JPH0156174B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Application Field) The present invention is a horizontal stockinette knitting machine equipped with a pair of left and right stitches so that the knitting work is performed by the reciprocating movement of the carriage. The present invention relates to a device for converting the upper and lower positions of the stitches to set one selected stitch at a desired stitching position.

(Prior art) In a horizontal stockinette knitting machine, a pair of left and right stitches are provided in order to cope with knitting work in reciprocating motion, and the vertical position of the stitches is changed at the knitting end, and the selected one stitch, that is, rearward in the knitting direction. For example, in the Japanese Patent Application Publication No. 2003-190001, the threads located at
54-93153 or Japanese Patent Application Laid-open No. 59-1751.

(Problems to be Solved by the Invention) In the above-mentioned conventional technology, the dowel that is in one of the lower operating positions at the knitting end is moved upward to the upper rest position, and after both are in the upper position, The operation of selecting the sewing thread located at the rear and moving it to the lower stitching position is performed when the knitting carriage reaches the knitting end. This is done by a communication mechanism that uses a collision action with a fixed member such as a cam or a receiving piece. Therefore, this interlocking mechanism device complicates the structure of the knitting machine, places a heavy burden on design and manufacturing, and requires the use of parts. When the knitting width changes due to the colliding operation, it is necessary to change the position of the fixed colliding member accordingly, and this variation generally requires manual intervention, and especially when fine adjustment is required, the time and effort required is extremely high. It was troublesome, and the noise generated during collision caused environmental problems.

Furthermore, the cam used for setting the stitch position in the conventional means is a spiral cam having a parabolic working surface, and when used, for example, the cam operating point can be changed from the shortest diameter part to the longest diameter part, or When changing from the long diameter portion to the shortest diameter portion, it is necessary to rotate the cam by the entire length of the cam operating surface, which is disadvantageous for high-speed switching of the point of action.

(Means for Solving the Problems) The present invention solves the above-mentioned prior art, and provides an operation in which the stitching thread in the operating position is brought to the upper movement rest position at the end of the knitting, and the stitching thread in the resting position in the upper movement position is lowered to the stitching action position. Instead of the conventional mechanism operation, all the movements are activated by electrical signals, and are executed accurately based on computer commands, for example, and the stitching is performed on the board of the knitting carriage in the direction that produces the maximum amount of stitches. By applying a traction spring, a pair of left and right sliding pieces, each integrally connected to a thread, are provided at the knitting end so as to alternately change the vertical position, and the sliding pieces are interlocked with a pulse motor or a stepping motor between the two sliding pieces. An interlocking mechanism is provided between the cam and the sliding pieces on both sides, and depending on the amount of rotation of the cam, the interlocking mechanism sets the sliding piece that moves downward under the bias of a spring to the desired stitch amount position. In this device, the cam interlocked with the motor is an eccentric circular cam, and a locking mechanism is provided to lock both sliding pieces at a position slightly below the upper limit position, so that the rotation of the circular cam set by the motor is prevented. The movement causes both sliding pieces to simultaneously move upward to the upper limit position via the interlocking mechanism, and at the same time, the sliding piece that was in the paused upward movement position during the previous knitting is released by a signal to the solenoid to move the sliding piece upward. It is characterized in that the movable piece is moved downward by the traction of a spring and is supported and held by the stitch amount setting action surface of the circular cam.

(Function) The stitch conversion actuating device according to the present invention applies an electric signal of a set number of pulses to the motor at the end of the knitting, thereby setting the longest diameter part of the eccentric circular cam with the entire circumference as the cam actuating surface as the actuating point. A sliding piece of the stitch which is operated with maximum momentum in the interlocking mechanism and is at the lower stitch position at the rear position with respect to the knitting direction during knitting;
During knitting, the sliding piece of the other dowel, which was located forward in the knitting direction and held in the upper rest position slightly below the upper limit position, is moved upward to the upper limit position, and in that upward movement The sliding piece that has moved upward from the lower stitch position is locked by the locking mechanism, and the locking portion of the other sliding piece that has moved upward from the locked state becomes slack. At this point, an electrical signal is sent to the solenoid attached to the locking mechanism on the one side of the slide where the lock is loosened, and the solenoid is energized to release the lock on the sliding piece, and in synchronization with this, the circular cam is moved to the next position. When the motor rotates the circular cam a desired amount from the stopped state at the longest diameter section using an electric signal that sets the stitch position in the knitting course, the unlocked sliding piece moves downward under the force of the traction spring. , the sliding piece that moves downward is supported against a traction spring by an interlocking mechanism activated by the set position of the cam operating surface of the circular cam to set and hold the stitching thread at a desired stitching position. By performing the above operations at both ends of the formation, it is possible to smoothly repeat the conversion operation of the left and right heaps during the reciprocating movement of the carriage, and since the activation is performed by an electric signal, the activation is easy. The command can be given at any suitable time, and after the completion of one course, the command for the conversion operation can be accurately given at any time between the completion of the composition of one course and the composition of the next course.

In addition, the eccentric circular cam can be used as a continuous cam operating surface over its entire circumference, and when the cam operating point is selectively moved by rotating the cam, the circular cam can be rotated in any direction, so it is not currently used. It is possible to quickly set the desired operating point from the middle operating point to the next desired operating point with the minimum amount of rotation, and in combination with the start command means using an electric signal, it is possible to quickly respond to high-speed operation of the knitting machine.

(Example) Embodiments of the device of the present invention will be described with reference to the drawings.

In the drawing, 1 is a board integrated with a knitting carriage (not shown), on which a pair of left and right 2 and 2' are moved up and down along respective groove holes 3 provided in the board 1 and opposed in a figure eight shape. A pair of sliding pieces 4, 4' are attached to each groove 2, 2' by sandwiching the slot 3, and each sliding piece 4, 4' is actuated with a traction spring 5. The sliding pieces 4, 4' together with the ridges 2, 2' are urged downward so that the amount of stitching acting on the butt (not shown) of the knitting needle is maximized.

An eccentric circular cam 7 is provided between the two sliding pieces 4, 4', and is rotated by being directly connected or linked to a pulse motor or stepping motor 6. An interlocking mechanism 8 was provided between them.

The interlocking mechanism 8 includes a moving piece 10 that moves up and down along a guide piece 9 as the circular cam 7 rotates, and a pair of left and right rotating pieces 11 that rotate in conjunction with the up and down movement of the moving piece 10. The rotating pieces 11 on both sides each have a shaft support 11a in the middle, and a trochanter 11b at the tip of one arm 11b that projects from the shaft support to both sides.
are located on the lower surface of the lower end of the sliding pieces 4, 4', respectively, and the small protrusion 11e at the tip of the other arm 11c is located on the lower surface of the restraining piece 10a protruding from the movable piece 10, respectively, so that the circular cam 7 can be rotated. When the movable piece 10 is moved downward, the small protrusion 11e of the restraining piece 10a is pressed down, the respective rotating pieces 11 are rotated, and the sliding pieces 4, 4' are moved upward by the trochanter 11d at the tip of the other arm 11b. Further, when the traction spring 5 acts on each sliding piece 4, 4' as the circular cam 7 rotates, the sliding piece 4, 4' is moved downward by its tensile force. Therefore, one arm 11b of the rotating piece 11 is pressed down by the downward biasing of the sliding pieces 4, 4' by the traction spring 5, so that the other arm 11c of the rotating piece 11 is moved upward. The small protrusion 11e at the tip pushes up the restraining piece 10a of the movable piece 10, so that the movable piece 10 is always pressed against the cam operating surface of the circular cam 7. In this way, when the longest diameter point 7b of the cam operating surface of the circular cam 7 is opposed to the movable piece 10, the movable piece 10 is lowered to the lowest position against the traction spring pressure, and the suppressing piece 10a closes both rotating pieces. 1
1 by pressing down each arm 11c of the other arm 11b.
The upward movement causes both sliding pieces 4, 4' to simultaneously move upward to the upper limit position. A locking mechanism 12, 12' for locking each sliding piece 4, 4' is provided on the outside of each sliding piece 4, 4' at the upper limit position.

Both locking mechanisms 12, 12' are configured such that when the sliding pieces 4, 4' reach the upper limit position as shown by the phantom lines in FIG. It consists of a locking piece 12b that protrudes into the lower surface of the portion 4a, and a solenoid 12a for releasing the lock, and after the sliding pieces 4, 4' are set to the upper limit position as described above, the circular cam 7 is In order to set the stitch position, it rotates from the operating position of the longest diameter point to the next operating position, and along with this, the rotating pieces 11, 11' on both sides rotate, and the sliding pieces 4, 4' by each arm 11b rotate. When the push-up support is released, the sliding pieces 4, 4' are held in place by the locking piece 12b at the position shown by the solid line in FIG. 4, which is slightly lowered from the upper limit position, and the locking is released. As mentioned above, by the rotation of the circular cam 7, the sliding pieces 4 and 4' on both sides are simultaneously moved upward to the upper limit position using the longest diameter point 7b of the cam operating surface as the operating point, and by this upward movement. As shown in the phantom line in Figure 4, the locking piece 1
When the locking relationship between 2b and the stepped portion 10a is loosened, the solenoid 12a is energized by an electric signal command,
Smoothly move the locking piece 12b against the step part 1 against the spring 12c.
I made it move away from 0a.

Furthermore, before the locking by the locking mechanisms 12, 12' described above is released and the sliding pieces 4, 4' move downward under the bias of the spring 5, the circular cam 7 is activated by a setting pulse signal to the motor 6. When the cam action point is selectively moved from the longest diameter point 7b to a desired position by rotating the arm 11b, the sliding member 11b is lowered at the set position due to the rotation of the rotary pieces 11, 11' accompanying the set position. The movable pieces 4, 4' are stopped from descending and held at that position.The holding position is the stitch position, and the setting of this position is determined by the cam between the shortest diameter point 7a and the longest diameter point 7b on the cam operating surface. The adjustment can be made at the position of the operating point and by the command signal to the selection motor 6.

In the embodiment shown in FIG. 1, the knitting is performed in the direction indicated by arrow A, so that
The circular cam 7 moves downward to the stitch position.
The shortest diameter point 7a of the movable piece 10 sets it to the highest moving position, and therefore the arm 11b of the rotating piece 11 holds the left sliding piece 4 in the lowered position, and the stitch amount of the thread 2 is maximized. Indicates the case of position. The dowel 2' on the other side is in the upper rest position, and its sliding piece 4' is locked and held by a locking mechanism 12', and the position is slightly lower than the upper limit position, In this case, one arm 11b of the right rotating piece 11' is in a position away from the lower surface of the sliding piece 4', similar to the left side. In this state, the knitting progresses, and before the knitting of one course is completed and the next course is knitted, a signal pulse is sent to the motor 6 to point the longest diameter point 7b of the circular cam 7 as shown by the dotted line in Figure 1. Moving piece 10
When the circular cam 7 is rotated by a predetermined amount so as to be in contact with the cam 7, both the dowel 2 at the stitching operation position and the dowel 2' at the rest position, which was locked at a position slightly below the upper limit position, are raised to the upper limit position. At this time, the locking piece 12b engages the spring 12c with respect to the left sliding piece 4.
automatically protrudes into a locked state on the stepped portion 4a,
The right sliding piece 4' gives a command signal to the solenoid 12a in its upper limit position, and by moving upward to the upper limit position, the loosened locking piece 12b in the locking relationship is released. In synchronization with this, the circular cam 7 is rotated by a predetermined amount by a pulse signal to the motor 6, and the desired operating point of the cam operating surface is brought into contact with the 10 pairs of moving pieces. 11' are rotated together, and the arm 11b of the left rotating piece 11 is at a lower position separated from the lower surface of the sliding piece 4, and the sliding piece 4 is engaged with the locking mechanism 12 at a position slightly below the upper limit position. The arm 11b of the sliding piece 4' on the right side is also moved downward, and the lowered position corresponds to the setting of the stitch amount.At this position, the lock is released and the traction spring 5 The sliding piece 4' is supported and held by the biasing force, so that the right stitch 2' is at the operating position for the desired stitch amount.

In addition, in order to accurately maintain the operation stop position of the sliding pieces 4 and 4' on both sides, the restraining piece 10a of the moving piece 10 is made to be able to move up and down slightly relative to the moving piece 10, and the moving piece 10 is inserted through the stopper piece 10a. The restraining piece 1 is a circular regulating piece 10c provided eccentrically at the tip of the screw piece 10b.
The lower surface of the restraining piece 10a is supported, and the position of the restraining piece 10a can be finely adjusted up and down by rotating the screw piece 10b.

Further, since the entire circumference of the circular cam 7 can be used as the working cam surface, by instructing the rotation direction when giving the rotation command, the amount of rotation from the desired setting position facing the moving piece 10 to the stopped position can be adjusted. The motor 6 can be selectively rotated in a small number of directions to perform quick conversion operations, and can cope with high-speed operation of the knitting machine. Commands can be issued in a timely manner using data input into the computer in advance.

(Effects of the Invention) According to the present invention, an eccentric circular cam for interlocking the motor is provided between a pair of tension crests and the left and right sliding pieces integrally connected to each other, and the entire circumference of the eccentric circular cam is used as the working cam surface, and the electric Depending on the direction of rotation of the cam, which rotates in response to a signal, and the desired amount of rotation, the sliding piece is at the stitching operation position in the previous knitting process, and the sliding piece is at the rest position, where it is locked slightly below the upper limit position. At the upper limit position, the locking mechanism is applied to the sliding piece on the side to be moved to the next rest position, and the locking on the sliding piece on the side to be set to the stitching position is released. Then, this is moved down by a spring to the stitch operation position, and the stitches are converted.The conversion operation is performed by the rotation of a circular cam, and the conversion operation is performed by applying electricity to the motor commanded by the computer. Since it is activated by a signal and the locking mechanism is also released by a solenoid, it is possible to omit the use of mechanical devices such as conventional mechanical devices such as abutment operation, and to change the tension in a timely and accurate manner. Since the circular cam for operation uses the entire circumferential surface as the cam operating surface, by commanding the direction of rotation of the cam, the point of action on the cam operating surface can be set in a short time with the minimum amount of rotation, and the above-mentioned electrical signal can be set. This has the effect of being able to cope with high-speed operation of the knitting machine.

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of the device of the present invention, FIG. 2 is a partially cutaway side view taken along the line - in FIG. 1, and FIG. 3 is a partially cutaway plan view taken along the line - in FIG. 1. , FIG. 4 is a partial side view illustrating the locking operation for the sliding piece. DESCRIPTION OF SYMBOLS 1... Board, 2, 2'... Dowel, 4, 4'... Sliding piece, 5... Traction spring, 6... Motor, 7... Eccentric circular cam, 8... Interlocking mechanism, 12, 12'...
Locking mechanism.

Claims (1)

[Claims] 1. A traction spring is applied to the base plate of the knitting carriage in the direction of the maximum stitch amount, and a pair of left and right sliding pieces, each integrally connected to the stitch thread, are provided so as to alternately change the vertical position at the knitting end. A cam interlocked with a pulse motor or a stepping motor is provided between the two sliding pieces, and an interlocking mechanism is provided between the cam and the sliding pieces on both sides. In this device, the sliding piece that moves downward with force is set at the desired stitch amount position, and the cam that is linked to the motor is an eccentric circular cam, and both sliding pieces are locked at a position slightly below the upper limit position. A locking mechanism is provided, and by the rotation of a circular cam set by a motor, both sliding pieces are simultaneously moved upward to the upper limit position via an interlocking mechanism, and at the same time, the sliding pieces that were in the resting upward position during the previous knitting are moved upward at the same time. The locking of the sliding piece is released by a signal to a solenoid, and the sliding piece is moved downward by the pull of a spring, and is supported and held by the stitch amount setting cam action surface of a circular cam. conversion device.