A tensile strength detection device for preparing a heat shrinkable film
By introducing a combined clamping structure of arc groove and electric telescopic rod into the heat shrink film stretching test device, the problem of easy detachment of the clamping plate is solved, and stable clamping of the heat shrink film and accuracy of test data are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUELONG FILM CO LTD FOSHAN CHINA
- Filing Date
- 2025-08-25
- Publication Date
- 2026-07-21
AI Technical Summary
In the existing technology, the clamping plate lacks a locking structure during the heat shrink film stretching test, which makes it easy for the clamping plate to detach from the heat shrink film, affecting the accuracy of the test results.
The system employs a horizontal frame with tensioning and positioning components. The pressure plate is moved by an arc groove and an electric telescopic rod to form a circular locking clamp. The frictional engagement of the right-angle frame plate and the elastic toothed plate ensures stable clamping of the heat shrink film.
This ensures the accuracy and convenience of heat shrink film stretch testing data, prevents the heat shrink film from falling off during the testing process, and improves the stability and reliability of the testing.
Smart Images
Figure CN224535606U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of thin film testing technology, specifically to a tensile strength testing device for heat shrink film preparation. Background Technology
[0002] Tensile strength testing for heat shrink film preparation refers to the process of cutting a sample of specified size according to relevant standards after the heat shrink film is prepared, clamping both ends of the sample on a special fixture of a tensile testing machine, applying a tensile force to the sample at a constant tensile speed until the sample breaks, recording the maximum tensile force value that the sample can withstand during this process, and calculating the tensile strength of the heat shrink film by combining it with the original cross-sectional area of the sample. This assesses the heat shrink film's ability to resist breakage when subjected to external tensile force, ensuring that it meets the mechanical performance requirements of actual use scenarios.
[0003] When testing heat shrink film using a tensile clamping device, a clamping plate is typically required to hold the film. However, the clamping plates currently used have a significant drawback: they lack a locking structure. This makes it extremely easy for the clamping plate to detach from the heat shrink film during the tensile testing process, thus adversely affecting the accuracy of the test results. Utility Model Content
[0004] To achieve the above objectives, the technical solution adopted in this application is as follows: a tensile strength testing device for heat shrink film preparation, comprising a horizontal frame, a tensile component provided on one side of the inner wall of the horizontal frame, and a positioning component provided on the other side of the inner wall of the horizontal frame. The tensile component includes transverse grooves formed on both sides of the horizontal frame, pulleys movably connected to the inner wall of the transverse grooves, and hinge plates movably connected to the middle of the two pulleys. Pressure plates are fixedly connected to both ends of the hinge plates away from the shaft, and sliding rods are fixedly connected to both ends of the pressure plates. A semi-circular plate is fixedly connected to the end of the sliding rod away from the pressure plate, and two semi-circular plates on the same side are spliced together to form a circle.
[0005] In a further preferred embodiment, two arc-shaped grooves are symmetrically and evenly distributed at one end of the transverse groove, and the inner wall of the arc-shaped groove is movably connected to the outer wall of the slide rod.
[0006] In a further preferred embodiment, a positioning frame is fixedly connected to the end of the two pulleys away from the hinge plate, and the positioning frame is movably connected to the transverse groove.
[0007] In a further preferred embodiment, the positioning frame is fixedly connected to a limiting plate at the end away from the pulley, and both limiting plates are located on both sides of the horizontal frame.
[0008] In a further preferred embodiment, an electric telescopic rod is fixedly connected to one side of the positioning frame, and a through hole is provided in the middle of one side of the horizontal frame, with the outer wall of the electric telescopic rod being fixedly connected to the inner wall of the through hole.
[0009] In a further preferred embodiment, the other end of the electric telescopic rod is fixedly connected to a positioning frame, which is fixedly installed on one side of the horizontal frame.
[0010] Further preferably, the positioning component includes a side frame fixedly installed at the end of the horizontal frame away from the hinge plate, a pivot is provided on the upper part of the inner wall of the side frame, a right-angle bracket is movably connected to the middle of the pivot, an upper arc plate is fixedly connected to the lower part of the right-angle bracket, an elastic shaft frame is provided on the lower part of the inner side wall of the side frame, and an arc plate is provided in the middle of the elastic shaft frame.
[0011] In a further preferred embodiment, an elastic toothed plate is movably connected to one end of the right-angle frame near the side frame, and the elastic toothed plate is fixedly installed on the upper part of the side frame.
[0012] In a further preferred embodiment, the upper arc plate and the arc-shaped plate are movably connected, and both are located on the inner wall of the side frame.
[0013] In a further preferred embodiment, two auxiliary frame plates are symmetrically and evenly distributed and fixedly connected below the horizontal frame. An inclined plate is fixedly connected to the side of each auxiliary frame plate, and the other end of the inclined plate is fixedly installed at the bottom of the horizontal frame.
[0014] Compared with the prior art, the beneficial effects of this application are as follows:
[0015] (1) During the tensile testing process, two arc-shaped grooves symmetrically distributed at one end of the transverse groove guide the movement of two pressure plates and control the angle between the two pressure plates with the hinge plate. Driven by the electric telescopic rod, the heat shrink film is clamped. The sliding rods on both sides of the pressure plate enter the transverse grooves on both sides of the horizontal frame, and the semi-circular plates on one side of the sliding rod are spliced together to form a circle to lock the heat shrink film clamping. Thus, the heat shrink film can be clamped and guided into the single groove to lock the heat shrink film clamping process, thereby ensuring the accuracy of the heat shrink film tensile test data.
[0016] (2) The upper arc plate is rotated by a right-angle bracket to control the gap distance of the arc plate. The position of the right-angle bracket is limited by an elastic toothed plate to quickly clamp the heat shrink film. During the heat shrink film stretching test, the upper arc plate and the arc plate are arranged in a funnel shape. Due to the friction, the gap between the upper arc plate and the arc plate is pulled and reduced. This allows the heat shrink film to be clamped by reverse friction during the stretching test, resulting in the heat shrink film being clamped tighter and tighter to prevent it from falling off. This allows for flexible switching between the quick clamping structure and the anti-fall-off structure, improving the convenience of the heat shrink film stretching test. Attached Figure Description
[0017] Figure 1This invention provides a three-dimensional structural diagram of a tensile strength testing device for heat shrink film preparation. Figure 1 ;
[0018] Figure 2 This invention provides a three-dimensional structural schematic diagram of a tensile strength testing device for heat shrink film preparation. Figure 2 ;
[0019] Figure 3 This is a schematic diagram of the tensile component in a tensile strength testing device for heat shrink film preparation proposed in this utility model;
[0020] Figure 4 This is a partial structural schematic diagram of a tensile strength testing device for heat shrink film preparation proposed in this utility model;
[0021] Figure 5 This is an exploded structural diagram of a tensile strength testing device for heat shrink film preparation proposed in this utility model;
[0022] Figure 6 This is a half-sectional schematic diagram of a tensile strength testing device for heat shrink film preparation proposed in this utility model.
[0023] In the diagram: 1. Horizontal frame; 2. Tension assembly; 201. Horizontal groove; 202. Arc groove; 203. Limiting plate; 204. Positioning frame; 205. Electric telescopic rod; 206. Pulley; 207. Hinge plate; 208. Pressure plate; 209. Slide rod; 210. Semicircular plate; 3. Positioning assembly; 301. Rotating shaft; 302. Elastic shaft frame; 303. Arc plate; 304. Upper arc plate; 305. Right-angle frame plate; 306. Elastic toothed plate; 307. Side frame; 4. Auxiliary frame plate; 5. Inclined plate; 6. Positioning frame; 7. Through hole. Detailed Implementation
[0024] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0025] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.
[0026] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.
[0027] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.
[0028] The existing technology has the following defects: the clamps currently used have obvious defects, namely, the lack of a locking structure, which makes it very easy for the clamp structure to detach from the heat shrink film during the heat shrink film stretching test, thus adversely affecting the accuracy of the heat shrink film stretching test results.
[0029] As an improvement, such as Figure 1 - Figure 6 As shown, the preferred embodiment of this application is as follows:
[0030] A tensile strength testing device for heat shrink film preparation includes a horizontal frame 1. A tensile component 2 is provided on one side of the inner wall of the horizontal frame 1, and a positioning component 3 is provided on the other side of the inner wall of the horizontal frame 1. The tensile component 2 includes transverse grooves 201 formed on both sides of the horizontal frame 1. Pulleys 206 are movably connected to the inner wall of the transverse grooves 201. A hinge plate 207 is movably connected to the middle of the two pulleys 206. Pressure plates 208 are fixedly connected to both ends of the hinge plate 207 away from the shaft. Slide rods 209 are fixedly connected to both ends of the pressure plates 208. A semi-circular plate 210 is fixedly connected to the end of the slide rod 209 away from the pressure plate 208. Two semi-circular plates 210 on the same side are spliced together to form a circle. The electric telescopic rod 205 drives the positioning frame 204 to extend, pushing the positioning frame 204 to move along the transverse grooves 201 towards the two arc-shaped grooves 202, so that the hinge plate 207 connected to the positioning frame 204 can move along the transverse grooves 201 towards the two arc-shaped grooves 202. The pressure plate 208 is driven, and the sliding rods 209 on both sides of the pressure plate 208 enter the corresponding arc-shaped grooves 202, causing the two pressure plates 208 to unfold with the hinge plate 207 as the hinge structure. At this time, the heat shrink film to be tested is placed between the two pressure plates 208. After completion, the electric telescopic rod 205 is activated to retract, driving the positioning frame 204 to move into the horizontal groove 201. The sliding rods 209 on both sides of the pressure plate 208 move along the arc-shaped grooves 202 and merge with the hinge plate 207 to squeeze the heat shrink film. After the other end of the heat shrink film is clamped, the electric telescopic rod 205 continues to pull, and the two sliding rods 209 enter the horizontal grooves 201 on both sides of the horizontal frame 1. The semi-circular plates 210 on one side of the sliding rods 209 are spliced together to form a circle to clamp and lock the heat shrink film to cooperate in the tensile test.
[0031] During the tensile testing process, two arc-shaped grooves 202 symmetrically distributed at one end of the transverse groove 201 guide the movement of two pressure plates 208, and the angle between the two pressure plates 208 is controlled by the hinge plate 207. Driven by the electric telescopic rod 205, the heat shrink film is clamped. The slide rods 209 on both sides of the pressure plate 208 enter the transverse grooves 201 on both sides of the horizontal frame 1, and the semi-circular plates 210 on one side of the slide rods 209 are spliced together to form a circle to lock the heat shrink film clamping. This allows the heat shrink film to be clamped and guided into the single groove to lock the heat shrink film clamping process, thereby ensuring the accuracy of the heat shrink film tensile test data.
[0032] like Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, in this embodiment, two arc-shaped grooves 202 are symmetrically and evenly distributed at one end of the transverse groove 201. The inner wall of the arc-shaped groove 202 is movably connected to the outer wall of the slide rod 209. The slide rod 209 moves in the arc-shaped groove 202 to guide the pressure plate 208 to flip with the hinge plate 207, thereby controlling its clamping operation on the heat shrink film. The two pulleys 206 are fixedly connected to a positioning frame 204 at the end away from the hinge plate 207. The positioning frame 204 is movably connected to the transverse groove 201 and supports the hinge plate 207 to cooperate with the electric telescopic rod 205 to move and perform stretch detection on the heat shrink film. The positioning frame 204 is located away from the pulleys 206. One end is fixedly connected to a limiting plate 203, and both limiting plates 203 are located on both sides of the horizontal frame 1. An electric telescopic rod 205 is fixedly connected to one side of the positioning frame 204. The electric telescopic rod 205 provides power for the heat shrink film testing process. A through hole 7 is provided in the middle of one side of the horizontal frame 1, and the outer wall of the electric telescopic rod 205 is fixedly connected to the inner wall of the through hole 7. The position of the electric telescopic rod 205 is indicated by the through hole 7 to prevent displacement during the stretching test. The other end of the electric telescopic rod 205 is fixedly connected to a positioning frame 6. The positioning frame 6 is fixedly installed on one side of the horizontal frame 1 to position the electric telescopic rod 205 and increase the stability of the testing process.
[0033] like Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, in this embodiment, the positioning component 3 includes a side frame 307 fixedly installed at the end of the horizontal frame 1 away from the hinge plate 207. A pivot 301 is provided on the upper part of the inner wall of the side frame 307. A right-angle bracket 305 is movably connected to the middle of the pivot 301. An upper arc plate 304 is fixedly connected below the right-angle bracket 305. An elastic shaft bracket 302 is provided on the lower part of the inner wall of the side frame 307. An arc plate 303 is provided in the middle of the elastic shaft bracket 302. The elastic shaft bracket 302 actuates the elastic toothed plate 306, causing it to disengage from the right-angle bracket 305. Pulling the upper part of the right-angle bracket 305 causes the right-angle bracket 305 to flip around the pivot 301, causing the upper arc plate 304 to flip upwards away from the arc plate 303. After opening, it will... The other end of the heat shrink film is placed between the upper arc plate 304 and the arc plate 303. After completion, the right-angle frame plate 305 is pressed down by the pivot 301. One end of the right-angle frame plate 305 squeezes the elastic toothed plate 306. The elastic arc plate bends and presses the right-angle frame plate 305. The upper arc plate 304 and the arc plate 303 cooperate to clamp the heat shrink film. During the tensile test, the heat shrink film is stretched. Since the upper arc plate 304 and the arc plate 303 are arranged in a funnel shape, after the heat shrink film is stretched, the gap between the upper arc plate 304 and the arc plate 303 is stretched and reduced due to the friction force. This further strengthens the clamping process of the heat shrink film and prevents the heat shrink film from falling off.
[0034] The right-angle bracket 305 drives the upper arc plate 304 to rotate via the pivot 301, thereby controlling the gap distance of the arc plate 303. The position of the right-angle bracket 305 is limited by the elastic toothed plate 306, thus quickly clamping the heat shrink film. During the heat shrink film stretching test, since the upper arc plate 304 and the arc plate 303 are arranged in a funnel shape, the gap between the upper arc plate 304 and the arc plate 303 is pulled and reduced due to the friction. This allows the heat shrink film to be clamped by reverse friction during the stretching test, resulting in the heat shrink film being clamped tighter and tighter, preventing the heat shrink film from falling off.
[0035] like Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, in this embodiment, an elastic toothed plate 306 is movably connected to the upper end of the right-angle frame 305 near the side frame 307. The elastic toothed plate 306 is fixedly installed on the upper part of the side frame 307. The elastic toothed plate 306 locks the right-angle frame 305, and moving the elastic toothed plate 306 unlocks the right-angle frame 305, thereby facilitating the clamping operation of the heat shrink film. The upper arc plate 304 and the arc plate 303 are movably connected and are both located on the inner wall of the side frame 307. Two auxiliary frame plates 4 are symmetrically and evenly distributed and fixedly connected below the horizontal frame 1. An inclined plate 5 is fixedly connected to the side of the auxiliary frame plate 4. The other end of the inclined plate 5 is fixedly installed at the bottom of the horizontal frame 1. The auxiliary frame plate 4 and the inclined plate 5 cooperate to support the horizontal frame 1.
[0036] The working principle of this application is as follows: The worker uses the auxiliary frame plate 4 and the inclined plate 5 to position the overall structure in a suitable location. Then, the worker moves the elastic toothed plate 306 to disengage it from the right-angle frame plate 305, pulling the upper part of the right-angle frame plate 305. The right-angle frame plate 305 then rotates around the pivot 301, causing the upper arc plate 304 to rotate upwards and away from the arc plate 303. The heat-shrinkable film is then passed through the gap between the upper arc plate 304 and the arc plate 303 in the side frame 307. At this time, the electric telescopic rod 205 drives the positioning frame 204 to extend, pushing... The movable positioning frame 204 moves along the transverse groove 201 into the two arc-shaped grooves 202, causing the pressure plate 208 connected to the hinge plate 207 to be driven. The sliding rods 209 on both sides of the pressure plate 208 enter the corresponding arc-shaped grooves 202, causing the two pressure plates 208 to unfold with the hinge plate 207 as the hinge structure. The heat shrink film to be tested is placed between the two pressure plates 208. After completion, the electric telescopic rod 205 is activated to retract, causing the positioning frame 204 to move into the transverse groove 201, and the sliding rods on both sides of the pressure plate 208... 209 moves along the arc-shaped groove 202 and is joined by the hinge plate 207, squeezing and clamping the heat shrink film to flatten it within the horizontal frame 1. The pivot 301 presses down on the right-angle frame plate 305, one end of which presses against the elastic toothed plate 306. The elastic arc plate bends and presses down on the right-angle frame plate 305. The upper arc plate 304 and the arc-shaped plate 303 cooperate to clamp the heat shrink film. During the stretching test, the heat shrink film is stretched due to the interaction between the upper arc plate 304 and the arc plate 303. The heat shrink film is arranged in a funnel shape. After being stretched, the gap between the upper arc plate 304 and the arc plate 303 is reduced due to friction, which further strengthens the clamping process of the heat shrink film and prevents it from falling off. After clamping both ends of the heat shrink film, the electric telescopic rod 205 continues to pull, and the two sliding rods 209 enter the horizontal grooves 201 on both sides of the horizontal frame 1. The semi-circular plates 210 on one side of the sliding rods 209 are spliced together to form a circle to lock the heat shrink film clamping, so as to perform a stretch test on the heat shrink film.
[0037] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.
Claims
1. A tensile strength testing device for heat shrink film preparation, comprising a horizontal frame (1), characterized in that, A tensioning component (2) is provided on one side of the inner wall of the horizontal frame (1), and a positioning component (3) is provided on the other side of the inner wall of the horizontal frame (1). The tensioning component (2) includes a transverse groove (201) opened on both sides of the horizontal frame (1). A pulley (206) is movably connected to the inner wall of the transverse groove (201). A hinge plate (207) is movably connected to the middle of the two pulleys (206). A pressure plate (208) is fixedly connected to both ends of the hinge plate (207) away from the shaft. A slide rod (209) is fixedly connected to both ends of the pressure plate (208). A semi-circular plate (210) is fixedly connected to one end of the slide rod (209) away from the pressure plate (208). The two semi-circular plates (210) on the same side are spliced together to form a circle.
2. The tensile strength testing device for heat shrink film preparation as described in claim 1, characterized in that, Two arc-shaped grooves (202) are symmetrically and evenly distributed at one end of the transverse groove (201), and the inner wall of the arc-shaped groove (202) is movably connected to the outer wall of the slide rod (209).
3. The tensile strength testing device for heat shrink film preparation as described in claim 2, characterized in that, The two pulleys (206) are fixedly connected to a positioning frame (204) at the end away from the hinge plate (207), and the positioning frame (204) is movably connected to the cross groove (201).
4. The tensile strength testing device for heat shrink film preparation as described in claim 3, characterized in that, The positioning frame (204) is fixedly connected to a limiting plate (203) at the end away from the pulley (206), and both limiting plates (203) are located on both sides of the horizontal frame (1).
5. The tensile strength testing device for heat shrink film preparation as described in claim 4, characterized in that, An electric telescopic rod (205) is fixedly connected to one side of the positioning frame (204), and a through hole (7) is provided in the middle of one side of the horizontal frame (1), and the outer wall of the electric telescopic rod (205) is fixedly connected to the inner wall of the through hole (7).
6. The tensile strength testing device for heat shrink film preparation as described in claim 5, characterized in that, The other end of the electric telescopic rod (205) is fixedly connected to a positioning frame (6), which is fixedly installed on one side of the horizontal frame (1).
7. The tensile strength testing device for heat shrink film preparation as described in claim 4, characterized in that, The positioning component (3) includes a side frame (307) fixedly installed on the end of the horizontal frame (1) away from the hinge plate (207). A pivot (301) is provided on the upper part of the inner wall of the side frame (307). A right-angle bracket (305) is movably connected to the middle of the pivot (301). An upper arc plate (304) is fixedly connected to the lower part of the right-angle bracket (305). An elastic shaft bracket (302) is provided on the lower part of the inner side wall of the side frame (307). An arc plate (303) is provided in the middle of the elastic shaft bracket (302).
8. The tensile strength testing device for heat shrink film preparation as described in claim 7, characterized in that, An elastic toothed plate (306) is movably connected to one end of the right-angle frame plate (305) near the side frame (307), and the elastic toothed plate (306) is fixedly installed on the top of the side frame (307).
9. The tensile strength testing device for heat shrink film preparation as described in claim 8, characterized in that, The upper arc plate (304) is movably connected to the arc plate (303), and both are located on the inner wall of the side frame (307).
10. The tensile strength testing device for heat shrink film preparation as described in claim 1, characterized in that, Two auxiliary frame plates (4) are symmetrically and evenly distributed and fixedly connected below the horizontal frame (1). An inclined plate (5) is fixedly connected to the side of the auxiliary frame plate (4), and the other end of the inclined plate (5) is fixedly installed at the bottom of the horizontal frame (1).