Digital printing equipment

Abstract

The invention discloses digital printing equipment, and belongs to the field of digital printing. Comprising a printing machine body and a containing table located on the lower side of the printing machine body. The equipment box is arranged on the lower side of the placement table; the roller is arranged on the placing table and is used for unwinding and winding the cloth; the tension roller is arranged between the two rollers; the stretching assemblies are arranged in the equipment box and located on the two sides of the cloth in the transverse direction; the stretching assembly comprises an annular baffle fixedly arranged in the equipment box; the annular chain sleeves the outer side of the annular baffle plate; the multiple sets of hinge blocks are arranged along the annular chain in a hinged mode; the opening block is arranged on the hinge block in a sliding manner and is used for adsorbing the cloth and transversely opening the cloth; the magnet head is arranged at one end of the opening block; and the electromagnet is fixedly arranged in the equipment box. The digital printing equipment has the beneficial effect that the digital printing equipment capable of preventing the printed fabric from wrinkling is provided.

Description

Technical Field

[0001] The present application relates to the field of digital printing, and more specifically, to digital printing equipment. Background Art

[0002] The current printing machine usually adopts two printing methods, one is to place the fabric on the platform and fix it before inkjet printing. This method is suitable for small-sized fabrics, and the other is to perform inkjet printing on the fabric while winding and unwinding. This method has a high degree of automation and can print the entire roll of fabric. For example, the Chinese invention patent with the publication number CN114643787B discloses a digital inkjet textile printing machine. Unlike substrates with a certain hardness such as paper, since the nature of substrates such as cloth is very soft, when printing on substrates such as cloth, a certain tension must be applied to it to make it flat before printing. Most of the existing ones stretch the fabric in the longitudinal direction through a roller, which will cause the fabric to wrinkle in the transverse direction. It is necessary to clamp and stretch both sides of the fabric in the transverse direction at the same time to ensure that the printed part is flat and wrinkle-free. At the same time, it is necessary to avoid excessive stretching force to cause deformation of the fabric and affect the printing effect. The existing clamping and stretching method will cause the edge areas of the two sides of the fabric in the transverse direction to be unable to be printed during the clamping process, resulting in the waste of part of the fabric.

[0003] Therefore, a new digital printing device is needed to avoid wrinkles on printed fabrics. Summary of the invention

[0004] The content of this application is used to introduce concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this application is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0005] In order to solve the technical problems mentioned in the above background technology part, some embodiments of the present application provide digital printing equipment, including: a printing machine body, a placing table, located at the lower side of the printing machine body, for placing cloth, the placing table has a printing area, and the printing area has a front side and a rear side along the cloth transportation direction; an equipment box, arranged at the lower side of the placing table; a roller, arranged on the placing table, for unwinding and winding the cloth; a tension roller, arranged between two rollers, for applying a certain tension to the cloth in the longitudinal direction; a stretching component, arranged in the equipment box, located on both sides of the cloth in the transverse direction, for applying tension to the cloth in the transverse direction; the stretching component includes: an annular baffle, fixedly arranged in the equipment box; an annular chain, sleeved on the outer side of the annular baffle; a hinge block, provided with multiple groups, hingedly arranged along the annular chain; a stretching block, slidably arranged on the hinge block, for adsorbing the cloth and stretching the cloth in the transverse direction; a magnet head, arranged at one end of the stretching block; an electromagnet, fixedly arranged in the equipment box.

[0006] By setting up the stretching block, a certain tension is applied to the cloth in the lateral direction when the cloth passes through the printing area, thereby avoiding wrinkles on the cloth. At the same time, by setting up the ring chain, the stretching block and the cloth move in the same direction through the movement of the ring chain, so that the stretching block can still stretch the cloth while the cloth is being rolled up and unrolled, thereby ensuring the continuity of printing.

[0007] Furthermore, a driving motor is fixedly connected in the equipment box, a notch is provided on the annular baffle, an output end of the driving motor is provided in the notch of the annular baffle, and a driving wheel for driving the annular chain is fixedly connected to the output end of the driving motor.

[0008] The ring chain is driven to move on the ring baffle by a driving motor.

[0009] Furthermore, a fan is fixedly connected in the equipment box, and an air suction head is connected to the air suction end of the fan. A through groove connected to the air suction head is provided on the annular baffle, a connecting groove for the air suction head to be placed in is provided on the hinge block, a connecting pipe connected to the connecting groove is provided on the hinge block, an inner cavity is provided on the support block, one end of the connecting pipe is inserted into the inner cavity, and a small air suction hole connected to the inner cavity is provided on the support block.

[0010] By setting up the fan and suction head, the negative pressure generated by the fan is transmitted to part of the stretching blocks through the suction head. After the stretching blocks absorb the edge of the cloth to straighten the cloth, the cloth passes through the printing area for printing. After the printing is completed, the negative pressure is no longer transmitted to the stretching blocks, so that the stretching blocks no longer absorb the cloth, thereby preventing the stretching blocks from driving the cloth.

[0011] Furthermore, the cross section of the annular baffle is a runway-shaped structure having two straight side edges, one of which is close to the edge of the fabric, and the placement table is provided with slots on both sides of the printing area, one of which is close to the slot.

[0012] By arranging the annular baffle plate as a runway-type structure, the expansion block moves in the same direction as the cloth when moving along the side of the straight line.

[0013] Furthermore, the electromagnet part includes: an attraction electromagnet fixed to the equipment box and located at the front end of the printing area and a repulsion electromagnet located at the rear end of the printing area. The attraction electromagnet and the repulsion electromagnet are both arranged at the straight side of the annular baffle.

[0014] By setting the suction electromagnet and the repulsion electromagnet, the magnet head on the stretching block moves under the action of the suction electromagnet and the repulsion electromagnet, and applies lateral tension to the cloth. When the stretching block is located at the suction electromagnet position, the magnet head on the stretching block is attracted and the stretching block extends. When the stretching block is located at the repulsion electromagnet position, the magnet head on the stretching block is repelled and the stretching block is retracted.

[0015] Furthermore, the air suction head has an air suction port extending along the straight edge of the annular baffle, one end of the air suction port is located in front of the suction electromagnet, and the other end is located in front of the repulsion electromagnet.

[0016] One end of the suction port is located in front of the suction electromagnet and the other end is located in front of the repulsion electromagnet, so that after the stretching block adsorbs the edge of the cloth, it moves under the action of the suction electromagnet to stretch the edge of the cloth. At the same time, after the stretching block is no longer adsorbed, the block moves under the action of the repulsion electromagnet to avoid dragging the cloth.

[0017] Furthermore, the support block on one side of the straight edge of the annular baffle is located at the lower side of the slot on the placement table, and a portion of its projection on the placement table is located in the slot.

[0018] After the projection of the stretching block is located in the groove, it absorbs the edge of the cloth and moves away from the cloth to flatten the cloth.

[0019] Furthermore, the endless chain has an articulated portion for the articulated block to articulate and a side portion in contact with the driving wheel.

[0020] When the driving wheel rotates, it contacts the side edge portion, driving the ring chain to rotate on the ring baffle.

[0021] Furthermore, a bracket located at the front and rear sides of the printing area is fixedly connected to the placement table, the roller is rotatably arranged on the bracket, the end of the tension roller is slidably arranged on the bracket, and an elastic member is connected between the bracket and the end of the tension roller.

[0022] The tension roller applies tension to the fabric in the longitudinal direction.

[0023] Furthermore, a rubber pad is arranged on the upper end of the propping block, and a notch on the placement table has a chamfer.

[0024] The gap between the support block and the surface of the placement table is minimized by chamfering and using rubber pads to avoid unevenness on the fabric surface.

[0025] The beneficial effects of this application are:

[0026] 1. Through the setting of the stretching block, the stretching block absorbs the edge position of the fabric and stretches it to both sides. Through the cooperation of the two tension rollers, the fabric is exerted with tension in the longitudinal direction to ensure that the fabric is flat during printing. The stretching block moves along the annular baffle, so that when the fabric is rolled up and unrolled, the stretching block moves synchronously with the fabric, so that the fabric is always in a flat state in the printing area.

[0027] 2. Through the magnet head arranged on the stretching block and the magnet assembly arranged in the equipment box, after the stretching block absorbs the edge of the cloth, the stretching block is driven to stretch the cloth in the lateral direction under the action of the magnet assembly when passing in front of the printing area. At the same time, after leaving the printing area, the stretching block no longer absorbs the cloth, so that when the stretching block returns to the initial position under the action of the magnet assembly, it will not drive the cloth to avoid wrinkles.

[0028] 3. Since the stretching block absorbs and stretches one side of the fabric through the suction holes, it will not block the printed side of the fabric. Therefore, it can be printed at the edge of the fabric to ensure the integrity of the printing. Because the adsorption method is adopted, there is a threshold value for the stretching force received by the fabric, which avoids deformation caused by excessive stretching of the fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The illustrative embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application.

[0030] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the components and elements are not necessarily drawn to scale.

[0031] In the attached picture:

[0032] Figure 1 is an overall schematic diagram according to an embodiment of the present application;

[0033] Figure 2 yes Figure 1 A schematic cross-sectional view of an embodiment;

[0034] Figure 3 yes Figure 1 A schematic diagram of the structure of the notch in the embodiment;

[0035] Figure 4 yes Figure 1 Internal schematic diagram of the equipment box in the embodiment;

[0036] Figure 5 yes Figure 1 A schematic structural diagram of an annular baffle in an embodiment;

[0037] Figure 6 yes Figure 1 A schematic structural diagram of an annular chain in an embodiment;

[0038] Figure 7 yes Figure 1 A schematic diagram of the structure of the suction head in the embodiment;

[0039] Figure 8 yes Figure 1 A schematic structural diagram of the hinge block in the embodiment;

[0040] Fig. 9 yes Figure 1 A schematic diagram of the extension of the propping block in the embodiment;

[0041] Fig.10 yes Figure 1 A schematic cross-sectional view of the hinge block and the support block in the embodiment.

[0042] Reference numerals:

[0043] 100. Printing machine body; 101. Placement table; 102. Equipment box; 103. Roller; 104. Tension roller; 105. Stretching assembly; 107. Bracket; 108. Elastic member; 109. Annular baffle; 110. Annular chain; 111. Articulated block; 112. Spreading block; 113. Magnet head; 114. Electromagnet member; 115. Notch; 116. Suction electromagnet; 117. Repulsion electromagnet; 118. Driving motor; 119. Notch; 120. Driving wheel; 121. Articulated part; 122. Side part; 123. Fan; 124. Suction head; 125. Through slot; 126. Connecting slot; 127. Connecting pipe; 128. Inner cavity; 129. Suction hole; 130. Rubber pad; 131. Suction port. DETAILED DESCRIPTION

[0044] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0045] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0046] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0047] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0048] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0049] Reference Figure 1-10 , a digital printing device, comprising: a printing machine body 100, a placing table 101, an equipment box 102, a roller 103, a tension roller 104, and a stretching assembly 105. The placing table 101 has an equipment box 102 at the lower end, and the printing machine body 100 is arranged on the upper side of the placing table 101. The placing table 101 is fixedly connected with a bracket 107 located at the front and rear sides of the printing area, two rollers 103 are rotatably arranged on the two brackets 107, and two tension rollers 104 are arranged, and the ends are slidably arranged on the bracket 107.

[0050] In one embodiment, an elastic member 108 is connected between the bracket 107 and the end of the tension roller 104, and the elastic member 108 is set as a spring. The tension roller 104 cooperates with the drum 103 to make the cloth have a longitudinal tension force, and at the same time make the cloth close to the placement table 101.

[0051] The placement table 101 has a printing area, the printing area has a front side and a rear side along the cloth transport direction, and the placement table 101 is provided with slots 115 located on both sides of the printing area. When the cloth is on the placement table 101, the edges on both sides are located in the slots 115.

[0052] The stretching assembly 105 is arranged in the equipment box 102, and two groups are symmetrically arranged, respectively located on both sides of the cloth in the transverse direction, for applying tension to the cloth in the transverse direction. The stretching assembly 105 includes: an annular baffle 109, an annular chain 110, a hinge block 111, a spreading block 112, a magnet head 113, and an electromagnet 114. The annular baffle 109 is fixedly arranged in the equipment box 102. The cross section of the annular baffle 109 is a runway-shaped structure, with two straight side edges, one of which is close to the notch 115 and extends along the cloth transportation direction. The annular chain 110 is sleeved on the annular baffle 109. There are multiple groups of hinge blocks 111, which are hingedly arranged along the annular chain 110. The hinge block 111 moves along the annular baffle 109 by the annular chain 110 rotating on the annular baffle 109. The stretching block 112 is slidably disposed on the hinge block 111, and is used to absorb the cloth and stretch the cloth laterally. The stretching block 112 on the straight side of the annular baffle 109 is located below the notch 115 on the placement table 101, and a portion of the projection on the placement table 101 is located in the notch 115. The stretching block 112 has a stretching state and a retracted state.

[0053] In one embodiment, in the expanded state, the projection of the expansion block 112 on the placement table 101 is mostly within the slot 115, and in the retracted state, the projection of the expansion block 112 on the placement table 101 is only a small part within the slot 115. In the retracted state, the expansion block 112 is adsorbed to the edge of the fabric, and when it moves to the expanded state, the fabric is stretched.

[0054] In one embodiment, a cylinder is provided between the opening block 112 and the hinge block, and the cylinder is extended and retracted to drive the opening block 112 to move. Two sensors are provided in the equipment box 102. When the first sensor senses the opening block, the cylinder is extended to open the opening block 112. When the second sensor senses the opening block, the cylinder is retracted to retract the opening block 112.

[0055] The magnet head 113 is arranged at one end of the stretching block 112, and the stretching block 112 is driven to move by attracting the magnet head 113. The electromagnet part 114 is fixedly arranged in the equipment box 102, and is used to control the stretching and recovery of the stretching block 112. The electromagnet part 114 includes: an attraction electromagnet 116 fixed to the equipment box 102 and located at the front side of the printing area and extending to the printing area, and a repulsion electromagnet 117 located at one end of the rear side of the printing area, and the attraction electromagnet 116 and the repulsion electromagnet 117 are both arranged at the straight side position of the annular baffle 109. When the stretching block 112 is located at the position of the attraction electromagnet 116, the magnet head 113 on the stretching block 112 is attracted, and the stretching block 112 extends out. When the stretching block 112 is located at the position of the repulsion electromagnet 117, the magnet head 113 on the stretching block 112 is repelled, and the stretching block 112 is retracted.

[0056] A driving motor 118 is fixedly connected inside the equipment box 102, a notch 119 is provided on the annular baffle 109, an output end of the driving motor 118 is provided in the notch 119 of the annular baffle 109, and a driving wheel 120 for driving the annular chain 110 is fixedly connected to the output end of the driving motor 118, so that the annular chain 110 rotates on the annular baffle 109.

[0057] The endless chain 110 has an articulated portion 121 for articulating the articulated block 111 and a side portion 122 in contact with the driving wheel 120 . When the driving wheel 120 rotates, it contacts the side portion 122 , driving the endless chain 110 to rotate on the annular baffle 109 .

[0058] A fan 123 is fixedly connected inside the equipment box 102, and a suction head 124 is connected to the suction end of the fan 123. A through groove 125 connected to the suction head 124 is provided on the annular baffle 109. A connecting groove 126 for the suction head 124 to be placed on the hinge block 111. A connecting pipe 127 connected to the connecting groove 126 is provided on the hinge block 111.

[0059] The cloth moves to the printing area for printing; after printing is completed, the hinge block 111 and the opening block 112 continue to move until the suction head 124 leaves the connecting groove 126, and the suction holes 129 no longer generate suction to avoid pulling the cloth.

[0060] In one embodiment, an inner cavity 128 is provided on the expansion block 112 , one end of the connecting tube 127 is inserted into the inner cavity 128 , and an air suction hole 129 connected to the inner cavity 128 is provided on the expansion block 112 .

[0061] Through the connecting tube 127, the expanding block 112 can absorb the cloth in both the expanded state and the retracted state.

[0062] In one embodiment, the notch 115 has a chamfer. A rubber pad 130 is disposed on the upper end of the propping block 112. The chamfer cooperates with the rubber pad 130, and the rubber pad 130 deforms when it fits to the chamfer position, thereby avoiding unevenness at the notch 115.

[0063] In one embodiment, the suction head 124 has a suction port 131 extending along the straight edge of the annular baffle 109, one end of the suction port 131 is located in front of the suction electromagnet 116, and the other end is located in front of the repulsion electromagnet 117. When the stretching block 112 is located in front of the printing area, the suction holes 129 on the portion of the stretching block 112 projected in the slot 115 absorb the edge of the cloth. When it moves to the position of the suction electromagnet 116, the magnet head 113 on the stretching block 112 is attracted, and the stretching block 112 extends to stretch the cloth, applying tension to the cloth laterally to avoid wrinkles. After the cloth printing is completed, when the stretching block 112 leaves the suction port 131, the suction holes 129 no longer attract the cloth to avoid pulling the cloth, and then move to the position of the repulsion electromagnet 117, so that the magnet head 113 on the stretching block 112 is repelled, so that the stretching block 112 returns to the retracted state.

[0064] Working process: When printing is performed, the cloth moves from the front side of the printing area to the back side of the printing area through the winding and unwinding of the two rollers 103, and at the same time, the tension roller 104 presses the cloth onto the placement table 101, and the cloth has longitudinal tension through the cooperation of the two rollers 103 and the two tension rollers 104. The drive motor 118 is started to output power, thereby driving the drive wheel 120 to rotate, so that the ring chain 110 rotates on the ring baffle 109, driving the hinge block 111 and the opening block 112 to move. When the hinge block 111 and the opening block 112 move to the side of the annular baffle 109 close to the notch 115, they move along the direction of movement of the cloth and the movement speed is consistent with the cloth. The suction head 124 is first embedded in the connection groove 126, so that the suction hole 129 generates suction to absorb the cloth; when it moves to the area of ​​the suction electromagnet 116, the magnet head 113 on the opening block 112 is attracted, and the opening block 112 extends to open the cloth and applies tension to the cloth laterally. Then it moves to the printing area for printing; after the printing is completed, the hinge block 111 and the opening block 112 continue to move until the suction head 124 leaves the connection groove 126, and the suction hole 129 no longer generates suction to avoid pulling the cloth; the hinge block 111 and the opening block 112 continue to move to the position of the repulsion electromagnet 117, so that the magnet head 113 on the opening block 112 is repelled, so that the opening block 112 returns to the retracted state.

[0065] The above descriptions are only some preferred embodiments of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the embodiments of the present disclosure (but not limited to) and the technical solutions formed.

Claims

1. Digital printing equipment, including: The printing machine body is characterized by: Also includes: The placing table is located at the lower side of the printing machine body and is used to place the cloth. The placing table has a printing area, and the printing area has a front side and a rear side along the cloth transport direction. The equipment box is arranged at the lower side of the placement table; A roller, arranged on a placing table, for unwinding and rewinding the fabric; The tension roller is arranged between the two rollers and is used to apply a certain tension to the fabric in the longitudinal direction; The stretching assembly is arranged in the equipment box and located on both sides of the cloth in the transverse direction, and is used to apply tension to the cloth in the transverse direction; The stretching components include: An annular baffle, fixedly arranged in the equipment box; An annular chain is sleeved on the outer side of the annular baffle; The articulated blocks are provided in multiple groups and are articulated and arranged along the ring chain; The spreading block is slidably arranged on the hinge block and is used for absorbing the cloth and spreading the cloth laterally; A magnet head is arranged at one end of the stretching block; The electromagnet part is fixedly arranged in the equipment box.

2. The digital printing device according to claim 1, characterized in that: A driving motor is fixedly connected in the equipment box, a notch is arranged on the annular baffle, an output end of the driving motor is arranged in the notch of the annular baffle, and a driving wheel for driving an annular chain is fixedly connected to the output end of the driving motor.

3. The digital printing device according to claim 2, characterized in that: A fan is fixedly connected in the equipment box, and a suction head is connected to the suction end of the fan. A through groove connected to the suction head is provided on the annular baffle, and a connecting groove for the suction head to be placed is provided on the hinge block. A connecting pipe connected to the connecting groove is provided on the hinge block, and an inner cavity is provided on the support block. One end of the connecting pipe is inserted into the inner cavity, and a small suction hole connected to the inner cavity is provided on the support block.

4. The digital printing device according to claim 3, characterized in that: The cross section of the annular baffle is a runway-shaped structure with two straight side edges, one of which is close to the edge of the cloth. The placement table is provided with notches on both sides of the printing area, one of which is close to the notch.

5. The digital printing device according to claim 1, characterized in that: The electromagnet member comprises: The suction electromagnet fixed to the equipment box and located at one end of the front side of the printing area and the repulsion electromagnet located at one end of the rear side of the printing area are both arranged at the straight side of the annular baffle.

6. The digital printing device according to claim 5, characterized in that: The air suction head has an air suction port extending along the straight edge of the annular baffle, one end of the air suction port is located in front of the suction electromagnet, and the other end is located in front of the repulsion electromagnet.

7. The digital printing device according to claim 4, characterized in that: The support block on one side of the straight edge of the annular baffle is located at the lower side of the notch on the placing table, and a portion of its projection on the placing table is located in the notch.

8. The digital printing device according to claim 2, characterized in that: The endless chain comprises an articulated portion for articulating the articulated block and a side portion contacting the driving wheel.

9. The digital printing device according to claim 1, characterized in that: The placing table is fixedly connected with a bracket located at the front and rear sides of the printing area, the roller is rotatably arranged on the bracket, the end of the tension roller is slidably arranged on the bracket, and an elastic member is connected between the bracket and the end of the tension roller.

10. The digital printing device according to claim 4, characterized in that: A rubber pad is arranged on the upper end of the propping block, and a chamfer is arranged at the notch on the placing table.

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