Tension testing machine for PE protective film

Abstract

The utility model relates to a tensile testing machine for a PE protective film, which comprises an operating table and a rack connected with the operating table in a sliding manner, the interior of the operating table is hollow and is provided with a driving device, the bottom of the operating table and the side surface of the rack are provided with two groups of clamping devices, the driving device is matched with the rack, and the clamping devices are connected with the operating table in a sliding manner. And the two groups are oppositely arranged. Through mutual cooperation of a mounting plate, a moving plate, a limiting rod, a sliding groove, a clamping plate, a sliding rod and an air cylinder, when the air cylinder drives the moving plate to move up and down, the sliding rod is driven by the inclined sliding groove to drive the clamping plate to move, and meanwhile under the action of the limiting groove, movement of the clamping plate is limited to be transverse left-right movement; the multiple sets of clamping plates move together to clamp multiple sets of protective films at a time to complete testing.

Description

Technical Field

[0001] The utility model relates to the technical field of PE protective film tensile testing, in particular to a tensile testing machine for PE protective films. Background Art

[0002] The exterior of the refrigerator usually requires the use of PE protective film for protection and decoration. Whether the performance of the PE protective film meets the standards mainly depends on whether the tensile strength is high enough. Therefore, a tensile test device is required to perform a tensile test on it during the production process.

[0003] The utility model with the existing patent publication number CN216160323U relates to the field of refrigerator PE protective film testing technology, and discloses a tensile test device for refrigerator PE protective film, including a workbench and a supporting mechanism arranged on the bottom surface of the workbench, and a tensile test mechanism is installed on the workbench; the top surface of the workbench is provided with a strip groove and a groove, and the strip groove and the groove are mutually connected; the tensile test mechanism includes a tensile test component, a limit component and a fixing component; the tensile test component is installed inside the strip groove; the number of limit components is two, and the two limit components are respectively installed at the two ends of the tensile test component; the two limit components are installed with fixing components on the side away from the workbench; the fixing components include a fixing frame, a limit block, a movable rod, a clamping block, a clamping block, a strip sheet, a spring and a control rod; the fixing frame is installed on the limit component. The utility model realizes the fixation of the refrigerator PE protective film during the tensile test through the setting of the fixing component, and achieves a better fixing effect.

[0004] After analysis, it was found that the device could only test one group of PE protective films at a time during the tensile test, and the test speed was low. Utility Model Content

[0005] The utility model aims to provide a tensile testing machine for PE protective film, which has solved the problems raised in the above background.

[0006] In order to solve the above technical problems, the utility model provides a tensile testing machine for PE protective film, including an operating table and a rack slidably connected to the operating table, the operating table is hollow inside and is provided with a driving device, the bottom of the operating table and the side of the rack are provided with a clamping device, the driving device is adapted to the rack, and the clamping device is provided in two groups and is arranged facing each other.

[0007] Furthermore, the driving device includes a motor, a worm and a worm wheel. The motor is arranged at the bottom end of the operating table, and the output end is connected to the worm. The inner wall of the operating table is rotatably connected to the worm wheel. The worm is meshed with the worm wheel, and the worm wheel is meshed with the rack.

[0008] Furthermore, the clamping device includes a mounting plate, a limiting rod and a clamping plate. The two groups of mounting plates are respectively arranged on the operating table and the side of the rack. The front end of the mounting plate is connected to the limiting rod. The limiting rod is slidably connected to the clamping plate through a sliding rod, and the sliding rod passes through the clamping plate. The clamping plates are provided with multiple groups, and the clamping plates are connected to a transmission mechanism through a sliding rod.

[0009] Furthermore, the transmission mechanism includes a movable plate, a slide groove and a cylinder. The cylinder is fixedly connected to the mounting plate through an L-shaped plate. The output end of the cylinder is connected to the movable plate. The movable plate is slidably connected to the mounting plate and is provided with multiple groups of inclined slide grooves. The slide grooves are slidably connected to the slide rod.

[0010] Furthermore, a plurality of groups of positioning holes are provided on the side of the rack, and a positioning mechanism is provided on one group of the clamping devices located on the side of the rack among the two groups of the clamping devices to cooperate with the positioning holes. The positioning mechanism includes a positioning groove, a positioning rod and a return spring. The positioning groove is provided at the top of the mounting plate, and a positioning rod is slidably connected in the positioning groove. The cross-sections of the positioning groove and the positioning rod are both L-shaped, and the positioning rod is connected to a return spring.

[0011] Furthermore, a heat dissipation port is provided on a side of the operating table away from the rack, and a dustproof net is installed in the heat dissipation port.

[0012] Furthermore, scale lines are arranged on the side surface of the rack, and two groups of scale lines are symmetrically arranged.

[0013] The beneficial effects of the utility model are:

[0014] Through the mutual cooperation among the mounting plate, movable plate, limiting rod, slide groove, clamping plate, sliding rod and cylinder, when the cylinder drives the movable plate to move up and down, the sliding rod will drive the clamping plate to move through the inclined slide groove. At the same time, under the action of the limiting groove, the movement of the clamping plate is limited to lateral left and right movement. Multiple groups of clamping plates move together to clamp multiple groups of protective films at one time to complete the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of one side of the utility model;

[0018] Figure 3 It is a schematic diagram of the internal structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the driving device of the utility model;

[0020] Figure 5 It is a schematic diagram of the structure of the clamping device of the utility model;

[0021] Figure 6 It is a schematic diagram of the transmission mechanism structure of the utility model;

[0022] Figure 7 It is a cross-sectional view of the positioning mechanism of the utility model.

[0023] In the figure: 1. operating table; 2. driving device; 201. motor; 202. worm; 203. worm wheel; 3. rack; 301. positioning hole; 302. scale line; 4. clamping device; 401. mounting plate; 402. moving plate; 403. limiting rod; 404. slide groove; 405. clamping plate; 406. slide rod; 407. cylinder; 5. heat dissipation port; 501. dustproof net; 6. positioning mechanism; 601. positioning groove; 602. positioning rod; 603. reset spring. DETAILED DESCRIPTION

[0024] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0025] like Figures 1 to 7 As shown, the utility model provides a tensile testing machine for PE protective film, including an operating table 1 and a rack 3 slidably connected to the operating table 1, a scale line 302 is arranged on the side of the rack 3, so that the operator can preliminarily adjust the distance between the two groups of clamping devices 4, and two groups of scale lines 302 are symmetrically arranged. The operating table 1 is hollow inside and is provided with a driving device 2. The clamping device 4 is arranged at the bottom of the operating table 1 and on the side of the rack 3. The driving device 2 is adapted to the rack 3. The driving device 2 drives the clamping device 4 to move through the rack 3, thereby tightening the PE protective film. There are two groups of clamping devices 4, which are arranged opposite to each other. The clamping device 4 can clamp multiple groups of PE protective films at one time, thereby improving the test efficiency. A heat dissipation port 5 is arranged on the side of the operating table 1 away from the rack 3, and a dustproof net 501 is installed in the heat dissipation port 5.

[0026] like Figure 3 and Figure 4As shown, the driving device 2 includes a motor 201, a worm 202 and a worm wheel 203. The motor 201 is arranged at the bottom end of the operating table 1, and the output end is connected to the worm 202. The inner wall of the operating table 1 is rotatably connected to the worm wheel 203. The worm 202 is meshed with the worm wheel 203. When the motor 201 is started, it will drive the worm 202 to rotate, and further drive the worm wheel 203 meshed with the worm 202 to rotate. The worm wheel 203 is meshed with the rack 3. When the worm wheel 203 rotates, it can drive the rack 3 to move, and then drive the clamping device 4 located on the rack 3 to move.

[0027] like Figure 1 , Figure 5 and Figure 6 As shown, the clamping device 4 includes a mounting plate 401, a limiting rod 403 and a clamping plate 405. The two groups of mounting plates 401 are respectively arranged on the sides of the operating table 1 and the rack 3. The front end of the mounting plate 401 is connected to the limiting rod 403. The limiting rod 403 is slidably connected to the clamping plate 405 through a sliding rod 406, and the sliding rod 406 penetrates the clamping plate 405. The clamping plate 405 is provided with multiple groups. The clamping plate 405 is connected to a transmission mechanism through the sliding rod 406. The transmission mechanism includes a moving plate 402, a sliding groove 404 and a cylinder 407. The cylinder 407 is fixedly connected to the mounting plate 401 through an L-shaped plate. The cylinder 40 The output end is connected with a moving plate 402, which is slidably connected with the mounting plate 401 and is provided with a plurality of inclined sliding grooves 404, which are slidably connected with the slide rod 406. When the cylinder 407 drives the moving plate 402 to move, since the sliding groove 404 is connected with the slide rod 406, and the slide rod 406 is connected with the clamping plate 405, the moving plate 402 can drive the clamping plate 405 to move. At the same time, since the slide rod 405 is connected with the limit rod 403, the movement of the clamping plate 405 is limited to lateral left and right movement, thereby completing the clamping and loosening of the PE protective film.

[0028] like Figure 1 , Figure 5 and Figure 7 As shown, a plurality of positioning holes 301 are arranged on the side of the rack 3. A positioning mechanism 6 is also arranged on one of the two clamping devices 4 located on the side of the rack 3 to cooperate with the positioning holes 301. The positioning mechanism 6 includes a positioning groove 601, a positioning rod 602 and a return spring 603. The positioning groove 601 is arranged at the top of the mounting plate 401. The positioning rod 602 is slidably connected in the positioning groove 601. The cross sections of the positioning groove 601 and the positioning rod 602 are both L-shaped. The positioning rod 602 is connected to the return spring 603. During specific testing, the sizes of the PE protective films to be tested are usually different. In order to facilitate clamping, it is necessary to adjust the distance between the two clamping devices 4. At this time, the positioning rod 602 is moved so that the front end of the positioning rod 602 is separated from the positioning hole 301, and the clamping device 4 can be moved up and down.

[0029] Specifically, when the PE protective film needs to be subjected to a tensile test, according to the size of the PE protective film, the wave positioning rod 602 causes the clamping device 4 on the rack 3 to disengage from the positioning hole 301 on the rack 3. When it moves to a suitable position, the positioning rod 602 is released, and under the action of the reset spring 603, the clamping device 4 is fixed, and the PE protective film is placed between the clamping plates 405. The cylinder 407 is started to drive the moving plate 405 to move, so that the clamping plates 405 are close to each other and the PE protective film is clamped. Subsequently, the motor 201 is started to drive the rack 3 to move, thereby driving the clamping device 4 on the rack 3 to move upward, and the PE protective film is started to be tested.

[0030] The above is based on the ideal embodiment of the utility model. Through the above description, relevant staff can make various changes and modifications without departing from the technical idea of ​​the invention. The technical scope of the invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A tensile testing machine for a PE protective film, comprising an operating table (1) and a rack (3) slidably connected to the operating table (1), characterized in that: The operating table (1) is hollow inside and is provided with a driving device (2). A clamping device (4) is provided at the bottom of the operating table (1) and on the side of the rack (3). Driving device (2): the driving device (2) is adapted to the rack (3); Clamping device (4): The clamping device (4) is provided in two groups and is arranged facing each other.

2. A tensile testing machine for PE protective film as claimed in claim 1, characterized in that: The driving device (2) comprises a motor (201), a worm (202) and a worm wheel (203); the motor (201) is arranged at the bottom end of the operating table (1), and the output end is connected to the worm (202); the inner wall of the operating table (1) is rotatably connected to the worm wheel (203); the worm (202) is meshed with the worm wheel (203), and the worm wheel (203) is meshed with the rack (3).

3. A tensile testing machine for PE protective film as claimed in claim 1, characterized in that: The clamping device (4) comprises a mounting plate (401), a limiting rod (403) and a clamping plate (405). Two groups of the mounting plates (401) are respectively arranged on the sides of the operating table (1) and the rack (3). The front end of the mounting plate (401) is connected to the limiting rod (403). The limiting rod (403) is slidably connected to the clamping plate (405) through a sliding rod (406), and the sliding rod (406) passes through the clamping plate (405). The clamping plates (405) are provided with multiple groups, and the clamping plates (405) are connected to a transmission mechanism through the sliding rod (406).

4. A tensile testing machine for PE protective film as claimed in claim 3, characterized in that: The transmission mechanism comprises a moving plate (402), a slide groove (404) and a cylinder (407); the cylinder (407) is fixedly connected to the mounting plate (401) via an L-shaped plate; the output end of the cylinder (407) is connected to the moving plate (402); the moving plate (402) is slidably connected to the mounting plate (401) and is provided with a plurality of groups of inclined slide grooves (404); the slide grooves (404) are slidably connected to the sliding rod (406).

5. A tensile testing machine for PE protective film as claimed in claim 1, characterized in that: The side of the rack (3) is provided with a plurality of positioning holes (301); one of the two groups of clamping devices (4) located on the side of the rack (3) is also provided with a positioning mechanism (6) in cooperation with the positioning holes (301); the positioning mechanism (6) comprises a positioning groove (601), a positioning rod (602) and a return spring (603); the positioning groove (601) is provided at the top of the mounting plate (401); the positioning rod (602) is slidably connected in the positioning groove (601); the cross sections of the positioning groove (601) and the positioning rod (602) are both L-shaped; the positioning rod (602) is connected to the return spring (603).

6. A tensile testing machine for PE protective film as claimed in claim 1, characterized in that: A heat dissipation port (5) is provided on a side of the operating table (1) away from the rack (3), and a dustproof net (501) is installed in the heat dissipation port (5).

7. A tensile testing machine for PE protective film as claimed in claim 1, characterized in that: The side surface of the rack (3) is provided with scale lines (302), and the scale lines (302) are symmetrically arranged in two groups.

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