Drum-type uva-led flexographic exposure thermal processor

Abstract

The present application relates to the technical field of plate processing machine, especially to a drum type UVA-LED flexographic exposure heat-sensitive plate processing machine, which comprises a rack, a drum for fixing a flexographic plate is rotatably arranged in the rack, a heating roller is also arranged in the rack, the heating roller is in close contact with the flexographic plate on the drum, a non-woven fabric matched with the flexographic plate is arranged between the drum and the heating roller, a conveying assembly for unwinding and winding the non-woven fabric matched with the heating roller is arranged in the rack; the conveying assembly comprises an unwinding mechanism and a winding mechanism, a tensioning mechanism for adjusting the tensioning degree is arranged in the rack; a heat dissipation assembly matched with the non-woven fabric is arranged on the rack, the heat dissipation assembly is arranged to cool the non-woven fabric and waste glue, so as to reduce the viscosity of the waste glue, and the tensioning degree of the tensioning mechanism can be adjusted, so that the waste glue is not adhered to the tensioning mechanism due to the too large tensioning degree, and the non-woven fabric is effectively prevented from being pulled and broken.

Description

Technical Field

[0001] This invention relates to the field of plate washing machine technology, and more particularly to a drum-type UVA-LED flexographic thermal plate washing machine. Background Technology

[0002] Flexographic printing plates are widely known to use flexible resin or rubber plates (flexographic relief) as printing plates and are used in printing on various substrates such as paper, cardboard, film, foil and laminate. Flexographic printing is an example of letterpress printing, in which an image is generated on a substrate by directly transferring it from the surface of a letterpress plate to the substrate.

[0003] In the production of existing flexographic printing plates, residual waste glue is usually cleaned with chemicals or waste glue is heated and then adhered with non-woven fabric to achieve the purpose of cleaning waste glue on the flexographic printing plate.

[0004] For example, Chinese Patent Publication No. CN212905899U discloses a "zero-waste flexographic plate making adhesive removal device", which changes the traditional water washing mode and uses heating and non-woven fabric bonding to remove waste adhesive, achieving zero waste discharge. However, in actual use, in order to maintain a tight connection between the non-woven fabric and the flexographic plate, it is necessary to set up a conveyor roller or tension roller to keep the non-woven fabric in a tensioned state. However, after the non-woven fabric is adhered with waste adhesive, it is easy to attach the waste adhesive to the conveyor roller or tension roller during the winding process, resulting in irregular protrusions on the conveyor roller or tension roller. This leads to uneven stress on the non-woven fabric, causing wrinkles and insufficient adhesive bonding, and it is easy for the non-woven fabric to be pulled and broken. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned shortcomings in the prior art by proposing a drum-type UVA-LED flexographic thermal plate washing machine.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a roller-type UVA-LED flexographic thermal washing machine, including a frame, in which a roller for fixing the flexographic plate is rotatably arranged, and a heating roller is also provided in the frame. The heating roller is in contact with the flexographic plate on the roller, and a non-woven fabric that cooperates with the flexographic plate is provided between the roller and the heating roller. The frame is provided with a conveying component that cooperates with the heating roller for unwinding and rewinding the non-woven fabric.

[0008] The conveying assembly includes an unwinding mechanism and a winding mechanism. The nonwoven fabric is output from the unwinding mechanism, passes through a heating roller, and is connected to the winding mechanism. The frame is equipped with a tensioning mechanism with adjustable tension.

[0009] The frame is equipped with a heat dissipation component that works with the nonwoven fabric, and the heat dissipation component is located on one side of the tensioning mechanism.

[0010] Furthermore, the tensioning mechanism includes a tensioning roller fixedly installed in the frame, a plurality of tensioning wheels rotatably installed on the tensioning roller, sliders fixedly installed on both sides of the tensioning roller, and grooves that cooperate with the sliders on both sides of the frame inner wall.

[0011] Furthermore, the slider is provided with a spring, and the groove is provided with an adjustment component for controlling the elastic strength of the spring.

[0012] Furthermore, the adjustment component includes a lifting block that is slidably disposed in the groove and fixedly connected to the spring, the lifting block having an inclined surface away from the spring, and a wedge block that cooperates with the inclined surface of the lifting block being slidably disposed in the groove.

[0013] Furthermore, a double-ended screw is rotatably provided between the two grooves, and the two ends of the double-ended screw are respectively threadedly connected to two wedge blocks.

[0014] Furthermore, the heat dissipation component includes an exhaust pipe and an intake component. Multiple supports are fixedly arranged between the exhaust pipe and the tension roller, and multiple exhaust holes are provided below the exhaust pipe.

[0015] Furthermore, the air intake assembly includes an air intake pipe and an air inlet hopper fixedly disposed below the air intake pipe. The air intake pipe is provided with multiple through holes, the air inlet hopper is inclined, and the air intake assembly is fixedly disposed inside the frame.

[0016] Furthermore, the air outlet is angled so that the air outlet direction is towards the air intake component.

[0017] Furthermore, the conveying assembly also includes a drive roller disposed within the frame for increasing the power of the nonwoven fabric.

[0018] Furthermore, a laser engraving device is slidably mounted inside the frame via guide rails, and an exposure lamp is also provided inside the frame.

[0019] The advantages of the drum-type UVA-LED flexographic thermal plate washing machine proposed in this invention are as follows:

[0020] In this invention, a heat dissipation component is used to cool down the nonwoven fabric and waste adhesive to reduce the viscosity of the waste adhesive. Since the tensioning mechanism can adjust the tension, it avoids excessive tension that could cause the waste adhesive to adhere to the tensioning mechanism, and effectively prevents the nonwoven fabric from being pulled and broken.

[0021] Secondly, in this invention, by setting multiple tensioning rollers on the tensioning roller, the contact area between waste adhesive on the nonwoven fabric and the tensioning roller is reduced, thereby reducing the possibility of waste adhesive adhesion. When it is necessary to adjust the tension of the tensioning mechanism, the double-headed screw is rotated to control the two wedge blocks to move towards or away from each other, thereby reducing or increasing the tension. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the drum-type UVA-LED flexographic thermal plate washing machine proposed in this invention;

[0023] Figure 2 This is a schematic diagram of the connection structure of the tensioning mechanism of the present invention;

[0024] Figure 3 This is a schematic diagram of the air outlet pipe of the present invention;

[0025] Figure 4 This is a schematic diagram of the air outlet structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the wedge block of the present invention.

[0027] In the diagram: 1. Frame; 11. Laser engraving device; 12. Exposure lamp; 2. Roller; 3. Heating roller; 4. Non-woven fabric; 5. Conveying assembly; 51. Unwinding mechanism; 52. Rewinding mechanism; 53. Drive roller; 6. Tensioning mechanism; 61. Tensioning roller; 62. Slider; 63. Slide groove; 64. Spring; 65. Lifting block; 66. Wedge block; 67. Double-ended screw; 7. Heat dissipation assembly; 71. Air outlet pipe; 711. Air outlet hole; 72. Air intake assembly; 721. Air intake pipe; 722. Air inlet hopper. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] Reference Figure 1-5 A roller-type UVA-LED flexographic thermal washing machine includes a frame 1, a roller 2 for fixing the flexographic plate is rotatably arranged inside the frame 1, a heating roller 3 is also provided inside the frame 1, the heating roller 3 is in contact with the flexographic plate on the roller 2, a non-woven fabric 4 that cooperates with the flexographic plate is provided between the roller 2 and the heating roller 3, and a conveying component 5 that cooperates with the heating roller 3 for unwinding and rewinding the non-woven fabric 4 is provided inside the frame 1.

[0030] The conveying assembly 5 includes an unwinding mechanism 51 and a winding mechanism 52. The nonwoven fabric 4 is output from the unwinding mechanism 51, passes through the heating roller 3, and is connected to the winding mechanism 52. The frame 1 is provided with a tensioning mechanism 6 with adjustable tension.

[0031] The frame 1 is equipped with a heat dissipation component 7 that works with the nonwoven fabric 4. The heat dissipation component 7 is located on one side of the tensioning mechanism 6.

[0032] In this invention, the flexographic board is made of a heat-sensitive material. By setting the heat dissipation component 7, the temperature of the waste adhesive is reduced, thereby reducing the viscosity of the waste adhesive and preventing it from adhering to the tensioning mechanism 6. By adjusting the tensioning force of the tensioning mechanism 6, it is possible to avoid excessive force causing the nonwoven fabric 4 to break, and also to prevent the waste adhesive from adhering to the tensioning mechanism 6 due to excessive pressure.

[0033] Furthermore, in this embodiment, the tensioning mechanism 6 includes a tensioning roller 61 fixedly installed in the frame 1. Multiple tensioning wheels are rotatably installed on the tensioning roller 61. Slider 62 is fixedly installed on both sides of the tensioning roller 61. The inner walls on both sides of the frame 1 are provided with sliding grooves 63 that cooperate with the sliders 62. The tensioning wheels reduce the contact area between the tensioning mechanism 6 and the nonwoven fabric 4, so as to reduce the possibility of adhering waste glue.

[0034] Furthermore, in this embodiment, the slider 62 is provided with a spring 64, and the slide groove 63 is provided with an adjustment component for controlling the elastic strength of the spring 64. By setting the adjustment component to control the elastic strength of the spring 64, the pressure of the tension wheel on the nonwoven fabric 4 can be adjusted. The adjustment can be made according to the actual situation to find the optimal tension force.

[0035] It should be noted that in some embodiments, the adjusting component includes a lifting block 65 that is slidably disposed in the groove 63 and fixedly connected to the spring 64. The lifting block 65 has an inclined surface away from the spring 64. A wedge block 66 that cooperates with the inclined surface of the lifting block 65 is slidably disposed in the groove 63. When the wedge block 66 is controlled to move and press against the inclined surface of the lifting block 65, the lifting block 65 will move downward, compressing the spring 64 to increase its elastic strength, thereby increasing the pressure of the tension roller 61 and the tension wheel on the nonwoven fabric 4. When it is necessary to reduce the pressure, the wedge block 66 can be moved in the opposite direction.

[0036] In this embodiment, a double-ended screw 67 is rotatably arranged between the two slide grooves 63. The two ends of the double-ended screw 67 are threadedly connected to two wedge blocks 66 respectively. When the double-ended screw 67 rotates clockwise, it drives the two wedge blocks 66 to move away from each other and press against the inclined surface of the lifting block 65, causing the lifting block 65 to move downward and compress the spring 64 to increase its elastic strength. In some embodiments, a guide post is provided below the lifting block 65 to fix the spring 64.

[0037] In this embodiment, the heat dissipation component 7 includes an air outlet pipe 71 and an air suction component 72. Multiple supports are fixedly arranged between the air outlet pipe 71 and the tension roller 61. Multiple air outlet holes 711 are provided below the air outlet pipe 71. The air outlet pipe 71 is connected to an external fan. The air suction component 72 is connected to an external waste gas recovery device. By blowing air through the air outlet holes 711, the heat of the waste adhesive on the nonwoven fabric 4 is reduced, thereby reducing the temperature of the waste adhesive and reducing its stickiness, so that it adheres firmly to the nonwoven fabric 4 and avoids sticking to the tension roller.

[0038] Furthermore, in this embodiment, the air suction assembly 72 includes an air suction pipe 721 and an air inlet 722 fixedly disposed below the air suction pipe 721. The air suction pipe 721 is provided with multiple through holes, and the air inlet 722 is inclined. The air suction assembly 72 is fixedly disposed inside the frame 1. When the air outlet pipe 71 blows air, the gas blown out reduces the heat of the waste adhesive on the nonwoven fabric 4 and is absorbed by the air inlet 722 of the air suction assembly 72, carrying away the odor emitted by the waste adhesive, thereby reducing environmental pollution.

[0039] In detail, in this embodiment, the air outlet 711 is inclined so that the air outlet direction is towards the air intake component 72. When the air outlet 711 blows air, the inclined air dissipates heat on the non-woven fabric 4 and the attached waste adhesive, forming waste gas that absorbs heat. The non-woven fabric 4 blocks the waste gas and changes its angle, causing it to move towards the air intake hopper 722, thereby improving the waste gas recovery effect.

[0040] In some embodiments, the conveying assembly 5 further includes a drive roller 53 disposed within the frame 1 for increasing the power of the nonwoven fabric 4, preventing the nonwoven fabric 4 from being pulled apart by the winding mechanism 52 due to excessive resistance when it is bonded to the flexographic plate on the roller 2.

[0041] In some embodiments, a laser engraving device 11 is slidably arranged in the frame 1 via a guide rail, and an exposure lamp 12 is also provided in the frame 1 to realize the engraving and exposure of the flexographic plate, and then the plate is washed by the non-woven fabric 4, making the production of flexographic printing plates more convenient.

[0042] Working method: During operation, the nonwoven fabric 4 is led out from the unwinding mechanism 51, and is connected to the winding mechanism 52 through the drive roller 53, the heating roller 3 and the tensioning mechanism 6 to form a winding and unwinding mechanism. When the nonwoven fabric 4 passes through the heating roller 3, the heating roller 3 heats the nonwoven fabric 4 and the waste glue on the flexographic plate, increases the stickiness of the waste glue so that it adheres to the nonwoven fabric 4, and is conveyed to the winding mechanism 52 to complete the washing of the flexographic plate, and exposes the flexographic plate through the exposure lamp 12.

[0043] When the nonwoven fabric 4 carrying waste adhesive passes through the heat dissipation component 7, the temperature of the waste adhesive decreases, which reduces its viscosity and prevents it from adhering to the tensioning mechanism 6.

[0044] When the heat dissipation component 7 dissipates heat from the waste adhesive, the air outlet 711 blows air, and the air is tilted to dissipate heat from the non-woven fabric 4 and the attached waste adhesive, forming waste gas that absorbs heat. The non-woven fabric 4 blocks the air and changes the angle, causing it to move towards the air inlet 722. It is then absorbed by the air inlet 722 of the suction component 72, carrying away the heat and odor emitted by the waste adhesive, thereby reducing environmental pollution.

[0045] By rotating the double-headed screw 67, the position of the wedge block 66 is controlled. When the wedge block 66 moves to press the inclined surface of the lifting block 65, the lifting block 65 will move downward, compressing the spring 64 to increase its elastic strength, thereby increasing the pressure of the tension roller 61 and the tension wheel on the nonwoven fabric 4. When it is necessary to reduce the pressure, the double-headed screw 67 can be rotated in the opposite direction.

[0046] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A drum-type UVA-LED flexographic thermal plate washing machine, comprising a frame (1), characterized in that, The frame (1) is rotatably equipped with a roller (2) for fixing the flexible sheet. The frame (1) is also equipped with a heating roller (3). The heating roller (3) is in contact with the flexible sheet on the roller (2). A non-woven fabric (4) that cooperates with the flexible sheet is provided between the roller (2) and the heating roller (3). The frame (1) is equipped with a conveying assembly (5) that cooperates with the heating roller (3) for unwinding and rewinding the non-woven fabric (4). The conveying assembly (5) includes an unwinding mechanism (51) and a winding mechanism (52). The nonwoven fabric (4) is output from the unwinding mechanism (51), passes through the heating roller (3), and is connected to the winding mechanism (52). The frame (1) is provided with a tensioning mechanism (6) with adjustable tension. The tensioning mechanism (6) is located between the heating roller (3) and the winding mechanism (52). By adjusting the tension of the tensioning mechanism (6), the nonwoven fabric (4) is prevented from breaking due to excessive tension, and waste glue is also prevented from adhering to the tensioning mechanism (6) due to excessive pressure. The frame (1) is provided with a heat dissipation component (7) that cooperates with the nonwoven fabric (4). The heat dissipation component (7) is located on one side of the tensioning mechanism (6) and between the heating roller (3) and the tensioning mechanism (6). When the nonwoven fabric (4) carrying waste glue passes through the heat dissipation component (7), the temperature of the waste glue decreases, which reduces its viscosity and prevents it from adhering to the tensioning mechanism (6).

2. The drum-type UVA-LED flexographic thermal plate washing machine according to claim 1, characterized in that: The tensioning mechanism (6) includes a tensioning roller (61) fixedly installed in the frame (1). Multiple tensioning wheels are rotatably installed on the tensioning roller (61). Slider (62) is fixedly installed on both sides of the tensioning roller (61). Slider grooves (63) that cooperate with sliders (62) are provided on the inner walls of both sides of the frame (1).

3. The drum-type UVA-LED flexographic thermal plate washing machine according to claim 2, characterized in that: The slider (62) is provided with a spring (64), and the groove (63) is provided with an adjustment component for controlling the elastic strength of the spring (64).

4. The drum-type UVA-LED flexographic thermal plate washing machine according to claim 3, characterized in that: The adjustment assembly includes a lifting block (65) that is slidably disposed in a groove (63) and fixedly connected to a spring (64). The lifting block (65) has an inclined surface away from the spring (64). A wedge block (66) that cooperates with the inclined surface of the lifting block (65) is slidably disposed in the groove (63).

5. The drum-type UVA-LED flexographic thermal plate washing machine according to claim 4, characterized in that: A double-ended screw (67) is rotatably disposed between the two grooves (63), and the two ends of the double-ended screw (67) are threadedly connected to two wedge blocks (66) respectively.

6. The drum-type UVA-LED flexographic thermal plate washing machine according to claim 2, characterized in that: The heat dissipation assembly (7) includes an air outlet pipe (71) and an air intake assembly (72). Multiple supports are fixedly arranged between the air outlet pipe (71) and the tension roller (61). Multiple air outlet holes (711) are provided below the air outlet pipe (71).

7. The drum-type UVA-LED flexographic thermal plate washing machine according to claim 6, characterized in that: The air intake assembly (72) includes an air intake pipe (721) and an air intake hopper (722) fixedly disposed below the air intake pipe (721). The air intake pipe (721) is provided with multiple through holes, and the air intake hopper (722) is inclined. The air intake assembly (72) is fixedly disposed inside the frame (1).

8. The drum-type UVA-LED flexographic thermal plate washing machine according to claim 7, characterized in that: The air outlet (711) is inclined so that the air outlet direction is towards the air intake component (72).

9. The drum-type UVA-LED flexographic thermal plate washing machine according to claim 1, characterized in that: The conveying assembly (5) also includes a drive roller (53) disposed within the frame (1) for increasing the power of the nonwoven fabric (4).

10. The drum-type UVA-LED flexographic thermal plate washing machine according to claim 1, characterized in that: A laser engraving device (11) is slidably mounted inside the frame (1) via a guide rail, and an exposure lamp (12) is also provided inside the frame (1).

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