Nozzle ink scraping device and ink-jet printer

Abstract

The invention belongs to the field of printing equipment, and particularly relates to a nozzle ink scraping device and an ink-jet printer, the nozzle ink scraping device controls an ink scraping mechanism to move by starting a double-shaft motor, and meanwhile, two abutting rods are alternately extruded through an arc-shaped abutting strip, so that two piston plates alternately slide along the interior of a driving box; therefore, the two containing cavities can be sequentially inflated and deflated, the two ink scraping strips can alternately move up and down, then the two ink scraping strips alternately scrape ink, and the service life is longer compared with ink scraping of a single ink scraping strip.

Description

Technical Field

[0001] The present application relates to the technical field of printing equipment, and in particular to a nozzle ink scraping device and an inkjet printer. Background Art

[0002] When an inkjet printer is printing, some ink droplets will remain on the nozzle surface. When these ink droplets accumulate, they will drip under the action of gravity, or be splashed out during the next print, affecting the quality of the printed product.

[0003] Patent Publication No. (CN201784248U) discloses an ink scraping device for an inkjet printer nozzle. It includes a support frame; a first screw and a second screw that are rotatably fixed on the frame at both ends and are parallel to each other; a first pulley fixed on the first screw; a second pulley fixed on the second screw and synchronized with the first pulley; a scraping plate with threaded holes matching the first screw and the second screw at both ends, and connected to the first screw and the second screw through two threaded holes; an ink scraping strip disposed on the scraping plate for scraping ink droplets on the inkjet printer nozzle; a power device connected to the first screw and the second screw through a transmission belt and used to drive the first screw and the second screw to rotate. The ink scraping device for the inkjet printer nozzle provided in the embodiment of the application has a simple structure, occupies a small space, is easy to install in the inkjet printer, and is easy to operate, and can effectively clean the excess ink droplets on the nozzle orifice surface of the nozzle.

[0004] In the above technology, the single transmission bar is easily worn and damaged during long-term use, and the ink is scraped by a single scraper bar, which is also easy to wear and inconvenient to collect the scraped ink, which needs to be improved. Summary of the invention

[0005] The embodiments of the present application provide a nozzle ink scraping device and an inkjet printer to solve the above-mentioned problems.

[0006] To this end, according to one aspect of the present application, a nozzle scraping device is provided, comprising a mounting frame, wherein two parallel and spaced screws are rotatably arranged inside the mounting frame, two first transmission discs are respectively fixed to the rear ends of the two screws, the two first transmission discs on one screw are connected to the two first transmission discs on the other screw via two transmission belts, and two scraping mechanisms arranged side by side are commonly threadedly connected to the two screws; The ink scraping mechanism comprises a movable seat, two ends of which are respectively screwed to the two screw rods, a receiving cavity is provided on the top of the movable seat, a piston bar is connected to the inside of the receiving cavity for sliding up and down, an ink scraping bar is fixedly connected to the top of the piston bar, and a plurality of first springs are connected between the bottom of the piston bar and the bottom of the receiving cavity; A driving mechanism is fixed at the rear end of the installation frame, and the driving mechanism includes a driving box, and a dual-axis motor is fixed on one side of the driving box close to the installation frame, and one end of the output shaft of the dual-axis motor passes through the interior of the installation frame and is fixed with two second transmission discs, and the two second transmission discs are located on the inner sides of the two transmission belts and are respectively connected to the two transmission belts in a one-to-one corresponding manner; A cam is fixed to one end of the output shaft of the dual-axis motor located in the driving box, and piston plates are slidably arranged in the driving box and on both the left and right sides of the dual-axis motor, a plurality of second springs are fixedly connected between the relative outer sides of the two piston plates and the driving box, abutment rods are fixedly connected to the relative inner sides of the two piston plates, and the relative ends of the two abutment rods abut against the outer side wall of the cam, and the left and right ends of the driving box are respectively connected to the accommodating chambers in the two ink scraping mechanisms through two air pipes; A plurality of toggle blocks are evenly fixed on the outer side of the first transmission disc along the circumferential direction, a plurality of toggle openings are arranged at intervals on the inner side of the transmission belt along the transmission direction, the toggle blocks are meshed with the toggle openings, a plurality of receiving openings are evenly opened on the outer side of the second transmission disc along the circumferential direction, a wedge-shaped toggle block is slidably connected inside the receiving opening, a third spring is fixedly connected between the bottom of the wedge-shaped toggle block and the receiving opening, and the wedge-shaped surfaces of the wedge-shaped toggle blocks on the two second transmission discs face oppositely.

[0007] Optionally, a collecting mechanism is fixed to the right side of the installation frame, and the collecting mechanism includes a collecting box. The collecting box is a hollow rectangular structure with an opening on the right side. A plurality of suction pipes are fixedly connected between the collecting box and the installation frame. A cover plate is installed on the right side of the collecting box by means of bolts. A movable opening is provided on the left side of the collecting box above the plurality of suction pipes. An L-shaped shielding plate is slidably connected to the interior of the movable opening, and a fourth spring is fixedly connected between the L-shaped shielding plate and the cover plate.

[0008] Optionally, a trapezoidal pressure block is integrally formed at the left end of the L-shaped shielding plate.

[0009] Optionally, an air suction pump is fixed to the front side of the installation frame, and an input end of the air suction pump is connected to the interior of the collection box.

[0010] According to another aspect of the present application, an inkjet printer is provided, comprising an inkjet printer body and a nozzle ink scraping device as described above, wherein the nozzle ink scraping device is arranged on the inkjet printer body and is used to scrape residual ink on the nozzle.

[0011] The beneficial effects of the ink scraping device and inkjet printer provided by the present application are: By starting the double-axis motor to control the movement of the ink scraping mechanism, the two abutment rods are alternately squeezed by the arc-shaped abutment strip, so that the two piston plates slide alternately along the inside of the driving box, so that the air can be filled and discharged into the two accommodating chambers in turn, so that the two ink scraping strips can move up and down alternately, and then the two ink scraping strips scrape ink alternately, which has a longer service life than a single ink scraping strip; The outer side walls of the two second transmission discs are provided with wedge-shaped toggle blocks in opposite directions, so that the double-axis motor rotates. The wedge-shaped toggle block on the outer side wall of one second transmission disc can toggle the transmission belt for transmission through the toggle opening on the inner side of the transmission belt. After the wedge-shaped toggle block on the other second transmission disc contacts the toggle opening, it contracts and cannot toggle the transmission belt for transmission. Therefore, by controlling the forward and reverse rotation of the double-axis motor to control the ink scraping mechanism to move forward and backward, it will be driven by one of the two transmission belts respectively, so as to achieve the effect of synchronous rotation of the two screws, thereby avoiding the problem that a single transmission belt is easily damaged after long-term use. By starting the suction pump, the suction pipe sucks air and the debris is sucked into the collection box. As the scraping mechanism moves, the trapezoidal pressure blocks are squeezed in turn, so that the corresponding suction pipes open to intake air, thereby achieving the effect of scraping ink and collecting at the same time. By opening the cover, it is convenient to clean the waste ink. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] in: Figure 1 It is a schematic diagram of the overall structure of a nozzle scraping device shown in one embodiment of the present application; Figure 2 is a schematic cross-sectional structural diagram of an ink scraping mechanism of an ink scraping device of a nozzle shown in an embodiment of the present application; Figure 3 It is a structural schematic diagram of a first transmission plate of a nozzle scraping device shown in an embodiment of the present application; Figure 4 is a schematic diagram of a top view of a cross section of a driving mechanism of an ink scraping device of a nozzle shown in an embodiment of the present application; Figure 5 It is a schematic cross-sectional structural diagram of a second transmission plate of a nozzle scraping device shown in an embodiment of the present application; Figure 6 It is a schematic cross-sectional structure diagram of a collection mechanism of an ink scraping device of a nozzle shown in one embodiment of the present application.

[0014] Description of main component symbols: 1. Installation frame; 2. Screw rod; 3. First transmission disc; 4. Transmission belt; 5. Ink scraping mechanism; 6. Driving mechanism; 7. Collecting mechanism; 8. Toggle block; 9. Toggle port; 10. Suction pump; 501. Moving seat; 502. Accommodating chamber; 503. Piston bar; 504. Ink scraping bar; 505. First spring; 601. Driving box; 602. Air pipe; 603. Double-axis motor; 604. Second transmission disc; 605. Cam; 607. Piston plate; 608. Second spring; 609. Abutment rod; 610. Storage port; 611. Wedge-shaped toggle block; 612. Third spring; 701. Collecting box; 702. Suction pipe; 703. Cover plate; 704. Movable port; 705. L-shaped shielding plate; 706. Fourth spring; 707. Trapezoidal pressure block. DETAILED DESCRIPTION

[0015] In order to facilitate the understanding of the present application, the present application will be described more comprehensively with reference to the relevant drawings below. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many other different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0016] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0017] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do 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 therefore should not be understood as a limitation on the present application.

[0018] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0019] It should also be noted that, in the embodiments of the present application, the same figure mark is used to represent the same component or the same part. For the same parts in the embodiments of the present application, the figure may only mark one of the parts or components as an example. It should be understood that the figure mark also applies to other identical parts or components.

[0020] According to one aspect of the present application, Figure 1 and Figure 3 As shown, a nozzle ink scraping device for an inkjet printer is provided, comprising a mounting frame 1, wherein two parallel and spaced screw rods 2 are rotatably arranged inside the mounting frame 1, the screw rods 2 are oriented forward and backward, two first transmission discs 3 are fixed to the rear ends of the two screw rods 2 respectively, the two first transmission discs 3 on one screw rod 2 are connected to the two first transmission discs 3 on the other screw rod 2 through two transmission belts 4, two side-by-side arranged ink scraping mechanisms 5 are connected to the common threads on the upper parts of the two screw rods 2, a driving mechanism 6 is fixed to the rear end of the mounting frame 1, a collecting mechanism 7 is fixed to the right side of the mounting frame 1, a plurality of toggle blocks 8 are evenly fixedly connected to the outer side of the first transmission disc 3 along the circumferential direction, a plurality of toggle openings 9 are opened at equal intervals on the inner side of the transmission belt 4 along the transmission direction, and the toggle blocks 8 are meshed with the toggle openings 9.

[0021] The two screws 2 inside the mounting frame 1 can rotate together in the same direction under the drive of the first transmission disk 3 and the transmission belt 4, thereby driving the ink scraping mechanism 5 to move back and forth along the inner side of the mounting frame 1, thereby achieving the effect of scraping ink. The driving mechanism 6 is used to drive the screw 2 to rotate, and is also used to control the two ink scraping mechanisms 5 to be used alternately. The collecting mechanism 7 is used to collect the scraped ink debris. The transmission belt 4 and the first transmission disk 3 are synchronously driven through the set toggle block 8 and toggle mouth 9, and the transmission effect is better.

[0022] As Figure 1 , Figure 2 and Figure 4 As shown, the ink scraping mechanism 5 includes a movable seat 501, both ends of which are threadedly connected to the two screw rods 2 respectively, a receiving chamber 502 is opened on the top of the movable seat 501, a piston bar 503 is connected to the inside of the receiving chamber 502 for sliding up and down, an ink scraping strip 504 is fixedly connected to the top of the piston bar 503, and a plurality of first springs 505 are fixedly connected between the bottom of the piston bar 503 and the bottom of the receiving chamber 502.

[0023] The driving mechanism 6 includes a driving box 601, a dual-axis motor 603 is fixed on one side of the driving box 601 near the mounting frame 1, one end of the output shaft of the dual-axis motor 603 passes through the interior of the mounting frame 1 and is fixed with two second transmission plates 604, the two second transmission plates 604 are located on the inner sides of the two transmission belts 4 and are respectively connected to the two transmission belts 4 for transmission, the output shaft of the dual-axis motor 603 is located on a rear end of the driving box 601 and is fixed with a cam 605, two piston plates 607 are slidably provided inside the driving box 601 and on the left and right sides of the dual-axis motor 603, a plurality of second springs 608 are fixedly connected between the relative outer sides of the two piston plates 607 and the driving box 601, abutment rods 609 are fixedly connected to the relative inner sides of the two piston plates 607, and the relative ends of the two abutment rods 609 abut against the outer side wall of the cam 605; the left and right ends of the driving box 601 are respectively connected to the accommodating chambers 502 in the two ink scraping mechanisms 5 through two air pipes 602.

[0024] By starting the dual-axis motor 603, the second transmission disc 604 drives the transmission belt 4 to operate, and the transmission belt 4 drives the second transmission disc 604 on the two screw rods 2 to rotate, so that the two screw rods 2 can rotate synchronously, and then the ink scraping mechanism 5 can be controlled to move forward or backward. At the same time, the cam 605 will rotate together, and then the two abutment rods 609 can be alternately squeezed by the cam 605, so that the two piston plates 607 can slide left and right alternately along the inside of the drive box 601, so that the two accommodating chambers 502 can be filled and discharged in turn, so that the two ink scraping strips 504 can move up and down alternately, and then the two ink scraping strips 504 can scrape ink alternately, which has a longer service life than that of a single ink scraping strip 504.

[0025] like Figure 5 As shown, a plurality of receiving openings 610 are evenly arranged on the outer side of the second transmission disk 604 along the circumferential direction, a wedge-shaped toggle block 611 is slidably connected inside the receiving opening 610, a third spring 612 is fixedly connected between the bottom of the wedge-shaped toggle block 611 and the receiving opening 610, and the wedge-shaped surfaces of the wedge-shaped toggle blocks 611 on the two second transmission disks 604 face opposite directions.

[0026] By setting up two second transmission discs 604, the outer walls are installed with wedge-shaped toggle blocks 611 in opposite directions, so that when the dual-axis motor 603 rotates and drives the two second transmission discs 604 to rotate, the wedge-shaped toggle block 611 on the outer wall of one second transmission disc 604 can toggle the corresponding transmission belt 4 for transmission through the toggle opening 9 on the inner side of the transmission belt 4, and the wedge-shaped toggle block 611 on the other second transmission disc 604 contracts after contacting the corresponding transmission belt 4 toggle opening 9 and cannot toggle the transmission belt 4 for transmission, so that by controlling the forward and reverse rotation of the dual-axis motor 603 to control the ink scraping mechanism 5 to move forward and backward, the effect of screw 2 transmission will be achieved through one of the two transmission belts 4 respectively, avoiding the problem of single transmission belt 4 being easily damaged after long-term use.

[0027] like Figure 1 and Figure 6 As shown, the collecting mechanism 7 includes a collecting box 701, which is a hollow rectangular structure with an opening on the right side. A plurality of suction pipes 702 are fixedly connected between the collecting box 701 and the mounting frame 1. A cover plate 703 is installed on the right side of the collecting box 701 by disassembly of bolts. A movable opening 704 is provided on the left side of the collecting box 701 above the plurality of suction pipes 702. An L-shaped baffle plate 705 is slidably connected inside the movable opening 704. A fourth spring 706 is fixedly connected between the L-shaped baffle plate 705 and the cover plate 703. A trapezoidal pressure block 707 is integrally formed on the left end of the L-shaped baffle plate 705. An suction pump 10 is fixed on the front side of the mounting frame 1. The input end of the suction pump 10 is connected to the interior of the collecting box 701 for evacuating air from the collecting box 701.

[0028] By starting the suction pump 10, the suction pipe 702 is inhaled to suck the waste ink into the collection box 701, and as the ink scraping mechanism 5 moves, the trapezoidal pressure blocks 707 are squeezed in turn, so that the corresponding suction pipes 702 are opened to intake air, thereby achieving the effect of scraping ink and sucking at the same time. By opening the cover plate 703, it is convenient to regularly clean the collected waste ink.

[0029] It should be noted that the electrical components appearing in this article are all electrical components that exist in reality.

[0030] According to another aspect of the present application, an embodiment of the present application further provides an inkjet printer, comprising an inkjet printer body and a nozzle scraper device in the above embodiment, wherein the nozzle scraper device is disposed on the inkjet printer body and is used to scrape the residual ink on the nozzle. Since the inkjet printer adopts the above nozzle scraper device, it also has the advantages and benefits brought by the above nozzle scraper device, which will not be described in detail here.

[0031] It can be understood that the ink scraper device can be directly installed below the nozzle and move with the nozzle. In this installation mode, the hollow part of the installation frame 1 in the ink scraper device corresponds to the nozzle in the vertical direction, which does not affect the normal ink spraying of the nozzle to the paper below. When ink scraping is required, the ink scraper mechanism 5 moves back and forth from one end to the other end in the installation frame 1 to scrape the ink. In addition, the ink scraper device can also be fixedly installed on the side of the inkjet printer body. When the nozzle needs to be cleaned, it is moved to the top of the ink scraper device, and the residual ink on the nozzle is scraped off by the ink scraper device.

[0032] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0033] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A nozzle scraping device, comprising a mounting frame (1), characterized in that: Two parallel and spaced screw rods (2) are rotatably arranged inside the installation frame (1); two first transmission discs (3) are respectively fixed to the rear ends of the two screw rods (2); the two first transmission discs (3) on one screw rod (2) and the two first transmission discs (3) on the other screw rod (2) are connected to each other via two transmission belts (4); and two ink scraping mechanisms (5) arranged side by side are commonly threadedly connected to the two screw rods (2); The ink scraping mechanism (5) comprises a movable seat (501), the two ends of the movable seat (501) are respectively screwed to the two screw rods (2), a receiving chamber (502) is provided at the top of the movable seat (501), a piston bar (503) is slidably connected to the inside of the receiving chamber (502), an ink scraping bar (504) is fixedly connected to the top of the piston bar (503), and a plurality of first springs (505) are connected between the bottom of the piston bar (503) and the bottom of the receiving chamber (502); A driving mechanism (6) is fixed at the rear end of the installation frame (1), the driving mechanism (6) comprising a driving box (601), a dual-axis motor (603) is fixed on a side of the driving box (601) close to the installation frame (1), one end of the output shaft of the dual-axis motor (603) passes through the interior of the installation frame (1) and is fixed with two second transmission discs (604), the two second transmission discs (604) are located on the inner sides of the two transmission belts (4) and are respectively connected to the two transmission belts (4) in a one-to-one corresponding transmission manner; A cam (605) is fixed to one end of the output shaft of the dual-axis motor (603) located in the driving box (601); piston plates (607) are slidably arranged in the driving box (601) and on both left and right sides of the dual-axis motor (603); a plurality of second springs (608) are fixedly connected between the relative outer sides of the two piston plates (607) and the driving box (601); abutment rods (609) are fixedly connected to the relative inner sides of the two piston plates (607); the relative ends of the two abutment rods (609) abut against the outer side wall of the cam (605); and the left and right ends of the driving box (601) are respectively connected to the accommodating chambers (502) in the two ink scraping mechanisms (5) through two air pipes (602); A plurality of toggle blocks (8) are evenly fixed along the circumferential direction on the outer side of the first transmission disc (3); a plurality of toggle openings (9) are arranged at intervals along the transmission direction on the inner side of the transmission belt (4); the toggle blocks (8) are meshed with the toggle openings (9); a plurality of receiving openings (610) are evenly opened along the circumferential direction on the outer side of the second transmission disc (604); a wedge-shaped toggle block (611) is slidably connected inside the receiving opening (610); a third spring (612) is fixedly connected between the bottom of the wedge-shaped toggle block (611) and the receiving opening (610); and the wedge-shaped surfaces of the wedge-shaped toggle blocks (611) on the two second transmission discs (604) face opposite directions.

2. The ink scraping device according to claim 1, characterized in that: A collecting mechanism (7) is fixed to the right side of the installation frame (1), and the collecting mechanism (7) comprises a collecting box (701). The collecting box (701) is a hollow rectangular parallelepiped structure with an opening on the right side. A plurality of air intake pipes (702) are fixedly connected between the collecting box (701) and the installation frame (1). A cover plate (703) is installed on the right side of the collecting box (701) by means of bolts. A movable opening (704) is provided on the left side of the collecting box (701) above the plurality of air intake pipes (702). An L-shaped shielding plate (705) is slidably connected to the inside of the movable opening (704), and a fourth spring (706) is fixedly connected between the L-shaped shielding plate (705) and the cover plate (703).

3. The ink scraping device according to claim 2, characterized in that: A trapezoidal pressure block (707) is integrally formed at the left end of the L-shaped shielding plate (705).

4. The ink scraping device according to claim 2, characterized in that: An air suction pump (10) is fixed on the front side of the installation frame (1), and an input end of the air suction pump (10) is connected to the interior of the collection box (701).

5. An inkjet printer, characterized in that: It comprises an inkjet printer body and a nozzle ink scraping device as described in any one of claims 1 to 4, wherein the nozzle ink scraping device is arranged on the inkjet printer body and is used to scrape residual ink on the nozzle.

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