CN116892080A - Pickup device and pickup method for removing and holding a finished fabric from a hosiery machine - Google Patents

Abstract

The invention discloses a pick-up device and a pick-up method for taking down and keeping a woven product from a sock machine, wherein the pick-up device comprises a fixed half-rack and a turnover half-rack, an upper ring and a lower ring are axially arranged, and relative displacement between the upper ring and the lower ring can be axially carried out; the inner wall of the lower ring is provided with a circle of circumferential circular grooves, and the outer wall of the lower ring is provided with a plurality of hooking grooves which are axially extended to the bottom surface of the lower ring; the wire hooking part of the transfer hooks extends out of the wire hooking groove to hook the coil. The invention can directly finish the sewing head on the pick-up device, and simultaneously reliably maintain the finished fabric all the time.

Description

Pickup device and pickup method for removing and holding a finished fabric from a hosiery machine

Technical Field

The invention belongs to the technical field of knitting machinery, and relates to a hosiery machine, in particular to a pickup device and a pickup method for taking down and keeping a knitted product from the hosiery machine after the knitting of socks is completed.

Background

The current development trend of the sock knitting machine is that the knitting and sewing are integrated, namely, the process of sewing the head is automatically completed after the knitting of the sock is completed. For this purpose, it is necessary to take out the finished knitted product, i.e. the sock, from the sock knitting unit and transfer it to the stitch unit, the device for accomplishing this being the pick-up device. When knitting the socks, the socks are mounted on the knitting needles of the needle cylinder through a row of loops which are finally looped, and the loops correspond to the knitting needles one by one; in order to complete the subsequent stitch, it is necessary to ensure the regularity of the individual coils so that each coil can be operated subsequently, so that the coils cannot be disturbed, ensuring that each coil is held individually is a major difficulty in designing the pick-up device.

CN101970739a discloses a pick-up device that can accomplish the above object, comprising an annular pick-up body (11) supporting a pick-up element (29), said pick-up element (29) being slidable in a radial direction with respect to said pick-up body (11), said pick-up body (11) being coaxially arranged around a needle cylinder (121) of a circular knitting machine (100) for hosiery or the like, such that each of said pick-up elements (29) faces laterally a needle (123) of said machine (100); actuation means arranged to act on said pick-up elements (29) to move them towards or away from the axis (11 a) of said pick-up body (11) so as to engage or disengage each pick-up element (29) with the needle (123) of the machine (100) against which it is facing, each of said pick-up elements (29) being suitable for picking up a loop of knitting held on said needle (123); the end (29 a) of each of the pick-up elements (29) directed towards the axis (11 a) of the pick-up body (11) has a seat (30), the seat (30) being movable with the shank (123 b) of the needle (123) in a region arranged close to a tongue (123 d) of the needle (123) on the opposite side with respect to a needle head (123 c) of the needle (123), the actuation means comprising elastic means (33) and radial thrusters (34), the elastic means (33) acting on the pick-up element (29) to slide the pick-up element towards the axis (11 a) of the pick-up body (11), and the radial thrusters (34) acting on the pick-up element (29) to slide the pick-up element away from the axis (11 a) of the pick-up body (11) against the action of the elastic means (33).

In this technical solution, the pick-up element is perpendicular to the needles, which are oriented vertically and horizontally, viewed in space, and the pick-up device must transfer the knitted sock again to the stitch device in order to complete the stitch. Obviously, this increases the overall cost of the machine on the one hand and reduces the efficiency of the machine on the other hand.

CN105887322a discloses another pickup device, which comprises: a fixed mount; a fixed half-rack fixed below the fixed rack and provided with at least one first functional tooth; a turnover half-rack which is radially opposite to the fixed half-rack and is rotatably connected to the fixed seat frame, at least one second functional tooth is arranged on the turnover half-rack, a needle slot is arranged on the outer surface of the second functional tooth, and the turnover half-rack can be turned relative to the fixed half-rack so as to align the first functional tooth and the second functional tooth; a fixed half-rack coil transfer assembly connected to the fixed mount and the fixed half-rack for transferring coils on the first functional tooth to the second functional tooth after the first functional tooth and the second functional tooth are aligned; and a flip half rack coil release assembly connected to the fixed rack and the flip half rack for releasing the coil from the second functional tooth after the toe has been sewn.

The fixed half-rack and the turnover half-rack of the technical proposal are used as a pickup device and a part of a stitch device at the same time, thereby reducing the times of coil transfer. The disadvantage is that the first and second functional teeth are parallel to the needles and are substantially 180 degrees apart from the needles when the pick-up is completed ⁰ A corner; after it picks up the coil and holds it until the beginning of the stitch, the coil is free of any support for a short period of time, and only by means of an external negative pressure air source, suction is provided to hold the coil, which is however unreliable, and the coil may still slide down under the action of the sock gravity, thus disengaging the functional teeth.

CN1723308A discloses another method and device for joining the edges of tubular knitted articles, this technical solution being the closest prior art of the invention, comprising a movable carriage (300), which movable carriage (300) can be associated with the needle bed (100) of a circular machine and can be moved from said needle bed (100) and closing and/or hooking station (400), said carriage (300) supporting means (25, 26) for the removal of the loops of the last knitted rank, the means (25, 26) comprising means (26) for the removal of one half rank, i.e. half of the loops of said last knitted rank, and means (25) for the removal of the other half rank, and said movable carriage (300) being provided with driving means (22, 23) and transfer means (28) for moving the loops of one half rank onto the means (26) for the removal of the other half rank. The unrecited part of this prior art is also referred to in its original text.

The disadvantage of this solution is that the crown (13) and the ring (15) require a large volume to perform the mounting, driving actions, including a large diameter and thickness. When the upper cover is matched with the hosiery machine due to the large thickness, the upper cover of the hosiery machine is required to be inclined at a large angle, so that enough space is reserved for accommodating the pickup device, the structural strength of the hosiery machine is required to be increased, and the arrangement difficulty of parts on the hosiery machine is increased. The larger diameter makes the pick-up device not directly usable as a sewing station, even after moving the coil of one half row to the device for removing the other half row, the coil still needs to be moved to other parts again to carry out sewing; that is, the pickup device cannot be used as a base station for a joint at the same time.

Disclosure of Invention

The invention aims to provide a pick-up device for taking off and holding a finished fabric from a stocking machine, which can reliably hold the finished fabric and facilitate the sewing operation.

It is a further object of the present invention to provide a pick-up method as described above.

Therefore, the technical scheme adopted by the invention is as follows: pick-up device for removing and holding a finished fabric from a stocking machine, comprising a fixed half-rack and a turning half-rack, which can be radially oriented by 180 ⁰ So that the two are in two states of being tiled into a complete ring shape and being stacked into two half rings; a plurality of transfer teeth are indirectly arranged on the fixed half-tooth rack and the overturning half-tooth rack respectively, and when the two half-tooth racks are overlapped, all the transfer teeth are opposite to each other; the method is characterized in that:

the fixed half-rack and the turnover half-rack are axially provided with an upper half-ring and a lower half-ring, and the upper half-ring and the lower half-ring can be tiled into a complete upper ring and a complete lower ring along with the movement of the turnover half-rack and can also be folded into axially superposed half-rings; the upper ring and the lower ring can be driven by the first driving mechanism to axially and relatively displace; the transfer teeth are arranged on the outer circumference of the upper ring and extend to the outer circumference of the lower ring;

the inner wall of the lower ring is provided with a circle of circumferential circular grooves, and the outer wall of the lower ring is provided with a plurality of hooking grooves which are axially extended to the bottom surface of the lower ring;

the transfer hook is in a frame shape and is provided with a longitudinal edge and two transverse edges, one transverse edge is a driving part, the other transverse edge and the longitudinal edge form an L-shaped thread hooking part, and the joint of the driving part and the thread hooking part is a transfer hook shaft; the transfer hook is arranged in the lower ring, the transfer hook shaft is arranged in the circumferential circular groove, the driving part faces the circle center direction of the lower ring, and the wire hooking part extends out of the wire hooking groove;

the device also comprises a second driving mechanism which stretches into the lower ring from the upper part and drives the driving part of the transfer hook to move up and down.

The outer circumference of the lower ring is also provided with a plurality of guide grooves which are arranged at intervals with the wire hooking grooves one by one; the position of the guide groove coincides with the extension line of the transfer tooth.

The front end of the transfer tooth is provided with an inner groove facing the center direction of the lower ring and is matched with the head of the knitting needle; the middle part of the transfer tooth is provided with an outer groove facing the reverse direction of the center of the circle of the lower ring.

For easy assembly, the lower ring is formed by combining a main body and a bottom cover, wherein the main body and the bottom cover are respectively provided with a circumferential arc-shaped groove, and the main body and the bottom cover are combined to form an open circumferential circular groove.

The second driving mechanism is an annular pressing block, is arranged in the lower ring and is fixed with the driving part of the transfer hook, and the annular pressing block extends out of the lower ring through a connecting rod.

In order to achieve the second object, the technical scheme adopted is as follows:

the picking method for taking down and keeping the knitted product from the sock machine uses the device, and after the sock is knitted, the picking device is integrally moved above the needle cylinder of the sock machine, so that the knitting needles of the transferring teeth, the guiding grooves and the needle cylinder are in one-to-one correspondence and are on the same straight line; the front end of the transfer tooth is matched with the needle head of the knitting needle; at the moment, the last line of the coil of the sock is hooked on the needle head of the knitting needle, the fixed half-rack and the turnover half-rack are in complete annular shapes, and the upper ring and the lower ring are in complete annular shapes;

the second driving mechanism drives the driving part of the transfer hook to enable the transfer hook to rotate around the transfer hook shaft, and the thread hooking part of the transfer hook swings relative to the axial direction of the lower ring to enable the thread hooking part to form a larger angle with the axial direction; simultaneously, the first driving mechanism drives the lower ring to descend to a position lower than the coil position on the knitting needle;

the second driving mechanism drives the driving part of the transfer hook reversely, so that the transfer hook reversely rotates around the transfer hook shaft, the wire hooking part forms a smaller angle with the axial direction or is parallel to the axial direction, and the coil is held from below;

the pick-up device is lifted up and moved to a set position to take away the woven socks. In this process, the transfer teeth pass through the coil on the one hand, and the hooking portions of the transfer hooks are held outside the coil on the other hand, so that the coil can be held.

When the sock is moved to the set position, the suspended sock is jacked above the pick-up device, and the turnover half rack is turned 180 ⁰ . The positions of the upper ring and the lower ring are reversed for the inverted half-rack, and for convenience of description, the upper ring and the lower ring are still referred to as the original states. At this time, the transfer teeth of the two half racks are in one-to-one correspondence.

The transfer hook is driven by a second driving mechanism for fixing the half-tooth frame, so that the wire hooking part of the transfer hook is opened, and the coil is not contacted any more; meanwhile, the first driving mechanism of the fixed half-rack drives the lower ring to move downwards, so that coils on the transfer teeth of the fixed half-rack are pushed to move downwards and are transferred to the transfer teeth of the corresponding overturning half-rack; i.e. two coils are threaded on each transfer tooth of the turning half-rack. At this time, the coil is still held by the transfer hook of the overturning half-rack.

Since the state that two loops are threaded on one transfer tooth has been reached, the stitching can be performed by the stitching device. The stitching device is in the prior art.

And hanging the sock after sewing on the overturning half rack, after the overturning half rack is turned back to a horizontal state again, releasing the transferring hook by using a second driving mechanism of the overturning half rack, pushing by using a first driving mechanism of the overturning half rack, and unloading the sock to complete the whole process.

As can be seen from the above description, in the process of transferring the loop from the knitting needle to the transfer tooth and thereby taking out the sock to be transferred to another position, the loop is sleeved on the transfer tooth, and the loop is supported by the loop, particularly the hooking portion with the transfer hook below the loop, so that the loop cannot fall down due to the gravity of the sock; and the transfer hooks and the transfer teeth are densely arranged on the outer circumference of the lower ring, if the number of knitting needles is N, the transfer hooks and the transfer teeth are N, namely 2N parts are arranged on the outer circumference, so that the distance between the adjacent transfer hooks and the adjacent transfer teeth is small, and the coil is clamped between the transfer hooks and the transfer teeth in practice, and can be kept from falling off only by friction force.

In the process of overturning the overturning half rack, for the coil on the overturning half rack, the wire hooking part of the transfer hook is always in a holding state, namely friction force is provided for the coil; at the same time, the thread hooking part and the transferring teeth form a closed geometric shape, and no matter which angle is turned, the thread hooking part and the transferring teeth have parts to provide support for the coil. For the coil on the fixed half-rack, the thread hooking part of the transfer hook is in a holding state before overturning in place; the two half racks are turned in place, and the transfer teeth of the two half racks are in one-to-one correspondence, so that the hooking part is not needed to provide support.

It can be seen that the present invention can complete the sewing of the head directly on the pick-up device while maintaining the woven product reliably at all times.

Drawings

Fig. 1 and 2 are general structural schematic diagrams of the present invention, wherein fig. 2 breaks away the main components of the present invention to illustrate them.

Fig. 3 is a schematic view of a rack.

Fig. 4 is a schematic view of the upper ring.

Fig. 5 is a schematic view of the lower ring body.

Fig. 6 is a schematic view of the lower ring bottom cover.

Fig. 7 is a schematic view of a second drive mechanism.

Fig. 8 is a schematic view of a transfer tooth.

Fig. 9 is a schematic view of a transfer hook.

Fig. 10-12 show several mutual positional relationships of the main components of the present invention.

Fig. 13 is a schematic view of the pick-up process of the present invention.

Detailed Description

See the drawings. The device comprises a rack 1, an upper ring 2, a lower ring 3 and an annular pressing block 4, wherein the lower ring 3 is formed by fixing a main body 31 and a bottom cover 32; the annular component is divided into two semi-annular parts, for example, the rack 1 consists of a turnover half rack 1a and a fixed half rack 1b, and the turnover half rack can perform radial turnover by taking a pin hole 11 as an axis and form a complete annular or stacked semi-ring with the fixed half rack. The specific mounting and turning modes of the half-racks are known in the art, and references mentioned in the background section are also mentioned in more detail, and are not repeated here.

The other annular components are equally divided into two semi-annular parts which are respectively arranged on the two semi-racks. Is arranged on the overturning half rack and overturns with the overturning half rack, and is denoted by a suffix a; is mounted stationary on a stationary half-rack, denoted by the suffix b.

The circumferential outer surface of the upper ring 2 is provided with a plurality of axial grooves 21, which are designed for a 200-needle hosiery knitting machine in the embodiment, so that the number of the axial grooves 21 is 200 and are uniformly distributed at 360 ⁰ Is formed on the circumferential surface of the steel sheet.

See fig. 5, 6. For processing and installation convenience, the lower ring is divided into a main body 31 and a bottom cover 32, the angle of fig. 4 is viewed from the side below, it can be seen that a plurality of axial grooves 311 are formed on the circumferential outer surface of the main body 31, the circumferential side surface of the bottom cover 32 is also provided with axial grooves 321, the number of the grooves 311 and the grooves 321 is 200, and the grooves 311 and the grooves 321 are in one-to-one correspondence and in one-to-one correspondence with the grooves 21 to form grooves which are penetrated in the axial direction. Wherein the slot 311 and the slot 321 are collectively referred to as a guide slot.

A transfer hook groove 312 is further formed between every two adjacent guide grooves 311 at the lower part of the circumferential outer surface of the main body 31; a transfer hook groove 322 is also provided between every two adjacent guide grooves 321 at the circumferential side of the bottom cover 32, and extends to the bottom surface of the bottom cover 32. The slots 312 and 322 are also in one-to-one correspondence, collectively referred to as transfer hook slots, and the number is also 200.

The inner wall of the main body 31 has a circumferential groove 313 having an arc-shaped cross section, and the inner wall of the bottom cover 32 also has a circumferential groove 323 having an arc-shaped cross section, and when the main body and the bottom cover are fixed by being spliced, a complete circumferential circular groove is formed; it can be approximately imagined as an annular circular groove for receiving the sealing ring. On the wall of the circumferential groove 313, there is also a straight groove 314 perpendicular to the circumferential direction, the position of which coincides with the transfer hook groove; the circumferential groove of the bottom cover also has a straight groove, which cannot be embodied due to the angular relationship.

A connecting rod 35 is arranged above the main body and can be connected with a piston or a motor and other mechanisms to drive the lower ring 3 to move up and down. The link 35 is referred to as a first drive mechanism.

See fig. 7. The upper part of the annular pressing block 4 is also provided with a connecting rod 45 which can be connected with a piston or a motor and other mechanisms to drive the annular pressing block 4 to move up and down. The annular compact 4 is referred to as a second drive mechanism. The annular pressing block in the embodiment is divided into two parts to be processed and overlapped and fixed, the left 4 a/4 b is overturned and then is spliced with the right 4 a/4 b according to the drawing, so that the complete annular pressing block is obtained, and the side surface of the annular pressing block is provided with a groove 41 extending inwards and can be used for accommodating other parts.

See fig. 8. The transfer tooth 7 comprises a root 71 by means of which the transfer tooth is fixed on the circumferential surface of the upper ring 2; the transfer teeth in this embodiment are 200 and are captured in the grooves 21 of the upper ring and extend into the guide grooves 311, 321. The head 72 of the transfer tooth has an inwardly open inner slot facing the center of the circle of the entire device; the tooth back is also provided with an outer groove 73 which faces the opposite direction of the circle center.

See fig. 9. The transfer hook includes a transfer hook shaft 81, a driving portion 82 and a hooking portion 83, and is fixed as a sheet-like whole. Wherein the hooking portion is L-shaped, and the thickness of the transferring hooking shaft 81 is greater than that of the driving portion and the hooking portion.

The transfer hooks are mounted in the lower ring 3 in such a way that: the transfer hook shaft 81 is arranged in the circumferential grooves 313 and 323, the shape of the transfer hook shaft is matched with the shape of the circumferential grooves, and the transfer hook shaft can rotate in parallel to the radial direction of the device; the circumferential groove is also provided with a straight groove 314, and the transfer hook shaft 81 can be embedded in the straight groove, so that circumferential displacement is not generated. The hook portion 83 of the transfer hook protrudes from the transfer hook grooves 312, 322. The driving part 82 of the transfer hook extends into the groove 41 of the annular pressing block. Thus, when the annular pressing block 4 moves up and down relative to the lower ring 3, the transfer hook is driven to rotate around the transfer hook shaft 81, so that the angle of the hooking portion 83 can be changed.

See fig. 10-12. The set of drawings highlights the positional relationship between the upper ring, the lower ring, the annular press block. In the state of fig. 10, the upper ring 2 and the lower ring 3 are in close contact, and the annular compact 4 is also in a high position. In fig. 11, compared to fig. 10, the lower ring 3 is moved downwards by the first drive mechanism, and it can be seen that there is a large distance between the upper and lower rings. In fig. 12, with respect to fig. 11, the annular pressing block 4 (i.e., the second driving mechanism) moves downward, and the annular pressing block 4 moves from slightly above the circumferential groove 313 to below the circumferential groove 313.

See fig. 13. The group of figures schematically illustrates the process of picking up the socks, it being pointed out that in the figures the transfer teeth 7 and the needles 9 are on the same plane, while the transfer hooks 8 are between the two transfer teeth, i.e. the transfer hooks 8 are not on the same plane of the transfer teeth 7 and the needles 9. After the hosiery knitting machine finishes knitting, the knitted sock is hung on the knitting needle 9 through the last line of the coil 00, at the moment, the pickup device of the embodiment is moved to the upper part of the needle cylinder, and the transfer teeth 7, the guide grooves 311, 321 and the knitting needle 9 are aligned one by one according to the set zero alignment, and are all on the same straight line; the annular pressing block 4 is pressed downwards to open the transfer hook 8, and simultaneously the pick-up device is lowered integrally to enable the head 72 of the transfer tooth 7 to be in contact fit with the head of the knitting needle 9, namely, the state shown in fig. 13 a; the transfer hook 8 continues to be in the open condition, lowering the lower ring 3 by means of the connecting rod 35, while the guide grooves 311, 321 and the needles 9 slide relatively and thereby remain in position until the transfer hook 8 is lower than the loop 00, i.e. the condition shown in fig. 13 b; the annular pressing block 4 is pulled upwards to enable the transfer hook 8 to reversely rotate to return to a closed state, and the wire hooking part is positioned below the coil 00 at the moment, so that a support can be provided, namely, the state shown in fig. 13 c; the transfer hook 8 continues to keep the closed state, and the lower ring 3 rises through the connecting rod 35, and at this time, the wire hooking part of the transfer hook drives the coil 00, and pulls the coil 00 to the transfer teeth 7, namely, the state shown in fig. 13 d; the pick-up device is lifted and moved as a whole, leaving the needle cylinder with the sock.

The above description has in fact completed the picking process of taking and holding the finished fabric from the hosiery machine. To complete the final stitch, the present embodiment also proceeds with the following steps.

After the pickup device moves to a set position with the knitted sock, the suspended sock is propped up above the pickup device, which is a common technical means in the art, and is not described herein. The turning half-rack 1a is then turned 180 with all the half-ring parts mounted thereon ⁰ The method comprises the steps of carrying out a first treatment on the surface of the The transfer teeth 7 of the two half racks are in one-to-one correspondence and the heads are opposite.

Half of the transfer hooks 8 are driven by the semi-annular pressing blocks 4b of the fixed semi-toothed frame, so that the wire hooking parts 83 of the transfer hooks are opened and the transfer hooks are not contacted with the coil any more; meanwhile, the lower half ring 3b is driven to move downwards through the connecting rod 35 of the fixed half rack, so that coils on the transfer teeth of the fixed half rack are pushed to move downwards and are transferred to the other half transfer teeth of the corresponding overturning half rack; i.e. two coils are threaded on each transfer tooth of the turning half-rack. At this time, the coil is still held by the transfer hook of the overturning half-rack.

Since the state that two loops are threaded on one transfer tooth has been reached, the stitching can be performed by the stitching device. The stitching device is the prior art and is not repeated. The external grooves 73 on the transfer teeth make the fitting easier.

After the sock is sewn, the sock is hung on the overturning half rack, after the overturning half rack is turned back to a horizontal state again, a transfer hook is opened by using a semi-annular pressing block 4a of the overturning half rack, the lower semi-ring 3a is pushed by using a connecting rod 35 of the overturning half rack, the sock is dismounted, and the whole process is completed.

Claims (7)

1. Pick-up device for removing and holding a finished fabric from a stocking machine, comprising a fixed half-rack and a turning half-rack, which can be radially oriented by 180 ⁰ So that the two are in two states of being tiled into a complete ring shape and being stacked into two half rings; the fixed half-rack and the turnover half-rack are indirectly provided with a plurality of transfer teeth respectively, when the two half-racks are overlappedAll the transfer teeth are opposite to each other; the method is characterized in that:

the fixed half-rack and the turnover half-rack are axially provided with an upper half-ring and a lower half-ring, and the upper half-ring and the lower half-ring can be tiled into a complete upper ring and a complete lower ring along with the movement of the turnover half-rack and can also be folded into axially superposed half-rings; the upper ring and the lower ring can be driven by the first driving mechanism to axially and relatively displace; the transfer teeth are arranged on the outer circumference of the upper ring and extend to the outer circumference of the lower ring;

the inner wall of the lower ring is provided with a circle of circumferential circular grooves, and the outer wall of the lower ring is provided with a plurality of hooking grooves which are axially extended to the bottom surface of the lower ring;

the transfer hook is in a frame shape and is provided with a longitudinal edge and two transverse edges, one transverse edge is a driving part, the other transverse edge and the longitudinal edge form an L-shaped thread hooking part, and the joint of the driving part and the thread hooking part is a transfer hook shaft; the transfer hook is arranged in the lower ring, the transfer hook shaft is arranged in the circumferential circular groove, the driving part faces the circle center direction of the lower ring, and the wire hooking part extends out of the wire hooking groove;

the device also comprises a second driving mechanism which stretches into the lower ring from the upper part and drives the driving part of the transfer hook to move up and down.

2. Pick-up device for removing and holding a finished fabric from a hosiery machine according to claim 1, characterized in that: the outer circumference of the lower ring is also provided with a plurality of guide grooves which are arranged at intervals with the wire hooking grooves one by one; the position of the guide groove coincides with the extension line of the transfer tooth.

3. Pick-up device for removing and holding a finished fabric from a hosiery machine according to claim 1, characterized in that: the front end of the transfer tooth is provided with an inner groove facing the center direction of the lower ring and is matched with the head of the knitting needle; the middle part of the transfer tooth is provided with an outer groove facing the reverse direction of the center of the circle of the lower ring.

4. Pick-up device for removing and holding a finished fabric from a hosiery machine according to claim 1, characterized in that: the lower ring is formed by combining a main body and a bottom cover, wherein the main body and the bottom cover are respectively provided with a circumferential arc groove, and the main body and the bottom cover are combined to form an open circumferential circular groove.

5. Pick-up device for removing and holding a finished fabric from a hosiery machine according to claim 1, characterized in that: the second driving mechanism is an annular pressing block, is arranged in the lower ring and is fixed with the driving part of the transfer hook, and the annular pressing block extends out of the lower ring through a connecting rod.

6. Pick-up method for removing and holding a finished fabric from a hosiery machine, with a pick-up device according to any of claims 1-5, characterized in that it comprises the following steps:

after the socks are woven, the pick-up device is integrally moved above the needle cylinder of the sock knitting machine, so that the transfer teeth, the guide grooves and the knitting needles of the needle cylinder are in one-to-one correspondence and are on the same straight line; the front end of the transfer tooth is matched with the needle head of the knitting needle; at the moment, the last line of the coil of the sock is hooked on the needle head of the knitting needle, the fixed half-rack and the turnover half-rack are in complete annular shapes, and the upper ring and the lower ring are in complete annular shapes;

the second driving mechanism drives the driving part of the transfer hook to enable the transfer hook to rotate around the transfer hook shaft, and the thread hooking part of the transfer hook swings relative to the axial direction of the lower ring to enable the thread hooking part to form a larger angle with the axial direction; simultaneously, the first driving mechanism drives the lower ring to descend to a position lower than the coil position on the knitting needle;

the second driving mechanism drives the driving part of the transfer hook reversely, so that the transfer hook reversely rotates around the transfer hook shaft, the wire hooking part forms a smaller angle with the axial direction or is parallel to the axial direction, and the coil is held from below;

the pick-up device is lifted up and moved to a set position to take away the woven socks.

7. The method of claim 6, further comprising the step of:

when the pickup device moves to a set position with the sock, the sock is movedThe suspended socks are jacked above the picking device, and the overturning half rack is overturned 180 ⁰ The method comprises the steps of carrying out a first treatment on the surface of the At the moment, the transfer teeth of the two half racks are in one-to-one correspondence;

the transfer hook is driven by a second driving mechanism for fixing the half-tooth frame, so that the wire hooking part of the transfer hook is opened; meanwhile, the first driving mechanism of the fixed half-rack drives the lower ring to move downwards, so that coils on the transfer teeth of the fixed half-rack are pushed to move downwards and are transferred to the transfer teeth of the corresponding overturning half-rack;

stitching with a stitching device;

and hanging the sock after sewing on the overturning half rack, after the overturning half rack is turned back to a horizontal state again, releasing the transferring hook by using a second driving mechanism of the overturning half rack, pushing by using a first driving mechanism of the overturning half rack, and unloading the sock to complete the whole process.