CN215705071U - Paper bag printing machine - Google Patents

Abstract

The utility model discloses a paper bag printing machine, which comprises a machine frame, a printing mechanism and an ink supply mechanism, wherein the printing mechanism is arranged on the machine frame; the printing mechanism is arranged on the rack and comprises a printing plate roller, a printing bearing roller and a driving piece for driving the printing bearing roller and the printing plate roller to rotate, and a paper bag is accommodated between the printing plate roller and the printing bearing roller and passes through the printing plate roller and the printing bearing roller; the ink supply mechanism is arranged on the frame and comprises an ink box, a first inking roller positioned above the ink box and a second inking roller positioned above the first inking roller in an inclined mode, the bottom of the first inking roller is in contact with ink, the first inking roller is in contact with the second inking roller to transfer the ink, the second inking roller is in contact with a printing roller to transfer the ink, the first inking roller is provided with a first gear, the second inking roller is provided with a second gear, the first gear is meshed with the second gear, the tooth number of the first gear is larger than that of the second gear, and a one-way bearing is arranged between the first inking roller and the first gear. The paper bag printing machine can prevent the first ink applying roller and the second ink applying roller from being stuck, and is convenient to start.

Description

Paper bag printing machine

Technical Field

The utility model relates to the technical field of printing equipment, in particular to a paper bag printing machine.

Background

The paper bag printing machine is a kind of equipment for printing cement paper bag.

The common paper bag printing machine is provided with an ink supply mechanism, a printing plate roller and a printing roller, wherein the ink supply mechanism is used for inking the printing plate roller, a paper bag passes between the printing plate roller and the printing roller, and the printing plate roller prints on the paper bag.

To achieve uniform inking of the inking mechanism, the inking mechanism is generally provided with a first inking roller which picks up ink in the cartridge and transfers it to a second inking roller which in turn transfers it to the form roller.

However, current paper bag printing machine shuts down for a long time, and the ink is done the back, and first inking roller and second inking roller can be glued by dry ink tightly, and when needs restart, first inking roller and the card of second inking roller are dead unable to rotate, lead to the unable normal start of paper bag printing machine.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the paper bag printing machine can prevent the first ink applying roller and the second ink applying roller from being stuck, and is convenient to start.

A paper bag printing machine according to an embodiment of the first aspect of the utility model comprises: a frame; the printing mechanism is arranged on the rack and comprises a printing plate roller, a printing bearing roller and a driving piece for driving the printing bearing roller and the printing plate roller to rotate, a paper bag is accommodated between the printing plate roller and the printing bearing roller to pass through, the printing plate roller is used for printing on the paper bag, and the printing bearing roller is used for supporting the paper bag; ink supply mechanism installs in the frame, be located form roller one side, include the ink horn, be located the first inking roller of ink horn top, be located the second inking roller of first inking roller oblique top, the bottom and the ink contact of first inking roller, first inking roller with second inking roller contact ink transfer, second inking roller with form roller contact ink transfer, first inking roller is provided with first gear, second inking roller is provided with the second gear, first gear with the meshing of second gear, the number of teeth of first gear is greater than the number of teeth of second gear, first inking roller with be provided with one-way bearing between the first gear.

The paper bag printing machine provided by the embodiment of the utility model has at least the following beneficial effects: through setting up the frame, make the frame can support whole equipment operation.

Through setting up printing plate roller, holding printing roller and drive holding printing roller and printing plate roller pivoted driving piece, holding container bag passes through between printing plate roller and the holding printing roller to, driving piece drive printing plate roller and holding printing roller rotate, make printing plate roller and holding printing roller can follow the container bag and remove and rotate, printing plate roller prints on the container bag, and holding printing roller supports the container bag, and then, realizes the printing function of printing machine.

In addition, the ink supply mechanism is arranged and installed on the rack, so that the ink supply mechanism can supply ink to the printing plate roller.

Through setting up the ink horn, being located the first inking roller of ink horn top, being located the second inking roller of first inking roller oblique top, first inking roller and second inking roller butt ink transfer, second inking roller and form roller butt ink transfer to, through the transmission of first inking roller and second inking roller, the ink can be scribbled on the form roller more evenly, and then, makes the typeface of form roller printing on the container bag clearer.

Meanwhile, the first inking roller is provided with the first gear, the second inking roller is provided with the second gear, and the first gear is meshed with the second gear, so that the first inking roller and the second inking roller are in meshed transmission through the first gear and the second gear, the arrangement of a driving device is reduced, and the equipment manufacturing cost is reduced.

Moreover, the first inking roller lifts ink from the ink box, the ink adhered to the first inking roller is thick and easy to splash, and the tooth number of the first gear is larger than that of the second gear, so that the rotating speed of the first inking roller is smaller than that of the second inking roller, and the ink on the first inking roller is prevented from splashing to pollute equipment and working environment.

In addition, a one-way bearing is arranged between the first inking roller and the first gear, and it should be explained that the one-way bearing is a bearing which can rotate freely in one direction and is locked in the other direction, and the function of the one-way bearing on the equipment can be discussed in the following states:

1. when equipment normal operating, the second inking roller drives the second gear and rotates, and the second gear drives first gear through meshing with first gear and rotates, and one-way bearing is in the lock dead state this moment, therefore, first gear drives first inking roller through one-way bearing and rotates to, avoid first inking roller to steal to stop.

2. After equipment halts for a long time, the first inking roller and the second inking roller are adhered tightly by dry ink, when the equipment starts, the second inking roller drives the first inking roller to rotate, the rotating speed of the second inking roller is the same as that of the first inking roller at the moment, the rotating speed of the second inking roller is the same as that of the second gear, the rotating speed of the first inking roller is larger than that of the first gear, the one-way bearing is in a free rotation state at the moment, the one-way bearing does not generate resistance, and the first inking roller can idle.

3. The first inking roller of idle running state receives the resistance of ink and slows down gradually, and when the rotational speed of first inking roller reduced to the rotational speed the same with first gear, the one-way bearing changed into the lock state, and first gear passes through the rotation of the one-way bearing drive first inking roller, avoids first inking roller to steal to stop.

According to some embodiments of the present invention, the first inking roller includes a first roller body and a first shaft body coaxially disposed, the first roller body is sleeved on the first shaft body, the first roller body is used for transferring ink of the ink cartridge to the second inking roller, one end of the first shaft body is rotatably connected with the frame, and the other end of the first shaft body is rotatably connected with the frame.

The beneficial results are: through setting up first inking roller into first roll body and the first axis body of coaxial setting, first roll body suit is on first axis body, and first roll body is used for transmitting the ink of ink horn to second inking roller, and the one end and the frame of first axis body rotate to be connected, and the other end and the frame of first axis body rotate to be connected to, the diameter of first axis body is less than the diameter of first roll body, saves the material cost of first inking roller.

According to some embodiments of the utility model, the one-way bearing is fitted over the first shaft body, and the first gear is fitted over the one-way bearing.

The beneficial results are: through the unidirectional bearing suit on first axis body, first gear suit is on unidirectional bearing to, on the one hand, can choose for use the unidirectional bearing that the diameter is littleer, reduce cost, on the other hand can reserve sufficient spatial arrangement unidirectional bearing and first gear between first axis body and the second inking roller, avoids influencing the clearance between first roll body and the second inking roller.

According to some embodiments of the utility model, the second inking roller comprises a second roller body and a second shaft body, the second roller body and the second shaft body being coaxially arranged, the second roller body being sleeved on the second shaft body, the second roller body being used for inking the printing roller, one end of the second shaft body being rotatably connected to the frame, and the other end of the second shaft body being rotatably connected to the frame.

The beneficial results are: the second inking roller is coaxially arranged on the second roller body and the second shaft body, the second roller body is sleeved on the second shaft body, the second roller body is used for inking the printing plate roller, one end of the second shaft body is rotatably connected with the rack, the other end of the second shaft body is rotatably connected with the rack, and therefore the diameter of the second shaft body is smaller than that of the second roller body, and the material cost of the second inking roller is saved.

According to some embodiments of the utility model, the second gear is sleeved on the second shaft body.

The beneficial results are: by sleeving the second gear on the second shaft body, enough space can be reserved between the second shaft body and the first inking roller to arrange the second gear, and the influence on the gap between the second roller body and the first inking roller is avoided.

According to some embodiments of the utility model, a top surface of the ink cartridge is open.

The beneficial results are: through the open setting of the top surface with the ink horn to, on the one hand, first inking roller can contact the ink in the ink horn smoothly, and on the other hand, conveniently adds the ink to the ink horn.

According to some embodiments of the utility model, the ink cartridge is provided with an ink outlet at a bottom thereof, the ink outlet being provided with a stopper.

The beneficial results are: set up out the china ink mouth through the bottom at the ink horn to, when equipment shut down, conveniently take out the ink of ink horn, in addition, the china ink mouth sets up the jam, thereby, when equipment operation, the china ink mouth is plugged up in the jam, avoids the ink to flow from a china ink mouth.

According to some embodiments of the utility model, the form roller drives the second inking roller in rotation, the form roller is provided with a third gear, the second inking roller is provided with a fourth gear, and the third gear and the fourth gear are in mesh.

The beneficial results are: in addition, the third gear is arranged on the printing roller, the fourth gear is arranged on the second inking roller, and the third gear is meshed with the fourth gear, so that the printing roller and the second inking roller can be in meshed transmission through the third gear and the fourth gear.

According to some embodiments of the utility model, the printing plate roller is provided with a third gear and the printing roller is provided with a fifth gear, the third gear and the fifth gear are in mesh, and the driving member drives one of the printing plate roller and the printing roller to rotate.

The beneficial results are: the third gear is arranged on the printing roller, the fifth gear is arranged on the printing roller, and the third gear is meshed with the fifth gear, so that the printing roller and the printing roller can be meshed and driven through the third gear and the fourth gear, meanwhile, the driving piece drives one of the printing roller and the printing roller to rotate, the other of the printing roller and the printing roller can also rotate simultaneously, the arrangement of a power mechanism is reduced, and the equipment cost is reduced.

According to some embodiments of the utility model, the frame is provided with a support bar supporting the ink cartridge.

The beneficial results are: by providing the support rod on the chassis, the support rod supports the ink cartridge, thereby enabling the ink cartridge to be fixed below the first inking roller.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a paper bag printing machine according to an embodiment of the utility model.

Reference numerals: 100-machine frame, 110-printing mechanism, 120-printing plate roller, 130-printing roller, 140-driving piece, 150-ink supply mechanism, 160-ink box, 170-first ink roller, 180-second ink roller, 190-first gear, 200-second gear, 210-one-way bearing, 220-first roller body, 230-first shaft body, 240-second roller body, 250-second shaft body, 260-ink outlet, 270-plug, 280-third gear, 290-fourth gear, 300-fifth gear and 310-supporting rod.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A paper bag printing machine according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

Referring to fig. 1, the paper bag printing machine according to the embodiment of the present invention includes a frame 100, a printing mechanism 110, and an ink supply mechanism 150.

For the rack 100, the present embodiment enables the rack 100 to support the whole equipment to operate by providing the rack 100.

For the printing mechanism 110, the printing mechanism 110 is mounted on the frame 100, the printing mechanism 110 includes a printing plate roller 120, a printing roller 130, and a driving member 140 for driving the printing roller 130 and the printing roller 120 to rotate, a paper bag is accommodated between the printing plate roller 120 and the printing roller 130, the printing plate roller 120 is used for printing on the paper bag, and the printing roller 130 is used for supporting the paper bag.

By arranging the printing plate roller 120, the printing roller 130 and the driving element 140 for driving the printing roller 130 and the printing roller 120 to rotate, paper bags are accommodated between the printing plate roller 120 and the printing roller 130 to pass through, so that the driving element 140 drives the printing plate roller 120 and the printing roller 130 to rotate, the printing plate roller 120 and the printing roller 130 can move and rotate along with the paper bags, the printing plate roller 120 prints on the paper bags, and the printing roller 130 supports the paper bags, thereby realizing the printing function of the printing machine.

For the inking mechanism 150, the inking mechanism 150 is mounted on the frame 100 on the side of the form roller 120, and includes an ink tank 160, a first inking roller 170 positioned above the ink tank 160, and a second inking roller 180 positioned diagonally above the first inking roller 170, the bottom of the first inking roller 170 being in contact with ink, the first inking roller 170 being in contact with the second inking roller 180 to transfer ink, the second inking roller 180 being in contact with the form roller 120 to transfer ink, the first inking roller 170 being provided with a first gear 190, the second inking roller 180 being provided with a second gear 200, the first gear 190 being engaged with the second gear 200, the number of teeth of the first gear 190 being greater than the number of teeth of the second gear 200, and a one-way bearing 210 being provided between the first inking roller 170 and the first gear 190.

The present embodiment is configured by providing the ink supply mechanism 150, and the ink supply mechanism 150 is mounted on the frame 100, so that the ink supply mechanism 150 can supply ink to the printing plate roller 120.

The inking mechanism 150 includes an ink tank 160, a first inking roller 170 disposed above the ink tank 160, and a second inking roller 180 disposed obliquely above the first inking roller 170, wherein the bottom of the first inking roller 170 contacts ink, the first inking roller 170 contacts the second inking roller 180 to transfer ink, and the second inking roller 180 contacts the printing roller 120 to transfer ink, so that the ink can be more uniformly applied to the printing roller 120 by the transfer of the first inking roller 170 and the second inking roller 180, and the characters printed on the paper bag by the printing roller 120 are clearer.

Meanwhile, the first inking roller 170 is provided with the first gear 190, the second inking roller 180 is provided with the second gear 200, and the first gear 190 is meshed with the second gear 200, so that the first inking roller 170 and the second inking roller 180 are in meshed transmission through the first gear 190 and the second gear 200, the arrangement of a driving device is reduced, and the manufacturing cost of equipment is reduced.

Further, the first inking roller 170 lifts ink from the ink tank 160, the ink adhered to the first inking roller 170 is thick and easily splashed, and the number of teeth of the first gear 190 is larger than that of the second gear 200, so that the rotation speed of the first inking roller 170 is smaller than that of the second inking roller 180, and further, the ink splashed on the first inking roller 170 is prevented from contaminating the apparatus and the working environment.

In addition, a one-way bearing 210 is arranged between the first inking roller 170 and the first gear 190, it should be noted that the one-way bearing 210 is a bearing that can rotate freely in one direction and lock in the other direction, and the function of the one-way bearing 210 on the device can be discussed in the following states:

1. when the apparatus is normally operated, the second inking roller 180 rotates the second gear 200, the second gear 200 rotates the first gear 190 by engaging with the first gear 190, and the one-way bearing 210 is in a locked state, so that the first gear 190 rotates the first inking roller 170 by the one-way bearing 210, thereby preventing the first inking roller 170 from being stolen.

2. When the equipment is stopped for a long time, the first inking roller 170 and the second inking roller 180 are stuck by dry ink, when the equipment is started, the second inking roller 180 drives the first inking roller 170 to rotate, the rotating speed of the second inking roller 180 is the same as that of the first inking roller 170, the rotating speed of the second inking roller 180 is the same as that of the second gear 200, the rotating speed of the first inking roller 170 is larger than that of the first gear 190, the one-way bearing 210 is in a free rotating state, the one-way bearing 210 does not generate resistance, and the first inking roller 170 can idle.

3. The first inking roller 170 in the idle state is gradually decelerated by the resistance of the ink, when the rotational speed of the first inking roller 170 is decreased to be the same as the rotational speed of the first gear 190, the one-way bearing 210 is changed into the locked state, and the first gear 190 drives the first inking roller 170 to rotate through the one-way bearing 210, thereby preventing the first inking roller 170 from being stolen and stopped.

In some embodiments, the first inking roller 170 includes a first roller body 220 and a first shaft 230 coaxially disposed, the first roller body 220 is sleeved on the first shaft 230, the first roller body 220 is used for transferring ink of the ink cartridge 160 to the second inking roller 180, one end of the first shaft 230 is rotatably connected to the frame 100, and the other end of the first shaft 230 is rotatably connected to the frame 100.

The present embodiment saves the material cost of the first inking roller 170 by providing the first inking roller 170 as a first roller body 220 and a first shaft body 230 which are coaxially arranged, the first roller body 220 being sleeved on the first shaft body 230, the first roller body 220 being used for transferring the ink of the ink cartridge 160 to the second inking roller 180, one end of the first shaft body 230 being rotatably connected to the frame 100, and the other end of the first shaft body 230 being rotatably connected to the frame 100, so that the diameter of the first shaft body 230 is smaller than the diameter of the first roller body 220.

Further, the one-way bearing 210 is sleeved on the first shaft 230, and the first gear 190 is sleeved on the one-way bearing 210.

This embodiment is through the unidirectional bearing 210 suit on first axis body 230, and first gear 190 suit is on unidirectional bearing 210 to, on the one hand, can choose for use the unidirectional bearing 210 that the diameter is littleer, reduce cost, on the other hand, can reserve sufficient space arrangement unidirectional bearing 210 and first gear 190 between first axis body 230 and the second inking roller 180, avoid influencing the clearance between first roll body 220 and the second inking roller 180.

In some specific embodiments, the second inking roller 180 includes a second roller body 240 and a second roller body 250 coaxially disposed, the second roller body 240 is sleeved on the second roller body 250, the second roller body 240 is used for inking the printing plate roller 120, one end of the second roller body 250 is rotatably connected to the frame 100, and the other end of the second roller body 250 is rotatably connected to the frame 100.

In the present embodiment, the second inking roller 180 is provided with the second roller body 240 and the second roller body 250 which are coaxially arranged, the second roller body 240 is sleeved on the second roller body 250, the second roller body 240 is used for inking the printing plate roller 120, one end of the second roller body 250 is rotatably connected with the frame 100, and the other end of the second roller body 250 is rotatably connected with the frame 100, so that the diameter of the second roller body 250 is smaller than that of the second roller body 240, and the material cost of the second inking roller 180 is saved.

Further, the second gear 200 is fitted around the second shaft body 250.

In the present embodiment, the second gear 200 is sleeved on the second shaft body 250, so that a sufficient space can be reserved between the second shaft body 250 and the first inking roller 170 to arrange the second gear 200, and the gap between the second roller body 240 and the first inking roller 170 is prevented from being affected.

In some embodiments, the ink cartridge 160 is configured to be open on a top surface.

The present embodiment is configured by opening the top surface of the ink cartridge 160, so that the first inking roller 170 can smoothly contact the ink in the ink cartridge 160 on the one hand, and the ink can be easily applied to the ink cartridge 160 on the other hand.

In some specific embodiments, the ink outlet 260 is provided at the bottom of the ink cartridge 160, and the ink outlet 260 is provided with a stopper 270.

This embodiment is through setting up ink outlet 260 in the bottom of ink horn 160 to, when equipment shut down, conveniently take out the ink of ink horn 160, in addition, ink outlet 260 sets up and blocks up 270, thereby, when equipment operation, blocks up ink outlet 260 by the jam 270, avoids the ink to flow out from ink outlet 260.

In particular embodiments, the form roller 120 rotates the second inking roller 180, the form roller 120 is provided with a third gear 280, the second inking roller 180 is provided with a fourth gear 290, and the third gear 280 and the fourth gear 290 mesh with each other.

In the present embodiment, the second inking roller 180 is rotated by rotating the form roller 120, so that the second inking roller 180 is driven to rotate without separately providing power, the provision of the power mechanism is reduced, and the equipment cost is reduced, and at the same time, the third gear 280 is provided on the form roller 120, the fourth gear 290 is provided on the second inking roller 180, and the third gear 280 and the fourth gear 290 are engaged with each other, so that the form roller 120 and the second inking roller 180 can be driven to engage with each other by the third gear 280 and the fourth gear 290.

In some specific embodiments, the printing plate roller 120 is provided with a third gear 280, the printing roller 130 is provided with a fifth gear 300, the third gear 280 and the fifth gear 300 are engaged, and the driving member 140 drives one of the printing plate roller 120 and the printing roller 130 to rotate.

In the embodiment, the third gear 280 is arranged on the printing plate roller 120, the fifth gear 300 is arranged on the printing roller 130, and the third gear 280 is meshed with the fifth gear 300, so that the printing roller and the printing roller 130 can be meshed and transmitted through the third gear 280 and the fourth gear 290, meanwhile, the driving member 140 drives one of the printing plate roller 120 and the printing roller 130 to rotate, and the other of the printing roller and the printing roller 130 can also rotate simultaneously, thereby reducing the arrangement of a power mechanism and reducing the equipment cost.

In some embodiments, the rack 100 is provided with a support bar 310, and the support bar 310 supports the ink cartridge 160.

The present embodiment enables the ink cartridges 160 to be fixed below the first inking roller 170 by providing the support rods 310 at the frame 100, the support rods 310 supporting the ink cartridges 160.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (10)

1. A paper bag printing machine comprising:

a frame (100);

the printing mechanism (110) is installed on the machine frame (100) and comprises a printing plate roller (120), a printing roller (130) and a driving piece (140) for driving the printing roller (130) and the printing roller (120) to rotate, a paper bag is accommodated between the printing plate roller (120) and the printing roller (130) to pass through, the printing plate roller (120) is used for printing on the paper bag, and the printing roller (130) is used for supporting the paper bag;

an ink supply mechanism (150) which is arranged on the frame (100) and is positioned on one side of the printing plate roller (120) and comprises an ink box (160), a first inking roller (170) positioned above the ink box (160), and a second inking roller (180) positioned obliquely above the first inking roller (170), the bottom of the first form roller (170) being in contact with ink, the first form roller (170) being in contact with the second form roller (180) for transferring ink, the second inking roller (180) is in contact with the printing plate roller (120) for transferring ink, the first inking roller (170) is provided with a first gear (190), the second inking roller (180) being provided with a second gear (200), the first gear (190) and the second gear (200) being in engagement, the number of teeth of the first gear (190) is greater than the number of teeth of the second gear (200), a one-way bearing (210) is disposed between the first inking roller (170) and the first gear (190).

2. The paper bag printing machine according to claim 1, wherein the first inking roller (170) comprises a first roller body (220) and a first shaft body (230) which are coaxially arranged, the first roller body (220) is sleeved on the first shaft body (230), the first roller body (220) is used for transferring the ink of the ink box (160) to the second inking roller (180), one end of the first shaft body (230) is rotatably connected with the frame (100), and the other end of the first shaft body (230) is rotatably connected with the frame (100).

3. The paper bag printing machine according to claim 2, wherein said one-way bearing (210) is fitted over said first shaft (230), and said first gear (190) is fitted over said one-way bearing (210).

4. The paper bag printing machine according to claim 1, wherein the second inking roller (180) comprises a second roller body (240) and a second shaft body (250) which are coaxially arranged, the second roller body (240) is sleeved on the second shaft body (250), the second roller body (240) is used for inking the printing roller (120), one end of the second shaft body (250) is rotatably connected with the frame (100), and the other end of the second shaft body (250) is rotatably connected with the frame (100).

5. The paper bag printing machine according to claim 4, wherein said second gear (200) is fitted over said second shaft (250).

6. The paper bag printing machine according to claim 1, wherein the top surface of the ink cartridge (160) is open.

7. Paper bag printing machine according to claim 1, characterised in that the bottom of the cartridge (160) is provided with an ink outlet (260), the ink outlet (260) being provided with a plug (270).

8. Paper bag printing machine according to claim 1, characterised in that said printing roller (120) rotates said second inking roller (180), said printing roller (120) being provided with a third gear (280), said second inking roller (180) being provided with a fourth gear (290), said third gear (280) and said fourth gear (290) being in mesh.

9. The paper bag printing machine according to claim 1, wherein said printing plate roller (120) is provided with a third gear (280), said printing roller (130) is provided with a fifth gear (300), said third gear (280) and said fifth gear (300) are engaged, and said driving member (140) drives one of said printing plate roller (120) and said printing roller (130) in rotation.

10. Paper bag printing machine according to claim 1, characterised in that the frame (100) is provided with a support bar (310), the support bar (310) supporting the ink cartridge (160).

Images