PTFE (Polytetrafluoroethylene) membrane strength testing equipment

Abstract

The utility model relates to the technical field of PTFE (Polytetrafluoroethylene) film strength testing, and discloses PTFE film strength testing equipment which comprises a base, the sliding table assembly comprises upper pressing blocks and lower fixing blocks, one lower fixing block is fixedly connected with the base, the other lower fixing block is slidably connected with the base, the top of each lower fixing block is provided with one upper pressing block, the upper pressing blocks are locked with the lower fixing blocks through bolts, the bottoms of the upper pressing blocks are fixedly connected with convex ribs, and the convex ribs are fixedly connected with the sliding table assembly. An anti-disengaging groove is formed in the top face of each lower fixing block, the two ends of a thin film are placed on the tops of the two lower fixing blocks, the upper pressing blocks are placed on the lower fixing blocks and locked with the corresponding lower fixing blocks through bolts, the thin film is extruded into the anti-disengaging grooves through the convex ribs, and therefore the thin film forms a section of bend which is the same as the anti-disengaging grooves in shape. The end of the thin film is limited, the fixing effect on the end position of the thin film is better, and the probability that the thin film slips off between the upper pressing block and the lower fixing block when the thin film is stretched is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to PTFE film strength test technical field especially relates to a PTFE film strength test equipment. BACKGROUND

[0002] As the production raw material of the film filter material, PTFE (polytetrafluoroethylene) film needs to be tested for performance to ensure the quality of the subsequent products.

[0003] The prior art discloses a kind of PTFE film tensile strength and ductility test equipment (publication number: CN215179237U), including test equipment rack, driving device, clamping fixed mechanism and drying mechanism, wherein, the side of test equipment rack is provided with driving device, the output shaft of driving device is connected with screw rod, and clamping fixed mechanism is threadedly connected on the outer surface of screw rod.

[0004] In prior art, two plates are clamped to fix the two ends of film, and the plane between the plates is relied on friction force for limiting the film, so that the limiting strength is certain, in order to prevent film from slipping during stretching, enough pressure needs to be applied to the two stacked plates, and the clamping force is too large, which may also cause the thickness of film to decrease and affect the test value during clamping process.

[0005] Therefore, we propose a kind of PTFE film strength test equipment. UTILITY MODEL CONTENTS

[0006] The utility model mainly solves the above-mentioned technical problem that the film end clamping fixing force is not enough and the film thickness is easily changed, and provides a kind of PTFE film strength test equipment.

[0007] In order to achieve the above purpose, the utility model adopts the following technical scheme, a kind of PTFE film strength test equipment, including:

[0008] Base, plate-shaped structure for supporting and installing;

[0009] Slide table assembly is arranged at the top of base and has two groups, two groups of slide table assemblies are symmetrically arranged and respectively clamp the two ends of film, the slide table assembly includes upper pressing block and lower fixed block, one of lower fixed blocks is fixedly connected with base, and the other lower fixed block is slidably connected with base, the top of each lower fixed block is provided with a block of upper pressing block, the upper pressing block is locked with lower fixed block by bolt, the bottom of upper pressing block is fixedly connected with convex rib, the top surface of lower fixed block is provided with anti-drop groove, the convex rib is inserted into anti-drop groove and the film is pressed in anti-drop groove;

[0010] Pushing structure is arranged at the top of base for pushing slidable upper pressing block to slide.

[0011] As a preferred mode of the utility model, the upper pressing block and the lower fixing block are both rectangular block structures, the anti-disengagement groove forms a convex notch, the convex rib is matched with the anti-disengagement groove, and the convex rib is integrally formed with the upper pressing block.

[0012] As a preferred mode of the utility model, the top surface of the lower fixing block is provided with a threaded hole, the top of the upper pressing block is provided with a mounting hole, and the upper pressing block is locked by fastening the threaded hole with the mounting hole through a bolt.

[0013] As a preferred mode of the utility model, the pushing structure comprises a pushing cylinder and a pressure sensor, the pressure sensor is fixedly installed at the top of the base, the pushing cylinder is slidably connected with the base and located at one side of the pressure sensor, and the output shaft of the pressure sensor abuts against the lower fixing block.

[0014] As a preferred mode of the utility model, the bottom of the lower fixing block is fixedly provided with a limiting protrusion, and the lower fixing block is slidably connected with the base through the limiting protrusion.

[0015] As a preferred mode of the utility model, the top of the base is provided with a slide way matched with the limiting protrusion, the limiting protrusion is matched with the slide way, and the limiting protrusion is slidably arranged in the slide way.

[0016] As a preferred mode of the utility model, the top center of the base is provided with a pushing block, and the bottom of the base is slidably connected with a vertical electric cylinder, the pushing block is fixedly connected with the output shaft of the vertical electric cylinder, and the vertical electric cylinder can push the pushing block to move upwards to extrude the film.

[0017] The utility model provides a kind of PTFE film strength test equipment.There is following beneficial effect:

[0018] 1.The PTFE film strength test equipment, by removing two upper pressing blocks, placing the two ends of the film on the top of two lower fixing blocks, placing the upper pressing blocks on the lower fixing blocks and locking them with corresponding lower fixing blocks through bolts, extruding the film into the anti-disengagement groove through the convex rib, forming a bending with the same shape as the anti-disengagement groove, limiting the end of the film, fixing the end of the film better, reducing the probability of the film slipping between the upper pressing blocks and the lower fixing blocks when stretching the film, ensuring the stability of the film fixation, making the end fixation of the film not completely dependent on clamping force, reducing the probability of excessive extrusion affecting the measurement accuracy due to changes in film thickness.

[0019] 2. The PTFE film strength testing equipment, the lower fixed block is slid by the push cylinder, the limit block is slid in the sliding groove, the two lower fixed blocks are away from each other, the tensile strength of the film is realized, the pressure sensor is arranged, the specific thrust value of the push cylinder to the lower fixed block is measured by the pressure of the push cylinder to the pressure sensor, the tensile strength of the film is measured, the structure is simple, and the measurement precision is higher.

[0020] 3. The PTFE film strength testing equipment, the size of the upward thrust of the extrusion block is measured by the pressure sensor, the film puncture resistance is measured by the extrusion block moving up and extruding the film, and the test of the tensile strength is combined, and the film test is more comprehensive. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is one of the overall perspective views of the utility model;

[0022] Figure 2 It is a lower fixed block perspective view of the utility model;

[0023] Figure 3 It is a upper pressure block perspective view of the utility model;

[0024] Figure 4 It is the second overall perspective view of the utility model;

[0025] Figure 5 It is a lower fixed block installation push structure perspective view of the utility model.

[0026] Legend: 10, base; 11, push cylinder; 12, pressure sensor; 13, extrusion block; 14, vertical cylinder; 20, upper pressure block; 21, lower fixed block; 22, limit block; 30, anti-off groove; 31, convex rib. DETAILED DESCRIPTION

[0027] A PTFE film strength testing equipment, as shown in Figure 1 , comprising:

[0028] Base 10, a plate-shaped structure for supporting and installing;

[0029] Figure 1 , Figure 2 and Figure 3As shown, the slide assembly is arranged on the top of the base 10 and has two groups, two groups of slide assemblies are symmetrically arranged and clamp the two ends of the film respectively, the slide assembly includes an upper pressing block 20 and a lower fixed block 21, one of the lower fixed blocks 21 is fixedly connected with the base 10, and the other lower fixed block 21 is slidably connected with the base 10, the top of each lower fixed block 21 is provided with an upper pressing block 20, the upper pressing block 20 is locked with the lower fixed block 21 through a bolt, the bottom of the upper pressing block 20 is fixedly connected with a protruding rib 31, the top surface of the lower fixed block 21 is provided with an anti-disengagement groove 30, the protruding rib 31 is inserted into the anti-disengagement groove 30 and the film is pressed in the anti-disengagement groove 30; the upper pressing block 20 and the lower fixed block 21 are both rectangular block structures, the anti-disengagement groove 30 forms a convex notch, the protruding rib 31 is matched with the anti-disengagement groove 30, the protruding rib 31 is integrally formed with the upper pressing block 20, the top surface of the lower fixed block 21 is provided with a threaded hole, and the top of the upper pressing block 20 is provided with a mounting hole, the bolt passes through the mounting hole and the threaded hole to fasten and lock the upper pressing block 20;

[0030] In the scheme, only the two ends of the film are clamped and fixed, and the film can be stretched and tested by moving away from each other through the two groups of slide assemblies. In order to achieve the above purpose, two upper pressing blocks 20 are removed, the two ends of the film are placed on the top of the two lower fixed blocks 21, the upper pressing block 20 is placed on the lower fixed block 21 and locked with the corresponding lower fixed block 21 through a bolt, the film is extruded into the anti-disengagement groove 30 through the protruding rib 31, so that the film forms a bending section with the same shape as the anti-disengagement groove 30, and the end of the film is limited, the fixing effect of the film end position is better, the probability of the film slipping out of the upper pressing block 20 and the lower fixed block 21 when the film is stretched is reduced, and the stability of the film fixing is ensured.

[0031] As shown in Figure 1 and Figure 5 , the pushing structure is arranged on the top of the base 10 for pushing the slidable upper pressing block 20 to slide;

[0032] The pushing structure includes a push cylinder 11 and a pressure sensor 12, the pressure sensor 12 is fixedly installed on the top of the base 10, the push cylinder 11 is slidably connected with the base 10 and located on one side of the pressure sensor 12, the output shaft of the pressure sensor 12 abuts against the lower fixed block 21, the bottom of the lower fixed block 21 is fixedly provided with a limiting protrusion 22, the lower fixed block 21 is slidably connected with the base 10 through the limiting protrusion 22, the top of the base 10 is provided with a sliding channel matched with the limiting protrusion 22, the limiting protrusion 22 is matched with the sliding channel, and the limiting protrusion 22 is slidably arranged in the sliding channel;

[0033] The stretchable lower fixed block 21 is pushed to slide by the push cylinder 11, the limiting block 22 is driven by the lower fixed block 21 to slide in the sliding groove, then the two lower fixed blocks 21 are away from each other, the stretching of the film is realized, the pressure sensor 12 is arranged, the specific pushing force value applied by the push cylinder 11 to the lower fixed block 21 is measured by connecting the pressure sensor 12 with an external display device through the pressure provided by the push cylinder 11 to the pressure sensor 12, then the tensile strength of the film is measured, the structure is simple, and the measurement precision is higher.

[0034] As shown in Figure 1 and Figure 4 , the base 10 is provided with an extrusion push block 13 at the top center position, the base 10 is slidably connected with a vertical electric cylinder 14 at the bottom, the extrusion push block 13 is fixedly connected with the output shaft of the vertical electric cylinder 14, the vertical electric cylinder 14 can push the extrusion push block 13 to move upwards to extrude the film, the base 10 is fixedly installed with a sliding rail at the bottom, the sliding rail is slidably connected with a sliding block, the vertical electric cylinder 14 is fixedly connected with the sliding block, another same pressure sensor 12 is fixedly installed at the lower end of the sliding rail, the size of the upward pushing force provided by the vertical electric cylinder 14 to the extrusion push block 13 is measured through the pressure sensor 12, the film puncture resistance is measured by moving the extrusion push block 13 upwards to extrude the film, and the film test is more comprehensive in cooperation with the tensile strength test.

[0035] The working principle of the utility model is: two upper pressing blocks 20 are disassembled, two ends of the film are placed on the top of two lower fixed blocks 21, the upper pressing block 20 is placed on the lower fixed block 21 and is locked with the corresponding lower fixed block 21 through a bolt, the film is extruded into the anti-off groove 30 through the convex rib 31, the film forms a bending part with the same shape as the anti-off groove 30, the end of the film is limited, the stretchable lower fixed block 21 is pushed to slide by the push cylinder 11, the limiting block 22 is driven by the lower fixed block 21 to slide in the sliding groove, then the two lower fixed blocks 21 are away from each other, the stretching of the film is realized, the pressure sensor 12 is arranged, the specific pushing force value applied by the push cylinder 11 to the lower fixed block 21 is measured by connecting the pressure sensor 12 with an external display device through the pressure provided by the push cylinder 11 to the pressure sensor 12, the base 10 is fixedly installed with a sliding rail at the bottom, the sliding rail is slidably connected with a sliding block, the vertical electric cylinder 14 is fixedly connected with the sliding block, another same pressure sensor 12 is fixedly installed at the lower end of the sliding rail, the size of the upward pushing force provided by the vertical electric cylinder 14 to the extrusion push block 13 is measured through the pressure sensor 12, the film puncture resistance is measured by moving the extrusion push block 13 upwards to extrude the film.

[0036] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A PTFE membrane strength testing apparatus characterized by, The utility model relates to a film clamping device, including: Base (10) for supporting and installing plate -like structure, Slip platform assembly sets up at the top of base (10) and has two groups, two groups slip platform assembly symmetry sets up and clamps the both ends of film respectively, the slip platform assembly includes upper pressing block (20) and lower fixed block (21), one lower fixed block (21) is fixedly connected with base (10), and the other lower fixed block (21) is slidably connected with base (10), and the top of each lower fixed block (21) is provided with an upper pressing block (20), and the upper pressing block (20) is locked with lower fixed block (21) through bolt, and the bottom of upper pressing block (20) is fixedly connected with convex rib (31), the top surface of lower fixed block (21) is provided with anti -drop groove (30), and the convex rib (31) is inserted into anti -drop groove (30) and is pressed into anti -drop groove (30) in film, Push structure sets up at the top of base (10) for pushing the slippage of upper pressing block (20).

2. The PTFE film strength testing apparatus of claim 1, wherein: The upper pressing block (20) and lower fixed block (21) are rectangular block -like structure, the anti -drop groove (30) forms the notch of convex, the convex rib (31) is adapted with anti -drop groove (30), and the convex rib (31) is integrally formed with upper pressing block (20).

3. The PTFE membrane strength testing apparatus of claim 1, wherein: The top surface of lower fixed block (21) is provided with threaded hole, and the top of upper pressing block (20) is provided with mounting hole, and the bolt is fastened through mounting hole and threaded hole and locks upper pressing block (20).

4. The PTFE membrane strength testing apparatus of claim 1, wherein: The push structure includes push cylinder (11) and pressure sensor (12), the pressure sensor (12) is fixedly installed at the top of base (10), the push cylinder (11) is slidably connected with base (10) and is located on one side of pressure sensor (12), and the output shaft of pressure sensor (12) abuts against lower fixed block (21).

5. The PTFE membrane strength testing apparatus of claim 1, wherein: The bottom of lower fixed block (21) is fixedly provided with limit protrusion (22), and the lower fixed block (21) is slidably connected with base (10) through limit protrusion (22).

6. The PTFE membrane strength testing apparatus of claim 5, wherein: The top of base (10) is provided with slide way that is adapted limit protrusion (22), the limit protrusion (22) is adapted with slide way, and the limit protrusion (22) is slidably arranged in slide way.

7. The PTFE membrane strength testing apparatus of claim 1, wherein: The top center position of base (10) is provided with extrusion block (13), and the bottom of base (10) is slidably connected with vertical electric cylinder (14), the extrusion block (13) is fixedly connected with the output shaft of vertical electric cylinder (14), and vertical electric cylinder (14) can push extrusion block (13) and move up and extrude film.

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