A detection device for rubber product manufacturing and a method of using the same

Abstract

The present application relates to the technical field of detection device, especially to a detection device for rubber product manufacturing and a using method thereof, which comprises a base plate, a pair of sliding blocks, one of which is in sliding connection with the base plate and the other is in fixed connection with the base plate, a mounting column fixedly installed on the sliding block, a top plate fixedly installed on the mounting column, a placing table fixedly installed on the sliding block, rubber placed on the placing table, an extension rod fixedly installed on the base plate, and one end of the extension rod in fixed connection with the sliding block. The present application effectively solves the technical problems of self-weight stress, friction interference, position deviation and complicated operation in the existing rubber tensile detection, improves the detection accuracy and stability, simplifies the operation process, and improves the equipment versatility and reliability.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology, and in particular to a testing device for manufacturing rubber products and its method of use. Background Technology

[0002] In the manufacturing process of rubber products, tensile properties are one of the core indicators for measuring the quality of rubber products. They directly determine the service life, load-bearing capacity and safety of rubber products. Therefore, before leaving the factory, rubber products must be accurately tested for properties such as tensile strength and tensile modulus by professional testing equipment to ensure that the products meet industry standards and usage requirements.

[0003] Currently, the tensile testing devices on the market are either vertical or horizontal. When the rubber to be tested is heavy, vertical testing causes the rubber's own weight to act along the sample's axial direction (tension direction). This is equivalent to the sample being subjected to a continuous pre-tension force due to its own weight before the tensile test, resulting in additional axial stress inside the sample. Due to its own weight, the rubber sample is prone to natural sagging and offset, leading to clamping position deviation and causing off-center loading during the tensile process, which exacerbates the testing error. In horizontal testing, the rubber needs to be placed horizontally on the testing platform. When performing tensile testing, the rubber will rub against the support platform, which will interfere with the tensile force value detection, causing fluctuations in the force-displacement curve and further affecting the testing accuracy. Therefore, this application proposes a testing device for manufacturing rubber products and its usage method. Summary of the Invention

[0004] The purpose of this invention is to address the problems of low detection accuracy, cumbersome operation, uneven support, and poor versatility in the prior art, and to propose a testing device for rubber product manufacturing and its usage method.

[0005] The technical solution of the present invention: A testing device for manufacturing rubber products, comprising a base plate and a pair of sliders, one of which is slidably connected to the base plate and the other is fixedly connected to the base plate. A mounting column is fixedly installed on the slider, and a top plate is fixedly installed on the mounting column. A placement platform is fixedly installed on the slider, and rubber is placed on the placement platform. A telescopic rod is fixedly installed on the base plate, one end of which is fixedly connected to the slider. A tension sensor is provided between the telescopic rod and the slider. A correction mechanism is provided on the slider to fix the rubber while correcting its position. An auxiliary device is provided between the placement platforms to support the middle of the rubber without friction.

[0006] Optionally, the auxiliary device includes a pair of connecting blocks mounted on a base plate. The connecting blocks are fixedly connected to two sliders respectively. A connecting plate is fixedly mounted on one side of each connecting block. A connecting rod is hinged to the top of the connecting plate. One end of each connecting rod is rotatably connected to the other. An mounting block is slidably mounted on the base plate. A support rod is fixedly mounted on the mounting block. The support rod is perpendicular to the mounting block. A short rod is slidably mounted on the support rod. One end of the short rod is rotatably connected to the bottom of the connecting rod. A connecting cavity is fixedly mounted on one side of the mounting block. The connecting cavity is hollow and has multiple equidistantly arranged air outlet slots. An air pump is fixedly mounted on one side of the base plate. A connecting pipe is fixedly mounted on one end of the air pump. One end of the connecting pipe communicates with the connecting cavity.

[0007] Optionally, the correction mechanism includes a column fixedly mounted on a top plate, a groove on the column, a first threaded rod rotatably mounted in the groove, a support block slidably mounted in the groove, the support block being threadedly connected to the first threaded rod, a fixing plate fixedly mounted at one end of the support block, a positioning block slidably mounted at the bottom of the fixing plate, the positioning block having anti-slip texture, a first gear rotatably mounted on the top plate, the first gear being fixedly connected to the first threaded rod, a second gear rotatably mounted on the top plate, the first gear meshing with the second gear, a positioning plate slidably mounted on one side of the mounting column, a second threaded rod rotatably mounted on the top plate, the second threaded rod being threadedly connected to the positioning plate, guide rods symmetrically hinged to both sides of the bottom of the positioning plate, guide blocks symmetrically slidably mounted on the placement platform, one end of the guide rod being hinged to the guide block, a side plate fixedly mounted on one side of the guide block, and a correction plate slidably mounted on one side of the side plate.

[0008] Optionally, a fixing frame is fixedly installed on the top plate, and a motor is fixedly installed at one end of the fixing frame. The output shaft of the motor is fixedly connected to the first gear.

[0009] Optionally, a first spring is fixedly installed at the bottom of the fixing plate, and one end of the first spring is fixedly connected to the positioning block.

[0010] Optionally, a plurality of second springs are fixedly installed on one side of the side plate, and one end of the second spring is fixedly connected to the straightening plate.

[0011] Optionally, a connecting groove is provided on one side of the mounting column, and the positioning plate is slidably connected to the connecting groove.

[0012] Optionally, a positioning groove is provided on one side of the base plate, and the connecting block is located in the positioning groove, with one of the connecting blocks slidably connected to the positioning groove.

[0013] Optionally, a guide groove is provided on the placement platform, and the guide block is slidably connected to the guide groove.

[0014] Optionally, a method of using a testing device for manufacturing rubber products includes the following steps; Step 1: Place both ends of the rubber to be tested on the placement platform, and place the middle part of the rubber on the connecting cavity.

[0015] Step 2: Start the motor. The motor drives the first gear and the second gear to rotate, which in turn drives the first threaded rod and the second threaded rod to rotate. The straightening plates on one side of the side plate move closer to each other, straightening the position of the rubber on the placement table to make it centered. At the same time, the positioning block at the bottom of the first spring squeezes the rubber to fix it, completing the clamping.

[0016] Step 3: Start the telescopic rod to move the slider, pulling the rubber to one side. The slider moves the bottom connecting cavity to the middle of the rubber. Start the air pump to draw air into the connecting cavity. The gas in the connecting cavity is discharged upward to form an air film to support the bottom of the rubber.

[0017] Step 4: The tension sensor between the telescopic rod and the slider detects and records the tension during the rubber stretching process, thus completing the rubber stretching test.

[0018] Compared with the prior art, the present invention has the following beneficial technical effects: This invention enables the first and second threaded rods to rotate synchronously by rotating the first gear. On one hand, the guide rod pushes the guide block, side plate, and straightening plate closer together, simultaneously squeezing both ends of the rubber and automatically centering the rubber in the middle of the placement platform without manual adjustment, thus avoiding operational errors and pre-stretch deformation caused by manual straightening. On the other hand, the support block drives the fixing plate and positioning block to move downward, firmly fixing both ends of the rubber and ensuring that the rubber position is stable after clamping, preventing loosening or displacement during stretching.

[0019] Furthermore, by using an air pump, connecting cavity, and air outlet groove in conjunction, a uniform airflow is blown towards the bottom of the rubber during the tensile testing stage. The airflow thrust counteracts the rubber's own weight, keeping the rubber in a completely suspended state. This completely avoids the tensile and bending stresses caused by the rubber sagging under its own weight, ensuring that the rubber is tested in an ideal initial state with zero additional stress. This fundamentally solves the problems of force deviation and inaccurate tensile modulus caused by self-weight stress in traditional testing. During the tensile process, the rubber is completely suspended and does not have physical contact with any object, completely eliminating the interference of frictional resistance between the traditional support structure and the rubber on the tensile test, and avoiding the underestimation of tensile force caused by friction.

[0020] Furthermore, through the linkage of components such as connecting blocks, connecting plates, connecting rods, short rods, and mounting blocks, automatic centering of the connecting cavity during the stretching process is achieved: when the slider moves, it drives the connecting plate to move synchronously. Through two hinged connecting rods and a vertically set short rod, the mounting block and connecting cavity are forced to always remain at the geometric center position in the length direction of the rubber. No matter how long the rubber is stretched, the connecting cavity can be accurately aligned with the middle of the rubber, so that the airflow thrust on the bottom of the rubber is evenly distributed, avoiding rubber offset and vibration caused by uneven airflow distribution, and further improving the detection accuracy.

[0021] This invention effectively solves the technical problems existing in the current rubber tensile testing, such as self-weight stress, friction interference, positional deviation, and cumbersome operation. While improving the testing accuracy and stability, it simplifies the operation process and improves the versatility and reliability of the equipment. Attached Figure Description

[0022] Figure 1 Schematic diagram of a testing device for manufacturing rubber products Figure 1 ; Figure 2 Schematic diagram of a testing device for manufacturing rubber products Figure 2 ; Figure 3 Schematic diagram of a testing device for manufacturing rubber products Figure 3 ; Figure 4 This is a schematic diagram of the connecting cavity structure; Figure 5 This is a schematic diagram of the airflow direction structure of the connecting cavity; Figure 6 for Figure 2 A magnified schematic diagram of the partial structure at point A in the middle; Figure 7 for Figure 2 A magnified schematic diagram of the local structure at point B; Figure 8 for Figure 1 A magnified schematic diagram of the structure at point C.

[0023] Reference numerals: 1. Base plate; 2. Mounting column; 3. Telescopic rod; 4. Slider; 5. Motor; 6. First gear; 7. Second gear; 8. Second threaded rod; 9. Positioning plate; 10. Guide rod; 11. Placement platform; 12. Guide block; 13. Guide groove; 14. Side plate; 15. Second spring; 16. Correction plate; 17. Column; 18. First threaded rod; 19. Support block; 20. Fixing plate; 21. First spring; 22. Positioning block; 23. Positioning groove; 24. Connecting plate; 25. Connecting block; 26. Connecting rod; 27. Support rod; 28. Mounting block; 29. ​​Connecting cavity; 30. Air outlet groove; 31. Fixing frame; 32. Slide groove; 33. Connecting groove; 34. Top plate; 35. Connecting pipe; 36. Air pump; 37. Rubber; 38. Short rod. Detailed Implementation

[0024] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] The components of the embodiments of the invention described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0026] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] Example 1 like Figure 1 , Figure 2 ,and Figure 3 As shown, the present invention proposes a testing device for manufacturing rubber products, including a base plate 1 and a pair of sliders 4. One slider 4 is slidably connected to the base plate 1, and the other slider 4 is fixedly connected to the base plate 1. A mounting post 2 is fixedly installed on the slider 4, and a top plate 34 is fixedly installed on the mounting post 2. A placement platform 11 is fixedly installed on the slider 4, and a rubber 37 is placed on the placement platform 11. A telescopic rod 3 is fixedly installed on the base plate 1, and one end of the telescopic rod 3 is fixedly connected to the slider 4. A tension sensor is provided between the telescopic rod 3 and the slider 4 to detect the tension of the telescopic rod 3 on the slider 4. A correction mechanism is provided on the slider 4 to fix the rubber 37 and correct its position. An auxiliary device is provided between the placement platforms 11 to support the middle of the rubber 37 without friction.

[0031] Example 2 like Figure 3 , Figure 4 , Figure 5 and Figure 8As shown, the auxiliary device includes a pair of connecting blocks 25 mounted on the base plate 1. The connecting blocks 25 are fixedly connected to two sliders 4 respectively. A connecting plate 24 is fixedly installed on one side of the connecting blocks 25. A connecting rod 26 is hinged to the top of the connecting plate 24. One end of the two connecting rods 26 is rotatably connected to each other. An mounting block 28 is slidably mounted on the base plate 1. A support rod 27 is fixedly mounted on the mounting block 28. The support rod 27 is perpendicular to the mounting block 28. A short rod 38 is slidably mounted on the support rod 27. One end of the short rod 38 is rotatably connected to the bottom of the connecting rod 26. A connecting cavity 29 is fixedly installed on one side of the mounting block 28. The connecting cavity 29 is hollow and has openings in it. Multiple equidistant air outlets 30 are arranged. An air pump 36 is fixedly installed on one side of the base plate 1. A connecting pipe 35 is fixedly installed at one end of the air pump 36, and one end of the connecting pipe 35 is connected to the connecting cavity 29. When the rubber 37 is clamped and needs to be subjected to tensile testing, the telescopic rod 3 is activated. The piston rod of the telescopic rod 3 drives the slider 4 to move, activating the air pump 36. The air pump 36 draws air into the connecting pipe 35 and finally discharges it into the connecting cavity 29, exiting through the air outlets 30 on the connecting cavity 29. The discharged gas forms a thrust at the bottom of the rubber, lifting the rubber 37 upwards. The thrust counteracts the weight of the rubber 37, so the rubber 37 is in a suspended state. When the weight of the rubber 37 is large... The rubber 37 exhibits a mid-section sagging phenomenon, eliminating the stress caused by the weight of the rubber 37 and improving the accuracy of the test. Simultaneously, as the slider 4 moves to one side, it drives the connecting plate 24 on one side to move as well. The connecting rod 26 on the connecting plate 24 generates tension. Because the two connecting rods 26 are rotatably connected, and the short rod 38 at the connection point is perpendicular to the mounting block 28, the short rod 38 remains in the middle of the two connecting rods 26 as the connecting plate 24 moves. The short rod 38 drives the connecting cavity 29 on one side to move synchronously, ensuring that the connecting cavity 29 remains in the middle of the rubber 37 during the stretching process, maintaining an even air pressure on the rubber 37 and improving efficiency. The high accuracy of the test ensures that the rubber is subjected to tensile testing in an ideal initial state with zero additional stress. This fundamentally solves the problems of force deviation and inaccurate tensile modulus caused by self-weight stress in traditional testing. The suspended rubber does not come into contact with any object during the tensile process, further eliminating the influence of friction between the connecting cavity 29 and the rubber 37. This completely eliminates the interference of frictional resistance between the traditional support structure and the rubber 37 on the tensile test, avoiding the underestimation of tensile force caused by friction. The output power of the air pump 36 can be adjusted according to the suspension state of the rubber 37. When the fluctuation is too large, the output power of the air pump 36 is reduced, and when the rubber is too heavy, the output power of the air pump 36 is increased.

[0032] Example 3 like Figure 1 , Figure 6 and Figure 7As shown, the correction mechanism includes a column 17 fixedly mounted on a top plate 34. A groove 32 is provided on the column 17, and a first threaded rod 18 is rotatably mounted within the groove 32. A support block 19 is slidably mounted within the groove 32 and threadedly connected to the first threaded rod 18. A fixing plate 20 is fixedly mounted at one end of the support block 19, and a positioning block 22 is slidably mounted on the bottom of the fixing plate 20. The positioning block 22 has anti-slip textures. A first gear 6 is rotatably mounted on the top plate 34 and fixedly connected to the first threaded rod 18. A second gear 7 is rotatably mounted on the top plate 34, meshing with the first gear 6. A positioning plate 9 is slidably mounted on one side of the mounting column 2. A second threaded rod 8 is rotatably mounted on the top plate 34, threadedly connected to the positioning plate 9. Guide rods 10 are symmetrically hinged on both sides of the bottom of the positioning plate 9. Guide blocks 12 are symmetrically slidably mounted on the placement platform 11, with one end of the guide rod 10 hinged to the guide block 12. A side plate 14 is fixedly mounted on one side of the guide block 12, and a straightening plate 16 is slidably mounted on one side of the side plate 14. When it is necessary to adjust the rubber 37... During clamping, rubber 37 is placed on connecting cavity 29, with both ends of rubber 37 placed on placement platform 11. The first gear 6 is rotated, which drives the second gear 7 to rotate. The first gear 6 drives the first threaded rod 18 to rotate, and the second gear 7 drives the second threaded rod 8 to rotate. The second threaded rod 8 moves the positioning plate 9 downwards. The positioning plate 9 presses against the guide rods 10 on both sides of the bottom. The guide rods 10, under the pressure of the positioning plate 9, press against the guide blocks 12, causing the guide blocks 12 to move closer together. The guide blocks 12 then move the side plates 14 on one side closer together. The straightening plate 16 on the side plate 14 simultaneously presses against both ends of rubber 37, positioning it in the middle of placement platform 11. Simultaneously, the first threaded rod 18 moves the fixing plate 20 on one side of support block 19 downwards. The fixing plate 20 fixes the positioning block 22 at the bottom, securing both ends of rubber 37. This allows for automatic straightening during clamping, avoiding operational errors and pre-stretch deformation caused by manual straightening, improving detection efficiency, and preventing rubber 37 from shifting position and generating additional stress during stretching, thus improving detection accuracy.

[0033] like Figure 6 , Figure 7 and Figure 8As shown, a fixing bracket 31 is fixedly installed on the top plate 34, and a motor 5 is fixedly installed at one end of the fixing bracket 31. The output shaft of the motor 5 is fixedly connected to the first gear 6. A first spring 21 is fixedly installed at the bottom of the fixing plate 20, and one end of the first spring 21 is fixedly connected to the positioning block 22. Multiple second springs 15 are fixedly installed on one side of the side plate 14, and one end of the second spring 15 is fixedly connected to the straightening plate 16. A connecting groove 33 is opened on one side of the mounting column 2, and the positioning plate 9 is slidably connected to the connecting groove 33. A positioning groove 23 is opened on one side of the bottom plate 1. The connecting block 25 is located in the positioning groove 23. One of the connecting blocks 25 is slidably connected to the positioning groove 23. The placement table 11 is provided with a guide groove 13. The guide block 12 is slidably connected to the guide groove 13. The first spring 21 can buffer the pressure of the positioning block 22 on the rubber 37 to avoid excessive pressure causing the rubber 37 to be squeezed and deformed. The second spring 15 can buffer the squeezing force of the straightening plate 16 on the rubber 37, which not only ensures the straightening effect but also prevents the edge of the rubber 37 from being crushed. At the same time, it can adapt to rubber 37 samples of different widths, improving the versatility of the device.

[0034] Working principle: When it is necessary to clamp the rubber 37, place the rubber 37 on the connecting cavity 29, with both ends of the rubber 37 placed on the placement platform 11. Rotate the first gear 6, which drives the second gear 7 to rotate. The first gear 6 drives the first threaded rod 18 to rotate, and the second gear 7 drives the second threaded rod 8 to rotate. The second threaded rod 8 drives the positioning plate 9 to move downward. The positioning plate 9 presses against the guide rods 10 on both sides of the bottom. The guide rods 10 are pressed by the positioning plate 9, which in turn presses against the guide blocks 12, causing the guide blocks 12 to move closer together. The guide blocks 12 then drive the side plates 14 on one side to move closer together. The straightening plates 16 on the side plates 14 simultaneously press against both ends of the rubber 37, positioning it in the placement platform 11. At the center of the platform 11, the first threaded rod 18 simultaneously moves the fixing plate 20 on one side of the support block 19 downwards. The fixing plate 20 fixes the bottom positioning block 22 to both ends of the rubber 37, allowing it to automatically complete the correction during clamping without manual intervention, thus improving testing efficiency and preventing the rubber 37 from shifting position and generating additional stress during stretching, thereby improving testing accuracy. When the rubber 37 is clamped and needs to be subjected to tensile testing, the telescopic rod 3 is activated. The piston rod of the telescopic rod 3 moves the slider 4, activating the air pump 36. The air pump 36 draws air into the connecting pipe 35 and finally discharges it into the connecting cavity 29, exiting through the air outlet 30 on the connecting cavity 29. The discharged gas creates thrust at the bottom of the rubber. The rubber 37 is lifted upwards, and its weight is counteracted by pushing force. At this time, the rubber 37 is in a suspended state. When the weight of the rubber 37 is large, the rubber 37 will sag in the middle, eliminating the stress caused by the weight of the rubber 37 and improving the accuracy of the test. At the same time, as the slider 4 moves to one side, the slider 4 drives the connecting plate 24 on one side to move together. The connecting rod 26 on the connecting plate 24 generates tension. Since the two connecting rods 26 are rotated and connected to each other, and the short rod 38 at the connection point is perpendicular to the mounting block 28, when the connecting plate 24 moves, the short rod 38 is always in the middle of the two connecting rods 26. The short rod 38 drives the connecting cavity 29 on one side to move synchronously, so that the rubber 37 is stretched during the process. The connecting cavity 29 can always be located in the middle of the rubber 37, so that the air pressure on the rubber 37 remains uniform, improving the accuracy of the test. The suspended rubber does not come into contact with any object during the stretching process, further eliminating the influence of friction force of the connecting cavity 29 on the rubber 37. The output power of the air pump 36 can be adjusted according to the suspension state of the rubber 37. When the fluctuation is too large, the output power of the air pump 36 is reduced, and when the rubber is too heavy, the output power of the air pump 36 is increased. This invention effectively solves the technical problems existing in the current rubber tensile testing, such as self-weight stress, friction interference, positional deviation, and cumbersome operation. While improving the accuracy and stability of the test, it simplifies the operation process and improves the versatility and reliability of the equipment.

[0035] The above specific embodiments are merely several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A testing device for manufacturing rubber products, comprising a base plate (1), characterized in that, It also includes a pair of sliders (4), one of which is slidably connected to the base plate (1), and the other is fixedly connected to the base plate (1). A mounting post (2) is fixedly installed on the slider (4), and a top plate (34) is fixedly installed on the mounting post (2). A placement platform (11) is fixedly installed on the slider (4), and a rubber (37) is placed on the placement platform (11). A telescopic rod (3) is fixedly installed on the base plate (1), and one end of the telescopic rod (3) is fixedly connected to the slider (4). A tension sensor is provided between the telescopic rod (3) and the slider (4). A correction mechanism is provided on the slider (4) to fix the rubber (37) and correct its position. An auxiliary device is provided between the placement platforms (11) to support the middle of the rubber (37) without friction.

2. The testing device for manufacturing rubber products according to claim 1, characterized in that, The auxiliary device includes a pair of connecting blocks (25) mounted on a base plate (1). The connecting blocks (25) are fixedly connected to two sliders (4) respectively. A connecting plate (24) is fixedly installed on one side of the connecting block (25). A connecting rod (26) is hinged to the top of the connecting plate (24). One end of the two connecting rods (26) is rotatably connected to each other. An mounting block (28) is slidably mounted on the base plate (1). A support rod (27) is fixedly mounted on the mounting block (28). The support rod (27) is perpendicular to the mounting block (28). A short rod (38) is slidably installed on the support rod (27). One end of the short rod (38) is rotatably connected to the bottom of the connecting rod (26). A connecting cavity (29) is fixedly installed on one side of the mounting block (28). The connecting cavity (29) is a hollow cavity. Multiple air outlet slots (30) are arranged at equal intervals on the connecting cavity (29). An air pump (36) is fixedly installed on one side of the base plate (1). A connecting pipe (35) is fixedly installed on one end of the air pump (36). One end of the connecting pipe (35) is connected to the connecting cavity (29).

3. The testing device for manufacturing rubber products according to claim 1, characterized in that, The correction mechanism includes a column (17) fixedly mounted on a top plate (34), a groove (32) provided on the column (17), a first threaded rod (18) rotatably mounted in the groove (32), a support block (19) slidably mounted in the groove (32), the support block (19) being threadedly connected to the first threaded rod (18), a fixing plate (20) fixedly mounted on one end of the support block (19), a positioning block (22) slidably mounted on the bottom of the fixing plate (20), the positioning block (22) being provided with anti-slip texture, a first gear (6) rotatably mounted on the top plate (34), the first gear (6) being fixedly connected to the first threaded rod (18), and so on. A second gear (7) is rotatably mounted on the top plate (34), and the first gear (6) meshes with the second gear (7). A positioning plate (9) is slidably mounted on one side of the mounting column (2). A second threaded rod (8) is rotatably mounted on the top plate (34), and the second threaded rod (8) is threadedly connected to the positioning plate (9). Guide rods (10) are symmetrically hinged on both sides of the bottom of the positioning plate (9). Guide blocks (12) are symmetrically slidably mounted on the placement platform (11). One end of the guide rod (10) is hinged to the guide block (12). A side plate (14) is fixedly mounted on one side of the guide block (12), and a straightening plate (16) is slidably mounted on one side of the side plate (14).

4. The testing device for manufacturing rubber products according to claim 3, characterized in that, A fixing frame (31) is fixedly installed on the top plate (34), and a motor (5) is fixedly installed at one end of the fixing frame (31). The output shaft of the motor (5) is fixedly connected to the first gear (6).

5. The testing device for manufacturing rubber products according to claim 3, characterized in that, A first spring (21) is fixedly installed at the bottom of the fixing plate (20), and one end of the first spring (21) is fixedly connected to the positioning block (22).

6. The testing device for manufacturing rubber products according to claim 3, characterized in that, A plurality of second springs (15) are fixedly installed on one side of the side plate (14), and one end of the second spring (15) is fixedly connected to the correction plate (16).

7. The testing device for manufacturing rubber products according to claim 3, characterized in that, A connecting groove (33) is provided on one side of the mounting column (2), and the positioning plate (9) is slidably connected to the connecting groove (33).

8. The testing device for manufacturing rubber products according to claim 2, characterized in that, A positioning groove (23) is provided on one side of the base plate (1), and the connecting block (25) is located in the positioning groove (23), with one of the connecting blocks (25) slidingly connected to the positioning groove (23).

9. A testing device for manufacturing rubber products according to claim 3, characterized in that, The placement platform (11) is provided with a guide groove (13), and the guide block (12) is slidably connected to the guide groove (13).

10. The testing device for manufacturing rubber products and its method of use according to claim 1, characterized in that, The testing device for manufacturing rubber products according to claim 1 includes the following steps; S1; Place both ends of the rubber (37) to be tested on the placement platform (11) respectively, and place the middle part of the rubber (37) on the connecting cavity (29); S2; Start the motor (5), the motor (5) drives the first gear (6) and the second gear (7) to rotate, which in turn drives the first threaded rod (18) and the second threaded rod (8) to rotate. The straightening plate (16) on one side of the side plate (14) moves closer to each other, straightening the position of the rubber (37) on the placement table (11) to make it centered. At the same time, the positioning block (22) at the bottom of the first spring (21) squeezes the rubber (37) to fix it, and the clamping is completed. S3; Start the telescopic rod (3) to move the slider (4) and pull the rubber (37) to one side. The slider (4) moves the bottom connecting cavity (29) so that it is located in the middle of the rubber (37). Start the air pump (36) to draw air into the connecting cavity (29). The gas in the connecting cavity (29) is discharged upward to form an air film to support the bottom of the rubber (37). S4; The tension sensor between the telescopic rod (3) and the slider (4) detects and records the tension during the stretching process of the rubber (37), thus completing the stretching test of the rubber (37).

Images