JPH0734954Y2 - Knitting cam retracting device for knitting of horizontal knitting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a retracting and actuating device for a knitting cam in horizontal knitting.

(Prior Art) Japanese Patent Application Laid-Open No. 63-175145 is disclosed as a means for simultaneously projecting and retracting a plurality of knitting cam groups arranged on a main plate of a knitting carriage in a horizontal knitting machine.

(Problems to be solved by the invention) In the conventional means, a number of cam grooves corresponding to the number of protruding and retracting cams are formed on the peripheral edge of the drum, and a guide part integral with each protruding and retracting cam is engaged with the cam groove by a pin. By driving each drum with a step motor, the guide component and the cam are moved up and down in accordance with the cam groove so that the cam appears and disappears. In this type, the knitting cam is located around the rotating drum. It is suitable for the state, but it is not suitable for the state where the cam groups are scattered in multiple rows and multiple stages, and it is very troublesome to process and form a plurality of cam grooves that act as operation sources in relation to the peripheral surface of the drum. Therefore, the production cost increased, and it was difficult to deal with various kinds of knitting work contents.

(Means for Solving the Problems) In view of the above, the present invention is particularly directed to the cam retracting control when a plurality of knitting cams are positioned relatively close to each other and arranged in a multi-stage manner. A plurality of knitting cam groups provided so as to appear on and off the main plate are divided into a plurality of stages, and disc cams of the same number as the number of divisions are fixed to the rotary shaft with the peripheral surface cam phases as mutually related positions. In parallel with the rotation of the knitting cam group, the same number of ascending and descending pins linearly arranged along the section arrangement direction of the knitting cam group are moved up and down according to the circumferential cam phase of each disc cam. The elevator pins are directly or indirectly coupled to the knitting cams of the respective sections, and a spring is applied to the knitting cams of the respective sections in the direction of projecting the knitting cams from the main plate, and the rotary shaft is rotated by a predetermined number of steps. By a step motor driven by a command signal from Become.

(Operation) In the present invention, the rotary shaft (3) to which the same number of disc cams (2a) (2b) as the number of sections of the knitting cam divided into a plurality of stages are fixed is the motor (7) according to the number of steps. When rotated along with the rotation of, the two disc arms (2a, 2b) interlocking with each other in the preliminarily circumferential cam phase are interlocked with each other, for example, two arms ( 4a) (4b) are raised and lowered in accordance with the circumferential cam phase of the disc cams (2a) (2b), and the row of knitting cams connected to the raising and lowering pins are springs (5).
Of the knitting cam, which is retracted to the side of the main plate (1) against the operating pressure of and is connected to the descending lifting pin, projects from the main plate (1) by the operating pressure of the spring (5) and acts on the knitting needle. Therefore, the knitting cams in all rows are simultaneously moved in and out according to the circumferential cam phases of the disc cams (2a) (2b) ... Which are switched according to the rotation amount of the stepping motor (6) by the program.

(Embodiment) An embodiment of the present invention will be described with reference to the drawings.

In FIG. 4, among the cam groups arranged on the main plate (1), transfer mountains a other than those shaded, a pair of left and right raised mountains b and b ', a middle mountain for jack c and a lower mountain c'below it, Left and right pairs of raised mountains for jacks d and d'are knitting cams that appear in and out of the husband and wife.
"b '""middle mountain c for upper and lower jacks c" and "mountain c'for jack" and "jack raised mountain d" are divided into four stages, and the above-mentioned transfer mountain a
And the raised mountains for jacks d and d'in two steps, the raised mountains b and b'on the left and right, and the intermediate mountain c for jacks c '
It is assumed that it operates in three steps: out, middle, and sunken.

(2a), (2b), (2c), and (2d) are disk cams of the same number as the number of divisions of the above-mentioned cam group, and the peripheral surface cams of each disk cam (2a) to (bb) are as shown in FIG. These disc cams (2a)-
(2d) is a rotating shaft (3) rotatably installed on a bearing member (7) provided on the main plate (1) with the knitting cams arranged in the order of division and the phases of the peripheral cams being relative to each other. ), And the rotating shaft (3) was connected by a belt mechanism (8) so as to interlock with a step motor (6) driven by a command signal with a predetermined number of steps regulated by a knitting program.

(4a), (4b), (4c) and (4d) are the same number of lifting pins as the knitting cams, similar to the disc cams (2a) to (2d), and the disc cams (2a) to (2d) and Along the straight line in the same direction as the arrangement direction of the divided knitting cams, at a position related to the disc cam group, it is provided on the main plate (1) so as to be able to move up and down in accordance with the guide hole of the support member (9), and each lifting pin is individually sorted. Directly or indirectly through the connecting piece (10) with each formed knitting cam, and each retractable knitting cam is always biased by a spring (5) so as to project from the main plate (1), and each lifting pin (4a). ) To (4d), the projecting and retracting cams a, b, b ', c, c', d and d'are selectively moved in and out by rotating the disc cams (2a) to (2d). I did it.

That is, four sets of disc cams (2a) to (2d) and lifting pins (4
a) and (4d) are connected to each other by a rotating piece (11) supported by a shaft (12) and interposed between the disc cam and the lifting pin. It consists of a bifurcated shape having two arms (11a) and (11b), and the tip cam follower (11c) of one arm (11a) is brought into contact with the circumferential surface cam of each disc cam, and the other arm (11b). ) Was engaged with the protrusions (13) of each lifting pin.

As a result of the rotation of each disc cam, the elevating pieces are moved up and down by the rotation cams (11) by the peripheral cam shape of the disc cams, respectively. For example, the cam follower (11
When c) faces the symbol number 1, the transfer mountain a is immersed, the raised mountains b and b ′ are immersed, the middle mountain c and the obtained mountain c ′ are projected, and the raised mountains d and d ′ are also projected. By setting the operating position of the disc cam, which is shown by a symbol and numeral in contact with each cam follower (11c), according to the command signal amount to the step motor (6) by the program, it is possible to perform the emergence control of the used knitting cam at the same time. .

(Effects of the Invention) According to the present invention, the plurality of protrusions / retractions arranged on the main plate are divided into a plurality of stages, and the elevating pins are arranged in a row along the row of the protrusion / retraction cams and fixed to one shaft. It is possible to use the space above the ground plane advantageously because the disc cams are raised and lowered by the integrated rotation of the disc cams and the emergence cams of each row are simultaneously controlled in relation to each other.
It is easy to machine the disc cams, which are acting parts, one by one in the peripheral surface cam shape, and it is only necessary to fix the plurality of cams adjacently on one axis, so the machining and assembly is extremely simple. Various control contents can be dealt with, and the control switching can be performed appropriately.

[Brief description of drawings]

1 is a plan view, FIG. 2 is a side view in which a part is removed, and FIG.
FIG. 4 is a side view showing an example of a disc cam, and FIG. 4 is a plan view illustrating the arrangement mode of the retractable cams. (1) ... Ground plate (2a) to (2d) ... Disc cam (3) ... Rotating shaft (4a) to (4d) ... Lifting pin (5) ... Spring (6) ... Step motor

Claims (1)

[Scope of utility model registration request] 1. A plurality of knitting cam groups provided on a base plate (1) of a carriage for knitting so as to project and retract are divided into a plurality of stages, and the same number of disc cams (2a) (2b) ... The surface cam phases are fixed to the rotation shaft (3) with respect to each other, and linearly along the section arrangement direction of the knitting cam group in conjunction with the rotation of the disc cams (2a) (2b). Elevating pins (4a) (4b), which are the same in number as the sections, are provided so as to move up and down according to the circumferential cam phase of each disc cam (2a) (2b). ) (4b) ... Is directly or indirectly coupled to the knitting cams of the respective sections, and the knitting cams of the respective sections are actuated by a spring (5) in a direction of projecting the knitting cams from the main plate (1) to cause the rotation. A knitting cam for a horizontal knitting machine formed by rotating a shaft (3) with a step motor (6) that drives a command signal according to a predetermined number of steps. Actuating device.