Printing device

Abstract

The utility model relates to a printing device. The printing device comprises a rack, an upper mold transfer printing cylinder, a plurality of upper molds, a plurality of pieces of printing cloth, a lower mold transfer printing cylinder, a plurality of lower molds, a plurality of printing color stations and a conveying part. The lower die transfer printing cylinder is rotatably connected to the rack and located below the upper die transfer printing cylinder, and a rotating shaft of the lower die transfer printing cylinder is parallel to a rotating shaft of the upper die transfer printing cylinder; one ends of the multiple lower dies are connected to the lower die transfer printing roller at intervals in the circumferential direction; the multiple printing color stations are arranged on the rack, distributed in the circumferential direction of the upper mold transfer printing cylinder at intervals and located on the two sides and the upper side of the upper mold transfer printing cylinder, and printing color station cylinders are arranged at the ends, close to the upper mold transfer printing cylinder, of the printing color stations. The height of one end of the printing color station away from the upper mold transfer printing cylinder is larger than or equal to that of one end close to the upper mold transfer printing cylinder. The lower mold transfer printing cylinder is arranged below the upper mold transfer printing cylinder, the lower mold transfer printing cylinder does not need to be installed on the lower side, a discharging port of the printing color station can face downwards, and normal discharging of printing ink is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of product printing, in particular to a printing device. Background Art

[0002] Packaging box printing machines are used to print patterns on the outer surface of packaging boxes. With the substantial increase in the demand for packaging boxes, users have higher and higher requirements on the appearance of packaging boxes. The shortcomings and defects of packaging box printing machines in the current market are gradually emerging.

[0003] The packaging box printing machine is equipped with a transfer mold and a support mold. A plurality of printing color stations are arranged around the transfer mold, and one printing color station corresponds to one color pattern. During the printing process, the transfer mold needs to be contacted with the printing color stations one by one to obtain a complete color pattern. While obtaining the complete pattern, the transport mechanism transports the cup lid between the transfer mold and the support mold, and then the transfer mold prints the complete color pattern onto the outer surface of the packaging box. However, when the pattern that the user needs to print contains more colors, more printing color stations are required to complete the transfer function, which leads to the need to install more printing color stations around the transfer mold.

[0004] The support mold of the packaging box printing machine currently on the market is set on the left or right side of the transfer mold. When there are many printing color stations, some printing color stations have to be set below the transfer mold. This setting method makes the discharge end of the printing color station face upward, causing the internal ink to be affected by gravity and unable to discharge normally. In addition, the installation of the printing color station below the transfer mold will affect the installation and removal of the transfer mold. This problem can be solved by increasing the overall diameter of the transfer mold, but it will increase the cost. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A printing device, comprising:

[0007] frame;

[0008] An upper mold transfer roller, the upper mold transfer roller is rotatably connected to the frame;

[0009] A plurality of upper molds, one end of each of the upper molds being connected to the upper mold transfer roller at intervals along the circumferential direction, and the other end of each of the upper molds being formed into an arc shape;

[0010] A plurality of printing cloths, wherein the plurality of printing cloths are respectively attached to the other ends of the plurality of upper molds;

[0011] A lower mold transfer roller, the lower mold transfer roller is rotatably connected to the frame and is located below the upper mold transfer roller, and the rotation axis of the lower mold transfer roller is parallel to the rotation axis of the upper mold transfer roller;

[0012] A plurality of lower molds, one end of each of the plurality of lower molds is connected to the lower mold transfer roller at intervals along the circumferential direction, the other end of each of the plurality of lower molds is formed into an arc shape, and a gap is provided between the circumscribed circles of the plurality of lower molds and the circumscribed circles of the plurality of upper molds;

[0013] A plurality of printing color stations, wherein the plurality of printing color stations are arranged on the frame, and the plurality of printing color stations are spaced apart along the circumference of the upper mold transfer roller and are located on both sides and the upper side of the upper mold transfer roller. A printing color station roller is provided at one end of the printing color station close to the upper mold transfer roller, and the printing color station roller is tangent to the circumscribed circle of the upper mold. The height of the printing color station away from one end of the upper mold transfer roller is greater than or equal to the height close to one end of the upper mold transfer roller, and each printing color station is filled with ink of different colors;

[0014] The transporting part is used to transport the packaging box to between the upper mold and the lower mold.

[0015] Preferably, the printing device further comprises:

[0016] An upper mold transfer roller gear, wherein the upper mold transfer roller gear is fixed on the upper mold transfer roller, and the axis of the upper mold transfer roller gear coincides with the axis of the upper mold transfer roller;

[0017] The lower mold transfer roller gear is fixed on the lower mold transfer roller, the axis of the lower mold transfer roller gear coincides with the axis of the lower mold transfer roller, and the lower mold transfer roller gear is meshed with the upper mold transfer roller gear.

[0018] Preferably, the circumference ratio of the upper mold transfer roller gear to the lower mold transfer roller gear is equal to the circumference ratio of the circumscribed circle of the upper mold to the circumscribed circle of the lower mold.

[0019] Preferably, the transport part comprises a chain, a part of which is located between the upper die and the lower die, a sprocket is fixed on the lower die transfer roller, the axis of the sprocket coincides with the axis of the lower die transfer roller, and the sprocket is meshed with the chain.

[0020] Preferably, the transport unit further comprises a plurality of push rods, which are arranged at intervals on the chain to limit the position of the packaging box.

[0021] Preferably, the plurality of printing color stations are distributed symmetrically.

[0022] Preferably, the printing cloth is a rubber blanket.

[0023] Preferably, the packaging box is made of plastic.

[0024] The utility model has at least the following beneficial effects:

[0025] The printing device of this embodiment arranges the lower mold transfer roller below the upper mold transfer roller, thereby leaving a large amount of space on the left and right sides of the upper mold transfer roller. When there are many printing color stations, all the printing color stations can still be installed on the left and right sides and the upper side without having to be installed on the lower side, thereby ensuring that the discharge port of the printing color station can be set downward, ensuring the normal discharge of ink. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a printing device with a printing color station according to an embodiment of the utility model;

[0027] Figure 2 This is a schematic structural diagram of a printing device without a printing color station according to an embodiment of the utility model;

[0028] Figure numerals: 1. frame; 2. upper mold transfer roller; 3. upper mold; 4. printing cloth; 5. lower mold transfer roller; 6. lower mold; 7. printing color station; 8. transport part; 9. chain; 10. sprocket; 11. push rod. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0030] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate quantity restrictions, but indicate the existence of at least one. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship also changes accordingly.

[0031] The embodiments of the present utility model are described in detail below in conjunction with the accompanying drawings.

[0032] like Figure 1-2 As shown, an embodiment of the utility model provides a printing device, including a frame 1, an upper mold transfer roller 2, a plurality of upper molds 3, a plurality of printing cloths 4, a lower mold transfer roller 5, a plurality of lower molds 6, a plurality of printing color stations 7, and a transport unit 8. The upper mold transfer roller 2 is rotatably connected to the frame 1; one end of the plurality of upper molds 3 is connected to the upper mold transfer roller 2 at intervals along the circumferential direction, and the other end of the plurality of upper molds 3 is formed into an arc shape; the plurality of printing cloths 4 are respectively attached to the other end of the plurality of upper molds 3; the lower mold transfer roller 5 is rotatably connected to the frame 1 and is located below the upper mold transfer roller 2, and the rotation axis of the lower mold transfer roller 5 is parallel to the rotation axis of the upper mold transfer roller 2; one end of the plurality of lower molds 6 is connected to the lower mold transfer roller 5 at intervals along the circumferential direction, and the other end of the plurality of lower molds 6 is formed into an arc shape, and the circumscribed circle of the plurality of lower molds 6 is parallel to the rotation axis of the upper mold transfer roller 2. There are intervals between the circumscribed circles of the mold 3; multiple printing color stations 7 are arranged on the frame 1, and the multiple printing color stations 7 are distributed at intervals along the circumference of the upper mold transfer roller 2, and are located on both sides and the upper side of the upper mold transfer roller 2. The printing color station 7 is provided with a printing color station 7 roller at one end close to the upper mold transfer roller 2, and the printing color station 7 roller is tangent to the circumscribed circle of the upper mold 3. The height of the printing color station 7 away from the end of the upper mold transfer roller 2 is greater than or equal to the height close to the end of the upper mold transfer roller 2, and each printing color station 7 is filled with ink of different colors; the transportation unit 8 is used to transport the packaging box to between the upper mold 3 and the lower mold 6.

[0033] The printing principle of the printing device of this embodiment is as follows: the upper mold transfer roller 2, the lower mold transfer roller 5 and the transport part 8 are started simultaneously. Taking one of the upper molds 3 as an example, the printing cloth 4 of the upper mold 3 contacts the surrounding printing color stations 7 one by one starting from the first printing color station 7, so as to obtain the patterns on each printing color station 7 one by one; after the upper mold 3 obtains the patterns of all the printing color stations 7, the upper mold 3 rotates to the position of one of the lower molds 6, and at the same time, a packaging box on the transport part 8 also arrives between the upper mold 3 and the lower mold 6, the lower mold 6 supports the packaging box, and the upper mold 3 completes printing on the packaging box; other upper molds 3 continue to complete printing on subsequent packaging boxes according to the above steps.

[0034] The printing device of this embodiment arranges the lower mold transfer roller 5 below the upper mold transfer roller 2, thereby leaving a large amount of space on the left and right sides of the upper mold transfer roller 2. When there are many printing color stations 7, all the printing color stations 7 can still be installed on the left and right sides and the upper side without having to be installed on the lower side, thereby ensuring that the discharge port of the printing color station 7 can be set downward, ensuring the normal discharge of ink.

[0035] In this embodiment, the printing device further includes an upper mold transfer roller gear and a lower mold transfer roller gear. The upper mold transfer roller gear is fixed on the upper mold transfer roller 2, and the axis of the upper mold transfer roller gear coincides with the axis of the upper mold transfer roller 2; the lower mold transfer roller gear is fixed on the lower mold transfer roller 5, and the axis of the lower mold transfer roller gear coincides with the axis of the lower mold transfer roller 5, and the lower mold transfer roller gear meshes with the upper mold transfer roller gear. A driving device is provided on the frame 1, and the driving device drives the upper mold transfer roller 2 to rotate, and the upper mold transfer roller gear rotates synchronously therewith, and drives the lower mold transfer roller 5 to rotate through the cooperation of the two gears. Among them, the circumference ratio of the upper mold transfer roller gear and the lower mold transfer roller gear is equal to the circumference ratio of the circumscribed circle of the upper mold 3 and the circumscribed circle of the lower mold 6, thereby ensuring that the linear speeds of the upper mold 3 and the lower mold 6 are the same, and avoiding relative movement between the upper mold 3 and the lower mold 6.

[0036] In this embodiment, the transport part 8 includes a chain 9, a part of which is located between the upper mold 3 and the lower mold 6, and a sprocket 10 is fixed on the lower mold transfer roller 5, the axis of the sprocket 10 coincides with the axis of the lower mold transfer roller 5, and the sprocket 10 is meshed with the chain 9. During the rotation of the lower mold transfer roller 5, the sprocket 10 rotates synchronously therewith, and drives the chain 9 to move between the upper mold 3 and the lower mold 6. Through the cooperation of the sprocket 10 and the chain 9, it is ensured that the packaging box on the chain 9 can move synchronously with the upper mold 3 and the lower mold 6, thereby improving the accuracy of alignment.

[0037] In this embodiment, the transport part 8 further includes a plurality of push rods 11, which are arranged at intervals on the chain 9 and are used to limit the position of the packaging box. The limit of the push rods 11 prevents the packaging box from moving on the transport part 8, thereby improving the accuracy of the alignment.

[0038] In this embodiment, the plurality of printing color stations 7 are distributed symmetrically, making the layout more reasonable.

[0039] In this embodiment, the printing cloth 4 is a rubber blanket, which has good printing effect, low price and high cost performance.

[0040] In this embodiment, the packaging box is made of plastic.

[0041] In this embodiment, the packaging box is a box body or a cover body.

[0042] The above embodiments are used to further illustrate the present invention, but the present invention is not limited to these specific implementations. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention should be understood to be within the protection scope of the present invention.

Claims

1. A printing device, characterized in that: include: Rack (1); An upper mold transfer roller (2), the upper mold transfer roller (2) being rotatably connected to the frame (1); A plurality of upper dies (3), one end of each of the plurality of upper dies (3) being connected to the upper die transfer roller (2) at intervals along the circumferential direction, and the other end of each of the plurality of upper dies (3) being formed into an arc shape; A plurality of printing cloths (4), wherein the plurality of printing cloths (4) are respectively attached to the other ends of the plurality of upper molds (3); a lower mold transfer roller (5), the lower mold transfer roller (5) being rotatably connected to the frame (1) and being located below the upper mold transfer roller (2), the rotation axis of the lower mold transfer roller (5) being parallel to the rotation axis of the upper mold transfer roller (2); A plurality of lower dies (6), one end of each of the plurality of lower dies (6) being connected to the lower die transfer roller (5) at intervals along the circumferential direction, the other end of each of the plurality of lower dies (6) being formed into an arc shape, and a gap being provided between the circumscribed circles of the plurality of lower dies (6) and the circumscribed circles of the plurality of upper dies (3); A plurality of printing color stations (7), wherein the plurality of printing color stations (7) are arranged on the frame (1), and the plurality of printing color stations (7) are distributed at intervals along the circumference of the upper mold transfer roller (2), and are located on both sides and the upper side of the upper mold transfer roller (2); a printing color station (7) roller is provided at one end of the printing color station (7) close to the upper mold transfer roller (2); the printing color station (7) roller is tangent to the circumscribed circle of the upper mold (3); the height of the printing color station (7) away from one end of the upper mold transfer roller (2) is greater than or equal to the height of the end close to the upper mold transfer roller (2); and each printing color station (7) contains ink of a different color; Ministry of Transport (8).

2. The printing device according to claim 1, characterized in that Also includes: An upper mold transfer roller gear, wherein the upper mold transfer roller gear is fixed on the upper mold transfer roller (2), and the axis of the upper mold transfer roller gear coincides with the axis of the upper mold transfer roller (2); A lower mold transfer roller gear is fixed on the lower mold transfer roller (5), the axis of the lower mold transfer roller gear coincides with the axis of the lower mold transfer roller (5), and the lower mold transfer roller gear is meshed with the upper mold transfer roller gear.

3. The printing device according to claim 2, characterized in that The circumference ratio of the upper mold transfer roller gear to the lower mold transfer roller gear is equal to the circumference ratio of the circumscribed circle of the upper mold (3) to the circumscribed circle of the lower mold (6).

4. The printing device according to claim 1, characterized in that The transport part (8) comprises a chain (9), a part of which is located between the upper mold (3) and the lower mold (6), a sprocket (10) is fixed on the lower mold transfer roller (5), the axis of the sprocket (10) coincides with the axis of the lower mold transfer roller (5), and the sprocket (10) is meshed with the chain (9).

5. The printing device according to claim 4, characterized in that The transport part (8) further comprises a plurality of push rods (11), wherein the plurality of push rods (11) are arranged at intervals on the chain (9).

6. The printing device according to claim 1, characterized in that: The plurality of printing color stations (7) are distributed symmetrically on the left and right.

7. The printing device according to claim 1, characterized in that: The printing cloth (4) is a rubber cloth.

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