Puncture testing device for PE protective film production

Abstract

The invention discloses a puncture test device for PE protective film production, and relates to the technical field of PE protective film tests.The puncture test device comprises a workbench, supporting frames are symmetrically installed at the bottom of the workbench, a fixing frame is fixedly installed at the top of the workbench, and through grooves are symmetrically formed in the two sides of the fixing frame in a penetrating mode; an electric push rod is fixedly installed at the top of the fixing frame, the movable end of the electric push rod penetrates through the fixing frame and is fixedly provided with a movable plate, the guide rods are symmetrically installed at the top of the movable plate, the two guide rods are both in sliding connection with the fixing frame, and a puncture needle is arranged at the fixed center of the bottom of the movable plate. A pressure sensor is arranged at the top of the puncture needle; according to the PE film puncture test device, when a PE film is subjected to puncture test, puncture test can be continuously carried out on a PE film roll, puncture test can be conveniently carried out on different positions on the PE film, the accuracy of the puncture test can be improved, a user can conveniently operate the PE film puncture test device, and convenience and practicability are improved.

Description

Technical Field

[0001] The invention relates to the technical field of PE protective film testing, in particular to a puncture testing device used for PE protective film production. Background Art

[0002] PE protective film, full name Polyethylene, is the simplest macromolecular organic compound and the most widely used macromolecular material in the world today. The biggest advantage of PE protective film is that the protected product is not polluted, corroded, or scratched during production, processing, transportation, storage, and use, and the original smooth and shiny surface is protected, thereby improving the quality and market competitiveness of the product. After the production of PE protective film is completed, it is usually necessary to test its tensile and puncture resistance.

[0003] For example, an explosion-proof membrane puncture test device with publication number CN221303010U drives a fixed plate and an annular pressure plate to move downward by setting a lifting device. The annular pressure plate first presses the explosion-proof membrane, and the fixed plate continues to move to drive the puncture pin to perform a puncture test on the explosion-proof membrane. The annular pressure plate can automatically press the explosion-proof membrane, thereby reducing the labor intensity of manual fixation and ensuring the accuracy of the test results. However, in actual use, if the PE film is subjected to a puncture test after production, the PE film may have uneven thickness after production, and the overall strength of the film is evenly distributed. If the puncture test is only performed on the same position of the PE film, it is not convincing. In order to ensure the accuracy of the test, it is necessary to perform puncture tests on different positions of the PE film. When performing puncture tests on different positions of the PE film, the position of the PE film needs to be adjusted automatically. It is inconvenient to perform continuous puncture tests on the PE film, and there are certain defects in use.

[0004] Therefore, we propose a puncture test device for PE protective film production to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a puncture test device for the production of PE protective film, so as to solve the problem that if the PE film is subjected to a puncture test after production, the PE film may have uneven thickness after production, and the overall strength distribution of the film is uniform. If the puncture test is only performed on the same position of the PE film, it is not convincing. In order to ensure the accuracy of the test, it is necessary to perform puncture tests on different positions of the PE film. When performing puncture tests on different positions of the PE film, it is necessary to adjust the position of the PE film by itself, and it is inconvenient to perform continuous puncture tests on the PE film.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a puncture test device for PE protective film production, comprising a workbench, a support frame is symmetrically installed at the bottom of the workbench, and a fixing frame is fixedly installed on the top of the workbench, and through grooves are symmetrically opened on both sides of the fixing frame, and an electric push rod is fixedly installed on the top of the fixing frame, and the movable end of the electric push rod passes through the fixing frame and is fixedly installed with a movable plate;

[0007] Also includes:

[0008] The guide rods are symmetrically mounted on the top of the movable plate, and both guide rods are slidably connected to the fixed frame. A puncture needle is arranged at the fixed center of the bottom of the movable plate, and a pressure sensor is arranged on the top of the puncture needle, and the pressure sensor is fixedly connected to the movable plate.

[0009] A winding assembly is arranged on one side of the fixed frame and one side of the top of the workbench, and the winding assembly includes a fixed block;

[0010] An anti-wrinkle component is arranged on the top of the workbench and on the other side of the fixed frame;

[0011] The fixed blocks are symmetrically mounted on the top of the workbench and located on one side of the fixed frame. A winding roller is rotatably connected between the two fixed blocks through a damping bearing, and the movable plate is slidably connected to the through slot, and a mounting bar is fixedly mounted on one side of the rear of the movable plate. At the same time, the mounting bar is symmetrically mounted on both sides of the movable plate with fastening rods, and the two fastening rods are fixedly connected to the movable plate;

[0012] The rack is fixedly installed at the bottom of one side of the mounting bar, the top of the workbench is located below the mounting bar and is penetrated by a through groove, and the top of the workbench is located on one side of a fixed block and a mounting frame is fixedly installed, and the interior of the mounting frame is rotatably connected to a rotating shaft, and a rotating gear is fixedly installed on the outer side of the rotating shaft, and the rotating gear is meshed with the rack.

[0013] Preferably, one end of the rotating shaft is symmetrically rotatably connected to a limiting block, and one end of the winding roller passes through a fixed block on one side and is provided with a ratchet groove, and the two limiting blocks are engaged and connected with the ratchet groove.

[0014] By adopting the above technical solution, the clockwise rotation of the rotating shaft can drive the winding roller to rotate, and the counterclockwise rotation of the rotating shaft will not drive the winding roller to rotate.

[0015] Preferably, a first torsion spring is provided at the connection between the two limit blocks and the rotating shaft, and the first torsion spring is in a contracted state.

[0016] By adopting the above technical solution, the two limit blocks can always fit inside the ratchet groove.

[0017] Preferably, the movable plate is symmetrically and slidably connected to a movable rod inside, and telescopic springs are sleeved on the outer tops of the two movable rods, and one end of the telescopic spring is fixedly connected to the movable rod, and the other end of the telescopic spring is fixedly connected to the movable rod, and mounting rings are fixedly installed on the bottoms of the two movable rods, and a rubber ring is fixedly installed on the bottoms of the mounting rings, and a puncture groove is opened through the top center of the workbench, and the inner top of the puncture groove is chamfered.

[0018] By adopting the above technical solution, the PE film can be fixed while performing a puncture test on the PE film.

[0019] Preferably, the anti-wrinkle component includes a mounting block symmetrically installed on the top of the workbench on the other side of the fixed frame, and a first roller is rotatably connected between the two mounting blocks, and a movable plate is arranged above the first roller, and positioning blocks are symmetrically installed on both sides of the bottom of the movable plate, and a second roller is arranged between the two positioning blocks, and rotating rods are symmetrically installed at both ends of the second roller, and the rotating rods are rotatably connected to the positioning blocks.

[0020] By adopting the above technical solution, it is possible to avoid the PE film from being loosened during the movement, avoid the PE film from shifting and wrinkling during the movement, and avoid affecting the subsequent PE film puncture test results.

[0021] Preferably, two groups of support rods are symmetrically installed on both sides of the movable plate, and support blocks are symmetrically installed on both sides of the two mounting blocks, and the support rods are slidably connected to the support blocks. At the same time, compression springs are sleeved on the outer lower part of the two support rods, and one end of the compression spring is fixedly connected to the support block, and the other end of the compression spring is fixedly connected to the support rod, and the compression spring is in a compressed state.

[0022] By adopting the above technical solution, the first roller and the second roller can always be in contact with the PE film.

[0023] Preferably, a connecting block is fixedly installed on one side of the two positioning blocks, and the connecting block is internally slidably connected to a limiting rod, and a return spring is sleeved on the upper outside of the limiting rod, and one end of the return spring is fixedly connected to the limiting rod, and the other end of the return spring is fixedly connected to the connecting block, and the bottom end of the limiting rod is spherical, and one end of the two rotating rods passes through the positioning block and has a plurality of limiting grooves on the outside, and the limiting rod is slidably connected to the limiting groove.

[0024] By adopting the above technical solution, the movement of the PE film will drive the second roller to rotate, and the rotation of the second roller will encounter a certain resistance.

[0025] Preferably, two groups of connecting parts are symmetrically installed on both sides of the mounting ring, and an inclined rod is hinged between the two groups of connecting parts, and a push roller is rotatably connected below the two inclined rods through a damping bearing, and a second torsion spring is arranged between the inclined rod and the two connecting parts.

[0026] By adopting the above technical solution, the PE film can be flattened in the longitudinal direction to avoid wrinkles in the longitudinal direction of the PE film, and further avoid wrinkles in the PE film.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows: the puncture test device for PE protective film production is provided with a winding assembly on one side of the top of the workbench and one side of the fixed frame, so that when the PE film is punctured, the PE film roll can be continuously punctured, and the puncture test is convenient for different positions on the PE film, which can improve the accuracy of the puncture test, and is convenient for users to operate, thereby improving convenience and practicality;

[0028] 1. A winding assembly is provided on one side of the top of the workbench and one side of the fixed frame. When puncturing the PE film, one end of the PE film roll is passed through the anti-wrinkle assembly, passed through the through slot on the fixed frame and wound around the outside of the winding roller, and then the electric push rod can be started to drive the movable plate to descend, and at the same time, the guide rod under the movable plate is driven to slide on the fixed frame for support, so that the rubber ring can contact the PE film, and then the movable plate is allowed to continue to move downward, and the rubber ring and the mounting ring no longer move, so that the movable plate moves to stretch the telescopic spring, and the PE film can be fixed, and then the movement of the movable plate can move the puncture needle to perform a puncture test on the PE film, and the movable plate can drive the mounting bar to move while descending, and after the mounting bar moves, it drives the rack to move downward, and after the rack moves downward, it drives the rotating gear to rotate counterclockwise, so that the rotating shaft rotates counterclockwise, and after the rotating shaft rotates counterclockwise, the limit block can continuously rotate in a circle in the ratchet groove, and under the action of the first torsion spring, the limit block and the ratchet groove can be tightly The winding roller will not rotate under the action of the damping bearing, so that the rotating shaft will not drive the winding roller to rotate when the movable plate descends. After the PE film puncture test is completed, the movable plate is controlled to rise. After the movable plate rises, the rubber ring leaves the PE film, and then as the movable plate rises, the rack can be meshed with the rotating gear, which can drive the rotating gear and the rotating shaft to rotate clockwise. After the rotating shaft rotates clockwise, the winding roller can be driven to rotate through the cooperation of the limit block and the ratchet groove. The resistance of the damping bearing on the winding roller will not be too large, so that the winding roller rotates to rewind the PE film, and then the PE film can be pulled to move. The PE film is driven to move by the reset and rise of the movable plate, and different test positions can be changed. Through the winding component, the PE film roll can be continuously punctured during the PE film puncture test, which is convenient for puncture tests at different positions on the PE film, which can improve the accuracy of the puncture test and facilitate the operation of users, thereby improving convenience and practicality.

[0029] 2. An anti-wrinkle component is provided on the other side of the top of the workbench. The PE film passes through the first roller and the second roller before being pierced. Since the compression spring is in a compressed state, the first roller and the second roller can be in close contact with the PE film. When the PE film moves, it can pull the first roller and the second roller to rotate. The second roller rotates while driving the rotating rod to rotate. After the rotating rod rotates, the limiting rod can be moved on the connecting block through the limiting groove and the reset spring can be stretched, so that the bottom end of the limiting rod is always in close contact with the limiting groove, which can provide resistance to the rotation of the second roller, thereby causing the PE film to be subjected to a certain resistance during the movement, thereby preventing the PE film from being loosened during the movement, preventing the PE film from shifting and wrinkling during the movement, and avoiding affecting the subsequent PE film puncture test effect;

[0030] 3. When the PE film is subjected to a puncture test, the mounting ring descends so that the two flattening rollers can cooperate with the PE film. The continued descent of the mounting ring can push the diagonal rod to rotate on the connecting piece, which can drive the second torsion spring to deform, thereby allowing the two flattening rollers to open to both sides. The anti-wrinkle component can prevent the PE film from wrinkling in the transverse direction. The two flattening rollers can flatten the PE film in the longitudinal direction to prevent wrinkles in the longitudinal direction of the PE film, further preventing wrinkles in the PE film and improving the accuracy of the PE film test. The PE film will not be rolled up until the flattening rollers leave the PE film. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The front three-dimensional structure schematic diagram of the present invention is arranged;

[0032] Figure 2 It is a schematic diagram of the overall rear three-dimensional structure of the present invention;

[0033] Figure 3 It is a schematic diagram of the partial structure of the winding assembly of the present invention;

[0034] Figure 4 This is a schematic diagram of the connection structure between the rotating shaft and the winding roller of the present invention;

[0035] Figure 5 This is a schematic diagram of the structure of the anti-wrinkle component of the present invention;

[0036] Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure of the middle A area;

[0037] Figure 7 For the present invention Figure 5 Schematic diagram of the enlarged structure of the middle B area;

[0038] Figure 8 This is a schematic diagram of the mounting ring structure of the present invention;

[0039] Fig. 9 For the present invention Figure 8 Schematic diagram of the enlarged structure of the middle C area.

[0040] In the figure: 1. workbench; 101. support frame; 102. fixed frame; 1021. through slot; 103. electric push rod; 104. movable plate; 105. guide rod; 106. puncture needle; 107. movable rod; 108. telescopic spring; 109. mounting ring; 110. rubber ring; 111. puncture slot; 112. connecting piece; 113. oblique rod; 114. push roller; 115. second torsion spring; 2. winding assembly; 201. fixed block; 202. winding roller; 203. mounting strip; 204. fastening rod; 2 05. Rack; 206. Through slot; 207. Mounting frame; 208. Rotating shaft; 209. Rotating gear; 210. Limiting block; 211. Ratchet slot; 212. First torsion spring; 3. Anti-wrinkle assembly; 301. Mounting block; 302. First roller; 303. Moving plate; 304. Positioning block; 305. Second roller; 306. Rotating rod; 307. Support rod; 308. Support block; 309. Compression spring; 310. Connecting block; 311. Return spring; 312. Limiting rod; 313. Limiting slot. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] See also Figure 1-Figure 9 The present invention provides a technical solution: a puncture test device for PE protective film production, comprising a workbench 1, a support frame 101 is symmetrically installed at the bottom of the workbench 1, and a fixing frame 102 is fixedly installed on the top of the workbench 1, and through grooves 1021 are symmetrically penetrated on both sides of the fixing frame 102, and an electric push rod 103 is fixedly installed on the top of the fixing frame 102, and the movable end of the electric push rod 103 passes through the fixing frame 102 and is fixedly installed with a movable plate 104;

[0043] Also includes:

[0044] The guide rods 105 are symmetrically mounted on the top of the movable plate 104. Both guide rods 105 are slidably connected to the fixed frame 102. A puncture needle 106 is disposed at the fixed center of the bottom of the movable plate 104. A pressure sensor is disposed on the top of the puncture needle 106. The pressure sensor is fixedly connected to the movable plate 104.

[0045] The winding assembly 2 is arranged on one side of the fixing frame 102 and one side of the top of the workbench 1, and the winding assembly 2 includes a fixing block 201;

[0046] The fixed blocks 201 are symmetrically mounted on the top of the workbench 1 and located on one side of the fixed frame 102. A winding roller 202 is rotatably connected between the two fixed blocks 201 through a damping bearing, and the movable plate 104 is slidably connected to the through slot 1021. A mounting bar 203 is fixedly mounted on one side of the rear of the movable plate 104. At the same time, the mounting bar 203 is symmetrically mounted on both sides of the movable plate 104 with fastening rods 204, and the two fastening rods 204 are fixedly connected to the movable plate 104.

[0047] The rack 205 is fixedly installed at one side of the mounting strip 203, and a through slot 206 is provided at the top of the workbench 1 below the mounting strip 203, and a mounting frame 207 is fixedly installed at one side of the fixed block 201 at the top of the workbench 1, and a rotating shaft 208 is rotatably connected inside the mounting frame 207, and a rotating gear 209 is fixedly installed at one side of the rotating shaft 208, and the rotating gear 209 is meshed and connected with the rack 205;

[0048] One end of the rotating shaft 208 is symmetrically rotatably connected to the limit block 210, and one end of the winding roller 202 passes through the fixed block 201 on one side and is provided with a ratchet groove 211, and the two limit blocks 210 are engaged and connected with the ratchet groove 211;

[0049] A first torsion spring 212 is disposed at the connection between the two limit blocks 210 and the rotating shaft 208, and the first torsion spring 212 is in a contracted state;

[0050] The movable plate 104 is symmetrically and slidably connected to a movable rod 107 inside, and telescopic springs 108 are sleeved on the outer upper parts of the two movable rods 107, and one end of the telescopic spring 108 is fixedly connected to the movable rod 107, and the other end of the telescopic spring 108 is fixedly connected to the movable rod 107, and a mounting ring 109 is fixedly installed on the bottom of the two movable rods 107, and a rubber ring 110 is fixedly installed on the bottom of the mounting ring 109, and a puncture groove 111 is opened through the top center of the workbench 1, and the inner upper part of the puncture groove 111 is chamfered.

[0051] Embodiment 1: Figure 1-Figure 4As shown, a winding assembly 2 is arranged on one side of the top of the workbench 1 and one side of the fixed frame 102. When puncturing the PE film, one end of the PE film roll is passed through the anti-wrinkle assembly 3, passed through the through slot 1021 on the fixed frame 102, and wound around the outside of the winding roller 202. Then, the electric push rod 103 can be started to drive the movable plate 104 to descend, and the guide rod 105 under the movable plate 104 is driven to slide on the fixed frame 102 for support, so that the rubber ring 110 can contact the PE film, and then the movable plate 104 continues to move downward, and the rubber ring 110 and the mounting ring 109 no longer move. The movable plate 104 moves to stretch the telescopic spring 108, which can fix the PE film. After that, the movement of the movable plate 104 can move the puncture needle 106 to perform a puncture test on the PE film. The movable plate 104 can drive the installation bar 203 to move while descending. After the installation bar 203 moves, it drives the rack 205 to move downward. After the rack 205 moves downward, it drives the rotating gear 209 to rotate counterclockwise, so that the rotating shaft 208 rotates counterclockwise. After the rotating shaft 208 rotates counterclockwise, the limit block 210 can continuously rotate in a circle in the ratchet groove 211, and under the action of the first torsion spring 212, the limit block 210 can rotate in a circle in the ratchet groove 211. The limit block 210 and the ratchet groove 211 can fit tightly, and the winding roller 202 will not rotate under the action of the damping bearing, so that the rotating shaft 208 will not drive the winding roller 202 to rotate when the movable plate 104 descends. After the PE film puncture test is completed, the movable plate 104 is controlled to rise. After the movable plate 104 rises, the rubber ring 110 leaves the PE film. Then, as the movable plate 104 rises, the rack 205 can mesh with the rotating gear 209, which can drive the rotating gear 209 and the rotating shaft 208 to rotate clockwise. After the rotating shaft 208 rotates clockwise, the limit block 210 and the rotating gear 209 can be engaged. The cooperation of the ratchet groove 211 drives the winding roller 202 to rotate, and the resistance of the damping bearing on the winding roller 202 will not be too large, so that the winding roller 202 rotates to reel up the PE film, and then the PE film can be pulled to move. The PE film is driven to move by the reset and rise of the movable plate 104, and different test positions can be replaced. Through the winding component 2, when the PE film puncture test is performed, the PE film roll can be continuously punctured. It is convenient to perform puncture tests on different positions on the PE film, which can improve the accuracy of the puncture test and facilitate the operation of users, thereby improving convenience and practicality.

[0052] The anti-wrinkle component 3 is arranged on the top of the workbench 1 and on the other side of the fixing frame 102;

[0053] The anti-wrinkle component 3 includes a mounting block 301 symmetrically mounted on the top of the workbench 1 and located on the other side of the fixed frame 102, and a first roller 302 is rotatably connected between the two mounting blocks 301, and a moving plate 303 is arranged above the first roller 302, and positioning blocks 304 are symmetrically mounted on both sides of the bottom of the moving plate 303, and a second roller 305 is arranged between the two positioning blocks 304, and rotating rods 306 are symmetrically mounted at both ends of the second roller 305, and the rotating rods 306 are rotatably connected to the positioning blocks 304;

[0054] Two groups of support rods 307 are symmetrically installed on both sides of the moving plate 303, and support blocks 308 are symmetrically installed on both sides of the two mounting blocks 301, and the support rods 307 are slidably connected with the support blocks 308. At the same time, compression springs 309 are sleeved on the outer lower parts of the two support rods 307, and one end of the compression spring 309 is fixedly connected to the support block 308, and the other end of the compression spring 309 is fixedly connected to the support rod 307, and the compression spring 309 is in a compressed state;

[0055] A connecting block 310 is fixedly installed on one side of the two positioning blocks 304, and the internal sliding connection of the connecting block 310 is connected to the limiting rod 312, and a return spring 311 is sleeved on the upper outside of the limiting rod 312, and one end of the return spring 311 is fixedly connected to the limiting rod 312, and the other end of the return spring 311 is fixedly connected to the connecting block 310, and the bottom end of the limiting rod 312 is spherical, and one end of the two rotating rods 306 passes through the positioning block 304 and is provided with a plurality of limiting grooves 313 on the outside, and the limiting rod 312 is slidably connected to the limiting groove 313.

[0056] Embodiment 2: Figure 1-Figure 2 and Figure 5-Figure 7 As shown, an anti-wrinkle component 3 is provided on the other side of the top of the workbench 1. The PE film passes through the first roller 302 and the second roller 305 before being pierced. Since the compression spring 309 is in a compressed state, the first roller 302 and the second roller 305 can be in close contact with the PE film. When the PE film moves, it can pull the first roller 302 and the second roller 305 to rotate. When the second roller 305 rotates, it drives the rotating rod 306 to rotate. After the rotating rod 306 rotates, it can move the limiting rod 312 on the connecting block 310 through the limiting groove 313 and stretch the reset spring 311, so that the bottom end of the limiting rod 312 is always in close contact with the limiting groove 313, which can provide resistance to the rotation of the second roller 305, so that the PE film is subjected to a certain resistance during the movement, so as to avoid the PE film from being slackened during the movement, avoid the PE film from shifting wrinkles during movement, and avoid affecting the subsequent PE film puncture test effect.

[0057] Two groups of connecting members 112 are symmetrically installed on both sides of the mounting ring 109 , and an inclined rod 113 is hinged between the two groups of connecting members 112 , and a push roller 114 is rotatably connected below the two inclined rods 113 through a damping bearing, and a second torsion spring 115 is arranged between the inclined rod 113 and the two connecting members 112 .

[0058] Embodiment 3: Figure 1-Figure 2 and Figure 8-Figure 9 As shown, when the PE film is subjected to a puncture test, the mounting ring 109 descends so that the two flattening rollers 114 are engaged with the PE film, and the continued descent of the mounting ring 109 can push the inclined rod 113 to rotate on the connecting member 112, which can drive the second torsion spring 115 to deform, thereby allowing the two flattening rollers 114 to open to both sides, and the anti-wrinkle component 3 can prevent the PE film from wrinkling in the transverse direction, and the two flattening rollers 114 can flatten the PE film in the longitudinal direction to prevent the PE film from wrinkling in the longitudinal direction, further preventing the PE film from wrinkling, thereby improving the accuracy of the PE film test, and the PE film will not be rolled up until the flattening rollers 114 leave the PE film.

[0059] Working principle: When using the puncture test device for PE protective film production, first, according to Figure 1-Figure 9As shown, when puncturing the PE film, one end of the PE film roll is passed through the anti-wrinkle component 3, passed through the through slot 1021 on the fixed frame 102, and wound around the outside of the winding roller 202. Then, the electric push rod 103 can be started to drive the movable plate 104 to descend, and the guide rod 105 below the movable plate 104 is driven to slide on the fixed frame 102 for support, so that the rubber ring 110 can contact the PE film, and then the movable plate 104 continues to move downward, and the rubber ring 110 and the mounting ring 109 no longer move. The movable plate 104 moves to stretch the telescopic spring 108, which can fix the PE film. After that, the movement of the movable plate 104 can move the puncture needle 106 to perform a puncture test on the PE film. The movable plate 104 can drive the installation bar 203 to move while descending. After the installation bar 203 moves, it drives the rack 205 to move downward. After the rack 205 moves downward, it drives the rotating gear 209 to rotate counterclockwise, so that the rotating shaft 208 rotates counterclockwise. After the rotating shaft 208 rotates counterclockwise, the limit block 21 0 can continuously rotate in a circle in the ratchet groove 211, and under the action of the first torsion spring 212, the limit block 210 and the ratchet groove 211 can be closely fitted, and the winding roller 202 will not rotate under the action of the damping bearing, so that when the movable plate 104 descends, the rotating shaft 208 will not drive the winding roller 202 to rotate. After the PE film puncture test is completed, the movable plate 104 is controlled to rise, and after the movable plate 104 rises, the rubber ring 110 leaves the PE film, and then as the movable plate 104 rises, the rack 202 can be 05 is meshed with the rotating gear 209, which can drive the rotating gear 209 and the rotating shaft 208 to rotate clockwise. After the rotating shaft 208 rotates clockwise, the winding roller 202 can be driven to rotate through the cooperation of the limit block 210 and the ratchet groove 211. The resistance of the damping bearing on the winding roller 202 will not be too large, so that the winding roller 202 rotates to rewind the PE film, and then the PE film can be pulled to move. The PE film is driven to move by the reset and rise of the movable plate 104, and different test positions can be changed;

[0060] Before being worn, the PE film passes through the first roller 302 and the second roller 305. Since the compression spring 309 is in a compressed state, the first roller 302 and the second roller 305 can be in close contact with the PE film. When the PE film moves, it can pull the first roller 302 and the second roller 305 to rotate. The rotation of the second roller 305 drives the rotating rod 306 to rotate. After the rotating rod 306 rotates, it can move the limiting rod 312 on the connecting block 310 through the limiting groove 313 and stretch the reset spring 311, so that the bottom end of the limiting rod 312 is always in close contact with the limiting groove 313, which can provide resistance to the rotation of the second roller 305. , so that the PE film is subjected to a certain resistance during the movement, thereby preventing the PE film from being loosened during the movement. When the PE film is subjected to a puncture test, the mounting ring 109 descends so that the two flattening rollers 114 and the PE film can cooperate. The continued descent of the mounting ring 109 can push the inclined rod 113 to rotate on the connecting piece 112, which can drive the second torsion spring 115 to deform, thereby allowing the two flattening rollers 114 to open to both sides. The anti-wrinkle component 3 can prevent the PE film from wrinkling in the transverse direction, and the two flattening rollers 114 can flatten the PE film in the longitudinal direction to prevent the PE film from wrinkling in the longitudinal direction.

[0061] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0062] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to 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 puncture test device for PE protective film production, comprising a workbench (1), a support frame (101) being symmetrically mounted at the bottom of the workbench (1), a fixing frame (102) being fixedly mounted at the top of the workbench (1), and through grooves (1021) being symmetrically penetrated on both sides of the fixing frame (102), an electric push rod (103) being fixedly mounted at the top of the fixing frame (102), and a movable end of the electric push rod (103) passing through the fixing frame (102) and being fixedly mounted with a movable plate (104); It is characterized in that Also includes: Guide rods (105) are symmetrically mounted on the top of the movable plate (104), and both guide rods (105) are slidably connected to the fixed frame (102). A puncture needle (106) is arranged at the fixed center of the bottom of the movable plate (104), and a pressure sensor is arranged on the top of the puncture needle (106), and the pressure sensor is fixedly connected to the movable plate (104); A winding assembly (2) is arranged on one side of the fixing frame (102) and one side of the top of the workbench (1), and the winding assembly (2) comprises a fixing block (201); An anti-wrinkle component (3) is arranged on the top of the workbench (1) and on the other side of the fixing frame (102); A fixed block (201) is symmetrically mounted on the top of the workbench (1) and located on one side of the fixed frame (102); a winding roller (202) is rotatably connected between the two fixed blocks (201) via a damping bearing, and the movable plate (104) is slidably connected to the through groove (1021), and a mounting bar (203) is fixedly mounted on one side of the rear of the movable plate (104); and fastening rods (204) are symmetrically mounted on both sides of the mounting bar (203) located on the movable plate (104), and the two fastening rods (204) are fixedly connected to the movable plate (104); The rack (205) is fixedly mounted below one side of the mounting strip (203); a through slot (206) is provided through the top of the workbench (1) located below the mounting strip (203); a mounting frame (207) is fixedly mounted on one side of a fixed block (201) located on the top of the workbench (1); a rotating shaft (208) is rotatably connected to the inside of the mounting frame (207); a rotating gear (209) is fixedly mounted on the outside of the rotating shaft (208); and the rotating gear (209) is meshingly connected to the rack (205).

2. A puncture test device for PE protective film production according to claim 1, characterized in that: One end of the rotating shaft (208) is symmetrically rotatably connected to a limit block (210), and one end of the winding roller (202) passes through a fixed block (201) on one side and is provided with a ratchet groove (211), and the two limit blocks (210) are engaged and connected with the ratchet groove (211).

3. A puncture test device for PE protective film production according to claim 2, characterized in that: A first torsion spring (212) is provided at the connection between the two limit blocks (210) and the rotating shaft (208), and the first torsion spring (212) is in a contracted state.

4. The puncture test device for PE protective film production according to claim 1, characterized in that: The movable plate (104) is symmetrically and slidably connected to a movable rod (107) inside, and a telescopic spring (108) is sleeved on the outer upper part of the two movable rods (107), and one end of the telescopic spring (108) is fixedly connected to the movable rod (107), and the other end of the telescopic spring (108) is fixedly connected to the movable rod (107), and a mounting ring (109) is fixedly installed at the bottom of the two movable rods (107), and a rubber ring (110) is fixedly installed at the bottom of the mounting ring (109), and a puncture groove (111) is opened through the top center of the workbench (1), and the inner upper part of the puncture groove (111) is chamfered.

5. The puncture test device for PE protective film production according to claim 1, characterized in that: The anti-wrinkle component (3) comprises a mounting block (301) symmetrically mounted on the top of the workbench (1) and located on the other side of the fixed frame (102), and a first roller (302) is rotatably connected between the two mounting blocks (301), and a movable plate (303) is arranged above the first roller (302), and positioning blocks (304) are symmetrically mounted on both sides of the bottom of the movable plate (303), and a second roller (305) is arranged between the two positioning blocks (304), and rotating rods (306) are symmetrically mounted at both ends of the second roller (305), and the rotating rods (306) are rotatably connected to the positioning blocks (304).

6. A puncture test device for PE protective film production according to claim 5, characterized in that: Two groups of support rods (307) are symmetrically installed on both sides of the movable plate (303), and support blocks (308) are symmetrically installed on both sides of the two mounting blocks (301), and the support rods (307) are slidably connected to the support blocks (308), and at the same time, compression springs (309) are sleeved on the outer lower parts of the two support rods (307), and one end of the compression spring (309) is fixedly connected to the support block (308), and the other end of the compression spring (309) is fixedly connected to the support rod (307), and the compression spring (309) is in a compressed state.

7. The puncture test device for PE protective film production according to claim 5, characterized in that: A connecting block (310) is fixedly installed on one side of the two positioning blocks (304), and the interior of the connecting block (310) is slidably connected to a limiting rod (312), and a return spring (311) is sleeved on the upper part of the outside of the limiting rod (312), and one end of the return spring (311) is fixedly connected to the limiting rod (312), and the other end of the return spring (311) is fixedly connected to the connecting block (310), and the bottom end of the limiting rod (312) is spherical, and one end of the two rotating rods (306) passes through the positioning block (304) and is provided with a plurality of limiting grooves (313) on the outside, and the limiting rod (312) is slidably connected to the limiting groove (313).

8. The puncture test device for PE protective film production according to claim 4, characterized in that: Two groups of connecting members (112) are symmetrically installed on both sides of the mounting ring (109), and an inclined rod (113) is hinged between the two groups of connecting members (112), and a push roller (114) is rotatably connected below the two inclined rods (113) through a damping bearing, and a second torsion spring (115) is arranged between the inclined rod (113) and the two connecting members (112).

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