Digital ink-jet printing device

Abstract

The invention discloses a digital ink-jet printing device which comprises a shell, a conveying belt arranged in the shell and used for conveying printed materials, a moving shell arranged in the shell and moving front and back in the shell, and a nozzle arranged in the moving shell and moving left and right in the moving shell. A first driving mechanism for driving the nozzle to move left and right is arranged in the movable shell; during printing, the conveying belt continuously conveys a printing stock forwards, the first driving mechanism drives the nozzle to continuously move left and right, and when the nozzle moves left and right for printing, the moving shell can move forwards by a small distance along with conveying of the conveying belt, and after one line of printing is completed, rapid resetting and action repeating are conducted, and printing operation is completed. The printing stock does not need to be paused for printing, the printing stock does not move due to pause during printing, printing cluster dislocation is prevented, and the printing quality is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of printing, in particular to a digital inkjet printing device. Background Art

[0002] Inkjet printing is a contactless, pressureless, plateless digital printing technology that can achieve variable image printing. The principle of inkjet printing is that a printer composed of many nozzles in a dot matrix structure, digitally prints image data, and directly controls the nozzles through a computer. The extremely fine nozzles spray ink droplets onto the surface of the substrate, directly forming an image on the surface of the substrate to form a printed product.

[0003] When the nozzle of an existing inkjet printer moves to spray ink, the substrate needs to be paused for ink spraying. If the substrate is displaced when it is paused, the printed pattern will be misaligned, affecting the printing quality. Summary of the invention

[0004] The object of the present invention is to solve the above-mentioned problem and provide a digital inkjet printing device, which does not require the substrate to be paused during printing, thereby ensuring the quality of the printed pattern.

[0005] The technical solution adopted by the present invention to solve the technical problem is:

[0006] A digital inkjet printing device, comprising a housing, a conveyor belt arranged in the housing for conveying a substrate, a movable housing arranged in the housing and moving forward and backward in the housing, a nozzle arranged in the movable housing and moving left and right in the movable housing, and a first driving mechanism driving the nozzle to move left and right is arranged in the movable housing;

[0007] The first driving mechanism includes a first driving shaft disposed on the side wall of the moving shell and reciprocating in the moving shell, a rotating shaft disposed on the nozzle, and a first gear for driving the nozzle to move left and right is disposed on the rotating shaft. The first driving shaft is connected to the rotating shaft through a connecting mechanism. When the first driving shaft rotates, the moving shell continuously moves forward and backward under the action of the linkage mechanism.

[0008] The linkage mechanism includes a driving disk arranged at the rear end of the first driving shaft, a protrusion arranged on the rear side of the driving disk, and a second driving wheel arranged on the inner wall of the shell and matched with the rear side of the driving disk. The rear end of the moving shell is connected to the rear end of the shell through a first tension spring.

[0009] Furthermore, the two sides of the movable shell are slidably connected to the inner wall of the shell body through guide rail sliders.

[0010] Furthermore, a crossbeam is provided in the movable shell, the nozzle is connected to the crossbeam via a guide rail slider, and a first rack meshing with the first gear is provided on the crossbeam.

[0011] Furthermore, a support plate is provided on the side of the movable shell, a turntable is provided on the support plate, a driving rod is provided on the side wall of the movable shell, passing through the side wall of the movable shell and slidingly connected to the movable shell, a second gear is provided on the first driving shaft, a second rack meshing with the second gear is provided at the bottom of the driving rod, an elongated hole is provided at one end of the outer side of the driving rod, and a first driving wheel matching with the elongated hole is provided at an eccentric position of the turntable.

[0012] Furthermore, an opening is provided on a side surface of the shell, and the support plate passes through the opening.

[0013] Furthermore, a first motor for driving the turntable to rotate is disposed on the support plate.

[0014] Furthermore, the connecting mechanism includes: a No. 1 connecting rod, a No. 2 connecting rod, a No. 1 belt, and a No. 2 belt. The No. 1 connecting rod is hinged to the No. 2 connecting rod, and a rotatable axle pin is provided at the hinge between the two. The end of the No. 1 connecting rod away from the No. 2 connecting rod is rotatably connected to the first drive shaft, and the end of the No. 2 connecting rod away from the No. 1 connecting rod is rotatably connected to the rotating shaft. The first drive shaft is connected to the rotating shaft via the No. 1 belt and the No. 2 belt.

[0015] Furthermore, an output mechanism for outputting printed substrates is provided at the front end of the conveyor belt.

[0016] Furthermore, the output mechanism includes a base, a rotating frame rotatably connected between the front end and the base, and a plurality of conveying rollers arranged in the rotating frame. The base is provided with a second driving mechanism for driving the rotating frame to swing.

[0017] Furthermore, the second driving mechanism includes a V-shaped frame symmetrically arranged on the base, the V-shaped frame is rotatably connected to the base at a corner position, a supporting wheel cooperating with the rotating frame is provided at the upper end of the V-shaped frame, the front end of the V-shaped frame is connected to the base via a second tension spring, the two V-shaped frames are connected via a cross bar, a second driving shaft is provided on the base, a cam cooperating with the cross bar is provided on the second driving shaft, and a second motor that drives the second driving shaft to rotate is provided on the base.

[0018] The beneficial effects of the present invention are:

[0019] 1. The present invention includes a shell, a conveyor belt arranged in the shell for conveying a substrate, a movable shell arranged in the shell and moving forward and backward in the shell, a nozzle arranged in the movable shell and moving left and right in the movable shell, and a first driving mechanism driving the nozzle to move left and right is arranged in the movable shell; during printing, the conveyor belt continuously conveys the substrate forward, the first driving mechanism drives the nozzle to continuously move left and right, and when the nozzle moves left and right for printing, the movable shell will move forward a short distance with the conveyor belt, and quickly reset after a line of printing is completed, repeat the action, and complete the printing operation. The substrate does not need to be paused for printing, that is, the substrate will not be displaced due to the pause during printing, so as to prevent the printed mass from being misplaced and ensure the printing quality.

[0020] 2. The linkage mechanism of the present invention includes a driving disk arranged at the rear end of the first driving shaft, a protrusion arranged on the rear side of the driving disk, and a second driving wheel arranged on the inner wall of the shell and matched with the rear side of the driving disk. The rear end of the movable shell is connected to the rear end of the shell through a first tension spring. When the driving disk rotates, when the protrusion cooperates with the second driving wheel, the movable shell overcomes the elastic force of the first tension spring and moves forward a short distance. After the protrusion is separated from the second driving wheel, the movable shell moves backward and resets under the action of the elastic force of the first tension spring. Through mechanical linkage, there is no need for a separate driving device to drive the movable shell to move, which has low cost, compact beat and good reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention 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, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 The structure of the present invention is shown in FIG. Figure 1 ;

[0023] Figure 2 It is the front view of the present invention;

[0024] Figure 3 The structure of the present invention is shown in FIG. Figure 2 ;

[0025] Figure 4 The movable shell structure of the present invention is shown in FIG. Figure 1 ;

[0026] Figure 5 Schematic diagram of the movable shell structure of the present invention Figure 2 ;

[0027] Figure 6 The output mechanism structure of the present invention is shown in FIG. Figure 1 ;

[0028] Figure 7 The output mechanism structure of the present invention is shown in FIG. Figure 2 ;

[0029] Figure 8 It is the right view of the output mechanism of the present invention.

[0030] In the figure: shell 1, conveyor belt 2, moving shell 3, nozzle 4, cross beam 5, first drive shaft 6, rotating shaft 7, first gear 8, support plate 9, turntable 10, drive rod 11, long hole 12, first drive wheel 13, second gear 14, first rack 15, opening 16, first motor 17, No. 1 connecting rod 18, No. 2 connecting rod 19, No. 1 belt 20, No. 2 belt 21, drive disc 22, protrusion 23, second drive wheel 24, first tension spring 25, base 26, rotating frame 27, conveyor roller 28, V-shaped frame 29, support wheel 30, second tension spring 31, cross bar 32, second drive shaft 33, cam 34, second motor 35. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0032] like Figure 1 and Figure 2 As shown, a digital inkjet printing device includes a housing 1, a conveyor belt 2 arranged in the housing 1 for conveying a substrate forward, a movable housing 3 arranged in the housing 1 and moving forward and backward in the housing 1, and a nozzle 4 arranged in the movable housing 3 and moving left and right in the movable housing 3. The conveyor belt 2 is composed of a plurality of conveyor belts arranged in parallel, and a first driving mechanism driving the nozzle 4 to move left and right is arranged in the movable housing 3. During printing, the conveyor belt 2 continuously conveys the substrate forward, and the first driving mechanism drives the nozzle 4 to continuously move left and right. When the nozzle 4 moves left and right for printing, the movable housing 3 moves forward a short distance with the conveyor belt 2, and quickly resets after a line of printing is completed, repeats the action, and completes the printing operation. The substrate does not need to be paused for printing, that is, the substrate will not be displaced due to the pause during printing, so as to prevent the dislocation of the printed mass and ensure the printing quality.

[0033] like Figure 4As shown, the first driving mechanism includes a first driving shaft 6 arranged on the side wall of the moving shell 3 and reciprocating in the moving shell 3, a rotating shaft 7 arranged on the nozzle 4, and a first gear 8 for driving the nozzle 4 to move left and right is provided on the rotating shaft 7. The first driving shaft 6 is connected to the rotating shaft 7 through a connecting mechanism, and the first driving shaft 6 is rotatably connected to the side wall of the moving shell 3 through a bearing. When the first driving shaft 6 rotates, the moving shell 3 continuously moves back and forth under the action of the linkage mechanism; when the first driving shaft 6 rotates, the rotating shaft 7 continuously reciprocates under the action of the linkage mechanism, and the nozzle 4 continuously moves left and right under the action of the first gear 8 and the rack on the crossbeam.

[0034] like Figure 3 and Figure 5 As shown, the linkage mechanism includes a driving disc 22 arranged at the rear end of the first driving shaft 6, a protrusion 23 arranged on the rear side of the driving disc 22, and a second driving wheel 24 arranged on the inner wall of the shell 1 and matched with the rear side of the driving disc 22. The rear end of the movable shell 3 is connected to the rear end of the shell 1 through a first tension spring 25. When the driving disc 22 rotates, when the protrusion 23 cooperates with the second driving wheel 24, the movable shell 3 overcomes the elastic force of the first tension spring 25 and moves forward a short distance. After the protrusion 23 is separated from the second driving wheel 24, the movable shell 3 moves backward and resets under the action of the elastic force of the first tension spring 25. Through the mechanical linkage, there is no need for a separate driving device to drive the movable shell to move, which has low cost, compact beat and good reliability.

[0035] like Figure 2 As shown, the movable shell 3 is gate-shaped when viewed from the front, and the two sides of the movable shell 3 are slidably connected to the inner wall of the housing 1 through guide rail sliders.

[0036] like Figure 4 As shown, a crossbeam 5 is provided in the movable shell 3, the nozzle 4 is connected to the crossbeam 5 via a guide rail slider, and a first rack 15 meshing with the first gear 8 is provided on the crossbeam 5. When the rotating shaft 7 reciprocates, the nozzle 4 continuously moves left and right under the action of the first gear 8 and the first rack 15.

[0037] like Figure 5As shown, a support plate 9 is provided on the side of the moving shell 3, a turntable 10 is provided on the support plate 9, a driving rod 11 is provided on the side wall of the moving shell 3, which passes through the side wall of the moving shell 3 and is slidably connected with the moving shell 3, a second gear 14 is provided on the first driving shaft 6, a second rack meshing with the second gear 14 is provided at the bottom of the driving rod 11, a long hole 12 is provided at one end of the outer side of the driving rod 11, and a first driving wheel 13 matching with the long hole 12 is provided at an eccentric position of the turntable 10. When the turntable 10 rotates, under the action of the first driving wheel 13 and the long hole 12, the driving rod 11 continuously moves left and right, and at this time, under the action of the second rack and the second gear 14, the first driving shaft 6 reciprocates.

[0038] like Figure 1 As shown, an opening 16 is provided on the side of the housing 1 , and the support plate 9 passes through the opening 16 without causing interference with the housing 1 .

[0039] like Figure 5 As shown, the support plate 9 is provided with a first motor 17 for driving the turntable 10 to rotate.

[0040] like Figure 3 As shown, the connecting mechanism includes: a No. 1 connecting rod 18, a No. 2 connecting rod 19, a No. 1 belt 20, and a No. 2 belt 21. The No. 1 connecting rod 18 is hinged to the No. 2 connecting rod 19, and a rotatable axle pin is provided at the hinge between the two. The end of the No. 1 connecting rod 18 away from the No. 2 connecting rod 19 is rotatably connected to the first drive shaft 6, and the end of the No. 2 connecting rod 19 away from the No. 1 connecting rod 18 is rotatably connected to the rotating shaft 7. The first drive shaft 6 is connected to the rotating shaft 7 through the No. 1 belt 20 and the No. 2 belt 21.

[0041] When the nozzle 4 moves left and right, the distance between the nozzle 4 and the first drive shaft 6 will change, and the rotation of the rotating shaft 7 requires it to be connected to the first drive shaft 6. The rotation of the first drive shaft 6 drives the rotating shaft 7 to rotate to move the nozzle 4, which can be achieved through the connecting mechanism.

[0042] When in use, when the first drive shaft 6 rotates, it drives the No. 1 belt 20 to move, and the No. 1 belt 20 drives the No. 2 belt 21 to move, thereby causing the rotating shaft 7 to rotate accordingly. Among them, two coaxially arranged pulleys are fixed on the axle pin where the No. 1 connecting rod 18 and the No. 2 connecting rod 19 are hinged. One of the pulleys is connected to the first drive shaft 6 through the No. 1 belt 20, and the other pulley is connected to the rotating shaft 7 of the grinding disc 13 through the No. 2 belt 21.

[0043] like Figure 1 As shown, the front end of the conveyor belt 2 is provided with an output mechanism for outputting the printed substrate.

[0044] like Figure 6 to Figure 7 As shown, the output mechanism includes a base 26, a rotating frame 27 rotatably connected between the front end and the base 26, and a plurality of conveying rollers 28 arranged in the rotating frame 27. The base 26 is provided with a second driving mechanism for driving the rotating frame 27 to swing. After the printed substrate is conveyed to the conveying roller 28, the second driving mechanism drives the rear end of the rotating frame 27 to swing upward, and the substrate slides from the conveying roller 28 to the storage slot, thereby realizing automatic collection and storage of the substrate.

[0045] The second driving mechanism includes a V-shaped frame 29 symmetrically arranged on the base 26, the V-shaped frame 29 is rotatably connected to the base 26 at a corner position, a support wheel 30 cooperating with the rotating frame 27 is provided at the upper end of the V-shaped frame 29, the front end of the V-shaped frame 29 is connected to the base 26 by a second tension spring 31, and the two V-shaped frames 29 are connected by a cross bar 32. A second driving shaft 33 is provided on the base 26, and a cam 34 cooperating with the cross bar 32 is provided on the second driving shaft 33. A second motor 35 that drives the second driving shaft 33 to rotate is provided on the base 26, and the second motor 35 drives the second driving shaft 33 to rotate through a belt. Under the action of the cam 34 and the cross bar 32, the V-shaped frame 29 overcomes the elastic force of the second tension spring 31 and swings, thereby driving the rear end of the rotating frame 27 to swing up and down.

[0046] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "left", "right", "up", "down", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection, it can be a direct connection, it can be an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A digital inkjet printing device, characterized in that: The invention comprises a housing (1), a conveyor belt (2) arranged in the housing (1) for conveying a printing substrate, a movable housing (3) arranged in the housing (1) and moving forward and backward in the housing (1), and a nozzle (4) arranged in the movable housing (3) and moving left and right in the movable housing (3); a first driving mechanism for driving the nozzle (4) to move left and right is arranged in the movable housing (3); The first driving mechanism comprises a first driving shaft (6) arranged on the side wall of the moving shell (3) and reciprocatingly rotating in the moving shell (3), a rotating shaft (7) arranged on the nozzle (4), and a first gear (8) being arranged on the rotating shaft (7) for driving the nozzle (4) to move left and right. The first driving shaft (6) is connected to the rotating shaft (7) via a connecting mechanism. When the first driving shaft (6) rotates, the moving shell (3) continuously moves forward and backward under the action of the linkage mechanism. The linkage mechanism comprises a drive disk (22) arranged at the rear end of the first drive shaft (6), a protrusion (23) arranged on the rear side of the drive disk (22), and a second drive wheel (24) arranged on the inner wall of the shell (1) and cooperating with the rear side of the drive disk (22); the rear end of the movable shell (3) is connected to the rear end of the shell (1) via a first tension spring (25).

2. A digital inkjet printing device as claimed in claim 1, characterized in that: The two sides of the movable shell (3) are slidably connected to the inner wall of the shell (1) via guide rail sliders.

3. A digital inkjet printing device as claimed in claim 1, characterized in that: A crossbeam (5) is provided in the movable shell (3); the nozzle (4) and the crossbeam (5) are connected via a guide rail slider; and a first rack (15) meshing with the first gear (8) is provided on the crossbeam (5).

4. A digital inkjet printing device as claimed in claim 1, characterized in that: A support plate (9) is provided on the side of the movable shell (3), a rotating disk (10) is provided on the support plate (9), a driving rod (11) is provided on the side wall of the movable shell (3) and passes through the side wall of the movable shell (3) and is slidably connected to the movable shell (3), a second gear (14) is provided on the first driving shaft (6), a second rack meshing with the second gear (14) is provided at the bottom of the driving rod (11), a long hole (12) is provided at one end of the outer side of the driving rod (11), and a first driving wheel (13) matching with the long hole (12) is provided at an eccentric position of the rotating disk (10).

5. A digital inkjet printing device as claimed in claim 4, characterized in that: The shell (1) is provided with an opening (16) on the side surface, and the support plate (9) passes through the opening (16).

6. A digital inkjet printing device as claimed in claim 4, characterized in that: The support plate (9) is provided with a first motor (17) for driving the turntable (10) to rotate.

7. A digital inkjet printing device as claimed in claim 1, characterized in that: The connecting mechanism comprises: a No. 1 connecting rod (18), a No. 2 connecting rod (19), a No. 1 belt (20), and a No. 2 belt (21); the No. 1 connecting rod (18) is hinged to the No. 2 connecting rod (19), and a rotatable axle pin is provided at the hinge between the two; the end of the No. 1 connecting rod (18) away from the No. 2 connecting rod (19) is rotatably connected to the first drive shaft (6); the end of the No. 2 connecting rod (19) away from the No. 1 connecting rod (18) is rotatably connected to the rotating shaft (7); the first drive shaft (6) is connected to the rotating shaft (7) via the No. 1 belt (20) and the No. 2 belt (21).

8. A digital inkjet printing device as claimed in claim 1, characterized in that: The front end of the conveyor belt (2) is provided with an output mechanism for outputting printed substrates.

9. A digital inkjet printing device as claimed in claim 8, characterized in that: The output mechanism comprises a base (26), a rotating frame (27) rotatably connected between the front end and the base (26), and a plurality of conveying rollers (28) arranged in the rotating frame (27); a second driving mechanism for driving the rotating frame (27) to swing is provided on the base (26).

10. A digital inkjet printing device as claimed in claim 9, characterized in that: The second driving mechanism comprises a V-shaped frame (29) symmetrically arranged on the base (26); the V-shaped frame (29) is rotatably connected to the base (26) at a corner position; a support wheel (30) cooperating with the rotating frame (27) is provided at the upper end of the V-shaped frame (29); the front end of the V-shaped frame (29) is connected to the base (26) via a second tension spring (31); the two V-shaped frames (29) are connected via a cross bar (32); a second driving shaft (33) is provided on the base (26); a cam (34) cooperating with the cross bar (32) is provided on the second driving shaft (33); and a second motor (35) for driving the second driving shaft (32) to rotate is provided on the base (26).

Images