inside the sealing frame (324); one side of the detection block (325) extends out of the sealing frame (324); one side of the detection block (325) is provided with a plurality of air outlet holes (326); both sides of the detection block (325) are provided with air inlet holes (327); and the plurality of air inlet holes (327) are all in communication with the plurality of air outlet holes (326).

4. The automatic airtightness detection device for four sides of a workpiece according to claim 3 is characterized in that: A sealing plate (328) is fixedly mounted on one side of the detection block (325); the sealing plate (328) is located inside the sealing frame (324) and is slidably connected to the inner wall of the sealing frame (324).

5. The automatic airtightness detection device for four sides of a workpiece according to claim 3, characterized in that: The detection block (325) is configured in a rectangular shape, and the air outlet (326) is configured in a strip shape.

6. The automatic airtightness detection device for four sides of a workpiece according to claim 2, characterized in that: The fixing assembly (33) comprises a hydraulic cylinder (331) fixedly mounted on one side of the support frame (2); the hydraulic cylinder (331) is located on top of the plurality of detection plates (321); and a lower pressure plate (333) is fixedly mounted on the output end of the hydraulic cylinder (331).

7. The automatic airtightness detection device for four sides of a workpiece according to claim 6, characterized in that: Two telescopic guide rods (332) are fixedly mounted on one side of the lower pressing plate (333), and a rubber plate (334) is fixedly mounted on the bottom of the lower pressing plate (333).

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