Rotary weft insertion device of warp knitting machine

Abstract

The invention belongs to the technical field of warp knitting machines, and particularly relates to a rotary weft insertion device of a warp knitting machine, which comprises a rotary creel and a rotary guide bar, the rotary creel comprises a creel rotary track, a plurality of frame bodies, a creel power mechanism and a lifting appliance; the rotary guide bar comprises a needle seat, a plurality of needle blocks and a guide bar power mechanism; the needle blocks do rotary motion along the guide bar rotary track; through rotation of the guide bars and rotation of the matched creel and the threading plate, the rotary guide bars form a left group of guide bars and a right group of guide bars, all the guide needles synchronously move one or more needles in the width direction every time the looping area reciprocates once or several times, and all the needles continuously and synchronously rotate and reciprocate, so that the looping efficiency is improved. Each yarn can be transversely moved according to the width of the fabric and is not limited by the number of transversely-moving needles, the rotating needle block is equivalent to synchronous work of two guide bars, the two formed guide bars achieve mutual intersection of coils and do not damage the fabric yarn, the strength of the fabric is greatly improved, and the performance of the fabric is more stable and reliable.

Description

Technical Field

[0001] This invention belongs to the field of warp knitting machine technology, specifically relating to a rotating weft insertion device for a warp knitting machine. Background Technology

[0002] In existing technology, the lateral movement of the guide bar is linear. It is powered by an electric cylinder, a actuator, and a pattern disc cam, and utilizes auxiliary structures such as linear bearings and struts to drive the guide needles mounted on the guide bar to achieve linear movement. This, combined with the grooved needles, enables the knitting loop formation. Due to the limitations of the hanger shaft and the stroke of the electric cylinder, the needle block can only achieve a relatively small number of lateral needle movements, and the number of lateral needle movements is limited. For a detailed partial schematic diagram of the yarn path in the guide bar, please refer to... Figure 28 This results in low fabric strength. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: in order to solve the problem that the needle block can only achieve a relatively small number of transverse needles due to the limitation of the small shaft of the hanger and the stroke of the electric cylinder in the existing technology, resulting in low fabric strength, the present invention provides a rotating weft insertion device for a warp knitting machine.

[0004] The technical solution adopted by this invention to solve its technical problem is: a warp knitting machine rotating weft insertion device, comprising: A rotating yarn frame includes a yarn frame rotation track, multiple frames that move along the yarn frame rotation track, a yarn frame power mechanism for driving the frames to move, and a lifting device connected between the frames and the output end of the yarn frame power mechanism to achieve quick assembly and disassembly of the frames. The rotating comb includes a needle holder with a comb rotation track, a plurality of needle blocks that rotate along the comb rotation track, and a comb power mechanism for driving the movement of the needle blocks. The comb rotation track includes two side rails extending along the length of the needle holder.

[0005] Furthermore, the combing power mechanism has two sets located at both ends of the needle holder. Each set of combing power mechanism includes a translation drive unit for pushing the needle block to move along the side rail and a switching unit for grabbing the needle block that has moved to the end of one side rail and rotating it to switch to the other side rail.

[0006] Furthermore, the switching unit includes a clamping mechanism for clamping the needle block, a push-pull mechanism for pushing the clamping mechanism and the clamped needle block out of or into the side rail, and a rotating mechanism for reversing the rotation of the clamping mechanism and the clamped needle block.

[0007] Furthermore, the clamping mechanism includes a clamping cylinder and two chucks connected to the output end of the clamping cylinder for clamping the needle block.

[0008] Furthermore, the rotating mechanism includes a rotary motor and a rotating shaft connected to the output end of the rotary motor, and the clamping cylinder is mounted on the rotating shaft.

[0009] Furthermore, the push-pull mechanism includes a push-pull cylinder mounted on the needle seat, and the output end of the push-pull cylinder is connected to a base for mounting the rotary motor.

[0010] Furthermore, the rotating yarn frame also includes a guide rail located at the bottom of the frame for guiding the movement of the frame, and rollers that cooperate with the guide rail are installed on the frame.

[0011] Furthermore, the lifting device includes a lifting rod and a hook hinged to the lifting rod and used to engage with a lifting ring at the top of the frame.

[0012] Furthermore, the comb power mechanism includes a rotary drive, a drive shaft connected to the output end of the rotary drive, a driven shaft, and a first annular conveying structure wound around the drive shaft and the driven shaft. The needle block is mounted on the first annular conveying structure, and the first annular conveying structure rotates along the comb rotation track.

[0013] Furthermore, it also includes a second annular conveying structure surrounding the drive shaft and the driven shaft, and a plurality of threading plates arranged in a ring around the second annular conveying structure and moving synchronously with the second annular conveying structure; And / or may also include a plurality of toggle springs that are wound around the third annular conveying structure on the drive shaft and the driven shaft, arranged in a ring on the third annular conveying structure and moving synchronously with the third annular conveying structure.

[0014] The beneficial effects of this invention are as follows: This invention utilizes the rotation of a comb bar, along with the rotation of a matching yarn frame and threading plate. The rotating comb bar forms two sets of comb bars on the left and right sides. Every time the looping area reciprocates once or several times, all the guide needles move one or several needles synchronously along the fabric width. The continuous synchronous rotation and reciprocating motion of all needles allows each yarn to move as wide as the fabric width allows, no longer limited by the number of needles moved laterally. The rotating needle block is equivalent to two comb bars working synchronously. The two comb bars formed achieve the mutual crossing of loops without damaging the fabric yarn, greatly improving the strength of the fabric and making the fabric performance more stable and reliable.

[0015] Other features and advantages of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a three-dimensional schematic diagram of Embodiment 1 of the present invention; Figure 2 This is a front view of Embodiment 1 of the present invention; Figure 3 This is a top view of Embodiment 1 of the present invention; Figure 4 This is a side view of Embodiment 1 of the present invention; Figure 5 This is a three-dimensional schematic diagram of the rotating yarn frame in this invention; Figure 6 This is a front view of the rotating yarn frame in this invention; Figure 7 This is a three-dimensional schematic diagram of the cooperation between the frame and the lifting device in this invention; Figure 8 yes Figure 7 A magnified view of part A in the middle; Figure 9 This is a front view of the frame and lifting device in this invention. Figure 10 This is a schematic diagram of the lifting device in this invention; Figure 11 This is a schematic diagram of the power mechanism in this invention; Figure 12 This is a three-dimensional schematic diagram of the rotating comb in Embodiment 1 (translation drive unit not shown); Figure 13 This is a front view of the rotating comb in Embodiment 1 (translation drive unit not shown); Figure 14 This is a side view of the rotating comb in Embodiment 1 (translation drive unit not shown). Figure 15 This is a schematic diagram of the interaction between a single needle block and the switching unit in Embodiment 1; Figure 16 This is a schematic diagram of the engagement between the clamp and the needle block in Embodiment 1; Figure 17 This is a schematic diagram of the structure of the translation drive unit driving the needle block to translate along the first side rail in Embodiment 1; Figure 18 This is a schematic diagram of the structure in Embodiment 1 where the translation drive unit pushes the needle block out of the first side rail and the clamping mechanism clamps the needle block. Figure 19 This is a schematic diagram of the structure of Embodiment 1, in which the push-pull mechanism pushes the clamping mechanism and its pin block out of the first side rail, and the rotating mechanism rotates it. Figure 20 This is a schematic diagram of the push-pull mechanism in Embodiment 1 pulling the rotated needle block into the second side rail; Figure 21 This is a schematic diagram of the structure of the translation drive unit driving the needle block to translate along the second side rail in Embodiment 1; Figure 22This is a schematic diagram of the rotating comb structure in Example 2; Figure 23 yes Figure 22 A magnified view of part B in the middle section; Figure 24 This is a schematic diagram of the base structure in Embodiment 2; Figure 25 yes Figure 24 A magnified view of part C in the middle; Figure 26 yes Figure 24 A magnified view of part D in the middle; Figure 27 This is a diagram showing the movement trajectory of the needle block in Example 2; Figure 28 This is a partial schematic diagram of the yarn routing in existing technology; Figure 29 This is a partial schematic diagram of the yarn routing in this invention.

[0018] In the picture: 1. Rotating yarn frame; 101. Yarn frame rotary track; 102. Frame body; 1021. Lifting ring; 103. Yarn frame power mechanism; 1031. Rotation power source; 1032. Drive sprocket assembly; 1033. Driven sprocket assembly; 1033a. Traveling wheel; 1033b. Guide wheel; 104. Lifting device; 1041. Lifting rod; 1041a. Support arm; 1042. Lifting hook; 1043. Pin; 1044. Limiting part; 105. Guide rail; 106. Roller; 107. Limiting ring; 2. Rotating guide bar; 201. Needle holder; 2011. Guide bar rotary track; 2011a. First side rail; 2011b. Second side rail; 202. Needle block; 2021. Yarn guide needle; 2022. Insertion part; 203. Translation drive unit; 204. Clamping mechanism; 2041. Clamping cylinder; 2042. Chuck; 205. Push-pull mechanism; 206. Rotation mechanism; 2061. Rotary motor; 2062. Rotating shaft; 2063. 207. Base; 208. Auxiliary unit; 209. Rotary drive component; 210. Drive shaft; 211. Driven shaft; 212. First annular conveying structure; 213. Second annular conveying structure; 214. Third annular conveying structure; 215. Upper angle iron; 216. Lower angle iron; 217. Mounting base; 218. Upper drive guide seat; 219. Upper driven guide seat; 220. Lower driven guide seat; 221. Mounting plate; 3. Threading plate; 4. Head spring; 5. Base; 501. Support column; 502. Crossbeam; 503. Crane arm; 6. Yarn; D1, groove needle pitch; D2, guide needle lateral movement distance; Detailed Implementation

[0019] The invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention in a schematic manner. Therefore, they only show the components relevant to the invention. Orientations and references (e.g., up, down, left, right, etc.) are only used to aid in the description of the features in the drawings. Therefore, the following specific embodiments are not intended to be restrictive, and the scope of the claimed subject matter is defined solely by the appended claims and their equivalents. Example

[0020] like Figures 1-21 As shown, a warp knitting machine rotating weft insertion device includes a base 5, a rotating yarn frame 1 and a rotating guide bar 2 mounted on the base 5; The rotating yarn frame 1 includes a yarn frame rotation track 101 fixed on the base 5, multiple frames 102 moving along the yarn frame rotation track 101, a yarn frame power mechanism 103 for driving the frame 102, and a hanger 104 connected between the frame 102 and the output end of the yarn frame power mechanism 103 to achieve quick assembly and disassembly of the frame 102. The yarn frame rotation track 101 has an elongated oval structure, including two straight segments and two curved segments. The hanger 104 can achieve quick assembly and disassembly of the yarn frame while reducing stress and increasing the service life of the rotating yarn frame 1.

[0021] The yarn frame power mechanism 103 includes a rotary power source 1031, a drive sprocket assembly 1032 that is connected to the rotary power source 1031, and a driven sprocket assembly 1033 that cooperates with the drive sprocket assembly 1032 and is located in the yarn frame rotary track 101. The drive sprocket assembly 1032 includes multiple chain links, a connecting block connecting two adjacent chain links, a drive wheel and a driven wheel that drive the chain links to move. The connecting block is provided with teeth for inserting the driven sprocket assembly 1033 to drive the driven sprocket assembly 1033 to move synchronously. The top of the yarn frame rotary track 101 is provided with an upper slot for the drive sprocket assembly 1032 to extend into, and the bottom is provided with a lower slot for the hanger 104 to extend out. The rotary power source 1031 can be a servo motor. The servo motor is connected to the drive pulley via a chain assembly or a synchronous belt assembly to drive the drive sprocket assembly 1032 to rotate. In this embodiment, it is a synchronous belt assembly, which includes a drive pulley, a driven pulley, and a synchronous belt wound around the drive pulley and the driven pulley connected to the output end of the servo motor. The driven pulley is coaxially fixed with the drive pulley of the drive sprocket assembly 1032. The drive sprocket assembly 1032 drives the driven sprocket assembly 1033 to rotate synchronously. The driven sprocket assembly 1033 drives multiple frames 102 to rotate along the yarn frame rotary track 101 via the hanger 104, so that it can move synchronously with the annular rotating comb bar 2 to perform synchronous yarn feeding and improve the stability of yarn feeding.

[0022] The rotating yarn frame 1 also includes a guide rail 105 located at the bottom of the frame 102 for guiding the movement of the frame 102, and the yarn frame is equipped with rollers 106 that cooperate with the guide rail 105. The roller 106 is mounted on the frame 102 via a bracket and rolls along the guide rail 105. The guide rail 105 is also annular and has an angular cross-section. The frame 102 extends longitudinally. The yarn frame rotation track 101 is located at the top of the frame 102, and the guide rail 105 is located at the bottom of the frame 102. The yarn frame rotation track 101 and the guide rail 105 are located at the two ends of the longitudinal direction of the frame 102, which can ensure that the frame 102 rotates along the predetermined track and avoid the yarn frame from shaking due to excessive tension of the yarn 6.

[0023] The lifting device 104 includes a lifting rod 1041 and a hook 1042 that is hinged to the lifting rod 1041 and is used to cooperate with a lifting ring 1021 at the top of the frame 102. The hook portion of the hook 1042 passes through the lifting ring 1021, and one end of the lifting device 104 away from the hook 1042 is connected to the driven sprocket assembly 1033. The middle part of the hook 1042 protrudes radially to form a limiting part 1044. A limiting ring 107 is provided between the rod 1041 and the limiting part 1044, and the rod 1041 and the limiting part 1044 limit the limiting ring 107 between them. The cross-section of the limiting part 1044 can be circular, square or other regular or irregular shapes, which only need to satisfy the requirement of limiting the downward movement of the limiting ring 107. The limiting ring 107 is annular and has multiple through holes for the rod 1041 to pass through. The limiting ring 107 can be used to connect multiple yarn frames corresponding to the lifting devices 104 in series to reduce the sway caused by the lifting devices 104.

[0024] The driven sprocket assembly 1033 includes staggered traveling wheels 1033a and guide wheels 1033b, with their axes perpendicular to each other. The axis of the traveling wheel 1033a extends horizontally, and the axis of the guide wheel 1033b extends vertically. The traveling wheels 1033a are arranged in pairs, and an axle connects the two traveling wheels 1033a.

[0025] The top of the boom 1041 is bent to form two arms 1041a. The tops of the two arms 1041a are fitted onto the axle of the traveling wheel 1033a, forming a double-layer fit, which can improve the structural strength of the boom 1041 and the axle. The bottom ends of the two arms 1041a are connected to pins 1043 for the hook 1042 to be fitted. The top of the hook 1042 has a fitting part for fitting onto the outside of the pin 1043.

[0026] The two support arms 1041a are bent in the middle in a direction away from each other, so that the bottom ends of the two support arms 1041a expand to leave enough space for the installation of the sleeve part of the hook 1042. The longer sleeve part can further improve the structural strength of the connection between the rod 1041 and the hook 1042.

[0027] The rotating comb 2 includes a needle seat 201 forming a comb rotation track 2011, a plurality of needle blocks 202 rotating along the comb rotation track 2011, and a comb power mechanism for driving the movement of the needle blocks 202. The needle seat 201 is elongated. The comb rotation track 2011 includes two side rails extending along the length of the needle seat 201. The two side rails are both straight tracks and parallel to each other. The needle blocks 202 in the two side rails move in opposite directions. Each needle block 202 is equipped with a plurality of yarn guide needles 2021.

[0028] The combing power mechanism has two sets, located at both ends of the needle holder 201. Each set of the combing power mechanism includes a translation drive unit 203 for pushing the needle block 202 to move along the side rail, a switching unit for grabbing the needle block 202 that has moved to the end of one side rail and rotating it to switch to the other side rail, and an auxiliary unit 207 that is arranged opposite to the translation drive unit 203 to assist in positioning the needle block 202 during its movement on the side rail. The translation drive unit 203 and the auxiliary unit 207 are respectively distributed... At the head and tail, the needle blocks 202 at the tail are supported by the translation drive unit 203 pushing the needle blocks 202, so as to avoid the translation drive unit 203 applying too much force, which would cause inaccurate or unstable lateral movement. Multiple needle blocks 202 on each side rail are densely arranged. During the push of the translation drive unit 203, the previous needle block 202 can be pushed forward by the next needle block 202 and enter the position where the previous needle block 202 was before. The translation switching unit and the auxiliary unit 207 can be, but are not limited to, cylinders, electric cylinders or telescopic rods. The two side rails are a first side rail 2011a and a second side rail 2011b, and multiple needle blocks 202 are distributed on the first side rail 2011a and the second side rail 2011b. Two combing power mechanisms are a first combing power mechanism and a second combing power mechanism. The first combing power mechanism includes a first translation drive unit for pushing the needle blocks 202 on the first side rail 2011a to translate, and a unit for rotating and switching the needle blocks 202 that have moved to the end of the first side rail 2011a to the second side rail 2011b. The first switching unit and the first auxiliary unit, which are arranged opposite to the first translation drive unit 203 to assist in positioning the needle block 202 during the movement of the needle block 202 on the first side rail 2011a, are respectively distributed at the head and tail of the machine. They are used to support the tail needle block 202 when the first translation drive unit pushes the needle block 202, so as to prevent the first translation drive unit from applying too much force, which would cause inaccurate or unstable lateral movement. The second comb power mechanism includes a second translation drive unit for pushing the needle block 202 on the second side rail 2011b to translate, a second switching unit for rotating and switching the needle block 202 moved to the end of the second side rail 2011b to the first side rail 2011a, and a second auxiliary unit arranged opposite to the second translation drive unit 203 to assist in positioning the needle block 202 during the movement of the needle block 202 on the first side rail 2011a. That is, the second translation drive unit and the second auxiliary unit in the second comb power mechanism are respectively distributed at the head and tail of the machine, and are used to support the tail needle block 202 when the second translation drive unit pushes the needle block 202, so as to prevent the second translation drive unit from applying too much force, resulting in inaccurate or unstable lateral movement. Since the first side rail 2011a and the second side rail 2011b are arranged in parallel, the rotation angle of the needle block 202 is 180°.

[0029] First, the needle block 202 on the first side rail 2011a moves along the first direction under the push of the first translation drive unit, and the first auxiliary unit supports the needle block 202 on the first side rail 2011a. The needle block 202 on the second side rail 2011b moves along the second direction under the push of the second translation drive unit, and the second auxiliary unit supports the needle block 202 on the second side rail 2011b. The first direction is opposite to the second direction. When the needle block 202 is moved to the end of the first side rail 2011a (i.e., the tail of the warp knitting machine) by the push of the first translation drive unit, the second switching unit grabs the needle block 202, rotates it 180°, and pushes it into the second side rail 2011b. When the needle block 202 is moved to the end of the second side rail 2011b (i.e., the head of the warp knitting machine) by the push of the second translation drive unit, the first switching unit grabs the needle block 202, rotates it, and pushes it into the first side rail 2011a. The first switching unit and the second switching unit, distributed at both ends of the needle holder 201, connect the first side rail 2011a and the second side rail 2011b. The side rails 2011b are connected end to end to form a circular track. Multiple needle blocks 202 continuously move laterally along the circular track to form a rotary reciprocating motion. Every time the looping area reciprocates once or several times, all the guide needles 2021 move one or several needles synchronously along the width direction. Each yarn 6 can move laterally as wide as the width, without being limited by the number of needles moved laterally. The guide bars rotating along the circular track form two sets of guide bars on the left and right. The two sets of guide bars work synchronously, realizing the mutual crossing of loops without damaging the fabric yarns 6, which greatly improves the strength of the fabric and makes the fabric performance more stable and reliable.

[0030] The switching unit includes a clamping mechanism 204 for clamping the needle block 202, a push-pull mechanism 205 for pushing the clamping mechanism 204 and the clamped needle block 202 out of or into the side rail, and a rotating mechanism 206 for reversing the rotation of the clamping mechanism 204 and the clamped needle block 202.

[0031] Taking the first switching unit as an example, when the first translation drive unit pushes the needle block 202 to the end of the first side rail 2011a, the needle block 202 partially extends out of the first side rail 2011a. The clamping mechanism 204 clamps the needle block 202, and the push-pull mechanism 205 pushes the needle block 202 out of the first side rail 2011a. Then, the rotation mechanism 206 rotates the needle block 202 180° to align it with the second side rail 2011b. Then, the push-pull mechanism 205 resets and drives the needle block 202 to return to its original position. The needle block 202 enters the second side rail 2011b, and then the clamping mechanism 204 releases the needle block 202 and rotates it 180° under the drive of the rotating mechanism 206 to return to the first side rail 2011a to prepare for the next needle block 202. The needle block 202 that enters the second side rail 2011b is pushed by the second translation drive unit and moves to the end of the second side rail 2011b. When it moves to the end of the second side rail 2011b, the above process is repeated to switch the needle block 2022 to the first side rail 2011a.

[0032] The clamping mechanism 204 includes a clamping cylinder 2041 and two chucks 2042 connected to the output end of the clamping cylinder 2041 and used to clamp the needle block 202. When the needle block 202 extends out of the side rail, the two chucks 2042 clamp the needle block 202.

[0033] The needle block 202 has a protruding part 2022 on the side near the needle seat 201 for embedding into the side rail and restricting the needle block 202 from dislodging from the needle seat 2011 along the width direction of the needle seat 201. The shape of the side rail matches the shape of the embedding part 2022. After the embedding part 2022 is embedded into the side rail, it can move along the length direction of the needle seat 201 but will not dislodge along the width direction of the needle seat 201. Each needle block 202 has two inserts 2022. The two inserts 2022 gradually move closer together in the direction away from the needle block 202 to form a dovetail structure. Each side rail has two slides. The two slides correspond one-to-one with the two inserts 2022, and each insert 2022 is embedded in its corresponding slide. Each clamp 2042 includes a base and a clamping body protruding from the base. The two clamping bodies of the two clamps 2042 gradually move away from the base. A slot is formed between each base and its corresponding clamping body for the needle block 202 inserting part 2022 to be inserted. The two slots correspond one-to-one with the two inserting parts 2022, and each inserting part 2022 is inserted into its corresponding slot. The two clamping bodies are located inside the two inserting parts 2022. The rotating mechanism 206 includes a rotary motor 2061 and a rotating shaft 2062 connected to the output end of the rotary motor 2061. A coupling is provided between the two. The clamping cylinder 2041 is mounted on the rotating shaft 2062 through a cylinder seat. When the rotary motor 2061 drives the rotating shaft 2062 to rotate, the clamping cylinder 2041 and the needle block 202 it clamps rotate synchronously. After the rotary motor 2061 and the rotating shaft 2062 are installed, the rotation axis 2062 line of the rotating shaft 2062 is located at the center of the line connecting the two side rails, ensuring that the clamping cylinder 2041 can align the needle block 202 it clamps with the two side rails after rotating. The push-pull mechanism 205 includes a push-pull cylinder mounted on the needle holder 201. The output end of the push-pull cylinder is connected to the base 2063 for mounting the rotary motor 2061. The rotating shaft 2062 passes through the base 2063 and a bearing is installed between the rotating shaft 2062 and the base 2063. After the push-pull cylinder is started, it can drive the rotary motor 2061, the clamping cylinder 2041 and the needle block 202 on it to move synchronously, so as to push the needle block 202 out of the side rail or pull it into the side rail. The needle holder 201 is equipped with a slide rail on its top, and the base 2063 is equipped with a slider that cooperates with the slide rail on its bottom. The cooperation between the slide rail and the slider can guide the movement direction of the rotary motor 2061.

[0034] Working principle: First, the needle block 202 on the first side rail 2011a moves along the first direction under the push of the first translation drive unit. The first auxiliary unit supports the needle block 202 on the first side rail 2011a. The needle block 202 on the second side rail 2011b moves along the second direction under the push of the second translation drive unit. The first direction is opposite to the second direction. Taking the first switching unit as an example, such as Figure 17 and 18 As shown, when the needle block 202 is pushed by the first translation drive unit 203 to the end of the first side rail 2011a (i.e., the tail of the warp knitting machine), the needle block 202 partially extends out of the first side rail 2011a. The clamping cylinder 2041 in the second switching unit is activated, and the two clamps 2042 open to clamp the needle block 202. Then, the push-pull cylinder pushes the needle block 202 out of the first side rail 2011a, at which point the needle block 202 is completely separated from the first side rail 2011a. Then, the rotary motor 2061 drives the needle block 202 to rotate 180°, aligning it with the second side rail 2011b. The push-pull cylinder then resets, pulling the needle block 202 into the second side rail 2011b (as shown). Figure 19 and 20 As shown), the clamping cylinder's chuck 2042 retracts, releasing the needle block 202, and rotates 180° under the drive of the rotating mechanism 206, returning to the first side rail 2011a to prepare for the next needle block 202. At this time, the needle block 202 entering the second side rail 2011b is translated under the push of the second translation drive unit (as shown). Figure 21 As shown, when it is moved to the end of the second side rail 2011b, which is the head of the warp knitting machine, the first switching unit repeats the above operation to rotate and switch the needle block 202 to the first side rail 2011a. During the process, the first switching unit and the second switching unit distributed at both ends of the needle seat 201 connect the first side rail 2011a and the second side rail 2011b end to end to form a circular track. Example

[0035] The difference between Example 2 and Example 1 is as follows: Figures 22-26 As shown, the combing power mechanism includes a rotary drive 208, a drive shaft 209 connected to the output end of the rotary drive 208, a driven shaft 210, and a first annular conveying structure 211 wound around the drive shaft 209 and the driven shaft 210. The needle blocks 202 are mounted on the first annular conveying structure 211, and the first annular conveying structure 211 rotates along the combing rotary track 2011. The first annular conveying structure 211 can be, but is not limited to, a conveyor chain structure, a steel belt structure, or a synchronous belt structure, etc. Preferably, in this embodiment, it is a conveyor chain structure, and a three-row chain structure, which can improve the conveying accuracy. The rotary drive 208 can be a motor, and a coupling is provided between the output end of the motor and the drive shaft 209. Each needle block 202 is equipped with multiple guide needles 2021, and its operating trajectory diagram is shown in the figure. Figure 27To make the presentation clear and easy to understand, Figure 27 The needle block 202 in the image is laid out horizontally, while the needle block 202 in the actual image is arranged vertically. It also includes a second annular conveying structure 212 wound around the drive shaft 209 and the driven shaft 210, and a plurality of threading plates 3 arranged in a ring on the second annular conveying structure 212 and moving synchronously with the second annular conveying structure 212. The second annular conveying structure 212 may be, but is not limited to, a conveyor chain structure, a steel belt structure or a synchronous belt structure, etc. The threading plates 3 are located above the needle block 202. And / or also includes a third annular conveying structure 213 wound around the drive shaft 209 and driven shaft 210, and a plurality of lead springs 4 arranged in a ring on the third annular conveying structure 213 and moving synchronously with the third annular conveying structure 213. The lead springs 4 are used to adjust the tension of the yarn 6. The third annular conveying structure 213 can be, but is not limited to, a conveyor chain structure, a steel belt structure, or a synchronous belt structure, etc. Preferably, the second annular conveying structure 212 and the third annular conveying structure 213 are also conveyor chain structures, and are double-row chains. Compared with the conveying of the needle block 202, the conveying accuracy of the threading plate 3 and the lead springs 4 is lower. Different levels of conveying structures can be set according to different conveying objects, thereby reducing the overall cost. The yarn 6 is unwound from the yarn bobbin on the yarn frame, and after passing through the tensioner, it enters the threading plate 3. Then, the yarn 6 exits from the threading plate 3 and enters the lead springs 4. The lead springs 4 are used to adjust the tension of the yarn 6. In this embodiment, the needle block 202, the threading plate 3, and the picking spring 4 are all driven by the same driving source (i.e., the rotation driving component 208). In the first embodiment, the rotation driving source of the threading plate 3 and the picking spring 4 is different from that of the needle block 202, and the threading plate 3 and the picking spring 4 can also adopt the structural form of this embodiment.

[0036] The drive shaft passes through the first annular conveyor structure 211, the second annular conveyor structure 212, and the third annular conveyor structure 213 and is connected to the drive wheels of these three structures. The driven shaft 210 also passes through the first annular conveyor structure 211, the second annular conveyor structure 212, and the third annular conveyor structure 213 and is connected to the driven wheels of these three structures. The motor drives the drive shaft 209 to rotate. The drive shaft 209 cooperates with the drive wheels of the first annular conveyor structure 211, the second annular conveyor structure 212, and the third annular conveyor structure 213, and the driven shaft 210 cooperates with the driven wheels of the first annular conveyor structure 211, the second annular conveyor structure 212, and the third annular conveyor structure 213, thereby driving the first annular conveyor structure 211, the second annular conveyor structure 212, and the third annular conveyor structure 213 to rotate synchronously.

[0037] The first annular conveying structure 211, the second annular conveying structure 212 and the third annular conveying structure 213 are all fixed with upper angle iron 214 and lower angle iron 215 for mounting the parts to be conveyed on them. The upper angle iron 214 and lower angle iron 215 are far apart from each other and are bent in the opposite direction to each other. The number of upper angle irons 214, lower angle irons 215 and needle blocks 202 on the first annular conveying structure 211 are in one-to-one correspondence, and each needle block 202 is installed on its corresponding upper angle iron 214 and lower angle iron 215. The number of upper angle irons 214, lower angle irons 215 and wire threading plates 3 on the second annular conveying structure 212 are one-to-one, and each wire threading plate 3 is installed on its corresponding upper angle iron 214 and lower angle iron 215. The number of upper angle irons 214, lower angle irons 215, and lifting springs 4 on the third annular conveying structure 213 are one-to-one, and each lifting spring 4 is installed on its corresponding upper angle iron 214 and lower angle iron 215.

[0038] Preferably, the base 5 includes a plurality of supporting columns 501, a crossbeam 502 connecting the plurality of supporting columns 501, a plurality of lifting arms 503 fixed below the crossbeam 502, and a needle holder 201 fixed to one end of the lifting arm 503 away from the crossbeam 502. The side of the needle holder 201 forms a comb rotation track 2011 for the first annular conveying structure 211 to operate, and the needle block 202 operates along the comb rotation track 2011. Several booms 503 also have segmented tracks for the operation of the second annular conveying structure 212 and the third annular conveying structure 213, with multiple segmented tracks spaced apart.

[0039] The boom 503 is fixed with a mounting base 216 for mounting the rotary drive component 208, an upper drive guide seat 217 for the drive shaft 209 to pass through and provide guidance thereto, and an upper driven guide seat 218 for the driven shaft 210 to pass through and provide guidance thereto. There are several upper drive guide seats 217 and upper driven guide seats 218, which are distributed sequentially along the longitudinal direction. Bearings are also provided between the upper drive guide seat 217 and the drive shaft 209, and between the upper driven guide seat 218 and the driven shaft 210. The needle seat 201 is fixed with a lower drive guide seat 219 through which the drive shaft 209 passes to provide guidance, and a lower driven guide seat 220 through which the driven shaft 210 passes to provide guidance. Bearings are also installed between the lower drive guide seat 219 and the drive shaft 209 and between the lower drive guide seat 219 and the driven shaft 210.

[0040] An installation plate 221 is provided between the upper angle iron 214 and the lower angle iron 215 of the first annular conveying structure 211 and the needle block 202. A stop for limiting the installation plate 221 is fixed on the needle seat 201. A guide channel for guiding the movement of the installation plate is formed between the needle seat 201 and the stop. The top of the installation plate 221 is bent to form a bent part. A roller 106 or a bearing is installed between the bent part and the stop. The upper angle iron 214 and the lower angle iron 215 are fixed to the installation plate by bolts. A roller 106 or a bearing is also installed between the installation plate 221 and the bolts.

[0041] The motor is started, and the drive shaft 209 rotates, driving the first annular conveyor structure 211, the second annular conveyor structure 212, and the second annular conveyor structure 212 to rotate. This causes the needle block 202, the threading plate 3, and the take-up spring 4 on these structures to rotate synchronously and reciprocate at a uniform speed. The yarn 6 passes sequentially through the yarn frame, the take-up spring 4, and the threading plate 3 into the guide needles 2021 of the needle block 202 to cooperate with the grooved needles to achieve the knitting loop action. Each time the loop-forming area reciprocates once or several times, all the guide needles 2021 move synchronously one or several needles along the width direction (the specific movement depends on the process requirements). Figure 29 As shown, the continuous synchronous reciprocating motion of all the guide needles 2021 allows each yarn 6 to move as wide as the fabric width allows, no longer limited by the number of needles moving laterally. The multiple rotating needle blocks 202 form two combs and work synchronously, achieving the mutual crossing of loops without damaging the fabric yarns 6, greatly improving the strength of the fabric.

[0042] The above description, based on the preferred embodiments of the present invention, provides inspiration. Those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification but must be determined according to the claims.

Claims

1. A rotating weft insertion device for a warp knitting machine, characterized in that: include: The rotating yarn frame (1) includes a yarn frame rotation track (101), a plurality of frames (102) that move along the yarn frame rotation track (101), a yarn frame power mechanism (103) for driving the frames (102) to move, and a lifting device (104) connected between the frames (102) and the output end of the yarn frame power mechanism (103) to realize the quick assembly and disassembly of the frames (102). The rotating comb (2) includes a needle holder (201) forming a comb rotation track (2011), a plurality of needle blocks (202) rotating along the comb rotation track (2011), and a comb power mechanism for driving the needle blocks (202) to move. The comb rotation track (2011) includes two side rails extending along the length direction of the needle holder (201).

2. The warp knitting machine rotating weft insertion device according to claim 1, characterized in that: The comb power mechanism has two sets located at both ends of the needle holder (201). Each set of comb power mechanism includes a translation drive unit (203) for pushing the needle block (202) to move along the side rail and a switching unit for grabbing the needle block (202) that has moved to the end of one side rail and rotating it to switch to the other side rail.

3. The warp knitting machine rotating weft insertion device according to claim 2, characterized in that: The switching unit includes a clamping mechanism (204) for clamping the needle block (202), a push-pull mechanism (205) for pushing the clamping mechanism (204) and the clamped needle block (202) out of or into the side rail, and a rotating mechanism (206) for reversing the rotation of the clamping mechanism (204) and the clamped needle block (202).

4. The warp knitting machine rotating weft insertion device according to claim 3, characterized in that: The clamping mechanism (204) includes a clamping cylinder (2041) and two chucks (2042) connected to the output end of the clamping cylinder (2041) and used to clamp the needle block (202).

5. The warp knitting machine rotating weft insertion device according to claim 4, characterized in that: The rotating mechanism (206) includes a rotary motor (2061) and a rotating shaft (2062) connected to the output end of the rotary motor (2061), and the clamping cylinder (2041) is mounted on the rotating shaft (2062).

6. The warp knitting machine rotating weft insertion device according to claim 4, characterized in that: The push-pull mechanism (205) includes a push-pull cylinder mounted on the needle seat (201), the output end of which is connected to a base (2063) for mounting the rotary motor (2061).

7. The warp knitting machine rotating weft insertion device according to claim 1, characterized in that: The rotating yarn frame (1) also includes a guide rail (105) located at the bottom of the frame (102) for guiding the movement of the frame (102), and a roller (106) cooperating with the guide rail (105) is installed on the frame (102).

8. The warp knitting machine rotating weft insertion device according to claim 1, characterized in that: The lifting device (104) includes a lifting rod (1041) and a hook (1042) hinged to the lifting rod (1041) and used to engage with a lifting ring (1021) at the top of the frame (102).

9. A warp knitting machine rotating weft insertion device according to claim 1, characterized in that: The comb power mechanism includes a rotary drive (208), a drive shaft (209) connected to the output end of the rotary drive (208), a driven shaft (210), and a first annular conveying structure (211) wound around the drive shaft (209) and the driven shaft (210). The needle block (202) is mounted on the first annular conveying structure (211), and the first annular conveying structure (211) operates along the comb rotation track (2011).

10. A warp knitting machine rotating weft insertion device according to claim 9, characterized in that: It also includes a second annular conveying structure (212) wound around the drive shaft (209) and driven shaft (210), and a plurality of threading plates (3) arranged in a ring on the second annular conveying structure (212) and moving synchronously with the second annular conveying structure (212). And / or, it also includes a third annular conveying structure (213) wound around the drive shaft (209) and the driven shaft (210), and a plurality of toggle springs (4) arranged in a ring on the third annular conveying structure (213) and moving synchronously with the third annular conveying structure (213).

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