JPH0237472Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention has a cutter that is particularly effectively used for binding compressed blocks of waste paper etc. with wire, and for tying both ends of the wire and then cutting it. This invention relates to an automatic wire twisting device.

(Prior Art) The inventor first proposed a support plate having a circular holding hole and a wire guide groove leading from the front end of the holding hole to the holding hole. Twisted plates are arranged oppositely, and the twisted plate is connected to an arc-shaped hook whose rotation orbit is placed at a position where the wire should be scooped up when rotating in forward and reverse directions, and an inner curved piece of the hook, which extends toward the eccentric point of the twisted plate. An extending wire clamping groove is provided such that its tip portion is located at a position corresponding to the holding hole and has a width to clamp a plurality of wires in series, and a wire feeding guide claw holds the tip portion of the groove in a position corresponding to the holding hole. The approximate center of the twist plate is known and it is supported so as to be able to swing outward, and the tip of the claw is located closer to the center than the tip of the groove of the wire clamping groove, and the outer curved side of the tip of the claw is located in the position of the tip of the wire guide groove. We have proposed an automatic wire twisting device that is installed opposite to the twist plate so that it is always fired at positions substantially along the groove walls in the direction of reverse rotation of the twist plate.

(Japanese Patent Publication No. 57-59137) However, although this device has a mechanism that can automatically twist multiple wires together, when the twist plate is rotated in the forward and reverse directions, the rotation trajectory is set at the position where the wires should be scooped up. The wire holding groove must be formed so as to be continuous with the arc-shaped hook and the inner curved piece of the hook and extend toward the eccentric point of the twist plate. The approximate center of the twist plate is known and it is supported so as to be able to swing outward, and the outer curved side of the twist plate is located closer to the center than the groove tip of the wire guide groove, and the outer curved side of the tip of the claw is located closer to the center than the groove tip of the wire guide groove. Since the twist plate of the guide groove must be configured so that it is located at a position approximately along the groove wall in the reverse rotation direction, constant bombardment must be applied.
The structure is still complex, requires skill to assemble, and has the drawbacks of high cost, and it is inconvenient that the twisted wires must be cut each time with scissors.

(Problems to be Solved by the Invention) The present invention further simplifies the configuration, simplifies assembly, and is capable of reliably twisting multiple wires together, as well as a cutter that can automatically cut the wires. The object of the present invention is to provide an automatic wire twisting device.

(Means for Solving the Problems) In order to achieve the above object, the present invention supports a rotatable twist ring on a support plate having a circular support hole at its tip in a concentric positional relationship with the support hole, and The support plate has a tapered wire guide groove leading from the front end of the support plate to the support hole, and the twist ring has a tapered wire guide groove that cuts into the center from the outer peripheral surface of the support plate and penetrates both end surfaces of the twist ring. A wire guide groove and a wire clamping groove continuous with the guide groove and having a width for clamping a plurality of wires in series are formed, an extrusion head is provided so as to be movable toward and away from the twist ring, and the extrusion head A pair of arms are provided protruding in a U-shape at the front part, and a wire receiving part for receiving and supporting a plurality of wires is provided at the tip of both arms, and when the extrusion head is advanced, both of the arms are The wire receiving portion is located on both sides of the twist ring to a position opposite to the wire holding groove, and the cutting edge of the cutter plate is disposed so as to be able to freely slide on the end face of the twist ring, and is placed on the support plate. The structure is such that a cutter plate is fixed with its cutting edge facing the cutting edge of the cutter plate, and a driving means is provided for reciprocating the slidable cutter plate.

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

(Example) In Figs. 1, 2, and 3, a pair of rectangular twist wheel support plates 1 and 1' are spaced apart from each other by a frame-shaped stay plate 2 at their periphery. Connected in parallel with bolts 3..., this pair of support plate connected bodies are placed on the lower surface of the horizontal base plate F, with one side of the pair of support plates 1, 1' in front of the base plate F (first, Bolt 4 with it protruding to the right (Figure 2)
This pair of support plates 1,
A disk-shaped twist ring 5 is rotatably supported in a horizontal state on the front protruding portion between 1'.

The support plates 1, 1' have circular support holes 6 in their forward protruding parts from the base plate F, as shown in the fourth figure.
A tapered approximately V-shaped guide groove 7 is formed in each of the support plates 1, 1' to open from the front end of the support plate 1, 1' to the center of the support hole 6 and to penetrate through the upper and lower surfaces thereof. be.

On the other hand, the twist ring 5 has a disk-shaped ring body having shaft parts 9, 9 protruding from the center of both upper and lower surfaces of a gear part 8 having a diameter larger than the support holes 6, 6, as shown in FIG. A tapered approximately V-shaped wire guide groove 10 cuts into the middle of the shaft parts 9, 9 from the periphery of the gear part 8 toward the center and penetrates the upper and lower surfaces, and the guide groove 10 reaches from the tip to the center of the ring body. Similarly, a wire clamping groove 11 penetrating the upper and lower surfaces is formed, and the clamping groove 11 has a groove width through which one wire can pass, and in this example, two wire clamping grooves 11 are formed.
It is long enough to hold the wire of a book. Such a twist ring 5 is connected to the pair of support plates 1, 1'.
The shaft portions 9, 9 are placed horizontally between the support holes 6,
6, and when the wire guide groove 10 is aligned with the guide grooves 7, 7 of both support plates 1, 1', the vertically positioned wire remains in the guide groove 7. Twisted ring 5 pushed into ,7
The wire guide groove 10 is then in communication with each groove so that it can be inserted vertically into the clamping groove 11. Note that the tip surfaces of the shaft portions 9, 9 form one plane with the upper and lower surfaces of the support plates 1, 1', respectively. A wire extrusion head 12 is arranged in front of the wire twisting mechanism (on the right side in Figures 1 and 2) so as to be able to move forward and backward across the twist ring 5.
2 is an upper arm 1 composed of two pieces from the front end of the base 13;
4, 14, the lower arm 14' is composed of two pieces,
14' protrude in a U-shape with appropriate vertical spacing towards the twist ring, and wire receiving rollers 15 and 1 serving as wire receiving portions are provided at the tips of the upper and lower arms.
5' are attached to each. When the upper and lower arms 14, 14, 14', and 14' advance, the wire receiving rollers 15 are held in a state in which the twist rings 5 are sandwiched between their upper and lower surfaces at appropriate intervals as shown by the chain lines in FIG. , 15' to the clamping groove 11 of the twist ring 5.
The vertical spacing and length are designed so that they can be placed vertically opposite each other near the innermost part.

The two wires W, W to be twisted are placed on the upper and lower wire receiving rollers 1 of the extrusion head 12.
Both upper and lower ends are held on the front surfaces of the plates 5 and 15' and are supplied vertically. Further, the extrusion head 12 is moved back and forth by a driving means such as a fluid pressure cylinder.

The rotational drive mechanism for the twist wheel 5 includes a shaft 17 supported by a bearing 16 fixed on a base plate F, one end of the shaft 17 protruding to the rear between the pair of support plates 1 and 1', and the protruding end While fixing the gear 18 to
Two idle gears 19, 19 (first
) are rotatably supported by the support plates 1 and 1' between the support plates 1 and 1', and the shaft 17
A bevel gear 20 is fixed to the other end, and the gear 2
Rotation of the motor is transmitted to the motor 0 via a drive shaft 21 and a bevel gear 22. In this case, an appropriate control mechanism is provided to control the number of rotations of the twist ring 5 and the rotation stop position of the twist ring 5 in accordance with the desired number of twists of the wire.

The mechanism for cutting the wire after twisting the wire is as follows. In FIGS. 1, 2, and 3, a slide plate guide plate 23 extending left and right is erected on the front end of the base plate F, and on the upper front surface (right side in FIGS. 1 and 2) of the guide plate 23, The guide rail 24 having an L-shaped cross section is attached to the support plates 1, 1' by bolts 25...
The slide plate 26 is fitted onto the guide rail 24 and placed on the support plate 1 so as to be slidable left and right. A cutter plate 27 having a shaped cutting edge 28 is fixed with bolts 29 with the cutting edge 28 horizontally and directed to the right, and a straight cutting edge 31 is also provided on the right side of the twist ring 5 on the support plate 1. With the cutting edge 31 of the other cutter plate 30 facing the cutting edge of the cutter plate 27, insert the bolt 32.
It is fixed by... The slide plate 26 is reciprocated by a driving means such as a fluid pressure cylinder,
One cutter plate 27 is moved to align or separate the cutting edges 28 and 31 from the other cutter plate 30.

The operation of this device will be explained next. From the state shown in FIGS. 1 and 2, the wire extrusion head 12 is advanced to the side of the twist ring 5, and the lower arms 14, 14, 1
When the tips of 4' and 14' are positioned above and below the twist ring 5, the upper and lower wire receiving rollers 15 and 15'
The two vertical wires W, W pushed by the guide grooves 7, 7 of the support plates 1, 1' and the guide groove 1 of the twist ring
0 and inserted into the clamping groove 11 in a penetrating state with the wire cross sections aligned in series. Next, a predetermined rotation of the motor is transmitted to the twist wheel 5 via the drive shaft 21, bevel gears 22, 20, shaft 17, gear 18, and idle gears 19, 19, and when it is rotated a predetermined number of times, the wire W, W is the gripping groove 1 of the twist wheel 5
1, and a predetermined number of twists are applied to the portion between the clamping groove 11 and the upper and lower wire receiving rollers 15, 15'. When a predetermined number of twists have been completed, the twisting wheel 5 is stopped by the control mechanism at a position where the V-shaped opening of the guide groove 10 is perpendicular to the cutting edge of the cutter plate 30.

Next, slide plate 26 of the cutting mechanism is driven to the right in FIG. 3 to move cutter plate 27 to the other cutter plate 3.
When moved toward 0, the cutter plate 27 pushes the wires W, W with its cutting edge 28 and releases them from the narrow holding groove 11 into the wide guide groove 10, and the wires W, Cut W. The cut upper two wires are connected by twisting at their lower ends, and the lower two wires are kneaded by twisting at their upper ends, and then separated from the twist ring 5.

After cutting, the wire extrusion head 12 is moved back to its original position, and the twist ring 5 is stopped rotating at the position where its guide groove 10 matches the guide groove 7 of the support plates 1, 1', and the next twisting and cutting operation is started. Prepare for.

(Effects of the invention) The automatic wire twisting device of this invention has an extremely simple structure and is easy to assemble.
Further, the sliding of one side of the cutting mechanism automatically makes it easy to cut the wire, so it can be provided at a low cost, and when in use, the wire can be twisted and cut reliably.
Therefore, it can be effectively used for connecting wires in wire binding of waste paper, etc.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention, in which Fig. 1 is a partially omitted plan view, Fig. 2 is a cross-sectional view of Fig. 1, Fig. 3 is a front view of the twist mechanism, and Fig. 4 is a part of the support plate. A partially omitted plan view, FIG. 5 is a plan view of the twist ring. 5...Twist ring, 10...Wire guide groove, 11
...Wire clamping groove, 12...Wire extrusion head, 1
4... Upper arm, 14'... Lower arm, 15,
15'...Wire receiving roller, 27...Cutter plate,
28...Blade tip, 30...Cutter plate, 31...Blade tip.

Claims (1)

[Claims for Utility Model Registration] Support plate 1 having circular support holes 6, 6 at the tip,
1' supports a rotatable twist ring 5 in a concentric positional relationship with the support holes 6, 6, and the support plates 1, 1'
from the front end of the support plates 1, 1' to the support holes 6,
6, the twist ring 5 has a tapered wire guide groove 10 which cuts into the center from the outer peripheral surface of the twist ring 5 and penetrates through both end faces of the twist ring 5, and the guide groove. A wire clamping groove 11 of a width continuous with 10 and clamping a plurality of wires in series is formed, and an extrusion head 12 is provided so as to be movable forward and backward along the twist ring 5. A pair of arms 14, 14, 14', 14' are provided protrudingly in a U-shape, and wire receivers for receiving and supporting a plurality of wires are provided at the tips of both arms, and when the extrusion head is advanced. , the pair of arms 14, 14, 1
Both wire receiving portions 4' and 14' are in a position facing the wire clamping groove 11 on both sides of the twist ring 5, and the cutting edge 28 of the cutter plate 27 slides on the end face of the twist ring 5. The cutter plate 30 is movably disposed on the support plate 1 with its cutting edge 31 facing the cutting edge 28 of the cutter plate 27, and the cutter plate 27 is fixed with its cutting edge 28 facing the twisting ring 5. An automatic wire twisting device with a cutter, which is equipped with a drive means for reciprocating the wire in contact with the end face.