Double-machine multicolor printing machine

Abstract

The invention discloses a double-machine multi-color printing machine which comprises a plurality of silk-screen printing modules which are arranged in the X-axis direction. Each silk-screen printing module comprises two silk-screen printing devices and a drying machine, wherein the two silk-screen printing devices are symmetrically arranged in parallel in the Y-axis direction, and each silk-screen printing device comprises a printing machine. In the X-axis direction, the dryer is located on the downstream of the silk-screen printing device. The double-machine multicolor printing machine can greatly improve the printing efficiency of printed matters, so that the production efficiency of the printed matters is improved, and the economic benefit is improved.

Description

Technical Field

[0001] The invention relates to the technical field of screen printing machines, and in particular to a dual-machine multi-color printing machine. Background Art

[0002] Screen printing refers to the use of a silk screen as a base, and through the photosensitive platemaking method, a screen printing plate with images is made. Screen printing consists of five major elements: screen printing plate, scraper, ink, printing platform and substrate. Printing is carried out based on the basic principle that the mesh holes of the image part of the screen printing plate can pass through the ink, while the mesh holes of the non-image part cannot pass through the ink. When printing, ink is poured into one end of the screen printing plate, and a certain pressure is applied to the ink part of the screen printing plate with a scraper. At the same time, it moves at a uniform speed toward the other end of the screen printing plate. During the movement, the ink is squeezed from the mesh holes of the image part by the scraper onto the printed matter (substrate).

[0003] For printed materials with multiple colors and patterns, multiple printing machines need to be set up to work. Multiple printing machines are usually arranged along the production line direction to print different color patterns in sequence. After each printing, they enter the dryer for drying. There is only one printing machine in front of each dryer, and the printing efficiency is still relatively low. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned problems and provide a dual-machine multi-color printing press, which can greatly improve the printing efficiency of printed materials, thereby improving the production efficiency of printed materials and improving economic benefits.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] A dual-machine multi-color printing machine includes multiple groups of screen printing modules, which are arranged along the X-axis direction; each group of screen printing modules includes two screen printing devices and a dryer that are arranged side by side and symmetrically along the Y-axis direction, and each screen printing device includes a printing machine; in the X-axis direction, the dryer is located downstream of the screen printing device.

[0007] The working principle of the above-mentioned double-machine multi-color printing press is:

[0008] The X-axis direction is the assembly line direction. Multiple groups of screen printing modules can perform multi-color printing and drying. One group of screen printing modules corresponds to one color. The two printers of each group of screen printing modules print one color at the same time. When working, the two printers of the first group of screen printing modules (the group located at the front) respectively print the first color on two printed products. After printing, the printed products are transported downstream from the printing machine to the drying machine of the first group of screen printing modules for drying. After drying, the two printed products are respectively transported downstream to the two printing machines of the second group of screen printing modules for second color printing; after printing, the printed products are transported downstream from the printing machine to the drying machine of the second group of screen printing modules for drying, and so on to complete printing of all colors.

[0009] A preferred solution of the present invention is that a transition conveying device for conveying printed materials is provided between the discharge port of each printing machine and the feed port of each drying machine, and between the discharge port of each drying machine and the feed port of each printing machine. Since two printing machines are arranged in parallel, the two printing machines work at the same time and share a dryer, so that the positions of the discharge port of the printing machine and the feed port of the dryer do not correspond, it is necessary to provide a transition conveying device for conveying. By providing the transition conveying device, printed materials can be conveyed from the discharge port of the printing machine to the feed port of the drying machine, and from the discharge port of the drying machine to the feed port of the printing machine, thereby improving production efficiency.

[0010] Preferably, each screen printing device further comprises a positioning device, a first conveying device and a second conveying device; the positioning device is arranged upstream of the printing press for positioning the printed product; the transition conveying device located downstream of the dryer is arranged upstream of the positioning device; the first conveying device is used to convey the printed product in the positioning device to the printing press and to convey the printed product in the transition conveying device located downstream of the dryer to the positioning device; the second conveying device is used to convey the printed product in the printing press to the transition conveying device. During operation, after the positioning device positions the printed product in the X-axis direction and the Y-axis direction, the positioned printed product is conveyed to the printing platform of the printing press by the first conveying device, and the printing press prints the printed product. After printing, the second conveying device conveys the printed product to the transition conveying device, and the printed product is conveyed to the dryer by the transition conveying device. After the drying of the dryer is completed, the printed product is conveyed to the position corresponding to the feed port of the positioning device by the transition conveying device, and the printed product is conveyed to the positioning device by the first conveying device, and then the positioned printed product is conveyed to the printing platform of the printing press by the first conveying device, and so on, to realize multi-color printing and drying operations.

[0011] Preferably, the two transition conveying devices between the screen printing module and the dryer are symmetrically arranged. That is, the two transition conveying devices between the discharge port of the screen printing module and the feed port of the dryer are symmetrically arranged, and the two transition conveying devices between the discharge port of the dryer and the feed port of the screen printing module are symmetrically arranged. Since each group of screen printing modules has two screen printing devices arranged in parallel and symmetrically, the two transition conveying devices are symmetrically arranged, the movements are symmetrical, the structure is more compact, and the production efficiency can be improved.

[0012] Preferably, the transition conveying device comprises a transition conveying frame, a conveying module arranged on the transition conveying frame, and a positioning and transporting module; wherein,

[0013] The conveying module is used to convey the printed matter along the X-axis direction;

[0014] The alignment, positioning and transport module is used to align and position the printed materials on the conveying module in the Y-axis direction and to transport the printed materials on the conveying module along the Y-axis direction; the alignment, positioning and transport module includes an alignment transport mechanism and a Y-axis driving mechanism for driving the alignment transport mechanism to move along the Y-axis direction; the alignment transport mechanism includes an alignment plate for aligning the printed materials, an adsorption component for adsorbing the printed materials and a lifting drive component for driving the adsorption component to perform lifting and lowering movements. The working principle of the above-mentioned transition conveying device is as follows: the printed matter processed by the upstream processing device (printing machine or dryer) comes out from the discharge port of the upstream processing device and enters the conveying module; the conveying module stops conveying the printed matter after conveying it forward for a distance along the X-axis direction, and the Y-axis driving mechanism drives the striking and transporting mechanism to move along the Y-axis direction, and the striking plate gradually approaches the printed matter, and strikes and positions the printed matter so that the posture of the printed matter is corrected; then the lifting driving component drives the adsorption component to rise or fall (that is, move along the Z-axis direction, and the movement direction will be different depending on the position of the adsorption component). After the adsorption component comes into contact with the printed matter, it adsorbs the printed matter. , and then drives the printed product to rise a certain distance, and the printed product leaves the conveying module. The Y-axis driving mechanism drives the slapping and conveying mechanism to move along the Y-axis direction, driving the printed product to move until the printed product corresponds to the feed port of the downstream processing device (dryer or printing machine). The Y-axis driving mechanism stops driving, and then drives the adsorption component to descend through the lifting driving component, and the printed product falls onto the conveying module. The lifting driving component drives the adsorption component to descend or rise, so that the adsorption component leaves the printed product. The Y-axis driving mechanism drives the slapping and conveying mechanism to move along the Y-axis direction, so that the slapping plate is away from the printed product; the conveying module drives the printed product to be conveyed forward along the X-axis direction, and conveys the printed product to the feed port of the downstream processing device.

[0015] Preferably, the alignment positioning and handling module further comprises a mounting seat slidably arranged on the transition conveyor frame and a mounting plate arranged on the mounting seat; the alignment plate is arranged on one side of the mounting plate, and the lifting drive assembly is arranged on the other side of the mounting plate; the mounting seat is connected to the Y-axis driving mechanism. By setting the above structure, it is convenient to install the alignment plate and the lifting drive assembly, and the Y-axis driving mechanism drives the mounting seat to move, and then drives the mounting plate to move, so as to realize the synchronous movement of the alignment plate, the lifting drive assembly, and the adsorption assembly along the Y-axis direction.

[0016] Preferably, the conveying module comprises a plurality of conveying rollers, and the plurality of conveying rollers are arranged on the transition conveying frame along the X-axis direction. Through the rotation of the conveying rollers, the printed matter can be conveyed along the X-axis direction.

[0017] Preferably, the alignment plate is a rake-toothed alignment plate, which includes a plate body and a plurality of alignment teeth arranged on the plate body; the alignment teeth are located between two adjacent conveying rollers, the plurality of alignment teeth are arranged along the X-axis direction, and an avoidance groove for avoiding the conveying roller is provided between two adjacent alignment teeth. By setting the above structure, the alignment plate will not interfere with the conveying roller during the alignment process, and the structure can also be made more compact; during alignment, the alignment teeth align one side of the printed matter, so that the printed matter is aligned and positioned.

[0018] Preferably, the adsorption assembly includes a connecting plate and a plurality of suction cups arranged on the connecting plate, wherein the plurality of suction cups are arranged along the X-axis direction; the connecting plate is connected to the lifting drive assembly. By providing a plurality of suction cups, the stability of suction of the suction cups can be improved.

[0019] Preferably, the Y-axis drive mechanism, the connecting plate and the plate body are all arranged below the conveying module. The advantage of such an arrangement is that the entire transition conveying device becomes very compact. After the printed matter is positioned, the lifting drive assembly drives the adsorption assembly to rise, and after the adsorption assembly contacts the bottom of the printed matter, it adsorbs the printed matter, and then drives the printed matter to rise a certain distance, so that the printed matter is away from the conveying module; when the printed matter corresponds to the feed port of the downstream processing device, the adsorption assembly is driven down by the lifting drive assembly, and the printed matter falls onto the conveying module, the suction cup stops adsorption, and the lifting drive assembly drives the adsorption assembly to descend, so that the adsorption assembly leaves the printed matter.

[0020] Preferably, the spur teeth are arranged in one-to-one correspondence with the suction cups, so that the suction cups are located between the two conveying rollers, and the suction cups can avoid the conveying rollers when performing lifting movements.

[0021] Preferably, the two transition conveying devices located between the discharge port of the screen printing module and the feed port of the dryer have opposite snapping directions, and the two transition conveying devices snap outward; the two transition conveying devices located between the discharge port of the dryer and the feed port of the screen printing module have opposite snapping directions, and the two transition conveying devices snap inward.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The dual-machine multi-color printing machine in the present invention has each group of screen printing modules with two parallel and symmetrically arranged screen printing devices and a dryer, that is, by arranging two printing machines in parallel for each color, the two printing machines work at the same time and share a dryer, which can not only improve the printing efficiency of printed products, thereby improving the production efficiency of printed products, but also reduce the investment in dryers, thereby reducing costs and improving economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The figure is a top view of a dual-machine multi-color printing press in the present invention.

[0025] Figure 2 It is a three-dimensional structural schematic diagram of a dual-machine multi-color printing machine in the present invention.

[0026] Figure 3 It is a schematic diagram of the three-dimensional structure of the first group of screen printing modules in the present invention.

[0027] Figure 4 It is a schematic diagram of the three-dimensional structure of the screen printing equipment in the present invention.

[0028] Figure 5 It is a schematic diagram of the three-dimensional structure of the first specific implementation mode of the transition conveying device in the present invention.

[0029] Figure 6 It is a schematic structural diagram of a transition conveying device in the present invention located between a material outlet of a printing press and a material inlet of a drying machine.

[0030] Figure 7 It is a structural schematic diagram of the transition conveying device in the present invention being located between the discharge port of the dryer and the feed port of the positioning device.

[0031] Figure 8 It is a schematic diagram of the three-dimensional structure of the first transport device or the second transport device in the present invention.

[0032] Fig. 9 It is a schematic diagram of the three-dimensional structure of the positioning device in the present invention.

[0033] Fig.10 This is a schematic diagram of the three-dimensional structure of the transition conveying device in the present invention without part of the transition conveying frame.

[0034] Fig.11 It is a schematic diagram of the three-dimensional structure of the transition conveying device in the present invention in another viewing direction with part of the frame omitted.

[0035] Fig.12 It is a schematic diagram of the three-dimensional structure of the positioning and transporting module in the present invention.

[0036] Fig.13 It is a side view of the positioning and transporting module in the present invention.

[0037] Fig.14 It is a schematic diagram of the three-dimensional structure of the slapping and transporting mechanism in the present invention.

[0038] Fig.15 It is a side view of the slapping and transporting mechanism in the present invention.

[0039] Fig.16 It is a schematic diagram of the three-dimensional structure of the slap board in the present invention.

[0040] Fig.17 This is a schematic diagram of the three-dimensional structure of the positioning and handling module in the second specific implementation manner of the transition conveying device in the present invention. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described below in conjunction with embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0042] Example 1

[0043] See also Figure 1-Figure 7 This embodiment discloses a dual-machine multi-color printing machine, including multiple groups of screen printing modules, which are arranged along the X-axis direction; each group of screen printing modules includes two screen printing devices arranged in parallel and symmetrically along the Y-axis direction and a dryer 2, and each screen printing device includes a printing machine 2; in the X-axis direction, the dryer 2 is located downstream of the screen printing device. In the above structure, two printing machines 2 are arranged in parallel and symmetrically for each color, and there are multiple groups of screen printing modules along the assembly line direction (X-axis direction), each group of screen printing modules has two printing machines 2, and one group of screen printing modules corresponds to one color, so as to realize multi-color printing and improve efficiency. Multiple groups of screen printing modules are spliced ​​to achieve a multi-color overprinting process.

[0044] See also Figure 1-Figure 7 and Fig.10A transition conveying device 3 for conveying printed matter 3-3 is provided between the discharge port of each printing machine 2 and the feed port of each drying machine 2, and between the discharge port of each drying machine 2 and the feed port of each printing machine 2. Since two printing machines 2 are arranged in parallel, the two printing machines 2 work at the same time and share one drying machine 2, so that the discharge port of the printing machine 2 and the feed port of the drying machine 2 do not correspond to each other, it is necessary to set a transition conveying device 3 for conveying. The transition conveying devices 3 are also arranged in parallel. By setting the transition conveying device 3, the printed matter 3-3 can be conveyed from the discharge port of the printing machine 2 to the feed port of the drying machine 2, and the printed matter 3-3 can be conveyed from the discharge port of the drying machine 2 to the feed port of the printing machine 2, thereby improving production efficiency. When the dryer 2 dries and conveys the printed matter 3-3, it has two rows of conveying channels, corresponding to the two rows of printed matter 3-3 for conveying. The printed matter 3-3 of one printing machine 2 is conveyed to one row of conveying channels corresponding to the dryer 2 through the transition conveying device 3, and the printed matter 3-3 of the printing machine 2 parallel to the printing machine 2 is conveyed to the other row of conveying channels corresponding to the dryer 2 through another transition conveying device 3. The dual-machine multi-color printing machine has two lines processed together, which can improve the drying efficiency and production efficiency. The two rows of conveying channels are interconnected and use the same conveying line.

[0045] See also Figure 1-Figure 10 Each screen printing device also includes a positioning device 4, a first conveying device 5 and a second conveying device 6; the positioning device 4 is arranged upstream of the printing machine 2 for positioning the printed product 3-3; the transition conveying device 3 located downstream of the dryer 2 is arranged upstream of the positioning device 4, that is, the second and subsequent screen printing modules, the transition conveying device 3 is arranged between the dryer 2 and the positioning device 4; the first conveying device 5 is used to convey the printed product 3-3 in the positioning device 4 to the printing machine 2 and to convey the printed product 3-3 in the transition conveying device 3 located downstream of the dryer 2 to the positioning device 4; the second conveying device 6 is used to convey the printed product 3-3 in the printing machine 2 to the transition conveying device 3. During operation, after the positioning device 4 positions the printed matter 3-3 in the X-axis direction and the Y-axis direction, the positioned printed matter 3-3 is transported to the printing platform of the printing machine 2 by the first transport device 5, and the printing machine 2 prints the printed matter 3-3. After printing is completed, the second transport device 6 transports the printed matter 3-3 to the transition conveying device 3, and the printed matter 3-3 is transported to the dryer 2 by the transition conveying device 3. After the dryer 2 completes drying, the printed matter 3-3 is transported to the position corresponding to the feed port of the positioning device 4 by the transition conveying device 3, and the printed matter 3-3 is transported to the positioning device 4 by the first transport device 5, and then the positioned printed matter 3-3 is transported to the printing platform of the printing machine 2 by the first transport device 5, and so on, to realize multi-color printing and drying operations.

[0046] See also Figure 1-Figure 10 The positioning device 4 includes four positioning members, which are arranged opposite to each other in pairs. Two positioning members are arranged in the X-axis direction, and two positioning members are arranged in the Y-axis direction. One of the positioning members in the X-axis direction can be stationary, that is, fixed, and the other three positioning members can move to achieve the four-side positioning of the printed matter 3-3, that is, positioning in the X-axis direction and the Y-axis direction.

[0047] See also Figure 1-Figure 10 The first transport device 5 and the second transport device 6 both use a suction cup assembly combined with a vertical transport drive mechanism and a Y-axis transport drive mechanism to transport the printed matter 3-3. The suction cup assembly can absorb the printed matter 3-3, and the suction cup assembly can move up and down under the drive of the vertical transport drive mechanism, and the Y-axis transport drive mechanism can drive the suction cup assembly to move in the Y-axis direction.

[0048] See also Figure 1-Figure 10 , the two transition conveying devices 3 between the screen printing module and the dryer 2 are symmetrically arranged. That is, the two transition conveying devices 3 between the discharge port of the screen printing module and the feed port of the dryer 2 are symmetrically arranged, and the two transition conveying devices 3 between the discharge port of the dryer 2 and the feed port of the screen printing module are symmetrically arranged. Since each group of screen printing modules has two screen printing devices arranged in parallel and symmetrically, the two transition conveying devices 3 are symmetrically arranged, the movements are symmetrical, the structure is more compact, and the production efficiency can be improved.

[0049] See also Figure 3 , Figure 5-Figure 7 and Figure 10-11 The transition conveying device 3 includes a transition conveying frame 3-1, a conveying module 3-2 arranged on the transition conveying frame 3-1, and a positioning and transporting module.

[0050] See also Figure 3 , Figure 5-Figure 7 and Figure 10-11 The conveying module 3-2 is used to convey the printed matter 3-3 along the X-axis direction; the conveying module 3-2 includes a plurality of conveying rollers 3-2-1, and the plurality of conveying rollers 3-2-1 are arranged along the X-axis direction on the transition conveying frame 3-1. The printed matter 3-3 can be conveyed along the X-axis direction by the rotation of the conveying rollers 3-2-1.

[0051] See also Figure 3 , Figure 5-Figure 7 and Figure 10-15The alignment, positioning and transport module is used to align and position the printed matter 3-3 on the conveying module 3-2 in the Y-axis direction and to transport the printed matter 3-3 on the conveying module 3-2 along the Y-axis direction; the alignment, positioning and transport module includes an alignment transport mechanism 3-4 and a Y-axis driving mechanism 3-5 for driving the alignment transport mechanism 3-4 to move along the Y-axis direction; the alignment transport mechanism 3-4 includes an alignment plate 3-4-1 for aligning the printed matter 3-3, an adsorption component 3-4-2 for adsorbing the printed matter 3-3 and a lifting driving component 3-4-3 for driving the adsorption component 3-4-2 to perform lifting and lowering movements. The working principle of the above-mentioned transition conveying device 3 is as follows: the printed matter 3-3 processed by the upstream processing device (screen printing equipment or dryer 2) comes out from the discharge port of the upstream processing device and enters the conveying module 3-2; the conveying module 3-2 conveys the printed matter 3-3 forward along the X-axis direction for a distance, then stops conveying, and the Y-axis driving mechanism 3-5 drives the slapping conveying mechanism 3-4 to move along the Y-axis direction (in this embodiment, the slapping conveying mechanism 3-4 is driven along the Y-axis direction and away from the feed port of the downstream processing device). The slapping plate 3-4-1 gradually approaches the printed product 3-3, and slaps and positions the printed product 3-3, so that the printed product 3-3 is in the correct position; then the lifting drive component 3-4-3 drives the adsorption component 3-4-2 to rise (i.e., moves along the Z-axis direction), and after the adsorption component 3-4-2 comes into contact with the printed product 3-3, it adsorbs the printed product 3-3, and then drives the printed product 3-3 to rise a certain distance, and the printed product 3-3 leaves the conveying module 3-2, and the Y-axis drive mechanism 3-5 drives the slapping and conveying. The mechanism 3-4 moves in the opposite direction along the Y-axis direction (driving the positive conveying mechanism 3-4 to move along the Y-axis direction and close to the feed port of the downstream processing device), driving the printed product 3-3 to move until the printed product 3-3 corresponds to the feed port of the downstream processing device (dryer 2 or screen printing equipment), the Y-axis driving mechanism 3-5 stops driving, and then drives the adsorption component 3-4-2 to descend through the lifting driving component 3-4-3, and the printed product 3-3 falls on the conveying module 3-2. After the adsorption stops, the lifting driving component 3-4-3 The adsorption component 3-4-2 is driven to descend, so that the adsorption component 3-4-2 leaves the printed matter 3-3, and the Y-axis driving mechanism 3-5 drives the squaring and conveying mechanism 3-4 to move in the opposite direction along the Y-axis direction, so that the squaring plate 3-4-1 is away from the printed matter 3-3, or the Y-axis driving mechanism 3-5 does not work, and the squaring plate 3-4-1 does not need to be away from the printed matter 3-3, and can also play a conveying and guiding role; the conveying module 3-2 drives the printed matter 3-3 to be conveyed forward along the X-axis direction, and conveys the printed matter 3-3 to the feed port of the downstream processing device.

[0052] See also Figure 3 , Figure 5-Figure 7 and Figure 10-15The alignment positioning and transport module also includes a mounting seat 3-4-4 that is slidably arranged on the transition conveyor frame 3-1 and a mounting plate 3-4-5 that is arranged on the mounting seat 3-4-4; the alignment plate 3-4-1 is arranged on one side of the mounting plate 3-4-5, and the lifting drive component 3-4-3 is arranged on the other side of the mounting plate 3-4-5; the mounting seat 3-4-4 is connected to the Y-axis driving mechanism 3-5. By setting the above structure, it is convenient to install the alignment plate 3-4-1 and the lifting drive component 3-4-3, and the mounting seat 3-4-4 is driven to move by the Y-axis driving mechanism 3-5, and then the mounting plate 3-4-5 is driven to move, so as to realize the synchronous movement of the alignment plate 3-4-1, the lifting drive component 3-4-3, and the adsorption component 3-4-2 along the Y-axis direction.

[0053] See also Fig.10 and Fig.16 The squaring plate 3-4-1 is a rake-tooth squaring plate, which includes a plate body 3-4-11 and a plurality of squaring teeth 3-4-12 arranged on the plate body 3-4-11; the squaring teeth 3-4-12 are located between two adjacent conveying rollers 3-2-1, and the plurality of squaring teeth 3-4-12 are arranged along the X-axis direction, and an avoidance groove 3-4-13 for avoiding the conveying roller 3-2-1 is provided between two adjacent squaring teeth 3-4-12. By setting the above structure, the squaring plate 3-4-1 will not interfere with the conveying roller 3-2-1 during the squaring process, and the structure can also be made more compact; during the squaring process, the squaring teeth 3-4-12 squaring one side of the printed matter 3-3, so that the printed matter 3-3 is aligned and positioned.

[0054] See also Figure 3 , Figure 5-Figure 7 and Figure 10-15 The adsorption component 3-4-2 includes a connecting plate 3-4-21 and a plurality of suction cups 3-4-22 arranged on the connecting plate 3-4-21, and the plurality of suction cups 3-4-22 are arranged along the X-axis direction; the connecting plate 3-4-21 is connected to the lifting drive component 3-4-3. By providing a plurality of suction cups 3-4-22, the adsorption stability of the suction cups 3-4-22 can be improved.

[0055] See also Figure 3 , Figure 5-Figure 7 and Figure 10-13, the Y-axis drive mechanism 3-5, the connecting plate 3-4-21 and the plate body 3-4-11 are all arranged below the conveying module 3-2. The advantage of such an arrangement is that the entire transition conveying device 3 becomes very compact and the layout of the entire production line is more reasonable. After the printed product 3-3 is positioned, the lifting drive component 3-4-3 drives the adsorption component 3-4-2 to rise, and the adsorption component 3-4-2 contacts the bottom of the printed product 3-3, adsorbs the printed product 3-3, and then drives the printed product 3-3 to rise a certain distance, so that the printed product 3-3 is away from the conveying module 3-2; when the printed product 3-3 corresponds to the feed port of the downstream processing device, the adsorption component 3-4-2 is driven to descend by the lifting drive component 3-4-3, and the printed product 3-3 falls on the conveying module 3-2, the suction cup stops adsorption, and the lifting drive component 3-4-3 drives the adsorption component 3-4-2 to descend, so that the adsorption component 3-4-2 leaves the printed product 3-3.

[0056] See also Figure 13-Figure 16 The said spur teeth 3-4-12 are arranged in one-to-one correspondence with the suction cups 3-4-22. The purpose is to make the suction cups 3-4-22 located between the two conveying rollers 3-2-1, so that the suction cups 3-4-22 can avoid the conveying rollers 3-2-1 when performing lifting and lowering movements. The number of spur teeth 3-4-12 is 7, and the number of avoidance grooves 3-4-13 is 6.

[0057] See also Figure 3 , Figure 5-Figure 7 and Figure 10-15 The lifting drive component 3-4-3 is a lifting cylinder, one end of which is connected to the connecting plate 3-4-21, and the other end of which is connected to the mounting plate 3-4-5. The lifting and lowering movement of the adsorption component 3-4-2 is achieved through the telescopic movement of the lifting cylinder, which makes the structure simpler and saves costs.

[0058] See also Figure 12-13 A guide assembly is provided between the transition conveyor frame 3-1 and the mounting seat 3-4-4. The guide assembly includes a guide rod 3-8 provided on the transition conveyor frame 3-1 and a slider 3-9 provided on the mounting seat 3-4-4. The slider 3-9 cooperates with the guide rod 3-8.

[0059] See also Figure 5 and Figure 12-14 The conveying module 3-2 is provided with a guide plate 3-10 near the feed inlet of the downstream processing device, and the guide plate 3-10 is used to guide the printed matter 3-3 into the feed inlet of the downstream processing device; the side of the conveying module 3-2 (the side close to the suction cup 3-4-22) is provided with a positioning baffle, and the two opposite sides of the printed matter 3-3 can be positioned in the Y-axis through the slapping plate 3-4-1 and the positioning baffle to improve the positioning accuracy.

[0060] See also Figure 5 and Figure 12-14 A mounting rod 3-12 is installed on the transition conveyor frame 3-1, and the mounting rod 3-12 is arranged parallel to the Y-axis direction. A plurality of photoelectric sensors 3-13 are arranged on the mounting rod 3-12, and a baffle 3-14 is provided on the mounting seat 3-4-4. A switch control signal can be generated by passing the baffle 3-14 through the photoelectric sensor 3-13, thereby realizing the precise movement of the slapping conveying mechanism 3-4.

[0061] See also Figure 1-Figure 13 , the two transition conveying devices 3 located between the discharge port of the screen printing module and the feed port of the dryer 2 have opposite slapping directions and opposite conveying directions. The two transition conveying devices 3 slap outwards and convey inwards; the two transition conveying devices 3 located between the discharge port of the dryer 2 and the feed port of the screen printing module have opposite slapping directions and opposite conveying directions. The two transition conveying devices 3 slap inwards and convey outwards. Taking the central symmetry line of the two screen printing devices as the reference, the direction close to the central symmetry line is inward, and the direction away from the central symmetry line is outward. Both inward and outward are directions on the Y axis.

[0062] See also Figure 1-Figure 7 The working principle of the above-mentioned dual-machine multi-color printing press is:

[0063] The X-axis direction is the direction of the assembly line. The number of screen printing modules can be configured according to actual production needs. Multiple groups of screen printing modules can perform multi-color printing and drying. One group of screen printing modules corresponds to one color. The two printing machines 2 of each group of screen printing modules print one color at the same time. When working, the two printing machines 2 of the first group of screen printing modules (the group located at the front) respectively print the first color on two printed products 3-3. After printing, the printed products 3-3 are transported downstream from the printing machine 2 to the drying machine 2 of the first group of screen printing modules for drying. After drying, the two printed products 3-3 are respectively transported downstream to the two printing machines 2 of the second group of screen printing modules for second color printing; after printing, the printed products 3-3 are transported downstream from the printing machine 2 to the drying machine 2 of the second group of screen printing modules for drying, and so on to complete printing of all colors.

[0064] Example 2

[0065] See also Fig.17, the other structures in this embodiment are the same as those in Embodiment 1, except that the Y-axis drive mechanism 3-5, the connecting plate 3-4-21 and the plate body 3-4-11 are all arranged above the conveying module 3-2. Similarly, the mounting seat 3-4-4 and the mounting plate 3-4-5 are also located above the conveying module 3-2. After the printed product 3-3 is positioned, the lifting drive component 3-4-3 drives the adsorption component 3-4-2 to descend. After the adsorption component 3-4-2 contacts the top of the printed product 3-3, it adsorbs the printed product 3-3 and then drives the printed product 3-3 to rise a certain distance, so that the printed product 3-3 is away from the conveying module 3-2. When the printed product 3-3 corresponds to the feed port of the downstream processing device, the adsorption component 3-4-2 is driven to descend by the lifting drive component 3-4-3, and the printed product 3-3 falls onto the conveying module 3-2. The suction cup stops adsorption, and the lifting drive component 3-4-3 drives the adsorption component 3-4-2 to rise, so that the adsorption component 3-4-2 leaves the printed product 3-3.

[0066] The above is a preferred embodiment of the present invention, but the embodiment of the present invention is not limited to the above content. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A dual-machine multi-color printing press, characterized in that: It includes multiple groups of screen printing modules, which are arranged along the X-axis direction; each group of screen printing modules includes two screen printing devices arranged side by side and symmetrically along the Y-axis direction and a dryer, and each screen printing device includes a printing machine; in the X-axis direction, the dryer is located downstream of the screen printing device.

2. A dual-machine multi-color printing press according to claim 1, characterized in that: A transition conveying device for conveying printed products is provided between the discharge port of each printing machine and the feed port of each drying machine, and between the discharge port of each drying machine and the feed port of each printing machine.

3. A dual-machine multi-color printing press according to claim 2, characterized in that: Each screen printing device also includes a positioning device, a first conveying device and a second conveying device; the positioning device is arranged upstream of the printing press to position the printed product; the transition conveying device located downstream of the dryer is arranged upstream of the positioning device; the first conveying device is used to convey the printed product in the positioning device to the printing press and to convey the printed product in the transition conveying device located downstream of the dryer to the positioning device; the second conveying device is used to convey the printed product in the printing press to the transition conveying device.

4. A dual-machine multi-color printing press according to claim 2, characterized in that: The two transition conveying devices located between the screen printing module and the dryer are symmetrically arranged.

5. A dual-machine multi-color printing press according to claim 2, characterized in that: The transition conveying device comprises a transition conveying frame, a conveying module arranged on the transition conveying frame, and a positioning and transporting module; wherein, The conveying module is used to convey the printed matter along the X-axis direction; The alignment, positioning and transport module is used to align and position the printed materials on the conveying module in the Y-axis direction and to transport the printed materials on the conveying module along the Y-axis direction; the alignment, positioning and transport module includes an alignment transport mechanism and a Y-axis driving mechanism for driving the alignment transport mechanism to move along the Y-axis direction; the alignment transport mechanism includes an alignment plate for aligning the printed materials, an adsorption component for adsorbing the printed materials and a lifting drive component for driving the adsorption component to perform lifting and lowering movements.

6. A dual-machine multi-color printing press according to claim 5, characterized in that: The alignment, positioning and transport module also includes a mounting seat slidably arranged on the transition conveyor frame and a mounting plate arranged on the mounting seat; the alignment plate is arranged on one side of the mounting plate, and the lifting drive assembly is arranged on the other side of the mounting plate; the mounting seat is connected to the Y-axis drive mechanism.

7. A dual-machine multi-color printing press according to claim 5, characterized in that: The conveying module includes a plurality of conveying rollers, and the plurality of conveying rollers are arranged along the X-axis direction on the transition conveying frame; The squaring plate is a rake-tooth squaring plate, which includes a plate body and a plurality of squaring teeth arranged on the plate body; the squaring teeth are located between two adjacent conveying rollers, the plurality of squaring teeth are arranged along the X-axis direction, and an avoidance groove for avoiding the conveying roller is provided between two adjacent squaring teeth.

8. A dual-machine multi-color printing press according to claim 7, characterized in that: The adsorption assembly includes a connecting plate and a plurality of suction cups arranged on the connecting plate, and the plurality of suction cups are arranged along the X-axis direction; the connecting plate is connected to the lifting drive assembly.

9. A dual-machine multi-color printing press according to claim 8, characterized in that: The Y-axis driving mechanism, the connecting plate and the plate body are all arranged below the conveying module.

10. A dual-machine multi-color printing press according to claim 8, characterized in that: The swivel teeth and the suction cups are arranged in one-to-one correspondence.

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