JPS632446Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a reversing device for a Jia card.

When weaving using jacquard, weft thread breakage may occur during weaving. At this time, unless the jiaquard pattern is returned to the pattern immediately before the weft was cut, the pattern of the woven fabric will not be continuous. To do this, it is necessary to reverse the cylinder that feeds the pattern paper. However, in a cylinder-elevating Jia card, when the cylinder is in the raised position, the auxiliary warp needle is inserted into the hole in the pattern paper, so if the cylinder is reversed when the cylinder is raised, the pattern paper will be damaged. For this reason, the device of the present invention is designed so that even if the cylinder is reversed by mistake while being raised, a stopper is activated to prevent the cylinder from being reversed.

Embodiments of the present invention will be described below with reference to the drawings.

Reference numeral 1 denotes a shaft to which power is transmitted through a gear train from a camshaft (not shown) and rotates, and a drive lever 2
is supported. 3 is a set wheel, which has two discs 5, 5 supported by a wheel shaft 4.
In between, set pins 6 are provided at equal intervals on the circumference in parallel with the wheel shaft 4, and as the wheel shaft 4 rotates, the cylinder 7 rotates. 8 is a pattern paper sent by cylinder 7. A hammer roller 9 is pivotally supported at the tip of the arm 10, is pressed against the set pin 6 of the set wheel 3 by a spring 11, and is pressed against the set pin 6 of the set wheel 3.
prevents it from rotating accidentally.

When weaving is carried out, the rotation of the shaft 1 in the direction of arrow A causes the drive lever 2 to rotate counterclockwise and engage with the set pin 6 of the set wheel 3, moving the set wheel 3 in the opposite direction of arrow B. It rotates intermittently in the direction.

When a problem such as weft breakage occurs during weaving, it is necessary to reversely rotate the set wheel 3, and the mechanism for this purpose is as follows.

20 is an action lever, and a safety stopper 23 is fixed by a bolt 22 inserted into a long hole 21 at the tip. By moving the bolt 22 within the elongated hole 21, the safety stopper 23
The length of the action lever 20 can be adjusted by moving it left and right in FIG. A long hole 24 is also provided in the safety stopper 23.
A pawl lever 26 is supported by a bolt 25 whose head is located inside. The pawl lever 26 has a pin 27 in its center, and the action lever 20
A spring 31 is bridged between a support shaft 29 for supporting the frame 28 and an integral pin 30,
The pawl lever 26 is always biased to rotate counterclockwise around the bolt 25. In addition, the pawl lever 2 at the tip of the action lever 20
A pin 31 integrated with a bolt 25 for supporting 6
A spring 33 is placed between the pin 32 and the pin 32 provided on the frame 28, and biases the action lever 20 to rotate in a clockwise direction.

35 is a safety lever, and shaft 3 is attached to the frame 28.
The safety stopper 23 is swingably supported by the safety stopper 23 so that its tip bent portion 37 can enter into the swinging locus of the safety stopper 23 when the safety stopper 23 is turned counterclockwise. A safety connecting lever 38 is pivotally supported on the safety lever 35. When the cylinder 7 is raised, the safety connecting lever 38 is raised and rotates the safety lever 35 in a counterclockwise direction.

Suppose now that it becomes necessary to reverse the pattern paper 8 for some reason. If the cylinder 7 is not raised at that time, the safety connecting lever 38 is lowered in the direction of arrow C, so the safety lever 35 is turned clockwise as shown by the chain line, and the tip bent portion 37 is out of the trajectory of the safety stopper 23 at the tip of the action lever 20. To do this, pull the string 39 and turn the action lever 20 counterclockwise.
Safety stopper of action lever 20 23
does not come into contact with the safety lever, and the pawl lever 26
, the top of which pushes up the set pin 6, rotates the set wheel 3 in the direction of arrow B, and reverses the pattern paper 8.

If the cylinder 7 is raised in the opposite way to the above, the needle (not shown) will be inserted into the pattern paper 8 and the cylinder 7, so if the cylinder 7 is rotated, the pattern paper etc. will be damaged. A situation arises. When the cylinder 7 is raised, the safety connecting lever 38 moves in the direction of arrow C.
Since it is rising in the opposite direction, safety lever 3
5 turns counterclockwise and pulls the string 39 to project the tip bent portion 37 into the rotation locus of the safety stopper 23, the action lever 20 cannot turn, and therefore the pawl lever 26 cannot rise either. First, the set wheel 3 cannot be rotated.

As mentioned above, the device of the present invention has a set wheel with set pins installed at equal intervals on the circumference as a member for transmitting rotational motion to the cylinder, a pawl lever is supported pivotably at the tip, and the set wheel itself is pivoted to the frame. In the Jaccard card reversing device, which rotates the pawl lever tip against the set pin and reversely rotates the set wheel by swinging the supported action lever, the safety connecting lever, which moves up and down in accordance with the up and down movement of the cylinder, is activated. The safety lever is pivotally supported on a frame so that its tip can protrude within the swing locus of the end of the action lever, and when the cylinder rises, the safety connecting lever is raised, and the tip of the safety lever is attached to the end of the action lever. By protruding into the swinging path of the safety stopper, the action lever is prevented from swinging in the direction of raising the pawl lever, so it is possible to accidentally pull down the action lever when the cylinder is in the raised position. Even in this case, the action lever cannot be pulled down and the pattern paper will not be damaged, and the pattern paper can only be reversed when the cylinder is in the lowered position.

[Brief explanation of drawings]

FIG. 1 is a schematic side view, and FIG. 2 is a plan view with the tip of the action lever partially cut away. 3...Set wheel, 6...Set pin, 7
...Cylinder, 20...Action lever, 2
3... Safety stopper, 26... Paul lever, 28... Frame, 35... Safety lever, 38... Safety connecting lever.

Claims (1)

[Scope of utility model registration request] It has a set wheel with set pins planted at equal intervals on the circumference as a member for transmitting rotational motion to the cylinder.The pawl lever is supported at the tip of the set wheel, and the set wheel itself is used as the oscillation of the action lever that is supported on the frame. In the Jacquard card reversing device, in which the tip of the pawl lever contacts the set pin and rotates the set wheel in the reverse direction, the safety connecting lever moves up and down in accordance with the up and down movement of the cylinder.
It is pivoted to a safety lever that is pivotally supported on the frame so that its tip can protrude within the swing locus of the end of the action lever, and when the cylinder rises, the safety connecting lever is raised, and the tip of the safety lever is attached to the end of the action lever. A jacquard card reversing device characterized in that the action lever is prevented from swinging in the direction of raising the pawl lever by protruding into the swing locus of the safety stopper.