A device for detecting scratch resistance of a polypropylene material

Abstract

This application relates to the field of testing equipment technology and discloses a device for testing the scratch resistance of polypropylene materials. The device includes a base, a moving mechanism and a moving block on the upper surface of the base. The moving mechanism can drive the moving block to move back and forth on the upper surface of the base. A lifting plate is connected to the upper surface of the moving block via a lifting mechanism. A sliding needle is fixedly connected to one side of the lower surface of the lifting plate, and the sliding needle is located outside the moving block. The moving mechanism includes a support fixedly installed on the base, and the support seat is configured with a U-shaped structure. A lead screw is rotatably connected inside the support seat. This invention uses the lifting mechanism to adjust the height of the sliding needle, which can accommodate workpieces of different heights. By moving the moving block back and forth through the moving mechanism, the sliding needle moves back and forth on the workpiece surface, thereby achieving the testing of the scratch resistance of polypropylene materials. The device has a compact structure, is flexible in operation, and can meet different testing needs.

Description

Technical Field

[0001] This application relates to the field of testing equipment technology, and in particular to a device for testing the scratch resistance of polypropylene materials. Background Technology

[0002] Polypropylene (PP) materials are widely used in the automotive, home appliance, and packaging industries due to their excellent physical properties, chemical stability, and low cost. However, the surface of PP materials is susceptible to scratch damage, affecting their appearance and performance. This scratch resistance is particularly important in applications requiring high scratch resistance.

[0003] Currently, commonly used methods for testing scratch resistance include the artificial scratch test. The artificial scratch test involves manually applying scratches, but due to variations in the operator's force and angle, the test results are not accurate enough. Therefore, a device for testing the scratch resistance of polypropylene materials is proposed. Utility Model Content

[0004] To address the issue that manual scratch testing, which involves applying scratches manually, yields inaccurate results due to variations in operator force, angle, and other factors, this application provides a device for testing the scratch resistance of polypropylene materials.

[0005] The scratch resistance testing device for polypropylene materials provided in this application adopts the following technical solution:

[0006] A device for testing the scratch resistance of polypropylene material includes a base. A moving mechanism and a moving block are provided on the upper surface of the base. The moving mechanism can drive the moving block to move back and forth on the upper surface of the base. A lifting plate is connected to the upper surface of the moving block through a lifting mechanism. A sliding needle is fixedly connected to one side of the lower surface of the lifting plate. The sliding needle is located outside the moving block.

[0007] Preferably, the moving mechanism includes a support fixedly mounted on a base, the support being configured as a U-shaped structure, a lead screw rotatably connected inside the support, a motor fixedly mounted on the outer surface of the support, the output end of the motor being fixedly connected to one end of the lead screw, a ball bearing seat sleeved on the outer surface of the lead screw, a sliding groove formed on the side wall of the support, and the moving block partially penetrating the sliding groove and being fixedly connected to the ball bearing seat.

[0008] Preferably, the lifting mechanism includes a sleeve embedded inside the movable block, a vertical rod slidably inserted inside the sleeve, the upper end of the vertical rod being located outside the sleeve and fixedly connected to the lifting plate, a spring being sleeved on the outer surface of the vertical rod, the upper end of the spring being fixedly connected to the lifting plate, and the lower end of the spring being fixedly connected to the sleeve.

[0009] Preferably, when the vertical rod is located at the bottom of the sleeve, the sliding pin is in contact with the upper surface of the base.

[0010] Preferably, a fixing bolt is inserted on the other side of the lifting plate, and a threaded hole adapted to the fixing bolt is opened on the upper surface of the moving block.

[0011] In summary, this application includes the following beneficial technical effects:

[0012] This invention uses a lifting mechanism to adjust the height of the sliding needle, which can accommodate workpieces of different heights. The moving mechanism drives the moving block to move back and forth, allowing the sliding needle to move back and forth on the workpiece surface, thereby enabling the testing of the scratch resistance of polypropylene materials. The device has a compact structure, is flexible in operation, and can meet different testing needs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the application embodiment;

[0014] Figure 2 This is a structural schematic diagram from another angle of the application embodiment;

[0015] Figure 3 This is a partial cross-sectional view of an embodiment of the application.

[0016] Explanation of reference numerals in the attached diagram: 1. Base; 2. Support seat; 3. Ball bearing seat; 4. Lead screw; 5. Motor; 6. Slide groove; 7. Moving block; 8. Lifting plate; 9. Sliding needle; 10. Fixing bolt; 11. Threaded hole; 12. Sleeve; 13. Vertical rod; 14. Spring. Detailed Implementation

[0017] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0018] This application discloses a device for testing the scratch resistance of polypropylene materials, including a base 1. A moving mechanism and a moving block 7 are provided on the upper surface of the base 1. The moving mechanism can drive the moving block 7 to move back and forth on the upper surface of the base 1. A lifting plate 8 is connected to the upper surface of the moving block 7 through a lifting mechanism. A sliding needle 9 is fixedly connected to one side of the lower surface of the lifting plate 8. The sliding needle 9 is located outside the moving block 7.

[0019] In this embodiment, the workpiece to be inspected is placed on the upper surface of the base 1, and the height of the lifting plate 8 and the sliding needle 9 is adjusted by the lifting mechanism so that the sliding needle 9 contacts the surface of the workpiece. The moving mechanism is used to drive the moving block 7 and the sliding needle 9 to move back and forth, so that the sliding needle 9 can apply scratches to the surface of the workpiece, thereby realizing automatic scratch detection.

[0020] Furthermore, the moving mechanism includes a support base 2 fixedly connected to the upper surface of the base 1. The support base 2 is configured as a U-shaped structure. A lead screw 4 is rotatably connected inside the support base 2. A motor 5 is fixedly installed on the outer surface of the support base 2. The output end of the motor 5 is fixedly connected to one end of the lead screw 4. A ball bearing seat 3 is sleeved on the outer surface of the lead screw 4. A sliding groove 6 is opened on the side wall of the support base 2. The moving block 7 partially penetrates the sliding groove 6 and is fixedly connected to the ball bearing seat 3.

[0021] In this embodiment, the ball screw is an existing transmission element whose main function is to convert rotary motion into linear motion, which will not be elaborated here. In actual use, the motor 5 needs to be connected to an external power source and driven to rotate forward and backward, so that the ball seat 3 moves back and forth along the screw 4, which can drive the moving block 7 to move back and forth.

[0022] Furthermore, the lifting mechanism includes a sleeve 12 embedded inside the movable block 7, a vertical rod 13 is slidably inserted inside the sleeve 12, the upper end of the vertical rod 13 is located outside the sleeve 12 and is fixedly connected to the lifting plate 8, and a spring 14 is sleeved on the outer surface of the vertical rod 13, the upper end of the spring 14 is fixedly connected to the lifting plate 8, and the lower end of the spring 14 is fixedly connected to the sleeve 12.

[0023] Furthermore, when the vertical rod 13 is located at the bottom of the sleeve 12, the sliding pin 9 contacts the upper surface of the base 1.

[0024] In this embodiment, before scratch detection, the user manually lifts the lifting plate 8 so that the distance between the lower end of the sliding needle 9 and the base 1 is greater than the height of the workpiece. At this time, the spring 14 is compressed. Then the workpiece is placed on the lower surface of the sliding needle 9, the lifting plate 8 is released, the compressed spring 14 is reset, and the lifting plate 8 and the sliding needle 9 are moved down so that the sliding needle 9 contacts the upper surface of the workpiece.

[0025] Furthermore, a fixing bolt 10 is inserted into the other side of the lifting plate 8, and a threaded hole 11 that matches the fixing bolt 10 is opened on the upper surface of the moving block 7.

[0026] In this embodiment, rotating the fixing bolt 10 causes the lower end of the fixing bolt 10 to be screwed into the threaded hole 11, thereby allowing the fixing bolt 10 to abut against the lifting plate 8 and position the lifting plate 8 and the sliding needle 9, making the sliding needle 9 more stable.

[0027] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0028] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0029] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0030] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for detecting the scratch resistance of a polypropylene material, comprising a base (1), characterized in that, The upper surface of the base (1) is provided with a moving mechanism and a moving block (7). The moving mechanism can drive the moving block (7) to move back and forth on the upper surface of the base (1). The upper surface of the moving block (7) is connected to a lifting plate (8) by a lifting mechanism. A sliding pin (9) is fixedly connected to one side of the lower surface of the lifting plate (8). The sliding pin (9) is located outside the moving block (7).

2. The device for testing the scratch resistance of polypropylene material according to claim 1, characterized in that, The moving mechanism includes a support seat (2) fixedly connected to the upper surface of the base (1). The support seat (2) is configured as a U-shaped structure. A lead screw (4) is rotatably connected inside the support seat (2). A motor (5) is fixedly installed on the outer surface of the support seat (2). The output end of the motor (5) is fixedly connected to one end of the lead screw (4). A ball bearing seat (3) is sleeved on the outer surface of the lead screw (4). A sliding groove (6) is opened on the side wall of the support seat (2). The moving block (7) partially penetrates the sliding groove (6) and is fixedly connected to the ball bearing seat (3).

3. The device for testing the scratch resistance of polypropylene material according to claim 2, characterized in that, The lifting mechanism includes a sleeve (12) embedded inside the movable block (7), a vertical rod (13) is slidably inserted inside the sleeve (12), the upper end of the vertical rod (13) is located outside the sleeve (12) and is fixedly connected to the lifting plate (8), a spring (14) is sleeved on the outer surface of the vertical rod (13), the upper end of the spring (14) is fixedly connected to the lifting plate (8), and the lower end of the spring (14) is fixedly connected to the sleeve (12).

4. The device for testing the scratch resistance of polypropylene material according to claim 3, characterized in that, When the vertical rod (13) is located at the bottom inside the sleeve (12), the sliding pin (9) contacts the upper surface of the base (1).

5. The device for testing the scratch resistance of polypropylene material according to claim 4, characterized in that, A fixing bolt (10) is inserted on the other side of the lifting plate (8), and a threaded hole (11) that matches the fixing bolt (10) is opened on the upper surface of the moving block (7).

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