Polypropylene film stretching detection equipment

Abstract

The invention discloses polypropylene film stretching detection equipment, which belongs to the technical field of film stretching detection, and has the technical key points that the polypropylene film stretching detection equipment comprises a bottom plate, and transmission and clamping control of a film can be well completed through an arranged positioning rotary clamping mechanism, so that subsequent film detection treatment is facilitated; meanwhile, one-way stretching detection and two-way stretching detection of the polypropylene film can be achieved, the detection time is greatly saved, the detection efficiency is improved, high universality and applicability are achieved, the position of a detection head does not need to be manually adjusted through the arranged detection mechanism, the detection head can be rapidly moved to a proper position, and the detection efficiency is improved. The detection preparation time is greatly shortened, the detection continuity and efficiency are improved, the manual intervention is reduced, the working intensity and the operation difficulty of operators are reduced, the working efficiency is remarkably improved, and the device has the advantages of being convenient to replace and clamp the film roller, capable of biaxially stretching the film and convenient to detect.

Description

Technical Field

[0001] The present invention relates to the field of film stretching detection, in particular to a polypropylene film stretching detection device. Background Art

[0002] Polypropylene film, characterized by its lightweight, transparency, moisture resistance, insulation, and high mechanical strength, is widely used in packaging, electronics, electrical appliances, and other fields. During the production of polypropylene film, tensile properties are a key quality indicator, directly impacting the film's reliability and suitability during subsequent use.

[0003] The existing polypropylene film stretching testing equipment currently has the following problems: on the one hand, the existing stretching mechanism clamp is not convenient for replacing the film roller and better clamping, and the clamping is unstable, which leads to inaccurate test data; on the other hand, the existing stretching testing equipment is mostly unidirectional stretching, which cannot well simulate the bidirectional stress state in actual processing, resulting in poor detection effect. In addition, during the film testing process, the detection position cannot be well adjusted and needs to be manually adjusted continuously, which greatly reduces the detection efficiency and cannot meet the actual use requirements.

[0004] Therefore, it is necessary to provide a polypropylene film stretching testing device to solve the above problems. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the embodiment of the present invention aims to provide a polypropylene film stretching detection device, aiming to solve the technical problems raised in the background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A polypropylene film stretching testing device comprises a base plate, a third moving plate movably mounted on the base plate, a film roller for conveying the film provided on the third moving plate, and further comprising: A positioning and rotating clamping mechanism is installed on the third movable plate and is used for positioning, rotating, and clamping the film roller to stretch it. The positioning and rotating clamping mechanism includes a first butt joint and a second butt joint for positioning the film roller. The first butt joint and the second butt joint are both rotatably installed on the movable vertical plate. The first butt joint and the second butt joint are provided with a first clamping plate and a second clamping plate for positioning and clamping on their outer sides. A stretching drive mechanism, which is installed at the connection between the third moving plate and the bottom plate and is used to drive the film on the third moving plate to perform stretching testing; The detection mechanism is installed on the third movable plate and is used for performing range detection on the stretched film. The detection mechanism includes a detection head and a detection support seat for detection. The detection head is installed on the detection support seat through a second electric push rod. The detection support seat adjusts the position through the rotation of several driven rollers and the first control roller and the second control roller.

[0007] As a further solution of the present invention, the positioning and rotating clamping mechanism also includes a first motor for driving the film roller to rotate, square mounting blocks are provided at both ends of the film roller, square grooves that are adapted to be connected to the square mounting blocks are provided on the first butt joint tube and the second butt joint tube, a first gear is fixedly connected to the second butt joint tube, a second gear is meshedly connected to the first gear, the second gear is fixedly connected to the output shaft of the first motor, and the first motor is fixedly mounted on the movable vertical plate.

[0008] As a further solution of the present invention, the positioning and rotating clamping mechanism also includes a third gear and a fourth gear for driving the first clamping plate and the second clamping plate to perform positioning control on the rotation of the film roller. One end of the first clamping plate is fixedly connected to the third gear, and one end of the second clamping plate is fixedly connected to the fourth gear. The third gear is meshed with the fourth gear. The third gear is rotatably connected to the support plate through the first connecting shaft, and the fourth gear is rotatably connected to the support plate through the second connecting shaft. The support plate is fixedly mounted on the third movable plate.

[0009] As a further solution of the present invention, the positioning and rotating clamping mechanism also includes a second wedge block and a first wedge block for driving the first clamping plate and the second clamping plate to perform clamping control, the first wedge block is fixedly connected to one end of the traction block, the traction block is rotatably connected to one end of the first clamping plate through a traction rod, and a fixed plate is provided inside the support plate, a spring is provided at the connection between the first clamping plate and the fixed plate, one side of the first wedge block is adapted to be slidably connected to the second wedge block, the second wedge block is fixedly connected to the piston rod of the second bidirectional push rod, and a protective cover for protection is provided on the outside of the second bidirectional push rod.

[0010] As a further solution of the present invention, the positioning and rotating clamping mechanism also includes a first bidirectional push rod for driving the movable vertical plate to move and connect, the movable vertical plate is limitedly and slidably connected to the third movable plate, the movable vertical plate is fixedly connected to the piston rod of the first bidirectional push rod, and the first bidirectional push rod is fixedly installed on the third movable plate.

[0011] As a further solution of the present invention, a tensioning roller for tensioning adjustment is provided on one side of the film roller, and the tensioning roller is fixedly connected to the piston rod of the first electric push rod, the first electric push rod is fixedly installed on the support frame, and the support frame is fixedly installed on the third movable plate.

[0012] As a further solution of the present invention, the detection mechanism also includes a transmission belt, a second movable plate and a first movable plate for driving the detection support seat to move and adjust, the detection support seat is limitedly slidably connected to the second movable plate, the second movable plate is limitedly slidably connected to the first movable plate, the first movable plate is limitedly slidably connected to the third movable plate, the transmission belt is transmission-connected to the driven roller, the first control roller and the second control roller, and the detection support seat is fixedly connected to the transmission belt, the first control roller is fixedly connected to the output shaft of the second motor, the second control roller is fixedly connected to the output shaft of the third motor, and the second motor and the third motor are both fixedly mounted on the first movable plate.

[0013] As a further solution of the present invention, the stretching drive mechanism includes a guide slide for driving the third movable plate to move and a bidirectional screw for movement control. The bidirectional screw is rotatably connected to the base plate, the guide slide is fixedly installed on the base plate, the third movable plate is connected to the base plate through a limited sliding connection of the guide slide, and the third movable plate is threadedly connected to the bidirectional screw.

[0014] As a further solution of the present invention, the stretching drive mechanism also includes a fourth motor for driving the bidirectional screw to rotate, the bidirectional screw is fixedly connected to a worm wheel, the worm wheel is meshingly connected to a worm, the worm is rotatably connected to the inside of the base plate, the worm is fixedly connected to the output shaft of the fourth motor, and the fourth motor is fixedly installed inside the base plate.

[0015] In summary, the embodiments of the present invention have the following beneficial effects compared with the prior art: The positioning and rotating clamping mechanism provided in the present invention can well complete the transmission and clamping control of the film, making it convenient for subsequent film detection and processing, and can also realize unidirectional stretching detection and bidirectional stretching detection of polypropylene film. Compared with the traditional single detection method, it can well realize a comprehensive evaluation of the tensile properties of the film, and enhance the competitiveness of the product in the market. Moreover, the device integrates unidirectional stretching and bidirectional stretching functions, and there is no need to switch detection between different devices, which greatly saves detection time and improves detection efficiency. It has strong versatility and applicability, can meet the use of enterprises with different production scales and application requirements, and has broad market promotion value.

[0016] When testing polypropylene films of different specifications through the set detection mechanism, there is no need to manually adjust the position of the detection head. The set automatic adjustment detection mechanism can quickly move the detection head to the appropriate position, greatly shortening the detection preparation time. When continuously testing films of different batches and specifications, the consistency and efficiency of the detection can be significantly improved. Compared with traditional detection methods, the overall detection efficiency can be significantly improved, effectively meeting the detection needs of large-scale production. The function of automatic adjustment of the detection head position reduces manual intervention. The operator only needs to place the film on the detection equipment and start the detection program. There is no need to frequently manually adjust the position of the detection head, which reduces the operator's workload and difficulty of operation, and significantly improves work efficiency.

[0017] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of an embodiment of the invention.

[0019] Figure 2 It is a schematic diagram of the top structure of an embodiment of the invention.

[0020] Figure 3 It is a side structural schematic diagram of an embodiment of the invention.

[0021] Figure 4 Schematic diagram of the installation structure of the film roller in the embodiment of the invention.

[0022] Figure 5 for Figure 4 Schematic diagram of the enlarged structure of A in the middle.

[0023] Figure 6 Schematic diagram of the connection structure inside the support plate in an embodiment of the invention.

[0024] Figure 7 for Figure 6 Schematic diagram of the enlarged structure of B.

[0025] Figure 8 This is a schematic diagram of the exploded structure of the film roller connection in an embodiment of the invention.

[0026] Figure 9 It is a side view schematic diagram of the explosion structure of the film roller connection in the embodiment of the invention.

[0027] Figure 10 It is a schematic diagram of the connection structure of the detection support seat in an embodiment of the invention.

[0028] Figure 11 This is a schematic top view of the structure of the third shift plate connection in an embodiment of the invention.

[0029] Figure 12 for Figure 11 Schematic diagram of the enlarged structure of C in the middle.

[0030] Reference numerals: 1, bottom plate; 2, film; 3, film roller; 4, movable vertical plate; 5, first bidirectional push rod; 6, square mounting block; 7, first butt joint tube; 8, second butt joint tube; 9, square groove; 10, first gear; 11, second gear; 12, first motor; 13, first clamping plate; 14, second clamping plate; 15, third gear; 16, fourth gear; 17, first connecting shaft; 18, second connecting shaft; 19, traction rod; 20, traction block; 21, first wedge block; 22, spring; 23, fixing plate; 24, support plate; 25. Second wedge block; 26. Second bidirectional push rod; 27. Protective cover; 28. Support frame; 29. First electric push rod; 30. Tensioning roller; 31. Detection support seat; 32. Detection head; 33. Second electric push rod; 34. Transmission belt; 35. Driven roller; 36. First control roller; 37. Second control roller; 38. Second motor; 39. Third motor; 40. First shift plate; 41. Second shift plate; 42. Guide slide; 43. Bidirectional screw; 44. Third shift plate; 45. Worm gear; 46. Worm; 47. Fourth motor. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0032] The specific implementation of the present invention is described in detail below with reference to specific embodiments. Example

[0033] See also Figures 1 to 10 A polypropylene film stretching testing device includes a base plate 1, a third moving plate 44 is movably mounted on the base plate 1, and a film roller 3 for transmitting a film 2 is provided on the third moving plate 44, and further includes: The positioning rotation clamping mechanism is installed on the third movable plate 44 and is used for positioning, rotating and clamping the film roller 3 for stretching. The positioning rotation clamping mechanism includes a first butt joint tube 7 and a second butt joint tube 8 for positioning the installation of the film roller 3. The first butt joint tube 7 and the second butt joint tube 8 are both rotatably installed on the movable vertical plate 4. The outer sides of the first butt joint tube 7 and the second butt joint tube 8 are provided with a first clamping plate 13 and a second clamping plate 14 for positioning and clamping.

[0034] Furthermore, the positioning and rotating clamping mechanism also includes a first motor 12 for driving the film roller 3 to rotate, square mounting blocks 6 are provided at both ends of the film roller 3, and square grooves 9 that are adapted to be connected to the square mounting blocks 6 are provided on the first butt joint tube 7 and the second butt joint tube 8. A first gear 10 is fixedly connected to the second butt joint tube 8, and a second gear 11 is meshedly connected to the first gear 10. The second gear 11 is fixedly connected to the output shaft of the first motor 12, and the first motor 12 is fixedly mounted on the movable vertical plate 4.

[0035] Furthermore, the positioning and rotating clamping mechanism also includes a third gear 15 and a fourth gear 16 for driving the first clamping plate 13 and the second clamping plate 14 to perform positioning control on the rotation of the film roller 3. One end of the first clamping plate 13 is fixedly connected to the third gear 15, and one end of the second clamping plate 14 is fixedly connected to the fourth gear 16. The third gear 15 is meshed with the fourth gear 16. The third gear 15 is rotatably connected to the support plate 24 through the first connecting shaft 17, and the fourth gear 16 is rotatably connected to the support plate 24 through the second connecting shaft 18. The support plate 24 is fixedly mounted on the third movable plate 44.

[0036] Furthermore, the positioning and rotating clamping mechanism also includes a second wedge block 25 and a first wedge block 21 for driving the first clamping plate 13 and the second clamping plate 14 to perform clamping control. The first wedge block 21 is fixedly connected to one end of the traction block 20, and the traction block 20 is rotatably connected to one end of the first clamping plate 13 through the traction rod 19, and a fixed plate 23 is provided inside the support plate 24, and a spring 22 is provided at the connection between the first clamping plate 13 and the fixed plate 23. One side of the first wedge block 21 is adapted to be slidably connected with the second wedge block 25, and the second wedge block 25 is fixedly connected to the piston rod of the second bidirectional push rod 26. A protective cover 27 for protection is provided on the outside of the second bidirectional push rod 26.

[0037] Furthermore, the positioning and rotating clamping mechanism also includes a first bidirectional push rod 5 for driving the movable vertical plate 4 to move and connect, the movable vertical plate 4 is limitedly slidably connected to the third movable plate 44, the movable vertical plate 4 is fixedly connected to the piston rod of the first bidirectional push rod 5, and the first bidirectional push rod 5 is fixedly installed on the third movable plate 44.

[0038] Furthermore, a tensioning roller 30 for tensioning adjustment is provided on one side of the film roller 3 , and the tensioning roller 30 is fixedly connected to the piston rod of the first electric push rod 29 , the first electric push rod 29 is fixedly mounted on the support frame 28 , and the support frame 28 is fixedly mounted on the third shift plate 44 .

[0039] Preferably, when performing a stretching test on the film 2, the first bidirectional push rod 5 drives the movable vertical plate 4 to perform corresponding position adjustment control according to the length of the film roller 3, so that the film roller 3 can be installed in the square groove 9 on the first butt joint 7 and the second butt joint 8 through the square mounting block 6 for position limiting. At this time, according to the range of measurement required for the film 2, the first motor 12 on the movable vertical plate 4 can be rotationally controlled, that is, the first motors 12 on both sides rotate synchronously in the same direction to transmit the film 2. At this time, the output shaft of the first motor 12 drives the second gear 11 to rotate, and drives the film roller 3 on the second butt joint 8 and the first butt joint 7 to rotate under the relationship of meshing connection between the second gear 11 and the first gear 10.

[0040] When the film 2 is transmitted to the position where measurement is required, the first motor 12 stops rotating, and the second bidirectional push rod 26 drives the second wedge block 25 to retract at both ends. At this time, the first clamping plate 13 is driven to rotate under the elastic action of the spring 22, and since the third gear 15 and the fourth gear 16 are in a meshing position, the first clamping plate 13 and the second clamping plate 14 rotate close to each other, and the braking and clamping control of the first butt joint 7 and the second butt joint 8 are completed accordingly. At this time, the tensioning roller 30 is driven to rise and fall by the first electric push rod 29 on the support frame 28, thereby completing the tensioning adjustment processing of the film 2, so as to facilitate the subsequent detection processing of the film 2, and significantly improve the subsequent detection efficiency.

[0041] The present invention can simultaneously realize unidirectional stretching detection and bidirectional stretching detection of polypropylene film. Compared with the traditional single detection method, it can well realize the comprehensive evaluation of the tensile properties of film 2, and enhance the competitiveness of the product in the market. In addition, the device integrates unidirectional stretching and bidirectional stretching functions, and there is no need to switch detection between different devices, which greatly saves detection time and improves detection efficiency. It has strong versatility and applicability, can meet the use of enterprises with different production scales and application requirements, and has broad market promotion value. Example

[0042] like Figures 1 to 12 As shown, based on Example 1, this embodiment further includes a stretching drive mechanism, which is installed at the connection between the third moving plate 44 and the bottom plate 1 and is used to drive the film 2 on the third moving plate 44 to perform stretching detection; and The detection mechanism is installed on the third movable plate 44 and is used to perform range detection on the stretched film 2. The detection mechanism includes a detection head 32 and a detection support seat 31 for detection. The detection head 32 is installed on the detection support seat 31 through a second electric push rod 33. The detection support seat 31 adjusts the position through the rotation of several driven rollers 35 and the first control roller 36 and the second control roller 37.

[0043] Furthermore, the stretching drive mechanism includes a guide slide 42 for driving the third movable plate 44 to move and guide, and a bidirectional screw rod 43 for movement control. The bidirectional screw rod 43 is rotatably connected to the base plate 1, and the guide slide 42 is fixedly installed on the base plate 1. The third movable plate 44 is connected to the base plate 1 through a limited sliding connection of the guide slide 42, and the third movable plate 44 is threadedly connected to the bidirectional screw rod 43.

[0044] Furthermore, the stretching drive mechanism also includes a fourth motor 47 for driving the bidirectional screw 43 to rotate, the bidirectional screw 43 is fixedly connected to a worm gear 45, the worm gear 45 is meshingly connected to a worm 46, the worm 46 is rotatably connected to the inside of the base plate 1, the worm 46 is fixedly connected to the output shaft of the fourth motor 47, and the fourth motor 47 is fixedly installed inside the base plate 1.

[0045] Furthermore, the detection mechanism also includes a transmission belt 34, a second moving plate 41 and a first moving plate 40 for driving the detection support seat 31 to move and adjust, the detection support seat 31 is limitedly slidably connected to the second moving plate 41, the second moving plate 41 is limitedly slidably connected to the first moving plate 40, the first moving plate 40 is limitedly slidably connected to the third moving plate 44, the transmission belt 34 is transmission-connected to the driven roller 35, the first control roller 36 and the second control roller 37, and the detection support seat 31 is fixedly connected to the transmission belt 34, the first control roller 36 is fixedly connected to the output shaft of the second motor 38, the second control roller 37 is fixedly connected to the output shaft of the third motor 39, and the second motor 38 and the third motor 39 are both fixedly mounted on the first moving plate 40.

[0046] Preferably, in this embodiment, when the film 2 is transmitted to the range to be detected, due to the tensioning adjustment of the tensioning roller 30, the film 2 is correspondingly in a stretched state. At this time, the worm 46 can be driven to rotate by the fourth motor 47, and the bidirectional screw 43 is driven to rotate under the meshing connection between the worm 46 and the worm wheel 45. At this time, the third shift plate 44 is guided by the guide slide 42 and the control of the threaded connection of the bidirectional screw 43, so that the third shift plate 44 is moved away from each other, thereby completing the stretching processing of the two ends of the film 2, which well simulates the bidirectional stress state in the actual processing process, and the detection effect is good. When it is necessary to detect the unidirectional stress state of the film 2, the rotation and start and stop of the first motor 12 on the movable vertical plate 4 can be adjusted, that is, the film roller 3 at one end is controlled to rotate and the other end is clamped, so as to complete the detection processing of the unidirectional stress state of the film 2 accordingly. The detection range is wide and it is convenient for detection and use.

[0047] And according to the position that needs to be measured when the film 2 is stretched, that is, when the detection position of the detection head 32 is adjusted, the second motor 38 drives the first control roller 36 for rotation control, and the third motor 39 drives the second control roller 37 for rotation control. When the first control roller 36 and the second control roller 37 synchronously turn to opposite directions, the second shift plate 41 can drive the detection head 32 to move and be connected to the first shift plate 40. When the first control roller 36 and the second control roller 37 synchronously turn to the same direction, the second shift plate 41 no longer moves. At this time, the detection support seat 31 drives the detection head 32 to move and be connected to the second shift plate 41 for adjustment. When one of the first control roller 36 and the second control roller 37 rotates and the other no longer rotates and is controlled, the control of the forward and backward and left and right movements of the detection head 32 on the detection support seat 31 can be completed accordingly. The detection range is wide, and there is no need for manual position adjustment and detection processing multiple times, which significantly improves the efficiency of detection.

[0048] By setting up an automatic adjustment detection mode for the position of the detection head 32, when detecting polypropylene films of different specifications, there is no need to manually adjust the position of the detection head 32. The automatic adjustment detection mechanism can quickly move the detection head 32 to the appropriate position according to the specification information of the film 2, greatly shortening the detection preparation time. When continuously detecting films 2 of different batches and different specifications, the consistency and efficiency of the detection can be significantly improved. Compared with traditional detection methods, the overall detection efficiency can be significantly improved, effectively meeting the detection needs of large-scale production. The automatic adjustment function of the position of the detection head 32 reduces manual intervention. The operator only needs to place the film 2 on the detection equipment and start the detection program. There is no need to frequently manually adjust the position of the detection head, which reduces the operator's work intensity and operation difficulty, and significantly improves work efficiency.

[0049] It should be noted that the components in this application are all universal standard parts or components well known to those skilled in the art, which effectively solve the technical problems raised in the background technology.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A polypropylene film stretching testing device, comprising a bottom plate (1), characterized in that: A third moving plate (44) is movably mounted on the bottom plate (1), and a film roller (3) for transmitting the film (2) is provided on the third moving plate (44). The third moving plate (44) further comprises: A positioning rotation clamping mechanism is installed on the third moving plate (44) and is used for positioning, rotating and clamping the film roller (3) for stretching. The positioning rotation clamping mechanism includes a first butt joint tube (7) and a second butt joint tube (8) for positioning the film roller (3). The first butt joint tube (7) and the second butt joint tube (8) are both rotatably installed on the movable vertical plate (4). The outer sides of the first butt joint tube (7) and the second butt joint tube (8) are provided with a first clamping plate (13) and a second clamping plate (14) for positioning and clamping. a stretching drive mechanism, which is installed at the connection between the third movable plate (44) and the bottom plate (1) and is used to drive the film (2) on the third movable plate (44) to perform stretching testing; A detection mechanism is mounted on the third shift plate (44) and is used for performing a range detection on the stretched film (2). The detection mechanism comprises a detection head (32) for detection and a detection support seat (31). The detection head (32) is mounted on the detection support seat (31) via a second electric push rod (33). The detection support seat (31) performs position adjustment detection by rotating a plurality of driven rollers (35) and a first control roller (36) and a second control roller (37).

2. The polypropylene film stretching testing equipment according to claim 1, characterized in that: The positioning and rotating clamping mechanism further includes a first motor (12) for driving the film roller (3) to rotate, square mounting blocks (6) are provided at both ends of the film roller (3), square grooves (9) adapted to be connected to the square mounting blocks (6) are provided on the first butt joint tube (7) and the second butt joint tube (8), a first gear (10) is fixedly connected to the second butt joint tube (8), a second gear (11) is meshedly connected to the first gear (10), the second gear (11) is fixedly connected to the output shaft of the first motor (12), and the first motor (12) is fixedly mounted on the movable vertical plate (4).

3. The polypropylene film stretching testing equipment according to claim 2, characterized in that: The positioning and rotating clamping mechanism also includes a third gear (15) and a fourth gear (16) for driving the first clamping plate (13) and the second clamping plate (14) to position and control the rotation of the film roller (3), one end of the first clamping plate (13) is fixedly connected to the third gear (15), one end of the second clamping plate (14) is fixedly connected to the fourth gear (16), the third gear (15) and the fourth gear (16) are meshed and connected, the third gear (15) is rotatably connected to the support plate (24) through the first connecting shaft (17), the fourth gear (16) is rotatably connected to the support plate (24) through the second connecting shaft (18), and the support plate (24) is fixedly mounted on the third moving plate (44).

4. The polypropylene film stretching testing equipment according to claim 3, characterized in that: The positioning and rotating clamping mechanism further comprises a second wedge block (25) and a first wedge block (21) for driving the first clamping plate (13) and the second clamping plate (14) to perform clamping control, wherein the first wedge block (21) is fixedly connected to one end of the traction block (20), and the traction block (20) is rotatably connected to one end of the first clamping plate (13) through the traction rod (19), and a fixed plate (23) is provided inside the support plate (24), and a spring (22) is provided at the connection between the first clamping plate (13) and the fixed plate (23), and one side of the first wedge block (21) is adapted to be slidably connected to the second wedge block (25), and the second wedge block (25) is fixedly connected to the piston rod of the second bidirectional push rod (26), and a protective cover (27) for protection is provided on the outside of the second bidirectional push rod (26).

5. The polypropylene film stretching testing equipment according to claim 4, characterized in that: The positioning and rotating clamping mechanism further includes a first bidirectional push rod (5) for driving the movable vertical plate (4) to move and connect, the movable vertical plate (4) is limitedly slidably connected to the third movable plate (44), the movable vertical plate (4) is fixedly connected to the piston rod of the first bidirectional push rod (5), and the first bidirectional push rod (5) is fixedly installed on the third movable plate (44).

6. The polypropylene film stretching testing equipment according to claim 5, characterized in that: A tensioning roller (30) for tensioning adjustment is provided on one side of the film roller (3), and the tensioning roller (30) is fixedly connected to the piston rod of the first electric push rod (29), and the first electric push rod (29) is fixedly mounted on the support frame (28), and the support frame (28) is fixedly mounted on the third shift plate (44).

7. The polypropylene film stretching testing device according to claim 1, characterized in that: The detection mechanism further comprises a transmission belt (34), a second shift plate (41) and a first shift plate (40) for driving the detection support seat (31) to move and adjust, the detection support seat (31) is connected to the second shift plate (41) in a limited sliding manner, the second shift plate (41) is connected to the first shift plate (40) in a limited sliding manner, the first shift plate (40) is connected to the third shift plate (44) in a limited sliding manner, the transmission belt (34) is transmission-connected to the driven roller (35), the first control roller (36) and the second control roller (37), and the detection support seat (31) is fixedly connected to the transmission belt (34), the first control roller (36) is fixedly connected to the output shaft of the second motor (38), the second control roller (37) is fixedly connected to the output shaft of the third motor (39), and the second motor (38) and the third motor (39) are both fixedly mounted on the first shift plate (40).

8. The polypropylene film stretching testing device according to claim 1, characterized in that: The stretching drive mechanism includes a guide slide (42) for driving the third movable plate (44) to move and guide, and a bidirectional screw rod (43) for movement control, wherein the bidirectional screw rod (43) is rotatably connected to the base plate (1), the guide slide (42) is fixedly mounted on the base plate (1), the third movable plate (44) is connected to the base plate (1) in a limited sliding manner through the guide slide (42), and the third movable plate (44) is threadedly connected to the bidirectional screw rod (43).

9. The polypropylene film stretching testing device according to claim 8, characterized in that: The stretching drive mechanism further comprises a fourth motor (47) for driving the bidirectional screw (43) to rotate, wherein the bidirectional screw (43) is fixedly connected to a worm wheel (45), and the worm wheel (45) is meshingly connected to a worm (46), and the worm (46) is rotatably connected to the inside of the base plate (1), and the worm (46) is fixedly connected to the output shaft of the fourth motor (47), and the fourth motor (47) is fixedly installed inside the base plate (1).

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