An air tightness testing machine for rubber production detection

Abstract

The application relates to the technical field of rubber production detection, and discloses an air tightness testing machine for rubber production detection, which comprises a fixed base, the top end of the fixed base is fixedly connected with an air tightness detector, the middle part of the top end of the fixed base is fixedly connected with a supporting plate, the side surface of the supporting plate is fixedly connected with a moving mechanism, the side surface of the moving mechanism is fixedly connected with a detection mechanism, and the bottom end of the detection mechanism is movably connected with a feeding mechanism; when large rubber products are detected, the upper electromagnet is electrified, repulsive force is generated between the upper electromagnet and the upper moving plate, the outer sealing cylinder is driven by the upper moving plate to move downwards and contact the rubber products, the rubber products can be detected at this time, when small rubber products are detected, the lower electromagnet is electrified, magnetic force is generated between the lower electromagnet and the lower moving plate, and then the inner sealing cylinder is used for detection, so that the rubber products of different sizes can be detected.

Description

Technical Field

[0001] This invention relates to the field of rubber production testing technology, and more specifically to an airtightness testing machine for rubber production testing. Background Technology

[0002] Rubber is a highly elastic polymer material with reversible deformation. It is elastic at room temperature and can produce large deformation under small external forces. It can return to its original shape after the external force is removed. Rubber is a completely amorphous polymer with a low glass transition temperature and a large molecular weight. Rubber is divided into two types: natural rubber and synthetic rubber. Natural rubber is made by extracting the gum from plants such as rubber trees and rubber grass. After production, rubber products need to undergo airtightness testing before leaving the factory to prevent substandard products from entering the market. During the airtightness test, all pores in the rubber product are sealed, and then gas at a certain pressure is injected into the workpiece. After a period of time, the gas pressure inside the rubber part is checked to see if it is within the required range, thus determining whether the rubber product is qualified. However, traditional airtightness testing methods for rubber products have the following problems: When testing the air tightness of rubber products, the rubber product needs to be placed on the testing table and fixed around its perimeter. After gas is introduced, the gas pressure is measured to determine whether there is any leakage in the rubber product. Traditional testing devices cannot test rubber products of different sizes. Small testing devices cannot fully test large rubber products, while large devices cannot compact small rubber products. After the rubber products are tested, they are pressed onto the testing table due to the compaction process. Small products can be removed manually by workers, while large rubber products are more difficult to remove. Rubber products that do not meet the airtightness standard can be removed by force without worrying about damage. However, qualified rubber products are easily damaged when removed by force, which can cause secondary damage to rubber products that have passed the airtightness test. Summary of the Invention

[0003] In order to overcome the above-mentioned defects of the prior art, the embodiments of the present invention provide an airtightness testing machine for rubber production testing, so as to solve the technical problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an air tightness testing machine for rubber production testing, comprising a fixed base, an air tightness tester fixedly connected to the top of the fixed base, a support plate fixedly connected to the middle of the top of the fixed base, a moving mechanism fixedly connected to the side of the support plate, a testing mechanism fixedly connected to the side of the moving mechanism, and a feeding mechanism movably connected to the bottom of the testing mechanism. The moving mechanism includes a fixed box for fixing, an output motor is fixedly connected to the top of the fixed box, an output shaft is fixedly connected to the bottom of the output motor, a first gear is fixedly connected to the side of the output shaft, a second gear meshes with the side of the first gear, a moving screw is fixedly connected inside the second gear, a moving block is threadedly connected to the side of the moving screw, and the side of the moving block is fixedly connected to the side of the detection mechanism. The detection mechanism includes a connecting block that is fixedly connected to the moving block. An outer sealing sleeve is fixedly connected to the side of the connecting block. A sealing cover plate is fixedly connected to the top of the outer sealing sleeve. An inner sealing sleeve is fixedly connected to the bottom of the sealing cover plate. An outer sealing cylinder is movably connected to the bottom of the outer sealing sleeve. An inner sealing cylinder is movably connected to the bottom of the inner sealing sleeve. An upper moving plate is fixedly connected to the top of the outer sealing cylinder. A lower moving plate is fixedly connected to the top of the inner sealing cylinder.

[0005] In a preferred embodiment, the fixed box has a sliding groove on the side near the detection mechanism for the movable block to move, the second gear can only move up and down within the fixed box, and the output motor can control the output shaft to rotate in both directions.

[0006] In a preferred embodiment, a connecting plate is fixedly connected to the bottom end of the sealing cover, an upper electromagnet is fixedly connected to the top end of the side of the connecting plate, a lower electromagnet is fixedly connected to the bottom end of the side of the connecting plate, the bottom end of the upper electromagnet is in contact with the top end of the upper movable plate, and the bottom end of the lower electromagnet is in contact with the top end of the lower movable plate.

[0007] In a preferred embodiment, a one-way valve is fixedly connected to the top of the sealing cover plate. The one-way valve allows gas between the sealing cover plate and the outer sealing sleeve to flow to the outside, and prevents gas from the outside from entering the interior through the one-way valve.

[0008] In a preferred embodiment, both the lower moving plate and the upper moving plate are magnetic, and when the upper electromagnet is energized in the positive direction, a magnetic repulsion force is generated between it and the upper moving plate, and when the lower electromagnet is energized in the positive direction, a magnetic repulsion force is generated between it and the lower moving plate.

[0009] In a preferred embodiment, the outer sealing sleeve has a groove for the lower moving plate to move, and the inner sealing sleeve has a groove adapted to the lower moving plate. The outer sealing cylinder and the outer sealing sleeve are in a sealed state, and the inner sealing sleeve and the inner sealing cylinder are in a sealed state.

[0010] In a preferred embodiment, a first bevel tooth is fixedly connected to the bottom end of the output shaft, a second bevel tooth meshes with the side of the first bevel tooth, a feeding screw is fixedly connected inside the second bevel tooth, a movable connecting block is threadedly connected to the side of the feeding screw, and a feeding plate is fixedly connected to the side of the movable connecting block.

[0011] In a preferred embodiment, a support block is movably connected to the side of the feeding screw away from the second bevel tooth, a limit rod is fixedly connected to the side of the support block, and a limit hole adapted to the limit rod is provided inside the feeding plate.

[0012] In a preferred embodiment, a fixed circular plate is fixedly connected to one end of the feeding plate away from the side of the moving block, and a servo motor is fixedly connected to the other end of the feeding plate away from the side of the moving block. A rotating shaft is fixedly connected to the side of the servo motor, and a rotating plate is fixedly connected to the side of the rotating shaft.

[0013] The technical effects and advantages of this invention are as follows: 1. This invention, by comprising an upper electromagnet, a lower electromagnet, a lower moving plate, and an upper moving plate, enables the detection of large rubber products. When the upper electromagnet is energized, a magnetic repulsion force is generated between it and the upper moving plate. The upper moving plate then drives the outer sealing cylinder to move downward and contact the rubber product, thus enabling the detection of large rubber products. When detecting small rubber products, the lower electromagnet is energized and a magnetic force is generated between it and the lower moving plate, allowing the product to be detected through the inner sealing cylinder. Therefore, this application can detect rubber products of different sizes. 2. This invention, equipped with a one-way valve, an outer sealing cylinder, and an outer sealing sleeve, allows for the testing of large rubber products. When air tightness testing is performed, air is introduced into the rubber product, causing it to bulge upwards. This reduces the gas space within the outer sealing cylinder or sleeve, and the gas is discharged through the one-way valve. After discharge, the air tightness testing stops applying gas, and the rubber product resets. This creates a negative pressure within the outer sealing cylinder or sleeve, which, when moving upwards, sucks the rubber product up, allowing it to be picked up without damage. Furthermore, this invention, equipped with a first conical tooth, a moving connecting block, and a feeding plate, allows for the rotation of the output shaft during testing. This rotation, via the first conical tooth and the feeding screw, moves the feeding screw, which in turn moves the moving connecting block. The moving connecting block then moves the feeding plate, causing the sucked-up rubber product to fall onto the feeding plate, automatically delivering the product and improving work efficiency. Attached Figure Description Attached Figure Description Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 This is a schematic diagram of the moving mechanism structure of the present invention.

[0016] Figure 3 This is a bottom view of the detection mechanism structure of the present invention.

[0017] Figure 4 This is a schematic diagram of the outer sealing sleeve structure of the present invention.

[0018] Figure 5 This is a schematic diagram of the exploded structure of the detection mechanism of the present invention.

[0019] Figure 6 This is a schematic diagram of the electromagnet structure of the present invention.

[0020] Figure 7 This is a schematic diagram of the back structure of the feeding mechanism of the present invention.

[0021] Figure 8 This is a front view of the feeding mechanism of the present invention.

[0022] The attached figures are labeled as follows: 1. Fixed base; 2. Air tightness tester; 3. Support plate; 4. Moving mechanism; 401. Fixed box; 402. Output motor; 403. Output shaft; 404. First gear; 405. Second gear; 406. Moving screw; 407. Moving block; 5. Detection mechanism; 501. Connecting block; 502. Outer sealing sleeve; 503. Inner sealing sleeve; 504. Outer sealing cylinder; 505. Inner sealing cylinder; 506. Lower moving part. 507. Sealing cover plate; 508. One-way valve; 509. Upper moving plate; 510. Connecting plate; 511. Upper electromagnet; 512. Lower electromagnet; 6. Feeding mechanism; 601. First bevel gear; 602. Second bevel gear; 603. Feeding screw; 604. Moving connecting block; 605. Support block; 606. Limiting rod; 607. Feeding plate; 608. Fixed circular plate; 609. Rotating shaft; 610. Servo motor; 611. Rotating plate. Detailed Implementation Detailed Implementation The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The air tightness testing machine for rubber production testing involved in the present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Reference Figure 1 and Figure 2This invention provides an airtightness testing machine for rubber production testing, comprising a fixed base 1, an airtightness detector 2 fixedly connected to the top of the fixed base 1, a support plate 3 fixedly connected to the middle of the top of the fixed base 1, a moving mechanism 4 fixedly connected to the side of the support plate 3, a testing mechanism 5 fixedly connected to the side of the moving mechanism 4, and a feeding mechanism 6 movably connected to the bottom of the testing mechanism 5. The moving mechanism 4 includes a fixed box 401 for fixing, an output motor 402 fixedly connected to the top of the fixed box 401, and an output shaft 403 fixedly connected to the bottom of the output motor 402. A first gear 404 is fixedly connected to the side of the output shaft 403. A second gear 405 meshes with the side of the first gear 404. A moving screw 406 is fixedly connected inside the second gear 405. A moving block 407 is threadedly connected to the side of the moving screw 406. The side of the moving block 407 is fixedly connected to the side of the detection mechanism 5. A sliding groove is provided on the side of the fixed box 401 near the detection mechanism 5, allowing the moving block 407 to move. The second gear 405 can only move up and down within the fixed box 401. The output motor 402 can control the output shaft 403 to rotate in both directions.

[0025] In this embodiment of the application, during the detection, the output motor 402 drives the output shaft 403 to rotate. When the output shaft 403 rotates, it drives the moving screw 406 to rotate. The moving screw 406 is threadedly connected to the moving block 407, and the fixed box 401 limits the moving block 407, thus causing the moving block 407 to move. The output motor 402 controls the output shaft 403 to rotate in both directions, thereby causing the moving block 407 to move up and down for repeated detection.

[0026] Reference Figure 3 - Figure 6The detection mechanism 5 includes a connecting block 501 fixedly connected to the movable block 407. An outer sealing sleeve 502 is fixedly connected to the side of the connecting block 501. A sealing cover plate 507 is fixedly connected to the top of the outer sealing sleeve 502. An inner sealing sleeve 503 is fixedly connected to the bottom of the sealing cover plate 507. An outer sealing cylinder 504 is movably connected to the bottom of the outer sealing sleeve 502. An inner sealing cylinder 505 is movably connected to the bottom of the inner sealing sleeve 503. An upper moving plate 509 is fixedly connected to the top of the outer sealing cylinder 504. A lower moving plate 506 is fixedly connected to the top of the inner sealing cylinder 505. A connecting plate 510 is fixedly connected to the bottom of the sealing cover plate 507. An upper electromagnet 511 is fixedly connected to the top of the side of the connecting plate 510. A lower electromagnet 512 is fixedly connected to the bottom of the side of the connecting plate 510. The bottom of the upper electromagnet 511 is in contact with the top of the upper moving plate 509. The bottom end of the lower electromagnet 512 is in contact with the top end of the lower moving plate 506. A one-way valve 508 is fixedly connected to the top end of the sealing cover plate 507. The one-way valve 508 only allows the gas between the sealing cover plate 507 and the outer sealing sleeve 502 to flow to the outside, and prevents the outside gas from entering the interior through the one-way valve 508. Both the lower moving plate 506 and the upper moving plate 509 are magnetic. When the upper electromagnet 511 is energized in the positive direction, a magnetic repulsion force is generated between it and the lower moving plate 506. When the lower electromagnet 512 is energized in the positive direction, a magnetic repulsion force is generated between it and the upper moving plate 509. A sliding groove is opened in the outer sealing sleeve 502 to allow the lower moving plate 506 to move. A sliding groove adapted to the lower moving plate 506 is opened in the interior of the inner sealing sleeve 503. The outer sealing cylinder 504 and the outer sealing sleeve 502 are in a sealed state. The inner sealing sleeve 503 and the inner sealing cylinder 505 are in a sealed state.

[0027] In this embodiment, when testing small rubber products, they are easily removed when pressed against the airtightness tester 2. Therefore, the lower electromagnet 512 is energized in the positive direction, causing the lower moving plate 506 to move downwards. As the lower moving plate 506 moves downwards, it causes the inner sealing cylinder 505 to move downwards, thus fixing the small rubber product for testing. However, when testing large rubber products, the upper electromagnet 511 is energized in the positive direction, causing the upper moving plate 509 to move downwards. The upper moving plate 509 causes the outer sealing cylinder 504 to move downwards. When the outer sealing cylinder 504 moves downwards and contacts the airtightness tester 2, the outer sealing cylinder 504 and the outer sealing sleeve 502... The combination of the sealing cover plate 507 and the outer sealing cylinder 504 forms a sealed space. Therefore, when the large rubber product under the outer sealing cylinder 504 is tested for air tightness, the upward bulging will increase the pressure inside the outer sealing cylinder 504. As a result, the gas will be discharged from the one-way valve 508. After the test, the air tightness tester 2 stops supplying air to the large rubber product, and the large rubber product will reset. The entire testing mechanism 5 moves upward, and the large rubber product will reset. At this time, a negative pressure is generated inside the outer sealing cylinder 504, and the one-way valve 508 prevents gas from entering the outer sealing cylinder 504. The negative pressure causes the large rubber product to move upward. The unqualified large rubber product will leak air and will not move. It can be removed by force.

[0028] Reference Figure 6 and Figure 7 The bottom end of the output shaft 403 is fixedly connected to a first bevel tooth 601, and a second bevel tooth 602 is meshed on the side of the first bevel tooth 601. A feeding screw 603 is fixedly connected inside the second bevel tooth 602. A moving block 604 is threadedly connected to the side of the feeding screw 603. A feeding plate 607 is fixedly connected to the side of the moving block 604. A support block 605 is movably connected to the side of the feeding screw 603 away from the second bevel tooth 602. A limit rod 606 is fixedly connected to the side of the support block 605. A limit hole adapted to the limit rod 606 is opened inside the feeding plate 607. A fixed circular plate 608 is fixedly connected to one end of the feeding plate 607 away from the moving block 604, and a servo motor 610 is fixedly connected to the other end of the feeding plate 607 away from the moving block 604. A rotating shaft 609 is fixedly connected to the side of the servo motor 610, and a rotating plate 611 is fixedly connected to the side of the rotating shaft 609.

[0029] In this embodiment, when the output shaft 403 rotates, it drives the detection mechanism 5 to move up and down, and at the same time drives the feeding mechanism 6 to move horizontally. When the detection mechanism 5 moves upward, the feeding mechanism 6 moves below it. When the detection mechanism 5 moves downward, the feeding mechanism 6 moves away to prevent the detection mechanism 5 from contacting the feeding mechanism 6 and being damaged. When the feeding mechanism 6 moves below the detection mechanism 5, the outer sealing cylinder 504 and the inner sealing cylinder 505 move upward. Therefore, the large rubber product will fall onto the feeding plate 607 and be sent away by the feeding plate 607 as the detection mechanism 5 moves again. The servo motor 610 starts and drives the rotating shaft 609 to rotate. The rotating shaft 609 drives the rotating plate 611 to rotate. The rotating plate 611 pushes the large rubber product to the side for collection.

[0030] The working principle of this invention is as follows: When testing rubber products, the output motor 402 starts and drives the output shaft 403 to rotate. When the output shaft 403 rotates, it drives the second gear 405 to rotate through the first gear 404. When the second gear 405 rotates, it drives the moving screw 406 to rotate. When the moving screw 406 rotates, it causes the moving block 407 in the fixed box 401 to move. When the moving block 407 moves, it drives the testing mechanism 5 to move up and down and perform testing. When testing rubber products, the upper electromagnet 511 is energized in the forward direction and generates a magnetic repulsion force between itself and the upper moving plate 509, while the lower electromagnet 512 is energized in the reverse direction and generates a magnetic attraction force between itself and the lower moving plate 506. The opposite occurs when the upper electromagnet 511 and the lower electromagnet 512 are energized in the reverse direction. When the upper moving plate 509 moves the outer sealing cylinder 504 downward, large rubber products are tested. When the lower moving plate 506 moves the inner sealing cylinder 505 downward, small rubber products are tested. After testing small rubber products, they can be taken out directly. However, after testing large rubber products, the rubber products on the airtightness tester 2 bulge upwards. At this time, the gas in the inner sealing sleeve 503 is squeezed out from the one-way valve 508. After testing, the rubber products are reset, which creates a negative pressure in the inner sealing sleeve 503, which sucks up the large rubber products. As the large rubber product moves upward along with the outer sealing cylinder 504, when it reaches its highest point, the outer sealing cylinder 504 causes the large rubber product to move upward as well. This reduces the space inside the outer sealing cylinder 504, releasing the negative pressure. The large rubber product then falls onto the moving connecting block 604. When the product is inspected again, the output shaft 403 rotates, causing the first bevel gear 601 to rotate. The first bevel gear 601 then rotates the second bevel gear 602, causing the feeding screw 603 to rotate. The rotating screw 603, through the moving connecting block 604, moves the feeding plate 607. Therefore, the inspection mechanism 5 descends again for inspection, while the feeding plate 607 carries away the large rubber product. After the feeding plate 607 is removed, the servo motor 610 starts, driving the rotating shaft 609 to rotate. The rotating shaft 609 then drives the rotating plate 611 to rotate, pushing the large rubber product to the side for collection.

[0031] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0032] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An airtightness testing machine for rubber production testing, comprising a fixed base (1), characterized in that: An airtightness detector (2) is fixedly connected to the top of the fixed base (1), a support plate (3) is fixedly connected to the middle of the top of the fixed base (1), a moving mechanism (4) is fixedly connected to the side of the support plate (3), a detection mechanism (5) is fixedly connected to the side of the moving mechanism (4), and a feeding mechanism (6) is movably connected to the bottom of the detection mechanism (5). The moving mechanism (4) includes a fixed box (401) for fixing. An output motor (402) is fixedly connected to the top of the fixed box (401). An output shaft (403) is fixedly connected to the bottom of the output motor (402). A first gear (404) is fixedly connected to the side of the output shaft (403). A second gear (405) meshes with the side of the first gear (404). A moving screw (406) is fixedly connected inside the second gear (405). A moving block (407) is threadedly connected to the side of the moving screw (406). The side of the moving block (407) is fixedly connected to the side of the detection mechanism (5). The detection mechanism (5) includes a connecting block (501) fixedly connected to the moving block (407). An outer sealing sleeve (502) is fixedly connected to the side of the connecting block (501). A sealing cover plate (507) is fixedly connected to the top of the outer sealing sleeve (502). An inner sealing sleeve (503) is fixedly connected to the bottom of the sealing cover plate (507). An outer sealing cylinder (504) is movably connected to the bottom of the outer sealing sleeve (502). An inner sealing cylinder (505) is movably connected to the bottom of the inner sealing sleeve (503). An upper moving plate (509) is fixedly connected to the top of the outer sealing cylinder (504). A lower moving plate (506) is fixedly connected to the top of the inner sealing cylinder (505).

2. The airtightness testing machine for rubber production testing according to claim 1, characterized in that: The fixed box (401) has a sliding groove on the side near the detection mechanism (5) for the movable block (407) to move. The second gear (405) can only move up and down inside the fixed box (401). The output motor (402) can control the output shaft (403) to rotate in both directions.

3. The airtightness testing machine for rubber production testing according to claim 2, characterized in that: The bottom end of the sealing cover (507) is fixedly connected to a connecting plate (510), the top end of the side of the connecting plate (510) is fixedly connected to an upper electromagnet (511), the bottom end of the side of the connecting plate (510) is fixedly connected to a lower electromagnet (512), the bottom end of the upper electromagnet (511) is in contact with the top end of the upper moving plate (509), and the bottom end of the lower electromagnet (512) is in contact with the top end of the lower moving plate (506).

4. The airtightness testing machine for rubber production testing according to claim 3, characterized in that: A one-way valve (508) is fixedly connected to the top of the sealing cover (507). The one-way valve (508) allows the gas between the sealing cover (507) and the outer sealing sleeve (502) to flow to the outside, and prevents the gas from the outside from entering the interior through the one-way valve (508).

5. The airtightness testing machine for rubber production testing according to claim 4, characterized in that: Both the lower moving plate (506) and the upper moving plate (509) are magnetic. When the upper electromagnet (511) is energized in the positive direction, a magnetic repulsion force is generated between it and the upper moving plate (509). When the lower electromagnet (512) is energized in the positive direction, a magnetic repulsion force is generated between it and the lower moving plate (506).

6. The airtightness testing machine for rubber production testing according to claim 1, characterized in that: The outer sealing sleeve (502) has a sliding groove for the lower moving plate (506) to move, and the inner sealing sleeve (503) has a sliding groove that matches the lower moving plate (506). The outer sealing cylinder (504) and the outer sealing sleeve (502) are in a sealed state, and the inner sealing sleeve (503) and the inner sealing cylinder (505) are in a sealed state.

7. The airtightness testing machine for rubber production testing according to claim 1, characterized in that: The bottom end of the output shaft (403) is fixedly connected to a first bevel tooth (601), the side of the first bevel tooth (601) is engaged with a second bevel tooth (602), the inside of the second bevel tooth (602) is fixedly connected to a feeding screw (603), the side of the feeding screw (603) is threadedly connected to a moving connecting block (604), and the side of the moving connecting block (604) is fixedly connected to a feeding plate (607).

8. The airtightness testing machine for rubber production testing according to claim 7, characterized in that: The feeding screw (603) is movably connected to a support block (605) on the side away from the second bevel tooth (602). A limit rod (606) is fixedly connected to the side of the support block (605). A limit hole adapted to the limit rod (606) is opened inside the feeding plate (607).

9. An airtightness testing machine for rubber production testing according to claim 8, characterized in that: A fixed circular plate (608) is fixedly connected to one end of the feeding plate (607) away from the side of the moving connecting block (604), and a servo motor (610) is fixedly connected to the other end of the feeding plate (607) away from the side of the moving connecting block (604). A rotating shaft (609) is fixedly connected to the side of the servo motor (610), and a rotating plate (611) is fixedly connected to the side of the rotating shaft (609).

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