Environment-friendly carton printing machine

Abstract

The utility model discloses a carton environment-friendly printing machine, which relates to the technical field of printing machines, and comprises an equipment body, a conveying belt is arranged in the equipment body, the conveying belt is used for conveying paperboards, a compression roller and a drying device are arranged above the conveying belt, the compression roller is in threaded connection with screw rods with different rotating directions, and the drying device is used for drying the paperboards. The two pressing rollers can move in the same direction or in the opposite directions, so that the paper pressing device is suitable for paperboards with different widths and sizes; air is discharged to paperboards on a conveying belt in multiple directions through a plurality of air outlets in an air outlet pipe of the drying device to accelerate the drying process of printing ink, so that the printing ink on the paperboards is rapidly dried, the paperboards are continuously conveyed in a drying area and are continuously blown to the paperboards at the same time, and after drying is completed, the paperboards are continuously dried. And the paperboards are continuously conveyed to the next working area through the conveying belt for subsequent processing or packaging.

Description

Technical Field

[0001] The utility model relates to the technical field of printing machines, in particular to an environmentally friendly carton printing machine. Background Art

[0002] A carton printing machine is a device specially used for printing cartons (including the surface and sides of the carton), and is usually used for printing packaging boxes, cartons and other products.

[0003] According to the characteristics of certain inks and the amount of ink per cycle on the transfer roller, the problem that the ink on the cardboard after printing is not easy to dry under normal temperature environment is easy to occur. If the undried ink is subjected to pressure during contact or friction, it will be scratched or damaged, resulting in incomplete printed patterns, uneven colors or blurry colors. In the Chinese utility model patent CN219564509U, a carton environmentally friendly printing machine is specifically disclosed, including a support mechanism and an ink air-drying mechanism, by setting two horizontal frames, and movably installing an auxiliary pressure shaft rod at one end of the two adjacent horizontal frames, and movably installing an air duct at the other end of the two adjacent horizontal frames, and installing two guide wheels and rings at both ends of the air duct that can decompress and transfer the side of the cardboard, and at the same time, opening an air hole at the bottom of the air duct that can blow the undried ink on the surface of the cardboard. When the air guide conveys the airflow transferred by the external blower to the inner cavity of the air duct, the flowing airflow can be blown uniformly along the air hole at the bottom of the air duct toward the surface of the cardboard, thereby performing air drying.

[0004] However, according to the specification of the above application, this printing machine uses an auxiliary pressure bar to directionally transport the cardboard on the track, and the auxiliary pressure bar as a whole directly rolls in contact with the printed cardboard and directionally transports it to the area to be air-dried. Therefore, it is very easy for the auxiliary pressure bar to rub off the ink pattern before the ink is air-dried; and the distance between the auxiliary pressure bar and the track in the above application cannot be adjusted. Therefore, in actual use, it is only suitable for cardboard of a certain thickness and is not suitable for printing cardboard of different sizes and models. Utility Model Content

[0005] 1) Technical issues solved

[0006] The utility model provides a carton environmentally friendly printing machine to solve the problem of incomplete patterns caused by scratches on existing undried ink.

[0007] 2) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a carton environmental protection printing machine, comprising an equipment body, a conveyor belt is arranged inside the equipment body, the conveyor belt is used to transport cardboard, a pressure roller and a drying device are arranged above the conveyor belt, a screw is rotatably arranged inside the equipment body, a first threaded portion and a second threaded portion are arranged on the screw, and the first threaded portion and the second threaded portion have opposite thread rotation directions, a pressure roller is respectively arranged on the first threaded portion and the second threaded portion, the two pressure rollers can move towards / against each other at the same time, and each pressure roller can move in a direction perpendicular to the horizontal plane.

[0009] Furthermore, two of the screws are rotatably connected inside the equipment body, and the drying device is located between the two screws.

[0010] Furthermore, a round rod is provided in the body of the device near each of the screw rods, and the central axis of any of the round rods is parallel to the central axis of the screw rod;

[0011] A support frame is threadedly connected to the first threaded portion and the second threaded portion of each screw, and each support frame is slidably connected to the round rod;

[0012] A retractable telescopic rod is arranged on one side of each support frame facing the conveyor belt, and the telescopic movement direction of each telescopic rod is perpendicular to the horizontal plane.

[0013] Furthermore, the bottom of any one of the telescopic rods is rotatably connected to a pressing roller.

[0014] Furthermore, the telescopic rod includes a first connecting rod and a second connecting rod, wherein:

[0015] The pressure roller is rotatably connected to the bottom of the second connecting rod;

[0016] The first connecting rod is fixedly connected to the bottom of the supporting frame, the second connecting rod is sleeved on the first connecting rod, a spring is sleeved on the outer surface of the first connecting rod, and the spring is located between the second connecting rod and the supporting frame.

[0017] Furthermore, when the pressure roller is in rolling contact with the conveyor belt, the spring is in a compressed state, and its pressure is directed toward the pressure roller.

[0018] Furthermore, the drying device includes an air outlet pipe, a plurality of air outlets are evenly arranged on the air outlet pipe, and the air outlet direction of the air outlet is toward the conveyor belt.

[0019] Furthermore, the central axis of the air outlet pipe is parallel to the central axis of the screw.

[0020] 3) Beneficial effects:

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] The utility model guides the cardboard transported on the conveyor belt by limiting the position of the pressure roller during the drying process, and provides appropriate pressure by threading the pressure roller on screws with different rotation directions, so that the two pressure rollers can move towards or away from each other, thereby being suitable for cardboards of different widths and sizes;

[0023] Through the multiple air outlets in the air outlet pipe of the drying device, air is blown to the cardboard on the conveyor belt in multiple directions to accelerate the drying process of the printing ink, so that the printing ink on the cardboard is quickly dried. The cardboard is continuously conveyed in the drying area, and the air is continuously blown to the cardboard. After the drying is completed, the cardboard continues to be conveyed to the next working area through the conveyor belt for subsequent processing or packaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional schematic diagram of an environmentally friendly printing machine device for fixing cartons and air-drying printing ink provided in an embodiment of the present application;

[0025] Figure 2 A schematic diagram of the structure of a pressing roller for fixing a carton in a device provided in an embodiment of the present application;

[0026] Figure 3 A schematic diagram of a conveyor belt transporting cartons, a pressure roller fixing cartons, and a drying device drying ink in a device provided in an embodiment of the present application;

[0027] Figure 4 A schematic diagram of a device provided in an embodiment of the present application in which a pressure roller is installed on a screw rod, and two pressure rollers are moved simultaneously by rotating a handle;

[0028] Figure 5 A schematic diagram of a pressing roller in a device provided in an embodiment of the present application fixing cartons of different thicknesses;

[0029] In the figure: 1. Equipment body; 2. Conveyor belt; 3. Screw; 301. First threaded portion; 302. Second threaded portion; 4. Round rod; 5. Air outlet pipe; 6. Support frame; 7. Pressing roller; 8. First connecting rod; 9. Second connecting rod; 10. Spring; 11. Handle. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0031] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In the process of printing cartons with an environmentally friendly printing press, the inventor of the present application found that:

[0033] Some inks contain high solvent content or slow evaporation speed, which will lead to longer drying time, especially for cartons that need to be printed on a large area. The printed ink is not easy to dry at room temperature. The thickness of the ink layer will also affect the drying time. A thicker ink layer will take longer to dry completely, and the inside will still be damp. Some carton materials have high ink absorption, which causes the ink to stay on the surface of the carton for too long and is difficult to dry quickly. If the undried ink is subjected to pressure during contact or friction, it will be scratched or damaged, resulting in incomplete printing patterns, uneven colors or blurring, and migration to other cartons during stacking or transportation of cartons, causing contamination or blurring of printed products.

[0034] Furthermore, in order to improve the various defects in the above-mentioned prior art, the embodiment of the present application proposes a carton environmentally friendly printing machine, which solves the problem that the ink is not easy to dry during the carton printing process, and can limit and fix the carton during the drying process.

[0035] Combination Figures 1 to 5 The illustrated carton environmental protection printing machine includes a device body 1, which is the main part of the printing machine and includes other components and mechanical structures. A conveyor belt 2 is arranged inside the device body 1. The conveyor belt 2 is used to transport the cardboard that has been printed with patterns in the previous process. The conveyor belt 2 transfers the cardboard from one process to the next process. A pressing roller 7 and a drying device are arranged above the conveyor belt 2. The drying device is used to dry the ink printed on the cardboard. A screw 3 is rotatably arranged inside the device body 1. The screw 3 is provided with a first threaded portion 301 and a second threaded portion 302. The first threaded portion 301 and the second threaded portion 302 have opposite thread directions. A pressing roller 7 is arranged on each of the first threaded portion 301 and the second threaded portion 302. The pressing roller 7 is used for rolling contact with the conveyor belt 2. The function of the pressing roller 7 is to limit and guide the cardboard transported on the conveyor belt 2 during the drying process and provide appropriate pressure. The two pressing rollers 7 can move toward each other / backward at the same time, and each pressing roller 7 can move in a direction perpendicular to the horizontal plane.

[0036] In the above structure, it can be understood that the screw rod 3 is provided with a first threaded portion 301 and a second threaded portion 302, and the thread directions of the first and second threaded portions 301 and 302 are opposite to each other. This design can realize the movement of the two pressing rollers 7 toward or away from each other, so as to be suitable for paperboards of different widths and sizes. Each pressing roller 7 can move in a direction perpendicular to the horizontal plane, so that the contact force and position between the pressing roller 7 and the conveyor belt 2 can be adjusted to adapt to different paperboard sizes and thicknesses.

[0037] The design of the above-mentioned carton environmentally friendly printing machine provided in the implementation of this application is intended to realize the printing and drying process of the cardboard through steps such as conveying, pressure roller 7 and drying device, and to guide and control the transportation of the cardboard through the movement of the screw 3 and the pressure roller 7, thereby improving production efficiency and printing quality.

[0038] In some embodiments provided in the present application, regarding the positions of the screw rod 3 and the drying device, two rotatable screw rods 3 are installed inside the device body 1, and a handle 11 is fixedly connected to one side of each screw rod 3, and the drying device is located between the two screw rods 3. Figure 3 and Figure 4 , Figure 3 It is a schematic diagram of the above printing device in which the conveyor belt 2 transports the carton, the pressure roller 7 fixes the carton, and the drying device dries the ink. Figure 4 It is a schematic diagram of the above-mentioned printing device in which the pressure roller 7 is installed on the screw 3 and the two pressure rollers 7 move simultaneously by rotating the handle 11. The screws 3 located on both sides of the drying device are threadedly installed with pressure rollers 7. The pressure rollers 7 are in rolling contact with the cardboard transported on the conveyor belt 2 to limit and guide the moving position of the cardboard. By rotating the handle 11, the support frames 6 are moved toward / away from each other at the same time, thereby adjusting the distance between the two pressure rollers 7. For example, by rotating the handle 11 clockwise, the support frames 6 threadedly connected to different threaded parts of the screw 3 move away from each other at the same time. The drying device is used to dry the ink on the cardboard during transportation.

[0039] In some embodiments provided in the present application, for the pressure rollers 7 that are threadedly connected with different spiral rotation directions, more specifically, a round rod 4 is arranged near each screw 3 in the equipment body 1, and the central axis of any round rod 4 is parallel to the central axis of the screw 3. The function of these round rods 4 is to provide a basis for support and sliding connection.

[0040] The first threaded portion 301 and the second threaded portion 302 of each screw rod 3 are connected with a support frame 6, which is connected to the screw rod 3 by threads and is slidably connected to the round rod 4. The function of the support frame 6 is to maintain the stability and balance of the pressure roller 7.

[0041] Each support frame 6 is provided with a retractable connecting rod on the side facing the conveyor belt 2. These connecting rods can be retracted and moved as needed, and the retracted and moved direction is perpendicular to the horizontal plane. The purpose of this design is to enable the pressure roller 7 to adapt to cardboards of different sizes and thicknesses. A pressure roller 7 is rotatably connected to the bottom of each telescopic rod. These pressure rollers 7 can adjust their contact force and position with the conveyor belt 2 through the movement of the telescopic rod to adapt to the limiting requirements of different cardboards.

[0042] On the basis of the above, regarding the structure of the telescopic rod connected between the support frame 6 and the pressure roller 7, as shown in FIG. Figure 4 and Figure 5 As shown, in some feasible embodiments, the telescopic rod includes a first connecting rod 8 and a second connecting rod 9, wherein: the first connecting rod 8 is fixedly connected to the bottom of the support frame 6, and the second connecting rod 9 is sleeved on the first connecting rod 8, and the pressure roller 7 is rotatably connected to the bottom of the second connecting rod 9; a spring 10 is sleeved on the outer surface of the first connecting rod 8, and the spring 10 is located between the second connecting rod 9 and the support frame 6, and the function of the spring 10 is to provide pressure to keep the pressure roller 7 in proper contact with the conveyor belt 2. When the pressure roller 7 is in rolling contact with the conveyor belt 2, the spring 10 is in a compressed state, and its pressure is toward the pressure roller 7, so that appropriate pressure can be applied to the cardboard to achieve a good embossing effect.

[0043] Through the above structural design, it can be understood that when the pressure roller 7 contacts the conveyor belt 2, the spring 10 is in a compressed state, providing appropriate pressure, which can ensure good contact between the pressure roller 7 and the cardboard. At the same time, the presence of the spring 10 can also reduce excessive pressure on the cardboard and prevent the printed pattern on the cardboard from being scratched. Such a structure can provide stable pressure control during the printing process and realize the limiting and guiding effect on the cardboard on the conveyor belt 2.

[0044] In some feasible embodiments provided in the embodiments of the present application, for example Figures 1 to 3 As shown, regarding the above-mentioned drying device for drying printing ink on cardboard, the drying device includes an air outlet pipe 5, and the central axis of the air outlet pipe 5 is parallel to the central axis of the screw 3. Such a design can stabilize the relative position of the air outlet pipe 5 and the screw 3, which is convenient for the coordinated drying process. A plurality of air outlets are evenly arranged on the air outlet pipe 5, and the air outlet direction of the air outlet is toward the conveyor belt 2. The evenly distributed air outlets can ensure that the entire cardboard surface can be fully dried, so that the hot air can directly contact the cardboard surface and improve the drying effect. The function of the air outlet is to blow the hot air evenly to the cardboard surface on the conveyor belt 2 to accelerate the drying process of the printing ink. Regarding the bellows connected to the air outlet pipe 5 and other similar devices for air supply, this application does not limit it.

[0045] In the embodiment of the present application, the cardboard printed in the previous printing process is placed on the conveyor belt 2, the handle 11 is rotated, and the distance between the pressure rollers 7 is adjusted according to the size and width of the cardboard. The conveyor belt 2 transports the cardboard to the bottom of the pressure roller 7 and rolls on the pressure roller 7. The drying device is started, and the multiple air outlets in the air outlet pipe 5 of the drying device evenly blow hot air to the surface of the cardboard. The hot air accelerates the drying process of the printing ink through the air outlet, so that the printing ink on the cardboard is quickly dried. The cardboard is continuously transported in the drying area, and the hot air is continuously blown. After the drying is completed, the cardboard continues to be transported to the next working area through the conveyor belt 2 for subsequent processing or packaging.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the description and drawings of the present invention shall be included in the protection scope of the present invention.

Claims

1. A carton environmental protection printing machine, comprising a device body (1), wherein a conveyor belt (2) is arranged inside the device body (1), wherein the conveyor belt (2) is used to transport cardboard, and a pressing roller (7) and a drying device are arranged above the conveyor belt (2), wherein: A screw rod (3) is rotatably arranged inside the equipment body (1), and a first threaded portion (301) and a second threaded portion (302) are arranged on the screw rod (3), and the thread rotation directions of the first threaded portion (301) and the second threaded portion (302) are opposite, and a pressure roller (7) is respectively arranged on the first threaded portion (301) and the second threaded portion (302), and the two pressure rollers (7) can move towards each other / backwards at the same time, and each pressure roller (7) can move in a direction perpendicular to a horizontal plane.

2. The environmentally friendly carton printing machine according to claim 1, characterized in that: The equipment body (1) is internally rotatably connected to two screw rods (3), and the drying device is located between the two screw rods (3).

3. The environmentally friendly carton printing machine according to claim 2, characterized in that: A round rod (4) is arranged in the device body (1) near each of the screw rods (3), and the central axis of any of the round rods (4) is parallel to the central axis of the screw rod (3); A support frame (6) is threadedly connected to the first threaded portion (301) and the second threaded portion (302) of each screw rod (3), and each support frame (6) is slidably connected to the round rod (4); A retractable telescopic rod is provided on one side of each support frame (6) facing the conveyor belt (2), and the telescopic movement direction of each telescopic rod is perpendicular to the horizontal plane.

4. The environmentally friendly carton printing machine according to claim 3, characterized in that: The bottom of any one of the telescopic rods is rotatably connected to a pressing roller (7).

5. The environmentally friendly carton printing machine according to claim 4, characterized in that: The telescopic rod comprises a first connecting rod (8) and a second connecting rod (9), wherein: The pressing roller (7) is rotatably connected to the bottom of the second connecting rod (9); The first connecting rod (8) is fixedly connected to the bottom of the support frame (6), the second connecting rod (9) is sleeved on the first connecting rod (8), a spring (10) is sleeved on the outer shell of the first connecting rod (8), and the spring (10) is located between the second connecting rod (9) and the support frame (6).

6. The environmentally friendly carton printing machine according to claim 5, characterized in that: When the pressure roller (7) is in rolling contact with the conveyor belt (2), the spring (10) is in a compressed state, and its pressure is directed toward the pressure roller (7).

7. The environmentally friendly carton printing machine according to claim 6, characterized in that: The drying device comprises an air outlet pipe (5), on which a plurality of air outlets are evenly arranged, and the air outlet directions of the air outlets are directed toward the conveyor belt (2).

8. The environmentally friendly carton printing machine according to claim 7, characterized in that: The central axis of the air outlet pipe (5) is parallel to the central axis of the screw rod (3).

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