Plastic tension testing machine

Abstract

The utility model relates to the technical field of plastic testing, and discloses a plastic tension testing machine which comprises a base, a tension meter is mounted above the base, a lifting mechanism for driving the tension meter to lift is arranged on the upper surface of the base, and positioning mechanisms are arranged on the upper surface of the base and located on the front side of the lifting mechanism and at the tension end of the tension meter. The positioning mechanism comprises a positioning seat, two positioning rods are symmetrically connected to the upper surface of the positioning seat in a penetrating and sliding mode, a positioning plate is installed at the upper ends of the positioning rods, and a positioning piece is arranged in the positioning seat; according to the plastic clamping device, the positioning mechanism is arranged, a second motor in the positioning mechanism is started to drive a mounting disc to rotate, two arc-shaped rods drive two positioning rods to be folded, and therefore two positioning plates are driven to clamp plastic, clamping of the plastic can be rapidly achieved, tedious manual operation is avoided, the positioning plates are located on the front side of the plastic, and the clamping efficiency is improved. And the situation that workers are hurt by plastic residues generated when the plastic is broken can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic testing, in particular to a plastic tensile testing machine. Background Art

[0002] Plastic materials are widely used in modern industry and daily life due to their advantages such as light weight, corrosion resistance, easy processing and low cost. Therefore, ensuring the performance and quality of plastic materials and their products is crucial, as this is directly related to the product's service life, safety and market competitiveness. This requires tensile testing.

[0003] Most existing tensile testing machines do not have protective functions. When personnel place plastic, rubber and other products on the tensile tester and tighten them for testing, the broken plastic products may be affected by the force and cause a fracture. If personnel are observing and recording, it may cause harm to the experimenter.

[0004] A Chinese patent discloses a tensile testing mechanism for plastic production (authorization publication number CN221350976U). This patented technology starts a motor to drive the screw to rotate, causing the sleeve to produce vertical displacement. This in turn drives the adjacent clamping parts to move through the connecting block to perform a tensile test on the plastic product. When the sleeve is lifted vertically, it also drives the limit block and the upper baffle to follow it through the fixed clamping block. This allows the plastic being tested to be lifted while the upper baffle is lifted, protecting personnel and equipment, reducing safety hazards, and improving the practicality of the testing mechanism.

[0005] However, it has certain disadvantages: it is necessary to manually turn the bolts in the clamp to fix the plastic, which is cumbersome to operate, and manual operation requires the operator to apply continuous force, which increases the operator's labor intensity. Long-term manual operation can easily lead to operator fatigue and even cause occupational diseases. Utility Model Content

[0006] The purpose of the present invention is to provide a plastic tensile testing machine to solve the problems raised in the above background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] A plastic tensile testing machine includes a base, a tensile gauge is installed above the base, and a lifting mechanism is provided on the upper surface of the base to drive the tensile gauge to rise and fall. The upper surface of the base is located in front of the lifting mechanism and the tensile end of the tensile gauge is provided with a positioning mechanism, and the positioning mechanism includes a positioning seat, and the upper surface of the positioning seat is symmetrically penetrated by two positioning rods in sliding connection, the upper end of the positioning rod is installed with a positioning plate, and a positioning piece is provided inside the positioning seat.

[0009] As a further solution of the present invention: the lifting mechanism includes a support plate, a first motor is installed on the upper surface of the support plate, a threaded rod is installed on the output end of the first motor, the external thread of the threaded rod is connected to a lifting block, and the interior of the lifting block is located at the front and rear sides of the threaded rod and is movably connected to the support rod.

[0010] As a further solution of the present invention: the positioning member includes a mounting plate, a second motor is installed on the upper surface of the mounting plate, a mounting disk is installed at the output end of the second motor, and arc rods are rotatably connected to the left and right ends of the outer edge of the mounting disk, and one end of the arc rod is rotatably connected to the mounting block.

[0011] As a further solution of the present invention: a baffle is installed at the right corner of the front end of the upper surface of the base, and a baffle is rotatably connected to the outside of the baffle.

[0012] As a further solution of the present invention: the rear end of the upper positioning seat is connected to the tension end of the dynamometer, and the lower positioning seat is installed on the upper surface of the base.

[0013] As a further solution of the present invention: the lower end of the threaded rod is rotatably connected to the upper surface of the base, the front end of the lifting block is connected to the dynamometer, and the lower end of the support rod is installed on the upper surface of the base.

[0014] As a further solution of the present invention: the ends of the mounting plate are mounted on the left and right inner surfaces of the positioning seat, and the lower end of the positioning rod is mounted on the upper surface of the mounting block.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The utility model is provided with a positioning mechanism. The second motor in the positioning mechanism is turned on to drive the mounting plate to rotate, so that the two arc-shaped rods drive the two positioning rods to close, thereby driving the two positioning plates to clamp the plastic. The plastic can be clamped quickly, avoiding the tedious manual operation.

[0017] 2. The utility model can prevent the plastic residue from causing harm to the workers when the plastic breaks by rotating the baffle so that it is located in front of the plastic. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of a plastic tensile testing machine;

[0019] Figure 2 This is a structural diagram of a positioning mechanism in a plastic tensile testing machine;

[0020] Figure 3This is a structural diagram of a positioning part in a plastic tensile testing machine.

[0021] In the figure: 1. Base; 2. Tension gauge; 3. Lifting mechanism; 4. Support plate; 5. First motor; 6. Threaded rod; 7. Lifting block; 8. Support rod; 9. Positioning mechanism; 10. Positioning seat; 11. Positioning rod; 12. Positioning plate; 13. Positioning member; 14. Mounting plate; 15. Second motor; 16. Mounting plate; 17. Arc rod; 18. Mounting block; 19. Stop rod; 20. Baffle. DETAILED DESCRIPTION

[0022] See also Figures 1 to 3 In the embodiment of the present invention, a plastic tensile testing machine includes a base 1, a tensile gauge 2 is installed above the base 1, and a lifting mechanism 3 for driving the tensile gauge 2 to rise and fall is provided on the upper surface of the base 1, the lifting mechanism 3 includes a support plate 4, a first motor 5 is installed on the upper surface of the support plate 4, a threaded rod 6 is installed on the output end of the first motor 5, the lower end of the threaded rod 6 is rotatably connected to the upper surface of the base 1, the external thread of the threaded rod 6 is connected to a lifting block 7, the front end of the lifting block 7 is connected to the tensile gauge 2, the interior of the lifting block 7 is located at the front and rear sides of the threaded rod 6 and is movably connected with a support rod 8, the lower end of the support rod 8 is installed on the upper surface of the base 1, the upper surface of the base 1 is located at the front side of the lifting mechanism 3 and the tensile end of the tensile gauge 2, the positioning mechanism 9 It includes a positioning seat 10, the rear end of the upper positioning seat 10 is connected to the tension end of the dynamometer 2, and the lower positioning seat 10 is installed on the upper surface of the base 1. The upper surface of the positioning seat 10 is symmetrically penetrated and slidably connected with two positioning rods 11, and the upper end of the positioning rod 11 is installed with a positioning plate 12. A positioning member 13 is provided inside the positioning seat 10, and the positioning member 13 includes a mounting plate 14. The end portions of the mounting plate 14 are installed on the left and right side surfaces of the interior of the positioning seat 10, and a second motor 15 is installed on the upper surface of the mounting plate 14. A mounting disk 16 is installed at the output end of the second motor 15. The left and right ends of the outer edge of the mounting disk 16 are rotatably connected to the inside with an arc rod 17, and one end of the arc rod 17 is rotatably connected to a mounting block 18. The lower end of the positioning rod 11 is installed on the upper surface of the mounting block 18;

[0023] Tensile gauge 2 is used to display the tensile force value during plastic testing;

[0024] The first motor 5 is connected to the forward and reverse circuit, which drives the threaded rod 6 to rotate, and the lifting block 7 drives the tensile gauge 2 to rise and fall, thereby performing a tensile test;

[0025] The second motor 15 is connected to the forward and reverse circuit and is self-locking, that is, the motor shaft cannot rotate after power is cut off;

[0026] When the mounting plate 16 rotates clockwise, the two arc-shaped rods 17 will open, and the two positioning rods 11 will drive the positioning plates 12 apart; when the mounting plate 16 rotates counterclockwise, the two arc-shaped rods 17 will close, and the two positioning rods 11 will drive the positioning plates 12 closer, thereby clamping and fixing the plastic.

[0027] exist Figure 1 Middle: A baffle 19 is installed at the right corner of the front end of the upper surface of the base 1, and a baffle 20 is rotatably connected to the outside of the baffle 19;

[0028] The material of the baffle 20 is preferably colorless and transparent acrylic;

[0029] By rotating the baffle 20 so that it is located in front of the dynamometer 2, the plastic can be shielded to prevent the broken plastic residue from causing harm to the workers.

[0030] The working principle of the present utility model is as follows: when in use, the lower end of the plastic is placed between the two positioning plates 12, the second motor 15 is turned on to drive the mounting plate 16 to rotate counterclockwise, and the two arc-shaped rods 17 will drive the two mounting blocks 18 to close, thereby fixing the lower end of the plastic through the two mounting blocks 18; then, the upper end of the plastic is placed between the two positioning plates 12 and fixed in the same manner as above; after the fixing is completed, the staff rotates the baffle 20 so that it is located in front of the plastic; the first motor 5 is turned on to drive the threaded rod 6 to rotate, and the lifting block 7 will drive the dynamometer 2 to rise, thereby pulling the plastic upward, and then performing a tensile test on the plastic.

[0031] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0032] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

Claims

1. A plastic tensile testing machine, comprising a base (1), a tensile gauge (2) being mounted above the base (1), and a lifting mechanism (3) for driving the tensile gauge (2) to move up and down being provided on the upper surface of the base (1), characterized in that: The upper surface of the base (1) is provided with a positioning mechanism (9) located at the front side of the lifting mechanism (3) and the tension end of the tension meter (2). The positioning mechanism (9) includes a positioning seat (10). Two positioning rods (11) are symmetrically penetrated and slidably connected to the upper surface of the positioning seat (10). A positioning plate (12) is installed at the upper end of the positioning rod (11). A positioning member (13) is provided inside the positioning seat (10).

2. A plastic tensile testing machine according to claim 1, characterized in that: The lifting mechanism (3) comprises a support plate (4), a first motor (5) is mounted on the upper surface of the support plate (4), a threaded rod (6) is mounted on the output end of the first motor (5), an external thread of the threaded rod (6) is connected to a lifting block (7), and the interior of the lifting block (7) is movably connected to a support rod (8) located at both the front and rear sides of the threaded rod (6).

3. A plastic tensile testing machine according to claim 1, characterized in that: The positioning member (13) includes a mounting plate (14), a second motor (15) is mounted on the upper surface of the mounting plate (14), a mounting plate (16) is mounted on the output end of the second motor (15), and an arc-shaped rod (17) is rotatably connected to the inside of both left and right ends of the outer edge of the mounting plate (16), and one end of the arc-shaped rod (17) is rotatably connected to a mounting block (18).

4. A plastic tensile testing machine according to claim 1, characterized in that: A baffle (19) is installed at the right corner of the front end of the upper surface of the base (1), and a baffle (20) is rotatably connected to the outside of the baffle (19).

5. A plastic tensile testing machine according to claim 1, characterized in that: The rear end of the upper positioning seat (10) is connected to the tension end of the tension meter (2), and the lower positioning seat (10) is installed on the upper surface of the base (1).

6. A plastic tensile testing machine according to claim 2, characterized in that: The lower end of the threaded rod (6) is rotatably connected to the upper surface of the base (1), the front end of the lifting block (7) is connected to the dynamometer (2), and the lower end of the support rod (8) is installed on the upper surface of the base (1).

7. A plastic tensile testing machine according to claim 3, characterized in that: The ends of the mounting plate (14) are mounted on the inner left and right side surfaces of the positioning seat (10), and the lower end of the positioning rod (11) is mounted on the upper surface of the mounting block (18).

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