A laminating device for offset printing of flexographic printing machine

Abstract

The utility model relates to the technical field of printing machines, and in particular to a laminating device for rubber surface printing of a flexographic printing machine, comprising a base, the upper surface of the base is fixedly connected with two symmetrical mounting plates, the inner walls of the two mounting plates are provided with bearings, the inner walls of the two bearings are rotatably connected with a laminating bottom roller, the upper surface of the base is provided with a reduction motor for driving the laminating bottom roller, the inner walls of the two mounting plates are provided with slide grooves, the inner walls of the two slide grooves are slidably connected with slide plates, and the inner walls of the two slide plates are rotatably connected with a laminating rubber roller. The utility model adjusts the tension of the surface paper and the bottom paper of the laminating device by adjusting the speed of the reduction motor, thereby eliminating the deformation caused by drying after the rubber surface of the material is printed, which affects the lamination of the material, and there is no need to select other materials that are not easily deformed for rubber surface printing.

Description

Technical Field

[0001] The utility model belongs to the technical field of printing machines, and in particular relates to a laminating device for rubber surface printing of a flexographic printing machine. Background Art

[0002] As people's requirements for quality of life increase, the craftsmanship of various label products is also gradually improving. Offset printing, front and back printing, etc. are increasingly used in various products in life. Flexographic printing uses a flexible printing plate and transfers ink through an anilox roller. It is a kind of letterpress printing process, referred to as flexographic printing, which transfers the ink layer of the image and text part to the surface of the substrate to form clear images and texts.

[0003] At present, due to the different characteristics of substrate materials, some materials are not easy to deform and stretch due to heat, and some materials (such as PE, synthetic paper, pearlescent film, etc.) are very easy to deform or stretch when heated. When the material is stretched after passing through the drying box, the tension of the face paper and the base paper is different. The surface paper tension is getting smaller and smaller, that is, the surface paper material is getting looser, and the base paper tension remains unchanged, so the face paper and the base paper will definitely not be well laminated together, resulting in the inability to achieve adhesive surface printing. Customers have to choose other materials that are not easy to deform for adhesive surface printing, which increases the customer's material cost and affects the universality of this process.

[0004] To this end, the utility model proposes a laminating device for offset printing of a flexographic printing machine to solve the above problems. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the prior art, the utility model provides a laminating device for rubber surface printing of a flexographic printing machine, which can effectively solve the problem that when the rubber surface printing function of the flexographic printing machine in the prior art is performed, the lamination after the rubber surface printing is affected by the different properties of the substrate material.

[0006] The utility model provides a laminating device for rubber surface printing of a flexographic printing machine, comprising a base, wherein the upper surface of the base is fixedly connected with two symmetrical mounting plates, the inner walls of the two mounting plates are provided with bearings, the inner walls of the two bearings are rotatably connected with a laminating bottom roller, the upper surface of the base is provided with a reduction motor for driving the laminating bottom roller, the inner walls of the two mounting plates are provided with sliding grooves, the inner walls of the two sliding grooves are slidably connected with slide plates, and the inner walls of the two slide plates are rotatably connected with a laminating rubber roller.

[0007] Furthermore, a transmission gear is fixedly connected to the outer wall of the laminating bottom roller, a first driven gear meshing with the transmission gear is provided on the outer wall of the laminating rubber roller, and a pressure regulating shaft is commonly provided between the inner walls of the two slide plates.

[0008] Furthermore, one end of the laminating bottom roller away from the reduction motor is fixedly connected to a driving gear, the inner walls of the two mounting plates are provided with through holes, the hole walls of the two through holes are slidably connected to moving blocks, the outer walls of the two mounting plates are fixedly connected to electric push rods, the telescopic ends of the two electric push rods are fixedly connected to the two moving blocks, the inner walls of the two moving blocks are connected to a cleaning roller for common rotation, and the end of the cleaning roller away from one of the moving blocks is provided with a second driven gear meshing with the driving gear.

[0009] Furthermore, the diameter of the laminating bottom roller is greater than the diameter of the laminating rubber roller, and the pitch circles of the laminating bottom roller gear and the laminating rubber roller gear are consistent.

[0010] Furthermore, a collecting frame is provided on the upper surface of the base, and scrapers are slidably connected to the inner walls on both sides of the collecting frame, and a plurality of evenly distributed soft brush layers are provided on the outer wall of the cleaning roller.

[0011] Furthermore, a control panel is provided on the outer wall of one of the mounting plates, and the reduction motor and the electric push rod are both electrically connected to the control panel.

[0012] Compared with the known prior art, the technical solution provided by the utility model has the following advantages:

[0013] Beneficial effects:

[0014] 1. Through the cooperation of the laminating bottom roller, reduction motor, slide plate, transmission gear, laminating bottom roller and the first driven gear, the power of the reduction motor comes from the driving gear on the laminating rubber roller to drive the driven gear at the power end of the reduction motor, and the laminating bottom roller is driven by the reduction motor. The tension of the surface paper and the bottom paper of the laminating device is adjusted by adjusting the speed of the reduction motor, thereby eliminating the deformation caused by drying of the rubber surface of the material after printing, which affects the lamination of the material, and there is no need to select other materials that are not easily deformed for rubber surface printing.

[0015] 2. Through the cooperation of the driving gear, moving block, electric push rod, cleaning roller and the second driven gear, when the material is printed, the electric push rod drives the moving block and the second driven gear to move to the driving gear until the driving gear and the driven gear are in meshing state, which can effectively clean the dust and other impurities on the surface of the laminating bottom roller and the laminating rubber roller to prevent the subsequent materials from being unable to effectively adhere to the surface of the printed matter and affect the quality of lamination. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0018] Figure 2 The three-dimensional structure of the utility model is shown in FIG. Figure 2 ;

[0019] Figure 3 The three-dimensional structure of the utility model is shown in FIG. Figure 3 .

[0020] Figure numerals: 1. base; 2. mounting plate; 3. laminating bottom roller; 4. reduction motor; 5. slide plate; 6. laminating rubber roller; 7. transmission gear; 8. first driven gear; 9. pressure regulating shaft; 10. driving gear; 11. moving block; 12. electric push rod; 13. cleaning roller; 14. second driven gear; 15. collecting frame; 16. scraper; 17. control panel. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The utility model is further described below in conjunction with embodiments.

[0023] Example: Refer to Figures 1 to 3A laminating device for rubber surface printing of a flexographic printing machine comprises a base 1, the upper surface of the base 1 is fixedly connected with two symmetrical mounting plates 2, the inner walls of the two mounting plates 2 are provided with bearings, the inner walls of the two bearings are connected with a laminating bottom roller 3 for rotation, the upper surface of the base 1 is provided with a reduction motor 4 for driving the laminating bottom roller 3, the inner walls of the two mounting plates 2 are provided with slide grooves, the inner walls of the two slide grooves are connected with slide plates 5 for sliding, the inner walls of the two slide plates 5 are connected with a laminating rubber roller 6 for rotation, the diameter of the laminating bottom roller 3 is larger than the diameter of the laminating rubber roller 6, the pitch circle of the gear of the laminating bottom roller 3 is consistent with that of the gear of the laminating rubber roller 6 The outer wall of the laminating bottom roller 3 is fixedly connected with a transmission gear 7, the outer wall of the laminating rubber roller 6 is provided with a first driven gear 8 meshing with the transmission gear 7, and a pressure regulating shaft 9 is commonly provided between the inner walls of the two slide plates 5. The power of the reduction motor 4 comes from the driving gear 10 on the laminating rubber roller 6 to drive the driven gear at the power end of the reduction motor 4, and the laminating bottom roller is driven by the reduction motor 4. The tension of the surface paper and the bottom paper of the laminating device is adjusted by adjusting the tension of the reduction motor 4, thereby eliminating the deformation caused by drying of the rubber surface of the material after printing, which affects the lamination of the material, and there is no need to select other materials that are not easily deformed for rubber surface printing;

[0024] The end of the laminating bottom roller 3 away from the reduction motor 4 is fixedly connected to a driving gear 10, the inner walls of the two mounting plates 2 are provided with through holes, the hole walls of the two through holes are slidably connected to moving blocks 11, the outer walls of the two mounting plates 2 are fixedly connected to electric push rods 12, the telescopic ends of the two electric push rods 12 are fixedly connected to the two moving blocks 11, the inner walls of the two moving blocks 11 are connected to a cleaning roller 13 for common rotation, and the end of the cleaning roller 13 away from one of the moving blocks 11 is provided with a second driven gear 14 meshing with the driving gear 10, and the upper surface of the base 1 is provided with a collecting frame 15, and the inner walls of the two sides of the collecting frame 15 slide A scraper 16 is connected, and the outer wall of the cleaning roller 13 is provided with a plurality of evenly distributed soft brush layers. A control panel 17 is provided on the outer wall of one of the mounting plates 2. The reduction motor 4 and the electric push rod 12 are electrically connected to the control panel 17. After the material is printed, the electric push rod 12 drives the moving block 11 and the second driven gear 14 to move to the driving gear 10 until the driving gear 10 and the driven gear are in a meshing state. This can effectively clean the dust and other impurities on the surface of the laminating bottom roller 3 and the laminating rubber roller 6 to prevent the subsequent materials from being unable to effectively adhere to the surface of the printed matter and affecting the quality of the lamination.

[0025] The operating principle of the utility model is described as follows: first, the pressure regulating shaft 9 is adjusted according to the surface paper tension of the selected printing material, and the slider uses the pressure regulating shaft 9 to make the laminating rubber roller 6 and the laminating bottom roller 3 realize compression and disengagement according to the actual situation, until the appropriate distance, and the reduction motor 4 is started, and the output end of the reduction motor 4 drives the laminating bottom roller 3 to rotate, and at the same time, the transmission gear 7 on the laminating bottom roller 3 is meshed with the first driven gear 8 on the laminating rubber roller 6 and is in a transmission state, so that the laminating rubber roller 6 and the laminating bottom roller 3 rotate synchronously, and then the material is placed on the surface of the laminating bottom roller 3. The speed of the laminating bottom roller 3 can be adjusted by adjusting the speed of the reduction motor, thereby adjusting the size of the surface paper tension. If the material adhesive surface is not deformed after printing and drying, the tension of the surface paper and the bottom paper is the same, and the reduction motor 4 is turned off. The material can be effectively laminated by relying on the pulling force of the paper, thereby eliminating the deformation caused by the drying of the adhesive surface of the material after printing, which affects the lamination of the material, and there is no need to select other materials that are not easy to deform for adhesive surface printing;

[0026] After printing is completed, the two electric push rods 12 are started, and the telescopic ends of the two electric push rods 12 drive the moving block 11 to approach the position of the laminating bottom roller 3 until the second driven gear 14 on the cleaning roller 13 and the driving gear 10 on the laminating bottom roller 3 are engaged with each other and stop, and then the reduction motor is started, and the output end of the reduction motor drives the laminating bottom roller 3 and the cleaning roller 13 to rotate synchronously, so that the cleaning roller 13 cleans the surface dust and other impurities of the laminating bottom roller 3 and the laminating rubber roller 6 to prevent the subsequent materials from being unable to effectively adhere to the surface of the printed matter and affecting the quality of lamination.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A laminating device for offset printing of a flexographic printing press, characterized in that: The invention comprises a base (1), wherein the upper surface of the base (1) is fixedly connected to two symmetrical mounting plates (2), the inner walls of the two mounting plates (2) are provided with bearings, the inner walls of the two bearings are rotatably connected to a laminating bottom roller (3), the upper surface of the base (1) is provided with a reduction motor (4) for driving the laminating bottom roller (3), the inner walls of the two mounting plates (2) are provided with sliding grooves, the inner walls of the two sliding grooves are slidably connected to slide plates (5), and the inner walls of the two slide plates (5) are rotatably connected to a laminating rubber roller (6).

2. A laminating device for offset printing of a flexographic printing press according to claim 1, characterized in that: The outer wall of the laminating bottom roller (3) is fixedly connected to a transmission gear (7), the outer wall of the laminating rubber roller (6) is provided with a first driven gear (8) meshing with the transmission gear (7), and a pressure regulating shaft (9) is commonly provided between the inner walls of the two slide plates (5).

3. The laminating device for offset printing of a flexographic printing press according to claim 1, characterized in that: The end of the laminating bottom roller (3) away from the reduction motor (4) is fixedly connected to a driving gear (10), the inner walls of the two mounting plates (2) are provided with through holes, the hole walls of the two through holes are slidably connected to moving blocks (11), the outer walls of the two mounting plates (2) are fixedly connected to electric push rods (12), the telescopic ends of the two electric push rods (12) are fixedly connected to the two moving blocks (11), the inner walls of the two moving blocks (11) are connected to a cleaning roller (13) for common rotation, and the end of the cleaning roller (13) away from one of the moving blocks (11) is provided with a second driven gear (14) meshing with the driving gear (10).

4. The laminating device for offset printing of a flexographic printing press according to claim 1, characterized in that: The diameter of the laminating bottom roller (3) is greater than the diameter of the laminating rubber roller (6), and the pitch circle of the gear of the laminating bottom roller (3) is consistent with that of the gear of the laminating rubber roller (6).

5. The laminating device for offset printing of a flexographic printing press according to claim 3, characterized in that: The upper surface of the base (1) is provided with a collecting frame (15), the inner walls on both sides of the collecting frame (15) are slidably connected with scrapers (16), and the outer wall of the cleaning roller (13) is provided with a plurality of evenly distributed soft brush layers.

6. The laminating device for offset printing of a flexographic printing press according to claim 3, characterized in that: A control panel (17) is provided on the outer wall of one of the mounting plates (2), and the reduction motor (4) and the electric push rod (12) are both electrically connected to the control panel (17).

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