Tilt tester for wrapping film

Abstract

The invention discloses a wrapping film inclination tester, which comprises a support frame, a movable chassis arranged above the support frame, a wrapping film arranged on the movable chassis, a traction assembly arranged on the support frame, a support plate arranged on the support frame, a first detection assembly arranged on one side of the support plate, and a second detection assembly arranged above the support frame. In the invention, the detection patch is adhered to the outer side of the wrapping film in the gap between each cargo, so that the detection patch is stretched along with the cargo when the cargo is inclined to carry out tensile strength test on the wrapping film, and if the detection patch is stretched and unfolded to exceed a preset length, the wrapping film is stretched to exceed the limit of elastic deformation of the wrapping film at the moment; at the moment, the wrapping film is an unqualified piece, other parts do not exceed the unqualified piece, it is indicated that the wrapping film is qualified, the second detection assembly is used for detecting the whole wrapping film, and the first detection assembly is used for detecting layering of the wrapping film.

Description

Technical Field

[0001] The invention mainly relates to the technical field of stretch film testing, and in particular to a stretch film tilt tester. Background Art

[0002] Stretch film, also known as stretch film and heat shrink film, was first produced in China with PVC as the base material and DOA as the plasticizer and self-adhesive PVC stretch film. The application field of stretch film is very wide, mainly used in conjunction with pallets to package scattered goods as a whole, replacing small containers.

[0003] Before wrapping the stretch film, it is necessary to test it. Existing testing devices usually clamp the two sides of the stretch film and then pull the stretch film to detect the strength of the stretch film. However, the strength of the stretch film detected in this way is only the strength of the material itself, not the strength in actual use. In actual use, it is not only the pulling force of the goods on the stretch film, but also the shape of the goods. The edges and corners of the goods will cause friction on the stretch film, and even the stretch film will be punctured when it is pulled to a certain extent. This will cause the stretch film to be damaged before it reaches its original strength limit. Summary of the invention

[0004] The technical solution of the present invention aims at the technical problem that the existing technical solutions are too single, and provides a solution that is significantly different from the existing technologies. It mainly provides a stretch film inclination tester to solve the technical problem that the existing tester mentioned in the above background technology can only detect the material strength of the stretch film itself, but in actual application the stretch film will be affected by the edges and corners of the goods and break prematurely, resulting in the stretch film breaking before reaching the material strength limit.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: A wrapping film inclination tester comprises a support frame, a movable chassis is arranged above the support frame, a wrapping film for wrapping goods is arranged on the movable chassis, a traction component for driving one end of the movable chassis to rise and tilt is arranged on the support frame, a support plate is arranged on the support frame, a first detection component for detecting the stratification of the wrapping film is arranged on one side of the support plate, and a second detection component for detecting the wrapping film as a whole is arranged above the support frame.

[0006] Preferably, the movable chassis is hinged above the support frame, a fixing seat is arranged above the movable chassis, and goods wrapped with a stretch film are arranged inside the fixing seat.

[0007] Preferably, the traction assembly includes a motor, the motor is fixedly mounted on a support frame, a rotating shaft is fixedly mounted on an output end of the motor, the rotating shaft is rotatably connected to the support frame, and a first reel is fixedly mounted on one end of the rotating shaft.

[0008] Preferably, a support wheel is provided on the support frame, a connecting piece is provided on the movable chassis, a pulling rope is wound around the first reel, and the pulling rope passes through the support wheel and is connected to the connecting piece.

[0009] Preferably, the first detection component includes a second reel, the second reel is fixedly mounted on one side of the support plate, a second reel is rotatably connected inside the second reel, a second traction rope is wound around the second reel, a detection patch is provided at one end of the second traction rope, and the detection patch is adhered to the wrapping film.

[0010] Preferably, the second detection assembly comprises an electric telescopic rod, the electric telescopic rod is arranged on a support frame, and a support block is arranged below the electric telescopic rod. Preferably, a limiting rod is arranged below the supporting block, a sliding block is slidably connected to the limiting rod, and a third reel is arranged on the sliding block.

[0011] Preferably, a third reel is provided inside the third reel, and a third traction rope is wound around the third reel.

[0012] Preferably, a guide rod is provided on the third reel, one end of the third traction rope passes through the guide rod and is connected to a hook, and the hook is hooked with the wrapping film on the top of the cargo.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the hook is hung above the wrapping film at the top of the cargo, the electric telescopic rod drives the second detection component to rise a distance, the hook is pulled by the wrapping film and will not move with it, at this time the third traction rope is pulled out a distance, the traction assembly drives the movable chassis to tilt, the movable chassis drives the cargo to tilt to simulate the actual stretching of the wrapping film, the wrapping film has a certain elastic deformation, so the wrapping film is still qualified under certain stretching conditions, and the stretched third traction rope is used to test the deformation of the wrapping film, when the cargo is tilted, the hook will move up and horizontally synchronously, although the third traction rope can test whether the overall deformation of the wrapping film is qualified, but if Excessive local deformation will cause the third traction rope to be unable to be measured. When the third traction rope has not been fully retracted after reaching a certain angle, the movable chassis will be reset. At this time, the second detection component will not be reset together, but the hook will be pulled to move with the goods. If the wrapping film is qualified, it will have a certain strength. The second detection component has also recorded the moving distance before. If the third traction rope is pulled out for a similar distance, it means that the wrapping film is deformed but elastically deformed, and it is a qualified product. If the third traction rope is pulled out for a long time and the recorded distance is significantly different, it means that the wrapping film is deformed and cannot rebound and reset, indicating that the wrapping film is damaged and is a failed product. In this way, it is more accurate to detect whether the wrapping film is a qualified product. And because the stretch film is directly wrapped around the goods, the test is carried out by simulating the actual situation by tilting the goods. It does not test the strength of the stretch film material itself, but tests the strength of the stretch film by testing the fit between the stretch film and the goods in actual use, which is more in line with actual use. At the same time, after the stretch film is wrapped around the goods, the gaps between each good are the key areas for stretching the stretch film. A detection patch is adhered to the outside of the stretch film at the gaps between each good, so that when the goods are tilted to test the stretch film's strength, the detection patch is stretched along with it. If the detection patch is stretched and unfolded beyond a predetermined length, it means that the stretch film is stretched beyond the limit of its own elastic deformation. At this time, this piece of stretch film is unqualified, while other parts that do not exceed the limit are qualified. The second detection component is used to detect the stretch film as a whole, while the first detection component is used to detect the stretch film in layers, so that which part is unqualified can be detected more accurately.

[0014] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the left three-dimensional structure of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure on the right side of the present invention; Figure 4 It is a top view of the three-dimensional structure of the present invention; Figure 5 It is a schematic cross-sectional structural diagram of the second reel of the present invention; Figure 6 It is a schematic cross-sectional structural diagram of a third winder of the present invention; The markings in the figure are: 1. Support frame; 2. Movable chassis; 3. Fixed seat; 4. Wrapping film; 5. Connector; 6. Motor; 7. Rotating shaft; 8. First winder; 9. Pull rope; 10. Support wheel; 11. Support plate; 12. Second winder; 13. Second winding shaft; 14. Second traction rope; 15. Detection patch; 16. Electric telescopic rod; 17. Support block; 18. Limiting rod; 19. Sliding block; 20. Third winder; 21. Hook; 22. Guide rod; 23. Third traction rope; 24. Third winding shaft. DETAILED DESCRIPTION

[0016] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0017] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly connected by technicians in the technical field to which the present invention belongs. The terminology used in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0019] Please refer to the attached Figure 1-Figure 6A wrapping film inclination tester comprises a support frame 1, a movable chassis 2 is arranged above the support frame 1, a wrapping film 4 for wrapping goods is arranged on the movable chassis 2, a traction component for driving one end of the movable chassis 2 to rise and tilt is arranged on the support frame 1, a support plate 11 is arranged on the support frame 1, a first detection component for layered detection of the wrapping film 4 is arranged on one side of the support plate 11, and a second detection component for detecting the wrapping film 4 as a whole is arranged above the support frame 1.

[0020] The specific operation process of the present invention is as follows: the goods are wrapped with the wrapping film 4 and placed above the fixing seat 3, and the bottom goods are fixed by the fixing seat 3, the first detection component and the second detection component are connected to the wrapping film 4, the first detection component is connected to the wrapping film 4 on the top of the goods, and the second detection component is connected to the side of the wrapping film 4 in layers, and the traction component drives one side of the movable chassis 2 to rise, and the movable chassis 2 is tilted to drive the goods to tilt to stretch the wrapping film 4, the first detection component detects the overall deformation of the wrapping film 4, and the second detection component detects the local layered deformation of the wrapping film 4. The combination of the first detection component and the second detection component can realize the detection of the tensile deformation of the extreme angle value of the wrapping film 4, and can also detect the time that the wrapping film 4 can last at a fixed angle.

[0021] Please refer to Figure 1-Figure 4 The movable chassis 2 is hinged above the support frame 1, a fixed seat 3 is arranged above the movable chassis 2, and goods wrapped with a wrapping film 4 are arranged inside the fixed seat 3.

[0022] One side of the movable chassis 2 is hinged to the support frame 1, and the opposite side of the movable chassis 2 is not connected to the support frame 1, but is connected to the traction component. The fixed seat 3 is used to place the wrapped goods, and the fixed seat 3 will fix the bottom of the wrapped goods. The traction component pulls one side of the movable chassis 2 to rise. Since the other side is hinged to the support frame 1, the movable chassis 2 rises in an inclined state, and the rising angle increases. By tilting the goods, the stretching of the wrapping film 4 by the goods in actual use is simulated.

[0023] Please refer to Figure 1-Figure 4 The traction assembly includes a motor 6, which is fixedly mounted on a support frame 1. A rotating shaft 7 is fixedly mounted on the output end of the motor 6. The rotating shaft 7 is rotatably connected to the support frame 1. A first reel 8 is fixedly mounted on one end of the rotating shaft 7. A support wheel 10 is provided on the support frame 1. A connecting member 5 is provided on the movable chassis 2. A pulling rope 9 is wound around the first reel 8. The pulling rope 9 passes through the support wheel 10 and is connected to the connecting member 5.

[0024] Start the motor 6, which drives the rotating shaft 7 to rotate. The rotating shaft 7 drives the first reel 8 to rotate. The first reel 8 rotates to reel in the pulling rope 9. The pulling rope 9 is shortened and passes through the supporting wheel 10 to pull the connecting member 5. The connecting member 5 drives one side of the movable chassis 2 to rise. One end of the movable chassis 2 is pulled up and the whole is inclined.

[0025] Please refer to Figure 5 The first detection component includes a second reel 12, which is fixedly mounted on one side of the support plate 11. The second reel 12 is rotatably connected to a second reel shaft 13, and a second traction rope 14 is wound around the second reel shaft 13. A detection patch 15 is provided at one end of the second traction rope 14, and the detection patch 15 is adhered to the wrapping film 4.

[0026] The detection patch 15 is pulled outward, and the detection patch 15 stretches the second traction rope 14 outward. The second traction rope 14 extends from the inside of the second reel 12 to drive the second reel 13 to rotate. The second reel 13 is provided with a torsion spring for recovering the second traction rope 14 to realize the retraction of the detection patch 15. The detection patch 15 is pasted on the wrapping film 4 that fits the goods by the adhesion points on both sides. The detection patch 15 is curved, and this curved part is in the gap where the goods are stacked. Because the stretching point is usually the middle gap when the goods are tilted, when the goods are tilted and the wrapping film 4 is stretched, the curved part of the detection patch 15 is stretched and unfolded. The curved part of the detection patch 15 can be stretched to a certain length, corresponding to the elastic deformation of the wrapping film 4. When the detection patch 15 is stretched to a certain length, it means that the wrapping film 4 has exceeded its own elastic deformation. At this time, the detection patch 15 at this place will sound an alarm, indicating that this piece of wrapping film 4 is a defective product.

[0027] Please refer to Figure 1-Figure 6 The second detection component includes an electric telescopic rod 16, which is arranged on the support frame 1, a support block 17 is arranged below the electric telescopic rod 16, a limiting rod 18 is arranged below the support block 17, a sliding block 19 is slidably connected to the limiting rod 18, a third reel 20 is arranged on the sliding block 19, a third reel 20 is arranged inside the third reel 20, a third reel shaft 24 is arranged inside the third reel 20, a third traction rope 23 is wound around the third reel shaft 24, a guide rod 22 is arranged on the third reel 20, one end of the third traction rope 23 passes through the guide rod 22 and is connected to a hook 21, and the hook 21 is hooked with the wrapping film 4 on the top of the cargo.

[0028] The hook 21 is hooked with the top of the winding film 4, and then the third reel 20 is driven to rise a distance by the electric telescopic rod 16. At this time, the hook 21 pulls the third traction rope 23 out a distance, and this distance is the limit value of the overall elastic deformation of the winding film 4. When the third traction rope 23 of this length is retracted, it means that the winding film 4 is unqualified as a whole. When the goods are tilted, the third reel 20 will be pushed, and the horizontal movement of the third reel 20 is achieved by the upper sliding block 19 moving along the limiting rod 18. The height movement of the third reel 20 is achieved by the support block 17 pushing the electric telescopic rod 16, and the movement of the third reel 20 will also realize the recording of the overall moving distance. When the goods reach the test angle and need to be reset, the electric telescopic rod 16 is fixed to the electric telescopic rod 16, and the sliding block 19 is also Fixed, if the wrapping film 4 is not stretched beyond the elastic deformation, the wrapping film 4 has a certain strength at this time, and the force of the torsion spring set on the third winding shaft 24 is less than the strength of the normal wrapping film 4, the restoration of the goods will pull the hook 21 through the wrapping film 4, and the hook 21 pulls the third traction rope 23 out from the inside of the third winder 20 and drives the third winding shaft 24 to rotate. When the goods are restored, if the length of the third traction rope 23 pulled out at this time is almost the same as the distance moved by the third winder 20, it means that the overall strength of the wrapping film 4 is still there, no deformation has occurred, and it is a qualified product. If the length of the third traction rope 23 pulled out is less than the distance moved by the third winder 20, it means that the overall strength of the wrapping film 4 is insufficient and deformation has occurred, and the deformation amount of the wrapping film 4 can be roughly calculated based on the short distance.

[0029] The above is an exemplary description of the present invention in combination with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A stretch film tilt tester, comprising a support frame (1), characterized in that: A movable chassis (2) is arranged above the support frame (1), a wrapping film (4) for wrapping goods is arranged on the movable chassis (2), a traction component for driving one end of the movable chassis (2) to rise and tilt is arranged on the support frame (1), a support plate (11) is arranged on the support frame (1), a first detection component for detecting the layering of the wrapping film (4) is arranged on one side of the support plate (11), and a second detection component for detecting the entire wrapping film (4) is arranged above the support frame (1).

2. The stretch film tilt tester according to claim 1, characterized in that: The movable chassis (2) is hinged on the top of the support frame (1), a fixing seat (3) is arranged on the top of the movable chassis (2), and goods wrapped with a wrapping film (4) are arranged inside the fixing seat (3).

3. The stretch film tilt tester according to claim 2, characterized in that: The traction assembly comprises a motor (6), the motor (6) being fixedly mounted on the support frame (1), a rotating shaft (7) being fixedly mounted on the output end of the motor (6), the rotating shaft (7) being rotatably connected to the support frame (1), and a first reel (8) being fixedly mounted on one end of the rotating shaft (7).

4. The stretch film tilt tester according to claim 3, characterized in that: The support frame (1) is provided with a support wheel (10), the movable chassis (2) is provided with a connecting piece (5), a pulling rope (9) is wound around the first reel (8), and the pulling rope (9) passes through the support wheel (10) and is connected to the connecting piece (5).

5. The stretch film tilt tester according to claim 1, characterized in that: The first detection component comprises a second reel (12), the second reel (12) being fixedly mounted on one side of the support plate (11), the second reel (12) being rotatably connected to a second reel shaft (13), a second traction rope (14) being wound around the second reel shaft (13), a detection patch (15) being arranged at one end of the second traction rope (14), and the detection patch (15) being adhered to the wrapping film (4).

6. The stretch film tilt tester according to claim 5, characterized in that: The second detection component comprises an electric telescopic rod (16), wherein the electric telescopic rod (16) is arranged on the support frame (1), and a support block (17) is arranged below the electric telescopic rod (16).

7. The stretch film tilt tester according to claim 6, characterized in that: A limiting rod (18) is arranged below the support block (17), a sliding block (19) is slidably connected to the limiting rod (18), and a third reel (20) is arranged on the sliding block (19).

8. The stretch film tilt tester according to claim 7, characterized in that: A third reel (24) is disposed inside the third reel (20), and a third traction rope (23) is wound around the third reel (24).

9. The stretch film tilt tester according to claim 8, characterized in that: The third reel (20) is provided with a guide rod (22), one end of the third traction rope (23) passes through the guide rod (22) and is connected to a hook (21), and the hook (21) is hooked to the wrapping film (4) on the top of the cargo.

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