TWI707073B - Knotting device for color changing head of circular knitting machine - Google Patents

Abstract

A knotting device for the color-changing head of a circular knitting machine, comprising a fixing frame, a knot winding module, a thread collecting module, a yarn storage module and an elastic arm. This creation system combines the two phases through the thread collecting module. The different yarn is brought into the winding module, and when a pair of fixed clamping jaws and a movable clamping jaw are rotated, the movable clamping jaws clamp and wind the two fixed jaws relative to the pair of fixed clamping jaws. During the winding process of the yarn, the yarn storage module can ensure the tension value of the yarns, and finally use the elastic arm to separate the two yarns from the pair of fixed clamping jaws and the movable The clamping and tightening of the clamping jaws is used as the connection and binding of two different yarns when changing the thread, which greatly improves the production efficiency and quality.

Description

Knotting device for color changing head of circular knitting machine

This creative department belongs to the field of circular knitting machines, especially related to a knotting device for the color changing head of circular knitting machines, which is used to connect two different yarns when changing threads, which greatly improves production efficiency and quality. .

According to, the circular knitting machine is used to knit a variety of fabrics with different colors and patterns. Its action mode is that a cam and an actuator are respectively provided on the bottom surface of a disc, and a plurality of thread changing devices or It is called a color changing head. The inside of the color changing head is stacked with a plurality of clamping and cutting yarn groups. When the circular disk rotates, the cam and the actuator are driven to rotate synchronously. After rotation, the actuator moves To the corresponding position of the thread changing device to be used, the actuator selects one of the yarn clamping and cutting groups, so that the cam and the yarn clamping and cutting group are connected to each other to drive a yarn and drive the yarn to The yarn feeding port of the color changing head is for the purpose of switching between different yarns.

However, when switching between different yarns, the two yarns must be properly tied, so that they can smoothly connect the switched colors and continue to transport the changed yarns. The tied parts can also avoid the problem of weaving interruption. Since these tying systems involve the operation and linkage of the original color-changing head, most of them still use manual tying methods, so production efficiency and quality will be affected to a certain extent. Therefore, there are also many kinds of knotting devices on the market that are used to connect two different yarns. The method of tying the yarn when winding, and its own mechanism is too complicated, it has a complicated component design. In terms of the structure of the color changing head, the addition of such a design not only increases the difficulty of manufacturing, but also has a certain impact on the cost and subsequent maintenance. Therefore, it is necessary to improve this shortcoming.

In view of this, the creator of the Republic of China invention patent No. M378239 "Open-type color changing head thread changing device" proposed in the past has designed a tie-in device that can be matched with each other by adding a knot on the body of the color changing head. The module, a thread collecting module, a yarn storage module and an elastic arm automatically tie the two different yarns to prevent them from falling off after being tied, thus solving the problem of the complicated structure of the traditional knotting device, and Conducive to subsequent maintenance issues.

One purpose of this creation is to provide a color-changing head knotting device for a circular knitting machine, which is composed of a well-designed knotting module, a thread collecting module, a yarn storage module, and an elastic arm. The two different yarns are driven in sequence and wound until the final knot is completed. In the meantime, the tension value when connecting the tie is ensured, so that it will not fall off after the tie, which greatly improves the convenience of operation and production Efficiency, quality and other effects.

In order to achieve the above purpose, the knotting device of the color changing head of the circular knitting machine of this creation is set on the side of the color changing head, wherein the color changing head is superimposed with a plurality of clamping and cutting yarn groups. When operating, one of the clamping and cutting The yarn group will drive a yarn to the yarn feeding port of the color changing head. The knotting device is used to switch the connection and binding of different yarns. The knotting device includes: a fixing frame with an accommodation space inside. , Are arranged at intervals below the color changing head; a winding module is arranged inside the accommodating space, and the winding module includes a first seat, a first rotating shaft and a first driving member, the first A first through hole is provided in the center of the base, the first rotating shaft is movably installed in the first through hole, and a pair of fixed clamping jaws and a movable clamping jaw are arranged on the top of the first rotating shaft. A movable space is formed between the movable clamping jaws, and the movable clamping jaws are movably pivoted therebetween. The first rotating shaft A first gear is also provided at the bottom end, the first driving member is engaged with the first gear, and one end is power-connected with the circular knitting machine to drive the first rotating shaft to rotate, and the top of the first seat body A cam surface should be formed by the movable clamping jaws. When the first rotating shaft rotates, the movable clamping jaws can clamp and wind the two yarns relative to the pair of fixed clamping jaws; a thread collecting module, spaced apart It is arranged on one side of the winding module, and the line-collecting module includes a second base, a second rotating shaft, a line-collecting arm, and a second driving member. A second through-hole is provided in the center of the second base Hole, the second rotating shaft is movably installed in the second through hole, the line-collecting arm is a curved structure and the end is connected to the top of the second rotating shaft, and the bottom end of the second rotating shaft is provided with a first Two gears, the second driving member meshes with the second gear, and one end is connected with the circular knitting machine to drive the second rotating shaft to rotate; a yarn storage module is arranged on one side of the color changing head, And the yarn storage module includes a movable knife board, a force adjusting arm, a yarn take-off board, an auxiliary yarn pulling piece and a third driving member. The movable knife board, the tension adjusting arm and the auxiliary yarn pulling piece are respectively Are symmetrically arranged on the two sides of the winding module, and the tension adjusting arm is arranged on the outer side of the auxiliary yarn pulling piece at intervals to pass the running yarn through the movable knife board, the auxiliary yarn pulling piece and When the tension adjusting arm is used for the thread collecting arm to drive the two yarns in the yarn storage module to the winding module for winding operation, the movable knife plate and the tension adjusting arm can ensure The tension value of the yarn in the meantime, and the de-threading plate is arranged on the inner side of the auxiliary yarn-pulling piece at intervals, and both the de-threading plate and the auxiliary yarn-pulling piece are connected with the third driving member to form a linkage, With the aid of the de-twisting plate, the yarn after the winding is drawn out toward the front end of the fixed clamping jaw; and an elastic arm is arranged on the other side of the winding module to make the thread collecting module And the elastic arm are opposed to each other, and one end of the elastic arm is provided with a threading hole corresponding to one of the yarns, and the other end is connected to the color changing head through an elastic element; accordingly, when the yarn release board will complete the winding After the two yarns of the knotting operation are separated from the clamping of the pair of fixed clamping jaws and the movable clamping jaws, the elastic arm is subjected to the action of the elastic element to tighten the knot to complete the knotting operation.

In one embodiment, one end of the fixed jaws of the present creation is shaped like a crane that extends diagonally forward; and one end of the movable jaws is shaped to correspond to the shape of the fixed jaws, so that it also presents diagonally forward Extending the shape of the crane's mouth, the other end of the movable jaw corresponds to the cam surface to form an abutting surface. Therefore, when the first rotating shaft rotates, the abutting surface is restricted by the shape of the cam surface, so that the movable clamp The claws produce opening or closing actions relative to the pair of fixed clamping jaws. In addition, a first elastic element is provided in the first rotating shaft, and one end of the first elastic element is connected to the movable clamping claw, by means of the first elastic element The restoring elastic force ensures that the abutting surface respectively presses the two opposite sides of the cam surface; in addition, the cam surface of this creation is a continuous concave-convex design, and the concave portion of the cam surface corresponds to the state of the movable jaws being closed. And the convex part of the cam surface corresponds to the open state of the movable jaw.

Furthermore, the first driving member reciprocates linearly, so the first rotating shaft can only rotate forward or reverse at a set angle, and the second driving member also reciprocates linearly, so the second rotating shaft only It can be used for forward rotation or reverse rotation of the set angle to drive the line-collecting module and the winding module to sequentially produce actions.

1: Knotting device

11: fixed frame

111: Plate

112: housing space

12: Winding module

121: First Block

1211: first through hole

1212: cam surface

122: first rotation axis

1221: fixed gripper

1222: movable gripper

12221: top surface

1223: first gear

1224: The first elastic element

123: The first driver

13: hub module

131: Second Block

1311: second through hole

132: second rotation axis

1321: second gear

133: Hub

134: The second drive

14: Yarn storage module

141: movable knife board

142: Tension adjustment arm

143: Detachment Board

144: auxiliary drawing sheet

145: Third Drive

15: Elastic arm

151: Threading hole

2: Color changing head

3: yarn

Figure 1 is a schematic structural diagram of a preferred embodiment of authoring.

Figure 2 is a schematic diagram (1) of the operating state of the preferred embodiment of authoring.

Figure 3 is a schematic diagram (2) of the operating state of the preferred embodiment of authoring.

Figure 4 is a schematic diagram (3) of the operating state of the preferred embodiment of authoring.

Figure 5 is a schematic diagram of the state during the operation of the preferred embodiment of creation (4).

Figure 6 is a schematic diagram (5) of the operating state of the preferred embodiment of authoring.

Figure 7 is a schematic diagram (6) of the operating state of the preferred embodiment of authoring.

Figure 8 is a schematic diagram of the state of the authoring preferred embodiment during operation (7).

In order for your reviewers to have a clear understanding of the content of this creation, only the following descriptions and diagrams are used, please refer to it.

Please refer to Figure 1 and Figures 2-8, which are schematic diagrams of the structure and installation of the preferred embodiment of this creation, as well as schematic diagrams of various states during operation. As shown in the figure, the color-changing head knotting device 1 of the circular knitting machine of this creation is set on one side of a color-changing head 2, wherein the color-changing head 2 is stacked with a plurality of clamping and cutting yarn groups 21. One of the yarn clamping and cutting group 21 will drive a yarn 3 to a yarn feeding port 33 of the color changing head 2. The knotting device 1 is used to switch the connection of different yarns 3, and the knotting device 1 includes A fixing frame 11, a winding module 12, a thread 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 an accommodating space 112 is formed inside the fixing frame 1, and the fixing frame 1 is arranged under the color changing head 2 at intervals.

The winding module 12 is disposed inside the accommodating space 112, and the winding module 12 includes a first base 121, a first rotating shaft 122, and a first driving member 123. The first base 121 A first through hole 1211 is provided in the center. The first rotating shaft 122 is movably installed in the first through hole 1211. The top of the first rotating shaft 122 is provided with a pair of fixed jaws 1221 and a movable jaw 1222, the pair of fixed A movable space is formed between the clamping jaws 1221 so that the movable clamping jaw 1222 is movably pivoted therebetween. The bottom end of the first rotating shaft 122 is provided with a first gear 1223, and the first driving member 123 is engaged with the first gear 1223. Gear 1223, and one end is connected to the circular knitting machine (not shown in the figure) The power is connected to drive the first rotating shaft 122 to rotate, and the top surface of the first seat 121 should face the movable jaw 1222 to form a cam surface 1212. When the first rotating shaft 122 rotates, the movable The clamping jaws 1222 can clamp and wind the two yarns 3 relative to the pair of fixed clamping jaws 1221. It should be noted that one end of the pair of fixed jaws 1221 is shaped like a crane that extends diagonally forward, and one end of the movable jaw 1222 is also shaped to correspond to the shape of the fixed jaw 1221, and the other end corresponds to the cam surface 1212 forms an abutting surface 12221. When the first rotating shaft 122 rotates, the abutting surface 12221 is restricted by the shape of the cam surface 1212 to generate opening or closing actions. In addition, the first rotating shaft 122 further has a first elastic element 1224, and one end of the first elastic element 1224 is connected to the movable jaw 1222, and the elastic force of the first elastic element 1224 is used to ensure the top The supporting surface 12221 respectively presses the two opposite sides of the cam surface 1212, and the cam surface 1212 is a continuous concave-convex design. The concave portion of the cam surface 1212 corresponds to the closed state of the movable jaw 1222, and the cam surface 1212 The convex part corresponds to the state where the movable jaw 1222 is opened. Furthermore, in this embodiment, the first driving member 123 linearly reciprocates, so the first rotating shaft 122 can only perform forward or reverse rotation at a set angle.

The hub module 13 is spaced apart on one side of the winding module 12, and the hub module 13 includes a second base 131, a second rotating shaft 132, a hub 133, and a second drive member 134. A second through hole 1311 is provided in the center of the second seat body 131, the second rotating shaft 132 is movably installed in the second through hole 1311, and the concentrating arm 133 is a curved structure with an end connected to the The top end of the second rotating shaft 132, the bottom end of the second rotating shaft 132 is provided with a second gear 1321, the second driving member 134 is meshed with the second gear 1321, and one end is power-connected with the circular knitting machine to drive the The second rotating shaft 132 performs a rotating movement. Furthermore, the second driving member 134 linearly reciprocates, so the second rotating shaft 132 can only rotate forward or reverse at a set angle.

The yarn storage module 14 is arranged on one side of the color changing head 2, and the yarn storage module 14 includes a movable knife plate 141, a force adjusting arm 142, a yarn releasing plate 143, an auxiliary yarn pulling sheet 144 and a The third driving member 145, the movable knife plate 141, the tension adjusting arm 142 and the auxiliary yarn pulling piece 144 are respectively symmetrically arranged on the two sides of the winding module 12, and the tension adjusting arms 142 are arranged at intervals on the auxiliary yarn pulling The outer side of the sheet 144 allows the running yarn 3 to pass through the movable knife plate 141, the auxiliary yarn drawing sheet 144 and the tension adjusting arm 142 in sequence, and then use the thread collecting arm 133 to locate the yarn storage module When the two yarns 3 in 14 are driven into the winding module 12 for winding operation, the movable blade 141 and the tension adjusting arm 142 can ensure the tension value of the yarn 3 therebetween. In addition, the yarn-removing plate 143 is arranged at intervals on the inner side of the auxiliary yarn-drawing piece 144, and the yarn-removing plate 143 and the auxiliary yarn-drawing piece 144 are both power-connected with the third driving member 145 to form a linkage. The plate 143 can pull out the yarn 3 after the winding is completed toward the front end of the fixing jaw 1221. It should be noted that the yarn release plate 143 is movably arranged in the gap between the movable clamping jaws 1222. Therefore, the yarn 3 is surrounded and fixed on the yarn loop formed by the fixed clamping jaws 1221 in order to use the The yarn release plate 143 is pushed from the end to the front end of the fixed jaw 1221 to complete the yarn removal operation, and the movable knife plate 141 simultaneously cuts the yarn after the yarn release plate 143 completes the yarn removal operation. The actions of 3, because these actions are quite fast, they can be regarded as synchronous, but in fact there is still a sequence.

The elastic arm 15 is arranged on the other side of the winding module 12 relative to the line assembly module 13, so that the assembly line module 13 and the elastic arm 15 are opposite to each other, and one end of the elastic arm 15 corresponds to one of them The yarn 3 is provided with a threading hole 151, and the other end is connected to the color changing head 2 through an elastic element 152; accordingly, when the yarn release plate 143 separates the two yarns 3 from the pair of fixing clips After the claw 1221 and the movable clamping claw 1222 are clamped, the elastic arm 15 is subjected to the action of the elastic element 152 to tighten the knot to complete the knotting operation.

However, the above are only the preferred embodiments of this creation, and are not intended to limit the scope of implementation of this creation. Therefore, those who have ordinary knowledge in the technical field or are familiar with this technology make equivalent or easy Any changes and modifications made without departing from the spirit and scope of this creation shall be covered by the patent scope of this creation.

1: Knotting device

11: fixed frame

111: Plate

112: housing space

12: Winding module

121: First Block

1211: first through hole

1212: cam surface

122: first rotation axis

1221: fixed gripper

1222: movable gripper

12221: top surface

1223: first gear

1224: The first elastic element

123: The first driver

13: hub module

131: Second Block

1311: second through hole

132: second rotation axis

1321: second gear

133: Hub

134: The second drive

14: Yarn storage module

141: movable knife board

142: Tension adjustment arm

143: Detachment Board

144: auxiliary drawing sheet

145: Third Drive

15: Elastic arm

151: Threading hole

2: Color changing head

Claims (7)

A knotting device for the color changing head of a circular knitting machine is arranged on one side of the color changing head, wherein the color changing head is superimposed with a plurality of clamping and cutting yarn groups. When operating, one of the clamping and cutting yarn groups will drive a yarn To the yarn feeding port of the color changing head, the knotting device is used to switch the connection and binding of different yarns. The knotting device includes: a fixing frame with an accommodating space inside which is arranged at intervals on the color changing head Below; a winding module, which is arranged inside the accommodating space, and the winding module includes a first base, a first rotating shaft and a first driving member, the center of the first base is provided with a first A through hole, the first rotating shaft is movably installed in the first through hole, a pair of fixed jaws and a movable jaw are arranged on the top of the first rotating shaft, and a movable space is formed between the pair of fixed jaws to The movable clamping jaw is movably pivoted between them, the bottom end of the first rotating shaft is provided with a first gear, the first driving member is engaged with the first gear, and one end is connected to the circular knitting machine to drive the first gear. A rotating shaft rotates, and the top surface of the first seat body should form a cam surface for the movable clamping jaw. When the first rotating shaft rotates, the movable clamping jaw can clamp the pair of fixed jaws. The action of holding and winding the two yarns; a thread-collecting module, spaced apart on one side of the winding module, and the thread-collecting module includes a second seat, a second rotating shaft, a thread-collecting arm, and a The second driving member, the center of the second seat body is provided with a second through hole, the second rotating shaft is movably installed in the second through hole, and the line-collecting arm is a curved structure and the end is connected to the second The top end of the rotating shaft, the bottom end of the second rotating shaft is provided with a second gear, the second driving member is engaged with the second gear, and one end is connected with the circular knitting machine to drive the second rotating shaft to rotate A yarn storage module, which is arranged on one side of the color changing head, and the yarn storage module includes a movable knife board, a force adjusting arm, a yarn release board, an auxiliary yarn pulling piece and a third drive member, The movable knife board, the tension adjusting arm and the auxiliary yarn pulling piece are respectively arranged symmetrically on the two sides of the winding module, and the tension adjusting arm is arranged on the outer side of the auxiliary yarn pulling piece at intervals to keep the yarn in operation The thread passes through the movable knife board, the auxiliary yarn pulling piece and the tension adjusting arm in sequence, and the thread collecting arm is used to drive the two yarns in the yarn storage module to the winding module for winding During operation, the movable knife board and the tension adjusting arm can ensure the tension value of the yarn therebetween, and the yarn release board is arranged at intervals on the inner side of the auxiliary yarn puller, the yarn release board and the auxiliary puller The yarn pieces are connected with the third driving member for power to form a linkage, and the yarn after the warp knot can be drawn out toward the front end of the fixed jaw by the yarn release plate; and an elastic arm is provided On the other side of the winding module, make the hub module and the elastic arm face each other, and one end of the elastic arm is provided with a threading hole corresponding to one of the yarns, and the other end is connected by an elastic element To the color changing head; accordingly, when the yarn release board removes the two yarns that have completed the winding operation from the pair of fixed clamping jaws and the movable clamping jaws, the elastic arm is subjected to the action of the elastic element , And will go around Tighten the knot to complete the knotting operation. The knotting device for the color changing head of a circular braiding machine described in the first item of the scope of patent application, wherein one end of the pair of fixed jaws is shaped like a crane which extends diagonally forward. For the knotting device of the color changing head of a circular braiding machine described in the scope of patent application, one end of the movable jaw is shaped to correspond to the shape of the fixed jaw, and the other end is formed to correspond to the cam surface When the first rotating shaft rotates, the abutting surface is restricted by the shape of the cam surface to cause opening or closing actions. For example, the knotting device of the color changing head of the circular braiding machine described in the scope of the patent application further has a first elastic element arranged in the first rotating shaft, and one end of the first elastic element is connected to the The movable clamping jaw ensures that the abutting surface presses two opposite sides of the cam surface by the return elastic force of the first elastic element. The knotting device for the color changing head of a circular knitting machine described in item 4 of the scope of patent application, wherein the cam surface is a continuous concave-convex design, and the concave portion of the cam surface corresponds to the state where the movable jaw is closed, and The convex part of the cam surface corresponds to the open state of the movable jaw. The knotting device for the color changing head of a circular braiding machine described in the first item of the scope of patent application, wherein the first driving member is linearly reciprocating, so the first rotating shaft can only perform forward or reverse rotation at a set angle . The knotting device of the color changing head of circular braiding machine described in the first item of the scope of patent application, wherein the second driving member is linearly reciprocating, so the second rotating shaft can only perform forward or reverse rotation at a set angle .

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