JPS623007Y2 - - Google Patents

Description

[Detailed description of the invention] The holder of the knotting device in the conventional tying machine has a concave conical part that is integral with the shaft bearing part, and the lower part of the conical part is notched, and the conical surface of the convex conical part that is integral with the holder shaft is fitted with a notch. However, as shown in FIG. 9, the notch edge of the concave conical portion extends toward the axis on the peripheral surface of the convex conical portion below the string removal groove. Since the holder was tilted so that it gradually overlapped widely, the axial center side of the holder held the string for a long time, and when the string was pulled out, the string was squeezed and a lot of string waste was generated, which was scattered between the conical surfaces of the holder. This had the disadvantage that the string could become clogged, resulting in a decrease in the string clamping force and the possibility of tying errors.

The present invention is aimed at improving the above-mentioned drawbacks, and consists of a knotter that consists of a holder that holds the string supplied by the needle and a knotter bill that holds and winds the string that is wound around the collecting culm. A concave conical part is provided protrudingly on the bearing part of the holder, a convex conical part that fits into the concave conical part is attached to the holder shaft inserted into the bearing part, a lower part of the concave conical part is cut out, In a tying machine in which a radial string removal groove is bored in the conical surface of the convex conical part, the notch edge of the concave conical part on the side that covers the string removal groove is the side edge of the string removal groove on the side in the holder rotation direction. It is characterized by approximately matching the .

The embodiment shown in the drawings will be explained below.1
is a knotter head that supports the holder shaft 2 of holder A and the shaft 3 of building B. The holder shaft 2 is rotatably supported via a collar 4, and a bevel gear 5 is connected to a nut 6 at the end on the bevel cam side.
The concave conical part 8 at the outer end of the bearing part 7 of the holder shaft 2 has a cutout at the bottom as shown in FIGS. Since the convex conical part 12 pressed by the convex conical part 11 is slidably spline-fitted, the conical surface of the convex conical part 12 is fitted into the conical part of the concave conical part 8.

Furthermore, a radial string removal groove 13 is bored in the conical surface of the convex conical portion 12.

The notch edge 8a of the concave conical portion 8 on the lower side in the rotational direction of the bill shaft 2 forms a radial direction, is parallel to the string removal groove 13, and is connected to the groove edge 13a on the front side in the rotational direction of the string removal groove 13. Just before the holder shaft 2 rotates once and stops, they almost coincide, and when they stop, there is a gap with a width that is approximately equal to the thickness of the string.

Next, to explain the operation, the string 15 pulled out from the string ball and passed through the hole of the needle 14 is wound around the grain culm to be bundled, passed through the first protrusion 16, and is held in the holder A, and the one-turn clutch is When you enter,
The needle 14 wraps the string 15 around the bundled grain culm as shown in FIG. After being hung on one protrusion 16, it is placed in the focusing chamber.

During this time, the holder shaft 2 and the shaft 3 of Bill B rotate, and as shown in Fig. 7, Bill B rotates while holding the string that was held from the previous step and the string on the lower side in the figure to form a knot. The holder A cuts the string 15 with the knife 18, and the string 15' for the next stroke connected to the needle 14 is held between the conical clamping surfaces of the holder A by the string guide groove 19 of the convex conical part 12, and When the string 15 from the stroke is released by the release arm, it is removed from the holder A at the same time as the knot is removed from the building B.

At that time, the notch edge 8a of the concave conical part 8 and the string removal groove 1
Since the groove edge 13a at the front in the rotational direction of the string 15 coincides with the groove edge 13a, when the string is removed, the gap between the notch edge 8a and the groove edge 13a is approximately equal to the thickness of the string from the outer circumferential side to the axis side, and the string 15 is No matter where in the holder A it is held, it can be pulled out without difficulty, and the string 15
will come off too quickly and Bill B will not make a mistake in grabbing the string.

The anti-wrapping collar 20 shown in FIG. 2 has a cutout at the lower end of the bearing 7 as shown by the dotted line in FIG. It is cut in a series and inserted so as to rotate together with the holder shaft 2, and even if string waste should get between the conical surfaces, it will be scraped out by the notched edge 21 and dropped.

In the present invention, as described above, a knot part is formed by a holder that holds the string supplied by the needle and a knotter bill that holds and winds the string wound around the collecting culm, and a concave conical part is provided protruding from the bearing part of the holder. , a convex conical part that fits into the concave conical part is attached to the holder shaft fitted into the bearing part, a lower part of the concave conical part is cut out, and a radial string is attached to the conical surface of the convex conical part. In the tying machine having a thread removal groove, the notch edge of the concave conical portion on the side that covers the string removal groove is substantially aligned with the side edge of the string removal groove on the holder rotation direction side;
Even if the string holding position shifts toward the outer periphery or toward the axis, Bill will not make a mistake in grabbing the string due to the timing of the string coming out too early, and the string holding can be reliably released at a predetermined timing. Even if the string is held close to the axis of the holder, the string will not be pulled off and generate string waste, which will get stuck in the holder and cause mistakes when holding the string, unlike in conventional cases.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
Figure 1 is a plan view of the nodule, Figure 2 is a sectional view of the main part, Figure 3 is a view taken along the X arrow in Figure 8, Figure 4 is a front view of the concave conical part, and Figure 5 is the convex part. A plan view of the conical portion, FIGS. 6, 7, and 8 are operational views showing the knotting process, and FIG. 9 is a side view of a conventional example. 1...Knotter head, 2...Holder shaft, 8
...Concave conical part, 8a... Notch edge, 12... Convex conical part, 13... Strap removal groove, 13a... Groove edge.

Claims (1)

[Scope of utility model registration request] A knotter is formed by a holder that holds the string supplied by the needle and a notterbil that holds and winds the string wound around the focusing culm. A convex conical part that fits into the concave conical part is attached to the holder shaft, a lower part of the concave conical part is notched, and a radial string removal groove is bored in the conical surface of the convex conical part. 1. A knotting device for a tying machine, characterized in that a notch edge of the concave conical portion on the side that covers the string removal groove is substantially aligned with a side edge of the string removal groove on the holder rotation direction side.