CN220950360U - Plastic film tightening device - Google Patents
Plastic film tightening device Download PDFInfo
- Publication number
- CN220950360U CN220950360U CN202323140329.1U CN202323140329U CN220950360U CN 220950360 U CN220950360 U CN 220950360U CN 202323140329 U CN202323140329 U CN 202323140329U CN 220950360 U CN220950360 U CN 220950360U
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- China
- Prior art keywords
- frame
- plastic film
- clamping plates
- rods
- tightening device
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- 239000002985 plastic film Substances 0.000 title claims abstract description 54
- 229920006255 plastic film Polymers 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 description 6
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Clamps And Clips (AREA)
Abstract
The application provides a plastic film tightening device, comprising: frame, bracing piece and clamping assembly. The frame is a rectangular frame structure which is horizontally arranged, and the two ends of the frame are provided with telescopic devices. The number of the support rods is two, the support rods are vertically arranged between two sides of the frame, and the support rods are arranged along the connecting line between the two ends of the frame. The clamping components are two groups, are respectively arranged between the supporting rods and the end parts of the frame, the clamping components comprise a sliding rod arranged between two side edges of the frame, a pair of clamping plates are hinged to the upper and lower sides of the sliding rod connected with the end parts of the telescopic rods of the telescopic devices, the front ends of the clamping plates face one side of the supporting rods, the edges of the clamping plates are parallel to the supporting rods, when the edges of the two clamping plates are contacted, the distance between the two clamping plates is larger than the outer diameter of the supporting rods, and locking pieces are arranged on the two clamping plates and used for adjusting the opening and closing of the front ends of the two clamping plates. Can effectively prevent the plastic film from being folded, so that the plastic film can still be kept flat after being stretched, and meanwhile, the plastic film can be prevented from falling off.
Description
Technical Field
The utility model belongs to the technical field of plastic film test equipment, and particularly relates to a plastic film tightening device.
Background
Various properties of plastic films, such as load bearing capacity, elongation, impact resistance and puncture resistance, are often required to be tested in new product trial production and in later sampling inspection, while the plastic films are required to be stretched in some test projects. The existing tightening device mostly uses a pair of flat clamps to clamp two ends of a plastic film, and then uses a pulling device to pull the clamps, so that the distance between the clamps is increased, and the plastic film is tightened. However, in the mode, the end part of the plastic film clamped in the clamp can be contracted towards the middle along the width direction in the process of tightening the plastic film, so that the plastic film is finally pulled into a long strip shape, and the width of the plastic film cannot be maintained in the tightening process; in addition, the plastic film falls off from the clamp in the tightening process in the mode, so that the testing effect and efficiency are affected.
Disclosure of utility model
In order to solve the defects in the prior art, the utility model provides the plastic film tightening device which can effectively prevent the plastic film from being folded, so that the plastic film can still be kept flat after being tightened, and meanwhile, the plastic film can be prevented from falling off.
In order to achieve the object of the utility model, the following scheme is adopted:
a plastic film tightening device comprising: frame, bracing piece and clamping assembly.
The frame is a rectangular frame structure which is horizontally arranged, and the two ends of the frame are provided with telescopic devices.
The number of the support rods is two, the support rods are vertically arranged between two sides of the frame, the support rods are in the same horizontal plane, and the support rods are arranged along the connecting line between the two ends of the frame.
The clamping components are two groups, are respectively arranged between the supporting rods and the end parts of the frame, the clamping components comprise a sliding rod vertically arranged between two side edges of the frame, a pair of clamping plates are hinged to the upper and lower sides of the sliding rod connected with the end parts of the telescopic rods of the telescopic devices, the front ends of the clamping plates face one side of the supporting rods, the edges of the clamping plates are parallel to the supporting rods, when the edges of the two clamping plates are contacted, the distance between the two clamping plates is larger than the outer diameter of the supporting rods, and locking pieces are arranged on the two clamping plates and used for adjusting the opening and closing of the front ends of the two clamping plates.
The utility model has the beneficial effects that: the plastic film is clamped and fixed by utilizing the cooperation of the support rod and the clamping assembly, so that the plastic film can be effectively prevented from being folded along the width direction, the plastic film is more smooth after being stretched tightly, and the plastic film can be effectively prevented from falling off from the clamping assembly.
Drawings
The drawings described herein are for illustration of selected embodiments only and not all possible implementations, and are not intended to limit the scope of the utility model.
Fig. 1 shows a schematic overall structure of the present application.
Fig. 2 shows a partial enlarged view at a in fig. 1.
Fig. 3 shows a partial cross-sectional view of the present application.
Fig. 4 shows a schematic structural view of the support rod.
The marks in the figure: the device comprises a frame-1, a T-shaped groove-11, a telescopic device-2, a supporting rod-3, a T-shaped block-31, a spring-32, a sliding rod-41, a guide groove-411, a clamping plate-42, a convex plate-421, a locking piece-43, a disc-431, a guide rod-44 and a nut sleeve-45.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the following detailed description of the embodiments of the present utility model will be given with reference to the accompanying drawings, but the described embodiments of the present utility model are some, but not all embodiments of the present utility model.
As shown in fig. 1 and 3, a plastic film tightening device includes: frame 1, bracing piece 3 and clamping assembly.
The frame 1 is a rectangular frame structure which is horizontally arranged, and two ends of the frame are provided with telescopic devices 2.
The number of the supporting rods 3 is two, and the two supporting rods 3 are vertically arranged between the two side edges of the frame 1, so that the two supporting rods 3 are mutually parallel, the supporting rods 3 are positioned on the same horizontal plane, and the supporting rods 3 are movably arranged along a connecting line between the two ends of the frame 1.
The clamping components are two groups, are respectively arranged between the supporting rod 3 and the end part of the frame 1, and comprise a sliding rod 41 vertically arranged between two side edges of the frame 1, the sliding rod 41 is connected with the end part of a telescopic rod of the telescopic device 2, the sliding rod 41 moves along a connecting line between the two ends of the frame 1 under the driving action of the telescopic device 2, a pair of clamping plates 42 are hinged to the upper side and the lower side of the sliding rod 41, the front ends of the clamping plates 42 are provided with protruding plates 421 towards one side of the supporting rod 3, the edges of the protruding plates 421 are parallel to the supporting rod 3, when the edges of the two protruding plates 421 are contacted, the distance between the two clamping plates 42 is larger than the outer diameter of the supporting rod 3, and locking pieces 43 are arranged on the two clamping plates 42 and used for adjusting the opening and closing of the front ends of the two clamping plates 42.
When the plastic film stretching machine is used, a plastic film is flatly wound on two support rods 3, the telescopic device 2 is started to move the clamping assembly to the corresponding support rods 3, the front ends of the clamping plates 42 are opened, namely, convex plates 421 at the front ends of the two clamping plates 42 of the same group of clamping assemblies are respectively positioned above and below the support rods 3, so that the support rods 3 are clamped between the two clamping plates 42, then the locking pieces 43 are utilized to adjust the opening and closing of the two clamping plates 42, the convex plates 421 are utilized to compress the plastic film, so that the plastic film on the upper side and the lower side of the support rods 3 are tightly attached, the support rods 3 are accommodated between the two clamping plates 42, then the telescopic device 2 is utilized to pull the clamping assemblies to the two ends of the frame 1, so that the plastic film is stretched, the plastic film is compressed by the convex plates 421 in the stretching process, and the plastic film can drive the support rods 3 to be compressed to the inner walls of the convex plates in the process of pulling the clamping assemblies, so that the plastic film is further compressed by increasing the compressing force on the plastic film 421, and the plastic film is prevented from being compressed towards the middle along the width direction; meanwhile, the supporting rods 3 are arranged, so that the contact surface between the plastic film and the supporting rods is increased, friction force is increased, and the plastic film is further prevented from being gathered towards the middle along the width direction; and the end of the plastic film is fixed inside the clamping plate 42 by the support rod 3, so that the plastic film can be effectively prevented from falling off.
Preferably, as shown in fig. 1, 3 and 4, the two sides of the frame 1 are provided with T-shaped grooves 11, the two ends of the supporting rod 3 are provided with T-shaped blocks 31, and the T-shaped blocks 31 are slidably arranged in the T-shaped grooves 11, so that the sliding connection of the supporting rod 3 can be realized, and the supporting rod 3 can be prevented from rotating around the axis.
Preferably, as shown in fig. 3 and 4, springs 32 are arranged between the T-shaped blocks 31 and the ends of the frame 1, when the springs 32 are in a natural state, the support rods 3 are positioned in the middle of the frame 1, and a predetermined distance is reserved between the two support rods 3, wherein the middle does not mean that the support rods 3 are positioned in the middle of the frame 1, and the design aims to facilitate winding of plastic films and prevent the support rods 3 from moving randomly; the plastic film may be wound with a pretension force by the spring 32 to bring the plastic film into an expanded state.
It is further preferred that the spring 32 is located within the T-shaped slot 11 to provide a cleaner overall appearance of the device, preventing the spring 32 from being involved with the plastic film.
Preferably, the outer wall of the support rod 3 is provided with a rubber layer to increase friction force, further preventing the plastic film from being gathered toward the middle in the width direction.
Preferably, as shown in fig. 1, the sliding rods 41 are each provided with at least one pair of guide rods 44, and the guide rods 44 penetrate through two ends of the frame 1 to improve the movement stability of the clamping assembly.
Preferably, as shown in fig. 1 to 3, the locking member 43 is in a screw structure, two sections of threads with opposite rotation directions are provided at two ends of the locking member 43, the locking member 43 is vertically arranged on the sliding rod 41, the locking member 43 is movably arranged along the direction of the connecting line of two ends of the frame 1, the rear ends of the clamping plates 42 are hinged with nut sleeves 45, the hinged axes are parallel to the supporting rods 3, two ends of the locking member 43 are respectively connected with the nut sleeves 45 of the two clamping plates 42, and when the angle of the clamping plates 42 is adjusted, the two clamping plates 42 can swing simultaneously by only rotating the locking member 43, so as to realize the control of opening and closing the clamping plates 42, and in the adjusting process, the locking member 43 is adapted to the displacement generated by the swinging of the clamping plates 42 in a mode of moving along the connecting line direction of two ends of the frame 1.
Preferably, as shown in fig. 2, the middle section of the locking member 43 is coaxially provided with a disc 431, the sliding rod 41 is provided with a pair of guide slots 411 along the moving direction of the locking member 43, the guide slots 411 are located at two sides of the locking member 43, and the disc 431 is arranged in the guide slots 411, so as to prevent the locking member 43 from moving along the axis, and simultaneously meet the requirements of rotation and moving along the connecting line direction of two ends of the frame 1.
The foregoing description of the preferred embodiments of the utility model is merely exemplary and is not intended to be exhaustive or limiting of the utility model. It will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model.
Claims (8)
1. A plastic film tightening device, comprising:
The frame (1) is of a rectangular frame structure which is horizontally arranged, and two ends of the frame are provided with telescopic devices (2);
The number of the support rods (3) is two, the two support rods are vertically arranged between two side edges of the frame (1), the support rods (3) are positioned on the same horizontal plane, and the support rods (3) are movably arranged along a connecting line between two ends of the frame (1);
The clamping components are two groups, are respectively arranged between the supporting rods (3) and the end parts of the frame (1), the clamping components comprise a sliding rod (41) which is vertically arranged between the two side edges of the frame (1), a pair of clamping plates (42) are hinged to the upper and lower sides of the sliding rod (41) connected with the end parts of the telescopic rods of the telescopic devices (2), the front ends of the clamping plates (42) are provided with convex plates (421) towards one side of the supporting rods (3), the edges of the convex plates (421) are parallel to the supporting rods (3), when the edges of the two convex plates (421) are contacted, the distance between the two clamping plates (42) is larger than the outer diameter of the supporting rods (3), and locking pieces (43) are arranged on the two clamping plates (42) and used for adjusting the opening and closing of the front ends of the two clamping plates (42).
2. The plastic film tightening device according to claim 1, wherein the T-shaped grooves (11) are formed in two side edges of the frame (1), the T-shaped blocks (31) are arranged at two ends of the supporting rod (3), and the T-shaped blocks (31) are slidably arranged in the T-shaped grooves (11).
3. The plastic film tightening device according to claim 2, wherein springs (32) are arranged between the T-shaped blocks (31) and the end parts of the frame (1), the support rods (3) are positioned in the middle of the frame (1) when the springs (32) are in a natural state, and a preset distance is reserved between the two support rods (3).
4. A plastic film tightening device according to claim 3, characterized in that the spring (32) is located in the T-shaped groove (11).
5. A plastic film tightening device according to claim 1, characterized in that the outer wall of the support bar (3) is provided with a rubber layer.
6. A plastic film tightening device according to claim 1, characterized in that the slide bars (41) are each provided with at least one pair of guide rods (44), the guide rods (44) being arranged to pass through the two ends of the frame (1).
7. The plastic film tightening device according to claim 1, wherein the locking member (43) is of a screw structure, two sections of threads with opposite rotation directions are arranged at two ends of the locking member (43), the locking member (43) is vertically arranged on the sliding rod (41), the locking member (43) is movably arranged along the connecting line direction of two ends of the frame (1), the rear ends of the clamping plates (42) are hinged with nut sleeves (45), the hinged axes are parallel to the supporting rods (3), and two ends of the locking member (43) are respectively connected with the nut sleeves (45) of the two clamping plates (42).
8. The plastic film tightening device according to claim 7, wherein the middle section of the locking member (43) is coaxially provided with a disc (431), the slide bar (41) is provided with a pair of guide grooves (411) along the moving direction of the locking member (43), the guide grooves (411) are located at both sides of the locking member (43), and the disc (431) is located in the guide grooves (411).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323140329.1U CN220950360U (en) | 2023-11-21 | 2023-11-21 | Plastic film tightening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323140329.1U CN220950360U (en) | 2023-11-21 | 2023-11-21 | Plastic film tightening device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220950360U true CN220950360U (en) | 2024-05-14 |
Family
ID=91019461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323140329.1U Active CN220950360U (en) | 2023-11-21 | 2023-11-21 | Plastic film tightening device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220950360U (en) |
-
2023
- 2023-11-21 CN CN202323140329.1U patent/CN220950360U/en active Active
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