WO2021104143A1

WO2021104143A1 - Fabric pickup and transfer method for circular knitting machinery

Info

Publication number: WO2021104143A1
Application number: PCT/CN2020/130002
Authority: WO
Inventors: 苏建丰; 姚先均
Original assignee: 浙江博睿智能科技有限公司
Priority date: 2019-11-28
Filing date: 2020-11-19
Publication date: 2021-06-03
Also published as: CN112853592A; CN112853592B

Abstract

A fabric pickup and transfer method for a circular knitting machinery, comprising: S1. pressing down, using needle guards (4c), loops of a fabric on hosiery knitting needles (1) for the fabric by a certain distance, wherein each hosiery knitting needle (1) passes through a gap formed between two adjacent needle guards (4c); S2. moving the needle guards (4c) to the loops of the fabric to enable the loops to be clamped in recesses on the needle guards (4c); S3. moving the needle guards (4c) up to drive the loops to move up, so as to drive, by the loops, needle latches of the hosiery knitting needles (1) to turn upward until the needle latches of the hosiery knitting needles (1) abut against the lower edges of transfer needles (4a, 4b); S4. moving the transfer needles (4a, 4b) to enable needle tips of the hosiery knitting needles (1) to be located in transfer slots on the transfer needles; and S5. moving the needle guards (4c) below the loops to drive the loops to move up, so that the needle latches are closed, and the loops are transferred to the transfer needles (4a, 4b). An easier and more effectively fabric hosiery thread transfer method is provided.

Description

Fabric pickup and transfer method for circular knitting machine

Technical field

The present invention relates to fabric transfer technology, and more specifically, to a fabric pick-up transfer method for circular knitting machines.

Background technique

The current circular knitting machine has a complicated structure and cannot realize the automatic process of weaving, picking, transferring, seam butting, sewing, and fabric turning devices. It requires manual intervention, which greatly reduces the efficiency of knitting.

Summary of the invention

Aiming at the problems in the background art, the present invention proposes a pick-up and transfer method for circular knitting machines. The method is used to pick up the fabric on the hooks of the knitting needles by the coordinated work of the transfer needle and the needle guard after the production of the circular knitting machine is finished. In the process of picking up, the air cylinder makes the needle guard move up and down. When the picking is over, the motor drives the screw rod to move up and down to a safe height, and at the same time, the sock tube rises to a certain height and then the lower motor drives the worm gear in the worm gear box to perform lateral transfer to realize the transfer of the fabric. The pick-up and transfer method for a circular knitting machine of the present invention includes:

S1, using the needle guard to press down the loops of the fabric on the hosiery needles of the fabric for a certain distance, wherein the hosiery needle passes through the gap formed by two adjacent needle guards;

S2: Move the needle guard to the loop of the fabric so that the loop is stuck in the recess of the needle guard;

S3: Move the needle guard upward to drive the loop upward, and the loop drives the tongue of the hosiery needle to turn up until the tongue of the hosiery needle abuts against the lower edge of the transfer needle;

S4. Move the transfer needle so that the needle of the hosiery needle is located in the transfer groove of the transfer needle;

S5: Move the needle guard to the bottom of the loop to drive the loop up, so that the needle tongue is closed, and the loop is transferred to the transfer needle.

The beneficial effects of the present invention are as follows: the process of fabric transfer is simplified, the efficiency is provided, and the high efficiency of the transfer is ensured.

Description of the drawings

In order to make it easier to understand the present invention, the present invention will be described in more detail by referring to specific embodiments shown in the accompanying drawings. These drawings only depict typical implementations of the present invention, and should not be considered as limiting the scope of protection of the present invention.

Fig. 1 shows a perspective view of an embodiment of a transfer needle used in the method of the present invention.

Figure 2 shows a perspective view of another embodiment of the transfer needle used in the method of the present invention.

Figure 3 shows a schematic diagram of the transfer needle used in the method of the present invention when in use.

Figure 4 shows a perspective view of another embodiment of the transfer needle used in the method of the present invention.

Fig. 5 shows a perspective view of an embodiment of the needle guard used in the method of the present invention.

Figure 6 shows a perspective view of an embodiment of a slit tooth used in the method of the present invention.

Fig. 7 shows a schematic diagram of an angle of the tooth seat installed by the slit teeth.

Fig. 8 shows a schematic view of another angle of the tooth seat installed by the slit teeth.

Fig. 9 shows another perspective view of the slit tooth used in the method of the present invention.

Fig. 10 shows a partial structural diagram of a slit tooth used in the method of the present invention.

Fig. 11 shows a partial structural diagram of a slit tooth used in the method of the present invention.

Figure 12 shows the positional relationship between the slit teeth, the transfer needle and the needle guard.

Figures 13-29 show schematic diagrams of the working process of the pick-up and transfer of fabric loops of the present invention.

Reference number

Hosiery needle 1, sock turning tube 2, sock support sheet 201, Sinker sheet 201; fabric 3; transfer needle 4a, transfer needle 4b, transfer needle 4h, needle guard 4c, transfer needle body 41, transfer needle protrusion 411 , The transfer part 42, the first bifurcation piece 421, the second bifurcation piece 422, the transfer needle groove 43, the needle guard body 45, the needle guard protrusion 451, the needle guard groove 452, and the needle guard clamp Part 46, first protrusion 461, second protrusion 462, depression 463, needle guard oblique cut part 47; slit teeth 6a, slit teeth 6b, elongated body 61, needle-like part 611, needle-like part groove 6111 , The supporting portion 612, the suture groove 613, the engaging portion 62, the engaging protrusion 621, the upturned portion 622, the fixing groove 623, the pressing plate 6c, the tooth seat 6d, and the tooth seat 6e.

Detailed ways

The embodiments of the present invention are described below with reference to the drawings, in which the same components are denoted by the same reference numerals. In the case of no conflict, the following embodiments and technical features in the embodiments can be combined with each other.

In the method of transferring fabric loops of the present invention, three parts are used, such as the transfer needle shown in Figs. 1 to 4, the needle guard shown in Fig. 5, and the slit teeth shown in Figs. 6-11.

FIG. 1 shows a perspective view of the transfer needle 4a of the present invention. The transfer needle has a transfer needle main body 41, and the head of the transfer needle main body 41 (the end contacting the fabric loop) has a transfer part 42. The transfer needle body 41 is in the shape of a thin and elongated sheet, and the transfer part 42 is curved and deviates from the axis of the transfer needle body 41. Preferably, the transfer part 42 is arc-shaped, tapering from the end of the transfer needle body 41, and the end is pointed. . The tail of the transfer needle body 41 (the end far from the fabric loop) has a transfer needle protrusion 411, which is engaged with the transfer plate of the fabric transfer device, and pushes and pulls the transfer needle protrusion 411 to transfer the transfer needle. The needle moves inward and forward in the radial direction, and can also move up and down to transfer fabric loops.

Fig. 2 shows a perspective view of the transfer needle 4b of the present invention. The difference from the transfer needle 4a is that its shape is symmetrical to the transfer needle 4a. When in use, a pair of

transfer pins

4a and 4b are required to be used together. Specifically, the

transfer pins

4a and 4b are attached to each other. The transfer pin main body 41 is made into a thin sheet, which is also to reduce the volume when the two are attached together, which is more environmentally friendly.

Fig. 3 shows the state diagram of the

transfer pins

4a, 4b when in use. The transfer needle bodies 41 of the

transfer needles

4a, 4b are attached together, and the respective transfer parts 42 form a groove, a transfer needle groove 43, which is used to accommodate the slit teeth of the fabric sewing device, and The function and general structure of the mouth teeth are well known to those skilled in the art and will not be described here.

FIG. 4 shows another embodiment of the transfer needle of the present invention. The difference from the first embodiment is that the transfer needle body 41 has a certain thickness, so that a groove can be opened in the head of the transfer needle body 41, that is, the transfer needle槽43。 Groove 43. The transfer pin groove 43 is also used to accommodate the slit teeth. Preferably, the transfer needle groove 43 is asymmetrical, with a gap at the end of the groove, so that the needle of the hosiery needle 1 can slide into the transfer needle groove 43 more smoothly (see FIG. 6). The tail of the transfer needle body 41 (the end far from the fabric loop) has a transfer needle protrusion 411, which is engaged with the transfer plate of the fabric transfer device, and pushes and pulls the transfer needle protrusion 411 to transfer the transfer needle. The needle moves inward and forward in the radial direction, and can also move up and down to transfer fabric loops.

Figure 5 shows the structure of the needle guard 4c. The needle guard 4c is used in conjunction with the

transfer needles

4a and 4b. The needle guard 4c has a needle guard main body 45, and a needle guard holding portion 46 extends downward from the front end of the needle guard main body 45 (the end contacting the loop of the fabric). The clamping portion 46 has a first protrusion 461 and a second protrusion 462, and a recess 463 is formed therebetween. A needle guard chamfer 47 is formed at the joint between the needle guard main body 45 and the needle guard clamping portion 46. The needle guard clamping portion (46) extends vertically downward from the needle guard chamfered portion (47).

The needle guard main body 45 has a needle guard protrusion 451 on the lower side of the rear end (the end away from the loop of the fabric). The needle guard protrusion 451 is clamped to the transfer plate of the fabric transfer device. Pushing and pulling the needle guard protrusion 451 can move the transfer needle inward and forward in the radial direction, and can also move up and down to perform fabric loops. Transfer.

The lower side of the needle guard body 45 has a plurality of needle guard grooves 452 to be combined with the transfer disc of the fabric transfer device. When in use, the suture needles 4a, 4b are inserted between the two needle guards 4c, and are located in the gap formed by the needle guard clamping portions 46 of the two needle guards.

As shown in FIG. 6, the slit teeth 6a have an elongated body 61 and an engaging portion 62. The engaging portion 62 extends from the upper end of the elongated body 61, and the two combined together form an approximate 7-shape as a whole. The elongated body 61 includes a needle-shaped part 611 at the lower end and a supporting part 612 at the upper end.

Fig. 7 shows a schematic diagram of the slit teeth 6a mounted on the tooth seat 6e. Fig. 8 shows a schematic diagram of the slit teeth 6a mounted on the tooth seat 6d. The tooth seats 6e and 6d form a complete circular tooth seat. The half tooth seat 6d in FIG. 3 can be turned down by 180 degrees, so that the two semicircular tooth seats are perfectly aligned. The overall 7-shaped slit teeth 6a are installed on the tooth seat 6e of the fabric transfer device. Specifically, they are hung on the groove of the tooth seat 6e through the engaging portion 62, and the elongated body 61 is installed in the groove of the tooth seat 6e. Wherein, the supporting portion 612 is completely embedded in the groove of the tooth seat 6e, and only the needle-shaped portion 611 is exposed. Similarly, the slit teeth 6b (described below) are mounted on the tooth seat 6d of the fabric transfer device.

In order to make the slit transfer teeth 6a and the slit teeth 6b be more closely mounted on the tooth seat 6e, the further detailed structure of the slit teeth 6a guarantees the technical effect, which will be described below with reference to FIGS. 1 and 4.

As shown in FIG. 9, the height H of the supporting part 612 matches the height of the tooth seat 6e, so that the supporting part 612 does not expose the tooth seat 6e after installation, and only the needle-shaped part 611 is exposed outside the tooth seat 6e. The width W of the support portion 612 matches the radial depth of the groove of the tooth seat 6e, so that the outer surface of the support portion 612 is flush with the radial outer surface of the tooth seat 6e after installation, and neither sinks nor protrudes. The effect afterwards is shown in Figure 7.

The lower side of the engaging portion 62 has an engaging protrusion 621, and a groove is formed between the engaging protrusion 621 and the supporting portion 612, so that the slit teeth 6a can be tightly hung on the groove of the tooth seat 6e. The upper surface of the engaging portion 62 has a fixing groove 623 to cooperate with the tooth seat 6e, so that the slit tooth 6a can be firmly connected to the groove of the tooth seat 6e. The end of the engaging portion 62 has an upturned portion 622 for engaging with the tooth seat 6e, so that the contact between the two is closer.

FIG. 10 shows the structure of the needle-shaped portion 611. The outer side of the needle part 611 (the side radially outward after being installed on the tooth seat 6e) has a needle part groove 6111, which is used to align the tooth seat after the tooth seat is turned 180 degrees. The needle portion 611 of the slit tooth on the tooth seat can overlap in the groove 6111 of the needle part 611 of the slit tooth on the upper tooth seat, so that the subsequent stitch transfer is smoother.

Figure 11 shows the structure of another embodiment of the slit tooth 6b. The outer side of the elongated body 61 of the slit tooth 6b (the side radially outward after being installed on the tooth seat 6e) has a suture groove 613. The suture groove 613 is used To accommodate the stitching needle of the sewing machine, the two stitching needles are stitched alternately, thereby stitching the toe of the socks together.

As shown in Fig. 12, when in use, the positional relationship between the slit teeth 6a, the transfer needle 4a, the transfer needle 4b and the two needle guards 4c. The slit teeth 6a are inserted into the transfer needle groove 43 formed by the transfer needle 4a and the transfer needle 4b together, and the transfer needle 4a and the transfer needle 4b are inserted into the gap between the two needle guard pieces 4c.

Hereinafter, a schematic diagram of the working process of the transfer needle of the present invention will be described with reference to FIGS. 13-29. The present invention is described below taking socks as an example, but the present invention can also be applied to other fabrics.

Figures 13-16 show a schematic diagram of step S1 of the method of the present invention: the stitches of the fabric on the hosiery needles of the fabric are pressed down by a certain distance using the needle guard, wherein the hosiery needles pass through two adjacent guard needles Within the gap formed by the sheet. As shown in Fig. 13, when the hosiery machine is woven to the last loop, the fabric 3 is in the hosiery tube 2 of the hosiery machine, and the last loop of the fabric 3 is under the tongue of the hosiery needle 1. The needle guard 4c is moved radially inward to be positioned above the hosiery needle 1, so that the hosiery needle 1 is positioned below the gap formed by the two needle guards 4c used in pairs.

As shown in Fig. 14, the sock turning tube 2 moves upward, and at the same time, the hosiery needle 1 also moves upward, and the fabric 3 leaves the green sheet 201 and approaches the needle guard 4c. The moving distance is such that the hosiery needle 1 is located under the two needle guards 4c, and the transfer needles 4a and 4b are located above the two needle guards 4.

As shown in Figure 15, the needle guard 4c is moved radially inward, and the transfer needles 4a, 4b are moved radially outward. The purpose is to make the needle guard 4c on the coil, and the needle guard 4c can move downwards. Press the loop on the hosiery needle 1 under the needle tongue. At the same time, the transfer needles 4a, 4b above the needle guard 4c are moved radially outward so as not to affect the up and down stroke of the transfer needle 1.

As shown in Figure 16, the needle guard 4c and the transfer needles 4a, 4b are moved downward together, so that the hosiery needle 1 passes through the gap formed between the two needle guards 4c. The stitches of the fabric 3 are pressed down by the needle guard 4c and moved down for a certain distance.

Figures 17-19 show a schematic diagram of step S2 of the method of the present invention: the needle guard is moved to the loop of the fabric so that the loop is stuck in the recess of the needle guard.

In Fig. 17, the needle guard 4c is moved radially outwards and separated from the hosiery needle 1 so as not to affect the up and down stroke of the transfer needle. The gap between the transfer needles 4a, 4b and the gap formed between the two needle guards 4c can be aligned up and down.

In FIG. 18, the needle guard 4c and the transfer needles 4a, 4b are moved downward together, so that the recess 463 of the needle guard 4c is aligned with the coil.

In Fig. 19, the needle guard 4c is moved radially inward, so that the hosiery needle 1 is located in the gap formed by the two needle guards 4c, and the stitch is located in the recess 463 of the needle guard 4c.

Figures 20-22 show a schematic diagram of step S3 of the method of the present invention: move the needle guard upward to drive the loop upward, and the loop drives the tongue of the hosiery needle to turn up until the tongue of the hosiery needle abuts against the transfer Bottom edge of the needle.

In Figure 20, the needle guard 4c, the transfer needles 4a, 4b are moved upward together, the loop of the fabric 3 is moved upward by the needle guard 4c, and finally the needle tongue of the hosiery needle 1 is also lifted by the needle guard 4c, and finally Abut against the lower edges of the transfer pins 4a, 4b.

In FIG. 21, the needle guard 4c is moved radially outward, and can be moved to the initial position of the needle guard 4c, so as not to affect the up and down stroke of the transfer needle 1.

In Fig. 22, the needle guard 4c and the transfer needles 4a, 4b are moved upward together, and the needle tongue of the hosiery needle is raised at this time.

Fig. 23 shows a schematic diagram of step S4 of the method of the present invention: moving the transfer needle so that the needle of the hosiery needle is located in the transfer groove of the transfer needle.

In Fig. 23, the transfer needles 4a, 4b are moved radially inward together, so that the needle head of the hosiery needle 1 hangs in the transfer needle groove 43 formed by the transfer needles 4a, 4b.

Figures 24-26 show a schematic diagram of step S5 of the method of the present invention: move the needle guard below the loop to drive the loop up, so that the needle tongue is closed, and the loop is transferred to the transfer needle

In FIG. 24, the needle guard 4c is moved down to below the stitch position of the fabric 3.

In FIG. 25, the needle guard 4c is moved radially inward so that the hosiery needles are located in the gap formed by the two needle guards 4c. Preferably, the upper edge of the needle guard 4c abuts on the loops of the fabric 3 .

In Fig. 26, the needle guard 4c is moved upward to drive the loops of the fabric 3 to move upward, and the needle tongue of the hosiery needle 1 is driven to close upward, so that the opening of the hosiery needle 1 is closed. Continue to move the needle guard 4c so that the stitches are transferred to the transfer needles 4a, 4b.

In Figure 27, the needle guard 4c, the transfer needles 4a, 4b are moved upward together, away from the hosiery needle 1. At this time, the loop of the fabric 3 is sleeved on the transfer needles 4a, 4b, and the needle guard 4c is supported underneath. Therefore, it can be firmly sleeved on the transfer needles 4a, 4b, thereby facilitating subsequent operations, such as the transfer and turnover of the fabric.

In Fig. 28, the hosiery needle 1 moves downward.

In Fig. 29, the sock needles and the green sheet 201 are removed, and the subsequent operations are performed.

The above-mentioned embodiments are only preferred specific implementations of the present invention, and the usual changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

A fabric pick-up and transfer method for a circular knitting machine, which is characterized in that it comprises:

S1, using the needle guard to press down the loops of the fabric on the hosiery needles of the fabric for a certain distance, wherein the hosiery needle passes through the gap formed by two adjacent needle guards;

S2: Move the needle guard to the loop of the fabric so that the loop is stuck in the recess of the needle guard;

S3: Move the needle guard upward to drive the loop upward, and the loop drives the tongue of the hosiery needle to turn up until the tongue of the hosiery needle abuts against the lower edge of the transfer needle;

S4. Move the transfer needle so that the needle of the hosiery needle is located in the transfer groove of the transfer needle;

S5: Move the needle guard to the bottom of the loop to drive the loop up, so that the needle tongue is closed, and the loop is transferred to the transfer needle.
The fabric pick-up and transfer method for circular knitting machines according to claim 1, wherein the step S1 comprises:

S11, moving the needle guard radially inward to be positioned above the hosiery needles, so that the hosiery needles are positioned below the gap formed by the needle guard;

S12: Move the transfer needle above the needle guard radially outward so as not to affect the up and down stroke of the transfer needle;

S13, the needle guard and the transfer needle are moved downward together, and the stitch of the fabric on the sock needle of the fabric is pressed down by a certain distance by using the needle guard.
The fabric pick-up and transfer method for circular knitting machines according to claim 1, wherein the step S2 comprises:

S21, move the needle guard radially outward so as not to affect the up and down stroke of the transfer needle;

S22: Move the needle guard and the transfer needle downward together, so that the recess of the needle guard is aligned with the coil;

S23: Move the needle guard radially inwardly, so that the hosiery needles are located in the gap of the needle guard, and the loop is stuck in the recess of the needle guard.
The fabric pick-up and transfer method for circular knitting machines according to claim 1, wherein the step S3 comprises:

S31: Make the needle guard and the transfer needle move upward together to drive the coil to move upward;

S32, move the needle guard radially outward so as not to affect the up and down stroke of the transfer needle;

In S33, the needle guard and the transfer needle are moved upward together, so that the needle tongue of the hosiery needle is raised.
The fabric pick-up and transfer method for circular knitting machines according to claim 1, wherein the step S4 comprises:

The transfer needle is moved radially inward, so that the needle of the hosiery needle is located in the transfer groove of the transfer needle.
The fabric pick-up and transfer method for circular knitting machines according to claim 1, wherein the step S5 comprises:

S51, make the needle guard move down to below the coil;

S52, make the needle guard move radially inward;

S53: Make the needle guard move upward, drive the loop to move upward, and the tongue of the sock needle is closed, and the loop is transferred to the transfer needle.
The fabric picking and transferring method for circular knitting machine according to claim 1, characterized in that it further comprises:

S6, the needle guard moves together with the transfer needle, and the needle guard lifts the loop under the loop to prevent it from falling.
The fabric pick-up and transfer method for circular knitting machines according to claim 1, wherein the needle guard comprises:

The needle guard body (45), the front end of the needle guard body (45) extends downwards with a needle guard clamping portion (46), and the needle guard clamping portion (46) has a first protrusion (461) and a second A protrusion (462), a depression (463) is formed between the first protrusion (461) and the second protrusion (462).
The fabric pick-up and transfer method for a circular knitting machine according to claim 8, wherein:

A needle guard chamfer (47) is formed at the junction between the needle guard body (45) and the needle guard clamping portion (46),

The needle guard clamping portion (46) extends vertically downward from the needle guard chamfered portion (47).
The fabric pick-up and transfer method for a circular knitting machine according to claim 1, wherein:

The lower side of the rear end of the needle guard body (45) has a needle guard protrusion (451) for engaging an external device, and the needle guard body (45) has a plurality of needle guard grooves (452) on the lower side , Used to snap external devices.