Flexibility detection device for flame-retardant rubber foamed sponge

Abstract

The utility model discloses a flexibility detection device for flame-retardant rubber foamed sponge, which belongs to the technical field of flexibility detection devices and comprises an operation table, a fixed clamp, a movable clamp and an electric telescopic rod, reference scale marks are arranged on the operation table, the electric telescopic rod is arranged on the lower end face of the operation table and used for driving the movable clamp to move, and the movable clamp comprises a movable rotating clamp. The bottom end of the movable rotating clamp is fixedly connected with a sliding block, and the bottom end of the sliding block is fixedly connected with a connecting block provided with an S-shaped tension sensor. According to the technical scheme, the electric telescopic rod drives the movable clamp to move towards the direction, so that the sponge is pressed and bent, the bending amplitude, namely the deformation degree, of the sponge can be read with the reference scale line as the reference, and the current pulling force applied by the electric telescopic rod is read through the S-shaped pulling force sensor; the pulling force is in direct proportion to the external pushing force applied by the sponge due to bending, and the flexibility of the sponge to be detected can be quantitatively evaluated according to the deformation degree and the pushing force.

Description

Technical Field

[0001] This utility model relates to the technical field of flexibility testing devices, specifically a flexibility testing device for flame-retardant rubber foam sponge. Background Technology

[0002] Rubber foam is a porous material with pores throughout its structure. It has low density, excellent elasticity and flexibility, and high shock absorption, sound insulation, and heat insulation properties. Its products come in a wide variety of types and shapes and are widely used in sealing, shock absorption, sound absorption, heat insulation, clothing, footwear, home appliances, printing and dyeing, fitness equipment, and ion exchange, among many other applications. The flexibility of rubber foam is a crucial indicator, therefore, flexibility testing of finished products is necessary to determine whether they meet standards.

[0003] The utility model patent with announcement number CN211697287U discloses a flexibility testing device for flame-retardant sponge processing. It places both ends of the fire-retardant sponge body on two lifting sliders, and simultaneously controls the extension and retraction of the clamping air rod by a clamping air cylinder to clamp the clamping plate. Then, the first air cylinder causes the first air rod to extend and retract, moving the pressure rod above the fire-retardant sponge body. The second air cylinder causes the second air rod to extend and retract, so that the pressure rod on the second air rod contacts the fire-retardant sponge body, thereby testing the flexibility of the fire-retardant sponge body.

[0004] The aforementioned device uses a pressure rod to compress the sponge body, causing it to deform. The sponge's flexibility is then judged by observing the deformation. However, this method can only roughly and qualitatively detect the sponge's flexibility, and it usually requires a control sample for comparison to intuitively judge the quality of flexibility. It is cumbersome to operate and cannot quantitatively determine the sponge's flexibility level, causing inconvenience to the testing work. It also cannot distinguish between sponges with similar flexibility. Therefore, to address the above problems, a flexibility testing device for flame-retardant rubber foam sponge is proposed. Utility Model Content

[0005] The technical problem this invention aims to solve is to provide a flexibility testing device for flame-retardant rubber foam sponges. This device uses a fixed clamp and a movable clamp to hold and fix both ends of the sponge to be tested. During testing, an electric telescopic rod drives the movable clamp to move, causing the sponge to bend under pressure. During this process, the bending amplitude of the sponge can be read using a reference scale line, and the magnitude of the tension applied by the electric telescopic rod is read using an S-shaped tension sensor. The magnitude of this tension is directly proportional to the magnitude of the outward thrust applied by the sponge due to bending. By measuring the degree of deformation and the magnitude of the thrust, the flexibility of the sponge to be tested can be quantitatively evaluated. That is, when the degree of deformation is consistent, the greater the outward thrust, the lower the flexibility; when the outward thrust is consistent, the smaller the degree of deformation, the lower the flexibility, and vice versa. This solves the technical problem in the prior art where flexibility testing requires a control sample for comparison to intuitively judge the quality of flexibility, making it impossible to quantitatively determine the flexibility level of the sponge and distinguish between sponges with similar flexibility, which brings many inconveniences to the testing work.

[0006] The technical solution adopted by the embodiments of this application to solve its technical problem is:

[0007] A flexibility testing device for flame-retardant rubber foam sponge includes an operating table with reference scale lines and a sliding groove, a fixed clamp and a movable clamp respectively disposed on the left and right sides of the operating table, and an electric telescopic rod disposed on the lower end face of the operating table to drive the movable clamp to move. The movable clamp includes a movable rotating clamp, the bottom end of which is fixedly connected to a sliding block slidably disposed in the sliding groove, and the bottom end of the sliding block is fixedly connected to a connecting block. An S-shaped tension sensor is fixedly connected to the connecting block, and the end of the electric telescopic rod is fixedly connected to the other end of the S-shaped tension sensor.

[0008] With the above-described structure, the two ends of the sponge to be tested are clamped and fixed using a fixed clamp and a movable clamp. During testing, the electric telescopic rod drives the movable clamp to move, causing the sponge to bend under pressure. During this process, the bending amplitude of the sponge, i.e., the degree of deformation, can be read using a reference scale line. The magnitude of the tension applied by the electric telescopic rod is read using an S-shaped tension sensor. This tension is proportional to the magnitude of the outward thrust exerted by the sponge due to bending. By measuring the degree of deformation and the magnitude of the thrust, the flexibility of the sponge to be tested can be quantitatively evaluated. That is, when the degree of deformation is consistent, the greater the outward thrust, the lower the flexibility; when the outward thrust is consistent, the smaller the degree of deformation, the lower the flexibility, and vice versa.

[0009] In one possible implementation, a constraint sliding member is fixedly connected to the top of the movable rotating clamp, and a support plate is fixedly mounted on the operating table on one side of the movable rotating clamp. A constraint slide rail is fixedly connected to the top of the support plate, and the constraint sliding member is engaged in the constraint slide rail and slides in contact with it.

[0010] Through the above structural form, the combined action of the constraint sliding member and the constraint slide rail can constrain and support the upper end of the moving rotating clamp, and prevent its top end from shifting without hindering its movement.

[0011] In one possible implementation, the cross-section of the sliding block is a rounded rectangle, and the width of the rounded rectangle is the same as the width of the groove.

[0012] The above-described structure allows the sliding block to slide bidirectionally within the groove without rotating, thus ensuring that the connecting block fixedly attached to its bottom can only slide along the central axis of the electric telescopic rod, making the measurement values ​​of the S-shaped tension sensor more accurate.

[0013] In one possible implementation, the fixing clamp includes a fixed rotating clamp and an L-shaped fixing plate, wherein the L-shaped fixing plate is fixedly connected to the operating table, and the upper and lower ends of the fixed rotating clamp are fixedly connected to the L-shaped fixing plate and the operating table, respectively.

[0014] The above-described structure enables the fixed installation of the rotating clamp.

[0015] In one possible implementation, the fixed rotating clamp includes a central rotating shaft with mounting end plates rotatably connected to both ends of the central rotating shaft. A C-shaped plate is fixedly connected to the side of the central rotating shaft, and a movable clamping plate is movably disposed in the C-shaped plate. A fastening bolt is threaded onto the C-shaped plate, and the shaft end of the fastening bolt is rotatably connected to the movable clamping plate.

[0016] With the above-described structure, the combination of C-shaped plates and movable clamps can be used to fix sponges of different thicknesses to be tested. The distance between the movable clamps and the C-shaped plates can be adjusted by tightening the fastening bolts, thereby clamping and constraining the ends of the sponges and facilitating the testing process.

[0017] In one possible implementation, guide rods are slidably provided on the upper and lower sides of the C-shaped plate, and the inner ends of the guide rods are fixedly connected to the movable clamping plate.

[0018] With the above-described structure, the guide rod can act as a constraint, preventing the movable clamp from rotating during its forward and backward movement. This avoids the movable clamp having a large rotation angle, which would affect the fixing effect on the end of the sponge.

[0019] In one possible implementation, the structure and dimensions of the movable rotating clamp are completely identical to those of the fixed rotating clamp.

[0020] The above-described structure allows the movable rotating clamp to perform the same function as the fixed rotating clamp.

[0021] In one possible implementation, the reference scale line is composed of several parallel and equidistant lines, and each line is marked with a numerical value at its end.

[0022] With the above-mentioned structure, when the sponge under test is bent and deformed under pressure, the current deformation range can be determined by comparing it with the reference scale line, which makes it easy for users to quantitatively judge the relationship between the flexibility of individual test samples.

[0023] In summary, this utility model has the following beneficial technical effects:

[0024] The sponge to be tested is clamped and fixed at both ends using a fixed clamp and a movable clamp. During testing, an electric telescopic rod drives the movable clamp to move, causing the sponge to bend under pressure. During this process, the bending amplitude, i.e. the degree of deformation, of the sponge can be read with reference to the scale line. An S-shaped tension sensor reads the magnitude of the tension applied by the electric telescopic rod. The magnitude of this tension is proportional to the magnitude of the outward thrust exerted by the sponge due to bending. The flexibility of the sponge to be tested can be quantitatively evaluated by the degree of deformation and the magnitude of the thrust. The overall structure is simple and easy to operate. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the bottom structure of the device of this utility model;

[0028] Figure 3 This is a schematic diagram of the movable clamp structure of this utility model;

[0029] Figure 4 This is a schematic diagram of the fixing fixture structure of this utility model.

[0030] In the diagram: 1. Operating table; 11. Slide groove; 2. Fixed clamp; 21. Fixed rotating clamp; 211. Central shaft; 212. Mounting end piece; 213. C-shaped plate; 214. Guide rod; 215. Movable clamping plate; 216. Fastening bolt; 22. L-shaped fixing plate; 3. Moving clamp; 31. Moving rotating clamp; 32. Sliding block; 33. Connecting block; 34. S-shaped tension sensor; 35. Constraint sliding component; 36. Support plate; 37. Constraint slide rail; 4. Electric telescopic rod; 5. Reference scale line. Detailed Implementation

[0031] The technical solution in this application embodiment is to solve the problems mentioned in the background art, and the overall idea is as follows:

[0032] like Figure 1 - Figure 3 As shown in the figure, this embodiment provides a flexibility testing device for flame-retardant rubber foam sponge, including an operating table 1 with reference scale lines 5 drawn on it and a sliding groove 11. A fixed clamp 2 and a movable clamp 3 are respectively set on the left and right sides of the operating table 1. An electric telescopic rod 4 is set on the lower end face of the operating table 1 to drive the movable clamp 3 to move. The movable clamp 3 includes a movable rotating clamp 31. The bottom end of the movable rotating clamp 31 is fixedly connected to a sliding block 32 that is slidably set in the sliding groove 11. The bottom end of the sliding block 32 is fixedly connected to a connecting block 33. An S-shaped tension sensor 34 is fixedly connected to the connecting block 33. At the same time, the rod end of the electric telescopic rod 4 is fixedly connected to the other end of the S-shaped tension sensor 34. With the above structure, the fixed clamp 2 and the movable clamp 3 clamp and fix both ends of the sponge to be tested, which facilitates the testing work.

[0033] The working principle of the test is as follows: During the test, the electric telescopic rod 4 drives the moving clamp 3 to move, causing the sponge to bend under pressure. During this process, the bending range of the sponge, i.e. the degree of deformation, can be read with reference scale line 5 as a reference. The S-type tension sensor 34 reads the current tension applied by the electric telescopic rod 4. The magnitude of the tension is proportional to the magnitude of the outward thrust applied by the sponge due to bending. The flexibility of the sponge to be tested can be quantitatively evaluated by the degree of deformation and the magnitude of the thrust. That is, when the degree of deformation is consistent, the greater the outward thrust, the lower the flexibility; when the outward thrust is consistent, the smaller the degree of deformation, the lower the flexibility, and vice versa.

[0034] like Figure 3 As shown, a constraint sliding member 35 is fixedly connected to the top of the movable rotating clamp 31, and a support plate 36 is fixedly installed on the operating table 1 on one side of the movable rotating clamp 31. A constraint slide rail 37 is fixedly connected to the top of the support plate 36. The constraint sliding member 35 is engaged in the constraint slide rail 37 and slides in contact with it. Through the above structure, the combined action of the constraint sliding member 35 and the constraint slide rail 37 can constrain and support the upper end of the movable rotating clamp 31, and prevent its top from shifting without hindering its movement.

[0035] The sliding block 32 has a rounded rectangle cross-section, and the width of the rounded rectangle is the same as the width of the groove 11. This structure allows the sliding block 32 to slide bidirectionally in the groove 11 without rotating, thereby ensuring that the connecting block 33 fixedly connected to its bottom can only slide on the central axis of the electric telescopic rod 4, making the measurement value of the S-shaped tension sensor 34 more accurate.

[0036] like Figure 4As shown, the fixing clamp 2 includes a fixing rotating clamp 21 and an L-shaped fixing plate 22. The L-shaped fixing plate 22 is fixedly connected to the operating table 1. The upper and lower ends of the fixing rotating clamp 21 are fixedly connected to the L-shaped fixing plate 22 and the operating table 1, respectively. Through the above structure, the fixing rotating clamp 21 can be fixedly installed.

[0037] The fixed rotating clamp 21 includes a central rotating shaft 211, with mounting end pieces 212 rotatably connected to both ends of the central rotating shaft 211. A C-shaped plate 213 is fixedly connected to the side of the central rotating shaft 211, and a movable clamping plate 215 is movably disposed in the C-shaped plate 213. A fastening bolt 216 is threaded onto the C-shaped plate 213, and the shaft end of the fastening bolt 216 is rotatably connected to the movable clamping plate 215. Through the above structure, the combination of the C-shaped plate 213 and the movable clamping plate 215 can be used to fix the sponge to be tested with different thicknesses. The distance between the movable clamping plate 215 and the C-shaped plate 213 can be adjusted by tightening the fastening bolt 216, thereby clamping and constraining the end of the sponge, which facilitates the testing work.

[0038] In addition, guide rods 214 are slidably provided on the upper and lower sides of the C-shaped plate 213, and the inner end of the guide rods 214 is fixedly connected to the movable clamping plate 215. Through the above structure, the guide rods 214 can play a restraining role, so that the movable clamping plate 215 cannot rotate during the back and forth movement, thus avoiding the large rotation angle of the movable clamping plate 215 from affecting the fixing effect on the end of the sponge.

[0039] Furthermore, the structure and dimensions of the movable rotating clamp 31 are completely identical to those of the fixed rotating clamp 21. This technical solution enables the movable rotating clamp 31 to perform the same function as the fixed rotating clamp 21.

[0040] like Figure 1 As shown, the reference scale line 5 is composed of several parallel and equidistant lines, and each line is marked with a value at its end. Through the above structure, when the sponge under test is bent and deformed under pressure, the current deformation range can be obtained by comparing it with the reference scale line 5, which makes it easy for users to quantitatively judge the relationship between the flexibility of each test sample.

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

[0042] The fixed clamp 2 and the movable clamp 3 clamp and fix the two ends of the sponge to be tested, which facilitates the testing work. During the test, the electric telescopic rod 4 drives the movable clamp 3 to move, causing the sponge to bend under pressure. During this process, the bending range of the sponge, i.e. the degree of deformation, can be read with reference to the scale line 5. The S-shaped tension sensor 34 reads the current tension applied by the electric telescopic rod 4. The magnitude of the tension is proportional to the magnitude of the external thrust applied by the sponge due to bending. The flexibility of the sponge to be tested can be quantitatively evaluated by the degree of deformation and the magnitude of the thrust. The overall structure is simple and easy to operate.

[0043] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A flexibility testing device for flame-retardant rubber foam sponge, characterized in that, include: The operating table (1) has reference scale lines (5) drawn on it and has a sliding groove (11); The fixed clamp (2) and the movable clamp (3) are respectively set on the left and right sides of the operating table (1); An electric telescopic rod (4) is located on the lower end face of the operating table (1) to drive the moving clamp (3) to move. The movable clamp (3) includes a movable rotating clamp (31), the bottom end of which is fixedly connected to a sliding block (32) that is slidably disposed in a sliding groove (11), and the bottom end of the sliding block (32) is fixedly connected to a connecting block (33), an S-shaped tension sensor (34) is fixedly connected to the connecting block (33), and the end of the electric telescopic rod (4) is fixedly connected to the other end of the S-shaped tension sensor (34).

2. The flexibility testing device for flame-retardant rubber foam sponge according to claim 1, characterized in that: The top of the movable rotating clamp (31) is fixedly connected to a constraint sliding member (35), and a support plate (36) is fixedly installed on the operating table (1) on one side of the movable rotating clamp (31). A constraint slide rail (37) is fixedly connected to the top of the support plate (36), and the constraint sliding member (35) is engaged in the constraint slide rail (37) and slides in contact with it.

3. The flexibility testing device for flame-retardant rubber foam sponge according to claim 1, characterized in that: The cross-section of the sliding block (32) is a rounded rectangle, and the width of the rounded rectangle is the same as the width of the groove (11).

4. The flexibility testing device for flame-retardant rubber foam sponge according to claim 1, characterized in that: The fixing clamp (2) includes a fixing rotating clamp (21) and an L-shaped fixing plate (22), wherein the L-shaped fixing plate (22) is fixedly connected to the operating table (1), and the upper and lower ends of the fixing rotating clamp (21) are fixedly connected to the L-shaped fixing plate (22) and the operating table (1) respectively.

5. The flexibility testing device for flame-retardant rubber foam sponge according to claim 4, characterized in that: The fixed rotating clamp (21) includes a central rotating shaft (211), with mounting end pieces (212) rotatably connected to both ends of the central rotating shaft (211). A C-shaped plate (213) is fixedly connected to the side of the central rotating shaft (211), and a movable clamping plate (215) is movably arranged in the C-shaped plate (213). A fastening bolt (216) is threaded onto the C-shaped plate (213), and the shaft end of the fastening bolt (216) is rotatably connected to the movable clamping plate (215).

6. The flexibility testing device for flame-retardant rubber foam sponge according to claim 5, characterized in that: The C-shaped plate (213) has guide rods (214) slidably arranged on its upper and lower sides, and the inner end of the guide rods (214) is fixedly connected to the movable clamping plate (215).

7. The flexibility testing device for flame-retardant rubber foam sponge according to claim 6, characterized in that: The structure and dimensions of the movable rotating clamp (31) are completely consistent with those of the fixed rotating clamp (21).

8. The flexibility testing device for flame-retardant rubber foam sponge according to claim 1, characterized in that: The reference scale line (5) is composed of several parallel lines that are equidistant from each other, and each line is marked with a numerical value at its end.

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