Plastic film tearing resistance detection device

Abstract

The utility model relates to the field of plastic film detection, and discloses a plastic film tear resistance detection device which comprises a working cabinet, the top end in the working cabinet is fixedly connected with a fixing plate, the left side and the right side of the bottom of the fixing plate are fixedly connected with first screw rods, the bottoms of the two first screw rods are fixedly connected with second connecting rods, and the second connecting rods are fixedly connected with the working cabinet. The bottoms of the two second connecting rods are fixedly connected with second screws, and the bottoms of the two second screws are fixedly connected with first bevel gears. According to the utility model, by simultaneously driving the two second motors, the first clamping plate and the second clamping plate clamp the film, the contact area between the film and the first clamping plate and the contact area between the film and the second clamping plate are increased, the film is prevented from falling off, the pointing mark points to the zero scale of the scale mark, and the film is subjected to a vertical tearing test through the driving assembly; and when the driving assembly stops driving, the beacon points to the maximum tensile force which can be borne by the thin film.

Description

Technical Field

[0001] The utility model relates to the field of plastic film detection, in particular to a plastic film tear resistance detection device. Background Art

[0002] Plastic film is made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins. It is used for packaging and as a coating layer. During the production and processing of plastic film, the quality of the film needs to be tested.

[0003] After searching, Chinese patent announcement number CN216247518U discloses a tensile strength detection device for PVC film, including a bottom plate, two brackets are fixedly connected to the upper surface of the bottom plate, a cross frame is fixedly connected to the upper ends of the two brackets, two limiting rings are movably sleeved on the rod surface of the long rod, and a film body to be detected is movably arranged in the middle part of the rod surface of the long rod, and a detection mechanism is arranged at the lower end of the film body, and the detection mechanism includes a base and a connecting piece. The utility model increases the weight borne by the cross bar by adding weights, and the weight of the entire detection mechanism itself is constant. The downward pulling force on the film body is the weight of the detection mechanism itself plus the weight of the weights. The number of weights required for observing the rupture of the film body is observed, and the obtained result is intuitive and easy to calculate. Two springs push two blocks to clamp the weights in the middle part of the cross bar, which avoids the tilt of the center of gravity of the detection mechanism, resulting in different pulling forces on the front and back of the film body, thereby improving the credibility of the detection result. However, in this application, the tensile test of the film is rather cumbersome, and the tensile force that the film can withstand cannot be quickly obtained. In addition, the turntable needs to be manually rotated to clamp the film. The contact area between the film and the clamping plate is small, which affects the detection efficiency. Therefore, a plastic film tear resistance detection device is proposed to solve the above problems. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a plastic film tear resistance detection device, which aims to improve the problems in the prior art that the pressure value that the film can withstand cannot be quickly obtained and the manual clamping is inconvenient and the film is easy to fall off.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a plastic film tear resistance detection device, comprising a working cabinet, a fixed plate is fixedly connected to the internal top of the working cabinet, first screws are fixedly connected to the left and right sides of the bottom of the fixed plate, the bottoms of the two first screws are fixedly connected to the second connecting rods, the bottoms of the two second connecting rods are fixedly connected to the second screws, the bottoms of the two second screws are fixedly connected to the first bevel gears, the bottom ends of the two first bevel gears are meshingly connected with a driving assembly, the outer side of the bottom end of the first screw and the outer side of the top end of the second screw are threadedly connected to the first slider, the opposite sides of the four first sliders are fixedly connected to the first connecting rod, a placement plate is fixedly connected between the two first connecting rods, a movable groove is opened in the middle of the placement plate, a clamping assembly is arranged on the top of the placement plate, a film is arranged between the two clamping assemblies, a pointer is fixedly connected to the left side of the left first slider, a fixed block is fixedly connected to the upper and lower left ends of the inner side of the working cabinet, and a tension ruler is fixedly connected between the two fixed blocks.

[0006] As a further description of the above technical solution: the driving component includes a first motor, the output end of the first motor is fixedly connected to a rotating shaft, the outer side of the rotating shaft is fixedly connected to two second bevel gears, the two second bevel gears are meshed with the first bevel gear on the same side, the middle part of the rotating shaft is fixedly connected to a pole wheel, and a limiting component is arranged on the outer side of the pole wheel at the top of the working cabinet.

[0007] As a further description of the above technical solution: the limit assembly includes a cabinet body, the bottom end of the cabinet body is fixed to the inner bottom side of the working cabinet, a placement groove is opened in the middle of the cabinet body, a limit shaft is arranged inside the placement groove, a movable plate is fixedly connected to the outer side of the limit shaft, a spring is arranged on the front side of the movable plate, the front end of the limit shaft passes through the front end of the cabinet body and is rotatably connected to a pull ring, and the rear end of the limit shaft passes through the rear end of the cabinet body and engages with the outer side of the pole wheel.

[0008] As a further description of the above technical solution: the outer side of the movable plate is in contact with the inner wall of the cabinet.

[0009] As a further description of the above technical solution: the clamping assembly includes two second motors, the rear ends of the two second motors are rotatably connected to the front part of the placement plate, the rear end of the second motor is fixedly connected to a threaded block, the rear side of the movable groove is fixedly connected to a support plate, the rear end of the threaded block passes through the front end of the placement plate and is rotatably connected to the middle part of the support plate, the outer side of the threaded block is threadedly connected to a movable plate at the front end of the support plate, and the bottom ends of the movable plate and the support plate are respectively fixedly connected to a first clamping plate and a second clamping plate.

[0010] As a further description of the above technical solution: a second sliding block is fixedly connected to the middle of the left end of the movable plate, a sliding groove is opened on the left side of the movable groove of the placement plate, and the second sliding block is located inside the sliding groove.

[0011] As a further description of the above technical solution: the support plate and the movable plate are both located inside the placement plate, the first clamping plate and the second clamping plate are both located at the bottom end of the placement plate, and the first clamping plate and the second clamping plate are engaged at opposite sides.

[0012] As a further description of the above technical solution: the upper middle part and the lower middle part of the front side of the tension ruler are both provided with scale marks, and the pointer marks point to the zero mark of the scale marks.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, by controlling the two second motors to rotate synchronously, the two threaded blocks are driven to rotate, so that the movable plate and the first clamping plate slide in the sliding groove through the second slider and move backward until the first clamping plate and the second clamping plate clamp the film, and the opposite ends of the first clamping plate and the second clamping plate are engaged, thereby increasing the contact area between the first clamping plate and the second clamping plate and the film, so that the film is not easy to fall off.

[0015] 2. In the present invention, the first slider moves in the opposite direction of the first screw and the second screw, driving the pointer to move in the opposite direction. The pointer points to the scale mark on the tension gauge, which is convenient for reading the tension value that the film can withstand. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional schematic diagram of a plastic film tear resistance detection device proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of a clamping assembly of a plastic film tear resistance detection device proposed by the utility model;

[0018] Figure 3 The utility model provides a schematic structural diagram of a limit assembly of a plastic film tear resistance detection device.

[0019] Legend:

[0020] 1. working cabinet; 2. fixing plate; 3. first screw rod; 4. second screw rod; 5. first slider; 6. rotating shaft; 7. pole wheel; 8. cabinet; 9. placement slot; 10. moving plate; 11. limiting shaft; 12. spring; 13. pull ring; 14. placement plate; 15. second motor; 16. threaded block; 17. support plate; 18. movable plate; 19. first clamping plate; 20. second clamping plate; 21. fixing block; 22. tension ruler; 23. pointer; 24. first bevel gear; 25. second bevel gear; 26. first motor; 27. first connecting rod; 28. second connecting rod; 29. ​​scale mark; 30. movable slot; 31. slide slot; 32. second slider; 33. film. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Reference Figure 1-3 The utility model provides an embodiment: a plastic film tear resistance detection device, comprising a working cabinet 1, a fixing plate 2 is fixedly connected to the top of the working cabinet 1, a first screw 3 is fixedly connected to the left and right sides of the bottom of the fixing plate 2, the bottoms of the two first screws 3 are fixedly connected to the second connecting rods 28, the bottoms of the two second connecting rods 28 are fixedly connected to the second screws 4, the bottoms of the two second screws 4 are fixedly connected to the first bevel gears 24, the bottom ends of the two first bevel gears 24 are meshed with the driving assembly, and the outer side of the bottom end of the first screw 3 and the outer side of the top end of the second screw 4 are threadedly connected to the first slider 5 , the opposite sides of the four first sliders 5 are fixedly connected with the first connecting rods 27, a placement plate 14 is fixedly connected between the two first connecting rods 27, a movable groove 30 is opened in the middle of the placement plate 14, a clamping assembly is arranged in the middle of the placement plate 14, a film 33 is arranged between the two clamping assemblies, the left side of the left first slider 5 is fixedly connected with a pointer 23, the upper and lower left ends of the inner side of the work cabinet 1 are fixedly connected with fixed blocks 21, a tension ruler 22 is fixedly connected between the two fixed blocks 21, and scale marks 29 are arranged on the upper and middle parts and the lower and middle parts of the front side of the tension ruler 22, and the pointer 23 points to the zero scale of the scale mark 29.

[0023] The film 33 is clamped by the upper and lower clamping assemblies, and the driving assembly drives the first bevel gears 24 on both sides to rotate. When the first bevel gear 24 rotates, it drives the second screw rod 4, the second connecting rod 28 and the first screw 3 on the same side to rotate, so that the two first sliders 5 and the clamping assembly on the upper side move upward, and the two first sliders 5 and the clamping assembly on the lower side move downward, and a tearing test of the film 33 is performed. At the same time, the pointer 23 points to different scales of the scale mark 29 on the tension ruler 22 as the two first sliders 5 on the left move. When the film 33 is broken, the driving assembly stops driving, and the movement of the first slider 5 and the pointer 23 stops accordingly.

[0024] Reference Figure 1 and Figure 3 The driving assembly includes a first motor 26, the output end of the first motor 26 is fixedly connected to a rotating shaft 6, the outer side of the rotating shaft 6 is fixedly connected to two second bevel gears 25, and the two second bevel gears 25 are meshed and connected with the first bevel gear 24 on the same side, and the middle part of the rotating shaft 6 is fixedly connected to a pole wheel 7, and the top of the working cabinet 1 is provided with a limit assembly on the outer side of the pole wheel 7, and the limit assembly includes a cabinet 8, the bottom end of the cabinet 8 is fixed to the inner bottom side of the working cabinet 1, and a placement groove 9 is opened in the middle of the cabinet 8. A limit shaft 11 is arranged inside the placement groove 9, and a moving plate 10 is fixedly connected to the outer side of the limiting shaft 11. The limiting shaft 11 is provided with a spring 12 on the front side of the moving plate 10, and the front end of the limiting shaft 11 passes through the front end of the cabinet 8 and is rotatably connected with a pull ring 13, and the rear end of the limiting shaft 11 passes through the rear end of the cabinet 8 and engages with the outer side of the pole wheel 7, and the outer side of the moving plate 10 is in contact with the inner wall of the cabinet 8.

[0025] The first motor 26 drives the rotating shaft 6 to rotate counterclockwise. When the rotating shaft 6 rotates, it drives the two second bevel gears 25 and the pole wheel 7 on the rotating shaft 6 to rotate. The rotation of the two second bevel gears 25 drives the first bevel gear 24 on the same side to rotate. When the pole wheel 7 rotates counterclockwise, the limit shaft 11 moves forward and drives the movable plate 10 to move forward, squeezing the spring 12. When the first motor 26 stops driving, the spring 12 resets, drives the movable plate 10 and the limit shaft 11 to move backward, jams the pole wheel 7, and prevents the pole wheel 7 from rotating.

[0026] Reference Figure 2The clamping assembly includes two second motors 15, the rear ends of the two second motors 15 are rotatably connected to the front part of the placement plate 14, the rear end of the second motor 15 is fixedly connected to a threaded block 16, and the rear side of the movable groove 30 is fixedly connected to a support plate 17, the rear end of the threaded block 16 passes through the front end of the placement plate 14 and is rotatably connected to the middle part of the support plate 17, the outer side of the threaded block 16 is threadedly connected to a movable plate 18 at the front end of the support plate 17, the bottom ends of the movable plate 18 and the support plate 17 are respectively fixedly connected to the first clamping plate 19 and the second clamping plate 20, and the left end middle part of the movable plate 18 is fixedly connected to a second slider 32, the placement plate 14 is provided with a slide groove 31 on the left side of the movable groove 30, the second slider 32 is located inside the slide groove 31, the support plate 17 and the movable plate 18 are both located inside the placement plate 14, the first clamping plate 19 and the second clamping plate 20 are both located at the bottom end of the placement plate 14 and the first clamping plate 19 and the second clamping plate 20 are engaged with each other on the opposite sides.

[0027] The two second motors 15 rotate synchronously, driving the two threaded blocks 16 to rotate, so that the movable plate 18 and the first clamping plate 19 slide in the sliding groove 31 through the second slider 32 and move backward until the first clamping plate 10 and the second clamping plate 20 clamp the film 33, and the opposite ends of the first clamping plate 10 and the second clamping plate 20 are engaged, thereby increasing the contact area between the first clamping plate 19 and the second clamping plate 20 and the film 33, so that the film 33 is not easy to fall off.

[0028] Working principle: by controlling the two second motors 15 to rotate synchronously, the two threaded blocks 16 are driven to rotate, so that the movable plate 18 and the first clamping plate 19 slide in the slide groove 31 through the second slider 32 and move backward until the first clamping plate 10 and the second clamping plate 20 clamp the film 33, and the opposite ends of the first clamping plate 10 and the second clamping plate 20 are engaged to increase the contact area between the first clamping plate 19 and the second clamping plate 20 and the film 33, so that the film 33 is not easy to fall off, and the first motor 26 drives the rotating shaft 6 to rotate counterclockwise, and the rotation of the rotating shaft 6 drives the two second bevel gears 25 and the pole wheel 7 on the rotating shaft 6 to rotate, and the rotation of the two second bevel gears 25 drives the first bevel gear 24 on the same side to rotate. When the first bevel gear 24 rotates, it drives the second screw rod 4 and the second connecting rod 28 on the same side and the first screw 3 to rotate synchronously, so that the two first sliders 5 on the upper side move upward and the film 33 is stretched upward, and the two first sliders 5 on the lower side move downward and the film 33 is stretched downward, so as to perform a tearing test on the film 33. At the same time, the pointer 23 points to different scales of the scale mark 29 on the tension ruler 22 as the two first sliders 5 on the left side move. When the film 33 is broken, the first motor 26 stops driving, and the movement of the first slider 5 and the pointer 23 stops accordingly. At the same time, the pole wheel 7 stops rotating, and the spring 12 resets, driving the movable plate 10 and the limit shaft 11 to move backward to jam the pole wheel 7.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A plastic film tear resistance detection device, comprising a working cabinet (1), characterized in that: The top of the working cabinet (1) is fixedly connected to a fixing plate (2), the bottom of the fixing plate (2) is fixedly connected to first screw rods (3) on both left and right sides, the bottoms of the two first screw rods (3) are fixedly connected to second connecting rods (28), the bottoms of the two second connecting rods (28) are fixedly connected to second screw rods (4), the bottoms of the two second screw rods (4) are fixedly connected to first bevel gears (24), the bottom ends of the two first bevel gears (24) are meshedly connected to a driving assembly, and the outer side of the bottom end of the first screw rod (3) and the outer side of the top end of the second screw rod (4) are threadedly connected to a first slider ( 5), the first connecting rod (27) is fixedly connected to the opposite side of the four first sliding blocks (5), a placement plate (14) is fixedly connected between the two first connecting rods (27), a movable groove (30) is opened in the middle of the placement plate (14), a clamping assembly is arranged in the middle of the placement plate (14), a film (33) is arranged between the two clamping assemblies, the left side of the first sliding block (5) on the left side is fixedly connected to a pointer (23), the upper and lower left ends of the interior of the working cabinet (1) are fixedly connected to a fixed block (21), and a tension ruler (22) is fixedly connected between the two fixed blocks (21).

2. A plastic film tear resistance detection device according to claim 1, characterized in that: The driving assembly comprises a first motor (26), the output end of the first motor (26) is fixedly connected to a rotating shaft (6), the outer side of the rotating shaft (6) is fixedly connected to two second bevel gears (25), the two second bevel gears (25) are meshingly connected to the first bevel gear (24) on the same side, the middle part of the rotating shaft (6) is fixedly connected to a pole wheel (7), and a limit assembly is arranged at the top end of the working cabinet (1) on the outer side of the pole wheel (7).

3. A plastic film tear resistance detection device according to claim 2, characterized in that: The limit assembly comprises a cabinet (8), the bottom end of the cabinet (8) is fixed to the inner bottom side of the working cabinet (1), a placement groove (9) is provided in the middle of the cabinet (8), a limit shaft (11) is arranged inside the placement groove (9), the outer side of the limit shaft (11) is fixedly connected with a moving plate (10), the limit shaft (11) is provided with a spring (12) on the front side of the moving plate (10), the front end of the limit shaft (11) passes through the front end of the cabinet (8) and is rotatably connected with a pull ring (13), and the rear end of the limit shaft (11) passes through the rear end of the cabinet (8) and is engaged with the outer side of the pole wheel (7).

4. A plastic film tear resistance detection device according to claim 3, characterized in that: The outer side of the movable plate (10) is in contact with the inner wall of the cabinet (8).

5. A plastic film tear resistance detection device according to claim 1, characterized in that: The clamping assembly comprises two second motors (15), the rear ends of the two second motors (15) are rotatably connected to the front part of the placement plate (14), the rear ends of the second motors (15) are fixedly connected to a threaded block (16), the rear side of the movable groove (30) is fixedly connected to a support plate (17), the rear end of the threaded block (16) passes through the front end of the placement plate (14) and is rotatably connected to the middle part of the support plate (17), the outer side of the threaded block (16) is threadedly connected to a movable plate (18) at the front end of the support plate (17), and the bottom ends of the movable plate (18) and the support plate (17) are respectively fixedly connected to a first clamping plate (19) and a second clamping plate (20).

6. A plastic film tear resistance detection device according to claim 5, characterized in that: A second sliding block (32) is fixedly connected to the middle of the left end of the movable plate (18); a sliding groove (31) is provided on the left side of the movable groove (30) of the placement plate (14); and the second sliding block (32) is located inside the sliding groove (31).

7. A plastic film tear resistance detection device according to claim 5, characterized in that: The support plate (17) and the movable plate (18) are both located inside the placement plate (14); the first clamping plate (19) and the second clamping plate (20) are both located at the bottom end of the placement plate (14); and the first clamping plate (19) and the second clamping plate (20) are engaged at opposite sides.

8. A plastic film tear resistance detection device according to claim 1, characterized in that: The upper middle part and the lower middle part of the front side of the tension ruler (22) are both provided with scale marks (29), and the pointer mark (23) points to the zero mark of the scale mark (29).

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