Elliptical digital direct jet machine

Abstract

This invention discloses an elliptical digital direct-to-garment printer, relating to the field of textile printing technology. It includes a digital spraying machine body and an elliptical feeding mechanism disposed at one end of the digital spraying machine body. The elliptical feeding mechanism further includes a machine housing and a frame installed on the outside of the machine housing. A guardrail is fixedly installed on the outside of the frame. A conveying track is installed on the outside of the machine housing, and at least eight support rods are installed on the upper side of the conveying track. A conveying mechanism is provided between the support rods and the conveying track, and the support rods run on the upper side of the conveying track via the conveying mechanism. A platform is installed at one end of the upper end of each support rod. A squeegee mechanism is installed on the upper side of the machine housing, and one end of the squeegee mechanism is disposed on the upper side of the platform.

Description

Technical Field

[0001] This invention relates to the field of textile printing technology, and more particularly to an elliptical digital direct-to-garment printer. Background Technology

[0002] Oval digital direct-to-garment printers are widely used in the textile printing industry, primarily for printing high-precision color patterns on fabrics such as T-shirts and cut pieces. Existing elliptical digital direct-to-garment printers typically consist of an elliptical rotating table conveyor system, a digital inkjet printing unit, and a traditional screen printing unit.

[0003] Existing elliptical direct-to-garment printers suffer from the following shortcomings: **Conveying and positioning accuracy issues:** Traditional chain or belt drives are prone to cumulative gap errors at elliptical turns, causing slight misalignment of the printing platen when it reaches the printing or squeegee station, resulting in ghosting or misregistration of printed patterns. **Inconvenient platen parallelism adjustment:** Adjusting the platen's level or height is complex during long-term use or when changing substrates of different thicknesses, making rapid calibration difficult to match the optimal spray distance of the digital printhead. **Poor squeegee mechanism flexibility:** Traditional squeegee mechanisms rely on manual experience for stroke and pressure adjustment, resulting in poor adaptability to patterns of different widths. Furthermore, the switching action between the squeegee and the return blade is not smooth enough, affecting the efficiency of thick-plate printing. Summary of the Invention

[0004] This invention proposes an elliptical digital direct-injection printer to solve the problem of cumulative positioning error in elliptical conveying: it provides a conveying mechanism with a continuously driven rack and chain meshing structure to eliminate transmission gaps in the table during turning and straight-line operation, ensuring high-precision alignment of digital printing positions.

[0005] Solving the problem of difficult tabletop correction and leveling: A support rod assembly with an active correction structure is provided, which can quickly correct the slight deviation of the tabletop during operation and ensure that the tabletop plane always maintains an ideal parallel state with the digital printhead.

[0006] To address the issue of poor adaptability in squeegee printing operations, a squeegee printing mechanism with a flexible position adjustment and a double-staggered cylinder layout is provided. This improves the action response speed and stroke control accuracy of the squeegee and blade, thereby meeting the printing needs of different thicknesses of paste and different pattern sizes.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: An elliptical digital direct-injection printer includes a digital spraying machine body and an elliptical feeding mechanism disposed at one end of the digital spraying machine body. The elliptical feeding mechanism also includes a machine housing and a frame installed on the outside of the machine housing. A guardrail is fixedly installed on the outside of the frame. A conveying track is installed on the outside of the machine housing, and at least eight support rods are installed on the upper side of the conveying track. A conveying mechanism is provided between the support rods and the conveying track, and the support rods run on the upper side of the conveying track via the conveying mechanism. A platform is installed at one end of the upper end of the support rods. A scraping mechanism is installed on the upper side of the machine housing, and one end of the scraping mechanism is disposed on the upper side of the platform.

[0008] Preferably, the conveying mechanism includes a mounting frame at one end of a support rod, and a roller is provided between the mounting frame and the conveying track. Connecting plates are respectively installed at both ends of the mounting frame, and adjacent mounting frames are connected through the connecting plates. The mounting frame and the connecting plates are rotatably connected.

[0009] Preferably, an arc-shaped drive rack is fixedly mounted on one end of the mounting frame, and the drive rack is located inside the conveying track. A conveying motor is provided between the chassis and the conveying track, and the conveying motor is located below the conveying track. A drive gear is mounted on the output end of the conveying motor, and a placement frame fixedly connected to the chassis is provided at the mounting location of the drive gear. A driven gear is mounted on the other end of the placement frame, and a chain is mounted on the outer side of the drive gear and the driven gear. The chain meshes with the drive rack.

[0010] Preferably, at least three support strips are installed on the upper side of the support rod, and the support strips are embedded in the upper surface of the support rod, and the platform is fixedly installed on the upper side of the support strips.

[0011] Preferably, the support rod has a connecting piece inside, and a correction piece is installed at one end of the connecting piece. The correction piece is located inside the support rod and is connected to the support strip at the middle and front ends respectively. A correction air cylinder is installed inside the housing, and the output end of the correction air cylinder is provided with a movably connected correction L-shaped connector. The L-shaped connector is rotatably connected to one side of the housing, and one end of the L-shaped connector is provided with a connecting block. The connecting block is installed on the inner wall of the support rod and is connected to one end of the connecting piece. A spring is provided between one end of the correction piece and the inner wall of the support rod.

[0012] Preferably, the scraping mechanism includes a support frame fixedly installed on the top of the machine housing, and a support base is installed inside the support frame. A long plate is installed on one side of the support base, and a slidingly connected movable plate is provided at the bottom of the long plate. Two sets of scraping air cylinders are respectively installed at both ends of the movable plate, and the output end of the scraping air cylinder is respectively provided with a scraper for applying liquid and a scraper for recovering liquid. A scraping frame is installed on the upper side of the machine frame, and the scraper and scraper are arranged on the inner wall of the scraping frame.

[0013] Preferably, support blocks are installed at both ends of the scratching frame, and the support blocks are respectively set at the bottom of the placement plate. An adjusting air pressure cylinder is installed on the upper side of the placement plate, and the two ends of the adjusting air pressure cylinder are rotatably connected to the top of the support frame and the upper side of the placement plate, respectively. A scale is provided on the outer side of the placement plate.

[0014] Preferably, the interior of the long plate is provided with a sliding track, and a sliding block is installed inside the sliding track. The sliding block is fixedly connected to the upper side of the bottom movable plate. Synchronous wheels are installed at both ends of the inner wall of the sliding track, and a synchronous belt is provided on the outer side of the synchronous wheel. The synchronous belt is fixedly connected to the interior of the sliding block.

[0015] Preferably, a drive motor is installed on the outer side of the long plate, and a coupling is installed at the output end of the drive motor. The coupling passes through the inner wall of the long plate and is fixedly connected to one side of the synchronous pulley.

[0016] The beneficial effects of this invention are: 1. Improved positioning accuracy and operational stability: Through the cooperation of the conveyor track, rollers and connecting plates, especially the meshing transmission method of the drive rack and chain, the linkage rigidity and path consistency between adjacent platforms are ensured, significantly reducing operating noise and mechanical wear, and effectively improving the alignment accuracy of digital printing.

[0017] 2. Achieve active table posture correction: A linkage mechanism of correction plate, spring and correction pneumatic cylinder is set inside the support rod, so that the table can be actively adjusted laterally before entering the printing station, automatically correcting the track gap deviation caused by thermal expansion and contraction or assembly stress, and ensuring the stability of digital spraying quality.

[0018] 3. Improve the adaptability and uniformity of the squeegee printing operation: The squeegee printing mechanism adopts a synchronous belt drive and a double pneumatic cylinder staggered design, which enables the squeegee and blade to move independently and precisely control the stroke and angle. This not only improves the clarity of the printed lines and the uniformity of the paste coverage, but also simplifies the equipment debugging process and lowers the technical threshold for operators. Attached Figure Description

[0019] Figure 1 This is a structural diagram of an elliptical digital direct injection machine proposed in this invention; Figure 2 This is a side view of the overall structure of an elliptical digital direct injection machine proposed in this invention; Figure 3 This is a bottom structural diagram of an elliptical digital direct injection machine proposed in this invention; Figure 4 This is an enlarged view of point A of an elliptical digital direct injection machine proposed in this invention; Figure 5 This is a partial structural diagram of an elliptical digital direct injection machine proposed in this invention; Figure 6 This is a partial structural diagram of an elliptical digital direct injection machine proposed in this invention; Figure 7 This is a structural diagram of the elliptical digital direct-to-garment printer's scraping mechanism proposed in this invention; Figure 8 This is an exploded view of an elliptical digital direct injection machine with a long plate placed according to the present invention; Figure 9 This is an exploded view of an elliptical digital direct injection machine support rod proposed in this invention.

[0020] Numbered components in the diagram: 1. Digital spray painting machine body; 2. Chassis; 3. Frame; 4. Guardrail; 5. Support rod; 6. Table; 7. Scraping mechanism; 701. Placement board; 8. Scraping frame; 9. Adjusting air cylinder; 10. Conveyor track; 11. Conveyor motor; 12. Correcting air cylinder; 13. L-shaped connector; 14. Mounting bracket; 15. Roller; 16. Connecting block; 17. Support rod; 18. Correcting plate; 19. Drive. 20. Rack; 21. Connecting plate; 22. Driving gear; 23. Driven gear; 24. Chain; 25. Moving plate; 26. Scale; 27. Support block; 28. Support frame; 29. ​​Support base; 30. Drive motor; 31. Coupling; 32. Scraper; 33. Scraper blade; 34. Scraper pneumatic cylinder; 35. Sliding track; 36. Synchronous pulley; 37. Synchronous belt; 38. Sliding block; 39. Connecting piece; 30. Spring. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] Example 1: Refer to Figure 1-3 An elliptical digital direct spraying machine includes a digital spraying machine body 1 and an elliptical feeding mechanism disposed at one end of the digital spraying machine body 1. The elliptical feeding mechanism also includes a machine housing 2 and a frame 3 installed on the outside of the machine housing 2. A guardrail 4 is fixedly installed on the outside of the frame 3. A conveying track 10 is installed on the outside of the machine housing 2. At least eight support rods 5 are installed on the upper side of the conveying track 10. A conveying mechanism is provided between the support rods 5 and the conveying track 10. The support rods 5 run on the upper side of the conveying track 10 through the conveying mechanism. A platform 6 is installed at one end of the upper end of the support rods 5. A scraping mechanism 7 is installed on the upper side of the machine housing 2. One end of the scraping mechanism 7 is disposed on the upper side of the platform 6.

[0023] The chassis 2 serves as the supporting base and control center of the entire elliptical mechanism, housing the drive motor, pneumatic control valve assembly, and circuit control system. The frame 3 is fixedly installed on the outside of the chassis 2, extending the physical support range of the equipment and providing a structural framework for the operating area. The guardrail 4 is fixedly installed on the outer edge of the frame 3, providing safety protection and preventing operators from accidentally touching moving parts. The conveyor track 10, a closed elliptical ring, is installed on the upper outer surface of the chassis 2, guiding the movement of the support rods 5 and their associated platform 6. There are at least eight support rods 5, installed on the upper side of the conveyor track 10. Each support rod 5 acts as a cantilever support structure for the platform 6, with one end located above the conveyor track 10 and the other end extending outwards. The conveying mechanism is positioned between the support rods 5 and the conveyor track 10, driving the support rods 5 to circulate along the track 10. The platform 6, typically a rectangular flat plate, is installed on the upper end of the support rods 5 away from the chassis 2, used to place and secure the cut pieces or garments to be printed. The squeegee mechanism 7 is installed on the upper side of the chassis 2, with one end extending above the running path of the table 6. It is used to perform screen printing operations before and after digital printing, such as printing special effects like white ink base, thick stencil, or hot stamping paste.

[0024] The conveying mechanism includes a mounting frame 14 at one end of the support rod 5, and a roller 15 is provided between the mounting frame 14 and the conveying track 10. Connecting plates 20 are respectively installed at both ends of the mounting frame 14, and adjacent mounting frames 14 are connected through the connecting plates 20. The mounting frame 14 and the connecting plates 20 are rotatably connected.

[0025] Mounting bracket 14 is located at the bottom end of the support rod 5 near the conveyor track 10. As a key component connecting the support rod 5 and the conveyor track 10, mounting bracket 14 is equipped with rollers 15 inside or on its side. The rollers 15 clamp or roll against the guide surface of the conveyor track 10 to reduce frictional resistance and ensure smooth rolling of the mounting bracket 14 on straight and curved paths. Connecting plates 20 are installed at both ends of the mounting bracket 14. Adjacent mounting brackets 14 are connected end-to-end by connecting plates 20, forming a continuous closed-loop chain-like transmission structure. The mounting bracket 14 and the connecting plate 20 are connected by pins at their connection holes, allowing relative rotation between them. This design allows the transmission chain composed of multiple mounting brackets 14 to bend freely when passing through the arc turns of the elliptical track, avoiding the jamming phenomenon of rigid connections at turns.

[0026] One end of the mounting bracket 14 is fixedly mounted with an arc-shaped drive rack 19, and the drive rack 19 is located inside the conveying track 10. A conveying motor 11 is provided between the housing 2 and the conveying track 10, and the conveying motor 11 is located below the conveying track 10. The output end of the conveying motor 11 is equipped with a drive gear 21, and the mounting location of the drive gear 21 is provided with a placement bracket fixedly connected to the housing 2. The other end of the placement bracket is equipped with a driven gear 22, and a chain 23 is installed on the outside of the drive gear 21 and the driven gear 22. The chain 23 is meshed with the drive rack 19.

[0027] The drive rack 19 has an arc-shaped structure and is fixedly installed on the inner side of one end of the mounting bracket 14, with its overall position inside the groove of the conveyor track 10. The arc radius matches the turning radius of the conveyor track 10. The conveyor motor 11 is installed in the internal cavity of the housing 2, specifically located directly below the conveyor track 10. The conveyor motor 11 serves as the power source for the entire machine's cyclic operation and is typically a servo motor to achieve precise position control. The drive gear 21 is fixedly mounted on the output shaft end of the conveyor motor 11. Near the mounting position of the drive gear 21, a mounting bracket is fixedly connected to the inner side wall of the housing 2 to support the bearing seat of the drive gear 21. The driven gear 22 is mounted on the other end of the mounting bracket via a bearing, on the same horizontal plane as the drive gear 21 and at a certain distance. The chain 23 is a closed transmission chain, tightly fitted onto the outer tooth profiles of the drive gear 21 and the driven gear 22. When the drive gear 21 rotates, the chain 23 generates a linear transmission segment between the drive gear 21 and the driven gear 22. In this linear transmission section, the outer chain plate or chain link of chain 23 directly meshes with the tooth groove of the drive rack 19 on the mounting frame 14. This meshing transmission method eliminates the elastic slippage and chain slack vibration of belt drive, ensuring that the platform 6 on the conveyor track 10 has extremely high repeatability positioning accuracy.

[0028] Example 2: An elliptical digital direct spraying machine includes a digital spraying machine body 1 and an elliptical feeding mechanism disposed at one end of the digital spraying machine body 1. The elliptical feeding mechanism also includes a machine housing 2 and a frame 3 installed on the outside of the machine housing 2. A guardrail 4 is fixedly installed on the outside of the frame 3. A conveying track 10 is installed on the outside of the machine housing 2. At least eight support rods 5 are installed on the upper side of the conveying track 10. A conveying mechanism is provided between the support rods 5 and the conveying track 10. The support rods 5 run on the upper side of the conveying track 10 through the conveying mechanism. A platform 6 is installed at one end of the upper end of the support rods 5. A scraping mechanism 7 is installed on the upper side of the machine housing 2. One end of the scraping mechanism 7 is disposed on the upper side of the platform 6.

[0029] The chassis 2 serves as the supporting base and control center of the entire elliptical mechanism, housing the drive motor, pneumatic control valve assembly, and circuit control system. The frame 3 is fixedly installed on the outside of the chassis 2, extending the physical support range of the equipment and providing a structural framework for the operating area. The guardrail 4 is fixedly installed on the outer edge of the frame 3, providing safety protection and preventing operators from accidentally touching moving parts. The conveyor track 10, a closed elliptical ring, is installed on the upper outer surface of the chassis 2, guiding the movement of the support rods 5 and their associated platform 6. There are at least eight support rods 5, installed on the upper side of the conveyor track 10. Each support rod 5 acts as a cantilever support structure for the platform 6, with one end located above the conveyor track 10 and the other end extending outwards. The conveying mechanism is positioned between the support rods 5 and the conveyor track 10, driving the support rods 5 to circulate along the track 10. The platform 6, typically a rectangular flat plate, is installed on the upper end of the support rods 5 away from the chassis 2, used to place and secure the cut pieces or garments to be printed. The squeegee mechanism 7 is installed on the upper side of the chassis 2, with one end extending above the running path of the table 6. It is used to perform screen printing operations before and after digital printing, such as printing special effects like white ink base, thick stencil, or hot stamping paste.

[0030] At least three support strips 17 are installed on the upper side of the support rod 5, and the support strips 17 are embedded in the upper surface of the support rod 5. The platform 6 is fixedly installed on the upper side of the support strips 17.

[0031] There are at least three supporting strips 17, which are in the form of long strips or square tubes. The supporting strips 17 are embedded and fixedly embedded in the grooves or planes on the upper surface of the supporting rod 5. Through multi-point fixing, the weight pressure of the printing plate 6 is distributed. The printing plate 6 is fixed to the upper surface of the multiple supporting strips 17 by bolts, forming a large-area, highly flat printing surface.

[0032] The support rod 5 has a connecting piece 38 inside, and a correction piece 18 is installed at one end of the connecting piece 38. The correction piece 18 is located inside the support rod 5 and is connected to the support strip 17 at the middle and front ends respectively. The chassis 2 has a correction air cylinder 12 inside, and the output end of the correction air cylinder 12 is provided with a movably connected correction L-shaped connector 13. The L-shaped connector 13 is rotatably connected to one side of the chassis 2, and one end of the L-shaped connector 13 is provided with a connecting block 16. The connecting block 16 is installed on the inner wall of the support rod 5 and is connected to one end of the connecting piece 38. A spring 39 is provided between one end of the correction piece 18 and the inner wall of the support rod 5.

[0033] The connecting piece 38 is installed inside the hollow cavity of the support rod 5. One end of the correcting piece 18 is fixedly connected to the end of the connecting piece 38. The correcting piece 18 is integrally disposed inside the support rod 5 and is connected to the bottom or side wall of the support strip 17 located in the middle and front sections, respectively. This connection method allows the correcting piece 18 to perform directional pushing and pulling on a local area of ​​the platform 6. The correction pneumatic cylinder 12 is fixedly installed inside the housing 2. One end of the correction L-shaped connector 13 is movably connected to the piston rod output end of the correction pneumatic cylinder 12, and its central inflection point is rotatably connected to the side wall of the housing 2 via a rotating shaft, forming a lever structure. The other end of the L-shaped connector 13 extends to one side of the conveyor track 10. The connecting block 16 is fixedly installed at a specific position on the inner wall or side of the support rod 5. The connecting block 16 cooperates with the other end of the L-shaped connector 13 (e.g., hooking or pushing), and the connecting block 16 is connected to one end of the connecting piece 38 inside the support rod 5. Spring 39 is positioned between the other end of the correcting plate 18 and the inner wall of the support rod 5. Spring 39 provides preload to maintain the reference position of the platform 6 when no external force is applied. When the system detects that the platform 6 is deviating to the right, the corrective pneumatic cylinder 12 retracts, the L-shaped connector 13 rotates around the pivot, and its end pushes the connecting block 16 to the left, causing the connecting plate 38 and the correcting plate 18 to overcome the elastic force of spring 39, and slightly adjust the support strip 17 to the left, thereby correcting the platform 6 back to the correct position.

[0034] Example 3: An elliptical digital direct spraying machine includes a digital spraying machine body 1 and an elliptical feeding mechanism disposed at one end of the digital spraying machine body 1. The elliptical feeding mechanism also includes a machine housing 2 and a frame 3 installed on the outside of the machine housing 2. A guardrail 4 is fixedly installed on the outside of the frame 3. A conveying track 10 is installed on the outside of the machine housing 2. At least eight support rods 5 are installed on the upper side of the conveying track 10. A conveying mechanism is provided between the support rods 5 and the conveying track 10. The support rods 5 run on the upper side of the conveying track 10 through the conveying mechanism. A platform 6 is installed at one end of the upper end of the support rods 5. A scraping mechanism 7 is installed on the upper side of the machine housing 2. One end of the scraping mechanism 7 is disposed on the upper side of the platform 6.

[0035] The chassis 2 serves as the supporting base and control center of the entire elliptical mechanism, housing the drive motor, pneumatic control valve assembly, and circuit control system. The frame 3 is fixedly installed on the outside of the chassis 2, extending the physical support range of the equipment and providing a structural framework for the operating area. The guardrail 4 is fixedly installed on the outer edge of the frame 3, providing safety protection and preventing operators from accidentally touching moving parts. The conveyor track 10, a closed elliptical ring, is installed on the upper outer surface of the chassis 2, guiding the movement of the support rods 5 and their associated platform 6. There are at least eight support rods 5, installed on the upper side of the conveyor track 10. Each support rod 5 acts as a cantilever support structure for the platform 6, with one end located above the conveyor track 10 and the other end extending outwards. The conveying mechanism is positioned between the support rods 5 and the conveyor track 10, driving the support rods 5 to circulate along the track 10. The platform 6, typically a rectangular flat plate, is installed on the upper end of the support rods 5 away from the chassis 2, used to place and secure the cut pieces or garments to be printed. The squeegee mechanism 7 is installed on the upper side of the chassis 2, with one end extending above the running path of the table 6. It is used to perform screen printing operations before and after digital printing, such as printing special effects like white ink base, thick stencil, or hot stamping paste.

[0036] The squeegee mechanism 7 includes a support frame 27 fixedly installed at the top of the machine housing 2, and a support base 28 is installed inside the support frame 27. A long plate 701 is installed on one side of the support base 28, and a sliding plate 24 is provided at the bottom of the long plate 701. Two sets of squeegee pneumatic cylinders 33 are installed at both ends of the sliding plate 24, and the output ends of the squeegee pneumatic cylinders 33 are respectively provided with a squeegee 31 for applying liquid and a squeegee 32 for recovering liquid. A squeegee frame 8 is installed on the upper side of the machine frame 3, and the squeegee 31 and the squeegee 32 are set on the inner wall of the squeegee frame 8.

[0037] The support frame 27 is in the form of a gantry frame, with its bottom fixedly mounted on the top of the chassis 2. The support base 28 is mounted on the inner side or top of the support frame 27 to support the weight of the printing components. The placement plate 701 is a long strip structure, mounted on one edge of the support base 28. The moving plate 24 is slidably connected to the bottom plane of the placement plate 701 via a slide rail slider assembly. There are two sets of squeegee cylinders 33, mounted at both ends of the moving plate 24. A squeegee 31, typically a high-hardness polyurethane squeegee, is mounted on the piston rod output end of one set of squeegee cylinders 33 and is used to transfer the ink through the screen onto the fabric. A squeegee 32, typically a metal or hard plastic ink return blade, is mounted on the piston rod output end of the other set of squeegee cylinders 33 and is used to scrape residual ink back to its original position. The printing frame 8 is mounted and fixed on the upper side of the frame 3, above the table 6. When the scraper 31 and the scraper blade 32 are in motion, their lower cutting edges are in close contact with the bottom surface of the inner wall of the printing frame 8 or the surface of the screen.

[0038] Support blocks 26 are installed at both ends of the squeegee frame 8, and the support blocks 26 are respectively set at the bottom of the long plate 701. An adjusting air pressure cylinder 9 is installed on the upper side of the long plate 701, and the two ends of the adjusting air pressure cylinder 9 are rotatably connected to the top of the support frame 27 and the upper side of the long plate 701, respectively. A scale 25 is provided on the outer side of the long plate 701.

[0039] There are two support blocks 26, which are installed on the top of the left and right side walls of the scratch frame 8 respectively.

[0040] When the squeegee mechanism 7 descends, the bottom ends of the long plate 701 rest precisely on the corresponding support blocks 26, serving as a height reference for the squeegee operation and ensuring uniform squeegee pressure. An adjusting pneumatic cylinder 9 is installed on the upper side of the long plate 701. The tail of the cylinder body of the adjusting pneumatic cylinder 9 is rotatably connected to the top of the support frame 27, and the front end of its piston rod is rotatably connected to the upper surface of the long plate 701 via a spherical bearing. By adjusting the extension and retraction of the pneumatic cylinder 9, the overall lifting height of the long plate 701, along with the moving plate 24, can be controlled. A scale 25 is installed on the outer surface of the long plate 701. The operator can quantify the initial position or travel range of the moving plate 24 by observing the scale 25.

[0041] The interior of the long plate 701 is provided with a sliding track 34, and a sliding block 37 is installed inside the sliding track 34. The sliding block 37 is fixedly connected to the upper side of the bottom movable plate 24. Synchronous wheels 35 are installed at both ends of the inner wall of the sliding track 34, and a synchronous belt 36 is provided on the outer side of the synchronous wheel 35. The synchronous belt 36 is fixedly connected to the interior of the sliding block 37.

[0042] A sliding track 34 is either opened or fixed within the hollow cavity of the long plate 701. A sliding block 37 is slidably connected to the internal groove of the sliding track 34. The bottom of the sliding block 37 is fixedly connected to the upper surface of the movable plate 24 located outside the long plate 701 by screws. When the sliding block 37 moves within the track, it drives the movable plate 24 to move synchronously. Two synchronous pulleys 35 are installed at the left and right ends of the inner wall of the sliding track 34 via bearings. A synchronous belt 36 is in a closed loop shape and is tensioned and sleeved on the outside of the two synchronous pulleys 35. A clamping plate is provided inside the sliding block 37 to tightly clamp and fix a section of the tooth surface of the synchronous belt 36. Therefore, the rotational motion of the synchronous belt 36 can be directly converted into the linear reciprocating motion of the sliding block 37.

[0043] A drive motor 29 is installed on the outer side of the long plate 701, and a coupling 30 is installed at the output end of the drive motor 29. The coupling 30 penetrates the inner wall of the long plate 701 and is fixedly connected to one side of the synchronous pulley 35.

[0044] The drive motor 29 is fixedly mounted on the outer wall panel of the long plate 701, serving as the power source for the scraping movement. One end of the coupling 30 is connected to the output shaft of the drive motor 29, and the other end passes through the side wall panel of the long plate 701 and is fixedly connected to the side center shaft hole of one of the synchronous pulleys 35. The coupling 30 serves to transmit torque and compensate for installation coaxiality errors.

[0045] Working principle: First, the operator lays the fabric piece to be printed flat and fixes it on the upper surface of the table 6. After starting the equipment, the conveyor motor 11 at the bottom of the machine box 2 starts to run. The conveyor motor 11 drives the drive gear 21 to rotate, and the drive gear 21 transmits power to the driven gear 22 through the chain 23, thereby driving the entire closed-loop chain 23 to move stably in the conveyor track 10.

[0046] During movement, the chain 23's links engage with the arc-shaped drive rack 19 mounted at one end of the mounting frame 14. As the chain 23 is pulled, the drive rack 19 causes the mounting frame 14 to move along the trajectory of the conveyor track 10. Because adjacent mounting frames 14 are rotatably connected by connecting plates 20, multiple platforms 6 can be closely arranged and smoothly pass through the straight sections and arc-shaped curves of the elliptical track.

[0047] As the table plate 6 continues to move below the squeegee mechanism 7, the adjusting pneumatic cylinder 9 pushes the placement plate 701 downward, causing the squeegee frame 8 to press firmly onto the cut piece or screen on the surface of the table plate 6. The drive motor 29 starts, driving the squeegee pneumatic cylinders 33 below the moving plate 24 to reciprocate via the synchronous belt 36. One set of squeegee pneumatic cylinders 33 extends the squeegee 31 to apply the slurry, and retracts the squeegee 31 upon return; the other set of squeegee pneumatic cylinders 33 extends the squeegee 32 to collect the slurry.

[0048] After the scraping is completed, the table plate 6, carrying the cut piece, moves to below the digital inkjet printer body 1, and the digital printhead prints the pattern. During the printing process, if a slight deviation of the table plate 6 is detected, the correction air cylinder 12 is activated, pulling the connecting block 16 through the L-shaped connector 13. This, in turn, compresses the spring 39 through the connecting piece 38 and the correction piece 18, applying a lateral fine-tuning force to the support strip 17 to ensure that the table plate 6 is in a precise parallel position, thus completing one screen printing process.

[0049] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0050] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0051] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An elliptical digital direct spraying machine, comprising a digital spraying machine body (1) and an elliptical feeding mechanism disposed at one end of the digital spraying machine body (1), characterized in that: The elliptical feeding mechanism also includes a housing (2) and a frame (3) installed on the outside of the housing (2). A guardrail (4) is fixedly installed on the outside of the frame (3). A conveying track (10) is installed on the outside of the housing (2). At least eight support rods (5) are installed on the upper side of the conveying track (10). A conveying mechanism is provided between the support rods (5) and the conveying track (10). The support rods (5) run on the upper side of the conveying track (10) through the conveying mechanism. A platform (6) is installed on one end of the upper end of the support rods (5). A scraping mechanism (7) is installed on the upper side of the housing (2). One end of the scraping mechanism (7) is set on the upper side of the platform (6).

2. The elliptical digital direct injection machine according to claim 1, characterized in that: The conveying mechanism includes a mounting frame (14) at one end of a support rod (5), and a roller (15) is provided between the mounting frame (14) and the conveying track (10). A connecting plate (20) is installed at both ends of the mounting frame (14), and adjacent mounting frames (14) are connected through the connecting plate (20). The mounting frame (14) and the connecting plate (20) are rotatably connected.

3. An elliptical digital direct injection machine according to claim 2, characterized in that: One end of the mounting bracket (14) is fixedly mounted with an arc-shaped drive rack (19), and the drive rack (19) is located inside the conveying track (10). A conveying motor (11) is provided between the housing (2) and the conveying track (10), and the conveying motor (11) is located below the conveying track (10). The output end of the conveying motor (11) is equipped with a drive gear (21), and the drive gear (21) is mounted with a placement bracket fixedly connected to the housing (2). The other end of the placement bracket is equipped with a driven gear (22), and a chain (23) is installed on the outside of the drive gear (21) and the driven gear (22). The chain (23) meshes with the drive rack (19).

4. An elliptical digital direct injection machine according to claim 1, characterized in that: At least three support strips (17) are installed on the upper side of the support rod (5), and the support strips (17) are embedded in the upper surface of the support rod (5). The platform (6) is fixedly installed on the upper side of the support strips (17).

5. An elliptical digital direct injection machine according to claim 4, characterized in that: The support rod (5) is provided with a connecting piece (38) inside, and a correction piece (18) is installed at one end of the connecting piece (38). The correction piece (18) is located inside the support rod (5) and is connected to the support strip (17) at the middle and front ends respectively. The chassis (2) is provided with a correction air cylinder (12) inside, and the output end of the correction air cylinder (12) is provided with a movably connected correction L-shaped connector (13). The L-shaped connector (13) is rotatably connected to one side of the chassis (2), and a connecting block (16) is provided at one end of the L-shaped connector (13). The connecting block (16) is installed on the inner wall of the support rod (5), and the connecting block (16) is connected to one end of the connecting piece (38). A spring (39) is provided between one end of the correction piece (18) and the inner wall of the support rod (5).

6. An elliptical digital direct injection machine according to claim 1, characterized in that: The scraping mechanism (7) includes a support frame (27) fixedly installed at the top of the machine box (2), and a support base (28) is installed inside the support frame (27). A long plate (701) is installed on one side of the support base (28), and a sliding plate (24) is provided at the bottom of the long plate (701). Two sets of scraping air cylinders (33) are installed at both ends of the sliding plate (24) respectively. The output end of the scraping air cylinder (33) is provided with a scraper (31) for applying liquid and a scraper (32) for recovering liquid. A scraping frame (8) is installed on the upper side of the machine frame (3), and the scraper (31) and scraper (32) are set on the inner wall of the scraping frame (8).

7. An elliptical digital direct injection machine according to claim 6, characterized in that: Support blocks (26) are installed at both ends of the scraping frame (8), and the support blocks (26) are respectively set at the bottom of the placement plate (701). An adjusting air pressure cylinder (9) is installed on the upper side of the placement plate (701), and the two ends of the adjusting air pressure cylinder (9) are rotatably connected to the top of the support frame (27) and the upper side of the placement plate (701). A scale (25) is provided on the outer side of the placement plate (701).

8. An elliptical digital direct injection machine according to claim 7, characterized in that: The interior of the long plate (701) is provided with a sliding track (34), and a sliding block (37) is installed inside the sliding track (34). The sliding block (37) is fixedly connected to the upper side of the bottom moving plate (24). Synchronous wheels (35) are installed at both ends of the inner wall of the sliding track (34), and a synchronous belt (36) is provided on the outer side of the synchronous wheel (35). The synchronous belt (36) is fixedly connected to the interior of the sliding block (37).

9. An elliptical digital direct injection printer according to claim 8, characterized in that: A drive motor (29) is installed on the outside of the placement plate (701), and a coupling (30) is installed at the output end of the drive motor (29). The coupling (30) penetrates the inner wall of the placement plate (701), and the coupling (30) is fixedly connected to one side of the synchronous pulley (35).

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