Ink pressure control device for ink supply of UV ink-jet printer

Abstract

The utility model discloses an ink pressure control device for ink supply of a UV ink-jet printer, which belongs to the technical field of UV ink-jet printers and comprises an ink box, and an ink supply cavity, an ink outlet cavity and a middle cavity are respectively arranged in the ink box. According to the utility model, ink in the ink outlet cavity can be conveyed into the round frame through the liquid outlet, and the filter screen can divide large bubbles in the ink into countless small bubbles, so that the air gathering effect in the ink is reduced, the influence of the bubbles on the ink jet quality is reduced, and the clear and uniform code spraying is ensured; when the pressure of the ink liquid at the top of the first piston is larger than the acting force of a spring, a blocking piece compresses the spring at the moment, and the ink at the top of the first piston enters the bottom of an ink outlet cavity through a through hole; and the ink liquid level on the bottom side in the ink outlet cavity can be supplemented in time.

Description

TECHNICAL FIELD

[0001] The utility model belongs to UV code spraying machine technical field especially relates to a kind of ink pressure control device for UV code spraying machine ink supply. BACKGROUND

[0002] Code spraying machine is a kind of equipment that is marked on product using non-contact mode by software control, and UV code spraying machine is a kind of equipment that is marked using ultraviolet curing technology, and the code spraying effect of UV code spraying machine is clear, and dry and fast, which can mark on the surface of various materials. To ensure the processing quality of UV code spraying machine, ink pressure control device is needed to control the ink supply.

[0003] As Chinese patent document (CN220681970U) a kind of ink pressure control device for UV code spraying machine ink supply, including base, the upper surface of the base is fixedly connected with UV code spraying machine body, the upper surface of the base is fixedly connected with ink storage tank, the inner wall of the ink storage tank is slidably connected with push plate, the bottom of the push plate is fixedly connected with sealing plate, the bottom of the sealing plate is fixedly connected with pressure sensor, the pressure inside the device can be detected by being provided with pressure sensor, the servo motor can be controlled to work when the pressure is lower than set value by controller, so that servo motor can be connected by screw thread rod and screw thread cylinder Screw thread connection can push push plate to move, and then push plate cooperates sealing plate to extrude ink, ensure the film pressure of UV code spraying machine body ink supply, solve the problem that stable pressure mechanism is not set inside, it is difficult to maintain the pressure inside ink supply mechanism, cause unstable ink supply when ink is discharged due to low pressure, but the continuous ink supply effect of the device is poor in use process, need to stop machine to replace ink storage tank, cause the use efficiency of device is affected, therefore, need to be improved. UTILITY MODEL CONTENTS

[0004] The utility model aims at: in order to solve the problem that the continuous ink supply effect is poor in use process of prior art, need to stop machine to replace ink storage tank, cause the use efficiency of device is affected, and a kind of ink pressure control device for UV code spraying machine ink supply is provided.

[0005] In order to achieve the above object, the utility model adopts the following technical scheme:

[0006] An ink pressure control device for UV code spraying machine ink supply, comprising a ink cartridge, the ink cartridge is provided with an ink supply cavity, an ink outlet cavity and an intermediate cavity, the inside bottom of the ink outlet cavity is provided with a mixing assembly, and the top of the mixing assembly is provided with a compensation assembly.

[0007] The compensation assembly comprises a lead screw and a sliding groove, a threaded sleeve is threadedly connected to the outer circumferential side of the lead screw, the bottom of the threaded sleeve extends to the bottom of the sliding groove and is fixedly connected with a first piston, the first piston is slidingly sealed in the ink outlet cavity, a plurality of connecting rods are fixedly connected to the bottom of both sides of the first piston, a connecting seat is fixedly connected to the bottom end of the connecting rod, a spring is sleeved on the outer circumferential side of the connecting rod, the bottom of the spring is fixedly connected with the top of the connecting seat, a baffle is fixedly connected to the top of the spring, the baffle is slidingly connected to the outer circumferential side of the connecting rod, a plurality of through holes are arranged in the top of the baffle in a circumferential array, and the through holes are located in the first piston.

[0008] As a further description of the above technical solution:

[0009] The sliding groove is located at the top side in the ink cartridge, and the sliding groove is in communication with the ink outlet cavity, the threaded sleeve is rectangular, and the threaded sleeve is slidingly connected in the sliding groove.

[0010] As a further description of the above technical solution:

[0011] The lead screw is rotationally connected in the ink cartridge, and the top end of the lead screw extends to the outside of the ink cartridge and is fixedly connected with a driving motor, and the driving motor is fixedly connected to the top side outside the ink cartridge through a support seat.

[0012] As a further description of the above technical solution:

[0013] The top side of the first piston is provided with a liquid suction pipe, the liquid suction pipe is in communication with the ink outlet cavity, and the other end of the liquid suction pipe is in communication with an external ink storage box, and a one-way valve is arranged on the liquid suction pipe.

[0014] As a further description of the above technical solution:

[0015] The second piston is slidingly sealed in the top side of the ink supply cavity, the gas cylinder is fixedly connected to one side of the top of the ink cartridge, the limiting rods are arranged on both sides of the gas cylinder, and the output shafts of the gas cylinder and the limiting rods extend to the inside of the ink cartridge and are fixedly connected with the top of the second piston.

[0016] As a further description of the above technical solution:

[0017] The mixing assembly comprises a main pipe, one end of the main pipe is fixedly connected with the inner wall of the ink cartridge, the other end of the main pipe is communicated with a liquid delivery pipe, the other end of the liquid delivery pipe is communicated with the ink supply cavity, and a one-way valve is arranged on the liquid delivery pipe.

[0018] As a further description of the above technical solution:

[0019] The main pipe side is communicated with a plurality of branch pipes, the inside of the branch pipe is communicated with a plurality of one-way liquid outlets on both sides, and the branch pipe side is provided with a round frame.

[0020] As a further description of the above technical solution:

[0021] The round frame is internally provided with a filter screen, the side, away from the ink box, of the round frame is communicated with an ink outlet pipe, and the other end of the ink outlet pipe is communicated with a nozzle of an external UV ink jet printer.

[0022] As a further description of the above technical solution:

[0023] 1、The compensation assembly is arranged, the ink in the ink outlet cavity is conveyed to the inside of the round frame through the liquid outlet, the filter screen divides the large air bubbles in the ink into numerous small air bubbles, the air gathering effect in the ink is reduced, the influence of the air bubbles on the ink jet quality is reduced, the code jetting is clear and uniform, when the ink in the ink supply cavity is replenished to the appropriate position, the driving motor drives the lead screw to reverse rotation, the threaded sleeve drives the first piston to move upwards, when the ink liquid pressure at the top of the first piston is greater than the force of the spring, the baffle compresses the spring at this time, the ink at the top of the first piston enters the bottom of the ink outlet cavity through the through hole, the ink liquid level on the bottom side of the inside of the ink outlet cavity is timely replenished, the internal pressure change of the device is reduced while the continuous ink supply of the device is ensured, and the overall use performance of the device is further improved.

[0024] 2、The mixing assembly is arranged, the cylinder drives the second piston to move downwards, the ink at the bottom of the second piston is conveyed to the bottom side of the inside of the ink outlet cavity through the liquid conveying pipe, the main pipe, the branch pipe and the one-way liquid outlet, the ink flow effect and the stirring effect of the bottom side of the inside of the ink outlet cavity are increased, the ink in the inside of the ink outlet cavity is prevented from being deposited, and the processing quality of the external UV ink jet printer is assisted to improve. DETAILED DESCRIPTION

[0025] Figure 1 It is an overall three-dimensional structure schematic view of the utility model;

[0026] Figure 2 It is an internal three-dimensional structure schematic view of the ink box in the utility model;

[0027] Figure 3 It is an A place local amplification structure schematic view of the utility model; Figure 2

[0028] Figure 4 It is a B place local amplification structure schematic view of the utility model; Figure 2 ​​

[0029] Legend:

[0030] 1 ink cartridge; 2 ink supply chamber; 3 ink outlet chamber; 4 compensation assembly; 401 drive motor; 402 screw rod; 403 threaded sleeve; 404 sliding groove; 405 first piston; 406 connecting rod; 407 connecting seat; 408 spring; 409 baffle; 410 through hole; 411 suction tube; 5 mixing assembly; 501 main pipe; 502 branch pipe; 503 one-way liquid outlet; 504 liquid outlet; 505 round frame; 506 filter screen; 6 ink outlet pipe; 7 air cylinder; 8 second piston; 9 limiting rod; 10 liquid delivery pipe. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] Please refer to Figures 1-4 The present application provides a technical solution: an ink pressure control device for a UV inkjet printer, comprising an ink cartridge 1, the ink cartridge 1 is provided with an ink supply chamber 2, an ink outlet chamber 3 and an intermediate cavity, the ink outlet chamber 3 is provided with a mixing assembly 5 on the bottom, and the mixing assembly 5 is provided with a compensation assembly 4 on the top.

[0033] The compensation assembly 4 comprises a lead screw 402 and a sliding groove 404, the outer circumferential side of the lead screw 402 is threadedly connected with a threaded sleeve 403, the bottom of the threaded sleeve 403 extends to the bottom of the sliding groove 404 and is fixedly connected with a first piston 405, the first piston 405 is slidingly sealed inside the ink outlet cavity 3, the bottom of the first piston 405 is fixedly connected with a plurality of connecting rods 406 on both sides, the bottom end of the connecting rod 406 is fixedly connected with a connecting seat 407, the outer circumferential side of the connecting rod 406 is sleeved with a spring 408, the bottom of the spring 408 is fixedly connected with the top of the connecting seat 407, the top of the spring 408 is fixedly connected with a baffle 409, the baffle 409 is slidingly connected on the outer circumferential side of the connecting rod 406, a plurality of through holes 410 are circumferentially arranged on the top of the baffle 409, the through holes 410 are located inside the first piston 405, the sliding groove 404 is located on the top side inside the ink cartridge 1, and the sliding groove 404 is in communication with the ink outlet cavity 3, the threaded sleeve 403 is in the shape of a rectangle, the threaded sleeve 403 is slidingly connected inside the sliding groove 404, the lead screw 402 is rotationally connected inside the ink cartridge 1, the top end of the lead screw 402 extends to the outside of the ink cartridge 1 and is fixedly connected with a driving motor 401, the driving motor 401 is fixedly connected to the top side outside the ink cartridge 1 through a support seat, a liquid suction pipe 411 is arranged on one side of the top of the first piston 405, the liquid suction pipe 411 is in communication with the ink outlet cavity 3, and the other end of the liquid suction pipe 411 is in communication with an external ink storage box, a one-way valve is arranged on the liquid suction pipe 411, a second piston 8 is slidingly sealed on the top side inside the ink supply cavity 2, a gas cylinder 7 is fixedly connected to one side of the top of the ink cartridge 1, limit rods 9 are arranged on both sides of the gas cylinder 7, and one end of the output shafts of the gas cylinder 7 and the limit rods 9 extends to the inside of the ink cartridge 1 and is fixedly connected with the top of the second piston 8.

[0034] Specifically, the pressure sensor and the liquid level sensor are first installed inside the ink supply cavity 2 and at the bottom of the second piston 8. The ink inside the ink outlet cavity 3 is delivered to the inside of the circular frame 505 through the liquid outlet 504. The filter screen 506 divides the large air bubbles in the ink into numerous small air bubbles, thereby reducing the effect of air accumulation in the ink and reducing the influence of air bubbles on the inkjet quality, ensuring clear and uniform code printing. When the ink inside the ink supply cavity 2 is lower than the set position of the liquid level sensor, the air cylinder 7 is reversed to move, thereby supplementing the ink inside the ink supply cavity 2. At the same time, the driving motor 401 is started to drive the lead screw 402 to rotate, and the power is transmitted to the threaded sleeve 403 through the linkage effect between the lead screw 402 and the threaded sleeve 403, so that the threaded sleeve 403 drives the first piston 405 to move downward to apply pressure to the ink inside the ink outlet cavity 3, thereby ensuring the continuous ink supply control effect of the device. When the ink inside the ink supply cavity 2 is replenished to the appropriate position, the driving motor 401 drives the lead screw 402 to rotate in the opposite direction, so that the threaded sleeve 403 drives the first piston 405 to move upward. As the first piston 405 continuously moves upward, when the liquid pressure of the ink at the top of the first piston 405 is greater than the force of the spring 408, the baffle 409 compresses the spring 408, and the ink at the top of the first piston 405 enters the bottom of the ink outlet cavity 3 through the through hole 410 to supplement the ink level on the bottom side of the ink outlet cavity 3 in time. While ensuring the continuous ink supply of the device, the pressure change inside the device is reduced, and the overall use performance of the device is further improved.

[0035] The mixing assembly 5 includes a main pipe 501, one end of the main pipe 501 is fixedly connected with the inner wall of the ink cartridge 1, the other end of the main pipe 501 is communicated with the liquid delivery pipe 10, the other end of the liquid delivery pipe 10 is communicated with the ink supply cavity 2, a one-way valve is arranged on the liquid delivery pipe 10, a plurality of branch pipes 502 are communicated with one side of the main pipe 501, a plurality of one-way liquid outlets 503 are communicated with the inside of the branch pipes 502 on both sides, a circular frame 505 is arranged on one side of the branch pipe 502, one side of the circular frame 505 is fixedly connected with the outer wall of the ink cartridge 1, and the connection part between the circular frame 505 and the ink cartridge 1 is provided with a liquid outlet 504, a filter screen 506 is arranged in the circular frame 505, and an ink outlet pipe 6 is communicated with one side of the circular frame 505 away from the ink cartridge 1, the other end of the ink outlet pipe 6 is communicated with the nozzle of the external UV inkjet printer.

[0036] Specifically, the air cylinder 7 is started to drive the second piston 8 to move downward, the ink at the bottom of the second piston 8 is delivered to the inside of the main pipe 501 through the liquid delivery pipe 10, and then delivered to the bottom side of the ink outlet cavity 3 through the branch pipe 502 and the one-way liquid outlet 503, thereby increasing the flow effect and stirring effect of the ink on the bottom side of the ink outlet cavity 3, preventing the ink inside the ink outlet cavity 3 from settling, and assisting in improving the processing quality of the external UV inkjet printer.

[0037] Working principle: in use, first install the pressure sensor and liquid level sensor to the inside of the ink supply cavity 2, and at the bottom of the second piston 8, start the air cylinder 7, drive the second piston 8 to move down through the air cylinder 7, deliver the ink at the bottom of the second piston 8 to the inside of the main pipe 501 through the liquid delivery pipe 10, then deliver to the inside of the ink outlet cavity 3 through the branch pipe 502 and the one-way liquid outlet 503, increase the ink flow effect and stirring effect of the inside bottom of the ink outlet cavity 3, the ink in the ink outlet cavity 3 will be delivered to the inside of the circular frame 505 through the liquid outlet 504, the filter screen 506 will divide the large bubbles in the ink into countless small bubbles, so as to reduce the influence of bubbles on the quality of inkjet, when the ink in the ink supply cavity 2 is lower than the set position of the liquid level sensor, at this time, the air cylinder 7 is reversely moved, that is, the ink in the ink supply cavity 2 is replenished, at the same time, start the driving motor 401, drive the lead screw 402 to rotate through the driving motor 401, utilize the linkage effect between the lead screw 402 and the threaded sleeve 403 to transmit power to the threaded sleeve 403, make the threaded sleeve 403 drive the first piston 405 to move down, apply pressure to the ink in the ink outlet cavity 3, so as to ensure the continuous ink supply control effect of the device, when the ink in the ink supply cavity 2 is replenished to the appropriate position, make the driving motor 401 drive the lead screw 402 to rotate reversely, make the threaded sleeve 403 drive the first piston 405 to move up, with the continuous upward movement of the first piston 405, when the ink liquid pressure at the top of the first piston 405 is greater than the force of the spring 408, at this time, the baffle 409 will compress the spring 408, the ink at the top of the first piston 405 will enter the bottom of the ink outlet cavity 3 through the through hole 410, so as to replenish the ink liquid level of the inside bottom of the ink outlet cavity 3 in time, convenient to use.

[0038] The above merely describes the preferred embodiments of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. An ink pressure control device for ink supply in a UV inkjet printer, comprising an ink cartridge (1), characterized in that: The ink cartridge (1) is provided with an ink supply chamber (2), an ink outlet chamber (3) and an intermediate cavity. A mixing component (5) is provided on the bottom side of the ink outlet chamber (3), and a compensation component (4) is provided on the top of the mixing component (5). The compensation component (4) includes a lead screw (402) and a sliding groove (404). A threaded sleeve (403) is threadedly connected to the outer periphery of the lead screw (402). The bottom of the threaded sleeve (403) extends to the bottom of the sliding groove (404) and is fixedly connected to a first piston (405). The first piston (405) is slidably sealed inside the ink outlet chamber (3). Multiple connecting rods (406) are fixedly connected to both sides of the bottom of the first piston (405). The bottom ends of the connecting rods (406) are fixedly connected to the first piston (405). A connecting seat (407) is fixedly connected to the connecting rod (406). A spring (408) is sleeved on the outer periphery of the connecting rod (406). The bottom of the spring (408) is fixedly connected to the top of the connecting seat (407). A baffle (409) is fixedly connected to the top of the spring (408). The baffle (409) is slidably connected to the outer periphery of the connecting rod (406). A plurality of through holes (410) are distributed in a circular array on the top of the baffle (409). The through holes (410) are located inside the first piston (405).

2. The ink pressure control device for ink supply in a UV inkjet printer according to claim 1, characterized in that: The sliding groove (404) is located on the top side inside the ink cartridge (1), and the sliding groove (404) is connected to the ink outlet cavity (3). The threaded sleeve (403) is rectangular and is slidably connected inside the sliding groove (404).

3. The ink pressure control device for ink supply in a UV inkjet printer according to claim 2, characterized in that: The lead screw (402) is rotatably connected inside the ink cartridge (1), and the top of the lead screw (402) extends to the outside of the ink cartridge (1) and is fixedly connected to a drive motor (401). The drive motor (401) is fixedly connected to the top side of the outside of the ink cartridge (1) through a support base.

4. The ink pressure control device for ink supply in a UV inkjet printer according to claim 3, characterized in that: The first piston (405) has a liquid extraction tube (411) on one side of its top. The liquid extraction tube (411) is connected to the ink outlet chamber (3), and the other end of the liquid extraction tube (411) is connected to the external ink storage box. A one-way valve is provided on the liquid extraction tube (411).

5. The ink pressure control device for ink supply in a UV inkjet printer according to claim 4, characterized in that: The top side of the ink supply chamber (2) is slidably sealed with a second piston (8). A cylinder (7) is fixedly connected to one side of the top of the ink cartridge (1). Limit rods (9) are provided on both sides of the cylinder (7). One end of the output shaft of the cylinder (7) and the limit rods (9) extends into the ink cartridge (1) and is fixedly connected to the top of the second piston (8).

6. The ink pressure control device for ink supply in a UV inkjet printer according to claim 5, characterized in that: The mixing component (5) includes a main pipe (501), one end of which is fixedly connected to the inner wall of the ink cartridge (1), and the other end of which is connected to an infusion tube (10). The other end of the infusion tube (10) is connected to the ink supply chamber (2), and a one-way valve is provided on the infusion tube (10).

7. The ink pressure control device for ink supply in a UV inkjet printer according to claim 6, characterized in that: The main pipe (501) is connected to multiple branch pipes (502) on one side. Multiple one-way liquid outlets (503) are connected to both sides of the inside of the branch pipe (502). A circular frame (505) is provided on one side of the branch pipe (502). One side of the circular frame (505) is fixedly connected to the outer wall of the ink cartridge (1), and a liquid outlet (504) is provided at the connection between the circular frame (505) and the ink cartridge (1).

8. The ink pressure control device for ink supply in a UV inkjet printer according to claim 7, characterized in that: The circular frame (505) is equipped with a filter screen (506). The side of the circular frame (505) away from the ink cartridge (1) is connected to an ink outlet pipe (6). The other end of the ink outlet pipe (6) is connected to the printhead of an external UV inkjet printer.

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