JP2579942B2 - Drawing equipment - Google Patents

Description

The present invention relates to a mechanism for simultaneously passing a warp through a heddle and a dropper using an air jet.

(B) Prior art As a yarn preparation process of the woven fabric operation, there is an operation of passing a warp through eyes of a heddle and a dropper. The operation of passing a warp through the eyes of a heddle and the operation of passing a warp through the eyes of a dropper are a series of operations.
As shown in No. 0067, they were performed by separate devices.

However, if the thread is passed through the eyes of the heald and the thread of the dropper separately, there is a problem that the working efficiency is extremely poor.

(C) Problems to be Solved by the Invention The problem to be solved by the present invention is to use an air jet so that a single device can draw a warp into the eyes of a heddle and the eyes of a dropper at a time. An object of the present invention is to make it possible to improve the work efficiency and to make the apparatus simpler and smaller.

(D) Means for Solving the Problems The present invention arranges a plurality of healds and droppers in parallel such that the healds and the droppers are arranged on a straight line where the eyes of the healds and the dropper overlap, and uses jet air to perform the In a drawing device for passing a warp thread through the heddle and the eyes of the dropper at the same time, a plurality of heads each having a substantially elliptical planar shape are rotatable about the center of the ellipse and the rotation axis is the arrangement of the eyes of the heald or the dropper. The heald or the dropper is arranged at a predetermined interval along the arrangement direction of the heald and the dropper so that the heald or the dropper can be arranged between adjacent heads. The head is divided into two parts along the axis, and the two parts are attached to a rotating shaft that rotates about the rotation axis so as to be spaced apart from and approachable to each other. A notch forming a passage extending through the periphery of the head along the major axis of the head, and rotating the head at a position where the major axis is along the arrangement direction of the head, thereby forming the periphery of the head. The heald and the dropper from the head by rotating the head so that the short axis is aligned with the arrangement direction of the head. At the upstream end of the row of heads, there is arranged a nozzle for jetting jet air together with the warp into the passage of the head.

(E) Operation In the above configuration, the heald and the dropper are inserted between the adjacent heads of the heads arranged in series, and the eyes of the heald and the dropper are matched with the passage of the head. Thereafter, when air is blown from the nozzle into the passage, the warp is sucked by the air jet and sent into the passage, and the warp passes through the eyes of the heald and the dropper.

(F) Example Hereinafter, an example of the present invention will be described with reference to the drawings.

FIGS. 1 and 2 show a mechanism 1 of a drawing apparatus according to the present embodiment. This mechanism 1 is a fixed table
An elongated movable base 12 movably provided on a pair of guide rails 11 provided on 10, and a plurality of warp threading units (12 in this embodiment) arranged in series on the movable base 12. Heads 2 (2a to 2e), a main nozzle 4 provided at one end (right end in FIG. 2) of the row of the heads 2 so as to be aligned with the heads, and a central nozzle 4 arranged at the center of the row of the heads 2 Auxiliary nozzle 4a
And

3 to 6, a head 2 has a rotating shaft 21 rotatably mounted on an upper portion of a support 20 fixed to the movable base 12, and a pin 23 at one end (the right end in FIG. 3) of the rotating shaft 21. , 2
A pair of blocks 22 and 2 rotatably mounted by 3a
2a, and a gear 24 for a timing belt attached to the other end of the rotating shaft. The blocks 22, 22a have a shape obtained by bisecting a long cylinder (a cylinder having a slightly elliptical cross section) along a short axis. Each of the blocks 22 and 22a has the same shape, and a groove 25 for receiving one end of the rotating shaft is formed at the rear portion. A notch 26 is formed at the front of the blocks 22, 22a along a plane crossing the axis. This notch 26 is a line 28 perpendicular to the plane 27 as shown in FIG.
Is formed along. The notch 26 is larger than half the cross-sectional area of the block, and forms a passage for air and warp as described later. Block
Guide grooves shallow on the outer circumference of 22,22a in accordance with the position of notch 26
29 are formed. As shown in FIG. 6, the width of the groove is reduced at the center of the arc-shaped outer periphery so as to receive and guide and position the heald or dropper.

A blind hole 30 is formed in a plane 27 of the blocks 22, 22a, and a spring 31 is provided in the blind hole 30. The spring 31 presses the pair of blocks 22 and 22a away from each other, so that the tip (left end in FIG. 3) of the block is separated.

The support 20 has leaf springs 35 and 3 above and below the blocks 22 and 22a.
5a is mounted, and each leaf spring is mounted with shoes 36 and 36a, respectively, which engage the substantially semicircular outer peripheral surfaces of the blocks 22 and 22a. Each shoe 36 and 36a has a curved surface 37 and 37a, respectively, which engages with the outer peripheral surface of the corresponding block. The shape of these curved surfaces 37, 37a is such that when the blocks 22 and 22a are arranged vertically, as shown in FIG. 8 (A), the ends of the blocks are separated from each other and the rotating shaft 21 rotates 90 °. When the blocks are arranged side by side, as shown in FIG.
27 are determined to stick to each other.

A timing belt driven by a separate motor (not shown) is attached to the timing pulley 24 of each head 2.
39 is hung so that the rotation shafts can be individually turned 90 ° by the operation of the timing belt.

When the heads 2 and 22a are arranged vertically, a heddle or dropper is inserted between adjacent heads as shown in FIG. 8 (A).
When the blocks 22 and 22a are rotated side by side, the heald a or the dropper b is pressed as shown in FIG. 8B.

The main and auxiliary nozzles have the same structure, and have an air jet outlet 41 connected to an air supply source, a yarn inlet 42, and an outlet 43 as shown in FIG. Air outlet from the air jet outlet 43
When the warp c is brought close to the yarn inlet 42 while the warp c is approached, the warp c is sucked from the yarn inlet 42 and the warp is blown out from the outlet 43 together with air. In the same manner, the auxiliary nozzle blows air from the air jet outlet 41 to reinforce that the flow of air becomes weaker on the way.

As shown in FIG. 1, the above mechanism 1 is arranged in a positional relationship shown in FIG. 1 with respect to a plurality of pairs of parallel guide rods 6 for holding and guiding the heald a in a vertical state and guide rods 7 for holding and guiding the dropper b. I have. A pair of upper and lower guide rods 6 are passed through upper and lower guide holes e of the heddle, and one of the adjacent heads 2g to 21 of the heads in which the lower and inner guide rods of each pair of guide rods 6 are arranged in series. It passes between two adjacent heads. The eye f of the heald a is aligned with the passage defined by the blocks 22 and 22a of the head 2.
On the other hand, one guide rod 7 for the dropper b is inserted into the guide hole g between any two adjacent heads between the heads 2a to 2f so that the eye h of the dropper b is aligned with the passage of the head. Being guided to hold the dropper.

A plurality of healds a and droppers b are guided and supported by the guide rods 6 and 7, and are disposed in large numbers on the right side of FIG. 1, and any one of a plurality of healds and droppers arranged in parallel is not shown. It is selected by the transfer device and as shown in FIG. 2, a corresponding heddle between heads 2k and 2l and a head 2
Dropper b is sent between a and 2b. At this time, the head blocks 22, 22a are vertically arranged.

Note that the heald a is twisted at its central part having an eye f by 20 ° to 30 ° as compared with the upper and lower parts as shown in FIGS. 9 and 10.

In the apparatus having the above structure, the heald a guided and held by the plurality of pairs of guide rods 6 and the plurality of guide rods 7 is provided.
And droppers b are selected one by one by the selective transfer device and sent between the corresponding heads. At this time, the head 2 is in a state where the blocks 22, 22a are vertically arranged as shown in FIG. 8A. Heddle a and dropper b
The timing belt of the head on both sides when it is sent
39 operates to rotate the rotating shaft 21 by 90 °, and the blocks 22, 22a
Are arranged side by side as shown in FIG. 8 (B).
Then, the heald and dropper block 22 and 2 on the heads on both sides.
Guided by the guide groove 29 of 2a and pushed and held by the block, the eyes f and h are aligned with the passage of the head.

Next, when the warp c approaches the yarn suction port 42 of the main nozzle 4 and blows air from the air jet outlet 41, the warp c flows from the outlet 43 together with the air into the passage of the head 2 and the warp c
Are sequentially passed through the eye h of the dropper b and the eye f of the heald.

After the warp is passed, the rotating shaft of the head is rotated 90 °,
As shown in FIG. 8 (A), the head blocks 22, 22a are separated vertically and the warp is taken out from the gap and moved to the left in FIG. 1 together with the heald and the dropper.

Thereafter, the warp is passed through the eyes of the heald and the dropper at the same time.

(G) Effects According to the present invention, the following effects can be obtained.

The heald and / or dropper can be clamped simply by rotating the head at a fixed position. Therefore, with a relatively simple structure, a large number of healds and / or droppers are arranged in a straight line, and the warp yarns are simultaneously fed to them. It is possible to pass.

The heald and the dropper can be easily positioned simply by rotating the heads arranged on both sides thereof.

Since the jet air of positive pressure is blown into the passage of the head on the upstream side together with the warp, even if a large number of healds and droppers are arranged in series, the warp can be reliably passed through them.

[Brief description of the drawings]

FIG. 1 is a diagram showing a positional relationship of a warp drawing-in mechanism of the present invention in a drawing apparatus, FIG. 2 is a side view of one embodiment of a warp drawing-in mechanism of the present invention, FIG.
4 is a view along line IV-IV of FIG. 3, FIG. 5 is a view along line VV of FIG. 3, FIG. 6 is a perspective view of the front of the block, FIG. 7 is a sectional view of the nozzle, FIG. 8 is a view showing the positioning operation of the heald or dropper by a block, FIG. 9 is a side view of the heald, and FIG. 10 is AA, BB and FIG. It is a figure which shows the cross section of the part of CC. 1: Warp threading mechanism 2: Head 21: Rotary shaft, 22, 22a: Block 4: Nozzle

Claims (1)

(57) [Claims] A plurality of healds and droppers are arranged in parallel so that the eyes of the heald and the dropper are arranged on a straight line where the eyes of the heald and the dropper overlap, and the warp yarns are simultaneously drawn into the eyes of the heald and the dropper using jet air. In a drawing device for passing, a plurality of heads each having a substantially elliptical planar shape are rotatable about a substantially center of the ellipse, and the rotation axis is substantially perpendicular to the arrangement direction of the healds or droppers.
The heald or the dropper is arranged at a predetermined interval along the arrangement direction of the heald and the dropper so that the heald or the dropper can be arranged between adjacent heads. The oblong head is divided into two parts along the short axis. The two parts are attached to the rotating shaft rotating about the rotation axis so as to be spaced apart from and approachable to each other. A notch forming a passage penetrating the head, and rotating the head at a position where the long axis is along the arrangement direction of the head, thereby clamping the heald and the dropper by the peripheral portion of the head and the heald and the dropper. The heald and the dropper from the head by rotating the head so that the short axis is along the arrangement direction of the head. At the upstream end of Drawing apparatus characterized by the air jets are arranged nozzles for spraying with warp was the de of the passageway.