Turnover executing mechanism for cloth double-sided printing

Abstract

The invention relates to the technical field of cloth printing, in particular to an overturning executing mechanism for cloth double-sided printing, which comprises a machine frame, an overturning assembly is arranged at the top of the inner wall of one end of the machine frame, and a supporting assembly located below the overturning assembly is arranged at the bottom of the inner wall of one end of the machine frame; the driving mechanism is arranged on the machine frame and used for driving the overturning assembly and the supporting assembly to work; the leading-out frame is fixedly arranged between one end of the top of the machine frame and the other end of the top of the machine frame, and the leading-out frame is formed by fixing an S-shaped frame and a Z-shaped frame. Cloth can be firmly fixed to the surface of the overturning roller, the problem of position deviation caused by centrifugal force or external force interference in the overturning process is avoided, continuous tensioning force is provided for the cloth, wrinkles are reduced, the unique curve structure of the leading-out frame can guide the cloth to enter the follow-up process in the same horizontal direction after overturning, and the production efficiency is improved. Cloth deviation caused by path mutation is avoided, and a foundation is laid for precise printing.

Description

Technical Field

[0001] The present invention relates to the technical field of cloth printing, in particular to a turnover actuator for double-sided printing of cloth. Background Art

[0002] Fabric printing, a process that transfers patterns, colors, or textures to the surface of fabrics (such as cotton, linen, silk, and chemical fibers) through a specific process, is a crucial element in the decoration and beautification of textiles. It allows fabrics originally painted in a single color to appear rich in patterns and colors, satisfying diverse design needs and aesthetic preferences. It is widely used in clothing, home textiles (such as curtains and bed sheets), and decorative fabrics. Double-sided printing is a common requirement in fabric processing. By printing different patterns on both sides of the fabric, the aesthetics and added value of the fabric can be significantly enhanced. One of the key steps in achieving double-sided printing is the precise and efficient flipping of the fabric to allow the printing equipment to print on the other side.

[0003] At present, the existing fabric turning mechanism mainly relies on the motor to drive the turning roller to drive the fabric to turn over. Specifically, the motor outputs power to drive the turning roller to rotate, and the fabric rotates with it under the action of the friction between the turning roller and the turning roller, thereby achieving a 180-degree turning. However, this traditional turning method has many defects that are difficult to overcome: First, during the turning process, the fabric only relies on the friction between the turning roller to achieve the following rotation, and lacks effective constraints on the fabric, which makes it easy for the fabric to have problems such as position deviation and wrinkles when turning, especially for light, thin and soft fabrics. This phenomenon is more obvious; secondly, and the most critical problem, the fabric after turning over is layered, because the rotation trajectory of the turning roller is arc-shaped, and the fabric rotates 180 degrees with the turning roller. During an 80-degree flip, the movement paths of different parts of the fabric differ. The parts closer to the flip roller and farther from the flip roller occupy different spatial positions at the moment of flipping, resulting in a layered state. When the fabric in this layered state enters the subsequent printing equipment, it cannot enter in the same horizontal direction, which will cause a series of serious printing defects. For example, the printed pattern may be misaligned, with pattern elements that should be aligned deviating from each other, destroying the overall aesthetic. The pattern may also become blurred because the unevenness of the fabric causes an inconsistent distance between the printing head and the fabric, affecting the adhesion of the printing paste. In more serious cases, there may even be a phenomenon of missing prints, that is, some areas are not printed, resulting in defective products. These printing defects not only reduce product quality but also increase production costs, which is not conducive to the long-term development of the enterprise. Therefore, the existing fabric flipping mechanism in the double-sided printing process has problems such as the fabric layering after flipping and the inability to enter the printing equipment horizontally. These problems have become a major bottleneck restricting the improvement of printed product quality. Therefore, it is urgent to propose a flip actuator for double-sided fabric printing to improve the above problems. Summary of the Invention

[0004] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the cloth becomes separated into upper and lower layers after being turned over and cannot enter the printing equipment horizontally.

[0005] To solve the above problems, the present invention provides a flip actuator for double-sided printing of fabric, comprising: A machine frame, wherein a flip assembly is provided at the top of an inner wall at one end of the machine frame, and a support assembly is provided at the bottom of an inner wall at one end of the machine frame and is located below the flip assembly; A driving mechanism, which is arranged on the machine frame and is used to drive the flip assembly and the support assembly to work; The lead frame is fixedly installed between one end of the top and the other end of the frame, and the lead frame is fixedly composed of an S-shaped frame and a Z-shaped frame, and limit plates are fixedly installed on both sides of the bottom inner wall of the lead frame; A card roller assembly, the card roller assembly is inserted into the interior of the lead frame; A smoothing component, the smoothing component is arranged at the discharge end of the lead frame; The lifting mechanism is arranged on the lead-out frame and is used to drive the card roller assembly and the smoothing assembly to move up and down.

[0006] Furthermore, the flip assembly includes first mounting holes provided on both sides of the top of one end of the machine frame, and the inner wall of the first mounting hole is rotatably connected to a flip roller through a bearing, the circumference of the flip roller is provided with grooves distributed at equal distances, and the inner walls of the grooves are fixedly installed with suction nozzles distributed at equal distances, a suction hole is provided in the middle of one end of the flip roller, and connecting holes are provided on the inner wall of the suction hole and one end of the suction nozzle, a vacuum pump and a vacuum tank are fixedly installed on the outer wall of one side of the machine frame, and a suction pipe inserted in the suction hole is fixedly installed on the suction end of the vacuum pump, the outer wall of the suction pipe is rotatably connected to the inner wall of the suction hole through a sealing bearing, a valve is fixedly installed on the air inlet end of the vacuum tank, and a connecting pipe is fixedly installed between the valve and the vacuum pump.

[0007] Furthermore, a detachment seat for separating the suction nozzle from the cloth is fixedly installed on one end of the top inner wall of the machine frame, and one end of the detachment seat is provided with a rounded corner, and the top surface of the detachment seat, the bottom inner wall of the lead-out frame and the circumferential surface of the flip roller are flush.

[0008] Furthermore, the support assembly includes second mounting holes provided on both sides of the bottom of one end of the machine frame, and the inner wall of the second mounting hole is rotatably connected to the support roller through a bearing, and the cloth runs along the top of the support roller and the bottom of the flip roller. The circumference of the support roller is provided with equidistantly distributed connecting grooves, and the inner walls of the connecting grooves are rotatably connected to an inclined tensioning seat through a pin shaft, and the direction of the tensioning seat is toward the direction of cloth running, and a V-shaped elastic metal plate is fixedly installed between the tensioning seat and the connecting groove.

[0009] Furthermore, the driving mechanism includes a driving gear and a driven gear respectively fixedly mounted on the other end of the flip roller and the other end of the support roller, and the driving gear is meshed with the driven gear. A driving motor for driving the support roller to rotate is fixedly mounted on the outer wall of one side of the machine frame.

[0010] Furthermore, the card roller assembly includes two lifting plates, and the two lifting plates are respectively inserted into the gaps formed between the inner walls on both sides of the lead frame and the outer wall on one side of the limit plate. The opposite sides of the two lifting plates are rotatably connected with a plurality of anti-slip card rollers attached to the fabric. The tops of the two limit plates are provided with card slots for inserting anti-slip card rollers. The contour shapes of the limit plates and the lifting plates are respectively adapted to the contours of the inner walls of the lead frame, and can be positioned along the extension direction of the lead frame.

[0011] Furthermore, the lifting mechanism includes a U-shaped support plate fixedly installed on the top of the lead-out frame, and a threaded column is rotatably connected to the middle of the U-shaped support plate, and a forward and reverse motor for driving the threaded column to rotate is fixedly installed on the top of the U-shaped support plate. The top of the two lifting plates is fixedly installed with the same lifting frame, and the lifting frame is provided with a threaded hole that is screwed to the outer wall of the threaded column. The lifting frame is also provided with multiple guide holes, and a guide column passing through the guide hole is fixed to the inner wall of the top of the U-shaped support plate.

[0012] Furthermore, the smoothing assembly includes a mounting groove provided at the bottom of the discharge end of the lead-out frame, and the inner walls of the two mounting grooves are fixedly installed with mounting plates, the two mounting plates are provided with guide grooves, and the inner walls of the two guide grooves are slidably provided with a lifting frame, one end of the two lifting frames and the top of one of the lifting plates are fixedly installed with the same traction frame, the inner walls of the two guide grooves are also slidably provided with a mounting sleeve, and the inner walls of the mounting sleeve are rotatably connected to the same tensioning roller through bearings, a tensioning assembly is provided at the top of the mounting sleeve and the inside of the lifting frame, the bottom of the two mounting plates are rotatably connected to the smoothing roller through bearings, and the tensioning roller is located above the smoothing roller, the top ends of one side of the two mounting plates are rotatably connected to guide rollers, and the guide rollers are located above the tensioning roller, and the cloth runs along the surface of the guide roller, the bottom of the tensioning roller and the top of the smoothing roller.

[0013] Furthermore, the tensioning assembly includes a socket opened at the bottom of the lifting frame, and a movable seat is fixed on the top of the mounting block, which passes through the socket and is inserted into the lifting frame. The cross-section of the movable seat is designed to be T-shaped, and a spring is fixedly installed on the top of the movable seat and the top inner wall of the lifting frame.

[0014] Furthermore, a plurality of feed rollers alternately distributed up and down are rotatably connected to the inner wall of one side of the machine frame close to the flip assembly, and the cloth alternately passes around the feed rollers distributed up and down to form an S-shaped path for transportation, and a support frame is fixedly installed at the bottom of the machine frame.

[0015] In summary, after adopting the above structure, the present invention has the following advantages compared with the prior art: 1. In the present invention, within the turning assembly, suction nozzles are arranged at equal intervals within the grooves around the turning roller. A negative pressure system consisting of a vacuum pump, a vacuum tank, connecting holes, and suction holes generates a stable suction force when the fabric contacts the turning roller. This suction force replaces the traditional drive method that relies solely on friction, firmly securing the fabric to the surface of the turning roller. Even for thin, soft fabrics (such as silk and chiffon), this prevents positional shifting caused by centrifugal force or external interference during the turning process. Simultaneously, within the connecting groove around the support roller, a tensioning seat is connected to the connecting groove via a V-shaped elastic metal plate. The tensioning seat is inclined toward the direction of fabric travel. As the fabric runs along the top of the support roller and the bottom of the turning roller, the tensioning seat, under the elastic force of the V-shaped elastic metal plate, maintains contact with the fabric surface, providing continuous tension to the fabric. This effectively offsets any slack that may occur during the turning process, reducing wrinkles. This is particularly suitable for thin, soft fabrics.

[0016] 2. In the present invention, one end of the disengagement seat on the top inner wall of the machine frame is provided with a rounded corner, and its top surface is flush with the circumferential surface of the turning roller and the bottom inner wall of the lead-out frame. When the cloth is turned 180 degrees with the turning roller, the disengagement seat can guide the cloth to smoothly disengage from the suction nozzle, avoiding cloth wrinkles caused by pulling during separation, and ensuring that the cloth directly enters the horizontal conveying path, fundamentally solving the problem of cloth upper and lower delamination caused by the arc trajectory of the traditional turning mechanism; at the same time, the lead-out frame is fixed by an S-shaped frame and a Z-shaped frame. Its unique curved structure can guide the cloth to enter the subsequent process in the same horizontal direction after turning, avoiding cloth deviation due to sudden path changes, laying the foundation for precise printing.

[0017] 3. In the present invention, the lifting mechanism drives the threaded column to rotate through the forward and reverse motors, so that the lifting frame can be lifted and lowered along the guide column, thereby driving the card roller assembly and the smoothing assembly to rise and fall synchronously. This design can flexibly adjust the distance between the anti-slip card roller and the bottom of the lead-out frame according to the thickness of the fabric, ensuring effective restraint for fabrics of different thicknesses and enhancing the versatility of the equipment; moreover, when the fabric is conveyed in the lead-out frame, the arrangement of the two limit plates provides precise guidance for the movement of the fabric, ensuring a stable movement trajectory of the fabric. At the same time, the anti-slip card roller can prevent the fabric from tilting upward or deviating left and right, which can significantly improve the conveying stability, especially when processing easily slippable chemical fiber fabrics.

[0018] 4. In the present invention, the tensioning roller is slidably connected to the guide groove through the mounting block, and the movable seat on the top of the mounting block is connected to the spring in the lifting frame. When the lifting mechanism descends, the traction frame moves down synchronously, and the elastic force of the spring can enable the tensioning roller to generate continuous elastic tension on the cloth. When the tension of the cloth changes due to fluctuations in the conveying speed, the tensioning roller can adaptively adjust its position through the expansion and contraction of the spring, always keeping the cloth in a tensioned state to avoid loose wrinkles; at the same time, the smoothing roller and the tensioning roller cooperate to form an up and down squeeze on the cloth. After the cloth passes through the tensioning roller, the smoothing roller can further flatten the fine wrinkles on the surface of the cloth, ensuring that the cloth is in a completely flat state when entering the printing equipment, thereby forming a secondary smoothing effect, which can effectively avoid defects such as misalignment of the printed pattern, local blurring or missing printing due to uneven cloth. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional diagram of a flip actuator for double-sided printing of cloth according to the present invention; Figure 2 This is a top view of a flip actuator for double-sided printing of fabrics according to the present invention; Figure 3 This is a front cross-sectional view of a flip actuator for double-sided printing of fabric according to the present invention; Figure 4 This is a schematic structural diagram of a frame and a disengagement seat of a flip actuator for double-sided printing of cloth according to the present invention; Figure 5 This is a schematic structural diagram of a turning roller and a driving gear of a turning actuator for double-sided printing of cloth according to the present invention; Figure 6 This is a schematic structural diagram of a flip assembly of a flip actuator for double-sided printing of cloth according to the present invention; Figure 7 This is a schematic structural diagram of a support assembly of a flip actuator for double-sided printing of fabrics according to the present invention; Figure 8 This is a schematic diagram of the lead frame structure of a flip actuator for double-sided printing of cloth according to the present invention; Figure 9 This is a schematic structural diagram of a lead-out frame and a limit plate of a flip actuator for double-sided printing of fabrics according to the present invention; Figure 10 This is a schematic structural diagram of a card roller assembly and a smoothing assembly of a turnover actuator for double-sided printing of cloth according to the present invention; Figure 11 This is a three-dimensional diagram of a smoothing component of a flip actuator for double-sided printing of cloth according to the present invention; Figure 12 This is a schematic diagram of the spring and movable seat structure of a flip actuator for double-sided printing of cloth according to the present invention; Figure 13 The present invention is a schematic diagram of the lifting mechanism structure of a turnover actuator for double-sided printing of cloth.

[0020] Description of the numbers in the figure: 1. Support frame; 2. Machine frame; 3. Driving mechanism; 31. Driving motor; 32. Driving gear; 33. Driven gear; 4. Turning assembly; 41. Turning roller; 42. Suction nozzle; 43. Vacuum pump; 44. Suction pipe; 45. Suction hole; 46. Connecting hole; 47. Groove; 48. Vacuum tank; 49. Connecting pipe; 410. Separation seat; 5. Lead frame; 51. S-shaped frame; 52. Z-shaped frame; 6. Limiting plate; 7. Card roller assembly; 71. Lifting plate; 72. Anti-slip card roller; 8. Lifting mechanism; 81. U Support plate; 82. Forward and reverse motor; 83. Lifting frame; 84. Threaded column; 85. Guide column; 9. Smoothing assembly; 91. Mounting groove; 92. Mounting plate; 93. Traction frame; 94. Smoothing roller; 95. Tensioning roller; 96. Guide roller; 97. Guide groove; 98. Lifting frame; 99. Spring; 910. Movable seat; 911. Mounting block; 10. Feed roller; 11. Support assembly; 111. Support roller; 112. Connecting groove; 113. V-shaped elastic metal plate; 114. Tensioning seat; 12. Card slot. DETAILED DESCRIPTION

[0021] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0022] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "disposed" should be understood in a broad sense. For example, they may refer to fixed connection or disposition, detachable connection or disposition, or integral connection or disposition. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0024] See also Figures 1-13The present invention provides a flip actuator for double-sided printing of cloth, comprising: The machine frame 2 is provided with a flip assembly 4 at the top of the inner wall of one end of the machine frame 2. The flip assembly 4 includes first mounting holes on both sides of the top of one end of the machine frame 2, and the inner wall of the first mounting hole is rotatably connected to a flip roller 41 through a bearing. The circumference of the flip roller 41 is provided with grooves 47 distributed at equal distances, and the inner walls of the grooves 47 are fixedly installed with suction nozzles 42 distributed at equal distances. A suction hole 45 is provided in the middle of one end of the flip roller 41, and the inner wall of the suction hole 45 and one end of the suction nozzle 42 are provided with connecting holes 46. A vacuum pump 43 and a vacuum tank 48 are fixedly installed on the outer wall of one side of the machine frame 2, and the suction end of the vacuum pump 43 is fixedly installed with a suction pipe 44 inserted in the suction hole 45. The outer surface of the suction pipe 44 The wall is rotatably connected to the inner wall of the suction hole 45 through a sealed bearing, a valve is fixedly installed at the air inlet end of the vacuum tank 48, and a connecting pipe 49 is fixedly installed between the valve and the vacuum pump 43, and a disengagement seat 410 for separating the suction nozzle 42 from the cloth is fixedly installed at one end of the top inner wall of the machine frame 2, and one end of the disengagement seat 410 is provided with a rounded corner, the top surface of the disengagement seat 410, the bottom inner wall of the lead-out frame 5 and the circumferential surface of the flip roller 41 are flush, and a support assembly 11 located below the flip assembly 4 is provided at the bottom of the inner wall of one end of the machine frame 2, and the support assembly 11 includes a second mounting hole opened on both sides of the bottom of one end of the machine frame 2, and the inner wall of the second mounting hole is rotatably connected to the support roller 111 through a bearing, and the cloth moves along the support The top of the roller 111 and the bottom of the flip roller 41 run, and the circumference of the supporting roller 111 is provided with connecting grooves 112 distributed at equal distances, and the inner walls of the connecting grooves 112 are connected to an inclined tensioning seat 114 through a pin shaft. The direction of the tensioning seat 114 faces the direction of the cloth running. A V-shaped elastic metal plate 113 is fixedly installed between the tensioning seat 114 and the connecting groove 112. The tensioning seat 114 and the suction nozzle 42 are both made of soft and wear-resistant silicone. The negative pressure system composed of the vacuum pump 43, the vacuum tank 48, the connecting hole 46, the suction hole 45 and the suction nozzle 42 can generate stable suction when the cloth contacts the flip roller 41. This adsorption force replaces the traditional driving force that relies solely on friction. The dynamic mode can firmly fix the cloth on the surface of the turning roller 41, avoiding the problem of cloth position deviation caused by centrifugal force or external force interference during the turning process. At the same time, the elastic force of the tensioning seat 114 and the V-shaped elastic metal plate 113 in the support assembly 11 provides continuous tension for the cloth, effectively offsetting the relaxation of the cloth that may occur during the turning process and reducing wrinkles. Moreover, after the cloth completes a 180-degree turn with the turning roller 41, the separation seat 410 can guide the cloth to smoothly separate from the suction nozzle 42, avoiding cloth wrinkles caused by pulling during separation, and ensuring that the cloth directly enters the horizontal conveying path, fundamentally solving the problem of cloth upper and lower delamination caused by the arc trajectory of the traditional turning mechanism; The driving mechanism 3 is provided on the machine frame 2 and is used to drive the flip assembly 4 and the support assembly 11 to work; The lead-out frame 5 is fixedly installed between one end and the other end of the top of the machine frame 2, and the lead-out frame 5 is fixedly composed of an S-shaped frame 51 and a Z-shaped frame 52. Limiting plates 6 are fixedly installed on both sides of the bottom inner wall of the lead-out frame 5. Since the lead-out frame 5 is fixedly composed of the S-shaped frame 51 and the Z-shaped frame 52, its unique curved structure can guide the cloth to enter the subsequent process in the same horizontal direction after flipping, avoiding cloth deviation due to sudden path changes, laying the foundation for precise printing; The card roller assembly 7 is inserted into the interior of the lead frame 5; A smoothing component 9 is provided at the discharge end of the lead frame 5; The lifting mechanism 8 is arranged on the lead-out frame 5 and is used to drive the card roller assembly 7 and the smoothing assembly 9 to move up and down.

[0025] In the present invention, the driving mechanism 3 includes a driving gear 32 and a driven gear 33 fixedly mounted on the other end of the flip roller 41 and the other end of the support roller 111, respectively, and the driving gear 32 is meshed with the driven gear 33. A driving motor 31 for driving the support roller 111 to rotate is fixedly mounted on the outer wall of one side of the machine frame 2. The support roller 111 is driven to rotate by the driving motor 31, and the meshing transmission of the driving gear 32 and the driven gear 33 is coordinated to realize the synchronous operation of the flip roller 41 and the support roller 111.

[0026] In the present invention, the card roller assembly 7 includes two lifting plates 71, and the two lifting plates 71 are respectively inserted into the gaps formed between the inner walls on both sides of the lead-out frame 5 and the outer wall on one side of the limit plate 6. The opposite sides of the two lifting plates 71 are rotatably connected with a plurality of anti-slip card rollers 72 that fit on the cloth. The tops of the two limit plates 6 are provided with card slots 12 for inserting the anti-slip card rollers 72. The contour shapes of the limit plates 6 and the lifting plates 71 are respectively adapted to the inner wall contours of the lead-out frame 5, and can be positioned along the extension direction of the lead-out frame 5. When the cloth is conveyed in the lead-out frame 5, the two limit plates 6 can provide precise guidance for the movement of the cloth, ensuring that the movement trajectory of the cloth is stable, and the anti-slip card rollers 72 can prevent the cloth from warping upward or deviating left and right, especially when processing easy-to-slide chemical fiber cloth, which can significantly improve the conveying stability.

[0027] The cam 83 is fixed on the top of the two lifting plates 71, and a threaded column 84 is rotatably connected to the cam 83 at the middle of the U-shaped support plate 81. A forward and reverse motor 82 is fixed on the top of the U-shaped support plate 81 to drive the threaded column 84 to rotate. The top of the two lifting plates 71 is fixedly installed with the same lifting frame 83, and a threaded hole is provided on the lifting frame 83 to be screwed to the outer wall of the threaded column 84. A plurality of guide holes are also provided on the lifting frame 83. A guide column 85 passing through the guide hole is fixed on the top inner wall of the U-shaped support plate 81. The forward and reverse motor 82 in the lifting mechanism 8 drives the threaded column 84 to rotate, so that the lifting frame 83 is lifted and lowered along the guide column 85, thereby driving the card roller assembly 7 and the smoothing assembly 9 to rise and fall synchronously, and flexibly adjusting the distance between the anti-slip card roller 72 and the bottom of the lead frame 5 to ensure effective restraint of fabrics of different thicknesses, enhance the versatility of the equipment, and flexibly adjust the position of the smoothing assembly 9 to facilitate full smoothing of the fabric.

[0028] The cam 91 is fixed to the top of the lifting frame 98 and the top of the lifting frame 98 is fixedly provided with a spring 99. The bearing is rotatably connected to the smoothing roller 94, and the tensioning roller 95 is located above the smoothing roller 94. The two ends of the top of one side of the two mounting plates 92 are rotatably connected to the guide rollers 96, and the guide rollers 96 are located above the tensioning roller 95. The cloth runs along the surface of the guide roller 96, the bottom of the tensioning roller 95 and the top of the smoothing roller 94. When the lifting mechanism 8 descends, the traction frame 93 moves down synchronously, driving the tensioning roller 95 to move down as well. The elastic force of the spring 99 in the tensioning assembly can enable the tensioning roller 95 to produce cloth. It generates continuous elastic tension. When the tension of the fabric changes due to fluctuations in the conveying speed, the tensioning roller 95 can adaptively adjust its position through the expansion and contraction of the spring 99, always keeping the fabric in a tensioned state to avoid loose wrinkles. Moreover, when the tensioning assembly is working, the smoothing roller 94 and the tensioning roller 95 cooperate to form an up and down squeeze on the fabric. After the fabric passes through the tensioning roller 95, the smoothing roller 94 can further flatten the fine wrinkles on the surface of the fabric, ensuring that the fabric is in a completely flat state when it enters the printing equipment.

[0029] In the present invention, a plurality of feed rollers 10 alternately distributed up and down are rotatably connected to the inner wall of the machine frame 2 near the flip assembly 4, and the cloth alternately passes around the feed rollers 10 distributed up and down to form an S-shaped path for transportation. A support frame 1 is fixedly installed at the bottom of the machine frame 2, and the cloth is formed into an S-shaped transportation path through the feed rollers 10, thereby increasing the tension of the cloth during transportation and avoiding the cloth from being loosened due to its own gravity or transportation inertia. Especially when transporting over long distances, it can ensure that the cloth is always in a taut state, providing stable incoming materials for subsequent flipping and printing processes.

[0030] In summary, the working principle of the present invention is: In the initial stage of fabric conveying, the fabric first enters between a plurality of feed rollers 10 provided on one side of the machine frame 2. These feed rollers 10 are alternately arranged up and down. When conveying, the fabric alternately passes around the upper and lower feed rollers 10, thus forming an S-shaped conveying path. After being conveyed by the feed roller 10, the fabric enters the interior of the machine frame 2. At this time, the fabric runs along the top of the support roller 111 in the support assembly 11 and the bottom of the flip roller 41 in the flip assembly 4. Then, the fabric enters the lead-out frame 5 along the surface of the flip roller 41, and passes through the lead-out frame 5, the guide roller 96 in the smoothing assembly 9, the tensioning roller 95 and the smoothing roller 94, and is led out from one end of the lead-out frame 5. Since the lead-out frame 5 is fixed by the S-shaped frame 51 and the Z-shaped frame 52, its unique curved structure can guide the fabric to enter the subsequent process in the same horizontal direction after flipping, avoiding the fabric deviation caused by sudden path changes, laying the foundation for accurate printing. At this time, the forward and reverse motor 82 in the lifting mechanism 8 is controlled to work, driving the threaded column 84 to rotate, driving the lifting frame 83 to move up and down along the guide column 85, and then driving the card roller assembly 7 and the smoothing assembly 9 to move up and down, so that the anti-slip card roller 72 in the card roller assembly 7 is attached to the fabric. The clamping slots 12 formed at the tops of the two limit plates 6 form effective upper and lower constraints on the cloth, preventing the cloth from deflecting or tilting during transportation. At the same time, the traction frame 93 in the smoothing assembly 9 moves downward synchronously, driving the tensioning roller 95 to move downward as well. The elastic force of the spring 99 in the tensioning assembly can enable the tensioning roller 95 to generate a continuous elastic tensioning force on the cloth. When the cloth tension changes due to fluctuations in the conveying speed, the tensioning roller 95 can adaptively adjust its position through the expansion and contraction of the spring 99, so as to always keep the cloth in a tensioned state and avoid loose wrinkles. Moreover, when the tensioning assembly is working, the smoothing roller 94 and the tensioning roller 95 can cooperate to form an upper and lower squeezing of the cloth. After the cloth passes through the tensioning roller 95, the smoothing roller 94 can further flatten the fine wrinkles on the surface of the cloth, ensuring that the cloth is in a completely flat state when it enters the printing equipment. After being processed by the smoothing assembly 9, the flat cloth is conveyed to the subsequent printing equipment. Moreover, during the conveying process, the driving motor 31 in the driving mechanism 3 is started to drive the supporting roller 111 to start rotating. Since the driven gear 33 fixedly installed at the other end of the supporting roller 111 is meshed with the driving gear 32 fixedly installed at the other end of the flip roller 41, the rotation of the supporting roller 111 will drive the flip roller 41 to rotate synchronously through the gear transmission. During the rotation of the flip roller 41, the vacuum pump 43 fixedly installed on the outer wall of one side of the machine frame 2 starts to work. The vacuum pump 43 exhausts the suction hole 45 opened in the middle of one end of the flip roller 41 through the suction pipe 44. The suction hole 45 is connected to the suction nozzle 42 on the inner wall of the groove 47 at the circumference of the flip roller 41 through the connecting hole 46, so that the suction nozzle 42 Generate negative pressure. When the cloth contacts the turning roller 41, the negative pressure generated by the suction nozzle 42 will firmly adsorb the cloth in the groove 47. As the turning roller 41 continues to rotate, the cloth is driven to complete a 180-degree turning action, realizing the double-sided conversion of the cloth. At the same time, the vacuum tank 48 on one side of the machine frame 2 is connected to the discharge end of the vacuum pump 43 through the connecting pipe 49. The vacuum tank 48 can store a certain amount of negative pressure gas, stabilize the negative pressure of the suction nozzle 42, and reduce the frequent start and stop of the vacuum pump 43. When the turned cloth rotates to the disengagement seat 410 with the turning roller 41, it will smoothly detach from the suction nozzle 42 and smoothly enter the lead-out frame 5, ensuring a smooth transition of the cloth from the turning state to the horizontal conveying state.

[0031] In view of current actual needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. A flip actuator for double-sided printing of cloth, characterized in that: include: A machine frame (2), wherein a flip assembly (4) is provided at the top of an inner wall at one end of the machine frame (2), and a support assembly (11) located below the flip assembly (4) is provided at the bottom of an inner wall at one end of the machine frame (2); A driving mechanism (3), the driving mechanism (3) being arranged on the machine frame (2) and being used to drive the flip assembly (4) and the support assembly (11) to work; An output frame (5), the output frame (5) is fixedly mounted between one top end and the other top end of the machine frame (2), and the output frame (5) is fixedly composed of an S-shaped frame (51) and a Z-shaped frame (52), and both sides of the bottom inner wall of the output frame (5) are fixedly mounted with limit plates (6); A card roller assembly (7), wherein the card roller assembly (7) is inserted into the interior of the lead frame (5); A smoothing component (9), wherein the smoothing component (9) is arranged at the discharge end of the lead frame (5); A lifting mechanism (8) is provided on the lead-out frame (5) and is used to drive the card roller assembly (7) and the smoothing assembly (9) to move up and down.

2. A reversing actuator for double-sided printing of cloth according to claim 1, characterized in that: The flip assembly (4) includes a first mounting hole provided on both sides of the top of one end of the machine frame (2), and the inner wall of the first mounting hole is rotatably connected to a flip roller (41) through a bearing, and grooves (47) distributed at equal distances are provided on the circumference of the flip roller (41), and suction nozzles (42) distributed at equal distances are fixedly installed on the inner walls of the grooves (47), and a suction hole (45) is provided in the middle of one end of the flip roller (41), and the inner wall of the suction hole (45) is aligned with the inner wall of the suction nozzle (42). A connecting hole (46) is provided at each end of the frame (2), a vacuum pump (43) and a vacuum tank (48) are fixedly installed on the outer wall of one side of the frame (2), and a suction pipe (44) inserted into the suction hole (45) is fixedly installed on the suction end of the vacuum pump (43), and the outer wall of the suction pipe (44) and the inner wall of the suction hole (45) are rotatably connected through a sealing bearing, a valve is fixedly installed on the air inlet end of the vacuum tank (48), and a connecting pipe (49) is fixedly installed between the valve and the vacuum pump (43).

3. The flip actuator for double-sided printing of cloth according to claim 2, characterized in that: A separation seat (410) for separating the suction nozzle (42) from the cloth is fixedly mounted on one end of the top inner wall of the machine frame (2), and one end of the separation seat (410) is provided with a rounded corner. The top surface of the separation seat (410), the bottom inner wall of the lead-out frame (5) and the circumferential surface of the turning roller (41) are flush.

4. The flip actuator for double-sided printing of cloth according to claim 3, characterized in that: The support assembly (11) includes second mounting holes provided on both sides of the bottom of one end of the machine frame (2), and the inner wall of the second mounting hole is rotatably connected to a support roller (111) via a bearing, and the cloth runs along the top of the support roller (111) and the bottom of the flip roller (41), and the circumference of the support roller (111) is provided with connecting grooves (112) distributed at equal distances, and the inner walls of the connecting grooves (112) are rotatably connected to an inclined tensioning seat (114) via a pin shaft, and the direction of the tensioning seat (114) faces the direction of cloth running, and a V-shaped elastic metal plate (113) is fixedly installed between the tensioning seat (114) and the connecting groove (112).

5. The flip actuator for double-sided printing of cloth according to claim 4, characterized in that: The driving mechanism (3) comprises a driving gear (32) and a driven gear (33) respectively fixedly mounted on the other end of the flip roller (41) and the other end of the support roller (111), and the driving gear (32) is meshed with the driven gear (33). A driving motor (31) for driving the support roller (111) to rotate is fixedly mounted on an outer wall of one side of the machine frame (2).

6. The flip actuator for double-sided printing of cloth according to claim 5, characterized in that: The card roller assembly (7) includes two lifting plates (71), and the two lifting plates (71) are respectively inserted into the gaps formed between the inner walls on both sides of the lead frame (5) and the outer wall on one side of the limit plate (6). The opposite sides of the two lifting plates (71) are rotatably connected to a plurality of anti-slip card rollers (72) attached to the fabric. The tops of the two limit plates (6) are provided with card slots (12) for inserting the anti-slip card rollers (72). The contour shapes of the limit plates (6) and the lifting plates (71) are respectively adapted to the contours of the inner walls of the lead frame (5), and can be positioned along the extension direction of the lead frame (5).

7. The flip actuator for double-sided printing of cloth according to claim 6, characterized in that: The lifting mechanism (8) includes a U-shaped support plate (81) fixedly mounted on the top of the lead-out frame (5), and a threaded column (84) is rotatably connected to the middle of the U-shaped support plate (81), and a forward and reverse motor (82) for driving the threaded column (84) to rotate is fixedly mounted on the top of the U-shaped support plate (81), and the tops of the two lifting plates (71) are fixedly mounted with the same lifting frame (83), and a threaded hole is provided on the lifting frame (83) and is screwed to the outer wall of the threaded column (84), and a plurality of guide holes are also provided on the lifting frame (83), and a guide column (85) passing through the guide hole is fixed on the inner wall of the top of the U-shaped support plate (81).

8. The flip actuator for double-sided printing of cloth according to claim 7, characterized in that: The smoothing component (9) includes a mounting groove (91) provided at the bottom of the discharge end of the lead frame (5), and the inner walls of the two mounting grooves (91) are fixedly provided with mounting plates (92), the two mounting plates (92) are provided with guide grooves (97), and the inner walls of the two guide grooves (97) are slidably provided with lifting frames (98), one end of the two lifting frames (98) and the top of one of the lifting plates (71) are fixedly provided with the same traction frame (93), the inner walls of the two guide grooves (97) are also slidably provided with mounting blocks (911), and the mounting blocks (911) The inner wall of the mounting plate (911) is rotatably connected to a tensioning roller (95) through a bearing, and a tensioning assembly is provided at the top of the mounting block (911) and the interior of the lifting frame (98). The bottoms of the two mounting plates (92) are rotatably connected to a smoothing roller (94) through a bearing, and the tensioning roller (95) is located above the smoothing roller (94). Both ends of the top of one side of the two mounting plates (92) are rotatably connected to a guide roller (96), and the guide roller (96) is located above the tensioning roller (95). The cloth runs along the surface of the guide roller (96), the bottom of the tensioning roller (95) and the top of the smoothing roller (94).

9. The flip actuator for double-sided printing of cloth according to claim 8, characterized in that: The tensioning assembly includes a socket opened at the bottom of the lifting frame (98), and a movable seat (910) is fixed on the top of the mounting block (911) and passes through the socket and is inserted into the lifting frame (98). The cross-section of the movable seat (910) is designed to be T-shaped, and a spring (99) is fixedly installed on the top of the movable seat (910) and the top inner wall of the lifting frame (98).

10. The flip actuator for double-sided printing of cloth according to claim 9, characterized in that: A plurality of feed rollers (10) alternately distributed up and down are rotatably connected to the inner wall of one side of the machine frame (2) close to the turning assembly (4), and the cloth alternately passes over the feed rollers (10) distributed up and down to form an S-shaped path for transportation. A support frame (1) is fixedly installed at the bottom of the machine frame (2).

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