An ultraviolet irradiation assisted positioning device for flexographic plate making

Abstract

The utility model discloses a kind of ultraviolet irradiation auxiliary positioning devices for flexible plate making, including fixed platform, cross, moving plate and cover plate, fixed platform has the plane of bearing board material, plane upper end is provided with marking coating, marking coating is invisible under ordinary light, cross is connected with fixed platform by support plate, cross is located above plane, and the top of cross is provided with shell, ultraviolet exposure lamp is installed in shell, moving plate and cross slidingly fit, moving plate can be moved to cover or expose ultraviolet exposure lamp, moving plate lower side is provided with ultraviolet strip lamp, ultraviolet strip lamp can be irradiated on marking coating and show positioning area, cover plate is connected with moving plate by servo cylinder body, and servo cylinder body is used for the plate material placed in positioning area by cover plate crimping;Realize the positioning placement of plate material to be exposed, reduce cost, and plate material keeps flat, to solidify form firm bottom plate, make bottom plate thickness uniform, guarantee the consistency of printing pressure.

Description

Technical Field

[0001] This utility model relates to the field of flexible plate making technology, specifically to an ultraviolet irradiation-assisted positioning device for flexible plate making. Background Technology

[0002] Flexographic printing refers to the process of creating a printing plate with elastic, raised graphic elements. This plate is then mounted on a printing cylinder, and water-based or UV inks are transferred through an anilox roller to print on various substrates. Its applications are extremely wide, mainly concentrated in the packaging printing industry, because it has advantages such as wide substrate adaptability, environmental friendliness, and high efficiency.

[0003] The first step in flexible plate making is to establish a stable base, which involves exposing the plate to ultraviolet light from the back side. The back side of the plate is facing the light source for uniform exposure. The light passes through the entire thickness of the plate, causing a polymerization reaction in the bottom area of ​​the plate, which then solidifies to form a stable base plate.

[0004] Ensuring the flexographic plate is placed flat during back exposure is fundamental to ensuring plate quality. If the plate is not placed flat, it will lead to uneven base thickness, which in turn will affect the consistency of printing pressure and even cause premature wear of the printing plate in certain areas. To address this issue, this invention proposes an ultraviolet irradiation-assisted positioning device for flexographic plate making that can solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an ultraviolet irradiation-assisted positioning device for flexographic plate making, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an ultraviolet irradiation-assisted positioning device for flexographic plate making, comprising:

[0007] A fixed platform has a flat surface for supporting a plate, and a marking coating is provided on the upper end of the flat surface. The marking coating is not visible under normal light.

[0008] A crossbeam is connected to the fixed platform via a support plate. The crossbeam is located above the plane, and a housing is provided on the top of the crossbeam, with an ultraviolet exposure lamp installed inside the housing.

[0009] A sliding plate is slidably fitted into the cross frame. The sliding plate can move to cover or expose the ultraviolet exposure lamp. An ultraviolet strip lamp is provided on the underside of the sliding plate. The ultraviolet strip lamp can illuminate the marking coating to display the positioning area.

[0010] The cover plate is connected to the moving plate via a servo cylinder, which is used to press the cover plate against the plate placed in the positioning area.

[0011] As a preferred technical solution, an operation switch is installed on the crossbeam, and the operation switch is connected to the signals of the ultraviolet exposure lamp, ultraviolet light, and servo cylinder bar lamp.

[0012] As a preferred technical solution, the rear end of the moving plate is connected to a straight bar, and side light-shielding plates are respectively provided on both sides of the straight bar. The two sets of side light-shielding plates are movably inserted through the support plate.

[0013] As a preferred technical solution, the two sets of side light shields are connected to a front light shield.

[0014] As a preferred technical solution, the moving plate is connected to a pull plate, and the crossbar has a straight groove for the pull plate to pass through.

[0015] As a preferred technical solution, two sets of positioning sleeves are provided on one side of the cross frame, a traction rod is passed through the pull plate, the traction rod is connected to a pin block that can be inserted into a set of the fixed platform, and a spring is wound around the traction rod.

[0016] As a preferred technical solution, the outer ends of the two sets of positioning sleeves are respectively provided with guide rings, and the diameter of the guide rings gradually increases from the inside to the outside.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This method allows for the precise positioning of the substrate to be exposed, reducing costs, maintaining a clean work area without increasing visual clutter, and ensuring the substrate remains flat. The back of the substrate is exposed using a UV exposure lamp, which then cures it to form a stable base plate with uniform thickness, guaranteeing consistent printing pressure. Attached Figure Description

[0019] Figure 1 This is a first-angle view of the overall structure;

[0020] Figure 2 This is a first-angle view of the overall structure;

[0021] Figure 3 This is a schematic diagram showing the sliding engagement of the sliding plate and the crossbar;

[0022] In the diagram: 10. Fixed platform; 11. Plane; 12. Support plate; 20. Cross frame; 21. Housing; 22. Operating switch; 23. Positioning sleeve; 30. Moving plate; 31. Straight bar; 32. Side light shield; 33. Front light shield; 34. Ultraviolet strip lamp; 35. Servo cylinder; 36. Cover plate; 37. Pull plate; 38. Traction rod; 39. Pin block. Detailed Implementation

[0023] The following is a detailed description, with reference to the accompanying drawings, of an ultraviolet irradiation-assisted positioning device for flexographic plate making according to embodiments of the present disclosure. To make the objectives, technical solutions, and advantages of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present disclosure.

[0024] Therefore, the following detailed description of embodiments of the present disclosure provided in conjunction with the accompanying drawings is not intended to limit the scope of the claimed disclosure, but merely to illustrate selected embodiments of the disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of the present disclosure without inventive effort are within the scope of protection of the present disclosure.

[0025] Example 1

[0026] Please refer to 1. The fixed table 10 has a flat surface 11 for supporting the plate. A marking coating is provided on the upper end of the flat surface 11. The marking coating is not visible under normal light, which keeps the work area clean, avoids visual interference, and does not contaminate the surface of the plate. The marking coating is sensitive to ultraviolet light.

[0027] Please refer to 2. The cross frame 20 is connected to the fixed platform 10 through the support plate 12. The cross frame 20 is located above the plane 11, and a housing 21 is provided on the top of the cross frame 20. An ultraviolet exposure lamp is installed in the housing 21. The ultraviolet exposure lamp is used to expose the back of the plate with ultraviolet light. The moving plate 30 is slidably fitted with the cross frame 20. The moving plate 30 can be moved to cover or expose the ultraviolet exposure lamp. During the positioning and placement of the plate, the moving plate 30 covers the ultraviolet exposure lamp. After the plate is positioned and placed, the moving plate 30 moves to expose the ultraviolet exposure lamp.

[0028] Please refer to 3. An ultraviolet strip lamp 34 is provided on the lower side of the moving plate 30. The cover plate 36 is connected to the moving plate 30 through the servo cylinder 35. The vertical projection of the cover plate 36 is located in the positioning area. During the above-mentioned positioning and placement of the material, the positioning area is displayed by the ultraviolet strip lamp 34 illuminating the marking coating. The material to be ultraviolet exposed is placed in the positioning area with its back facing up. Then, the servo cylinder 35 is controlled to drive the cover plate 36 to press the material placed in the positioning area, so that the material is placed flat. Compared with the high-precision laser that can project straight lines, the cost is greatly reduced. Moreover, under normal lighting, the marking coating is invisible, keeping the working area clean and not increasing visual clutter. Positioning can be carried out in a dark environment.

[0029] Please refer to 1. An operation switch 22 is installed on the crossbar 20. The operation switch 22 has three sets of operation buttons. The three sets of operation buttons are respectively connected to the UV exposure lamp, UV light and the servo cylinder 35 lamp signal. The three sets of operation buttons are marked with OFF and ON. The servo cylinder 35 drives the cover plate 36 to move downward by a distance in advance according to the subsequent preset of the plate material.

[0030] Example 2

[0031] Please refer to 1. The fixed table 10 has a flat surface 11 for supporting the plate. A marking coating is provided on the upper end of the flat surface 11. The marking coating is not visible under normal light, which keeps the work area clean, avoids visual interference, and does not contaminate the surface of the plate. The marking coating is sensitive to ultraviolet light.

[0032] Please refer to 2. The cross frame 20 is connected to the fixed platform 10 through the support plate 12. The cross frame 20 is located above the plane 11, and a housing 21 is provided on the top of the cross frame 20. An ultraviolet exposure lamp is installed in the housing 21. The ultraviolet exposure lamp is used to expose the back of the plate with ultraviolet light. The moving plate 30 is slidably fitted with the cross frame 20. The moving plate 30 can be moved to cover or expose the ultraviolet exposure lamp. During the positioning and placement of the plate, the moving plate 30 covers the ultraviolet exposure lamp. After the plate is positioned and placed, the moving plate 30 moves to expose the ultraviolet exposure lamp.

[0033] Please refer to 3. An ultraviolet strip lamp 34 is provided on the lower side of the moving plate 30. The cover plate 36 is connected to the moving plate 30 through the servo cylinder 35. The vertical projection of the cover plate 36 is located in the positioning area. During the above-mentioned positioning and placement of the material, the positioning area is displayed by the ultraviolet strip lamp 34 illuminating the marking coating. The material to be ultraviolet exposed is placed in the positioning area with its back facing up. Then, the servo cylinder 35 is controlled to drive the cover plate 36 to press the material placed in the positioning area, so that the material is placed flat. Compared with the high-precision laser that can project straight lines, the cost is greatly reduced. Moreover, under normal lighting, the marking coating is invisible, keeping the working area clean and not increasing visual clutter. Positioning can be carried out in a dark environment.

[0034] Please refer to 1. An operation switch 22 is installed on the crossbar 20. The operation switch 22 has three sets of operation buttons. The three sets of operation buttons are respectively connected to the UV exposure lamp, UV light and the servo cylinder 35 lamp signal. The three sets of operation buttons are marked with OFF and ON. The servo cylinder 35 drives the cover plate 36 to move downward by a distance in advance according to the subsequent preset of the plate material.

[0035] Please refer to 2. The rear end of the shift plate 30 is connected to a straight bar 31. Side light shields 32 are respectively provided on both sides of the straight bar 31. The two sets of side light shields 32 are movably inserted on the support plate 12. The two sets of side light shields 32 are connected to a front light shield 33. When back exposure is performed, the front light shield 33, the support plate 12 and the two sets of side light shields 32 play a role in blocking the ultraviolet rays of the exposure, and provide good protection.

[0036] Please refer to 3. The moving plate 30 is connected to the pull plate 37. The cross frame 20 has a straight groove for the pull plate 37 to pass through. Two sets of positioning sleeves 23 are provided on one side of the cross frame 20. The pull plate 37 is provided with a traction rod 38. The traction rod 38 is connected to a pin block 39 that can be inserted into a set of fixed platforms. The traction rod 38 is wound with a spring. The outer ends of the two sets of positioning sleeves 23 are respectively provided with guide rings. The diameter of the guide rings gradually increases from the inside to the outside.

[0037] During the positioning and placement of the board, the pin 39 is inserted into a set of positioning sleeves 23 to position and restrict the moving plate 30. After the board is positioned and placed, the pin 39 is disengaged from the set of positioning sleeves 23 by pulling the traction rod 38. Then the moving plate 30 is moved to expose the ultraviolet exposure lamp, so that the pin 39 is inserted into another set of positioning sleeves 23. Thus, the moving plate 30 is positioned and restricted again during the back exposure process. The guide ring is set to guide the insertion of the pin 39.

[0038] Working principle:

[0039] This UV-irradiation-assisted positioning device for flexographic plate making is used in a cleanroom, and staff must wear UV-protective gloves and sunglasses. The transfer plate 30 covers the UV exposure lamp, and the UV strip lamp 34 illuminates the positioning area on the marked coating on the plane 11. The plate with light-shielding strips around it is placed in the positioning area, and then the UV strip lamp 34 is turned off. Then, the servo cylinder 35 is controlled to drive the cover plate 36 to press the plate placed in the positioning area. After the plate is placed flat, the cover plate 36 is reset upwards. Then, the transfer plate 30 is moved to expose the UV exposure lamp, and the back of the plate is exposed by the UV exposure lamp, thereby curing and forming a stable base plate with uniform thickness to ensure consistent printing pressure.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A UV-irradiation-assisted positioning device for flexographic plate making, characterized in that, include: A fixed platform has a flat surface for supporting a plate, and a marking coating is provided on the upper end of the flat surface. The marking coating is not visible under normal light. A crossbeam is connected to the fixed platform via a support plate. The crossbeam is located above the plane, and a housing is provided on the top of the crossbeam, with an ultraviolet exposure lamp installed inside the housing. A sliding plate is slidably fitted into the cross frame. The sliding plate can move to cover or expose the ultraviolet exposure lamp. An ultraviolet strip lamp is provided on the underside of the sliding plate. The ultraviolet strip lamp can illuminate the marking coating to display the positioning area. The cover plate is connected to the moving plate via a servo cylinder, which is used to press the cover plate against the plate placed in the positioning area.

2. The ultraviolet irradiation-assisted positioning device for flexographic plate making according to claim 1, characterized in that, An operating switch is installed on the crossbeam, and the operating switch is connected to the signals of the ultraviolet exposure lamp, ultraviolet light, and servo cylinder bar light.

3. The ultraviolet irradiation-assisted positioning device for flexographic plate making according to claim 1, characterized in that, The rear end of the moving plate is connected to a straight bar, and side light-shielding plates are respectively provided on both sides of the straight bar. The two sets of side light-shielding plates are movably inserted through the support plate.

4. The ultraviolet irradiation-assisted positioning device for flexographic plate making according to claim 3, characterized in that, The two sets of side shading panels are connected to a front shading panel.

5. The ultraviolet irradiation-assisted positioning device for flexographic plate making according to claim 1, characterized in that, The moving plate is connected to a pull plate, and the cross frame has a straight groove for the pull plate to pass through.

6. The ultraviolet irradiation-assisted positioning device for flexographic plate making according to claim 5, characterized in that, Two sets of positioning sleeves are provided on one side of the cross frame, and a traction rod is passed through the pull plate. The traction rod is connected to a pin block that can be inserted into a set of the fixed platform, and a spring is wound around the traction rod.

7. The ultraviolet irradiation-assisted positioning device for flexographic plate making according to claim 6, characterized in that, The outer ends of the two sets of positioning sleeves are respectively provided with guide rings, and the diameter of the guide rings gradually increases from the inside to the outside.

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