Sock turning and discharging device and method of hosiery machine

Abstract

The invention belongs to the technical field of hosiery machines, particularly relates to a sock turning and discharging device and method of a hosiery machine, and solves the problems of complex structure and high equipment cost of a scheme of assisting sock turning and discharging through a plurality of groups of liftable sock clamping components. The sock turning and discharging device of the hosiery machine comprises a machine frame, the machine frame is provided with a supporting structure used for supporting a sock head of a sock leg and a sock turning pipe capable of extending upwards to be inserted into the sock leg to turn over the sock leg, and the machine frame is provided with at least one set of sock clamping structures located above the supporting structure. The upper end of the sock turning pipe penetrates out of the sock leg and then is connected with a negative pressure pipe in a butt joint mode, a butt joint pipe lifting structure is arranged between the negative pressure pipe and the machine frame, and the negative pressure pipe is connected with a negative pressure device. The effects of simplifying the structure and reducing the equipment cost are achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of sock machines, and in particular relates to a sock turning and discharging device and method for a sock machine. Background Art

[0002] A sock knitting machine is a machine used to make socks. It generally weaves a tubular sock tube first, and then sews the toe end of the sock tube to complete the knitting of the sock.

[0003] Before sewing the sock tube, it needs to be turned over. This action is generally achieved by inserting a sock tube into the sock tube and turning it over on the sock tube. After the sewing is completed, the lower end of the sock tube generates negative pressure to suck the sock out to remove the sock. Turning and removing the socks generally require the assistance of a sock clamping structure.

[0004] In the prior art sock machines, multiple sets of vertically movable sock clamping structures are generally required to clamp the sock body on the sock turning tube and push the sock downward, which results in a complex structure and increases equipment cost. Summary of the Invention

[0005] The purpose of the present invention is to address the above-mentioned problems existing in the prior art and to propose a sock turning and discharging device for a sock machine.

[0006] In order to achieve the purpose of the innovation of the present invention, the following technical solutions can be used: A sock turning and discharging device for a sock machine comprises a frame, the frame being provided with a supporting structure for supporting the sock toe of the sock tube, and a sock turning tube capable of extending upward and inserting into the sock tube to turn it over, the frame being provided with at least one group of sock clamping structures located above the supporting structure, the upper end of the sock turning tube being connected to a negative pressure tube after passing through the sock tube, a butt-joint tube lifting structure being provided between the negative pressure tube and the frame, and the negative pressure tube being connected to a negative pressure device.

[0007] The present invention's hosiery handling device is primarily used to flip the stockings to be sewn over, and after sewing, to remove the socks by suction. The main body of the sock is a roughly cylindrical sock body, with a sock opening at one end and the sock opening to be sewn at the other. A support structure on the frame receives the stockings transferred from the transfer device. The support structure is connected to the sock opening, allowing the stocking and opening to hang naturally. The upper end of the sock turning tube draws in the sock body and opening through negative pressure, and during its ascent, it inserts into the stocking. The sock body is then pushed up and turned outward onto the turning tube, achieving flipping. This is prior art. Furthermore, a clamping structure is provided on the side of the support structure. This clamping structure is fixedly arranged and can clamp the sock body to the outer wall of the sock turning tube. Due to the smooth outer wall of the sock turning tube, the sock body slides relative to the sock turning tube but does not slide relative to the clamping structure. A negative pressure tube is provided above the clamping structure and can dock with the upper end of the sock turning tube and rise and fall synchronously. The docking tube lifting structure can drive the tube to rise and fall, thereby driving the sock turning tube above it to rise and fall, achieving axial relative movement between the sock turning tube and the clamping structure. On the one hand, the clamping structure can press the sock body against the sock turning tube during the sock turning tube rising process, limiting the sock opening from further upward movement and preventing the sock turning tube from extending out of the sock tube when it is required to dock with the docking tube due to the sock being too long. On the other hand, the clamping structure can also assist in the removal of the sock after the sock is sewn. The lifting and lowering of the sock turning tube enables relative movement between the sock turning tube and the clamping structure, which is equivalent to achieving the effect of the sock structure pushing the sock body toward the lower end. Therefore, the present invention can achieve the effects of clamping and assisting the removal of the sock using only one fixed clamping structure, reducing structural complexity and driver cost.

[0008] In the sock turning and discharging device of the above-mentioned sock machine, the sock clamping structure includes a sock clamping base fixed to the side of the frame, and a clamping assembly arranged on the sock clamping base. The clamping assembly is located on the side of the sock turning tube and can press the sock tube against the outer wall of the sock turning tube.

[0009] The sock clamping base is fixed on the frame, and the clamping assembly is arranged on the sock clamping base, which can press the sock body against the outer side wall of the sock turning tube to achieve a similar clamping effect.

[0010] In the sock turning and discharging device of the above-mentioned sock machine, the clamping assembly includes two grippers, the mounting ends of the grippers are slidably connected to the sock clamping base, the clamping ends are provided with arc-shaped clamping surfaces, and the two clamping surfaces are symmetrically distributed on two opposite sides of the sock turning tube, and the grippers are connected to the clutch drive assembly.

[0011] The grippers are distributed on both sides of the sock turning tube, and the two clamping surfaces are closed to form a circle coaxial with the sock turning tube to ensure stable clamping. The clutch drive assembly is used to provide driving force for the movement of the grippers, and the movement directions of the two grippers are opposite.

[0012] In the sock turning and discharging device of the above-mentioned sock machine, the clamping end and the sock clamping base are respectively provided with sliding rails and sliding grooves that slide together, and the clutch drive assembly includes a double-headed linear driver arranged on the sock clamping base, and the two output ends of the double-headed linear driver are respectively connected to two grippers, which can drive the two grippers to move towards or away from the axis of the sock turning tube at the same time.

[0013] The clamping end is set on the sock clamping base through a sliding rail groove. Moreover, the cross-sections of the sliding rail and the groove are T-shaped or cross-shaped that match each other, ensuring that the clamping end slides stably on the sock clamping base. The double-headed linear drive can use a double-headed cylinder with two output ends that move synchronously but in opposite directions. The moving direction of the clamping surface is adapted to the radial direction of the sock turning tube to ensure stable clamping.

[0014] In the sock turning and discharging device of the above-mentioned sock machine, a pad is detachably fixed on the clamping end, and the inner side of the pad is formed with the clamping surface; a resistance-increasing structure is provided on the clamping surface, and the resistance-increasing structure includes circumferentially extending grooves or ribs, and / or convex points protruding from the clamping surface; the outer wall of the sock turning tube is smooth.

[0015] The liner is preferably made of rubber, and the detachable fixing method facilitates disassembly and assembly. A resistance-enhancing structure is provided on the clamping surface to ensure that the sock body will not slide relative to the liner after the sock body is clamped. This can be achieved by providing a corresponding concave and convex structure, and the outer wall of the turned-up sock tube is smooth, that is, the friction coefficient of the sock body against the turned-up sock tube is smaller than the friction coefficient against the clamping surface.

[0016] In the sock turning and discharging device of the above-mentioned sock machine, the butt joint tube lifting structure includes a butt joint tube mounting seat arranged on the side of the frame, one end of the butt joint tube mounting seat is slidably connected to the frame, and the other end is fixed with the negative pressure tube, a limiting structure is provided between the negative pressure tube and the sock turning tube, and a butt joint tube lifting drive assembly is provided between the butt joint tube mounting seat and the frame.

[0017] The butt-jointed tube mount is slidably connected to the frame. Specifically, a slide slot can be provided on the side of the frame, and the butt-jointed tube mount slides in the slide slot via a slider. The butt-jointed tube lift drive assembly is used to provide the driving force for the butt-jointed tube mount to rise and fall. Specifically, this can be achieved by, for example, a circumferential drive plus a belt, with the butt-jointed tube mount connected to the belt, or directly through a linear drive. The specific implementation methods are diverse and common knowledge. A limit structure is used to limit the negative pressure tube and the sock-turning tube, ensuring their synchronous movement. This structure can quickly implement or release the limit.

[0018] Furthermore, the negative pressure tube moves up and down between three positions: low, middle, and high. The low position is used for docking the negative pressure tube and the sock turning tube. After docking, the push structure and the sock turning tube are released and lowered to reset. The middle position is used to ensure the smooth sewing of the sock toe. At this time, the lower end of the sock turning tube is located above or flush with the supporting structure and will not interfere with the operation of the sewing device. The high position is used to assist in sock removal. During the process of the negative pressure tube carrying the sock turning tube to the high position, the sock clamping structure moves downward relative to the sock turning tube to achieve the effect of pushing the sock downward. The sock turning tube repeatedly rises and falls between the low and high positions, and cooperates with the timely clamping of the sock clamping structure to achieve an effective auxiliary sock removal effect. Even more, the negative pressure tube moves between the middle and high positions. The middle position is used for docking the sock turning tube, and after the push structure is pushed out, the sewing device sews the sock toe.

[0019] In the sock turning and discharging device of the above-mentioned sock machine, the limiting structure includes a pin shaft arranged on the docking tube mounting seat, and a pin groove arranged on the outer wall of the upper end of the sock turning tube. The pin shaft is connected to the telescopic drive assembly and can move radially to extend and insert into the pin groove for axial limitation.

[0020] The pin is set at the bottom end of the butt-jointed tube mounting seat and can move radially relative to the sock turning tube. The telescopic drive assembly controls the telescopic movement of the pin, and its front end can be extended and inserted into the pin groove on the sock turning tube to achieve circumferential limitation and ensure synchronous lifting and lowering.

[0021] As an optimization, a sealing structure is provided between the sock-turning tube and the negative pressure tube. This sealing structure comprises a sealing ring disposed on the inner sidewall of the lower end of the negative pressure tube. The inner diameter of the sealing ring matches the outer diameter of the sock-turning tube. When the sock-turning tube is docked with the lower end of the negative pressure tube, the sealing ring seals the gap between the negative pressure tube and the sock-turning tube, ensuring that the negative pressure from the negative pressure tube is smoothly applied to the lower end of the sock-turning tube.

[0022] In the sock turning and discharging device of the above-mentioned sock machine, a lower sock sorting seat is provided at the lower part of the frame, the sock turning tube is passed through the lower sock sorting seat and is connected to the pushing structure, the sock turning tube can be extended upward from the lower end of the sock tube and inserted into the sock tube, and the pushing structure can release the engagement with the lower end of the sock turning tube after the upper end of the sock turning tube is connected to the negative pressure tube; The lower sock handling seat is provided with a negative pressure joint capable of docking with the lower end of the sock turning tube, which is used to suck the sock opening and sock body of the sock tube into the sock turning tube. The negative pressure joint is connected to the negative pressure device.

[0023] Before being turned over, the sock-turning tube is located on the lower sock-sorting seat. The lower sock-sorting seat can generally be offset or rotated obliquely so that the upper end of the sock-turning tube can be smoothly sucked into the sock opening. This is the existing technology. The pushing structure is used to control the upward movement of the sock-turning tube to achieve the effect of inserting into the sock barrel and docking with the negative pressure tube.

[0024] In the sock turning and discharging device of the above-mentioned sock machine, a butt-jointed tube limiting portion is provided at the upper end of the frame, a vertically extending limiting hole is provided on the butt-jointed tube limiting portion, the negative pressure tube slides in the limiting hole, and an anti-rotation structure is provided between the limiting hole and the negative pressure tube; The side of the supporting structure is provided with a toe sewing device for sewing the toe of the sock after the sock is turned over; The supporting structure comprises an annular needle disk, the inner diameter of which is larger than the outer diameter of the sock tube.

[0025] The negative pressure tube is inserted into the limiting hole of the butt-joint tube limiting portion, providing radial limiting and positioning effects. The anti-rotation structure is used to achieve circumferential limiting. Specifically, the anti-rotation structure includes an anti-rotation rib and an anti-rotation groove, each extending axially on the inner sidewall of the limiting hole and on the outer sidewall of the butt-joint tube. The anti-rotation rib slides within the anti-rotation groove. The toe-sewing device is used to sew the sock toe. The support structure achieves support by connecting the annular needle disk with the silk thread of the sock toe. The specific structure and distance are common knowledge and will not be elaborated in detail.

[0026] Another object of the present invention is to address the above-mentioned problems in the prior art and to propose a method for turning over and discharging socks from a socks machine.

[0027] In order to achieve the purpose of the innovative present invention, the following technical solutions can be used: A method for turning and discharging socks of a sock machine is applicable to the above-mentioned sock turning and discharging device, comprising the following steps: S1. The toe of the sock is supported on the supporting structure, and the upper end of the sock tube sucks the hanging sock opening and sock body into the sock through negative pressure. S2, turn the sock tube up, insert the sock tube into the sock tube and start turning it over; S3: The sock tube continues to rise, the upper end passes through the sock tube and is inserted into the negative pressure tube at the lower position. The limiting structure locks the sock tube, and the clamping assembly presses the sock body against the outer wall of the sock tube. S4, the negative pressure tube drives the sock turning tube to continue to rise to the middle position, and the lower end of the sock turning tube moves above the supporting structure; S5, the toe sewing device sews the toe of the sock. After the toe sewing is completed, the support structure and the toe sewing device are released from the sock. S6: The clamping assembly clamps the sock body onto the sock tube. The sock tube continues to rise to the high position. The clamping assembly releases the clamping assembly. The lower end of the sock tube maintains negative pressure, and the sock tube descends and moves back to the middle position. S7: Step S6 is not repeated, or is repeated at least once, and the socks are sucked out from the lower end of the sock turning tube, completing the sock ejection process; S8, the sock tube is turned down and reset to the lower sock arrangement seat; In step S3, when the sock tube rises, if the length of the sock tube is greater than the distance between the lower position and the supporting structure, the clamping assembly will act in advance and clamp before the sock opening of the sock tube contacts the negative pressure tube.

[0028] The method of the present invention achieves corresponding sock turning and auxiliary sock removal effects through a fixed sock clamping structure and a sock turning tube that can move up and down, thereby reducing structural complexity and reducing costs. Moreover, the early clamping of the sock clamping structure in step S3 can avoid the problem that the upper end of the sock turning tube has not enough time to wear the long sock barrel, thereby ensuring smooth docking of the sock turning tube and the negative pressure tube.

[0029] For simplification, steps S3 and S4 can also be combined into one, that is, the negative pressure tube is located in the middle position, the flip sock tube rises to the middle position and then docks with the negative pressure tube. After the docking is completed, the pushing structure descends and resets, and at the same time, the lower end of the flip sock tube is also located at a height that does not affect the seam head.

[0030] Compared with the prior art, the present invention has the following advantages: The lifting and lowering action of the sock tube enables the sock body to be clamped on the outer wall of the sock turning tube, and the sock turning tube is driven to rise and fall by the negative pressure tube, thereby realizing the axial relative movement of the sock turning tube and the sock clamping structure. On the one hand, the sock clamping structure can press the sock body on the sock turning tube during the rising process of the sock turning tube, thereby limiting the sock opening from moving upwards, thereby avoiding the problem that the sock tube is too long and has not yet extended from the sock tube when it needs to be docked with the docking tube. On the other hand, the sock clamping structure can also assist in taking out the sock after the seam is completed, and the relative movement of the sock turning tube and the sock clamping structure is realized by the lifting and lowering action of the sock turning tube, which is equivalent to realizing the effect of the sock clamping structure pushing the sock body to the lower end, thereby reducing the structural complexity and the driver cost.

[0031] 2. The double-headed linear actuator can use a double-headed cylinder, which has two output ends that move synchronously but in opposite directions. The moving direction of the clamping surface is adapted to the radial direction of the sock turning tube to ensure stable clamping.

[0032] 3. The liner is preferably made of rubber, and the detachable fixing method facilitates disassembly and assembly. The resistance-enhancing structure is set on the clamping surface to ensure that the sock body will not slide relative to the liner after the sock body is clamped.

[0033] 4. The pin is set at the bottom end of the butt-jointed tube mounting seat, and its front end can be extended and inserted into the pin groove on the flip sock tube to achieve circumferential limitation and ensure synchronous lifting.

[0034] 5. This method achieves the corresponding sock turning and assisted sock removal effects through a fixed sock clamping structure and a sock turning tube that can move up and down, reducing structural complexity and costs. Moreover, the early clamping of the sock clamping structure in step S3 can avoid the problem of the upper end of the sock turning tube not having enough time to wear the long sock, ensuring the smooth connection between the sock turning tube and the negative pressure tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall structure provided by the present invention; Figure 2 It is a structural schematic diagram of the socks clip structure provided by the present invention; Figure 3 It is an enlarged schematic diagram of the butt-joint pipe lifting structure and the limiting structure provided by the present invention; Figure 4 It is a schematic diagram showing the negative pressure tube provided by the present invention being docked with the sock-turning tube and being in a neutral position.

[0036] In the figure, the frame 1, the supporting structure 2, the sock-turning tube 3, the sock-clamping structure 4, the negative pressure tube 5, the butt joint tube lifting structure 6, the sock-clamping base 7, the clamping assembly 8, the gripper 9, the mounting end 10, the clamping end 11, the clamping surface 12, the clutch drive assembly 13, the double-headed linear drive 14, the gasket 15, the resistance-increasing structure 16, the groove 17, the butt joint tube mounting seat 18, the limiting structure 19, the butt joint tube lifting drive assembly 20, the pin shaft 21, the pin groove 22, the sealing structure 24, the sealing ring 25, the butt joint tube limiting part 26, the limiting hole 27, and the anti-rotation structure 28. DETAILED DESCRIPTION

[0037] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0038] Specific implementation examples Figure 1-Figure 4 As shown, the sock turning and discharging device of the sock machine includes a frame 1, on which is provided a supporting structure 2 for supporting the sock toe of the sock tube, and a sock turning tube 3 that can extend upward and insert into the sock tube to turn it over. The frame 1 is provided with a group of sock clamping structures 4 located above the supporting structure 2. The upper end of the sock turning tube 3 passes through the sock tube and is docked with a negative pressure tube 5. A docking tube lifting structure 6 is provided between the negative pressure tube 5 and the frame 1, and the negative pressure tube 5 is connected to the negative pressure device.

[0039] The lifting action of the turning sock tube 3 is used to realize the relative movement of the turning sock tube 3 and the clamping structure 4, which is equivalent to realizing the effect of the clamping structure 4 pushing the sock body to the lower end.

[0040] like Figure 1 、 Figure 2 As shown, the sock clamping structure 4 includes a sock clamping base 7 fixed to the side of the frame 1, and a clamping assembly 8 arranged on the sock clamping base 7. The clamping assembly 8 is located on the side of the sock turning tube 3 and can press the sock tube against the outer wall of the sock turning tube 3. The clamping assembly 8 includes two grippers 9. The mounting end 10 of the gripper 9 is slidably connected to the sock clamping base 7. The clamping end 11 is provided with an arc-shaped clamping surface 12. The two clamping surfaces 12 are symmetrically distributed on two opposite sides of the sock turning tube 3. The grippers 9 are connected to a clutch drive assembly 13. The clamping end 11 and the sock clamping base 7 are respectively provided with sliding rails and sliding grooves that slide together. The clutch drive assembly 13 includes a double-headed linear drive 14 arranged on the sock clamping base 7. The two output ends of the double-headed linear drive 14 are respectively connected to the two grippers 9, which can drive the two grippers 9 to move towards or away from the axis of the sock turning tube 3 at the same time. A liner 15 is detachably fixed to the clamping end 11 , and a clamping surface 12 is formed on the inner side of the liner 15 ; a resistance-increasing structure 16 is provided on the clamping surface 12 , and the resistance-increasing structure 16 includes a circumferentially extending groove 17 ; the outer wall of the turned sock tube 3 is smooth.

[0041] Specifically, the sock clamping base 7 is fixed to the frame 1, and the clamping assembly 8 is arranged on the sock clamping base 7, which can press the sock body against the outer wall of the sock turning tube 3 to achieve a similar clamping effect. The grippers 9 are distributed on both sides of the sock turning tube 3, and the two clamping surfaces 12 are combined to form a circle coaxial with the sock turning tube 3 to ensure stable clamping. The clutch drive assembly 13 is used to provide the driving force for the movement of the grippers 9, and the movement directions of the two grippers 9 are opposite. The clamping end 11 is set on the sock clamping base 7 through a slide rail groove. Moreover, the cross-section of the slide rail and the groove is a matching T-shape, which ensures that the clamping end 11 slides stably on the sock clamping base 7. The double-headed linear drive 14 can use a double-headed cylinder with two output ends that move synchronously but in opposite directions. The moving direction of the clamping surface 12 is adapted to the radial direction of the sock turning tube 3 to ensure stable clamping. The pad 15 is made of rubber and is detachably fixed, which facilitates assembly and disassembly. A resistance-enhancing structure 16 is provided on the clamping surface 12 to ensure that the sock body will not slide relative to the pad 15 after the sock body is clamped. This can be achieved by providing a corresponding concave and convex structure, and the outer wall of the turned-up sock tube 3 is smooth, that is, the friction coefficient of the sock body against the turned-up sock tube 3 is smaller than the friction coefficient against the clamping surface 12.

[0042] like Figure 1 、 3 As shown in Figures 4 and 5, the butt-joint tube lifting structure 6 includes a butt-joint tube mounting base 18 disposed on the side of the frame 1. One end of the butt-joint tube mounting base 18 is slidably connected to the frame 1, and the other end is fixed with the negative pressure tube 5. A limiting structure 19 is provided between the negative pressure tube 5 and the sock-turning tube 3. A butt-joint tube lifting drive assembly 20 is provided between the butt-joint tube mounting base 18 and the frame 1. The limiting structure 19 includes a pin 21 disposed on the butt-joint tube mounting base 18 and a pin slot 22 disposed on the outer side wall of the upper end of the sock-turning tube 3. The pin 21 is connected to the telescopic drive assembly and can move radially and telescopically to extend and insert into the pin slot 22 for axial limitation.

[0043] Specifically, the butt-joint tube mounting base 18 is slidably connected to the frame 1. Specifically, a slide groove can be provided on the side of the frame 1. The butt-joint tube mounting base 18 slides in the slide groove via a slider. The butt-joint tube lifting drive assembly 20 is used to provide the driving force for the butt-joint tube mounting base 18 to rise and fall. Specifically, it is directly driven by a cylinder. The limiting structure 19 is used to limit the negative pressure tube 5 and the sock turning tube 3, ensuring the synchronization of their movement. This structure can quickly realize or release the limit. The pin 21 is provided at the bottom end of the butt-joint tube mounting base 18 and can move radially relative to the sock turning tube 3. The telescopic drive assembly controls the telescopic movement of the pin 21. Its front end can be extended and inserted into the pin groove 22 on the sock turning tube 3 to realize circumferential limit and ensure synchronous lifting and lowering.

[0044] In this embodiment, the negative pressure tube 5 moves up and down between three positions: low, middle and high. The low position is used for the docking of the negative pressure tube 5 and the sock-turning tube 3. After the docking is completed, the pushing structure is released from the sock-turning tube 3 and drops down to reset; the middle position is used to ensure the smooth sewing of the sock toe. At this time, the lower end of the sock-turning tube 3 is located above or flush with the supporting structure 2 and will not interfere with the operation of the sewing device; the high position is used to assist in sock removal. In the process of the negative pressure tube 5 moving the sock-turning tube 3 to the high position, the sock clamping structure 4 moves downward relative to the sock-turning tube 3 to achieve the effect of pushing the socks downward. The sock-turning tube 3 repeatedly rises and falls between the low position and the high position, and cooperates with the timely clamping of the sock clamping structure 4 to achieve an effective auxiliary sock removal effect.

[0045] As an optimization of this embodiment, a sealing structure 24 is further provided between the sock-turning tube 3 and the negative pressure tube 5. The sealing structure 24 includes a sealing ring 25 disposed on the inner sidewall of the lower end of the negative pressure tube 5. The inner diameter of the sealing ring 25 is adapted to the outer diameter of the sock-turning tube 3. When the sock-turning tube 3 is docked with the lower end of the negative pressure tube 5, the sealing ring 25 seals the gap between the negative pressure tube 5 and the sock-turning tube 3, ensuring that the negative pressure of the negative pressure tube 5 is smoothly applied to the lower end of the sock-turning tube 3.

[0046] In this embodiment, a lower sock-handling seat is provided at the bottom of the frame 1. A sock-turning tube 3 is inserted into the lower sock-handling seat and connected to a push mechanism. The sock-turning tube 3 can extend upward from the lower end of the sock tube and be inserted into the sock tube. The push mechanism can release the engagement with the lower end of the sock-turning tube 3 after the upper end of the sock-turning tube 3 is docked and connected to the negative pressure tube 5. The lower sock-handling seat is provided with a negative pressure connector that can dock with the lower end of the sock-turning tube 3 and is used to draw the sock opening and body of the sock tube into the sock-turning tube 3. The negative pressure connector is connected to the negative pressure device. A docking tube stopper 26 is provided at the upper end of the frame 1. The docking tube stopper 26 is provided with a vertically extending stopper hole 27. The negative pressure tube 5 slides in the stopper hole 27. An anti-rotation structure 28 is provided between the stopper hole 27 and the negative pressure tube 5. A sew-up device is provided on the side of the support structure 2 for sewing the sock toe after the sock tube is turned over. The support structure 2 includes an annular needle disk, the inner diameter of which is larger than the outer diameter of the sock-turning tube 3.

[0047] Specifically, the sock turning tube 3 is positioned on the lower sock handling seat before turning over. The lower sock handling seat can generally be tilted or rotated to allow the upper end of the sock turning tube 3 to be smoothly sucked into the sock opening. The pushing structure is used to control the upward movement of the sock turning tube 3, thereby achieving the effect of inserting the sock into the sock barrel and docking with the negative pressure tube 5. The negative pressure tube 5 is inserted into the limiting hole 27 of the docking tube limiting portion 26, providing radial limiting and positioning effects. The anti-rotation structure 28 is used to achieve circumferential limiting. Specifically, the anti-rotation structure 28 includes an anti-rotation rib and an anti-rotation groove respectively extending axially on the inner side wall of the limiting hole 27 and on the outer side wall of the docking tube. The anti-rotation rib slides within the anti-rotation groove.

[0048] For illustration, since the specific structures of the lower sock-sorting seat, the supporting structure and the toe-sewing device are prior art, they are all specifically shown in the accompanying drawings.

[0049] In this embodiment, the sock turning and discharging method of the sock machine includes the following steps: S1, the sock toe is supported on the supporting structure 2, and the upper end of the sock tube 3 sucks the hanging sock opening and sock body into the sock through negative pressure; S2, the sock turning tube 3 rises, inserts into the sock tube and starts turning over; S3, the sock turning tube 3 continues to rise, the upper end passes through the sock tube and is inserted into the negative pressure tube 5 at the lower position, the limiting structure 19 locks the sock turning tube 3, and the clamping assembly 8 presses the sock body against the outer wall of the sock turning tube 3; S4, the negative pressure tube 5 drives the sock turning tube 3 to continue to rise to the middle position, and the lower end of the sock turning tube 3 moves to above the supporting structure 2; S5, the toe sewing device sews the toe of the sock. After the toe sewing is completed, the support structure 2 and the toe sewing device are released from the sock. S6: The clamping assembly 8 clamps the sock body onto the sock turning tube 3. The sock turning tube 3 continues to rise to the high position. The clamping assembly 8 releases the clamping assembly. The lower end of the sock turning tube 3 maintains negative pressure, and the sock turning tube 3 moves downward and returns to the middle position. S7, repeat step S6 at least once, the socks are sucked out from the lower end of the sock turning tube 3, and the socks are finished; S8, the sock tube 3 is lowered and reset to the lower sock arrangement seat.

[0050] Furthermore, in step S3 , when the sock tube 3 rises, if the length of the sock is greater than the distance between the lower position and the supporting structure 2 , the clamping assembly 8 will act in advance and clamp before the sock opening of the sock contacts the negative pressure tube 5 .

[0051] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

Claims

1. A sock turning and discharging device for a sock machine, comprising a frame (1), the frame (1) being provided with a support structure (2) for supporting the sock toe of the sock tube, and a sock turning tube (3) capable of extending upward and being inserted into the sock tube to turn the sock over, characterized in that: The frame (1) is provided with at least one set of sock clamping structures (4) located above the supporting structure (2); the upper end of the sock turning tube (3) passes through the sock barrel and is connected to the negative pressure tube (5); a butt-joint tube lifting structure (6) is provided between the negative pressure tube (5) and the frame (1); and the negative pressure tube (5) is connected to the negative pressure device.

2. The sock turning and discharging device of the sock machine according to claim 1, characterized in that: The sock clamping structure (4) comprises a sock clamping base (7) fixed to the side of the frame (1), and a clamping assembly (8) arranged on the sock clamping base (7). The clamping assembly (8) is located on the side of the sock turning tube (3) and can press the sock tube onto the outer wall of the sock turning tube (3).

3. The sock turning and discharging device of the sock machine according to claim 2, characterized in that: The clamping assembly (8) includes two grippers (9), the mounting end (10) of the grippers (9) is slidably connected to the sock clamping base (7), the clamping end (11) is provided with an arc-shaped clamping surface (12), and the two clamping surfaces (12) are symmetrically distributed on two opposite sides of the sock turning tube (3), and the grippers (9) are connected to the clutch drive assembly (13).

4. The sock turning and discharging device of the sock machine according to claim 3, characterized in that: The clamping end (11) and the sock clamping base (7) are respectively provided with a sliding rail and a sliding groove for sliding cooperation. The clutch drive assembly (13) includes a double-headed linear driver (14) arranged on the sock clamping base. The two output ends of the double-headed linear driver (14) are respectively connected to the two grippers (9), and can drive the two grippers (9) to move towards or away from the axis of the sock turning tube (3) at the same time.

5. The sock turning and discharging device of the sock machine according to claim 3, characterized in that: A liner (15) is detachably fixed to the clamping end (11), and the inner side of the liner (15) is formed with the clamping surface (12); The clamping surface (12) is provided with a resistance-increasing structure (16), and the resistance-increasing structure (16) includes circumferentially extending grooves (17) or ribs, and / or convex points protruding from the clamping surface; The outer side wall of the turned sock tube (3) is smooth.

6. The sock turning and discharging device of a sock machine according to claim 1, characterized in that: The butt-joint pipe lifting structure (6) includes a butt-joint pipe mounting seat (18) arranged on the side of the frame (1), one end of the butt-joint pipe mounting seat (18) is slidably connected to the frame (1), and the other end is fixed with the negative pressure pipe (5), a limiting structure (19) is provided between the negative pressure pipe (5) and the sock turning pipe (3), and a butt-joint pipe lifting drive assembly (20) is provided between the butt-joint pipe mounting seat (18) and the frame (1).

7. The sock turning and discharging device of the sock machine according to claim 6, characterized in that: The limiting structure (19) includes a pin shaft (21) provided on the butt-jointed tube mounting seat (18), and a pin groove (22) provided on the outer side wall of the upper end of the sock-turning tube (3). The pin shaft (21) is connected to the telescopic drive assembly and can move radially to extend and insert into the pin groove (22) for axial limiting.

8. The sock turning and discharging device of a sock machine according to claim 1, characterized in that: The lower part of the frame (1) is provided with a lower sock-sorting seat, the sock-turning tube is passed through the lower sock-sorting seat and is connected to the pushing structure, the sock-turning tube (3) can be extended upward from the lower end of the sock tube and inserted into the sock tube (), and the pushing structure can release the cooperation with the lower end of the sock-turning tube (3) after the upper end of the sock-turning tube (3) is connected to the negative pressure tube (5); The lower sock handling seat is provided with a negative pressure joint capable of docking with the lower end of the sock turning tube (3) for sucking the sock opening and sock body of the sock tube into the sock turning tube (3); the negative pressure joint is connected to the negative pressure device.

9. The sock turning and discharging device of a sock machine according to claim 1, characterized in that: The upper end of the frame (1) is provided with a butt-jointed pipe limiting portion (26), the butt-jointed pipe limiting portion (26) is provided with a limiting hole (27) extending vertically, the negative pressure pipe (5) slides in the limiting hole (27), and an anti-rotation structure (28) is provided between the limiting hole (27) and the negative pressure pipe (5); The supporting structure (2) is provided with a toe sewing device on the side thereof, for sewing the toe of the sock after the sock is turned over; The supporting structure (2) comprises an annular needle disk, the inner diameter of which is larger than the outer diameter of the sock tube.

10. A method for turning and discharging socks from a sock machine, applicable to the sock turning and discharging device according to any one of claims 1 to 9, comprising the following steps: S1. The toe of the sock is supported on the supporting structure, and the upper end of the sock tube sucks the hanging sock opening and sock body into the sock through negative pressure. S2, turn the sock tube up, insert the sock tube into the sock tube and start turning it over; S3: The sock tube continues to rise, the upper end passes through the sock tube and is inserted into the negative pressure tube at the lower position. The limiting structure locks the sock tube, and the clamping assembly presses the sock body against the outer wall of the sock tube. S4, the negative pressure tube drives the sock turning tube to continue to rise to the middle position, and the lower end of the sock turning tube moves above the supporting structure; S5, the toe sewing device sews the toe of the sock. After the toe sewing is completed, the support structure and the toe sewing device are released from the sock. S6: The clamping assembly clamps the sock body onto the sock tube. The sock tube continues to rise to the high position. The clamping assembly releases the clamping assembly. The lower end of the sock tube maintains negative pressure, and the sock tube descends and moves back to the middle position. S7: Step S6 is not repeated, or is repeated at least once, and the socks are sucked out from the lower end of the sock turning tube, completing the sock ejection process; S8, the sock tube is turned down and reset to the lower sock arrangement seat; In step S3, when the sock tube rises, if the length of the sock tube is greater than the distance between the lower position and the supporting structure, the clamping assembly will act in advance and clamp before the sock opening of the sock tube contacts the negative pressure tube.

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