JPH024450B2 - - Google Patents

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a binding device for binding objects to be bound using wire rods such as wires, that is, wire rods wound around objects to be bound are The present invention relates to a binding device that twists and connects a part and a supply side to each other at a parallel location, and cuts the supply side wire at a position adjacent to the twisted joint part.

(Problems to be solved by the prior art and the invention) As this type of binding device, for example,
The device described in Publication No. 72095 is known,
A rotating body for twisting the wire, a wire guide that can be opened and closed, a wire clamp that clamps the end of the wire, and a wire cutter are used. However, in the device described in JP-A-49-72095,
The wire guide, which is held in a closed position by a spring, is forcibly pushed open by a wire that moves relative to the wire guide in the direction of escape. It is preferable to configure the device so that it is forced to open. This is because when the wire rod is fed into the wire rod guide, the wire rod guide is completely closed with a strong spring to prevent it from opening unexpectedly, but when the wire rod escapes from the wire rod guide and moves, the wire rod There is no need to apply excessive force to the

Therefore, an actuator such as a cylinder unit that opens and closes the pair of front and rear wire guides, an actuator such as a cylinder unit that operates the wire clamp, and an actuator such as a cylinder unit that operates the wire cutter are required. According to the conventional method of configuring the device described in Japanese Patent Publication No. 49-72095, actuators for driving each of the operating parts must be provided individually, resulting in high costs.

(Means for Solving the Problems) In order to solve the conventional problems as described above, the present invention provides a rotating body 6 for twisting wire rods, and a rotating body 6 for twisting wire rods.
In the bundling device, the wire rod guide 9 is provided with a wire rod guide 9 that can be opened and closed, and a wire rod cutter 11 and a wire clamp 12 that are installed on the wire rod entrance side of the rotating body 6. The opening/closing lever 20 is biased and held in the closed position by a spring 22, and is provided with interlocking means 43 for opening the opening/closing lever 20 in conjunction with the clamping operation of the clamp arm 36 in the wire clamp 12. The present invention proposes a binding device which is provided with a wire rod guide closing movement regulating means 59 that holds the opening/closing lever 20 at the opening limit position while the cutting slider 51 of the wire rod cutter 11 is in the cutting action position. Note that the numbers in parentheses are given to clarify the correspondence with the constituent members of the embodiments described later.

The interlocking means 43 and the wire guide closing motion regulating means 59 may be constructed by any mechanism as long as the above operating conditions can be satisfied. That is, once the operating conditions are determined, the interlocking means 43 and the regulating means 59 that satisfy the predetermined operating conditions can be constructed by utilizing a transmission mechanism using conventionally known links, pins, guides, rods, chains, wires, etc. This is easy for a person skilled in the art,
It goes without saying that the present invention is not limited to the specific structure of one embodiment described later.

(Operation of the Invention) When the clamp arm 36 of the wire rod clamp 12 is released and the cutting slider 51 of the wire rod cutter 11 is in the non-cutting operation position, the opening/closing lever 20 of the wire rod guide 9 is moved by the spring 2.
It is held in the closed position by the urging force of 2.

If the wire is fed into the wire insertion path in such a state,
The wire is fed through the closed wire guide 9 and the wire twisting rotating body 6, and the end portion of the wire that has gone around the object to be bound is fed into the closed wire guide 9 again. It can be inserted into the rotating body 6 for twisting the wire rod.

Once the wire rod is inserted into the wire twisting rotating body 6 in this way, the clamp arm 36 of the wire rod clamp 12 is driven to the clamping position by a suitable actuator such as a cylinder unit to clamp the wire end portion. As is conventionally known, the wire is pulled back and the object to be bound is tightened with the wire. Here, the interlocking means 43 interlocks with the clamping operation of the clamp arm 36 to open/close the opening/closing lever 2 of the wire guide 9.
Since the wire guide 9 is opened against the spring 22, the wire guide 9 is automatically opened.

Next, by rotating the wire rod twisting rotating body 6 in a predetermined direction, the two wire rod portions inserted through the rotating body 6 can be twisted and connected to each other. .

After rotating the wire rod twisting rotating body 6 by a predetermined amount, the cutting slider 5 of the wire rod cutter 11
1 is driven by a suitable actuator such as a cylinder unit to cut the wire connected from the wire torsion joint to the wire supply side. Thereafter, the wire rod clamp 12 is released to allow the wire rod torsion joint to escape from the binding device. By holding the wire rod guide in the cutting operation position without returning it, the wire rod guide closing movement regulating means 59 works,
Even when the clamp arm 36 of the wire rod clamp 12 returns to opening, the opening/closing lever 20 of the wire rod guide 9 remains in the open position. That is, the wire guide 9 can be prevented from interfering with the escape of the wire torsion joint from the binding device.

Once the wire twist joint has escaped from the binding device, the cutting slider 5 of the wire cutter 11
1 is returned, the opening/closing lever 20 of the wire rod guide 9 is automatically closed by the biasing force of the spring 22, and preparation is made for feeding the next wire rod.

(Effects of the Invention) As described above, according to the bundling device of the present invention, due to the existence of the interlocking means 43, an actuator such as a cylinder unit for opening the wire guide 9 is not required, and a control means for controlling each actuator is also unnecessary. Due to the simplicity, the entire device can be constructed at low cost.

Moreover, if the two were simply linked, the opening/closing lever 20 of the wire rod guide 9 would also close due to the biasing force of the spring 22 in conjunction with the opening of the clamp arm 36 of the wire rod clamp 12, which would prevent the next wire rod twisting. However, the wire guide closing movement regulating means 59 cannot be removed from the binding device.
Due to the existence of the wire rod torsion joint, the wire rod torsion joint can be easily removed from the binding device by simply delaying the return movement of the cutting slider 51 of the wire rod cutter 11. In other words, the existence of the wire rod guide closing motion regulating means 59 makes it possible for the first time to interlock the clamp arm 36 of the wire rod clamp 12 and the opening/closing lever 20 of the wire rod guide 9, thereby reducing the number of actuators. be.

(Example) An example of the present invention will be described below based on the attached illustrative drawings.

In FIG. 1, 1 is a binding device of the present invention, 2 is a wire feeding/retracting device, 3 is a wire guide disposed so as to surround an object 4 to be bound, and a wire 5 is a wire rod guide 3. It is possible to escape from inside to the side of the object to be bound 4.

As shown in FIGS. 2 to 6, the binding device 1 includes:
Wire rod guides 9 and 10 are provided at two locations on the wire rod insertion path and can be opened and closed on the side of the object to be bound 4, and a wire rod is provided at an intermediate position between both wire rod guides 9 and 10 so as to be able to rotate only around the wire rod insertion path. It includes a twisting rotating body 6, a wire cutter 11 provided on the wire inlet side 7 of the rotating body 6, and a wire clamp 12 similarly provided on the wire inlet side 7.

The wire rod twisting rotating body 6 has a recessed portion 14 that penetrates in the axial direction and is opened to one side in the radial direction.
and a passive gear part 13 concentrically integrally formed in the central part, and the recessed part 14 has a narrow central part 14a that is slightly wider than the diameter of the wire 5, enlarged both end parts 14b on both sides thereof, 14c. Reference numerals 15a and 15b are a pair of front and rear fixed bearing members that rotatably support the shaft portions 6a and 6b at both ends of the rotating body 6, and are fixed to the device main body 16, released toward the object to be bound 4, and Recessed part 14
Recessed portions 17a and 17b that can communicate with the enlarged end portions 14b and 14c are provided so as to penetrate in the axial direction of the rotating body 6.

The entrance side wire rod guide 9 has a fixed recessed guide portion 1
8 and a lever 20 which has a movable guide part 19 at its tip for opening and closing and is swingably supported by a support shaft 21. 19 is held at the closed movement limit position where it forms a wire passage with the recessed guide portion 18.

The exit side wire rod guide 10 has a fixed bearing member 15b.
It consists of a fixed recessed guide part 24 formed in a fixed member 23 attached to the outside of the main body 16, and a lever 26 with a movable guide part 25 at its tip for opening and closing the guide part 24. A support shaft 29 is pivotally supported on a bearing member 27 attached to the bearing member 27 so as to be able to swing around a support shaft 28.
The arm 30, which is pivotally supported by
A cylinder unit 32 that swings the lever 26 via the arm 30 is disposed between the arm 30 and the main body 16.
is interposed. 33 is a limit switch operated by an attachment 34 attached to the piston rod side of the cylinder unit 32, and detects the opening limit of the lever 26.

The wire clamp 12 includes a clamp arm 36 supported by a support shaft 35, a lever 38 supported by a support shaft 37, a link 39 that interlocks and connects the clamp arm 36 and the lever 38, and a lever. 38 and the main body 16, and an attachment 41 attached to the piston rod side of the cylinder unit 40.
The clamp arm 36 is configured with a limit switch 42 that detects the opening limit of the clamp arm 36 via a
makes the wire 5 a part of the recessed guide portion 18 of the wire guide 9 and clamps it.

43 is a means for interlocking the wire rod clamp 12 and the wire rod guide 9, and the lever 2 in the wire rod guide 9
0 via a roller 44 pivotally supported on the lever 2.
0 against the tension coil spring 22, the wire rod guide drive lever 46 is pivotally supported by a support shaft 45, and a U-shaped arm 47 connected to this lever 46 is used to rotate the lever. 46 and a link 48 that interlocks and connects the lever 38 of the wire rod clamp 12.

The wire cutter 11 includes a slider 51 that is linearly reciprocated between a pair of left and right guides 50 by a cylinder unit 49 interposed between the wire rod cutter 11 and the main body 16, and a wire rod penetration support provided through the tip of the slider 51. A base 54a is composed of a hole 52 and a fixed receiving blade 53 that cuts the wire 5 in cooperation with the hole edge of the wire through-support hole 52, from which the guide 50 is integrally protruded and which is attached to the main body 16. , the recessed guide portion 18 of the wire guide 9
are provided, and the support shafts 21, 35, 37, 4
5, the levers 20, 38, 46 and the clamp arm 36 are pivotally supported. 54b is a cover plate attached to the pair of left and right guides 50, and this cover plate 54b and the base 54
The slider 51 slides between a. or,
This cover plate 54b has a wire guide hole 55.
is provided. Reference numeral 56 indicates a limit switch that detects the limit position of the slider 51 via an attachment 57 attached to the piston rod side of the cylinder unit 49, and reference numeral 58 indicates a limit switch that detects the limit position of the slider 51 via the attachment 57. It is.

59 is a closing movement regulating means for the wire guide 9;
As shown in FIG. 9, a long hole 60 formed in the slider 51 and a
Roller 6 pivotally supported on lever 20 of wire guide 9
1, when the slider 51 is at the entry limit position, the roller 61 approaches one end of the elongated hole 60,
The lever 20 is prevented from closing by the tension coil spring 22.

Reference numeral 62 denotes a drive means for the wire twisting rotary body 6, which includes a drive gear 64 driven by a motor 63 in any forward or reverse direction, and a passive gear portion 13 of the drive gear 64 and the rotary body 6. Intermediate gears 65 and 66 interlockingly connect the intermediate gears 65 and 66, and limit switches 68 and 6 that detect the rotation start position and end position of the rotating body 6 via an attachment 67 that interlocks with the intermediate gear 65.
9, and a stopper pin 71 attached to the main body 16 so as to loosely fit into a concentric arc-shaped guide groove 70 formed in the intermediate gear 66.

Next, the method of use and operation will be explained. At the start of the binding action, the recessed part 14 of the rotating body 6 for twisting the wire rod is oriented in the distance direction relative to the object 4 to be bound, as shown in FIGS. 2 to 6. When the wire rod guides 9 and 10 are in a closed state,
As shown in FIGS. 2 and 3, the recessed guide portion 1
8 and the movable guide part 19 and between the recessed guide part 24 and the movable guide part 25, the recessed part 1
A horizontally elongated wire passage connecting both ends of the wire rod 4 is formed.

In the above state, the wire 5 is moved by the wire feeding and pulling device 2 shown in FIG. 52, between the recessed guide part 18 and the movable guide part 19 of the wire guide 9, the recessed part 14 of the rotating body 6, and the wire guide 1
The wire guide 3 is passed between the recessed guide part 24 and the movable guide part 25 in this order in a straight line.
send to. Then, this wire rod 5 is connected to the object 4 to be bound.
After going around the periphery, the fourth
As shown in FIG. 6 and FIG. 6, the rotary body 6
The recessed portion 14 of the wire rod guide 10 and between the recessed guide portion 24 and the movable guide portion 25 of the wire rod guide 10 are fed in a straight line in this order. Then, feeding of the wire 5 is stopped with the free end 5a of the wire protruding from the wire guide 10 by an appropriate length. As a result,
Inside the recessed part 14 of the rotating body 6 and the wire guides 9 and 1
0 recessed guide parts 18, 24 and movable guide part 1
9 and 25, two wire rods 5b and 5c are arranged in parallel.

Next, as shown in FIG. 7, the cylinder unit 40 is actuated to rotate the clamp arm 36 clockwise via the lever 38 and link 39.
Only the free end wire 5c is pressed and fixed between the recessed guide portion 18 of the wire guide 19 and the tip pressing portion 36a. At this time, the rotation of the lever 38 is transmitted to the lever 46 via the link 48 and the U-shaped arm 47.
This lever 46 rotates clockwise to rotate the lever 20 of the wire guide 9 clockwise against the tension coil spring 22, so that the movable guide section 19 moves into the recessed guide section. 18
The wire guide 9 is rotated away laterally from the wire guide 9 and released.

When the clamping action by the wire rod clamp 12 is completed, the wire rod 5 is pulled back by the wire feed and pull-back device 2, and the binding device 1 is moved by the tension of the wire rod 5 or mechanically as shown by the imaginary line in FIG. The wire rod 5 is moved toward the object 4 side, and the wire rod 5 is escaped from the wire rod guide 3 inward and wound around the object 4 to be bound. In this state, the motor 63 is operated, and the wire twisting rotating body 6 is rotated as shown in FIG. Rotate clockwise the specified number of times. At this time, as shown in FIG.
b, 5c, on the wire rod inlet side 7 of the rotating body 6, the supply side wire rod 5b is held in the wire rod through support hole 52 of the wire rod cutter 11, and the free end side wire rod 5c is clamped by the wire rod clamp 12. At the wire outlet side 8 of the rotating body 6, the wire guide 1
0, the recessed portion 14 of the rotating body 6
As the rotating body 6 rotates, only the wire portion 5d held by the narrow central portion 14a rotates in a state in which two wire rods are arranged in parallel. Two wire rods 5b, 5 are placed in the front and rear enlarged both ends 14b, 14c.
c are twisted together in the same direction. As a result, 2
The book wire rods 5b, 5c are connected by two twisting joints 5e, 5f, front and rear.

When the above-mentioned wire torsion coupling action is completed, that is, when the rotating body 6 has finished rotating a predetermined number of times, the rotating body 6 is released until its recessed portion 14 faces the side where the objects 4 are located, and the rotating body 6 is released. As shown in FIG. 10, the enlarged both ends 14b and 14c of the recessed portion 14 correspond to the recessed portions 17a and 17b of the fixed bearing members 15a and 15b.
It is connected to match. In this state, the slider 51 of the wire cutter 11 is then retracted to the upper limit position by the cylinder unit 49. As a result, as shown in FIGS. 9 and 10, the wire 5b passing through the wire through support hole 52 of the slider 51 is drawn toward the side where the fixed receiving blade 53 is located, so that the wire 5b is connected to the fixed receiving blade 53 and the wire. It is cut between the hole edge of the through support hole 52. That is, the wire 5 that binds the objects 4 and is connected in a loop shape by the torsion joints 5e and 5f is cut and separated from the wire 5 on the wire feeding and pulling back device 2 side. After that, as shown in FIG. 9, the cylinder unit 40 is operated, and the wire clamp arm 36 is rotated counterclockwise via the lever 38 and the link 39, thereby releasing the clamp of the wire 5c by the pressing portion 36a. and at the same time actuate the cylinder unit 32,
The lever 26 is rotated counterclockwise via the arm 30 and the link 31 to rotate the movable guide portion 25 of the wire guide 10 away from the recessed guide portion 24 as shown by the imaginary line in FIG. Wire guide 10
let go.

In conjunction with the release of the wire rod clamp 12, the driving lever 46 of the wire rod guide 9 also rotates counterclockwise as shown in FIG. long hole 60
supports the roller 61 of the lever 20, so the lever 20 cannot be rotated counterclockwise again by the tension coil spring 22. That is, the wire guide 9 continues to maintain the released state.

Therefore, as shown by the imaginary line in FIG. 10, the wire torsion joints 5e and 5f are returned to the solid line position by the tension of the wire 5 or by the binding device 1 from the imaginary line position in FIG. When moving, the fixed bearing member 15
It is possible to escape from the binding device 1 via the recessed portions 17a and 17b of a and 15b. Then, before performing the next binding operation, by returning the slider 51 of the wire cutter 11 to the limit position,
The lever 20 of the wire guide 9 automatically closes.
Furthermore, by closing the lever 26 of the wire rod guide 10 to the position shown by the solid line in FIG. It can be fed as the feeding free end 5a during the next binding operation.

[Brief explanation of drawings]

Figure 1 is a schematic elevational view showing the entire binding machine, Figure 2 is a front view of the binding device of the present invention, Figure 3 is a rear view thereof, Figure 4 is a longitudinal sectional view taken along arrow A, and Figure 5 is a longitudinal sectional view taken along arrow B. 6 is a vertical sectional view taken in the direction of arrow C, FIG. 7 is an explanatory view of the action when clamping the wire rod, FIG. 8 is a cross sectional view showing the state when the wire rod is twisted, and FIG. FIG. 10 is a diagram illustrating the action at the time of cutting the wire, and is a longitudinal sectional view at the time of the same action. 1... Binding device of the present invention, 4... Object to be bound, 5...
...Wire rod, 6...Rotating body for twisting wire rod, 9, 10...
...Wire rod guide, 11...Wire rod cutter, 12...
Wire clamp, 14, 17a, 17b... recessed part, 18, 24... fixed recessed guide part, 15
a, 15b... fixed bearing member, 19, 25... movable guide part, 20, 26, 38, 46... lever, 22... tension coil spring, 32, 4
0, 49... Cylinder unit, 36... Wire rod clamp arm, 36a... Pressing part, 43... Interlocking means between wire rod clamp 12 and wire rod guide 9, 4
4, 61...Roller, 46...Lever for driving the wire rod guide, 51...Slider, 52...Wire rod penetration indication hole, 53...Fixed receiving blade, 55...Wire rod guiding hole, 59...Wire rod guide 9 Closing motion regulating means, 60
. . . Elongated hole, 62 . . . Drive means for the rotating body 6 for twisting the wire rod, 63 . . . Motor, 71 . . . Stopper pin.

Claims (1)

[Claims] 1. A wire rod twisting rotating body 6 and a wire guide 9 that can be opened and closed and is disposed on the wire inlet side of the rotating body 6.
In a binding device equipped with a wire cutter 11 and a wire clamp 12 disposed on the wire inlet side of the rotating body 6, the opening/closing lever 2 of the wire guide 9
0 is biased and held in the closed position by a spring 22, and is provided with an interlocking means 43 that opens the opening/closing lever 20 in conjunction with the clamping operation of the clamp arm 36 in the wire clamp 12,
Furthermore, the cutting slider 5 of the wire cutter 11
1 is in the cutting action position, the opening/closing lever 20
A binding device comprising a wire guide closing movement restricting means 59 for holding the wire rod at the opening movement limit position.