JPS6354819B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention is a flat knitting machine that sequentially suppresses the stitches of a knitted fabric knitted by the reciprocating movement of a carriage to prevent the stitches immediately after knitting from floating up. This invention relates to a presser device for suppressing stitches.

[Conventional technology]

In order to adapt to the knitting of stitches by the reciprocating movement of the carriage, a conventional presser was provided for knitting in the forward movement and for knitting in the backward movement.
It is disclosed in Publication No. 46156.

[Problem that the invention seeks to solve]

In the conventional pressers provided for forward and backward motion, one presser is provided for both reciprocating motion, and the form of the stitch restraining surface is the same,
Therefore, the stitch suppressing effect is performed under the same conditions throughout, and there has been no attempt to effectively suppress stitches under suitable conditions in accordance with the properties of the knitted fabric.

However, in stockinette knitting, as shown in Figure 8A, when braiding is performed with needles a on either the front or back side, the braiding machine b is biased to one side of the needle side in the sinker opening c, so that the presser is moved as shown in the figure. It is advantageous to widen the stitch holding surface, and when braiding is performed using the front and rear needles a and a as shown in Figure B, the knitting structure b is located in the middle of the sinker opening c, so it is advantageous to make the stitch holding surface wide. It is desirable to change the holding effect depending on the properties of the knitted fabric, such as it is advantageous to use a small foot for holding, and based on experiments in knitting work, in the case of Amagasa knitting, it is better to have a wide holding width and a flat shape. In the case of rubber knitting, good results have been obtained with a relatively small and round cross-section holding surface. However, in the organization work, 1
In many cases, the garment has a rubber knit followed by an Amagasa knit, and therefore, in order to accommodate this by conventional methods, using an oddly shaped pretsurf foot requires stopping operation and replacing the foot each time. , which was actually impossible.

[Means to solve the problem]

The present invention solves the problem that the conventional presser device cannot select and use a suitable stitch suppressing foot according to the properties of the knitted fabric, as described above, and uses the presser foot for forward movement and backward movement of the knitting machine, respectively. It is equipped with a plurality of pre-surfs, which can be selectively used at desired times, and the first invention is:
A base plate that is attached to a knitting carriage and moves reciprocally along the upper surface of the needle bed is provided with pressers for forward and backward movements to suppress stitches. Each presser can be moved up and down independently and can be locked in its vertical movement position, and the width of the holding surface of the stitch presser foot of each pair of front and rear pressers is made such that one is larger and the other smaller within the sinker opening of the knitting machine. A second invention is characterized in that, in the first invention, a pair of pressers for forward movement and a pair of pressers for backward movement are provided at the front and rear, respectively, and the base plate on which the pressers are provided has a mechanism for releasing the pressers that are locked in the upward movement position. A slider is provided, and at the reciprocating end of the carriage there is a control pin that acts on the slider, a guide cam that releases the presser that is locked in the lower position and moves the presser upward, and a guide cam that moves the presser in the upper position downward. A guide cam is provided.

[Effect]

The device of the present invention selects the presser of the stitch presser foot suitable for the knitted fabric according to the content of the knitted fabric, and presses the presser of a pair of front and rear pressers, which are equipped for both forward movement and backward movement, to the lowering position of the presser operation. The other inactive pressers are locked and stabilized in the upward movement position, and the selected presser is used to knit while holding down stitches during forward or backward movement, or all pressers are stopped in the upward movement position. Furthermore, the selective use of the presser, as well as the control of operation and pause, is controlled by the fluctuation of sliders that collide with control pins provided at both ends of the knitting machine when the carriage reaches the end of the knitting course. Therefore, the operating presser is unlocked, moved to the upper movement non-operating position by the guide cam, and locked, and at the same time, one of the pair of front and rear pressers to be used for the next course is selected and locked. At the beginning of knitting when the carriage changes direction after unwinding, the presser to be used is moved downward by a guide cam and is locked to hold the stitches, or in the next knitting course, the presser is controlled to be held in a resting state. .

〔Example〕

Embodiments of the invention will now be described with reference to the drawings.
1 is a knitting machine stand, 2 is a needle bed, and 3 is a knitting carriage.A substrate 4 is connected to the carriage 3 with a connecting member 3a, and this is connected together with the carriage 3 along the upper surface of the needle bed 2. A pair of pressers 5 are provided on the base plate 4 for forward and backward movements, respectively.
a, 5b, 6a, and 6b are provided so as to be able to move up and down and be immovably locked at the up and down positions. That is, the stitch suppressing feet 5'a and 5'b are bent into an L shape, respectively.
A pair of pressers 5a, 5b for forward motion formed with
A pair of double-acting pressers 6a, 6b having the same feet 6'a, 6'b are provided, with the pressers 5a, 6a positioned on the front side of the base plate 4, and the pressers 5b, 6b positioned on the rear side. Each presser 5a, 5b, 6a, 6b is a guide groove 7 of the board 4, respectively.
It is connected to a sliding member 8 that can move up and down along the vertical axis, so that it can move up and down together with each sliding member. The sliding member 8 of each presser has a locking protrusion 9 that can slide in the axial direction with both ends protruding inwardly and outwardly, and a resilient spring 10 is applied to each engaging protrusion 9 to constantly The force was applied toward the center of the substrate 4.

Forward movement presser 5 located before and after the board 4
The feet 5'a and 5'b of a and 5b have different cross-sectional shapes. That is, as shown in FIG. 5, the front foot 5'a has a wide rectangular cross section, the rear foot 5'b has a relatively small diameter round cross section, and although not shown, a pair of double pressers 6a, The feet 6'a and 6'b of 6b also have the same shape, but have mutually different cross-sectional shapes.

A pair of sliders 1 are provided on the top of the board 4 with both ends protruding from both sides of the board 4 along the reciprocating direction.
1a and 11b are superimposed with each other via a partition plate 12 and slidably inserted into each other, and each slider 11a, 1
1b includes sliding members 8, 8 of the sliders 5a, 6a, and sliding members 8, 8 of the pressers 5b, 6b, respectively.
two holes 13 corresponding to the locking protrusions 9, 8;
13 were provided, and both side edges of each hole 13 were made into inclined parts. Therefore, when the pressers 5a, 5b, 6a, 6b move upward and these locking protrusions 9 face the holes 13 of the slider, the locking protrusions 9
The inner end of the protruding piece 9 recesses into the hole 13 and is locked to the step 14 of the substrate 1 due to the biasing force of 0, so that the presser is held in the upward movement position, but it is not engaged in the upward movement position. When the locking protrusion 9 does not face the hole 13 of the slider, the presser cannot lock in the upward movement position. And the slider 11 on the front and rear sides
The sizes and positions of holes 13 and 13 in a and 11b are as follows:
The two protruding pieces 9, 9 on the front side and the rear side are both connected to each hole 1.
3 and 13, and when one of the two protrusions 9, 9 on the front side and the rear side is fitted into the hole 13, the other is in a position removed from the hole 13. , these states can be selected using both sliders 11a,
11b to set.

Further, when each presser 5a, 5b, 6a, 6b moves downward, each locking protrusion 9 is inserted into a support hole 15 provided in the base plate 4 and held in an immovable position.

Each presser 5a, 5b, 6a, 6b is pivotally attached to each sliding member 8 by a shaft 17 via a swinging piece 16, and when a spring 18 is applied to move the presser downward, guide portions 19, 20 are used. As shown in Fig. 5, the foot of the presser is kept stationary toward the center of the sinker opening c of the knitting machine, and during upward movement, the foot is opened outward so as not to interfere with the opposing presser to maintain upward movement. did.

At the reciprocating end of the carriage 3, there are a pair of control pins 21a and 21b that can be projected and retracted at any time to abut the sliders 11a and 11b of the board 4 advancing toward the end. Fixed control protruding pins 22a, 2 provided on the outside of the pins of
2b is provided on a fixed machine stand 23, and the control pins 21a and 21b that appear and retract are selectively moved in and out by an electric signal to a solenoid 24, as shown in FIG.

Further, at the reciprocating end, a locking protrusion 9 of the presser held in the upward movement position is provided for lowering the presser.
For example, as shown in FIG. They were respectively fixedly attached to a fixed member 28 such as a guide rail for moving the yarn guide piece in a knitting machine.

Incidentally, the front end of the upward movement guide cam 26 is provided with a sloped cam portion 27 for pulling out the protruding piece 9 that is thrust into the support hole 15 of the base plate 3 in the downward movement position to release the presser. Forming and guiding cam 2
5 and 26 are provided with the upward movement cam 26 at the terminal position and the downward movement cam 25 positioned inside thereof. 29
is a holding cam of a projecting piece 9 that is connected to each upper movement guide cam 26 and extends outward.

In the above embodiment, the carriage 3 moves forward to the left in the direction of the arrow in FIG. The foot 5'a of the presser 5a is in the stitch holding operation as shown in FIGS. 3 and 5. The presser 6a for backward movement and the pressers 5b and 6b for forward movement and backward movement on the rear side are in the upper movement position where stitch suppression is not activated, and the locking protrusions 9 of these pressers are as shown in FIG. front and rear sliders 11a, respectively;
11b and step part 14 of the substrate 3.
It is locked to prevent its downward movement and is held in an inoperative position. When the base plate 4 together with the carriage 3 reaches the left end in FIG.
The locking protrusion 9 of a first abuts against the inclined cam portion 27 formed at the end of the upper movement guide cam 26, and the cam pushes the inside of the head piece 9a of the protrusion 9 outward to open the support hole. 15 to release the engagement of the sliding member 8 with the base plate 3, and then the protrusion 9 is removed from the guide cam 26.
As a result, the presser 5a is pulled up above the inoperative position, and the protruding piece 9 is supported on the holding cam 29 and further moved to the left.
Thus, when the forward movement end is reached, the front and rear sliders 1
1a, 11b are control pins 21a, 21b, 2, respectively.
2a, 22b, and due to the collision action, the pressers 6a, 6b during the backward movement.
The front and rear pressers are selected for operation and rest, and for operation.

Next, the control state of the above operation will be explained with reference to FIG.

As shown in FIG. 9A, the presser 5a is in the immovable position, and its locking protrusion 9 is fitted into the support hole 15, and the presser 5a moves back and forth while holding the stitches in the immovable state, and when it reaches the left end, it moves upward as described above. The moving guide cam 26a takes the upper inactive position, and then both sliders 11a, 11b
are the control pins 21a, 21b as well as the protruding pins 22a,
The protruding and retracting pins 21a and 21b before colliding with 22b
A command signal is given to each of the solenoids 24 and 24 to make these pins appear and disappear.

If the control pin 21a is now selected and protruded by an electric signal as shown in FIG.
When a collides with the pin 21a, it is pushed back to the right, and the relative position of the pressers 5a and 6b with respect to each pin 9 changes, and the pin 9 of the presser 5a separates from the support hole 15 during the pre-operation, and then the holding cam 29
The pin 9 is supported in the upward movement position by the slider 11a, and its inner end is in contact with the side surface of the slider 11a.
3 and is supported by the stepped portion 14, so that the presser 5a is locked in the inactive upward position. On the other hand, as the hole 13 is displaced, the pin 9 of the presser 6a separates from the hole 13 through the inclined surface of its end and comes into contact with the side surface of the slider 11a, so that the presser 6a is no longer locked to the substrate 4. be done.
In addition, since the slider 11b on the other side passes through the upper surface of the control pin 21b in the retracted state and reaches the fixed pin 22b, it does not change from the previous operating position, and therefore the pressers 5b and 6b are in the locked state in the inactive upward position. Retained.

Next, when the carriage 3 changes direction and moves back to the right, the protrusion 9 of the presser 6b is moved by the lower movement guide cam 2.
When the presser 6a is pressed down by the presser 5 and reaches the lower movement position, the protruding piece 9 is fitted into the support hole 15 and locked, as shown in FIG. Then, the stitch suppressing operation during the backward movement is performed, and the pressers 5a and 6a are thus switched.

When the control pin 21b is selectively commanded to protrude as shown in D in the figure, the slider 1 is in the A state.
1a passes through the upper surface of pin 21a, but pin 22a
The projecting piece 9 of the presser 5a is pushed back by the collision with the presser 5a, and similarly to B, the protruding piece 9 of the presser 5a fits into the recessed hole 13 and is locked at the step 14, thereby locking the presser 5a in the upward movement position. Slider 11 for protruding piece 9
The hole 13 of the presser 6a simply moves to the right, and the locked state of the presser 6a at the upward movement position remains unchanged.
However, the slider 11b on the other side has a protruding pin 2.
The projecting piece 9 of the presser 6b collides with the presser 6b and is pushed back.
is released from the hole 13 and the presser 6b is unlocked, so at the beginning of the conversion to double movement, the protrusion 9 is pushed down by the lower movement guide cam 25 and is moved to the lower movement position as shown in E in the same figure. By fitting the protruding piece 9 into the support hole 15, the presser 6b is locked in the downward movement operating position, and the stitch pressing operation is performed during the backward movement. 6b is switched to the holding operation during the backward motion.

Next, as shown in the figure F, the control pins 21a, 21
If both b are set to the immersion position, both sliders 11
a, 11b are pins 21a, 21b at the forward end.
The pressers 5a, 5b, 6 pass through the upper surface and collide with the protruding pins 22a, 22b and are pushed back to the right.
Since the projecting pieces 9 of a and 6b are locked in the stepped portion 14 while being fitted into the respective recessed holes 13, all the pressers are locked in the up-moving inactive position and restored as shown by G. Stops stitch holding during movement. The above operation describes the selection of the backward presser 6a, 6a after the front presser 5a reaches the moving end in the active position and changes direction during forward movement, and the control work for the pause operation. When the rear presser 5b reaches the end in the active position, when one of the front and rear pressers 6a, 6b reaches the end in the active position during backward movement, and when the presser reaches the end in the rest state during both reciprocation, The control pins 21a and 21 that selectively appear and retract as described above are also used to control when the
This is done by the displacement of the sliders 11a, 11b due to the collision between the protruding pins 22a and 22b.

In this way, when the pair of front and rear pressers for forward movement and backward movement collectively reach the reciprocating end of the carriage 3 and change direction, a desired presser is selected to perform the stitch holding work or to perform stitch holding. It moves back and forth in a resting state.

〔Effect of the invention〕

According to the first invention, a pair of forward and backward pressers is provided as a stitch presser during knitting, and the cross-sectional shapes of the stitch presser feet of the front and rear pressers are different, so that one pair is set within the width of the sinker opening. Since the larger one is formed smaller than the other, it is possible to select and use a suitable presser depending on the content of the knitted fabric, thereby achieving the effect of accurately suppressing stitches and knitting a good knitted fabric, and according to the second invention. is equipped with a slider for locking and releasing each presser on the board on which the two sets of pressers for the front and rear pairs are provided, and also equipped with control pins acting on the sliders at both ends of the knitting machine and guide cams for vertical movement of each presser. Thus, when these pressers reach the reciprocating end of knitting operation, the desired presser can be automatically controlled to be put into a selective use state or into a rest state.

[Brief explanation of the drawing]

FIG. 1 is a front view of a flat knitting machine equipped with the device of the present invention;
Figure 2 is its plan view, Figure 3 is an enlarged front view of the main parts, Figure 4 is its plan view, and Figure 5 is the same as in Figure 3.
6 is a partial enlarged sectional view, FIG. 7 is a sectional view taken along the line - in FIG. 4, FIGS. 8A and B are side views showing the stitch suppressing operation state, and FIGS. G is a plan view showing the control operation of the presser. 3... Carriage for organization, 4... Board, 5a, 5
b... Forward presser, 6, 6a... Reverse presser, 5'a, 5'b, 6'a, 6'b... Stitch presser foot, 9... Locking protrusion, 11a, 11b...
...Slider, 21a, 21b, 22a, 22b
...Control pin, 25...Lower movement guide cam, 26...
Upper movement guide cam, a... knitting needle, b... knitting fabric, c...
Sinker opening.

Claims (1)

[Scope of Claims] 1. A presser for forward and backward movements is provided on a base plate that is attached to a knitting carriage and reciprocated along the upper surface of the needle bed, in which pressers for forward and backward movements are provided. A pair of pressers are provided at the front and rear, so that each presser can be moved up and down independently and locked at the vertical movement position, and the width of the pressing surface of the stitch presser foot of each pair of front and rear pressers is set within the width of the sinker opening of the knitting machine. A presser device for suppressing stitches in a flat knitting machine, characterized in that one side is made larger and the other smaller. 2. In a machine in which pressers for forward and backward movements are provided on a base plate that is attached to a knitting carriage and reciprocated along the upper surface of the needle bed, a pair of pressers for forward movement and a pair of pressers for backward movement are provided in the front and rear. , so that each presser can be moved vertically independently and stabilized in its vertically moving position, and the width of the presser surface of the stitch presser foot of each pair of front and rear pressers is set such that one is larger and the other is smaller within the width of the sinker opening of the knitting machine. The board on which the presser is installed is provided with a slider for releasing the presser that is locked in the upward movement position, and control pins that act on the slider are provided at both ends of the knitting machine, and a slider is provided at both ends of the knitting machine to release the presser that is locked in the downward movement position. 1. A presser device for a flat knitting machine, characterized in that a guide cam for moving the presser upward and a guide cam for moving the presser downward from an upward movement position are provided.