JP2000064162A - Apparatus for detecting butt fracture of flat knitting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for securely detecting butt immediately after the butt breakage occurred. SOLUTION: This flat knitting machine holds knitting components (e.g. knitting needles 7 and/or jacks 9 coupled with knitting needles 7 in a combined state) in needle grooves movably, always energizes the above knitting components having the first butt and a portion to be detected so as to protrude from the needle grooves, enables the first butt and the above detecting portion to plunge into the needle grooves while resisting the energized force and enables the knitting components to be held without being omitted outside the needle grooves. The above knitting components have the first butt 35 so as for the detecting portion 29 to be plunged into the needle grooves by pressing the butt 35 so as to plunge into the needle grooves. The first pressing cam 75 is formed on a track for the butt 35 and the track is formed between knitting cams. The cam 75 presses the butt 35 so as to plunge into needle grooves. The first detecting means 80A is formed on a track for the detecting portion 29 and detects the protrusion of the portion 29 outside the needle grooves at the same phase as the first pressing cam 75 in the traveling direction of the first butt 35.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention detects breakage of a bat formed on a knitting needle and / or a knitting member such as a jack integrally connected to and held by a flat knitting machine (hereinafter referred to as butt bending). The present invention relates to a detection device.

[0002]

2. Description of the Related Art In a flat knitting machine, a butt is formed on a knitting member such as a knitting needle and / or a jack having a loop forming hook at its tip, and the butt is formed in a needle groove that does not contact the knitting cam. It is displaceable between the retracted position and the position where the butt projects to the outside of the needle groove where it abuts the knitting cam. It is retained without dropping from the groove. In such a knitting machine, the action surface of the knitting cam provided on the carriage that reciprocates on the needle bed abuts the upper edge or the lower edge of the butt, and moves the needle cam forward and backward, or when the pressing cam moves. Arbitrary knitting is performed by pressing the upper surface of the bat and immersing it in the needle groove.

[0003]

In a knitting machine for knitting by bringing a knitting cam into contact with a butt of a knitting member, when the bat is broken, the needle cannot perform the knitting operation. Also, when a butt break occurs when the knitting needle locks the loop, the loop locked by the needle is not released from the needle, the fabric stays in the tooth gap and is not pulled down, and the neighboring needles move forward and backward. Will be difficult. If the needle is pulled down in this state forcibly, thread breakage may occur, or a butt that has deviated from the butt path of the knitting cam may collide with the side surface of the knitting cam and damage the butt of the needle.

A knitting machine for detecting the occurrence of the above-described butt breakage by detecting the needle breakage caused by the butt breakage and the abnormal swelling of the material at the needle bed gap between the front and rear needle beds are detected. Are known. However, with such a method, even if a bat break occurs, the bat break cannot be detected unless the knitting needle is damaged, the fabric is dropped, or the fabric is raised. Therefore, there is a problem that the knitting yarn is unnecessarily consumed from the occurrence of the bat fold to the detection of the bat fold, or the bat fold cannot be detected until the knitting needle is broken, and if the bat fold itself can be detected. It cannot prevent the damage that can be avoided. The present invention has been conceived in order to solve the above-mentioned problems, and discloses a bat fold detection device that can detect bat folds reliably with a simple configuration, and that can immediately detect after bat folds occur. To aim.

[0005]

In order to solve the above-mentioned problems, a butt bending detecting device for a flat knitting machine according to the present invention provides a knitting needle and / or a knitting member such as a jack integrally connected to and held with a knitting needle in a needle groove. The first bat and the detected portion formed on the knitting member are constantly urged in a direction projecting from the needle groove, and the first bat is held against the urging force.
In a flat knitting machine in which a butt and a detected portion can be retracted into a needle groove and a knitting member is held without falling out of the needle groove, the first bat is pressed in a direction in which it is retracted into the needle groove. As a result, the first bat is formed on the knitting member so that the detected portion is retracted into the needle groove, and the first bat is pressed against the orbit of the first bat formed between the knitting cams. Forming a first pressing cam that immerses the needle in the needle groove, and on the track of the detected portion and in the same phase as the first pressing cam in the moving direction of the first butt to the outside of the needle groove of the detected portion. It is characterized in that a first detecting means for detecting the protrusion of is provided. According to the above-described configuration of the invention, the first butt provided on the knitting needle or the knitting member integrated with the knitting needle is sunk into the needle groove by the pressing cam, and whether the detected portion projects outside the needle groove is determined by moving the carriage. The detection is performed by the first detection device provided on the same phase as the first pressing cam in the direction. At this time, if the first bat does not have a bat break, the detected portion is also in a state of being immersed in the needle groove and is not detected. On the other hand, when the butt is broken in the first bat, the pressing cam does not press the first bat, and thus the detected portion that is in a state of protruding outside the needle groove is detected by the detection device and the first bat of the first bat is detected. Bat break is detected.

Further, a second portion in which the detected portion is formed on the knitted member
Being a bat is also one of its features.

Also, on the orbit of the second bat, the first bat
A second pressing cam that presses the second bat in a phase different from that of the first pressing out in the moving direction of the bat to form the second pressing cam for retracting the second bat into the needle groove is formed on the orbit of the first bat. Another feature is that the second detecting means for detecting the protrusion of the first butt out of the needle groove is provided on the same phase as the second pressing cam in the moving direction of the second butt. According to the configuration of the invention described above, after the presence or absence of bat bending of the first bat is detected by the first detection device, the position where the first pressing cam and the first detection device are provided in the moving direction of the carriage is The second pressing cam provided on a different phase allows the second butt to be retracted into the needle groove, and whether the first butt projects outside the needle groove is provided on the same phase as the second pressing cam in the carriage movement direction. The second detecting device is used to detect whether or not the bat is broken in the second bat.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a butt breakage detecting device for a flat knitting machine of the present invention will be described in detail with reference to the drawings. FIG. 1 is a cross-sectional view of a front needle bed 1 and a front carriage 3 of a flat knitting machine provided with a butt bending detection device, and FIG. 2 is a view of the needle bed 1 and the carriage 3 viewed in the direction of arrow X in FIG. . It should be noted that, in FIGS. 1 and 2, only the configuration necessary for butt breakage detection is shown for the sake of clarity. Further, a case will be described as an example where a second bat provided separately from the first bat for detecting bat fold is used as the detected portion for bat fold detection. As shown in FIG. 1, a knitting needle 7 and a jack 9 integrally connected to the knitting needle 7 are mounted in a needle groove 5 formed on the needle bed 1 at equal intervals, and a select jack and a jack not shown are provided. A needle selector is mounted in the same needle groove 5 as the knitting needle 7 and the jack 9.

The knitting needle 7 will be described with reference to FIG.
The knitting needle 9 of the present embodiment is a compound needle that opens and closes the hook 15 by moving the slider 13 forward and backward relative to the needle body 11. The slider 13 is composed of a needle body 11, a slider base 17, and two blades 19a and 19b that are stacked. The needle body 11 has a recess 23 near the tail for engaging the head 21 of the jack 9,
A slider groove 25 is formed from the throat portion of the hook base of the needle body 11 to the center of the needle body. The slider base 17 has a slider butt 29 near the tail and an auxiliary slider butt 31 on the front side thereof, and a blade holding member 27 is provided on the lower surface near the head so that the blades 19a and 19b are attached to the slider base 17. Fit in. The blades 19a and 19b have substantially the same shape and have a tongue 33 on the tip side.

The jack 9 has a jack bat 35 for advancing and retreating, and an upper arm portion 37 and a lower arm portion 39 are bifurcated in front of the position where the jack bat 35 is formed. A convex portion 41 is formed on the lower arm portion 39, and the convex portion 41 is in contact with the lower surface of the slider tail portion 30. The jack upper arm portion 37 is in contact with the upper surface of the slider tail portion 30 and is pressed in a direction in which the slider butt 29 of the slider 13 is retracted into the needle groove 5, whereby the lower surface of the slider tail portion 30 presses the convex portion 41 and the jack 9
The jack butt 35 of No. 3 is immersed in the needle groove 5. In addition,
Reference numeral 43 denotes a wire attached over the entire length of the needle bed in order to hold the jack 9 in the needle groove 5.
Reference numeral 5 denotes a metal band which is attached to a dovetail groove 49 formed in a needle plate 47 forming the needle bed over the entire area of the needle bed, and holds the knitting needle 7 without dropping from the needle groove 5.

Next, the carriage 3 will be described with reference to FIGS. 2 and 3. FIG. 3 is a view of the carriage 3 as seen from the needle bed side. As shown in FIG. 2, the flat knitting machine of the present embodiment is provided with butt breakage detecting devices at both left and right ends of the carriage 3, but since the structure is the same, the following description will be given with reference to FIG. Only the bat bending detection device shown on the left side will be described. As shown in FIGS. 2 and 3, a cam base plate 5 that constitutes the carriage 3
1 has an upper guide cam 53, a lower guide cam 55,
Side guide cams 57a, 57b and raising cam 59
A bridge cam 60 and knitting cams 61a and 61b configured to be movable in the directions of both arrows are provided.
Upper guide cam 53 and side guide cams 57a, 5
A track 62 of the slider butt 29 is formed between 7b, and a track 63 of the jack bat 35 is formed between the side guide cams 57a, 57b and the lower guide cam 55. On the track 62 of the slider butt 29, the central portion 6
Slopes 67a, 67 that decrease from 5 toward both sides
b is formed, a first pressing cam 69 is formed that presses the slider butt 29 in the direction in which the slider butt 29 is retracted into the needle groove. On the track 63 of the jack butt 35, the first pressing cam 69 and the carriage moving direction are formed. In the different phase, the central portion 71 and the inclined surface 73a, like the first pressing cam 69,
The second pressing cam 75 is formed from 73b and presses the jack butt 35 in the direction to be retracted into the needle groove.
A state in which the first pressing cam 69 and the second pressing cam 75 press either one of the slider butt 29 or the jack butt 35 in the direction in which the butt is retracted into the needle groove, so that the other butt is also retracted in the needle groove. Becomes

In the bat breakage detecting device of the present embodiment, one set of bat breakage detecting devices is constituted by the pressing cam provided on the track of the bat and the bat detecting device,
The pressing cam and the detection device that constitute one bat bending detection device are provided on the tracks of different bats. The detection device 80A shown in FIGS. 1 and 2 is formed on the track of the slider butt 29 for detecting the butt bending of the jack bat 35, and the detection device 80B is provided on the path of the jack bat 35 to detect the butt bending of the slider bat 29. It is provided for. As described above, the bat bending detection device of the present embodiment does not detect the bat bending of the bat on the side detected by the detection device, but detects the butt bending of the bat pressed by the pressing cam.

In FIGS. 1 and 3, the slider butt 29 is shown.
The configuration of two sets of butt bending detection devices for detecting the butt bending of the jack butt 35 and the jack bat 35 is shown. Since it has the same structure except that it is provided on different phases in the moving direction and is provided upside down,
Hereinafter, the detection device 80A for the jack bat will be described with reference to FIG.
And it demonstrates using FIG. Note that FIG. 4 is a diagram in which only the configuration necessary for detecting the butt bending of the jack bat 35 is extracted from FIG. 1.

As shown in FIG. 4, the detection device 80A has a swing lever 85 which is swingably held about a shaft 83 with respect to a support plate 81 which is erected from the carriage base plate 51.
And a micro switch 87 that detects the swing of the swing lever 85 and sends a bat bending signal to the knitting machine control section.
The swing lever 85 includes a detection arm 93, the tip of which projects from the opening 89 formed in the carriage base plate 51 and the notch 91 formed in the side guide cam 57 a onto the track 62 of the slider butt 29, and the swing lever 85. The contact portion 95 transmits the swing to the micro switch 87, and the elastic leg portion 97 biases the swing lever 85 in the clockwise direction.
The oscillating lever 85 urges the oscillating lever 85 clockwise around the shaft 83 by abutting the elastic leg portion 97 on the cam base plate 51, and further abuts the abutting portion 95 on the cam base plate. Is prevented from swinging. Detection arm 93
As shown in FIG. 3, slopes 99a and 99b are formed at both ends of the carriage in the moving direction of the carriage, and when the butt comes into contact with the slopes, the swing lever 85 resists the urging force of the elastic legs 97. It is swung counterclockwise. The micro switch 87 is urged clockwise around the shaft 101, and the lever 103 is oscillated counterclockwise by the oscillating lever 85. The structure is such that it is sent to the control section of the machine and the operation of the knitting machine is stopped.

Next, the operation of the above-mentioned butt breakage detecting device will be described with reference to FIGS. FIG. 4 is a diagram when the knitting needle in which the butt is not broken in the slider butt 29 and the jack bat 35 and the jack integrated with the knitting needle (hereinafter, both are collectively called a knitting member) reach the position A in FIG. 5 shows the state when the knitting member has reached the position of B in FIG. Similarly, FIG. 6 shows when the knitting member in which the bat break has occurred in the jack bat 35 has reached the position A in FIG. 3, and FIG. 7 shows the knitting member in which the bat break has occurred in the slider butt 29 at the position B in FIG. Shows the state when it reaches. As the knitting starts, the carriage moves in the direction of the arrow Y in FIG. 3, whereby the slider bat 29 and the jack bat 35 move from right to left, and the track 62 of the slider bat 29 formed on the knitting cam and the jack bat 35.
Will be guided to the orbit 63. Then, when the knitting member in which the butt bending has not occurred reaches the position A, the jack butt 35 is pressed by the second pressing cam 75 and retracted into the needle groove as shown in FIG. At this time, in the detection device 80A provided on the same phase in the moving direction of the second pressing cam 75 and the carriage, the jack butt 35 is retracted into the needle groove, and the slider butt 29 is retracted into the needle groove. Therefore, the detection device 80A does not detect the slider butt 29.

Next, when the knit member reaches the position of B in FIG. 3,
As shown in FIG. 5, the slider butt 29 is pressed by the first pressing cam 69 to be retracted into the needle groove, and the jack bat 35 is also retracted into the needle groove. The detection device 80B does not detect the jack bat. Since the knitting member in which the butt fold has not occurred in this way passes the detection device in a state where the slider butt 29 and the jack butt 35 are immersed in the needle groove, the detection device 80A
And 80B does not detect a bat.

On the other hand, when the knitted member in which the butt is broken on the jack bat 35 reaches the position A in FIG. 3, the jack bat 35 is damaged as shown in FIG.
The jack 9 is not pushed down by the pressing cam 75, and the slider butt 29 maintains a state of protruding outside the needle groove.
Therefore, the slider butt 29 comes into contact with the slope 99a of the rocking lever 85 of the detection device 80A and rocks the rocking lever 85 counterclockwise against the elastic leg portion 97, whereby the contact portion 95 is cammed. When the detection lever 103 is pushed away from the main plate 51 and the micro switch 87 is activated, a bat bending signal of the jack bat 35 is sent to the knitting machine control unit, and the operation of the knitting machine is stopped. In addition, the knitted member in which the butt is broken in the slider butt 29 is indicated by B in FIG.
When the position is reached, as shown in FIG.
As a result, the slider 13 is not pushed down, and the jack butt 35 is in a state of protruding outside the needle groove. Therefore, the jack butt 35 is inclined by the slope 10 of the swing lever 93 of the detection device 80B.
5a, the swing lever 93 is rotated against the urging force of the elastic leg portion, whereby the micro switch 87 is actuated and the butt bending of the slider butt 29 is detected.
As described above, the bat of the knitting member in which the butt is not broken passes while being immersed in the needle groove, whereas the butt of the knitting member in which the butt is broken is detected in the state of protruding outside the needle groove. Since the device detects the knitting machine, it is possible to reliably detect the knitting member in which the bat has broken even when the knitting machine is operated at high speed.

In the above embodiment, the case where two butt breakage detecting devices for the slider butt and the jack bat are formed has been described, but it is possible to provide only one of the butt breakage detecting devices. Further, in the above-described embodiment, since the compound needle in which the needle main body and the slider are independently moved back and forth as the knitting needle is used, the butt for immersing the knitting member in the needle groove and the detected object for detecting the butt breakage A bat used for advancing and retracting the knitting member was used for each part, but when using a knitting needle in which the advancing and retracting of the knitting needle is performed by a single bat, such as a Bella needle, the knitting member is used instead of the bat. It is also possible to provide the knitting member with a protrusion that is not used for advancing and retreating or selecting the protrusion, and use the protrusion as the detected portion.Instead of providing a protrusion such as a butt, a notch portion is provided in the needle plate. A part of the knitting member protruding from the notch to the outside of the needle groove can also be used as the detected part. Further, in the above-described embodiment, the case where the butt bending detection devices are provided on both sides of the carriage has been described as an example, but it may be provided only on one side. Also, the first bat and the second bat are formed separately for the slider and the jack.
The bat and the second bat can also be formed on the same member. Further, it is possible to use detection means such as a proximity sensor other than the detection device having a mechanical structure composed of the swing lever and the micro switch, and in this case, the abnormality of the bat can be detected without contact. Further, in the present embodiment, the case where the butt bending detection device is provided in the single system knitting machine in which only the single knitting cam unit is provided on the carriage has been described as an example, but a plurality of knitting cam units are provided on the carriage. It can also be applied to a multi-system knitting machine. In the multi-system knitting machine, it may be provided only outside the knitting cam units provided at both ends of the carriage, or may be provided between the knitting cam units.

[0019]

As described above, in the butt breakage detecting device for a flat knitting machine according to the present invention, the bats of all knitting needles are made to immerse into the needle groove by a cam that acts in the direction of immersing into the needle groove. By doing so, only the detected part of the needle where the butt is broken is brought out of the needle groove, and the bat bending is detected by checking the presence of the detected part protruding outside the needle groove. Even when running and knitting, the bat break can be reliably detected.

Further, since a bat used for ordinary knitting is used to detect a bat break, it can be carried out without making a great change in the structure of the knitting member such as the needle and the jack.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a needle bed of a flat knitting machine equipped with a butt breakage detection device.

FIG. 2 is a view as seen in the direction of arrow X in FIG.

FIG. 3 is a view of the carriage as seen from the needle bed side.

[FIG. 4] A knitting member in which bat bending has not occurred is shown in FIG.
It is a figure which shows the state which reached the position of.

FIG. 5 shows a knitting member in which bat bending has not occurred, which is indicated by B in FIG.
It is a figure which shows the state which reached the position of.

FIG. 6 is a diagram showing a state in which the knitting member in which the butt of the jack bat has broken has reached the position A in FIG. 3;

FIG. 7 is a diagram showing a state in which the knitting member in which the butt bending of the slider bat has occurred reaches the position of B in FIG. 3;

[Explanation of symbols]

7 ... Knitting needle, 9 ... Jack, 13 ... Slider, 19a,
19B ... Blade, 29 ... Slider bat, 35 ... Jack bat, 51 ... Cam base plate, 65 ... First pressing cam,
75 ... Second pressing cam, 80A, 80B ... Detecting device

Claims (3)

[Claims] 1. A knitting needle and / or a knitting member, such as a jack, which is integrally connected to and held by a knitting needle, is movably held in a needle groove, and a first butt and a detected portion formed on the knitting member are needles. It constantly urges in the direction to project from the groove, resists the urging force, the first butt and the detected part can be retracted into the needle groove, and the knitting member is held without falling out of the needle groove. In the flat knitting machine, the first bat is formed on the knitting member so that the detected portion is sunk into the needle groove by pressing the first bat in the direction of sunk into the needle groove, and between the knitting cams. The first bat is pressed on the orbit of the first bat to be formed, and the first bat is retracted into the needle groove.
First detecting means for forming the pressing cam and detecting the protrusion of the detected portion out of the needle groove on the track of the detected portion and in the same phase as the first pressing cam in the moving direction of the first butt. A butt breakage detecting device for a flat knitting machine, comprising: 2. The bat bending detection device for a flat knitting machine according to claim 1, wherein the detected portion is a second bat formed on a knitting member. Bat break detector for knitting machine. 3. The butt breakage detecting device for a flat knitting machine according to claim 2, wherein the second bat is on the track of the second bat and on a phase different from that of the first pressing cam in the moving direction of the first bat. To form a second pressing cam that presses the second butt into the needle groove and is on the orbit of the first butt and in the same phase as the second pressing cam in the moving direction of the second butt. A butt breakage detecting device for a flat knitting machine, comprising a second detecting means for detecting the protrusion of the first bat to the outside of the needle groove.