Printing mechanism and method

Abstract

The invention relates to a printing mechanism and method, and belongs to the field of printing, the printing mechanism is used for printing materials in a material tray, the printing mechanism comprises a material tray fixing table, a printing conveying line, a silk-screen printing device and a UV printing device, and the silk-screen printing device and the UV printing device are sequentially arranged in the conveying direction of the printing conveying line; the printing conveying line is connected with a first lifting device, the first lifting device is constructed to be suitable for driving the printing conveying line to descend so that material trays on the printing conveying line can be placed on the material tray fixing table, and the material tray fixing table is constructed to bear and fix the material trays. Therefore, the silk-screen printing device can print the materials in the material tray in the fixed state. According to the printing mechanism, automatic printing after feeding of the vamps is achieved, the printing speed is high, the printing efficiency is high, the material disc fixing table is provided with the multiple positioning devices, accurate positioning of the vamps in the printing process is achieved, and the printing quality is guaranteed.

Description

Technical Field

[0001] This application relates to the field of printing, and in particular to a printing mechanism and method. Background Technology

[0002] In the footwear industry, shoe upper printing is a key process for enhancing product design and achieving brand differentiation. Traditional plate printing relies on manual operation, which has drawbacks such as low production efficiency (30-50 pairs / hour), poor alignment accuracy (±1-2mm), inconsistent quality and personnel, large footprint, and the inability to recycle and treat VOC emissions.

[0003] Although existing automatic printing presses have automated some processes, the critical ink printing still requires manual operation, and the alignment accuracy is insufficient (±0.5-1mm), which easily leads to poor quality and makes it difficult to meet the market's demand for personalized and high-precision footwear. Summary of the Invention

[0004] To achieve automatic printing on shoe uppers, this application provides a printing mechanism and method.

[0005] In one aspect of this disclosure, a printing mechanism is provided for printing materials in a material tray, comprising a material tray fixing table, a printing conveyor line, and a screen printing device and a UV printing device arranged sequentially along the conveying direction of the printing conveyor line. The printing conveyor line is configured to convey the material tray, and a lifting device is connected to the printing conveyor line. The lifting device is configured to drive the printing conveyor line down to place the material tray on the printing conveyor line onto the material tray fixing table. The material tray fixing table is configured to support and fix the material tray so that the screen printing device can print the material in the fixed material tray. The UV printing device is configured to perform UV printing on the printed material.

[0006] By adopting the above technical solution, automatic printing of shoe uppers after material is received is achieved, with fast printing speed and high efficiency.

[0007] Preferably, the tray fixing platform includes: Mounting bracket, on which a negative pressure box is fixedly mounted, the upper surface of the negative pressure box is constructed of a perforated plate, and the negative pressure box is connected to an air extraction pipe; A limiting device is installed on the conveying path of the printing conveyor line and is fixedly connected to the mounting frame. The limiting device is configured to prevent the material tray from being conveyed further when it is conveyed to the top of the perforated plate. Multiple positioning devices are mounted on a mounting frame and distributed around the perforated plate to position the material tray after it has been placed on the perforated plate.

[0008] By adopting the above technical solution, the entire process realizes automatic printing after the shoe upper material is received. The printing speed is fast and the efficiency is high. Moreover, the material tray fixing table has multiple positioning devices to achieve precise positioning of the shoe upper during the printing process and ensure printing quality.

[0009] Preferably, the positioning device includes: A fixed positioning component and a movable positioning component 1 are located in the north-south direction of the perforated plate. The fixed positioning component is fixedly connected to the mounting frame. The movable positioning component 1 is connected to a transverse moving device 3. The transverse moving device 3 is configured to drive the movable positioning component 1 to move in the north-south direction. The transverse moving device 3 is fixedly connected to the mounting frame. The perforated plate has a lifting positioning component and a movable positioning component two located in the east-west direction. The lifting positioning component is fixedly connected to the mounting frame. The movable positioning component two is connected to a transverse moving device four. The transverse moving device four is configured to drive the movable positioning component two to move in the east-west direction. The transverse moving device four is fixedly connected to the mounting frame.

[0010] By adopting the above technical solution, precise positioning of the material tray can be achieved, ensuring printing quality.

[0011] Preferably, the transverse movement device three is connected to a lifting component two, which drives the transverse movement device three to rise and fall. The lifting component two is fixedly connected to the mounting frame.

[0012] By adopting the above technical solution, collisions between the screen printing device and the movable positioning component are avoided when the screen printing device descends to print the shoe upper material on the material tray.

[0013] Preferably, the lifting and positioning component is connected to a lifting component three, which drives the lifting and positioning component to rise and fall. The lifting component three is fixedly connected to the mounting frame. The transverse movement device four is connected to a lifting component four, which drives the transverse movement device four to rise and fall. The lifting component four is fixedly connected to the mounting frame.

[0014] By adopting the above technical solution, collisions between the screen printing device and the movable positioning component 2 and the lifting positioning component are avoided when the screen printing device descends to print the shoe upper material on the material tray.

[0015] Preferably, the fixed positioning component, movable positioning component one, movable positioning component two, and lifting positioning component are bearings or rollers.

[0016] By adopting the above technical solution, the contact wear between the fixed positioning component, movable positioning component one, movable positioning component two, lifting positioning component and material tray is reduced, and the service life is extended.

[0017] Preferably, the printing conveyor line includes a third feeding conveyor line and a fourth feeding conveyor line. The fourth feeding conveyor line is fixedly installed. The third feeding conveyor line is connected to a lifting device. The fourth feeding conveyor line is configured to receive the material tray conveyed by the third feeding conveyor line. The UV printing device is configured to perform UV printing on the material in the material tray on the fourth feeding conveyor line.

[0018] By adopting the above technical solutions, screen printing and UV printing can work independently without being affected by each other, which helps to improve printing efficiency.

[0019] Preferably, the lifting device includes a lifting component, a lifting frame, and a guide frame. The lifting component is fixedly installed, and the guide frame is fixedly connected to the lifting frame. The guide frame is also slidably connected to the mounting frame. The movable end of the lifting component is connected to the lifting frame, and the lifting frame is driven to rise and fall through the lifting component. The feeding conveyor line is installed on the lifting frame.

[0020] By adopting the above technical solution, the three lifting mechanisms of the feeding conveyor line can be made stable and orderly, without collision or interference with the fixed platform of the material tray.

[0021] Preferably, the printing mechanism also includes a machine housing, a material tray fixing table, a printing conveyor line, and a screen printing device and a UV printing device arranged sequentially along the conveying direction of the printing conveyor line, all of which are installed inside the machine housing, and the machine housing is equipped with an exhaust pipe.

[0022] Since VOCs are generated during the printing process, in order to prevent air pollution, the printing mechanism is completely enclosed by a chassis, and then an exhaust duct is installed on the chassis to remove the VOCs, thus preventing VOCs from escaping and polluting the air.

[0023] In another aspect of this disclosure, a printing method is provided, applied to the aforementioned printing facility, comprising: Material trays are conveyed via a printing conveyor line; When the material tray moves to the bottom of the screen printing device, the printing conveyor descends to fix the material tray to the tray fixing table, and then the screen printing device descends to print the material in the fixed material tray. After screen printing is completed, the printing conveyor line rises and resets, and moves the material tray to the printing position of the UV printing device for UV printing. After UV printing is completed, the printing conveyor line continues to transport the material trays.

[0024] Beneficial technical effects: The printing mechanism of this application uses a printing conveyor line to transport a material tray containing shoe upper material. When the material tray moves to the bottom of the screen printing device, the printing conveyor line descends, fixing the material tray to the tray fixing table. Then, the screen printing device descends to print on the material in the fixed tray. After the screen printing is completed, the printing conveyor line rises to reset and moves the material tray to the printing position of the UV printing device for UV printing. The entire process realizes automatic printing after the shoe upper material arrives, with fast printing speed and high efficiency. Moreover, the tray fixing table has multiple positioning devices to achieve precise positioning of the shoe upper during the printing process, ensuring printing quality. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a printing production line.

[0026] Figure 2 yes Figure 1 Internal structure diagram.

[0027] Figure 3 This is a schematic diagram of the material transfer mechanism and the loading trolley. Figure 1 .

[0028] Figure 4 This is a schematic diagram of the material transfer mechanism and the loading trolley. Figure 2 .

[0029] Figure 5 This is a schematic diagram of the feeding mechanism. Figure 1 .

[0030] Figure 6 This is a schematic diagram of the feeding mechanism. Figure 2 .

[0031] Figure 7 This is a schematic diagram of the feeding mechanism. Figure 3 .

[0032] Figure 8 This is a schematic diagram of the feeding mechanism.

[0033] Figure 9 This is a schematic diagram of the printing mechanism.

[0034] Figure 10 This is a schematic diagram of the material tray fixing platform. Figure 1 .

[0035] Figure 11 This is a schematic diagram of the material tray fixing platform. Figure 2 .

[0036] Figure 12 This is a schematic diagram of the material tray fixing platform. Figure 3 .

[0037] Explanation of reference numerals in the attached figures: 1. Material transfer mechanism one; 11. Transverse transfer device six; 12. Feeding push rod; 13. Frame one; 2. Loading trolley; 21. Material rack; 22. Cargo pallet 1; 23. AGV; 3. Feeding mechanism; 31. Material tray lifting device one; 32. Material tray lifting device two; 33. Lateral movement device one; 34. Feeding conveyor line one; 35. Return conveyor line three; 301. Frame 2; 302. Sprocket; 303. Chain; 304. Carrier plate 2; 305. Drive unit; 306. Horizontal moving device; 307. Transverse moving frame; 308. Telescopic device; 309. Transfer mechanism II; 310. Fan; 4. Printing mechanism; 41. Machine casing; 42. Exhaust duct; 43. Screen printing device; 44. UV printing device; 45. Feeding conveyor line two; 46. Feeding conveyor line three; 47. Feeding conveyor line four; 48. Return material conveyor line two; 49. Material tray fixing table; 401. Mounting bracket; 402. Lifting component one; 403. Lifting frame; 404. Limiting device; 405. Fixed positioning component; 406. Movable positioning component one; 407. Lateral movement device three; 408. Lifting component two; 409. Lifting positioning component; 410. Lifting component three; 411. Perforated plate; 412. Negative pressure box; 413. Air extraction pipe; 414. Bracket; 415. Guide frame; 416. Movable positioning component two; 5. Material tray; 6. Drying device; 7. Feeding mechanism. Detailed Implementation

[0038] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore detailed descriptions of them will be omitted. Furthermore, the drawings are merely illustrative of this disclosure and are not necessarily drawn to scale.

[0039] The following is in conjunction with the appendix Figures 1-12 This application will be described in further detail.

[0040] In one aspect of this disclosure, a printing production line is provided, such as Figure 1As shown, the printing production line includes: a material transfer mechanism 1, a loading cart 2, a loading mechanism 3, a printing mechanism 4, an unloading mechanism 7, and an unloading cart. Material transfer mechanism 1 transfers the material tray 5 from the loading cart 2 to the loading mechanism 3. The loading mechanism 3 then transfers the material tray 5 to the printing mechanism 4. After the printing mechanism 4 prints the shoe upper material in the material tray 5, the material tray 5 is transferred to the unloading mechanism 7 for unloading. Finally, the unloading mechanism 7 transfers the material tray 5 to the unloading cart for removal. In the entire printing production line, material transfer mechanism 1, loading cart 2, loading mechanism 3, printing mechanism 4, unloading mechanism 7, and unloading cart cooperate to achieve a fully automated printing process for shoe uppers, including automatic loading, automatic printing, and automatic unloading, resulting in high printing speed and efficiency.

[0041] Specifically, such as Figures 1-4 As shown, the material transfer mechanism 1 includes a frame 13 and a transverse transfer device 6 11 mounted on the frame 13. The movable end of the transverse transfer device 6 11 is connected to the feeding push rod 12.

[0042] like Figures 1-4 As shown, the loading trolley 2 has a material rack 21 and carrier plates 22 arranged on the material rack 21. The carrier plates 22 are arranged in a straight line from top to bottom, with adjacent carrier plates 22 spaced apart and parallel. The carrier plates 22 have two vertical columns, symmetrically arranged on the material rack 21. The material trays 5 for placing shoe upper materials are horizontally inserted and placed on the upper surfaces of the two equal-height carrier plates 22. Therefore, the loading trolley 2 can hold multiple layers of material trays 5 from top to bottom. The material trays 5 are horizontally slidably connected to the carrier plates 22. Figure 3 and Figure 4 As shown, the transverse movement device 611 moves the feeding push rod 12 to push all the multi-layer material trays 5 into the feeding mechanism 3 at once.

[0043] Furthermore, to facilitate the movement of the loading vehicle 2, an AGV 23 is installed at the bottom of the material rack 21, which enables the loading vehicle 2 to move autonomously.

[0044] The feeding mechanism 3 includes a feeding conveyor line 34 and a feeding tray lifting device. The feeding tray lifting device is close to the feeding car 2. The material transfer mechanism 1 is configured to drive the material tray 5 away from the feeding car 2 and into the feeding tray lifting device. The feeding tray lifting device is configured to move the material tray 5 to the feeding conveyor line 34.

[0045] Specifically, such as Figure 2As shown, the feeding tray lifting device includes a tray lifting device 1 31 and a tray lifting device 2 32. The feeding mechanism 3 also includes a transverse movement device 1 33, which is located at the top of the tray lifting devices 1 31 and 2 32. This transverse movement device 1 33 is used to move the material tray 5 away from the tray lifting device 1 31 and into the tray lifting device 2 32. When the tray lifting device 1 31 approaches the feeding trolley 2, the transverse movement device 1 11 pushes the feeding push rod 12 to move, pushing all the multi-layer material trays 5 into the tray lifting device 1 31 at once. After the tray lifting device 1 31 rises to the top, the transverse movement device 1 33 moves the material tray 5 away from the tray lifting device 1 31 and into the tray lifting device 2 32. Then, the tray lifting device 2 32 moves the material tray 5 downwards. Figure 7 As shown, the feeding conveyor line 34 is located in the material tray lifting device 32. The material tray lifting device 32 drives the material tray 5 to descend and place the material tray 5 on the feeding conveyor line 34. The feeding conveyor line 34 then sends the material tray 5 into the printing mechanism 4.

[0046] Of course, in other embodiments, the feeding mechanism 3 may consist only of a feeding conveyor line 34 and a feeding tray lifting device. In this case, the feeding tray lifting device is a tray lifting device 31, and the feeding conveyor line 34 is located in the tray lifting device 31. After the multi-layer material trays 5 enter the tray lifting device 31, the tray lifting device 31 drives the material trays 5 to descend, placing the material trays 5 one by one onto the feeding conveyor line 34.

[0047] Alternatively, the feeding mechanism 3 may consist of a feeding conveyor line 34, a tray lifting device 31, and a transverse movement device 33. After the multi-layer material tray 5 enters the tray lifting device 31, the tray lifting device 31 drives the material tray 5 to rise to the top. Finally, the transverse movement device 33 drives the material tray 5 to move horizontally away from the tray lifting device 31 and directly enter the feeding conveyor line 34.

[0048] Of course, in addition to directly placing the material trays 5 one by one onto the feeding conveyor line 34, the material tray lifting device 31 can also drive the material trays 5 to move horizontally away from the material tray lifting device 31 and directly enter the feeding conveyor line 34 with the help of the transverse moving device 33.

[0049] In this embodiment, the material tray lifting device 31 and the material tray lifting device 32 have the same structure, the only difference being that they drive the material tray 5 to descend at different positions. Figure 2 It can also be seen that the position where the material tray 5 is lowered by the material tray lifting device 1 31 is lower than the position where the material tray 5 is lowered by the material tray lifting device 2 32.

[0050] In this embodiment of the disclosure, the transverse movement device 33 is configured to drive the material tray 5 away from the feeding tray lifting device so that the material tray 5 is finally moved to the feeding conveyor line 34. This includes: the transverse movement device 33 driving the material tray 5 away from the tray lifting device 31 and into the tray lifting device 32, and the tray lifting device 32 placing the material tray 5 into the feeding conveyor line 34; or the transverse movement device 33 driving the material tray 5 to move horizontally away from the tray lifting device 31 and directly into the feeding conveyor line 34.

[0051] The following is a detailed description of the specific structure of the material tray lifting device 31, such as... Figures 5-7 As shown, the material tray lifting device 31 includes a frame 301, a sprocket 302, a chain 303, a tray plate 304, and a drive device 305. The sprocket 302 is rotatably mounted on the frame 301. Four sprockets 302 are provided on each of the front and rear sides of the frame 301. The four sprockets 302 are located at the upper, lower, left, and right ends of the front side of the frame 301. The chain 303 is sleeved on the upper and lower sprockets 302. The drive device 305 is mounted on the frame 301 and is connected to the sprockets 302 for transmission, so as to drive the sprockets 302 to rotate and drive the chain 303 to move.

[0052] like Figure 5 As shown, multiple carrier plates 304 are arranged at intervals on the outer side of the chain 303 along the length of the chain 303. With this design, when the carrier plates 304 on the left and right chains 303 move to face the other chain 303, the material tray 5 can be placed on the carrier plates 304 on the left and right chains 303. Therefore, the action of the transverse movement device 11 to push the feeding push rod 12 can push all the multi-layer material trays 5 into the material tray lifting device 31 at one time. Correspondingly, the transverse movement device 33 can also push the material tray 5 horizontally from the material tray lifting device 31 to the material tray lifting device 32.

[0053] like Figure 3 and Figure 5 As shown, the transverse movement device 33 includes a horizontal movement device 306, a transverse frame 307, and a telescopic device 308. The transverse frame 307 moves horizontally along the direction of the material tray lifting device 31 pointing to the material tray lifting device 32 under the drive of the horizontal movement device 306. Telescopic devices 308 are provided on both sides of the transverse frame 307. After the movable end of the lower part of the telescopic device 308 extends, the transverse frame 307 can move horizontally and push the material tray 5 to move horizontally on the carrier plate 304 with the help of the telescopic device 308. After the movable end of the lower part of the telescopic device 308 retracts, the transverse frame 307 can move horizontally in the opposite direction and drive the telescopic device 308 to reset.

[0054] The printing mechanism 4 includes a material tray fixing platform 49, a printing conveyor line, and a screen printing device 43 and a UV printing device 44 arranged sequentially along the conveying direction of the printing conveyor line. The inlet end of the printing conveyor line is close to the outlet end of the inlet conveyor line 34 to receive the material tray 5 conveyed by the inlet conveyor line 34. The printing conveyor line is connected to a lifting device 1, which is configured to drive the printing conveyor line down to place the material tray 5 on the printing conveyor line onto the material tray fixing platform 49. The material tray fixing platform 49 is configured to support and fix the material tray 5 so that the screen printing device 43 can print the material in the fixed material tray 5. The UV printing device 44 is configured to perform UV printing on the printed material.

[0055] Specifically, such as Figure 2 As shown, the printing mechanism 4 has a housing 41, a material tray fixing table 49, a printing conveyor line, and a screen printing device 43 and a UV printing device 44 arranged sequentially along the conveying direction of the printing conveyor line. All of these are installed inside the housing 41. Since VOCs are generated during the printing process, in order to prevent air pollution, the printing mechanism 4 is completely enclosed by the housing 41. Then, an exhaust pipe 42 is installed on the top of the housing 41 to remove the VOCs and prevent VOCs from escaping and polluting the air.

[0056] like Figure 9 As shown, the printing conveyor lines consist of feed conveyor line two 45, feed conveyor line three 46, and feed conveyor line four 47. Only feed conveyor line three 46 is connected to lifting device one, enabling it to be raised and lowered. The material tray 5 conveyed from feed conveyor line one 34 is sent to feed conveyor line three 46 via feed conveyor line two 45. The lifting device one lowers feed conveyor line three 46 to place the material tray 5 on the material tray fixing platform 49. The material tray fixing platform 49 is constructed to support and fix the material tray 5 so that the screen printing device 43 can print the material in the fixed material tray 5. After the screen printing is completed, feed conveyor line three 46 rises back to its original position and then conveys the material tray 5 to feed conveyor line four 47. The UV printing device 44 performs UV printing on the shoe upper material in the material tray 5 on feed conveyor line four 47.

[0057] Of course, in other embodiments, the printing conveyor line may consist only of feeding conveyor line three 46 and feeding conveyor line four 47. The material tray 5 conveyed by feeding conveyor line one 34 is directly sent to feeding conveyor line three 46. Feeding conveyor line three 46 is connected to lifting device one. Feeding conveyor line four 47 is configured to receive the material tray 5 conveyed by feeding conveyor line three 46. The UV printing device 44 is configured to perform UV printing on the material tray 5 on feeding conveyor line four 47.

[0058] The printing conveyor line includes at least two feed conveyor lines: 346 and 47. This design allows screen printing and UV printing to operate independently without being affected by each other, which helps improve printing efficiency.

[0059] It should be noted that the structure and working principle of the screen printing device 43 and the UV printing device 44 are common knowledge and will not be elaborated here.

[0060] like Figures 9-12 As shown, the lifting device includes a lifting component 402, a lifting frame 403, and a guide frame 415. The lifting component 402 is fixedly connected to the housing 41, and the guide frame 415 is fixedly connected to the lifting frame 403. The guide frame 415 is also slidably connected to the mounting frame 401. The movable end of the lifting component 402 is connected to the lifting frame 403, and the lifting frame 403 is lifted and lowered by the lifting component 402. The feeding conveyor line 46 is installed on the lifting frame 403.

[0061] like Figures 9-12 As shown, the material tray fixing platform 49 includes: a mounting frame 401, a limiting device 404, and multiple positioning devices. The mounting frame 401 is fixedly connected to the chassis 41. A bracket 414 is fixedly mounted on the mounting frame 401, and a negative pressure box 412 is fixedly mounted on the bracket 414. The upper surface of the negative pressure box 412 is constructed as a perforated plate 411. The negative pressure box 412 is connected to an air extraction pipe 413. By connecting the air extraction pipe 413 to a negative pressure device and activating the negative pressure device, a negative pressure is formed inside the negative pressure box 412, thereby tightly adsorbing the material tray 5 onto the upper surface of the perforated plate 411. This method of fixing and releasing the material tray 5 using negative pressure adsorption has the advantages of simple structure, fast action switching, fast response speed, and high efficiency.

[0062] like Figure 11 As shown, the limiting device 404 is located on the conveying path of the printing conveyor line and is fixedly connected to the mounting frame 401. The limiting device 404 is configured to prevent the material tray 5 from being conveyed further when it is conveyed directly above the perforated plate 411. Commonly, the limiting device 404 is a lifting component such as a cylinder, hydraulic cylinder, or linear motor.

[0063] Multiple positioning devices are installed on the mounting frame 401 and distributed around the perforated plate 411. They are used to accurately position the material tray 5 after it is placed on the perforated plate 411. After positioning, the material tray 5 is tightly adsorbed and fixed to the upper surface of the perforated plate 411 by the negative pressure adsorption. Then, the screen printing operation is performed. After the screen printing is completed, the negative pressure is first removed, and the adsorption and fixation of the material tray 5 also disappears. Then, the feeding conveyor line 3 46 rises and resets, and then the material tray 5 is transported to the feeding conveyor line 47. The UV printing device 44 performs UV printing on the shoe upper material in the material tray 5 on the feeding conveyor line 47.

[0064] Specifically, such as Figures 10-12 As shown, the positioning device includes: The fixed positioning component 405 and the movable positioning component 406 located in the north-south direction of the perforated plate 411, such as Figure 11 As shown, the fixing and positioning component 405 is fixedly connected to the mounting bracket 401, as follows: Figure 10 As shown, the movable positioning component 406 is connected to the transverse moving device 407. The transverse moving device 407 is configured to drive the movable positioning component 406 to move in the north-south direction. The transverse moving device 407 is connected to the lifting component 408. The lifting component 408 drives the transverse moving device 407 to rise and fall. The lifting component 408 is fixedly connected to the mounting frame 401. The lifting positioning component 409 and the movable positioning component 416 located in the east-west direction of the perforated plate 411, such as Figure 10 As shown, the lifting positioning component 409 is connected to the lifting component three 410, which is fixedly installed on the mounting frame 401. The lifting positioning component 409 is lifted and lowered by the lifting component three 410. The movable positioning component two 416 is connected to the transverse movement device four, which is configured to drive the movable positioning component two 416 to move in the east-west direction. The transverse movement device four is connected to the lifting component four, which is fixedly installed on the mounting frame 401. The lifting component four drives the transverse movement device four to lift and lower.

[0065] After the material tray 5 is placed on the perforated plate 411, the horizontal movement of the movable positioning component 1 406 and the movable positioning component 2 416 pushes the material tray 5 into contact with the fixed positioning component 405 and the lifting positioning component 409. Thus, the position of the material tray 5 is adjusted by the movable positioning component 1 406, the movable positioning component 2 416, the fixed positioning component 405, and the lifting positioning component 409 until its position is adjusted to the correct position, thereby achieving precise positioning of the material tray 5. Then, the negative pressure adsorption effect is used to firmly adsorb and fix the material tray 5 to the upper surface of the perforated plate 411.

[0066] After the material tray 5 is firmly attached to the upper surface of the perforated plate 411, the movable positioning component 1 406, movable positioning component 2 416, and lifting positioning component 409 are controlled to descend, so as to avoid collision between the upper screen printing device 43 and the movable positioning component 1 406, movable positioning component 2 416, and lifting positioning component 409 when the screen printing device 43 descends to print the shoe upper material on the material tray 5.

[0067] Of course, in other embodiments, the first movable positioning component 406, the second movable positioning component 416, and the lifting positioning component 409 can also be positioned at the same height as the negative pressure box 412 to eliminate the risk of collision. In this way, the positioning device does not need to be equipped with a lifting component to drive the first movable positioning component 406, the second movable positioning component 416, and the lifting positioning component 409 to move up and down.

[0068] In a specific embodiment, the fixed positioning component 405, the movable positioning component one 406, the movable positioning component two 416, and the lifting positioning component 409 can be bearings or rollers to reduce contact wear. The lifting components one to four can be cylinders, hydraulic cylinders, or linear motors.

[0069] The unloading mechanism 7 includes a material transfer mechanism 309 and a material tray lifting device. The material tray lifting device is located near the discharge end of the printing conveyor line to receive the material tray 5 transported by the printing conveyor line. The material transfer mechanism 309 is configured to drive the material tray 5 away from the material tray lifting device and into the unloading car.

[0070] In practice, the structure of the unloading tray lifting device can be the same as that of the loading tray lifting device, the structure of the transfer mechanism 2 309 can be the same as that of the transfer mechanism 1, and the structure of the unloading cart can be the same as that of the loading cart 2. Thus, the material tray 5 conveyed from the printing conveyor line enters the unloading tray lifting device, forming multiple layers of material trays 5 from top to bottom within it. Subsequently, the transfer mechanism 2 309 pushes all the multiple layers of material trays 5 away from the unloading tray lifting device at once and into the unloading cart, completing the unloading process.

[0071] Therefore, in the printing production line of this embodiment, the material transfer mechanism 1 transfers the material tray 5 in the loading carriage 2 to the loading mechanism 3, which then transfers the material tray 5 to the printing mechanism 4. After the printing mechanism 4 prints the shoe upper material in the material tray 5, the material tray 5 is transferred to the unloading mechanism 7 for unloading. Finally, the unloading mechanism 7 transfers the material tray 5 to the unloading carriage for delivery. In the entire printing production line, the material transfer mechanism 1, loading carriage 2, loading mechanism 3, printing mechanism 4, unloading mechanism 7, and unloading carriage cooperate with each other to realize a fully automatic printing process of automatic feeding, automatic printing, and automatic unloading of shoe uppers. The printing speed is fast and the efficiency is high. Moreover, multiple positioning devices are set up to achieve precise positioning of the shoe uppers during the printing process and ensure printing quality.

[0072] Furthermore, the unloading mechanism 7 also has a return conveyor line. The inlet end of the return conveyor line is close to the unloading tray lifting device, and the outlet end of the return conveyor line is close to the loading tray lifting device. The return conveyor line is configured to move the material tray 5 in the unloading tray lifting device to the loading tray lifting device. At this time, the transfer mechanism 309 and the unloading trolley are close to the loading tray lifting device. The transfer mechanism 309 is configured to move the material tray 5 away from the loading tray lifting device and into the unloading trolley.

[0073] By adopting the above technical solution, the material tray 5 in the unloading tray lifting device is moved back to the loading tray lifting device by the return material conveyor line, so that the unloading and loading are located in one place, which can reduce the working area of ​​the entire printing production line.

[0074] Preferably, the unloading trolley can be removed, and the loading trolley 2 takes over the function of the unloading trolley, such as... Figure 1 and Figure 2 As shown, at this time, the printing production line only has the loading cart 2. After the material to be printed in the loading cart 2 is pushed into the material tray lifting device 31 by the material transfer mechanism 1, the material transfer mechanism 2 309 pushes the printed material in the material tray lifting device 31 away into the loading cart 2.

[0075] Specifically, the recycling conveyor line includes Figure 9 The return material conveyor line 248 shown in the figure Figure 5 The return material conveyor line 35 shown in the figure has one end of the return material conveyor line 2 48 extending into the unloading tray lifting device, or the return material conveyor line 1 is set in the unloading tray lifting device to smoothly send the material tray 5 in the unloading tray lifting device away; the return material conveyor line 35 is located in the tray lifting device 1 31, and the material tray 5 on the return material conveyor line 35 is inserted between two adjacent upper and lower tray plates 2 304, so that the material tray 5 can be carried away by the tray lifting device 1 31, realizing that the material tray 5 forms a multi-layer material tray 5 from bottom to top on the tray lifting device 1 31. The subsequent material transfer mechanism 2 309 pushes all the multi-layer material trays 5 away from the tray lifting device 1 31 at once and enters the unloading car or loading car 2; the position and function of one end of the return material conveyor line 1 or the return material conveyor line 2 48 extending into the unloading tray lifting device are the same as the function of the return material conveyor line 35 in the loading tray lifting device.

[0076] It should be noted that the feeding mechanism 7 may also have a second transverse movement device. The structure and function of the second transverse movement device are the same as those of the first transverse movement device 33. The second transverse movement device is configured to drive the material tray 5 away from the feeding tray lifting device, so that the material tray 5 moves to the return conveyor line. Specifically, the second transverse movement device can drive the material tray 5 away from the feeding tray lifting device and move it directly to the return conveyor line, or it can drive the material tray 5 away from the second transverse movement device 32 and enter the first transverse movement device 31, where the first transverse movement device 31 moves the material tray 5 to the return conveyor line.

[0077] Furthermore, the printing production line also includes a drying device 6, which is located on the conveying path of the UV-printed material and is used to dry the material. For example... Figure 1 , Figure 2 and Figure 8 The drying device 6 shown is mounted on the material tray lifting device. This design accelerates the drying speed of the ink on the material and further improves the overall production efficiency of the printing production line.

[0078] To ensure the ink on the material is dried, when unloading from the feeding tray lifting device, if... Figure 5 As shown, a fan 310 is installed next to the material feeding tray lifting device. The fan 310 accelerates the drying speed of the ink on the material, ensuring that the shoe upper material is completely dried before feeding.

[0079] In this embodiment of the disclosure, Figure 1 The direction indicated by the middle arrow is the flow direction of the material tray 5 in the printing production line. Of course, if needed, a printing mechanism 4 can also be set up on the right side of the feeding mechanism 7 for secondary printing of the shoe upper.

[0080] In another aspect of this disclosure, a printing method is provided, applied to the aforementioned printing production line, comprising: S1. The material tray 5 in the loading car 2 is moved to the loading tray lifting device by the material transfer mechanism 1. The loading tray lifting device moves the material tray 5 to the feeding conveyor line 34. The feeding conveyor line 34 drives the material tray 5 to the printing conveyor line. S2. When the material tray 5 moves to the bottom of the screen printing device 43, the printing conveyor line descends to fix the material tray 5 to the material tray fixing table 49, and then the screen printing device 43 descends to print the material in the fixed material tray 5. S3. After the screen printing is completed, the printing conveyor line rises and resets, and drives the material tray 5 to move to the printing position of the UV printing device 44 for UV printing. S4. After UV printing is completed, the printing conveyor line moves the material tray 5 to the unloading tray lifting device. S5, the material transfer mechanism 2 309 drives the material tray 5 to leave the material tray lifting device and enter the material unloading vehicle.

[0081] Therefore, the printing method in this embodiment realizes a fully automated printing process, including automatic feeding, automatic printing, automatic unloading, and automatic drying of the shoe upper, with fast printing speed and high efficiency.

[0082] In another aspect of this disclosure, a printing method is provided, applied to the aforementioned printing production line, comprising: S1. The material tray 5 in the loading car 2 is moved to the loading tray lifting device by the material transfer mechanism 1. The loading tray lifting device moves the material tray 5 to the feeding conveyor line 34. The feeding conveyor line 34 drives the material tray 5 to the printing conveyor line. S2. When the material tray 5 moves to the bottom of the screen printing device 43, the printing conveyor line descends to fix the material tray 5 to the material tray fixing table 49, and then the screen printing device 43 descends to print the material in the fixed material tray 5. S3. After the screen printing is completed, the printing conveyor line rises and resets, and drives the material tray 5 to move to the printing position of the UV printing device 44 for UV printing. S4. After UV printing is completed, the printing conveyor line moves the material tray 5 to the unloading tray lifting device. S5. The material tray 5 in the unloading tray lifting device is moved to the loading tray lifting device by the return material conveyor line. S6, the material transfer mechanism 2 309 drives the material tray 5 to leave the feeding tray lifting device and enter the unloading car.

[0083] Therefore, the printing method in this embodiment achieves loading and unloading in one place, which helps to reduce the floor space occupied by the entire printing production line.

Claims

1. A printing mechanism for printing material in a tray of material, characterized by, The tray fixing table, the printing conveying line, the screen printing device, and the UV printing device are sequentially arranged along the conveying direction of the printing conveying line.

2. The printing mechanism of claim 1, wherein, The tray fixing table comprises: A mounting frame, a negative pressure box is fixedly installed on the mounting frame, the upper surface of the negative pressure box is configured as a multi-hole plate, and the negative pressure box is communicated with a gas suction pipe; A limiting device is arranged on the conveying path of the printing conveying line and fixedly connected with the mounting frame, and the limiting device is configured to block the continuous conveying of the material tray when the material tray is conveyed to the position directly above the multi-hole plate; A plurality of positioning devices are installed on the mounting frame and distributed around the multi-hole plate, and are used to position the material tray after the material tray is placed on the multi-hole plate.

3. The printing mechanism of claim 2, wherein, The positioning device comprises: A fixed positioning member and a movable positioning member one in the north-south direction of the multi-hole plate, the fixed positioning member is fixedly connected with the mounting frame, and the movable positioning member one is connected with a horizontal moving device three, the horizontal moving device three is configured to drive the movable positioning member one to move in the north-south direction, and the horizontal moving device three is fixedly connected with the mounting frame; A lifting positioning member and a movable positioning member two in the east-west direction of the multi-hole plate, the lifting positioning member is fixedly connected with the mounting frame, and the movable positioning member two is connected with a horizontal moving device four, the horizontal moving device four is configured to drive the movable positioning member two to move in the east-west direction, and the horizontal moving device four is fixedly connected with the mounting frame.

4. The printing mechanism of claim 3, wherein: The horizontal moving device three is connected with a lifting member two, the horizontal moving device three is driven to lift by the lifting member two, and the lifting member two is fixedly connected with the mounting frame.

5. The printing mechanism of claim 3, wherein: The lifting positioning member is connected with a lifting member three, the lifting positioning member is driven to lift by the lifting member three, and the lifting member three is fixedly connected with the mounting frame.

6. The printing mechanism of claim 3, wherein: The horizontal moving device four is connected with a lifting member four, the horizontal moving device four is driven to lift by the lifting member four, and the lifting member four is fixedly connected with the mounting frame.

7. The printing mechanism of claim 2, wherein: The fixed positioning member, the movable positioning member one, the movable positioning member two, and the lifting positioning member are bearings or rollers. The printing conveying line comprises a feeding conveying line three and a feeding conveying line four, the feeding conveying line four is fixedly arranged, the feeding conveying line three is connected with the lifting device one, and the feeding conveying line four is configured to receive the material tray conveyed by the feeding conveying line three.

8. The printing mechanism of claim 7, wherein: The UV printing device is configured to perform UV printing on the material in the material tray on the feeding conveying line four. The lifting device one comprises a lifting member one, a lifting frame, and a guide frame, the lifting member one is fixedly arranged, the guide frame is fixedly connected with the lifting frame, and the guide frame is also connected with the mounting frame to slide up and down, the movable end of the lifting member one is connected with the lifting frame, the lifting frame is driven to lift by the lifting member one, and the feeding conveying line three is installed on the lifting frame.

9. The printing mechanism of claim 1, wherein, The machine case, the material tray fixing table, the printing conveying line and the screen printing device and the UV printing device arranged along the conveying direction of the printing conveying line are installed in the machine case.

10. A printing method applied to the printing mechanism according to any one of claims 1 to 9, characterized in that, The method comprises the steps of: Conveying the material tray through the printing conveying line; When the material tray moves to the position below the screen printing device, the printing conveying line is lowered to fix the material tray by the material tray fixing table, and then the screen printing device is lowered to print the material in the fixed material tray; After the screen printing is completed, the printing conveying line is raised to reset and move the material tray to the printing position of the UV printing device for UV printing; After the UV printing is completed, the printing conveying line continues to convey the material tray.

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