Mechanism for rapidly replacing printing rubber roller device

Abstract

The invention belongs to the field of printers, and relates to a silk-screen plate making machine, in particular to a mechanism for quickly replacing a printing rubber roller device, which comprises two bearing seats, an upper rubber roller and a lower rubber roller are rotationally connected between the two bearing seats, the bearing seats are provided with upper mounting holes corresponding to the upper rubber roller and lower mounting holes corresponding to the lower rubber roller, and the upper mounting holes and the lower mounting holes are communicated with each other. The section of the upper mounting hole is formed by stretching a circle, the inner diameter length of the upper mounting hole in the vertical direction is larger than the inner diameter length of the upper mounting hole in the horizontal direction, and the section of the lower mounting hole is circular. The two rubber covered rollers which are in lap joint in the vertical direction are arranged, the upper rubber covered roller makes contact with a silk screen, the lower rubber covered roller provides supporting force for the upper rubber covered roller, and the problem that the structural strength of a single rubber covered roller is insufficient is solved. The inner diameter length of the upper mounting hole in the vertical direction is larger than the inner diameter length of the upper mounting hole in the horizontal direction, so that the upper rubber roller can slightly move up and down, the upper rubber roller does not need to be tightly pressed on the lower rubber roller during mounting, and the upper rubber roller can be automatically pressed on the lower rubber roller under the action of gravity / pressure of a printing head.

Description

Technical Field

[0001] The present invention belongs to the field of printers, relates to a screen plate making machine, and particularly relates to a mechanism for a device for quickly replacing a printing rubber roller. Background Art

[0002] A screen plate making machine is a device for printing on a screen plate. The screen plate includes a screen frame and a screen covered on the screen frame. When the screen plate making machine is printing, a print head and a rubber roller are clamped on both sides of the screen. The rubber roller provides a supporting force for the screen, so that the print head is closely attached to the screen. However, the existing rubber roller structure has defects. When the rubber roller travels along the printing path, it cannot cover the entire area of the screen. In the case of losing the support of the rubber roller, the print head cannot print on the entire area of the screen either. This is because the screen is covered above the screen frame, and the print head can contact the screen without entering the screen frame. However, the rubber roller needs to enter the screen frame from below, and the rubber roller is cylindrical. When the rubber roller approaches the screen frame, when viewed from the side: the vertex of the circle contacts the screen, and the side of the circle contacts the screen frame. Therefore, some areas at both ends of the screen are outside the travel range of the rubber roller, and these areas cannot be printed. Moreover, the size of these areas is affected by the diameter of the rubber roller. The smaller the diameter, the larger the printable range. However, reducing the diameter of the rubber roller will bring new problems: the structural strength of the rubber roller becomes lower, and under the pressure applied by the print head, the rubber roller is prone to bending and breaking. Therefore, two rubber rollers are stacked to improve the structural strength, but the two rubber rollers need to be pressed against each other during installation, so it is not convenient for installation. Summary of the Invention

[0003] Aiming at the problem that the printing area of the screen plate making machine is affected by the rubber roller and cannot fully print the screen, the present invention proposes a mechanism for a device for quickly replacing a printing rubber roller.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is: a mechanism for a device for quickly replacing a printing rubber roller, including two bearing seats, and an upper rubber roller and a lower rubber roller are rotatably connected between the two bearing seats.

[0005] Preferably, the bearing seat is provided with an upper mounting hole corresponding to the upper rubber roller and a lower mounting hole corresponding to the lower rubber roller. The cross-sectional shape of the upper mounting hole is formed by stretching a circle, and the inner diameter length of the upper mounting hole in the vertical direction is greater than the inner diameter length in the horizontal direction. The cross-section of the lower mounting hole is circular.

[0006] Preferably, bearings are installed in both the upper mounting hole and the lower mounting hole.

[0007] Preferably, a silicone sleeve is sleeved on the upper rubber roller.

[0008] Preferably, the top height of the bearing seat is lower than the upper side height of the upper rubber roller.

[0009] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0010] The present invention is provided with two rubber rollers lapped in the vertical direction. The upper rubber roller contacts the wire mesh, and the lower rubber roller provides a supporting force for the upper rubber roller, solving the problem of insufficient structural strength of a single rubber roller.

[0011] The inner diameter length of the upper mounting hole of the present invention in the vertical direction is greater than that in the horizontal direction, enabling the upper rubber roller to move slightly up and down. Therefore, when installing, it is not necessary to press the upper rubber roller tightly against the lower rubber roller. The upper rubber roller will automatically press on the lower rubber roller under the action of gravity / the pressure of the print head. The design of the upper mounting hole makes the installation more convenient and fast.

[0012] The interaction force between the upper rubber roller and the lower rubber roller of the present invention is small. Therefore, the silicone sleeve will not produce irreversible deformation due to long-term pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] Figure 1 It is a schematic structural diagram of a wire mesh plate;

[0015] Figure 2 It is a comparison diagram of unprinted areas generated by using rubber rollers of different diameters;

[0016] Figure 3 It is a schematic structural diagram of a mechanism of a device for quickly replacing a printing rubber roller;

[0017] Figure 4 It is a schematic structural diagram of another perspective of a mechanism of a device for quickly replacing a printing rubber roller.

[0018] In the above figures, 1, wire mesh frame; 2, wire mesh; 3, rubber roller; 4, bearing seat; 5, upper rubber roller; 6, lower rubber roller; 7, upper mounting hole; 8, lower mounting hole; 9, bearing. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In order to be able to more clearly understand the above objects, features and advantages of the present invention, the following will further illustrate the present invention in conjunction with the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0020] In the following description, many specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention may be practiced in other ways different from those described herein. Therefore, the present invention is not limited by the limitations of the specific embodiments disclosed in the following specification.

[0021] As Figure 1 , Figure 2 , Figure 3 , Figure 4 shown, in order to increase the printing range, the present invention uses a rubber roller 3 with a smaller diameter. In order to solve the problem of insufficient structural strength of the rubber roller 3, the present invention proposes a mechanism for a device for quickly replacing a printing rubber roller, including two bearing seats 4, and an upper rubber roller 5 and a lower rubber roller 6 are rotatably connected between the two bearing seats 4.

[0022] Specifically, the present invention is provided with two rubber rollers 3 lapped in the vertical direction. The upper rubber roller 5 contacts the screen 2, and the lower rubber roller 6 provides a supporting force for the upper rubber roller 5, solving the problem of insufficient structural strength of a single rubber roller.

[0023] Further, the bearing seat 4 is provided with an upper mounting hole 7 corresponding to the upper rubber roller and a lower mounting hole 8 corresponding to the lower rubber roller 6. The cross-sectional shape of the upper mounting hole 7 is formed by circular stretching, and the inner diameter length of the upper mounting hole 7 in the vertical direction is greater than the inner diameter length in the horizontal direction. The cross-section of the lower mounting hole 8 is circular.

[0024] Specifically, since the inner diameter length of the upper mounting hole 7 in the vertical direction is greater than the inner diameter length in the horizontal direction, the upper rubber roller 5 can move slightly up and down. Therefore, when installing, it is not necessary to press the upper rubber roller 5 tightly on the lower rubber roller 6. The upper rubber roller 5 will automatically press on the lower rubber roller 6 under the action of gravity / printing head pressure. The design of the upper mounting hole 7 makes the installation more convenient.

[0025] Further, bearings 9 are installed in both the upper mounting hole 7 and the lower mounting hole 8.

[0026] Further, a silicone sleeve (not shown in the figure) is sleeved on the upper rubber roller. The silicone material is conductive and has better anti-slip performance than metal, which is beneficial to printing work. And because the upper rubber roller 5 can move slightly up and down, it is not necessary to press the upper rubber roller tightly on the lower rubber roller 6 when installing. When the printing head does not apply pressure, the interaction force between the upper rubber roller 5 and the lower rubber roller 6 is small. Therefore, the silicone sleeve will not be deformed due to long-term pressure.

[0027] Further, the top height of the bearing seat 4 is lower than the upper side height of the upper rubber roller 5, avoiding contact between the top of the bearing seat 4 and the screen.

[0028] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention in any other form. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as they do not depart from the technical solution content of the present invention, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A mechanism for a device with a quickly replaceable printing rubber roller, characterized in that, It includes two bearing seats. A glue applying roller and a lower glue roller are rotatably connected between the two bearing seats. The bearing seats are respectively provided with an upper mounting hole corresponding to the glue applying roller and a lower mounting hole corresponding to the lower glue roller. The cross-sectional shape of the upper mounting hole is formed by circular stretching, and the inner diameter length of the upper mounting hole in the vertical direction is greater than that in the horizontal direction. The cross-section of the lower mounting hole is circular.

2. The mechanism of a quick-change printing rubber roller device according to claim 1, characterized in that, Bearings are installed in both the upper mounting hole and the lower mounting hole.

3. The mechanism of a quick-change printing rubber roller device according to claim 2, characterized in that, A silica gel sleeve is sleeved on the glue applying roller.

4. The mechanism of a quick-change printing rubber roller device according to claim 3, characterized in that, The top height of the bearing seat is lower than the upper side height of the glue applying roller.

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