CN108621550B

CN108621550B - Device for printing

Info

Publication number: CN108621550B
Application number: CN201810326761.4A
Authority: CN
Inventors: 杨学智
Original assignee: Chongqing Chuanzhizhou Printing Design Co ltd
Current assignee: ANQING JIAXIN MEDICAL PRODUCTS Co.,Ltd.
Priority date: 2018-04-12
Filing date: 2018-04-12
Publication date: 2020-04-07
Anticipated expiration: 2038-04-12
Also published as: CN108621550A

Abstract

The invention relates to a printing device, which comprises a rack, wherein a printing pair roller is rotatably connected to the rack, an ink absorption block is attached to the bottom of the printing pair roller, a recovery box is arranged below the ink absorption block, an ink box is arranged on the outer side of the recovery box, a piston cylinder is arranged in the ink box, a piston opening is formed in one end, positioned in the ink box, of the piston cylinder, a drawing valve is arranged on the piston opening, a piston head is connected in the piston cylinder in a sliding mode, a piston rod is fixedly connected to the piston head, and a pull rod is connected to the piston rod; the piston cylinder is communicated with a pneumatic cylinder, a first one-way valve is arranged between the pneumatic cylinder and the piston cylinder, the pneumatic cylinder is connected with an ink outlet pipe, the ink outlet pipe is communicated with a spray head, the ink outlet pipe is provided with a second one-way valve, and the ink outlet pipe is provided with a control valve; the pull rod is fixedly connected with a butting plate, the rack is rotatably connected with a cam which butts against the butting plate, and a first spring is connected between the butting plate and the rack. The scheme changes the existing inking mode, prevents ink from splashing or being thrown away by the printing roller pair.

Description

Device for printing

Technical Field

The invention relates to the field related to printing, in particular to a printing device.

Background

Printing is a technique of transferring ink to the surface of a material such as paper, fabric, plastic, or leather by performing processes such as plate making, inking, and pressing on an original such as characters, pictures, photographs, or forgery prevention, and thereby mass-transferring the content of the original.

In the advertisement printing process, the side of printing roller contacts with the paper, and other positions of printing roller side dip in the ink tank, and when the printing roller rotated, the side of printing roller dipped in printing ink and contacted with the paper along with the rotation of printing roller to scribble printing ink on the paper. However, since the rotation speed of the printing roller is high, when the printing roller rotates at a high speed, the printing roller and the ink in the ink tank collide with each other, and the ink in the ink tank is easily splashed out. In addition, when the printing roller just dips ink, the ink is more, and the printing roller rotating at a high speed easily throws the dipped ink out. Therefore, the existing printing roller inking mode easily causes ink to splash or be thrown away by the printing roller, thereby causing ink waste and bringing inconvenience to paper printing.

Disclosure of Invention

The invention aims to provide a printing device, which changes the existing inking mode and prevents ink from splashing or being thrown off by a printing roller pair.

In order to achieve the purpose, the technical scheme of the invention is as follows: a printing device comprises a rack, wherein a printing roller pair is rotatably connected to the rack, an ink suction block fixed on the rack is attached to the bottom of the printing roller pair, a recovery box is arranged below the ink suction block, an ink box is arranged on the outer side of the recovery box, a piston cylinder is arranged in the ink box, a piston opening is formed in one end, located in the ink box, of the piston cylinder, a drawing valve is arranged on the piston opening, a piston head is slidably connected in the piston cylinder, a piston rod is fixedly connected to the piston head, and a pull rod is connected to the piston rod; the piston cylinder is communicated with an air pressure cylinder, a first one-way valve enabling ink to flow from the piston cylinder to the air pressure cylinder is arranged between the air pressure cylinder and the piston cylinder, the air pressure cylinder is connected with an ink outlet pipe, the ink outlet pipe is communicated with a nozzle facing the ink absorbing block, the ink outlet pipe is provided with a second one-way valve enabling the ink to flow from the air pressure cylinder to the nozzle, and the ink outlet pipe is provided with a control valve; the pull rod is fixedly connected with a butting plate, the rack is rotatably connected with a cam which butts against the butting plate, and a first spring is connected between the butting plate and the rack.

The working principle of the scheme is as follows: the printing roller pair is used for clamping two sides of the paper, so that the paper is subjected to double-sided printing. When the cam rotates, the cam can abut against the abutting plate to enable the abutting plate to move in the direction away from the cam, the first spring is used for enabling the abutting plate to reset, the abutting plate moves in the direction close to the cam, therefore, the abutting plate moves in a reciprocating mode under the action of the first spring and the cam, the abutting plate drives the piston rod to move in the piston cylinder in a reciprocating mode through the pull rod, and the piston rod drives the piston head to move in the piston cylinder in a reciprocating mode. The drawing valve is used for controlling whether the ink in the ink tank flows into the piston cylinder or not, when the piston head is pumped in the piston cylinder, the drawing valve is automatically opened under the action of the air pumping force of the piston head, and the ink in the ink tank is pumped into the piston cylinder by the piston head through the piston opening. When the piston head pushes the air, the drawing valve is automatically closed under the action of the pushing force of the piston head, so that the ink in the piston cylinder cannot flow back to the ink tank, meanwhile, the piston head pushes the ink in the piston cylinder into the first one-way valve and then enters the air pressure cylinder, the first one-way valve ensures the one-way flow of the ink from the piston cylinder to the air pressure cylinder, and the ink is prevented from flowing to the piston cylinder from the air pressure cylinder. The pneumatic cylinder is used for containing the ink pushed out by the piston head. The control valve is used for controlling whether the ink in the air pressure cylinder flows to the spray head or not, the ink in the air pressure cylinder is more and more, the space in the air pressure cylinder is less and less, the gas in the air pressure cylinder is compressed, the air pressure in the air pressure cylinder is more and more, after the air pressure in the air pressure cylinder reaches a certain degree, the control valve is opened, the ink in the air pressure cylinder is pressed into the second one-way valve under the action of the air pressure, flows to the spray head along the ink outlet pipe through the control valve, and is finally sprayed out of the spray head, meanwhile, the piston cylinder continuously supplies the ink to the air pressure cylinder, the air pressure in the air pressure cylinder is enabled to maintain a certain pressure value, and the spray head can continuously spray the ink. The ejected ink is absorbed by the ink absorbing block, and the ink absorbing block applies the absorbed ink to the printing roller, so that the printing roller prints on the paper. The recovery box is used for receiving ink which is sprayed out from the spray head and falls off, and the ink is prevented from falling on the ground to cause pollution.

When the technical scheme is adopted, the ink is sprayed to the ink absorbing block by the spray head, the ink absorbing block stores the ink, the ink is gradually smeared to the printing roller along with the rotation of the printing roller, the printing roller is not directly immersed in the ink box, the ink in the ink box can be prevented from being splashed out when the printing roller rotates, the ink is slowly smeared to the printing roller by the ink absorbing block, the ink amount on the printing roller is small, the ink cannot be thrown out, and the ink is prevented from being wasted. The air pressure cylinder is communicated between the nozzle and the piston cylinder, ink in the air pressure cylinder is sprayed out from the nozzle under the action of air pressure, and the reciprocating movement of the piston head is used for supplying the ink to the air pressure cylinder, so that the air pressure in the air pressure cylinder is kept constant, and the condition that the ink cannot be sprayed out due to the fact that the air pressure in the air pressure cylinder is reduced is prevented. Because can have continuous printing ink to get into in the pneumatic cylinder, so the air pressure is invariable in the pneumatic cylinder to can make printing ink continuously spout, compare and directly use the piston cylinder to push printing ink into the shower nozzle on: when the piston cylinder is exhausted, the nozzle can not eject ink, when the piston cylinder is pushed, the nozzle can eject ink, and the air pressure cylinder can enable the nozzle to continuously eject ink so as to continuously provide ink for the ink absorption block.

Further, a handle is rotatably connected to the control valve. The control valve is controlled to be opened or not by rotating the handle.

Further, a gear is coaxially connected to the cam, a rack which can be meshed with the gear is arranged on the outer side of the gear, a second spring is connected between the rack and the rack, the gear comprises a fixed part and a plurality of movable parts, the movable parts are uniformly distributed on the outer side of the fixed part in a radial shape, adjacent movable parts are connected in a sliding mode, third springs are fixedly connected between the movable parts and the fixed part, and meshing teeth which can be meshed with the rack are arranged on the movable parts; a plate spring is connected between the frame and the handle. When the gear rotates, the movable part is far away from the fixed part under the action of centrifugal force, the movable part slides relatively, the movable part moves towards the direction close to the rack, and the meshing teeth on the movable part are meshed with the rack, so that the rack is driven to move towards the direction close to the handle. Along with the movement of the rack, the rack is abutted against the handle and pushes the handle to rotate, so that the control valve is opened. When the control valve is opened by the rack, the bottom of the rack is smooth, and the bottom of the rack is not provided with meshing teeth meshed with the gear, so that the gear cannot rotate to drive the rack to continuously move upwards, and the rack is kept still. When not using this device, the gear does not rotate, and the second spring makes movable part and fixed part closely lean on together, meshing tooth and rack separation on the movable part, then the rack resets under the effect of third spring, and simultaneously, the leaf spring makes the handle reset to be convenient for carry out the printing work next time, need not manual control, convenient operation, degree of automation is high.

Further, the pull valve includes the apron, and the apron articulates on the inner wall of piston cylinder, is connected with the telescopic link between apron and the piston head, and the one end fixed connection of telescopic link is overhead at the piston, and the other end sliding connection of telescopic link is on the apron. When the piston head inhales, the cover plate is pulled upwards by the telescopic rod, so that the cover plate is assisted to be opened, the opening sensitivity of the cover plate is improved, and when the piston head pushes the air, the cover plate is pushed downwards by the telescopic rod, so that the piston opening is sealed and sealed more tightly by the cover plate.

Furthermore, a hose is connected to the opening of the piston, and the bottom end of the hose is located at the bottom end of the ink tank. Therefore, the ink in the ink tank enters the piston cylinder through the hose, and the ink in the ink tank is absorbed cleanly.

Further, the spray head is an atomizing spray head. The atomizing nozzle enables the sprayed ink to be dispersed, and the ink on the ink absorbing block is convenient to distribute more uniformly.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention;

FIG. 2 is an enlarged view of A in FIG. 1;

fig. 3 is an enlarged view of B in fig. 1.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the printing roller pair comprises a printing roller pair 1, a sponge block 2, a spray head 3, a recovery box 4, an ink outlet pipe 5, a plate spring 6, a control valve 7, a handle 8, a connecting pipe 9, a second one-way valve 10, an ink pump 11, a pneumatic cylinder 12, an ink inlet pipe 13, a first one-way valve 14, a hose 15, a piston cylinder 16, a piston head 17, a piston rod 18, a pull rod 19, an ink box 20, an abutting plate 21, a first spring 22, a first fixed block 23, a second fixed block 24, a second spring 25, a rack 26, a cam 27, a fixed part 28, a third spring 29, a movable part 30, a cover plate 31, an expansion rod 32, a gear 33 and a convex strip 34.

The embodiment is basically as shown in the attached figures 1-3: the utility model provides a device is used in printing, includes the frame, rotates in the frame and is connected with a set of printing pair roller 1, and the laminating of the bottom of printing pair roller 1 has the piece of inhaling the ink that bonds in the frame, inhales the ink piece and is sponge piece 2, and the below of sponge piece 2 is equipped with collection box 4, and the left side of collection box 4 is equipped with ink tank 20, and the intercommunication has connecting pipe 9 between ink tank 20 and the collection box 4, is equipped with the ink pump 11 that is arranged in making the printing ink in the collection box 4 enter into ink tank 20 on the connecting pipe 9. A piston cylinder 16 vertically arranged is arranged in the ink tank 20, a piston opening is formed in the bottom end of the piston cylinder 16, a hose 15 is connected to the piston opening, and the bottom end of the hose 15 is located at the bottom end of the ink tank 20. Piston head 17 is connected in piston cylinder 16 in a sliding manner, a drawing valve as shown in fig. 3 is arranged on the piston opening, the drawing valve comprises a cover plate 31, the left side portion of the cover plate 31 is hinged to the inner wall of the piston cylinder 16, an expansion link 32 is connected between the cover plate 31 and the piston head 17, the top end of the expansion link 32 is bonded on the piston head 17, and the bottom end of the expansion link 32 is connected on the cover plate 31 in a sliding manner. The piston head 17 is welded with a vertical piston rod 18, and the top of the piston rod 18 is connected with an L-shaped pull rod 19.

The right side of the piston cylinder 16 is provided with a pneumatic cylinder 12, an ink inlet pipe 13 is communicated between the bottom of the pneumatic cylinder 12 and the bottom of the piston cylinder 16, the ink inlet pipe 13 is provided with a first one-way valve 14 which enables ink to flow from the piston cylinder 16 to the pneumatic cylinder 12, the pneumatic cylinder 12 is connected with an ink outlet pipe 5 which is smaller than the diameter of the ink inlet pipe 13, the ink outlet pipe 5 is communicated with a nozzle 3 facing the sponge block 2, and the nozzle 3 is an atomizing nozzle. The ink outlet pipe 5 is provided with a second one-way valve 10 which enables ink to flow to the nozzle 3 from the air cylinder 12, the ink outlet pipe 5 is also provided with a control valve 7, the control valve 7 is rotatably connected with a handle 8, and a plate spring 6 is connected between the upper part of the handle 8 and the frame. The bottom end of the pull rod 19 is welded with a transversely arranged abutting plate 21, the rack is rotatably connected with a cam 27 abutting against the abutting plate 21, the cam 27 is connected with a motor, a first fixing block 23 welded on the rack is arranged below the abutting plate 21, and a first spring 22 is connected between the first fixing block 23 and the abutting plate 21.

The cam 27 is coaxially connected with a gear 33 as shown in fig. 2, the gear 33 comprises a circular fixed part 28 and a plurality of movable parts 30 which are coaxially connected with the cam 27, the plurality of movable parts 30 are radially and uniformly distributed on the outer side of the fixed part 28, and adjacent movable parts 30 are in sliding connection, and the sliding connection is specifically that: a convex strip 34 welded on the fixed part 28 is arranged between two adjacent movable parts 30, sliding grooves are arranged on the side parts of two adjacent movable parts 30, and the convex strip 34 is connected in the sliding grooves in a sliding manner; all welded between movable part 30 and the fixed part 28 has third spring 29, and the right side of gear 33 is equipped with rack 26, and the bottom of rack 26 is glossy, is equipped with on the movable part 30 can with the meshing tooth of rack 26 meshing, and the below of rack 26 is equipped with the second fixed block 24 of welding in the frame, is connected with second spring 25 between the bottom of second fixed block 24 and rack 26.

The specific implementation process is as follows: ink is placed in the ink tank 20, the motor is started, the motor drives the cam 27 to rotate, and the cam 27 drives the gear 33 to rotate. When the cam 27 rotates, the cam 27 continuously abuts against the abutting plate 21, the abutting plate 21 continuously extrudes the first spring 22, the abutting plate 21 reciprocates up and down under the action of the first spring 22 and the cam 27, the abutting plate 21 drives the piston rod 18 to reciprocate up and down through the pull rod 19, and the piston rod 18 drives the piston head 17 to reciprocate up and down in the piston cylinder 16. When the piston head 17 moves upward, the piston head 17 is evacuated, the piston head 17 pulls the cover plate 31 upward through the telescopic rod 32, and the cover plate 31 is rotated upward around the left side portion of the cover plate 31 to be opened by the evacuation of the piston head 17, and the ink in the ink tank 20 enters the piston cylinder 16 through the hose 15. When the piston head 17 moves downwards, the piston head 17 pushes air to enable the cover plate 31 to cover the piston opening at the bottom end of the piston cylinder 16, the telescopic rod 32 abuts against the cover plate 31, ink in the piston cylinder 16 is prevented from being pushed out of the piston opening, meanwhile, the piston head 17 pushes the ink in the piston cylinder 16 into the first one-way valve 14 and enters the air cylinder 12 through the ink inlet pipe 13, the ink in the air cylinder 12 is increased, and therefore the space in the air cylinder 12 is reduced and the air pressure in the air cylinder 12 is increased. Meanwhile, when the gear 33 rotates, the movable parts 30 move away from the fixed part 28 under the action of centrifugal force generated by rotation of the gear 33, adjacent movable parts 30 slide relatively, the diameter of the gear 33 is increased, and the meshing teeth on the movable parts 30 are close to the rack 26 and meshed with the rack 26, so that the rack 26 is driven to move upwards. When the rack 26 is abutted against the handle 8, the rack 26 pushes the handle 8 to rotate, the control valve 7 is opened, the ink in the air pressure cylinder 12 is pressed into the second one-way valve 10 under the action of air pressure, enters the spray head 3 through the ink outlet pipe 5 and is sprayed onto the sponge block 2 from the spray head 3, the sponge block 2 sucks the ink sprayed out from the spray head 3 together, and the ink is coated on the printing roller pair 1 along with the rotation of the printing roller pair 1, so that the ink is coated on the printing roller pair 1. Meanwhile, because the bottom of the rack 26 is smooth, the bottom of the rack 26 has no meshing teeth meshed with the gear 33, and therefore, the gear 33 cannot drive the rack 26 to move upwards continuously due to rotation, so that the rack 26 is kept still.

The ink is continuously fed into the air pressure cylinder 12 due to the reciprocating movement of the piston head 17, so that the ink is continuously replenished into the air pressure cylinder 12, the air pressure in the air pressure cylinder 12 is kept constant, and the continuous ink ejection of the nozzle 3 is facilitated.

After printing is finished, the motor is turned off, the gear 33 stops rotating, the movable part 30 approaches the fixed part 28 under the action of the third spring 29, the meshing teeth on the movable part 30 are separated from the rack 26, the rack 26 moves downwards under the action of the second spring 25 to be reset, and simultaneously the handle 8 is reset under the action of the plate spring 6 to close the control valve 7, so that next printing is facilitated.

The ink ejected from the head 3 drops into the recovery tank 4, and the ink pump 11 pumps the ink in the recovery tank 4 into the ink tank 20 through the connection pipe 9, thereby recycling the ink.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make various changes and modifications without departing from the concept of the present invention, and these should be construed as the scope of protection of the present invention, which will not affect the effect of the implementation of the present invention and the utility of the patent. The techniques, shapes, and structural parts, which are omitted from the description of the present invention, are all known techniques.

Claims

1. The utility model provides a device is used in printing, includes the frame, rotate in the frame and be connected with printing pair roller, its characterized in that: the bottom of the printing pair roller is attached with an ink absorption block fixed on the rack, a recovery box is arranged below the ink absorption block, an ink box is arranged outside the recovery box, a piston cylinder is arranged in the ink box, a piston port is formed in one end, located in the ink box, of the piston cylinder, a drawing valve is arranged on the piston port, a piston head is connected in the piston cylinder in a sliding mode, a piston rod is fixedly connected to the piston head, and a pull rod is connected to the piston rod; the ink-jet printing device comprises a piston cylinder, an ink-absorbing block, a piston cylinder, a piston, a first check valve, an ink outlet pipe, a second check valve and a control valve, wherein the piston cylinder is communicated with an air pressure cylinder, the first check valve enabling ink to flow from the piston cylinder to the air pressure cylinder is arranged between the air pressure cylinder and the piston cylinder, the ink outlet pipe is connected with the air pressure cylinder, the ink outlet pipe is communicated with a nozzle facing the ink-absorbing block, the ink outlet pipe is provided with the second check valve enabling ink to flow; the pull rod is fixedly connected with an abutting plate, the rack is rotatably connected with a cam abutting against the abutting plate, and a first spring is connected between the abutting plate and the rack; the pull valve comprises a cover plate, the cover plate is hinged to the inner wall of the piston cylinder, a telescopic rod is connected between the cover plate and the piston head, one end of the telescopic rod is fixedly connected to the piston head, and the other end of the telescopic rod is connected to the cover plate in a sliding mode.

2. A printing apparatus according to claim 1, wherein: and a handle is rotatably connected to the control valve.

3. A printing apparatus according to claim 2, wherein: the cam is coaxially connected with a gear, a rack meshed with the gear is arranged on the outer side of the gear, a second spring is connected between the rack and the rack, the gear comprises a fixed part and a plurality of movable parts, the movable parts are uniformly distributed on the outer side of the fixed part in a radial shape, adjacent movable parts are connected in a sliding manner, third springs are fixedly connected between the movable parts and the fixed part, and meshing teeth capable of being meshed with the rack are arranged on the movable parts; and a plate spring is connected between the frame and the handle.

4. A printing apparatus according to claim 3, wherein: the piston opening is connected with a hose, and the bottom end of the hose is located at the bottom end of the ink box.

5. A printing apparatus according to claim 4, wherein: the spray head is an atomizing spray head.