JPH0372737B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a horizontal stockinette knitting machine, in which a knitting cam or a transfer cam, etc. installed on the main plate of a carriage, is in an operating position in which it protrudes from the bottom surface of the main plate or in a recessed state. The present invention relates to a cam protrusion/retraction control actuation device that is set to an inoperative position.

(Prior art) As a cam control device for this type of knitting machine, when the carriage reaches the reciprocating end of knitting work, a slider installed on the carriage collides with an abutment piece provided in advance at the reciprocating end. The actuating cam for knitting is selected by an interlocking mechanism using this as a driving source, using a driven member that rotates due to the movement of the slider due to the reaction or collision with a cam member provided at the reciprocating end. The device is automatically placed in the active state or inactive, and conversely, the device is switched from the inactive state to the active state.

(Problems to be Solved by the Invention) The above-mentioned conventional means for controlling the protrusion and retraction of the knitting cam of a knitting machine uses an actuating member such as a slider that particularly protrudes from both sides of the carriage at each end of the reciprocating motion of the carriage. Since the drive source is the abutting action between the abutting members installed opposite the outer operating member at the top of both ends of the needle bed of the knitting machine, the operating members on the carriage side, such as sliders, must be operated from both sides of the carriage. It is necessary to protrude an appropriate length, and a stitch suppressing device, a yarn feeding means, and various other conversion and switching equipment are installed at the top of both outer sides of the needle bed, and the slider, etc. It is very difficult to design a long protruding operating member, and also to install a matching member corresponding to the operating member so as not to interfere with the other equipment mentioned above, and when the knitting width changes, it is difficult to design. Since the reciprocating stroke amount of the carriage is adjusted accordingly, it is necessary to change the position of the abutment members at both ends, which requires an adjustment device and its operation, and furthermore, the change in knitting width does not occur from the center. If the left and right parts are not equally divided, the devices and means for adjusting the positions of the left and right matching members become more complicated, and it is difficult to automate each operation in a computer-controlled knitting machine. Cam control in the middle was impossible.

(Means for Solving the Problems) The present invention eliminates the disadvantages and inconveniences of the above-mentioned conventional means, and uses a pulse motor as a drive source to convert its accurate forward and reverse rotational motion into linear motion to move a slider a set amount. This system uses a solenoid activated by an electric signal to cause the cam to move in and out at the appropriate time at the reciprocating end of the carriage corresponding to the knitting width. A cam support device that moves an elevating piece integrated with the cam up and down and applies a spring in the downward movement direction, and sets the cam's protruding position due to the bias of the spring to the operating position, and a base plate that is integrated with the knitting carriage.
A cam support device in which an elevating piece integrated with a cam moves up and down and a spring acts in the downward movement direction, and the cam's protruding position due to the bias of the spring is the operating position, and a slider with a chevron-shaped cam formed on the upper edge. is placed on the base plate,
The cam vertically moving device moves the lifting piece up and down on the chevron-shaped cam surface by the movement of the slider, and the intermediate position of the lowering movement of the lifting piece that moves downward under the bias of a spring is set as the cam rest position. A cam protrusion control device using a stopper controlled by a solenoid that locks the downward movement of the slider, and a slider drive device that includes a pulse motor installed in the formation carriage to move the slider horizontally by a predetermined amount according to a pulse signal at any time. Become.

(Function) In the present invention, the cam 2 provided on the main plate 1 moves the slider 5 due to the engagement relationship between the elevating piece 3 integrated with the cam and the chevron-shaped cam surface 6 of the eraser 5 that moves in conjunction with the pulse motor 7. When the cam 2 engages with the lower part of the chevron-shaped cam surface 6, the cam 2 protrudes a predetermined amount from the lower surface of the main plate 1 by the bias of the spring 4, as shown in FIG. It will be in the operating position of colliding.

To move the cam 2 backward from this state and put it in a resting state, the motor 7 is rotated by a predetermined pulse signal, and the slider 5 is moved by the engagement of the drive gear 7a with the rack 5a integrated with the slider 5. The movement of the chevron-shaped cam surface 6 causes the elevation piece 3 to be moved upwardly against the spring 4 by the high portion of the cam surface 6, and the cam 2 is therefore retracted from the operating position;
If the high part of the cam surface 6 passes, the elevating piece 3 will release the spring 4.
However, the stopper 8 that contacts the side surface of the lifting piece 3 with spring pressure fits into the recess 3a of the lifting piece 3 to lock the downward movement of the lifting piece 3 and stop the cam 2. position.

In order to bring the cam 2 from the rest position to the operating position, a signal is sent to the solenoid 10 to release the lifting piece 3 from the stopper 8, and the cam 2 is brought to the operating position by the bias of the spring 4. .

Therefore, the movement of the slider 5 by the pulse motor 7 and the operation of the stopper 5 can convert the cam 2 between the operating position and the rest position. Further, as shown in the illustrated embodiment, when various operating cams 2 are arranged in multiple stages on the main plate 1, a slider 5 of a length that can be used in common for the number of cams 2 in each stage is used, A chevron-shaped cam surface 6 is formed on each slider 5 corresponding to the number of cams in each stage, and the adjacent sliders 5 in each stage are integrally connected with continuous pieces 12,
For those that are separated, the rotating piece with the center pivoted is connected to the continuous piece 12.
By connecting the first slider 5 with the pulse motor 7, the sliders 5 of the other stages can be simultaneously moved by the desired amount, and the operation of the plurality of cams 2 and the conversion operation of the rest position can be performed simultaneously. Furthermore, by locking the lifting piece 3 of the cam 2 with another stopper 9 between the protrusion operating position of the cam 2 by the spring 4 and the resting position due to the locking of the stopper 8, If the projecting position is set to the first operating position, the second operating position is set, and as a result, the two-stage operation of the cam 2 collides with the high, low, and both butt knitting needles at the first operating position, but the second operating position collides with the knitting needles of the high, low, and both butts. In the operating position, a selection operation that engages only high-pat knitting needles can be performed, and the selection command is easily performed by selecting the two stoppers 8 and 9.

(Example) As an example of the present invention, a plurality of cams 2 are arranged in three stages, two cams are controlled in the first stage, three cams are controlled in the second stage, and one cam is controlled in the third stage, Furthermore, only stopper 8 is used for the cam in the center of the second stage,
The other cams are shown equipped with two stoppers 8 and 9.

1 indicates the main plate, and the elevating piece 3 of each cam 2 is the main plate 1.
A guide piece 13 fixedly attached to the base plate 1 is inserted and supported, and a spring 4 acts on the guide piece 13 to constantly urge the lifting piece 3 downward, and this urging causes the cam 2 to protrude from the base plate 1. This position was defined as the cam 2 operating position.

5 is supported on the upper surface of the guide piece 13 and is supported by the suppressing piece 1
A slider 4 is provided so as to be movable along the arrangement direction of the cams 2 while preventing its floating. A rack 5a is integrally fixed to this slider, and the driving gear 7a of the pulse motor 7 installed on the main plate 1 is moved to the slider 5a. The slider 5 is engaged with the motor 7 to move the slider 5 by a predetermined amount by a pulse signal to the motor 7.
A chevron-shaped cam surface 6 is formed on the cam surface 6, and a projecting ring 3c attached to the side surface of the elevating piece 3 protruding from the guide piece 13 is supported on the chevron-shaped cam surface 6. Therefore, as the slider 5 moves, the protruding ring 3c of the lifting piece 3 is moved up and down by the lower and higher parts of the chevron-shaped cam surface 6, and in cooperation with the spring 4, the lifting piece 3 is moved up and down. did.

In the guide piece 13, a stopper 8 which is engaged and disengaged by a solenoid 10 is provided on the side of the elevating piece 3, and a recess 3a that engages with the stopper 8 is provided on the side surface of the elevating piece 3.

In the above device, as shown in FIG. 2, the projecting ring 3c of the lifting piece 3 is located at the lower part of the slider 5,
Therefore, when the lifting piece 3 is moved downward by the spring 4 and the cam 2 protrudes from the base plate 1 and is in the operating state, when a command signal is given to the pulse motor 7, the slider 5 moves to the right in the drawing. When the high part of the chevron-shaped cam surface 6 faces the protruding ring 3c, the lifting piece 3 moves up to its maximum height, and then, when it descends according to the cam surface 6, it is released from the excitation of the solenoid 10 and moves up and down with spring pressure. A stopper 8 in contact with the side surface of the piece 3 protrudes into engagement with the recess 3a and locks the downward movement of the elevating piece 3. Therefore, the cam 2
is a position retreated from the protruding operating position, and this position is the rest position of the cam 2. From this state, if a signal is sent to the solenoid 10 and the stopper 8 is released, the lifting piece 3 will move downward due to spring pressure. The cam 2 is then switched to the protruding operating position.

In this way, the slider 5 by the pulse motor 7
The movement of the cam 2 and the detachment of the stopper 8 by the solenoid 10 cause the cam 2 to be switched between the operating and rest positions.

As mentioned above, in the illustrated embodiment, the switching control of each cam 2 is performed simultaneously for the cams 2 arranged in three stages. The length of the cam surface 6 corresponds to the number of cams, and the number of chevron-shaped cam surfaces 6 is formed corresponding to that number.As shown in FIG. In addition, the third stage slider 5, which is spaced apart, is connected to the first stage slider 5 by using a rotating piece 12' which is pivotally supported in the middle, so that the first stage slider 5 can be moved by the pulse motor 7. In conjunction, 2, 3
The sliders 5, 5 of each stage are moved by a predetermined amount at the same time, and the operation of the cam 2 at each stage and the switching operation of the pause are performed in the same manner as described above.

In the illustrated example, the cam 2 at the center of the second stage is used to simply switch between operation and rest, and the vertical movement position of the elevating piece 3' is switched by the single stopper 8 as described above. The other cams 2... are shown in which the protrusion operating position can be switched in two stages to correspond to the operation of knitting needles having a structure of high and low butts suitable for knitting various patterns.

For these cams 2..., two stoppers 8, 9 are provided for each lifting piece 3.

That is, the protruding position of the cam 2 in the lowered position of the elevating piece 3 due to the biasing of the spring 4 is assumed to be the first operating position, and the cam 2 is moved up and down between the first operating position and the rest position where it is stopped by the stopper 8. A stopper 9 that is controlled by a separate solenoid 11 that locks the downward movement of the piece 3 is provided, and the recess 3a that is locked by the stopper 8 is different in height from the recess 3b that the stopper 9 locks to the lifting piece. It was set at 3.

Thus, as described above, when the lifting piece 3 is moved upward by the chevron-shaped cam surface 5a and then moved downward by the spring pressure, the lifting piece 3 is locked by the stopper 9, and the cam 2 is caused to protrude by the spring 4. 1st of cam 2
It is possible to stop the solenoid 1 in a position retracted from the operating position, that is, in the second operating position, and from this state, the solenoid 1
When the cam 2 is released from the lock by the stopper 9 by issuing a signal to the slider 5, the cam 2 becomes the first operating position, and the slider 5
It is switched to the rest state by moving and locking with the stopper 8.

In addition, the above-mentioned 1-stage switching on the main plate 1 and the above-mentioned 2-stage switching
The number of cams used for stage switching can be increased or decreased as desired.

(Effects of the Invention) According to the present invention, switching control between operation and rest of the knitting cam is performed by a slider that moves using a pulse motor as a drive source and a stopper that is controlled by a solenoid. Since the drive source is a pulse motor fixed to the pulse motor, the slider can be moved by the desired amount in the desired direction at any time by setting the pulse signal to the pulse motor and the timing of its transmission. In response to changes in the knitting width, it is possible to automate the protrusion and retraction of the knitting cam so that it can always adapt to this, and since the movement of the slider does not utilize the reciprocating movement of the carriage, the slider can be made to protrude greatly from both sides of the carriage. There is no need to provide abutment members corresponding to the slider on both sides of the needle bed, which is unnecessary and complicated by various mechanical equipment, and therefore the positions of the abutment members on both sides can be adjusted according to changes in the knitting width. The knitting machine has the effect of simplifying the construction and operation of the knitting machine by completely eliminating the need for a device and its operating procedures.

[Brief explanation of drawings]

The drawings show an embodiment of the apparatus of the present invention, and FIG. 1 is a plan view, FIG. 2 is a cross-sectional view taken along the line -- in FIG. 1, and FIG. 3 is a cross-sectional view taken along the line -- in FIG. 1... Base plate, 2... Cam, 3... Lifting piece, 4...
...Spring, 5...Slider, 6...Chevron cam surface,
7...Pulse motor, 8, 9...Stopper, 1
0,11...Solenoid.

Claims (1)

[Scope of Claims] 1. A cam 2 is attached to a base plate 1 integrated with a knitting carriage.
A cam support device that moves an elevating piece 3 integrated with the cam up and down and applies a spring 4 in the downward movement direction, and sets the protruding position of the cam 2 due to the bias of the spring to the operating position, and a chevron-shaped cam 6 on the upper edge. The formed slider 5 is provided on the base plate 1, and the movement of the slider 6 causes the lifting piece 3 to move up and down on the chevron-shaped cam surface 6. The solenoid 10 has a lower movement intermediate position as a cam rest position, and the lower movement of the elevating piece 3 is stopped at this position.
A cam protrusion control device in a horizontal stockinette knitting machine consists of a cam protrusion control device using a stopper 8 controlled by a stopper 8, and a slider drive device in which a pulse motor 7 is installed in the knitting carriage to move the slider 5 left and right by a predetermined amount according to a pulse signal at any time. Control actuator. 2. Corresponding to the plurality of cams 2 arranged in multiple stages on the main plate 1, sliders 5 are provided with a length common to the number of cams in each stage, and the sliders in each stage are provided with a length corresponding to the number of cams in that stage. A chevron-shaped cam surface 6 is formed to correspond to the elevating piece 3 of the cam 2, so that when the slider 5 of any stage is moved by the pulse motor 7, the slider of each other stage is simultaneously moved by a predetermined amount. A cam protrusion/retraction control actuation device for a horizontal stockinette knitting machine according to claim 1.