Novel pad printing rubber head

Abstract

The utility model discloses a novel pad printing rubber head which comprises a rubber head ink taking area and a rubber head side wall adjacent to the rubber head ink taking area, the rubber head side wall is provided with an air dredging structure, when the rubber head ink taking area and a chamfer of the rubber head side wall are in contact with a glass platform, a certain distance is still reserved between the rubber head side wall and the inner side of the glass platform, and the rubber head ink taking area and the chamfer of the rubber head side wall are in contact with the glass platform. A closed state is not formed, and air can be discharged. The novel pad printing rubber head has the advantages that the novel pad printing rubber head is used for pad printing after pad printing, no ink is lost, and the novel pad printing rubber head can be used for producing good 3D glass pad printing products.

Description

Technical Field

[0001] The utility model relates to the field of 3D pad printing, in particular to a novel pad printing rubber head. Background Art

[0002] The pad printing process refers to the process of first etching the desired pattern on a steel plate (or copper, thermoplastic plastic) using film, then using a curved pad printing head made of silicone rubber material to dip the ink on the gravure onto the surface of the pad printing head, and then press it against the surface of the desired object to print text, patterns, etc.

[0003] An improved watch 3D glass pad printing ink can realize a concave pad printing rubber head on the side wall of the pad printing ink from the window to the glass 3D platform at one time, optimize the production process, and reduce product processing costs.

[0004] At present, the rubber head used in the pad printing process of 3D watch glass slowly deforms when the rubber head is pressed down during pad printing. The side wall of the rubber head deforms outward due to expansion. When the side wall of the 3D watch glass is bent higher than a certain angle (more than 70°) or the arc height of the 3D surface of the glass side wall is higher than a certain height (more than 2.0mm), the expansion caused by the downward pressure of the rubber head will cause the side wall of the rubber head to contact the glass platform surface, and the chamfer of the rubber head itself has not yet contacted the inner cavity chamfer of the glass. At this time, the rubber head will form a sealed state with the contacted glass platform, resulting in the subsequent chamfer of the rubber head itself unable to contact the inner chamfer of the glass, resulting in no ink leakage at the inner chamfer of the glass. Utility Model Content

[0005] The utility model aims to solve the technical problem that in the pad printing process, the chamfered corners of the glass are prone to light leakage without ink and poor appearance, and proposes a novel pad printing rubber head.

[0006] The technical problem of the utility model is solved by the following technical solutions:

[0007] The utility model shows a novel pad printing rubber head, comprising a pad ink collection area and a pad side wall adjacent to the pad ink collection area, wherein the pad side wall is provided with an air-repellent structure, and when the pad ink collection area and the chamfer of the pad side wall are in contact with a glass platform, the pad side wall is still at a certain distance from the inner side of the glass platform, and a closed state is not formed, and air can be discharged.

[0008] In some embodiments, the air-repellent structure is an irregular curved surface.

[0009] In some embodiments, the irregular curved surface is formed by splicing multiple curved surface segments.

[0010] In some embodiments, the irregular curved surface includes a downward pressure buffer area, and the downward pressure buffer area is concave inwardly toward the direction of the axis of the rubber head.

[0011] In some embodiments, the irregular curved surface is inwardly recessed with a depth ranging from 0 to 10 mm.

[0012] In some embodiments, the initial position of the irregular curved surface starts from the ink taking area of ​​the rubber head.

[0013] In some embodiments, a main body support area is further included, and the end position of the irregular curved surface ends at the main body support area.

[0014] In some embodiments, the main support area is made of anti-static silicone.

[0015] In some embodiments, a fixing plate is further included, wherein the fixing plate is fixedly connected to the main body supporting area.

[0016] In some embodiments, it also includes a head support area, the head support area coincides with the axis position of the novel pad printing rubber head, and the head support area is made of anti-static silicone.

[0017] The beneficial effects of the utility model compared with the prior art include:

[0018] The utility model provides a novel pad printing rubber head with technical features such as an air-venting structure, so that when the chamfer of the rubber head contacts the inner chamfer of the glass, there is still a certain distance between the side wall of the rubber head and the inner side of the glass platform, which can be used to discharge air and does not form a sealed state, thereby achieving no loss of pad printing ink after pad printing with the novel pad printing rubber head, and can be used to produce good products.

[0019] Other beneficial effects of the embodiments of the present invention will be further described below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a (square) pad printing rubber head of the prior art;

[0021] Figure 2 It is a schematic diagram of the structure of a (circular) pad printing rubber head in the prior art;

[0022] Figure 3 Schematic diagram of the structure of the novel (square) pad printing rubber head of Example 1;

[0023] Figure 4 is a structural schematic diagram of a novel (circular) pad printing rubber head of Example 2;

[0024] Figure 5 This is a schematic diagram of the prior art pad printing rubber head before pressing down;

[0025] Figure 6 This is a schematic diagram of the prior art when the pad printing rubber head is pressed down;

[0026] Figure 7It is a schematic diagram of the effect of the prior art that the side wall of the pad printing rubber head contacts the inner side of the glass platform in advance;

[0027] Figure 8 This is a schematic diagram of the new pad printing rubber head before pressing down in the embodiment of the utility model;

[0028] Fig. 9 This is a schematic diagram of the embodiment of the utility model when the new pad printing rubber head is pressed down;

[0029] Fig.10 This is a schematic diagram of the effect that a certain distance still exists between the side wall of the rubber head and the inner side of the glass platform in the embodiment of the utility model;

[0030] Fig.11 It is a product effect picture after pad printing with a pad printing head in the prior art;

[0031] Fig.12 This is a product effect diagram after pad printing by the new pad printing rubber head in the embodiment of the utility model.

[0032] The reference numerals are as follows:

[0033] 1. Pad ink collection area; 2. Pad side wall; 21. Downward pressure buffer area; 22. Main body support area; 3. Head support area; 4. Fixed plate. DETAILED DESCRIPTION

[0034] The present invention is further described below with reference to the accompanying drawings and in combination with preferred embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0035] It should be noted that the directional terms such as left, right, up, down, top, and bottom in this embodiment are merely relative concepts or are based on the normal use status of the product, and should not be considered as restrictive.

[0036] Existing technology defects:

[0037] When the 3D watch glass side wall is bent at a higher angle (above 70°) or the 3D surface arc height of the glass side wall is higher than a certain height (above 2.0mm), Figure 1 The products printed by the conventional pad printing head leak light and have poor appearance. Figures 4 to 6 As shown, the reason why the prior art has the above-mentioned defects is that during the pad printing process, when the rubber head starts to press down, the silicone on the side wall of the rubber head expands and deforms outward due to the pressure. After the downward pressure reaches a certain degree, the side wall of the rubber head expands and deforms outward in advance and contacts with the inner chamfer of the glass platform and then seals, resulting in the presence of air at the inner chamfer of the glass in the square frame. In the subsequent pressurization process, the air cannot be removed, and the surface of the rubber head at the side position cannot contact the glass, resulting in light leakage at this position after pad printing, and the final product has a poor appearance.

[0038] For a glass platform whose side wall of a 3D structured glass cover is bent at a higher angle (above 70°) or whose 3D surface arc height of the glass side wall is higher than a certain height (above 2.0 mm), an embodiment of the utility model shows a new type of pad printing rubber head, including a rubber head ink collection area (the contact area between the rubber head and the product printed pattern) and a rubber head side wall adjacent to the rubber head ink collection area, wherein the rubber head side wall is provided with an air-repellent structure, and when the chamfers of the rubber head ink collection area and the rubber head side wall are in contact with the glass platform, the rubber head side wall still has a certain distance from the inner side of the glass platform, and will not form a closed state, and air can be discharged.

[0039] Embodiment 1:

[0040] This embodiment shows a new type of pad printing rubber head. Figure 2 As shown, it is specifically a square rubber head, which includes a rubber head ink collection area and a rubber head side wall adjacent to the rubber head ink collection area, and the rubber head side wall is provided with an air-repellent structure. In this embodiment, the air-repellent structure is an irregular curved surface, and the irregular curved surface is formed by splicing multiple curved surfaces. In addition, in other embodiments, the air-repellent structure can also be a plurality of convex points distributed along the circumference of the rubber head side wall. When the chamfers of the rubber head ink collection area and the rubber head side wall are in contact with the glass platform, the convex points and the inner chamfers of the glass platform are abutted in advance, and the rubber head side wall is still at a certain distance from the inner side of the glass platform, so that a closed state will not be formed, and air can be discharged.

[0041] The irregular curved surface includes a downward pressure buffer zone, which is concave inwardly toward the direction of the rubber head axis, and the depth of the concave ranges from 0 to 10 mm. The new pad printing rubber head also includes a main body support area, which is located at one end of the downward pressure buffer zone away from the rubber head ink collection area. The initial position of the irregular curved surface starts from the rubber head ink collection area, and the end position of the irregular curved surface ends at the main body support area; the main body support area is fixedly connected to a fixed plate, and the material of the main body support area is anti-static silicone, and the "main body support area" has a supporting effect compared to other areas.

[0042] The new pad printing rubber head also includes a head support area, which coincides with the axis position of the new pad printing rubber head. The head support area is made of anti-static silicone. The "head support area" has the function of alignment and guidance during the pad printing process.

[0043] Embodiment 2:

[0044] This embodiment shows a new type of pad printing rubber head. Figure 3As shown, it is specifically a circular rubber head, which includes a rubber head ink collection area and a rubber head side wall adjacent to the rubber head ink collection area, and the rubber head side wall is provided with an air-repellent structure. In this embodiment, the air-repellent structure is an irregular curved surface, and the irregular curved surface is formed by splicing multiple curved surfaces. In addition, in other embodiments, the air-repellent structure can also be a plurality of convex points distributed along the circumference of the rubber head side wall. When the chamfers of the rubber head ink collection area and the rubber head side wall are in contact with the glass platform, the convex points and the inner chamfers of the glass platform are abutted in advance, and the rubber head side wall is still at a certain distance from the inner side of the glass platform, so that a closed state will not be formed, and air can be discharged.

[0045] The irregular curved surface includes a downward pressure buffer zone, which is concave inwardly toward the direction of the rubber head axis, and the concave depth (diameter difference) ranges from 0-10mm. The new pad printing rubber head also includes a main body support area, which is located at one end of the downward pressure buffer zone away from the rubber head ink collection area. The initial position of the irregular curved surface starts from the rubber head ink collection area, and the end position of the irregular curved surface ends at the main body support area; the main body support area is fixedly connected to a fixed plate, and the material of the main body support area is anti-static silicone, and the "main body support area" has a supporting effect compared to other areas.

[0046] The new pad printing rubber head also includes a head support area, which coincides with the axis position of the new pad printing rubber head. The head support area is made of anti-static silicone. The "head support area" has the function of alignment and guidance during the pad printing process.

[0047] Working principle:

[0048] The side wall of the new pad printing rubber head shown in the embodiment of the utility model is designed with an irregular concave structure, such as Figure 7 and Figure 8 As shown in the figure, during the pressing process, the side wall of the rubber head is sunken inwards during the expansion process. When the chamfer of the rubber head contacts the inner chamfer of the glass, there is still a certain distance between the side wall of the rubber head and the inner side of the glass platform, which can be used to discharge air and will not form a sealed state. After subsequent pressurization, the surface of the rubber head can be in perfect contact with the inner cavity of the glass (such as Fig. 9 As shown), the ink is printed well in the last pad printing, and the surface inspection shows no light leakage and no defects.

[0049] Product effect comparison:

[0050] Compared with the prior art, the pad printing rubber head lacks ink after pad printing, and the products produced are defective (pad printing effect is as follows Fig.10 As shown in the figure, the new pad printing rubber head provided by the embodiment of the utility model adopts a concave curve in the direction of the rubber head axis. According to the arc height of the product, multiple arcs greater than the product height are made to form an irregular concave curve, avoiding contact with the product line to solve the problem of sealing air when the rubber head is pressed down. After pad printing, there is no loss of pad printing ink, which can be used to produce good products (pad printing effect as shown in the figure). Fig.11 shown).

[0051] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For technicians in the technical field to which the present invention belongs, several equivalent substitutions or obvious variations can be made without departing from the concept of the present invention, and the performance or use is the same, which should be regarded as belonging to the protection scope of the present invention.

Claims

1. A novel pad printing pad, comprising a pad ink collection area and a pad side wall adjacent to the pad ink collection area, characterized in that: The side wall of the glue head is provided with an air-venting structure. When the ink collection area of ​​the glue head and the chamfer of the side wall of the glue head are in contact with the glass platform, there is still a certain distance between the side wall of the glue head and the inner side of the glass platform, and a closed state is not formed, and air can be discharged.

2. A novel pad printing rubber head as claimed in claim 1, characterized in that: The air-repellent structure is an irregular curved surface.

3. A novel pad printing rubber head as claimed in claim 2, characterized in that: The irregular curved surface is formed by splicing multiple curved surface segments.

4. A novel pad printing rubber head as claimed in claim 2 or 3, characterized in that: The irregular curved surface includes a downward pressure buffer area, and the downward pressure buffer area is concave inwardly toward the direction of the axis of the rubber head.

5. A novel pad printing rubber head as claimed in claim 4, characterized in that: The irregular curved surface is inwardly concave with a depth ranging from 0 to 10 mm.

6. A novel pad printing rubber head as claimed in claim 5, characterized in that: The initial position of the irregular curved surface starts from the ink taking area of ​​the rubber head.

7. A novel pad printing rubber head as claimed in claim 6, characterized in that: It also includes a main body support area, and the end position of the irregular curved surface ends at the main body support area.

8. A novel pad printing rubber head as claimed in claim 7, characterized in that: The main body support area is made of anti-static silica gel.

9. A novel pad printing rubber head as claimed in claim 8, characterized in that: It also includes a fixing plate, which is fixedly connected to the main body supporting area.

10. A novel pad printing rubber head as claimed in claim 9, characterized in that: It also includes a head support area, which coincides with the axis position of the novel pad printing rubber head, and the head support area is made of anti-static silicone.

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