Thermal stretching mechanism for plastic film
By setting rubber pads and rectangular plate structures in the plastic film thermal stretching mechanism to increase friction, and combining the use of electric telescopic rods and cylinders, the problem of inaccurate testing caused by fixture sliding was solved, and the accuracy of tensile test data and protection of equipment were achieved.
Patent Information
- Application Number
- CN202422839508.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-11-21
AI Technical Summary
In the prior art, when performing a tensile test on a plastic film, the clamp is prone to slipping against the plastic film, resulting in inaccurate test data.
A plastic film thermal stretching mechanism is adopted. By setting rubber pads and rectangular plate structures on the splint, the friction between the splint and the plastic film is increased. The electric telescopic rod and cylinder are used to fix and stretch the plastic film, and the pulling range of the cylinder is limited by an auxiliary device to avoid collision.
It effectively avoids sliding between the splint and the plastic film, ensures the accuracy of the tensile test data, and protects the equipment from collision damage.
Smart Images
Figure CN223420082U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of plastic film stretching, in particular to a plastic film thermal stretching mechanism. Background Art
[0002] Plastic film is a film made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins, used for packaging and as a coating layer. Plastic packaging and plastic packaging products occupy an increasingly large share in the market, so the detection of plastic film is particularly important.
[0003] In the prior art, when performing a tensile test on a plastic film, one end of the plastic film needs to be fixed by a clamp. However, the clamp is prone to slipping against the plastic film, resulting in inaccurate tensile test data of the plastic film. Utility Model Content
[0004] The utility model provides a plastic film thermal stretching mechanism for solving the shortcomings in the prior art.
[0005] The top of the U-shaped frame is fixedly connected to the upper surface of the workbench, and the upper surface of the U-shaped frame is fixedly connected to the cylinder. Two support plates are provided inside the U-shaped frame, one of which is fixedly connected to the output end of the cylinder, and the other support plate is fixedly connected to the upper surface of the workbench. Both sides of the support plate are fixedly connected to an electric telescopic rod, and one end of the electric telescopic rod is fixedly connected to a plywood. One side of the plywood is provided with a fixing device, and the fixing device includes a rubber pad, which is arranged on one side of the plywood, and the rubber pad is fixedly connected to two mutually symmetrical rectangular plates near the side of the plywood corresponding to the rectangular plate. A rectangular groove is opened at the position where the plywood corresponds to the rectangular plate, and two mutually symmetrical pads are fixedly connected to one side of the plywood, and a spring is fixedly connected to one side of the pad, and one end of the spring is fixedly connected to a trapezoidal plate, and a groove is opened at the position where the rectangular plate corresponds to the trapezoidal plate, and the size of the groove is adapted to the size of the trapezoidal plate.
[0006] The effect achieved by the above-mentioned components is that before the workbench needs to be used, the worker first moves the rubber pad, inserts the rubber pad into the rectangular slot of the clamping plate with the rectangular plate, one end of the rectangular plate extrudes the inclined surface of the trapezoidal plate, the trapezoidal plate moves towards the base plate, the spring is contracted, when the groove on the rectangular plate moves to the position of the trapezoidal plate, the trapezoidal plate is inserted into the groove of the rectangular plate under the action of the spring restoring force, the effect of fixing the rubber pad is achieved, at this time the worker moves the two ends of the plastic film to the positions of the two supporting plates respectively, the electric telescopic rod brings the two clamping plates close to each other, the clamping plate extrudes the plastic film with the help of the rubber pad, the clamping plates on the two supporting plates achieve the effect of fixing the two ends of the plastic film, then the worker opens the air cylinder, the air cylinder brings one of the supporting plates away from the other supporting plate, the plastic film is stretched, the display displays the stretched value, the rubber pad installed through the fixing device increases the friction between the clamping plate and the plastic film, avoiding the sliding between the clamping plate and the plastic film, so as to avoid the inaccuracy of the stretching test data.
[0007] Preferably, one end of the rectangular plate is fixedly connected with a sharp protrusion, and the tip of the sharp protrusion is away from the rectangular plate.
[0008] The effect achieved by the above-mentioned components is that the sharp protrusion is arranged to facilitate the worker to insert the rectangular plate into the rectangular slot of the clamping plate, which brings convenience to the worker.
[0009] Preferably, both ends of the trapezoidal plate are slidingly connected with limiting pieces, and the two limiting pieces are fixedly connected with the clamping plate.
[0010] The effect achieved by the above-mentioned components is that the limiting pieces are arranged to limit the moving direction of the trapezoidal plate, avoiding the rotation of the trapezoidal plate.
[0011] Preferably, one side of the rubber pad is fixedly connected with a plurality of positioning rods, the clamping plate is provided with positioning holes corresponding to the positioning rods, and the positioning rods and the positioning holes are matched in size.
[0012] The effect achieved by the above-mentioned components is that the positioning rods of the rubber pad are inserted into the positioning holes of the clamping plate, achieving the effect of limiting the middle part of the rubber pad, avoiding the loosening of the middle part of the rubber pad.
[0013] Preferably, the inside of the U-shaped frame is provided with an auxiliary device, the auxiliary device comprises a threaded cylinder, the threaded cylinder is fixedly connected in the inside of the U-shaped frame, and a screw rod is threadedly connected in the inside of the threaded cylinder.
[0014] The effect achieved by the above components is: before the cylinder needs to be used, the staff first rotates the screw, and the screw rotates inside the threaded barrel, and the total length of the screw and the threaded barrel changes. When the total length of the screw and the threaded barrel is adjusted to the appropriate size, the staff stops rotating the screw. In the process of the cylinder pulling the support plate to pull the plastic film, one end of the screw limits the support plate to prevent the cylinder from pulling too much, which may cause the support plate to collide with the U-shaped frame. The auxiliary device achieves the effect of limiting the support plate, avoiding the cylinder from pulling too much, which may cause the support plate to collide with the U-shaped frame, thereby achieving the effect of protecting the support plate.
[0015] Preferably, one end of the screw is fixedly connected to a control block, and the surface of the control block is provided with anti-slip grooves.
[0016] The effect achieved by the above components is that the control block is provided to facilitate the staff to rotate the screw, thereby bringing convenience to the staff.
[0017] Preferably, a protection pad is fixedly connected to one side of the control block, and the size of the protection pad is adapted to the size of the control block.
[0018] The effect achieved by the above components is: by providing the protective pad, the support plate is protected to avoid collision between the control block and the support plate, thereby preventing damage to the support plate.
[0019] Preferably, a scale is fixedly connected to one side of the U-shaped frame.
[0020] The effect achieved by the above components is: by setting a scale, it is convenient for staff to judge the position of one end of the screw.
[0021] In summary, the beneficial effects of the present invention are as follows:
[0022] Before the workbench needs to be used, the staff first moves the rubber pad, and the rubber pad carries the rectangular plate into the rectangular groove of the plywood. One end of the rectangular plate squeezes the inclined surface of the trapezoidal plate, and the trapezoidal plate moves toward the pad, and the spring contracts. When the groove on the rectangular plate moves to the position of the trapezoidal plate, under the action of the spring return force, the trapezoidal plate is inserted into the groove of the rectangular plate, thereby fixing the rubber pad. At this time, the staff moves the two ends of the plastic film to the positions of the two support plates respectively, and the electric telescopic rod brings the two plywood closer to each other. The plywood squeezes the plastic film with the help of the rubber pad, and the plywood on the two support plates achieves the effect of fixing the two ends of the plastic film. After that, the staff turns on the cylinder, and the cylinder moves one of the support plates away from the other support plate. The plastic film is stretched, and the display shows the stretching value. The rubber pad installed by the fixing device increases the friction between the plywood and the plastic film to avoid sliding between the plywood and the plastic film, which leads to inaccurate tensile test data. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the splint of the utility model;
[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of the fixing device of the utility model;
[0026] Figure 4 For this utility model Figure 3 A magnified view of point A;
[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the auxiliary device of the utility model.
[0028] Legend: 1. Workbench; 2. U-shaped frame; 3. Display; 4. Cylinder; 5. Support plate; 6. Electric telescopic rod; 7. Clamp; 8. Fixing device; 81. Rubber pad; 82. Rectangular plate; 83. Rectangular groove; 84. Pad; 85. Spring; 86. Trapezoidal plate; 87. Groove; 88. Protrusion; 89. Limiting piece; 810. Positioning rod; 811. Positioning hole; 9. Auxiliary device; 91. Threaded barrel; 92. Screw; 93. Control block; 94. Protective pad; 95. Ruler. DETAILED DESCRIPTION
[0029] Reference Figures 1-5As shown, this embodiment discloses a plastic film thermal stretching mechanism, including a workbench 1, the upper surface of the workbench 1 is fixedly connected to a U-shaped frame 2, the upper surface of the workbench 1 is fixedly connected to a display 3, the upper surface of the U-shaped frame 2 is fixedly connected to a cylinder 4, and two support plates 5 are provided inside the U-shaped frame 2, one of the support plates 5 is fixedly connected to the output end of the cylinder 4, and the other support plate 5 is fixedly connected to the upper surface of the workbench 1, both sides of the support plate 5 are fixedly connected to an electric telescopic rod 6, one end of the electric telescopic rod 6 is fixedly connected to a splint 7, a fixing device 8 is provided on one side of the splint 7, and an auxiliary device 9 is provided inside the U-shaped frame 2.
[0030] Reference Figures 1-5 As shown, the fixing device 8 includes a rubber pad 81, which is arranged on one side of the splint 7. The rubber pad 81 is fixedly connected to two mutually symmetrical rectangular plates 82 on one side close to the splint 7. A rectangular groove 83 is provided at the splint 7 corresponding to the rectangular plate 82. Two mutually symmetrical pads 84 are fixedly connected to one side of the splint 7. A spring 85 is fixedly connected to one side of the pad 84. One end of the spring 85 is fixedly connected to a trapezoidal plate 86. A groove 87 is provided at the rectangular plate 82 corresponding to the trapezoidal plate 86. The size of the groove 87 is adapted to the size of the trapezoidal plate 86. Before the workbench 1 needs to be used, the staff first moves the rubber pad 81, and the rubber pad 81 is inserted into the rectangular groove 83 of the clamping plate 7 with the rectangular plate 82. One end of the rectangular plate 82 squeezes the inclined surface of the trapezoidal plate 86, and the trapezoidal plate 86 moves toward the pad 84. The spring 85 contracts. When the groove 87 on the rectangular plate 82 moves to the position of the trapezoidal plate 86, under the action of the spring 85 reset elastic force, the trapezoidal plate 86 is inserted into the groove 87 of the rectangular plate 82, achieving the effect of fixing the rubber pad 81. At this time, the staff moves the two ends of the plastic film to The two support plates 5 are positioned, and the electric telescopic rod 6 brings the two splints 7 closer to each other. The splints 7 squeeze the plastic film with the help of the rubber pads 81. The splints 7 on the two support plates 5 achieve the effect of fixing the two ends of the plastic film. Then the staff turns on the cylinder 4, and the cylinder 4 moves one of the support plates 5 away from the other support plate 5. The plastic film is stretched, and the display 3 displays the stretching value. The rubber pads 81 installed by the fixing device 8 increase the friction between the splint 7 and the plastic film to avoid sliding between the splint 7 and the plastic film, which may lead to inaccurate tensile test data.
[0031] Reference Figures 1-5As shown, one end of the rectangular plate 82 is fixedly connected with a pointed protrusion 88, and the tip of the pointed protrusion 88 is away from the rectangular plate 82. By providing the pointed protrusion 88, it is convenient for the staff to insert the rectangular plate 82 into the rectangular groove 83 of the splint 7, which brings convenience to the staff. Both ends of the trapezoidal plate 86 are slidably connected to the limiting members 89, and the two limiting members 89 are fixedly connected to the splint 7. By providing the limiting members 89, the effect of limiting the moving direction of the trapezoidal plate 86 is achieved, thereby preventing the trapezoidal plate 86 from rotating. Several positioning rods 810 are fixedly connected to one side of the rubber pad 81, and positioning holes 811 are provided at the splint 7 corresponding to the positioning rods 810. The sizes of the positioning rods 810 and the positioning holes 811 are adapted to each other. By inserting the positioning rods 810 of the rubber pad 81 into the positioning holes 811 of the splint 7, the effect of limiting the middle part of the rubber pad 81 is achieved, thereby preventing the middle part of the rubber pad 81 from loosening.
[0032] Reference Figures 1-5 As shown, the auxiliary device 9 includes a threaded barrel 91, which is fixedly connected to the inside of the U-shaped frame 2, and a screw 92 is connected to the inner thread of the threaded barrel 91. Before the cylinder 4 needs to be used, the staff first rotates the screw 92, and the screw 92 rotates inside the threaded barrel 91, and the total length of the screw 92 and the threaded barrel 91 changes. When the total length of the screw 92 and the threaded barrel 91 is adjusted to an appropriate size, the staff stops rotating the screw 92. In the process of the cylinder 4 pulling the support plate 5 to pull the plastic film, one end of the screw 92 limits the support plate 5 to prevent the cylinder 4 from pulling too much, thereby causing the support plate 5 to collide with the U-shaped frame 2. The auxiliary device 9 achieves the effect of limiting the support plate 5, preventing the cylinder 4 from pulling too much, thereby causing the support plate 5 to collide with the U-shaped frame 2, and achieving the effect of protecting the support plate 5.
[0033] Reference Figures 1-5 As shown, one end of the screw 92 is fixedly connected to a control block 93, and the surface of the control block 93 is provided with anti-slip grooves. The provision of the control block 93 makes it easier for the staff to rotate the screw 92, bringing convenience to the staff. A protective pad 94 is fixedly connected to one side of the control block 93, and the size of the protective pad 94 is adapted to the size of the control block 93. The provision of the protective pad 94 achieves the effect of protecting the support plate 5, preventing the control block 93 from colliding with the support plate 5, thereby preventing the support plate 5 from being damaged. A scale 95 is fixedly connected to one side of the U-shaped frame 2. The provision of the scale 95 makes it easier for the staff to judge the position of one end of the screw 92.
[0034] Working principle: Before the workbench 1 needs to be used, the staff first moves the rubber pad 81, and the rubber pad 81 carries the rectangular plate 82 with the help of the pointed protrusion 88 and is inserted into the rectangular groove 83 of the clamping plate 7. At this time, the positioning rod 810 of the rubber pad 81 is inserted into the positioning hole 811 of the clamping plate 7, achieving the effect of limiting the middle part of the rubber pad 81 to prevent the middle part of the rubber pad 81 from loosening. One end of the rectangular plate 82 squeezes the inclined surface of the trapezoidal plate 86, and the trapezoidal plate 86 moves toward the pad 84, and the spring 85 contracts. When the groove 87 on the rectangular plate 82 moves to the position of the trapezoidal plate 86, under the action of the restoring elastic force of the spring 85, the trapezoidal plate 86 is inserted into the groove 87 of the rectangular plate 82. 7, the effect of fixing the rubber pad 81 is achieved. At this time, the staff moves the two ends of the plastic film to the positions of the two support plates 5 respectively. The electric telescopic rod 6 brings the two splints 7 closer to each other. The splints 7 squeeze the plastic film with the help of the rubber pad 81. The splints 7 on the two support plates 5 achieve the effect of fixing the two ends of the plastic film. Then the staff turns on the cylinder 4, and the cylinder 4 moves one of the support plates 5 away from the other support plate 5. The plastic film is stretched, and the display 3 displays the stretching value. The rubber pad 81 installed by the fixing device 8 increases the friction between the splint 7 and the plastic film to avoid sliding between the splint 7 and the plastic film, which leads to inaccurate tensile test data.
[0035] Before the cylinder 4 needs to be used, the staff first rotates the screw 92 through the control block 93. The screw 92 rotates inside the threaded barrel 91, and the total length of the screw 92 and the threaded barrel 91 changes. When the total length of the screw 92 and the threaded barrel 91 is adjusted to an appropriate size, the staff stops rotating the control block 93. In the process of the cylinder 4 pulling the support plate 5 to pull the plastic film, one end of the screw 92 limits the support plate 5 to prevent the cylinder 4 from pulling too much, which may cause the support plate 5 to collide with the U-shaped frame 2. The auxiliary device 9 achieves the effect of limiting the support plate 5 to prevent the cylinder 4 from pulling too much, which may cause the support plate 5 to collide with the U-shaped frame 2, thereby achieving the effect of protecting the support plate 5.
Claims
1. A plastic film thermal stretching mechanism, comprising a workbench (1), characterized in that: The upper surface of the workbench (1) is fixedly connected to a U-shaped frame (2), the upper surface of the workbench (1) is fixedly connected to a display (3), the upper surface of the U-shaped frame (2) is fixedly connected to a cylinder (4), two support plates (5) are provided inside the U-shaped frame (2), one of the support plates (5) is fixedly connected to the output end of the cylinder (4), and the other support plate (5) is fixedly connected to the upper surface of the workbench (1), both sides of the support plates (5) are fixedly connected to electric telescopic rods (6), one end of the electric telescopic rod (6) is fixedly connected to a clamping plate (7), one side of the clamping plate (7) is provided with a fixing device (8), and the fixing device (8) includes a rubber A rubber pad (81) is provided on one side of the splint (7), and the rubber pad (81) is fixedly connected to two mutually symmetrical rectangular plates (82) on one side of the splint (7), and a rectangular groove (83) is provided on the splint (7) corresponding to the rectangular plate (82). Two mutually symmetrical pads (84) are fixedly connected to one side of the splint (7), and a spring (85) is fixedly connected to one side of the pad (84), and one end of the spring (85) is fixedly connected to a trapezoidal plate (86). A groove (87) is provided on the rectangular plate (82) corresponding to the trapezoidal plate (86), and the size of the groove (87) is adapted to the size of the trapezoidal plate (86).
2. A plastic film thermal stretching mechanism according to claim 1, characterized in that: One end of the rectangular plate (82) is fixedly connected to a pointed protrusion (88), and the tip of the pointed protrusion (88) is away from the rectangular plate (82).
3. The plastic film thermal stretching mechanism according to claim 1, characterized in that: Both ends of the trapezoidal plate (86) are slidably connected to the limiting members (89), and the two limiting members (89) are fixedly connected to the clamping plate (7).
4. The plastic film thermal stretching mechanism according to claim 1, characterized in that: A plurality of positioning rods (810) are fixedly connected to one side of the rubber pad (81), and positioning holes (811) are provided on the clamping plate (7) corresponding to the positioning rods (810), and the sizes of the positioning rods (810) and the positioning holes (811) are adapted to each other.
5. The plastic film thermal stretching mechanism according to claim 1, characterized in that: An auxiliary device (9) is provided inside the U-shaped frame (2). The auxiliary device (9) comprises a threaded barrel (91). The threaded barrel (91) is fixedly connected to the inside of the U-shaped frame (2). The internal thread of the threaded barrel (91) is connected to a screw rod (92).
6. A plastic film thermal stretching mechanism according to claim 5, characterized in that: One end of the screw rod (92) is fixedly connected to a control block (93), and the surface of the control block (93) is provided with anti-slip grooves.
7. A plastic film thermal stretching mechanism according to claim 6, characterized in that: A protection pad (94) is fixedly connected to one side of the control block (93), and the size of the protection pad (94) is adapted to the size of the control block (93).
8. The plastic film thermal stretching mechanism according to claim 5, characterized in that: A scale (95) is fixedly connected to one side of the U-shaped frame (2).