Film stretching testing device

Abstract

The utility model discloses a film stretching testing device which comprises a machine shell, the fixing base is connected to the machine shell, a first clamping unit is connected to the fixing base, and a first clamping space capable of being opened and closed up and down is formed in the first clamping unit; the stretching device is connected to the machine shell, the stretching device is in transmission connection with a movable base, the stretching device can drive the movable base to move in the direction close to or away from the fixed base, a second clamping unit is connected to the movable base, and a second clamping space capable of being opened and closed up and down is formed in the second clamping unit; due to the fact that the two ends of the membrane material are directly pressed and positioned in a clamping and fixing mode, the problems that the ends of the membrane material are broken and disengaged when the membrane material is stretched are effectively solved, and the stability of a membrane material stretching test is improved.

Description

Technical Field

[0001] The utility model relates to a testing device, in particular to a film stretching testing device. Background Art

[0002] After the membrane is produced, it is usually necessary to test it to obtain the yield strength and fracture strength of the membrane. The current tensile test method of the membrane is usually to first open holes at both ends of the membrane, insert fixed rods at the openings at both ends, and then apply a pulling force to the two ends of the membrane to move away from each other, so as to perform a tensile test on the membrane. However, this tensile test method is prone to the membrane coming off the fixed rod when the force is applied to the membrane, resulting in test failure, or the membrane directly breaks at the opening position, making it impossible to fully tensile test the membrane. Therefore, there is an urgent need for a device that can perform a more stable tensile test on the membrane. Utility Model Content

[0003] The utility model aims to provide a film stretching test device to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0004] The solution of the utility model to solve the technical problem is:

[0005] A membrane stretching testing device comprises: a casing; a fixed seat connected to the casing, a first clamping unit connected to the fixed seat, a first clamping space that can be opened and closed up and down is formed in the first clamping unit; a stretching device connected to the casing, the stretching device is transmission-connected to a movable seat, the stretching device can drive the movable seat to move in a direction approaching or away from the fixed seat, the movable seat is connected to a second clamping unit, a second clamping space that can be opened and closed up and down is formed in the second clamping unit, and the first clamping space and the second clamping space are directly opposite to each other.

[0006] This technical solution has at least the following beneficial effects: when conducting a tensile test on a membrane material, the first clamping space in the first clamping unit and the second clamping space in the second clamping unit are opened, and the two ends of the membrane material are placed in the first clamping space and the second clamping space, and then the first clamping space and the second clamping space are closed, and the two ends of the membrane material are clamped, and then the movable seat is driven by the stretching device to move in a direction away from the fixed seat, and the two ends of the membrane material are stretched in directions away from each other, and the membrane material is subjected to a tensile test. In this process, the two ends of the membrane material are directly pressed and positioned by clamping and fixing, which effectively prevents the ends of the membrane material from breaking or falling out during stretching, thereby improving the stability of the tensile test on the membrane material.

[0007] As a further improvement of the above technical solution, the first clamping unit includes a first clamping frame, a first rotating rod and a first pressure block. The first clamping frame is connected to the fixed seat. The first clamping frame is surrounded by a first slot facing the second clamping unit. The first rotating rod is connected to the top side of the first clamping frame by a thread. The bottom end of the first rotating rod extends into the first slot. The first pressure block is rotatably connected to the bottom end of the first rotating rod. The first clamping space is formed between the first pressure block and the inner bottom side of the first slot. The first clamping frame is surrounded to form a first slot in which the end of the membrane material can be placed. When the membrane material needs to be fixed, the first rotating rod is first rotated so that the first rotating rod drives the first pressure block to rise upward. At this time, the first clamping space formed between the first pressure block and the inner bottom side of the first slot is opened, and then the end of the membrane material is placed in the first clamping space, and then the first rotating rod drives the first pressure block to move downward. At this time, the first clamping space formed between the first pressure block and the inner bottom side of the first slot is closed to clamp the membrane material. Since the first pressure block and the first rotating rod are rotatably connected, when the first pressure block is pressed against the membrane material downward, the friction between the membrane material and the first pressure block can effectively reduce the relative rotation between the first pressure block and the membrane material, thereby reducing the pulling deformation of the membrane material during clamping, and better realizing the positioning of the end of the membrane material.

[0008] As a further improvement of the above technical solution, the second clamping unit includes a second clamping frame, a second rotating rod and a second pressure block. The second clamping frame is connected to the movable seat. The second clamping frame is surrounded by a second slot facing the first clamping frame. The second rotating rod is connected to the top side of the second clamping frame by a thread. The bottom end of the second rotating rod extends into the second slot. The second pressure block is rotatably connected to the bottom end of the second rotating rod. The second clamping space is formed between the second pressure block and the inner bottom side of the second slot. The second clamping frame is surrounded to form a second slot in which the end of the membrane material can be placed. When the membrane material needs to be fixed, the second rotating rod is first rotated so that the second rotating rod drives the second pressure block to rise upward. At this time, the second clamping space formed between the second pressure block and the inner bottom side of the second slot is opened, and then the end of the membrane material is placed in the second clamping space, and then the second rotating rod drives the second pressure block to move downward. At this time, the second clamping space formed between the second pressure block and the inner bottom side of the second slot is closed to clamp the membrane material. Since the second pressure block and the second rotating rod are rotatably connected, when the second pressure block is pressed against the membrane material downward, the friction between the membrane material and the second pressure block can effectively reduce the relative rotation between the second pressure block and the membrane material, thereby reducing the pulling deformation of the membrane material during clamping, and better realizing the positioning of the end of the membrane material.

[0009] As a further improvement of the above technical solution, the first clamping unit and the second clamping unit are arranged in multiple intervals in the horizontal direction, and the multiple first clamping units are respectively opposite to the multiple second clamping units. When in use, one first clamping unit and one second clamping unit form a test group, and multiple membranes can be placed in multiple test groups for clamping and positioning, and then tensile tests can be performed. In this way, multiple membranes can be intuitively compared in tensile tests under the same tensile force, thereby improving the convenience of tensile tests on membranes.

[0010] As a further improvement of the above technical solution, a first support plate is connected between the inner bottom sides of the plurality of first slots, and a second support plate is connected between the inner bottom sides of the plurality of second slots. The first support plate is connected to the plurality of first clamps, and the first support plate can be used to increase the stability of the connection structure between the plurality of first clamps, and ensure the uniformity of the clamping positioning points of the film material at the fixed seat between the plurality of test groups. Similarly, the second support plate is connected to the plurality of second clamps, and the second support plate can be used to increase the stability of the connection structure between the plurality of second clamps, and ensure the uniformity of the clamping positioning points of the film material at the movable seat between the plurality of test groups.

[0011] As a further improvement of the above technical solution, the utility model further includes a top cover, the top cover is connected to the top side of the housing, the stretching device is located inside the top cover, and the top cover is provided with a limit groove for the movable seat to avoid. The top cover can cover the top space of the housing and surround and protect the stretching device to improve the overall appearance. The top cover is also provided with a limit groove for the movable seat to avoid movement. The extension direction of the limit groove is the same as the extension direction of the movable seat. The limit groove can further improve the stability of the movable seat when stretching the film material and reduce the shaking and displacement of the movable seat during movement.

[0012] As a further improvement of the above technical solution, a ruler is connected to the top side of the top cover. When the membrane is stretched, the stretched length of the membrane can be visually observed through the ruler on the top cover, so as to quantify the yield strength and fracture strength of the membrane, further improving the experience of the membrane stretching test.

[0013] As a further improvement of the above technical solution, the top cover is detachably connected to the housing. When the first clamping unit, the second clamping unit or the stretching device and other structures need to be maintained, the top cover can be assembled and disassembled, thereby improving the convenience of later use and maintenance.

[0014] As a further improvement of the above technical solution, the stretching device is an electric guide rail, which provides driving force to the movable seat, thereby smoothly driving the second clamping unit and the first clamping unit to move closer to or away from each other, and the travel direction is better controlled.

[0015] As a further improvement of the above technical solution, the housing is provided with a switch button and a speed regulating button, and the switch button and the speed regulating button are electrically connected to the electric guide rail respectively. When the electric guide rail needs to be controlled to work, the switch button can be used to control the start and stop of the electric guide rail, and the speed regulating button can be used to adjust the driving force provided to the movable seat, thereby adjusting the tension and speed provided when the film is stretched, which is more flexible and convenient during testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following is a brief description of the drawings required for the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present utility model, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0017] Figure 1 It is an overall stereogram of the utility model.

[0018] Figure 2 It is a three-dimensional diagram of the utility model without the top cover.

[0019] In the accompanying drawings: 100-housing, 200-fixed seat, 210-first clamping unit, 211-first clamping frame, 212-first rotating rod, 213-first pressure block, 214-first support plate, 310-stretching device, 320-movable seat, 330-second clamping unit, 331-second clamping frame, 332-second rotating rod, 333-second support plate, 400-top cover, 410-limiting groove, 420-ruler, 510-switch button, 520-speed adjustment button. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0021] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0023] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0024] Reference Figure 1 and Figure 2 The membrane stretching testing device includes a housing 100, a fixed seat 200 and a stretching device 310, wherein the fixed seat 200 is connected to the housing 100, the fixed seat 200 is connected to a first clamping unit 210, the first clamping unit 210 is formed with a first clamping space that can be opened and closed up and down, the stretching device 310 is connected to the housing 100, the stretching device 310 is transmission-connected with a movable seat 320, the stretching device 310 can drive the movable seat 320 to move in a direction close to or away from the fixed seat 200, the movable seat 320 is connected to a second clamping unit 330, the second clamping unit 330 is formed with a second clamping space that can be opened and closed up and down, and the first clamping space and the second clamping space are directly opposite to each other.

[0025] As can be seen from the above, when conducting a tensile test on the membrane material, the first clamping space in the first clamping unit 210 and the second clamping space in the second clamping unit 330 are opened, and the two ends of the membrane material are placed in the first clamping space and the second clamping space, and then the first clamping space and the second clamping space are closed, and the two ends of the membrane material are clamped. Then, the stretching device 310 drives the movable seat 320 to move away from the fixed seat 200, and the two ends of the membrane material are stretched in directions away from each other, and the membrane material is subjected to a tensile test. In this process, the two ends of the membrane material are directly pressed and positioned by clamping and fixing, which effectively prevents the ends of the membrane material from breaking or falling out during stretching, thereby improving the stability of the tensile test on the membrane material.

[0026] The first clamping unit 210 mainly forms a first clamping space clamped in the up-down direction, and its structural forms are various. Specifically, in the present embodiment, the first clamping unit 210 includes a first clamping frame 211, a first rotating rod 212 and a first pressing block 213. The first clamping frame 211 is connected to the fixing seat 200. The first clamping frame 211 is surrounded by a first slot facing the second clamping unit 330. The first rotating rod 212 is connected to the top side of the first clamping frame 211 by a thread. The bottom end of the first rotating rod 212 extends into the first slot. The first pressing block 213 is rotatably connected to the first rotating rod 212. At the bottom end, the first clamping space is formed between the first pressing block 213 and the inner bottom side of the first groove. In practical applications, the first clamping frame 211 can be a plate body formed as one piece by bending. For example, the upper and lower ends of a plate body are bent in the same direction to form an upper folded edge and a lower folded edge. The lower folded edge is connected to the fixing seat 200. The space between the upper folded edge and the lower folded edge forms the above-mentioned first groove, and the first rotating rod 212 is connected to the upper folded edge. A first knob can also be connected to the end of the first rotating rod 212. When in use, the first knob is used to apply force to the first rotating rod 212 to better rotate the first rotating rod 212.

[0027] In this first clamping unit 210, the first clamping frame 211 is surrounded to form a first slot for placing the end of the film material. When the film material needs to be fixed, the first rotating rod 212 is first rotated so that the first rotating rod 212 drives the first pressing block 213 to rise upward. At this time, the first clamping space formed between the first pressing block 213 and the inner bottom side of the first slot is opened, and then the end of the film material is placed in the first clamping space. The first rotating rod 212 drives the first pressing block 213 to move downward. At this time, the first clamping space formed between the first pressing block 213 and the inner bottom side of the first slot is closed, and the film material is clamped. 3 is rotatably connected to the first rotating rod 212. When the first pressing block 213 presses downward against the film material, the friction between the film material and the first pressing block 213 can effectively reduce the relative rotation between the first pressing block 213 and the film material, thereby reducing the pulling deformation of the film material during clamping, and better positioning the end of the film material. In addition, the shape of the first pressing block 213 can be circular or rectangular. When the shape of the first pressing block 213 is rectangular, the side of the rectangle of the first pressing block 213 can be close to the inner wall of the first clamping frame 211, thereby limiting the first pressing block 213 to rotate together with the first rotating rod 212.

[0028] The second clamping unit 330 has a similar structure to the first clamping unit 210, and is mainly used to form a second clamping space that can be opened and closed in the up and down directions. Specifically, the second clamping unit 330 includes a second clamping frame 331, a second rotating rod 332 and a second pressing block. The second clamping frame 331 is connected to the movable seat 320, and the second clamping frame 331 is surrounded by a second slot facing the first clamping frame 211. The second rotating rod 332 is connected to the top side of the second clamping frame 331 by a thread, and the bottom end of the second rotating rod 332 extends into the second slot. The second pressing block is rotatably connected to the second rotating rod 33 2, the second clamping space is formed between the second pressing block and the inner bottom side of the second groove. Similarly, the second clamping frame 331 can be a plate body formed in one piece by bending, for example, the upper and lower ends of a plate body are bent in the same direction to form an upper folding edge and a lower folding edge, the lower folding edge is connected to the movable seat 320, and the space between the upper folding edge and the lower folding edge forms the above-mentioned second groove, and the second rotating rod 332 is connected to the upper folding edge, and a second knob can be connected to the end of the second rotating rod 332. When in use, the second rotating rod 332 is forced by the second knob to better rotate the second rotating rod 332.

[0029] In this second clamping unit 330, the second clamping frame 331 is surrounded to form a second slot for placing the end of the membrane material. When the membrane material needs to be fixed, the second rotating rod 332 is first rotated so that the second rotating rod 332 drives the second pressing block to rise upward. At this time, the second clamping space formed between the second pressing block and the inner bottom side of the second slot is opened. Then the end of the membrane material is placed in the second clamping space, and the second rotating rod 332 drives the second pressing block to move downward. At this time, the second clamping space formed between the second pressing block and the inner bottom side of the second slot is closed, and the membrane material is clamped. The second rotating rod 332 is rotatably connected. When the second pressure block is pressed downward against the film material, the friction between the film material and the second pressure block can effectively reduce the relative rotation between the second pressure block and the film material, thereby reducing the pulling deformation of the film material during clamping, and better positioning the end of the film material. In addition, the shape of the second pressure block is the same as the first pressure block 213, which can be circular or rectangular. When the shape of the second pressure block is rectangular, the side of the second pressure block rectangle can be placed close to the inner wall of the second clamping frame 331, thereby limiting the second pressure block from rotating with the second rotating rod 332.

[0030] In the above tensile test of the membrane material, the tensile test may be performed on only one membrane material. When multiple membrane materials need to be tested and compared at the same time, in this embodiment, the first clamping unit 210 and the second clamping unit 330 are arranged in a plurality of intervals in the horizontal direction, and the plurality of first clamping units 210 are respectively opposite to the plurality of second clamping units 330. When in use, a first clamping unit 210 and a second clamping unit 330 form a test group, and multiple membrane materials can be respectively placed in the multiple test groups for clamping and positioning, and then the tensile test is performed. In this way, the tensile test comparison of multiple membrane materials can be intuitively performed under the condition of applying the same tensile force, thereby improving the convenience of the tensile test of the membrane materials.

[0031] Furthermore, a first support plate 214 is connected between the inner bottom sides of the plurality of first slots, and a second support plate 333 is connected between the inner bottom sides of the plurality of second slots. The first support plates 214 are connected inside the plurality of first clamps 211, and the first support plates 214 can be used to increase the stability of the connection structure between the plurality of first clamps 211, and ensure the uniformity of the clamping positioning points of the film material on the fixed seat 200 among the plurality of test groups. Similarly, the second support plates 333 are connected inside the plurality of second clamps 331, and the second support plates 333 can be used to increase the stability of the connection structure between the plurality of second clamps 331, and ensure the uniformity of the clamping positioning points of the film material on the movable seat 320 among the plurality of test groups.

[0032] In the above embodiment, main structural components such as the first clamping unit 210, the second clamping unit 330 and the stretching device 310 can be directly exposed on the casing 100. In order to better protect them, the utility model also includes a top cover 400, which is connected to the top side of the casing 100. The stretching device 310 is located in the top cover 400. The top cover 400 is provided with a limiting groove 410 for avoiding the movable seat 320. In actual application, a cavity with an opening facing downward is formed inside the top cover 400. When the top cover 400 is connected to the top side of the casing 100, the stretching device 310 and the electrical components installed inside can be stored and protected.

[0033] The top cover 400 can cover the top space of the casing 100 and surround and protect the stretching device 310 to improve the overall appearance. The top cover 400 is also provided with a limiting groove 410 for the movable seat 320 to avoid movement. The extension direction of the limiting groove 410 is the same as the extension direction of the movable seat 320. The limiting groove 410 can be used to further improve the stability of the movable seat 320 when stretching the film material, thereby reducing the shaking and deviation of the movable seat 320 during movement. In practical applications, a fixed cover box can also be provided on the top side of the top cover 400, and the fixed cover box is connected to the position where the first clamping unit 210 is provided on the top cover 400. The internal space of the fixed cover box and the top cover 400 are communicated with each other, and the first clamping unit 210 is also surrounded and protected by the fixed cover box. At this time, the top end of the first rotating rod 212 passes through the fixed cover box upward, and the fixed cover box is provided with a first hole at the position opposite to the first slot, so as to avoid the end of the film material from extending into the first clamping space for fixing. In addition, a movable cover box is directly sleeved downward on the outside of the movable seat 320, and the movable cover box surrounds and protects multiple second clamping units 330. At this time, the top end of the second rotating rod 332 passes through the movable cover box upward, and the movable cover box is provided with a second hole at the position opposite to the second slot, so as to avoid the end of the film material from extending into the second clamping space for fixing.

[0034] In some embodiments, a ruler 420 is connected to the top side of the top cover 400. When the film is stretched, the stretched length of the film can be visually observed through the ruler 420 on the top cover 400, so as to quantify the yield strength and fracture strength of the film, further improving the experience of the film stretching test.

[0035] In order to facilitate subsequent use and maintenance, in this embodiment, the top cover 400 is detachably connected to the housing 100, for example, the top cover 400 is connected to the housing 100 by means of a buckle and a slot that cooperate with each other, or the top cover 400 is fixed to the housing 100 by driving screws, positioning pins and other fasteners. When it is necessary to maintain the first clamping unit 210, the second clamping unit 330 or the stretching device 310 and other structures, the top cover 400 can be assembled and disassembled, thereby improving the convenience of subsequent use and maintenance.

[0036] The stretching device 310 is mainly used to provide a driving force for the reciprocating motion of the movable seat 320. There are many structural forms, such as electric screws, cylinders or hydraulic cylinders, etc. In order to better control and adjust the stretching of the film material, in this embodiment, the stretching device 310 is an electric guide rail. The electric guide rail provides a driving force to the movable seat 320, thereby smoothly driving the second clamping unit 330 and the first clamping unit 210 to move closer to or away from each other, and the travel direction is better controlled.

[0037] In some embodiments, the housing 100 is provided with a switch button 510 and a speed regulating button 520, and the switch button 510 and the speed regulating button 520 are electrically connected to the electric guide rail, respectively. When the electric guide rail needs to be controlled to work, the start and stop of the electric guide rail can be controlled by the switch button 510, and the driving force provided to the movable seat 320 can be adjusted by the speed regulating button 520, so as to adjust the tension size and speed provided when the film is stretched, which is more flexible and convenient during testing. In actual applications, there are many types of switch buttons 510, which can be a main switch for controlling the activity of the electric guide rail, a forward switch for controlling the electric guide rail to drive the movable seat 320 to move in a direction close to the fixed seat 200, or a backward switch for controlling the electric guide rail to drive the movable seat 320 to move in a direction away from the fixed seat 200, which can be configured according to usage needs.

[0038] The preferred implementation modes of the present invention are specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. Film stretching test device, characterized in that: include: Housing (100); A fixing seat (200) is connected to the housing (100), a first clamping unit (210) is connected to the fixing seat (200), and a first clamping space that can be opened and closed upwards and downwards is formed in the first clamping unit (210); A stretching device (310) is connected to the housing (100), and the stretching device (310) is transmission-connected to a movable seat (320). The stretching device (310) can drive the movable seat (320) to move in a direction approaching or away from the fixed seat (200). The movable seat (320) is connected to a second clamping unit (330), and a second clamping space that can be opened and closed up and down is formed in the second clamping unit (330), and the first clamping space and the second clamping space are opposite to each other.

2. The film stretching test device according to claim 1, characterized in that: The first clamping unit (210) comprises a first clamping frame (211), a first rotating rod (212) and a first pressing block (213); the first clamping frame (211) is connected to the fixing seat (200); the first clamping frame (211) is surrounded by a first slot facing the second clamping unit (330); the first rotating rod (212) is connected to the top side of the first clamping frame (211) by means of a thread; the bottom end of the first rotating rod (212) extends into the first slot; the first pressing block (213) is rotatably connected to the bottom end of the first rotating rod (212); and the first clamping space is formed between the first pressing block (213) and the inner bottom side of the first slot.

3. The film stretching test device according to claim 2, characterized in that: The second clamping unit (330) includes a second clamping frame (331), a second rotating rod (332) and a second pressing block. The second clamping frame (331) is connected to the movable seat (320). The second clamping frame (331) is surrounded by a second slot facing the first clamping frame (211). The second rotating rod (332) is connected to the top side of the second clamping frame (331) by threads. The bottom end of the second rotating rod (332) extends into the second slot. The second pressing block is rotatably connected to the bottom end of the second rotating rod (332). The second clamping space is formed between the second pressing block and the inner bottom side of the second slot.

4. The film stretching test device according to claim 3, characterized in that: A plurality of the first clamping units (210) and the second clamping units (330) are arranged at intervals in a horizontal direction, and the plurality of the first clamping units (210) are respectively opposite to the plurality of the second clamping units (330).

5. The film stretching test device according to claim 4, characterized in that: A first support plate (214) is connected between the inner bottom sides of the plurality of first slots, and a second support plate (333) is connected between the inner bottom sides of the plurality of second slots.

6. The film stretching test device according to claim 3, characterized in that: It also includes a top cover (400), the top cover (400) is connected to the top side of the casing (100), the stretching device (310) is located inside the top cover (400), and the top cover (400) is provided with a limiting groove (410) for avoiding the movable seat (320).

7. The film stretching test device according to claim 6, characterized in that: A ruler (420) is connected to the top side of the top cover (400).

8. The film stretching test device according to claim 6, characterized in that: The top cover (400) and the housing (100) are detachably connected.

9. The film stretching test device according to claim 1, characterized in that: The stretching device (310) is an electric guide rail.

10. The film stretching test device according to claim 9, characterized in that: The housing (100) is provided with a switch button (510) and a speed regulating button (520), and the switch button (510) and the speed regulating button (520) are respectively electrically connected to the electric guide rail.

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