JPH0833925A - Method and equipment for automatic bending - Google Patents

Abstract

PURPOSE:To automatically and continuously achieve the feeding, the size cutting, the machining and the bending of a work by bending a straight stock held by a chucking device through the advancement and refraction of a moving table, the rotation of the chucking device and the operation of a bending device. CONSTITUTION:When a moving table 6 is advanced to the prescribed dimension by an advancing/retracting mechanism part, and a coil W1 is pulled out of a straightening device 5, the coil W1 is cut by a cutting device. A spindle stock 10 is turned by 90 deg. with the axis of the moving table 6 as the turning axis, the straight stock is moved to a forming line C... while being held by a chucking device 11, and the end machining is achieved by a working machine 21 by rotating the chucking device 11 of the spindle stock 10. The moving table 6 is advanced, and the part to be bent is inserted in a bending device 4, held by a bending die and a tightening die, and bent to obtain the bent wire of the desired shape through the multiple stage advancing rotation of the chucking device 11, the integrated rotation of the bending die and the tightening die, and the advancement/refraction of a press die.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for automatically forming and bending a material to be processed supplied in the shape of a coil of semi-infinite length, which is automatically and sequentially cut to a predetermined size, cut and bent. It concerns processing machines.

[0002]

2. Description of the Related Art Conventionally, the manufacturing of rod-shaped materials to be processed such as multi-stage bent metal pipes and metal rods used in automobiles, various machines, electric equipment, etc. For example, coil material w1 such as a metal tube, metal rod, etc., which is formed into a continuous body for a considerable length, or a linear metal tube of 4 to 5 m, a linear material such as a metal rod, is cut to a certain size, and then the linear material w2 is formed. It was bending.

For example, as shown in FIG. 10, a wire rod forming device a straightens a coil material w1 and a cutting device b cuts and forms a predetermined length of a predetermined number of linear members w2 into a transport box. After being stored in c, the linear material w2 of a fixed size is carried into the supply part e of the bender d by the transport box c, and the linear material w2 is attached from the supply part e to the chuck device f of the bender d. Due to the forward rotation motion, the bending portion of the linear material w2 having its tip sandwiched by the driving bending portion g is subjected to multi-stage bending processing into a desired shape.

As a result, depending on the length of the linear material w2, it is necessary to set up the supply portion e of the linear material w2 including the wire forming device a to the transport box c and the like. It is impossible to perform automatic continuous bending such as unmanned operation at night due to the need of personnel, and when the raw material of the linear material w2 is a fixed length linear material instead of the coil material w1, the cutting device b Alternatively, there is a drawback that the above-mentioned drawbacks are doubled by requiring a process of supplying a large number of standard length linear materials to the supply part e and the like, and further, when the standard length linear material is cut into the linear material w2, a waste material which is not sufficient is generated. Was.

Further, in the above-described forming, cutting and bending method of the linear material w2 from the coil material w1, the linear material w2 cannot be straightened straight during the linear forming processing, and the strain remains or the shearing force at the time of cutting. Even if all the linear members w2 have strains in the same direction or have cut surfaces in the same direction at the time of molding and cutting, in order to store the strains randomly in the transport box c,
As shown in FIG. 11, these directions are not always the same, and in the subsequent supply to the bender d, since the transfer box c is simply transferred to the supply section e of the bender d, the strain direction, etc. The result is that the uneven straight material w2 is bent by the bender d, and there is a drawback that unevenness occurs among many bent products.

Further, since the bent wire w3 obtained by bending the straight wire w2 with the bender d is an intermediate member used in various devices, it is joined to one end, both ends or the intermediate portion of the bent wire w3. It is necessary to perform a terminal processing step such as applying various work parts such as members or functional members. Conventionally, after bending the linear material w2, the bending wire material w3 is subjected to post-processing such as cutting, plastic deformation and welding. .

In such post-processing work, when the bending shape of the bending wire rod w3 is in a plane, the bending wire rod w3 can be fixed three-dimensionally or three-dimensionally even if the bending wire rod w3 can be fixed in the post-processing. The bending wire w3 is difficult to fix and it is difficult to determine an accurate posture.Because the post-processing points for the bending wire w3 are different in the three-dimensional direction depending on the bending form, the post-processing work is extremely difficult and the efficiency is inevitably reduced. Was there.

Further, in both of the above-mentioned bending work and post-working work, the intermediate work of transferring the bending wire w3 bent by the bender d to the post-working process is required. This is a factor that increases the inability to perform bending work, and has the drawback of further increasing the variation among many products.

[0009]

DISCLOSURE OF THE INVENTION The present invention does not provide an automatic forming bending method and a processing machine for automatically and continuously supplying a material to be processed, slicing, end cutting and bending. It is what

[0010]

SUMMARY OF THE INVENTION The present invention is based on the above-mentioned prior art, in which there is no connection between a supply unit for a linear material having a predetermined size as a material to be processed, a bending bender, and a processing machine. In view of the problem that continuous automatic operation is not possible, a drive bending device and a straightening device are provided respectively on the front and rear parts of a base which is provided with a movable table having a chuck device so as to move back and forth, and a front and rear part of the straightening device is provided. The chuck device is provided with a chuck, a cutting device, and a feeder, and a processing machine is provided on the side of the base. By grasping and pulling out the coil material, re-adjusting the tension of the coil material and cutting it to a predetermined size, it is possible to move the moving table forward and backward, swing the chuck device, operate the processing machine, rotate the chuck device and operate the drive bending device. Remains gripped by the chuck device, in the manner to produce a terminal and bending the bending wire is obtained by solving cents above problems.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is an automatic forming / bending machine according to the present invention,
On the base 3 of the NC bender 2 which is numerically controlled, a drive bending device 4 for bending the linear material W2 is provided on the tip side of the bending line A, and the coil material W1 is provided on the base side of the bending line A. A straightening device 5 for insertion is installed.

In the bending line A of the base 3, 6 is
A moving table that moves back and forth between the drive bending device 4 and the straightening device 5, and the moving table 6 is a guide portion 7 installed on the base 3.
The guide part 7 is composed of a pair of slide rails, and an advancing / retreating mechanism part 8 provided with a feed screw rotated by a servomotor or the like is installed in the base 3 and the moving table 6 is movable. It reciprocates between the drive bending device 4 and the straightening device 5, and can be stopped freely at any one position or a plurality of positions during the reciprocating motion.

A headstock 10 is mounted on a movable table 6 of a bender 2 which moves back and forth on the bending line A so as to be pivotally movable via a pivot 9 and to be stopped midway during the pivoting, and the tip of the headstock 10 is mounted. The chuck device 11 attached to the above is configured to be rotatable by driving means (not shown) such as a servo motor.

The chuck device 11 attached to the headstock 10 of the bender 2 can hold the tip of the straight-line material W2, which has protruded forward from the straight-line straightening device 5 and has not yet been cut to a fixed size, and also the tip of the coil material W1. Alternatively, the headstock 10 and the chuck device 11 may be allowed to project through.

Further, in the drive bending device 4, the bending die 12 serving as a wire receiving die for receiving the linear material W2 rotatable on a horizontal plane including the bending line A at the front part of the base 3, and the bending die. Clamping dies 13 that are integrally rotated with the bending dies 12 and that come into contact with and separate from the bending dies 12 are respectively arranged, and the pressure dies 14 that are adjacent to the clamping dies 13 and press and hold the linear material W2 are bent in the bending line A direction. It is installed so that it can move back and forth.

Next, the straightening device 5 provided on the rear portion of the base 3 of the base 3 is arranged on the bending line A, and a coil having a semi-infinite length is provided on the starting end side of the straightening device 5 on substantially the same line. The straight line straightening device 5 is provided with the supply line B for the material W1.
A feeder 15 for the coil material W1 is installed on the rear side of the coil at predetermined intervals.

As a concrete structure of the straightening device 5, a first roller group 17 having a large number of rollers facing each other is provided above and below the feeder 15 side of the case 16, and right and left in front of the first roller group 17. A second roller group 18 in which a large number of rollers are arranged opposite to each other is provided, and a cutting device 20 having a chuck 19 is installed in front of the straightening device 5.

As for the positions of the chuck 19 and the cutting device 20 with respect to the straightening device 5, the tip of the coil material W1 inserted through the straightening device 5 can be cut so that the tip of the coil material W1 projects forward from the chuck 19 and the bender 2 It suffices if it can be gripped by the chuck device 11 attached to the headstock 10 of, for example, while providing a slight gap between the chuck 19 and the cutting device 20,
A space for allowing the tip of the chuck device 11 to enter is provided at the insertion portion of the coil material W1 in the cutting device 20, or the bender 2
The chuck device 11 and the chuck 19 of the cutting device 20 are temporarily interlocked with each other, and immediately before cutting, the chuck 19 is operated to move interlockingly with the coil material W1 and the action of a spring (not shown) after cutting. Alternatively, the straightening device 5 may be urged to return.

Further, the straightening device 5 is not limited to the above-mentioned structure, and may have any structure as long as it can straighten the coil material W1. As will be described later, the chuck device 11 of the headstock 10 serves to coil the coil. By pulling the material W1 for the required length, a slight tensile plastic deformation is imparted and the material W1 is realigned.

Further, between the drive bending device 4 and the straightening device 5, a single or a plurality of forming processing lines C, C1 ... Are provided in a direction orthogonal to the bending processing line A, and are adjacent to the base 3 of the bender 2 or at predetermined intervals. One or more processing machines 21, 21a separated from each other ...
Is installed.

As the above-mentioned processing machines 21, 21a, etc., the processing is performed at the end portion of the linear material W2 or the intermediate portion which is the straight portion corresponding to the non-bending portion of the bent bending wire material W3. As an example of the type of forming process, there is a process of removing or not removing the material from the linear material W2 that has been cut to a certain size, or an additional process such as cutting, pressing, attaching a bonding member or a functional member, and chamfering. , One or more types of processing such as polishing (hereinafter referred to as terminal processing).
I do.

Next, the automatic forming bending method according to the present invention will be described. In the activated state, the coil material W1 having a semi-infinite length is pulled out from the feeder 15 and the first and second roller groups 17 in the straightening device 5 are provided. , 18 is straightened and straightened, and the straightened straight material W2 is inserted through the straightening device 5 and the chuck 19 and protrudes forward.

At this time, the movable table 6 of the bender 2 is located slightly on the front side, the chuck 19 of the straightening device 5 is in an open state, and the chuck device 11 on the movable table 6 which has been moved backwards.
Holds the tip of the coil material W1 straightened before cutting to a certain size.

Next, when the movable table 6 is advanced to a predetermined position by the advancing / retreating mechanism portion 8 and the coil material W1 having a predetermined size is pulled out from the straightening device 5, the cutting device 20 causes the coil material W1 to move.
Is cut, and the tip of the coil material W1 projects forward from the chuck 19 during such cutting.

Then, the headstock 10 is turned 90 degrees by using the pivot 9 of the moving table 6 as a turning axis, and the linear member W2 is moved to the forming lines C, C1 ... While being held by the chuck device 11, as required. In accordance with the above, the chuck device 11 of the headstock 10 is rotated, and the linear machines W2 are end-processed by the processing machines 21, 21a.

When the end machining is two or more, the movable table 6 is moved back and forth on the bending line A, and the end machining is sequentially performed on the forming lines C, C1 ... By turning 90 degrees in the same direction
The straight member W so that the tip of the
2 is moved to the bending line A.

After the end processing is completed, the movable table 6 is moved forward so that the bending processing portion, which is the tip of the linear member W2, is inserted into the drive bending device 4, and is clamped by the bending die 12 and the tightening die 13 to move back and forth. A bending wire W3 having a desired shape is bent by the multistage forward rotation operation of the chuck device 11 by the mechanism portion 8 and the servo motor, the integral rotation of the bending die 12 and the tightening die 13, and the forward / backward movement of the pressure die 14.

At the completion of this bending process, the headstock 10 is rotated 180 degrees and the movable table 6 is retracted so that the chuck device 11 is oriented in the direction of the straightening device 5, and the chucking device 11 is used to straighten the device. 5. The tip end of the coil material W1 protruding from 5 is clamped, the operation state is returned to the above-mentioned activated state, and this operation state is repeated, and a large number of bent wire rods W3 are continuously and automatically manufactured from the coil material W1.

The procedure for turning the headstock 10 by 90 degrees and then sliding it in the direction of the bending line A at the time of terminal processing has been described. However, the turning angle of the headstock 10 is changed to 1
It is also possible to stop turning a plurality of times between 80 degrees to perform a plurality of terminal processes.

After pulling out the coil material W1 from the straightening device 5, the chucking device 11 is once released to move the movable table 6 to the base end side so that the tip of the coil material W1 is moved to the headstock 10. If it is made to penetrate, it is also possible to perform end processing of both ends of the linear member W2 by the processing machines 21, 21a installed on both sides of the base 3.

[0031]

In summary, according to the present invention, the coil material W1 mounted on the feeder 15 is inserted into the straightening device 5 and the moving table 6 is moved back and forth to grasp the tip end of the coil material W1 with the chuck device 11 to straighten it. Since the coil material W1 is pulled out from the straightening device 5 and the coil material W1 is tension-rearranged and cut into a predetermined size, the movable base 6 is automatically advanced and retracted, so that the linear linear material W2, which is a workpiece, is automatically processed. Can be supplied to the drive bending device 4 of the bender 2 and the processing machines 21, 21a.

Further, the movable table 6 is moved back and forth and the chuck device 11 is used.
The linear member W2 gripped by the chuck device 11 by the turning motion of the
Are arranged on the processing machines 21, 21a ... And processed at the end portion or the intermediate portion of the linear material W2.
Continuous operation of the chuck device 11 that supplies the processing machine 21, 21a
It is possible to continuously and automatically perform terminal processing etc. in collaboration with.

The tip of the linear member W2 processed while being gripped by the chuck device 11 is arranged on the drive bending device 4 by the advancing / retreating movement of the moving table 6 and the pivoting movement of the chuck device 11, and at the same time, the moving table 6 is moved. Since the linear material W2 gripped by the chuck device 11 is bent by the forward / backward movement, the rotation of the chuck device 11 and the operation of the driving bending device 4, the linear material W2 that is automatically supplied and end-processed is processed. Thus, the bending operation can be continuously and automatically performed in cooperation with the driving bending apparatus 4 by the continuous operation of the chuck device 11 that has performed a series of supply and end processing.

Therefore, from the drawing process of the coil material W1 to the bending process by the driving bending device 4, the chuck device is used.
If the total length of the semi-infinitely long coil material W1 to be mounted on the feeder 15 is equal to or longer than the total length for forming and bending at night, the number of predetermined dimensions can be increased by unmanned operation at night. It is possible to manufacture a bent wire rod W3 that has been subjected to the forming bending process, and to perform the terminal process or the like before the bending process to perform the terminal process or the like while gripping the linear material W2 with the chuck device 11, It is possible to easily fix the position and posture of the straight member W2 before the original bending process.

Furthermore, since the linear member W2 is constantly gripped by the chuck device 11 during the straightening and cutting of the coil member W1, the end processing of the linear member W2, and the bending process, the direction of the cut linear member W2 is It can be supplied to the terminal process and bending process of the subsequent process without changing its posture,
Since the strain direction and the cut surface generated due to various factors can be maintained in the same state even at the end and during bending, it is possible to obtain a uniform wire in all the bent wire rods W3.

Further, a drive bending device 4 and a straightening device 5 are provided on the front part and the rear part of the base 3, respectively, and the base 3
A movable table 6 having a chuck device 11 is provided to be movable back and forth, and a chuck 19 and a cutting device are provided in front of the straightening device 5.
20 is provided and the feeder 15 is provided at the rear of the straightening device 5.
Is provided, and the processing machines 21, 21a ... Are provided on the side of the base 3, and the chuck device 11 provided on the moving table 6 can be swung and stopped during the swiveling, so that the drive bending device 4,
When the linear material W2 or the like is transferred between the linear straightening device 5 and the processing machines 21, 21a, etc., one chuck device 11 can cope with the linear material W2, and the posture of the linear material W2 can be consistent as described above. Can be made compact by integrating
Further, it is possible to easily install the processing machines 21, 21a ... Which perform the terminal processing in the vendor 2, and further, it is possible to easily perform the numerical value setting and the setup change between various constituent devices.

Further, since a plurality of processing machines 21, 21a, ... Are installed, when two or more types of processing are required for terminal processing, automatic continuous operation is possible by moving the moving table 6 or the like. That is, the practical effect is extremely great.

[Brief description of drawings]

FIG. 1 is a simplified front view and a plan view of an automatic forming / bending machine according to the present invention in a startup state.

2A and 2B are a simplified front view and a plan view of the automatic forming / bending machine when the chuck device pulls out the wire.

FIG. 3 is a simplified plan view of the automatic forming / bending machine in a two-step forming state.

FIG. 4 is a simplified front view and a plan view of the automatic forming / bending machine when shifting to a bending state.

5A and 5B are a simplified front view and a plan view of the automatic forming bending machine in a bending state.

FIG. 6 is a simplified plan view of the automatic forming / bending machine upon completion of bending.

7A and 7B are a simplified front view and a plan view of the automatic forming / bending machine when returning to the starting state.

FIG. 8 is a perspective view showing two types of bending wire rods that have been formed and bent.

FIG. 9 is a perspective view showing another two types of bending wire rods that have been formed and bent.

FIG. 10 is a diagram showing a conventional technique.

11A and 11B are a front view and a side view showing a straight material that has been molded and cut by a conventional wire molding machine.

[Explanation of symbols]

 3 Base 4 Drive bending device 5 Straightening device 6 Moving table 11 Chuck device 15 Feeder 19 Chuck 20 Cutting device 21, 21a… Processing machine W1 Coil material W2 Straight material

Claims (3)

[Claims] 1. A coil material mounted on a feeder is inserted into a straightening device, a movable table is moved forward and backward, a tip of the coil material is gripped by a chuck device, and the coiling material is pulled out from the straightening device to straighten the coil material. At the same time, it is cut into a predetermined size, and the linear material gripped by the chuck device is swung by the advancing and retreating movement of the moving table and the swiveling motion of the chuck device to be placed on the processing machine.
The end of the linear material is processed into the end portion or the intermediate portion, and then, the tip of the linear material processed while being gripped by the chuck device is arranged in the drive bending device by the advancing / retracting movement of the moving table and the swinging motion of the chuck device. An automatic forming / bending process characterized in that a linear material gripped by a chuck device is bent by moving a moving table forward / backward, rotating a chuck device automatically and operating a drive bending device. 2. A drive bending device and a straightening device are provided on the front and rear parts of the base, respectively, and a movable table having a chuck device is provided on the base so as to be movable back and forth, and a chuck is provided on the front part of the straightening device. A cutting device is provided, a feeder is provided at the rear of the straightening device, a processing machine is provided on the side of the base, and the chuck device provided on the movable table can be swung freely and can be stopped midway. The automatic forming and bending machine characterized by the above. 3. The automatic forming bending machine according to claim 2, wherein a plurality of processing machines are installed.