KR950002821B1 - Circular knitting machine - Google Patents

Abstract

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Description

Circular knitting machine

1 is a half longitudinal cross-sectional view of a circular knitting machine showing an embodiment of the present invention.

2 is a half longitudinal section of the rotating cylinder.

3 is a half longitudinal section of the fixed cylinder.

4 is a cross-sectional view taken along the line I-I of FIG. 1;

5 is a cross-sectional view of the coil and the slider.

6 is a longitudinal sectional view of the coil and the slider.

7 is an enlarged front view of the main part of the slider and the linear guide.

8 is an enlarged perspective view of the main part of the coil.

9 is a front view of the coil.

10 is a block diagram of a circular knitting machine.

11 is an explanatory diagram of an excitation pattern of a coil.

12 is a partially enlarged cross-sectional view of the fixed cylinder and the rotating cylinder.

13 is an explanatory diagram showing a relationship between coils and sliders in rows a to d.

14 is an explanatory diagram showing a relationship between coils and sliders in rows e to g.

15 is a perspective view of the upper portion of the rotating cylinder.

16 is a longitudinal sectional view showing a state where the needles are lowered.

17 is a longitudinal sectional view showing a state in which the needles are raised;

* Explanation of symbols for main parts of the drawings

10: circular knitting machine 12: fixed cylinder

13 base portion 14 cooling fins

16: coil 18: rotating cylinder

26: cavity 28: slider

30: linear guide 34: needle

38: iron core 40: coil winding

46: servo motor 50: rotation speed detection device

52: converter 56: driver pattern control device

The present invention relates to a circular knitting machine.

The basic structure for vertical movement of the needle of the circular knitting machine is to install the needle actuating cam in the lower portion of the needle cylinder and rotate the needle cylinder so that the needles move up and down along the shape of the needle actuating cam. The structure has not changed.

As described above, the movement of the needle up and down has the following problems because it is determined by the shape of the needle operation cam.

① The needle movement is regulated by the shape of the needle operation cam.

For example, depending on the shape of the adjacent needle actuating cam, it may not be possible to physically make a desired movement.

② If you want to change the needle movement, you need to replace the needle operation cam.

The exchange of this needle operation cam is very complicated, so once you set your movement, you can hardly change it to another movement.

③ For the inspection of the circular knitting machine not working properly, it is necessary to check whether the shape of the needle operation cam is worn out due to wear, etc. This mechanical structure is a big problem in the maintenance of circular knitting machine.

Thus, the present invention provides a circular knitting machine that does not use the needle operation cam at all.

The circular knitting machine according to claim 1 of the present invention is a fixed cylinder, a rotating body disposed in the fixed cylinder and rotates coaxially with the fixed cylinder, a plurality of coils disposed on the inner circumferential surface of the fixed cylinder, A plurality of sliders installed so as to slide freely in the vertical direction along the outer circumferential surface of the rotating body and sliding in the vertical direction by the excitation of the coil, needles installed at the upper end of the slider, and the plurality of the And coil driving means for exciting the coil and driving means for rotating the rotor.

The circular knitting machine of claim 2 is the circular knitting machine of claim 1, wherein the plurality of coils are arranged in a lattice shape with the inner circumferential surface of the stationary cylinder deployed, and the coil excitation means is arranged in a lattice shape. By generating the magnetic force by exciting the upper coil in a staircase shape in order along the rotational direction of the rotating body among the coils, the coil installed in the rotating rotating body passes the position of the excited coil. The rotating body that is rotated by raising upward by the magnetic force of the coil or the coil exciting means generates magnetic force by exciting the lower coil in a staircase shape sequentially in the lattice-shaped coils in the direction of rotation of the rotating body. When passing through the position of the excited coil the slider installed in the lower down by the magnetic force of the coil Will.

The circular knitting machine of claim 3 is a circular knitting machine of claim 2, wherein the circumferential data indicating a position in the circumferential direction of the fixed cylinder or the rotating cylinder for moving the needle up and down, and in the circumferential position Input means for inputting distance data indicating an up and down distance for vertically moving a needle; coil excitation determining means for determining coils to be excited among the plurality of coils based on circumferential direction data and distance data input by the input means; And coil excitation control means for controlling the coil excitation means to excite the coil determined by the coil excitation determining means.

In the circular knitting machine of claim 1 of the present invention, a structure for vertically moving needles will be described.

The plurality of coils arranged on the inner circumferential surface of the fixed cylinder are excited by the coil exciting means.

In this state, the rotating body is rotated coaxially with the fixed cylinder inside the fixed cylinder.

The slider disposed on the outer circumferential surface of the rotor also rotates with the rotation of the rotor, and when the slider comes to the part of the excited coil, the slider moves up and down by the magnetic force of the coil. .

In the circular knitting machine of claim 1, the circular knitting machine of claim 2 is arranged in a lattice shape with a plurality of said coils in the state which developed the inner periphery of the said fixed body.

As a result, when the slider is slid upward, the upper coils are sequentially excited in a step shape among coils located in the rotational direction of the rotator, and when the slider is slid downward, the rotation of the rotator is rotated. Among the coils located in the direction, the lower coils are excited in sequence in a staircase shape.

The plurality of coils arranged on the inner circumferential surface of the fixed cylinder are excited by the coil exciting means. In this state, the rotating body rotates coaxially with the fixed cylinder inside the fixed cylinder. The slider disposed on the outer circumferential surface of the rotating body also rotates with the rotation of the rotating body, and when the slider comes to the part of the excited coil, the slider moves up and down by the magnetic force of the coil, whereby the needle installed at the upper end of the slider It also moves up and down.

The structure for moving the needles up and down in the circular knitting machine of claim 2 of the present invention will be described.

The plurality of coils are arranged in a grid shape in a state where the inner circumferential surface of the fixed cylinder is developed. In this case, when the slider is pulled up, the coil-exciting means rotates by exciting the upper coil in a stair-shaped sequence sequentially in the lattice-shaped coils in the lattice direction to generate a magnetic force. The slider mounted on the rotating body is lifted up by the magnetic force of the coil when passing through the position of the excited coil. Further, in the case of lowering the slider, the coil excitation means rotates by exciting the lower coil in a step shape in order to generate a magnetic force among the coils arranged in the shape of a lattice in the direction of rotation of the rotor. When passing through the position of the excited coil, the slider provided in the lower portion is lowered by the magnetic force of the coil.

The structure for moving the needles up and down in the circular knitting machine of claim 3 of the present invention will be described. Input means for the circumferential direction indicating the position in the circumferential direction of the fixed cylinder or the rotating cylinder for the vertical movement of the needle and the distance data indicating the up and down distance for moving the needle up and down in the circumferential direction as an input means . The coil excitation determining means determines a coil to be excited among the plurality of coils based on the circumferential direction data and the distance data input by the input means. The coil excitation control means controls the coil excitation means to excite the coil determined by the coil excitation determining means.

As a result, when the motion (circumference direction data and distance data) of the needles is input to the input means in accordance with the image of the socks, the coil excitation determining means excites from the circumferential position and the vertical distance inputted by the input means. Determine the coil, ie the excitation pattern. The coil excitation control means controls the coil excitation means to excite the coil in accordance with the excitation pattern.

As described above, the circular knitting machine of the present invention is a circular knitting machine using a structure of a linear motor using a coil and a slider without using a needle operating cam as in the prior art, and thus has no mechanical structure.

Therefore, the movement of the needle is not regulated by the shape of the needle operation cam, and also the maintenance is easy, and the movement of the needle is also easily changed only by changing the excitation pattern of the coil.

Hereinafter, a circular knitting machine 10 according to an embodiment of the present invention will be described with reference to the drawings.

"12" is a fixed cylinder.

The fixed cylinder 12 is completely fixed to the base portion 13.

On the outer circumferential surface of the fixed cylinder 12, a plurality of heat dissipation cooling fins 14 for dissipating heat of the fixed cylinder 12 are provided at a predetermined interval.

Moreover, several coils 16 are provided in the inner circumferential surface of the fixed cylinder 12.

The structure and arrangement of the coil 16 will be described later.

Reference numeral 18 denotes a rotating cylinder.

The rotary cylinder 18 is disposed in the fixed cylinder 12 so as to be coaxially rotatable with the fixed cylinder 12.

The lower end of the rotating cylinder 18 is provided with a timing pulley 20, and is rotatable by the radial bearing 22 and the thrust bearing 24.

The rotary cylinder 18 consists of the lower cylinder part 18a and the upper cylinder part 18b, and the diameter of the upper cylinder part 18b becomes thinner than the lower cylinder part 18a.

The central portion of the rotating cylinder 18 is formed with a cavity 26.

And when the thread S is supplied from the upper side of the rotating cylinder 18 and the cloth is woven, the finished cloth is stored in the cavity 26. In addition, the rotating cylinder 18 rotates by the timing pulley 20 rotating by the servomotor 46 (refer FIG. 2). That is, the inside of the fixed cylinder 12 is rotated by forcibly rotating by the servomotor 46.

Reference numeral 28 denotes a slider provided in plural intervals on the outer circumferential surface of the lower cylinder portion 18a.

The slider 28 is supported by the pair of linear guides 30 and 30 so that it can move up and down.

Further, reference numeral 34 denotes needles having a plurality of spaced intervals on the outer circumferential surface of the upper cylinder portion 18b.

These needles 34 are linked to the upper end of the slider 28 by a link 32.

200 sliders 28 and the needles 34 are provided in the whole periphery.

The number of the sliders 28 may be provided in accordance with the number of the needles 34, for example, 80 to 200.

However, when the circular knitting machine becomes larger, the number of the sliders 28 is increased to 200 or more accordingly.

The link 32 is rotatable vertically about the point 36 on the upper surface of the lower cylinder portion 18a. When the slider 28 is moved upward, the link 32 is rotated so that the needle 34 is lowered. Is moved to.

The structure of the slider 28 and the linear guide 30 is mentioned later.

Here, the structure in which the needles 34 vertically move will be described in detail. On the upper surface of the lower cylinder 18a, a plurality of holes 100 are provided radially at equal intervals.

A link 32 is disposed in the approximately horizontal direction in each hole 100, and the link 32 is free to rotate about the point 36 (see FIGS. 15 and 16). The upper end of the slider 28 arranged in the vertical direction is connected to the outer end 32a of the link 32. The lower end of the needle 34 disposed in the vertical direction is connected to the inner end 32b of the link 32. And as shown in FIG. 17, when the slider 28 raises, the outer end part 32a of the link 32 will raise, and the inner end part 32b of the link 32 will fall by this principle. When the inner end 32b of the link 32 descends, the needle 34 also descends. Also, the needle 34 is raised when the slider 28 is lowered.

The structure of the coil 16 is demonstrated.

As shown in FIG. 8, as shown in FIG. 8, the iron core 38 protrudes inward from the inner circumferential surface of the fixed cylinder 18, and the coil winding 40 is wound around the iron core 38. As shown in FIG. .

The coil 16 is excited as a current flows through the coil winding 40.

In the state in which the coil 16 of the above-described configuration has developed the inner circumferential surface of the fixed cylinder 12, as shown in FIG. 9, the longitudinal direction is vertically arranged in the vertical direction and the horizontal direction (rotation) Direction) is arranged horizontally (hereinafter the arrangement is simply referred to as " lattice-like arrangement ").

That is, several coils 16 are provided at equal intervals along the rotational direction.

The number of longitudinal directions of the coil 16 is about 24, and the number of rotation directions of the coil 16 is about 200.

Increasing the number of longitudinal and rotational directions of the coil 16 (i.e., the number per unit area of the coil 16) allows the needle 34 to move smoothly accordingly.

The structure of the slider 28 and the linear guide 30 is demonstrated.

A pair of linear guides 30 and 30 are provided in the longitudinal direction on the outer circumferential surface of the rotating cylinder 18 and grooves 29 on both sides of the slider 28 between the pair of linear guides 30 and 30. This fitting is provided so that the slider 28 can move up and down with respect to the outer peripheral surface of the rotating cylinder 18 (refer FIG. 5).

The outer surface part of the slider 28 is formed in the uneven | corrugated shape, and has a structure which is easy to receive the magnetic force in the coil 16. As shown in FIG.

In other words, the pair of linear motors is formed by the coil 16 and the slider 28.

The distance L between the coil 16 and the slider 28 is extended by 0.5 mm to 1.5 mm (see FIG. 6).

The control structure of the circular knitting machine 10 is demonstrated with reference to the block diagram of FIG.

Reference numeral 44 denotes an excitation device for exciting multiple coils 16.

The excitation device 44 may separately excite the coils 16.

Reference numeral 46 is a servomotor for rotating the rotating cylinder 18 through the timing pulley 20.

Reference numeral 48 is a drive circuit for rotating the servomotor 46.

Reference numeral "50" denotes a rotation speed detection device such as an encoder that detects the rotation speed and rotation angle of the servomotor 46.

The rotation speed signal detected by the rotation speed detection device 50 is sent to the drive means 48, and is feedback-controlled so that the servomotor 46 always rotates at a predetermined speed.

Reference numeral 52 denotes a converter for converting an image of a design obtained from a system such as a design design system into movement of the needle 34 of the circular knitting machine 10.

The converting device 52 has an external storage device such as a Profibus disk and inputs data of a design of a design such as a sock constituted by a design design system to the converting device 52 through this external storage device.

Converter 52 converts the movement of 34 for needle operation.

Reference numeral 54 denotes a setting device for converting the data converted into the movement of the needle 34 by the converter 52 into the excitation pattern of the coil 16 again.

Reference numeral 56 denotes a driver pattern control device that controls the excitation device 44 based on the excitation pattern of the coil determined by the setting device 54.

In addition, the converter 52 for converting an image of a sock, etc., determined by the design design system into the movement of the needle 34, can use a conventional converter.

Next, operation states of the setting device 54, the driver pattern control device 56, and the excitation device 44 will be described with reference to FIG.

11 (a) shows the position of the needle 34, the vertical axis represents the position in the longitudinal direction, and the horizontal axis represents the position in the rotation direction.

11 (b) shows the position of the slider 28, the vertical axis | shaft has shown the longitudinal position, and the horizontal axis has shown the position of the rotation direction.

FIG. 11 (c) shows the excitation pattern of the nose 16. FIG.

The vertical axis represents the position of the coil 16 in the longitudinal direction, and the horizontal axis represents the position of the coil 16 in the rotation direction.

In the case of specifying the coil 16, the longitudinal directions in the drawings are A, B,... And rotation direction a, b,… It is specified as, for example, such as the coil 16 of (A, a).

In addition, for simplicity, the operation of moving one needle 34 downward and then raising it again will be described.

Moving the needle 34 downward and raising again refers to a state in which the slider 28 is once raised and then moved downward again.

Therefore, as the rotary cylinder 18 is rotated, the excitation pattern of the coil 16 should be controlled so that the slider 28 moves upwards and downwards.

For this purpose, the excitation pattern of the coil 16 is formed by the coil 16 in the oblique portion of Fig. 11 (c), for example, (A, b) (B, b). (E, j)... Woman back.

That is, since the plurality of coils 16 are arranged in a lattice shape in a state where the inner circumferential surface of the fixed cylinder 18 is unfolded, when the slider 28 is slid upward, the rotary cylinder 18 is rotated in the rotational direction. Among the coils 16, which are located, the upper coils 16 are sequentially excited in a step shape.

In the case where the slider 28 is slid downward, the lower coil 16 is sequentially excited in a step shape among coils located in the rotational direction of the rotating cylinder 18.

When the rotary cylinder 18 is rotated from the rotation direction (a) position to the coil 16 in the rotation direction (i) position by exciting these coils 16, the slider 28 is attracted to the excited coil 16. The slider 28 reaches its highest point by moving upwards and finally attracted to the coil C16 of (F, i).

In addition, when the rotating cylinder 18 is rotated from the rotation direction (i) position to the coil 16 in the rotation direction (p) position, the slider 28 is attracted to the coil 16 where (E, j) and the like are excited. It moves down.

As a result, the slider 28 is moved upward in accordance with the rotation of the rotary cylinder 18.

The relationship between the coil 16 and the slider 28 is demonstrated in more detail based on FIGS. 12-14. In addition, in order to simplify description in FIG. 12, only one slider 28 was described. 13 and 14, the positive direction of the Z axis is above the rotating cylinder 18. As shown in FIG.

(1) Excitation of coil b and coil B is performed.

The slider 28 rotates from the position opposite to the coils in row a to the position opposite to the coils in row b (see FIG. 12). The projections 1 to 4 of the slider 28 are stopped at a position where the suction force is balanced between the coils A and B (see also the thirteenth (b)).

(2) Excite coil A, coil B and coil C in column c.

The slider 28 rotates from a position opposite to the coils in row b to a position opposite to the coils in row c. The projections 5, 6 of the slider 28 are attracted to the coil C, and the slider 28 moves in the positive direction (upper side) of the Z axis. And it stops at the position where the balance of the suction force of the coil A, the coil B, and the coil C is correct (refer also to 13th (c)).

(3) Excise coil B and coil C in column d.

The slider 28 rotates from the position opposite to the coils in column c to the position opposite to the coils in column d. The suction force to the protrusions 1 and 2 of the slider 28 disappears, and the protrusions 3 to 6 of the slider 28 are attracted to the coil B and the coil C, and are moved in the positive direction (upward) of the Z axis. Move. And it stops in the position where the balance of the suction force of the coil B and the coil C is correct (refer also to 13th (d)).

(4) The coil B, the coil C, and the coil D of the e row are excited.

The slider 28 rotates from the position which opposes the coil of the d row to the position which opposes the coil of the e row. The projections 7 and 8 of the slider 28 are attracted to the coil D and the slider 28 moves in the positive direction (upper side) of the Z axis. And it stops at the position where the balance of the suction force of the coil B, the coil C, and the coil D is correct (refer also to 14th (e)).

(5) The coil C and coil D of f column are excited.

The slider 28 rotates from the position which opposes the coils of row e to each other to the position which opposes the coils of row f. The suction force to the projections 3 and 4 of the slider 28 disappears, and the projections 5 to 8 of the slider 28 are attracted to the coils C and D and are moved in the positive direction (upward) of the Z axis. Move. And it stops at the position where the balance of the suction force of the coil C and the coil D is correct (refer also to 14th (f)).

(6) The coil C, the coil D, and the coil E of the g row are excited.

The slider 28 rotates from the position facing the coils in row f to the position facing the coils in row g. The projections 9 and 10 of the slider 28 are attracted to the coil E and the slider 28 moves in the positive direction (upper side) of the Z axis. And it stops at the position where the balance of the suction force of the coil C, the coil D, and the coil F is correct (refer also to 14th (g)).

As described above, when the slider 28 is raised by the excitation of the coil 16, but the slider 28 is to be lowered, an opposite excitation operation may be performed.

In addition, in order to accurately grasp the positional relationship between the coil 16 and the slider 28, as shown in FIG. 4, one reference coil 16A is set, and the reference slider 28A as the reference for the slider 28 is also defined. Set the.

The setting device 54 grasps the positional relationship between the coil 16 and the slider 28 according to the timing at which the reference slider 28A has passed the reference coil 16A and the detection signal from the rotation speed detection device 50. .

Therefore, the excitation pattern of the coil 16 and the movement of the slider 28 have a one-to-one relationship, thereby completing the fabric according to the design.

Accordingly, for example, the rotational cylinder 18 can be changed by the rotation speed detecting device 50 after 10 rotations, thereby changing the design pattern.

According to the circular knitting machine 10 of the present embodiment, not only the needle 34 is moved using the needle operation cam as in the related art but also a combination of a plurality of coils 16 and a slider 28, that is, a structure of a linear motor is used. Therefore, since the needle 34 is moved up and down, there is no mechanical structure and management can be easily performed.

In addition, when changing the movement of the needle 34, it can be easily changed only by changing the excitation pattern of the coil 16. FIG.

Claims (3)

A fixed cylinder, a rotating body disposed in the fixed cylinder and rotating coaxially with the fixed cylinder, a plurality of coils disposed on an inner circumferential surface of the fixed cylinder, and a vertical direction along an outer circumferential surface of the rotating body A plurality of sliders installed so as to be able to slide freely and sliding in an up-down direction by excitation of the coil, needles provided at an upper end of the slider, coil excitation means for exciting the plurality of coils, and the rotating body Circular knitting machine, characterized in that consisting of a drive means for rotating. The coil according to claim 1, wherein the plurality of coils are arranged in a grid shape in a state in which the inner circumferential surface of the fixed cylinder is deployed, and the coil excitation means is arranged along a rotational direction of the rotating body among the coils arranged in the grid shape. By generating the magnetic force by exciting the upper coil in a staircase order in turn, the slider provided on the rotating rotating body is lifted up by the magnetic force of the coil when passing through the position of the excited coil, and further, the coil excitation. The means generates a magnetic force by exciting the coil downwardly in a step shape in the lattice-shaped coils sequentially in the lattice-shaped coils, thereby positioning the slider provided on the rotating body which rotates. The circular knitting machine, characterized in that to fall down by the magnetic force of the coil when passing through. The circumferential data indicating a position in the circumferential direction of the fixed cylinder or the rotating cylinder for vertical movement of the needles, and the distance data indicating the vertical distance for moving the needles in the circumferential direction. Deciding means for deciding coils to be excited among the plurality of coils based on input means for input, circumferential direction data and distance data input by the input means, and coils for exciting the coil determined by the coil excitation determining means. And a coil excitation control means for controlling the excitation means.