JPH0141739B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a knitted fabric pulling-down device for pulling down a knitted fabric knitted in a flat knitting machine from a knitting site.

〓Prior art〓 In flat knitting machines, the knitted fabric hangs down from the needle bed gap and is rolled up below the needle bed gap, but since there is a distance between the knitting area and the winding area, The knitted fabric may become loose, or in the case of formed knitting, the pull-down conditions differ depending on the area where the knitting width is large and the area where it is small, which may impair the uniformity of the stitches. For this purpose, a roller for pulling down the knitted fabric,
This was done by placing the knitting part directly under the needle opening at the tip of the needle bed facing the front and rear chevrons, and bringing the knitting part and the part that nip the knitted fabric closer to each other. In order to nip and pull down the knitted fabric at the same time, in the area where the carriage moves and knits a new stitch to create a new course, the nip position of the fabric and the number of stitches between the knitting needles are different from those reached by the carriage. The number of new courses is now greater than the number of stitches in the part where the new course will not be organized. As a result, some parts were strongly subjected to the pull-down force of the knitted fabric pull-down roll and others were weakly received.

〓Problems to be Solved by the Invention〓 When a pull-down roller is provided close to the gap of the knitting machine in order to pull down the knitted fabric immediately after knitting, the new course knitted part and the last knitted part are separated. The pull-down conditions that the knitted fabric is subjected to differ depending on the part.

Therefore, prior to pulling down the knitted fabric over the entire width, only the knitted fabric in the new course portion immediately after being knitted with a carriage is pulled down, thereby obtaining a knitted fabric with uniform pulling of the knitted fabric during knitting. It is an object.

〓Means for solving the problem〓 The knitted fabric is pulled down by a pull-down roller located below the needle bed gap part over its entire width, and the knitted fabric is pulled down by a pull-down roller immediately below the needle bed gap part. A separate pull-down roller pair including a plurality of pressing rollers rotates the roller pair in synchronization with the movement of the carriage, so as to nip and pull down only the knitted fabric that has just been knitted with the movement of the carriage. .

〓Example〓 A specific example of an apparatus for carrying out the method of the present invention will be described below.

Reference numeral 1, 1 indicates a needle bed which is provided in a chevron shape with its tips facing each other, and is passed under the needle bed gap 2 in the longitudinal direction of the knitting machine stand, and a winding main drum 3 is supported by a shaft 4.
An auxiliary drum 5 is pressed against the winding main drum 4,
Nip and wind up the knitted fabric 6 (not shown)
send to

A shaft 9 is attached to the frame 7 with a support arm 8 directly below the tooth opening 2.
, and a roller 10 is supported on the shaft 9. Pulleys (not shown) are provided on the shaft 4 of the winding main drum 3 and the shaft 9 of the roller 10, respectively, and the belt 11 is stretched therebetween. 12 is a tension pulley.

A pressure roller 13 is supported by a swing arm 14 opposite to the roller 10. The swinging arm 14 is attached to the frame 7
A bolt 16 is loosely fitted to the lower end of the shaft 15, and a hanging arm 18 of an L-shaped arm 17 is loosely fitted to the bolt 16. The end of the bolt 16 is screwed into a double nut 19, and a spring 20 is inserted between the double nut 19 of the bolt 16 and the hanging arm 18. A cam roller 22 is pivotally supported on the upper arm 21 of the L-shaped arm 17, and comes into contact with a cam 24 that is pivotally supported by a cam 23. The above cam 24, L-shaped arm 17, bolt 1
The swinging arm swinging member 25 is constituted by 6 or the like.

A plurality of units of the pressing roller 13, the swinging arm 14, and the swinging arm swinging member 25 are provided over the entire width of the knitting machine, and the preferred number in this embodiment is 19 units.

The camshaft 23 receives power from a drive source (not shown) via a drive shaft 30 and a power transmission member 31 such as a bevel gear. At the same time, power is transmitted from the drive shaft 30 via a chain wheel 32 and a chain 33 to a chain wheel 36 that supports a chain 35 that supports a carriage support member 34. Therefore, the reciprocating movement of the carriage and the rotation of the camshaft 23 are synchronized, and the swinging arm swinging member 25 of the swinging arm 14, which has the pressure roller 13 located at a position facing the moving carriage, It is positioned so that it swings in conjunction with the movement of the carriage.

Assume that the carriage is now located at the end of the knitting machine table and has started moving. Since the carriage is located at the end of the knitting machine table, the camshaft 2
The peak of the cam 24a located at the end of the L-shaped arm 17
The L-shaped arm 17 contacts the cam roller 22 of FIG. 1, turns to the left in FIG. 1, pushes the spring 20, pushes the bolt 16 to the right in FIG. The roller 10 of the pressure roller 13 is pressed against the roller 10 of the pressure roller 13. The roller 10 is connected to the shaft 9
Since the pressure roller 1 is constantly rotating due to the rotation of
The knitted fabric 6 nipped by the rollers 3 and 10 is pulled down. In synchronization with the transmission of power from the drive shaft 30, the chain 35 rotates and moves the carriage, and in synchronization with the transmission of power from the drive shaft 30, the camshaft 23 rotates, and the peak of the cam 24a is connected to the cam roller. 22 and the spring 20, the swinging arm 14 swings clockwise, and the pressing roller 13 releases the nip of the knitted fabric 6 between it and the roller 10. At the same time, the peak of the cam 24b comes into contact with the cam roller 22 of the corresponding swing arm swinging member 25, and the adjacent pressing roller 13 comes into contact with the roller 10.
In this way, only the pressing roller 13 at a position facing the carriage (not shown) will nip the knitted fabric 6.

The nipped knitted fabric is newly knitted by one course with the transfer of the carriage, and the knitted fabric length from the roller 10 to the upper part has just become longer.
It is pulled down by the nip of 3.

Note that the pressure roller 13 and the swinging arm swinging member 25
If 19 sets of cams 24 are used, 10 types of cams 24 are sufficient.

A cam is used as the swinging arm swinging member, and the camshaft that supports the cam is installed within the frame of the needle bed, so it is not obvious from the outside that a special device has been added, and the space of the device has been expanded. There's nothing to do. In addition, since the swinging arm swings based on the movement of the cam of the camshaft, and the camshaft is directly connected to the drive shaft of the carriage, the movement of the carriage and the movement of the swinging arm are different. Complete synchronization is possible, and the knitted fabric can be reliably nipped immediately after knitting.

〓Effect of the invention〓 According to the method of the present invention, only the newly knitted fabric portion that the carriage passes through is nipped and pulled down by the drive roller and the pressing roller, and even the entire width of the knitted fabric is wound up. Since the main drum is used to pull down the newly knitted fabric, the newly knitted fabric at the gap is completely pulled down, and the knitted fabric at the end of the knitted area is not pulled down, so there may be slack or imperfections there. No necessary tension is generated, and knitted fabrics that tend to curl to one side, such as plain knitting, ribbed knitting, and even formed knitting, can be pulled down effectively.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an apparatus for carrying out the method of the present invention;
FIG. 2 is an explanatory view showing the arrangement of the rollers supported by the swinging arm and the drive roller, and FIG. 3 is a perspective view showing the drive system. DESCRIPTION OF SYMBOLS 1... Needle bed, 2... Needle gap part, 3... Main pull-down drum, 10... Drive roller, 13... Press roller.

Claims (1)

[Claims] 1 A knitted fabric pull-down main drum provided across the entire width of the needle bed below the needle bed edge at the tip of the needle bed facing the chevron shape simultaneously pulls down the knitted fabric across its entire width, and simultaneously pulls down the knitted fabric. A knitted fabric consisting of a drive roller for pulling down the knitted fabric, which is located above the main pull-down drum, and is provided directly below the needle bed edge in parallel with the tip edge of the needle bed, and a plurality of pressing rollers are provided opposite to the drive roller. A knitted fabric pulling-down method characterized in that the pressing roller of the pulling-down roller is brought close to the drive roll when the carriage is opposed to the pressing roll during carriage transfer, and nip and pull down the knitted fabric immediately after knitting. .