JP2000345450A - Dust removing apparatus of flat knitting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dust removing apparatus of a flat knitting machine, which enables dust removing motion of a suction pipe to be set independently of a carriage and enables the wear, damage or the like on a belt transferring the suction pipe to be reduced. SOLUTION: In a dust removing apparatus of a flat knitting machine where a ring-like belt 8 is wound around rollers 7 located at both ends of a front opening-type suction box 6 attached to a flat knitting machine, a suction pipe 9 is attached to the belt 8 on the front side of the box 6 and a suction device 13 is coupled with the box 6, this apparatus is equipped with a driving means 10 for driving the rollers 7 to rotate and a controller 2 for controlling the drive of the means 10 independently of a knitting operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an apparatus for removing dust from a knitting opening of a flat knitting machine.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication No. 7-229040 discloses a "dust removing device for a flat knitting machine". In a flat knitting machine having a carriage, a suction tube is fixed to the carriage and suction is performed as the carriage moves during knitting. It discloses reciprocating a tube with an endless belt. The suction pipe sucks and removes dust such as lint, fluff, fluff and the like generated at the knitting site, that is, the knitting position and its surroundings while moving, and removes it from the position.

[0003]

According to the prior art described above, the suction tube is integrated with the carriage, so that it performs only a movement completely coincident with the movement of the carriage. For this reason,
The following problems occur.

(1) In a recent flat knitting machine, the moving speed of the carriage is very high, and the needle tube is hard to remove dust due to the fast movement of the suction tube.

(2) In a flat knitting machine, the knitting position becomes fine between several stitches in the knitting direction depending on the knitted fabric structure to be knitted, such as formation of a twist stitch, and the carriage moves several times at the knitting position between several stitches. May reciprocate.
Further, the fine reciprocating movement may be frequently performed during knitting of one course. In this case, with the reciprocating movement of the suction tube due to the reciprocating movement of the carriage, the endless belt also slides back and forth with respect to the suction box, so that the sliding amount of the endless belt increases. Further, the load applied to the endless belt due to fine acceleration / deceleration becomes large. As a result, abrasion of the endless belt is promoted, durability is reduced, and there is a possibility of causing breakage. Also, with the wear and breakage of the endless belt, air leakage (inflow of outside air) may occur from the contact surface between the suction box and the endless belt, leading to a decrease in suction force and a state where dust is not sufficiently removed. There is also.

(3) According to the above apparatus, since the suction tube is integrated with the carriage, the reciprocating movement of the carriage is always required when the suction tube is reciprocated, so that only the suction tube can be moved independently. For this reason, there is a limit to the mode of reciprocation of the suction tube.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a dust removing device for a flat knitting machine, in which a dust removing operation by a suction pipe can be set independently of control of a knitting speed and a knitting position in knitting. The purpose of the present invention is to reduce wear and breakage of the belt that moves the belt.

[0008]

The present invention is based on the following dust removing device (1) for a flat knitting machine. The dust removing device (1) of a flat knitting machine has rollers (7) rotatably mounted on both ends of a front opening type suction box (6) attached to the flat knitting machine (2). A belt (8) is wrapped around the belt, the opening (6a) of the suction box (6) is closed by the belt (8), and a suction pipe (9) is attached to the belt (8) in front of the suction box (6). Attachment, the suction port (9a) of the suction pipe (9) faces the knitting port (4) of the flat knitting machine (2), and the inside of the suction pipe (9) communicates with the inside of the suction box (6), A suction device (13) is connected to the suction box (6).

Then, a dust removing device for a flat knitting machine (1)
Includes a driving means (10) for driving the roller (7) to rotate forward and reverse, and a control means (20) for controlling the rotation of the driving means (10) independently of knitting. Prepare.

The control means (20) controls the rotation of the driving means (10) so as to move the suction pipe (9) at a constant speed for each course in conjunction with the switching of the course during knitting. .

In another embodiment, the control means (20) comprises:
A driving means (10) for moving the suction pipe (9) at a speed corresponding to each knitting mode with respect to a plurality of knitting modes existing in the course in conjunction with the course switching at the time of knitting.
To control the rotation of

The control means (20) includes a first rotation control unit (21) for controlling the rotation of the driving means (10) such that the suction pipe moves so as to follow a change in the knitting position in the course during knitting. ) And a second rotation control section (22) for controlling the rotation of the driving means (10) so that the suction pipe moves at a moving speed set independently of the change of the knitting position.

The first rotation control section (21) and the second rotation control section (22) are activated according to a change in the knitting mode in each course.

Further, in the above embodiment, the dust removing device (1) for a flat knitting machine is a flat knitting machine (2) having a plurality of needle beds (3), and a suction box is provided for each needle bed (3). (6) and a suction tube (9).

[0015]

FIG. 1 shows a dust removing device 1 of a flat knitting machine according to the present invention as an example assembled to a carriageless knitting machine 2. The carriageless type flat knitting machine 2 performs a knitting operation at a knitting opening 4 between the front and rear needle beds 3 by driving a knitting needle (not shown) by an actuator for each individual knitting needle at the front and rear needle beds 3. .

The dust removing device 1 of the flat knitting machine of the present invention is attached to the front and rear needle beds 3 by stays 5. FIGS. 2, 3, and 4 in addition to FIG. 1 show a specific configuration of the dust removing device 1 of the flat knitting machine of the present invention. The dust removing device 1 of the flat knitting machine includes a suction box 6, a roller 7, a belt 8, a suction pipe 9, a motor 10 as a driving unit, a suction device 13, and the like.

The suction boxes 6 are front opening type boxes each having a length corresponding to the maximum knitting width, with the knitting opening 4 at the front, at the position of each needle bed 3, and stays 5 at the left and right ends.
And is connected to a suction device 13 such as a blower by a hose 11 attached to the bottom surface, for example. The pair of rollers 7 are rotatably mounted on the stay 5 by roller shafts 12 at both ends of the suction box 6, and the annular flat belt 8 is wound around these rollers 7 in an endless manner. The opening 6a of the suction box 6 is closed by the opening on the front surface of the suction box 6. The motor 10 as a driving means is attached to, for example, one of the stays 5 and rotates the roller 7 reciprocally via gears 14 and 15.

The suction pipe 9 is provided on the front side of the suction box 6.
It is fixed to the belt 8 by a guide 16. The suction port 9a at the tip of the suction pipe 9 faces the knitting port 4 and its periphery, and the inside of the suction pipe 9 communicates with the inside of the suction box 6 by a communication path 17 formed in a guide 16. I have. The guide 16 has guide grooves 18 at upper and lower positions, and smoothly moves along the guide rails 19 formed above and below the opening 6 a of the suction box 6 at the guide grooves 18. It has become.

The control means 20 is linked with the course switching at the time of knitting, and at the time of knitting the corresponding course,
As the suction pipe 9 moves over this knitting section,
The rotation of the motor 10 is controlled. At this time, the control means 20
Is based on drive control data (rotation direction, rotation speed and rotation amount (movement amount of suction pipe 9)) set separately from knitting information set for each course.
Control. That is, the control means 20 controls the motor 10 independently of the knitting. The rotation speed of the motor 10 set as the drive control data is:
It is assumed that the suction pipe 9 is set to move at a constant speed in the knitting section of the corresponding course.

Note that the control independent of knitting in the above does not mean that the movement of the suction pipe 9 does not follow a change in knitting position at all, and that the control is not performed based on knitting position information or the like. In other words, as a result of the control, the movement of the suction pipe 9 may follow a change in the knitting position partially or entirely in the knitting of each course.

The drive control data of the motor 10 is set in the knitting control unit 25. Further, the knitting control unit 25 is given information necessary for knitting from the knitting information setting unit 26. Accordingly, the knitting control unit 25 sends the drive control data corresponding to the knitting course to the control means 20 in conjunction with the switching of the course during knitting, and the control means 20 controls the rotation of the motor 10 based on this. Control. Note that the set speed may be different for each course or for each knitting direction as long as it is constant within the knitting of one course, or may be the same for a plurality of courses or for all courses. You may.

At the time of knitting, each knitting needle (not shown) is controlled by a knitting control unit 25 based on knitting information from a knitting information setting unit 26.
As a result, the knitting operation is performed sequentially from those located at the end of the knitting section. As a result, the knitting position repeats reciprocating movement for each course over the knitting section. At this time, the control means 20 drives the rotation of the motor 10 based on the set drive control data in conjunction with the course switching at the time of knitting, so as to correspond to the movement of the knitting position in the knitting section, The suction tube 9 is reciprocated at a constant speed.

As a result, dust generated around the knitting opening 4 at the knitting position is sucked from the suction pipe 9 by the suction action of the suction device 13 and is removed from around the knitting opening 4 and the needle bed 3. . Since the suction action of the suction pipe 9 extends over several stitches, a sufficient dust effect can be obtained even when the movement of the suction pipe 9 does not exactly follow the change in the knitting position.

FIG. 5 shows another specific example of the control means 20 of the motor 10 as the driving means. In FIG. 5, the control means 20 includes a first rotation control unit 21 and a second rotation control unit 21.
It has a rotation control unit 22. The first rotation control unit 21 and the second rotation control unit 22 are respectively connected on the input side to the input setting unit 23 and the knitting control unit 25, and on the output side as driving means via the driving unit 24. Motor 10
It is connected to the.

Various information necessary for knitting is given to the first rotation control unit 21 and the second rotation control unit 22 via the knitting control unit 25 based on the input by the knitting information setting unit 26. Each drive control data of the motor 10 used for the control by the first rotation control unit 21 and the second rotation control unit 22 is set by the input setting unit 23, and the first rotation control unit 21 and the second rotation control unit 22 Given to each of

Here, the drive control data given to the first rotation control unit 21 is the one in which the rotation speed of the motor 10 is set so that the movement of the suction pipe 9 follows the change of the knitting position in the knitting direction. . That is, the rotation speed of the motor 10 is set to correspond to the knitting speed.

The drive control data provided to the second rotation control unit 22 controls the rotation speed of the motor 10 so that the movement of the suction pipe 9 is independent and does not follow a change in the knitting position in the knitting direction. It is set. The rotation speed of the motor 10 at this time is arbitrarily set in consideration of a change in the knitting position, and includes, for example, deceleration movement, stop, and the like.

The first rotation control unit 21 and the second rotation control unit 22 operate alternatively in response to a command from the knitting control unit 25 based on knitting information. Then, the driving unit 24 includes the first
The motor 10 is driven by receiving an output from the rotation control unit 21 or the second rotation control unit 22.

In the knitting, when two or more knitting modes are mixed, for example, when a knitted fabric made of a sheet of jersey includes portions knitted in another knitting mode, the knitting control unit 25 In knitting of the course, a command signal is output to the first rotation control unit 21 when knitting by sheeting is performed, and to the second rotation control unit 22 when knitting is performed in other knitting modes.

The first rotation control section 21 and the second rotation control section 22 operate in response to the command signal, whereby the motor 10 is operated in a knitting mode other than when knitting is being performed by sheeting. When the knitting is performed, the first and second rotation control units 21 and 22 are driven to rotate in the moving modes set respectively.

At this time, even when the rotation of the motor 10 is controlled by the second rotation control unit 22 which does not follow the change in the knitting position, the movement mode at this time is set in consideration of the change in the knitting position, and As described above, since the suction action of the suction pipe 9 extends over several needles, a sufficient dust removing effect can be obtained. Further, since the belt 8 does not reciprocate more than necessary, the sliding amount of the belt 8 can be set to a minimum,
Wear and damage of the belt 8 can be reduced.

In the above specific example, the first rotation control unit 21 and the second rotation control unit 22 each have one type of movement mode (speed). (Speed) may be set.

Further, as in the above specific example, the control for changing the rotation speed of the motor 10 in accordance with each knitting mode for a plurality of knitting modes existing in the course can be easily performed by software using a microcomputer. Can be realized.

In this specific example, the control means 20
A pressure monitoring unit 27 is provided. This pressure monitoring unit 27
The pressure sensor 28 detects a change in the pressure inside the suction box 6, and when an abnormal pressure drop is detected, turns on the alarm lamp 29.
A signal of pressure abnormality is sent to the second rotation control unit 22 and the knitting control unit 25.

According to this configuration, if the fly tube is clogged in the suction pipe 9 and the internal pressure of the suction box 6 decreases,
This state of the pressure drop is detected by the pressure sensor 28. At this time, the pressure monitoring unit 27 turns on the alarm lamp 29 and sends a signal of the state to the knitting control unit 25. Here, the knitting control unit 25 causes each of the control means (the first rotation control unit 21 and the second rotation control unit 22) to perform an appropriate stop operation or reduce the rotation speed of the motor 10 or the like. Perform processing.

Further, as shown in FIG. 1, in this specific example, an independent suction box 6 is provided for each needle bed 3.
Are provided, and one suction pipe 9 is provided for each suction box 6.
Is provided. For this reason, when fly waste clogging or the like occurs in each of the suction pipes 9, the negative pressure state inside the suction pipe 9 and the suction box 6 is further reduced. Cotton clogs are resolved naturally. Further, when the abnormal pressure drop continues, the above-described configuration makes it possible to easily detect this state by the pressure monitoring unit 27, thereby facilitating maintenance and inspection.

The present invention is not limited to a carriageless knitting machine, but can be applied to a knitting machine having a carriage.

[0038]

According to the present invention, the following effects can be obtained. In a dust removing device of a flat knitting machine, a driving unit for rotationally driving a belt and a roller integrated with a suction tube and a control unit for controlling the rotational driving of the driving unit are provided, and the suction tube is integrated with a carriage. , The speed at which the suction tube moves can be set freely, regardless of the moving speed of the carriage, and the reciprocating movement of the carriage etc. is not necessarily required when the suction tube reciprocates. Movement can be set independently. Therefore, if the speed of the suction tube is set low, wear of the belt and the like can be suppressed.

In an embodiment in which the control means interlocks with the switching of the course during knitting and controls the rotation of the driving means so as to move the suction pipe at a constant speed for each course, the suction pipe is moved to the minimum necessary degree. It can reciprocate, reducing the amount of sliding of the belt and suction box.Also, the load on the belt due to fine acceleration / deceleration can be suppressed, improving the durability of the belt and removing air from the contact surface between the suction box and the belt. Leakage (inflow of outside air) does not occur.

The control means controls the rotation of the driving means so as to move the suction pipe at a speed corresponding to each knitting mode for a plurality of knitting modes existing in the course in conjunction with the switching of the course during knitting. In this embodiment, the mode of the reciprocating movement of the suction tube can be selected according to the knitting structure. That is, according to the knitting mode in each course, the rotation control following the change in the knitting position and the rotation control not linked to the change in the knitting position can be alternatively selected. By selecting these rotation controls, the range of the reciprocating movement of the suction tube can be freely set within the necessary limit, so that excessive driving of the belt is not required, belt wear and damage can be reduced, and the motor can be reduced. The power required for driving the motor can also be saved.

According to the embodiment in which the dust removing device is installed for each needle bed, since one suction pipe is provided in the suction box, if the suction pipe becomes clogged with fly cotton, etc. Because the negative pressure condition of
Fuzz clogging and the like are eliminated naturally.

[Brief description of the drawings]

FIG. 1 is a side view of a flat knitting machine in which a dust removing device for a flat knitting machine of the present invention is assembled.

FIG. 2 is a partially cutaway front view of the dust removing device of the flat knitting machine.

FIG. 3 is a partially broken bottom view of the dust removing device of the flat knitting machine.

FIG. 4 is a sectional view of a dust removing device of the flat knitting machine.

FIG. 5 is a block diagram of a control unit according to another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Dust removal device of flat knitting machine 2 Flat knitting machine 3 Needle bed 4 Knitting opening 5 Stay 6 Suction box 6a Opening 7 Roller 8 Belt 9 Suction tube 9a Suction opening 10 Motor as drive means 11 Hose 12 Roller shaft 13 Suction device 14 Gear 15 Gear 16 Guide 17 Communication path 18 Guide groove 19 Guide rail 20 Control means 21 First rotation control unit 22 Second rotation control unit 23 Input setting unit 24 Drive unit 25 Knitting control unit 26 Knitting information setting unit 27 Pressure monitoring unit 28 Pressure Sensor 29 alarm lamp

Claims (6)

[Claims] 1. A roller (7) is rotatably mounted on both ends of a front opening type suction box (6) attached to a flat knitting machine (2), and an annular belt (8) is provided between the rollers (7). ), The opening (6a) of the suction box (6) is closed by the belt (8), and a suction pipe (9) is attached to the belt (8) in front of the suction box (6). The suction port (9a) of 9) faces the knitting port (4) of the flat knitting machine (2), and the inside of the suction pipe (9) communicates with the inside of the suction box (6). In a dust removing device (1) of a flat knitting machine to which a suction device (13) is connected, a driving means (10) for driving the roller (7) to rotate forward and reverse, and a rotation of the driving means (10). Control means (20) for controlling the drive independently of the knitting; Dust removing device of the flat knitting machine, characterized in that to obtain (1). The control means (20) interlocks with the switching of the course during knitting, and controls the suction pipe (9) for each course.
The dust removing device (1) for a flat knitting machine according to claim 1, wherein the rotation of the driving means (10) is controlled so as to move at a constant speed. 3. The control means (20) interlocks with the course switching at the time of knitting, and controls the suction pipe (9) at a speed corresponding to each knitting mode for a plurality of knitting modes existing in the course.
The dust removing device (1) for a flat knitting machine according to claim 1, wherein the rotation of the driving means (10) is controlled so as to move the dust. 4. The control means (20) controls a rotation of the driving means (10) so that the suction pipe (9) moves following a change in knitting position in a course during knitting. (21) and a second rotation control unit (22) for controlling the rotation of the driving means (10) such that the suction pipe (9) moves at a moving speed set independently of the change of the knitting position.
4. The method according to claim 1, further comprising:
A dust removing device for a flatbed knitting machine according to the above (1). 5. The first rotation control section (21) and the second rotation control section (22) are activated according to a change in knitting mode in each course. Or a dust removing device (1) for a flat knitting machine according to claim 4. 6. A flat knitting machine (2) having a plurality of needle beds (3), wherein a suction box (6) and a suction pipe (9) are provided for each needle bed (3). The dust removing device (1) for a flat knitting machine according to any one of claims 1, 2, 3, 4, and 5.