Film material tensile testing machine

Abstract

The utility model provides a film material tensile testing machine which comprises a first chuck and a second chuck which are respectively arranged at the upper end and the lower end of a machine body, a vertical screw rod and a sliding rail are arranged on the machine body, the first chuck is in threaded connection with the screw rod, the first chuck is in sliding connection with the sliding rail, and a driving device for driving the screw rod to rotate is arranged on the machine body. The first chuck comprises a cylinder, an upper clamping plate and a lower clamping plate, the upper clamping plate is fixed at the front end of a cylinder shell, a cylinder shaft of the cylinder penetrates through the upper clamping plate and is connected with the lower clamping plate, the upper clamping plate and the lower clamping plate can be matched with each other for clamping or loosening, and the structure of the second chuck is consistent with that of the first chuck. According to the tensile testing machine, clamping is achieved through the automatic chuck, a hot melt adhesive film can be rapidly clamped, a tensile test is carried out, the efficiency of automatic clamping is higher than that of manual clamping, the reliability is better, and the tensile test efficiency of the hot melt adhesive film can be improved.

Description

[Technical field]

[0001] The utility model relates to the field of hot melt adhesive production, in particular to a film material tensile testing machine. [Background technology]

[0002] After the production of hot melt adhesive film is completed, a tensile test is required to ensure that its tensile performance meets the product qualification requirements. At present, traditional tensile machines are used to perform tensile tests on hot melt adhesive film. However, the problem with this tensile machine is that the process of fixing the two ends of the hot melt adhesive film is cumbersome, and the chuck used is manually clamped, which is not only time-consuming and labor-intensive, but manual clamping is also prone to the problem that the hot melt adhesive film is not clamped in place. [Contents of the utility model]

[0003] The purpose of the utility model is to overcome the above problems. We provide a film material tensile testing machine, which adopts an automatic chuck to clamp the hot melt adhesive film, and has better reliability and higher efficiency.

[0004] To achieve the above-mentioned purpose, the utility model provides a film material tensile testing machine, which includes a first chuck and a second chuck respectively arranged at the upper and lower ends of a machine body, a vertical screw and a slide rail are provided on the machine body, the first chuck is threadedly connected to the screw, and the first chuck is slidably connected to the slide rail, and a driving device for driving the screw to rotate is provided on the machine body, the first chuck includes a cylinder, an upper clamp and a lower clamp, the upper clamp is fixed to the front end of the cylinder shell, the cylinder shaft of the cylinder passes through the upper clamp and is connected to the lower clamp, the upper clamp and the lower clamp can cooperate with each other to clamp or loosen, and the structure of the second chuck is consistent with the structure of the first chuck.

[0005] In one or more embodiments, a plurality of arc-shaped protrusions are distributed on the bottom surface of the upper clamping plate, and an arc-shaped recess is provided on the top surface of the lower clamping plate at positions corresponding to the arc-shaped protrusions, and the arc-shaped protrusions match the arc-shaped recess.

[0006] In one or more embodiments, the height of the arc-shaped protrusion is 5MM-10MM, and a plurality of arc-shaped protrusions are arranged at intervals in front and back.

[0007] In one or more embodiments, the first chuck has a mounting base, the mounting base is provided with a threaded hole threadedly connected to the screw rod, and a sliding seat slidably connected to the slide rail.

[0008] In one or more embodiments, the driving device includes a reduction gearbox and a driving motor, which are installed on the top of the machine body, the rotating shaft of the driving motor is connected to the input end of the reduction gearbox, and the output end of the reduction gearbox is connected to the screw.

[0009] In one or more embodiments, the number of the screws is two or more, and the screws are connected by transmission gears to rotate synchronously.

[0010] Compared with the background technology, the utility model has the following effects: the tensile testing machine adopts an automatic chuck to achieve clamping, can quickly clamp the hot melt adhesive film, and perform tensile testing, the efficiency of automatic clamping is higher than that of manual clamping, and has better reliability, which helps to improve the efficiency of tensile testing of hot melt adhesive films.

Brief Description of the Drawings

[0011] Figure 1 This is a schematic diagram of the structure of the tensile testing machine of the utility model;

[0012] Figure 2 It is a structural schematic diagram of the upper clamping plate and the lower clamping plate of the utility model. [Specific implementation method]

[0013] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0014] Please see Figure 1-2 The present embodiment provides a film material tensile testing machine, which includes a first chuck 2 and a second chuck 3 respectively arranged at the upper and lower ends of a machine body 1. A vertical screw 4 and a slide rail 11 are provided on the machine body 1. The first chuck 2 is threadedly connected to the screw 4, and the first chuck is slidably connected to the slide rail 11. A driving device for driving the screw 4 to rotate is provided on the machine body 1. When the driving device drives the screw to rotate, the first chuck can slide up and down along the slide rail, thereby approaching or moving away from the second chuck. Specifically, when the driving device drives the screw to rotate forward, the first chuck approaches the second chuck, and when the driving device drives the screw to rotate reversely, the first chuck moves away from the second chuck. The first chuck 2 includes a cylinder 5, an upper clamping plate 6 and a lower clamping plate 7. The upper clamping plate 6 is fixed to the front end of the cylinder shell, and can be fixed by bolts. The cylinder shaft 51 of the cylinder 5 passes through the upper clamping plate 6 and is connected to the lower clamping plate 7. The upper clamping plate 6 and the lower clamping plate 7 can cooperate with each other to clamp or loosen. The structure of the second chuck 3 is consistent with that of the first chuck 2. The user puts one end of the hot melt adhesive film between the upper clamping plate and the lower clamping plate, and drives the lower clamping plate to fit the upper clamping plate through the cylinder to clamp the hot melt adhesive film.

[0015] The bottom surface of the upper clamping plate 6 is provided with a plurality of arc-shaped protrusions 61, and the top surface of the lower clamping plate 7 is provided with an arc-shaped recess at a position corresponding to the arc-shaped protrusions 61. The arc-shaped protrusions match the arc-shaped recesses. This structure can better clamp the hot melt adhesive film and prevent the hot melt adhesive film from loosening from the clamp during the tensile test. Preferably, the height of the arc-shaped protrusions 61 is 5MM-10MM, and the plurality of arc-shaped protrusions are arranged at intervals in front and back, and the height can be selected from 5.5MM, 6MM, and 6.5MM.

[0016] The first chuck 2 has a mounting base 8, on which a threaded hole threadedly connected to the screw rod 4 and a sliding seat slidably connected to the slide rail 11 are formed, and the mounting base is fixed to the cylinder of the first chuck by bolts.

[0017] The driving device includes a reduction gearbox 9 and a driving motor 10, and the driving motor 10 and the reduction gearbox 9 are installed on the top of the machine body 1. The rotating shaft of the driving motor is connected to the input end of the reduction gearbox, and the output end of the reduction gearbox is connected to the screw. By setting the reduction gearbox, the effect of increasing the torque can be achieved, ensuring the stability of the first chuck when moving.

[0018] The number of the screw rods 4 is two or more, and the screw rods are connected by transmission gears to rotate synchronously. The provision of two screw rods can improve the stability of the first chuck when it moves.

[0019] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed in the present invention should be included in the protection scope recorded in the claims.

Claims

1. A film material tensile testing machine, characterized in that: The invention comprises a first chuck (2) and a second chuck (3) which are respectively arranged at the upper and lower ends of a machine body (1); a vertical screw rod (4) and a slide rail (11) are arranged on the machine body (1); the first chuck (2) is screwed to the screw rod (4), and the first chuck is slidably connected to the slide rail (11); a driving device for driving the screw rod (4) to rotate is arranged on the machine body (1); the first chuck (2) comprises a cylinder (5), an upper clamping plate (6) and a lower clamping plate (7); the upper clamping plate (6) is fixed to the front end of the cylinder shell; the cylinder shaft (51) of the cylinder (5) passes through the upper clamping plate (6) and is connected to the lower clamping plate (7); the upper clamping plate (6) and the lower clamping plate (7) can cooperate with each other to clamp or release; the structure of the second chuck (3) is consistent with that of the first chuck (2).

2. A film material tensile testing machine according to claim 1, characterized in that: The bottom surface of the upper clamping plate (6) is provided with a plurality of arc-shaped protrusions (61), and the top surface of the lower clamping plate (7) is provided with arc-shaped recesses at positions corresponding to the arc-shaped protrusions (61), and the arc-shaped protrusions match the arc-shaped recesses.

3. A film material tensile testing machine according to claim 2, characterized in that: The height of the arc-shaped protrusion (61) is 5MM-10MM, and a plurality of arc-shaped protrusions are arranged at intervals in front and behind.

4. The film material tensile testing machine according to claim 1, characterized in that: The first clamp (2) has a mounting base (8), the mounting base is provided with a threaded hole threadedly connected to the screw rod (4), and a sliding seat slidably connected to the slide rail (11).

5. The film material tensile testing machine according to claim 1, characterized in that: The driving device comprises a reduction box (9) and a driving motor (10), wherein the driving motor (10) and the reduction box (9) are mounted on the top of the machine body (1), the rotating shaft of the driving motor is connected to the input end of the reduction box, and the output end of the reduction box is connected to the screw.

6. A film material tensile testing machine according to claim 5, characterized in that: The number of the screw rods (4) is two or more, and the screw rods are connected by transmission gears so as to rotate synchronously.

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