Methods and mechanisms for turning socks inside out

Abstract

This invention belongs to the field of sock knitting technology, and specifically relates to a method and mechanism for secondary sock turning, which solves the problem of socks not turning inside out after the toe is sewn. The secondary sock turning method includes: S1. A transfer plate connects the sock toe to a transfer seam head; S2. The lower part of the sock enters the lower sock tube; S3. The upper sock tube descends and enters the sock, with its lower end entering the lower sock tube; S4. A thread unwinding plate rises to transfer the sock toe to the transfer seam head; S5. The lower sock tube rises to a preset height; S6. The upper sock tube rises and resets, while the lower sock tube rises simultaneously; S7. A claw passes through a sock clamping groove to fix the sock onto the upper sock tube, and the lower sock tube resets; S8. The transfer seam head is turned inside out and closed, and then sewn shut through a seam head assembly; S9. After sewing, the transfer seam head and seam head assembly reset; S10. The claw resets, the upper sock tube descends and disengages, and the upper sock tube is sucked out by negative pressure, completing the secondary sock turning; S11. The upper sock tube returns to its original height, and the negative pressure stops. This allows the socks to be turned inside out after the toe is sewn.

Description

Technical Field

[0001] This invention belongs to the field of sock knitting technology, and specifically relates to a method and mechanism for secondary sock turning. Background Technology

[0002] The knitting of socks involves knitting the sock body and sewing the toe. After the sock body is knitted, it is transferred from the sock transfer mechanism to the sewing mechanism. The negative pressure of the lower sock tube of the lower sock mechanism "captures" and straightens the sock body. Then, the lower sock tube lifts the sock body, turns the sock body over, and performs the sewing operation.

[0003] Currently, most sock knitting methods and mechanisms turn the sock inside out once and then use corresponding sewing components to sew the toe. However, some methods and mechanisms cannot turn the initial finished sock inside out after sewing. That is, after sewing, the sock can only be output with the inner layer facing outwards. It still needs to go through a second turning process by hand or a corresponding turning mechanism, which reduces processing efficiency. Summary of the Invention

[0004] One of the objectives of this invention is to address the aforementioned problems in the prior art by proposing a method for double-turning socks.

[0005] To achieve this objective of the innovative invention, the following technical solutions can be used:

[0006] A method for turning socks inside out twice includes:

[0007] S1. Move the transfer tray to connect the unsewn toe of the sock to the transfer seam.

[0008] S2. Allow the unsecured portion of the sock body to enter the lower sock tube of the lower sock tube module, and make the sock opening inside the lower sock tube face downwards;

[0009] S3. The upper sock tube of the upper sock module descends, and the lower end of the upper sock tube passes through the unstitched toe of the sock body and enters the sock body, and at least part of it enters the lower sock tube;

[0010] S4. The rising unwinding disc, in conjunction with the transfer disc and transfer seam head, transfers the sock toe to the transfer seam head;

[0011] S5. Lower the upper part of the sock cuff to the preset height;

[0012] S6. The upper sock tube rises and resets, while the lower sock sleeve rises in coordination until the claw can enter the sock clamping relief groove, then the lower sock sleeve stops moving.

[0013] S7. When the claw passes through the sock clamping groove to fix the sock body to the upper sock tube, the lower sock tube descends and resets.

[0014] S8. After the transfer tray is reset, the transfer seam head is turned over and closed, and the seam is sewn through the seam head assembly;

[0015] S9. After suturing is completed, transfer the suture head and suture head assembly and reset them;

[0016] S10. The claw body returns to its original position, the height of the upper sock tube decreases so that the sock body is disengaged from the upper sock tube, and the sock body is sucked upward from the upper sock tube by the negative pressure of the upper sock tube, completing the second sock turning;

[0017] S11. After completing the second sock turning, the height of the sock leg is reset and the negative pressure stops.

[0018] The secondary sock-turning method of the present invention is used to perform a toe-sewing operation after the sock body is knitted, and to output the finished sock with the right side facing out. In step S1, a transfer plate is mounted on a swing arm. After the sock body is knitted, the swing arm rotates, transferring the transfer plate to below the transfer seam head, where it aligns with the seam head. Step S2 mainly uses the negative pressure of the lower sock tube to draw in the sock body and straighten it downwards. Step S4 uses the transfer plate to transfer the threads from the toe to the transfer seam head. The transfer plate can be removed after the sock body transfer is complete. The cooperation between the transfer plate and the transfer seam head is prior art and will not be described in detail. In steps S5 and S6, the upper end of the lower sock tube is higher than the claw body, facilitating effective clamping of the sock body. At this time, part of the sock body is turned over, forming an M-shape, or the sock body can be completely turned over, at least ensuring that the un-sewn end of the sock body is higher than the semi-toothed ring of the transfer seam head, while the claw body can effectively clamp the sock body. Step S7 involves the specific action of the claw clamping the sock body. The claw passes through the sock clamping groove without pressing firmly onto the lower sock tube, facilitating the smooth withdrawal of the lower sock tube. In step S8, the transfer seam toe folds the toe of the sock body into a straight line, facilitating subsequent seam toe sewing. Step S10 involves using negative pressure to suck the sewn sock body out from the upper sock tube, at which point the turned-out sock body is turned over again and returned to its right-side-out position.

[0019] As an optimization, in step S2, the lower sock tube performs negative pressure suction on the socks, and in conjunction with the auxiliary sock-stuffing module, inserts the unfixed portion of the sock into the lower sock tube.

[0020] The lower sock tube performs a reciprocating stretching motion while simultaneously applying negative pressure to the sock, which helps the lower sock tube to adhere to and capture the sock body.

[0021] In the above-described sock-turning method, in step S1, the sock-turning module moves the sock-turning tube below the auxiliary sock-stuffing module by translation. The rolling body of the auxiliary sock-stuffing module descends and rolls into contact with the middle of the sock, causing at least part of the sock to be inserted into the upper end of the sock-turning tube. The sock-turning is completed with the negative pressure of the sock-turning tube, so that the sock opening inside the sock-turning tube faces downward. At this time, the rolling body height is reset and the negative pressure of the sock-turning tube stops. Finally, the sock-turning tube is reset horizontally.

[0022] The lowering module moves towards the sock body and laterally moves the sock body so that it covers the opening of the lowering sock tube, which is beneficial for the sock body to be captured by the lowering sock tube.

[0023] In the above-mentioned sock-turning method, in step S1, before the sock-turning module turns the socks, the height of the sock-turning tube rises so that the upper end is higher than the height of the unwinding reel; at the same time, the height of the sock-turning tube decreases so that the height of the upper end of the sock-turning tube is close to the height of the lower end of the sock-turning tube; after the sock-turning module finishes turning the socks, the height of the sock-turning tube is reset.

[0024] In the above-described method of turning over socks, in step S5, the preset height is at the opening of the half-tooth ring.

[0025] The semi-toothed ring is used to connect the threads of the stocking body and can interlock to fold the top of the stocking body into a straight line, which facilitates subsequent sewing.

[0026] In the above-mentioned sock-turning method, in step S6, the upper end of the lower sock tube is provided with two sock-clamping relief grooves distributed in the circumferential direction. The number of claws and sock-clamping relief grooves are equal and correspond one-to-one. The claws approach the upper sock tube radially through the claw-driven assembly.

[0027] The claws press the socks firmly against the upper sock tube by clamping them together to secure the socks.

[0028] In the above-described method for turning socks inside out, in step S8, the transfer seam head first opens the ring lock, and then engages and flips the half-tooth ring.

[0029] Unlock the ring lock to release the half-tooth ring's restraint. The two half-tooth rings interlock and close together, bringing the two halves of the sock opening to be sewn together into a straight line, facilitating subsequent sewing.

[0030] Another objective of this invention is to address the aforementioned problems in the prior art by proposing a secondary sock-turning mechanism suitable for the above-described secondary sock-turning method.

[0031] To achieve the innovative objectives of this invention, the following technical solutions can be used:

[0032] A secondary sock-turning mechanism includes a transfer seam head, an upper sock-conditioning module above the transfer seam head, an upper sock-conditioning module including an upper frame, an upper sock-conditioning tube vertically arranged on the upper frame, the upper sock-conditioning tube being connected to the upper frame near its upper end via an upper sock-conditioning tube lifting mechanism, N claws distributed along the circumference of the upper sock-conditioning tube at the bottom of the upper frame, where N≥1, the claws being connected to a claw driving assembly capable of driving the claws to approach the upper sock-conditioning tube to prevent the socks from slipping down, and an upper negative pressure connecting assembly at the upper end of the upper sock-conditioning tube;

[0033] Below the transfer seam head is a sock-feeding module. The sock-feeding module is connected to the connecting seat through a horizontal transfer mechanism. The sock-feeding module includes a sock-feeding seat, on which a sock-feeding tube with two through ends is provided. A sock-feeding tube lifting mechanism is provided between the sock-feeding tube and the sock-feeding seat. A lower negative pressure connecting component is provided at the lower end of the sock-feeding tube. A transfer plate is sleeved on the upper end of the sock-feeding tube. The transfer plate is connected to the sock-feeding seat through a transfer plate lifting drive unit. M sock-feeding clearance grooves distributed circumferentially are opened at the upper end of the sock-feeding tube, and M≥1.

[0034] The horizontal transfer mechanism includes a horizontal transfer base connected to the connecting seat, at least one horizontal guide rod on the horizontal transfer base, a horizontal transfer slider on the horizontal guide rod, a horizontal transfer drive assembly between the horizontal transfer slider and the connecting seat, and the horizontal transfer slider connected to the lower sock seat.

[0035] The main body of this secondary sock-turning mechanism consists of a transfer seam head and upper and lower sock-grooming modules respectively located above and below the transfer seam head. After the end of the sock to be sewn is transferred and fixed to the transfer seam head, the upper and lower sock-grooming modules work together to turn the sock inside the lower sock tube inside over and move it onto the upper sock tube. The sock is in a state where the end to be sewn is at the bottom and the main body is at the top, waiting for subsequent sewing operations. The upper frame is equipped with an upper sock tube via an upper sock tube lifting mechanism. The upper sock tube can be raised and lowered. A claw is installed on the upper frame. The claw driving component drives the sock clamping surface of the claw to move closer to or away from the outer wall of the upper sock tube, thereby pressing the sock tightly onto the upper sock tube. This effectively prevents the sock from slipping down when the lower sock tube is moved onto the upper sock tube and then removed, as well as during sewing operations. The upper sock tube is a hollow tube with open ends. An upper negative pressure connection component is connected to the upper end of the upper sock tube and is used to suck out the sock with negative pressure after the sewing is completed and released, thus completing the output of the finished product. The lower end of the lower sock tube is equipped with a negative pressure connection component, which creates negative pressure at the upper opening of the tube to suck in and straighten the sock. The lower sock tube lifting mechanism drives the lifting and lowering action of the upper and lower sock tubes. On the one hand, the repeated extension and retraction action helps the opening of the tube to suck in the sock. On the other hand, the rising action of the upper and lower sock tubes can put the sock onto the upper sock tube of the upper sock module. The claw body clamps the sock onto the tube body, thus achieving the effect of transferring the sock partially or completely flipped over onto the upper sock tube. In particular, a sock clamping relief groove is provided at the upper end of the lower sock tube to allow room for the clamping action of the claw body, ensuring that the clamping action surface of the claw body presses the sock onto the sock tube and does not affect the smooth withdrawal of the lower sock tube. The sock-feeding seat is horizontally movable on the connecting seat via a horizontal transfer mechanism. It can move towards the sock body being transferred to the transfer tray. The sock-feeding tube on the sock-feeding seat laterally moves the sock body, making it easier for the sock body to be adsorbed by the tube opening. After adsorption is completed, the sock-feeding seat can be reset and moved to below the transfer seam. It has a high degree of mechanization.

[0036] As an optimization of the transfer seam head, the transfer seam head includes a seam head base and two semi-circular toothed rings hinged together at the lower end of the seam head base. One of the rings is fixed below the seam head base, and the other can be folded and rotated, having an unfolded flat circular shape and a double-layered semi-circular shape that can be rotated to overlap. A ring lock is used to limit and lock the transfer seam head in the circular shape. The engagement action of the semi-toothed ring is realized by a flipping drive assembly. A sock tube through-hole is vertically inserted into the seam head base, and the semi-toothed ring is located at the lower end of the sock tube through-hole. The ring lock and flipping drive assembly are existing technologies and will not be further elaborated.

[0037] As an optimization, the lateral drive assembly includes a horizontal screw and a fifth rotary actuator. The horizontal screw and the horizontal guide rod are parallel to each other. A lateral screw sleeve is provided on the horizontal screw, and the lateral screw sleeve is connected to the lateral slider. A guide sleeve is fitted on the horizontal screw and is fixedly connected to the lateral base. Bearings are respectively provided between the two ends of the guide sleeve and the two ends of the horizontal screw. A horizontal guide groove is formed on the guide sleeve, and a guide block is provided in the horizontal guide groove. The lateral screw sleeve is connected to the lateral slider through the guide block.

[0038] The lateral movement drive assembly is specifically driven by a second rotary actuator, with transmission achieved through a meshing lateral movement sleeve and a horizontal screw, facilitating precise control of the lateral movement slider's movement. The lateral movement slider is slidably connected to the guide sleeve, ensuring more stable positioning. The guide sleeve is tubular, and the horizontal screw is mounted within it via bearings, allowing for free rotation. A guide block and a horizontal guide groove are provided between the guide sleeve and the lateral movement slider. This avoids relative rotation between the guide sleeve and the lateral movement slider without affecting its horizontal translation. The lateral movement sleeve, guide block, and lateral movement slider are fixedly connected, enabling the horizontal screw to rotate, driving the lateral movement sleeve to translate, thereby controlling the horizontal translation of the lateral movement slider and the lower sock seat, thus providing a transmission effect.

[0039] As an optimization of the sock-raising module, the sock-raising tube lifting mechanism includes a sock-raising driven wheel and a sock-raising driving wheel distributed vertically. The sock-raising driven wheel and the sock-raising driving wheel are connected by an upper synchronous belt. The sock-raising driving wheel is connected to a first rotary drive. The upper synchronous belt is connected to the sock-raising tube through an upper transmission seat. A limiting guide component is provided between the sock-raising tube and the upper frame, which enables the sock-raising tube to move only along the axial direction.

[0040] An upper timing belt is synchronously wound around the driven wheel and the driving wheel of the upper sock. The upper timing belt can be a toothed belt, chain, timing belt or other feasible strip structure. The output end of the first rotary driver is fixedly connected to the driving wheel of the upper sock to provide driving force. The upper transmission seat on the upper sock tube is also fixed on the upper timing belt on one side of the upper timing belt to realize the transmission drive of the first rotary driver to rotate and the upper sock tube to rise and fall. The limiting guide component is used to apply a vertical positioning effect to the upper sock tube.

[0041] As another feasible solution for the sock tube lifting mechanism, the sock tube lifting mechanism includes a vertically arranged screw, a screw sleeve on the screw, the screw is connected to a first rotary driver, and the screw sleeve is connected to the sock tube through an upper transmission seat.

[0042] The lifting mechanism of Shangli sock tubes transmits power through meshing screw sleeves and screws, resulting in high transmission rigidity and stable transmission.

[0043] Furthermore, the limiting and guiding assembly includes at least two vertically arranged and parallel guide rods mounted on the upper frame, which slide along the upper transmission seat. The upper transmission seat includes an L-shaped slider with three triangularly distributed guide rods passing through it. The L-shaped slider is connected to the upper sock tube via an upper sock tube clamp, and the upper timing belt is fixed to one side of the inner corner of the L-shaped slider via an upper timing belt fixing seat.

[0044] The guide rod passes through the upper transmission seat to achieve vertical positioning, adapting to the lifting and lowering of the upper stocking tube. The L-shaped slider is positioned by three parallel guide rods forming a triangle, improving horizontal stability. The upper stocking tube clamp allows for detachable fixing of the L-shaped slider and the upper stocking tube, providing flexibility. The upper timing belt fixing seat is detachably fixed to the L-shaped slider, using a clamping method to fix the upper timing belt and the L-shaped slider, facilitating flexible adjustment of the fixing position. Moreover, the upper timing belt fixing seat is fixed on the inner corner side, that is, within the triangular distribution plane of the guide rod, ensuring uniform force distribution.

[0045] As an optimization, the bottom of the upper frame is provided with two claws evenly distributed along the circumference of the upper sock tube, and the two claws are connected to a claw drive assembly. The claw drive assembly includes a double-headed synchronous cylinder fixed to the bottom of the upper frame, which is connected to the two claws; or, the claw drive assembly includes left and right slides fixed to the bottom of the upper frame, which are connected to the two claws; or, the claw drive assembly includes finger cylinders fixed to the bottom of the upper frame, which are connected to the two claws; or, the claw drive assembly includes two linear actuators fixed to the bottom of the upper frame, which are connected to the two claws one-to-one.

[0046] Two claws are located on opposite sides of the upper stocking tube, clamping the stocking from the same height on both sides, resulting in good fixation. The claw drive assembly is used to drive the claws to move upwards and away from the upper stocking tube, achieving the effect of clamping and releasing the stocking. As a first option, the claw drive assembly is implemented using a double-headed synchronous cylinder, with the two claws respectively positioned on the two output sliding ends of the cylinder, ensuring synchronized movement of the two claws. As a second option, the claw drive assembly is driven by left and right slides, with the claws fixed to the two slides respectively. The movement of each slide drives the claws to move closer to or away from the lower stocking tube, and the slides can be driven by lead screws, motors, etc. As a third option, a clamping finger cylinder provides the driving force; this drive assembly technology is mature and provides stable operation. As a fourth option, the claws are independently controlled by linear actuators, and the linear actuators have a larger output torque, resulting in a more secure fixation of the stocking. Among them, the dual-head synchronous cylinder, the left and right sliding tables, and the finger cylinder are common knowledge and will not be elaborated on.

[0047] As an optimization of the claw body, the claw body includes an arc-shaped segment and a straight segment. The outer end of the arc-shaped segment has a detachable jaw body on the inner side. The inner end of the arc-shaped segment is connected to the outer end of the straight segment as one unit. The claw body drive component is a double-headed synchronous cylinder. The inner end of the straight segment is fixed to the slide of the double-headed synchronous cylinder through a claw seat.

[0048] One end of the straight segment is fixed to the slide table via a claw seat, and the other end is connected to the arc segment. The two arc segments can be closed to form an approximate semi-circular ring, which is adapted to the shape of the upper stocking tube. A clamping body is set on the inner side of the arc segment, and the inner side of the clamping body forms the clamping surface. This surface is used to press the stocking body tightly against the outer wall of the upper stocking tube. The detachable design makes the clamping body more flexible to install and remove. The clamping body can be equipped with an elastic block to prevent damage to the stocking body and also increase the contact area and improve the vertical fixing effect.

[0049] As an optimization of the upper negative pressure connection assembly, the upper negative pressure connection assembly includes an upper sock tube guide seat sleeved on the upper end of the upper sock tube and connected to the upper frame. The upper sock tube guide seat is provided with an upper guide tube, and the upper end of the upper guide tube is provided with an upper negative pressure connector. The upper sock tube can move axially along the upper guide tube, and a first sealing ring is provided between the upper guide tube and the upper sock tube. The first sealing ring is fixed to the upper guide tube by an annular first sealing ring fixing seat.

[0050] The upper guide tube is located at the upper end of the upper sock tube guide seat, positioning the upper sock tube from the top. The upper sock tube always slides inside the upper guide tube. The first sealing ring achieves a seal between the upper sock tube and the upper guide tube, ensuring a sealed negative pressure channel between the upper negative pressure connector and the lower end of the upper sock tube, which is conducive to smoothly sucking out the sock body through negative pressure.

[0051] Furthermore, the upper frame includes an upper frame top seat and an upper frame base distributed vertically. The upper frame top seat and the upper frame base are connected to the side columns by three upper guide rods. The double-headed synchronous cylinder is fixed on the upper frame base, and the upper sock tube guide seat is fixed on the upper frame top seat.

[0052] As an optimization of the sock-feeling module, two sock-feeling grooves are evenly distributed circumferentially at the upper end of the sock tube. M is preferably 2, that is, the two sock-feeling grooves are located on two opposite sides of the sock tube, which are adapted to the position and clamping direction of the clamping surface of the claw body.

[0053] As an optimization of the sock-feeding lifting mechanism, the sock-feeding lifting mechanism includes a lower timing belt disposed on one side of the sock-feeding tube. One end of the lower timing belt is provided with a driven sock-feeding wheel connected to the sock-feeding seat, and the other end is provided with a driving sock-feeding wheel. The driving sock-feeding wheel is connected to a second rotary drive, and the lower timing belt is connected to the sock-feeding tube through a lower transmission seat.

[0054] The lower sock tube lifting mechanism is driven by a second rotary driver. The lower timing belt is a ring and is synchronously connected between the lower sock tube drive wheel and the lower sock tube driven wheel. The lower transmission seat is fixed on the straight section of the lower sock tube and the lower timing belt to achieve synchronous lifting of the straight section and the lower sock tube, thus achieving the transmission effect.

[0055] As an optimization, the lower synchronous belt is a toothed belt, and the lower driving pulley and drive pulley are toothed pulleys adapted to it. The toothed belt and the toothed pulley mesh and transmit power, resulting in high transmission stability and less slippage. Obviously, the lower synchronous belt can also be a transmission chain, with the lower driving pulley and driven pulley being matching gears. The transmission chain is less prone to deformation and has higher structural strength and durability.

[0056] As an optimization, the upper end of the lower sock tube passes through the positioning flange at the upper end of the lower sock seat, and the lower drive seat is fixed to the lower end of the lower sock tube. A guide assembly is provided between the lower drive seat and the lower sock seat, enabling the lower sock tube to move axially along the positioning flange. The guide assembly includes a guide post located on one side of the lower sock tube and parallel to the central axis of the positioning flange. The guide post is fixed to the lower sock seat and slidably connected to the lower drive seat. At least one axially arranged and circumferentially distributed guide groove is provided on the guide post, and a slider is provided within the guide groove. The slider is detachably fixed to the lower drive seat.

[0057] The positioning flange and guide assembly horizontally limit the movement of the lower sock tube, allowing it to move only vertically, thus providing a positioning effect. The lower drive seat is located on the lower end of the lower sock tube and adapts to its upward movement. The lower drive seat is slidably connected to the guide post, which is parallel to the lower sock tube, also providing a positioning effect. The inner end of the slider on the lower drive seat slides within the guide groove on the side of the guide post, providing a circumferential limiting effect and preventing rotation of the lower drive seat. Furthermore, the slider and lower drive seat are detachable and can be easily disassembled and assembled. Specific detachable fixing can be achieved using bolts.

[0058] Furthermore, the guide post has a timing belt hole that axially penetrates the guide post. One side of the lower timing belt passes through the timing belt hole, and the other side passes through the timing belt fixing hole of the lower transmission seat. Two compression clamps are located on the inner and outer sides of the lower timing belt, respectively, within the timing belt fixing hole. At least one compression clamp has a locking pin that radially penetrates the lower transmission seat. The upper end of the guide post is connected to the guide post seat of the lower sock-cleaning seat. An upper timing belt outlet is opened on the inner side of the upper end of the guide post. The lower sock-cleaning driven wheel is located at the upper timing belt outlet. The lower end of the guide post abuts against the C-shaped step of the base of the lower sock-cleaning seat. The base of the lower sock-cleaning seat has a timing belt lower pass groove connected to the C-shaped step, and the lower sock-cleaning driving wheel is located within the timing belt lower pass groove.

[0059] The guide post can be tubular. A straight section of the lower synchronous belt is located inside the synchronous belt hole, resulting in a compact structure and improved space utilization. A synchronous belt fixing hole is provided on the other side of the lower synchronous belt. Two clamping blocks clamp the lower synchronous belt from both sides, and the pressure from the inner wall of the synchronous belt fixing hole completely clamps the lower synchronous belt. A locking pin passes through both the pin hole and the clamping blocks, achieving axial positioning of the clamping blocks and the lower transmission seat. This effectively connects the lower transmission seat and a small section of the lower synchronous belt, providing flexible and easy disassembly. The upper synchronous belt outlet is for the upper bent section of the lower synchronous belt to pass through, and the lower synchronous belt groove is for the lower bent section. A C-shaped step supports the guide post upwards, and its internal opening communicates with the synchronous belt hole. The shape of this opening is adapted to the lower drive pulley, facilitating its insertion or removal.

[0060] As another feasible optimization of the sock-feeding lifting mechanism, the sock-feeding lifting mechanism includes a third rotary driver fixed to the sock-feeding seat via a driver mounting base and located on one side of the sock-feeding tube. A lower transmission seat is fixed on the sock-feeding tube. The output end of the third rotary driver is fixedly connected to the lower end of the drive screw. The drive screw is parallel to the sock-feeding tube, and its upper end is rotatably connected to the mating hole at the upper end of the lower transmission seat. The lower transmission seat is provided with a lifting nut that meshes with the drive screw. A tubular lower positioning rod is vertically arranged on the sock-feeding seat. The lower positioning rod passes through the lower positioning hole of the lower transmission seat. The lower transmission seat is slidably connected to the outer wall of the lower positioning rod. The drive screw is rotatably connected to the lower positioning rod. A vertically extending lower guide groove is provided through the side of the lower positioning rod. The lifting nut passes through the lower guide groove and the lower transmission seat and is detachably fixed.

[0061] The lower sock lifting mechanism can also be driven by a third rotary actuator, which transmits power through a drive screw and a lifting nut to achieve the lifting effect of the lower sock. The third rotary actuator is mounted on the lower sock seat with its output end vertically upwards via an actuator mounting base. The drive screw rotates synchronously with this output end. The lower transmission seat and the lower sock are fixedly connected, lifting synchronously. The lifting nut is located on the lower transmission seat, and the rotation of the drive screw drives the lower transmission seat to lift, thereby driving the lifting of the lower sock. The transmission effect is good. The mating hole is located at the upper end of the lower transmission seat for positioning the drive screw from above, ensuring the drive screw... The rod rotates stably in a vertical position. The lower transmission seat is fitted onto the lower positioning rod, providing a positioning effect. The drive screw and lifting nut are located inside the lower positioning rod, improving space utilization. The lower guide groove is used to connect the lifting nut and the lower transmission seat. The side of the lifting nut has a connector that slides into the lower guide groove. One side of the connector has a slot, and the other side extends laterally. The lifting nut is locked in the slot to form a vertical limit. The extended section is fixed to the lower transmission seat with bolts, making disassembly and assembly convenient. As a further optimization, a vertically extending positioning groove is provided inside the lower positioning hole. The connector is locked in the positioning groove, providing a positioning effect.

[0062] Furthermore, a thread unwinding disc is fitted onto the upper end of the lower sock tube. The thread unwinding disc is connected to a linear actuator via two parallel push rods, which are parallel to the lower sock tube. The upper ends of the two push rods are located at the bottom of the thread unwinding disc, and the lower ends are connected to the linear actuator via an arc-shaped linkage seat.

[0063] The thread unwinding reel is used to transfer the thread ends of the socks on the transfer reel to the transfer seam head. The thread unwinding reel is driven by a linear actuator, which is transmitted through push rods. There are two push rods to ensure a good and stable transmission effect. The two push rods are connected to a linear actuator through an arc-shaped linkage seat, which reduces the cost of driving force and ensures the synchronicity of the lifting of the two push rods.

[0064] As an optimization of the lower negative pressure connection assembly, the lower negative pressure connection assembly includes a lower guide tube disposed in the lower sock seat, the lower end of the lower sock tube is disposed in the lower guide tube and is axially movably connected to it, a second sealing ring is provided between the lower guide tube and the lower sock tube, the second sealing ring is disposed in the second sealing ring groove and fixed by a second sealing ring seat in an annular shape, and a lower negative pressure connector is provided on the lower end of the lower guide tube.

[0065] The lower sock tube is slidably connected to the lower guide tube in a sealed manner. Under the premise of meeting the requirements of vertical lifting, a negative pressure channel is formed between the lower negative pressure connector and the upper end of the lower sock tube, ensuring that the upper end of the lower sock tube maintains negative pressure to smoothly suck up the sock body. The second sealing ring is stuck in the second sealing ring groove, which is stable in positioning and easy to disassemble and assemble.

[0066] In the aforementioned secondary sock-turning mechanism, the side of the sock-upper module is provided with a sock-inserting driver. The outer end of the sock-inserting shaft of the sock-inserting driver is provided with at least one rolling element that can reduce the coefficient of friction when in contact with the sock body when the sock-inserting shaft pushes the sock body. The rolling element is connected to the sock-inserting shaft through a rolling element frame. Alternatively, the sock-upper module includes a guide seat that can be mounted on the sewing device. At least two parallel and vertically arranged sock-inserting shafts are vertically mounted on the sock-inserting guide seat. The sock-inserting shafts are slidably connected to the sock-inserting guide seat. The upper end of the sock-inserting shaft is connected to the sock-inserting shaft drive assembly. The lower end of the sock-inserting shaft is provided with a rolling element for reducing the coefficient of friction when in contact with the sock body.

[0067] The auxiliary sock-stuffing assembly assists in the negative pressure capture of the sock body during the lowering of the sock tube. Specifically, it drives the sock-stuffing shaft to extend and retract via a sock-stuffing driver to insert the top of the sock into the lowering sock tube. A rolling element is provided at the end of the sock-stuffing shaft, converting the sliding friction between the shaft and the sock body into rolling friction. This effectively avoids scratching the sock body and reduces resistance, facilitating a smoother insertion of the sock into the lowering sock tube. In one configuration, a pin is provided on the rolling element holder, through which the rolling element is rotatably connected, facilitating easy assembly and disassembly. The sock-stuffing driver is a linear driver, directly driving the lifting and lowering of the rolling element through the extension and retraction of its output end, resulting in a simple structure. In another configuration, at least two parallel sock-stuffing shafts are guided and mounted on a sock-stuffing guide seat. The sock-stuffing shaft drive assembly drives the lifting and lowering of the sock-stuffing shafts. Multiple sock-stuffing shafts make the connection and transmission between the sock-stuffing shaft drive assembly and the rolling element more stable.

[0068] As an optimization of the sock shaft drive assembly, the sock shaft drive assembly includes a transversely arranged drive shaft. One end of the drive shaft is connected to a fourth rotary actuator, and the other end is connected to the sock shaft via a gear and rack structure. The gear and rack structure includes a rack disposed on the outer wall of the sock shaft, the central axis of the rack being parallel to the central axis of the drive shaft. A gear capable of driving the rack to move axially is fixed on the drive shaft. The rack includes several axially evenly distributed tooth grooves disposed on the outer wall of the drive shaft; the gear is disposed within a gear housing, and the gear housing is connected to the sock guide seat.

[0069] The sock shaft drive assembly specifically provides driving force through a fourth rotary actuator. The drive shaft and rack and pinion structure complete the transmission between the fourth rotary actuator and the sock shaft, converting the rotational driving force of the fourth rotary actuator into a force driving the axial extension and retraction of the sock shaft. The rack and drive shaft are L-shaped, adapted to their respective positions above, to the side, and between the sock guide seat. The gear and drive shaft rotate synchronously, and the gear meshes with the rack on the sock shaft, achieving transmission between them. The rack is specifically composed of toothed grooves directly set on the side of the drive shaft, eliminating the need for additional fixing components. This results in a simple, integrated structure with high structural strength. The gear seat is mounted on the sock guide seat for mounting the gear; as an optimization, the gear seat is integrated with the sock guide seat, also possessing high structural strength.

[0070] Furthermore, the gear housing includes a base body with a shaft hole. Several gear mounting holes are distributed axially upwards along the shaft hole. Gears are installed in these mounting holes, and the gears pass through a transmission hole to mesh with a rack for transmission. The number of gear mounting holes is equal to the number of the drive shaft. The drive shaft passes through both the gear mounting holes and the shaft hole. There are two gear mounting holes located at both ends of the base body. Both ends of the gear mounting holes are sealed by end plates, and the drive shaft passes through one of these end plates.

[0071] The base has a shaft hole and a transmission hole, and the axial directions of the shaft hole and the transmission hole are perpendicular to each other, matching the position of the drive shaft and the transmission shaft. The gear mounting hole is located on the shaft hole, and its inner diameter is larger than that of the shaft hole. The gear rotates in the gear mounting hole without affecting the rotation, and at the same time, it has a limiting effect. The sealing plate and the base are fixed with bolts, which is convenient for disassembly and assembly. The number of gear mounting holes is adapted to the transmission connection between the drive shaft and each transmission shaft. The gear mounting holes are set at both ends of the shaft hole to facilitate the insertion of the gear. The sealing plate is used to cover the gear from the outside to prevent the gear from falling out, and has a limiting effect. The sealing plate and the base are fixed with bolts, which is convenient for disassembly and assembly. At least one sealing plate has a through hole for the transmission shaft to pass through.

[0072] As an optimization, the sock-plug shaft passes through the guide hole of the sock-plug guide seat, and a circumferential positioning structure is provided between the sock-plug shaft and the sock-plug guide seat. The sock-plug guide seat is provided with a connecting plate that can be connected to the seam head base. Several first bolt holes are provided on the connecting plate. The fourth rotary actuator is fixed to the actuator mounting base by bolts. The actuator mounting base is provided with several second bolt holes.

[0073] The pleated shaft is slidably connected in the guide hole and can be vertically raised and lowered. The circumferential positioning structure of the shaft body ensures that the rack of the pleated shaft always faces the gear, restricts the circumferential rotation of the pleated shaft, and ensures stable transmission between the drive shaft and the pleated shaft. Preferably, the circumferential positioning structure of the shaft body includes positioning surfaces provided on the side of the pleated shaft and the inner wall of the guide hole. The positioning surfaces extend along the axial direction of the guide hole and the pleated shaft, and the two positioning surfaces are in contact to achieve rotational limitation. The connecting plate is L-shaped, and its bottom surface is fixed to the sewing head base by bolts. A first bolt hole is provided on the side, and a second bolt hole is provided at one end of the driver mounting base. Bolts pass through the first bolt hole and the second bolt hole to fix the driver mounting base. The fourth rotary driver is fixed on the driver mounting base, thereby realizing the detachable installation and fixation of the fourth rotary driver and the sewing head base, which is convenient for disassembly and assembly.

[0074] As an optimization, the rolling element holder is U-shaped, and a pin is fixed on the rolling element holder. The pin passes through the rolling element that is rotatably connected to it. The outer ends of all the rollers are fixed to the positioning plate, and the positioning plate is connected to the rolling element holder by several bolts.

[0075] The rolling element frame is a U-shaped structure with the opening facing downwards. Rolling elements are installed inside the opening and are rotatably connected by pins, making disassembly and assembly convenient. The outer ends of the sock shafts are all fixed to the positioning plate, meaning that all the sock shafts are fixed as a whole by the positioning plate, which is beneficial for the synchronous lifting and lowering of the sock shafts. The positioning plate and the rolling element frame are connected by bolts, providing flexible disassembly.

[0076] In the aforementioned secondary sock-turning mechanism, an auxiliary roller is provided on the sock-turning seat on the upper end of the sock body feeding side of the sock tube, and the auxiliary roller is located outside the transfer plate. The auxiliary roller is connected to the sock-turning seat through the auxiliary roller seat.

[0077] The auxiliary roller assists the sock body as it rests against the opening of the lower sock tube, awaiting suction. Located on the edge of the sock body's resting position, the auxiliary roller can rotate freely, reducing resistance between the sock body and this edge, thus facilitating smooth suction of the sock body from the lower sock tube. Furthermore, the auxiliary roller is parallel to the bottom surface of the lower sock tube, and its axial direction is perpendicular to the direction in which the sock body rests. This ensures that the roller's rotational direction is parallel to the direction in which the sock body is sucked in, further promoting smooth suction.

[0078] Compared with the prior art, the present invention has the following main advantages:

[0079] 1. The secondary turning method of the present invention is used to perform the sewing operation after the sock body is knitted, and to output the finished sock with the right side facing out, eliminating the need for subsequent turning steps.

[0080] 2. A claw is installed on the upper frame to effectively prevent the sock from slipping down when the sock is moved from the lower sock tube to the upper sock tube and when it is pulled out, as well as during sewing operations.

[0081] 3. A sock-clamping clearance groove is provided at the upper end of the lower sock tube to allow room for the clamping action of the claw body, ensuring that the clamping surface of the claw body presses the sock body tightly onto the sock tube and does not affect the smooth withdrawal of the lower sock tube.

[0082] 4. The sock-feeding seat is horizontally movable on the connecting seat via a horizontal transfer mechanism. It can move towards the sock body being transferred to the transfer tray. The sock-feeding tube on the sock-feeding seat laterally moves the sock body, making it easier for the sock body to be adsorbed by the tube opening.

[0083] 5. The auxiliary roller is used to assist the sock body when it rests against the opening of the lower sock tube and is waiting to be sucked in, which helps the sock body to be sucked in smoothly. Attached Figure Description

[0084] Figure 1 This is a schematic diagram of the overall structure provided by the present invention (Example 1);

[0085] Figure 2 This is a schematic diagram of the sock tube lifting mechanism provided by the present invention (Example 1);

[0086] Figure 3 yes Figure 2 Enlarged detail view of point A in the middle;

[0087] Figure 4 This is a schematic diagram of the cooperation between the upper transmission seat, guide rod, and L-shaped slider provided by the present invention (Example 1);

[0088] Figure 5 This is a schematic diagram of the upper negative pressure connection component provided by the present invention;

[0089] Figure 6 This is a schematic diagram of the claw drive assembly provided by the present invention (Example 3).

[0090] Figure 7 This is a schematic diagram of the claw drive assembly provided by the present invention (Example 4).

[0091] Figure 8 This is a schematic diagram of the structure of the sock-conditioning module provided by the present invention;

[0092] Figure 9 This is a schematic diagram of the structure of the sock-feeding seat provided by the present invention;

[0093] Figure 10 This is a schematic diagram of the structure of the guide post provided by the present invention;

[0094] Figure 11 This is a schematic diagram of the horizontal transfer mechanism provided by the present invention;

[0095] Figure 12 This is a schematic diagram of the structure of the transverse drive component provided by the present invention;

[0096] Figure 13 This is a cross-sectional schematic diagram of the transverse drive component provided by the present invention;

[0097] Figure 14 This is a schematic diagram of the transverse slider provided by the present invention;

[0098] Figure 15 This is a schematic diagram of the sock-lifting mechanism provided by the present invention (Example 5);

[0099] Figure 15a This is a cross-sectional schematic diagram of the sock-lifting mechanism provided by the present invention (Embodiment 5);

[0100] Figure 16 yes Figure 8 Enlarged detail view of point B in the middle;

[0101] Figure 17 This is a schematic diagram of the extrusion clamping block structure provided by the present invention;

[0102] Figure 18 This is a schematic diagram of the structure of the negative pressure connection assembly provided by the present invention;

[0103] Figure 19 This is a schematic diagram of the auxiliary stocking module provided by the present invention (Example 1).

[0104] Figure 20 This is a schematic diagram of the auxiliary sock-plugging module provided by the present invention (Example 6).

[0105] Figure 21 This is a schematic diagram of the structure of the sock shaft drive assembly provided by the present invention;

[0106] Figure 22 This is a schematic diagram of the gear housing provided by the present invention;

[0107] Figure 23 This is a schematic diagram of the structure of the transfer suture head provided by the present invention;

[0108] Figure 24 This is a schematic diagram showing how the sock-feeding module and the auxiliary sock-insertion module provided by the present invention work together to feed the sock body into the sock-feeding tube;

[0109] Figure 25This is a schematic diagram of the seam of the sock body provided by the present invention.

[0110] In the diagram, the components are: 1. Transfer seam head; 2. Upper sock-feeding module; 3. Upper sock-feeding tube; 4. Upper sock-feeding tube lifting mechanism; 5. Claw body; 6. Sock body; 7. Claw body drive assembly; 8. Upper negative pressure connection assembly; 9. Lower sock-feeding module; 10. Horizontal transfer mechanism; 11. Connecting seat; 12. Lower sock-feeding seat; 13. Lower sock-feeding tube; 14. Lower sock-feeding tube lifting mechanism; 15. Lower negative pressure connection assembly; 16. Transfer plate; 17. Transfer plate lifting drive unit; 18. Sock clamping clearance groove; 19. Lateral movement base; 20. Horizontal guide rod; 21. Horizontal movement slider; 22. Horizontal movement drive assembly; 23. Seam head base; 24. Half-tooth ring; 25. Ring lock; 26. Sock-feeding tube through hole; 27. Upper sock-feeding driven wheel; 28. Upper sock-feeding driving wheel; 29. ​​Upper synchronous belt; 30. Turning. Rotary drive assembly 31, first rotary driver 32, upper transmission seat 33, guide rod 35, L-shaped slider 36, upper stocking tube clamp 37, upper synchronous belt fixing seat 38, double-headed synchronous cylinder 39, arc-shaped section 40, jaw body 41, claw seat 42, straight section 43, slide table 44, left and right slide tables 45, finger cylinder 46, upper stocking tube guide seat 47, upper guide tube 48, upper negative pressure connector 49, first sealing ring 50, first sealing ring fixing seat 51, upper frame top seat 52, upper frame base 53, lower synchronous belt 54, lower stocking driven wheel 55, lower stocking driving wheel 56, lower transmission seat 57, second rotary driver 58, positioning flange 59, guide assembly 60, guide column 61, guide 62. Slide rail 63. Synchronous belt hole 64. Synchronous belt fixing hole 65. Extrusion clamp 66. Upper synchronous belt outlet 67. C-shaped step 68. Lower synchronous belt through groove 69. Locking pin 70. Driver mounting base 71. Third rotary driver 72. Drive screw 73. Lifting nut 74. Lower positioning rod 75. Lower positioning hole 76. Thread unwinding disc 77. Push rod 78. Linear driver 79. Arc-shaped linkage seat 80. Stocking insert driver 81. Stocking insert shaft 82. Rolling element 83. Sewing head device 84. Rolling element frame 85. Stocking insert shaft drive assembly 86. Drive shaft 87. Fourth rotary driver 88. Rack 89. Gear 90. Gear groove 91. Stocking insert guide seat 92. Gear seat 93. Seam body 94. Shaft hole; 95. Gear mounting hole; 96. Sealing plate; 97. Transmission hole; 98. Guide hole; 99. Connecting plate; 100. Pin; 101. Positioning plate; 102. Auxiliary roller; 103. Auxiliary roller seat; 104. Seam head assembly; 105. Auxiliary sock insert module; 106. Lower guide tube; 107. Second sealing ring; 108. Second sealing ring groove; 109. Second sealing ring seat; 110. Lower negative pressure connector; 111. Fifth rotary actuator; 112. Horizontal screw; 113. Transverse sliding screw sleeve; 114. Guide sleeve; 116. Horizontal guide groove; 117. Guide block; 118. Cylinder fixing seat; 119. Rolling chamber; 120. Ball outlet; 121. Double guide rod cylinder; 122. Lower guide groove; 123. Connector; 124. Detailed Implementation

[0111] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments. Example 1

[0112] Specific embodiments of this two-stage sock-turning method include:

[0113] S1. Move the transfer plate 17 to connect the unsewn toe of the sock body 7 with the transfer seam 1;

[0114] S2. Allow the unfixed portion of the sock body 7 to enter the lower sock tube 14 of the lower sock module 10, and make the sock opening inside the lower sock tube 14 face downwards;

[0115] S3. The upper sock tube 4 of the upper sock module 2 descends, and the lower end of the upper sock tube 4 passes through the unstitched toe of the sock body 7 and enters the sock body 7 and at least part of it enters the lower sock tube 14;

[0116] S4. The unwinding disc 77 rises and cooperates with the transfer disc 17 and the transfer seam head 1 to transfer the sock toe onto the transfer seam head 1;

[0117] S5. Lower the upper part of the sock cuff 14 to the preset height;

[0118] S6. The upper sock tube 4 rises and resets, while the lower sock sleeve 14 rises in coordination until the claw body 6 can enter the sock clamping relief groove 19, then the lower sock sleeve 14 stops moving.

[0119] S7. When the claw body 6 passes through the sock clamping groove 19 and fixes the sock body 7 on the upper sock tube 4, the lower sock tube 14 descends and resets.

[0120] S8. After the transfer plate 17 is reset, the transfer seam head 1 is turned over and closed, and the seam is sewn through the seam head assembly 105;

[0121] S9. After the suturing is completed, the transfer suture head 1 and suture head assembly 105 are reset;

[0122] S10. The claw body 6 is reset, the height of the upper sock tube 4 is lowered so that the sock body 7 is disengaged from the upper sock tube 4, and the sock body 7 is sucked out of the upper sock tube 4 by the negative pressure of the upper sock tube 4, thus completing the second sock turning;

[0123] S11. After completing the second sock turning, the height of the upper sock tube 4 is reset and the negative pressure stops.

[0124] Specifically, the secondary sock-turning method of the present invention is used to perform a toe-sewing operation after the sock body 7 is knitted, and to output the finished sock with the right side facing out. In step S1, a transfer plate 17 is mounted on a swing arm. After the sock body 7 is knitted, the swing arm rotates, transferring the transfer plate 17 to the area below the transfer seam head 1, where it aligns with the transfer seam head 1. Step S2 mainly uses the negative pressure of the lower sock tube 14 to draw in the sock body 7 and pull it downwards to straighten it. In step S4, the transfer plate 17 transfers the threads from the toe of the sock to the transfer seam head 1. The transfer plate 17 can be removed after the sock body 7 has been transferred. The cooperation between the transfer plate 17 and the transfer seam head 1 is prior art and will not be described in detail. In steps S5 and S6, the upper end of the lower sock tube 14 is higher than the claw body 6, which makes it easier for the claw body 6 to effectively clamp the sock body 7. At this time, part of the sock body 7 is turned over and forms an M shape. In step S10, the sock body 7 with the sewn toe is sucked out from the upper sock tube 4 by negative pressure. At this time, the turned-over sock body 7 is turned over again and reset to the state with the right side facing outward.

[0125] As an optimization of step S2, the lower stocking tube 14 performs negative pressure suction on the stockings, and in conjunction with the auxiliary stocking-inserting module 106, inserts the unsecured portion of the stocking 7 into the lower stocking tube 14. While performing negative pressure suction, the lower stocking tube 14 reciprocates and extends, which facilitates the adsorption and capture of the stocking 7 by the lower stocking tube 14.

[0126] As an optimization, in step S1, the sock-feeding module 10 moves the sock-feeding tube 14 below the auxiliary sock-feeding module 106 by translation. The rolling element 83 of the auxiliary sock-feeding module 106 descends and rolls into contact with the middle of the sock body 7, so that the sock body 7 is at least partially inserted into the upper end of the sock-feeding tube 14. The sock-feeding is completed by the negative pressure of the sock-feeding tube 14, so that the sock opening inside the sock-feeding tube 14 faces downward. At this time, the rolling element 83 returns to its original height and the negative pressure of the sock-feeding tube 14 stops. Finally, the sock-feeding tube 14 returns to its original horizontal position.

[0127] Specifically, the sock-feeding module 10 moves toward the sock body 7 and laterally moves the sock body 7 so that the sock body 7 covers the opening of the sock-feeding tube 14, which is beneficial for the sock body 7 to be captured by the sock-feeding tube 14.

[0128] As an optimization of step S1, before the sock-feeding module 10 feeds the socks, the height of the lower sock tube 14 is increased so that its upper end is higher than the height of the thread unwinding disc 77; at the same time, the height of the upper sock tube 4 is decreased so that the height of the upper end of the lower sock tube 14 is close to the height of the lower end of the upper sock tube 4; after the lower sock-feeding module 10 finishes feeding the socks, the height of the lower sock tube 14 is reset. The preset height is at the opening of the half-toothed ring 25, which is used to connect the threads of the sock body 7 and overlap the sock opening of the sock body 7 to be sewn into a straight line in an interlocking manner, which facilitates subsequent sewing.

[0129] As an optimization of step S6, the upper end of the lower sock tube 14 is provided with two sock-clamping relief grooves 19 distributed in the circumferential direction. The number of claw bodies 6 and the sock-clamping relief grooves 19 are equal and correspond one-to-one. The claw bodies 6 approach the upper sock tube 4 radially through the claw body drive assembly 8.

[0130] Specifically, the claw 6 achieves the effect of fixing the sock body 7 by pressing the sock body 7 tightly onto the upper sock tube 4 through its clamping surface.

[0131] As an optimization of step S8, the transfer head 1 first opens the ring lock 26, and then engages the flipped half-tooth ring 25.

[0132] Specifically, by opening the ring lock 26 to release the limiting position of the half-tooth ring 25, the two half-tooth rings 25 close together in an interlocking manner, bringing together the two halves of the sock opening 7 to be sewn into a straight line, which facilitates subsequent sewing.

[0133] The specific implementation of this secondary sock-turning mechanism is as follows: Figure 1-5 As shown in Figures 8-14, the device includes a transfer seam head 1, an upper stocking module 2 above the transfer seam head 1, an upper stocking module 2 including an upper frame 3, an upper stocking tube 4 vertically arranged on the upper frame 3, the upper stocking tube 4 being connected to the upper frame 3 near its upper end via an upper stocking tube lifting mechanism 5, two claws 6 distributed upwards around the upper stocking tube 4 at the bottom of the upper frame 3, the claws 6 being connected to a claw drive assembly 8 that can drive the claws 6 to approach the upper stocking tube 4 to prevent the stocking 7 from sliding down, and an upper negative pressure connection assembly 9 at the upper end of the upper stocking tube 4.

[0134] Below the transfer seam head 1, there is a sock-feeding module 10. The sock-feeding module 10 is connected to the connecting seat 12 through the horizontal transfer mechanism 11. The sock-feeding module 10 includes a sock-feeding seat 13. A sock-feeding tube 14 with both ends through is provided on the sock-feeding seat 13. A sock-feeding tube lifting mechanism 15 is provided between the sock-feeding tube 14 and the sock-feeding seat 13. A lower negative pressure connecting component 16 is provided at the lower end of the sock-feeding tube 14. A transfer plate 17 is sleeved on the upper end of the sock-feeding tube 14. The transfer plate 17 is connected to the sock-feeding seat 13 through the transfer plate lifting drive unit 18. Two sock-feeding grooves 19 distributed circumferentially are opened at the upper end of the sock-feeding tube 14.

[0135] The horizontal transfer mechanism 11 includes a horizontal transfer base 20 connected to the connecting seat 12. The horizontal transfer base 20 is provided with at least one horizontal guide rod 21. A horizontal transfer slider 22 is provided on the horizontal guide rod 21. A horizontal transfer drive assembly 23 is provided between the horizontal transfer slider 22 and the connecting seat 12. The horizontal transfer slider 22 is connected to the lower sock seat 13.

[0136] Specifically, the main body of this secondary sock-turning mechanism consists of a transfer seam head 1 and an upper sock-grooming module 2 and a lower sock-grooming module 10 respectively located above and below the transfer seam head 1. After the end of the sock body 7 to be sewn is transferred and fixed onto the transfer seam head 1, the upper sock-grooming module 2 and the lower sock-grooming module 10 cooperate to turn the sock body 7 inside the lower sock tube 14 over and move it onto the upper sock tube 4. The sock body 7 is in a state where the end to be sewn is at the bottom and the main body is at the top, waiting for subsequent sewing operations. The upper frame 3 is equipped with an upper sock tube 4 via an upper sock tube lifting mechanism 5. The upper sock tube 4 can be raised and lowered. A claw body 6 is provided on the upper frame 3. The claw body driving component 8 drives the sock clamping surface of the claw body 6 to approach or move away from the outer wall of the upper sock tube 4, thereby pressing the sock body 7 tightly onto the upper sock tube 4. This effectively prevents the sock body 7 from slipping down when the lower sock tube 14 moves the sock body 7 onto the upper sock tube 4 and when it exits during sewing operations. The upper sock tube 4 is a hollow tube with openings at both ends. The upper negative pressure connecting component 9 is connected to the upper end of the upper sock tube 4 and is used to suck out the sock with negative pressure after the sewing is completed and released, thus completing the output of the finished product. The lower end of the lower sock tube 14 is provided with a lower negative pressure connecting component 16, which makes the upper opening of the tube have negative pressure for sucking in the sock body 7 and straightening it. The lower sock tube lifting mechanism 15 is used to drive the lifting and lowering action of the upper and lower sock tube 14. On the one hand, the repeated extension and retraction action can help the opening of the tube to suck in the sock body 7. On the other hand, when the upper and lower sock tube 14 rises, the sock body 7 can be put on the upper sock tube 4 of the upper sock module 2. The claw body 6 clamps the sock body 7 on the tube body, thus achieving the effect of transferring the sock body 7 partially or completely flipped over and put on the upper sock tube 4. In particular, a sock clamping relief groove 19 is provided at the upper end of the lower sock tube 14 to make way for the clamping action of the claw body 6, ensuring that the clamping action surface of the claw body 6 presses the sock body 7 tightly on the sock tube, without affecting the smooth withdrawal of the lower sock tube 14. The lowering seat 13 is horizontally movable on the connecting seat 12 via the horizontal transfer mechanism 11. It can move towards the sock body 7 being transferred to the transfer tray. The lowering sock tube 14 on the lowering seat 13 laterally moves the sock body 7, making it easier for the opening of the lowering sock tube 14 to adsorb the sock body 7. After adsorption is completed, the lowering seat 13 can be reset and moved below the transfer seam head 1, which has a high degree of mechanization.

[0137] like Figure 11-14 As shown, the transverse drive assembly 23 includes a horizontal screw 113 and a fifth rotary actuator 112. The horizontal screw 113 is parallel to the horizontal guide rod 21. A transverse screw sleeve 114 is provided on the horizontal screw 113, and the transverse screw sleeve 114 is connected to the transverse slider 22. A guide sleeve 116 is fitted on the horizontal screw 113, and the guide sleeve 116 is fixedly connected to the transverse base 20. Bearings are respectively provided between the two ends of the guide sleeve 116 and the two ends of the horizontal screw 113. A horizontal guide groove 117 is opened on the guide sleeve 116, and a guide block 118 is provided in the horizontal guide groove 117. The transverse screw sleeve 114 is connected to the transverse slider 22 through the guide block 118.

[0138] Specifically, the lateral movement drive assembly 23 is driven by the fifth rotary actuator 112, and the transmission is achieved by the meshing lateral movement sleeve 114 and the horizontal screw 113, which facilitates precise control of the movement of the lateral movement slider 22. The lateral movement slider 22 is slidably connected to the guide sleeve 116, which makes the positioning more stable. The guide sleeve 116 is tubular, and the horizontal screw 113 is set in the guide sleeve 116 through a bearing, which can rotate freely. A guide block 118 and a horizontal guide groove 117 are provided between the guide sleeve 116 and the lateral movement slider 22. Without affecting the horizontal translation of the lateral movement slider 22, the relative rotation between the guide sleeve 116 and the lateral movement slider 22 is avoided. The lateral movement sleeve 114, the guide block 118, and the lateral movement slider 22 are fixedly connected, so that the horizontal screw 113 drives the lateral movement sleeve 114 to translate, thereby achieving the effect of controlling the horizontal translation of the lateral movement slider 22 and the lower sock seat 13, which has a transmission effect.

[0139] like Figure 23 As shown, as an optimization of the transfer sewing head 1, the transfer sewing head 1 includes a sewing head base 24 and two semi-circular toothed rings 25 with their ends hinged together at the lower end of the sewing head base 24. One of them is fixed below the sewing head base 24, and the other can be folded and rotated, having an unfolded flat circular shape and a double-layered semi-circular shape that can be rotated to overlap. The ring lock 26 is used to limit and lock the transfer sewing head 1 in the circular shape. The biting action of the semi-toothed ring 25 is realized by the flipping drive assembly 31. The sock tube through hole 27 is vertically penetrated on the sewing head base 24, and the semi-toothed ring 25 is disposed at the lower end of the sock tube through hole 27.

[0140] like Figure 2-4 As shown, as an optimization of the sock-raising module 2, the sock-raising tube lifting mechanism 5 includes a driven sock-raising wheel 28 and a driven sock-raising wheel 29 distributed vertically. The driven sock-raising wheel 28 and the driven sock-raising wheel 29 are connected by an upper synchronous belt 30. The driven sock-raising wheel 29 is connected to a first rotary driver 32. The upper synchronous belt 30 is connected to the sock-raising tube 4 through an upper transmission seat 33. A limiting guide assembly 60 is provided between the sock-raising tube 4 and the upper frame 3, which allows the sock-raising tube 4 to move only axially. The limiting guide assembly 60 includes two vertically arranged and parallel guide rods 35 arranged on the upper frame 3. The guide rods 35 pass through the upper transmission seat 33 and are slidably connected to it. The upper transmission seat 33 includes an L-shaped slider 36, on which three guide rods 35 arranged in a triangular shape are threaded. The L-shaped slider 36 is connected to the upper sock tube 4 through the upper sock tube clamp 37. The upper timing belt 30 is fixed to one side of the inner corner of the L-shaped slider 36 through the upper timing belt fixing seat 38.

[0141] Specifically, an upper timing belt 30 is synchronously wound around the driven wheel 28 and the driving wheel 29 of the sock-raising system. The upper timing belt 30 can be a toothed belt, chain, timing belt, or other feasible strip structure. The output end of the first rotary driver 32 is fixedly connected to the driving wheel 29 of the sock-raising system to provide driving force. The upper transmission seat 33 on the sock-raising tube 4 is also fixed on one side of the upper timing belt 30, realizing the transmission drive for the rotation of the first rotary driver 32 to the lifting and lowering of the sock-raising tube 4. The limiting guide assembly 60 is used to apply a vertical positioning effect to the sock-raising tube 4. The guide rod 35 passes through the upper transmission seat 33 to achieve vertical positioning and adapt to the lifting and lowering of the sock-raising tube 4. The L-shaped slider 36 is positioned by three parallel guide rods 35 arranged in a triangle, improving horizontal stability. The upper sock tube clamp 37 enables the L-shaped slider 36 and the upper sock tube 4 to be detachably fixed, providing flexibility. The upper timing belt fixing seat 38 is detachably fixed to the L-shaped slider 36, and the upper timing belt 30 and the L-shaped slider 36 are fixed by clamping, which facilitates flexible adjustment of the fixing position. Moreover, the upper timing belt fixing seat 38 is fixed on the inner corner side, that is, within the triangular distribution plane of the guide rods 35, so that the force is evenly distributed.

[0142] In this embodiment, the bottom of the upper frame 3 is provided with two claws 6 evenly distributed upwards along the circumference of the upper sock tube 4, and the two claws 6 are connected to the claw drive assembly 8. The claw drive assembly 8 includes a double-headed synchronous cylinder 39 fixed to the bottom of the upper frame 3, and the double-headed synchronous cylinder 39 is connected to the two claws 6. The claw 6 includes an arc-shaped segment 40 and a straight segment 43. The inner side of the outer end of the arc-shaped segment 40 is provided with a detachable jaw body 41. The inner end of the arc-shaped segment 40 is integrated with the outer end of the straight segment 43. The inner end of the straight segment 43 is fixed to the slide 44 of the double-headed synchronous cylinder 39 through a claw seat 42.

[0143] Specifically, the two claws 6 are located on opposite sides of the upper stocking tube 4, and can clamp the stocking 7 from the same height. That is, the stocking 7 is clamped from the same height on both opposite sides, resulting in a good fixing effect. The claw drive assembly 8 is used to drive the claws 6 to move towards or away from the upper stocking tube 4, so as to achieve the effect of clamping and releasing the stocking 7. The claw drive assembly 8 is realized by a double-headed synchronous cylinder 39, and the two claws 6 are respectively set on the two output sliding ends of the cylinder, ensuring that the movement of the two claws 6 is synchronized. One end of the straight segment 43 is fixed to the slide table 44 via the claw seat 42, and the other end is connected to the arc segment 40. The two arc segments 40 can be closed to form an approximate semi-circular ring, which is adapted to the shape of the upper stocking tube 4. A clamping body 41 is provided on the inner side of the arc segment 40. The inner side of the clamping body 41 forms the stocking clamping surface. This surface is used to press the stocking body 7 tightly against the outer wall of the upper stocking tube 4. The detachable method makes the clamping body 41 more flexible to install and remove. The clamping body 41 can be selected with an elastic block to prevent damage to the stocking body 7 and also increase the contact area and improve the vertical fixing effect.

[0144] like Figure 5 As shown, as an optimization of the upper negative pressure connection assembly, the upper negative pressure connection assembly includes an upper sock tube guide seat 47 sleeved on the upper end of the upper sock tube 4 and connected to the upper frame 3. An upper guide tube 48 is provided inside the upper sock tube guide seat 47, and an upper negative pressure connector 49 is provided at the upper end of the upper guide tube 48. The upper sock tube 4 can move axially along the upper guide tube 48, and a first sealing ring 50 is provided between the upper guide tube 48 and the upper sock tube 4. The first sealing ring 50 is fixed to the upper guide tube 48 by an annular first sealing ring fixing seat 51. The upper frame 3 includes an upper frame top seat 52 and an upper frame base 53 distributed vertically. The upper frame top seat 52 and the upper frame base 53 are connected to side columns by three upper guide rods 35. A double-headed synchronous cylinder 39 is fixed on the upper frame base 53, and the upper sock tube guide seat 47 is fixed on the upper frame top seat 52.

[0145] Specifically, the upper guide tube 48 is located at the upper end of the upper sock tube guide seat 47, positioning the upper sock tube 4 from the top. The upper sock tube 4 always slides inside the upper guide tube 48. The first sealing ring 50 achieves the seal between the upper sock tube 4 and the upper guide tube 48, ensuring a sealed negative pressure channel between the upper negative pressure connector 49 and the lower end of the upper sock tube 4, which is conducive to smoothly sucking out the sock body 7 through negative pressure.

[0146] In this embodiment, two sock-clamping relief grooves 19 are evenly distributed along the circumference at the upper end of the lower sock sleeve 14. That is, the two sock-clamping relief grooves 19 are located on two opposite sides of the lower sock sleeve 14, which are adapted to the position and clamping direction of the clamping action surface of the claw body 6.

[0147] like Figure 8-10 As shown, as an optimization of the sock-feeding lifting mechanism 15, the sock-feeding lifting mechanism 15 includes a lower synchronous belt 54 disposed on one side of the sock-feeding sleeve 14. One end of the lower synchronous belt 54 is provided with a driven sock-feeding pulley 55 connected to the sock-feeding seat 13, and the other end is provided with a driven sock-feeding pulley 56. The driven sock-feeding pulley 56 is connected to a second rotary driver 58, and the lower synchronous belt 54 is connected to the sock-feeding sleeve 14 through a lower transmission seat 57. The lower synchronous belt 54 is a toothed belt, and the driven sock-feeding pulley 56 and the transmission pulley are toothed pulleys adapted to it. The toothed belt and the toothed pulley mesh and transmit power, resulting in high transmission stability and preventing slippage.

[0148] Specifically, the lower sock sleeve lifting mechanism 15 is driven by the second rotary driver 58. The lower synchronous belt 54 is annular and synchronously connected between the lower sock sleeve driving wheel 56 and the lower sock sleeve driven wheel 55. The lower transmission seat 57 is fixed on the straight section of the lower sock sleeve 14 and the lower synchronous belt 54 to achieve synchronous lifting of the straight section and the lower sock sleeve 14, thus achieving a transmission effect. The toothed belt and the toothed wheel mesh with each other, resulting in high transmission stability and preventing slippage.

[0149] As an optimization of this embodiment, the upper end of the lower sock sleeve 14 passes through the positioning flange 59 at the upper end of the lower sock seat 13, and the lower transmission seat 57 is fixed on the lower end of the lower sock sleeve 14. A guide assembly 60 is provided between the lower transmission seat 57 and the lower sock seat 13, which enables the lower sock sleeve 14 to always move along the axial direction of the positioning flange 59. The guide assembly 60 includes a guide post 61 disposed on one side of the lower sock sleeve 14 and parallel to the central axis of the positioning flange 59. The guide post 61 is fixed on the lower sock seat 13, and the guide post 61 passes through the lower transmission seat 57 and is slidably connected to it. At least one guide groove 62 is provided on the guide post 61, which is axially arranged and distributed circumferentially. A slider 63 is provided in the guide groove 62, and the slider 63 is detachably fixed to the lower transmission seat 57. A timing belt hole 64 is provided through the guide post 61, axially penetrating the guide post 61. One side of the lower timing belt 54 passes through the timing belt hole 64, and the other side of the lower timing belt 54 passes through the timing belt fixing hole 65 of the lower transmission seat 57. Two compression clamps 66 are provided in the timing belt fixing hole 65, respectively located on the inner and outer sides of the belt body of the lower timing belt 54. At least one compression clamp 66 is radially provided with a locking pin 70 that penetrates the lower transmission seat 57. The upper end of the guide post 61 is connected to the guide post 61 seat of the lower sock seat 13. An upper timing belt outlet 67 is opened on the inner side of the upper end of the guide post 61. The lower sock driven wheel 55 is located in the upper timing belt outlet 67. The lower end of the guide post 61 abuts against the C-shaped step 68 of the base of the lower sock seat 13. The base of the lower sock seat 13 is provided with a timing belt lower passage groove 69 connected to the C-shaped step 68. The lower sock driving wheel 56 is located in the timing belt lower passage groove 69.

[0150] Specifically, the positioning flange 59 and the guide assembly 60 horizontally limit the lower stocking sleeve 14, allowing it to move only vertically, thus providing a positioning effect. The lower transmission seat 57 is located on the lower end of the lower stocking sleeve 14 and is adapted to its upward movement. The lower transmission seat 57 is slidably connected to the guide post 61, and the guide post 61 is parallel to the lower stocking sleeve 14, providing a positioning effect. The inner end of the slider 63 on the lower transmission seat 57 slides in the guide groove 62 on the side of the guide post 61, providing a circumferential limiting effect and preventing rotation of the lower transmission seat 57. Furthermore, the slider 63 and the lower transmission seat 57 are detachable and can be easily disassembled and assembled. The detachable fixing can be achieved using bolts. The guide post 61 is tubular in shape. A straight section of the lower synchronous belt 54 is located inside the synchronous belt hole 64, which is compact and improves space utilization. The other side of the lower synchronous belt 54 is provided with a synchronous belt fixing hole 65. Two clamping blocks 66 are clamped on the lower synchronous belt 54 from the front and back. The pressure of the clamping blocks 66 on the inner wall of the synchronous belt fixing hole 65 completely clamps the lower synchronous belt 54. The locking pin 70 passes through the pin hole and the clamping block 66 at the same time, realizing the axial limitation of the clamping block 66 and the lower transmission seat 57. This achieves the effect of fixing and connecting a small section of the lower transmission seat 57 and the lower synchronous belt 54. The fixing is flexible and removable, and easy to disassemble and assemble. The upper timing belt outlet 67 is used for the bending section at the upper end of the lower timing belt 54 to pass through, the lower timing belt groove 69 is used for the bending section at the lower end, and the C-shaped step 68 is used to support the guide post 61 upward. The opening inside it is connected to the timing belt hole 64. The shape of the opening is adapted to the lower sock-cleaning drive wheel 56, so that the lower sock-cleaning drive wheel 56 can be installed or removed from it.

[0151] As an optimization of the lower negative pressure connection assembly, the lower negative pressure connection assembly 16 includes a lower guide tube 107 disposed in the lower sock seat 13, the lower end of the lower sock sleeve 14 is disposed in the lower guide tube 107 and is axially connected to it, a second sealing ring 108 is provided between the lower guide tube 107 and the lower sock sleeve 14, the second sealing ring 108 is disposed in the second sealing ring groove 109 and fixed by the annular second sealing ring seat 110, and a lower negative pressure connector 111 is provided on the lower end of the lower guide tube 107.

[0152] Specifically, the lower sock tube 14 is slidably connected to the lower guide tube 107 in a sealed manner. Under the premise of meeting the requirements of vertical lifting, a negative pressure channel is formed between the lower negative pressure connector 111 and the upper end of the lower sock tube, ensuring that the upper end of the lower sock tube 14 maintains negative pressure to smoothly suck up the sock body. The second sealing ring 108 is locked in the second sealing ring groove 109, which is stable in positioning and easy to disassemble and assemble.

[0153] like Figure 8As shown, a thread unwinding disc 77 is fitted on the upper end of the lower stocking sleeve 14. The thread unwinding disc 77 is connected to the linear actuator 79 through two parallel push rods 78. The push rods 78 are parallel to the lower stocking sleeve 14. The upper ends of the two push rods 78 are located at the bottom of the thread unwinding disc 77, and the lower ends are connected to the linear actuator 79 through an arc-shaped linkage seat 80.

[0154] Specifically, the thread unloading disc 77 is used to transfer the thread ends of the sock body on the transfer disc to the transfer seam head. The thread unloading disc 77 is provided with lifting driving force through the linear actuator 79 and is transmitted through the push rod 78. There are two push rods 78 to ensure good and stable transmission effect. The two push rods 78 are connected to one linear actuator 79 through the arc-shaped linkage seat 80, which reduces the driving force cost and ensures the synchronicity of the lifting of the two push rods 78.

[0155] like Figure 19 , 20 As shown, the upper sock module 2 has a sock-inserting driver 81 on its side. The outer end of the sock-inserting shaft 82 of the sock-inserting driver 81 is provided with at least one rolling element 83, which can reduce the coefficient of friction when the sock body 7 is in contact with the sock body 7 when the sock-inserting shaft 82 pushes the sock body 7. The rolling element 83 is connected to the sock-inserting shaft 82 through a rolling element frame 85. The rolling element frame 85 is U-shaped, and a pin 101 is fixed on the rolling element frame 85. The rolling element 83 is rotatably connected to the pin 101. The outer ends of all the sock-inserting shafts 82 are fixed on the positioning plate 102, and the positioning plate 102 is connected to the rolling element frame 85 by several bolts.

[0156] Specifically, the auxiliary sock-stuffing assembly is used to assist in the negative pressure capture of the sock body 7 in the lower sock sleeve 14. Specifically, the sock-stuffing driver 81 drives the sock-stuffing shaft 82 to extend and retract to push the top of the sock into the lower sock sleeve 14. A rolling element 83 is provided at the end of the sock-stuffing shaft 82, which converts the sliding friction between the sock-stuffing shaft 82 and the sock body 7 into rolling friction. On the one hand, this effectively avoids scratching the sock body 7, and on the other hand, it reduces resistance, which is conducive to pushing the sock body 7 into the lower sock sleeve 14 more smoothly. A pin is provided on the rolling element frame 85, and the pin passes through the rolling element 83 and rotates to connect with it, which is convenient for disassembly and assembly. The sock-stuffing driver 81 is a linear driver, which directly realizes the lifting and lowering drive of the rolling element 83 through the extension and retraction of its output end, and the structure is simple. The rolling element frame 85 is a U-shaped structure with the opening facing downwards. A rolling element 83 is installed inside the opening. The rolling element 83 is rotatably connected by a pin 101, which makes it easy to assemble and disassemble. The outer ends of the sock-like shafts 82 are all fixed to the positioning plate 102. That is, all the sock-like shafts 82 are fixed as a whole by the positioning plate 102, which is conducive to the synchronous lifting and lowering of the sock-like shafts 82. The positioning plate 102 is connected to the rolling element frame 85 by bolts, which has flexible disassembly.

[0157] As an optimization of this embodiment, the rolling element holder 85 is U-shaped and has a rolling cavity 120. A rolling element 83 is installed inside the rolling cavity 120, and the rolling element 83 extends to the outside through a ball outlet 121 of the rolling cavity 120. The diameter of the ball outlet 121 is smaller than the maximum outer diameter of the rolling element 83. Preferably, the rolling element 83 is cylindrical, and two are symmetrically arranged, sharing the rolling element holder 85.

[0158] Specifically, the rolling element 83 is located inside the rolling cavity 120 and is rotatably connected to the inner wall of the rolling cavity 120. The lower half of the rolling element 83 extends downward through the ball bearing outlet 121 to make direct contact with the sock body, reducing friction between the rolling element and the sock body, allowing the sock body to be pushed more smoothly into the lower sock leg 14. Two rolling elements 83 are provided, which helps to increase the contact area with the sock body and improve the pushing effect.

[0159] Furthermore, the sock-like actuator 81 includes a double-guide-rod cylinder 122. The inner ends of two sock-like shafts 82 are connected to the pistons of the double-guide-rod cylinder 122, and the two sock-like shafts 82 are parallel to each other. The outer ends of the sock-like shafts 82 are connected to the rolling element frame 85. The central axis of the sock-like shafts 82 is perpendicular to the ground. The outer ends of the two sock-like shafts 82 are fixed on the positioning plate 102, and the positioning plate 102 is connected to the rolling element frame 85 through a detachable structure. The detachable structure includes a first countersunk hole through the positioning plate 102 and a first threaded hole on the horizontal section of the rolling element frame. A first bolt passes through the first countersunk hole, and its lower end engages with the first threaded hole, thereby achieving a stable connection between the rolling element frame 85 and the positioning plate 102. The double-guide-rod cylinder 122 is fixed on a cylinder mounting base 119, and a cylinder height adjustable structure is provided between the cylinder mounting base 119 and the double-guide-rod cylinder 122. The adjustable cylinder height structure may include a second countersunk hole on the cylinder body of the double guide rod cylinder 122, and a strip-shaped through hole that extends vertically through the cylinder mounting base 119. The second bolt passes through the strip-shaped through hole and the second countersunk hole and is tightened with a nut to achieve detachable fixation. The cylinder height can be adjusted by adjusting the fixed position of the second bolt in the strip-shaped through hole.

[0160] Specifically, the dual-guide-rod cylinder 122 is a pneumatic actuator with two guide rods for transmitting linear motion. These guide rods serve as the sock-plug shafts 82, achieving telescoping motion synchronously with the piston. By using the dual-guide-rod cylinder 122, the synchronous movement of the two sock-plug shafts 82 is ensured, resulting in a more even push on the sock body 7. Furthermore, the two parallel sock-plug shafts 82 provide better stability, reducing potential deviations during the pushing process. The upright arrangement of the sock-plug shafts 82 helps ensure stability when pushing the sock body into the lower sock sleeve 14 and effectively transmits force to the sock body. This vertical design also helps save space, making the overall structure more compact. A positioning plate 102 is provided at the outer end of the sock-plug shaft 82. A detachable structure is used to fix the rolling element frame 85 to the positioning plate 102; this fixation is detachable for easy assembly and disassembly. The cylinder mounting base 119 is used to install the double guide rod cylinder, and the cylinder height adjustable structure is used to adjust the height of the double guide rod cylinder 122, which can adapt to socks of different sizes and thicknesses and improve flexibility.

[0161] like Figure 8 As shown, as a further optimization, an auxiliary roller 103 is provided on the sock feeding side of the upper end of the sock body 7 of the sock sleeve 14, and the auxiliary roller 103 is located outside the transfer plate 17. The auxiliary roller 103 is connected to the sock feeding seat 13 through the auxiliary roller seat 104.

[0162] Specifically, the auxiliary roller 103 assists the sock body 7 when it rests against the opening of the lower sock tube 14, awaiting suction. The auxiliary roller 103 is located on the edge of the sock body 7's resting position and can rotate freely, reducing the resistance between the sock body 7 and this edge, thus facilitating the smooth suction of the sock body 7 by the lower sock tube 14. Furthermore, the auxiliary roller 103 is parallel to the bottom surface of the lower sock tube 14, and its axial direction is perpendicular to the direction in which the sock body 7 rests. This ensures that the rotatable direction of the auxiliary roller 103 is parallel to the direction in which the sock body 7 is sucked in, further facilitating the smooth suction of the sock body 7. Example 2

[0163] The working principle of this embodiment is basically the same as that of embodiment 1, except that the upper sock tube lifting mechanism 5 is different.

[0164] In this embodiment, the sock tube lifting mechanism 5 includes a vertically arranged screw with a screw sleeve. The screw is connected to the first rotary driver 32, and the screw sleeve is connected to the sock tube 4 through the upper transmission seat 33.

[0165] Specifically, the sock tube lifting mechanism 5 uses a meshing screw sleeve and screw rod for transmission, resulting in high transmission rigidity and stable transmission.

[0166] Furthermore, the sock lifting mechanism 5 can also be configured with a structure similar to that in embodiment 5 below. Example 3

[0167] The working principle of this embodiment is basically the same as that of embodiment 1, except that the claw body driving component 8 is different.

[0168] Specific implementation examples Figure 6 As shown, the claw drive assembly 8 includes left and right slides 45 fixed to the bottom of the upper frame 3, and the left and right slides 45 are connected to two claws 6. The claw drive assembly 8 is driven by the left and right slides 45, and the claws 6 are respectively fixed on the two slides 44. The movement of each slide 44 drives the claws 6 to move closer to or away from the lower stocking sleeve 14. The slides 44 are specifically driven by a lead screw motor or other means. Example 4

[0169] The working principle of this embodiment is basically the same as that of embodiment 1, except that the claw body driving component 8 is different.

[0170] Specific implementation examples Figure 7 As shown, the claw body drive assembly 8 includes a finger cylinder 46 fixed to the bottom of the upper frame 3, and the finger cylinder 46 is connected to two claw bodies 6. Example 5

[0171] The working principle of this embodiment is basically the same as that of embodiment 1, except that the sock lifting mechanism 15 is different.

[0172] Specific implementation examples Figure 15 , 15a As shown, the lower stocking lifting mechanism 15 includes a third rotary driver 72 fixed to the lower stocking seat 13 via a driver mounting base 71 and located on one side of the lower stocking 14. A lower transmission seat 57 is fixedly mounted on the lower stocking 14. The output end of the third rotary driver 72 is fixedly connected to the lower end of the drive screw 73. The drive screw 73 is parallel to the lower stocking 14, and its upper end is rotatably connected to the mating hole at the upper end of the lower transmission seat 57. The lower transmission seat 57 is provided with a meshing mechanism for the drive screw 73. The lower positioning nut 74 is fitted with a lifting nut; furthermore, a tubular lower positioning rod 75 is vertically provided on the lower sock seat 13. The lower positioning rod 75 passes through the lower positioning hole 76 of the lower transmission seat 57. The lower transmission seat 57 is slidably connected to the outer wall of the lower positioning rod 75. The drive screw 73 is rotatably connected to the lower positioning rod 75. A vertically extending lower guide groove 123 is provided through the side of the lower positioning rod 75. The lifting nut 74 passes through the lower guide groove 123 and the lower transmission seat 57 and can be detachably fixed.

[0173] Specifically, the third rotary driver 72 of the lower sock lifting mechanism 15 provides driving force, which is transmitted through the drive screw 73 and the lifting nut 74 to achieve the effect of driving the lower sock 14 to rise and fall. The third rotary driver 72 is mounted on the lower sock seat 13 with its output end vertically upward via the driver mounting base 71. The drive screw 73 rotates synchronously with this output end. The lower transmission seat 57 is fixedly connected to the lower sock 14, and their lifting and falling are synchronized. The lifting nut 74 is located on the lower transmission seat 57, and the rotation of the drive screw 73 drives the lower transmission seat 57 to rise and fall, thereby driving the lower sock 14 to rise and fall. The transmission effect is good. The docking hole is located on the lower transmission seat. The upper end of 57 is used to position the drive screw 73 from the top, ensuring that the drive screw 73 remains vertical and rotates stably in the circumferential direction. The lower transmission seat 57 is sleeved on the lower positioning rod 75, which has a positioning effect. The drive screw 73 and the lifting nut 74 are set in the lower positioning rod 75 to improve space utilization. The lower guide groove 123 is used to connect the lifting nut 74 and the lower transmission seat 57. The side of the lifting nut 74 is provided with a connector 124 that is slidably connected in the lower guide groove 123. One side of the connector 124 is provided with a slot, and the other side extends laterally. The lifting nut 74 is locked in the slot to form a vertical limit. The extended section is fixed to the lower transmission seat by bolts, which makes disassembly and assembly convenient. Example 6

[0174] The working principle of this embodiment is basically the same as that of embodiment 1, except for the auxiliary sock-stuffing module.

[0175] Specific implementation examples Figure 20-22 As shown, the lower stocking module 10 includes a stocking guide seat 92 that can be mounted on the sewing device 84. At least two parallel and vertically arranged stocking shafts 82 are vertically mounted on the stocking guide seat 92. The stocking shafts 82 are slidably connected to the stocking guide seat 92. The upper end of the stocking shafts 82 is connected to the stocking shaft drive assembly 86. A rolling element 83 is provided on the lower end of the stocking shafts 82 to reduce the coefficient of friction when in contact with the stocking body 7.

[0176] Specifically, two parallel sock-like shafts 82 are guidedly mounted on the sock-like guide seat 92, and the sock-like shaft drive assembly 86 realizes the lifting and lowering drive of the sock-like shafts 82. The multiple sock-like shafts 82 make the connection and transmission between the sock-like shaft drive assembly 86 and the rolling element 83 more stable.

[0177] As an optimization of this embodiment, the sock shaft drive assembly 86 includes a transversely arranged drive shaft 87. One end of the drive shaft 87 is connected to a fourth rotary actuator 88, and the other end is connected to the sock shaft 82 via a gear and rack structure. The gear and rack structure includes a rack 89 disposed on the outer wall of the sock shaft 82. The central axis of the rack 89 is parallel to the central axis of the drive shaft 87. A gear 90 capable of driving the rack 89 to move axially is fixed on the drive shaft 87. The rack 89 includes a plurality of axially evenly distributed tooth grooves 91 disposed on the outer wall of the drive shaft 87. The gear 90 is disposed in a gear seat 93, which is connected to the sock guide seat 92.

[0178] Specifically, the sock shaft drive assembly 86 provides driving force through the fourth rotary actuator 88. The drive shaft 87 and the gear and rack structure are used to complete the transmission between the fourth rotary actuator 88 and the sock shaft 82, converting the rotational driving force of the fourth rotary actuator 88 into a force that drives the sock shaft 82 to extend and retract axially. The rack 89 and the drive shaft 87 are L-shaped and adapted to the setting position of the drive shaft 87 and the sock shaft 82. This setting position is located above, to the side and between the sock guide seat 92. The gear 90 and the drive shaft 87 rotate synchronously, and at the same time, the gear 90 meshes with the rack 89 on the sock shaft 82, realizing the transmission between the drive shaft 87 and the sock shaft 82 through the gear 90 and the rack 89. The rack 89 is specifically composed of toothed grooves 91 directly set on the side of the drive shaft 87, without the need for additional fixed components. It has a simple structure and is an integral structure with high structural strength. The gear seat 93 is set on the guide seat 92 and is used to install the gear 90. As an optimization, the gear seat 93 and the guide seat 92 are connected as one piece, which also has high structural strength.

[0179] As an optimization of this embodiment, the gear seat 93 includes a seat body 94, on which a shaft hole 95 is provided. A plurality of gear mounting holes 96 are distributed axially along the shaft hole 95. Gears 90 are installed in the gear mounting holes 96. The gears 90 pass through a transmission hole 98 and mesh with a rack 89 for transmission. The number of gear mounting holes 96 is equal to the number of the sock-like shaft 82. A drive shaft 87 passes through the gear mounting holes 96 and the shaft hole 95. There are two gear mounting holes 96, located at both ends of the seat body 94. The two ends of the gear mounting holes 96 are closed by sealing plates 97, and the sock-like shaft 82 passes through one of the sealing plates 97. The sock-like shaft 82 passes through the guide hole 99 of the sock-like guide seat 92, and a circumferential positioning structure is provided between the sock-like shaft 82 and the sock-like guide seat 92. The sock guide seat 92 is provided with a connecting plate 100 that can be connected to the seam head base 24. The connecting plate 100 is provided with several first bolt holes. The fourth rotary driver 88 is fixed to the driver mounting base by bolts. The driver mounting base is provided with several second bolt holes.

[0180] Specifically, the base 94 is provided with a shaft hole 95 and a transmission hole 98, and the axial directions of the shaft hole 95 and the transmission hole 98 are perpendicular to each other, matching the position of the drive shaft 87 and the transmission shaft 82. The gear mounting hole 96 is located on the shaft hole 95, and its inner diameter is larger than that of the shaft hole 95. The gear 90 rotates in the gear mounting hole 96, which does not affect the rotation and has a limiting effect. The sealing plate 97 and the base 94 are fixed with bolts, which is convenient for disassembly and assembly. The number of gear mounting holes 96 is adapted to the number of transmission shafts 82, ensuring the transmission connection between the drive shaft 87 and each transmission shaft 82. The gear mounting holes 96 are set at both ends of the shaft hole 95 to facilitate the insertion of the gear 90. The sealing plate 97 is used to cover the gear 90 from the outside to prevent the gear 90 from falling out, which has a limiting effect. The sealing plate 97 and the base 94 are fixed with bolts, which is convenient for disassembly and assembly. At least one sealing plate 97 is provided with a through hole for the transmission shaft 82. The sock-plug shaft 82 is slidably connected in the guide hole 99 and can be vertically raised and lowered. The circumferential positioning structure of the shaft body ensures that the rack 89 of the sock-plug shaft 82 always faces the gear 90, restricts the circumferential rotation of the sock-plug shaft 82, and ensures stable transmission between the drive shaft 87 and the sock-plug shaft 82. Preferably, the circumferential positioning structure of the shaft body includes positioning surfaces provided on the side of the sock-plug shaft 82 and the inner wall of the guide hole 99. The positioning surfaces extend along the axial direction of the guide hole 99 and the sock-plug shaft 82, and the two positioning surfaces are in contact to achieve rotational limitation. The connecting plate 100 is L-shaped, and its bottom surface is fixed to the sewing head base 24 by bolts. A first bolt hole is provided on the side, and a second bolt hole is provided at one end of the driver mounting base. The bolts pass through the first bolt hole and the second bolt hole to fix the driver mounting base. The fourth rotary driver 88 is fixed on the driver mounting base, thereby realizing the detachable installation and fixation of the fourth rotary driver 88 and the sewing head base 24, which is convenient for disassembly and assembly. Example 7

[0181] The working principle of this embodiment is basically the same as that of embodiment 1, except that the rolling element 83 is different.

[0182] In this embodiment, there are two rolling elements 83 arranged symmetrically, and the number of rolling element frames 85 is equal to the number of rolling elements 83, with each rolling element 83 corresponding to a rolling element frame 85.

[0183] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A method for turning socks inside out twice, characterized in that, include: S1. Move the transfer plate (17) to connect the unsewn toe of the sock body (7) with the transfer seam (1); S2. The unfixed part of the sock body (7) is inserted into the lower sock tube (14) of the lower sock module (10), and the sock opening inside the lower sock tube (14) is facing down; S3. The upper sock tube (4) of the upper sock module (2) descends, and the lower end of the upper sock tube (4) passes through the unstitched toe of the sock body (7) and enters into the sock body (7) and at least part of it enters the lower sock tube (14). S4. The unwinding disc (77) rises and cooperates with the transfer disc (17) and the transfer seam (1) to transfer the toe of the sock onto the transfer seam (1); S5. The upper end of the lower sock tube (14) rises to a preset height, which is the opening of the half-tooth ring (25); S6. The upper sock tube (4) is raised and reset, while the lower sock sleeve (14) is raised until the claw body (6) can enter the sock clamping relief groove (19), and then the lower sock sleeve (14) stops moving. S7. When the claw (6) passes through the sock-clamping relief groove (19) and fixes the sock body (7) on the upper sock tube (4), the lower sock tube (14) descends and resets. S8. After the transfer plate (17) is reset, the transfer seam head (1) is turned over and closed, and the seam is sewn through the seam head assembly (105); S9. After suturing is completed, transfer the suture head (1) and suture head assembly (105) to their original positions; S10. The claw body (6) is reset, the height of the upper sock tube (4) is lowered so that the sock body (7) is disengaged from the upper sock tube (4) downwards, and the sock body (7) is sucked out of the upper sock tube (4) upwards by the negative pressure of the upper sock tube (4) to complete the second sock turning; S11. After completing the second sock turning, the height of the upper sock tube (4) is reset and the negative pressure stops; The upper sock module (2) includes an upper frame (3), on which a vertically arranged upper sock tube (4) is provided. The upper sock tube (4) is connected to the upper frame (3) near its upper end through an upper sock tube lifting mechanism (5). At the bottom of the upper frame (3), there are N claws (6) distributed along the circumference of the upper sock tube (4), where N≥1. The claws (6) are connected to a claw drive assembly (8) that can drive the claws (6) to approach the upper sock tube (4) to prevent the sock (7) from sliding down. An upper negative pressure connection assembly (9) is provided at the upper end of the upper sock tube (4). The sock-feeding module (10) is connected to the connecting seat (12) through the horizontal transfer mechanism (11). The sock-feeding module (10) includes a sock-feeding seat (13). A sock-feeding tube (14) with both ends is provided on the sock-feeding seat (13). A sock-feeding tube lifting mechanism (15) is provided between the sock-feeding tube (14) and the sock-feeding seat (13). A lower negative pressure connecting component (16) is provided at the lower end of the sock-feeding tube (14). M sock-feeding grooves (19) distributed circumferentially are provided at the upper end of the sock-feeding tube (14), and M≥1.

2. The method for turning socks inside out according to claim 1, characterized in that, In step S2, the lower sock tube (14) performs negative pressure suction on the sock, and in conjunction with the auxiliary sock-stuffing module (106), the unfixed part of the sock body (7) is stuffed into the lower sock tube (14).

3. The method for turning socks inside out according to claim 1, characterized in that, In step S2, the sock-feeding module (10) moves the sock-feeding tube (14) below the auxiliary sock-feeding module (106) by translation. The rolling body (83) of the auxiliary sock-feeding module (106) descends and rolls into contact with the middle of the sock body (7), so that the sock body (7) is at least partially inserted into the upper end of the sock-feeding tube (14). The sock-feeding is completed with the negative pressure of the sock-feeding tube (14), so that the sock opening inside the sock-feeding tube (14) faces downward. At this time, the height of the rolling element (83) is reset and the negative pressure of the lower sock tube (14) stops; Finally, the lower sock tube (14) is returned to its horizontal position.

4. The method for turning socks inside out according to claim 3, characterized in that, In step S1, before the sock-cleaning module (10) cleans the socks, the height of the sock-cleaning tube (14) is raised so that the upper end is higher than the height of the unwinding reel (77); At the same time, the height of the upper sock tube (4) is lowered so that the height of the upper end of the lower sock tube (14) is close to the height of the lower end of the upper sock tube (4); After the sock-soring module (10) finishes sorting the socks, the height of the sock-soring tube (14) is reset.

5. The method for turning socks inside out according to claim 1, characterized in that, In step S6, the lower sock tube (14) is provided with two sock-clamping relief grooves (19) distributed along the circumference at the upper end. The number of claws (6) and the number of sock-clamping relief grooves (19) are equal and correspond one-to-one. The claws (6) approach the upper sock tube (4) radially through the claw drive assembly (8).

6. The method for turning socks inside out according to claim 1, characterized in that, In step S8, the transfer head (1) first opens the ring lock (26), and then engages the flipped half-tooth ring (25).

7. A secondary sock-turning mechanism, applicable to the secondary sock-turning method according to any one of claims 1-6, comprising transferring the seam allowance (1), characterized in that, A sock-raising module (2) is provided above the transfer seam head (1), and a sock-raising module (10) is provided below the transfer seam head (1). A transfer plate (17) is sleeved on the upper end of the sock-raising tube (14). The transfer plate (17) is connected to the sock-raising seat (13) through a transfer plate lifting drive unit (18). The horizontal transfer mechanism (11) includes a transverse base (20) connected to the connecting seat (12). The transverse base (20) is provided with at least one horizontal guide rod (21). A transverse slider (22) is provided on the horizontal guide rod (21). A transverse drive assembly (23) is provided between the transverse slider (22) and the connecting seat (12). The transverse slider (22) is connected to the lower sock seat (13).

8. The secondary sock-turning mechanism according to claim 7, characterized in that, The sock-fitting module (2) is provided with a sock-fitting driver (81) on its side. The outer end of the sock-fitting shaft (82) of the sock-fitting driver (81) is provided with at least one rolling element (83) that can reduce the coefficient of friction when the sock body (7) is in contact with the sock body (7) when the sock-fitting shaft (82) pushes the sock body (7). The rolling element (83) is connected to the sock-fitting shaft (82) through a rolling element frame (85). Alternatively, the sock-fitting module (2) includes a sock-fitting guide seat (92) that can be mounted on the sewing device (84). The sock-fitting guide seat (92) has at least two parallel and vertically arranged sock-fitting shafts (82) on it. The sock-fitting shafts (82) are slidably connected to the sock-fitting guide seat (92). The upper end of the sock-fitting shafts (82) is connected to the sock-fitting shaft drive assembly (86). The lower end of the sock-fitting shafts (82) is provided with a rolling element (83) for reducing the coefficient of friction when in contact with the sock body (7).

9. The secondary sock-turning mechanism according to claim 7, characterized in that, An auxiliary roller (103) is provided on the feed side of the upper sock body (7) of the sock tube (14), and the auxiliary roller (103) is located outside the transfer plate (17). The auxiliary roller (103) is connected to the sock seat (13) through the auxiliary roller seat (104).

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