Ink-jet printing device for ceramic tiles

Abstract

The invention relates to an ink-jet printing device for ceramic tiles, and relates to the technical field of ceramic tile processing. The rack is provided with an ink system, a plurality of nozzles connected with the ink system, a conveying belt for conveying ceramic tiles, and a control system for controlling the spraying frequency, the spraying amount and the spraying position of the nozzles; and the self-adaptive positioning mechanism is arranged on the rack and used for clamping and correcting the edges of the two sides, in the width direction of the conveying belt, of the ceramic tiles of various specifications and sizes and automatically avoiding protrusions on the ceramic tiles during clamping and correcting. The ceramic tile splicing device has the advantages that patterns are not prone to dislocation when the ceramic tiles are spliced, and the splicing accuracy of the whole set of ceramic tiles is improved.

Description

Technical Field

[0001] The present application relates to the technical field of ceramic tile processing, and in particular to an inkjet printing device for ceramic tiles. Background Art

[0002] Traditional ceramic tile printing technology mostly uses screen printing, roller printing and other methods. Although it can achieve a certain degree of pattern diversity, it is inefficient and difficult to meet the needs of large-scale personalized customization. In recent years, inkjet printing technology has gradually been introduced into the decoration of ceramic tiles. The inkjet printing device can print high-precision patterns on the surface of ceramic tiles and can print digital patterns directly on the ceramic tile body, which not only improves production efficiency, but also realizes more complex pattern design, greatly enriching the appearance characteristics of the product.

[0003] At present, the inkjet printing device for ceramic tiles mainly includes a core component nozzle responsible for accurately spraying ink onto the surface of ceramic tiles, an ink system responsible for storing and supplying ceramic inks of different colors (including ink tanks, ink pipelines, filters and ink pumps, etc.), a control system for controlling the spraying frequency, spraying volume and spraying position of the nozzle, a conveying system for sending tiles in and out of the inkjet device, a positioning system for correcting the position of tiles during the inkjet process so that the inkjet pattern is not easily misplaced (including a correction plate and a drive cylinder), and a drive device and a lifting device for driving the nozzle to move.

[0004] There are multiple tiny nozzles inside the nozzle. Through electronic control, the amount and position of ink spray can be precisely controlled to achieve high-resolution pattern printing. Especially with the gradual improvement of the quality of ceramic tile patterns, ceramic tile products composed of multiple tiles spliced ​​into a large pattern have gradually entered people's field of vision. Large-pattern ceramic tile products composed of multiple tiles have extremely high requirements for the precision of splicing each tile. Any deviation in the pattern position on any tile will cause defects in the entire set of tiles. However, occasionally, bulges and burrs will appear locally around the ceramic tile blank. The existing correction method of using a driving cylinder to drive the correction plate to clamp and correct the ceramic tile blank will be affected by the local bulges (bumps, bumps or burrs, etc.) on both sides of the ceramic tile blank, causing the ceramic tile blank to deflect at a certain angle, causing the pattern of the tiles to be misaligned when splicing, affecting the precision of the entire set of tiles when splicing. Summary of the invention

[0005] In order to prevent the patterns of ceramic tiles from being misaligned when they are spliced ​​and to improve the accuracy of splicing a whole set of ceramic tiles, the present application provides an inkjet printing device for ceramic tiles.

[0006] The present application provides an inkjet printing device for ceramic tiles, which adopts the following technical solution: An inkjet printing device for ceramic tiles, comprising: A frame, on which an ink system, a plurality of nozzles connected to the ink system, a conveyor belt for conveying ceramic tiles, and a control system for controlling the spraying frequency, spraying amount and spraying position of the nozzles are arranged; The adaptive positioning mechanism is arranged on the frame and is used to clamp and correct the edges of ceramic tiles of various specifications and sizes on both sides along the width direction of the conveyor belt, and automatically avoid the protrusions on the ceramic tiles during clamping and correction.

[0007] By adopting the above technical solution, when the ceramic tile is subjected to inkjet processing, first, the ceramic tile body is sent to the inkjet printing device by the conveyor belt. When the ceramic tile reaches the positioning area, the adaptive positioning mechanism is started, and the adaptive positioning mechanism clamps and corrects the two sides of the ceramic tile. At the same time, the protrusions on the ceramic tile are automatically avoided during the clamping correction, so that the ceramic tile body is not easily deflected. Then, the control system adjusts the position and injection parameters of the nozzle according to the preset pattern data, including the injection frequency, injection amount and injection position, to ensure the accuracy of inkjet and the clarity of the pattern. Then, the nozzle moves along the surface of the ceramic tile. The machine moves and precisely sprays ink onto the ceramic tile to form a high-resolution pattern. After printing is completed, the conveyor belt sends the ceramic tile to the unloading area, and a printing process is completed. The adaptive positioning mechanism can enable the ceramic tile to be precisely positioned before inkjet printing. Even if there are local protrusions on the side of the tile, it can adaptively avoid the protrusions, so that the ceramic tile can be accurately positioned, which makes it easier for the pattern of the ceramic tile to be less likely to be misaligned during subsequent splicing, thereby improving the accuracy of the splicing of the entire set of ceramic tiles. The adaptive positioning mechanism can handle tiles of different sizes, thereby improving the flexibility and applicability of the inkjet printing equipment.

[0008] Optionally, the adaptive positioning mechanism includes: Two support frames are provided, the two support frames are symmetrically arranged on the frame, and the two support frames are respectively located on both sides of the conveyor belt in the width direction; An adaptive clamping assembly is arranged on the support frame, and is arranged in multiple numbers and evenly spaced along the length direction of the support frame, and is used to clamp the edge of the ceramic tile and automatically avoid the protrusions on the ceramic tile; A self-locking distance adjustment component is provided between the support frame and the frame, and is used to adjust the distance between the two support frames according to the specifications of the ceramic tiles, and lock the position of the support frames after adjustment; The synchronous separation component is arranged between the plurality of adaptive clamping components and is used for adjusting the distance between two adjacent adaptive clamping components.

[0009] By adopting the above technical solution, when it is necessary to process ceramic tiles of different widths and specifications, the staff can adjust the distance between the two support frames according to the width of the ceramic tiles and through the self-locking distance adjustment component to ensure that the adaptive clamping component can quickly clamp the two sides of the ceramic tiles. After the distance adjustment between the two support frames is completed, the self-locking distance adjustment component locks the position of the support frame to prevent displacement during the printing process; multiple adaptive clamping components are evenly spaced along the length direction of the support frame. When the ceramic tile reaches the positioning area, the adaptive clamping component starts to clamp the edge of the ceramic tile, and the raised part of the ceramic tile can be automatically avoided during the clamping process, so that the ceramic tile is not easy to deflect, ensuring the precise position of the ceramic tile before inkjet printing; when it is necessary to process different length specifications When the size of ceramic tiles is changed, the synchronous separation component can adjust the distance between two adjacent adaptive clamping components according to the length of the ceramic tiles, so as to clamp and position the ceramic tiles with different length specifications and sizes; wherein the self-locking distance adjustment component and the synchronous separation component are used in conjunction with each other, so that the inkjet printing device can quickly adapt to the ceramic tiles with different lengths or widths and sizes, thereby improving the flexibility and applicability of the equipment and reducing the downtime caused by changing the specifications of tiles. In addition, the automatic avoidance function of the adaptive clamping component ensures the precise position of the tile before inkjet printing, and even if there are local protrusions on the surface of the tile, it can automatically avoid them to avoid pattern misalignment, thereby significantly improving the accuracy of large-scale pattern splicing, meeting the market demand for high-quality ceramic tile products, and reducing scrap rate and production costs.

[0010] Optionally, the adaptive clamping assembly comprises: A moving frame is slidably connected to the supporting frame along the moving direction of the conveyor belt; Racks, two of which are provided, the two racks are symmetrically slidably connected to the moving frame along the width direction of the transmission belt, and the two racks are spaced apart; A push rod is slidably connected to the moving frame along the width direction of the transmission belt, and the push rod is located between the two racks; A gear is rotatably connected to one end of the push rod, and the gear is meshed with the two racks at the same time; The synchronous driving member is arranged between the push rods in the multiple adaptive clamping assemblies and is used to drive the multiple push rods to move synchronously.

[0011] By adopting the above technical solution, when the ceramic tile is clamped and positioned by the adaptive clamping assembly, the synchronous driving part is first started, and then the synchronous driving part drives all the push rods to move synchronously to the side close to the width direction of the ceramic tile, and the push rod synchronously drives the gear and two racks to move. When the end of one of the racks on the moving frame abuts against the local protrusion on the surface of the ceramic tile, it will stop moving. At this time, the push rod will drive the gear to rotate, and the gear will drive the other rack to continue to move toward the side close to the ceramic tile until the end of the rack abuts against and presses against the side of the ceramic tile, thereby automatically avoiding the protrusion obstacle on the side of the ceramic tile and realizing accurate clamping and positioning of the ceramic tile; when the clamping and positioning of the ceramic tile needs to be released, the synchronous driving part first drives the push rod to move away from the ceramic tile. One side of the tile moves, and the push rod synchronously drives the gear and two racks to move. The rack on the mobile frame that abuts against the protrusion on the surface of the ceramic tile will first abut against the mobile frame to reset and stop moving. At this time, the push rod will drive the gear to rotate when it continues to reset and move, and the gear drives the other rack to continue to move to the side away from the side of the ceramic tile until both racks abut against the mobile frame to reset and stop moving. The adaptive clamping assembly can achieve high-precision lateral movement to ensure the stability and accuracy of clamping on both sides of the ceramic tile, avoid tile deflection due to the protrusion at the clamping point, and reduce the scrap rate. The synchronous drive can ensure that all adaptive clamping assemblies are started at the same time, thereby speeding up the clamping and positioning speed of the ceramic tile, reducing the clamping time and improving production efficiency.

[0012] Optionally, the synchronous driving member includes: A synchronization rod is slidably connected to the support frame and simultaneously penetrates the multiple moving frames; A driving cylinder is arranged at one end of the synchronization rod; The electric clamping claw is slidably connected to the moving frame along the length direction of the synchronization rod, and the number of the electric clamping claws is multiple and corresponds to the push rods on the multiple moving frames one by one; The driving rod is arranged between the electric clamp and the corresponding push rod. The middle part of the driving rod is hinged to the movable frame. One end of the driving rod is hinged to the electric clamp and the other end is provided with a waist-shaped groove. A driving column is fixed on the push rod, and the driving column can rotate and slide in the waist-shaped groove.

[0013] By adopting the above technical scheme, when it is necessary to clamp and position the ceramic tiles, the driving cylinder is started, and the piston rod of the driving cylinder pushes the synchronization rod to drive all the electric clamps to move along the length direction of the synchronization rod. At the same time, the electric clamps drive the driving rod to rotate, and the driving rod drives the driving column and the push rod to move along the width direction of the transmission belt toward the side close to the ceramic tiles, thereby clamping the ceramic tiles; when it is necessary to release the clamping of the ceramic tiles, the piston rod of the driving cylinder contracts and drives the synchronization rod to move in the opposite direction, thereby driving the driving column and the push rod to move along the width direction of the transmission belt toward the side away from the ceramic tiles, thereby releasing the clamping of the ceramic tiles; when the spacing between adjacent moving frames is adjusted by the synchronous separation assembly, the electric clamps can quickly release the clamping of the synchronization rod, thereby facilitating the rapid adjustment of the spacing between adjacent moving frames.

[0014] Optionally, the synchronization rod is provided with anti-slip grooves on the outer side along its length direction.

[0015] By adopting the above technical solution, the anti-slip pattern is used to increase the friction between the synchronization rod and the electric clamp, so that the synchronization rod can stably transmit power, prevent slipping during movement, and avoid the problem of unstable clamping or reduced positioning accuracy caused by sliding.

[0016] Optionally, the synchronous separation component includes: A connecting rod, wherein the middle position of the connecting rod is hinged to the moving frame, and two connecting rods are arranged on each moving frame, the two connecting rods are arranged crosswise, the two connecting rods on adjacent moving frames correspond to each other, and the corresponding two connecting rods on adjacent moving frames are hinged to each other; The regulating cylinder is arranged on the supporting frame, and the end of the piston rod of the regulating cylinder is fixedly connected to a moving frame at the end of the plurality of moving frames.

[0017] By adopting the above technical scheme, when it is necessary to inkjet process ceramic tiles of different lengths and sizes, and adjust the distance between two adjacent adaptive clamping assemblies through the synchronous separation assembly, first start the adjustment cylinder, and then adjust the piston rod of the cylinder to drive the mobile frame at the end to slide along the moving direction of the conveyor belt. Because the connecting rod is designed as a cross-hinged structure, when one mobile frame moves, it can drive the adjacent mobile frames to move synchronously through the hinge action of the connecting rod, thereby realizing equidistant synchronous movement between multiple mobile frames, thereby realizing the distance adjustment between multiple adaptive clamping assemblies to adapt to ceramic tiles of different lengths and sizes; wherein the synchronous separation assembly can quickly adapt to ceramic tiles of different lengths and sizes by adjusting the linkage effect of the cylinder and the connecting rod, thereby improving the flexibility and applicability of the equipment.

[0018] Optionally, the regulating cylinder is a self-locking cylinder.

[0019] By adopting the above technical solution, the self-locking cylinder does not need continuous air supply and can stably maintain the set position for a long time in the absence of air pressure. On the one hand, it avoids the change of the mobile rack position caused by air pressure fluctuations or system air outage, thereby improving the stability and reliability of the equipment; on the other hand, it reduces energy consumption and reduces operating costs.

[0020] Optionally, the number of the movable racks is an odd number, and the movable racks in the middle are fixedly connected to the supporting racks.

[0021] By adopting the above technical solution, the adjusting cylinder drives the moving frame on one side to move, and the moving frame on the other side will be automatically adjusted through the linkage effect of the connecting rod, thereby reducing the control complexity; and the odd number of moving frames makes the number of moving frames on both sides equal, and the moving frame in the middle position is fixedly connected to the supporting frame to form a stable fulcrum, which can effectively disperse and balance the force of the moving frames on both sides, improve the structural symmetry and balance of the entire synchronous separation assembly, and improve the structural stability of the equipment.

[0022] Optionally, the self-locking distance adjustment component includes: A pitch-adjusting screw, rotatably connected to the frame; A pitch-adjusting sleeve, a threaded sleeve is arranged outside the pitch-adjusting screw, and one end of the pitch-adjusting sleeve is rotatably connected to the support frame; A guide telescopic rod is fixed between the frame and the support frame; The self-locking driving component is arranged at one end of the pitch adjusting screw and is used for driving the pitch adjusting screw to rotate and locking the pitch adjusting screw.

[0023] By adopting the above technical scheme, when it is necessary to inkjet process ceramic tiles of different widths and sizes and adjust the position of the support frame through the self-locking pitch-adjusting assembly, the pitch-adjusting screw is first driven to rotate by the self-locking driving component, and the pitch-adjusting sleeve moves along the axial direction of the pitch-adjusting screw under the action of the guide telescopic rod, while driving the support frame to move; the self-locking pitch-adjusting assembly can adapt to ceramic tiles of different lengths and sizes, thereby improving the adaptability and flexibility of the equipment, and through the cooperation of the pitch-adjusting screw, the pitch-adjusting sleeve and the self-locking driving component, the set position of the pitch-adjusting screw can be locked to prevent the pitch-adjusting screw from changing position due to external forces such as vibration of the device, thereby ensuring the stability and accuracy of the position of the support frame.

[0024] Optionally, the self-locking drive component includes: The worm wheel is fixedly sleeved on the outside of the pitch-adjusting screw; A worm, rotatably connected to the frame and meshing with the worm wheel; The driving motor is arranged at one end of the worm.

[0025] By adopting the above technical solution, when the driving motor is started, the power of the driving motor is transmitted to the worm through the output shaft, and the worm starts to rotate. The rotation of the worm will drive the worm wheel to rotate, and then drive the pitch-adjusting screw to rotate together; when the driving motor stops working, the self-locking characteristics of the worm wheel will prevent the pitch-adjusting screw from rotating in the opposite direction, thereby keeping the pitch-adjusting screw in the set position for a long time without power input, thereby ensuring the stability of the support frame position.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The adaptive positioning mechanism can accurately position the ceramic tiles before inkjet printing. Even if there are local protrusions on the side of the tile, it can adaptively avoid the protrusions, so that the ceramic tiles are accurately aligned, which makes it easier for the patterns of the ceramic tiles to be less likely to be misaligned during subsequent splicing, thereby improving the accuracy of the splicing of the entire set of ceramic tiles; and the adaptive positioning mechanism can handle tiles of different sizes, improving the flexibility and applicability of the inkjet printing equipment; 2. Through the use of the self-locking distance adjustment component and the synchronous separation component, the inkjet printing device can quickly adapt to ceramic tiles of different lengths or widths, which improves the flexibility and applicability of the equipment and reduces the downtime caused by changing the specifications of tiles. In addition, the automatic avoidance function of the adaptive clamping component ensures the precise position of the tile before inkjet printing. Even if there are local protrusions on the surface of the tile, it can automatically avoid them to avoid pattern dislocation, thereby significantly improving the accuracy of large-scale pattern splicing, meeting the market demand for high-quality ceramic tile products, and reducing scrap rate and production costs; 3. The adaptive clamping assembly can achieve high-precision lateral movement, ensure the stability and accuracy of the clamping of the ceramic tiles on both sides, avoid the deflection of the tiles due to the protrusion of the clamping point, and reduce the scrap rate. The synchronous drive can ensure that all adaptive clamping assemblies are started at the same time, thereby speeding up the clamping and positioning speed of the ceramic tiles, reducing the clamping time and improving production efficiency. When the spacing between adjacent mobile racks is adjusted by the synchronous separation assembly, the electric clamp can quickly release the clamping of the synchronous rod, thereby facilitating the rapid adjustment of the spacing between adjacent mobile racks. 4. By adjusting the linkage effect of the cylinder and the connecting rod in the synchronous separation component, the synchronous separation component can quickly adapt to ceramic tiles of different lengths and sizes, thereby improving the flexibility and applicability of the equipment; and the self-locking cylinder does not require continuous air supply and can stably maintain the set position for a long time in the absence of air pressure. On the one hand, it avoids the change of the mobile frame position caused by air pressure fluctuations or system air outages, thereby improving the stability and reliability of the equipment; on the other hand, it reduces energy consumption and reduces operating costs.

[0027] 5. The self-locking pitch-adjusting assembly can adapt to ceramic tiles of different lengths and sizes, improving the adaptability and flexibility of the equipment. Through the cooperation of the pitch-adjusting screw, the pitch-adjusting sleeve and the self-locking drive component, the set position of the pitch-adjusting screw can be locked to prevent the pitch-adjusting screw from changing position due to external forces such as vibration of the device. In addition, the pitch-adjusting screw can be kept in the set position for a long time without power input, ensuring the stability of the support frame position. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of the structure of the inkjet printing device in the present application; Figure 2 is a schematic diagram showing a partial structure of an inkjet printing device; Figure 3 is a schematic diagram showing the structure of an adaptive positioning mechanism; Figure 4 is a schematic diagram showing the structure of the adaptive clamping assembly when avoiding the protrusion on the ceramic tile; Figure 5 It is a structural schematic diagram showing a self-locking distance adjustment component.

[0029] Explanation of the reference numerals: 1. frame; 2. ink system; 3. conveyor belt; 4. adaptive positioning mechanism; 41. support frame; 42. adaptive clamping assembly; 421. moving frame; 422. rack; 423. push rod; 424. gear; 425. synchronous driving member; 4251. synchronous rod; 4252. driving cylinder; 4253. electric clamp; 4254. driving rod; 4255. waist groove; 4256. driving column; 43. self-locking pitch adjusting assembly; 431. pitch adjusting screw; 432. pitch adjusting sleeve; 433. guide telescopic rod; 434. self-locking driving member; 4341. worm gear; 4342. worm; 4343. driving motor; 44. synchronous separation assembly; 441. connecting rod; 442. adjusting cylinder; 5. protrusion. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-Figure 5 This application is described in further detail.

[0031] The present application embodiment discloses an inkjet printing device for ceramic tiles. Figure 1 and Figure 2 The inkjet printing device includes a frame 1, on which an ink system 2, a plurality of nozzles connected to the ink system 2, a conveyor belt 3 for conveying ceramic tiles, and a control system for controlling the spraying frequency, spraying amount and spraying position of the nozzle are arranged. The frame 1 is also provided with an adaptive positioning mechanism 4, which is used to clamp and correct the edges of ceramic tiles of various specifications and sizes along the width direction of the conveyor belt 3 on both sides, and automatically avoid the protrusions 5 on the ceramic tiles during the clamping and correction.

[0032] When the ceramic tile is subjected to inkjet processing, first, the ceramic tile blank is sent to the inkjet printing device by the conveyor belt 3. When the ceramic tile reaches the positioning area, the adaptive positioning mechanism 4 is started, and the adaptive positioning mechanism 4 clamps and corrects the two sides of the ceramic tile. At the same time, the protrusion 5 on the ceramic tile is automatically avoided during the clamping correction, so that the ceramic tile blank is not easy to be skewed. Then the control system adjusts the position and injection parameters of the nozzle according to the preset pattern data, including the injection frequency, injection amount and injection position, to ensure the accuracy of the inkjet and the clarity of the pattern. Then the nozzle moves along the surface of the ceramic tile, and the ink is accurately sprayed onto the ceramic tile to form a high-resolution pattern. After the printing is completed, the conveyor belt 3 sends the ceramic tile to the unloading area, and a printing process can be completed. Among them, the adaptive positioning mechanism 4 can make the ceramic tile accurately positioned before inkjet printing. Even if a local protrusion 5 appears on the side of the tile, it can also adaptively avoid the protrusion 5, so that the ceramic tile is accurately aligned, and then it is convenient for the ceramic tile to be less likely to be misaligned during the subsequent splicing, and the accuracy of the whole set of ceramic tiles when splicing is improved. Furthermore, the adaptive positioning mechanism 4 can process tiles of different sizes, thereby improving the flexibility and applicability of the inkjet printing device.

[0033] Reference Figure 1 and Figure 2 The adaptive positioning mechanism 4 includes two support frames 41 symmetrically arranged on the frame 1, and the two support frames 41 are respectively located on both sides of the width direction of the conveyor belt 3. A plurality of adaptive clamping components 42 are arranged on the support frame 41, and the plurality of adaptive clamping components 42 are evenly spaced along the length direction of the support frame 41. The adaptive clamping components 42 are used to clamp the edges of the ceramic tiles and automatically avoid the protrusions 5 on the ceramic tiles. A self-locking distance adjustment component 43 is arranged between the support frame 41 and the frame 1. The self-locking distance adjustment component 43 is used to adjust the distance between the two support frames 41 according to the specifications of the ceramic tiles, and lock the adjusted position of the support frame 41. A synchronous separation component 44 is arranged between the plurality of adaptive clamping components 42, and the synchronous separation component 44 is used to adjust the distance between two adjacent adaptive clamping components 42.

[0034] When ceramic tiles of different widths and specifications need to be processed, the staff can adjust the distance between the two support frames 41 according to the width of the ceramic tiles through the self-locking distance adjustment component 43 to ensure that the adaptive clamping component 42 can quickly clamp the two sides of the ceramic tiles. After the distance between the two support frames 41 is adjusted, the self-locking distance adjustment component 43 locks the position of the support frame 41 to prevent displacement during the printing process. Multiple adaptive clamping components 42 are evenly spaced along the length of the support frame 41. When the ceramic tile reaches the positioning area, the adaptive clamping component 42 starts to clamp the edge of the ceramic tile, and the protrusion 5 of the ceramic tile can be automatically avoided during the clamping process, so that the ceramic tile is not easily deflected, ensuring the precise position of the ceramic tile before inkjet printing.

[0035] When ceramic tiles of different lengths and sizes need to be processed, the synchronous separation component 44 can adjust the distance between two adjacent adaptive clamping components 42 according to the length of the ceramic tiles, so as to clamp and position the ceramic tiles of different lengths and sizes. The use of the self-locking distance adjustment component 43 and the synchronous separation component 44 enables the inkjet printing device to quickly adapt to ceramic tiles of different lengths or widths, thereby improving the flexibility and applicability of the equipment and reducing the downtime caused by changing the specifications of the tiles. In addition, the automatic avoidance function of the adaptive clamping component 42 ensures the precise position of the tile before inkjet printing. Even if there are local protrusions 5 on the surface of the tile, it can automatically avoid them to avoid pattern misalignment, thereby significantly improving the accuracy of large-scale pattern splicing, meeting the market demand for high-quality ceramic tile products, and reducing scrap rates and production costs.

[0036] Reference Figure 3 and Figure 4 The adaptive clamping assembly 42 includes a moving frame 421 that is slidably connected to the support frame 41 along the moving direction of the conveyor belt 3. The moving frame 421 is symmetrically slidably connected to two racks 422 along the width direction of the transmission belt, and the two racks 422 are arranged at intervals. The moving frame 421 is slidably connected to a push rod 423 along the width direction of the transmission belt, and the push rod 423 is located between the two racks 422. One end of the push rod 423 is rotatably connected to a gear 424, and the gear 424 is meshed with the two racks 422 at the same time. A synchronous driving member 425 is arranged between the push rods 423 in the multiple adaptive clamping assemblies 42, and the synchronous driving member 425 is used to drive the multiple push rods 423 to move synchronously.

[0037] When the ceramic tile is clamped and positioned by the adaptive clamping assembly 42, the synchronous driving member 425 is first started, and then the synchronous driving member 425 drives all the push rods 423 to move synchronously to the side close to the width direction of the ceramic tile. The push rod 423 synchronously drives the gear 424 and the two racks 422 to move, and stops moving when the end of one of the racks 422 on the moving frame 421 abuts against the local protrusion 5 on the surface of the ceramic tile. At this time, the push rod 423 drives the gear 424 to rotate, and the gear 424 drives the other rack 422 to continue to move to the side close to the ceramic tile until the end of the rack 422 abuts against and presses against the side of the ceramic tile, thereby automatically avoiding the protrusion 5 on the side of the ceramic tile and achieving accurate clamping and positioning of the ceramic tile.

[0038] When the clamping and positioning of the ceramic tile needs to be released, first the synchronous driving member 425 drives the push rod 423 to move to the side away from the ceramic tile, and the push rod 423 synchronously drives the gear 424 and the two racks 422 to move, and the rack 422 on the mobile frame 421 that abuts against the protrusion 5 on the surface of the ceramic tile will first abut against the mobile frame 421 to reset and stop moving. At this time, the push rod 423 will drive the gear 424 to rotate when continuing to reset and move, and the gear 424 drives another rack 422 to continue to move to the side away from the side of the ceramic tile until both racks 422 abut against the mobile frame 421 to reset and stop moving. Among them, the adaptive clamping assembly 42 can achieve high-precision lateral movement, ensure the stability and accuracy of the clamping of the ceramic tile on both sides, avoid the deflection of the ceramic tile due to the protrusion 5 at the clamping point position, and reduce the scrap rate. And the synchronous driving member 425 can ensure that all adaptive clamping assemblies 42 are started at the same time, thereby accelerating the clamping and positioning speed of the ceramic tile, reducing the clamping time, and improving production efficiency.

[0039] Reference Figure 2 and Figure 3The synchronous driving member 425 includes a synchronous rod 4251 which is slidably connected to the support frame 41. The synchronous rod 4251 simultaneously penetrates through the plurality of mobile frames 421 and is slidably connected thereto. A driving cylinder 4252 is disposed at one end of the synchronous rod 4251. The mobile frames 421 are slidably connected with a plurality of electric clamps 4253 along the length direction of the synchronous rod 4251. The plurality of electric clamps 4253 correspond one to one with the push rods 423 on the plurality of mobile frames 421. A driving rod 4254 is disposed between the electric clamps 4253 and the corresponding push rods 423. For example, the driving rod 4254 is disposed in an L-shape as a whole, and the middle part of the driving rod 4254 is hinged to the mobile frame 421. One end of the driving rod 4254 is hinged to the electric clamps 4253, and the other end is provided with a waist-shaped groove 4255. A driving column 4256 is fixed on the push rod 423, and the driving column 4256 can be located in the waist-shaped groove 4255 to rotate and slide. The synchronization rod 4251 is provided with anti-slip patterns on the outer side along its length direction. The anti-slip patterns may be serrated, wavy or spiral, or may be irregular textures. The anti-slip patterns are used to increase the friction coefficient on the surface of the synchronization rod 4251, and increase the friction between the synchronization rod 4251 and the electric clamp 4253, so that the synchronization rod 4251 can transmit power stably and avoid the problem of unstable clamping or reduced positioning accuracy due to sliding.

[0040] When the ceramic tile needs to be clamped and positioned, the driving cylinder 4252 is started, and the piston rod of the driving cylinder 4252 pushes the synchronous rod 4251 to drive all the electric clamps 4253 to move along the length direction of the synchronous rod 4251, and the electric clamps 4253 drive the driving rod 4254 to rotate, and the driving rod 4254 drives the driving column 4256 and the push rod 423 to move along the width direction of the transmission belt to the side close to the ceramic tile, so as to clamp the ceramic tile. When the ceramic tile needs to be released from the clamping, the piston rod of the driving cylinder 4252 shrinks and drives the synchronous rod 4251 to move in the opposite direction, so as to drive the driving column 4256 and the push rod 423 to move along the width direction of the transmission belt to the side away from the ceramic tile, so as to release the clamping of the ceramic tile. When the spacing between adjacent mobile racks 421 is adjusted by the synchronous separation component 44, the clamping of the synchronous rod 4251 can be quickly released by the electric clamps 4253, so as to facilitate the rapid adjustment of the spacing between adjacent mobile racks 421.

[0041] Reference Figure 2 and Figure 3The synchronous separation assembly 44 includes two connecting rods 441 hinged on the moving frame 421, and the hinge position is in the middle position of the connecting rod 441. The two connecting rods 441 are cross-arranged, and the two connecting rods 441 on adjacent moving frames 421 correspond to each other, and the corresponding two connecting rods 441 on adjacent moving frames 421 are hinged to each other. An adjusting cylinder 442 is arranged on the support frame 41, and the piston rod end of the adjusting cylinder 442 is fixedly connected to a moving frame 421 at the end of the plurality of moving frames 421, and the adjusting cylinder 442 adopts a self-locking cylinder.

[0042] At the same time, the number of the moving racks 421 is an odd number, and the moving rack 421 in the middle position is fixedly connected to the support frame 41. When the adjusting cylinder 442 drives the moving rack 421 on one side to move, the moving rack 421 on the other side will automatically adjust through the linkage effect of the connecting rod 441, reducing the control complexity; and the odd number of moving racks 421 makes the number of moving racks 421 on both sides equal, and the moving rack 421 in the middle position is fixedly connected to the support frame 41, forming a stable fulcrum, which can effectively disperse and balance the force of the moving racks 421 on both sides, and improve the structural symmetry and balance of the entire synchronous separation component 44.

[0043] When it is necessary to inkjet ceramic tiles of different lengths and sizes, the spacing between two adjacent adaptive clamping assemblies 42 is adjusted through the synchronous separation assembly 44. First, the adjustment cylinder 442 is started, and then the piston rod of the adjustment cylinder 442 drives the end of the mobile frame 421 to slide along the moving direction of the conveyor belt 3. Because the connecting rod 441 is designed as a cross-hinged structure, when a mobile frame 421 moves, the hinged action of the connecting rod 441 can drive the adjacent mobile frames 421 to move synchronously, thereby realizing the equidistant synchronous movement between multiple mobile frames 421, thereby realizing the spacing adjustment between multiple adaptive clamping assemblies 42 to adapt to ceramic tiles of different lengths and sizes. Among them, by adjusting the linkage effect of the cylinder 442 and the connecting rod 441, the synchronous separation assembly 44 can quickly adapt to ceramic tiles of different lengths and sizes, thereby improving the flexibility and applicability of the equipment. The self-locking cylinder does not require continuous air supply and can stably maintain a set position for a long time in the absence of air pressure. On the one hand, it avoids the position change of the mobile rack 421 caused by air pressure fluctuations or system air outages, thereby improving the stability and reliability of the equipment. On the other hand, it reduces energy consumption and reduces operating costs.

[0044] Reference Figure 5The self-locking pitch-adjusting assembly 43 includes a pitch-adjusting screw 431 rotatably connected to the frame 1, a pitch-adjusting sleeve 432 is threadedly sleeved on the outer side of the pitch-adjusting screw 431, and one end of the pitch-adjusting sleeve 432 is rotatably connected to the support frame 41. Two guide telescopic rods 433 are fixed between the frame 1 and the support frame 41, and the two guide telescopic rods 433 are respectively located on both sides of the pitch-adjusting sleeve 432. A self-locking driving component 434 is provided at one end of the pitch-adjusting screw 431, and the self-locking driving component 434 is used to drive the pitch-adjusting screw 431 to rotate and lock the pitch-adjusting screw 431.

[0045] When it is necessary to perform inkjet processing on ceramic tiles of different widths and specifications, the position of the support frame 41 is adjusted by the self-locking distance adjustment component 43. First, the distance adjustment screw 431 is driven to rotate by the self-locking driving component 434, and the distance adjustment sleeve 432 moves along the axial direction of the distance adjustment screw 431 under the action of the guide telescopic rod 433, and at the same time drives the support frame 41 to move. Among them, the self-locking distance adjustment component 43 can adapt to ceramic tiles of different lengths and specifications, thereby improving the adaptability and flexibility of the equipment. And through the cooperation of the distance adjustment screw 431, the distance adjustment sleeve 432 and the self-locking driving component 434, the set position of the distance adjustment screw 431 can be locked to prevent the distance adjustment screw 431 from changing position due to external forces such as vibration of the device, thereby ensuring the stability and accuracy of the position of the support frame 41.

[0046] Reference Figure 5 The self-locking driving component 434 includes a worm wheel 4341 fixedly sleeved on the outer side of the pitch adjusting screw 431, and a worm 4342 is rotatably connected to the frame 1, and the worm 4342 and the worm wheel 4341 are meshed with each other. A driving motor 4343 is also provided at one end of the worm 4342.

[0047] When the driving motor 4343 is started, the power of the driving motor 4343 is transmitted to the worm 4342 through the output shaft, and the worm 4342 starts to rotate, and the rotation of the worm 4342 drives the worm wheel 4341 to rotate, and then drives the pitch-adjusting screw 431 to rotate together. When the driving motor 4343 stops working, the self-locking characteristics of the worm wheel 4341 and the worm 4342 prevent the pitch-adjusting screw 431 from rotating in the opposite direction, thereby keeping the pitch-adjusting screw 431 at the set position for a long time without power input, ensuring the stability of the position of the support frame 41.

[0048] The implementation principle of an inkjet printing device for ceramic tiles in an embodiment of the present application is as follows: when the ceramic tiles are subjected to inkjet processing, first, the ceramic tile blank is sent to the inkjet printing device by the conveyor belt 3, and when the ceramic tile reaches the positioning area, the adaptive positioning mechanism 4 is started. The adaptive positioning mechanism 4 clamps and corrects the two sides of the ceramic tile, and automatically avoids the protrusion 5 on the ceramic tile during the clamping correction, so that the ceramic tile blank is not easily deflected. Then the control system adjusts the position and injection parameters of the nozzle according to the preset pattern data, including the injection frequency, injection amount and injection position, to ensure the accuracy of the inkjet and the clarity of the pattern. The nozzle then moves along the surface of the ceramic tile, and the ink is accurately sprayed onto the ceramic tile to form a high-resolution pattern. After printing is completed, the conveyor belt 3 delivers the ceramic tile to the unloading area, and a printing process is completed. The adaptive positioning mechanism 4 can accurately position the ceramic tile before inkjet printing. Even if a local protrusion 5 appears on the side of the tile, the protrusion 5 can be adaptively avoided, so that the ceramic tile is accurately aligned, which makes it easier for the pattern of the ceramic tile to be misaligned during subsequent splicing, thereby improving the accuracy of the splicing of the entire set of ceramic tiles. The adaptive positioning mechanism 4 can handle tiles of different sizes, thereby improving the flexibility and applicability of the inkjet printing device.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An inkjet printing device for ceramic tiles, characterized in that: include: A frame (1), wherein the frame (1) is provided with an ink system (2), a plurality of nozzles connected to the ink system (2), a conveyor belt (3) for conveying ceramic tiles, and a control system for controlling the spraying frequency, spraying amount and spraying position of the nozzles; The self-adaptive positioning mechanism (4) is arranged on the frame (1) and is used to clamp and correct the edges of ceramic tiles of various specifications and sizes along both sides of the width direction of the conveyor belt (3), and automatically avoid the protrusions (5) on the ceramic tiles during clamping and correction.

2. An inkjet printing device for ceramic tiles according to claim 1, characterized in that: The adaptive positioning mechanism (4) comprises: Support frames (41), two of which are provided, the two support frames (41) being symmetrically arranged on the frame (1), and the two support frames (41) being respectively located on both sides of the conveyor belt (3) in the width direction; An adaptive clamping assembly (42) is arranged on the support frame (41), the number of which is multiple and evenly spaced along the length direction of the support frame (41), and is used to clamp the edge of the ceramic tile and automatically avoid the protrusion (5) on the ceramic tile; A self-locking distance adjustment component (43) is arranged between the support frame (41) and the frame (1) and is used to adjust the distance between the two support frames (41) according to the specifications of the ceramic tiles and to lock the adjusted position of the support frames (41); The synchronous separation component (44) is arranged between the plurality of adaptive clamping components (42) and is used to adjust the distance between two adjacent adaptive clamping components (42).

3. An inkjet printing device for ceramic tiles according to claim 2, characterized in that: The adaptive clamping assembly (42) comprises: A movable frame (421) is slidably connected to the supporting frame (41) along the moving direction of the conveyor belt (3); Racks (422), two of which are provided, the two racks (422) are symmetrically slidably connected to the moving frame (421) along the width direction of the transmission belt, and the two racks (422) are arranged at intervals; A push rod (423) is slidably connected to the moving frame (421) along the width direction of the transmission belt, and the push rod (423) is located between the two racks (422); A gear (424) is rotatably connected to one end of the push rod (423), and the gear (424) is meshed with the two racks (422) at the same time; The synchronous driving member (425) is arranged between the push rods (423) in the plurality of adaptive clamping assemblies (42) and is used to drive the plurality of push rods (423) to move synchronously.

4. The inkjet printing device for ceramic tiles according to claim 3, characterized in that: The synchronous driving member (425) comprises: A synchronization rod (4251) is slidably connected to the support frame (41) and simultaneously penetrates the plurality of moving frames (421); A driving cylinder (4252) is disposed at one end of the synchronization rod (4251); The electric clamping claw (4253) is slidably connected to the moving frame (421) along the length direction of the synchronization rod (4251), and a plurality of electric clamping claws (4253) are provided and correspond one-to-one to the push rods (423) on the plurality of moving frames (421); The driving rod (4254) is arranged between the electric clamp (4253) and the corresponding push rod (423). The middle part of the driving rod (4254) is hinged to the movable frame (421). One end of the driving rod (4254) is hinged to the electric clamp (4253), and the other end is provided with a waist-shaped groove (4255). The push rod (423) is fixedly provided with a driving column (4256), and the driving column (4256) can be located in the waist-shaped groove (4255) to rotate and slide.

5. The inkjet printing device for ceramic tiles according to claim 4, characterized in that: The synchronization rod (4251) is provided with anti-slip grooves on the outer side along its length direction.

6. The inkjet printing device for ceramic tiles according to claim 3, characterized in that: The synchronous separation component (44) comprises: A connecting rod (441), wherein the middle position of the connecting rod (441) is hinged to the moving frame (421), and two connecting rods (441) are arranged on each moving frame (421), the two connecting rods (441) are arranged crosswise, the two connecting rods (441) on adjacent moving frames (421) correspond to each other, and the corresponding two connecting rods (441) on adjacent moving frames (421) are hinged to each other; The regulating cylinder (442) is arranged on the supporting frame (41), and the piston rod end of the regulating cylinder (442) is fixedly connected to a moving frame (421) at the end of the plurality of moving frames (421).

7. The inkjet printing device for ceramic tiles according to claim 6, characterized in that: The regulating cylinder (442) is a self-locking cylinder.

8. The inkjet printing device for ceramic tiles according to claim 6, characterized in that: The number of the movable frames (421) is an odd number, and the movable frames (421) in the middle position are fixedly connected to the support frame (41).

9. The inkjet printing device for ceramic tiles according to claim 2, characterized in that: The self-locking distance adjustment component (43) comprises: A pitch adjusting screw (431) rotatably connected to the frame (1); A pitch-adjusting sleeve (432) is threadedly sleeved on the outside of the pitch-adjusting screw rod (431), and one end of the pitch-adjusting sleeve (432) is rotatably connected to the support frame (41); A guide telescopic rod (433) is fixedly arranged between the frame (1) and the support frame (41); The self-locking driving component (434) is arranged at one end of the pitch-adjusting screw (431) and is used to drive the pitch-adjusting screw (431) to rotate and lock the pitch-adjusting screw (431).

10. An inkjet printing device for ceramic tiles according to claim 9, characterized in that: The self-locking driving component (434) comprises: A worm wheel (4341) is fixedly sleeved on the outside of the pitch-adjusting screw (431); A worm (4342) is rotatably connected to the frame (1) and meshes with the worm wheel (4341); The driving motor (4343) is arranged at one end of the worm (4342).

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