Double-layer composite label printing equipment and printing method

Abstract

The invention discloses double-layer composite label printing equipment and a printing method. Comprising a rack, a roll feeding mechanism, a slitting mechanism arranged on the rack and used for slitting raw paper into inner paper and outer paper, a stripping mechanism arranged on the rack and used for stripping bottom paper of the inner paper formed by slitting the raw paper, and an overturning frame arranged on the rack and used for overturning the inner paper with the bottom paper stripped. The paper guide roller assembly is arranged on the machine frame and used for guiding the overturned inner paper, and the composite roller assembly is arranged on the machine frame and used for compositing the outer paper formed through slitting and the inner paper guided by the paper guide roller assembly to form a composite film. The plurality of tensioning rollers are used for tensioning the composite film; and the cold ironing and rolling assembly is used for carrying out cold ironing and rolling on the composite film. The automatic label printing machine has the advantages that the unwinding and winding processes performed when an upper label and a lower label are printed on two different printing materials respectively are omitted, the production efficiency is improved, meanwhile, the number of devices is reduced, the occupied space of the devices is reduced, and the production cost is saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of self-adhesive printing, in particular to a double-layer composite label printing device and a printing method. BACKGROUND

[0002] The double-layer composite label refers to a label formed by combining two pre-printed labels through a composite process, and finally attached to the surface of the attached object in an integral form. According to the actual application requirements, the double-layer label can adopt various combination methods, mainly including: large label covering small label, and small label superimposed on large label. The existing process needs to print the upper label and the lower label on two different materials respectively, and then roll up the two materials after printing. Then, the two rolled materials are placed in the composite device for unwinding and compounding. This way leads to complicated printing process steps, low efficiency, the need to occupy multiple sets of equipment, and high production cost.

[0003] For example, the Chinese patent with publication number CN106427258B discloses a double-layer label industrialized printing process. The second layer of printing material is unwound by the unwinding mechanism of the printing machine, and then the pattern or text is printed on the surface of the second layer of printing material according to the design requirements. After printing, drying, and printing a layer of removable varnish on the surface to protect the pattern or text, drying is performed for standby. The adhesive layer of the unwound first layer of printing material is compounded with the surface layer of the second layer of printing material to obtain a double-layer label material, and then dried. According to the design requirements, the pattern or text is printed on the first layer of printing material, and then the removable varnish is printed. After die cutting, a double-layer printed label is obtained. The above-mentioned double-layer label industrialized printing process uses the unwinding mechanism to unwind the first layer of printing material and the second layer of printing material respectively, and then prints them respectively. Then, the first layer of printing material and the second layer of printing material after printing are compounded. This way leads to long time consumption and low efficiency of the first layer and the second layer printing and compounding.

[0004] Therefore, it is necessary to provide a double-layer composite label printing device and a printing method. SUMMARY

[0005] The double-layer composite label printing device and the printing method provided by the present application effectively solve the problems of long printing time and low efficiency of the double-layer label.

[0006] The technical scheme adopted by the present application is:

[0007] The application discloses a double-layer composite label printing device which comprises a rack, a feeding mechanism arranged on the rack and used for providing raw paper, a cutting mechanism arranged on the rack and used for cutting the raw paper into inner paper and outer paper, a stripping mechanism arranged on the rack and used for stripping the base paper of the inner paper cut from the raw paper, a turnover frame arranged on the rack and used for turning over the inner paper after the base paper is stripped, a paper guide roller assembly arranged on the rack and used for guiding the turned-over inner paper, a composite roller assembly arranged on the rack and used for compositing the outer paper cut from the raw paper and the inner paper guided by the paper guide roller assembly into a composite film, a plurality of tensioning rollers for tensioning the composite film and a cold-pressing and winding assembly for cold-pressing and winding the composite film.

[0008] Further, the feeding mechanism comprises a first shaft and a second shaft arranged on the rack along the Y-axis direction, the roller surface of the first shaft is used for contacting the upper end surface of the raw paper path, and the roller surface of the second shaft is used for contacting the lower end surface of the raw paper path.

[0009] Further, the cutting mechanism is used for cutting the raw paper sent out by the feeding mechanism along the length direction of the raw paper, so that the raw paper is cut into the inner paper and the outer paper with a smaller width after passing through the cutting mechanism.

[0010] Further, the turnover frame comprises a third roller and a mounting frame arranged on the rack, the two ends of the third roller are rotationally connected with the mounting frame, the height of the third roller is above the cutting mechanism, the axis of the third roller is parallel to the YZ plane, and the third roller is inclined by 45 degrees relative to the Y-axis.

[0011] Further, the inner paper is projected on the outer paper when the inner paper is separated from the third roller after being turned over from the third roller.

[0012] Further, the paper guide roller assembly is located obliquely above the turnover frame, the paper guide roller assembly comprises a mounting frame arranged on the rack, a worm and gear arranged on the mounting frame, a hand wheel arranged on the mounting frame and used for driving the worm and gear to rotate, and a fourth roller which is driven to realize lifting adjustment by the worm and gear.

[0013] Further, the hand wheel is rotated to drive the fourth roller to lift and descend, and the tensioning degree of the fourth roller on the inner paper is changed.

[0014] Further, the composite roller assembly comprises a driving roller and a driven roller which are arranged in parallel along the X direction, and a motor arranged on the rack and used for driving the driving roller to rotate.

[0015] Further, the inner paper is in rolling connection with the roller surface of the driving roller, the outer paper is in rolling connection with the roller surface of the driven roller, and the inner paper and the outer paper are compositely pressed by the driving roller and the driven roller.

[0016] A printing method of a double-layer composite label, using the double-layer composite label printing device, the printed raw paper is sent by a sending mechanism, and then the raw paper is cut into inner paper and outer paper along the length direction by a slitting mechanism. The outer paper is directly sent into a composite roller assembly, the inner paper is peeled off by a peeling mechanism to separate the base paper of the inner paper, the face material of the inner paper is turned over by a turnover frame to change the position of the inner paper from the inner side of the outer paper to the position that can be projected on the outer paper, and then the face material of the inner paper is guided into the composite roller assembly by a paper guide roller assembly to form a composite film, and then the composite film is sent to a cold pressing and winding assembly under the cooperation of a tensioning roller to be cold pressed and wound.

[0017] The beneficial effects of the application are:

[0018] 1. By printing upper and lower labels on a layer of printed material (raw paper), the printed material is directly transported by a sending mechanism after printing without winding, and is cut by a slitting mechanism along the upper and lower label separation line to form inner paper and outer paper along the length direction, and then the roller sending path of the inner paper is changed by a turnover frame to change the position of the inner paper from the inner side of the outer paper to the upper and lower position corresponding to the outer paper, and then the inner paper is directly combined. This way saves the unwinding and winding process when printing upper and lower labels on two different printed materials, improves production efficiency, reduces the number of equipment, reduces the space occupied by the equipment, and saves production cost.

[0019] 2. By setting the paper guide roller assembly and the turnover frame, the accurate alignment of the inner paper and the outer paper is realized, and the quality stability of the composite film is ensured. The efficient operation of the cold pressing and winding assembly further improves the production speed, reduces the energy consumption, and optimizes the overall production process.

[0020] 3. By setting the height-adjustable paper guide roller assembly, the height of the fourth roller can be adaptively adjusted by the cooperation of the hand wheel and the worm gear, and the tension of the inner paper can be adjusted.

[0021] 4. The slitting mechanism is arranged downstream of the sending mechanism, which can shorten the path of the inner paper and the outer paper after being cut to the composite roller assembly, thereby facilitating the control of the position of the inner paper and the outer paper. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The overall schematic view of the double-layer composite label printing device provided by the embodiment of the application is shown after removing the frame and the hand wheel and the worm gear.

[0023] Figure 2 The schematic view of the turnover frame of the double-layer composite label printing device provided by the embodiment of the application cooperating with the sending mechanism to transport the raw paper, the inner paper and the outer paper.

[0024] Figure 3 This is a schematic diagram of the frame, turning frame and paper guide roller assembly of the double-layer composite label printing equipment provided in an embodiment of the present application.

[0025] The markings in the figure are: 1. Roll feeding mechanism; 2. Slitting mechanism; 3. Peeling mechanism; 4. Turning frame; 5. Paper guide roller assembly; 6. Composite roller assembly; 7. Tensioning roller; 8. Cold ironing and rewinding assembly; 11. Shaft No. 1; 12. Shaft No. 2; 51. Hand wheel; 52. Worm gear; 53. Roller No. 4; 61. Driven roller; 62. Active roller; 9. Frame; 100. Base paper; 200. Inner paper; 300. Outer paper; 100. Composite film. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0027] like Figure 1 and Figure 2 As shown, the first embodiment provided by the present application is a double-layer composite label printing device, including a frame 9, a roll feeding mechanism 1 arranged on the frame 9 for providing base paper 100, a slitting mechanism 2 arranged on the frame 9 for slitting the base paper 100 into inner paper 200 and outer paper 300, a peeling mechanism 3 arranged on the frame 9 for peeling off the bottom paper of the inner paper 200 formed by slitting the base paper 100, a turning frame 4 arranged on the frame 9 for flipping the inner paper 200 after peeling off the bottom paper, a paper guide roller assembly 5 arranged on the frame 9 for guiding the flipped inner paper 200, a composite roller assembly 6 arranged on the frame 9 for composite the outer paper 300 formed by slitting and the inner paper 200 guided by the paper guide roller assembly to form a composite film 400, a plurality of tensioning rollers 7 for tensioning the composite film 400, and a cold foil winding assembly 8 for cold foiling and winding the composite film 400.

[0028] It should be noted that the base paper 100 is formed by overlapping a surface material and a base paper. An upper label and a lower label are printed on the base paper 100.

[0029] In actual use, the printed base paper 100 is rolled by the roll feed mechanism 1. The base paper 100 is then split lengthwise by the slitting mechanism 2 into an inner paper 200 and an outer paper 300. The label on the inner paper 200 is the upper label, and the label on the outer paper 300 is the lower label. The outer paper 300 is then fed directly into the laminating roller assembly 6. The inner paper 200 is peeled off by the peeling mechanism 3, separating the inner paper 200 from the backing paper. The inner paper 200 is then flipped by the flipping frame 4, shifting the inner paper 200 from being positioned to the side of the outer paper 300 to being projected onto the outer paper 300. The inner paper 200 is then guided by the paper guide roller assembly 5 into the laminating roller assembly 6, where it is combined with the inner paper 200 to form a composite film 400, with both the upper and lower labels on the composite film 400. The composite film 400 is then fed to the cold foil rewinding assembly 8 for cold foiling and rewinding, in coordination with the tensioning roller 7.

[0030] In the above design, the equipment of the present application does not need to print the two layers of film that need to be compounded separately and then roll them up separately for compounding. Instead, the upper label and the lower label can be directly printed on a piece of material (base paper) along the width direction of the material, and then the material is cut into inner paper 200 and outer paper 300 without rewinding the material. The conveying path of the inner paper 200 is then adjusted by the turning frame 4 so that the inner paper 200 can overlap with the outer paper 300, and then the inner paper 200 and the outer paper 300 are compounded by the compounding roller assembly 6. The whole process eliminates the need for the original process to print the inner paper 200 and the outer paper 300 separately, roll them up separately, and then unwind them separately, thereby improving production efficiency, saving equipment volume, and reducing production costs.

[0031] Specifically: Figure 1 As shown, the roll feeding mechanism 1 includes a number of No. 1 shafts 11 and No. 2 shafts 12 arranged on the frame 9 along the Y-axis direction. The roller surface of the No. 1 shaft 11 is used to contact the upper end surface of the base paper 100, and the roller surface of the No. 2 shaft 12 is used to contact the lower end surface of the base paper 100.

[0032] In actual use, the front side (upper end face) and the back side (lower end face) of the base paper 100 are alternately rolled by the first shaft 11 and the second shaft 12 to ensure that the base paper 100 is tensioned during the conveying process.

[0033] In the above design, the structural design and specific implementation of the roll feeding mechanism 1 can effectively achieve the tensioning of the base paper 100 .

[0034] Specifically: Figure 1 As shown, the slitting mechanism 2 is used to cut the base paper 100 delivered by the roll feeding mechanism 1 along the length direction of the base paper 100, so that the base paper 100 is cut by the slitting mechanism 2 to form inner paper 200 and outer paper 300 with a width smaller than that of the base paper 100.

[0035] The slitting mechanism 2 is a conventional structure. It is fixed to the frame 9 so that its blades are oriented in the X-direction. When the base paper 100 contacts the blades of the slitting mechanism 2 during transport, the base paper 100 is cut by the slitting mechanism 2 into inner paper 200 and outer paper 300. The inner paper 200 and outer paper 300 are printed with upper and lower labels, respectively.

[0036] In the above design, the slitting mechanism 2 can quickly slit the base paper 100, thereby cutting the base paper 100 printed with the upper label and the lower label into the inner paper 200 printed with the upper label and the outer paper 300 printed with the lower label.

[0037] Specifically: the turning frame 4 includes a No. 3 roller and a mounting frame arranged on the frame 9, the two ends of the No. 3 roller are rotatably connected to the mounting frame, the No. 3 roller is located above the slitting mechanism 2, the axis of the No. 3 roller is parallel to the YZ plane, and the No. 3 roller is inclined at 45° relative to the Y axis.

[0038] In this design, roller 3 is able to rotate while the inner paper 200 is in rolling contact with it. Following the initial path after slitting, the inner paper 200 begins contacting the roller surface at the lower end of roller 3. After wrapping around roller 3, the paper is delivered from roller 3 along the delivery path. The initial path and the delivery path do not overlap; instead, the delivery path corresponds vertically to the path of outer paper 300.

[0039] In the above design, the structural design and specific implementation method of the turning frame 4 can realize the change of the path of the inner paper 200, so that the inner paper 200 is changed from being located on one side of the outer paper 300 during cutting to the inner paper 200 and the outer paper 300 corresponding to each other up and down, providing the inner paper 200 and the outer paper 300 with alignment of size and orientation for the compounding.

[0040] Specifically, after the inner paper 200 is turned over from the No. 3 roller, the inner paper 200 is projected onto the outer paper 300 when it is separated from the No. 3 roller.

[0041] Specifically: Figure 3 As shown, the paper guide roller assembly 5 is located obliquely above the turning frame 4. The paper guide roller assembly 5 includes a mounting frame mounted on the frame 9, a worm gear 52 mounted on the mounting frame, a handwheel 51 mounted on the mounting frame for driving the worm gear 52, and a fourth roller 53 driven by the worm gear 52 for lifting and lowering. Screw holes are provided at both ends of the fourth roller 53 for threaded connection with the worm gear 52.

[0042] In actual use, the hand wheel 51 is rotated to drive the worm gear 52, so that the fourth roller 53 connected with the worm gear 52 by screw thread is lifted or lowered. If the fourth roller 53 is lifted, the tension of the inner paper 200 in the roller conveying process is increased, and if the fourth roller 53 is lowered, the tension of the inner paper 200 in the roller conveying process is reduced.

[0043] In the above design, the structure design and specific implementation of the paper guide roller assembly 5 can effectively adjust the tension of the inner paper 200.

[0044] Specifically, as shown in the figure, rotating the hand wheel 51 drives the worm gear 52 to drive the fourth roller 53 to lift or lower, thereby changing the tension of the inner paper 200 on the fourth roller 53. Figure 3

[0045] Specifically, the composite roller assembly 6 includes a driving roller 62 and a driven roller 61 arranged in parallel along the X direction, and a motor arranged on the rack 9 for driving the driving roller 62 to rotate.

[0046] In actual use, the glue surface of the inner paper 200 and the outer paper 300 are overlapped and then pass through the roller pressure of the driving roller 62 and the driven roller 61, so that the inner paper 200 and the outer paper 300 are roll conveyed and compounded.

[0047] In the above design, the structure design and specific implementation of the composite roller assembly 6 can effectively compound the inner paper 200 and the outer paper 300.

[0048] Specifically, the inner paper 200 is rollingly connected with the roller surface of the driving roller 62, the outer paper 300 is rollingly connected with the roller surface of the driven roller 61, and the inner paper 200 and the outer paper 300 are roll compounded by the driving roller 62 and the driven roller 61.

[0049] The second embodiment provided in the application is that the original paper 100 on which the upper label and the lower label are printed is roll conveyed by the roll conveying mechanism 1, then the original paper 100 is cut into the inner paper 200 with the upper label and the outer paper 300 with the lower label along the length direction by the slitting mechanism 2, the outer paper 300 is directly sent into the composite roller assembly 6, the bottom paper of the inner paper 200 is separated after the inner paper 200 passes through the peeling mechanism 3, the face material of the inner paper 200 is turned over along the turnover frame 4, so that the inner paper 200 is changed from being located at one side of the outer paper 300 to being located at a position corresponding to the outer paper 300, then the face material of the inner paper 200 is guided to enter the composite roller assembly 6 to compound with the outer paper 300 to form a composite film 400, and then the composite film 400 is sent to the cold ironing and winding assembly 8 to be cold ironed and wound under the cooperation of the tensioning roller 7.

[0050] ​In the above design, in the double-layer label composite process, the upper label and the lower label do not need to be printed separately on the two layers of printed materials, but only need to be printed and formed on the original paper 100, and then the original paper 100 is cut to form the inner paper 200 with the upper label and the outer paper 300 with the lower label, the path of the inner paper 200 is changed by using the turnover frame 4 so that the inner paper 200 and the outer paper 300 can be overlapped, and then the inner paper 200 and the outer paper 300 are compounded by using the composite roller assembly 6. The whole process is simple and efficient, which improves the production efficiency and reduces the production cost.

[0051] It should be understood that the above description is only a specific embodiment of the present application and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A double-layer composite label printing device, characterized by: The invention comprises a frame (9), a roll feeding mechanism (1) arranged on the frame (9) for providing base paper (100), a slitting mechanism (2) arranged on the frame (9) for slitting the base paper (100) into inner paper (200) and outer paper (300), a peeling mechanism (3) arranged on the frame (9) for peeling off the bottom paper of the inner paper (200) formed by slitting the base paper (100), and a flipping mechanism (4) arranged on the frame (9) for flipping the inner paper (200) after the bottom paper is peeled off. A rotating frame (4), a paper guide roller assembly (5) arranged on a machine frame (9) for guiding the inner paper (200) after turning over, a composite roller assembly (6) arranged on the machine frame (9) for composite the outer paper (300) formed by slitting and the inner paper (200) guided by the paper guide roller assembly (5) to form a composite film (400), a plurality of tension rollers (7) for tensioning the composite film (400), and a cold-ironing and rewinding assembly (8) for cold-ironing and rewinding the composite film (400).

2. The double-layer composite label printing device according to claim 1, characterized in that: The roll feeding mechanism (1) comprises a plurality of first shafts (11) and second shafts (12) arranged on a frame (9) along the Y-axis direction, wherein the roller surface of the first shaft (11) is used to contact the upper end surface of the base paper (100) path, and the roller surface of the second shaft (12) is used to contact the lower end surface of the base paper (100) path.

3. The double-layer composite label printing device according to claim 1, characterized in that: The slitting mechanism (2) is used to cut the base paper (100) delivered by the roll-feeding mechanism (1) along the length direction of the base paper (100), so that the base paper (100) is cut by the slitting mechanism (2) to form inner paper (200) and outer paper (300) having a width smaller than that of the base paper (100).

4. The double-layer composite label printing device according to claim 1, characterized in that: The turning frame (4) includes a No. 3 roller and a mounting frame arranged on a frame (9), the two ends of the No. 3 roller are rotatably connected to the mounting frame, the No. 3 roller is located above the slitting mechanism (2), the axis of the No. 3 roller is parallel to the YZ plane, and the No. 3 roller is inclined at 45 degrees relative to the Y axis.

5. The double-layer composite label printing device according to claim 4, characterized in that: After the inner paper (200) is turned over from the No. 3 roller, the inner paper (200) is projected onto the outer paper (300) when it is separated from the No. 3 roller.

6. The double-layer composite label printing device according to claim 1, characterized in that: The paper guide roller assembly (5) is located obliquely above the turning frame (4), and comprises a mounting frame arranged on the frame (9), a worm gear (52) arranged on the mounting frame, a hand wheel (51) arranged on the mounting frame for driving the worm gear (52) to rotate, and a fourth roller (53) driven by the worm gear (52) to achieve lifting and lowering adjustment.

7. The double-layer composite label printing device according to claim 6, characterized in that: The hand wheel (51) is rotated to cause the worm gear (52) to drive the fourth roller (53) to move up and down, thereby changing the tension of the fourth roller (53) on the inner paper (200).

8. The double-layer composite label printing device according to claim 1, characterized in that: The composite roller assembly (6) comprises a driving roller (62) and a driven roller (61) arranged in parallel along the X direction, and a motor arranged on a frame (9) for driving the driving roller (62) to rotate.

9. The double-layer composite label printing device according to claim 8, characterized in that: The inner paper (200) is rollingly connected to the roller surface of the active roller (62), and the outer paper (300) is rollingly connected to the roller surface of the driven roller (61). The inner paper (200) and the outer paper (300) are rolled and laminated by the active roller (62) and the driven roller (61).

10. A method for printing a double-layer composite label, using the double-layer composite label printing device according to any one of claims 1 to 9, characterized in that: The base paper (100) printed with the upper label and the lower label is rolled by a roll-feeding mechanism (1), and then the base paper (100) is cut into an inner paper (200) with an upper label and an outer paper (300) with a lower label along a length direction by a slitting mechanism (2). The outer paper (300) is directly fed into a composite roller assembly (6). The inner paper (200) is peeled off by a peeling mechanism (3) so that the bottom paper of the inner paper (200) is separated. The inner paper (200) After the surface material is turned over along the turning frame (4), the inner paper (200) is changed from being located on one side of the outer paper (300) to being located at a position corresponding to the end surface of the outer paper (300). Subsequently, the surface material of the inner paper (200) is guided by the paper guide roller assembly (5) and sent to the composite roller assembly (6) to be composited with the outer paper (300) to form a composite film (400). Then, with the cooperation of the tensioning roller (7), the composite film (400) is sent to the cold foil rewinding assembly (8) for cold foil rewinding.

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