Plastic durometer capable of rapidly detecting hardness

Abstract

The utility model belongs to the technical field of durometers, and particularly relates to a plastic durometer capable of rapidly detecting hardness, which comprises a base, a placing table is welded at the top of the base, a screw rod is rotatably connected between the inner walls of two sides of the base, and the screw rod is in threaded connection with a moving plate. Plastic is placed on a placing table, a first driving motor is started, the first driving motor drives a first gear to rotate through a second gear, the first gear drives a lead screw to rotate, the lead screw drives a movable plate to slide on a limiting groove, and the movable plate extrudes a hinge rod in the moving process; the hinge rods drive the corresponding L-shaped plates to slide on the guide rods and stretch the springs, the L-shaped plates drive the corresponding clamping plates to move, and plastic is fixed through the two clamping plates, so that when an object is detected and is separated from the ejector pin, the object cannot be clamped on the ejector pin due to the tension of the material, and the detection accuracy is improved. And the device can be quickly separated from the test material without obstruction after the detection is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of hardness testers, in particular to a plastic hardness tester for quickly detecting hardness. Background Art

[0002] A durometer is a hardness testing instrument. The first hardness test for metals was proposed by Leo Murray, who defined hardness as a measure of plastic's resistance to a hard object pressing into its surface. It is one of the most important performance indicators of metal plastics. Generally, the higher the hardness, the better the wear resistance.

[0003] China's publicly authorized invention: CN214224827U discloses a plastic hardness tester for quickly detecting hardness, comprising a base, a support platform installed on the top of the base, and a controller installed on one side of the base, a support frame fixedly connected to the top of the base near the support platform, an electric push rod fixedly connected to one side of the support frame, a moving rod installed on the top of the electric push rod, a connecting rod installed inside the support frame, and a linkage rod fixedly connected between the connecting rod and the moving rod. The utility model drives the moving rod to move by the electric push rod, so that the moving rod drives the linkage rod to move, thereby driving the connecting rod to move, so that the connecting rod drives the hardness tester body to move, so that the hardness tester body is pressed against the plastic to be tested. When the user needs to test multiple plastics, the device does not need to be pressed manually, which greatly reduces the user's workload and improves the efficiency of plastic testing.

[0004] However, the device still has certain problems. In actual use, when measuring, especially when the measured object is a plastic material with a certain degree of elasticity or viscosity, the ejector pin may adhere to the test material due to the tension or viscosity of the material itself after the hardness test is completed, making it difficult for the ejector pin to smoothly separate from the test surface. This phenomenon not only prolongs the test cycle and reduces the test efficiency, but may also cause unnecessary damage to the measuring head and test material due to repeated operations, affecting the accuracy and consistency of the measurement results. Therefore, we have proposed a plastic hardness tester with rapid hardness detection to solve the above problems. Utility Model Content

[0005] (1) Technical problems solved

[0006] In view of the deficiencies in the prior art, the present invention provides a plastic hardness tester for rapidly detecting hardness, which solves the problems raised in the above-mentioned background technology.

[0007] (2) Technical solution

[0008] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0009] A plastic hardness tester for quickly detecting hardness comprises a base, a placing platform welded to the top of the base, a screw rod rotatably connected between the inner walls of both sides of the base, a movable plate threadedly connected to the screw rod, a limit slot is provided on the left inner wall and the right inner wall of the base, the limit slot is slidably connected to the movable plate, the screw rod is fixedly connected to a first gear, a first drive motor is fixedly connected to the top inner wall of the base, the output end of the first drive motor is fixedly connected to a second gear, the second gear is meshed with the first gear, the top of the movable plate is rotatably connected to two obliquely arranged hinged rods, the ends of the hinged rods are hingedly connected to an L-shaped plate, two rectangular holes are provided on the top inner wall of the base, two guide rods are welded between the inner walls of both sides of the rectangular hole, the guide rods are slidably connected to the corresponding L-shaped plates, two springs are welded between one side of the L-shaped plate and the inner wall of one side of the corresponding rectangular hole, the spring is movably sleeved on the corresponding guide rod, and a splint is welded on the other side of the L-shaped plate.

[0010] Furthermore, a vertical plate is welded to the top of the base, and a second drive motor is fixedly connected to the top of the vertical plate.

[0011] Furthermore, a mounting hole is opened on the vertical plate, and a screw is rotatably connected between the inner walls on both sides of the mounting hole. The end of the screw extends to the top of the vertical plate and is fixedly connected to the output shaft of the second drive motor.

[0012] Furthermore, a connecting block is threadedly connected to the screw rod, a hardness tester body is fixedly connected to one side of the connecting block, and the connecting block is slidably connected to the mounting hole.

[0013] Furthermore, four suction cups are fixedly connected to the bottom of the base.

[0014] Furthermore, a threaded hole is provided on the movable plate, and the movable plate is threadedly connected to the screw rod through the threaded hole.

[0015] (3) Beneficial effects

[0016] Compared with the existing technology, the present invention provides a plastic hardness tester for rapid hardness detection, which has the following beneficial effects:

[0017] The utility model places the plastic on the placing table and starts the first driving motor, which drives the first gear to rotate through the second gear, which drives the screw to rotate, which drives the movable plate to slide on the limiting groove, and the movable plate squeezes the hinge rod during the movement, and under the action of the squeezing force, the hinge rod moves and rotates, and the hinge rod drives the corresponding L-shaped plate to slide on the guide rod and stretch the spring, and the L-shaped plate drives the corresponding clamping plate to move, and the plastic is fixed by the two clamping plates. In this way, when the object is separated from the ejector pin after the inspection is completed, it will not be stuck on the ejector pin due to the tension of the material, and can be quickly and unhinderedly separated from the test material after the inspection is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the cutaway three-dimensional structure of the base of the utility model;

[0020] Figure 3 For this utility model Figure 2 Schematic diagram of the three-dimensional structure of the bottom of the middle base;

[0021] Figure 4 It is a schematic diagram of the partial three-dimensional structure of the utility model.

[0022] In the figure: 1. Base; 2. Placement table; 3. Screw; 4. Moving plate; 5. Limiting groove; 6. First gear; 7. First drive motor; 8. Second gear; 9. Articulated rod; 10. L-shaped plate; 11. Rectangular hole; 12. Guide rod; 13. Spring; 14. Clamp; 15. Vertical plate; 16. Second drive motor; 17. Mounting hole; 18. Screw; 19. Connecting block; 20. Hardness tester body; 21. Suction cup. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Example

[0025] like Figure 1-4As shown, a plastic hardness tester for quickly detecting hardness proposed in an embodiment of the present invention includes a base 1, a placing table 2 is welded on the top of the base 1, a screw rod 3 is rotatably connected between the inner walls on both sides of the base 1, a movable plate 4 is threadedly connected to the screw rod 3, a limiting groove 5 is provided on the left inner wall and the right inner wall of the base 1, the limiting groove 5 is slidably connected to the movable plate 4, a first gear 6 is fixedly connected to the screw rod 3, a first driving motor 7 is fixedly connected to the top inner wall of the base 1, the output end of the first driving motor 7 is fixedly connected to the second gear 8, the second gear 8 is meshed with the first gear 6, the top of the movable plate 4 is rotatably connected to two obliquely arranged hinged rods 9, the end of the hinged rod 9 is hingedly connected to an L-shaped plate 10, two rectangular holes 11 are provided on the top inner wall of the base 1, two guide rods 12 are welded between the inner walls on both sides of the rectangular hole 11, the guide rods 12 are slidably connected to the corresponding L-shaped plates 10, the L-shaped plates 10 Two springs 13 are welded between one side and the inner wall of one side of the corresponding rectangular hole 11. The spring 13 is movably mounted on the corresponding guide rod 12. A splint 14 is welded on the other side of the L-shaped plate 10. The plastic is placed on the placement table 2 and the first drive motor 7 is started. The first drive motor 7 drives the first gear 6 to rotate through the second gear 8. The first gear 6 drives the screw rod 3 to rotate, and the screw rod 3 drives the movable plate 4 to slide on the limit groove 5. The movable plate 4 squeezes the hinged rod 9 during the movement. Under the action of the extrusion force, the hinged rod 9 moves and rotates, and the hinged rod 9 drives the corresponding L-shaped plate 10 to slide on the guide rod 12 and stretch the spring 13. The L-shaped plate 10 drives the corresponding splint 14 to move, and the plastic is fixed by the two splints 14. In this way, when the object completes the inspection and is separated from the ejector pin, it will not be stuck on the ejector pin due to material tension, and can be quickly and unimpededly separated from the test material after the inspection is completed.

[0026] In some embodiments, a vertical plate 15 is welded to the top of the base 1 , and a second drive motor 16 is fixedly connected to the top of the vertical plate 15 .

[0027] In some embodiments, a mounting hole 17 is opened on the vertical plate 15, and a screw 18 is rotatably connected between the inner walls on both sides of the mounting hole 17. The end of the screw 18 extends to the top of the vertical plate 15 and is fixedly connected to the output shaft of the second drive motor 16.

[0028] In some embodiments, a connecting block 19 is threadedly connected to the screw rod 18, a hardness tester body 20 is fixedly connected to one side of the connecting block 19, and the connecting block 19 is slidably connected to the mounting hole 17. The setting of the connecting block 19 plays a connecting role.

[0029] In some embodiments, four suction cups 21 are fixedly connected to the bottom of the base 1 .

[0030] In some embodiments, a threaded hole is provided on the movable plate 4, and the movable plate 4 is threadedly connected to the screw rod 3 through the threaded hole. Under the bite force of the threaded hole and the screw rod 3 itself, the movable plate 4 can be fixed after moving to a suitable position.

[0031] Working principle or structural principle: when in use, the base 1 is fixed by the suction cup 21, the plastic is placed on the placement table 2, and the first drive motor 7 is started. The first drive motor 7 drives the first gear 6 to rotate through the second gear 8, and the first gear 6 drives the screw 3 to rotate. The screw 3 drives the movable plate 4 to slide on the limit groove 5. The movable plate 4 squeezes the hinge rod 9 during the movement. Under the action of the squeezing force, the hinge rod 9 moves and rotates. The hinge rod 9 drives the corresponding L-shaped plate 10 to slide on the guide rod 12 and stretch the spring 13. The L-shaped plate 10 drives the corresponding clamping plate 14 to move, and the plastic is fixed by the two clamping plates 14. In this way, when the object is completed and separated from the ejector pin, it will not be stuck on the ejector pin due to material tension and cannot be separated. After fixation, the second drive motor 16 is started, and the second drive motor 16 drives the screw 18 to rotate. The screw 18 drives the hardness tester body 20 to move downward through the connecting block 19, so that the hardness tester body 20 squeezes the plastic. By observing the pointer of the hardness tester body 20, the current hardness of the plastic can be known.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A plastic hardness tester for rapid hardness detection, comprising a base (1), characterized in that: A placing table (2) is welded to the top of the base (1), a screw rod (3) is rotatably connected between the inner walls on both sides of the base (1), a movable plate (4) is threadedly connected to the screw rod (3), a limiting groove (5) is provided on the left inner wall and the right inner wall of the base (1), the limiting groove (5) is slidably connected to the movable plate (4), a first gear (6) is fixedly connected to the screw rod (3), a first driving motor (7) is fixedly connected to the top inner wall of the base (1), a second gear (8) is fixedly connected to the output end of the first driving motor (7), the second gear (8) is meshed with the first gear (6), and the movable plate ( The top of the base (4) is rotatably connected to two tilted hinged rods (9), the ends of the hinged rods (9) are hingedly connected to an L-shaped plate (10), two rectangular holes (11) are opened on the top inner wall of the base (1), two guide rods (12) are welded between the inner walls on both sides of the rectangular hole (11), the guide rods (12) are slidably connected to the corresponding L-shaped plate (10), two springs (13) are welded between one side of the L-shaped plate (10) and the inner wall of one side of the corresponding rectangular hole (11), the springs (13) are movably sleeved on the corresponding guide rods (12), and a clamping plate (14) is welded on the other side of the L-shaped plate (10).

2. A plastic hardness tester for rapid hardness detection according to claim 1, characterized in that: A vertical plate (15) is welded to the top of the base (1), and a second drive motor (16) is fixedly connected to the top of the vertical plate (15).

3. A plastic hardness tester for rapid hardness detection according to claim 2, characterized in that: A mounting hole (17) is provided on the vertical plate (15), and a screw rod (18) is rotatably connected between the inner walls on both sides of the mounting hole (17). The end of the screw rod (18) extends to the top of the vertical plate (15) and is fixedly connected to the output shaft of the second drive motor (16).

4. A plastic hardness tester for rapid hardness detection according to claim 3, characterized in that: A connecting block (19) is threadedly connected to the screw rod (18), a hardness tester body (20) is fixedly connected to one side of the connecting block (19), and the connecting block (19) is slidably connected to the mounting hole (17).

5. A plastic hardness tester for rapid hardness detection according to claim 1, characterized in that: Four suction cups (21) are fixedly connected to the bottom of the base (1).

6. A plastic hardness tester for rapid hardness detection according to claim 1, characterized in that: A threaded hole is provided on the movable plate (4), and the movable plate (4) is threadedly connected to the screw rod (3) through the threaded hole.

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