JPS6217512Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a card feeding device for a hand knitting machine in which a card indicating a knitting type or a needle selection device, etc. is loaded onto a drum and is sent in conjunction with the movement of a carriage.
The purpose is to have a simple configuration and to be able to send cards reliably.

The illustrated embodiment will be described below.

1 is the shaft of a drum (not shown) installed horizontally behind the needle bed, and a ratchet gear 2 is located at the right end.
and a knob 3 are fitted, and these are arranged between the rear wall 4 and the partition wall 5 of the needle bed main body.

Numeral 6 is a spring for preventing blind movement and is engaged with a gear 7 integrally formed on the left side of the knob 2.

Reference numeral 8 denotes a bottom wall provided between the rear wall 4 and the partition wall 5, and a support shaft 9 with a circular cross section is screwed perpendicularly to the bottom surface of the bottom wall.
A feed pawl body 10 made of synthetic resin is pivotally supported.

The feed claw body 10 has a bearing hole 12 in the left side portion of an arm 11 which is horizontally long rectangular in plane and has an inverted U-shape in vertical section.
, and an engagement plate 13 is integrally formed on the right end.

The bearing hole 12 has opposing left and right end surfaces 12a,
12b is an arcuate surface, and the front and rear wall surfaces 12c and 12d are vertical surfaces, and by bringing these surfaces 12a to 12d into contact with the support shaft 9, the feed claw body 10 can be rotated horizontally and vertically. It is pivotally supported so that it can swing freely.

The engagement plate 13 extends horizontally from the right end of the arm 11 toward the upper front side. It has a substantially vertically elongated rectangular shape in plan, with a semicircular passive portion 13a formed on the front side, an engaging pawl 13b that engages with the ratchet gear 2 at the center of the upper surface, and a regulating portion inclined rearwardly downward at the rear edge. 13c.

The feed pawl body 10 has a substantially left half of the arm 11 in contact with the lower surface of the bottom wall 8, an engagement plate 13 facing the ratchet gear 2, and a spring stopper 14 formed on the upper surface of the right side of the arm 11. By pulling the passive part 13a diagonally upward to the front side by a tension spring 15 stretched between the partition wall 5 and the partition wall 5, the passive part 13a is made to protrude forward from the lower side of the partition wall 5, and the engaging pawl 13b is attached to the ratchet gear 2. It is held at a standby position (FIG. 2) in which it is closely opposed to the teeth 2a on the lower circumference.

Reference numeral 16 denotes a guide member, which is connected to the regulating portion 13c of the rear wall 4.
It is located opposite to the main building and slopes diagonally downward.

Now, in connection with the movement of the carriage (not shown), the starting protrusion 17 provided on the rear side of the carriage engages with the passive part 13a of the feed pawl body 10 in the standby position and moves backward. When pushed, the feed pawl body 10 moves horizontally backward against the bias of the tension spring 15, whereby the feed pawl 13b engages with the teeth 2a of the ratchet gear 2 and moves the ratchet gear 2 by one tooth. Rotate in the direction of arrow 18 (second,
Figure 3). Cards (not shown) loaded onto the drum are thus fed in a predetermined direction.

Note that when the feed pawl 13b engages with the teeth 2a and attempts to rotate the ratchet gear 2,
When the engagement becomes misaligned and the feed claw body 10 swings diagonally downward against the bias of the tension spring 15,
The above-mentioned misalignment is eliminated by the regulating portion 13c coming into contact with the guide member 16 and being pushed upward.
The feed pawl body 10 horizontally rotates appropriately, and the ratchet gear 2 rotates by a predetermined amount.

Thus, when the ratchet gear 2 rotates by one tooth and the starting protrusion 17 separates from the driven part 13a, the feed pawl body 10 is urged to horizontally rotate forward by the tension spring 15, but the feed pawl 13b
contacts the tooth 2b immediately in front of the tooth 2a and is pushed down, thereby once swinging diagonally downward against the bias of the tension spring 15 (dashed line in Figure 4), and the above contact is released and the tooth is in a horizontal state. After returning to the position (solid line in the figure), it rotates forward and returns to the standby position.

As is clear from the above description, according to the present invention, the feed pawl body is rotatably supported in the horizontal direction and swingably in the vertical direction, so that the feed pawl body can be rotated in the horizontal direction. After engaging the ratchet gear and rotating it by a predetermined amount, the machine can be pivoted vertically to disengage from the ratchet gear. Compared to a feed device in which the feed pawl is rotatably supported on a supporting body, and the relative position with respect to the ratchet gear is adjusted by urging each other with a plurality of springs, the structure is simpler and there are fewer parts. Not only is it easy to manufacture and can be provided at low cost, but also the ratchet gear and feed pawl can be easily adjusted, resulting in fewer malfunctions and easy handling.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is an exploded perspective view, Fig. 2 is a side view showing the feed claw body in the standby position, and Fig. 3 shows the ratchet gear in rotation. The side view and FIG. 4 are partially cutaway front views. 1...Shaft, 2...Ratchet gear, 1
0...Feeding claw body.

Claims (1)

[Scope of utility model registration request] A feed pawl body is placed at a predetermined position opposite to a ratchet gear fitted to the shaft of a drum in which a card is loaded, and is rotatable in the horizontal direction so as to be engaged with the ratchet gear and rotated by a predetermined amount, and the engagement is released. A card feeding device for a hand knitting machine, which is sometimes supported on a shaft so as to be swingable in the vertical direction.