Strength detection equipment for high-weather-resistance PVC (polyvinyl chloride) surface protective film

Abstract

The utility model provides strength detection equipment for a high-weather-resistance PVC (polyvinyl chloride) surface protective film. Relates to the technical field of protective film detection. The device comprises a base, a tension sensor, a fixing mechanism, a stretching detection mechanism and a viscosity detection mechanism, a support is fixedly connected to the base, a hydraulic cylinder is arranged on the support, a tension sensor is fixedly installed at one end of the hydraulic cylinder, a clamping groove is formed in the bottom of the tension sensor, fixing mechanisms are arranged on the tension detection mechanism and the viscosity detection mechanism, and the fixing mechanisms are connected with the clamping groove; the fixing mechanism comprises a connecting rod, an external thread, a gear, a rack and a torsional spring. The strength detection equipment for the high-weather-resistance PVC surface protective film has the advantages that the tensile detection mechanism and the viscosity detection mechanism can be quickly disassembled and assembled without tools through cooperation of all the components, and convenience and efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of protective film detection, in particular to a strength detection device for a highly weather-resistant PVC surface protective film. Background Art

[0002] PVC is mainly composed of polyvinyl chloride, which is slightly yellow, translucent, and shiny. Its transparency is better than polyethylene and polypropylene, but worse than polystyrene. Depending on the amount of additives used, it is divided into soft and hard polyvinyl chloride. Soft products are flexible and tough, and feel sticky. Hard products are harder than low-density polyethylene but lower than polypropylene, and will show whitening at bends. Common products include sheets, pipes, shoe soles, toys, doors and windows, wire sheaths, stationery, etc. PVC is a polymer material that uses a chlorine atom to replace a hydrogen atom in polyethylene. The tensile properties and viscosity of the PVC protective film adhesive layer directly affect the subsequent use of the protective film.

[0003] In the prior art, the detection equipment for the adhesive layer of the protective film is relatively cumbersome to operate in actual use. In order to solve the above problem, the document with application number: 202122762451.7 discloses a protective film adhesive layer detection equipment, which includes a base, the top of the base is respectively connected to a bracket and a movable plate, the inner top of the bracket and the surface of the movable plate are jointly installed with a tensile detection component, and the surface edge of the movable plate is provided with a viscosity detection component. By placing the two ends of the protective film with the adhesive layer on the support plate in sequence, a person pushes the second plywood to approach the first plywood, and then uses the first screw to connect to the inside of the first plywood to fix the protective film, and then uses the control panel to control the push cylinder to drive the tension sensor to pull upward, so that the tensile value of the protective film with the adhesive layer can be detected, and the tension sensor is pushed downward by pushing the cylinder so that the bottom surface of the detection block sticks to the adhesive layer of the protective film, and then the detection block with a hole in the pushing cylinder is raised, so that the viscosity of the protective film adhesive layer can be measured, and then the quality of the protective film and its adhesive layer can be judged;

[0004] However, after reading the above patent documents, the following deficiencies were found: the existing tensile detection components and viscosity detection components are generally fixed on the tensile sensor by bolts, which complicates the disassembly and assembly process during the replacement of the tensile detection components and the viscosity detection components, increases time and labor costs, and requires the use of tools, thereby greatly reducing the efficiency of protective film detection.

[0005] Therefore, the utility model provides a strength testing device for a highly weather-resistant PVC surface protective film to solve the above-mentioned problem. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a strength testing device for a high-weather-resistant PVC surface protective film, comprising: a base, a tension sensor, a fixing mechanism, a stretching detection mechanism, and a viscosity detection mechanism;

[0007] A bracket is fixedly connected to the base, and a hydraulic cylinder is provided on the bracket. A tension sensor is fixedly installed at one end of the hydraulic cylinder. A card slot is provided at the bottom of the tension sensor. The tensile testing mechanism and the viscosity testing mechanism are both provided with a fixing mechanism, and the fixing mechanisms are both connected to the card slot.

[0008] The fixing mechanism includes a connecting rod, an external thread, a gear, a rack and a torsion spring. The connecting rod is plugged into the slot. The tensile detection mechanism and the viscosity detection mechanism are both rotatably connected to the connecting rod. Both sides of the connecting rod are fixedly connected with external threads. Both external threads are engaged with the slot. Through the coordinated design between the tension sensor, the slot and the fixing mechanism, the tensile detection mechanism and the viscosity detection mechanism can be quickly disassembled and installed without the use of tools.

[0009] Preferably, a gear is fixedly sleeved at one end of the connecting rod, and a rack is meshedly connected to the gear. The two racks are slidingly connected to the tensile detection mechanism and the viscosity detection mechanism respectively. The rack is pushed in the tensile detection mechanism by a push plate, and at the same time, the rack is meshed with the rack for transmission, so that the gear drives the corresponding connecting rod to rotate a certain angle on the tensile detection mechanism, and at the same time, the connecting rod drives the torsion spring to rotate synchronously so that the torsion spring accumulates force, and at the same time, the connecting rod drives the two external threads to rotate synchronously and makes the two external threads and the connecting rod correspond to the slots on the tension sensor, and the slots are adapted to the connecting rod and the two external threads, so that the two external threads are conveniently connected to the slots.

[0010] Preferably, a groove 1 is provided at one end of the connecting rod, and a torsion spring is fixedly installed in the groove 1. One end of the two torsion springs are fixedly connected to the tensile detection mechanism and the viscosity detection mechanism respectively. The elastic potential energy of the torsion spring causes the connecting rod to rotate in the opposite direction and return to its original state.

[0011] Preferably, both the tensile testing mechanism and the viscosity testing mechanism are provided with cavities, and the two gears rotate in the two cavities respectively, which facilitates the rotation of the gears.

[0012] Preferably, bearings are fixedly sleeved on both connecting rods, and outer walls of the two bearings are fixedly connected to the tensile detection mechanism and the viscosity detection mechanism respectively, so as to facilitate the rotation of the two connecting rods.

[0013] Preferably, a plurality of limit blocks are fixedly connected to the tensile detection mechanism and the viscosity detection mechanism, and a plurality of limit grooves are provided at the bottom of the tension sensor and are adapted to the plurality of limit blocks for limiting the tensile detection mechanism and the viscosity detection mechanism to prevent them from rotating.

[0014] Preferably, one end of the two racks passes through the tensile testing mechanism and the viscosity testing mechanism respectively, and one end of the two racks is fixedly connected to a push plate to facilitate pushing the racks.

[0015] Preferably, a movable platform is provided on the base, the tensile detection mechanism and the viscosity detection mechanism are arranged on the movable platform, a control module is provided on the bracket, the hydraulic cylinder and the tension sensor are both connected to the control module, and the hydraulic cylinder is driven and controlled by the control module; when the viscosity detection component is actually used, the control panel is controlled to push the cylinder to drive the detection block to move downward, so that the bottom surface of the detection block is bonded to the adhesive layer of the protective film between the two groups of pressure blocks, and the control panel is controlled to push the cylinder to drive the detection block to move upward, and the viscosity value of the protective film adhesive layer can be detected by the tension sensor, and the tension sensor displays the value on the display of the control panel. On the screen; first, the protective film with the adhesive layer is placed on the support plate, the second clamping plate is pushed to clamp the protective film, and then the first screw is used to connect the first clamping plate to fix the protective film, and the control panel is controlled to push the cylinder to drive the tension sensor to move upward, so that the protective film and the adhesive layer are stretched synchronously, and then the stretching value of the protective film and its adhesive layer can be detected. The specific structure and working principle of the tension sensor, control module, hydraulic cylinder, stretching detection mechanism and viscosity detection mechanism can refer to the document with application number: 202122762451.7 proposed in this application. This is the prior art and will not be elaborated on.

[0016] Compared with related technologies, the strength testing equipment for high-weather-resistant PVC surface protective film provided by the present invention has the following beneficial effects:

[0017] The utility model provides a strength testing device for highly weather-resistant PVC surface protective film. Through the coordinated design between the tension sensor, the card slot, and the fixing mechanism, the tensile testing mechanism and the viscosity testing mechanism can be quickly disassembled and installed without the use of tools, thereby improving convenience and efficiency. In addition, the device has a simple structure and is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the assembly structure of a viscosity detection mechanism of a strength detection device for a high-weather-resistant PVC surface protective film provided by the utility model;

[0019] Figure 2 This is a schematic diagram of the assembly structure of a tensile testing mechanism for a strength testing device for a high-weather-resistant PVC surface protective film provided by the present invention;

[0020] Figure 3 for Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0021] Figure 4 The present invention provides a schematic diagram of the fixing mechanism structure of a strength testing device for a highly weather-resistant PVC surface protective film.

[0022] Numbers in the figure: 1. Base; 2. Bracket; 3. Hydraulic cylinder; 4. Tension sensor; 5. Slot; 6. Tensile detection mechanism; 7. Viscosity detection mechanism; 8. Connecting rod; 9. External thread; 10. Gear; 11. Rack; 12. Torsion spring; 13. Limit block; 14. Bearing; 15. Moving platform; 16. Control module; 17. Push plate. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings and implementation examples.

[0024] Please refer to Figures 1-4 , a strength testing device for a high-weather-resistant PVC surface protective film comprises: a base 1, a tension sensor 4, a fixing mechanism, a tensile testing mechanism 6, and a viscosity testing mechanism 7;

[0025] A bracket 2 is fixedly connected to the base 1, and a hydraulic cylinder 3 is provided on the bracket 2. A tension sensor 4 is fixedly installed at one end of the hydraulic cylinder 3. A card slot 5 is provided at the bottom of the tension sensor 4. The tensile detection mechanism 6 and the viscosity detection mechanism are both provided with a fixing mechanism, and the fixing mechanisms are both connected to the card slot 5.

[0026] The fixing mechanism includes a connecting rod 8, an external thread 9, a gear 10, a rack 11 and a torsion spring 12. The connecting rod 8 is plugged into the slot 5. The tensile detection mechanism 6 and the viscosity detection mechanism 7 are both rotatably connected to the connecting rod 8. Both sides of the connecting rod 8 are fixedly connected to the external thread 9, and both external threads are engaged with the slot 5. Through the coordinated design between the tension sensor 4, the slot 5 and the fixing mechanism, the tensile detection mechanism 6 and the viscosity detection mechanism 7 can be quickly disassembled and installed without using tools.

[0027] In this method, a gear 10 is fixedly sleeved on one end of the connecting rod 8, and a rack 11 is meshedly connected to the gear 10. The two racks 11 are slidingly connected to the tensile detection mechanism 6 and the viscosity detection mechanism 7 respectively. The rack 11 is pushed on the tensile detection mechanism 6 by the push plate 17, and at the same time, the rack 11 is meshed with the rack 11 for transmission, so that the gear 10 drives the corresponding connecting rod 8 to rotate a certain angle on the tensile detection mechanism 6, and at the same time, the connecting rod 8 drives the torsion spring 12 to rotate synchronously so that the torsion spring 12 accumulates force, and at the same time, the connecting rod 8 drives the two external threads 9 to rotate synchronously and makes the two external threads 9 and the connecting rod 8 correspond to the slot 5 on the tension sensor 4, and the slot 5 is adapted to the connecting rod 8 and the two external threads 9, so that the two external threads 9 are conveniently connected to the slot 5.

[0028] In this method, a groove 1 is provided at one end of the connecting rod 8, and a torsion spring 12 is fixedly installed in the groove 1. One end of the two torsion springs 12 is fixedly connected to the tensile detection mechanism 6 and the viscosity detection mechanism 7 respectively. The elastic potential energy of the torsion spring 12 causes the connecting rod 8 to rotate in the opposite direction and return to its original state.

[0029] In this embodiment, cavities are provided on the stretching detection mechanism 6 and the viscosity detection mechanism, and the two gears 10 rotate in the two cavities respectively, which facilitates the rotation of the gears 10 .

[0030] In this embodiment, bearings 14 are fixedly mounted on both connecting rods 8 , and outer walls of the two bearings 14 are fixedly connected to the tensile testing mechanism 6 and the viscosity testing mechanism 7 , respectively, to facilitate the rotation of the two connecting rods 8 .

[0031] In this method, multiple limit blocks 13 are fixedly connected to the tensile detection mechanism 6 and the viscosity detection mechanism 7. Multiple limit grooves are provided at the bottom of the tension sensor 4 and are compatible with the multiple limit blocks 13, which are used to limit the tensile detection mechanism 6 and the viscosity detection mechanism 7 to prevent them from rotating.

[0032] In this embodiment, one end of the two racks 11 passes through the tensile testing mechanism and the viscosity testing mechanism 7 respectively, and one end of the two racks 11 is fixedly connected to a push plate 17 to facilitate pushing the racks 11 .

[0033] In this embodiment, a movable platform 15 is provided on the base 1, and the tensile detection mechanism 6 and the viscosity detection mechanism are arranged on the movable platform 15. A control module 16 is provided on the bracket 2, and the hydraulic cylinder 3 and the tension sensor 4 are both connected to the control module 16, and the hydraulic cylinder 3 is driven and controlled by the control module 16; when the viscosity detection component is actually used, the control panel is controlled to push the cylinder to drive the detection block to move downward, so that the bottom surface of the detection block is bonded to the adhesive layer of the protective film between the two groups of pressure blocks, and the control panel is controlled to push the cylinder to drive the detection block to move upward, and the viscosity value of the protective film adhesive layer can be detected by the tension sensor, and the tension sensor displays the value on the control panel. On the display screen of the control panel; first, the protective film with the adhesive layer is placed on the support plate, the second plywood is pushed to clamp the protective film, and then the first screw is used to connect the first plywood to fix the protective film, and the control panel is controlled to push the cylinder to drive the tension sensor to move upward, so that the protective film and the adhesive layer are stretched synchronously, and then the stretching value of the protective film and its adhesive layer can be detected. The specific structure and working principle of the tension sensor 4, control module 16, hydraulic cylinder 3, stretching detection mechanism 6 and viscosity detection mechanism 7 can refer to the document with application number: 202122762451.7 proposed in this application. This is the prior art and will not be elaborated on.

[0034] The working principle of the strength testing device of a high-weather-resistant PVC surface protective film provided by the present invention is as follows: when in use, first push the rack 11 on the tensile testing mechanism 6 through the push plate 17, and at the same time, the rack 11 is meshed with the rack 11 for transmission, so that the gear 10 drives the corresponding connecting rod 8 to rotate a certain angle on the tensile testing mechanism 6, and at the same time, the connecting rod 8 drives the torsion spring 12 to rotate synchronously so that the torsion spring 12 stores force, and at the same time, the connecting rod 8 drives the two external threads 9 to rotate synchronously and makes the two external threads 9 and the connecting rod 8 correspond to the slot 5 on the tension sensor 4, and then, the connecting rod 8 and the two external threads 9 are inserted into the slot 5 together, and at the same time, the tension sensor 6 on the tensile testing mechanism 6 is tightened. The plurality of limit blocks 13 are respectively connected to the plurality of limit slots on the tension sensor 4, and then the push plate 17 is released. At this time, the elastic potential energy of the torsion spring 12 causes the connecting rod 8 to rotate in the opposite direction and return to its original state. During this process, the connecting rod 8 drives the two external threads 9 to rotate in the opposite direction and causes the two external threads 9 to engage with the slots 5, thereby achieving the purpose of limiting and fixing the connecting rod 8 and the tension sensor 4, and further achieving the effect of quickly installing the tensile detection mechanism 6; by pushing the push plate 17 again and causing the two external threads 9 to disengage from the slots 5, the connecting rod 8 and the two external threads 9 are pulled out of the slots 5 together, thereby achieving the effect of quickly disassembling the tensile detection mechanism 6;

[0035] The assembly and disassembly operations between the viscosity detection mechanism 7 and the tension sensor 4 are the same as above;

[0036] In summary, the effect of rapid replacement between the tensile detection mechanism 6 and the viscosity detection mechanism 7 is achieved.

[0037] Compared with the related art, the strength testing equipment for highly weather-resistant PVC surface protective film provided by the utility model has the following beneficial effects: through the cooperation of various components, the tensile testing mechanism 6 and the viscosity testing mechanism 7 can be quickly disassembled and installed without the use of tools, thereby improving convenience and efficiency, and the structure is simple and the practicality is higher.

[0038] The above are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A strength testing device for high weather-resistant PVC surface protective film, characterized in that: It comprises a base (1), a tension sensor (4), a fixing mechanism, a tensile testing mechanism (6), and a viscosity testing mechanism (7); The base (1) is fixedly connected to a bracket (2), the bracket (2) is provided with a hydraulic cylinder (3), one end of the hydraulic cylinder (3) is fixedly mounted with a tension sensor (4), a bottom of the tension sensor (4) is provided with a slot (5), the tensile detection mechanism (6) and the viscosity detection mechanism are both provided with a fixing mechanism, and the fixing mechanisms are both connected to the slot (5); The fixing mechanism comprises a connecting rod (8), an external thread (9), a gear (10), a rack (11) and a torsion spring (12); the connecting rod (8) is plugged into the clamping slot (5); the tensile testing mechanism (6) and the viscosity testing mechanism (7) are both rotatably connected to the connecting rod (8); both sides of the connecting rod (8) are fixedly connected to external threads (9); and both external threads are clamped to the clamping slot (5).

2. The strength testing equipment for a high-weather-resistant PVC surface protective film according to claim 1, characterized in that: One end of the connecting rod (8) is fixedly sleeved with a gear (10), and the gear (10) is meshedly connected with a rack (11), and the two racks (11) are slidably connected to the tensile detection mechanism (6) and the viscosity detection mechanism (7), respectively. The slot (5) is adapted to the connecting rod (8) and the two external threads (9).

3. The strength testing equipment for a high-weather-resistant PVC surface protective film according to claim 2, characterized in that: One end of the connecting rod (8) is provided with a groove 1, in which a torsion spring (12) is fixedly installed. One end of the two torsion springs (12) is fixedly connected to the tensile detection mechanism (6) and the viscosity detection mechanism (7), respectively.

4. The strength testing equipment for a high-weather-resistant PVC surface protective film according to claim 2, characterized in that: The tensile detection mechanism (6) and the viscosity detection mechanism are both provided with cavities, and the two gears (10) rotate in the two cavities respectively.

5. The strength testing equipment for a high-weather-resistant PVC surface protective film according to claim 3, characterized in that: Bearings (14) are fixedly sleeved on the two connecting rods (8), and the outer walls of the two bearings (14) are fixedly connected to the tensile detection mechanism (6) and the viscosity detection mechanism (7), respectively.

6. The strength testing equipment for a high-weather-resistant PVC surface protective film according to claim 5, characterized in that: A plurality of limit blocks (13) are fixedly connected to the tensile detection mechanism (6) and the viscosity detection mechanism (7), and a plurality of limit slots are provided at the bottom of the tension sensor (4) and are adapted to the plurality of limit blocks (13).

7. The strength testing equipment for a high-weather-resistant PVC surface protective film according to claim 2, characterized in that: One end of the two racks (11) passes through the tensile detection mechanism and the viscosity detection mechanism (7) respectively, and one end of the two racks (11) is fixedly connected to a push plate (17).

8. The strength testing equipment for a highly weather-resistant PVC surface protective film according to claim 1, characterized in that: A movable platform (15) is provided on the base (1), the tensile detection mechanism (6) and the viscosity detection mechanism are arranged on the movable platform (15), a control module (16) is provided on the bracket (2), and the hydraulic cylinder (3) and the tension sensor (4) are both connected to the control module (16).

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