JPH07178490A - Ring machine - Google Patents

Abstract

PURPOSE:To obtain a ring machine which can produce the ring by cutting by a coil from a coiled spring like body. CONSTITUTION:A hoop like wire is fed out from a coil 205 with a feeding device 2, made into a prescribed radius's arc like with a core metal 501 and a 1st forming roll 505, made into an accurate ring with a 2nd forming roll 505B, guided with a guiding bars 538, 542, etc., completed into a first coil's ring, when a 2nd coil's ring is formed in the same way, it is clamped with a clamping device 305 of a conveying body 3 and the 1st coil's ring is cut with a cutting device 4. The conveying body 3 revolves, a butt-welding device 6 welds the ring's cutting end at the welding position, by feeding it to the next stage, after annealing it in an annealing device 7, in the next step, a clamp releasing pin releases the ring and receives it in a selecting box 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ring processing apparatus for cutting a coiled wire from a wire in one winding and welding a cutting opening to form a ring.

[0002]

2. Description of the Related Art In a conventionally known device, a coiling base and a welding base of a coil cutting opening are separated, and the coiled and cut ring is mounted on a horizontally swiveling index table via a transport guide. The jig was positioned and set, and the opening was welded and annealed.

[0003]

As described above, since the coiling base and the welding base are separated, there is a problem that a large floor area is required and the cycle time becomes long. In addition, since one coil is cut and then the one conveyed to the welding process via the guide is gripped, there is a problem in that the position is varied during welding and the quality is uneven. The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide a ring processing apparatus capable of saving space, shortening cycle time, and stabilizing quality. Is.

[0004]

In order to achieve the above object, the present invention provides a vertical mounting plate for a machine base, a wire rod feeding guide device provided so as to be fed in parallel with the vertical mounting plate, and A ring cutting device which is provided immediately before the wire feed-out guide device and is capable of advancing and retreating on the vertical mounting plate; a ring forming device which is provided next to the ring cutting device and which forms an annular shape in a substantially vertical plane; A carrier which is provided on the machine base so as to be pivotable and axially movable about a horizontal axis and has arms at equal angles in the radial direction, an intermittent drive indexing means for the carrier, and a cutting provided on each arm of the carrier. A ring gripping device, a means for opening and closing the cutting ring gripping device, a cutting ring end welding means provided in the transport path of the carrier, and a cutting ring end welding means in the transport path of the carrier. Welding part annealing means A cutting ring discharge means provided in the following the weld annealing means in the conveying path of the conveying member,
The driving control means for each of the above elements is included, and the steps of welding and annealing the cutting ring after ring molding are conveyed and discharged while gripping.

[0005]

The fed wire is molded by the molding device so as to form a ring of a predetermined size, and when one roll is formed, the wire feeding is stopped. The gripping device provided on the arm of the carrier grips one ring by the action of the opening / closing means, and the cutting device cuts the gripped ring. The carrier is rotated to index the cutting ring to the welding position, and the cutting surface at the end of the cutting ring is welded. The carrier is rotated again, the welded ring is indexed to the annealing position, and the weld is annealed. The carrier is rotated, the ring is indexed to the discharge position, the gripping member is opened by the opening / closing means, and the ring is discharged to the sorting box.

[0006]

EXAMPLE An example of the present invention will be described with reference to FIGS. In FIG. 1 showing the overall configuration and FIG. 2 of the cutaway view, a vertical mounting plate 101 is established in front of the machine base 1, and a wire rod feeding guide for horizontally feeding the wire rod is provided at the left position of the mounting plate 101. A device 2 is provided, and a mounting device 305 is provided on the front surface of the mounting plate 101 for gripping a formed ring and conveying it to the next process. The body 3 is arranged.

Corresponding to the uppermost indexing position of the carrier 3, a cutting device 4 in the second step is provided vertically in front of the guide device 2 so as to cut the wire. Further, following the cutting device 4, a forming guide device 5 for guiding the wire rod in the first step into a ring and forming a correct circle is arranged. Further, the clamp member 9 of the gripping device 305 is arranged on both sides of the cutting device at the highest index position. Further, a welding device 6 for the ring cutting part 6 and then an annealing device 7 are arranged corresponding to the indexing position of the carrier 3, and a discharge part is provided at the final indexing position, and the gripping device of the carrier 3 operates. Holding release member 820 of member 8 and storage sorting box 81
Two are provided.

Next, the individual elements will be described. As shown in FIG. 1, the wire rod feed-out guide device 2 has a feed-out lower roller 201 which is driven by a NC-controlled feed servo motor (not shown) provided on the back surface of a mounting plate 101 via a speed reducer and is rotatably supported horizontally. The feeding upper roller 202 paired with this is pressed by the air cylinder device 203 via the shaft 204 with the safety device having the coil spring built therein so as to apply the gripping force of the wire. A quill 205 is arranged on the front plate 102 of the mounting plate 101 on the delivery axes of the delivery rollers 201 and 202, and the quill 205 is fed by the delivery rollers 201 and 202 through a straightening device (not shown). Are intermittently sent from the quill 205.

As shown in FIGS. 3 and 4, the cutting device 4 is arranged vertically so that the fixed blade 401 cuts at the position of the first roll when the second roll of ring molding is formed on the lower side immediately before the quill. It is provided on the front plate 102, and its height can be adjusted by screws according to the product diameter. The movable blade 402 corresponding to the fixed blade 401 is a guide plate 40 provided perpendicularly to the mounting plate 101.
3 is attached to the lower end of a movable element 404 slidably provided on the movable element 404, and the hydraulic cylinder device 405 connected to the movable element 404 operates to shear one coil of the second coil. The cutting blade of the movable blade 402 has a half-moon concave shape according to the wire diameter of the wire rod and can be replaced according to the product.

As shown in FIGS. 5 to 10, in the forming guide device 5, a core metal 501 having a circumferential groove of the same shape as the wire rod to be formed subsequent to the cutting device 4 is screwed to the bracket of the front plate 102 of the mounting plate 101. The mounted screw 502 supports the core metal support 503 whose height can be adjusted with respect to the axis of the quill 205 so that the center of the circumferential groove is located on a vertical plane including the axis of the quill or at a position slightly displaced. The height is adjusted according to the diameter of the ring to be molded.

The forming roller (tool) 505 of the first forming apparatus for forming the wire rod fed from the quill 205 into a ring with the core metal 501 has a circumferential groove 505a equal to the diameter of the forming wire rod in the circumference, and a bearing 506. It is rotatably supported by the roller support rod 507. This roller support rod 507
The shaft portion 507b is rotatably supported by the L-shaped angle 508, and is sandwiched by the twist adjusting bolts 509 having both side surface heads of the side surface 507a as arcs. The twist adjusting bolt 509 twists the forming ring in the same manner as when applying the initial tension of the coil spring to the ring.

A guide 511 fixed on the mounting plate 101
The slider 512 is provided with a slider 512 which is slidably fitted and whose position can be adjusted with a screw 513 and which is fixed with a bolt 517.
It is attached so that the angle can be adjusted with, and is fixed with three fixing screws 515. Further, in order to maintain the adjusted angle with respect to the pressing force at the time of molding, it is further fixed by two bolts 516 that press the angle side surface 508a. Therefore, the diameter of the molding ring is determined by adjusting the position of the mover 512, the angle of the L-shaped angle 508, and the position of the core metal 501.

The forming roller (tool) 505B of the second forming device is provided next to the forming roller 505 of the first forming device, and when the ring formed by the first forming roller 505 has a large diameter, spring back is applied. This is to correct the increase in diameter. This second molding device is not always necessary. Parts of the second molding device having the same configuration as those of the first molding device will be denoted by B after the same numerals, and a description thereof will be omitted. Only different parts will be described. A rack 521, which faces the moving direction via an angle, is fixed to the mover 512B.
1 is meshed with a pinion 524 keyed to a turning shaft 523 supported by a bracket 522 fixed to the mounting plate 101, and the forming roller position is adjusted by manually turning the turning shaft 523.

A guide shaft 531 having a circumferential groove having the same diameter as the ring R2 of the second roll, which guides the inner diameter of the ring R2 of the second roll immediately after the second molding device, is vertically moved by the guide plate 532. Is mounted on a support body 534 whose position is adjustable and is fixed to the front plate 102 by bolts 533. Further, a guide shaft 536 having the same circumferential groove for guiding the outer diameter of the ring R2 of the second winding is similarly guided by a guide plate 537, and is similarly bolted to the front plate 102 so as to be positionally adjustable. Attached to a supporting body 538.

Further, a circumferential groove having the same diameter as that of the ring R2 of the second winding is provided near the end of the ring R2 of the second winding to stabilize the outer diameter of the ring R2 of the second winding. A guide shaft 538, which is arranged at a position displaced to the outside, is attached to a support 539 which is positionally adjustable on the front plate 102. Furthermore, a straight guide shaft 541 that guides the inner diameters of the first ring R1 and the second ring R2 at the same time and a straight eccentric guide shaft 542 that guides the outer diameter of the front plate 10 are positionally adjustable.
It is attached to a support 543 which is bolted to 2.

The carrier 3 is shaped like a coil spring of two windings in FIGS. 1, 2, 5 and 11 to 13.
The ring R1 of the winding is gripped, cut and conveyed to the next step. The carrier 3 having six arms 301 in a radial direction is indexed and indexed by a cam (not shown) about a horizontal pivot shaft 302 rotatably supported by the machine base 1 directly below the cutting device 4. It is operated by a known drive unit commercially available for reciprocating a predetermined amount in the axial direction, for example, an index handler manufactured by Sankyo Seisakusho. A base plate 306 of a gripping device 305 attached in a T shape to the tip of each arm 301 is positionally adjustable by an adjusting bolt 307.
It is fixed by 08.

In the gripping device 305, gripping claw members are attached to the lower surface of the wing so that the distance between the wings can be adjusted at both centrally symmetrical positions in FIGS. 11 to 13. The gripping claw member has a scissors-shaped gripping claw 311 supported by a support shaft 312 on a mounting plate 310 fixed to the lower surface of the wing in parallel with the carrier rotating shaft 302. The claw portion 313 of the grip claw 311 is provided with a concave arc groove having a ring diameter along the arc of the ring at the position where the ring R1 of the first roll is gripped. A compression coil spring 314 is interposed in the arm on the side opposite to the claw portion so as to be biased toward closing, and a gripping release pin 8 to be described later is provided on the arm facing surface.
A circular arc groove 318 into which 05 is fitted is cut.

Further, a through hole is formed in each arm in the same direction as the support shaft 312, and a headed pin 315 having a fitting length equal to the thickness of the arm is fitted therein. A head pin 316 having the same diameter as the head pin 315 is inserted into the mounting plate 310 from the back side of the mounting plate at a position directly below the through hole when the grip claw 311 is opened, and the compression coil spring 317 is used to press the head pin. 316 is a pin with a head 315
Is urged in the pushing direction.

The welding device 6 in the second step is provided on the side surface of the machine base 1 in FIG. An electrode fitting 602a, to which a conductor (not shown) is connected, is fixed to the fixed base 601 of the welding device via an insulating material via an insulating material. The electrode fitting 602a is a copper pipe member 60 having a hollow portion with a lower electrode 610a fitted at the tip.
5a is attached, and the copper pipe member 605a is provided with a water injection pipe 603a and a discharge pipe 604a for circulating the cooling water inside. An arc-shaped concave groove having the same diameter as the wire diameter of the first ring R1 is formed on the end surface of the lower electrode 610a, and the ring having the correct diameter is held by fitting the ring into the concave groove.

A column 606a is established on the base 601, and a balance 608a is pivotally supported on the top of the column 606 by a support shaft 607a so as to be rotatable. A piston rod end of a fluid pressure cylinder device 609a such as air pressure or hydraulic pressure is connected to one end of the balance 608a. The other end of the fluid pressure cylinder device 609a is pivotally supported by the column 606a.
To the other end of the balance 608a, one end of a slider 611a guided by a linear bearing in the longitudinal direction provided on the column 606a is connected. A flat upper electrode 612a is attached to the lower end of the slider 611a so as to face the lower electrode 610a via an insulating material. The upper electrode 612a is lowered by the operation of the fluid pressure cylinder device 609a, and one cut end of the ring is fitted into the concave groove and gripped.

The electrode part for holding the other cut end of the ring R1 of the first winding has the same structure, and the same number is denoted by b. At different points, the base 615 is movable so as to bring the cut ends of the rings into contact with each other. That is, the base 615
Is movably provided on a guide base 616 by a linear bearing, and a piston rod of an air pressure or hydraulic fluid pressure cylinder device 618 provided on a bracket 617 and a base 615 are connected by a compression spring 619. Advancement is performed via 619, and the pulling back of the base is performed via a head bolt 620. When the cut ends of the rings are abutted against each other, a circuit is formed by the command, and an electric current is passed to perform resistance welding.

As shown in FIG. 15, the annealing device 7 in the third step is a device in which the fixed sides of the welding device 6 are fixedly opposed to each other at a constant interval. Omit it. This annealing device controls the welding current to an annealing temperature by controlling the supply current value, and is annealed by energizing for a predetermined time.

As shown in FIG. 16, the operating member 8 of the gripping device is provided with a guide 8 provided on the front surface of the mounting plate 101 so that the ring can be discharged at the next station when the ring molding is completed.
01, a movable element 802 movable by a fluid pressure cylinder device (not shown) is placed, and an air or hydraulic fluid pressure cylinder that faces the axial direction of the ring R1 of the first winding is mounted on a side plate 803 established in the movable element 802. A device 804 is provided,
An air or hydraulic fluid pressure cylinder device 80 further oriented in the diametrical direction of the ring at the L-shaped angle of the piston rod end.
5 is attached. And fluid pressure cylinder device 80
A pair of opening and closing claws 806 are pivotally supported at the five ends, and the opening and closing claws 806 open and close by 90 ° as the piston advances and retracts. Then, an arcuate groove having the same diameter as the ring wire diameter is formed in the facing surface of the grip claw 806. The grip claws 806 grip the welded portion of the ring R1 of the first roll which is pivotally positioned.

Further, air or hydraulic fluid pressure cylinder devices 808 facing the gripping devices 305 are mounted at symmetrical positions on both sides of the gripping claws 806. At the end of the piston rod, a scissors-shaped gripping claw 311 of the gripping device 305 of the carrier 3 is provided.
Of the grip claw 31 by fitting in the arc groove 318 formed on the opposite side of the
1 is provided with a tapered release pin 809 having a tapered tip. At the position where the grip release pin 809 is fitted between the grip claws 311 and the claws are opened, the headed pin 316 pushes the headed pin 315 by the action of the spring 317 and is fitted into the through hole to keep the claw open state. Be done. The opened first ring R1 is stored in the sorting box 812 by the chute 811. The sorting box 812 is divided into a good product side and a defective product side by a shutter 815. Defective products are sorted by the signals of welding failure and annealing failure.

As shown in FIG. 3, the clamping device 9 of the gripping device 305 corresponds to the gripping device 305 of the arm 301 of the carrier 3 substantially symmetrically in the front position with respect to the cutting device 4, and corresponds to the front plate 10.
2 is provided with a fluid pressure cylinder device 901 of air or hydraulic pressure via a mounting plate 904. The mounting body 902 provided at the end of the piston rod is provided with a backing plate 903 which is urged to be retractable by a coil spring (not shown), and operates the fluid pressure cylinder device 901 before cutting the first ring R1. Two head pins 315 of the grip device 305 are pushed in, the head pins 316 are pulled out from the through holes, and the grip claw 311 is closed by the force of the spring 314 to grip the ring R1.

The operation of the present invention having this configuration will be described.
After adjusting the core metal, forming device, and guide bar so that the desired ring diameter can be obtained, first, the feed rollers 201, 202, quill 205 are sent from the hoop material through the straightening device by inching feed.
A little more wire is sent out. The tip of the wire is fed between the core metal 501 and the forming roll 505 adjusted so that a predetermined ring can be formed, and the continuous operation is started.

The wire rod fed from the quill 205 by the rotation of the feed rollers 201 and 202 is fed by the core metal 501 and the forming roller 505 of the first forming device with a predetermined curvature and a slight twist. Accurate curvature is obtained by the forming roll 505B of the second forming device, and the inner guide rod 53
1. The outer guide rod 536 is guided by a circumferential groove that is displaced from the quill axis by approximately 1/2 the wire diameter, and follows the planned line for the first roll, passing between the straight guide rods 541 and 542, and guiding the outer side. The first winding ring R1 is formed by being guided by the circumferential groove that is displaced toward the front side from the quill axis by approximately the wire diameter of the rod 538.

Further, the ring R2 of the second roll is accurately made by the first molding device and the second molding device and guided by the straight guide rods 541 and 542, and the end of the ring R1 of the first roll is the cutting blade. When it comes back soon, the feeding of the wire is stopped at the command of the control device. The formed ring has a ring diameter that was taken into consideration during the trial run with respect to the change in diameter due to the collision during welding.

When the hydraulic cylinder device 901 of the clamp member 9 is operated together with the stop command of the wire rod, the contact plate 903 is activated.
The head pin 315 of each pair of the gripping device 305 of the carrier 3 is pushed simultaneously, the head pin 316 fitted in the grip claw 311 is extracted, and the coil spring 314 causes the grip claw 311 to move to the first roll. Grasp the ring R1 at 180 ° apart. Next, the fluid pressure cylinder member 405 of the cutting device 4 is actuated, the movable blade 402 is lowered, and the fixed blade 40
The ring R1 of the first roll is cut with 1.

A motor (not shown) operates to rotate a cam type indexing device (not shown), and the carrier 3 moves in a direction away from the axial direction along with the rotation, and one pitch (60 ° in this embodiment).
It rotates and returns in the opposite axial direction for indexing. Similarly, the next ring is formed, and in the embodiment, it is further indexed by one pitch so that the first grip ring becomes the welding position in the second step. The fluid pressure cylinder devices 609a and 609b allow the sliders 611a,
611b is lowered and the ring is moved to lower electrodes 610a and 610.
It is fitted and positioned in the concave groove of b and is firmly clamped vertically.

By operating the fluid pressure cylinder device 617,
The base 601 is moved via the spring 618 and the cut ends of the ring R1 of the first roll are abutted against each other. A current is supplied to the hollow copper pipe member 605a, the lower electrode 610a, the first ring R1, the lower electrode 610b, and the copper pipe member 605b, which are cooled by turning on the power supply and flowing cooling water from a terminal (not shown). It is flowed and the cut end is overheated and resistance welded. At this time, if the current value is out of the allowable range, the shutter 815 of the sorting means is activated after the annealing described later by the NG command from the power supply device to discharge to the defective side of the sorting box 812. When energized for a predetermined time, the upper electrodes 612a and 612b rise.

In the embodiment, the ring R1 in which the carrier 3 is pivotally moved by two pitches and indexed at the annealing position in the third step is operated by the fluid pressure cylinder devices 609A and 609B to operate the upper electrode 612.
A and 612B are lowered, and the weld portion is sandwiched between the lower electrodes 610A and 610B. The hollow copper tube member 605A and the lower electrode 610 are turned on and energized according to a command from the control device.
A, ring R1, lower electrode 610B, hollow copper tube member 60
The welded portion of the ring reaches the annealing temperature by being heated by 5B and a flowing current and being subjected to a controlled voltage and current for a predetermined time. The current is cut off by a temperature sensor (not shown). At this time, if the temperature is out of the allowable range, N
The G signal is output and the fluid pressure cylinder member 80 is discharged in the discharging process.
In operation 6, the shutter 815 discharges the sorting box 812 to the defective product side.

When the annealing process is completed, the carrier 3 is similarly swung and axially moved to index by one pitch, and the ring R1 is positioned at the discharge position. Fluid pressure cylinder device 80
5 is operated and the grip claw 806 is closed to grip the joint portion of the ring R1 of the first roll. Next, the pair of fluid pressure cylinder devices 808 are operated and the gripping release pins 809 are advanced to be fitted into the arcuate grooves 318 of the gripping claws 311 of the gripping device 305 of the conveyance body 3 facing each other to release the gripping claws 311. At the open end, the headed pin 316 fits into the through hole of the arm of the gripping claw to maintain the open state.

The grip release pin 809 is pulled out, and the ring R1 gripped by the operation of the fluid pressure cylinder device 804 is moved to a position where it does not interfere. The mover 802 is moved by the operation of a fluid pressure cylinder device (not shown), and the grip claw 806 is opened at this position. The ring R1 is discharged to the chute 811, and the non-defective product is stored in the non-defective product side of the sorting box. At the end of this process, the product is completed. The carrier 3 is rotated by one pitch and makes one rotation.

[0035]

Since the present invention is constructed as described above, the present invention has the following effects. Since the feed roll, coiling, cutoff, index, welding, and annealing units are provided on one machine base and vertical mounting plate, the floor area of the machine can be reduced. In addition, since the coiling to the index were made continuous without removing them in a single operation, the cycle time could be improved. Furthermore, by directly chucking the coiled ring, cutting and indexing it, the positioning accuracy during welding was improved, and stable, high-quality rings can be manufactured.

[Brief description of drawings]

FIG. 1 is a front view of the device of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a diagram showing a part of a cutting device, a gripping claw operating member, and a gripping device.

FIG. 4 is a partial partial cross-sectional view of the cutting device.

FIG. 5 is a front view showing an arrangement of a quill, a core metal device, a first molding device, a second molding device, and a guide device.

FIG. 6 is a side view of the cored bar device.

FIG. 7 is a side view of the guide device.

FIG. 8 is a view showing a first molding apparatus, in which a is a front view and b is a central cross-sectional view when a molding roll is in a moving direction.

FIG. 9 is a view showing a second molding apparatus, in which a is a front view and b is a central sectional view with a molding roll in a moving direction.

FIG. 10 is an explanatory diagram showing a cross section of a main part of FIG. 9a.

11A and 11B are diagrams showing a gripping device provided on a carrier, in which a is a plan view and b is a side view.

FIG. 12 is a view taken along line CC of FIG. 11b.

FIG. 13 is a diagram showing a relationship between an opening position of a grip claw of the grip device and a grip position.

FIG. 14 is a front view of the welding device.

FIG. 15 is a front view of the annealing apparatus.

FIG. 16 is a diagram showing a gripping device and a gripping claw opening device of the gripping device for a carrier.

FIG. 17 is a side view of FIG.

[Explanation of symbols]

2 Wire rod feeding guide device 3 Conveying body 4 Cutting device 5 Forming device 6 Welding device 7 Annealing device 8 Actuating member for gripping device 201, 202 Feeding roller 205 Quill 305 Grasping device 311 Grasping claw 315, 316 Head pin 401 Fixed blade 402 Movable Blade 501 Core metal 505, 505B Forming roller 531, 532, 541, 542, 538 Guide rod 610a, 610b, 610A, 610B Lower electrode 612a, 612b, 612A, 612B Upper electrode 806 Grip claw 809 Grip open pin 812 Sorting box R1 1 The second ring R2 The second ring

Claims (1)

[Claims] 1. A vertical mounting plate of a machine stand, a wire rod feed-out guide device provided so as to be fed out in parallel with the vertical mount plate, and a wire rod feed-out guide device which is positioned immediately in front of the wire rod feed-out guide device and which moves back and forth to the vertical mount plate. A ring cutting device which is provided so as to be possible, a ring forming device which is provided next to the ring cutting device and which is formed into an annular shape in a substantially vertical plane, and a radiation which is provided on the machine base so as to be rotatable about a horizontal axis and axially movable A carrier having arms with equal angles in direction, an intermittent drive indexing means for the carrier, a cutting ring gripping device provided on each arm of the carrier, and a means for opening and closing the cutting ring gripping device, A cutting ring end welding means provided in the conveyance path of the carrier, a welding part annealing means provided next to the cutting ring end welding means in the carrier path of the carrier, and a carrier path of the carrier Next to the weld annealing means in Cutting ring discharge means provided,
A ring processing apparatus comprising drive control means for each of the above elements, which conveys and discharges a process of welding and annealing a cutting ring after ring molding while gripping.