CN210194107U

CN210194107U - Yarn loop-back device of knitting machinery

Info

Publication number: CN210194107U
Application number: CN201920742672.8U
Authority: CN
Inventors: Huanghua Chen; 陈皇华; Changjun Guan; 管常军; Haifeng Chen; 陈海峰
Original assignee: ZHEJIANG ROSSO EQUIPMENT MANUFACTURING Co Ltd
Current assignee: ZHEJIANG ROSSO EQUIPMENT MANUFACTURING Co Ltd
Priority date: 2019-05-22
Filing date: 2019-05-22
Publication date: 2020-03-27
Anticipated expiration: 2029-05-22

Abstract

The utility model discloses a yarn loop device of knitting machinery, which comprises a loop steel wire connected with a loop bobbin, wherein the loop steel wire controls the loop amplitude and resistance of the yarn passing through the loop bobbin, and the loop resistance of the yarn is controlled by a loop resistance adjusting device; the loop resistance adjusting device comprises: the clamping force between an upper clamping piece and a lower clamping piece of the yarn clamped by the clamping device is adjustable; the loop steel wire controls the amplitude of the yarn loop and is controlled by a loop amplitude control device provided with a driving part. The utility model discloses a return wire resistance adjusting device and return wire amplitude control device under the combined action, realize the good return wire performance of various thickness yarns.

Description

Yarn loop-back device of knitting machinery

Technical Field

The utility model relates to a loop back device, specific yarn loop back device of knitting machinery that says so.

Background

The existing loop device of knitting machinery is mostly used for knitting loops of sock heads and sock heels, a corner is mostly within 180 degrees, target yarns of the loops are mostly cotton yarns and polyester covered yarns, and the thickness of the target yarns is within 800 Denier. Therefore, the loop device of the prior knitting machine has the following defects:

1. the rotation angle of the fabric knitting has limitation, and the rotation angle is not larger than 180 degrees, when the rotation angle is larger than 180 degrees, the object yarn of the loop cannot be returned, and a dotted line is reserved at the initial position of the fabric;

2. the raw materials and the thickness of the fabric are different due to different fabric types, particularly, like vamp fabrics, the raw materials are thick and hard, the loop-back resistance is large, and when the existing loop-back device is used for loop-back, asynchronous sliding is easy to occur between yarns and loop-back bobbins, so that the loop-back is not good;

3. in the process of wire returning, the space between the object yarns of the wire returning is not large due to the limitation of space, and the yarns are loose and tight, so that the yarns are easily wound, thereby causing faults.

In view of this, the utility model people of the present case have carried out intensive research on the above-mentioned problem, need solve following technical problem:

1. the technical problems of how to control the rotation angle of the fabric weaving to be close to 360 degrees, how to return the thread and how to avoid leaving broken lines and the like.

2. How to technically adjust or control the loop resistance.

3. How to avoid the yarn from winding.

Disclosure of Invention

The utility model provides a yarn loop device that loop stroke is sufficient, resistance is adjustable, avoid the yarn winding to be used for knitting machinery.

A yarn loop device of knitting machinery comprises a loop steel wire connected with a loop bobbin, wherein the loop steel wire controls the loop amplitude and resistance of yarn passing through the loop bobbin, and the yarn loop resistance is also controlled by a loop resistance adjusting device; the loop resistance adjusting device comprises:

the clamping force between an upper clamping piece and a lower clamping piece of the yarn clamped by the clamping device is adjustable; the specific regulation mode is that the side between last clamping piece and the lower clamping piece is equipped with adjust cylinder, and adjust cylinder's ejector pin front end is the toper structure, and the regulation performance of yarn resistance is realized to the interval between clamping piece and the lower clamping piece in the ejector pin control through adjust cylinder, also can regard as the device of direct control upper clamping piece and lower clamping piece directly whether have the clamping-force, and the clamping-force does not have in the separation of upper clamping piece and lower clamping piece promptly, and the closure has the clamping-force.

The loop steel wire controls the amplitude of the yarn loop and is controlled by a loop amplitude control device provided with a driving part. The return wire amplitude control device comprises a return wire control block connected with a return wire steel wire, the return wire control block is respectively matched and connected with the driving part and one end of a return wire tension spring, the other end of the return wire tension spring is connected with a spring adjusting sheet, and the spring adjusting sheet is installed on an adjusting sheet fixing seat. The driving part is a cylinder or a motor. The loop amplitude control device controls the length of the yarn loop to be larger than or equal to the perimeter of the diameter of the corresponding knitting mechanical needle cylinder.

The wire-returning mechanism is characterized in that a supporting hole connected with the supporting rod is formed in the middle of the wire-returning control block, one end of the wire-returning control block at the front end and the rear end of the supporting hole is connected with a wire-returning steel wire, one end of the wire-returning steel wire is connected with a wire-returning tension spring, a wire-returning amplitude curve is arranged at the edge of the wire-returning control block on the upper side face of the supporting hole, and the driving part is. The loop control block structure not only realizes the connection driving performance of the steel wire for the loop, but also realizes the linear control of the amplitude and the speed of the yarn loop by matching with the driving part, and particularly, the loop speed is faster when the curve curvature is larger, and the loop speed is slower when the curvature is smaller, so that the technical requirements of different loop speeds are met according to different yarn thicknesses.

The return wire steel wire is divided into two or more types with different lengths, and the two or more types are installed on the supporting rod together to meet the requirements of different return wire lengths.

And the yarn passing through the loop yarn bobbin simultaneously penetrates into the wind-proof pipe.

The wire returning steel wire is connected with a steel wire guide plate in a matched mode, a tooth-shaped structure matched with the wire returning steel wire is arranged on the steel wire guide plate and used for reset guiding of the wire returning steel wire, and a wire passing hole is formed in the steel wire guide plate on the lower side face of the tooth-shaped structure.

The utility model has the advantages that:

1. through scientific calculation, the swing stroke of the designed loop steel wire needs to be larger than or equal to the perimeter of the diameter of the corresponding needle cylinder, and the loop stroke is enough when the rotation angle of 360 degrees is limited, so that the problem that the object yarn of the loop is not enough to generate a dotted line is solved;

2. through the design and application of the wire clamping device, the friction force between the return wire object yarn and the return wire bobbin at the front end of the return wire steel wire is increased, so that the asynchronous sliding between the yarn and the return wire bobbin is avoided when the raw material is thick and hard, and the return wire effect is effectively guaranteed;

3. by the design and application of the windproof pipe at the front end of the loop bobbin, the possibility of yarn winding is effectively avoided, and the influence of external environments (such as wind, workshop negative pressure and the like) on the woven yarn is greatly reduced;

4. through the design and application of the side adjusting cylinder of the yarn clamping device, the state control of tension of yarns passing through the yarn clamping device is realized, and the knitting requirements of asynchronous yarn sections are met. (for example, when the same elastic yarn is used as a starting yarn and a face yarn, the function is needed because the tension of the elastic yarn is smaller and better when the mouth is started, otherwise the mouth is easy to fall off, and when the elastic yarn is used as the face yarn, the elastic yarn needs to be given certain tension, so that the smoothness of the weaving lines is guaranteed).

Drawings

FIG. 1 is a schematic view of a three-dimensional structure of a yarn returning device of the knitting machine of the present invention;

FIG. 2 is a schematic view of a exploded installation structure of a yarn returning device of the knitting machine of the present invention;

FIG. 3 is a schematic view of a yarn returning device of the knitting machine according to the present invention in a non-returning state;

fig. 4 is a schematic view of the yarn returning device for knitting machine according to the present invention.

Detailed Description

Referring to the attached drawings 1-4, the yarn returning device of the knitting machine comprises a returning steel wire 5 connected with a returning yarn bobbin 3, wherein the yarn 23 connected with the returning yarn bobbin 3 is controlled by the returning steel wire 5 to return the yarn amplitude and the resistance, and the yarn returning resistance is also controlled by a returning resistance adjusting device. The loop back resistance adjusting device comprises:

the clamping force between an upper clamping piece 9 and a lower clamping piece 10 of the yarn 23 clamped by the clamping device 8 is adjustable; specific regulation mode can adopt the spring to adjust, also can adopt the utility model discloses an embodiment specifically as follows:

the side between the upper clamping piece 9 and the lower clamping piece 1 is provided with an adjusting cylinder 11, the front end of a mandril of the adjusting cylinder 11 is of a conical structure, the clamping force between the upper clamping piece 9 and the lower clamping piece 1 to the yarn is controlled through the mandril, so that the loop resistance is controlled, and the technical structure can also directly control whether the upper clamping piece 9 and the lower clamping piece 1 clamp the yarn. The clamping force between the upper clamping piece 9 and the lower clamping piece 1 to the yarn can also be controlled by a tower spring inside the yarn clamping device 8. The adjusting cylinder 11 is preferably connected to a mounting plate of the adjusting cylinder 11 via a cylinder bracket 12.

The utility model discloses the range and the length of the 23 return wires of return wire steel wire 5 control yarn are controlled by the return wire range controlling means who has installed drive assembly.

The loop amplitude control device comprises a loop control block 6 connected with a loop steel wire 5, the loop control block 6 is respectively matched and connected with the driving part and one end of a loop tension spring 16, the other end of the loop tension spring 16 is connected with a spring adjusting sheet 2, and the spring adjusting sheet 2 is installed on an adjusting sheet fixing seat 17. The adjusting sheet fixing seat 17 is connected to the return wire bottom plate 18, and an air cylinder 25 or a motor serving as a driving part is further mounted on the return wire bottom plate 18. The cylinder 25 is installed on the cylinder seat 22, the cylinder seat 22 is connected with a support hole in the middle of the loop control block 6 through the support rod 21, one ends of the loop control blocks at the front end and the rear end of the support hole are connected with the loop steel wire 5, the other ends of the loop control blocks are connected with the loop tension spring, a loop amplitude curve is arranged at the edge of the loop control block on the upper side face of the support hole, and the driving part is matched with the loop amplitude curve at the edge of the loop control block to drive the. The loop control block 6 driven by the cylinder 25 swings back and forth by the loop tension spring 16.

The loop amplitude control device is preferably used as a structure for controlling the length of the yarn loop to be larger than or equal to the perimeter of the diameter of the corresponding needle cylinder of the knitting machine.

In order to realize multiple loop states, the loop steel wire is divided into two or more types with different lengths and is jointly arranged on the supporting rod.

In order to prevent the yarn winding, the yarn that passes back loop bobbin 3 penetrates simultaneously and prevents tuber pipe 1, prevents that tuber pipe 1 connects on preventing wind a tub fixed plate 20 to the back loop bobbin 3 outside, prevents wind a tub fixed plate 20 and connects on returning back loop bottom plate 18 through steel wire guide plate 4, returns back loop bottom plate 18 back mounted and has housing 13, is connected with fixed arm 15 on the housing 13. The steel wire guide plate 4 is provided with a tooth-shaped structure matched with the return wire steel wire 5 and used for reset guiding of the return wire steel wire, and the steel wire guide plate on the lower side surface of the tooth-shaped structure is provided with a wire passing hole to realize wire passing guiding of yarns and supporting guiding of the return wire steel wire 5.

The utility model discloses a theory of operation does: when the knitting equipment is in a unidirectional operation knitting process, the loop steel wire 5 is in a non-loop state under the action of the normally open solenoid valve corresponding to the air cylinder 25, and the knitting yarn is in a tight state of single tension given by the yarn gripper 8; when the knitting equipment is in a positive and negative rotation alternate knitting process, the normally open electromagnetic valve receives a closing signal, the corresponding air cylinder 25 resets under the action of the air cylinder top spring 7, the loop steel wire 5 starts to loop under the action of the loop tension spring 16 and is in a loop state, and the knitting yarn is in a tight state under the action of combined tension given by the yarn clamping device 8 and the loop tension spring 16; when the knitting equipment is in the positive and negative rotation alternate knitting process, if no loop back resistance adjusting device is applied, the loosening of knitting yarns is caused, so that the problems of yarn winding, broken lines, flatness and the like are frequently caused.

Claims

1. The utility model provides a knitting machinery's yarn return wire device, is including the return wire steel wire of connecting the return wire spool, and the yarn that passes the return wire spool is by return wire steel wire control return wire range and resistance, its characterized in that: the yarn loop-back resistance is also controlled by the loop-back resistance adjusting device; the loop resistance adjusting device comprises: the clamping force between an upper clamping piece and a lower clamping piece of the yarn clamped by the clamping device is adjustable; the loop steel wire controls the amplitude of the yarn loop and is controlled by a loop amplitude control device provided with a driving part.

2. A yarn return device for knitting machines as in claim 1, characterized in that: and an adjusting cylinder is arranged on the side edge between the upper clamping piece and the lower clamping piece.

3. A yarn return device for knitting machines as in claim 1, characterized in that: the loop amplitude control device comprises a loop control block connected with a loop steel wire, the loop control block is respectively matched and connected with the driving part and one end of a loop tension spring, the other end of the loop tension spring is connected with a spring adjusting sheet, and the spring adjusting sheet is installed on an adjusting sheet fixing seat.

4. A yarn return device for knitting machines as in claim 3, characterized in that: the driving part is a cylinder or a motor.

5. A yarn return device for knitting machines as in claim 3, characterized in that: the wire-returning mechanism is characterized in that a supporting hole connected with the supporting rod is formed in the middle of the wire-returning control block, one end of the wire-returning control block at the front end and the rear end of the supporting hole is connected with a wire-returning steel wire, one end of the wire-returning steel wire is connected with a wire-returning tension spring, a wire-returning amplitude curve is arranged at the edge of the wire-returning control block on the upper side face of the supporting hole, and the driving part is.

6. A yarn return device for knitting machines as in claim 3, characterized in that: the loop amplitude control device controls the length of the yarn loop to be larger than or equal to the perimeter of the diameter of the corresponding knitting mechanical needle cylinder.

7. Yarn return device for knitting machines according to claim 5, characterized in that: the return wire steel wire is divided into two or more types with different lengths and is jointly arranged on the supporting rod.

8. A yarn return device for knitting machines as in claim 1, characterized in that: and the yarn passing through the loop yarn bobbin simultaneously penetrates into the wind-proof pipe.

9. A yarn return device for knitting machines as in claim 1, characterized in that: the wire returning steel wire is connected with a steel wire guide plate in a matched mode, a tooth-shaped structure matched with the wire returning steel wire is arranged on the steel wire guide plate and used for reset guiding of the wire returning steel wire, and a wire passing hole is formed in the steel wire guide plate on the lower side face of the tooth-shaped structure.

10. A yarn return device for knitting machines as in claim 2, characterized in that: the front end of the ejector rod of the adjusting cylinder is of a conical structure.