A fabric free fiber removing device and a digital printing equipment

Abstract

The application is suitable for the field of digital printing and provides a fabric free fiber removing device and a digital printing equipment. The fabric free fiber removing device comprises a fixing seat for fixing on a printing equipment, and a removing part arranged on the fixing seat and located at the feeding end of the non-printing area above the fabric. A preset gap is formed between the bottom of the removing part and the fabric, and the preset gap is less than or equal to the distance from the nozzle to the surface of the fabric during printing operation. The bottom of the removing part is provided with a receiving groove, and the free fibers on the fabric can be collected in the receiving groove when the fabric is conveyed to the printing area. The fabric free fiber removing device provided by the application can remove the free fibers on the fabric, avoid the free fibers from being conveyed to the printing area along with the fabric and being adsorbed on the bottom of the nozzle during the printing process to block the nozzle, and thus affect the ink ejection.

Description

Technical Field

[0001] This invention pertains to digital printing equipment, and more particularly to a fabric free fiber removal device and a digital printing equipment. Background Technology

[0002] Direct-to-garment digital printing involves spraying ink directly onto fabric to create patterns. In existing direct-to-garment printing processes, fabrics often contain free fibers, such as lint, short fibers, or shed microfibers. These free fibers can adhere to the nozzles of the printhead during printing, clogging them and affecting ink droplet ejection and placement. This can lead to decreased print quality or even printing malfunctions. Summary of the Invention

[0003] This invention provides a fabric free fiber removal device, which aims to solve the problem in the prior art that free fibers in fabrics easily clog the nozzles during printing, leading to a decrease in print quality or even printing failure.

[0004] This invention is implemented as follows: a fabric free fiber removal device, comprising: Mounting bracket, used to fix the device to the printing equipment; A cleaning component is provided on the feed end of the non-printing area above the fabric on the fixed base. The bottom of the cleaning component has a preset gap with the fabric. The preset gap is less than or equal to the distance from the nozzle to the fabric surface during the printing operation. The bottom of the cleaning component is provided with a receiving groove, in which free fibers on the fabric can be collected when the fabric is conveyed to the printing area.

[0005] Furthermore, the number of receiving slots is at least two, and the at least two receiving slots are arranged at intervals along the fabric conveying direction at the bottom of the cleaning member.

[0006] Furthermore, the receiving groove perpendicular to the fabric conveying direction includes a plurality of sub-unit grooves, which are spaced apart along the direction perpendicular to the fabric conveying direction.

[0007] Furthermore, the sub-unit slots of the receiving slots perpendicular to the fabric conveying direction are staggered.

[0008] Furthermore, the cleaning component is movably disposed on the fixed base away from or near the fabric, and the device also includes a lifting assembly disposed on the fixed base and connected to the cleaning component, the lifting assembly driving the cleaning component away from or near the fabric.

[0009] Furthermore, the lifting assembly includes: The lifting components are in the form of two pieces, which are respectively disposed on opposite sides of the clearing component and fixed to the fixing base; A linkage shaft is arranged parallel to the clearing component and is linked to the two lifting components; A driving component drives the linkage shaft to rotate, and when the linkage shaft rotates, it synchronously drives the two lifting components to lift the clearing component.

[0010] Furthermore, the lifting component is a ball screw, the nut of the ball screw is fixed to the fixed seat, and the screw of the ball screw is linked to the linkage shaft and driven to rotate by the linkage shaft.

[0011] Furthermore, the fabric free fiber removal device also includes a matching slide rail and a slider, the slide rail being disposed on the fixed base or the removal component, and the slider being disposed on the removal component or the fixed base.

[0012] Furthermore, the fabric free fiber removal device also includes a displacement sensor, which includes a sensing plate disposed on the removal member and a first limiting part and a second limiting part disposed at intervals on the fixed base and capable of forming a signal with the sensing plate. The sensing plate can move between the first limiting part and the second limiting part as the removal member rises and falls.

[0013] The present invention also provides a digital printing device, including a feeding device, a printing device, and a fabric free fiber removal device as described above. The printing device is disposed above the feeding device to perform inkjet printing on the fabric on the feeding device in the printing area. The fabric free fiber removal device is disposed in the non-printing area of ​​the feeding device and is located at the feeding front end of the printing device.

[0014] The beneficial effects achieved by this invention are as follows: by setting a cleaning component in the non-printing area and setting a receiving groove at the bottom of the cleaning component to accommodate free fibers, when the fabric is conveyed to the printing area, the free fibers of the fabric that first passes through the front end of the non-printing area can first adhere to the receiving groove of the cleaning component, thereby greatly reducing the number of free fibers on the fabric. When the fabric is conveyed to the printing area, the number of free fibers can be greatly reduced, thereby avoiding the free fibers adsorbing on the printing device and clogging the nozzle of the printing device, thus affecting the printing effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a fabric free fiber removal device provided by the present invention; Figure 2 This is a partial structural schematic diagram from another view of a fabric free fiber removal device provided by the present invention; Figure 3 This is a schematic diagram of the structure of a digital printing device provided by the present invention.

[0016] Explanation of icon numbers: 1. Fixed base; 2. Cleaning component; 21. Receiving slot; 221. Sub-unit slot; 22. Connecting part; 3. Lifting assembly; 31. Lifting component; 311. Nut; 312. Lead screw; 32. Linkage shaft; 33. Driving component; 4. Slide rail; 5. Slider; 6. Displacement sensor; 61. Sensing plate; 62. First limiting part; 63. Second limiting part; 7. Adapter; 10. Feeding device; 20. Printing device; 30. Fabric free fiber removal device; 40. Foot pedal; 50. Height measuring device; 100. Fabric. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0018] See Figures 1-3 This invention provides a fabric free fiber removal device 30. The free fibers in the fabric can specifically include, but are not limited to, loose short fibers on the surface of pure cotton staple fiber cloth and silk cloth, fibers detached from the pile layer of coral fleece and brushed cloth, broken loop roots of velvet and cut pile cloth, and fine filaments from friction-splitting of long filament silk, etc. The fabric free fiber removal device 30 includes a fixing base 1 and a removal component 2. The fixing base 1 is used to fix it on the printing equipment. The cleaning component 2 is set on the fixing base 1 and located in the non-printing area above the fabric 100. There is a preset gap between the bottom of the cleaning component 2 and the fabric 100. The bottom of the cleaning component 2 is provided with a receiving groove 21. When the fabric 100 is conveyed to the printing area, the free fibers on the fabric 100 can be collected in the receiving groove 21. That is, the free fibers of the fabric will be partially raised and floated relative to the working surface of the fabric. Within the preset gap, when passing under the cleaning component 2, the free fibers will be attached to the bottom of the cleaning component 2. As the fabric is continuously conveyed to the printing area, the fibers attached to the bottom of the cleaning component 2 will move to the receiving groove 21 and be stored in the receiving groove 21.

[0019] By setting a cleaning element 2 in the non-printing area and a receiving groove 21 for accommodating free fibers at the bottom of the cleaning element 2, when the fabric 100 is conveyed to the printing area, the free fibers of the fabric 100 that first passes through the front end of the non-printing area can first adhere to the receiving groove 21 of the cleaning element 2, thereby greatly reducing the number of free fibers on the fabric 100. When the fabric 100 is conveyed to the printing area, the number of free fibers can be greatly reduced, thereby preventing free fibers from adsorbing onto the printing device 20 and clogging the nozzle of the printing device 20, thus affecting the printing effect.

[0020] The fabric free fiber removal device provided by the present invention can remove free fibers on the fabric 100, and prevent free fibers from being transported to the printing area with the fabric and adsorbed on the bottom of the printhead during the printing process, thereby clogging the nozzle and affecting the ink spraying.

[0021] Furthermore, the preset gap is less than or equal to the distance between the nozzle and the surface of the fabric 100 during the printing operation. That is, the preset gap is within the range of the distance between the printhead and the surface of the fabric 100 during the printing operation. The maximum preset gap can make the bottom of the cleaning component 2 flush with the nozzle. This can ensure that when the fabric 100 is conveyed to the printing area, the free fibers attached to it will be removed by the cleaning component 2 first, instead of skipping the cleaning component 2 directly and being adsorbed by the nozzle of the printhead after the fabric 100 is conveyed to the printing area. This avoids the fabric carrying a large number of residual free fibers attaching to the nozzle and clogging the nozzle as it is conveyed to the printing area.

[0022] See Figure 1 Furthermore, the number of receiving slots 21 is at least two, and the at least two receiving slots 21 are arranged at intervals along the conveying direction of the fabric 100 at the bottom of the cleaning member 2. In this way, before the fabric 100 is conveyed to the printing area, the free fibers of the fabric 100 can be repeatedly collected by the at least two receiving slots 21 on the cleaning member 2, thereby improving the ability to remove the free fibers of the fabric 100.

[0023] It should be noted that the number of receiving slots 21 along the conveying direction can be set according to actual needs. For example, the number of receiving slots 21 can be set according to the amount of free fibers in different fabrics 100 and the force required to remove the free fibers. In this embodiment, the number of receiving slots 21 is set to 4.

[0024] See Figure 1 Furthermore, the receiving groove 21 perpendicular to the fabric 100 conveying direction includes several sub-unit grooves 221, which are spaced apart along the direction perpendicular to the fabric 100 conveying direction. This arrangement can optimally replicate the overall nozzle arrangement structure formed by splicing several nozzles perpendicular to the fabric 100 direction in the printing device 20 (i.e., expanding nozzles), thereby maximizing the transfer of free fibers that easily adhere to the nozzles to the cleaning member 2, thus further improving the removal effect of free fibers.

[0025] Furthermore, the sub-unit slots 221 of the receiving slot 21 perpendicular to the fabric 100 conveying direction are staggered. This arrangement is also the best imitation of the overall nozzle arrangement structure after the nozzles are spliced ​​along the fabric movement direction in the printing device (i.e., the interpolation nozzles), which can avoid blind spots when collecting free fibers and further improve the free fiber removal effect.

[0026] Specifically, there are two fixing bases 1, which are respectively located on opposite sides of the fabric and fixed to the printing device. The cleaning component 2 is positioned across the fabric 100 and fixed to the fixing bases 1 at both ends.

[0027] See Figures 1-2 Furthermore, the cleaning component 2 is movably mounted on the fixed base 1, either away from or close to the fabric 100. The device also includes a lifting assembly 3, which is mounted on the fixed base 1 and connected to the cleaning component 2. The lifting assembly 3 drives the cleaning component 2 away from or close to the fabric 100. In this way, the preset gap can be adjusted according to the thickness of the fabric 100 to ensure that the preset gap is always greater than or equal to the distance from the nozzle to the fabric 100 during the printing operation, thereby adapting to the removal of free fibers from fabrics 100 of various thicknesses.

[0028] See Figure 2 Specifically, the lifting assembly 3 includes lifting components 31, a linkage shaft 32, and a drive component 33. There are two lifting components 31, positioned on opposite sides of the cleaning component 2 and fixed to the mounting base 1. The linkage shaft 32 is parallel to the cleaning component 2 and linked to the two lifting components 31. The drive component 33 drives the linkage shaft 32 to rotate, synchronously driving the two lifting components 31 to lift the cleaning component 2. Thus, by setting lifting components 31 on opposite sides of the cleaning component 2, the cleaning component 2 can be driven to move in a balanced manner away from or towards the fabric 100, ensuring that every area at the bottom of the cleaning component 2 maintains the same distance from the working surface of the fabric 100. By synchronously driving the two lifting components 31 through the linkage shaft 32, only one drive component 33 is needed to drive both lifting components 31. This not only ensures the balanced movement of the cleaning component 2 but also simplifies the structure, reduces the number of drive components 33, and saves costs. See Figure 2 Specifically, the two ends of the linkage shaft 32 are linked to the two lifting components 31 through the adapter 7. The drive component 33 drives the linkage shaft 32 to rotate through one of the adapters 7. The rotation of the linkage shaft 32 synchronously drives the two lifting components 31 to lift and lower the clearing component 2.

[0029] The adapter 7 can be, but is not limited to, a worm gear or a matching bevel gear set that converts one output force into two forces in different directions.

[0030] See Figure 2Specifically, the lifting component 31 is a ball screw, the nut 311 of the ball screw 312 is fixed to the fixed seat 1, the cleaning component 2 is threadedly engaged with the screw 312 of the ball screw, and further, the cleaning component 2 is provided with a connecting part, which is threadedly engaged with the screw 312 of the ball screw. The screw 312 of the ball screw is connected to one output end of the adapter 7 so that it can be driven to rotate by the linkage shaft 32. When the linkage shaft 32 rotates, it drives the screw 312 of the ball screw to rotate through the adapter 7.

[0031] See Figure 2 Furthermore, the fabric free fiber removal device 30 also includes a matching slide rail 4 and a slider 5. The slide rail 4 is mounted on the fixed base 1 or the removal component 2, and the slider 5 is mounted on the removal component 2 or the fixed base 1. The matching slide rail 4 and slider 5 can effectively improve the structural compactness between the removal component 2 and the fixed frame, and provide a guiding function when the removal component 2 moves.

[0032] See Figures 1-2 Furthermore, the fabric free fiber removal device 30 also includes a displacement sensor 6, which is electrically connected to the control center of the printing equipment. The displacement sensor 6 includes a sensing plate 61 disposed on the removal member 2 and a first limiting part 62 and a second limiting part 63 spaced apart on the fixed base 1 and capable of generating signals with the sensing plate 61. The sensing plate 61 can move between the first limiting part 62 and the second limiting part 63 as the removal member 2 rises and falls. When the sensing plate 61 approaches or touches the first limiting part 62, it sends a signal to the control center. In this way, the movement of the removal member 2 away from or close to the fabric 100 can be limited, avoiding overtravel movement that could lead to mechanical structure failure.

[0033] See Figure 3 The present invention also provides a digital printing device, including a feeding device 10, a printing device 20 and a fabric free fiber removal device 30 as described above. The printing device 20 is disposed above the feeding device 10 to perform inkjet printing on the fabric 100 on the feeding device 10 in the printing area. The fabric free fiber removal device 30 is disposed in the non-printing area on the feeding device 10 and is located at the feeding front end of the printing device 20.

[0034] By setting a fabric free fiber removal device 30 in the non-printing area of ​​the feeding device 10, the removal component 2 of the fabric free fiber removal device 30 is located above the fabric 100 and forms a preset gap with the fabric 100. A receiving groove 21 for receiving free fibers is set at the bottom of the removal component 2. The preset gap can prevent the removal component 2 from directly contacting the fabric 100 and scratching or damaging the fabric 100. When the fabric 100 is conveyed to the printing area, the free fibers of the fabric 100 that have passed the front end of the non-printing area can first adhere to the receiving groove 21 of the removal component 2 and be collected by the removal component 2. The removal component 2 can greatly reduce the free fibers on the fabric 100. When the fabric 100 is conveyed to the printing area, it can greatly reduce the free fibers adsorbed on the printing device 20, thereby avoiding clogging the nozzle of the printing device 20 and affecting the printing effect.

[0035] The digital printing equipment provided by this invention can remove free fibers on the fabric 100, preventing free fibers from clogging the nozzles during the printing process.

[0036] See Figure 3 Furthermore, the non-printing area at the feeding front end of the feeding device 10 in the printing area is also provided with a height measuring device 50. The height measuring device 50 is used to measure the thickness of the currently conveyed fabric 100. The thickness of the fabric 100 is obtained for the production equipment to adjust the production parameters, including but not limited to the height adjustment of the cleaning component 2 of the aforementioned fabric free fiber cleaning device 30.

[0037] Furthermore, the height measuring device 50 is located between the printing device 20 and the fabric free fiber removal device 30. In this way, the height measuring device 50 can measure the thickness of the fabric 100 after the free fibers of the fabric 100 have been removed, avoiding the free fibers from affecting the measurement structure and improving the accuracy of the fabric 100 thickness measurement.

[0038] Specifically, the height measuring device 50 may be, but is not limited to, a vertical grating ruler.

[0039] See Figure 3 Furthermore, the feeding device 10 is also equipped with a foot pedal 40 in the non-printing area, which allows maintenance personnel to perform maintenance, repair and other operations on the digital printing equipment.

[0040] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fabric free fiber removal device, characterized in that, include: Mounting bracket, used to fix it to the printing equipment; A cleaning component is provided on the feed end of the non-printing area above the fabric on the fixed base. The bottom of the cleaning component has a preset gap with the fabric. The preset gap is less than or equal to the distance from the nozzle to the fabric surface during the printing operation. The bottom of the cleaning component is provided with a receiving groove, in which free fibers on the fabric can be collected when the fabric is conveyed to the printing area.

2. The fabric free fiber removal device as described in claim 1, characterized in that, The number of receiving slots is at least two, and the at least two receiving slots are arranged at intervals along the fabric conveying direction at the bottom of the cleaning member.

3. The fabric free fiber removal device as described in claim 1 or 2, characterized in that, The receiving groove perpendicular to the fabric conveying direction includes a plurality of sub-unit grooves, which are spaced apart along the direction perpendicular to the fabric conveying direction.

4. The fabric free fiber removal device as described in claim 3, characterized in that, The sub-unit slots of the receiving slot perpendicular to the fabric conveying direction are staggered.

5. The fabric free fiber removal device as described in claim 1, characterized in that, The cleaning component is movably disposed on the fixed base, either away from or close to the fabric. The device also includes a lifting assembly disposed on the fixed base and connected to the cleaning component, which drives the cleaning component away from or close to the fabric.

6. The fabric free fiber removal device as described in claim 5, characterized in that, The lifting assembly includes: The lifting components are in the form of two pieces, which are respectively disposed on opposite sides of the clearing component and fixed to the fixing base; A linkage shaft is arranged parallel to the clearing component and is linked to the two lifting components; A driving component drives the linkage shaft to rotate, and when the linkage shaft rotates, it synchronously drives the two lifting components to lift the clearing component.

7. The fabric free fiber removal device as described in claim 6, characterized in that, The lifting component is a ball screw, the nut of the ball screw is fixed to the fixed seat, and the screw of the ball screw is linked to the linkage shaft and driven to rotate by the linkage shaft.

8. The fabric free fiber removal device as described in claim 7, characterized in that, The fabric free fiber removal device also includes a matching slide rail and a slider. The slide rail is disposed on the fixed base or the removal component, and the slider is disposed on the removal component or the fixed base.

9. The fabric free fiber removal device as described in claim 1, characterized in that, The fabric free fiber removal device further includes a displacement sensor, which includes a sensing plate disposed on the removal member and a first limiting part and a second limiting part disposed at intervals on the fixed base and capable of forming a signal with the sensing plate. The sensing plate can move between the first limiting part and the second limiting part as the removal member rises and falls.

10. A digital printing equipment, characterized in that, The device includes a feeding device, a printing device, and a fabric free fiber removal device as described in any one of claims 1-9. The printing device is disposed above the feeding device to perform inkjet printing on the fabric on the feeding device in a printing area. The fabric free fiber removal device is disposed in a non-printing area on the feeding device and is located at the feeding front end of the printing device.

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