Gluing roller mechanism of digital printing machine

Abstract

The utility model discloses a gluing roller mechanism of a digital calico printing machine, and belongs to the technical field of digital calico printing machines. A gluing roller mechanism of a digital printing machine comprises a frame body, a gluing mechanism and a homogenizing roller are installed on the frame body, the homogenizing roller and the gluing mechanism are arranged side by side, the gluing mechanism comprises a glue storage box, and a strip-shaped glue outlet and a plurality of glue outlet grooves are formed in the lower end of the glue storage box. The multiple glue outlet grooves are distributed in the two sides of the strip-shaped glue outlet at equal intervals in an array mode, and knife switch assemblies are arranged on the glue outlet grooves. The glue coating device can adapt to printing materials with different widths, glue waste is reduced, and meanwhile glue coating is more uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of digital printing machines, and more specifically to a rubber roller mechanism for a digital printing machine. Background Art

[0002] Existing digital printing machines usually use a conveyor belt device to convey the printing substrate (for example, cloth) to the printing station for printing. In order to make the printing substrate smooth and wrinkle-free when passing through the printing station, a glue roller is usually used to apply a layer of glue on the conveying surface of the conveyor belt of the conveyor belt device, and the glue is used to stick the printing substrate to the conveyor belt to avoid wrinkles on the printing substrate. When applying glue, the glue roller is first set across the top of the conveyor belt, and then the glue is manually poured on the conveying surface of the conveyor belt below the glue roller and the conveyor belt device is started. The conveyor belt moves forward through the glue roller, and the glue roller can evenly apply the glue on the conveying surface of the conveyor belt. After the conveying surface is coated with glue everywhere, the upper glue roller is removed to complete the gluing operation.

[0003] A Chinese patent document with publication number CN219400832U in the prior art provides a glue roller mechanism for a digital printing machine, the glue roller mechanism comprising two support blocks respectively fixed to opposite sides of a conveyor belt, and pressure rollers respectively fixed at opposite ends to a corresponding one of the support blocks and spanning over the conveyor belt and correspondingly pressed against the conveying surface of the conveyor belt, a chamber for accommodating glue is arranged inside the pressure roller, a glue injection port communicating with the chamber is arranged on the top of the pressure roller, a glue flow seam is arranged on the side of the pressure roller that is connected with the bottom of the chamber and faces the upstream side of the conveyor belt and is higher than the conveying surface of the conveyor belt when gluing, and the glue flow seam extends along the axial direction of the pressure roller and the length is adapted to the width of the effective load-bearing area on the conveying surface.

[0004] In the prior art, a chamber for accommodating glue is provided inside the pressure roller. When the conveyor belt is specifically gluing, glue can be injected into the chamber through the glue injection port. After the glue in the chamber is stationary, the conveyor belt device of the digital printing machine is started, and the conveyor belt moves forward. At the same time, the glue flows from the glue flow gap of the pressure roller to the conveyor belt. Since the length of the glue flow gap of the pressure roller is fixed, the width of the outflowing glue is fixed. Therefore, when printing materials of different widths, after the width of the conveyor belt is determined, the material width is smaller than the width of the conveyor belt. After the glue is evenly applied on the conveyor belt, a certain degree of waste will be generated. For this reason, we propose a glue roller mechanism for a digital printing machine, which can adapt to materials with different widths of printing and has more uniform glue coating. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] The utility model aims to provide a rubber roller mechanism for a digital printing machine to solve the problem of inconvenience in adjusting the cutting length in the above-mentioned background technology.

[0007] 2. Technical solution

[0008] A gluing roller mechanism for a digital printing machine comprises a frame, on which a gluing mechanism and a homogenizing roller are mounted, the homogenizing roller and the gluing mechanism are arranged in parallel, the gluing mechanism comprises a glue storage box, a strip-shaped glue outlet and a plurality of glue outlet grooves are arranged at the lower end of the glue storage box, the plurality of glue outlet grooves are arranged in an array with equal spacing on both sides of the strip-shaped glue outlet, and a gate knife assembly is provided on the glue outlet groove.

[0009] Preferably, a glue adding port is provided at the upper end of the glue storage box, and the lower end of the glue storage box is a semi-cylindrical structure as a whole.

[0010] Preferably, a strip-shaped through hole is opened on the side wall of the strip-shaped glue outlet, a knife bar is movably provided in the strip-shaped through hole, an electric telescopic rod is provided on the glue storage box, and the output end of the electric telescopic rod is connected to the knife bar.

[0011] Preferably, a sliding through hole is provided on the side wall of the glue outlet groove, and the gate knife assembly includes a gate knife block movably arranged in the sliding through hole and a fixing frame arranged on the outer side wall of the glue outlet groove, and a bolt is threadedly connected to the fixing frame, and the end of the bolt is connected to the outer side wall of the gate knife block through a bearing.

[0012] Preferably, the strip-shaped glue outlet is aligned with the lower surface of the strip-shaped glue outlet, and the lower end surface of the strip-shaped glue outlet is processed with arc depth.

[0013] Preferably, the knife bar and the knife block are both made of rubber.

[0014] Preferably, a glue scraper is provided on the side wall of the glue storage box, and the glue scraper is located between the glue storage box and the homogenizing roller.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] In the utility model, according to the width of the material to be printed, the gate knife block is driven to slide horizontally by screwing the bolt. When the gate knife block is in contact with the inner wall of the glue outlet groove, glue is no longer discharged. On the contrary, when the gate knife block is no longer in contact with the inner wall of the glue outlet groove, glue is started to be discharged. Whether the glue outlet groove discharges glue is controlled by using a screwdriver. Before actual use, according to the width of the material to be printed, the number of glue outlet grooves opened is adjusted by a screwdriver to control the length of the glue discharge, thereby adapting to the width of different printed materials, so that the device can adapt to printed materials of different widths and reduce glue waste. At the same time, the electric telescopic rod drives the gate knife strip to slide horizontally. When the gate knife strip is no longer in contact with the inner wall of the strip glue outlet, the strip glue outlet is opened, and finally the glue flows out from the strip glue outlet and the corresponding opened glue outlet groove, and then passes through the glue scraper and the homogenizing roller, so that the applied glue is more even. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the right side of the isometric structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 3 It is a left-side structural schematic diagram of the utility model;

[0021] Figure 4 For this utility model Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0022] Explanation of the numbers in the figure: 1. frame; 2. gluing mechanism; 3. homogenizing roller; 21. glue storage box; 22. strip glue outlet; 23. glue outlet slot; 24. gate knife assembly; 25. glue adding port; 26. gate knife strip; 27. electric telescopic rod; 28. glue scraper; 241. gate knife block; 242. fixing frame; 243. bolt; 244. bearing. DETAILED DESCRIPTION

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In the description of the present invention, "plurality" means two or more than two, unless otherwise clearly and specifically defined.

[0025] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] See also Figure 1-4 , the utility model provides a technical solution:

[0027] A gluing roller mechanism for a digital printing machine comprises a frame 1, on which a gluing mechanism 2 and a homogenizing roller 3 are mounted, the homogenizing roller 3 and the gluing mechanism 2 are arranged in parallel, the gluing mechanism 2 comprises a glue storage box 21, a strip-shaped glue outlet 22 and a plurality of glue outlet grooves 23 are arranged at the lower end of the glue storage box 21, the plurality of glue outlet grooves 23 are arranged in an array with equal intervals on both sides of the strip-shaped glue outlet 22, and a gate knife assembly 24 is provided on the glue outlet groove 23.

[0028] In actual use, by controlling the number of glue outlet slots 23 opened, the length of the glue outlet is controlled, thereby adapting to the width of different printed materials, so that the device can adapt to printed materials of different widths and reduce glue waste.

[0029] It should be noted that when all the glue outlet slots 23 are closed and only one strip-shaped glue outlet 22 is left to discharge glue, the glue outlet width of the strip-shaped glue outlet 22 is just adapted to the narrowest material that can be printed by the digital printing machine, and thus when printing the narrowest material, too much glue is not wasted.

[0030] Preferably, a glue adding port 25 is provided at the upper end of the glue storage box 21, and the lower end of the glue storage box 21 is in a semi-cylindrical structure as a whole.

[0031] It is worth mentioning that glue for the printing machine is added to the glue storage box 21 through the glue adding port 25. Since the lower end of the glue storage box 21 is in a semi-cylindrical structure as a whole, it can adapt to the bending direction of the printing material, and the glue storage box 21 will not hinder the printing material.

[0032] Preferably, a strip through hole is opened on the side wall of the strip glue outlet 22, a knife bar 26 is movably provided in the strip through hole, an electric telescopic rod 27 is provided on the glue storage box 21, and the output end of the electric telescopic rod 27 is connected to the knife bar 26.

[0033] In actual use, the electric telescopic rod 27 drives the gate knife bar 26 to slide horizontally. When the gate knife bar 26 is no longer close to the inner wall of the strip-shaped glue outlet 22, the strip-shaped glue outlet 22 is opened. Conversely, when the gate knife bar 26 is close to the strip-shaped glue outlet 22, the strip-shaped glue outlet 22 is closed and no glue is discharged.

[0034] Preferably, a sliding through hole is opened in the side wall of the glue outlet groove 23, and the gate knife assembly 24 includes a gate knife block 241 movably arranged in the sliding through hole and a fixing frame 242 arranged on the outer side wall of the glue outlet groove 23, and a bolt 243 is threadedly connected to the fixing frame 242, and the end of the bolt 243 is connected to the outer side wall of the gate knife block 241 through a bearing 244.

[0035] In actual use, the bolt 243 is screwed to drive the gate knife block 241 to slide horizontally. When the gate knife block 241 fits the inner wall of the glue outlet groove 23, glue will no longer be discharged. On the contrary, when the gate knife block 241 no longer fits the inner wall of the glue outlet groove 23, glue will start to be discharged. By using a screwdriver to control whether the glue outlet groove 23 discharges glue,

[0036] It should be added that before actual use, according to the width of the printed material, the number of glue outlet slots 23 opened can be adjusted by a screwdriver to control the length of the glue outlet, thereby adapting to the width of different printed materials, so that the device can adapt to printed materials of different widths and reduce glue waste.

[0037] Preferably, the strip glue outlet 22 is aligned with the lower surface of the strip glue outlet 22, and the lower end surface of the strip glue outlet 22 is processed with an arc transition to the lower end surface of the strip glue outlet 22, so that the glue coating is more uniform. In actual use, the thickness of the side walls of the strip glue outlet 22 and the glue outlet groove 23 is 0.2 mm, and there is glue at the connecting gap between the strip glue outlet 22 and the glue outlet groove 23 or at the connecting gap between two adjacent glue outlet grooves 23. The glue that flows out will overflow to both sides, so there will be no glue missing. At the same time, the glue scraper 28 and the homogenizing roller 3 are provided to make the applied glue more uniform.

[0038] Preferably, the gate blade strip 26 and the gate blade block 241 are both made of rubber material, so that the sealing effect is good when sealing the strip-shaped glue outlet 22 or the glue outlet groove 23.

[0039] Preferably, a glue scraper 28 is provided on the side wall of the glue storage box 21, and the glue scraper 28 is located between the glue storage box 21 and the homogenizing roller 3. At the same time, the glue scraper 28 and the homogenizing roller 3 are provided to make the applied glue more uniform.

[0040] Working principle: Add glue for printing machine into glue storage box 21 through glue adding port 25, then in actual use, according to the width of the material to be printed, by screwing bolt 243, drive gate block 241 to slide horizontally, when gate block 241 fits with the inner wall of glue outlet slot 23, glue will no longer be discharged, on the contrary, when gate block 241 no longer fits with the inner wall of glue outlet slot 23, glue will start to be discharged, and use screwdriver to control whether glue outlet slot 23 discharges glue, and before actual use, according to the width of the material to be printed, use screwdriver to adjust the discharge width. The number of opened glue slots 23 can control the length of the glue output, thereby adapting to the width of different printed materials, so that the device can adapt to printed materials of different widths and reduce glue waste. At the same time, the electric telescopic rod 27 drives the gate knife strip 26 to slide horizontally. When the gate knife strip 26 is no longer close to the inner wall of the strip-shaped glue outlet 22, the strip-shaped glue outlet 22 is opened, and finally the glue flows out from the strip-shaped glue outlet 22 and the corresponding opened glue slots 23, and then passes through the glue scraper 28 and the homogenizing roller 3, so that the applied glue is more even.

[0041] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A rubber roller mechanism for a digital printing machine, comprising a frame (1), characterized in that: The frame (1) is provided with a gluing mechanism (2) and a homogenizing roller (3), the homogenizing roller (3) and the gluing mechanism (2) being arranged in parallel, the gluing mechanism (2) comprising a glue storage box (21), the lower end of the glue storage box (21) being provided with a strip-shaped glue outlet (22) and a plurality of glue outlet grooves (23), the plurality of glue outlet grooves (23) being arranged in an array at equal intervals on both sides of the strip-shaped glue outlet (22), and a gate knife assembly (24) being provided on the glue outlet groove (23).

2. The adhesive roller mechanism for a digital printing machine according to claim 1, characterized in that: The upper end of the glue storage box (21) is provided with a glue adding port (25), and the lower end of the glue storage box (21) is in a semi-cylindrical structure as a whole.

3. The adhesive roller mechanism for a digital printing machine according to claim 2, characterized in that: A strip-shaped through hole is provided on the side wall of the strip-shaped glue outlet (22), a knife bar (26) is movably provided in the strip-shaped through hole, an electric telescopic rod (27) is provided on the glue storage box (21), and an output end of the electric telescopic rod (27) is connected to the knife bar (26).

4. The adhesive roller mechanism for a digital printing machine according to claim 3, characterized in that: The side wall of the glue outlet groove (23) is provided with a sliding through hole, and the gate knife assembly (24) comprises a gate knife block (241) movably arranged in the sliding through hole and a fixing frame (242) arranged on the outer side wall of the glue outlet groove (23), and a bolt (243) is threadedly connected to the fixing frame (242), and the end of the bolt (243) is connected to the outer side wall of the gate knife block (241) through a bearing (244).

5. The adhesive roller mechanism for a digital printing machine according to claim 4, characterized in that: The strip-shaped glue outlet (22) is aligned with the lower surface of the strip-shaped glue outlet (22), and the lower end surface of the strip-shaped glue outlet (22) is subjected to arc transition treatment with the lower end surface of the strip-shaped glue outlet (22).

6. The adhesive roller mechanism for a digital printing machine according to claim 5, characterized in that: The gate blade strip (26) and the gate blade block (241) are both made of rubber.

7. The adhesive roller mechanism for a digital printing machine according to claim 6, characterized in that: A glue scraper (28) is provided on the side wall of the glue storage box (21), and the glue scraper (28) is located between the glue storage box (21) and the homogenizing roller (3).

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