WO2016068496A1

WO2016068496A1 - Driving structure of knitting apparatus using cam having circular cross section

Info

Publication number: WO2016068496A1
Application number: PCT/KR2015/010281
Authority: WO
Inventors: 고한수
Original assignee: 고한수
Priority date: 2014-10-27
Filing date: 2015-09-30
Publication date: 2016-05-06
Also published as: KR101517161B1

Abstract

The present invention relates to a driving structure of a knitting apparatus using a cam having a circular cross section, the driving structure having been developed in order to solve the problems of having to replace the cam when changing a knitting method and noise having occurred while carrying out a knitting operation by means of reciprocating motions of a guide bar, a needle bar, and a raw sheet guide bar by using a conventional cam of a non-circular cross section. Provided is the driving structure of the knitting apparatus using the cam having the circular cross section, the driving structure comprising: the needle bar for raising and lowering a needle by means of a first movable bar of which the lower end is linked to a first cam provided to a first driving shaft of the lower part, such that the needle is raised and lowered at a position at which yarn is knitted; the guide bar for moving a yarn guide left and right above the needle by means of a second movable bar of which the lower end is linked to a second cam provided to a second driving shaft of the lower part, so as to reverse the left and right positions of the yarn; and the raw sheet guide bar for horizontally moving a sinker by means of a third movable bar of which the lower end is linked to a third cam provided to a third driving shaft of the lower part, so as to reverse the left and right positions of the sinker for holding the yarn not to be raised from the lateral direction of the needle when the needle is raised, wherein the first to third cams are formed in a disc shape having the circular cross section and respectively and eccentrically provided to the first to third driving shafts so as to rotate, a ring-shaped housing having an inner diameter larger than the outer diameters of the first to third cams is provided and fixed to the lower ends of the first to third movable bars, a bearing is provided among the outer diameters of the first to third cams and the inner diameter of the housing, and the first to third driving shafts are respectively driven by a servo-motor capable of controlling the rotational speed in multiple stages even in one rotation according to a control signal.

Description

Driving Structure of Knitting Apparatus Using Cam with Circular Section

The present invention relates to a driving structure of a knitting apparatus using a cam having a circular cross section, and more specifically, while the knitting operation by the reciprocating motion of the guide bar, the needle bar and the fabric guide bar using the cam of the conventional non-circular cross section. The present invention relates to a driving structure of a knitting device using a cam with a circular cross section, which was developed to solve the problem of noise, production increase, and the need to replace the cam when changing the knitting method.

Among the knitting devices for weaving cloth, the cam knitting mechanism includes a guide bar for moving the yarn position to the left and right, a needle bar for moving the needle up and down, and a fabric guide bar for catching the fabric rising along the needle during the knitting process. Horizontal and vertical reciprocating motion

The reciprocating motion in the horizontal and vertical directions is implemented by a cam mounted on a rotating drive shaft and connected to a movable bar that moves up and down in close contact with the cap.

6 is a conceptual view showing a cam and a movable bar used in the conventional knitting device, the cam (2) mounted on the drive shaft (1) has a non-circular cross section, the roller 31 is formed at the lower end of the movable bar (3) It is comprised so that it can go up and down according to the rotation of the cam 2, reducing the friction force with the cam 2.

However, the roller 31 in close contact with the rotating cam 2 may reduce friction and reduce noise, but as the rotational speed increases, the noise that is closely spaced from the cam 2 and then closely adheres to each other according to a section is generated. The noise generated by the dozens of cams 2 provided in the knitting device is such that it is difficult to have a normal conversation around.

In addition, when changing the knitting method has to be equipped with a different shape of the cam (2) there was a disadvantage in that the work of replacing it.

(Patent Document 1) (Patent Document 1) Korean Patent Registration No. 10-0123194-0000 (September 11, 1997)

(Patent Document 2) (Patent Document 2) Korea Patent Registration No. 10-0819948-0000 (March 31, 2008)

(Patent Document 3) (Patent Document 3) Korean Patent Registration No. 10-1190698-0000 (October 08, 2012)

The present invention was developed to solve the above problems, the object of which is to remove the noise generated from the cam and the movable bar, and to switch to another knitting method to easily change the knitting method without replacing the cam when producing The present invention is to develop a driving structure of a knitting device using a cam having a circular cross section.

In order to achieve the above object, the present invention is a needle for raising and lowering the needle by the first movable bar that the lower end is interlocked to the first cam mounted on the first drive shaft of the lower so that the needle is raised and lowered at the position where the yarn is knitted A guide bar for moving the yarn guide from side to side at the top of the needle by a second movable bar having a lower end interlocked with a second cam mounted on the lower second drive shaft to change the position of the yarn from side to side; The sinker is leveled by a third movable bar having a lower end interlocked with a third cam mounted on the lower third drive shaft to change the position of the sinker left and right to prevent the fabric produced from rising when the needle is raised in the lateral direction. In the drive structure of the knitting device using a cam for driving the distal guide bar to move;

The first to third cams are formed in a disc shape having a circular cross section so as to be eccentrically mounted and rotated on the first to third drive shafts, respectively, and have inner diameters at the lower ends of the first to third movable bars. A ring-shaped housing having an inner diameter larger than the outer diameter of the three cams is mounted and fixed, and a bearing is mounted between the outer diameters of the first to third cams and the inner diameters of the housings, and the first to third driving shafts are respectively controlled. According to the signal is characterized in that it is driven by a servo-motor (servo-motor) that can control the rotational speed in multiple stages even in one revolution.

In addition, the third drive shaft is rotated at a constant speed by the AC motor, and provided with a plurality of sensor detection projections along the outer diameter surface;

A sensor fixing bracket further having a ring shape having an inner diameter larger than the diameter of the third drive shaft and having a sensing sensor corresponding to the sensor detecting protrusion;

It is characterized in that it is configured to control the servo motors respectively mounted on the first to second drive shaft by the rotation position and the speed detected by the sensor.

As described above, the present invention uses a cam having a circular cross section and is equipped with a ring-shaped housing at the bottom of the movable bar to move up and down according to the rotation of the cam by the bearing so that there is no noise to improve the work environment and work. There is an effect that can increase the efficiency.

In addition, even if the knitting method is changed, it is possible to knit in a different way just by changing the rotation controlled by the servomotor, there is an effect that can eliminate the inconvenience of replacing the cam.

1 is a conceptual diagram showing a driving structure of the knitting apparatus according to an embodiment of the present invention

2 is a conceptual diagram showing a knitting device according to an embodiment of the present invention

Figure 3 is a partial perspective view showing a connection structure of the cam and the movable bar according to an embodiment of the present invention

Figure 4 is a front view showing the connection structure of the cam and the movable bar according to an embodiment of the present invention

5 is a conceptual diagram showing the operation of the cam and the movable bar according to an embodiment of the present invention

6 is a conceptual view showing a cam and a movable bar used in the conventional knitting apparatus

7 is a conceptual diagram showing the operation of the cam and the movable bar according to another embodiment of the present invention

8 is a conceptual diagram showing a knitting device according to an embodiment of the present invention

Accordingly, the configuration of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily understand and reproduce.

1 is a conceptual diagram showing a driving structure of the knitting apparatus according to an embodiment of the present invention, Figure 2 is a conceptual diagram showing a knitting apparatus according to an embodiment of the present invention, the needle (5) in the position where the knitting yarn (5) A needle bar 41 for raising and lowering the needle 411 by a first movable bar 32 having a lower end interlocked with the first cam 21 mounted on the lower first drive shaft 11 so that the 411 moves up and down. ) And the needle 411 by a second movable bar 33 having a lower end interlocked with the second cam 22 mounted on the lower second drive shaft 12 so that the position of the yarn 5 can be changed left and right. Guide bar 42 to move the yarn guide 421 to the left and right at the top of the), and to hold the fabric 5 is not raised when the needle 411 rises in the lateral direction of the needle 411 Third movable in which the lower end is interlocked with the 3rd cam 23 attached to the lower 3rd drive shaft 12 so that the position of the sinker 431 may be changed to left and right. In the singka 431 by 34 by the driving structure of a knitting apparatus using a cam for driving the cloth guide bar 43 to move horizontally;

The first to

third cams

21, 22, and 23 are formed in a disc shape having a circular cross section so as to be eccentrically mounted and rotated on the first to

third drive shafts

11, 12, and 13, respectively. At the lower end of the third to third

movable bars

32, 33, and 34, a ring-shaped housing 44 having an inner diameter larger than the outer diameter of the first to

third cams

21, 22, and 23 is mounted and fixed. The drive structure of the knitting device using a cam having a circular cross section is characterized in that the bearing 45 is configured to be mounted between the outer diameter of the first to

third cams

21, 22, 23 and the inner diameter of the housing 44. It was.

The present application solves the problem that when a general cam having a non-circular cross section is used, the noise generated while the movable bar is in close contact with the moving bar is not normally communicated, and the work efficiency of the worker working in such noise is inevitably deteriorated. It was developed for the purpose, the first to third cams (21, 22, 23) mounted on the first to third drive shaft (11, 12, 13) is mounted so as to have an eccentric and a circular cross section bearing here ( 45) and the housing 44 has been improved to the structure that can be mounted so that the noise can be minimized.

In addition, such a housing 44 has the advantage that it does not need a separate guide for holding the position of the first to third drive shaft (11, 12, 13).

In the drawings, the shape of the two needle bar 41 and the guide bar 42 and one fabric guide bar 43 is shown, but these shapes are arranged at regular intervals back and forth to form one knitting device (4) The first to

third drive shafts

11, 12, and 13 extend long to sequentially mount any one of the first to

third cams

21, 22, and 23.

Figure 3 is a partial perspective view showing a connection structure of the cam and the movable bar according to an embodiment of the present invention, Figure 4 is a front view showing a connection structure of the cam and the movable bar according to an embodiment of the present invention, Figure 5 is As a conceptual diagram showing the operation of the cam and the movable bar according to an embodiment of the present invention, first, the first to third drive shafts (11, 12, 13) for the convenience of the first to third cams (21, 22) as the drive shaft (1) And 23 are cams 2 and the first to third

movable bars

32, 33, and 34 are described as movable bars 3.

In the present invention, the first to the third drive shaft (11, 12, 13) is driven by a servo-motor (46; servo-motor) which can control the rotational speed in multiple stages even in one revolution according to the control signal An example is shown further.

The servo motor 46 is already used in various fields, but if applied to the present application, the section b in FIG. 4 is in a state where the movable bar 3 is raised and stopped, and the section c is in a state where the movable bar 3 is lowered. When rotating counterclockwise, section a1 is the rising section and a2 is the falling section.

In addition, the servomotor 46 of the present application may arbitrarily stop or drive each section of a1, a2, b, and c, and may stop or drive at any point of 360 degrees.

In this case, the needle bar 41, the guide bar 52, and the fabric guide bar 43, for example, the needle 411 is a fabric guide bar 43 for horizontal reciprocating motion in order to achieve optimal operation. The section that does not rise so as to rotate slowly so that it can be held stably, and the rest of the section rotates quickly so that the driving speed of the device does not need to be slow.

Therefore, in the related art, the speed of each of the sections is controlled by adjusting the shape of the cam of the non-circular cross section, but when the circular cross section is provided, the speed control is not easy.

Therefore, the servo motor 46 of the present application enables the efficient movement of each device by making such speed control according to a control signal, and when the production is switched to a different knitting method, various changes can be made without replacing the cam as the control signal is changed. There is an effect that the knitting method can be implemented in one device.

7 is a conceptual view showing the operation of the cam and the movable bar according to another embodiment of the present invention, Figure 8 is a conceptual view showing a knitting apparatus according to an embodiment of the present invention, the third drive shaft 13 is the AC motor It rotates at a constant speed by a plurality, and has a plurality of sensor detecting projections 14 along the outer diameter surface;

Further comprising a sensor fixing bracket (16) having a ring shape having an inner diameter larger than the diameter of the third drive shaft (13) and having a sensing sensor (15) corresponding to the sensor detecting protrusion (14). ;

An embodiment of the present invention is characterized in that it is configured to control the servomotors 46 mounted on the first to

second driving shafts

11 and 12, respectively, by the rotational position and the speed detected by the sensing sensor 15.

In general, the knitting operation is easily performed when the needle 411 is raised to maintain the stop state for a while. As the third driving shaft 13 rotates, the driving of the first to

second driving shafts

11 and 12 stops for a while. The servo motor 46 is operated to maintain the state so that the plurality of detection sensors 15 of the present application detect the relative rotated position of the third drive shaft 13 to control the servo motor 46.

In addition, in the drawings, the four sensor sensors 15 are disposed at 90-degree intervals as an example, but the interval and the number of sensors may vary according to the type and situation of knitting.

1: drive shaft

11: first drive shaft

12: second drive shaft

13: third drive shaft

14: sensor detection projection

15: detection sensor

16: sensor fixing bracket

2: Cam

21: first cam

22: second cam

23; 3rd cam

3: movable bar

31: roller

32: first movable bar

33: second movable bar

34: third movable bar

4: Knitting Apparatus

41: needle bar

411: needle

42: guide bar

421: Yarn Guide

43: fabric guide bar

431: Sinka

44: housing

45: bearing

46: servo motor

5: fabric

Claims

The needle (by the first movable bar 32 in which the lower end cooperates with the first cam 21 mounted on the lower first drive shaft 11 so that the needle 411 moves up and down at the position where the yarn 5 is knitted) The lower end is interlocked with the needle bar 41 for allowing the 411 to move up and down, and the second cam 22 mounted on the lower second drive shaft 12 so that the position of the yarn 5 can be changed left and right. 2 a guide bar 42 for moving the yarn guide 421 from side to side at the top of the needle 411 by the movable bar 33 and a yarn when the needle 411 is raised in the lateral direction of the needle 411. Third movable bar 34 having a lower end interlocked with a third cam 23 mounted on a lower third drive shaft 12 so as to change the position of the sinker 431 to the left and right to hold (5) not to rise. In the drive structure of the knitting device using a cam for driving the distal guide bar 43 to move the sinker 431 horizontally by;

The first to third cams 21, 22, and 23 are formed in a disc shape having a circular cross section so as to be eccentrically mounted and rotated on the first to third drive shafts 11, 12, and 13, respectively. At the lower end of the third to third movable bars 32, 33, and 34, a ring-shaped housing 44 having an inner diameter larger than the outer diameter of the first to third cams 21, 22, and 23 is mounted and fixed. The bearing 45 is mounted between the outer diameters of the first to third cams 21, 22, and 23 and the inner diameter of the housing 44, and the first to third drive shafts 11, 12, and 13 are respectively Drive structure of a knitting device using a cam with a circular cross section, characterized in that driven by a servo motor (46; servo-motor) that can control the rotational speed in multiple stages in one revolution according to the control signal.
3. The third drive shaft (13) according to claim 1, wherein the third drive shaft (13) rotates at a constant speed by the AC motor and includes a plurality of sensor detection protrusions (14) along the outer diameter surface;

Further comprising a sensor fixing bracket (16) having a ring shape having an inner diameter larger than the diameter of the third drive shaft (13) and having a sensing sensor (15) corresponding to the sensor detecting protrusion (14). ;

Using a cam having a circular cross section, characterized in that configured to control the servo motor 46 mounted on the first to second drive shaft (11, 12), respectively, by the rotational position and speed detected by the sensor 15 Driving structure of knitting machine.