3D glass pad printing head

Abstract

This utility model relates to the field of curved glass processing technology and discloses a 3D glass pad printing head that can reduce ink overflow, dimensional deviation, edge chipping, and fragmentation defects in products. It includes a base plate, a pad body, and an elastic pad printing head connected sequentially from bottom to top. The top surface of the elastic pad printing head is a convex arc surface. The top surface of the elastic pad printing head includes a textured anti-adsorption area formed in the middle, an annular ink-taking area surrounding the anti-adsorption area, and an annular ink-separating area located between the textured anti-adsorption area and the annular ink-taking area. The textured anti-adsorption area is provided with a plurality of first elastic ribs arranged side by side along the width direction of the elastic pad printing head and attached to the top surface of the elastic pad printing head, and a plurality of second elastic ribs arranged side by side along the length direction of the elastic pad printing head and attached to the top surface of the elastic pad printing head. The first elastic ribs and the second elastic ribs are intersected and connected to form a mesh structure. At least a portion of the first elastic ribs or the second elastic ribs is higher than the highest point of the top surface of the elastic pad printing head.

Description

Technical Field

[0001] This utility model relates to the field of curved glass processing technology, and in particular to a 3D glass pad printing head. Background Technology

[0002] Pad printing on glass products refers to the transfer process of printing ink patterns onto the glass surface. Specifically, the desired pattern is designed on a gravure plate using a film etching method, and ink is applied. A flexible, curved pad printing head picks up the ink from the gravure plate and presses it onto the glass surface to transfer the ink pattern. Currently, when transferring ink onto glass, especially 3D glass, a pad printing head consisting of a base plate, a main body, and an ink printing area is typically used. The top of the main body is a smooth, convex curved structure made of deformable silicone material. After the pad printing head is pressed down, the curved structure of the ink printing area completely conforms to the concave surface of the 3D glass, thus printing a complete image on the glass surface. However, due to the poor controllability and large deformation of the ink printing area of ​​the pad printing head, ink can be squeezed out from the edge of the pad printing head onto the concave surface of the glass during the pad printing process, resulting in ink overflow. This causes poor product appearance, requiring manual inspection and rework of each piece, leading to insufficient pad printing efficiency. In addition, the adhesive pad tends to adhere to the glass when it is attached to the glass. During the pad printing process, this can cause the glass to shift off its position on the pad printing platform. During the second pad printing, the product shift can lead to poor dimensional deviation of the pad printing window. The adhesion between the adhesive pad and the glass can also cause the glass to fall off during the movement of the adhesive pad, resulting in chipped or broken glass. If the adhered glass is not removed in time when the adhesive pad moves towards the gravure plate for ink application, the glass will break under the combined pressure of the adhesive pad and the gravure plate as the adhesive pad presses down. The resulting glass fragments will directly damage the pad printing adhesive pad, rendering it unusable and shortening its service life. Utility Model Content

[0003] Therefore, it is necessary to address the above-mentioned shortcomings by providing a 3D glass pad printing pad that can reduce ink overflow defects by minimizing deformation, improve pad venting to prevent pad adhesion to glass, and reduce defects such as product size deviation, edge chipping, and fragmentation.

[0004] A 3D glass pad printing head includes a base plate, a head body, and an elastic printing head connected sequentially from bottom to top. The top surface of the elastic printing head is a convex arc surface. The top surface of the elastic printing head includes a textured anti-absorption area formed in its middle, an annular ink-taking area surrounding the anti-absorption area and extending along the edge of the top surface of the printing head, and an annular ink-separating area located between the textured anti-absorption area and the annular ink-taking area. The textured anti-absorption area is provided with a plurality of first elastic ribs arranged side by side along the width direction of the elastic printing head and attached to the top surface of the elastic printing head, and a plurality of second elastic ribs arranged side by side along the length direction of the elastic printing head and attached to the top surface of the elastic printing head. The first elastic ribs extend along the length direction of the elastic printing head, and the second elastic ribs extend along the width direction of the elastic printing head. The first elastic ribs and the second elastic ribs are intersected and connected to form a mesh structure. At least a portion of the first elastic ribs or the second elastic ribs is higher than the highest point of the top surface of the elastic printing head.

[0005] In one embodiment, the first elastic rib has a semi-circular cross-section, and the second elastic rib has a semi-circular cross-section.

[0006] In one embodiment, the first elastic rib has an n-shaped cross-section, and the second elastic rib has an n-shaped cross-section.

[0007] In one embodiment, the height of the first elastic rib is between 1.5 and 2.5 mm, and the height of the second elastic rib is between 1.5 and 2.5 mm.

[0008] In one embodiment, the projection of the first elastic rib onto the top surface of the rubber head body is a straight strip structure, and the projection of the second elastic rib onto the top surface of the rubber head body is a straight strip structure.

[0009] In one embodiment, the projection of the first elastic rib onto the top surface of the rubber head body is a wavy strip structure, and the projection of the second elastic rib onto the top surface of the rubber head body is a wavy strip structure.

[0010] In one embodiment, the distance between adjacent first elastic ribs is 8 mm, and the distance between adjacent second elastic ribs is 12 mm.

[0011] In one embodiment, the dimension of the first elastic rib along the length of the elastic pad printing head is equal to the distance between the two second elastic ribs on both ends of the anilox anti-adsorption zone along the length of the elastic pad printing head, and each end of the first elastic rib is connected to a second elastic rib.

[0012] In one embodiment, the base plate, the pad body, the elastic pad printing head, the first elastic rib, and the second elastic rib are integrally formed; or the base plate, the pad body, and the elastic pad printing head are sequentially bonded together, and the first elastic rib and the second elastic rib are integrally formed and bonded to the top surface of the elastic pad printing head.

[0013] In one embodiment, the width of the annular ink-blocking area is 5-10 mm.

[0014] The 3D glass pad printing head of this invention features a mesh structure with first and second elastic ribs in the anti-adsorption area on the top surface of the elastic pad printing head. This reduces the deformation of the elastic pad printing head under pressure, thereby reducing the pressure on the ink and decreasing the probability of ink overflow. The mesh structure also increases the roughness of the anti-adsorption area, improving the air venting performance. When moving upwards after printing, the mesh structure ensures that the elastic pad printing head breaks the vacuum between itself and the glass, allowing the head to separate and preventing defects such as dimensional deviation, chipping, and breakage caused by glass adsorption on the head. This improves the yield rate of glass pad printing and extends the lifespan of the pad printing head. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the 3D glass pad printing head in one embodiment of the present invention;

[0016] Figure 2 This is a right view of the 3D glass pad printing head in one embodiment of the present invention;

[0017] Figure 3 This is a bottom view of the 3D glass pad printing head in one embodiment of the present invention. Detailed Implementation

[0018] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0019] This utility model discloses a 3D glass pad printing head. This 3D glass pad printing head reduces the deformation of the elastic pad printing head and increases the roughness of its top surface by setting a mesh structure on the top surface, thereby reducing defects such as ink overflow, dimensional deviation, edge chipping, and breakage. For details, please refer to... Figure 1-3The 3D glass pad printing head of this embodiment includes a base plate 100, a head body 200, and an elastic printing head 300 connected sequentially from bottom to top. The base plate 100 is used to fix it to an external driving component, so that the 3D glass pad printing head moves closer to or away from the 3D glass cover plate under the action of the external driving component. In this embodiment, the elastic printing head 300 is made of an elastic material. Thus, when the 3D glass pad printing head abuts against and presses against the surface of the 3D glass cover plate under the action of the external driving component, the elastic printing head 300 will undergo elastic deformation, so that all the ink dipped on the elastic printing head 300 is transferred to the surface of the 3D glass cover plate. The top surface of the elastic printing head 300 is a convex arc surface, so that it can fully conform to the surface of the 3D glass cover plate when compressed, and adapt to the shape of the 3D glass cover plate surface. The top surface of the flexible pad printing head 300 includes a textured anti-adhesion area 310 formed in its center, an annular ink-taking area 320 surrounding the anti-adhesion area and extending along the edge of the top surface of the pad printing head, and an annular ink-separating area 330 located between the textured anti-adhesion area 310 and the annular ink-taking area 320. The annular ink-separating area 330 separates the textured anti-adhesion area 310 and the annular ink-taking area 320, preventing ink from adhering to the textured anti-adhesion area 310 when the flexible pad printing head 300 takes ink, thereby protecting the printed ink pattern. In this embodiment, the width of the annular ink-separating area 330 is 5-10 mm. Preferably, the width of the annular ink-separating area 330 is 7 mm. The mesh anti-adsorption zone 310 is provided with a plurality of first elastic ribs 400 arranged side by side along the width direction of the elastic pad printing head 300 and attached to the top surface of the elastic pad printing head 300, and a plurality of second elastic ribs 500 arranged side by side along the length direction of the elastic pad printing head 300 and attached to the top surface of the elastic pad printing head 300. The first elastic ribs 400 extend along the length direction of the elastic pad printing head 300, and the second elastic ribs 500 extend along the width direction of the elastic pad printing head 300. The first elastic ribs 400 and the second elastic ribs 500 are intersected and connected to form a mesh structure. At least a portion of the first elastic ribs 400 or the second elastic ribs 500 is higher than the highest point of the top surface of the elastic pad printing head.

[0020] The aforementioned 3D glass pad printing head, by setting a mesh structure consisting of a first elastic rib 400 and a second elastic rib 500 in the mesh-like anti-adsorption area 310 on the top surface of the elastic pad printing head 300, enhances the plasticity of the top of the elastic pad printing head 300, reducing the degree of deformation of the elastic pad printing head 300 when pressed, thereby reducing the degree of ink compression by the elastic pad printing head 300, reducing the probability of ink overflow, and reducing ink overflow defects; the mesh structure increases the roughness of the mesh-like anti-adsorption area 310 of the elastic pad printing head 300, improving... The improved air permeability of the flexible pad printing head 300 allows the mesh structure to ensure a vacuum between the flexible pad printing head 300 and the glass during upward movement after printing. This prevents dimensional shifts caused by glass adhering to the flexible pad printing head 300, chipping and breakage caused by the 3D glass moving and falling with the flexible pad printing head 300, and damage to the pad printing head caused by the 3D glass being squeezed by the gravure plate. This improves the yield rate of glass pad printing operations and extends the service life of the pad printing head.

[0021] It should be noted that in this embodiment, by setting a mesh structure composed of the first elastic rib 400 and the second elastic rib 500, the mesh anti-adsorption area 310 on the top surface of the elastic pad printing head 300 is divided into several small grids. Furthermore, during ink transfer, compared to the case where the top surface of the elastic pad printing head 300 is in full contact with the entire glass surface, the contact area between the top of the elastic pad printing head 300 and the glass is significantly reduced, and the bonding force between the elastic pad printing head 300 and the glass is greatly reduced. Thus, during the process of the elastic pad printing head 300 completing the transfer and moving upwards, the weight of the glass can overcome the bonding force between the elastic pad printing head 300 and the glass. During the separation process, the edges of the mesh structure first separate from the glass, creating a gap between the mesh structure and the glass, thereby further expelling air from the interface between the elastic pad printing head 300 and the glass sheet, and releasing the glass from its adhesion to the elastic pad printing head 300. Furthermore, the mesh structure increases the roughness of the anti-adhesion zone 310 of the elastic pad printing head 300. Since both the first elastic rib 400 and the second elastic rib 500 are elastic, when the elastic pad printing head 300 contacts and prints onto the 3D glass, the first elastic rib 400 and the second elastic rib 500 are compressed and deformed to ensure the elastic pad printing head 300 can properly transfer ink onto the surface of the 3D glass. When the printing is finished and the elastic pad printing head 300 needs to be removed, it leaves the 3D glass under external force. The constraints on the first elastic rib 400 and the second elastic rib 500 are released, and they recover their deformation. Simultaneously, the elastic pad printing head 300 is pushed away from the 3D glass surface to prevent the glass from adhering to the elastic pad printing head 300.

[0022] In this embodiment, the length of the base plate 100 is greater than the length of the printing head body 200, and the width of the base plate 100 is greater than the width of the printing head body 200. The printing head body 200 is centrally located on the upper surface of the base plate 100 and is fixedly connected to the base plate 100. The length of the printing head body 200 is greater than the length of the elastic pad printing head 300, and the width of the printing head body 200 is greater than the width of the elastic pad printing head 300. The elastic pad printing head 300 is centrally located on the upper surface of the printing head body 200 and is fixedly connected to the printing head body 200. In this way, the adhesion of ink on the sides of the printing head body 200 and the elastic pad printing head 300 can be reduced, and the ink pattern can be avoided. The main body of the printing head 200 has a square frustum-shaped structure to reduce the difficulty of the 3D glass pad printing printing head dipping into the gravure plate to pick up ink; the base plate 100 has a rectangular plate structure, and the elastic printing head 300 has a square frustum-shaped structure. The corners of the base plate 100, the main body of the printing head 200, and the elastic printing head 300 are all rounded to reduce the impact of the 3D glass pad printing printing head.

[0023] In one embodiment, the base plate 100, the printing head body 200, the elastic printing head 300, the first elastic rib 400, and the second elastic rib 500 are all made of the same material, and the base plate 100, the printing head body 200, the elastic printing head 300, the first elastic rib 400, and the second elastic rib 500 are integrally molded. For example, all five are made of silicone or silicone rubber material and are integrally molded by injection molding to reduce processing difficulty. In another embodiment, the printing head body 200 and the base plate 100 are made of relatively hard materials such as PVC, PC, and PET to facilitate fixing the 3D glass printing printing head to the external drive component. The elastic printing head 300 is made of soft elastic materials such as silicone and rubber. The first elastic rib 400 and the second elastic rib 500 are made of soft elastic materials such as silicone and rubber. In this case, the base plate 100, the printing head body 200, and the elastic printing head 300 are bonded together in sequence. The first elastic rib 400 and the second elastic rib 500 are integrally formed and bonded to the top surface of the elastic printing head 300. Alternatively, the base plate 100 is bonded to the printing head body 200, and the elastic printing head 300, the first elastic rib 400, and the second elastic rib 500 are integrally formed and bonded to the upper surface of the printing head body 200.

[0024] In one embodiment, the first elastic rib 400 and the second elastic rib 500 have a semi-circular cross-section. In another embodiment, the first elastic rib 400 and the second elastic rib 500 have an n-shaped cross-section. In yet another embodiment, the first elastic rib 400 and the second elastic rib 500 have a portion of an ellipse cross-section. In other embodiments, the cross-sections of the first elastic rib 400 and the second elastic rib 500 can also be other shapes, as long as the contact between the first elastic rib 400 and the second elastic rib 500 and the glass is a line contact. The height of the first elastic rib 400 is between 1.5-2.5 mm, and the height of the second elastic rib 500 is between 1.5-2.5 mm. Preferably, the height of the first elastic rib 400 is 2mm, the height of the second elastic rib 500 is 2mm, and the height of the intersection of the first elastic rib 400 and the second elastic rib 500 is 2mm. It can also be understood that the intersection constitutes a part of both the first elastic rib 400 and the second elastic rib 500.

[0025] In one embodiment, the projection of the first elastic rib 400 onto the top surface of the rubber head body 200 is a straight strip structure, and the projection of the second elastic rib 500 onto the top surface of the rubber head body 200 is also a straight strip structure. In this case, the first elastic rib 400 and the second elastic rib 500 are actually arc-shaped ribs extending along an arc-shaped path in the vertical direction, and the mesh structure divides the textured anti-adsorption area 310 into several rectangular small grids. In another embodiment, the projection of the first elastic rib 400 onto the top surface of the rubber head body 200 is a wavy strip structure, and the projection of the second elastic rib 500 onto the top surface of the rubber head body 200 is also a wavy strip structure. In this case, the first elastic rib 400 and the second elastic rib 500 are actually ribs extending along an arc-shaped path in the vertical direction and along a wavy path in the horizontal direction, and the mesh structure divides the textured anti-adsorption area 310 into several irregular small grids, which are composed of four arc lines connected in sequence to form a ring.

[0026] In this embodiment, five first elastic ribs 400 and eleven second elastic ribs 500 are evenly distributed in the mesh anti-adsorption zone 310. The center of the mesh structure formed by the first elastic ribs 400 and the second elastic ribs 500 coincides with the center of the top surface of the elastic pad printing head 300. The distance between adjacent first elastic ribs 400 is 8 mm, and the distance between adjacent second elastic ribs 500 is 12 mm. In addition, the dimension of the first elastic rib 400 along the length of the elastic pad printing head 300 is equal to the distance between the two second elastic ribs 500 on both sides of the anilox anti-adsorption area 310 along the length of the elastic pad printing head 300, and each end of the first elastic rib 400 is connected to a second elastic rib 500; the dimension of the second elastic rib 500 along the width of the elastic pad printing head 300 is equal to the distance between the two first elastic ribs 400 on both sides of the anilox anti-adsorption area 310 along the width of the elastic pad printing head 300, and each end of the second elastic rib 500 is connected to a first elastic rib 400, so as to close the grid at the edge of the mesh structure, thereby improving the stability of the entire mesh structure and the reliability of the connection between the first elastic rib 400 and the second elastic rib 500. In other embodiments, when both the first elastic rib 400 and the second elastic rib 500 are wavy structures, the two first elastic ribs 400 on both sides of the mesh anti-adsorption area can be replaced with straight strip structures, and the length of the extended ends of each second elastic rib can be adjusted to adapt to the straight strip structure of the two first elastic ribs 400 on both sides, so that the shape of the edge of the mesh anti-adsorption area is more regular.

[0027] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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, they should be considered to be within the scope of this specification.

[0028] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A 3D glass pad printing adhesive head, characterized in that, The device includes a base plate, a pad body, and an elastic pad, connected sequentially from bottom to top. The top surface of the elastic pad is a convex arc surface. The top surface of the elastic pad includes a textured anti-absorption area formed in its center, an annular ink-taking area surrounding the anti-absorption area and extending along the edge of the top surface of the pad, and an annular ink-separating area located between the textured anti-absorption area and the annular ink-taking area. The textured anti-absorption area is provided with a plurality of first elastic ribs arranged side by side along the width direction of the elastic pad and attached to the top surface of the elastic pad, and a plurality of second elastic ribs arranged side by side along the length direction of the elastic pad and attached to the top surface of the elastic pad. The first elastic ribs extend along the length direction of the elastic pad, and the second elastic ribs extend along the width direction of the elastic pad. The first elastic ribs and the second elastic ribs are intersected and connected to form a mesh structure. At least a portion of the first elastic ribs or the second elastic ribs is higher than the highest point of the top surface of the elastic pad.

2. The 3D glass pad printing head according to claim 1, characterized in that, The first elastic rib has a semi-circular cross-section, and the second elastic rib has a semi-circular cross-section.

3. The 3D glass pad printing head according to claim 1, characterized in that, The first elastic rib has an n-shaped cross-section, and the second elastic rib has an n-shaped cross-section.

4. The 3D glass pad printing head according to claim 2 or 3, characterized in that, The height of the first elastic rib is between 1.5 and 2.5 mm, and the height of the second elastic rib is between 1.5 and 2.5 mm.

5. The 3D glass pad printing head according to claim 1, characterized in that, The projection of the first elastic rib on the top surface of the rubber head body is a straight strip structure, and the projection of the second elastic rib on the top surface of the rubber head body is a straight strip structure.

6. The 3D glass pad printing head according to claim 1, characterized in that, The projection of the first elastic rib on the top surface of the rubber head body is a wavy strip structure, and the projection of the second elastic rib on the top surface of the rubber head body is also a wavy strip structure.

7. The 3D glass pad printing head according to claim 1, characterized in that, The distance between adjacent first elastic ribs is 8mm, and the distance between adjacent second elastic ribs is 12mm.

8. The 3D glass pad printing head according to claim 1, characterized in that, The dimension of the first elastic rib along the length of the elastic pad printing head is equal to the distance between the two second elastic ribs on both ends of the anilox anti-adsorption zone along the length of the elastic pad printing head, and each end of the first elastic rib is connected to a second elastic rib.

9. The 3D glass pad printing head according to claim 1, characterized in that, The base plate, the main body of the printing head, the elastic pad printing head, the first elastic rib and the second elastic rib are integrally formed; or the base plate, the main body of the printing head and the elastic pad printing head are bonded together in sequence, and the first elastic rib and the second elastic rib are integrally formed and bonded to the top surface of the elastic pad printing head.

10. The 3D glass pad printing head according to claim 1, characterized in that, The width of the annular ink-blocking zone is 5-10mm.

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