CN109664600B

CN109664600B - Multi-stage color printing production line for food packaging bags

Info

Publication number: CN109664600B
Application number: CN201811612745.8A
Authority: CN
Inventors: 张宏彦
Original assignee: Chongqing Fumei Packaging Printing Co ltd
Current assignee: Chongqing Fumei Packaging Printing Co ltd
Priority date: 2018-12-27
Filing date: 2018-12-27
Publication date: 2020-09-01
Anticipated expiration: 2038-12-27
Also published as: CN109664600A

Abstract

The invention relates to the technical field of packaging bag processing, and discloses a multi-stage color printing production line of a food packaging bag, which comprises a rack, wherein an inking roller, a printing roller and a supporting roller are rotatably connected to the rack, a containing cavity for storing ink is formed in the inking roller, a plurality of uniformly distributed ink outlet holes are formed in the inking roller, the inking roller is coaxially connected with a first rotating shaft, a cavity communicated with the containing cavity is formed in the first rotating shaft, a piston is slidably connected in the cavity, an ink box is arranged on the rack, an ink inlet communicated with the ink box is formed in the first rotating shaft, and a driving mechanism for driving the piston to reciprocate is arranged on the rack. The invention can realize uniform inking by arranging the inking roller.

Description

Multi-stage color printing production line for food packaging bags

Technical Field

The invention relates to the technical field of packaging bag processing, in particular to a multistage color printing production line of a food packaging bag.

Background

The appearance of the packaging bag brings great convenience for life and travel of people, along with the continuous development of the society, the using amount of the packaging bag is larger and larger, the requirements on the quality and the appearance of the packaging bag are higher and higher, and characters and patterns are frequently printed on the surface of the packaging bag for the requirements of attractiveness, publicity and the like. The existing printing machines are roughly divided into two types of press printing and roll printing according to different printing types, wherein the press printing is that a printing plate directly contacts with a packaging bag in a pressing mode, but the packaging bag is easy to damage due to poor pressure control during pressing because of different quality of the packaging bag, and the printing plate is printed once after reciprocating once during the press printing, so that the printing efficiency is low; the roll-in printing is to print and transmit the packing paper through the rotation of the printing roller shaft, but the existing roll-in mostly adopts the form of ink-jet to ink the printing roller shaft, so that the ink is easy to splash during ink-jet, the packing bag is easy to be polluted, the waste of the ink is caused, and the problem of poor printing effect caused by uneven ink-jet is also existed.

Disclosure of Invention

The invention aims to provide a multistage color printing production line of a food packaging bag, which aims to solve the problem of poor printing effect caused by uneven inking in the prior art.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

food package bag's multistage colour printing production line, which comprises a frame, it is connected with inking roller to rotate in the frame, printing roller and backing roll, it has the appearance chamber that is used for storing printing ink to open in the inking roller, it has a plurality of evenly distributed's play china ink hole to open on the inking roller, inking roller coaxial coupling has first pivot, it has the cavity that communicates with holding the chamber to open in the first pivot, sliding connection has the piston in the cavity, be equipped with the ink box in the frame, it has the ink inlet mouth that communicates with the ink box to open in the first pivot, be equipped with in the frame and be used for driving the piston to carry out reciprocating motion's.

Compared with the prior art, the invention has the following principle and beneficial effects: the driving mechanism drives the piston to reciprocate, the pressure intensity of the cavities at two sides of the piston is changed by utilizing the reciprocating movement of the piston, so that the pressure intensity in the cavity at one side communicated with the ink tank and the containing cavity is changed, the ink in the ink tank enters the cavity by utilizing the change of the pressure intensity, and the ink in the cavity intermittently enters the containing cavity; in the rotating process of the inking roller, the ink in the containing cavity flows to the surface of the inking roller through the ink outlet hole, the inking roller is abutted against the printing roller, the inking roller coats the ink on the surface of the printing roller in the rotating process, and the ink can be promoted to flow out by the centrifugal force generated when the inking roller rotates due to certain viscosity, so that the effect of quickly and uniformly inking is achieved. Through setting up cavity and piston, transmit the printing ink in the ink tank to holding the chamber when using, realize supplying ink in real time, rather than directly add printing ink to inking roller, printing ink contacts with the air for a long time and is oxidized when can avoiding not using, simultaneously still can prevent that the excessive volatile composition in the printing ink from volatilizing makes printing ink harden in holding the intracavity, and leads to the condition of unable inking.

Furthermore, the driving mechanism comprises a piston rod fixedly connected with the piston, gear teeth are arranged on the piston rod, an elastic part is arranged between the piston and the first rotating shaft, the printing roller is coaxially connected with a first bevel gear, a second bevel gear is meshed with the first bevel gear, a sector gear is coaxially connected with the second bevel gear, and the piston rod is meshed with the sector gear through the gear teeth.

When the printing roller rotates, the first bevel gear is driven to rotate by the first bevel gear, the second bevel gear is driven to rotate by the second bevel gear, the sector gear is intermittently meshed with the piston rod, and the piston rod is driven to move; when the sector gear is meshed with the piston rod, the piston rod is driven to move forwards, the piston rod drives the piston to move forwards, the elastic piece is deformed by the piston, meanwhile, the pressure intensity in the cavity is reduced, and at the moment, the ink in the ink box enters the cavity through the pressure difference; when the sector gear is separated from the piston rod, the elastic piece recovers deformation and pushes the piston to reset, and at the moment, the piston pushes the ink in the cavity into the accommodating cavity. Through setting up actuating mechanism, the rotation of linkage printing roller has realized automatic china ink that adds, need not additionally to set up the power supply, has reached energy-conserving effect.

Furthermore, a plurality of stirring sheets are connected in the accommodating cavity in a rotating manner.

When the ink in the cavity enters the containing cavity, the stirring sheet is impacted, so that the stirring sheet can be driven to rotate, the ink is stirred, and the ink can be uniformly mixed; when the inking roller rotates, the ink in the containing cavity also rotates along with the inking roller and can drive the stirring sheet to rotate, so that the ink is stirred by the stirring sheet; the stirring sheet is arranged, so that the ink can be further prevented from hardening, and better inking is ensured.

Furthermore, a heating element is arranged in the inner wall of the inking roller.

The heating element is arranged, so that the ink can be heated under the condition of low ambient temperature, and the ink is prevented from being solidified in the cavity to influence the inking.

Further, a sponge layer for inking is arranged on the outer wall of the inking roller.

Set up the sponge layer, utilize the compliance and the permeability of sponge to carry out the inking, can carry out the inking with the mode of soaking, avoid printing ink to become on the drop form directly falls to the printing roller, can make printing ink can attach to the printing roller better on, can further improve the effect of even inking.

Furthermore, the two ends of the supporting roller are coaxially connected with a second rotating shaft, the rack is connected with a sliding block in a sliding mode, and the second rotating shaft is connected to the sliding block in a rotating mode.

Set up the slider to adjust the distance between backing roll and the printing plate through the position of adjusting the slider, with the wrapping bag of adaptation different thickness, thereby enlarge this device's application range.

Drawings

FIG. 1 is a front view of an embodiment of the present invention;

FIG. 2 is a side view of a printing mechanism in an embodiment of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a feeding roller 1, a pair of rollers 2, a drying box 3, a material guide roller 4, a material collecting roller 5, an ink applying roller 6, a printing roller 7, a support roller 8, a sponge layer 9, a containing cavity 10, a stirring sheet 11, an ink outlet hole 12, a first rotating shaft 13, a cavity 14, an ink box 15, an ink inlet 16, a lantern ring 17, a second one-way valve 18, a piston 19, a piston rod 20, an elastic part 21, a first bevel gear 22, a second bevel gear 23, a sector gear 24, a bearing 25, a second rotating shaft 26, a sliding block 27, a hydraulic cylinder 28 and a heating part 29.

The embodiment is basically as shown in the attached figures 1 and 2:

food package bag's multistage colour printing production line, including the frame, be equipped with drop feed mechanism, leveling mechanism, printing mechanism, drying mechanism and receiving agencies from a left side to the right side in the frame. The discharging mechanism comprises a discharging roller 1 which is rotationally connected to the rack; the leveling mechanism comprises a pair of rollers 2, so that the packaging bag is more leveled before printing through rolling, and the packaging bag is prevented from being wrinkled, so that the printing quality is improved; the drying mechanism comprises a drying box 3, the left side and the right side of the drying box 3 are respectively provided with an inlet and an outlet, and a material guide roller 4 is rotatably connected in the drying box 3 to ensure that the packaging bags can be better conveyed; the receiving mechanism comprises a receiving roller 5 which is rotatably connected to the rack and a motor which is used for driving the receiving roller 5.

The printing mechanism comprises an inking roller 6, a printing roller 7 and a supporting roller 8 which are rotatably connected on the frame from top to bottom, and the inking roller 6 is abutted against the printing roller 7; a sponge layer 9 for inking is arranged on the outer wall of the inking roller 6 to promote inking; a containing cavity 10 for storing ink is formed in the inking roller 6, and a plurality of stirring blades 11 are rotatably connected in the containing cavity 10 to stir the ink; the inking roller 6 is provided with a plurality of evenly distributed ink outlet holes 12, a heating member 29 is arranged in the inner wall of the inking roller 6, and the heating member 29 is a heating wire in the embodiment.

The two ends of the inking roller 6 are coaxially connected with a first rotating shaft 13, a cavity 14 communicated with the cavity 10 is formed in the first rotating shaft 13, a first one-way valve is mounted on the inking roller 6 at the position where the cavity 14 is communicated with the cavity 10, and the first one-way valve is communicated with the cavity 10 in one way from the cavity 14; an ink tank 15 is arranged on the rack, an ink inlet 16 is formed in the first rotating shaft 13, a lantern ring 17 communicated with the ink inlet 16 is sleeved on the first rotating shaft 13, an inlet is formed in the lantern ring 17 and is communicated with the ink tank 15 through a guide pipe, and a second one-way valve 18 which is communicated in one way from the ink tank 15 to the cavity 14 is installed on the guide pipe; a piston 19 is slidably connected in the cavity 14, a piston rod 20 is fixedly connected to the piston 19, gear teeth are integrally formed on the piston rod 20, and an elastic member 21 is arranged between the piston 19 and the first rotating shaft 13, wherein the elastic member 21 is a spring in the embodiment; the printing roller 7 is coaxially connected with a first bevel gear 22, the first bevel gear 22 is engaged with a second bevel gear 23, the second bevel gear 23 is coaxially connected with a sector gear 24, the piston rod 20 is engaged with the sector gear 24 through gear teeth, and a connecting shaft between the sector gear 24 and the second bevel gear 23 is connected with a rack through a bearing 25.

The two ends of the supporting roller 8 are coaxially connected with a second rotating shaft 26, the frame is connected with a sliding block 27 in a sliding manner, the second rotating shaft 26 is connected to the sliding block 27 in a rotating manner, and the frame is provided with a hydraulic cylinder 28 for driving the sliding block 27 to move; a limiting block is hinged on the sliding block 27, and a plurality of limiting grooves for the limiting block to insert are formed in the rack, so that after the position of the supporting roller 8 is adjusted, the limiting block is inserted into the limiting grooves, and the position of the supporting roller 8 is further fixed.

During specific implementation, according to the thickness of the packaging bag to be printed, the distance between the printing roller 7 and the supporting roller 8 is adjusted, namely: and starting the air cylinder, driving the sliding block 27 to move up and down through the air cylinder, closing the air cylinder after the position of the supporting roller 8 is well adjusted, and simultaneously rotating the limiting plate to enable the limiting plate to be inserted into the corresponding limiting groove. The drying temperature in the drying box 3 is set to be within 60-80 ℃, then the motor is started, and the motor drives the material receiving roller 5 to rotate, so that the whole device is driven to operate.

When the printing roller 7 rotates, the first bevel gear 22 is driven to rotate, the first bevel gear 22 drives the second bevel gear 23 to rotate, the second bevel gear 23 drives the sector gear 24 to rotate, the sector gear 24 is intermittently meshed with the piston rod 20, and the piston rod 20 is driven to move forwards; when the sector gear 24 is meshed with the piston rod 20, the piston rod 20 is driven to move forwards, the piston rod 20 drives the piston 19 to move forwards, the piston 19 deforms the elastic piece 21, meanwhile, the internal pressure of the part of the cavity 14 communicated with the lantern ring 17 is reduced, and at the moment, ink in the ink box 15 enters the cavity 14 through the pressure difference; when sector gear 24 is separated from piston rod 20, elastic member 21 will recover its deformation and push piston 19 to return, and at this time piston 19 pushes ink in cavity 14 into chamber 10. The ink entering the cavity 10 has a certain impact effect on the stirring sheet 11, so that the stirring sheet 11 is driven to rotate, the ink is stirred, and the ink can be uniformly mixed; meanwhile, the ink flows out of the accommodating cavity 10 through the ink outlet hole 12 under the action of centrifugal force to reach the sponge layer 9, and the ink is uniformly smeared on the printing roller 7 through the sponge layer 9 in the rotating process of the inking roller 6 and the printing roller 7, so that the effect of uniform inking is achieved. The packaging bag is then printed by rotation of the printing roller 7.

The packaging bag after printing will enter into drying cabinet 3 and dry, make printing ink shaping on the packaging bag better, improve the effect of printing.

In addition, at low ambient temperatures, the ink may be heated by heating element 29 to prevent the ink from solidifying within chamber 10 and affecting the application of the ink.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that variations and modifications can be made by those skilled in the art without departing from the structure of the present invention. These should also be construed as the scope of the present invention, and they should not be construed as affecting the effectiveness of the practice of the present invention or the applicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. Food package bag's multistage colour printing production line, including the frame, rotate in the frame and be connected with inking roller, printing roller and backing roll, its characterized in that: the ink feeding roller is internally provided with a containing cavity for storing ink, the containing cavity is rotationally connected with a plurality of stirring blades, the ink feeding roller is provided with a plurality of uniformly distributed ink outlet holes, the ink feeding roller is coaxially connected with a first rotating shaft, the first rotating shaft is internally provided with a cavity communicated with the containing cavity, the cavity is internally and slidably connected with a piston, an ink box is arranged on the rack, the first rotating shaft is provided with an ink inlet communicated with the ink box, and the rack is provided with a driving mechanism for driving the piston to reciprocate; the driving mechanism comprises a piston rod fixedly connected with the piston, gear teeth are arranged on the piston rod, an elastic part is arranged between the piston and the first rotating shaft, the printing roller is coaxially connected with a first bevel gear, a second bevel gear is meshed on the first bevel gear, a sector gear is coaxially connected with the second bevel gear, and the piston rod is meshed with the sector gear through the gear teeth.

2. The multi-stage color printing production line of the food packaging bag according to claim 1, characterized in that: and a heating element is arranged in the inner wall of the inking roller.

3. The multi-stage color printing production line of the food packaging bag according to claim 1, characterized in that: and a sponge layer for inking is arranged on the outer wall of the inking roller.

4. The multistage color printing production line of food packaging bags according to any one of claims 1 to 3, characterized in that: the two ends of the supporting roller are coaxially connected with a second rotating shaft, the rack is connected with a sliding block in a sliding mode, and the second rotating shaft is connected to the sliding block in a rotating mode.