JP5414697B2 - Flat knitting machine - Google Patents

Description

  The present invention relates to a flat knitting machine that causes a knitting needle arranged in a needle bed to perform a knitting operation.

  A flat knitting machine is an apparatus that includes a needle bed and a carriage that reciprocates in the longitudinal direction of the needle bed, and that knits the knitted fabric by moving a plurality of knitting needles arranged in the needle bed in the longitudinal direction of the needle groove. is there. (For example, see Patent Document 1 and Patent Document 2). The knitting operation of the knitting needles is basically based on three types of knit, tack and miss, and is controlled by operating a plurality of bats provided on each knitting needle with a cam system provided on the carriage.

  FIG. 1 is a schematic explanatory diagram showing a corresponding state between a knitting needle 7 and a cam system when a knit is selected as a knitting operation in a conventional cam system. In FIG. 1, for convenience of explanation, only the needle raising cam 2, the top mountain cam 3, and the degree mountain cam 4 are shown in the cam system, and the knitting needle 7 is also viewed from a direction different from the actual arrangement direction. Indicates.

  The knitting needle 7 usually has a needle body 71 having a hook (not shown), a needle jack 72, a select jack 73, and a selector 74. Of these members, the needle jack 72 is provided with a knitting operation butt 70, and a cam system described later acts on the knitting operation bat 70, so that the needle jack 72 moves forward and backward in the direction of the tooth opening 0. As a result, the needle body 71 advances and retracts in the direction of the tooth opening 0.

  The knitting operation bat 70 of the knitting needle 7 whose knitting operation is selected as the knitting operation follows the route indicated by the two-dot chain line arrow in FIG. Specifically, as the carriage moves, the knitting operation bat 70 passes through the thin wall portion 43 of the mountain cam 4 on the left side of the page, and is pushed up in the direction of the tooth opening 0 by the rising slope 8 of the needle raising cam 2. When the carriage further moves, the knitting operation bat 70 is pushed down to the opposite side of the tooth opening 0 by the descending slope 9 composed of the first slope 91 of the Tianshan cam 3 and the second slope 92 of the degree mountain cam 4. The degree mountain cam 4 is configured to be slidable in the direction along the second slope 92, and by sliding, the position of the lower end of the second slope 92 can be changed and the amount of the knitting needle 7 drawn can be adjusted.

Japanese Patent Publication No. 2-10262 JP 2006-183182 A

  Incidentally, as shown in FIG. 1, in a certain type of flat knitting machine, a gap having a width larger than the length of the knitting operation bat 70 may be formed between the rising slope 8 and the falling slope 9. There are several reasons why a wide gap is formed. As one of them, in order to adjust the timing for moving both the needle body and the slider in the compound needle, the rising slope 8 is positioned away from the falling slope 9 (see, for example, Patent Document 2). As another reason, in order to alleviate the impact when the knitting operation bat 70 and the rising slope 8 come into contact with each other, or to reduce wear of both due to the contact, the rise is made with respect to the inclination angle of the falling slope 9. It is also possible to loosen the inclination angle of the slope 8.

  In such flat knitting machines, in recent years, in order to improve the production efficiency of the knitted fabric, it has been studied to further increase the knitting speed, that is, to increase the carriage moving speed. Here, when the knitting operation is speeded up, if there is a large gap between the ascending slope 8 and the descending slope 9, the knitting operation butt 70 is moved into contact with the cams 2, 3, 4. It jumps in the direction orthogonal to the traveling direction (the direction of the black arrow illustrated in the figure) and vibrates to a position shifted from the normal route at the gap. Such vibration is not particularly a problem when the knitting operation bat 70 is raised, but causes a variation in the amount of the knitting yarn drawn into the needle bed when the knitting operation butt 70 is lowered, thereby impairing the quality of the knitted fabric. It becomes.

  This invention is made | formed in view of the said situation, The objective is to provide the flat knitting machine which can suppress the vibration of the bat for knitting operation | movement at the time of contacting a descending slope.

  The present invention relates to a flat knitting machine including a cam system having a cam plate, a needle raising cam, a heaven mountain cam, and a degree mountain cam. The cam plate constitutes one surface side of a carriage that reciprocates in the longitudinal direction of a needle bed in which a plurality of knitting needles are arranged in parallel. The needle-raising cam is provided so as to protrude from the cam plate, and is a generally mountain-shaped member having an ascending slope that acts on the lower end of the knitting operation bat provided on the knitting needle and advances the knitting needle toward the mouth of the upper end of the bat. It is. The Tianshan cam is a member that protrudes from the cam plate and has a first inclined surface that constitutes a part of a descending inclined surface that acts on the upper end of the knitting operation bat and retracts the knitting needle to the opposite side of the tooth opening. The hill cams are members that project from the cam plate and are provided on the left and right sides of the needle raising cam and have a second inclined surface that constitutes the remainder of the descending inclined surface, and determine the final pull-in amount of the knitting needle. The flat knitting machine of the present invention having such a configuration is further arranged on the cam plate between the rising slope and the falling slope on both sides of the needle raising cam, and can be projected and retracted in a direction intersecting the plane of the cam plate. It is characterized by having a pair of left and right cams. This camshaft cam is in a depressed state so that the movement of the knitting operation bat is not hindered on the side where the knitting operation bat is raised by the rising slope, and the knitting operation is performed on the side where the knitting operation bat is lowered by the descending slope. At the portion facing the lower end of the bat for knitting, the upper and lower vibrations of the knitting operation bat are projected so as to be reduced.

  The in / out cam is not particularly limited as long as the in / out cam is configured so as to be freely in / out with respect to the cam plate. For example, the retracting cam may be configured to be able to protrude and retract in a direction perpendicular to the surface of the cam plate, and the retracting cam may be driven by electromagnetic drive means such as a solenoid or mechanical drive means such as a motor. In addition, the following can be cited as a configuration that can control the appearance of the in / out cam without using a drive means dedicated to the in / out cam.

  In the flat knitting machine of the present invention, the intruding cam is a substantially plate-like member along the descending slope. And the upper end side of the retracting cam is pivotally supported so that the lower end side of the retracting cam can swing in the retracting direction, and the lower end side of the retracting cam is camped by an elastic body arranged between the cam plate and the retracting cam. It is set as the structure pressed in the direction which protrudes from a plate.

  Furthermore, it is preferable that the degree cam is configured as follows with respect to the in / out cam having the upper configuration. That is, a cam body having a second slope and a receiving cam connected to the lower end side of the cam body and preventing excessive lowering of the knitting operation bat lowered along the descending slope are provided along the second slope. The mountain cam is configured to be slidable in the direction. And it is set as the structure which presses an in / out cam in a submerged state by a part of receiving cam by the slide position of a mountain cam.

  According to the flat knitting machine of the present invention, when the knitting operation bat of the knitting needle is lowered by the top and bottom cams, the retracting cam guides the lower end of the knitting operation bat. The vibration of the knitting operation bat can be suppressed. As a result, since the knitting operation of the knitting needle is stabilized even at high speed knitting, a knitted fabric with a beautiful finish can be knitted.

  By supporting the one end side of the retracting cam so that the other end side of the retracting cam can be swung freely, and the other end side is pressed in the protruding direction by the elastic body, It is possible to control the appearance of the intrusion cam without providing a driving means. Specifically, on the side where the rising slope acts on the knitting operation bat, the intrusion cam can be brought into the depressed state by pressing the intrusion cam toward the cam plate with the knitting operation bat. In particular, it is preferable to form a slope on the retracting cam so that when the knitting operation bat comes into contact with the retracting cam, the knitting operation bat rides up without being stopped by the retracting cam. On the side where the descending slope acts on the knitting operation bat, the retracting cam is projected by the elastic body, so that the lower end of the knitting operation bat that bounces in contact with the descending slope is supported by the retracting cam. Can do.

  If you use a part of the receiving cam provided on the lower end side of the upper cam as a configuration to press the upper / lower cam, the retracted state of the cam without a separate drive source to press the cam And switching between protruding states can be controlled. In addition, it is possible to avoid direct contact between the knitting operation bat and the retracting cam on the side where the rising slope acts on the knitting operation bat, and the possibility of damage to both members can be reduced.

In the conventional cam system, it is a schematic explanatory drawing which shows the corresponding state of a knitting needle and a cam system when a knit is selected as a knitting operation. It is a schematic explanatory drawing which shows the arrangement | positioning state of the retractable cam in the flat knitting machine which concerns on embodiment. FIG. 3 is a schematic three-view diagram of a retracting cam, in which (A) is a front view, (B) is a view taken in the direction of arrow (A), and (C) is a bottom view.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The flat knitting machine of the present invention is characterized in that it has an in / out cam that is not provided in the conventional cam system, and the configuration other than the in / out cam is substantially the same as the conventional cam system already described with reference to FIG. . Therefore, in the following embodiments, the same members as those in the conventional cam system are denoted by the same reference numerals as those in FIG. 1 and the description thereof will be omitted, and differences from the conventional cam system will be mainly described.

  FIG. 2 is a schematic explanatory view showing an arrangement state of the retracting cam 1 in the cam system according to the embodiment. 2, in addition to the front view of the cam system, a partial cross-sectional view of the cam plate 100 at a position where the retracting cam 1 is disposed is shown in the vicinity of the mountain cam 4. A chain double-dashed line in the partial cross-sectional view indicates a height position of the knitting operation bat 70. 3 is a three-plane view of the left and right cam 1 shown in FIG. 2, wherein (A) is a front view, (B) is an arrow view of (A), and (C) is a bottom view. . 2 has a symmetrical shape with respect to the cam shown in FIG.

  As shown in FIG. 2, the cam system of the present invention is formed on the cam plate 100 at the position of a gap formed between the rising slope 8 and the falling slope 9 (the first slope 91 and the second slope 92). A pair of retractable cams 1 fitted in the recesses.

  The retractable cam 1 is a substantially plate-like member, and has a swing shaft 1s formed on the upper end side thereof and a spring seat 1g formed on the back surface on the lower end side. A plurality of surfaces 11 to 16 are formed on the front side of the retracting cam 1, that is, on the side of the knitting needle 7 facing the knitting operation bat 70. Further, the retractable cam 1 has a guide slope 10 extending from the upper end of the surface 11 to the lower end of the surface 14 on the side surface side.

  The surface 15 of the retracting cam 1 is a surface that comes into contact with a thin portion 22 of the needle raising cam 2 described later and determines the upper limit of the protruding amount of the retracting cam 1. When the surface 15 comes into contact with a thin portion 22 described later, the three surfaces 14 and 12 including the surface 15 are substantially parallel to the cam plate 100. The height of the surfaces 12, 14, and 15 is the highest in the surface 12, and then decreases in the order of the surface 14 and the surface 15 for the reason described later. Moreover, the surface 16 adjacent to the other end side of the retractable cam 1 with respect to the surface 15 is lowered to the back side toward the other end side. Further, the surface 11 and the surface 13 are surfaces adjacent to the surfaces 12 and 14 in the left-right direction of the cam system when the retractable cam 1 is arranged on the cam plate 100, respectively. It goes down to the back side as it goes to the protruding part of 1s.

  When the retracting cam 1 is disposed in the recess of the cam plate 100, one end side of the retracting cam 1 is pivotally supported on the cam plate 100 by the swing shaft 1s, and the other end side can swing. Further, a spring (elastic body) 19 is disposed between the spring seat 1g of the retracting cam 1 and the cam plate 100, and the other end side of the retracting cam 1 is always urged in a direction protruding from the cam plate 100, The surface 15 contacts the thin wall portion 22. The telescoping cam 1 arranged in this way is compactly arranged without moving the positions of the cams 2 and 3 in the conventional cam system in the space surrounded by the cam plate 100, the needle raising cam 2 and the Tianshan cam 3. ing.

  On the other hand, the mountain cam 4 connects the cam body 41 having the second slope 92 constituting the descending slope 9, the receiving cam 42 formed on the lower end side of the cam body 41, and the cam body 41 and the receiving cam 42. The point provided with the thin part 43 is the same as the past. However, the receiving cam 42 protrudes to the needle raising cam 2 side. Therefore, a thin portion 22 that accommodates the overhanging portion 420 of the receiving cam 42 is formed at the skirt portion of the needle raising cam 2 having a generally chevron shape. The thin portion 22 is formed by cutting out the back side (the back side of the paper) of the needle raising cam 2.

  The trajectory of the knitting operation bat 70 when the knitting needle is knitted as a knitting operation by the retracting cam 1, the needle raising cam 2, the Tenzan cam 3, and the degree mountain cam 4 having the above-described configuration is shown in FIG. explain.

  First, when the knitting operation bat 70 is introduced into the needle lasing cam 2, the mountain cam 4 on the left side of the drawing rises along the second inclined surface 92, and the thin portion 43 is disposed in the course of the knitting operation bat 70. The At this time, the overhanging portion 420 of the mountain cam 4, that is, a part of the receiving cam 42 presses the surface 16 of the cam 1 to the cam plate 100 side, and the other end of the cam 1 is moved to the cam plate 100. Sink into the recess. Finally, the overhanging portion 420 presses the surface 15 of the retracting cam 1 and retracts the surface 14 of the retracting cam 1 toward the cam plate 100 from the height position of the knitting operation bat 70 indicated by a two-dot chain line. Here, the height of the surface 15 of the retracting cam 1 is a height determined by how much the retracting cam 1 is depressed, and the height of the surface 14 is when the retracting cam 1 is depressed. It is the height which can evacuate from the position of a dashed-two dotted line.

  After the knitting operation bat 70 introduced into the needle raising cam 2 has passed through the thin wall portion 43 of the hill cam 4, the positions of the surfaces 14 and 13 of the retracted cam 1 in the retracted state are brought into contact with the retracted cam 1. It passes without any contact, and ascends in the direction of the mouth with contact with the rising slope 8. Then, the knitting operation bat 70 passes through the position of the apex of the needle raising cam 2, comes into contact with the first slope 91 (the descending slope 9) of the Tianshan cam 3, and descends in the direction opposite to the tooth opening.

  Before the knitting operation bat 70 comes into contact with the descending slope 9, the degree cam 4 is set so that the position of the lower end of the second slope 92, that is, the position of the lower end of the descending slope 9 is a desired position. It goes down in the direction along the slope 92. The lowering amount of the knitting operation bat 70, that is, the pulling amount of the knitting needle is determined by the position of the lower end of the second slope 92. At this time, since the overhanging portion 420 provided on the receiving cam 42 of the mountain cam 4 is in a position where it does not act on the surface 16 of the retracting cam 1, the retracting cam 1 is supported by the elastic force of the spring 19. Is pressed against the thin portion 22 of the needle raising cam 2 at the surface 15 portion.

  The guide slope 10 of the projecting cam 1 that is in the protruding state is disposed at a position facing the descending slope 9 (see the projecting cam 1 on the right side of FIG. 2). Therefore, even if the knitting operation bat 70 contacts the first slope 91 and bounces downward in the mountain cam 4, the knitting operation bat 70 is stopped against the guide slope 10 and does not vibrate. Is lowered along. The guide slope 10 at this position is the portion with the largest height, and the knitting operation bat 70 can be reliably stopped against. Further, the knitting operation bat 70 is likely to jump downward in the mountain cam 4 also at the boundary between the first slope 91 and the second slope 92, but in this case, the knitting operation bat 70 is also stopped against the guide slope 10. The In this way, the knitting operation bat 70 is always stopped by the guide slope 10 at a position where it is likely to jump downward in the mountain cam 4, so that the degree of drawing of the knitting yarn is stable even if the carriage is sped up, A knitted fabric with good finish can be knitted.

  Here, when the carriage is moved after operating the knitting needle by hand during maintenance or the like, the knitting operation bat 70 may come into contact with the retracting cam 1 in a state of being lowered from the position of the upper end of the guide slope 10. is there. For example, the knitting operation bat 70 may come into contact with the retracting cam 1 at the height of the surface 11 of the retracting cam 1 in FIG. In such a case, the knitting operation bat 70 rides on the surface 11 or the surface 13 which is an inclined surface that is lowered toward the left side of the page and sinks the retracting cam 1. It is possible to prevent the impact of this collision from acting on both members. The knitting operation bat 70 riding on the surface 11 or the surface 13 passes through the surface 12 or the surface 14, reaches the gap between the guide slope 10 and the descending slope 9, and is lowered along the descending slope 9 as it is.

  The knitting needle provided with the knitting operation bat may be a latch needle or a compound needle having a slider. The configuration of the present invention can also be applied to a composite cam system including a transfer cam.

0 tooth opening 100 cam plate 1 retracting cam 1s swinging shaft 1g spring seat 19 spring 10 guide slope 11-16 surface 2 needle raising cam 22 thin wall portion 3 heaven mountain cam 4 degree mountain cam 41 cam body 42 receiving cam 43 thin wall portion 420 tension Protruding part 7 Knitting needle 71 Needle body 72 Needle jack 73 Select jack 74 Selector 70 Knitting operation bat 8 Ascending slope 9 Descent slope 91 First slope 92 Second slope

Claims (3)

A cam plate constituting one side of a carriage that reciprocates in the longitudinal direction of a needle bed in which a plurality of knitting needles are arranged;
A generally mountain-shaped needle raising cam having a rising slope that protrudes from the cam plate and acts on the lower end of the knitting operation bat provided on the knitting needle to advance the knitting needle toward the upper end side of the bat.
A Tianshan cam having a first slope that is provided protruding from the cam plate and that constitutes a part of a descending slope that acts on the upper end of the knitting operation bat to retract the knitting needle to the opposite side of the tooth opening;
A cam system having a second cam which protrudes from the cam plate and is provided on the left and right sides of the needle raising cam and has a second slope that constitutes the remainder of the descending slope and determines the final pull-in amount of the knitting needle. In the provided flat knitting machine,
On both sides of the needle raising cam, the cam plate is disposed on the cam plate between the rising slope and the falling slope, and has a pair of left and right extending and retracting cams configured to be able to protrude and retract in a direction intersecting the plane of the cam plate,
The haunting cam is
On the side where the knitting operation bat is raised by the rising slope, the knitting operation bat is in a sunk state so as not to hinder the movement of the knitting operation bat,
The flat knitting characterized in that, on the side where the knitting operation bat is lowered by the descending slope, the knitting operation bat protrudes at a portion facing the lower end of the knitting operation bat so as to reduce the vertical vibration allowance of the knitting operation bat. Machine. The intrusion cam is a substantially plate-like member along the descending slope,
The upper end side of the retractable cam is pivotally supported so that the lower end side of the retractable cam can swing in the retracted direction.
2. The flat knitting machine according to claim 1, wherein the lower end side of the retracting cam is pressed in a direction protruding from the cam plate by an elastic body disposed between the cam plate and the retracting cam. Tsuyama cam
A cam body having the second slope and a receiving cam connected to a lower end side of the cam body and preventing the knitting operation bat from being excessively lowered along the second slope. It is configured to be slidable in the direction along
3. The flat knitting machine according to claim 2, wherein the protruding cam is pushed into a depressed state by a part of the receiving cam according to the sliding position of the degree cam.

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