Film laminating device and printing machine

Abstract

The utility model relates to the field of label printing, in particular to a laminating device and a printer, which comprise an upper plate and a lower plate which are both transversely arranged, the lower plate is positioned below the upper plate, a plurality of elastic pressing strips are fixedly arranged at the bottom of the upper plate, the pressing strips are transversely arranged at the bottom of the upper plate in parallel, and one end of each pressing strip far away from the upper plate is a tip end. The tips are pressed at the top of the lower plate under the action of self elasticity of the pressing strips, and the tips of the multiple pressing strips face the same direction. According to the scheme, the problem that bubbles exist between the film and the label paper at present is solved.

Description

Technical Field

[0001] The utility model relates to the field of label printing, in particular to a laminating device and a printing machine. Background Art

[0002] After the label paper is currently printed, it needs to be laminated on the label paper. Lamination can improve the durability, wear resistance, waterproofness and appearance of the label.

[0003] Currently, the printing machine is equipped with a film release roller and two pressure rollers. The film release roller releases the film, and the released film and the printed label paper pass through the two pressure rollers together. The two pressure rollers squeeze the film and label paper with greater pressure, and the film is firmly attached to the label paper under the action of greater pressure.

[0004] However, since the film and label paper pass through the pressing roller quickly, the film and label paper stay time on the pressing roller is short, and the film and label paper are only squeezed once by the pressing roller. When the film and label paper pass through the pressing roller, the pressing roller is sometimes unable to completely squeeze out the gas between the film and the label paper, resulting in the inevitable appearance of bubbles in certain parts of the current film attachment method, affecting the lamination quality of the film and label paper. If the film lamination quality is unqualified, it will need to be reprinted and relaminated, which seriously affects the label production efficiency and cost. Utility Model Content

[0005] The utility model aims to provide a laminating device and a printing machine to solve the existing problem of air bubbles remaining between the film and the label paper.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical solution: a coating device, comprising an upper plate and a lower plate, both of which are arranged horizontally, the lower plate is located below the upper plate, and a plurality of elastic pressure strips are fixed to the bottom of the upper plate. The plurality of pressure strips are arranged horizontally and in parallel at the bottom of the upper plate, and the end of the pressure strip away from the upper plate is a pointed end, and the pointed end is pressed on the top of the lower plate under the action of the pressure strip's own elastic force, and the tips of the plurality of pressure strips are oriented in the same direction.

[0007] To achieve the above-mentioned purpose, the present invention adopts another technical solution as follows: a printing machine includes a frame, on which a film release roller, a pressure roller unit and a winding roller are sequentially arranged, and also includes a laminating device, which is located between the film release roller and the pressure roller unit.

[0008] The principle and advantages of the present application are as follows: the inventor of the present application has designed a laminating device, which is arranged between a film release roller and a pressure roller unit, so that the film release roller on the frame releases the film, and before the film and the printed label paper enter the pressure roller unit, the film and the label paper first enter the laminating device, and the film and the label paper move between the pressure strip and the lower plate, and the tip of the pressure strip is pressed on the film, and the label paper moves on the lower plate, and the lower plate supports the label paper, and the film slides on the tip of the pressure strip, and the direction of the tip of the pressure strip is opposite to the moving direction of the film, and the tip of the pressure strip drives out the air between the film and the label paper, so that no gas will remain between the film and the label paper, thereby avoiding the generation of bubbles.

[0009] Since the laminating device in the present application has multiple pressing strips, and the multiple pressing strips are arranged horizontally and in parallel at the bottom of the upper plate, the film and label paper pass through the multiple pressing strips in turn during the movement of the film and label paper on the laminating device, and the multiple pressing strips squeeze the film in turn, thereby increasing the number of times the pressing strips squeeze the film and label paper, ensuring the quality of gas removal between the film and the label paper, and removing the gas between the film and the label paper more thoroughly, greatly avoiding the generation of bubbles.

[0010] At the same time, during the movement of the film and label paper between the pressure strips and the lower plate, the tips of the multiple pressure strips smooth the surface of the film, thereby making the film more flat when attached to the label paper.

[0011] In this application, the tip of the layer is in contact with the film. The tip of the layer is small in size and presses on the film compared to the entire block-shaped plane, thereby reducing the contact friction area between the layer and the film, which is conducive to relatively smooth sliding between the film and the layer.

[0012] After the film and label paper come out of the laminating device, they enter the pressing roller unit. The pressure exerted by the pressing roller unit on the film and label paper is greater than the pressure exerted by the pressure bar on the film and label paper. The pressing roller unit presses the film and label paper firmly together, so that the film is more firmly attached to the label paper.

[0013] Preferably, as an improvement to the laminating device, bolt holes are provided at the front and rear ends of the lower plate.

[0014] Therefore, the bolt holes are provided for fixing the lower plate to the frame by means of bolts.

[0015] Preferably, as an improvement to the laminating device, connecting ears are fixedly connected to the front and rear ends of the upper plate.

[0016] Therefore, the provision of the connecting ears facilitates fixing the upper plate on the frame.

[0017] Preferably, as an improvement to the laminating device, the pressure strip is made of rubber.

[0018] The rubber layer makes the layer itself have a certain elasticity.

[0019] Preferably, as an improvement to the laminating device, the cross-sectional shape of the layering strip is triangular.

[0020] Preferably, as an improvement to the printing press, the printing press further comprises a guide roller, wherein the guide roller is located between the film releasing roller and the laminating device.

[0021] Therefore, the guide roller is provided to guide the film released by the film release roller or the printed label paper, so that the film or label paper can enter between the pressure bar and the lower plate of the laminating device horizontally and smoothly.

[0022] Preferably, as an improvement to a printing press, the pressure roller unit includes an upper pressure roller and a lower pressure roller, the upper pressure roller is located above the lower pressure roller, the lower pressure roller is rotatably connected to the frame, sliding blocks are provided at both ends of the upper pressure roller, the upper pressure roller and the sliding block are rotatably connected, the sliding block is vertically slidably connected to the frame, and an elastic member is connected to the sliding block to apply downward force to the sliding block.

[0023] As a result, the film and label paper pass between the upper pressure roller and the lower pressure roller, and the elastic member gives the sliding block a downward force. The sliding block has a downward force, so that the upper pressure roller is pressed on the lower pressure roller under the elastic force of the elastic member, so that the lower pressure roller and the upper pressure roller press the film and label paper tightly together.

[0024] Preferably, as an improvement to the printing press, a fixed plate is connected to the top of the frame, and an elastic member is located between the sliding block and the fixed plate, and the elastic member is a compression spring. Thus, the fixed plate is fixed to the top of the frame, and the elastic member is located between the sliding block and the fixed plate. The elastic member is in a compressed state, thereby applying downward pressure to the sliding block.

[0025] Preferably, as an improvement to the printing press, a vertical chute is provided on the frame, and the sliding block is clamped in the chute. The chute serves to guide the vertical sliding of the sliding block and also serves to limit the sliding block so that the sliding block will not detach laterally from the frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a three-dimensional diagram of part of the structure of the printing press.

[0027] Figure 2 for Figure 1 Front view of .

[0028] Figure 3 for Figure 2 Schematic diagram of the structure of the film coating device.

[0029] Figure 4 for Figure 1An enlarged schematic diagram of the structures including the fixed plate, elastic member, and sliding block on the intermediate pressure roller unit. DETAILED DESCRIPTION

[0030] The following is further described in detail through specific implementation methods:

[0031] The figure marks in the drawings of the specification include: frame 1, film release roller 2, tensioning roller 3, upper guide roller 4, lower guide roller 5, upper plate 6, lower plate 7, pressure strip 8, first bolt 9, connecting ear 10, second bolt 11, fixing plate 12, elastic member 13, sliding block 14, winding roller 15, film 16, label paper 17, lower pressure roller 18, upper pressure roller 19.

[0032] The embodiment is basically as shown in the attached Figure 1-Figure 4 As shown: a printing machine, including a frame 1, on which a film release roller 2, a pressure roller unit and a winding roller 15 are provided from left to right. The film release roller 2 is rotatably connected to the frame 1 via a bearing, and a film 16 to be used is wound on the film release roller 2. The winding roller 15 is rotatably connected to the frame 1 via a bearing, and the winding roller 15 is used to wind up the label paper after the film is applied. The printing machine should also include a printing unit, which includes a printing roller and other structures. The printing unit is used to print ink on the label paper. However, since the printing unit is not the improvement of this application, the printing unit in this application will not be described in detail. The printing unit can use the existing printing unit to print the label paper 17.

[0033] The printing machine in this embodiment also includes a laminating device, which is located between the film release roller 2 and the pressure roller unit. The specific structure of the laminating device is as follows: the laminating device includes an upper plate 6 and a lower plate 7, both of which are arranged horizontally. The lower plate 7 is located below the upper plate 6. Bolt holes are provided at the front and rear ends of the lower plate 7. The front and rear ends of the lower plate 7 pass through the frame 1 and the bolt holes through the first bolts 9, thereby fixing the lower plate 7 to the frame 1. The front and rear ends of the upper plate 6 are integrally formed with connecting ears 10, which are pressed on the top of the frame 1. The connecting ears 10 are fixed to the top of the frame 1 by the second vertical bolts 11. Combined Figure 3 As shown, the bottom of the upper plate 6 is fixed (fixing methods may be bonding, screw fixing, etc.) with a plurality of elastic pressure strips 8, which are parallel to the front and rear directions of the upper plate 6, and the lengths of the plurality of pressure strips 8 are equal to the front and rear widths of the upper plate 6, and the plurality of pressure strips 8 are arranged horizontally and in parallel at the bottom of the upper plate 6, and the cross-sectional shape of the pressure strip 8 is triangular, and the end of the pressure strip 8 away from the upper plate 6 is a pointed end. The pressure strip 8 in this embodiment is made of rubber material, and the pointed end is pressed on the top of the lower plate 7 under the elastic force of the rubber itself, and the pointed ends of the plurality of pressure strips 8 are oriented in the same direction. In this embodiment, the plurality of pressure strips 8 are all oriented toward the lower left, and the conveying direction of the film 16 and the label paper 17 in this embodiment is from left to right.

[0034] The printing press also includes guide rollers rotatably connected to the frame 1 via bearings. These guide rollers are divided into an upper guide roller 4 and a lower guide roller 5. Both guide rollers are located between the film release roller 2 and the laminating device. The upper guide roller 4 is located above the lower guide roller 5 and is used to guide the film 16 conveyed from the film release roller 2, allowing the film 16 to enter horizontally between the pressure bar 8 and the top of the lower plate 7. The lower guide roller 5 is used to guide the printed label paper 17, allowing the label paper 17 to enter horizontally between the pressure bar 8 and the top of the lower plate 7. In this embodiment, a tensioning roller 3 is provided to the left of the lower guide roller 5. The tensioning roller 3 is used to tension the conveyed printed label paper 17, ensuring that the printed label paper 17 is in a tensioned state when it is conveyed to the lower guide roller 5, preventing the label paper 17 from loosening due to long-distance conveyance. Thus, the printed label paper 17 is conveyed to the tensioning roller 3, tensioned by the tensioning roller 3, and then conveyed to the lower guide roller 5, ultimately entering the laminating device.

[0035] The pressure roller unit in this embodiment includes an upper pressure roller 19 and a lower pressure roller 18. The upper pressure roller 19 is located above the lower pressure roller 18. The lower pressure roller 18 is rotatably connected to the frame 1 via a bearing. A sliding groove is provided at the top of the frame 1. Sliding blocks 14 are provided at both ends of the upper pressure roller 19. The upper pressure roller 19 and the sliding blocks 14 are rotatably connected via bearings. The sliding blocks 14 are vertically slidably connected in the sliding groove of the frame 1. A fixed plate 12 is fixed to the top of the frame 1 by bolts. An elastic member 13 is connected between the fixed plate 12 and the sliding block 14. The elastic member 13 in this embodiment is a compression spring. To ensure that the vertical sliding of the sliding block 14 in the sliding groove is more stable and the sliding block 14 is not easily disengaged laterally from the sliding groove, a vertical sliding groove is provided on the inner wall of the sliding groove of the frame 1. Blocks are integrally formed on the left and right side surfaces of the sliding block 14. The blocks are locked in the sliding groove and can slide vertically in the sliding groove.

[0036] The specific implementation process is as follows: After printing, the label paper 17 is conveyed to the right, passing through the tension roller 3 and the lower guide roller 5 and entering the laminating device horizontally. Simultaneously, the film release roller 2 releases the film 16, which then passes through the upper guide roller 4 and enters the laminating device horizontally. In this embodiment, the upper guide roller 4 and the lower guide roller 5 exert no pressure on the film 16 and the label paper 17. Thus, the film 16 and the label paper 17 enter the laminating device together, with the film 16 positioned above the label paper 17. The film 16 and the label paper 17 move between the pressure bar 8 and the lower plate 7. The tip of the pressure bar 8 presses against the film 16 under its own elastic force. The label paper 17 moves on the lower plate 7, which supports the label paper 17. The film 16 slides relative to the tip of the pressure bar 8. The tip of the pressure bar 8 expels (squeezes) the air between the film 16 and the label paper 17, thus eliminating air retention and preventing the formation of bubbles. During this process, the purpose of the pressure applied by the pressure strip 8 to the film 16 is not to press the film 16 tightly against the label paper 17. Instead, the pressure applied by the pressure strip 8 to the film 16 is small, and the movement of the film 16 expel (squeeze) the air between the film 16 and the label paper 17. Therefore, the pressure applied by the pressure strip 8 to the film 16 is relatively small.

[0037] In the laminating device in this embodiment, since there are multiple pressure strips 8, and the multiple pressure strips 8 are arranged horizontally and in parallel at the bottom of the upper plate 6, the film 16 and the label paper 17 pass through the multiple pressure strips 8 in turn during the movement of the laminating device, and the multiple pressure strips 8 squeeze the film 16 in turn, thereby increasing the number of times the pressure strips 8 squeeze the film 16 and the label paper 17, ensuring the quality of gas removal between the film 16 and the label paper 17, and more thoroughly removing the gas between the film 16 and the label paper 17, thereby greatly avoiding the generation of bubbles.

[0038] At the same time, when the film 16 and the label paper 17 in this application move between the pressure strip 8 and the lower plate 7, the pressure strip 8 and the film 16 produce relative displacement, and the tips of the multiple pressure strips 8 play a role in smoothing the surface of the film 16, so that the film 16 is attached to the label paper 17 more smoothly.

[0039] After the film 16 and the label paper 17 come out of the laminating device, they enter the pressure roller unit. The lower pressure roller 18 has a downward pressing force on the film 16 and the label paper 17 under the elastic force of the elastic member 13 (this force is greater than the downward pressure of the pressure strip 8). The pressure of the pressure roller unit on the film 16 and the label paper 17 is relatively large, so that the film 16 and the label paper 17 are firmly adhered to the label paper 17 under the greater extrusion pressure of the upper pressure roller 19 and the lower pressure roller 18.

[0040] The above description is merely an embodiment of the present invention, and the commonly known specific technical solutions and / or features of the solution are not described in detail here. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several variations and improvements can be made, which should also be considered as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection claimed in this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A laminating device, characterized in that: It includes an upper plate and a lower plate, both of which are arranged horizontally. The lower plate is located below the upper plate. A plurality of elastic pressure strips are fixedly provided at the bottom of the upper plate. The plurality of pressure strips are arranged horizontally and in parallel at the bottom of the upper plate. The end of the pressure strip away from the upper plate is a pointed end. The pointed end is pressed against the top of the lower plate under the elastic force of the pressure strip itself, and the tips of the plurality of pressure strips are oriented in the same direction.

2. A laminating device according to claim 1, characterized in that: Bolt holes are provided at the front and rear ends of the lower plate.

3. The laminating device according to claim 1, characterized in that: The front and rear ends of the upper plate are fixedly connected with connecting ears.

4. The laminating device according to claim 1, characterized in that: The pressure strip is made of rubber.

5. The laminating device according to claim 1, characterized in that: The cross-section of the layering strip is triangular.

6. A printing press comprising a frame on which a film release roller, a pressure roller unit and a winding roller are sequentially arranged, characterized in that: It also includes a laminating device according to any one of claims 1 to 5, wherein the laminating device is located between the film releasing roller and the pressing roller unit.

7. The printing press according to claim 6, characterized in that: The device also includes a guide roller, which is located between the film releasing roller and the laminating device.

8. The printing press according to claim 6, wherein: The pressing roller unit includes an upper pressing roller and a lower pressing roller, the upper pressing roller is located above the lower pressing roller, the lower pressing roller is rotatably connected to the frame, sliding blocks are provided at both ends of the upper pressing roller, the upper pressing roller and the sliding block are rotatably connected, the sliding block is vertically slidably connected to the frame, and an elastic member is connected to the sliding block to apply downward force to the sliding block.

9. The printing press according to claim 8, characterized in that: The top of the frame is connected with a fixed plate, the elastic member is located between the sliding block and the fixed plate, and the elastic member is a compression spring.

10. The printing press according to claim 8, wherein: The frame is provided with a vertical sliding groove, and the sliding block is clamped in the sliding groove.

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