Wear-resistant molding sand paper sheet

Abstract

The utility model relates to the technical field of abrasive paper sheets, in particular to a wear-resistant molding sand paper sheet, which comprises an abrasive paper sheet, a side wall surface arranged at the side end of the abrasive paper sheet, a side wear-resistant layer arranged on the side wall surface, a bottom wear-resistant layer and a bonding fixing layer arranged on the abrasive paper sheet, a mounting cylinder arranged on the bonding fixing layer, and a mounting top seat arranged above the abrasive paper sheet, a mounting stud is arranged on the mounting cylinder, a reinforcing retaining ring is arranged on the abrasive paper sheet, a bearing inclined block is arranged on the reinforcing retaining ring, a positioning clamping groove is formed in the mounting stud, a mounting screw groove and an embedded groove are formed in the mounting cylinder, a threaded hole is formed in the embedded groove, a positioning screw pin is arranged in the threaded hole, and a cutter clamping groove and a pressing head are arranged on the positioning screw pin. The abrasion resistance of the grinding surface and the side wall face of the abrasive paper sheet is improved, the bending deformation resistance and the fracture resistance of the whole abrasive paper sheet are improved, and the situation that the installation position is loosened when the abrasive paper sheet is used for grinding is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of abrasive paper sheets, in particular to an abrasion-resistant abrasive paper sheet. Background Art

[0002] An abrasive paper sheet is a common industrial and household item. Among them, the abrasive paper sheet commonly used on a handheld grinder is generally in the shape of a circular thin sheet.

[0003] Currently, a preset motor on a handheld grinder drives the abrasive paper sheet to rotate at a high speed, and then the handheld grinder is held to grind the circular thin abrasive paper sheet against the grinding surface. However, for the circular thin abrasive paper sheet used on the existing handheld grinder, the abrasion resistance of its grinding surface and side wall surface is relatively weak;

[0004] Moreover, for the circular thin abrasive paper sheet used on the existing handheld grinder, since it is in the shape of a circular thin sheet, it is prone to deformation, bending or even breaking when it is collided on the side.

[0005] In addition, for the circular thin abrasive paper sheet used on the existing handheld grinder, it is generally only installed at the central part with a preset installation stud and an installation nut on the installation top seat of the handheld grinder. This installation method is prone to loosening of the installation part when the abrasive paper sheet rotates at a high speed for a long time for grinding. Summary of the Utility Model

[0006] The purpose of the utility model is to solve the above-mentioned disadvantages in the prior art, and to provide an abrasion-resistant abrasive paper sheet.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] Design an abrasion-resistant abrasive paper sheet, including an abrasive paper sheet. A side wall surface is provided at the side end of the abrasive paper sheet, and a side anti-abrasion layer is provided on the side wall surface. A bottom anti-abrasion layer and an adhesive fixing layer are provided on the abrasive paper sheet. An installation cylinder is provided on the adhesive fixing layer. An installation top seat is provided above the abrasive paper sheet, and an installation stud is provided on the installation cylinder;

[0009] A strengthening protection ring is provided on the abrasive paper sheet, and a supporting inclined block is arranged on the strengthening protection ring;

[0010] A positioning card slot is opened on the installation stud. An installation thread groove and an embedded groove are opened on the installation cylinder. A threaded hole is opened on the embedded groove, and a positioning pin is arranged in the threaded hole. A cutter card slot and a pressing head are arranged on the positioning pin.

[0011] Further, the bottom anti-wear layer is evenly coated along the lower end surface of the abrasive paper sheet, and the side anti-wear layer is evenly coated along the outer side wall surface of the side wall. Both the bottom anti-wear layer and the side anti-wear layer are CBN cubic boron nitride coatings, and the thicknesses of both the bottom anti-wear layer and the side anti-wear layer are 15 to 20 microns.

[0012] Further, the top views of the bonding and fixing layer and the mounting cylinder are both circular cross-sections, and the center of the circular cross-section of the bonding and fixing layer in the top view is concentric with the center of the circular cross-section of the abrasive paper sheet in the top view.

[0013] Further, the reinforcing protection ring is arranged along the top surface of the abrasive paper sheet. The reinforcing protection ring is an overall circular ring structure. The included angle between the supporting inclined block and the horizontal plane is 27 degrees and there are 40 arranged in a circular pattern. Both ends of the supporting inclined block are fixedly arranged on the inner wall surface of the reinforcing protection ring and the top surface of the abrasive paper sheet respectively.

[0014] Further, the positioning screw pin and the positioning card slot are a set, and there are two sets symmetrically arranged in total. The positioning screw pin is threadedly connected to the threaded hole and is clamped in the positioning card slot. The positioning screw pin is not higher than the embedded slot.

[0015] Further, the cutter card slot is a cross-shaped groove, and the pressing head is in pressing contact with the inner groove wall of the positioning card slot.

[0016] Further, the mounting stud is threadedly connected to the mounting thread groove, and the vertical length dimension of the mounting stud is not less than the vertical depth dimension of the mounting thread groove.

[0017] A wear-resistant abrasive paper sheet proposed by the present utility model has the following beneficial effects:

[0018] 1. By providing a bottom anti-wear layer structure on the lower end surface of the abrasive paper sheet and a side anti-wear layer structure on the side wall surface of the abrasive paper sheet, the present utility model improves the anti-wear and abrasion resistance of the grinding surface and the side wall surface of the abrasive paper sheet.

[0019] 2. By providing a reinforcing protection ring on the top surface of the abrasive paper sheet and arranging an inclined supporting inclined block structure in a circular pattern on the reinforcing protection ring, the present utility model effectively avoids the situation that the abrasive paper sheet is deformed, bent or even broken due to side collisions, and improves the anti-bending deformation and breakage resistance of the whole abrasive paper sheet.

[0020] 3. By providing a bonding and fixing layer with a mounting cylinder on the abrasive paper sheet, then symmetrically opening an embedded slot with a threaded hole on the mounting cylinder, and providing a matching positioning screw pin with a pressing head, the present utility model realizes stable threaded installation of the mounting stud and a preset mounting cylinder, then symmetrically clamps and positions the mounting stud, and at the same time has a thread anti-loosening effect on the positioning screw pin, effectively avoiding the loosening of the installation part during the grinding of the abrasive paper sheet. Description of the Drawings

[0021] Figure 1 This is an exploded schematic view of the overall structure of the present utility model;

[0022] Figure 2 This is a three-dimensional installation schematic view of the overall structure of the present utility model;

[0023] Figure 3 This is the Figure 1 three-dimensional schematic view of the upward view surface of the medium abrasive paper sheet of the present utility model;

[0024] Figure 4 This is the Figure 1 three-dimensional schematic view of the positioning pin of the present utility model;

[0025] Figure 5 This is the Figure 2 side perspective schematic view of the overall structure of the present utility model.

[0026] In the figure: 1 abrasive paper sheet; 10 bottom wear-resistant layer; 11 bonding and fixing layer; 2 side wall surface; 21 side wear-resistant layer; 3 strengthening protective ring; 31 supporting inclined block; 4 installation cylinder; 41 installation screw groove; 5 embedded groove; 51 threaded hole; 6 positioning pin; 61 cutter slot; 62 pressing head; 7 installation top seat; 71 installation stud; 72 positioning card slot. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0028] Referring to Figures 1-5 , a wear-resistant abrasive paper sheet includes an abrasive paper sheet 1. A side wall surface 2 is provided at the side end of the abrasive paper sheet 1. A side wear-resistant layer 21 is provided on the side wall surface 2. A bottom wear-resistant layer 10 and a bonding and fixing layer 11 are provided on the abrasive paper sheet 1. An installation cylinder 4 is provided on the bonding and fixing layer 11. An installation top seat 7 is provided above the abrasive paper sheet 1. An installation stud 71 is provided on the installation cylinder 4;

[0029] A strengthening protective ring 3 is provided on the abrasive paper sheet 1, and a supporting inclined block 31 is arranged on the strengthening protective ring 3;

[0030] A positioning card slot 72 is opened on the installation stud 71. An installation screw groove 41 and an embedded groove 5 are opened on the installation cylinder 4. A threaded hole 51 is opened on the embedded groove 5. A positioning pin 6 is arranged in the threaded hole 51. A cutter slot 61 and a pressing head 62 are provided on the positioning pin 6. The abrasive paper sheet 1 is a circular thin abrasive paper sheet used on a handheld grinding machine, and the installation top seat 7 is the installation part structure on the handheld grinding machine, which are all prior arts. Some prior structures are not drawn and marked, so there is no need to elaborate.

[0031] The bottom anti-wear layer 10 is evenly coated along the lower end surface of the sandpaper sheet 1, and the side anti-wear layer 21 is evenly coated along the outer side wall surface of the side wall surface 2. Both the bottom anti-wear layer 10 and the side anti-wear layer 21 are CBN cubic boron nitride coatings. The thicknesses of both the bottom anti-wear layer 10 and the side anti-wear layer 21 are fifteen to twenty microns. The CBN cubic boron nitride coating has high hardness, strong wear resistance, and is resistant to high temperature and corrosion.

[0032] The top view cross-sections of both the bonding and fixing layer 11 and the installation cylinder 4 are circular cross-sections. The center of the circular cross-section of the bonding and fixing layer 11 in the top view is concentric with the center of the circular cross-section of the sandpaper sheet 1 in the top view. The bonding and fixing layer 11 is epoxy resin glue, which has strong bonding strength and can prevent loosening and slipping after bonding.

[0033] The reinforcing protective ring 3 is arranged along the top surface of the sandpaper sheet 1. The reinforcing protective ring 3 is a circular ring structure as a whole. The included angle between the supporting inclined block 31 and the horizontal plane is twenty-seven degrees and there are forty of them arranged in a circumferential pattern. Both ends of the supporting inclined block 31 are fixedly arranged with the inner wall surface of the reinforcing protective ring 3 and the top surface of the sandpaper sheet 1 respectively. The inclined supporting inclined block 31 and the reinforcing protective ring 3 form a triangular inner cavity structure, which has strong stable supporting performance.

[0034] The positioning pin 6 and the positioning slot 72 are a group, and there are two groups arranged symmetrically in total. The positioning pin 6 is threadedly connected to the threaded hole 51 and is clamped with the positioning slot 72. The positioning pin 6 does not protrude above the embedded slot 5, realizing symmetrical clamping and limiting positioning of the installation stud 71, and preventing the installation part from loosening.

[0035] The tool card slot 61 is a cross-shaped groove, which can be used to insert and rotate the positioning pin 6 with a flat-blade screwdriver or a Phillips screwdriver, improving the scope of application.

[0036] The pressing head 62 is in extrusion contact with the inner groove wall of the positioning slot 72. The pressing head 62 is made of TPE plastic material, which has high elasticity, is environmentally friendly, non-toxic, wear-resistant and durable.

[0037] The installation stud 71 is threadedly connected to the installation thread groove 41. The vertical length dimension of the installation stud 71 is not less than the vertical depth dimension of the installation thread groove 41. During the threaded installation, it is ensured that the lower end surface of the installation stud 71 is in extrusion contact with the inner wall of the installation thread groove 41 to realize positioning, and to ensure the alignment between the positioning pin 6 and the positioning slot 72 in the later stage.

[0038] Working mode: By setting the bottom anti-wear layer 10 structure on the lower end surface of the sandpaper sheet 1 and the side anti-wear layer 21 structure on the side wall surface 2 of the sandpaper sheet 1, the anti-wear and abrasion resistance of the grinding surface and the side wall surface of the sandpaper sheet 1 are improved.

[0039] Moreover, by providing a reinforcing protective ring 3 on the top surface of the sandpaper sheet 1 and arranging an inclined supporting block 31 structure in a circumferential arrangement on the reinforcing protective ring 3, the situation that the sandpaper sheet 1 is deformed, bent or even broken due to side collisions is effectively avoided, and the overall anti-bending deformation and fracture resistance of the sandpaper sheet 1 is improved.

[0040] In addition, first, the mounting cylinder 4 is firmly bonded to the sandpaper sheet 1 through the adhesive layer 11. Then, the mounting stud 71 is aligned with the mounting screw groove 41. Next, the sandpaper sheet 1 is rotated clockwise, driving the mounting cylinder 4 to rotate clockwise until the mounting stud 71 is thread-locked with the mounting screw groove 41. Then, a cross screwdriver is taken and inserted into the tool card slot 61 and rotated clockwise, driving the positioning pin 6 to rotate clockwise. Through the threaded transmission of the threaded hole 51, the positioning pin 6 is driven to be inserted into the positioning card slot 72. At this time, the pressing head 62 will be squeezed with the positioning card slot 72 and generate a lateral resilience force to achieve the anti-loosening effect on the positioning pin 6, and the installation of the sandpaper sheet 1 can be completed. At this time, the situation that the installation part of the sandpaper sheet 1 becomes loose during grinding is effectively avoided.

[0041] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A wear-resistant sandpaper sheet, comprising a sandpaper sheet (1), characterized in that: The side end of the sandpaper sheet (1) is provided with a side wall surface (2), the side wall surface (2) is provided with a side anti-wear layer (21), the sandpaper sheet (1) is provided with a bottom anti-wear layer (10) and an adhesive layer (11), the adhesive layer (11) is provided with a mounting tube (4), the upper part of the sandpaper sheet (1) is provided with a mounting top seat (7), and the mounting tube (4) is provided with a mounting stud (71); The sandpaper sheet (1) is provided with a reinforcing protective ring (3), and the reinforcing protective ring (3) is provided with a supporting inclined block (31); The mounting stud (71) is provided with a positioning groove (72), the mounting tube (4) is provided with a mounting screw groove (41) and an embedded groove (5), the embedded groove (5) is provided with a threaded hole (51), a positioning screw pin (6) is arranged in the threaded hole (51), and the positioning screw pin (6) is provided with a knife groove (61) and a pressure head (62).

2. The wear-resistant sandpaper sheet according to claim 1, characterized in that: The bottom anti-wear layer (10) is evenly coated along the lower end surface of the sandpaper sheet (1), and the side anti-wear layer (21) is evenly coated along the outer wall surface of the side wall surface (2). Both the bottom anti-wear layer (10) and the side anti-wear layer (21) are CBN cubic boron nitride coatings, and the thickness of the bottom anti-wear layer (10) and the side anti-wear layer (21) are both fifteen to twenty micrometers.

3. The wear-resistant sandpaper sheet according to claim 1, characterized in that: The top view cross-sections of the bonding layer (11) and the mounting tube (4) are both circular cross-sections, and the center of the top view circular cross-section of the bonding layer (11) is concentric with the center of the top view circular cross-section of the sandpaper sheet (1).

4. The wear-resistant sandpaper sheet according to claim 1, characterized in that: The reinforcing guard ring (3) is arranged along the top surface of the sandpaper sheet (1); the reinforcing guard ring (3) is an annular structure as a whole; the angle between the supporting inclined blocks (31) and the horizontal plane is 27 degrees and there are 40 of them arranged in a circle; the two ends of the supporting inclined blocks (31) are respectively fixed to the inner wall surface of the reinforcing guard ring (3) and the top surface of the sandpaper sheet (1).

5. The wear-resistant sandpaper sheet according to claim 1, characterized in that: The positioning screw pin (6) and the positioning slot (72) form a group, which are two symmetrically arranged groups in total. The positioning screw pin (6) is threadedly connected to the threaded hole (51) and is snap-fitted to the positioning slot (72). The positioning screw pin (6) is not higher than the embedded slot (5).

6. The wear-resistant sandpaper sheet according to claim 1, characterized in that: The knife clamping groove (61) is a cross-shaped groove, and the pressing head (62) is in extrusion contact with the inner groove wall of the positioning clamping groove (72).

7. The wear-resistant sandpaper sheet according to claim 1, characterized in that: The mounting stud (71) is threadedly connected to the mounting screw groove (41), and the vertical length dimension of the mounting stud (71) is not less than the vertical depth dimension of the mounting screw groove (41).

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