KR101356444B1 - Weft knitting machine - Google Patents

Abstract

The present invention provides a flat knitting machine capable of suppressing the vibration of the knitting dynamic action butt when it comes in contact with the descending slope.
A pair of stand-out cams 1 are formed in a flat knitting machine including a cam system having a cam plate 100, a needle rising cam 2, a bridge cam 3, and a stitch cam 4. Each sunken cam 1 is configured to sunk from the cam plate between the rising slope 8 and the falling slope 9, respectively. The sunken cam 1 is sunk so that the knitting movement butt 70 does not interfere with the movement of the knitting movement butt 70 at the side where the knitting movement butt 70 rises by the upwardly inclined surface 8, and the knitting movement butt 70 is On the side going down by the downward inclined surface 9, the guide inclined surface 10 opposite to the rear end of the knitted motion butt 70 is in a protruding state so as to reduce the upper and lower vibration values of the knitted motion butt.

Description

Flat knitting machine {WEFT KNITTING MACHINE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat knitting machine which performs knitting operation on a knitting needle provided side by side on a needle bed.

The flat knitting machine includes a needle bed and a carriage that reciprocates in the longitudinal direction of the needle bed, and moves the plurality of knitting needles installed side by side in the needle bed in the longitudinal direction of the needle groove to form a knitted fabric. It is an apparatus to knit (for example, refer patent document 1 or patent document 2). The knitting operation of the knitting needles is controlled by operating a plurality of butts provided in each knitting needle by a cam system provided in the carriage based on three types of knit chin misses. .

Fig. 1 is a schematic explanatory diagram showing the correspondence state between the knitting needle 7 and the cam system when a knit is selected as the knitting operation in the conventional cam system. In FIG. 1, only the needle raising cam 2, the bridge cam 3, and the stitch cam 4 are shown in the cam system for convenience of explanation. 7) shows what was seen from the direction different from actual arrangement direction.

The knitting needle 7 includes a needle body 71 having a hook (not shown in the drawing), a needle jack 72, and a select jack 73 in a normal case. ) And a selector 74. Among these members, the needle jack 72 is provided with a knitting butt 70, and the needle jack 72 is operated by the cam system described later acting on the knitting motion butt 70. The bed body is advanced in the direction of the bed bed gap 0, and as a result, the needle body 71 is advanced in the direction of the needle bed gap 0. As shown in FIG.

The knitting dynamic action butt 70 of the knitting needle 7 in which a knit is selected as the knitting operation follows a route indicated by arrows of two-dot chain lines in FIG. Specifically, as the carriage moves, the knitting movement butt 70 passes through the thin plate portion 43 of the stitch cam 4 on the left side of the ground, and the needle rising cam 2 rises. The inclined surface 8 is raised in the needle bed gap 0 direction. In addition, when the carriage moves, the knitting movement butt 70 includes a descending slope 9 consisting of a first slope 91 of the bridge cam 3 and a second slope 92 of the stitch cam 4. ) Is pushed down to the opposite side to the needle bed gap (0). The stitch cam 4 is configured to be slidable in the direction along the second inclined surface 92, so that the stitch cam 4 changes the lower end position of the second inclined surface 92 so as to draw in the knitting needle 7. ) Can be adjusted.

Japanese Patent Publication No. 2-10262 Japanese Patent Laid-Open No. 2006-183182

However, as shown in Fig. 1, in some types of flat knitting machines, there is a case where a gap having a width larger than the length of the knitting dynamic action butt 70 is 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 of moving both the needle body and the slider in the compound needle, the upwardly inclined surface 8 is located at a position away from the downwardly inclined surface 9. (For example, refer patent document 2). As another reason, the tilting angle of the descending inclined surface 9 is increased in order to alleviate the impact when the knitted movement butt 70 and the inclined slope 8 are in contact, or to reduce wear of both by contact. It is also possible to smooth the inclination angle of the inclined surface 8.

In such flat knitting machines, in recent years, in order to improve the production efficiency of knitted fabrics, it has been examined to further increase the knitting speed, that is, to increase the moving speed of the carriage. Here, if there is a large gap between the rising slope 8 and the falling slope 9 when the knitting operation is accelerated, the knitting movement butt 70 is in contact with the cams 2, 3, 4 butt 70 It jumps in the direction orthogonal to the advancing direction of (), and vibrates at the position away from the normal route in the part of the gap. Such a vibration is not particularly a problem when the knitted movement butt 70 rises, but causes a deviation in the amount of pulling of the knitting yarn to the needle bed when descending, which causes damage to the well-made knitted fabric.

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 knitting dynamic act | operation butt when it contacts a falling slope.

The present invention is a flat knitting machine having a cam system including a cam plate, a needle raising cam, a bridge cam, and a stitch cam. It is about. The cam plate constitutes one side of a carriage that reciprocates in the longitudinal direction of a needle bed in which a plurality of needles are parallel. The needle rising cam is formed by protruding from the cam plate, and acting on the lower end of the knitting movement butt provided in the knitting needle, and the needle bed gap which becomes the upper end of the knitting needle ( It is a mountain-shaped member with a raised slope that advances toward the needle bed gap (here, the mountain shape refers to a roughly mountain shape including a physically correct mountain shape). Hereinafter, the same in the present specification). The bridge cam is formed by protruding from the cam plate, and acting on the upper end of the knitting motion acting butt to form a part of the descending inclined surface which ejects the knitting needle to the side opposite to the needle bed gap. It is a member equipped with. The stitch cam is a member which protrudes from the cam plate and is formed on the left and right sides of the needle lasing cam, and has a second inclined surface constituting the remainder of the descending inclined surface, and determines the amount of pulling of the final knitting needle. to be. The flat knitting machine of this invention which has such a structure is arrange | positioned in the cam plate between the rising slope and the falling slope on both sides of the needle rising cam, and it is comprised so that it may emerge in the direction which intersects the plane of a cam plate. It is characterized by having more left and right pairs of the appearance cam (出沒 cam). The sunken cam is sunk on the side where the knitting movement butt rises by the rising slope, so as not to interfere with the movement of the knitting movement butt, and on the side where the knitting movement butt falls by the falling slope, the lower end of the knitting movement butt In the part facing away from each other, it is in a protruding state so as to reduce the vibration value of the knitting movement butt up and down.

The sunken cam may be configured to project on the cam plate, and the configuration is not particularly limited. For example, the cam may be sunk in a direction orthogonal to the surface of the cam plate, and the cam may be driven by an electronic driving means such as a solenoid or a mechanical driving means such as a motor. . In addition, as shown below, the structure which can control the appearance and appearance of the appearance cam without using the drive means dedicated to the appearance cam is mentioned.

In the flat knitting machine of the present invention, the appearance cam is formed in a board shape along a descending slope (here, the board shape means that the board is roughly a board shape including a physically accurate board shape. same). And the upper end side of the appearance cam is axially so that the lower end side of the appearance cam can rock in the outgoing direction, and the lower end side of the appearance cam is an elastic body disposed between the cam plate and the appearance cam. It is set as the structure pressurized in the direction which protrudes from a cam plate by).

In addition, it is preferable to configure the stitch cam as follows with respect to the appearance cam having the above configuration. That is, a cam main body having a second inclined surface, and a receiving cam connected to the lower end side of the cam main body and preventing excessively falling of the knitting dynamic acting downward along the descending inclined surface, is provided with a second cam. The stitch cam is configured to slide in a direction along an inclined surface. And it is characterized in that by pressing the slide position of the stitching cam in the part of the receiving cam in the sinking state.

According to the flat knitting machine of the present invention, when the knitting actuating butt of the knitting needle goes down by the bridge cam and the stitching cam, the cam which guides the lower end of the knitting actuating butt vibrates in the vertical direction of the cam system. Can be suppressed. As a result, since the knitting operation of the knitting needle is stabilized also in the knitting at a high speed, a knitted fabric having excellent finish can be knitted.

When the other end side of the appearance cam is oscillated by accumulating one end side of the appearance cam, and when the other end side is pressurized in the protruding direction by an elastic body, an electronic driving means is provided for the appearance cam. You can control the appearance of the appearance cam. Specifically, on the side in which the rising slope surface acts on the knitting dynamic action butt, the projecting cam can be sunk by pressing the projecting cam toward the cam plate by the knitting dynamic action butt. In particular, it is preferable to form an inclined surface on the appearance cam so that the knitting movement butt comes into contact with the appearance cam so that it rises without stopping. In addition, since the descending cam is projected by the elastic body on the side where the descending slope acts on the knitted acting butt, the lower end of the knitted acting butt which jumps in contact with the descending slope can be the lower limit by the projecting cam. .

As a configuration for pressing the immersion cam with the above configuration, when using a part of the receiving cam formed on the lower side of the stitch cam, the sinking and protruding state of the The switching can be controlled. In addition, it is possible to avoid direct contact between the knitted movement butt and the projecting cam on the side where the rising slope acts on the knitted movement butt, thereby reducing the possibility of damaging both members.

Fig. 1 is a schematic explanatory diagram showing a correspondence state between a knitting needle and a cam system when a knit is selected as a knitting operation in a conventional cam system.
Fig. 2 is a schematic explanatory diagram showing an arrangement state of the projection cam in the flat knitting machine according to the embodiment.
Figure 3 is a schematic three-side view of the appearance cam, (A) is a front view, (B) is a view seen from the arrow of (A), (C) is a bottom view.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described based on drawing. The flat knitting machine of the present invention is characterized in that it has an appearance cam which does not exist in a conventional cam system, and the configuration other than this appearance cam is already described with reference to FIG. It is approximately the same as the conventional cam system described. Therefore, in the following embodiment, the same code | symbol as FIG. 1 is attached | subjected about the same member as the conventional cam system, and description is abbreviate | omitted and it demonstrates centering around difference with the conventional cam system.

FIG. 2 is a schematic explanatory diagram showing an arrangement state of the sunken cam 1 in the cam system according to the embodiment. In FIG. 2, a partial cross-sectional view of the cam plate 100 at the position where the cam cam 1 is arranged is added to the cam system from the front view. It is shown in the neighborhood of. The dashed-dotted line in a partial sectional drawing shows the height position of the knitted movement butt 70. FIG. 3 is a three side view of the sunken cam 1 on the left side of the ground shown in FIG. 2, (A) is a front view, (B) is a view seen from the arrow of (A), and (C) is a bottom view It is also. Moreover, the appearance cam 1 of the right side of the paper surface in FIG. 2 is provided with the appearance cam of FIG.

As shown in Fig. 2, the cam system of the present invention has a rising slope 8 and a falling slope 9 (a first slope 91 and a second slope 92). A pair of projecting cams 1 inserted into recesses formed in the cam plate 100 is provided at positions of gaps formed between the gaps.

The sunken cam 1 is a substantially board-shaped member, and includes a swing shaft 1s formed on the upper end side thereof and a spring seat 1g formed on the rear side of the lower end side. In addition, a plurality of surfaces 11 to 16 are formed on the front side of the projecting cam 1, that is, the side facing the knitting movement action 70 of the knitting needle 7. Moreover, the sunken cam 1 is provided with the guide inclined surface 10 from the upper end position of the surface 11 to the lower end position of the surface 14 in the side surface side.

The surface 15 of the projection cam 1 is in contact with the thin plate portion 22 of the needle raising cam 2, which will be described later, so that the upper limit of the projecting amount of the projection cam 1 can be set. It's a decision to make. When the surface 15 is in contact with the thin plate portion 22 described later, the three surfaces of the surface 14 and the surface 12 including the surface 15 are substantially parallel to the cam plate 100. The height of these surfaces 12, 14, and 15 is the highest in the surface 12 for the reason mentioned later, and is made to become low in order of the surface 14 and the surface 15 next. In addition, the surface 16 adjacent to the other end side of the projection cam 1 with respect to the surface 15 is lowered to the back side as it goes to the other end side. Moreover, the surface 11 and the surface 13 are the surfaces which adjoin to the left-right direction of the cam system with respect to the surface 12 and the surface 14, when the inlet cam 1 is arrange | positioned to the cam plate 100, respectively, It descend | falls to the back side from the surface 12 and the surface 14 side toward the protrusion part of the oscillation shaft 1s.

When this projection cam 1 is arrange | positioned in the recessed part of the cam plate 100, the one end side of the appearance cam 1 will be axially attached to the cam plate 100 by the oscillation shaft 1s. As a result, the other end can be swinged. In addition, a spring (elastic material) 19 is disposed between the spring seat 1g of the projecting cam 1 and the cam plate 100, and the other end side of the projecting cam 1 always protrudes from the cam plate 100. In contact with the thin plate portion 22 on the surface 15. The sunk cam 1 arranged in this way is a cam in a conventional cam system in a space surrounded by the cam plate 100, the needle lasing cam 2, and the bridge cam 3. It is arranged compactly without moving positions 2 and 3).

On the other hand, the stitch cam 4 includes a cam main body 41 having a second inclined surface 92 constituting the descending slope 9 and a receiving cam formed at the lower end side of the cam main body 41. The point provided with the receiving cam 42 and the thin-plate part 43 which connects the cam main body 41 and the receiving cam 42 is the same as before. However, the receiving cam 42 protrudes toward the needle rising cam 2. For this reason, the thin plate part 22 which accommodates the protrusion part 420 of this receiving cam 42 is formed in the part of the foot of the needle rising cam 2 which has a substantially mountain shape. The thin plate portion 22 is formed by cutting the back side (inside of the ground) of the needle laminating cam 2.

Knitting dynamics when the knit needle is knitted by knitting operation 1, needle rising cam 2, bridge cam 3 and stitch cam 4 having the configuration described above. The trajectory of the butt 70 will be described based on FIG.

First, when the knitting acting butt 70 flows into the needle lasing cam 2, the stitch cam 4 on the left side of the ground is raised along the second inclined surface 92, so as to the path of the knitting acting 70. The thin plate portion 43 is disposed. At this time, a part of the protrusion 420 of the stitch cam 4, that is, the receiving cam 42 presses the surface 16 of the sunk cam 1 to the cam plate 100 side, so that the other end side of the sunk cam 1 is pressed. It sinks in the recess of the cam plate 100. Finally, the projecting portion 420 presses the surface 15 of the projecting cam 1, and cams the surface 14 of the projecting cam 1 from the height position of the knitting movement butt 70 shown by the dashed-dotted line. Evacuate to the plate 100 side. Here, the height of the surface 15 of the appearance cam 1 is a height determined according to how much the appearance cam 1 sinks, and the height of the surface 14 is a two-dot chain line when the height of the appearance cam 1 is settled. The height to evacuate from the location.

The knitting movement butt 70 introduced into the needle rising cam 2 passes through the thin plate portion 43 of the stitch cam 4, and then faces 14 and 13 of the sunk cam 1 in the sinking state. It passes through the position of without contacting the indentation cam 1, and it raises toward the needle bed gap direction in contact with the rising inclined surface 8. Then, the knitting movement butt 70 passes through the position of the apex of the needle rising cam 2 and comes into contact with the first inclined surface 91 (falling inclined surface 9) of the bridge cam 3 to form a needle bed. It descends in the opposite direction to the gap.

The stitch cam 4 has a second inclined surface so that the lower end position of the second inclined surface 92, that is, the lower end position of the down inclined surface 9, becomes a desired position before the knitting movement butt 70 is in contact with the down slope 9. Descend in the direction along (92). The lowering amount of the knitting movement action 70, that is, the pulling amount of the knitting needle, is determined by the lower position of the second inclined surface 92. At this time, since the protrusion 420 provided in the receiving cam 42 of the stitch cam 4 is not in a position to act on the surface 16 of the sunk cam 1, the sunk cam 1 is a spring 19. By the elastic force of the cam plate 100 is pressed in the direction falling from the bottom of the concave portion of the cam plate 100, in contact with the thin plate portion 22 of the needle lasing cam 2 at the portion of the surface 15 is stopped.

The guide inclined surface 10 of the projecting cam 1 which has become a protruding state is disposed at a position facing the descending slope 9 (see the projecting cam 1 on the right side in FIG. 2). For this reason, even if the knitting movement butt 70 jumps in the downward direction of the stitch cam 4 when the knitting inclination contact with the first inclined surface 91 occurs, the knitting movement butt 70 is in contact with the guide inclined surface 10 and stops. It descends along the descending slope 9 without vibrating. The guide inclined surface 10 at this position is the portion with the highest height, and can reliably contact and stop the knitting movement action 70. In addition, even at the boundary between the first inclined surface 91 and the second inclined surface 92, the knitting movement butt 70 is easy to jump downward of the stitch cam 4, but in this case, the knitting movement butt 70 is It comes into contact with the guide inclined surface 10 and stops. Thus, since the knitting movement butt 70 is always in contact with the guide inclined surface 10 at a position where it is easy to jump in the downward direction of the stitch cam 4, the degree of pulling in knitting is stable even when the carriage is speeded up. We can knit knit fabric with good finish.

Here, in the case of maintenance or the like, when the knitting needle is operated by hand and the carriage is moved, the knitting movement butt 70 comes into contact with the projecting cam 1 in a state lower than the upper end position of the guide inclined surface 10. have. For example, at the height of the surface 11 or the height of the surface 13 of the appearance cam 1 shown in FIG. 2, the knitting movement butt 70 may contact the appearance cam 1. In this case, since the knitting movement butt 70 sinks on the surface 11 or the surface 13 which is an inclined surface descending toward the left side of the ground, so as to sink the cam 1, the knitting movement butt 70 is displayed. The impact of the collision of the cam 1 can be prevented from acting on both members in the front. The knitting movement butt 70 which sits on the surface 11 or the surface 13 passes through the surface 12 or the surface 14 to reach the gap between the guide inclined surface 10 and the descending inclined surface 9 and remains as it is. Go down along the descending slope (9).

The knitting needle provided with the knitting actuating butt may be a latch needle or a compound needle having a slider. Moreover, the structure of this invention is applicable also to the composite cam system provided with the cam for transfer.

0: needle bed gap
100: cam plate
1: Cam
1s: rocking shaft
1g: Spring seat
19: spring
10: guide slope
11-16: cotton
2: Needle Rising Cam
22: thin plate
3: Bridge Cam
4: Stitch Cam
41: cam body
42: receiving cam
43: thin plate
420: protrusion
7: single hand
71: needle body
72: Needle Jack
73: select jack
74: selector
70: knitting action butt
8: ascending slope
9: descending slope
91: the first slope
92: second slope

Claims (3)

A cam plate constituting one side of a carriage reciprocating in the longitudinal direction of a needle bed in which a plurality of needles are parallel, and
The needle bed gap which protrudes from the cam plate and acts on the lower end of the knitting movement butt provided in the knitting needle and becomes the upper end of the knitting butt is formed. A needle-shaped raising cam in the shape of a mountain having an upward inclined surface which extends outwards,
The bridge cam is formed to protrude from the cam plate, and has a first inclined surface that forms a part of the descending inclined surface which acts on the upper end of the knitting motion acting butt and retracts the knitting needle to the opposite side to the needle bed gap. (bridge cam),
A stitch cam protruding from the cam plate and formed on the left and right sides of the needle rising cam, having a second inclined surface constituting the remainder of the descending inclined surface, and determining a final pulling amount of the stitches. In the flat knitting machine provided with the cam system equipped with
On both sides of the needle rising cam, a pair of left and right outgoing cams disposed on the cam plate between the rising slope and the falling slope, and configured to be projected in a direction crossing the plane of the cam plate. Equipped with
The appearance cam,
On the side where the knitted movement butt rises by the inclined slope, it is sunk so as not to disturb the movement of the knitted movement butt,
A side knitting machine, characterized in that the knitting movement butt is projected to reduce the vibration value of the upper and lower sides of the knitting movement butt in the portion facing the lower end of the knitting movement butt.
The method of claim 1,
Appearance cam is a board-like member along the descending slope,
The upper end side of the appearance cam is moistened so that the lower end side of the appearance cam can swing in the direction of appearance.
The lower end side of the sunk cam is pressed in the direction which protrudes from a cam plate by the elastic body arrange | positioned between a cam plate and the sunk cam.
3. The method of claim 2,
Stitch Cam,
A cam main body having the second inclined surface, and a receiving cam connected to the lower end side of the cam main body and preventing excessively falling of the knitted moving butt descending along the second inclined surface. It is configured to be able to slide in the direction along the second slope,
The horizontal knitting machine, characterized in that for pressing the immersion cam in the sinking part of the receiving cam by the slide position of the stitch cam.

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