Knitted fabric spinning device based on negative pressure technology

Abstract

The invention relates to the technical field of spinning equipment, in particular to a knitted fabric spinning device based on a negative pressure technology, which comprises a rack, a guide mechanism, a negative pressure mechanism and a first smoothing mechanism, the rack is provided with a horizontal working platform, and the knitted fabric is attached to the working platform; the guide mechanism forces the knitted fabric to be attached to the working platform; the negative pressure mechanism is arranged at the bottom of the working platform, a plurality of first through holes are formed in the working platform, and the first through holes communicate with the negative pressure mechanism; the first smoothing mechanism is fixedly arranged on the rack, a gap allowing the single-layer knitted fabric to penetrate through is formed between the first smoothing mechanism and the working platform, and the first smoothing mechanism is used for flattening the knitted fabric. According to the device, through cooperation of the first smoothing mechanism and the negative pressure mechanism, wrinkles and stacked areas on the knitted fabric are treated, and the flatness and smoothness of the knitted fabric are improved; and in the carrying and conveying process of the knitted fabric, the knitted fabric keeps good flatness, and the winding quality of the knitted fabric is improved.

Description

Technical Field

[0001] The present application relates to the field of textile equipment, and in particular to a weaving device for knitted fabrics based on negative pressure technology. Background Art

[0002] Knitted fabric is a kind of fabric formed by bending yarn into shape and interlacing it with each other through a knitting machine. Knitted fabric has the characteristics of soft texture, elasticity and extensibility. After the production and inspection of knitted fabric, the knitted fabric needs to be trimmed and trimmed; finally, the trimmed knitted fabric is rolled into a roll for easy transportation and storage.

[0003] During the winding process, knitted fabrics need to be transported for a long time to transport the long strips of knitted fabrics to the winding device for winding. During the transportation process, the knitted fabrics will be deformed by gravity, wind, etc., which will cause local wrinkles and local overlaps in the knitted fabrics during the winding process, affecting the factory quality of the knitted fabric rolls. Summary of the invention

[0004] In order to improve the flatness of knitted fabric during transportation and reduce wrinkles and stacking of knitted fabric during winding, the present application provides a knitting fabric weaving device based on negative pressure technology.

[0005] The present application provides a knitting device for knitted fabrics based on negative pressure technology, which adopts the following technical solution: A knitted fabric weaving device based on negative pressure technology, comprising a frame, a guide mechanism, a negative pressure mechanism and a first smoothing mechanism; the frame is provided with a horizontal working platform, the knitted fabric is attached to the working platform, and arc chamfers are provided on both sides of the working platform along the conveying direction of the knitted fabric; along the conveying direction of the knitted fabric, the guide mechanism comprises a first guide roller and a second guide roller in sequence, the first guide roller and the second guide roller are arranged on the frame on both sides of the working platform, and the bottom elevations of the first guide roller and the second guide roller are lower than the elevation of the working platform; along the conveying direction of the knitted fabric, , a plurality of negative pressure mechanisms are arranged at intervals, the negative pressure mechanism is arranged at the bottom of the working platform, a plurality of first through holes are opened on the working platform, the first through holes are connected with the negative pressure mechanism, the negative pressure mechanism is used for the air between the knitted cloth and the working platform to force the knitted cloth to fit the working platform; the first smoothing mechanism is fixed on the frame, and the first smoothing mechanism is arranged on the material incoming side of the working platform, a gap is provided between the first smoothing mechanism and the working platform for the single layer of the knitted cloth to pass through, and the first smoothing mechanism is used to flatten the knitted cloth.

[0006] By adopting the above technical solution, under the action of the first guide roller and the second guide roller, the knitted fabric is initially flattened on the working platform to reduce the risk of deformation of the knitted fabric.

[0007] Under the action of external traction force, the knitted fabric passes through the gap between the first smoothing mechanism and the working platform; during the movement of the knitted fabric, the first smoothing mechanism flattens the knitted fabric to deal with wrinkles and overlapping areas on the knitted fabric, thereby improving the flatness and smoothness of the knitted fabric.

[0008] The negative pressure mechanism extracts the gas between the knitted fabric and the working platform through the first through hole, so that the knitted fabric is tightly attached to the working platform in the negative pressure environment. After the first smoothing mechanism flattens the knitted fabric, the negative pressure mechanism fixes the knitted fabric; on the one hand, the knitted fabric is fixed on the working platform, which can reduce the risk of wrinkles and folds in the knitted fabric being reset, improve the flattening effect of the first smoothing mechanism on the knitted fabric, and further improve the flatness of the knitted fabric; on the other hand, during the transportation of the knitted fabric, the negative pressure mechanism can reduce the risk of new wrinkles and folds in the knitted fabric, so that the knitted fabric maintains good flatness, thereby improving the winding quality of the knitted fabric.

[0009] In summary: through the coordinated cooperation of the first smoothing mechanism and the negative pressure mechanism, the wrinkles and overlapping areas on the knitted fabric are processed to improve the flatness and smoothness of the knitted fabric; during the handling and transportation of the knitted fabric, the knitted fabric maintains good flatness and improves the winding quality of the knitted fabric.

[0010] Optionally, the first smoothing mechanism includes a fixing member, an abutment member, a spring member, a connecting bolt and a connecting nut; the fixing member is fixed on the frame, the abutment member is arranged on the side of the fixing member close to the working platform, the connecting bolt is fixedly connected to the abutment member, the fixing member is provided with a mounting hole for the connecting bolt to pass through, the connecting nut is connected to the connecting bolt, the spring member is sleeved on the outer periphery of the connecting bolt, and the spring member is arranged between the fixing member and the abutment member.

[0011] By adopting the above technical solution, the distance between the abutment member and the working platform can be adjusted through the coordinated cooperation of the fastening nut and the spring member to adapt to knitted fabrics of different thicknesses.

[0012] Optionally, the abutment member is an arc-shaped structure, and the opening direction of the abutment member is arranged toward the second guide roller; the knitted fabric is inserted into the gap between the abutment member and the working platform.

[0013] By adopting the above technical solution, the abutment member is an arc-shaped structure, so when the knitted cloth is passed through the gap between the abutment member and the working platform, the abutment member will scrape the knitted cloth flat along the direction from the middle area to the outer edge area of ​​the knitted cloth, so as to improve the flattening effect of the abutment member on the knitted cloth and improve the flatness of the knitted cloth during handling and transportation.

[0014] Optionally, the negative pressure mechanism includes a vacuum machine, an exhaust main pipe and an exhaust pipe network, the exhaust pipe network is fixed on the frame, and the exhaust pipe network is connected to the first through hole, one end of the exhaust main pipe is connected to the exhaust pipe network, and the other end of the exhaust main pipe is connected to the vacuum machine.

[0015] By adopting the above technical solution, the vacuum machine performs vacuum processing on the first through hole, so that the knitted fabric is closely attached to the working platform.

[0016] Optionally, it also includes a second smoothing mechanism, at least one second smoothing mechanism is provided, the second smoothing mechanism is provided between adjacent negative pressure mechanisms, and the second smoothing mechanism is fixed to the bottom of the working platform; a flow channel for gas flow is provided inside the second smoothing mechanism, the direction of the flow channel is provided perpendicular to the conveying direction of the knitted cloth, and the gas flows from the middle to the outside of the working platform; a second through hole is provided on the working platform, the second through hole is connected with the flow channel, the second through hole is a long strip through hole, and the length direction of the second through hole is perpendicular to the conveying direction of the knitted cloth.

[0017] By adopting the above technical solution, when the gas flows in the flow channel, the gas exerts a force on the knitted fabric, and the force is perpendicular to the length direction of the knitted fabric, so that the knitted fabric has a tendency to move to both sides. Therefore, when the knitted fabric still has wrinkles, overlaps, etc., the flowing gas will pull the knitted fabric to further flatten the knitted fabric, further improving the flatness of the knitted fabric during transportation.

[0018] Optionally, the second smoothing mechanism includes an air supply shell, the cross-section of the air supply shell is a groove-shaped structure, the air supply shell is fixedly connected to the working platform, and the air supply shell and the working platform are surrounded by the flow channel; the air supply shell is provided with an air inlet, and the air inlet is used to transport gas into the flow channel.

[0019] By adopting the above technical solution, gas is delivered to the flow channel through the air inlet pipe on the air delivery shell, so as to achieve the traction effect of the gas on the knitted cloth.

[0020] Optionally, along the gas flow direction, the air supply shell is divided into several air supply units, and the air supply units sequentially include a straight section, a closed section, a throat section and a flared section; along the gas flow direction, the size of the closed section decreases, and the size of the flared section increases; the size of the end of the straight section is equal to the maximum size of the closed section, and the size of the throat section is equal to the minimum size of the closed section and the flared section; the flow channel of the throat section is connected to the second through hole.

[0021] By adopting the above technical solution, the air supply shell is divided into a straight section, a closing section, a throat section and a flared section, so that when the gas flows in the flow channel, the gas will flow faster after passing through the closing section, so that the gas has a larger flow rate in the throat section, thereby increasing the pulling effect of the airflow on the knitted fabric.

[0022] Optionally, the second smoothing mechanism also includes an acceleration component, which is arranged in the straight section; the acceleration component includes a rotor, a synchronous gear set and a driving member; the rotor is arranged in the flow channel, and the rotor is rotatably connected to the air supply shell, and two rotors are provided, and blades are provided on the outer periphery of the rotor, and there is a phase difference between the blades of the two rotors; the rotating shafts of the two rotors are connected through a synchronous gear set to achieve synchronous rotation of the two rotors, and the rotation directions of the two rotors are opposite; the driving member is connected to one of the rotors, and the driving member is used to drive the two rotors to rotate, so that the two rotors accelerate the gas flow in the flow channel.

[0023] By adopting the above technical solution, an acceleration component is provided in the straight section of the air supply shell, so that the gas in the flow channel is accelerated to increase the flow rate of the gas in the throat section and improve the pulling effect of the gas on the knitted cloth.

[0024] Optionally, at least two accelerating components are provided, and the power of the accelerating components increases along the gas flow direction, so that the gas flow rate in the flow channel increases.

[0025] By adopting the above technical solution, the acceleration component close to the outside of the knitted cloth can obtain more gas; thereby making the gas near the periphery of the knitted cloth have a larger flow, so as to improve the traction effect of the gas on the edge area of ​​the knitted cloth.

[0026] Optionally, along the gas flow direction, the second through hole has a first guide surface and a second guide surface on both sides, and the gas flows through the first guide surface and the second guide surface in sequence; along the vertical upward direction, the distance from the first guide surface to the upper surface of the working platform decreases, and the distance from the second guide surface to the upper surface of the working platform increases.

[0027] By adopting the above technical solution, the inclined first guide surface and the second guide surface are arranged on the side wall of the second through hole, so as to enhance the pulling effect of the gas on the knitted cloth.

[0028] In summary, the present application includes at least one of the following beneficial technical effects: Through the coordinated cooperation of the first smoothing mechanism and the negative pressure mechanism, the wrinkles and overlapping areas on the knitted fabric are processed to improve the flatness and smoothness of the knitted fabric; during the transportation process of the knitted fabric, the knitted fabric maintains good flatness and improves the winding quality of the knitted fabric; The abutment piece is an arc-shaped structure, so when the knitted fabric passes through the gap between the abutment piece and the working platform, the abutment piece will scrape the knitted fabric flat along the direction from the middle area to the outer edge area of ​​the knitted fabric, so as to improve the flattening effect of the abutment piece on the knitted fabric and improve the flatness of the knitted fabric during the handling and transportation process; When the gas flows in the flow channel, the gas exerts a force on the knitted fabric, which is perpendicular to the length direction of the knitted fabric, so that the knitted fabric has a tendency to move to both sides. Therefore, when the knitted fabric still has wrinkles, overlaps, etc., the flowing gas will pull the knitted fabric to further flatten the knitted fabric, further improving the flatness of the knitted fabric during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Schematic diagram of the structure of the textile device in Example 1.

[0030] Figure 2 This is a structural side view of the textile device in Example 1.

[0031] Figure 3 yes Figure 1 Enlarged view of point A in the middle.

[0032] Figure 4 Schematic diagram of the working state of the textile device in Example 1.

[0033] Figure 5 yes Figure 2 Enlarged view of point B in the middle.

[0034] Figure 6 It is a schematic diagram of the structure of the textile device in Example 2.

[0035] Figure 7 It is a structural side view of the textile device in Example 2.

[0036] Figure 8 yes Figure 7 Enlarged view of point C in the middle.

[0037] Fig. 9 It is a structural schematic diagram of the second smoothing structure in Example 2.

[0038] Fig.10 It is a top view of the second smoothing mechanism in Example 2.

[0039] Fig.11 yes Fig.10 Enlarged view of point D in the middle.

[0040] Fig.12 It is a structural schematic diagram of the second smoothing structure in Example 2.

[0041] Fig.13 It is a schematic diagram showing the working principle of the second smoothing mechanism in Example 2.

[0042] Fig.14 yes Fig.13 Enlarged view of point E in the middle.

[0043] Explanation of reference numerals: 1, frame; 11, working platform; 12, first flattening area; 13, negative pressure area; 14, second flattening area; 15, first through hole; 16, second through hole; 161, first guide surface; 162, second guide surface; 2, guide mechanism; 21, first guide roller; 22, second guide roller; 3, negative pressure mechanism; 31, vacuum machine; 32, exhaust main pipe; 33, exhaust pipe network; 4, first smoothing mechanism; 41, fixing member; 42, abutment member; 421, rigid abutment member; 422, flexible abutment member; 43 , spring member; 44, connecting bolt; 45, connecting nut; 5, second smoothing mechanism; 51, air supply shell; 511, straight section; 5111, air inlet; 512, closing section; 513, throat section; 514, expanding section; 515, air supply unit; 52, acceleration assembly; 521, rotor; 522, driving member; 523, bearing; 524, synchronous gear set; 5241, driving gear; 5242, driven gear; 525, protective shell; 53, flow channel; 54, air intake pipe; 55, partition plate; 6, knitted cloth. DETAILED DESCRIPTION

[0044] The following is combined with Figure 1 -14 Provide further details of this application.

[0045] Example 1

[0046] The present application embodiment discloses a knitting device for knitted fabric based on negative pressure technology. Figure 1 and Figure 2The textile device of the present application is used to carry and convey the knitted fabric 6 to improve the flatness of the long strip of knitted fabric 6 during the carrying and conveying process. In this embodiment, the textile device of the present application is arranged in the previous process of the winding device, and the knitted fabric 6 is continuously conveyed under the action of the winding device, the conveying roller, etc.; the textile device of the present application is used to flatten the wrinkles and folded areas on the knitted fabric 6, improve the flatness of the knitted fabric 6, and improve the winding quality of the knitted fabric 6.

[0047] Reference Figure 1 and Figure 2 The knitted fabric weaving device based on negative pressure technology includes a frame 1, a guide mechanism 2, a negative pressure mechanism 3 and a first smoothing mechanism 4. In this embodiment, the conveying direction of the knitted fabric 6 is defined as the longitudinal direction, and the direction perpendicular to the conveying direction of the knitted fabric 6 is the transverse direction.

[0048] Reference Figure 1 and Figure 2 The frame 1 is provided with a horizontal working platform 11, and the knitted fabric 6 is attached to the working platform 11. Along the conveying direction of the knitted fabric 6, the working platform 11 is divided into a first flattening area 12 and a negative pressure area 13, the vertical projection of the first smoothing mechanism 4 is located in the first flattening area 12 of the working platform 11, and the vertical projection of the negative pressure mechanism 3 is located in the negative pressure area 13 of the working platform 11. Along the conveying direction of the knitted fabric 6, arc chamfers are provided on both sides of the working platform 11 to reduce the wear of the knitted fabric 6.

[0049] Reference Figure 1 and Figure 2 Along the conveying direction of the knitted fabric 6, the guide mechanism 2 includes a first guide roller 21 and a second guide roller 22 in sequence. The first guide roller 21 and the second guide roller 22 are arranged on the frame 1 on both sides of the working platform 11. The bottom elevations of the first guide roller 21 and the second guide roller 22 are lower than the elevation of the working platform 11. The knitted fabric 6 is sequentially wound around the bottom of the first guide roller 21, the upper surface of the working platform 11 and the bottom of the second guide roller 22; because the bottom elevations of the first guide roller 21 and the second guide roller 22 are lower than the elevation of the working platform 11, the knitted fabric 6 is arranged in contact with the upper surface of the working platform 11 under the action of the first guide roller 21 and the second guide roller 22.

[0050] Reference Figure 1 and Figure 3 The first smoothing mechanism 4 is fixed on the frame 1, and the first smoothing mechanism 4 is arranged on the incoming side of the working platform 11 close to the knitted cloth 6. A gap is provided between the first smoothing mechanism 4 and the working platform 11 for the single-layer knitted cloth 6 to pass through. The first smoothing mechanism 4 is used to flatten the knitted cloth 6.

[0051] Reference Figure 3The first smoothing mechanism 4 includes a fixing member 41, an abutting member 42, a spring member 43, a connecting bolt 44 and a connecting nut 45. The fixing member 41 is fixed on the frame 1, the abutting member 42 is arranged on the side of the fixing member 41 close to the working platform 11, the connecting bolt 44 is fixedly connected to the abutting member 42, the fixing member 41 is provided with a mounting hole for the connecting bolt 44 to pass through, the connecting nut 45 is connected to the connecting bolt 44, the spring member 43 is sleeved on the outer periphery of the connecting bolt 44, and the spring member 43 is arranged between the fixing member 41 and the abutting member 42. Therefore, through the coordinated cooperation of the connecting nut 45 and the spring member 43, the distance between the abutting member 42 and the working platform 11 can be adjusted to adapt to knitted fabrics 6 of different thicknesses.

[0052] Reference Figures 1 to 3 The abutment member 42 is an arc-shaped structure, and the opening direction of the abutment member 42 is arranged toward the second guide roller 22 ; the knitted fabric 6 is inserted into the gap between the abutment member 42 and the working platform 11 .

[0053] Reference Figure 3 and Figure 4 , so that when the knitted cloth 6 passes through the gap between the abutment 42 and the working platform 11; along the direction from the middle area to the outer edge area of ​​the knitted cloth 6, the abutment 42 will scrape the knitted cloth 6 flat to improve the flattening effect of the abutment 42 on the knitted cloth 6, and improve the flatness of the knitted cloth 6 during the handling and transportation process.

[0054] Reference Figure 3 and Figure 4 In this embodiment, the abutment 42 includes a rigid abutment 421 and a flexible abutment 422. The rigid abutment 421 is fixedly connected to the connecting bolt 44, and the flexible abutment 422 is fixedly arranged on the side of the rigid abutment 421 away from the connecting bolt 44. A gap is provided between the flexible abutment 422 and the working platform 11 for the single-layer knitted fabric 6 to pass through. Under normal conditions, the distance between the flexible abutment 422 and the working platform 11 is less than the thickness of the single-layer knitted fabric 6; therefore, when the knitted fabric 6 passes through the gap between the flexible abutment 422 and the working platform 11, the knitted fabric 6 will force the flexible abutment 422 to undergo a slight deformation, so that the flexible abutment 422 will exert a certain pressure on the knitted fabric 6. Therefore, when the knitted fabric 6 being transported passes through the gap between the flexible abutment 422 and the working platform 11, the flattening effect of the flexible abutment 422 on the wrinkles and folded areas on the knitted fabric 6 can be improved, the flatness of the knitted fabric 6 can be improved, and the winding quality of the knitted fabric 6 can be improved.

[0055] The rigid abutment member 421 is a hollow steel tube or a solid rod, and the flexible abutment member 422 is a rubber abutment sheet or a silicone abutment sheet. In this embodiment, the rigid abutment member 421 is a hollow steel tube, and the flexible abutment member 422 is a silicone abutment sheet.

[0056] Reference Figure 1 and Figure 2 Along the conveying direction of the knitted cloth 6, a plurality of negative pressure mechanisms 3 are arranged at intervals, and the negative pressure mechanism 3 is arranged at the bottom of the working platform 11. A plurality of first through holes 15 are opened on the negative pressure area 13 of the working platform 11, and the first through holes 15 are connected to the negative pressure mechanism 3. The negative pressure mechanism 3 is used to extract the air between the knitted cloth 6 and the working platform 11 to force the knitted cloth 6 to fit the working platform 11.

[0057] Reference Figure 2 and Figure 5 The negative pressure mechanism 3 includes a vacuum machine 31, an exhaust main pipe 32 and an exhaust pipe network 33. The exhaust pipe network 33 is fixed at the bottom of the working platform 11, and the exhaust pipe network 33 is connected to the first through hole 15. One end of the exhaust main pipe 32 is connected to the exhaust pipe network 33, and the other end of the exhaust main pipe 32 is connected to the vacuum machine 31. The vacuum machine 31 performs vacuum treatment on the first through hole 15, so that the knitted fabric 6 is closely attached to the working platform 11.

[0058] The implementation principle of a knitted fabric weaving device based on negative pressure technology in the embodiment of the present application is as follows: Reference Figure 2 Under the action of the first guide roller 21 and the second guide roller 22 , the knitted fabric 6 is initially flattened on the working platform 11 to reduce the risk of deformation of the knitted fabric 6 .

[0059] Reference Figure 4 Under the action of external traction force, the knitted cloth 6 is passed through the gap between the first smoothing mechanism 4 and the working platform 11; during the movement of the knitted cloth 6, the first smoothing mechanism 4 flattens the knitted cloth 6 to deal with the wrinkles and overlapping areas on the knitted cloth 6, thereby improving the flatness and smoothness of the knitted cloth 6.

[0060] Reference Figure 4 and Figure 5 , the negative pressure mechanism 3 extracts the gas between the knitted fabric 6 and the working platform 11, so that the knitted fabric 6 is tightly attached to the working platform 11 in the negative pressure environment. After the first smoothing mechanism 4 flattens the knitted fabric 6, the negative pressure mechanism 3 fixes the knitted fabric 6; on the one hand, the knitted fabric 6 is fixed on the working platform 11, which can reduce the risk of the knitted fabric 6 wrinkles and folds being reset, improve the flattening effect of the first smoothing mechanism 4 on the knitted fabric 6, and further improve the flatness of the knitted fabric 6. On the other hand, during the transportation of the knitted fabric 6, the negative pressure mechanism 3 can reduce the risk of new wrinkles and new folds in the knitted fabric 6 during the transportation, so that the knitted fabric 6 maintains good flatness, thereby improving the winding quality of the knitted fabric 6.

[0061] To sum up: through the coordinated cooperation of the first smoothing mechanism 4 and the negative pressure mechanism 3, the wrinkles and overlapping areas on the knitted fabric 6 are processed to improve the flatness and smoothness of the knitted fabric 6; during the handling and transportation process of the knitted fabric 6, the knitted fabric 6 maintains good flatness and improves the winding quality of the knitted fabric 6. Example 2

[0062] The difference between this embodiment 2 and embodiment 1 is that: Reference Figure 6 Along the conveying direction of the knitted fabric 6, the working platform 11 is divided into a first flattening area 12, a negative pressure area 13, a second flattening area 14 and a negative pressure area 13; a plurality of second through holes 16 are provided on the second flattening area 14. In this embodiment, along the conveying direction of the knitted fabric 6, two rows of second through holes 16 are provided, and each row of second through holes 16 has four second through holes 16; the second through holes 16 are long strip-shaped through holes, and the length direction of the second through holes 16 is perpendicular to the conveying direction of the knitted fabric 6.

[0063] Reference Figure 7 and Figure 8 The textile device further includes a second smoothing mechanism 5, at least one second smoothing mechanism 5 is provided, the second smoothing mechanism 5 is provided between adjacent negative pressure mechanisms 3, and the second smoothing mechanism 5 is fixedly provided at the bottom of the working platform 11. In this embodiment, two second smoothing mechanisms 5 are provided at intervals.

[0064] Reference Figure 8 and Fig. 9 The second smoothing mechanism 5 includes an air supply shell 51 and an acceleration component 52.

[0065] Reference Figure 8 and Fig. 9 The cross section of the air supply housing 51 is a groove-shaped structure. The air supply housing 51 is fixedly connected to the working platform 11, and the air supply housing 51 and the working platform 11 are sealed by a sealant. The air supply housing 51 and the working platform 11 are surrounded by a flow channel 53. The air supply housing 51 is provided with an air inlet pipe 54. The air supply housing 51 is provided with an air inlet port 5111 at the air inlet pipe 54, and the external gas flows into the flow channel 53 through the air inlet port 5111. In the flow channel 53, the gas flow direction is perpendicular to the conveying direction of the knitted cloth 6, and the gas flows from the middle of the working platform 11 to the outside.

[0066] Reference Fig.10 and Fig.11, along the gas flow direction, the air supply housing 51 is divided into a plurality of air supply units 515. In this embodiment, the air supply housing 51 is symmetrically arranged along the width direction of the knitted fabric 6; and a partition plate 55 is provided at the symmetry axis position of the air supply housing 51, thereby dividing the inside of the air supply housing 51 into two left and right flow channels 53. In this embodiment, the air supply housing 51 is divided into four air supply units 515, and two air supply units 515 are provided on both sides of the partition plate 55; in other embodiments, the number of air supply units 515 on both sides of the partition plate 55 can also be set to three, four, etc. The number of air supply units 515 is consistent with the number of second through holes 16 on the working platform 11.

[0067] Reference Fig.11 , along the gas flow direction, the air supply unit 515 includes a straight section 511, a closing section 512, a throat section 513 and a flared section 514 in sequence; along the gas flow direction, the size of the closing section 512 decreases, and the size of the flared section 514 increases; the size of the end of the straight section 511 is equal to the maximum size of the closing section 512, and the size of the throat section 513 is equal to the minimum size of the closing section 512 and the flared section 514. In this embodiment, the flow channel 53 of the throat section 513 is connected to the second through hole 16; so that the airflow in the flow channel 53 is used to flatten the knitted fabric 6.

[0068] Reference Fig.11 and Fig.12 The acceleration assembly 52 is disposed at the straight section 511 , and the acceleration assembly 52 includes a rotor 521 , a driving member 522 , a bearing 523 and a synchronous gear set 524 .

[0069] Reference Fig. 9 and Fig.11 , a rotor 521 is arranged in the flow channel 53, and two rotors 521 are provided. Blades are provided on the outer periphery of the rotors 521, and there is a phase difference between the blades of the two rotors 521. A fixing hole is provided at the bottom of the air supply housing 51, and a bearing 523 is installed in the fixing hole. The rotating shaft of the rotor 521 is fixedly connected to the inner ring of the bearing 523. The synchronous gear set 524 includes two meshing driving gears 5241 and a driven gear 5242, and the driving gear 5241 and the driven gear 5242 are fixedly arranged on the rotating shafts of the two rotors 521. In this embodiment, the driving member 522 is a motor, and the driving end of the driving member 522 is connected to the rotating shaft where the driving gear 5241 is located. Therefore, when the driving member 522 is working, the driving member 522 can drive the two rotors 521 to rotate synchronously through the synchronous gear set 524, and the rotation directions of the two rotors 521 are opposite. The two rotors 521 rotate synchronously to accelerate the circulation of the gas in the flow channel 53.

[0070] Reference Figure 8 and Fig. 9A protective housing 525 is provided on the outer periphery of the synchronous gear set 524 to isolate the synchronous gear set 524 from the external environment.

[0071] Reference Fig.10 and Fig.11 In this embodiment, the power of the acceleration assembly 52 increases along the gas flow direction, so that the gas flow rate in the flow channel 53 increases. In this embodiment, the power difference between different acceleration assemblies 52 is achieved by the rotation speed of the driving member 522.

[0072] Reference Fig.13 and Fig.14 In this embodiment, along the gas flow direction, the second through hole 16 has a first guide surface 161 and a second guide surface 162 on both sides, and the gas flows through the first guide surface 161 and the second guide surface 162 in sequence; along the vertical upward direction, the distance from the first guide surface 161 to the upper surface of the working platform 11 decreases, and the distance from the second guide surface 162 to the upper surface of the working platform 11 increases. By arranging the inclined first guide surface 161 and the second guide surface 162 on the side wall of the second through hole 16, the pulling effect of the gas on the knitted cloth 6 is improved.

[0073] The implementation principle of a knitted fabric weaving device based on negative pressure technology in the embodiment of the present application is as follows: Reference Fig.11 and Fig.13 By setting an acceleration component 52 in the straight section 511 of the air delivery housing 51, the acceleration component 52 draws in the outside air and the gas in the straight section 511, thereby accelerating the gas in the flow channel 53, so that the gas has a higher flow rate in the throat section 513. In this embodiment, the direction of the arrow in the flow channel 53 represents the flow direction of the gas; the number of arrows represents the flow speed of the gas.

[0074] Reference Fig.13 and Fig.14 Since the throat section 513 of the flow channel 53 is connected to the second through hole 16 of the working platform 11, when the gas flows in the flow channel 53, the gas exerts a force on the knitted cloth 6, and the force is perpendicular to the length direction of the knitted cloth 6, so that the knitted cloth 6 has a tendency to move to both sides. Therefore, when the knitted cloth 6 still has wrinkles, overlaps, etc., the flowing gas will pull the knitted cloth 6 to further flatten the knitted cloth 6, and further improve the flatness of the knitted cloth 6 during the transportation process.

[0075] Reference Fig.13The air supply unit 515 is divided into a straight section 511, a closing section 512, a throat section 513 and a flared section 514, so that when the gas flows in the flow channel 53, the gas will flow faster after passing through the closing section 512, so that the gas has a larger flow rate in the throat section 513, further improving the pulling effect of the airflow on the knitted cloth 6.

[0076] In addition, in this embodiment, the power of the acceleration component 52 increases gradually along the gas flow direction, so that the acceleration component 52 close to the outside of the knitted cloth 6 can obtain more gas; thereby, the gas close to the periphery of the knitted cloth 6 has a greater flow rate, so as to increase the traction effect of the gas on the edge area of ​​the knitted cloth 6 and improve the flatness of the knitted cloth 6.

[0077] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A knitting fabric weaving device based on negative pressure technology, characterized in that: The invention comprises a frame (1), a guide mechanism (2), a negative pressure mechanism (3) and a first smoothing mechanism (4); the frame (1) is provided with a horizontal working platform (11), a knitted fabric (6) is attached to the working platform (11), and arc chamfers are provided on both sides of the working platform (11) along the conveying direction of the knitted fabric (6); along the conveying direction of the knitted fabric (6), the guide mechanism (2) comprises a first guide roller (21) and a second guide roller (22) in sequence, the first guide roller (21) and the second guide roller (22) are arranged on the frame (1) on both sides of the working platform (11), and the bottom elevations of the first guide roller (21) and the second guide roller (22) are lower than the elevation of the working platform (11); along the conveying direction of the knitted fabric (6), the negative pressure mechanism (3) are arranged at intervals, the negative pressure mechanism (3) is arranged at the bottom of the working platform (11), and the working platform (11) is provided with a plurality of first through holes (15), the first through holes (15) are connected to the negative pressure mechanism (3), and the negative pressure mechanism (3) is used to extract the air between the knitted fabric (6) and the working platform (11) to force the knitted fabric (6) to fit the working platform (11); the first smoothing mechanism (4) is fixed on the frame (1), and the first smoothing mechanism (4) is arranged on the material incoming side of the working platform (11), a gap is provided between the first smoothing mechanism (4) and the working platform (11) for the single layer of the knitted fabric (6) to pass through, and the first smoothing mechanism (4) is used to flatten the knitted fabric (6).

2. The knitting fabric weaving device based on negative pressure technology according to claim 1, characterized in that: The first smoothing mechanism (4) comprises a fixing member (41), an abutting member (42), a spring member (43), a connecting bolt (44) and a connecting nut (45); the fixing member (41) is fixedly mounted on the frame (1); the abutting member (42) is arranged on a side of the fixing member (41) close to the working platform (11); the connecting bolt (44) is fixedly connected to the abutting member (42); the fixing member (41) is provided with a mounting hole for the connecting bolt (44) to pass through; the connecting nut (45) is connected to the connecting bolt (44); the spring member (43) is sleeved on the outer periphery of the connecting bolt (44), and the spring member (43) is arranged between the fixing member (41) and the abutting member (42).

3. The knitting fabric weaving device based on negative pressure technology according to claim 2, characterized in that: The abutment member (42) is an arc-shaped structure, and the opening direction of the abutment member (42) is arranged toward the second guide roller (22); the knitted fabric (6) is inserted into the gap between the abutment member (42) and the working platform (11).

4. The knitting fabric weaving device based on negative pressure technology according to claim 1, characterized in that: The negative pressure mechanism (3) comprises a vacuum machine (31), an exhaust main pipe (32) and an exhaust pipe network (33); the exhaust pipe network (33) is fixedly mounted on the frame (1), and the exhaust pipe network (33) is connected to the first through hole (15); one end of the exhaust main pipe is connected to the exhaust pipe network (33), and the other end of the exhaust main pipe (32) is connected to the vacuum machine (31).

5. The knitting fabric weaving device based on negative pressure technology according to claim 1, characterized in that: The invention also comprises a second smoothing mechanism (5), wherein at least one second smoothing mechanism (5) is provided, the second smoothing mechanism (5) is provided between adjacent negative pressure mechanisms (3), and the second smoothing mechanism (5) is fixedly provided at the bottom of the working platform (11); a flow channel (53) for gas flow is provided inside the second smoothing mechanism (5), the direction of the flow channel (53) is provided perpendicular to the conveying direction of the knitted fabric (6), and the gas flows from the middle to the outside of the working platform (11); the working platform (11) is provided with a second through hole (16), the second through hole (16) is connected to the flow channel (53), the second through hole (16) is a long strip through hole, and the length direction of the second through hole (16) is perpendicular to the conveying direction of the knitted fabric (6).

6. The knitting fabric weaving device based on negative pressure technology according to claim 5, characterized in that: The second smoothing mechanism (5) comprises an air supply shell (51), the cross-section of the air supply shell (51) is a groove-shaped structure, the air supply shell (51) is fixedly connected to the working platform (11), and the air supply shell (51) and the working platform (11) are arranged around the flow channel (53); the air supply shell (51) is provided with an air inlet (5111), and the air inlet (5111) is used to transport gas into the flow channel (53).

7. The knitting fabric weaving device based on negative pressure technology according to claim 6, characterized in that: Along the gas flow direction, the gas supply housing (51) is divided into a plurality of gas supply units (515), and the gas supply units (515) sequentially include a straight section (511), a closing section (512), a throat section (513), and a flared section (514); along the gas flow direction, the size of the closing section (512) decreases, and the size of the flared section (514) increases; the size of the end of the straight section (511) is equal to the maximum size of the closing section (512), and the size of the throat section (513) is equal to the minimum size of the closing section (512) and the flared section (514); the flow channel (53) of the throat section (513) is connected to the second through hole (16).

8. The knitting fabric weaving device based on negative pressure technology according to claim 7, characterized in that: The second smoothing mechanism (5) further comprises an acceleration component (52), wherein the acceleration component (52) is arranged in the straight section (511); the acceleration component (52) comprises a rotor (521), a synchronous gear set (524) and a driving member (522); the rotor (521) is arranged in the flow channel (53), and the rotor (521) is rotationally connected to the air supply housing (51), two rotors (521) are provided, and blades are provided on the outer periphery of the rotor (521), and there is a phase difference between the blades of the two rotors (521); the rotating shafts of the two rotors (521) are connected through the synchronous gear set (524) to realize the synchronous rotation of the two rotors (521), and the rotation directions of the two rotors (521) are opposite; the driving member (522) is connected to one of the rotors (521), and the driving member (522) is used to drive the two rotors (521) to rotate, so that the two rotors (521) accelerate the gas flow in the flow channel (53).

9. The knitting fabric weaving device based on negative pressure technology according to claim 8, characterized in that: At least two accelerating components (52) are provided, and along the gas flow direction, the power of the accelerating components (52) increases gradually, so that the gas flow rate in the flow channel (53) increases.

10. The knitted fabric weaving device based on negative pressure technology according to claim 5, characterized in that: Along the gas flow direction, the second through hole (16) has a first guide surface (161) and a second guide surface (162) on both sides, and the gas flows through the first guide surface (161) and the second guide surface (162) in sequence; along the vertical upward direction, the distance from the first guide surface (161) to the upper surface of the working platform (11) decreases, and the distance from the second guide surface (162) to the upper surface of the working platform (11) increases.

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