JPS641976Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a stitch adjustment device for a hand knitting machine, and particularly to a stitch adjustment device for a single-pull type hand knitting machine.

[Prior art]

When the carriage mounted on the needle bed moves in the direction in which the knitting needles are arranged, the knitting needles perform a complete knitting operation one by one, and during this time, the adjacent knitting needles do not operate at all. Hand knitting machines that perform so-called "single pull" knitting are already known. In this case, a rotating body in the form of a sprocket, for example, is used as the knitting needle operating body, and the teeth of this rotating body push and move the butts of the knitting needles, causing the knitting needles to perform a knitting operation.

In this type of hand knitting machine, in order to adjust the stitches, that is, the amount of movement of the knitting needles, conventionally a method was used to shift the position of the rotating body. Since the placed board must be moved on a carriage, the overall structure is complex, and there are disadvantages in that it requires precision in the arrangement of each component and high manufacturing precision to ensure reliable operation even after being moved. .

[Purpose of invention]

The present invention was devised in order to eliminate the drawbacks of the conventional hand knitting machine as described above, and its purpose is to provide a simple structure that allows for easy and accurate stitch adjustment work, and a smooth The object of the present invention is to provide a new stitch adjustment device that operates in the following manner.

[Structure of the idea]

In order to achieve this objective, the present invention has the following configuration. That is, a carriage is provided above the needle bed so as to be movable in the direction in which the knitting needles are arranged, and an endless belt made of a flexible material such as rubber and capable of being rotated is provided on this carriage. The endless belt is guided by being stretched between the guiding bodies, and the knitting needle actuating piece is protruded from the outer circumferential surface of the endless belt.
When the endless belt rotates in one direction, a stitch is knitted by moving one knitting needle back from the flat-out position to the knock-over position by the knitting needle operating piece in the endless belt straight portion between the pair of front and rear guide bodies. The rear guide body is provided so as to be movable back and forth within a certain range with respect to the front guide body,
An adjustment member for changing the arrangement of the rear guide body back and forth is connected to the rear guide body, and by changing the arrangement of the rear guide body back and forth by the adjustment member, the endless belt between the pair of front and rear guide bodies can be adjusted. The length of the straight portion is changed to change the amount of retraction of the knitting needles by the knitting needle actuating piece, and furthermore, a belt tension mechanism is attached to the endless belt to keep the endless belt under tension at all times.

〔Example〕

Embodiments of the present invention will be described in detail based on the drawings.

A carriage 1, shown in its entirety in FIG. 1, is disposed on a laterally long needle bed D so as to be movable in the direction in which the knitting needles are arranged.

A substantially inverted U-shaped bracket 3 is fixed onto the base plate 2 of the carriage 1 by screws 4, and an operating disc 7 equipped with a knob 6 is rotatably supported on a shaft 5 that is erected on the bracket 3. has been done. In FIG. 1, this operating disk 7 and the shaft 5 are shown in phantom lines in order to make clear the other parts hidden by them. A bevel gear 8 is integrally formed on the lower surface of the operating disc 7, and a pinion 10 fixed to a rotating shaft 9 perpendicular to the shaft 5 meshes with this bevel gear. The rotary shaft 9 is supported in a gear case 12 of a gear train 11, and is connected to shafts 14, 15 via five gears 13 (see FIG. 4) in the gear train 11.

The shaft 14 is connected to a feed gear 26 via bevel gears 16, 17, a shaft 18, spur gears 19, 20, 21, 22, partially toothed gears 23, 24, and a spur gear 25, and this feed gear 26 is further connected to a needle bed. It is engaged with a rack (not shown) fixed to. Gear mechanism 16~
26 is for interlocking, decelerating and intermittent operation. Now, grab the knob 6 and press the operating disc 7.
When rotated clockwise in FIG. 1, the feed gear 26 is driven via the aforementioned members 8, 10, 9, 13, 14, 16-25, and the carriage 1 is reciprocated along the rack at an appropriate speed. Moving.

The shaft 15 is connected to a knitting needle drive mechanism.
The end of the shaft 15 is rotatably supported on a bracket 27 fixed to the base plate 2 and having a U-shape when viewed from above. Inside this bracket 27,
A sprocket 2 as a front guide is attached to the shaft 15.
8 is fixed. This sprocket 28 rotationally drives an endless belt 29 wound around it. For this drive, the endless belt 29 has a number of holes 29' on its side edges, and a sprocket 28.
is provided with teeth 31 which engage this hole 29'.
The endless belt 29 is further provided with protruding knitting needle operating pieces 30 for pushing the knitting needles A at a constant pitch perpendicular to the belt plane.

rollers 32 for guiding the endless belt 29;
34 and 35 are provided. The roller 32 is the shaft 3
3 and is rotatably supported on the bracket 27. The roller 34 is rotatably supported by a shaft 36 fitted into an elongated hole 38 formed in a bracket 37 so as to be movable up and down. This bracket 37 has a U-shape when viewed from above, and is fixed to the substrate 2 with screws or the like (not shown). Further, the middle portion of a bifurcated spring 39 is attached to the bracket 37 with screws 40. This spring 39 contacts both left and right end portions 36' of the shaft 36 that protrude outward from the bracket 37 to the left and right, and urges the roller 34 in a direction that tensions the endless belt 29. Roller 34 and spring 39 thus form a belt tensioning mechanism.

The roller 35 as a rear guide is rotatably mounted on a movable bracket 42 by a shaft 41. This bracket 42 is approximately U-shaped when viewed from above, and is inserted into the bracket 37 and connected to the slider 45 by screws 44.

A guide 43 for the butt a of the knitting needle A is fixed by a screw 46 to one end of this slider 45, which serves as an adjustment member for changing the arrangement of the roller 35 back and forth. This guide 43 includes a stopper 43' that restricts the backward position of the bat a, and a cam 43'' that restricts the forward movement of the bat after contacting the stopper and guides the bat.

The slider 45 is approximately U-shaped, and extends from the outside of the bracket 37, passes between the brackets 3 and 27, and reaches below the stitch adjustment dial 47. It can be slid on.

A dial 47 serving as an adjusting member for changing the arrangement of the roller 35 back and forth is rotatably supported by a pin 49 erected on the bracket 48, and has a spiral grooved cam 50 on the bottom surface. A short pin 51 erected on the slider 45 is engaged with the grooved cam 50 . The dial 47 is further
As shown in FIG. 2, it is provided with notches 52 and teeth 53 on its sides. The notch 52 facilitates manual rotation of the dial, and the teeth 53, together with the elastic stop 54 engaging therein, serve to hold the dial in the respective rotational position. One end of the elastic stopper 54 is fixed to the base plate 2 by a screw 55, and the other end is constantly engaged with the teeth 53 of the dial due to its own elastic force. The other end of this elastic stopper 5 slides on its teeth 53 when rotating the dial 47.

[Effect]

The hand knitting machine constructed as described above operates as follows.

In advance, the knitting needle A of the knitting section is placed at the flattening position and the knitting yarn is passed through the hook, while the carriage 1 is placed at one end of the knitting section, and the knob 6 is grasped and the operating disc 7 When rotated clockwise in FIG. 1, the sprocket 28 is driven via the bevel gear 8, pinion 10, rotating shaft 9, gear 13, and shaft 15, and the sprocket rotates the endless belt 29 in the direction of arrow B. . Thereby, a certain knitting needle actuating piece 3
0 means that the butt a of one knitting needle A is from the fixed cam 56 to the stopper 43', that is,
Push from the bell release position to the knock over position,
The knitting needles are made to perform a single-pull knitting operation. The amount of retraction of the knitting needles at this time is indicated by l in FIG.

When the dial 47 is rotated in the direction of arrow C to adjust the stitches, that is, the amount of retraction of the knitting needle A, the pin 51 is guided by the spiral groove 50, so the pin 51 is held firmly. The slider 45 moves to the left in FIG. As a result, the bracket 42 fixed to the slider 45 with screws 44, the roller 35 supported by this bracket 42, and the guide 43 fixed to the slider 45 with screws 46 move together with the slider 45. When the roller 35 moves, the sprocket 28
The length of the straight portion of the endless belt between the roller 35 and the roller 35 becomes longer, the amount of retraction of the knitting needle A by the knitting needle actuating piece 30 changes, and the stitches are adjusted to be larger. This amount of retraction is indicated by l' in FIG.

When adjusting this stitch, the slider 45 and roller 35
is held in its displaced position by an elastic stopper 54 and teeth 53, and the endless belt 29
The tension is kept constant even after the stitch adjustment due to the action of the roller 34 guided along the elongated hole 38 and the spring 39. Furthermore, the guide 4 along with the roller 35
3 moves, even after the stitch adjustment, the butt a is reliably regulated from retreating and is guided smoothly.

Note that the endless belt 29 may be made of other flexible materials other than rubber, such as synthetic resin materials.

Furthermore, the endless belt 29 may be made of a stretchable material. In this case, by changing the arrangement of the rear guide body 35 back and forth, the endless belt 29 is expanded and contracted, and the amount of retraction of the knitting needles A is changed.

[Effect of idea]

In the present invention, since the flexible endless belt 29 is used as the knitting needle drive body, the knitting needle A can be operated softly without impact, and the guiding roller 35 of this endless belt can be moved to move the knitting needle A. Since the amount of retreat is adjusted, stitch adjustment can be performed accurately and easily. Furthermore, since there is no need to move the entire knitting needle actuating body and its driving device as in the prior art, the stitch adjustment structure is simple.

Furthermore, since tension is applied to the endless belt 29 by the pressing members 34 and 39, the tension of the endless belt can be kept constant even after the stitch adjustment. Therefore, the knitting needle actuating piece 30 of the endless belt 29 can accurately actuate the knitting needle A even after the stitch adjustment.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a carriage equipped with a stitch adjustment device according to the present invention, FIG. 2 is a sectional view of the carriage taken along the line - in FIG. 1, and FIG. 3 shows the state after stitch adjustment. 2 is a sectional view similar to FIG. 2, and FIG. 4 is a side view of the gear device shown in FIG. 1. 1... Carriage, 28, 35... Guide body, 2
9...Endless belt, 30...Knitting needle operating piece, 34...
...Contact roller, 39...Spring, A...Knitting needle.

Claims (1)

[Utility Model Claims] 1. A carriage 1 is provided on a needle bed so as to be movable in the direction in which the knitting needles are arranged. A rotatable endless belt 29 made of a flexible material such as rubber is provided on the carriage 1. The endless belt 29 is stretched between at least a pair of front and rear guide bodies 28, 35 for guidance. A needle operating piece 30 is provided on the outer circumferential surface of the endless belt 29. When the endless belt 29 rotates in one direction, one knitting needle A is moved back from a needle-out position to a knock-over position by the needle operating piece 30 in the straight portion of the endless belt between the pair of front and rear guide bodies 28, 35 to knit a stitch. The rear guide body 35 is provided so as to be movable back and forth within a certain range relative to the front guide body 28, and adjustment members 45, 47 for changing the position of the rear guide body 35 back and forth are connected to the rear guide body 35. By changing the position of the rear guide body 35 in the front-rear direction by the adjustment members 45, 47, the endless belt 2 between the pair of front and rear guide bodies 28, 35 can be adjusted.
The length of the straight portion of the needle actuating piece 30 is changed.
The stitch adjusting device for a hand knitting machine is characterized in that the amount of retreat of the knitting needle A by the endless belt tension mechanism is changed by the endless belt tension mechanism, and further, a belt tension mechanism for constantly tensioning the endless belt is attached to the endless belt.
The roller 34 is always rotated in the direction of the endless belt 29.
4. A stitch adjusting device for a hand knitting machine according to claim 1, characterized in that said device is constituted by a spring 39 which presses against the inner peripheral surface of said stitch adjusting device.