Grinding head mechanism for grinding screen printing plate silk screen

Abstract

The utility model relates to a grinding head mechanism for grinding a screen printing plate and a silk screen, which comprises a mounting plate, a driving device and a grinding head, the ring piece is arranged on the mounting plate; the abrasive paper covers the ring piece; the inner pressing ring is arranged on the inner side of the ring piece on the mounting plate; the outer pressing ring is arranged on the outer side of the ring piece on the mounting plate; wherein gaps are respectively arranged around the inner side and the outer side of the abrasive paper; the inner pressing ring and the outer pressing ring cover the notch and press the abrasive paper on the ring piece; the abrasive paper protrudes out of the end face of the inner pressing ring and the end face of the outer pressing ring. The problem that in an existing scheme, abrasive paper can be bent or folded to be attached to the hand, the roughness degree of the surface of a screen printing plate silk screen is different, and therefore the attachment condition between film glue and the screen printing plate silk screen is affected is solved.

Description

Technical Field

[0001] The utility model relates to the field of grinding mechanisms, in particular to a grinding head mechanism for grinding the screen mesh of a screen printing plate. Background Art

[0002] After the screen mesh is stretched, it is degreased and dried, and then the coating process is carried out. In order to firmly attach the film adhesive to the screen mesh of the screen printing plate, the screen mesh needs to be ground before coating.

[0003] Manual grinding with sandpaper can increase the roughness of the screen mesh, and the film adhesive can firmly adhere to the screen mesh. However, in order to hold the sandpaper conveniently, the sandpaper will be bent or folded to fit the hand, and the surface roughness of the screen mesh is different, thus affecting the adhesion between the film adhesive and the screen mesh.

[0004] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of the present disclosure, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Invention

[0005] Aiming at the above-mentioned disadvantages of the prior art, the purpose of the utility model is to provide a grinding head mechanism for grinding the screen mesh of a screen printing plate, so as to solve the problem in the prior art that the sandpaper is bent or folded to fit the hand, and the surface roughness of the screen mesh is different, thus affecting the adhesion between the film adhesive and the screen mesh.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows:

[0007] A grinding head mechanism for grinding the screen mesh of a screen printing plate;

[0008] It includes: a mounting plate, mounted on a driving device; a ring member, disposed on the mounting plate; a sandpaper, covering the ring member; an inner pressing ring, disposed on the inner side of the ring member on the mounting plate; an outer pressing ring, disposed on the outer side of the ring member on the mounting plate; wherein, notches are respectively provided around the inner side and the outer side of the sandpaper; the inner pressing ring and the outer pressing ring cover the notches and press the sandpaper against the ring member; the sandpaper protrudes from the end faces of the inner pressing ring and the outer pressing ring.

[0009] A further technical solution is that a protruding portion protruding outward is formed on the end face of the ring member; the protruding portion is arranged along the ring member; the sandpaper covers the protruding portion.

[0010] A further technical solution is that the width of the sandpaper is positively correlated with the number of the protruding portions.

[0011] A further technical solution is that the notches are arranged at intervals, forming paper edges on the inner and outer sides of the sandpaper; the inner pressing ring and the outer pressing ring press the paper edges tightly.

[0012] A further technical solution is that the width of the notch gradually narrows.

[0013] A further technical solution is that a first inclined surface is formed on one side of the inner pressing ring and the outer pressing ring close to the ring part; second inclined surfaces are formed on both the inner and outer sides of the ring part; the sandpaper is clamped between the first inclined surface and the second inclined surface.

[0014] A further technical solution is that a first tooth shape is formed on the first inclined surface; a second tooth shape is formed on the second inclined surface; when the sandpaper is clamped by the first inclined surface and the second inclined surface, the sandpaper is bent between the first tooth shape and the second tooth shape.

[0015] A further technical solution is that it further includes a plurality of fixing pieces; the fixing pieces respectively pass through the inner pressing ring and the outer pressing ring, and the fixing pieces are screwed into the mounting plate.

[0016] Compared with the prior art, the beneficial technical effects of the present utility model are as follows: (1) The grinding head mechanism for grinding the screen printing mesh is installed at the driving end of the driving device, and the driving device can drive the grinding head mechanism for grinding the screen printing mesh to rotate at a constant speed, ensuring the consistency of the rotation of the sandpaper during grinding;

[0017] By respectively arranging notches on the inner and outer sides of the sandpaper, when the inner pressing ring and the outer pressing ring respectively squeeze the inner and outer sides of the sandpaper, the notches enable a certain displacement amount on the inner and outer sides of the sandpaper, avoiding the formation of bending and stacking on the inner and outer sides of the sandpaper, and ensuring the flatness of the sandpaper surface;

[0018] When the sandpaper contacts the screen printing mesh, the contact area is annular, improving the stability of the grinding head mechanism for grinding the screen printing mesh in contacting the screen printing mesh, avoiding the grinding head mechanism for grinding the screen printing mesh from tilting to one side, and ensuring the stability of the roughness of the screen printing mesh.

[0019] (2) By the convex part, the contact area between the sandpaper and the screen printing mesh is reduced, so that the forces exerted by each position of the sandpaper on the screen printing mesh are the same, avoiding inconsistent roughness at each position of the screen printing mesh.

[0020] (3) The first inclined surface and the second inclined surface tightly clamp the paper edge. The inclined surface increases the contact area between the sandpaper and the inner pressing ring and the outer pressing ring, and can firmly attach the sandpaper to the ring part; through the inclined surface contact of the first inclined surface and the second inclined surface in this application, large-angle bending of the sandpaper is avoided, ensuring that the sandpaper is completely attached to the ring part.

[0021] (4) Through the engagement of the first tooth profile and the second tooth profile, the pulling force of the inner pressure ring and the outer pressure ring on the sandpaper is strengthened, making the sandpaper firmly adhere to the ring part. Brief Description of the Drawings

[0022] Figure 1 Shows a schematic structural diagram of the grinding head mechanism for grinding a screen printing stencil according to the first embodiment of the present invention.

[0023] Figure 2 Shows a top view structural schematic diagram of the sandpaper according to the first embodiment of the present invention.

[0024] Figure 3 Shows a schematic structural diagram of the grinding head mechanism for grinding a screen printing stencil according to the first embodiment of the present invention, in which there are two sets of raised portions.

[0025] Figure 4 Shows a schematic structural diagram of the grinding head mechanism for grinding a screen printing stencil according to the second embodiment of the present invention.

[0026] Reference numerals in the drawings: 1, mounting plate; 2, ring part; 21, raised portion; 3, sandpaper; 31, notch; 32, paper edge; 4, outer pressure ring; 5, fixing member; 51, first inclined surface; 52, second inclined surface; 53, first tooth profile; 54, second tooth profile; 6, inner pressure ring. Detailed Description of the Embodiments

[0027] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the following further elaborates on the device proposed by the present invention in conjunction with the drawings and specific embodiments. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the drawings are in a very simplified form and all use non-precise scales, only for the purpose of facilitating and clearly assisting in explaining the embodiments of the present invention. In order to make the objectives, features and advantages of the present invention more obvious and understandable, please refer to the drawings. It should be noted that the structures, scales, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have any technical substance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present invention can produce and the objectives that can be achieved, should still fall within the scope covered by the technical content disclosed by the present invention.

[0028] First Embodiment:

[0029] Figure 1 Shows a schematic structural diagram of the grinding head mechanism for grinding a screen printing stencil according to the first embodiment of the present invention. Figure 2 Shows a top view structural schematic diagram of the sandpaper according to the first embodiment of the present invention. Combining Figure 1 andFigure 2 As shown in the figure, the present utility model discloses a grinding head mechanism for grinding a screen printing stencil.

[0030] The grinding head mechanism for grinding a screen printing stencil includes: a mounting plate 1 mounted on a driving device, a ring member 2 provided on the mounting plate 1, a sandpaper 3 covering the ring member 2, an inner pressing ring 6 provided inside the ring member 2 on the mounting plate 1, and an outer pressing ring 4 provided outside the ring member 2 on the mounting plate 1.

[0031] Among them, notches 31 are respectively arranged side by side inside and outside the sandpaper 3. The inner pressing ring 6 and the outer pressing ring 4 cover the notches 31 and press the sandpaper 3 against the ring member 2. The sandpaper 3 protrudes from the end faces of the inner pressing ring 6 and the outer pressing ring 4.

[0032] Exemplarily, the mounting plate 1 is circular. The driving device is a handheld electric device, and the driving device drives the grinding head mechanism for grinding a screen printing stencil to rotate. The driving device includes but is not limited to an angle grinder and a grinding machine. The mounting plate 1 can be mounted on the driving end of the driving device by means of a buckle.

[0033] Exemplarily, the ring member 2 is annular. Exemplarily, the inner pressing ring 6 is annular. Exemplarily, the outer pressing ring 4 is annular. The inner pressing ring 6 and the outer pressing ring 4 are each an integral body.

[0034] The grinding head mechanism for grinding a screen printing stencil is mounted on the driving end of the driving device, and the driving device can drive the grinding head mechanism for grinding a screen printing stencil to rotate at a constant speed, ensuring the consistency of the rotation of the sandpaper 3 during grinding.

[0035] When the inner pressing ring 6 and the outer pressing ring 4 respectively squeeze the inner and outer sides of the sandpaper 3, in order to ensure that the surface of the sandpaper 3 protrudes outward, the inner and outer sides of the sandpaper 3 will form a bent stack, making the surface of the sandpaper 3 uneven, and the roughness of the screen printing stencil cannot be guaranteed after grinding the screen printing stencil. By respectively arranging notches 31 on the inner and outer sides of the sandpaper 3, when the inner pressing ring 6 and the outer pressing ring 4 respectively squeeze the inner and outer sides of the sandpaper 3, the notches 31 allow a certain displacement amount on the inner and outer sides of the sandpaper 3, avoiding the formation of a bent stack on the inner and outer sides of the sandpaper 3 and ensuring the flatness of the surface of the sandpaper 3.

[0036] When the sandpaper 3 contacts the screen printing stencil, the contact area is annular, improving the stability of the grinding head mechanism for grinding a screen printing stencil in contacting the screen printing stencil, avoiding the grinding head mechanism for grinding a screen printing stencil from deviating to one side, and ensuring the stability of the roughness of the screen printing stencil.

[0037] A convex portion 21 protruding outward is formed on the end face of the ring member 2. The convex portion 21 is arranged along the ring member 2 and is provided on the end face of the ring member 2. The sandpaper 3 covers the surface of the convex portion 21. Since the convex portion 21 protrudes outward, the sandpaper 3 protrudes outward and covers the surface of the convex portion 21.

[0038] When the screen printing stencil is polished, it will be stressed and form a depression to a certain extent, and the depression of the screen printing stencil will reset after polishing. If the contact area between the sandpaper 3 and the screen printing stencil is large, the contact degree between different positions of the sandpaper 3 and the screen printing stencil is different.

[0039] By the convex part 21, the contact area between the sandpaper 3 and the screen printing stencil is reduced, so that the forces exerted by each position of the sandpaper 3 on the screen printing stencil are the same, avoiding inconsistent roughness at each position of the screen printing stencil.

[0040] Figure 3 The structural schematic diagram showing that the convex part in the grinding head mechanism for grinding the screen printing stencil in the first embodiment of the present invention is in two groups is shown. The width of the sandpaper 3 is positively correlated with the number of the convex parts 21.

[0041] When the width of the sandpaper 3 is widened, the number of the convex parts 21 also needs to be increased correspondingly to ensure that the forces exerted by each position of the sandpaper 3 on the screen printing stencil are the same. Figure 3 The structural schematic diagram when the convex part 21 is in two groups is shown in.

[0042] The notches 31 are arranged at intervals, and paper edges 32 are formed on the inner side and the outer side of the sandpaper 3. The inner pressing ring 6 and the outer pressing ring 4 press the paper edges 32 to complete the fixation of the inner side and the outer side of the sandpaper 3.

[0043] The width of the notch 31 gradually narrows.

[0044] Exemplarily, the shape of the notch 31 is fan-shaped. Through the notch 31, when the sandpaper 3 is pressed, the paper edge 32 has a certain displacement amount, avoiding bending and stacking.

[0045] The inner pressing ring 6 and the outer pressing ring 4 form a first inclined surface 51 on the side close to the ring part 2. Second inclined surfaces 52 are formed on both the inner and outer sides of the ring part 2. The first inclined surface 51 and the second inclined surface 52 are parallel to each other, and the sandpaper 3 is clamped between the first inclined surface 51 and the second inclined surface 52. The first inclined surface 51 and the second inclined surface 52 press and clamp the paper edge 32, and the contact area between the sandpaper 3 and the inner pressing ring 6 and the outer pressing ring 4 is increased through the inclined surface, so that the sandpaper 3 can be firmly attached to the ring part 2.

[0046] Since the surface height of the inner pressing ring 6 and the outer pressing ring 4 needs to be lower than the surface height of the sandpaper 3 to ensure that the sandpaper 3 contacts the screen printing stencil and avoid the interference of the inner pressing ring 6 and the outer pressing ring 4. If a plane contact is adopted, then both sides of the sandpaper 3 need to be bent into an L shape. At this time, the bending angle of the sandpaper 3 is too large, and the sandpaper 3 will be deformed and cannot be completely attached to the convex part 21 of the ring part 2. In this application, through the inclined surface contact of the first inclined surface 51 and the second inclined surface 52, the large-angle bending of the sandpaper 3 is avoided, and it is ensured that the sandpaper 3 is completely attached to the ring part 2.

[0047] The grinding head mechanism for grinding the screen of a stencil also includes several fixing members 5. Exemplarily, the fixing member 5 is a flat head bolt. The fixing member 5 passes through the inner pressure ring 6 and then is screwed into the mounting plate 1 to fix the inner pressure ring 6 on the mounting plate 1. The fixing member 5 passes through the outer pressure ring 4 and then is screwed into the mounting plate 1 to fix the outer pressure ring 4 on the mounting plate 1. The outer pressure ring 4 and the inner pressure ring 6 press down to fix the ring member 2 on the mounting plate 1.

[0048] Second Embodiment:

[0049] Figure 4 Fig. shows a schematic structural view of the grinding head mechanism for grinding the screen of a stencil according to the second embodiment of the present invention. Combining Figure 1 、 Figure 2 and Figure 4 as shown, a first tooth shape 53 is formed on the first inclined surface 51. A second tooth shape 54 is formed on the second inclined surface 52. When the first inclined surface 51 and the second inclined surface 52 clamp the sandpaper 3, the first tooth shape 53 and the second tooth shape 54 mesh with each other, and the sandpaper 3 is bent back and forth between the first tooth shape 53 and the second tooth shape 54.

[0050] Through the meshing of the first tooth shape 53 and the second tooth shape 54, the pulling force of the inner pressure ring 6 and the outer pressure ring 4 on the sandpaper 3 is strengthened, so that the sandpaper 3 is firmly attached to the ring member 2.

[0051] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0052] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A grinding head mechanism for grinding a screen printing stencil, characterized in that, Comprising: A mounting plate (1), mounted on a driving device; A ring member (2), disposed on the mounting plate (1); A sandpaper (3), covering the ring member (2); An inner pressure ring (6), disposed on the inner side of the ring member (2) on the mounting plate (1); An outer pressure ring (4), disposed on the outer side of the ring member (2) on the mounting plate (1); Wherein, notches (31) are respectively provided around the inner side and the outer side of the sandpaper (3); the inner pressure ring (6) and the outer pressure ring (4) cover the notches (31) and press the sandpaper (3) against the ring member (2); the sandpaper (3) protrudes from the end faces of the inner pressure ring (6) and the outer pressure ring (4).

2. The grinding head mechanism for grinding a screen printing stencil according to claim 1, wherein, A convex portion (21) protruding outward is formed on the end face of the ring member (2); the convex portion (21) is arranged along the ring member (2); the sandpaper (3) covers the convex portion (21).

3. The grinding head mechanism for grinding a screen plate of a printing screen according to claim 2, characterized in that, The width of the sandpaper (3) is positively correlated with the number of the convex portions (21).

4. The grinding head mechanism for grinding a screen plate of a screen printing stencil according to claim 1, characterized in that, The notches (31) are arranged at intervals, forming paper edges (32) on the inner side and the outer side of the sandpaper (3); the inner pressure ring (6) and the outer pressure ring (4) press the paper edges (32).

5. The grinding head mechanism for grinding a screen plate of a screen printing mesh according to claim 4, characterized in that, The width of the notch (31) gradually narrows.

6. The grinding head mechanism for grinding a screen plate of a printing screen according to claim 1, wherein, A first inclined surface (51) is formed on the side of the inner pressure ring (6) and the outer pressure ring (4) close to the ring member (2); second inclined surfaces (52) are formed on the inner and outer sides of the ring member (2); the sandpaper (3) is clamped between the first inclined surface (51) and the second inclined surface (52).

7. The grinding head mechanism for grinding a screen printing stencil according to claim 6, characterized in that, A first tooth shape (53) is formed on the first inclined surface (51); a second tooth shape (54) is formed on the second inclined surface (52); when the first inclined surface (51) and the second inclined surface (52) clamp the sandpaper (3), the sandpaper (3) is bent between the first tooth shape (53) and the second tooth shape (54).

8. The grinding head mechanism for grinding a screen plate of a screen printing stencil according to claim 1, characterized in that, Also included are a number of fixing members (5); the fixing members (5) respectively pass through the inner pressure ring (6) and the outer pressure ring (4), and the fixing members (5) are screwed into the mounting plate (1).

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