Environment-friendly printing machine for paper cup production

Abstract

The invention relates to the technical field of waste recycling, in particular to an environment-friendly printing machine for paper cup production, which comprises a support plate, and printing machines are fixedly mounted on the upper and lower end faces of the support plate; the fixing assembly comprises a fixing plate which is driven to be arranged on the upper end face of the supporting plate and located at the position away from the printing machine, a containing groove is formed in the fixing plate, an inclined groove is formed in the inner wall of the containing groove, a feeding port is formed in the inclined groove, and the fixing plate is driven to rotate on the upper end face of the supporting plate. Sprayed glass beads pass through a chute of a fixed plate, are magnetically attracted and matched with an iron clamping head through a magnetic attraction clamping head and enter a backflow device along a telescopic hose and a feeding pipe, a lifting block is elastically reset through a second coil spring, it is ensured that the feeding pipe is stably in butt joint when rotating along with the fixed plate, and the whole-process closed path design effectively prevents particles from leaking to pollute the environment; the backflow device conveys the glass beads to the conical box again through the conveying pipe by means of the negative pressure pump, and closed-loop circulation is formed.

Description

Technical Field

[0001] This invention relates to the field of waste resource utilization technology, specifically to an environmentally friendly printing machine for paper cup production, which is particularly suitable for the closed-loop recycling and reuse of glass bead waste in the printing industry. Background Technology

[0002] Paper cup printing machines are key equipment on paper cup production lines used to print patterns on the surface of paper cups. They are mainly responsible for printing brand logos, decorative patterns, and other content on fan-shaped paper blanks (semi-finished products). In recent years, some companies have tried to use sandblasting technology to replace traditional methods, that is, to physically roughen the surface of paper cups by spraying glass beads (50-100μm in diameter). However, existing sandblasting technology has the following key problems:

[0003] First, the glass beads scatter at a high rate after spraying, and there is a lack of effective closed-loop recycling, resulting in a large number of micro-particles becoming industrial solid waste, which increases production costs and causes environmental pollution.

[0004] Second, the existing equipment adopts an open recycling path, in which glass beads are collected by falling naturally under gravity. During the process, particle leakage is prone to occur, which cannot meet the environmental protection requirements for industrial solid waste treatment under the "Solid Waste Pollution Prevention and Control Law".

[0005] Third, unrecovered glass beads need to be replenished frequently, increasing the cost of consuming glass beads, and scattered microparticles require additional manual cleaning, resulting in reduced production efficiency. Summary of the Invention

[0006] To address the aforementioned shortcomings of existing technologies, this invention provides an environmentally friendly printing machine for paper cup production, which effectively solves the problem of poor glass bead recycling efficiency when performing roughening treatment with jetted glass beads in existing technologies.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] This invention provides an environmentally friendly printing machine for paper cup production, comprising:

[0009] A support plate, on which a printing machine is fixedly mounted;

[0010] A fixing assembly includes a fixing plate driven on the upper surface of a support plate and located away from the printing machine. The fixing plate has a placement groove, and the inner wall of the placement groove has an inclined groove. The inclined groove has a feed inlet. The fixing plate is driven to rotate on the upper surface of the support plate. A telescopic hose is fixedly installed at the end of the fixing plate away from the connecting plate. One end of the telescopic hose is connected to a magnetic chuck. A fixing seat is provided on one side of the support plate, and a telescopic hollow tube is fixedly installed on the inner wall of the fixing seat.

[0011] A roughness increasing component includes a mold plate elastically disposed above a support plate, a flow divider box disposed above the mold plate, a nozzle rotatably disposed on the lower end face of the flow divider box, a conical box disposed above the flow divider box, the conical box being filled with glass beads, and an air supply device fixedly disposed above the conical box.

[0012] A reflux device for refluxing glass beads is fixedly installed on the lower end face of the support plate. The glass beads are solid waste with a diameter of 50–100 μm.

[0013] The inclined groove and the magnetic chuck form a closed particulate matter collection channel;

[0014] The pneumatic conveying device that links the telescopic hollow tube with the reflux device has a negative pressure range of 0.2–0.4 MPa.

[0015] The conical box contains a first solenoid valve and a second solenoid valve.

[0016] Preferably, a first linear drive device is fixedly installed on one side of the support plate. The first linear drive device consists of a base plate, a motor, and a screw. A movable seat is threaded onto the outer wall of the screw. A shaft is fixedly installed on the inner wall of the movable seat. Iron blocks are symmetrically installed on the inner wall of the movable seat away from the shaft. A connecting plate is rotatably installed on the outer wall of the movable seat. Electromagnets are fixedly installed on both sides of the connecting plate. The electromagnets are electrically connected to a controller. The electromagnets and iron blocks are magnetically attracted to each other. A first fixing sleeve is rotatably installed on the inner wall of the movable seat and on the outer wall of the shaft. The first fixing sleeve is fixedly connected to the connecting plate. A first coil spring is provided inside the first fixing sleeve. The inner and outer ends of the first coil spring are fixedly connected to the first fixing sleeve and the shaft, respectively. The end of the connecting plate away from the movable seat is fixedly connected to the fixing plate. The telescopic hose is connected to the feed inlet.

[0017] Preferably, a slide rail is fixedly installed on the upper surface of the support plate at a position away from the first linear drive device, a lifting plate is slidably installed inside the slide rail, a plurality of first springs are fixedly installed between the lifting plate and the slide rail, and one end of the fixed plate is slidably connected to the lifting plate and the slide rail respectively.

[0018] Preferably, a lifting block is slidably installed on the inner wall of the fixed base and at the upper end of the telescopic hollow tube. A first fixing plate is symmetrically installed on one side of the lifting block. A feed tube is rotatably installed inside the first fixing plate. One end of the feed tube is connected to an iron clamp head, and the other end of the feed tube is connected to a first flexible tube. The first flexible tube passes through the lifting block and communicates with the telescopic hollow tube. A short shaft is fixedly installed on the opposite side of the first fixing plate. The short shaft is fixedly connected to the outer wall of the feed tube. A second fixing sleeve is fixedly installed on the opposite side of the first fixing plate and on the outer wall of the short shaft. A second coil spring is provided inside the second fixing sleeve. The inner and outer ends of the second coil spring are fixedly connected to the second fixing sleeve and the short shaft, respectively. The iron clamp head and the magnetic clamp head are magnetically slidably connected.

[0019] Preferably, a bracket is fixedly installed on the lower end face of the support plate, the bracket is fixedly connected to the fixed seat, a second spring is fixedly installed between the bracket and the lifting block, and the telescopic hollow pipe is connected to the return device through the return pipe.

[0020] Preferably, a connecting frame is fixedly installed on one side of the bracket, a sliding groove is provided in the connecting frame, fixed columns are symmetrically installed in the sliding groove, a lifting plate is slidably installed on the outer wall of the fixed column, a third spring is fixedly installed between the lifting plate and the sliding groove, a short rod is fixedly installed on one side of the lifting plate, a linkage block is rotatably installed on the outer wall of the short rod, a third coil spring is provided on the outer wall of the short rod, the inner and outer ends of the third coil spring are fixedly connected to the short rod and the linkage block respectively, and one side of the linkage block is fixedly connected to the mold plate.

[0021] Preferably, a support frame is fixedly installed on one side of the bracket, and a fixed box is fixedly installed on one end of the support frame. An opening is provided at the bottom inner end of the fixed box, and a flexible connecting sleeve is fixedly installed between the opening and the mold plate. A square opening is provided on the inner wall of the flexible connecting sleeve near the support frame.

[0022] Preferably, an external box is fixedly installed on one side of the fixed box, and a second linear drive device is fixedly installed on the inner wall of the external box. The drive end of the second linear drive device is fixedly connected to the diverter box. Multiple second fixing plates are linearly arrayed and fixedly installed on the lower end face of the diverter box. The inner wall of each second fixing plate is rotatably connected to a nozzle. A second flexible tube is connected to the upper end of the nozzle and is connected to the diverter box. A rotating rod is rotatably installed between each of the second fixing plates. Both ends of the rotating rod pass through the second fixing plate and are fixedly connected to the nozzle. A rotary drive component is fixedly installed on one side of each second fixing plate. The output end of the rotary drive component passes through the second fixed plate and is fixedly connected to the rotating rod. The upper end of the diverter box is connected to the conical box. A flow pipe is embedded in the conical box. Flow ports are symmetrically opened on the lower part of the outer wall of the flow pipe. The upper end face of the diverter box is fixedly connected to the first solenoid valve at the position corresponding to the flow pipe. The first solenoid valve is electrically connected to the controller. A partition is fixedly installed on the inner wall of the fixed box above the conical box. The upper end face of the partition is fixedly connected to the air supply device. The lower end face of the air supply device is connected to the air inlet pipe. The lower end of the air inlet pipe passes through the partition and is connected to the flow pipe.

[0023] Preferably, the upper end face of the conical box is connected to an exhaust pipe, the inner wall of the exhaust pipe is fixedly connected to a second solenoid valve, the second solenoid valve is electrically connected to a controller, the upper end of the exhaust pipe passes through the fixed box and is slidably connected to it, the outer wall of the fixed box is provided with a slot, a connecting slider is slidably installed in the slot, the connecting slider is connected to the conical box, folding curtains are fixedly installed on both sides of the connecting slider, the folding curtains are slidably connected to the inner wall of the slot, and the connecting slider is connected to the return device through a conveying pipe.

[0024] The technical solution provided by this invention has the following advantages compared with the known prior art:

[0025] First, after spraying, the glass beads pass through the inclined groove of the fixed plate and are magnetically attracted to the iron clamp head. They then enter the return device along the telescopic hose and feed pipe. The lifting block is elastically reset by the second coil spring, ensuring stable connection when the feed pipe rotates with the fixed plate. The fully enclosed path design effectively prevents particles from leaking out and polluting the environment. The return device uses a negative pressure pump to transport the glass beads back to the conical box through the conveying pipe, forming a closed loop. The second solenoid valve of the exhaust pipe automatically opens after spraying, expelling residual air and trapping glass beads. The folding curtain sealing structure further prevents airflow disturbance from causing dispersion. Combined with the controller's linkage control of the first and second solenoid valves, the glass beads are recycled, reducing the frequency of manual cleaning, significantly reducing resource waste, and meeting the requirements of green production.

[0026] Secondly, compressed air (0.2-0.4MPa) driven by the air supply device is used to transport glass beads to the distribution box. The nozzle is controlled by the rotary drive to spray the glass beads at a 45° angle onto the surface of the paper cup. The mold plate is elastically pressed against the paper cup by the linkage block and the lifting plate. Combined with the second linear drive device, the distribution box is driven to move back and forth, which precisely limits the spray range to cover only the area to be printed. During the spraying process, the mold plate is flexibly connected to the fixed box through the soft connecting sleeve, which automatically shields the non-processed area. The roughness of the target area can be improved to the ink adhesion requirement within 10 seconds, while avoiding the penetration of the waterproof layer. The linkage design of the third spring and the third coil spring effectively adapts to the deformation difference of the unfolding angle of the paper blank. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0028] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0029] Figure 2 This is a schematic diagram of the structure of the fixing plate of the present invention;

[0030] Figure 3 This is an exploded structural diagram of the movable base of the present invention;

[0031] Figure 4 This is a schematic diagram of the slide rail structure of the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of the bracket of the present invention;

[0033] Figure 6 This is a schematic diagram of the structure of the fixing base of the present invention;

[0034] Figure 7 for Figure 6 Enlarged structural diagram at point A in the middle;

[0035] Figure 8 This is a schematic diagram of the structure of the mold plate of the present invention;

[0036] Figure 9 for Figure 8 Enlarged structural diagram at point B;

[0037] Figure 10 This is a schematic diagram of the roughness-enhancing component of the present invention;

[0038] Figure 11This is a bottom view of the surface roughness increasing component of the present invention.

[0039] Figure 12 This is a cross-sectional view of the conical box of the present invention.

[0040] Reference numerals: 1. Support plate; 2. Printing machine; 3. Fixing assembly; 301. First linear drive device; 302. Moving seat; 303. Shaft; 304. Connecting plate; 305. Fixing plate; 306. First fixing sleeve; 307. First coil spring; 308. Electromagnet; 309. Iron block; 310. Placement slot; 311. Inclined slot; 312. Feed inlet; 313. Telescopic hose; 314. Magnetic chuck; 315. Slide rail; 316. Lifting plate; 317. First spring; 318. Fixing seat; 319. Lifting block; 320. Telescopic tube; 321. First fixing piece; 322. Feed pipe; 323. Iron chuck; 324. Second spring; 325. Second fixing sleeve; 326. Short shaft; 327. Second coil spring; 328. Return pipe; 329. 330. Return device; 4. Conveying pipe; 5. Roughness increasing component; 6. Bracket; 7. Connecting frame; 8. Fixed column; 9. Third spring; 10. Lifting plate; 11. Short rod; 12. Third coil spring; 13. Linkage block; 14. Mold plate; 15. Support frame; 16. Fixed box; 17. External box; 18. Opening; 19. Flexible connecting sleeve; 20. Partition plate; 20. Air supply device; 21. Air inlet pipe; 22. Conical box; 23. Diverter box; 24. Second fixed plate; 25. Nozzle; 26. Rotating rod; 27. Rotary drive component; 28. Second linear drive device; 29. ​​Exhaust pipe; 20. Flow pipe; 20. First solenoid valve; 21. Connecting slider; 22. Folding curtain. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0042] The present invention will be further described below with reference to embodiments.

[0043] Example: Refer to Figures 1 to 12 An environmentally friendly printing machine for paper cup production includes:

[0044] Support plate 1, printing machine 2 is fixedly installed on the upper and lower end faces of support plate 1;

[0045] The fixing component 3 includes a fixing plate 305 driven on the upper surface of the support plate 1 and located away from the printing machine 2. The fixing plate 305 has a placement groove 310, and the inner wall of the placement groove 310 has an inclined groove 311. The inclined groove 311 has a feed port 312. The fixing plate 305 is driven to rotate on the upper surface of the support plate 1. A telescopic hose 313 is fixedly installed at the end of the fixing plate 305 away from the connecting plate 304. One end of the telescopic hose 313 is connected to a magnetic chuck head 314. A fixing seat 318 is provided on one side of the support plate 1. A telescopic hollow tube 320 is fixedly installed on the inner wall of the fixing seat 318.

[0046] Roughness increasing component 4 includes a mold plate 409 elastically disposed above the support plate 1. The surface of the mold plate 409 is provided with a hollow structure complementary to the printed pattern. A flow distribution box 419 is disposed above the mold plate 409. A nozzle 421 is rotatably disposed on the lower end face of the flow distribution box 419. A conical box 418 is disposed above the flow distribution box 419. The conical box 418 is filled with glass beads. An air supply device 416 is fixedly disposed above the conical box 418.

[0047] A reflux device 329 for refluxing glass beads is fixedly installed on the lower end face of the support plate 1. The glass beads are solid waste with a diameter of 50–100 μm.

[0048] The inclined groove 311 and the magnetic card head 314 form a closed particulate matter collection channel;

[0049] The pneumatic conveying device that links the telescopic hollow tube 320 with the return device 329 has a negative pressure range of 0.2–0.4 MPa.

[0050] The conical box 418 contains a first solenoid valve 427 and a second solenoid valve.

[0051] Reference Figures 2 to 7A first linear drive device 301 is fixedly installed on one side of the support plate 1. The first linear drive device 301 consists of a base plate, a motor, and a screw. The motor is an existing device, and the existing technology is relatively mature, so it will not be described in detail here. A movable seat 302 is threaded onto the outer wall of the screw. A shaft 303 is fixedly installed on the inner wall of the movable seat 302. Iron blocks 309 are symmetrically installed on the inner wall of the movable seat 302 at positions away from the shaft 303. A connecting plate 304 is rotatably installed on the outer wall of the movable seat 302. Electromagnets 308 are fixedly installed on both sides of the connecting plate 304. The electromagnets 308 generate magnetic force or lose magnetic force. When voltage is supplied to the electromagnets 308, the electromagnets 308 can magnetically attract and cooperate with the iron blocks 309, so that the fixed plate 305 and the support plate 1 remain horizontal. Simultaneously, the first coil spring 307 is wound up, and the electromagnet 308 is electrically connected to the controller. The electromagnet 308 and the iron block 309 are magnetically attracted to each other. A first fixed sleeve 306 is rotatably installed on the inner wall of the movable seat 302 and on the outer wall of the shaft 303. The first fixed sleeve 306 is fixedly connected to the connecting plate 304. The first coil spring 307 is provided inside the first fixed sleeve 306. The inner and outer ends of the first coil spring 307 are fixedly connected to the first fixed sleeve 306 and the shaft 303, respectively. The end of the connecting plate 304 away from the movable seat 302 is fixedly connected to the fixed plate 305. The telescopic hose 313 is connected to the feed port 312. The telescopic hose 313 is made of existing rubber material and has a certain degree of telescopicity and elasticity. The upper surface of the support plate 1 and the end away from the first linear drive device 301 A slide rail 315 is fixedly installed at the location. A lifting plate 316 is slidably installed inside the slide rail 315. Multiple first springs 317 are fixedly installed between the lifting plate 316 and the slide rail 315. One end of a fixed plate 305 is slidably connected to the lifting plate 316 and the slide rail 315 respectively. A lifting block 319 is slidably installed on the inner wall of the fixed base 318 and at the upper end of the telescopic tube 320. A first fixing plate 321 is symmetrically installed on one side of the lifting block 319. A feed pipe 322 is rotatably installed inside the first fixing plate 321. One end of the feed pipe 322 is connected to an iron clamp 323, and the other end of the feed pipe 322 is connected to a first flexible tube. The first flexible tube passes through the lifting block 319 and connects to the telescopic tube 320. A short shaft 326 is fixedly installed on the opposite side of the first fixing plate 321. The short shaft 326 is fixedly connected to the outer wall of the feed pipe 322. A second fixing sleeve 325 is fixedly installed on the opposite side of the first fixing plate 321 and on the outer wall of the short shaft 326. A second coil spring 327 is provided inside the second fixing sleeve 325. The inner and outer ends of the second coil spring 327 are fixedly connected to the second fixing sleeve 325 and the short shaft 326, respectively. The iron clip head 323 is magnetically slidably connected to the magnetic clip head 314. A bracket 401 is fixedly installed on the lower end face of the support plate 1. The bracket 401 is fixedly connected to the fixing seat 318. A second spring 324 is fixedly installed between the bracket 401 and the lifting block 319. The telescopic empty pipe 320 is connected to the return device 329 through the return pipe 328. When the paper cup semi-finished product is placed into or taken out of the placement slot 310,Existing robotic arms can be used, and the technology for these arms is relatively mature, so we won't go into detail here.

[0052] Reference Figures 5 to 12 A connecting frame 402 is fixedly installed on one side of the bracket 401. A sliding groove is provided inside the connecting frame 402, and fixed columns 403 are symmetrically installed within the sliding groove. A lifting plate 405 is slidably installed on the outer wall of the fixed column 403. A third spring 404 is fixedly installed between the lifting plate 405 and the sliding groove. A short rod 406 is fixedly installed on one side of the lifting plate 405. A linkage block 408 is rotatably installed on the outer wall of the short rod 406. A rounded chamfer (not shown in the attached drawing) is provided on the side of the linkage block 408 away from the mold plate 409. When the fixed plate 305 is driven to reset and contacts the linkage block 408, the rounded chamfer effectively prevents the fixed plate 309 from contacting the mold plate 409. 5. Contact with the linkage block 408 is obstructed. A third coil spring 407 is provided on the outer wall of the short rod 406. The inner and outer ends of the third coil spring 407 are fixedly connected to the short rod 406 and the linkage block 408, respectively. One side of the linkage block 408 is fixedly connected to the mold plate 409. A support frame 410 is fixedly installed on one side of the bracket 401. A fixed box 411 is fixedly installed at one end of the support frame 410. An opening 413 is opened at the bottom inner end of the fixed box 411. A flexible connecting sleeve 414 is fixedly installed between the opening 413 and the mold plate 409. A square opening is opened on the inner wall of the flexible connecting sleeve 414 near the support frame 410. (Refer to...) Figure 10An external box 412 is fixedly installed on one side of the fixed box 411. A second linear drive device 424 is fixedly installed on the inner wall of the external box 412. The drive end of the second linear drive device 424 is fixedly connected to the diverter box 419. Multiple second fixing plates 420 are linearly arrayed and fixedly installed on the lower end face of the diverter box 419. The inner wall of the second fixing plate 420 is rotatably connected to the nozzle 421. The upper end of the nozzle 421 is connected to a second flexible tube, and the second flexible tube is connected to the diverter box 419. A rotating rod 422 is rotatably installed between each second fixing plate 420. Both ends of the rotating rod 422 pass through the second fixing plate 420 and are fixedly connected to the nozzle 421. A rotating rod is fixedly installed on one side of the second fixing plate 420. The rotary drive component 423 can be an existing rotary motor. During the rotation of the nozzle 421, it drives the nozzle 421 to spray glass beads onto the paper cup semi-finished product at a 45° angle. While the second linear drive device 424 drives the diversion box 419 to reciprocate within the fixed box 411, the rotary drive component 423 drives the nozzle 421 to spray glass beads onto the paper cup semi-finished product at a 45° angle in the opposite direction, ensuring uniform surface roughness of the printed area on the paper cup semi-finished product. The output end of the rotary drive component 423 passes through the second fixed plate 420 and is fixedly connected to the rotating rod 422. The upper end of the diversion box 419 is connected to the conical box 418. A flow tube 426 is embedded inside the conical box 418. Flow ports are symmetrically opened on the lower part of the outer wall of the flow tube 426. The upper end face of the diverter box 419 is fixedly connected to the first solenoid valve 427 at the position corresponding to the flow tube 426. The first solenoid valve 427 is electrically connected to the controller. A partition 415 is fixedly installed on the inner wall of the fixed box 411 above the conical box 418. The upper end face of the partition 415 is fixedly connected to the air supply device 416. The lower end face of the air supply device 416 is connected to an air inlet pipe 417. The lower end of the air inlet pipe 417 passes through the partition 415 and connects to the flow tube 426. An exhaust pipe 425 is connected to the upper end face of the conical box 418. The inner wall of the exhaust pipe 425 is connected to the second solenoid valve 427. The valve is fixedly connected, the second solenoid valve is electrically connected to the controller, the upper end of the exhaust pipe 425 passes through the fixed box 411 and is slidably connected to it, the outer wall of the fixed box 411 has a slot, a connecting slider 428 is slidably installed in the slot, the connecting slider 428 is connected to the conical box 418, folding curtains 429 are fixedly installed on both sides of the connecting slider 428, the folding curtains 429 are slidably connected to the inner wall of the slot, the connecting slider 428 is connected to the return device 329 through the conveying pipe 330, the connecting slider 428 can move back and forth in the slot along with the conical box 418, and while moving back and forth, it can compress or drive the folding curtains 429 to unfold, so as to prevent external dust from entering the interior of the fixed box 411.

[0053] The working principle of this invention is as follows:

[0054] The paper cup semi-finished product is placed in the placement slot 310. The first linear drive device 301 is activated to drive the moving seat 302 to move. The moving seat 302 will drive the connecting plate 304 and the fixing plate 305 to move together. When it moves to the mold plate 409, the fixing plate 305 will contact and press against the mold plate 409 (see reference). Figure 3 The fixed plate 305 has a rounded edge on the side near the mold plate 409, and the inner wall of the placement groove 310 also has a rounded edge on the side near the mold plate 409. This causes the mold plate 409 to drive the linkage block 408 and the lifting plate 405 to slide upward in the slide groove, compressing the third spring 404. As the fixed plate 305 moves continuously, the mold plate 409 will slide into the placement groove 310 after being squeezed and raised. The first linear drive device 301 stops driving the fixed plate 305 to move. The mold plate 409 will press against the paper cup semi-finished product placed in the placement groove 310. At the same time, the magnetic suction head 314 will slide magnetically connect with the iron suction head 323. The controller controls the voltage input to the first solenoid valve 427, causing its valve core to open. The system opens by turning on the air supply device 416 to inject pressurized air into the air inlet pipe 417 (the air pressure needs to be controlled within 0.2-0.4MPa). The air then enters the distribution box 419 through the air inlet pipe 417 and the flow pipe 426. As the air flows in the flow pipe 426, the glass beads set in the conical box 418 will continuously enter the distribution box 419 through the flow port with the air, and then be evenly sprayed out from the nozzle 421. The second linear drive device 424 is turned on to drive the distribution box 419 and the conical box 418 to move back and forth in the fixed box 411. The glass beads sprayed out by the nozzle 421 will impact the surface of the paper cup semi-finished product. The mold plate 409 will block the surface of the paper cup semi-finished product that does not need to be roughened.

[0055] It should be noted that the air supply device 416 provides airflow that carries glass beads as it flows, which helps to increase the falling speed of the glass beads and improves the impact of the falling glass beads on the surface of the paper cup semi-finished product to increase the roughness. In addition, all inner walls through which the glass beads flow are smooth.

[0056] It should also be noted that the glass beads need to be made of soda-lime glass with a Mohs hardness of 5.5. The rotating drive 423 can drive the rotating rod 422 to rotate, which in turn drives the nozzle 421 to rotate and adjust the spray angle. The spray angle needs to reach 45°, and the spraying time needs to be within 10 seconds. The glass beads need to be cleaned before spraying to prevent dust from adhering. The surface coating of the paper cup semi-finished product needs to be ≥30μm to increase the roughness. If the roughness is lower than ≥30μm, the glass beads will penetrate the coating layer, and the waterproofness of the paper cup semi-finished product will be weakened.

[0057] After the glass beads are sprayed, the gas supply device 416 is turned off. The glass beads will remain on the surface of the paper cup semi-finished product and the mold plate 409. The voltage input to the electromagnet 308 is controlled by the controller, causing the electromagnet 308 to lose its magnetism. The first coil spring 307 will release its winding force, causing the first coil spring 307 to drive the connecting plate 304 and the fixing plate 305 to rotate and tilt. The other end of the connecting plate 304 will descend and press the lifting plate 316 to compress the first spring 317, causing the fixing plate 305 to be aligned. The body is tilted, and the accumulated glass beads will roll on the surface of the paper cup semi-finished product and the iron block 309, and enter the inclined groove 311 and the feed port 312 through the square opening. They will flow into the telescopic hose 313 and the magnetic suction head 314. The magnetic suction head 314 and the iron suction head 323 are magnetically connected. The glass beads that enter the magnetic suction head 314 will enter the feed pipe 322 through the iron suction head 323, enter the telescopic empty pipe 320 through the first hose, and then flow back into the return device 329 through the return pipe 328.

[0058] It should be noted that the metal clamp 323 and the feed tube 322 can rotate between the first fixed plate 321 via the short shaft 326, and the lifting block 319 can drive the metal clamp 323 and the feed tube 322 to rise and fall. The telescopic hose 313 has a certain elasticity, which allows the magnetic clamp 314 to magnetically contact the metal clamp 323 and rotate around the shaft 303 when the fixed plate 305 rotates.

[0059] While the fixed plate 305 rotates, the mold plate 409 can rotate and tilt synchronously with the fixed plate 305 through its rotatable connection with the short rod 406.

[0060] The reflux device 329 consists of an existing negative pressure suction nozzle, a negative pressure pump, and a storage tank. When the glass beads enter the reflux device 329 through the reflux pipe 328, they are stored in the storage tank. The negative pressure pump and the negative pressure suction nozzle can suck out the glass beads and discharge them into the connecting slider 428 through the conveying pipe 330. Then, the glass beads enter the conical box 418 through the connecting slider 428. It should be noted that after the glass beads are sprayed for ten seconds, the controller controls the voltage input to the first solenoid valve 427 to close, so that the valve core of the first solenoid valve 427 opens. The controller controls the voltage input to the second solenoid valve to open, so that the valve core of the second solenoid valve opens. The opening diameter of the valve core is smaller than the diameter of the glass beads. The air entering the conical box 418 is discharged outward through the second solenoid valve and the exhaust pipe 425, while the glass beads remain in the conical box 418.

[0061] After increasing the surface roughness of the area to be printed on the paper cup semi-finished product, the first linear drive device 301 is turned on to continue driving the fixed plate 305 to move the paper cup semi-finished product. The mold plate 409 will contact the circular arc edge set in the placement groove 310 and slide out of the placement groove 310 and move to the bottom of the printing machine 2 for printing.

[0062] It should be noted that the glass beads themselves have a smooth surface, and the air supply device 416 and the negative pressure pump have high power, generating high air pressure. As the glass beads flow, they will not become blocked during the flow process.

[0063] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An environmentally friendly printing machine for paper cup production, characterized in that, include: A support plate (1) is provided, and a printing machine (2) is fixedly installed on the upper and lower end faces of the support plate (1); A fixing component (3) is provided, which includes a fixing plate (305) driven on the upper surface of the support plate (1) and located away from the printing machine (2). The fixing plate (305) has a placement groove (310) and an inclined groove (311) on the inner wall of the placement groove (310). The inclined groove (311) has a feed inlet (312). The fixing plate (305) is driven to rotate on the upper surface of the support plate (1). A telescopic hose (313) is fixedly installed at one end of the fixing plate (305) away from the connecting plate (304). One end of the telescopic hose (313) is connected to a magnetic chuck head (314). A fixing seat (318) is provided on one side of the support plate (1). A telescopic hollow tube (320) is fixedly installed on the inner wall of the fixing seat (318). A roughness increasing component (4) includes a mold plate (409) elastically disposed above a support plate (1), a flow divider box (419) disposed above the mold plate (409), a nozzle (421) rotatably disposed on the lower end face of the flow divider box (419), a conical box (418) disposed above the flow divider box (419), the conical box (418) being filled with glass beads, and an air supply device (416) fixedly disposed above the conical box (418). The lower end face of the support plate (1) is fixedly installed with a reflux device (329) for refluxing glass beads, the glass beads being solid waste with a diameter of 50–100 μm; The inclined groove (311) and the magnetic chuck (314) form a closed particulate matter collection channel; The pneumatic conveying device that links the telescopic hollow tube (320) with the return device (329) has a negative pressure range of 0.2–0.4 MPa. The cone-shaped box (418) contains a first solenoid valve (427) and a second solenoid valve.

2. The environmentally friendly printing machine for paper cup production according to claim 1, characterized in that, A first linear drive device (301) is fixedly installed on one side of the support plate (1). The first linear drive device (301) consists of a base plate, a motor, and a screw. A movable seat (302) is threaded onto the outer wall of the screw. A shaft (303) is fixedly installed on the inner wall of the movable seat (302). Iron blocks (309) are symmetrically installed on the inner wall of the movable seat (302) at positions away from the shaft (303). A connecting plate (304) is rotatably installed on the outer wall of the movable seat (302). Electromagnets (308) are fixedly installed on both sides of the connecting plate (304). The electromagnets (308) are electrically connected to a controller. The electromagnet (308) and the iron block (309) are magnetically attracted to each other. A first fixed sleeve (306) is rotatably installed on the inner wall of the movable seat (302) and on the outer wall of the shaft (303). The first fixed sleeve (306) is fixedly connected to the connecting plate (304). A first coil spring (307) is provided inside the first fixed sleeve (306). The inner and outer ends of the first coil spring (307) are fixedly connected to the first fixed sleeve (306) and the shaft (303) respectively. The end of the connecting plate (304) away from the movable seat (302) is fixedly connected to the fixed plate (305). The telescopic hose (313) is connected to the feed port (312).

3. The environmentally friendly printing machine for paper cup production according to claim 2, characterized in that, A slide rail (315) is fixedly installed on the upper surface of the support plate (1) at a position away from the first linear drive device (301). A lifting plate (316) is slidably installed inside the slide rail (315). A plurality of first springs (317) are fixedly installed between the lifting plate (316) and the slide rail (315). One end of the fixed plate (305) is slidably connected to the lifting plate (316) and the slide rail (315).

4. The environmentally friendly printing machine for paper cup production according to claim 3, characterized in that, A lifting block (319) is slidably installed on the inner wall of the fixed base (318) and at the upper end of the telescopic hollow tube (320). A first fixing plate (321) is symmetrically installed on one side of the lifting block (319). A feed pipe (322) is rotatably installed inside the first fixing plate (321). One end of the feed pipe (322) is connected to an iron clamp (323), and the other end of the feed pipe (322) is connected to a first flexible tube. The first flexible tube passes through the lifting block (319) and communicates with the telescopic hollow tube (320). The first fixing plate (319) is slidably installed on the upper end of the telescopic hollow tube (320). 1) A short shaft (326) is fixedly installed on the opposite side. The short shaft (326) is fixedly connected to the outer wall of the feed pipe (322). A second fixing sleeve (325) is fixedly installed on the opposite side of the first fixing plate (321) and on the outer wall of the short shaft (326). A second coil spring (327) is provided inside the second fixing sleeve (325). The inner and outer ends of the second coil spring (327) are fixedly connected to the second fixing sleeve (325) and the short shaft (326) respectively. The iron clip head (323) is magnetically slidably connected to the magnetic clip head (314).

5. An environmentally friendly printing machine for paper cup production according to claim 4, characterized in that, A bracket (401) is fixedly installed on the lower end face of the support plate (1). The bracket (401) is fixedly connected to the fixed seat (318). A second spring (324) is fixedly installed between the bracket (401) and the lifting block (319). The telescopic hollow tube (320) and the return device (329) are connected through the return pipe (328).

6. An environmentally friendly printing machine for paper cup production according to claim 5, characterized in that, A connecting frame (402) is fixedly installed on one side of the bracket (401). A sliding groove is provided in the connecting frame (402). Fixed columns (403) are symmetrically installed in the sliding groove. A lifting plate (405) is slidably installed on the outer wall of the fixed column (403). A third spring (404) is fixedly installed between the lifting plate (405) and the sliding groove. A short rod (406) is fixedly installed on one side of the lifting plate (405). A linkage block (408) is rotatably installed on the outer wall of the short rod (406). A third coil spring (407) is provided on the outer wall of the short rod (406). The inner and outer ends of the third coil spring (407) are fixedly connected to the short rod (406) and the linkage block (408) respectively. One side of the linkage block (408) is fixedly connected to the mold plate (409).

7. An environmentally friendly printing machine for paper cup production according to claim 6, characterized in that, A support frame (410) is fixedly installed on one side of the bracket (401), and a fixed box (411) is fixedly installed on one end of the support frame (410). An opening (413) is opened at the bottom inner end of the fixed box (411), and a flexible connecting sleeve (414) is fixedly installed between the opening (413) and the mold plate (409). A square opening is opened on the inner wall of the flexible connecting sleeve (414) near the support frame (410).

8. An environmentally friendly printing machine for paper cup production according to claim 7, characterized in that, An external box (412) is fixedly installed on one side of the fixed box (411). A second linear drive device (424) is fixedly installed on the inner wall of the external box (412). The drive end of the second linear drive device (424) is fixedly connected to the diverter box (419). A plurality of second fixing plates (420) are linearly arrayed and fixedly installed on the lower end face of the diverter box (419). The inner wall of the second fixing plate (420) is rotatably connected to the nozzle (421). The upper end of the nozzle (421) is connected to a second flexible tube, and the second flexible tube is connected to the diverter box (419). A rotating rod (422) is rotatably installed between each of the second fixing plates (420). Both ends of the rotating rod (422) pass through the second fixing plate (420) and are fixedly connected to the nozzle (421). A rotary drive component (423) is fixedly installed on one side of the second fixing plate (420). 3) The output end passes through the second fixing plate (420) and is fixedly connected to the rotating rod (422). The upper end of the diverter box (419) is connected to the conical box (418). The conical box (418) is fitted with a flow tube (426). The outer wall of the flow tube (426) is symmetrically provided with flow ports at the lower position. The upper end face of the diverter box (419) is fixed to the first solenoid valve (427) at the position corresponding to the flow tube (426). The first solenoid valve (427) is electrically connected to the controller. A partition (415) is fixedly installed on the inner wall of the fixed box (411) and above the conical box (418). The upper end face of the partition (415) is fixedly connected to the air supply device (416). The lower end face of the air supply device (416) is connected to the air inlet pipe (417). The lower end of the air inlet pipe (417) passes through the partition (415) and is connected to the flow pipe (426).

9. An environmentally friendly printing machine for paper cup production according to claim 8, characterized in that, The upper end face of the conical box (418) is connected to an exhaust pipe (425). The inner wall of the exhaust pipe (425) is fixedly connected to a second solenoid valve. The second solenoid valve is electrically connected to a controller. The upper end of the exhaust pipe (425) passes through the fixed box (411) and is slidably connected to it. The outer wall of the fixed box (411) is provided with a slot. A connecting slider (428) is slidably installed in the slot. The connecting slider (428) is connected to the conical box (418). Folding curtains (429) are fixedly installed on both sides of the connecting slider (428). The folding curtains (429) are slidably connected to the inner wall of the slot. The connecting slider (428) is connected to the return device (329) through a conveying pipe (330).

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