CN111364158B

CN111364158B - Knotting device for color changing head of circular knitting machine

Info

Publication number: CN111364158B
Application number: CN201811602132.6A
Authority: CN
Inventors: 魏志亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-26
Filing date: 2018-12-26
Publication date: 2021-07-16
Anticipated expiration: 2038-12-26
Also published as: CN111364158A

Abstract

The invention provides a knotting device of a circular knitting machine color changing head, which comprises a fixing frame, a winding module, a thread collecting module, a thread storage module and an elastic arm, wherein two different threads are brought into the winding module through the thread collecting module, and when a pair of fixed clamping jaws and a movable clamping jaw arranged on the winding module rotate, the movable clamping jaw generates actions of clamping and winding the two threads relative to the pair of fixed clamping jaws.

Description

Knotting device for color changing head of circular knitting machine

Technical Field

The invention relates to the field of circular knitting machines, in particular to a knotting device of a color changing head of a circular knitting machine, which is used for connecting and binding two different yarns during yarn changing, and greatly improves the production efficiency and quality.

Background

The circular knitting machine is used for knitting various fabrics with different colors and patterns, and the action mode is that a cam and an actuator are respectively arranged on the bottom surface of a disc, a plurality of thread changing devices or color changing heads are arranged below the disc, a plurality of clamping yarn sets are superposed in the color changing heads, when the disc rotates circularly, the cam and the actuator are driven to rotate synchronously, after the actuator moves to the corresponding position of the thread changing device to be used, one clamping yarn set is selected by the actuator, the cam is connected with the clamping yarn set to drive a yarn, and the yarn is driven to a yarn feeding port of the color changing head to switch the use of different yarns.

However, when different yarns are switched, the two yarns must be properly bound to smoothly connect and switch colors and continuously convey the changed yarns, and the bound parts can avoid the problem of weaving interruption. Therefore, various knotting devices for connecting two different yarns are also available in the market, the tying mode during winding is too complex, and for the color-changing head structure with the complex component design, the design is added, so that the manufacturing difficulty is increased, and certain influence is caused on the cost and subsequent maintenance, so that the defect needs to be overcome.

In view of the above, the inventor of the present invention designs a knotting device capable of being matched with each other for the previously proposed open color-changing head yarn-changing device of taiwan patent No. M378239, and automatically knottes two different yarns by additionally arranging a winding module, a yarn-collecting module, a yarn-storing module and a resilient arm on the color-changing head body, so as to prevent the yarns from falling off after being bound, thereby solving the problem of excessively complicated structure of the conventional knotting device and facilitating subsequent maintenance.

Disclosure of Invention

The invention aims to provide a color-changing head knotting device of a circular knitting machine, which is characterized in that two different yarns are sequentially driven, wound and knotted to finally finish knotting through the well-designed structure composition of a winding module, a line concentration module, a yarn storage module, an elastic arm and the like, and the tension value during connection and binding can be ensured, so that the yarns are not easy to fall off after binding, and the effects of convenience in operation, production efficiency, quality and the like are greatly improved.

In order to achieve the above object, the knotting device of a color-changing head of a circular knitting machine according to the present invention is disposed at one side of the color-changing head, wherein the color-changing head is stacked with a plurality of clamping and cutting yarn sets, one of the clamping and cutting yarn sets drives a yarn to a yarn feeding port of the color-changing head during operation, the knotting device is used for switching connection binding of different yarns, and the knotting device comprises: a fixing frame, the interior of which is provided with a containing space and is arranged below the color changing head at intervals; a winding module disposed in the accommodating space and including a first base, a first rotating shaft and a first driving member, the first base has a first through hole in the center, the first rotating shaft is movably installed in the first through hole, the top of the first rotating shaft is provided with a pair of fixed clamping jaws and a movable clamping jaw, a movable space is formed between the pair of fixed clamping jaws so as to movably pivot the movable clamping jaw between the fixed clamping jaws and the movable clamping jaw, the bottom end of the first rotating shaft is provided with a first gear, the first driving member is engaged with the first gear, one end of the first base body is connected with the circular knitting machine by power to drive the first rotating shaft to rotate, the top surface of the first base body corresponds to the movable clamping jaw to form a cam surface, when the first rotating shaft rotates, the movable clamping jaw can generate actions of clamping and winding the two yarns relative to the pair of fixed clamping jaws; the wire collecting module is arranged at one side of the winding module at intervals and comprises a second base body, a second rotating shaft, a wire collecting arm and a second driving piece, wherein a second through hole is formed in the center of the second base body, the second rotating shaft is movably arranged in the second through hole, the wire collecting arm is in a curved arc-shaped structure body, the tail end of the wire collecting arm is connected to the top end of the second rotating shaft, a second gear is arranged at the bottom end of the second rotating shaft, the second driving piece is meshed with the second gear, and one end of the second driving piece is in power connection with the circular knitting machine to drive the second rotating shaft to rotate; a yarn storage module arranged at one side of the color changing head and comprising a movable knife board, a tension adjusting arm, a yarn releasing board, an auxiliary yarn pulling sheet and a third driving piece, wherein the movable knife board, the tension adjusting arm and the auxiliary yarn pulling sheet are respectively and symmetrically arranged at two sides of the winding module, the tension adjusting arm is arranged at the outer side of the auxiliary yarn pulling sheet at intervals so as to enable the running yarns to sequentially pass through the movable knife board, the auxiliary yarn pulling sheet and the tension adjusting arm, when the yarn collecting arm is used for driving the two yarns in the yarn storage module to the winding module for winding operation, the tension value of the yarns between the movable knife board and the tension adjusting arm can be ensured, the yarn releasing board is arranged at the inner side of the auxiliary yarn pulling sheet at intervals, and the yarn releasing board and the auxiliary yarn pulling sheet are both linked with the third driving piece to form a linkage force, the yarn after the winding and knotting can be pulled out towards the front end of the fixed clamping jaw by the yarn stripping plate; the elastic arm is arranged on the other side of the winding module, so that the thread collecting module and the elastic arm are opposite to each other, one end of the elastic arm is provided with a thread hole corresponding to one of the yarns, and the other end of the elastic arm is connected to the color changing head through an elastic element; therefore, when the yarn releasing plate releases the two yarns which finish the knotting operation from the clamping of the pair of fixed clamping jaws and the movable clamping jaw, the elastic arm is under the action of the elastic element to tighten the knotting operation so as to finish the knotting operation.

In one embodiment, one end of the pair of fixed clamping jaws is shaped like a crane nozzle extending obliquely forwards; one end of the movable clamping jaw is formed into a shape corresponding to the pair of fixed clamping jaws, so that the movable clamping jaw also presents a crane mouth shape extending obliquely forwards, the other end of the movable clamping jaw corresponds to the cam surface to form an abutting surface, when the first rotating shaft rotates, the abutting surface is limited by the shape of the cam surface, so that the movable clamping jaw generates opening or closing action relative to the pair of fixed clamping jaws, in addition, a first elastic element is arranged in the first rotating shaft, one end of the first elastic element is connected to the movable clamping jaw, and the abutting surfaces are ensured to respectively press the two opposite sides of the cam surface by the resilience of the first elastic element; in addition, the cam surface is designed to be a continuous concave-convex surface, the concave part of the cam surface corresponds to the closed state of the movable clamping jaw, and the convex part of the cam surface corresponds to the opened state of the movable clamping jaw.

Furthermore, the first driving member is linearly reciprocated, so that the first rotating shaft can only rotate forward or backward at a predetermined angle, and the second driving member is also linearly reciprocated, so that the second rotating shaft can only rotate forward or backward at a predetermined angle, thereby respectively driving the line concentrating module and the winding module to sequentially operate.

The invention brings two different yarns into the winding module through the yarn collecting module, and utilizes the pair of fixed clamping jaws and the movable clamping jaw arranged on the yarn collecting module to rotate so that the movable clamping jaw generates actions of clamping and winding the two yarns relative to the pair of fixed clamping jaws.

Drawings

Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention.

FIG. 2 is a state diagram of the operation of the preferred embodiment of the present invention.

FIG. 3 is a diagram illustrating the operation of the preferred embodiment of the present invention in a second state.

FIG. 4 is a state diagram of the preferred embodiment of the present invention in operation (III).

FIG. 5 is a state diagram of the preferred embodiment of the present invention in operation.

FIG. 6 is a diagram illustrating the operation of the preferred embodiment of the present invention.

FIG. 7 is a diagram illustrating the operation of the preferred embodiment of the present invention in a sixth state.

FIG. 8 is a seventh view of the state of the preferred embodiment of the present invention in operation.

Description of reference numerals: 1-a knotting device; 11-a fixing frame; 111-a sheet material; 112-a containing space; 12-a kink module; 121-a first seat body; 1211-a first through hole; 1212-a cam surface; 122-a first axis of rotation; 1221-a fixed jaw; 1222-a movable jaw; 12221-a top-up surface; 1223-a first gear; 1224-a first resilient element; 123-a first drive member; 13-a line concentration module; 131-a second seat body; 1311-a second through hole; 132-a second axis of rotation; 1321-a second gear; 133-a hub arm; 134-a second drive member; 14-a yarn storage module; 141-a movable cutting board; 142-a tensioning arm; 143-a doffing plate; 144-auxiliary pull-in piece; 145-a third drive member; 15-elastic arm; 151-threading hole; 2-a color changing head; 3-the yarn.

Detailed Description

For the clear understanding of the present invention, reference is made to the following description only, taken in conjunction with the accompanying drawings.

Please refer to fig. 1 and fig. 2 to fig. 8, which are schematic structural diagrams, installation diagrams, and operation states of the preferred embodiment of the present invention. As shown in the figures, the color-changing head knotting device 1 of the circular knitting machine of the present invention is disposed at one side of a color-changing head 2, wherein the color-changing head 2 is stacked with a plurality of clamping and cutting yarn sets 21, when in operation, one of the clamping and cutting yarn sets 21 drives a yarn 3 to a yarn feeding port 33 of the color-changing head 2, the knotting device 1 is used for switching the connection binding of different yarns 3, and the knotting device 1 includes a fixing frame 11, a winding module 12, a yarn collecting module 13, a yarn storage module 14 and an elastic arm 15.

The fixing frame 11 is formed by a plurality of plates 111 arranged at intervals, so that an accommodating space 112 is formed inside the fixing frame 1, and the fixing frame 1 is arranged below the color changing head 2 at intervals.

The knotting module 12 is disposed inside the accommodating space 112, and the knotting module 12 includes a first base 121, a first rotating shaft 122 and a first driving member 123, a first through hole 1211 is disposed in the center of the first base 121, the first rotating shaft 122 is movably mounted in the first through hole 1211, a pair of fixed jaws 1221 and a movable jaw 1222 are disposed on the top of the first rotating shaft 122, a movable space 1223 is formed between the pair of fixed jaws 1221 to movably pivot the movable jaw 1222 therebetween, a first gear 1223 is disposed at the bottom of the first rotating shaft 122, the first driving member 123 engages the first gear 1223, and one end of the first driving member is in power engagement with the circular knitting machine (not shown) to drive the first rotating shaft 122 to perform a rotating motion, and a cam surface 1212 is formed on the top surface of the first base 121 corresponding to the movable jaw 1222, when the first rotating shaft 122 performs a rotating motion, the movable jaw 1222 can perform the actions of clamping and winding the two yarns 3 with respect to the pair of fixed jaws 1221. It should be noted that one end of the pair of fixed jaws 1221 is shaped like a tip extending obliquely forward, and one end of the movable jaw 1222 is also shaped corresponding to the shape of the pair of fixed jaws 1221, and the other end of the movable jaw 1222 is shaped corresponding to the cam surface 1212 to form an abutting surface 12221, when the first rotation shaft 122 rotates, the abutting surface 12221 is limited by the shape of the cam surface 1212 to generate an opening or closing action. In addition, the first rotating shaft 122 further has a first elastic element 1224 therein, and one end of the first elastic element 1224 is connected to the movable jaw 1222, the elastic force of the first elastic element 1224 ensures that the abutting surface 12221 presses against two opposite sides of the cam surface 1212, respectively, and the cam surface 1212 has a continuous concave-convex surface design, the concave portion of the cam surface 1212 corresponds to the closed state of the movable jaw 1222, and the convex portion of the cam surface 1212 corresponds to the open state of the movable jaw 1222. In addition, in the present embodiment, the first driving member 123 reciprocates linearly, so that the first rotating shaft 122 can only rotate forward or backward at a predetermined angle.

The line concentration module 13 is disposed at one side of the winding module 12 at intervals, and the line concentration module 13 includes a second base 131, a second rotation shaft 132, a line concentration arm 133 and a second driving member 134, the center of the second base 131 is disposed with a second through hole 1311, the second rotation shaft 132 is movably mounted in the second through hole 1311, the line concentration arm 133 is a curved structure and the end thereof is connected to the top end of the second rotation shaft 132, the bottom end of the second rotation shaft 132 is disposed with a second gear 1321, the second driving member 134 is engaged with the second gear 1321, and one end thereof is engaged with the circular knitting machine to drive the second rotation shaft 132 to rotate. Furthermore, the second driving member 134 is linearly reciprocated, so that the second rotating shaft 132 can only rotate forward or backward at a predetermined angle.

The yarn storage module 14 is disposed at one side of the color changing head 2, and the yarn storage module 14 includes a movable knife board 141, a tension adjusting arm 142, a yarn releasing board 143, an auxiliary yarn pulling sheet 144 and a third driving member 145, the movable knife board 141, the tension adjusting arm 142 and the auxiliary yarn pulling sheet 144 are respectively symmetrically disposed at two sides of the knotting module 12, and the tension adjusting arm 142 is disposed at an interval outside the auxiliary yarn pulling sheet 144, so that after the running yarn 3 sequentially passes through the movable knife board 141, the auxiliary yarn pulling sheet 144 and the tension adjusting arm 142, the yarn collecting arm 133 is utilized to drive the two yarns 3 in the yarn storage module 14 to the knotting module 12 for knotting operation, and the tension value of the yarn 3 therebetween can be ensured by means of the movable knife board 141 and the tension adjusting arm 142. Moreover, the doffing plate 143 is disposed at an interval inside the auxiliary yarn pulling piece 144, the doffing plate 143 and the auxiliary yarn pulling piece 144 are both linked with the third driving member 145 as power, and the yarn 3 after the winding is completed can be pulled out toward the front end of the fixed clamping jaw 1221 by the doffing plate 143. It should be noted that the doffing plate 143 is movably disposed in the gap between the movable clamping jaws 1222, so that the yarn 3 is wound around the yarn loop formed on the fixed clamping jaw 1221, and the yarn doffing plate 143 is pushed from the end to the front end of the fixed clamping jaw 1222 to complete the yarn doffing operation, and the movable knife plate 141 is synchronously operated to cut the yarn 3 after the yarn doffing plate 143 completes the yarn doffing operation, and these operations are considered to be synchronously performed because the speed of the operations is relatively fast, but actually there is the sequence thereof.

The elastic arm 15 is disposed on the other side of the winding module 12 opposite to the thread collecting module 13, so that the thread collecting module 13 and the elastic arm 15 are opposite to each other, and one end of the elastic arm 15 is provided with a thread hole 151 corresponding to one of the threads 3, and the other end is connected to the color-changing head 2 through an elastic element 152; accordingly, when the yarn take-off plate 143 takes off the two yarns 3 that have been knotted from the pair of fixed jaws 1221 and the movable jaw 1222, the elastic arm 15 is acted by the elastic element 152 to tighten the knot to complete the knotting operation.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The utility model provides a knotting device of circular braider colour-changing head locates this colour-changing head one side, and wherein this colour-changing head is superpose and is equipped with a plurality of presss from both sides and cuts yarn group, and during the operation, one of them should press from both sides and cut yarn group and can drive a yarn to the yarn inlet of this colour-changing head, and this knotting device is used for switching the connection when different yarns and ties up, and its characterized in that, this knotting device includes:

a fixing frame, the interior of which is provided with a containing space and is arranged below the color changing head at intervals;

a winding module disposed in the accommodating space and including a first base, a first rotating shaft and a first driving member, the first base has a first through hole in the center, the first rotating shaft is movably installed in the first through hole, the top of the first rotating shaft is provided with a pair of fixed clamping jaws and a movable clamping jaw, a movable space is formed between the pair of fixed clamping jaws so as to movably pivot the movable clamping jaw between the fixed clamping jaws and the movable clamping jaw, the bottom end of the first rotating shaft is provided with a first gear, the first driving piece is engaged with the first gear, and one end of the first driving piece is in power connection with the circular knitting machine to drive the first rotating shaft to rotate, the top surface of the first base body forms a cam surface corresponding to the movable clamping jaw, when the first rotating shaft rotates, the movable clamping jaw can generate actions of clamping and winding the two yarns relative to the pair of fixed clamping jaws;

the wire collecting module is arranged at one side of the winding module at intervals and comprises a second base body, a second rotating shaft, a wire collecting arm and a second driving piece, wherein a second through hole is formed in the center of the second base body, the second rotating shaft is movably arranged in the second through hole, the wire collecting arm is in a curved arc-shaped structure body, the tail end of the wire collecting arm is connected to the top end of the second rotating shaft, a second gear is arranged at the bottom end of the second rotating shaft, the second driving piece is meshed with the second gear, and one end of the second driving piece is in power connection with the circular knitting machine to drive the second rotating shaft to rotate;

a yarn storage module arranged at one side of the color changing head and comprising a movable knife board, a tension adjusting arm, a yarn releasing board, an auxiliary yarn pulling sheet and a third driving piece, wherein the movable knife board, the tension adjusting arm and the auxiliary yarn pulling sheet are respectively and symmetrically arranged at two sides of the winding module, the tension adjusting arm is arranged at the outer side of the auxiliary yarn pulling sheet at intervals so as to enable the running yarns to sequentially pass through the movable knife board, the auxiliary yarn pulling sheet and the tension adjusting arm, when the yarn collecting arm is used for driving the two yarns in the yarn storage module to the winding module for winding operation, the tension value of the yarns between the movable knife board and the tension adjusting arm can be ensured, the yarn releasing board is arranged at the inner side of the auxiliary yarn pulling sheet at intervals, and the yarn releasing board and the auxiliary yarn pulling sheet are both linked with the third driving piece to form a linkage force, the yarn after the winding and knotting can be pulled out towards the front end of the fixed clamping jaw by the yarn stripping plate; and

the elastic arm is arranged on the other side of the winding module, so that the thread collecting module and the elastic arm are opposite to each other, one end of the elastic arm is provided with a thread hole corresponding to one of the yarns, and the other end of the elastic arm is connected to the color changing head through an elastic element; therefore, when the yarn releasing plate releases the two yarns which finish the knotting operation from the clamping of the pair of fixed clamping jaws and the movable clamping jaw, the elastic arm is under the action of the elastic element to tighten the knotting operation so as to finish the knotting operation.

2. The knotter device of claim 1, wherein the pair of fixed jaws are shaped as a beveled nose at one end.

3. The knotter device of claim 2, wherein the movable jaw is shaped to correspond to the pair of fixed jaws at one end and to form an abutting surface corresponding to the cam surface at the other end, so that when the first rotation shaft is rotated, the abutting surface is restricted by the shape of the cam surface to perform an opening or closing motion.

4. The knotting apparatus of the circular knitting machine color changing head of claim 3, wherein: the first elastic element is arranged in the first rotating shaft, one end of the first elastic element is connected to the movable clamping jaw, and the abutting surface is ensured to respectively press two opposite sides of the cam surface by means of the return elasticity of the first elastic element.

5. The knotter device of color-changing head of circular knitting machine according to claim 4, characterized in that the cam surface is designed as a continuous concave-convex surface, the concave part of the cam surface corresponding to the closed state of the movable jaw and the convex part of the cam surface corresponding to the open state of the movable jaw.

6. The knotter device of claim 1, wherein the first driving member linearly reciprocates such that the first rotational shaft can rotate only in a forward or reverse direction by a predetermined angle.

7. The knotter device of claim 1, wherein the second driving member linearly reciprocates such that the second rotational shaft can only rotate in a forward or reverse direction by a predetermined angle.