Jet printing device suitable for curved-surface medium

Abstract

The utility model relates to the technical field of printing, and discloses a jet printing device suitable for a curved medium, which comprises a pad printing rubber head, a jet printing module and a baffle plate assembly, a printing surface is arranged at the bottom of the transfer printing rubber head; the jet printing module is provided with a jet printing position located under the transfer printing rubber head. When the jet printing module is located at the jet printing position, the baffle assembly is provided with a working position moving to the position between the transfer printing rubber head and the jet printing module and a moving-out position moving out of the position between the transfer printing rubber head and the jet printing module. A clearance hole is formed in the baffle assembly; when the baffle assembly is located at the working position, the pad printing rubber head has an extrusion position for descending and extruding the baffle assembly; and when the transfer printing rubber head is located at the extrusion position, the jet printing module performs jet printing on the printing surface through the clearance hole. According to the jet printing device suitable for the curved surface medium, under the supporting effect of the baffle assembly, the jet printing precision is improved, and a good printing effect is obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of printing, in particular to a spray printing device suitable for curved surface media. Background Art

[0002] With the development of social economy and the continuous improvement of consumption level, people are pursuing high-quality life and have put forward higher requirements for the quality and appearance of daily necessities. For example, in addition to the functional requirements of daily ceramics, people's requirements for the decorative effects of daily ceramics are also constantly increasing. Porcelain with rich colors and fine and beautiful patterns is more popular with consumers.

[0003] At present, the printing processes for daily-use ceramics mainly include: hand-painted, water transfer and pad printing. Hand-painted is unique, difficult to make, and costly, and is only suitable for customization or small-batch production. Water transfer printing requires the production of flower paper and manual decals, which is a complicated process and difficult to achieve automated production. Pad printing is a printing process that can achieve large-scale automated production. The pad printing system generally prints the required pattern from bottom to top on the printing surface of the pad printing rubber head, and then prints the pattern from top to bottom on workpieces such as curved media through the pad printing rubber head. However, the printing surface of the pad printing rubber head has problems such as irregular shape and large drop between the lowest point and the highest point, which can easily lead to low printing accuracy and thus affect the printing effect. Utility Model Content

[0004] In view of this, the utility model provides a printing device suitable for curved surface media to solve the problem of low printing accuracy caused by irregular shape or large drop of the printing surface.

[0005] The utility model provides a printing device suitable for curved surface media, comprising a pad printing rubber head, a printing module and a baffle assembly; a printing surface is provided at the bottom of the pad printing rubber head; the printing module has a printing position located directly below the pad printing rubber head; when the printing module is located at the printing position, the baffle assembly has a working position moved to between the pad printing rubber head and the printing module, and a moving-out position moved out from between the pad printing rubber head and the printing module; an air-avoiding hole is provided on the baffle assembly; when the baffle assembly is in the working position, the pad printing rubber head has an extrusion position for descending and extruding the baffle assembly; when the pad printing rubber head is in the extrusion position, the printing module prints the printing surface through the air-avoiding hole.

[0006] Beneficial effect: when the baffle assembly is in the working position, it is located between the pad printing rubber head and the printing module. When the pad printing rubber head descends and squeezes the baffle assembly to reach the squeezing position, the baffle assembly supports the bottom of the pad printing rubber head, and the hemispherical printing surface at the bottom of the pad printing rubber head is deformed under the support of the baffle assembly, presenting a plane or an arc surface similar to a plane. At this time, the printing surface has a regular shape and a small drop, and the printing module has high printing accuracy on the printing surface through the air avoidance hole; after the printing is completed, the pad printing rubber head has a rising position that rises and moves away from the baffle assembly. At this time, the pad printing rubber head returns to its original shape and maintains a certain elastic force. At this time, the pattern on the printing surface of the pad printing rubber head is printed on the curved medium, which will obtain a better printing effect. The air avoidance holes can adapt to the printing of most patterns, and can also adapt to the printing of special patterns by changing the shape and area of ​​the air avoidance holes; for example, multiple baffle assemblies are set, and the shapes and areas of the air avoidance holes on different baffle assemblies are inconsistent. Some air avoidance holes can adapt to the printing of most patterns, and some air avoidance holes can adapt to the printing of special patterns.

[0007] In an optional implementation, it also includes:

[0008] Mounting seat;

[0009] The first driving mechanism is fixedly connected to the mounting seat, and the first power output end of the first driving mechanism is connected to the baffle assembly for driving the baffle assembly to move between the working position and the moving-out position along a first direction.

[0010] In an optional implementation, it also includes:

[0011] A guide sleeve, fixedly connected to the mounting seat, the guide sleeve comprising a guide hole, the axis of the guide hole being parallel to the axis of the first power output end;

[0012] A guide rod is slidably arranged in the guide hole, and one end of the guide rod is connected to the baffle assembly.

[0013] In an optional embodiment, the guide sleeves are provided in two groups, and the two groups of guide sleeves are respectively arranged on both sides of the first driving mechanism, and each group of guide sleeves is matched with a group of guide rods.

[0014] In an optional embodiment, a buffer is further included, which is fixedly connected to the mounting seat and is used to buffer the movement of the baffle assembly.

[0015] In an optional embodiment, the baffle assembly includes a baffle body and a support plate, the support plate is fixedly connected to the bottom of the baffle body and is located close to one end of the first driving mechanism, the first power output end and the guide rod are both connected to the support plate; the air avoidance hole is arranged on the baffle body; the buffer is fixedly connected to the top of the guide sleeve for buffering the movement of the baffle body.

[0016] In an optional embodiment, the first driving mechanism is a cylinder.

[0017] In an optional embodiment, the pad printing rubber head also has an ascending position and a printing position for descending again to print on a curved medium; the printing device suitable for curved media also includes a lifting mechanism, and the lifting drive end of the lifting mechanism is connected to the pad printing rubber head, which is used to drive the pad printing rubber head to move in a vertical direction, and the vertical direction is perpendicular to the first direction.

[0018] In an optional embodiment, it further includes a workpiece fixing frame, which is used to fix the curved surface medium to be printed; the workpiece fixing frame has a printing position that moves to the bottom of the pad printing rubber head.

[0019] In an optional implementation, it also includes:

[0020] A working slide, the printing module and the workpiece fixing frame are arranged at intervals on the top of the working slide;

[0021] A second driving mechanism, wherein a second power output end of the second driving mechanism is connected to the working slide, and is used to drive the working slide to move along a second direction, wherein the first direction is perpendicular to the second direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of a partial structure of a printing device suitable for curved surface media according to an embodiment of the utility model from a viewing angle;

[0024] Figure 2 A schematic diagram of a local structure of a printing device suitable for curved surface media according to an embodiment of the utility model from another perspective;

[0025] Figure 3It is a schematic diagram of a working state 1 of a printing device suitable for curved surface media according to an embodiment of the utility model;

[0026] Figure 4 This is a schematic diagram of the second working state of a printing device suitable for curved media according to an embodiment of the utility model.

[0027] Description of reference numerals:

[0028] 1. Pad printing rubber head; 2. Printing module; 3. Baffle assembly; 31. Air-avoiding hole; 32. Baffle body; 33. Support plate; 4. Mounting seat; 5. First driving mechanism; 6. Guide sleeve; 7. Guide rod; 8. Buffer; 9. Workpiece fixing frame; 10. Curved medium. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0030] Combine the following Figures 1 to 4 , describing an embodiment of the utility model.

[0031] According to an embodiment of the utility model, a printing device suitable for a curved medium 10 is provided, comprising a pad printing head 1, a printing module 2 and a baffle assembly 3; a printing surface is provided at the bottom of the pad printing head 1; the printing module 2 has a printing position located directly below the pad printing head 1; when the printing module 2 is located at the printing position, the baffle assembly 3 has a working position moved to between the pad printing head 1 and the printing module 2, and a moving-out position moved out from between the pad printing head 1 and the printing module 2; an air avoidance hole 31 is provided on the baffle assembly 3; when the baffle assembly 3 is in the working position, the pad printing head 1 has an extrusion position of descending and extruding the baffle assembly 3; when the pad printing head 1 is in the extrusion position, the printing module 2 prints the printing surface through the air avoidance hole 31.

[0032] When the baffle assembly 3 is in the working position, it is located between the pad printing rubber head 1 and the printing module 2. When the pad printing rubber head 1 descends and squeezes the baffle assembly 3 to reach the squeezing position, the baffle assembly 3 supports the bottom of the pad printing rubber head 1, and the hemispherical printing surface at the bottom of the pad printing rubber head 1 is deformed under the support of the baffle assembly 3, presenting a plane or an arc surface similar to a plane. At this time, the printing surface has a regular shape and a small drop, and the printing module 2 has high printing accuracy on the printing surface through the air avoidance hole 31; after the printing is completed, the pad printing rubber head 1 has a rising position that rises and moves away from the baffle assembly 3. At this time, the pad printing rubber head 1 restores its original shape and maintains a certain elastic force. At this time, the pattern on the printing surface of the pad printing rubber head 1 is printed on the curved medium 10, and a better printing effect will be obtained. The air-avoiding holes 31 can adapt to the printing of most patterns, and can also adapt to the printing of special patterns by changing the shape and area of ​​the air-avoiding holes 31; for example, multiple baffle assemblies 3 are set, and the shapes and areas of the air-avoiding holes 31 on different baffle assemblies 3 are inconsistent. Some of the air-avoiding holes 31 can adapt to the printing of most patterns, and some of the air-avoiding holes 31 can adapt to the printing of special patterns.

[0033] Specifically, the pad printing rubber head 1 is a hemispherical structure made of elastic silicone. The curved surface medium 10 can be a workpiece such as a bowl or a plate. The printing module 2 is a digital printing module 2, which does not require the production of a screen, has flexible conversion, high printing accuracy, and can achieve multi-color printing.

[0034] In one embodiment, it also includes a mounting base 4 and a first driving mechanism 5, the first driving mechanism 5 is fixedly connected to the mounting base 4, and the first power output end of the first driving mechanism 5 is connected to the baffle assembly 3 for driving the baffle assembly 3 to move between the working position and the removed position along the first direction.

[0035] The mounting base 4 can fix the main body of the first driving mechanism 5, and can also support the first driving mechanism 5 to a corresponding height, so that the baffle assembly 3 can move above the printing module 2 through the first power output end of the first driving mechanism 5. The first direction is the horizontal direction.

[0036] In one embodiment, it also includes a guide sleeve 6 and a guide rod 7. The guide sleeve 6 is fixedly connected to the mounting seat 4. The guide sleeve 6 includes a guide hole. The axis of the guide hole is parallel to the axis of the first power output end; the guide rod 7 is slidably inserted into the guide hole, and one end of the guide rod 7 is connected to the baffle assembly 3.

[0037] The sliding cooperation between the guide sleeve 6 and the guide rod 7 can enhance the supporting effect on the baffle assembly 3 and limit the movement of the baffle assembly 3.

[0038] As a convertible implementation, it can also include a dovetail slot and a wedge strip, the dovetail slot is fixedly connected to the mounting seat 4, the wedge strip is slidably arranged in the dovetail slot, and one end of the wedge strip is fixedly connected to the baffle assembly 3.

[0039] In one embodiment, there are two groups of guide sleeves 6 , which are respectively arranged on both sides of the first driving mechanism 5 , and each group of guide sleeves 6 is matched with a group of guide rods 7 .

[0040] The two groups of guide sleeves 6 can limit and support the baffle assembly 3 on both sides of the first driving mechanism 5, that is, limit and support the baffle assembly 3 along a direction perpendicular to the first direction.

[0041] In one embodiment, a buffer 8 is further included, which is fixedly connected to the mounting base 4 and is used to buffer the movement of the baffle assembly 3.

[0042] When the baffle assembly 3 is driven by the first power output end of the first driving mechanism 5 and moves from the working position to the moving-out position, the buffer 8 can buffer the movement of the baffle assembly 3 to prevent the baffle assembly 3 from colliding with structures such as the mounting seat 4 or the guide sleeve 6 due to excessively fast movement.

[0043] In one embodiment, the baffle assembly 3 includes a baffle body 32 and a support plate 33, the support plate 33 is fixedly connected to the bottom of the baffle body 32 and is located at one end close to the first driving mechanism 5, the first power output end and the guide rod 7 are both connected to the support plate 33; the air avoidance hole 31 is set on the baffle body 32; the buffer 8 is fixedly connected to the top of the guide sleeve 6, and is used to buffer the movement of the baffle body 32.

[0044] In order to ensure a better printing effect, the baffle body 32 needs to be set as a thinner sheet, but the connection stability between the thin sheet and the first power output end and the guide rod 7 is poor. In this embodiment, the support plate 33 is provided to enhance the connection stability between the baffle body 32 and the first power output end and the guide rod 7. The buffer 8 is fixedly connected to the top of the guide sleeve 6, which can reduce the space occupied by the buffer 8 and facilitate the cooperation between the buffer 8 and the baffle body 32.

[0045] Specifically, the support plate 33 is detachably connected to the baffle body 32 by fasteners such as screws and bolts. The guide sleeve 6 is detachably connected to the mounting seat 4 by fasteners such as bolts and screws. The buffer 8 is detachably connected to the guide sleeve 6 by fasteners such as screws and bolts. The first driving mechanism 5 is detachably connected to the mounting seat 4 by fasteners such as screws and bolts.

[0046] In one embodiment, the first driving mechanism 5 is a cylinder.

[0047] As a convertible embodiment, the first driving mechanism 5 may also be a linear driving motor.

[0048] In one embodiment, the pad printing rubber head 1 also has an ascending position and a printing position for descending again to print on the curved medium 10; the printing device suitable for the curved medium 10 also includes a lifting mechanism, and the lifting drive end of the lifting mechanism is connected to the pad printing rubber head 1, which is used to drive the pad printing rubber head 1 to move in the vertical direction, and the vertical direction is perpendicular to the first direction.

[0049] After the pad printing rubber head 1 is in the extrusion position, it also has an ascending position to rise away from the baffle assembly 3 and a printing position to descend again to print on the curved medium 10; when the pad printing rubber head 1 is in the ascending position, the baffle assembly 3 can be switched between the working position and the moving-out position. After the baffle assembly 3 is switched to the moving-out position, the pad printing rubber head 1 can descend again to print on the curved medium 10 moved directly below it. The lifting mechanism is used to drive the pad printing rubber head 1 to move in the vertical direction to switch between the extrusion position, the ascending position and the printing position.

[0050] In one embodiment, a workpiece fixing frame 9 is further included, and the workpiece fixing frame 9 is used to fix the curved surface medium 10 to be printed; the workpiece fixing frame 9 has a printing position that moves to the bottom of the pad printing rubber head 1 .

[0051] The workpiece fixing frame 9 has a printing position and a moving position moved away from directly below the pad printing rubber head 1. After the baffle assembly 3 is switched to the moving position, the printing module 2 moves from the printing position to the waiting position, and the workpiece fixing frame 9 moves to the printing position. The curved surface medium 10 to be printed is located directly below the pad printing rubber head 1. The pad printing rubber head 1 descends from the rising position to the printing position and prints the curved surface medium 10. After printing is completed, the pad printing rubber head 1 rises to the rising position again, the workpiece fixing frame 9 moves from the printing position to the moving position, and the printing module 2 moves from the waiting position back to the printing position.

[0052] In one embodiment, it also includes a working slide and a second driving mechanism; the printing module 2 and the workpiece fixing frame 9 are arranged at intervals on the top of the working slide; the second power output end of the second driving mechanism is connected to the working slide, and is used to drive the working slide to move along the second direction, and the first direction is perpendicular to the second direction.

[0053] The first direction is perpendicular to the second direction, providing a relatively spacious moving space for the working slide and the baffle assembly 3. Driven by the working slide, the printing module 2 and the workpiece fixing frame 9 alternately arrive directly below the pad printing rubber head 1, and the printing module 2 prints on the pad printing rubber head 1 and the pad printing rubber head 1 prints the printed pattern on the curved surface medium 10 alternately, ensuring printing efficiency.

[0054] Specifically, the printing module 2 and the workpiece fixing frame 9 can be respectively arranged on both sides of the working slide; or two workpiece fixing frames 9 can be arranged, and the printing module 2 is arranged between the two workpiece fixing frames 9 .

[0055] In this embodiment, the working process of the pad printing system includes: after the pad printing system receives the printing command (or completes the working cycle of the previous curved surface medium 10), the pad printing rubber head 1 moves downward under the drive of the lifting mechanism, the working slide is translated under the drive of the second driving mechanism, the workpiece fixing frame 9 moves away, the printing module 2 moves toward the bottom of the pad printing rubber head 1, and the baffle assembly 3 moves to the working position; the baffle assembly 3 moves to the working position, the pad printing rubber head 1 moves down to the extrusion position, the printing surface of the pad printing rubber head 1 is supported and extruded to be a plane or an arc surface similar to a plane, and the printing module 2 moves to the spraying position. printing position, and prints the printing surface through the avoidance hole 31; during the printing process, the printing module 2 moves from the printing starting position to the printing ending position driven by the working slide to complete the printing on the printing surface; after the printing is completed, the working slide moves to drive the workpiece fixing frame 9 to move to the printing position, the pad printing rubber head 1 rises to the rising position, and the baffle assembly 3 moves to the moving-out position; the pad printing rubber head 1 descends to the printing position again to print on the curved surface medium 10, and the pad printing is completed; after the pad printing is completed, the pad printing rubber head 1 moves upward to the rising position again, and the pad printing work is completed, or the next working cycle starts.

[0056] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A printing device suitable for curved surface media, characterized in that: include: A pad printing rubber head (1) having a printing surface at the bottom; A printing module (2) having a printing position located directly below the pad printing head (1); A baffle assembly (3), when the printing module (2) is located at the printing position, the baffle assembly (3) has a working position moved to between the pad printing rubber head (1) and the printing module (2), and a moving-out position moved out from between the pad printing rubber head (1) and the printing module (2); the baffle assembly (3) is provided with an air avoidance hole (31); when the baffle assembly (3) is in the working position, the pad printing rubber head (1) has an extrusion position for descending and extruding the baffle assembly (3); when the pad printing rubber head (1) is in the extrusion position, the printing module (2) prints the printing surface through the air avoidance hole (31).

2. The printing device suitable for curved surface media according to claim 1, characterized in that: Also includes: Mounting seat (4); A first driving mechanism (5) is fixedly connected to the mounting seat (4), and a first power output end of the first driving mechanism (5) is connected to the baffle assembly (3) for driving the baffle assembly (3) to move along a first direction between the working position and the removed position.

3. The printing device suitable for curved surface media according to claim 2, characterized in that: Also includes: A guide sleeve (6) is fixedly connected to the mounting seat (4), the guide sleeve (6) comprising a guide hole, the axis of the guide hole being parallel to the axis of the first power output end; A guide rod (7) is slidably arranged in the guide hole, and one end of the guide rod (7) is connected to the baffle assembly (3).

4. The printing device suitable for curved surface media according to claim 3, characterized in that: The guide sleeves (6) are provided in two groups. The two groups of guide sleeves (6) are respectively arranged on both sides of the first driving mechanism (5), and each group of guide sleeves (6) is matched with a group of guide rods (7).

5. The printing device suitable for curved surface media according to claim 3, characterized in that: It also includes a buffer (8) which is fixedly connected to the mounting seat (4) and is used to buffer the movement of the baffle assembly (3).

6. The printing device suitable for curved surface media according to claim 5, characterized in that: The baffle assembly (3) comprises a baffle body (32) and a support plate (33), wherein the support plate (33) is fixedly connected to the bottom of the baffle body (32) and is located at one end close to the first driving mechanism (5), and the first power output end and the guide rod (7) are both connected to the support plate (33); the air avoidance hole (31) is arranged on the baffle body (32); and the buffer (8) is fixedly connected to the top of the guide sleeve (6) and is used to buffer the movement of the baffle body (32).

7. The printing device suitable for curved surface media according to claim 2, characterized in that: The first driving mechanism (5) is a cylinder.

8. The printing device suitable for curved surface media according to any one of claims 2 to 7, characterized in that: The pad printing rubber head (1) also has an ascending position and a printing position for descending again to print on a curved medium (10); the printing device suitable for the curved medium (10) also includes a lifting mechanism, the lifting drive end of the lifting mechanism is connected to the pad printing rubber head (1) and is used to drive the pad printing rubber head (1) to move in a vertical direction, wherein the vertical direction is perpendicular to the first direction.

9. The printing device suitable for curved surface media according to claim 8, characterized in that: It also comprises a workpiece fixing frame (9), wherein the workpiece fixing frame (9) is used to fix the curved surface medium (10) to be printed; the workpiece fixing frame (9) has a printing position that moves to the bottom of the pad printing rubber head (1).

10. The printing device suitable for curved surface media according to claim 9, characterized in that: Also includes: A working slide, the printing module (2) and the workpiece fixing frame (9) are arranged at intervals on the top of the working slide; A second driving mechanism, wherein a second power output end of the second driving mechanism is connected to the working slide, and is used to drive the working slide to move along a second direction, wherein the first direction is perpendicular to the second direction.

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