Plate-seam-free transfer printing equipment
By optimizing the high-temperature and low-temperature area configuration of plate rollers in the plate-free seam transfer equipment, seamless docking of holographic patterns and improving the quality of printed materials is achieved, and the problem of waste of plate-slits and printed materials in the existing molding methods is solved.
Patent Information
- Application Number
- CN202420917205.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-04-29
AI Technical Summary
The existing molding method has plate joint problems in the production of laser holographic anti-counterfeiting products, resulting in discontinuous print patterns, inability to cut arbitrarily, wasted prints, and the patterns and colors of the double-imprinting method are different, and the quality of the prints is poor.
Design a plate-free seam transfer equipment, using the first and second plate rollers, which occupy three-quarters and one-quarter of the roller surface respectively, and occupy one-quarter and three-quarters of the roller surface respectively. It is a low-temperature area and is imprinted through the corresponding high-temperature and low-temperature areas to ensure continuous and seamless pattern connection.
The seamless docking of holographic patterns is achieved, the printing quality of printed materials is improved, the plate seams are eliminated, and the problems of waste of printed materials and different patterns are avoided.
Smart Images
Figure CN222136232U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to printing equipment, in particular to seamless transfer printing equipment. Background Art
[0002] In the production process of laser rainbow film, laser holographic anti-counterfeiting trademark, vacuum aluminum-plated paper for anti-counterfeiting, etc., embossing is one of the extremely important core links. At present, embossing usually adopts single embossing or double embossing. The single embossing method is to cut a fixed size of laser holographic nickel plate according to the amplitude of the anti-counterfeiting product, and wrap it on the surface of the roller for embossing. This embossing method has a high embossing efficiency, but because there will be gaps when the nickel plate is wrapped on the surface of the roller, there will also be plate seams on the printed product during embossing. The pattern is not continuous and cannot be cut to any length, which will also cause waste of printed products. The double-stamping method uses two rollers to stamp the printed matter twice in succession. The two rollers are respectively provided with a high-temperature area and a low-temperature area, and the high-temperature areas on the two rollers complement each other. During stamping, the printed matter first passes through the high-temperature area of the first roller and is stamped with a pattern. When passing through the low-temperature area, no pattern is stamped, forming a blank area. Then, when the printed matter passes through the second roller, the high-temperature area of the second roller corresponds to the blank area of the printed matter, and stamps the pattern on the blank area. The two stampings together form a coherent pattern. Although this stamping method can avoid To avoid wasting printed materials, however, in the currently used plate rollers, the high-temperature area and the low-temperature area usually occupy half of the roller surface (that is, the area corresponding to 180° in the plate roller is the high-temperature area, and the area corresponding to the other 180° is the low-temperature area). Therefore, when the printed material completes the first printing and contacts the second plate roller, the low-temperature area on the second plate roller will contact the printed area and cool the printed area, causing the pattern and color on the printed area to fade, making the patterns and colors of the two printings different, and the plate seam can be clearly seen at the joint, resulting in poor printing quality of the printed material. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a seamless transfer device, which can eliminate the plate seam during transfer, realize the seamless connection of holographic patterns, and improve the printing quality of printed products.
[0004] In order to solve the above technical problems, the technical solutions adopted are as follows:
[0005] A seamless transfer device comprises a frame, an unwinding device, a first molding device, a second molding device and a winding device, wherein the unwinding device, the first molding device, the second molding device and the winding device are respectively mounted on the frame and arranged in sequence along the conveying direction, the first molding device is provided with a first version roller, the second molding device is provided with a second version roller, the roller surfaces of the first version roller and the second version roller respectively have a high temperature area and a low temperature area, and the device is characterized in that: the high temperature area of the roller surface of the first version roller occupies three quarters of the area of the first version roller, and the low temperature area of the roller surface of the first version roller occupies one quarter of the area of the first version roller; the high temperature area of the roller surface of the second version roller occupies one quarter of the area of the second version roller, and the low temperature area of the roller surface of the second version roller occupies three quarters of the area of the second version roller; the high temperature area of the first version roller corresponds to the position of the low temperature area of the second version roller, and the low temperature area of the first version roller corresponds to the position of the high temperature area of the second version roller.
[0006] In the above-mentioned seamless transfer device, the high-temperature areas on the roller surfaces of the first roller and the second roller are both embossing areas, and the pattern of the embossing area on the first roller and the pattern of the embossing area on the second roller are continuous patterns. When printing, the printed matter is unwound from the unwinding device, and the first roller and the second roller emboss the printed matter respectively; during the embossing process, the printed matter first contacts the first roller, and when the printed matter contacts the high-temperature area on the first roller, the pattern on the embossing area of the first roller is embossed on the printed matter, and when the printed matter contacts the low-temperature area on the first roller, the pattern will not be embossed on the printed matter, and a blank area will be formed; then the printed matter contacts the second roller, and the embossed area on the printed matter will overlap with the entire low-temperature area on the second roller, and the blank area on the printed matter will overlap with the high-temperature area on the second roller, and at this time, the pattern on the embossing area of the second roller will be embossed on the blank area, and the newly embossed pattern and the embossed pattern together constitute a continuous complete pattern.
[0007] When this seamless transfer device is printing, the first roller prints the printed matter first. Since the high-temperature area in the first roller occupies three-quarters of the area of the first roller, the printed area on the printed matter also accounts for a large proportion, and the temperature of the printed area is relatively high at this time; when the printed matter passes through the second roller, the printed area will first pass through the low-temperature area of the second roller, and the temperature will be reduced under the action of the low-temperature area, and the pattern and color of the printed area will fade; at the same time, since the low-temperature area on the second roller accounts for a larger proportion than the high-temperature area, the temperature of the high-temperature area on the second roller is lower than that of the high-temperature area of the first roller. After the blank area on the printed matter passes through the high-temperature area of the second roller, the printed pattern and color will be closer to the printed area after cooling. Therefore, there will be no visible seam between the two areas that are printed separately, and the seamless connection of the holographic pattern can be achieved, thereby improving the printing quality of the printed matter.
[0008] The unwinding device and the winding device can both adopt existing unwinding and winding mechanisms. The first molding device usually also includes a first pressing roller tangent to the roller surface of the first roller and a first rotation driving mechanism capable of driving the first roller to rotate; the second molding device usually also includes a second pressing roller tangent to the roller surface of the second roller and a second rotation driving mechanism capable of driving the second roller to rotate.
[0009] In a preferred embodiment, the first roller comprises a first roller body and a second roller body, and the first roller body and the second roller body are detachably connected. When the first roller body and the second roller body are connected, the outer surfaces of the first roller body and the second roller body together constitute the roller surface of the first roller, and the outer surface of the first roller body constitutes the high temperature area of the first roller, and the outer surface of the second roller body constitutes the low temperature area of the first roller; a first hot oil cavity is provided inside the first roller body, and a first cold oil cavity is provided inside the second roller body. The first hot oil cavity in the first roller body can be heated by passing hot oil, and the first cold oil cavity in the second roller body can be cooled by passing cold oil.
[0010] In a further preferred embodiment, the first roller body is provided with a first engaging member, the second roller body is provided with a second engaging member matching the first engaging member, the second roller body is also provided with a plurality of first through holes arranged along the length direction, and the first roller body is provided with a plurality of first screw holes corresponding to the first through holes. When the first roller body and the second roller body are connected, the positions are first fixed by engaging the first engaging member and the second engaging member, and then the screw is passed through the first through hole and connected to the first screw hole, so that the second roller body is locked on the first roller body, and together they constitute the first version roller. Since the second roller body corresponds to the low temperature area of the first version roller, the through holes in the second roller body will not affect the embossing.
[0011] In a further preferred embodiment, the first engaging member is a first engaging block provided on the first roller body, the second engaging member is a first engaging groove provided on the second roller body, and the first engaging block corresponds to the first engaging groove in shape and position.
[0012] In a preferred embodiment, the second roll includes a third roll body and a fourth roll body, and the third roll body and the fourth roll body are detachably connected. When the third roll body and the fourth roll body are connected, the outer surfaces of the third roll body and the fourth roll body together constitute the roll surface of the second roll, and the outer surface of the third roll body constitutes the high temperature area of the second roll, and the outer surface of the fourth roll body constitutes the low temperature area of the second roll; a second hot oil cavity is provided inside the third roll body, and a second cold oil cavity is provided inside the fourth roll body. The second hot oil cavity in the third roll body can be heated by hot oil, and the second cold oil cavity in the fourth roll body can be cooled by cold oil.
[0013] In a further preferred embodiment, the third roller body is provided with a third engaging member, the fourth roller body is provided with a fourth engaging member matching the third engaging member, the fourth roller body is also provided with a plurality of second through holes arranged along the length direction, and the third roller body is provided with a plurality of second screw holes corresponding to the second through holes. When the third roller body and the fourth roller body are connected, the positions are first fixed by engaging the third engaging member and the fourth engaging member, and then the screw is passed through the second through hole and connected to the second screw hole, so that the fourth roller body is locked on the third roller body, and together they form the second version roller. Since the fourth roller body corresponds to the low temperature area of the second version roller, the opening of the through hole on the fourth roller body will not affect the embossing.
[0014] In a further preferred embodiment, the third engaging member is a second engaging block provided on the third roller body, the fourth engaging member is a second engaging groove provided on the fourth roller body, and the second engaging block corresponds to the second engaging groove in shape and position.
[0015] The beneficial effect of the utility model is that the seamless transfer device can eliminate the plate seam during transfer, realize the seamless connection of the holographic pattern, and improve the printing quality of the printed product. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of the seamless transfer device in the embodiment of the utility model;
[0017] Figure 2 It is a schematic diagram of the structure of the first printing plate roller or the second printing plate roller in the embodiment of the utility model;
[0018] Figure 3 It is a side view of the first version roller or the second version roller in the embodiment of the utility model. DETAILED DESCRIPTION
[0019] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:
[0020] like Figure 1-3The seamless transfer device shown in the figure comprises a frame 1, an unwinding device 2, a first molding device 3, a second molding device 4 and a winding device 5, wherein the unwinding device 2, the first molding device 3, the second molding device 4 and the winding device 5 are respectively mounted on the frame 1 and arranged in sequence along the conveying direction, the first molding device 3 is provided with a first printing roller 301, the second molding device 4 is provided with a second printing roller 401, the roller surfaces of the first printing roller 301 and the second printing roller 401 respectively have a high temperature area and a low temperature area, and the roller surface of the first printing roller 301 The high temperature area occupies three quarters of the first version roller 301, and the low temperature area on the roller surface of the first version roller 301 occupies one quarter of the first version roller 301; the high temperature area on the roller surface of the second version roller 401 occupies one quarter of the second version roller 401, and the low temperature area on the roller surface of the second version roller 401 occupies three quarters of the second version roller 401; the high temperature area of the first version roller 301 corresponds to the low temperature area of the second version roller 401, and the low temperature area of the first version roller 301 corresponds to the high temperature area of the second version roller 401.
[0021] In the seamless transfer device, the high temperature areas on the roller surfaces of the first roller 301 and the second roller 401 are both embossing areas, and the pattern of the embossing area on the first roller 301 and the pattern of the embossing area on the second roller 401 are continuous patterns. When printing, the printed matter is unwound from the unwinding device 2, and the first roller 301 and the second roller 401 respectively imprint the printed matter; during the imprinting process, the printed matter first contacts the first roller 301, and when the printed matter contacts the high temperature area of the first roller 301, the pattern on the imprinting area of the first roller 301 is imprinted on the printed matter, and when the printed matter contacts the low temperature area of the first roller 301, no pattern is imprinted on the printed matter, and a blank area is formed; then the printed matter contacts the second roller 401, and the imprinted area on the printed matter overlaps with the entire low temperature area of the second roller 401, and the blank area on the printed matter overlaps with the high temperature area of the second roller 401, and at this time, the pattern on the imprinting area of the second roller 401 is imprinted on the blank area, and the newly imprinted pattern and the imprinted pattern together constitute a continuous complete pattern.
[0022] When this seamless transfer device is used for printing, the first roller 301 first prints the printed matter. Since the high temperature area of the first roller 301 occupies three quarters of the area of the first roller 301, the printed area on the printed matter also occupies a large proportion, and the temperature of the printed area is relatively high at this time. When the printed matter passes through the second roller 401, the printed area will first pass through the low temperature area of the second roller 401, and the temperature will be reduced under the action of the low temperature area, and the pattern and color of the printed area will fade. At the same time, since the low temperature area accounts for a larger proportion than the high temperature area in the second roller 401, the temperature of the high temperature area of the second roller 401 is lower than that of the high temperature area of the first roller 301. After the blank area on the printed matter passes through the high temperature area of the second roller 401, the printed pattern and color will be closer to the printed area after cooling. Therefore, there will be no visible seam between the two areas that are printed separately, and the seamless connection of the holographic pattern can be achieved, thereby improving the printing quality of the printed matter.
[0023] The unwinding device 2 and the winding device 5 can both adopt existing unwinding and winding mechanisms. The first molding device 3 also includes a first pressing roller 302 tangent to the roller surface of the first version roller 301 and a first rotation driving mechanism capable of driving the first version roller 301 to rotate; the second molding device 4 also includes a second pressing roller 402 tangent to the roller surface of the second version roller 401 and a second rotation driving mechanism capable of driving the second version roller 401 to rotate.
[0024] The first roller 301 includes a first roller body 3011 and a second roller body 3012, which are detachably connected. When the first roller body 3011 and the second roller body 3012 are connected, the outer surfaces of the first roller body 3011 and the second roller body 3012 together constitute the roller surface of the first roller 301, and the outer surface of the first roller body 3011 constitutes the high temperature area of the first roller 301, and the outer surface of the second roller body 3012 constitutes the low temperature area of the first roller 301; a first hot oil cavity is provided inside the first roller body 3011, and a first cold oil cavity is provided inside the second roller body 3012. Hot oil can be introduced into the first hot oil cavity in the first roller body 3011 for heating, and cold oil can be introduced into the first cold oil cavity in the second roller body 3012 for cooling.
[0025] The first roller body 3011 is provided with a first engaging piece, the second roller body 3012 is provided with a second engaging piece matching the first engaging piece, the second roller body 3012 is also provided with a plurality of first through holes arranged along the length direction, and the first roller body 3011 is provided with a plurality of first screw holes corresponding to the first through holes. When the first roller body 3011 and the second roller body 3012 are connected, the positions are first fixed by the engagement of the first engaging piece and the second engaging piece, and then the screws are passed through the first through holes and connected to the first screw holes, so that the second roller body 3012 is locked on the first roller body 3011, and together they constitute the first printing roller 301. Since the second roller body 3012 corresponds to the low temperature area of the first printing roller 301, the through holes in the second roller body 3012 will not affect the embossing.
[0026] The first engaging member is a first engaging block provided on the first roller body 3011 , and the second engaging member is a first engaging groove provided on the second roller body 3012 . The first engaging block corresponds to the first engaging groove in shape and position.
[0027] The second roll 401 includes a third roll body 4011 and a fourth roll body 4012, which are detachably connected. When the third roll body 4011 and the fourth roll body 4012 are connected, the outer surfaces of the third roll body 4011 and the fourth roll body 4012 together constitute the roll surface of the second roll 401, and the outer surface of the third roll body 4011 constitutes the high temperature area of the second roll 401, and the outer surface of the fourth roll body 4012 constitutes the low temperature area of the second roll 401; a second hot oil cavity is provided inside the third roll body 4011, and a second cold oil cavity is provided inside the fourth roll body 4012. The second hot oil cavity in the third roll body 4011 can be heated by hot oil, and the second cold oil cavity in the fourth roll body 4012 can be cooled by cold oil.
[0028] The third roller body 4011 is provided with a third engaging piece, the fourth roller body 4012 is provided with a fourth engaging piece matching the third engaging piece, the fourth roller body 4012 is also provided with a plurality of second through holes arranged along the length direction, and the third roller body 4011 is provided with a plurality of second screw holes corresponding to the second through holes. When the third roller body 4011 and the fourth roller body 4012 are connected, the positions are first fixed by the engagement of the third engaging piece and the fourth engaging piece, and then the screws are passed through the second through holes and connected to the second screw holes, so that the fourth roller body 4012 is locked on the third roller body 4011, and together they form the second version roller 401. Since the fourth roller body 4012 corresponds to the low temperature area of the second version roller 401, the through holes in the fourth roller body 4012 will not affect the embossing.
[0029] The third engaging member is a second engaging block provided on the third roller body 4011 , and the fourth engaging member is a second engaging groove provided on the fourth roller body 4012 . The second engaging block corresponds to the second engaging groove in shape and position.
Claims
1. A seamless transfer device, comprising a frame, an unwinding device, a first molding device, a second molding device and a winding device, wherein the unwinding device, the first molding device, the second molding device and the winding device are respectively mounted on the frame and arranged in sequence along the conveying direction, the first molding device is provided with a first plate roller, the second molding device is provided with a second plate roller, the roller surfaces of the first plate roller and the second plate roller respectively have a high temperature area and a low temperature area, and the device is characterized in that: The high temperature area of the first roller surface occupies three quarters of the first roller, and the low temperature area of the first roller surface occupies one quarter of the first roller; the high temperature area of the second roller surface occupies one quarter of the second roller, and the low temperature area of the second roller surface occupies three quarters of the second roller; the high temperature area of the first roller corresponds to the low temperature area of the second roller, and the low temperature area of the first roller corresponds to the high temperature area of the second roller.
2. A seamless transfer device as claimed in claim 1, characterized in that: The first roller comprises a first roller body and a second roller body, and the first roller body and the second roller body are detachably connected. When the first roller body and the second roller body are connected, the outer surfaces of the first roller body and the second roller body together constitute the roller surface of the first roller, and the outer surface of the first roller body constitutes the high temperature area of the first roller, and the outer surface of the second roller body constitutes the low temperature area of the first roller; a first hot oil cavity is provided inside the first roller body, and a first cold oil cavity is provided inside the second roller body.
3. A seamless transfer device as claimed in claim 2, characterized in that: The first roller body is provided with a first engaging piece, the second roller body is provided with a second engaging piece matching the first engaging piece, the second roller body is also provided with a plurality of first through holes arranged along the length direction, and the first roller body is provided with a plurality of first screw holes corresponding to the first through holes.
4. A seamless transfer device as claimed in claim 3, characterized in that: The first engaging member is a first engaging block provided on the first roller body, and the second engaging member is a first engaging groove provided on the second roller body. The first engaging block corresponds to the first engaging groove in shape and position.
5. The seamless transfer device according to claim 1, characterized in that: The second version roller includes a third roller body and a fourth roller body, and the third roller body and the fourth roller body are detachably connected. When the third roller body is connected to the fourth roller body, the outer surfaces of the third roller body and the fourth roller body together constitute the roller surface of the second version roller, and the outer surface of the third roller body constitutes the high temperature area of the second version roller, and the outer surface of the fourth roller body constitutes the low temperature area of the second version roller; a second hot oil chamber is provided inside the third roller body, and a second cold oil chamber is provided inside the fourth roller body.
6. A seamless transfer device as claimed in claim 5, characterized in that: The third roller body is provided with a third engaging piece, the fourth roller body is provided with a fourth engaging piece matching the third engaging piece, the fourth roller body is also provided with a plurality of second through holes arranged along the length direction, and the third roller body is provided with a plurality of second screw holes corresponding to the second through holes.
7. A seamless transfer device as claimed in claim 6, characterized in that: The third engaging member is a second engaging block provided on the third roller body, the fourth engaging member is a second engaging groove provided on the fourth roller body, and the second engaging block corresponds to the second engaging groove in shape and position.