Abrasion resistance testing machine for PET (Polyethylene Terephthalate) film

Abstract

The utility model relates to the technical field of testing equipment, in particular to a PET (Polyethylene Terephthalate) film wear resistance testing machine which comprises a base, supporting legs, mounting assemblies and a polishing assembly, the middle position of the upper end surface of the base is used for connecting the polishing assembly, and the two sides of the polishing assembly are used for arranging the symmetrical mounting assemblies; the mounting assembly comprises a rotating assembly, a moving assembly and a mounting plate, the mounting plate is used for being connected with the protective film, the mounting plate is connected to the moving assembly, and the rotating assembly is used for being connected with the moving assembly. According to the protective film polishing device, the moving assembly can drive the mounting plate to do linear reciprocating motion in the using state, a protective film on the mounting plate slides along the polishing assembly, and when the moving assembly drives the mounting plate to be away from the rotating assembly, the position of the mounting plate changes; the protective film on the mounting plate is gradually changed from the contact of the curved surface part and the polishing assembly to the contact of the straight surface part and the polishing assembly, and the mounting plate has certain pressure to be tightly attached to the polishing assembly by moving a balance weight on the assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of testing equipment, in particular to a PET film wear resistance testing machine. Background Art

[0002] PET protective film is the most common protective film on the market. It has the characteristics of high transparency, high toughness, impact resistance, etc., and can effectively protect the mobile phone screen from being scratched.

[0003] After searching, Chinese patent authorization announcement number CN215374931U discloses a wear resistance testing device for a curved screen mobile phone protective film, including a base, on which a grinding mechanism and a mounting mechanism are arranged, the grinding mechanism includes a support frame, a grinding piece and a driving motor, the mounting mechanism includes a mounting seat, a rotating seat and a film-carrying plate, the rotating seat is rotatably arranged on the mounting seat, a plurality of first placement grooves are arranged on the upper end surface of the rotating seat, the film-carrying plate is fixed on the rotating seat in a detachable manner, the right side of the film-carrying plate extends out of the rotating seat, and the right side surface of the film-carrying plate is provided with an outwardly convex arc surface protruding outwardly. If the curved screen mobile phone protective film is attached to the upper surface, the outward convex arc surface and the lower surface of the film-carrying plate, rotating the rotating seat can make the curved screen mobile phone protective film attached to the outward convex arc surface tangent to the grinding surface of the grinding piece, and the grinding piece is driven to rotate by the driving motor, so that the curved screen mobile phone protective film and the grinding piece are reciprocatedly rubbed, so as to realize the wear resistance testing of the curved surface of the curved surface of the curved screen mobile phone protective film.

[0004] However, in the above technical solution, the polishing operation of the curved surface of the protective film is achieved only by driving the protective film to be close to the polishing piece through the rotating seat. However, when the mobile phone film is tested, only the curved surface of the protective film can be polished, and the straight part of the protective film needs to be polished and tested separately, which increases the steps required for the wear resistance test of the protective film. Utility Model Content

[0005] The utility model aims to provide a PET film wear resistance testing machine in view of the problems existing in the background technology.

[0006] The technical solution of the utility model is as follows: a PET film wear resistance testing machine comprises a base, the bottom surface of which is connected to a plurality of supporting legs; a mounting assembly, which is symmetrically arranged on the base, the mounting assembly comprises a rotating assembly, a moving assembly and a mounting plate, the mounting plate is used to connect the protective film, the mounting plate is connected to the moving assembly, the moving assembly can drive the mounting plate to move back and forth in a straight line when in use, the rotating assembly is used to connect the moving assembly, the moving assembly will drive the rotating assembly to rotate when in use; a polishing assembly, which is arranged between the two mounting assemblies, the polishing assembly is connected to the base, and the polishing assembly is slidably connected to the mounting plate when in use.

[0007] Preferably, the grinding assembly includes two mounting seats symmetrically arranged, the mounting seats are connected to both sides of the base; a grinding roller, both ends of which are rotatably connected to the mounting seats; a first driving device, which is connected to any one of the mounting seats, and the output end of the first driving device is transmission-connected to the grinding roller.

[0008] Preferably, the rotating assembly includes two rotating seats, which are symmetrically arranged and connected to the base; a rotating plate, which is arranged between the rotating seats and is rotatably connected to the rotating seat; a counterweight frame, which is connected to the rotating plate and has an opening; and a counterweight block, which is slidably connected in the counterweight frame.

[0009] Preferably, the moving assembly includes a mounting block connected to the rotating plate; a second drive device connected to one side of the mounting block; a reciprocating screw, one end of which is transmission-connected to the second drive device; a sliding seat threadedly connected to the reciprocating screw; and a guide member connected to the mounting block.

[0010] Preferably, the guide member includes a guide rod and a limit plate, the guide rod is symmetrically arranged on both sides of the reciprocating screw, both ends of the guide rod are respectively connected to the limit plate and the mounting block, and the guide rod is slidably connected to the sliding seat.

[0011] Preferably, a dovetail block is connected to the mounting plate, and the dovetail block is slidably connected to a dovetail groove provided on the sliding seat.

[0012] Preferably, the rotating seats are all connected with angle scale plates.

[0013] Compared with the prior art, the above technical solution of the utility model has the following beneficial technical effects:

[0014] In the utility model, the grinding component can rotate by itself when in use. The rotation of the grinding component causes the grinding medium connected to its outer circumference, such as sandpaper, to rotate and contact with the protective film made of PET film to perform a grinding test. The mounting component includes a rotating component, a moving component and a mounting plate. The mounting plate is tilted. The mounting plate is close to the side of the grinding component for connecting the protective film. The moving component can drive the mounting plate to move back and forth in a straight line when in use. The protective film on the mounting plate slides along the grinding component. The moving component will drive the rotating component to rotate when in use. When the moving component drives the mounting plate away from the rotating component, the position of the mounting plate changes, and the protective film on the mounting plate gradually changes from being in contact with the grinding component at a curved surface to being in contact with the grinding component at a straight surface. The counterweight on the moving component is used to give the mounting plate a certain pressure so that it is tightly attached to the grinding component. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 for Figure 1 A cross-sectional schematic diagram of

[0017] Figure 3 for Figure 2 A magnified view of the structure at A;

[0018] Figure 4 for Figure 2 Enlarged view of the structure at B.

[0019] Figure numerals: 1. base; 2. supporting leg; 3. mounting plate; 4. mounting seat; 5. grinding roller; 6. first driving device; 7. rotating seat; 8. rotating plate; 9. counterweight frame; 10. counterweight block; 11. mounting block; 12. second driving device; 13. reciprocating screw; 14. sliding seat; 15. guide member; 16. guide rod; 17. limit plate; 18. dovetail block; 19. dovetail groove; 20. angle scale plate. DETAILED DESCRIPTION

[0020] Embodiment 1

[0021] like Figure 1-Figure 4 As shown, the utility model proposes a PET film wear resistance tester, including a base 1, support legs 2, a mounting assembly and a polishing assembly. The lower end face of the base 1 is connected to a plurality of support legs 2 that are evenly spaced, and the middle position of the upper end face of the base 1 is used to connect the polishing assembly; the polishing assembly can rotate by itself when in use, and the polishing medium connected to its outer peripheral surface, such as sandpaper, is rotated to contact the protective film made of PET film to perform a polishing test; the two sides of the polishing assembly are used to set symmetrical mounting assemblies; the mounting assembly includes a rotating assembly, a moving assembly and a mounting plate 3, and the mounting plate 3 is used to connect the protective film; the mounting The plate 3 is arranged at an angle, and the side of the mounting plate 3 close to the polishing component is used to connect the protective film; the mounting plate 3 is connected to the moving component; the moving component can drive the mounting plate 3 to move back and forth in a straight line when in use, and the protective film on the mounting plate 3 slides along the polishing component; the rotating component is used to connect the moving component; the moving component will drive the rotating component to rotate when in use, and when the moving component drives the mounting plate 3 away from the rotating component, the position of the mounting plate 3 changes, and the protective film on the mounting plate 3 gradually changes from contacting the polishing component at the curved surface to contacting the polishing component at the straight surface, and the counterweight on the moving component is used to make the mounting plate 3 have a certain pressure to make it close to the polishing component.

[0022] Embodiment 2

[0023] like Figure 1As shown, a PET film wear resistance testing machine proposed by the utility model, compared with the first embodiment, the detailed structure of the grinding component is recorded in this embodiment, and the grinding component includes a mounting seat 4, a grinding roller 5 and a first driving device 6. The mounting seat 4 is symmetrically arranged and connected to both sides of the base 1; the mounting seat 4 is located in the middle position of the base 1, and the two sides of the base 1 are used to set symmetrically arranged mounting components; the two ends of the grinding roller 5 are rotatably connected to the mounting seat 4 through bearings, and any one of the mounting seats 4 is connected to the first driving device 6 away from the grinding roller 5, and the output end of the first driving device 6 is connected to the grinding roller 5.

[0024] Embodiment 3

[0025] like Figure 2-Figure 4 As shown, a PET film wear resistance testing machine proposed by the utility model, compared with the second embodiment, the detailed structure of the rotating component and the moving component is recorded in this embodiment, the rotating component includes a rotating seat 7, a rotating plate 8, a counterweight frame 9 and a counterweight block 10, the two sides of the two mounting seats 4 on the base 1 are used to set the rotating seat 7, the rotating seat 7 is connected to the base 1, and the rotating plate 8 is used to be set between the rotating seats 7; the rotating plate 8 is connected to the rotating shaft, and the two ends of the rotating shaft are connected to the bearings of the rotating seat 7; one side of the rotating plate 8 is used to connect the counterweight frame 9; the counterweight frame 9 is used to slide and connect the counterweight block 10; the counterweight block 10 can be replaced as needed so that the rotating assembly has different pressures on the mounting plate 3.

[0026] The moving assembly includes a mounting block 11, a second driving device 12, a reciprocating screw 13, a sliding seat 14 and a guide member 15. The mounting block 11 is connected to the side of the rotating plate 8 away from the counterweight frame 9, and one side of the mounting block 11 is used to connect the second driving device 12; the second driving device 12 is selected from but not limited to an electric motor; the output end of the second driving device 12 is connected to one end of the reciprocating screw 13, and the other end of the reciprocating screw 13 passes through the through hole on the mounting block 11, the sliding seat 14 is threadedly connected to the reciprocating screw 13, and both sides of the reciprocating screw 13 are used to set the guide members 15.

[0027] In an optional embodiment, the guide member 15 includes a guide rod 16 and a limit plate 17, the guide rod 16 is symmetrically arranged on both sides of the reciprocating screw 13, the two ends of the guide rod 16 are respectively connected to the limit plate 17 and the mounting block 11, and the guide rod 16 is slidably connected to the sliding seat 14; wherein, when the sliding seat 14 on the reciprocating screw 13 moves along the axis of the reciprocating screw 13, the guide rod 16 will limit the rotation of the sliding seat 14 to prevent the sliding seat 14 from rotating with the reciprocating screw 13, and the limit plate 17 can limit the moving range of the sliding seat 14.

[0028] In an optional embodiment, a dovetail block 18 is connected to the mounting plate 3, and the dovetail block 18 is slidably connected to a dovetail groove 19 provided on the sliding seat 14; wherein the dovetail groove 19 does not penetrate the sliding seat 14, and the unpenetrated portion limits the movement of the dovetail block 18 when the dovetail block 18 and the dovetail groove 19 are slidably connected to each other, and when the mounting plate 3 contacts the grinding assembly, it can prevent the mounting plate 3 from moving horizontally and causing the mounting plate 3 and the sliding seat 14 to fall off from each other, and at the same time, a rubber pad is connected to one end of the dovetail block 18, and when the dovetail block 18 is inserted into the dovetail groove 19, the rubber pad can strengthen the connection between the two and further prevent them from falling off.

[0029] In an optional embodiment, an angle scale plate 20 is connected to the rotating seat 7; wherein, the angle scale plate 20 can observe the angle of the current mounting plate 3, and when the protective film on the mounting plate 3 is polished in the initial state of the moving component, the mounting plate 3 and the polishing roller 5 can have different angles by adjusting the moving component, so as to facilitate the polishing of different positions of the protective film.

[0030] In summary, when the present invention is used, the staff pastes and installs the mobile phone protective film on the mounting plate 3, and then connects the mounting plate 3 with the sliding seat 14 through the sliding of the dovetail block 18 and the dovetail groove 19, and the counterweight block 10 is placed in the counterweight frame 9. At this time, the gravity of the counterweight block 10 will cause the rotating plate 8 to rotate to one side so that the mounting plate 3 and the protective film are close to the outer peripheral wall of the grinding roller 5. After starting the first driving device 6 and the second driving device 12, the grinding roller 5 rotates to grind the grinding medium and the protective film adhered to its outer peripheral surface, and at this time, the start-up of the second driving device 12 will cause its output end to drive the reciprocating screw 13 to rotate, and the sliding The seat 14 reciprocates along its own axis and drives the mounting plate 3 to move at the same time. The distance between the mounting plate 3 and the rotating plate 8 increases, so that the angle between the rotating plate 8 and the base 1 gradually changes. The contact surface between the mounting plate 3 and the grinding roller 5 gradually moves from a curved surface to a straight surface, so that multiple positions of the protective film can contact the grinding medium for wear resistance testing. At the same time, since components are provided on both sides, after adjustment by the reciprocating screw 13, the arc surface of one side of the mounting plates 3 on both sides can contact the grinding roller 5, and the straight surface on the other side can contact the grinding roller 5, so that the protective films installed on the mounting components on both sides can grind different parts at the same time, and more data can be obtained in the same time.

[0031] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A PET film wear resistance testing machine, characterized in that, include A base (1), the bottom surface of which is connected to a plurality of supporting legs (2); The mounting assembly is symmetrically arranged on the base (1), and comprises a rotating assembly, a moving assembly and a mounting plate (3). The mounting plate (3) is used to connect the protective film, the mounting plate (3) is connected to the moving assembly, and the moving assembly can drive the mounting plate (3) to move linearly back and forth when in use. The rotating assembly is used to connect the moving assembly, and the moving assembly can drive the rotating assembly to rotate when in use. A grinding component is arranged between the two mounting components. The grinding component is connected to the base (1). When in use, the grinding component is slidably connected to the mounting plate (3).

2. A PET film wear resistance testing machine according to claim 1, characterized in that, Grinding kit includes Two mounting seats (4) are symmetrically arranged, and the mounting seats (4) are connected to both sides of the base (1); A grinding roller (5), both ends of which are rotatably connected to a mounting seat (4); A first driving device (6) is connected to any one of the mounting seats (4), and an output end of the first driving device (6) is drivingly connected to the grinding roller (5).

3. A PET film wear resistance testing machine according to claim 1, characterized in that, The rotating assembly includes Two rotating seats (7) are symmetrically arranged, and the rotating seats (7) are connected to the base (1); A rotating plate (8) is arranged between the rotating seats (7), and the rotating plate (8) is rotatably connected to the rotating seats (7); A counterweight frame (9) is connected to the rotating plate (8), and an opening is formed on the counterweight frame (9); The counterweight block (10) is slidably connected in the counterweight frame (9).

4. A PET film wear resistance testing machine according to claim 3, characterized in that: Mobile components include A mounting block (11) connected to the rotating plate (8); A second driving device (12) connected to one side of the mounting block (11); A reciprocating screw (13), one end of which is drivingly connected to the second driving device (12); A sliding seat (14) threadedly connected to the reciprocating screw (13); A guide member (15) is connected to the mounting block (11).

5. A PET film wear resistance testing machine according to claim 4, characterized in that: The guide member (15) comprises a guide rod (16) and a limit plate (17). The guide rod (16) is symmetrically arranged on both sides of the reciprocating screw rod (13). The two ends of the guide rod (16) are respectively connected to the limit plate (17) and the mounting block (11). The guide rod (16) is slidably connected to the sliding seat (14).

6. A PET film wear resistance testing machine according to claim 4, characterized in that: A dovetail block (18) is connected to the mounting plate (3), and the dovetail block (18) is slidably connected to a dovetail groove (19) provided on the sliding seat (14).

7. A PET film wear resistance testing machine according to claim 3, characterized in that: The rotating seats (7) are all connected with angle scale plates (20).

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