Digital direct injection printing equipment

Abstract

The invention is suitable for the technical field of digital direct injection printing, and provides digital direct injection printing equipment which comprises a workbench, a printing assembly and a conveying mechanism, the printing assembly and the conveying mechanism are installed on the top of the workbench, the printing assembly is located over the conveying mechanism, and the printing assembly is suitable for conducting direct injection printing operation on canvas. The device solves the problems that during canvas printing feeding, the length of canvas needs to be reserved for manual traction as waste, and waste is caused, meanwhile, the problems that the front end of the canvas is wrinkled during feeding although viscous materials of a transmission belt prevent displacement, and material waste is increased are solved, the device is provided with a transferring mechanism and a guiding mechanism, the canvas is obtained and pulled to the printing range, and the printing efficiency is improved. The transfer mechanism and the guide mechanism are matched to lift and level and press down to level and fit canvas, wrinkles of the canvas are reduced in the process, the printing area is increased, the material utilization rate is increased, after printing is completed, the grabbing mechanism assists in guiding the canvas, the canvas is prevented from being directly lifted up from the conveying belt, and wrinkles are prevented in cooperation with the arrangement mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of digital direct-injection printing, and more specifically, to a digital direct-injection printing device. Background Art

[0002] Digital direct-injection printing machine is an advanced printing equipment that directly controls the pattern transfer process through a computer, and uses digital technology to accurately spray images onto the surface of various materials, such as textiles, canvas, paper, plastic, ceramics, etc., without plate making, to achieve multi-color printing at one time. This equipment has the advantages of easy operation, high production efficiency, flexible and changeable design, environmental protection and energy saving, and can meet the needs of customization and small batch production.

[0003] When the digital direct-injection printing machine prints on canvas, the wound canvas is released through the unwinding mechanism, and the canvas is manually wound on the conveying mechanism, which continuously conveys the canvas. When the canvas passes under the nozzle, the nozzle, under the precise control of the computer, sprays ink in the form of tiny droplets onto the fabric surface according to the shape and color requirements of the pattern.

[0004] However, during the printing loading process of canvas, manual operation is usually required to pull the end of the canvas to the nozzle position to start the printing operation. In this step, in order to ensure the smooth progress of the printing process, a length of canvas is often reserved at the end of the canvas, and this reserved canvas is often regarded as waste after printing is completed, resulting in unnecessary waste of materials.

[0005] In addition, during the digital printing process of canvas, setting a sticky material on the surface of the conveyor belt helps prevent the canvas from shifting during printing and ensure the accuracy of the printed pattern. However, this design often causes the front end of the canvas to become wrinkled due to the fit with the belt when feeding. This wrinkled part of the canvas cannot be effectively printed, which increases the waste of materials. Summary of the invention

[0006] In view of the shortcomings of the prior art, the object of the present invention is to provide a digital direct-injection printing device.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a digital direct-injection printing device, comprising a workbench and a printing component and a conveying mechanism installed on the top of the workbench, wherein the printing component is located directly above the conveying mechanism, and the printing component is suitable for direct-injection printing operations on canvas.

[0008] The printing assembly includes two groups of first electric slide rails symmetrically installed on the top of the workbench, and the conveying mechanism is located between the two groups of first electric slide rails. The tops of the two groups of first electric slide rails are slidably connected with second electric slide rails. The moving directions of the first electric slide rails and the second electric slide rails are staggered. A nozzle trolley is slidably connected to the side wall of the second electric slide rail. A collection box is horizontally installed on the top of the workbench, and the collection box is located within the moving range of the nozzle trolley.

[0009] A loading assembly is installed on the top of the workbench, and the loading assembly includes a guide mechanism installed on the front side of the workbench, and the guide mechanism includes two brackets vertically installed on the front side of the workbench, and two swing plates are rotatably connected between the two brackets, and two guide rollers are rotatably connected between the two swing plates, and the two guide rollers are arranged at intervals, and a swing motor is installed on the side wall of one of the brackets, and the output end of the swing motor is connected to the middle part of the side wall of one of the swing plates, and a pressure strip is slidably connected between the two swing plates.

[0010] A positioning mechanism and a second guide rail are installed on the top of the workbench, and the positioning mechanism and the second guide rail are respectively arranged on both sides of the conveying mechanism. The positioning mechanism includes a first guide rail installed on the top of the workbench and two groups of transfer mechanisms, one group of transfer mechanisms is slidably connected to the top of the first guide rail, and the other group of transfer mechanisms is slidably connected to the top of the second guide rail. The two groups of transfer mechanisms are arranged opposite to each other, and the transfer mechanism and the second guide rail are arranged flush with one end close to the guide mechanism, and the extension length of the end of the transfer mechanism away from the guide mechanism is greater than the extension length of the second guide rail.

[0011] A material unloading assembly is arranged at the rear side of the workbench, and the material unloading assembly includes a guiding mechanism slidably connected to the top of the first guide rail. An arranging mechanism for guiding and conveying the canvas is installed at the rear side of the workbench.

[0012] The present invention is further configured as follows: through grooves are opened on the side walls of the two swing plates, the two ends of the pressure strip are respectively slidably connected to the inside of the through grooves, and adjusting cylinders are vertically installed downward on the opposite sides of the two swing plates, and the end of the piston rod of each adjusting cylinder is connected to the end of the pressure strip.

[0013] The present invention is further configured as follows: an arc-shaped groove is formed on the top of the pressure strip, first arc-shaped portions are formed on both ends of the arc-shaped groove, and second arc-shaped portions are formed on both sides of the bottom of the pressure strip.

[0014] By adopting the above technical solution, the canvas is horizontally transported by the conveying mechanism and passes under the nozzle trolley. The canvas is placed horizontally by utilizing the sticky properties of the conveyor belt surface. When the nozzle trolley moves on the horizontally placed canvas surface, the purpose of printing is achieved. The nozzle trolley is composed of a nozzle and a transfer trolley, which is responsible for accurately spraying ink onto the canvas.

[0015] The adjusting cylinder is used to drive the two ends of the pressure strip to slide inside the through groove, thereby adjusting the distance between the pressure strip and one of the guide rollers. When the canvas passes between the two guide rollers, the end of the canvas passes between the top of the pressure strip and the upper guide roller, and during the conveying process, the canvas is conveyed in a fit with the first arc portion and the second arc portion to avoid the canvas being scratched and damaged by the edges and corners of the pressure strip. The pressure strip is suitable for positioning the canvas passing between the two guide rollers. That is, if the canvas is relatively loose when it reaches the position of the conveying mechanism, it is first moved and tensioned by the two guide rollers. If it is still loose, the pressure strip is used to squeeze the canvas, and then the two guide rollers are moved and pulled again to pull the loose canvas back. After the tension of the canvas is restored, the pressure strip gradually releases the canvas to facilitate the printing operation of the canvas.

[0016] The present invention is further configured as follows: the two groups of transfer mechanisms each include a first electric platform slidably connected to the top of the first guide rail and an electric clamp arranged on the top of the corresponding first electric platform, and the two electric clamps are arranged opposite to each other.

[0017] The present invention is further configured as follows: the top of each of the first electric platforms is connected to a guide rail, the top of the guide rail is slidably connected to a slider, the top of the slider is installed with a carrier, and the electric clamp is installed on the top of the corresponding carrier.

[0018] The present invention is further configured as follows: a guide rod is horizontally connected to the side wall of each guide rail, the slider is slidably connected to the outer side wall of the corresponding guide rod, the outer side wall of the guide rod is sleeved with a spring, the two ends of the spring are respectively connected to the side wall of the corresponding guide rail and the side wall of the slider, and a telescopic cylinder is installed on the top of each guide rail toward the slider, and the piston rod of the telescopic cylinder is lower than the height of the corresponding guide rod.

[0019] By adopting the above technical scheme, after the two sets of transfer mechanisms obtain the end of the canvas, they move in the direction away from the guide mechanism. At this time, the end of the canvas is pulled synchronously. When the end of the canvas moves into the nozzle printing range of the nozzle trolley, it stops moving. At the same time, the pressure strip clamps the canvas and pulls the canvas through the guide mechanism to ensure the flatness of the canvas surface. When the swing plate of the guide mechanism swings to a vertical state, the canvas is lifted and separated from the conveying mechanism. Then the pressure strip and the corresponding guide roller are gradually separated to slowly release the canvas. At the same time, the top of the swing plate swings in the direction away from the workbench, and the canvas is squeezed downward by the upper guide roller, causing the canvas to be flat and fit the surface of the conveying mechanism. In this state, the situation that the front end part is often wrinkled due to the fit with the transmission belt can be alleviated, and the end of the canvas is flat. The canvas in this state can increase the printing area, reduce the reserved length, and improve the utilization rate of the material.

[0020] The present invention is further configured as follows: the guiding mechanism includes a second electric platform slidably connected to the top of the first guide rail and a connecting plate horizontally installed on the top of the second electric platform, the connecting plate extends to the top of the conveying mechanism, and two groups of grabbing mechanisms are installed on the side walls of the connecting plate, and the two groups of grabbing mechanisms are arranged in the direction of the loading assembly.

[0021] The present invention is further configured as follows: each group of the grabbing mechanisms includes a lifting cylinder vertically installed upward on the side wall of the connecting plate, the top of the lifting cylinder is connected to an upper plate, and the bottom of the lifting cylinder is horizontally installed with a lower plate, the lower plate and the upper plate are arranged opposite to each other, and are both located on the side of the connecting plate close to the loading assembly.

[0022] The present invention is further configured as follows: an inclined portion is provided on the top of each lower plate, and the inclined portion is located on a side of the lower plate away from the corresponding lifting cylinder.

[0023] The present invention is further configured as follows: the arranging mechanism includes a vertical plate installed on the rear side of the workbench and an arranging motor installed on the side wall of the vertical plate, the output end of the arranging motor passes through the vertical plate and is connected to a plate body, the two ends of the side walls of the plate body away from the vertical plate are rotatably connected to arranging rollers, and the end of the first guide rail away from the guide mechanism extends to a position where the arranging mechanism is away from the conveying mechanism.

[0024] By adopting the above technical solution, when the end of the canvas is printed and conveyed forward by the conveying mechanism, two sets of grabbing mechanisms obtain the end of the canvas, and the second electric table drives the connecting plate and the two sets of grabbing mechanisms to move, thereby assisting in guiding the canvas. When it is necessary to grab the end of the canvas, the canvas is continuously conveyed forward by the conveying mechanism. At this time, the lower plate is attached to the surface of the conveying mechanism, the end of the canvas is shoveled up by the inclined portion, and the canvas is clamped by the upper plate and the lower plate. After that, the second electric table guides the canvas at the same speed as the conveying mechanism. The canvas is not directly lifted from the conveying mechanism, and the canvas is obtained and arranged in cooperation with the arranging mechanism to avoid direct pulling that causes wrinkles in the canvas at the printing position.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: (1) By setting up a transfer mechanism and a guide mechanism, the two sets of transfer mechanisms capture the end of the canvas and move away from the guide mechanism, and synchronously pull the canvas to the printing range of the nozzle carriage and stop. At this time, the pressure bar clamps the canvas, and the guide mechanism ensures that the canvas is flat. When the swing plate of the guide mechanism is in a vertical state, the canvas is lifted and separated from the conveying mechanism, and then the pressure bar and the guide roller gradually release the canvas. The top of the swing plate swings away from the workbench, and the upper guide roller squeezes the canvas downward to make it flat and fit the surface of the conveying mechanism. This process alleviates the wrinkles caused by the front end of the canvas fitting the transmission belt, making the end of the canvas flat, increasing the printing area, reducing the reserved length, and improving material utilization.

[0026] (2) When the transfer mechanism grabs the end of the canvas, the telescopic cylinder pushes the slider to slide along the guide rail and squeezes the spring, while driving the carrier and the electric clamp close to the canvas. The staff places the end of the canvas on the electric clamp. After the electric clamp clamps it, the cylinder is completely retracted, and the slider slides in the opposite direction under the action of the spring force. The carrier and the clamp pull the canvas to ensure that the end of the canvas is flat, which is convenient for printing operations and further improves material utilization.

[0027] (3) When the end of the canvas is printed and moves forward through the conveying mechanism, two sets of grabbing mechanisms will grab the end of the canvas, and the second electric table will drive the connecting plate and the grabbing mechanism to move to assist in guiding the canvas. When the conveying mechanism continues to convey the canvas, the lower plate is close to the surface of the conveying mechanism, and the inclined part is used to scoop up the end of the canvas and clamp it with the upper plate. Subsequently, the second electric table guides the canvas at the same speed as the conveying mechanism to ensure that the canvas is not directly lifted from the conveyor belt. At the same time, the canvas is obtained and arranged in cooperation with the arrangement mechanism to avoid direct pulling that may cause wrinkles in the canvas at the printing position. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The figure is a schematic diagram of the overall structure of a digital direct-injection printing device of the present invention.

[0029] Figure 2 It is a schematic diagram of the connection structure between the printing assembly and the workbench in the present invention.

[0030] Figure 3 It is a schematic diagram of the connection structure of the workbench, loading assembly and unloading assembly in the present invention.

[0031] Figure 4 It is a schematic diagram of the guide mechanism structure in the present invention.

[0032] Figure 5 for Figure 4 Schematic diagram of the local structure.

[0033] Figure 6 It is a schematic diagram of the matching structure of the layering strip and the arc groove in the present invention.

[0034] Figure 7 It is a schematic diagram of the coordination between the conveying mechanism and the guiding mechanism in the present invention.

[0035] Figure 8 It is a schematic diagram of the connection structure of the positioning mechanism and the guiding mechanism in the present invention.

[0036] Fig. 9 It is a schematic diagram of the structure of the transfer mechanism in the present invention.

[0037] Fig.10 It is a schematic diagram of the structure of the grabbing mechanism in the present invention.

[0038] Fig.11 It is a schematic diagram of the coordination structure of the guiding mechanism and the arranging mechanism in the present invention.

[0039] Description of the accompanying drawings: 1. workbench; 2. Printing assembly; 21. First electric slide rail; 22. Second electric slide rail; 23. Print head carriage; 24. Collection box; 3. Conveying mechanism; 4. Feeding assembly; 41. Guide mechanism; 411. Bracket; 412. Swing plate; 413. Swing motor; 414. Arc groove; 415. Pressure strip; 416. Guide roller; 417. Adjustment cylinder; 418. Through groove; 42, positioning mechanism; 421, first guide rail; 422, transfer mechanism; 4221, first electric platform; 4222, guide rail; 4223, telescopic cylinder; 4224, slider; 4225, guide rod; 4226, spring; 4227, platform; 4228, electric gripper; 43. Second guide rail; 5. Material unloading assembly; 51. Guide mechanism; 511. Second electric platform; 512. Connecting plate; 513. Grasping mechanism; 5131. Lifting cylinder; 5132. Lower plate; 5133. Inclined portion; 5134. Upper plate; 52. Arranging mechanism; 521. Vertical plate; 522. Arranging motor; 523. Plate body; 524. Arranging roller. DETAILED DESCRIPTION

[0040] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0041] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0042] See also Figure 1-Figure 11 , the present invention provides the following technical solutions: Embodiment 1, a digital direct-injection printing device, includes a workbench 1 and a printing assembly 2 and a conveying mechanism 3 installed on the top of the workbench 1, wherein the printing assembly 2 is located directly above the conveying mechanism 3, and the printing assembly 2 is suitable for performing direct-injection printing operations on canvas.

[0043] See also Figure 1 and Figure 2 The printing assembly 2 includes two groups of first electric slide rails 21 symmetrically installed on the top of the workbench 1, and the conveying mechanism 3 is located between the two groups of first electric slide rails 21, the tops of the two groups of first electric slide rails 21 are slidably connected with the second electric slide rails 22, and the side walls of the second electric slide rails 22 are slidably connected with the nozzle carriage 23, the first electric slide rails 21 and the second electric slide rails 22 can be stepper motor linear slide rail slide seat modules, which are not specifically limited here, the second electric slide rail 22 is connected to the slide seat of the first electric slide rail 21, the nozzle carriage 23 is connected to the slide seat of the second electric slide rail 22, and the moving directions of the first electric slide rail 21 and the second electric slide rail 22 are staggered, for this reason, the first electric slide rail 21 and the second electric slide rail 22 cooperate to adjust the position of the nozzle carriage 23 on the top of the workbench 1.

[0044] The conveying mechanism 3 can be a conveyor belt mechanism, that is, the conveyor belts are connected into a closed loop, and they are tensioned by a tensioning device. Driven by the motor, the conveyor belt is continuously operated by the friction between the conveyor belt and the driving roller, so as to achieve the purpose of transporting the cargo from the loading end to the unloading end. No specific limitation is made here. The surface of the conveyor belt on the conveying mechanism 3 is provided with a sticky material. The canvas is horizontally transported through the conveying mechanism 3 and passes under the nozzle trolley 23. The canvas is placed horizontally by utilizing the sticky properties of the conveyor belt surface. When the nozzle trolley 23 moves on the horizontally placed canvas surface, the purpose of printing is achieved.

[0045] The nozzle carriage 23 is composed of a nozzle and a transfer carriage, and is responsible for accurately spraying ink onto the canvas.

[0046] See also Figure 2 A collecting box 24 is horizontally installed on the top of the workbench 1. The collecting box 24 is located within the moving range of the nozzle carriage 23. The nozzle carriage 23 moves back and forth on the travel of the second electric slide rail 22 to complete a printing. When the nozzle carriage 23 completes a printing, the nozzle carriage 23 stays above the collecting box 24, so as to collect the ink remaining on the nozzle on the nozzle carriage 23.

[0047] To this end, a loading component 4 is installed on the top of the workbench 1, and the loading component 4 is used to grab the end of the canvas and load the material. The canvas is adhered to the surface of the conveying mechanism 3, which facilitates the nozzle on the nozzle trolley 23 to print on the canvas.

[0048] See also Figure 3-Figure 7 The feeding assembly 4 includes a guide mechanism 41 installed on the front side of the workbench 1, and the guide mechanism 41 is used to tension and adjust the canvas. The guide mechanism 41 includes two brackets 411 vertically installed on the front side of the workbench 1, and two swing plates 412 are rotatably connected between the two brackets 411, and two guide rollers 416 are rotatably connected between the two swing plates 412. The two guide rollers 416 are arranged at intervals, and a swing motor 413 is installed on the side wall of one of the brackets 411, and the output end of the swing motor 413 is connected to the middle of the side wall of one of the swing plates 412. The swing motor 413 is used to drive the corresponding swing plate 412 to rotate, thereby adjusting the positions of the two guide rollers 416.

[0049] When loading the canvas, the staff first wraps one end of the canvas around the position between a lower guide roller 416 and the workbench 1, and passes the canvas end between the two guide rollers 416, and then pulls it to an upper guide roller 416 to the side wall away from the workbench 1, and finally moves to the top of the conveying mechanism 3 after passing through an upper guide roller 416, and adjusts the tension of the canvas during conveyance by changing the position of the two guide rollers 416.

[0050] See also Figure 8-Figure 9 A positioning mechanism 42 and a second guide rail 43 are installed on the top of the workbench 1. The positioning mechanism 42 and the second guide rail 43 are respectively arranged on both sides of the conveying mechanism 3. The positioning mechanism 42 includes a first guide rail 421 installed on the top of the workbench 1 and two groups of transfer mechanisms 422, one group of transfer mechanisms 422 is slidably connected to the top of the first guide rail 421, and the other group of transfer mechanisms 422 is slidably connected to the top of the second guide rail 43. The two groups of transfer mechanisms 422 are arranged opposite to each other, and the transfer mechanism 422 and the second guide rail 43 are arranged flush with one end close to the guide mechanism 41, and the extension length of the end of the transfer mechanism 422 away from the guide mechanism 41 is greater than the extension length of the second guide rail 43.

[0051] See also Figure 8-Figure 9 The two groups of transfer mechanisms 422 slide on the top of the first guide rail 421 and the second guide rail 43 respectively. When the canvas is transmitted through the guide mechanism 41, the two groups of transfer mechanisms 422 move to a position close to the guide mechanism 41. At this time, the canvas is directly grabbed by the two groups of transfer mechanisms 422 after being wrapped around the guide mechanism 41, and the two groups of transfer mechanisms 422 are used to slide on the top of the corresponding first guide rail 421 and the second guide rail 43, and then the canvas is pulled to the top of the conveying mechanism 3 and the bottom of the nozzle trolley 23 for feeding. During the feeding process, the nozzle trolley 23 realizes the printing operation on the surface of the canvas.

[0052] In the second embodiment, during the printing and loading process of the canvas, manual operation is usually required to pull the end of the canvas to the nozzle position to start the printing operation. In this step, in order to ensure the smooth progress of the printing process, a length of canvas is often reserved at the end of the canvas, and this reserved canvas is often regarded as waste after the printing is completed, resulting in unnecessary waste of materials. In addition, during the digital printing process of the canvas, the surface of the conveyor belt is provided with a sticky material to help prevent the displacement of the canvas during printing and ensure the accuracy of the printed pattern. However, with this design, when the canvas is loaded, the front end portion often becomes wrinkled due to the fit with the transmission belt. This wrinkled portion of the canvas cannot be effectively printed and dyed, thereby increasing the waste of materials.

[0053] For this purpose, see Figure 5 and Figure 6 A pressure strip 415 is slidably connected between the two swing plates 412. Through grooves 418 are provided on the side walls of the two swing plates 412. The two ends of the pressure strip 415 are slidably connected to the inside of the through grooves 418 respectively. Adjusting cylinders 417 are vertically installed downward on the opposite sides of the two swing plates 412. The piston rod end of each adjusting cylinder 417 is connected to the end of the pressure strip 415. The adjusting cylinder 417 is used to drive the two ends of the pressure strip 415 to slide inside the through grooves 418, thereby adjusting the distance between the pressure strip 415 and one of the guide rollers 416.

[0054] See also Figure 6 The top of the pressure strip 415 is provided with an arc-shaped groove 414, and both ends of the arc-shaped groove 414 are provided with a first arc-shaped portion, and both sides of the bottom of the pressure strip 415 are provided with a second arc-shaped portion. When the canvas passes between the two guide rollers 416, the end of the canvas passes between the top of the pressure strip 415 and the upper guide roller 416, and during the conveying process, the canvas is conveyed in close contact with the first arc-shaped portion and the second arc-shaped portion to prevent the canvas from being scratched by the edges and corners of the pressure strip 415 and being damaged. It is suitable for positioning the canvas passing between the two guide rollers 416, that is, if the canvas is relatively loose when it reaches the position of the conveying mechanism 3, the two guide rollers 416 are first used to move the position and tension it. If it is still loose, the pressure strip 415 is used to squeeze the canvas, and then the two guide rollers 416 are moved again to pull the canvas, and then the loose canvas is pulled back. After the tension of the canvas is restored, the pressure strip 415 gradually releases the canvas to facilitate the printing operation of the canvas.

[0055] In this embodiment, refer to Figure 8 and Fig. 9 The two sets of transfer mechanisms 422 both include a first electric platform 4221 slidably connected to the top of the first guide rail 421 and an electric clamp 4228 arranged on the top of the corresponding first electric platform 4221. The two electric clamps 4228 are arranged opposite to each other. The first electric platform 4221 moves on the corresponding first guide rail 421 or the second guide rail 43 through the cooperation of a driving motor and a driving wheel, thereby driving the corresponding electric clamp 4228 to move. The electric clamp 4228 is suitable for clamping the end side of the canvas.

[0056] In this embodiment, refer to Figure 8 and Fig. 9The top of each first electric platform 4221 is connected to a guide rail 4222, the top of the guide rail 4222 is slidably connected to a slider 4224, a carrier 4227 is installed on the top of the slider 4224, and an electric clamp 4228 is installed on the top of the corresponding carrier 4227. A guide rod 4225 is horizontally connected to the side wall of each guide rail 4222, and the slider 4224 is slidably connected to the outer wall of the corresponding guide rod 4225. The outer wall of the guide rod 4225 is sleeved with a spring 4226, and the two ends of the spring 4226 are respectively connected to the side wall of the corresponding guide rail 4222 and the side wall of the slider 4224, and a telescopic cylinder 4223 is installed on the top of each guide rail 4222 toward the slider 4224, and the piston of the telescopic cylinder 4223 The rod is lower than the height of the corresponding guide rod 4225. When the electric clamp 4228 grabs the canvas, it first moves the first electric platform 4221 to a position close to the guide mechanism 41, and then controls the piston rod of the telescopic cylinder 4223 to extend. The telescopic cylinder 4223 pushes the corresponding slider 4224 to slide on the guide rail 4222. During this process, the slider 4224 squeezes the spring 4226, and at the same time drives the carrier 4227 and the electric clamp 4228 to move toward the direction of the canvas. The staff places the side edges of the end of the canvas on the two electric clamps 4228 respectively, and the electric clamps 4228 clamp the end of the canvas. Then the telescopic cylinder 4223 is completely retracted to separate the piston rod of the telescopic cylinder 4223 from the corresponding slider 4224.

[0057] The slider 4224 in the free state slides on the guide rail 4222 and the guide rod 4225 under the influence of the elastic force of the spring 4226. During the sliding process, the carrier 4227 and the electric clamp 4228 move in opposite directions to pull the canvas, thereby ensuring that the end of the canvas is flat, which is convenient for printing operations.

[0058] After the two sets of transfer mechanisms 422 obtain the ends of the canvas, they move in the direction away from the guide mechanism 41. At this time, the ends of the canvas are pulled synchronously. When the ends of the canvas move into the nozzle printing range of the nozzle trolley 23, they stop moving. At the same time, the pressure strip 415 clamps the canvas and pulls the canvas through the guide mechanism 41 to ensure the flatness of the canvas surface. When the swing plate 412 of the guide mechanism 41 swings to a vertical state, the canvas is lifted and separated from the conveying mechanism 3. Then the pressure strip 415 and the corresponding guide roller 416 are gradually separated to slowly release the canvas. At the same time, the top of the swing plate 412 swings in the direction away from the workbench 1, and the canvas is squeezed downward by the upper guide roller 416, so that the canvas is in a flat state and fits with the surface of the conveying mechanism 3. In this state, the situation that the front end part is often wrinkled due to the fit with the transmission belt can be alleviated, and the end of the canvas is in a flat state. The canvas in this state can increase the printing area, reduce the reserved length, and improve the utilization rate of the material.

[0059] In the third embodiment, after the canvas is printed and dyed, it is continuously transported forward by the conveying mechanism 3. When the end of the canvas moves to the tail end of the conveying mechanism 3, the staff still needs to handle the canvas. However, if it is pulled directly, the canvas at the printing position may be wrinkled.

[0060] For this purpose, see Figure 3 , Fig.10 and Fig.11 A material unloading assembly 5 is arranged on the rear side of the workbench 1, and the material unloading assembly 5 includes a guiding mechanism 51 slidably connected to the top of the first guide rail 421. An arranging mechanism 52 for guiding and conveying the canvas is installed on the rear side of the workbench 1. The guiding mechanism 51 is used to obtain the canvas and unload it by winding it through the arranging mechanism 52.

[0061] See also Fig.10 and Fig.11 The guiding mechanism 51 includes a second electric platform 511 slidably connected to the top of the first guide rail 421 and a connecting plate 512 horizontally installed on the top of the second electric platform 511. The connecting plate 512 extends to the top of the conveying mechanism 3. Two groups of grabbing mechanisms 513 are installed on the side wall of the connecting plate 512. The two groups of grabbing mechanisms 513 are both arranged in the direction of the loading component 4. The second electric platform 511 has the same structure as the first electric platform 4221, and no specific limitation is made here. When the end of the canvas is printed and conveyed forward by the conveying mechanism 3, the two groups of grabbing mechanisms 513 obtain the end of the canvas, and drive the connecting plate 512 and the two groups of grabbing mechanisms 513 to move through the second electric platform 511, thereby assisting in guiding the canvas.

[0062] In this embodiment, refer to Fig.10 and Fig.11 Each group of grabbing mechanisms 513 includes a lifting cylinder 5131 vertically mounted on the side wall of the connecting plate 512, the top of the lifting cylinder 5131 is connected to an upper plate 5134, and the bottom of the lifting cylinder 5131 is horizontally mounted with a lower plate 5132, the lower plate 5132 and the upper plate 5134 are arranged opposite to each other and are both located on the side of the connecting plate 512 close to the loading assembly 4, and the top of each lower plate 5132 is provided with an inclined portion 5133, and the inclined portion 5133 is located on the side of the lower plate 5132 away from the corresponding lifting cylinder 5131, and the lifting cylinder 5 131 is used to drive the upper plate 5134 to move up and down, and then adjust the distance between the upper plate 5134 and the lower plate 5132. When it is necessary to grab the end of the canvas, the canvas is continuously conveyed forward by the conveying mechanism 3. At this time, the lower plate 5132 is attached to the surface of the conveying mechanism 3, and the end of the canvas is shoveled up by the inclined portion 5133, and the canvas is clamped by the upper plate 5134 and the lower plate 5132. After that, the second electric table 511 guides the canvas at the same speed as the conveying mechanism 3, and the canvas is not directly lifted from the conveying mechanism 3.

[0063] In this embodiment, refer to Fig.11 The arrangement mechanism 52 includes a vertical plate 521 installed at the rear side of the workbench 1 and an arrangement motor 522 installed on the side wall of the vertical plate 521. The output end of the arrangement motor 522 passes through the vertical plate 521 and is connected to a plate body 523. The two ends of the plate body 523 away from the side wall of the vertical plate 521 are rotatably connected to arrangement rollers 524. The end of the first guide rail 421 away from the guide mechanism 41 extends to the position of the arrangement mechanism 52 away from the conveying mechanism 3. When the grabbing mechanism 513 moves to the conveying mechanism 3 When it is at the tail end position, the canvas adhered to the conveying mechanism 3 is pulled up horizontally, and then the grabbing mechanism 513 continues to move and passes between the two arranging rollers 524 of the arranging mechanism 52. After the canvas passes between the two arranging rollers 524 synchronously, the arranging motor 522 drives the plate body 523 and the two arranging rollers 524 to move, causing the arranging rollers 524 to squeeze the canvas, so that the canvas is tensioned on the two arranging rollers 524, and then the canvas is stacked and folded back and forth through an external stacking mechanism.

[0064] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

Claims

1. A digital direct printing device, characterized in that: It comprises a workbench (1), and a printing assembly (2) and a conveying mechanism (3) installed on the top of the workbench (1), wherein the printing assembly (2) is located directly above the conveying mechanism (3), and the printing assembly (2) is suitable for performing direct-injection printing operations on canvas; The printing assembly (2) comprises two groups of first electric slide rails (21) symmetrically mounted on the top of the workbench (1), and the conveying mechanism (3) is located between the two groups of first electric slide rails (21), the tops of the two groups of first electric slide rails (21) are slidably connected to second electric slide rails (22), the moving directions of the first electric slide rails (21) and the second electric slide rails (22) are staggered, a nozzle trolley (23) is slidably connected to the side wall of the second electric slide rail (22), a collecting box (24) is horizontally mounted on the top of the workbench (1), and the collecting box (24) is located within the moving range of the nozzle trolley (23); A loading assembly (4) is installed on the top of the workbench (1), the loading assembly (4) comprising a guide mechanism (41) installed on the front side of the workbench (1), the guide mechanism (41) comprising two brackets (411) installed vertically on the front side of the workbench (1), two swing plates (412) are rotatably connected between the two brackets (411), two guide rollers (416) are rotatably connected between the two swing plates (412), the two guide rollers (416) are arranged at intervals, a swing motor (413) is installed on the side wall of one of the brackets (411), the output end of the swing motor (413) is connected to the middle part of the side wall of one of the swing plates (412), and a pressure strip (415) is slidably connected between the two swing plates (412); A positioning mechanism (42) and a second guide rail (43) are installed on the top of the workbench (1). The positioning mechanism (42) and the second guide rail (43) are respectively arranged on both sides of the conveying mechanism (3). The positioning mechanism (42) comprises a first guide rail (421) installed on the top of the workbench (1) and two groups of transfer mechanisms (422), one group of the transfer mechanisms (422) is slidably connected to the top of the first guide rail (421), and the other group of the transfer mechanisms (422) is slidably connected to the top of the second guide rail (43). The two groups of the transfer mechanisms (422) are arranged opposite to each other. The transfer mechanisms (422) and the second guide rail (43) are arranged flush with one end close to the guide mechanism (41), and the extension length of the end of the transfer mechanism (422) away from the guide mechanism (41) is greater than the extension length of the second guide rail (43); A material unloading assembly (5) is arranged at the rear side of the workbench (1), and the material unloading assembly (5) comprises a guiding mechanism (51) slidably connected to the top of the first guide rail (421), and an arranging mechanism (52) for guiding and conveying canvas is installed at the rear side of the workbench (1).

2. A digital direct printing device according to claim 1, characterized in that: A through groove (418) is provided on the side walls of the two swing plates (412), and the two ends of the pressure strip (415) are slidably connected to the inside of the through groove (418), and an adjusting cylinder (417) is vertically installed downward on the opposite sides of the two swing plates (412), and the end of the piston rod of each adjusting cylinder (417) is connected to the end of the pressure strip (415).

3. A digital direct printing device according to claim 2, characterized in that: The top of the pressure strip (415) is provided with an arc-shaped groove (414), both ends of the arc-shaped groove (414) are provided with a first arc-shaped portion, and both sides of the bottom of the pressure strip (415) are provided with a second arc-shaped portion.

4. A digital direct printing device according to claim 1, characterized in that: The two sets of transfer mechanisms (422) each comprise a first electric platform (4221) slidably connected to the top of the first guide rail (421) and an electric clamp (4228) disposed on the top of the corresponding first electric platform (4221), and the two electric clamps (4228) are disposed opposite to each other.

5. A digital direct printing device according to claim 4, characterized in that: The top of each of the first electric platforms (4221) is connected to a guide rail (4222), the top of the guide rail (4222) is slidably connected to a slider (4224), the top of the slider (4224) is installed with a carrier (4227), and the electric clamp (4228) is installed on the top of the corresponding carrier (4227).

6. A digital direct printing device according to claim 5, characterized in that: A guide rod (4225) is horizontally connected to the side wall of each guide rail (4222), the slider (4224) is slidably connected to the outer side wall of the corresponding guide rod (4225), the outer side wall of the guide rod (4225) is sleeved with a spring (4226), the two ends of the spring (4226) are respectively connected to the side wall of the corresponding guide rail (4222) and the side wall of the slider (4224), and a telescopic cylinder (4223) is installed at the top of each guide rail (4222) towards the slider (4224), and the piston rod of the telescopic cylinder (4223) is lower than the height of the corresponding guide rod (4225).

7. The digital direct printing device according to claim 1, characterized in that: The guiding mechanism (51) comprises a second electric platform (511) slidably connected to the top of the first guide rail (421) and a connecting plate (512) horizontally mounted on the top of the second electric platform (511), wherein the connecting plate (512) extends above the conveying mechanism (3), and two groups of gripping mechanisms (513) are mounted on the side walls of the connecting plate (512), and the two groups of gripping mechanisms (513) are both arranged in the direction of the loading assembly (4).

8. A digital direct printing device according to claim 7, characterized in that: Each group of the gripping mechanisms (513) comprises a lifting cylinder (5131) mounted vertically upward on the side wall of the connecting plate (512); an upper plate (5134) is connected to the top of the lifting cylinder (5131); a lower plate (5132) is mounted horizontally at the bottom of the lifting cylinder (5131); the lower plate (5132) and the upper plate (5134) are arranged opposite to each other and are both located on a side of the connecting plate (512) close to the loading assembly (4).

9. A digital direct printing device according to claim 8, characterized in that: The top of each lower plate (5132) is provided with an inclined portion (5133), and the inclined portion (5133) is located on a side of the lower plate (5132) away from the corresponding lifting cylinder (5131).

10. A digital direct printing device according to claim 8, characterized in that: The arrangement mechanism (52) comprises a vertical plate (521) mounted on the rear side of the workbench (1) and an arrangement motor (522) mounted on the side wall of the vertical plate (521); an output end of the arrangement motor (522) passes through the vertical plate (521) and is connected to a plate body (523); two ends of the side wall of the plate body (523) away from the vertical plate (521) are rotatably connected to arrangement rollers (524); an end of the first guide rail (421) away from the guide mechanism (41) extends to a position of the arrangement mechanism (52) away from the conveying mechanism (3).

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