WO2004067203A1

WO2004067203A1 - Slender body molding device

Info

Publication number: WO2004067203A1
Application number: PCT/JP2004/000726
Authority: WO
Inventors: Ryoichi Omae; Katsunari Nagayoshi
Original assignee: Ts Precision Co., Ltd.
Priority date: 2003-01-30
Filing date: 2004-01-28
Publication date: 2004-08-12
Also published as: EP1602420A4; JP4804920B2; JPWO2004067203A1; EP1602420A1

Abstract

A slender body molding device, comprising a press working machine (28) fixed to a table (22) movable in the longitudinal direction of a slender body (21) and a moving device (43) moving the table (22). Even if the amount of the slender body (21) pressingly returned by burrs is varied due to a change in the type of the slender body (21), a distance between a position where the slender body (21) is worked (bored) by the press working machine (28) and a position where the slender body is cut by a cutting machine (49) can be adjusted to a design value by integrally moving the table (22) and the press working machine (28) by the moving device (43) by the amount of the change.

Description

Description Slender molding equipment <Technical field>

The present invention relates to a slender body forming apparatus for cutting a piece by cutting the slender body one after another while feeding the slender body in a longitudinal direction, and bending the cut piece into a predetermined shape.

Conventionally, as an apparatus for forming an elongated body, for example, an apparatus described in Japanese Utility Model Application Laid-Open No. 11-09316 is disclosed. Japanese Patent Application Laid-Open Publication No. H10-202,009 is known. Here, the molding apparatus described in Japanese Utility Model Laid-Open Publication No. 1-109316 includes a feeder that intermittently sends out elongated bodies at a constant pitch in the longitudinal direction, and a feeder that is installed downstream from the feeder. A partial processing machine (press processing machine) that performs partial processing (two hole drilling) on the body, and is installed downstream from the partial processing machine, and cuts the elongated body substantially in the width direction. A cutting machine that cuts out the cut pieces having substantially the same length as the fixed pitch, and a bending machine that is installed downstream of the cut machine and bends the cut pieces into a predetermined shape. The machine and the bending machine are individually fixed at a predetermined distance to the same frame.

However, in such a conventional elongated body forming apparatus, there is a problem that the switching operation performed according to the type change of the elongated body is troublesome and takes a long time as described below. .

The first reason is that when the slender body is cut into cut pieces by a cutting machine, burrs are generated at the cutting position, but the slender bodies accumulate on the supply side due to the accumulation of burrs generated on each of the cut pieces. Only pushed back. Here, since the size of the burr differs depending on the type of the elongated body, as shown in FIG. 9A, in the previous elongated body 11, a rectangular processing hole 12 and a cutting position 13 by a press machine were used. Even if the distance L1 between them is adjusted to the design value, in the case of the present elongated body 11 of a different type, as shown in FIG. The distance L2 between the processing hole 12 and the cutting position 13 is different from the design value. In such a case, as shown in FIG. 10, the drilling dieset 15 of the press machine 14 is moved in the longitudinal direction of the elongated body 11 by rotating the adjusting screw 16 so that the distance L2 becomes a design value. However, it is technically very difficult to move the die set 15 by the change (L2-L1) from the previous time without shifting the die set 15 in the width direction of the slender body 11, and the work is difficult. It was troublesome and it took a long time

The second reason is that when the cut piece is bent into a predetermined shape by pressing it against the die with the bending tool of the bending slide unit, the die of the bending machine is changed according to the change in the type of slender body. Although it is necessary to replace the die with one that can handle slender bodies, such a die has conventionally been detachably attached to the front wall of the frame of a bending machine with multiple bolts. After removing these bolts, the die needs to be replaced and then bolted. In addition, the mounting position of the die had to be high-precision, which made the work cumbersome and required a long time.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an apparatus for forming an elongated body, which can quickly and easily perform a switching operation according to a change in the type of the elongated body.

The first purpose is to feed the elongated body intermittently at a constant pitch in the longitudinal direction, and a part that is installed downstream of the feeder and performs partial processing on the elongated body. A processing machine, a cutting machine that is installed downstream of the partial processing machine, and cuts the elongated body in a substantially width direction to cut out the cut pieces having the constant pitch and substantially the same length; and a downstream side of the cutting machine. And a bending machine for bending the cut piece into a predetermined shape, wherein the partial processing machine is fixed to a table movable in the longitudinal direction of the elongated body, and the table is moved. This can be achieved by providing a moving device.

Secondly, a feeder that feeds the elongated body intermittently at a constant pitch in the longitudinal direction; A partial processing machine installed downstream of the feeder and partially processing the elongated body, and a partial processing machine installed downstream of the partial processing machine and cutting the elongated body substantially in the width direction. In an apparatus for forming a slender body, the cutting apparatus includes a cutting machine that cuts out a cut piece having a constant pitch and substantially the same length, and a bending machine that is installed downstream of the cut machine and that bends the cut piece into a predetermined shape. A processing machine comprising: a pair of openable and closable gripping claws whose front portions project forward from a front wall of a frame of the bending processing machine; and When the gripping claws are closed, an opening / closing device that grips and locks the die that is in contact with the front wall of the frame with the gripping claws, and is supported by the frame so as to surround the die, and the bending tool is attached to the die through the cut piece. I will push them sequentially It can be achieved Ri by to having a plurality of bending slides Interview knit bending the cut pieces.

First, in the present invention, since the partial processing machine is fixed to a table movable in the longitudinal direction of the elongated body and a moving device for moving the table is provided, the elongated body is changed by changing the type of the elongated body. Even if the pushed back amount changes, the moving device moves the partial processing machine together with the table and moves it in the longitudinal direction of the elongated body by an amount corresponding to the change in the amount. The distance from the cutting position can be adjusted to the design value, and the switching operation can be performed quickly and easily. In addition, the above-described configuration makes it easy to change the size of the above-mentioned burrs with the passage of time, or when it is necessary to shift the mounting position of the processing tool of the partial processing machine. Can be dealt with. A bending claw, a front part protruding forward from a front wall of a frame of the bending processing machine; a pair of openable and closable gripping claws; and a bending claw installed in the frame for applying an opening and closing driving force to the gripping claw. When the gripping claws are closed, an opening / closing device that grips and locks the die that is in contact with the front wall of the frame with the gripping claws, and is supported by the frame so as to surround the die, and cuts the bending tool. Since it has a plurality of bending slide units that bend the cut piece by sequentially pressing it to the die through the piece, when the type of the elongated body is changed, the gripper is opened by the opening / closing device to open the die. After releasing from the gripping by the nail, the die corresponding to this slender body is placed on the front wall of the frame. The die can be replaced simply by closing and grasping and locking the gripping claws while making contact, thereby making the switching work quick and easy. Moreover, at this time, only the front part of the gripping claws protrudes from the front wall of the frame, and the rear part of the gripping claws and the opening / closing device are arranged in the frame. It can be used effectively for installing ride units.

Furthermore, if the cutting machine is arranged close to the bending position of the bending machine, it is possible to reduce the amount of pushing back by the burrs described above, and especially when the cut piece is cut obliquely in the width direction. However, it is possible to effectively suppress the situation of getting under or climbing over an adjacent cut piece.

Also, if the feeder is also fixed to the table, when the table is moved, the slender body is also moved integrally by the feeder, so that the already partially processed part located between the partial processing machine and the cutting machine It is possible to eliminate the disposal of the slender body, thereby improving the product yield.

Further, in the present application, each bending slide unit comprises a slider capable of approaching / separating from the die, a bending tool attached to the tip of the slider, and a contact / separation device for approaching / separating the slider from / to the die; At the distal end of the slider, a lock member having a lock engaging portion bent at one end and having an L-shaped cross section at the distal end is formed so as to be movably accommodated, and a base end portion is formed at the accommodation hole. A bending locking portion having a L-shaped cross-section that can be locked to the locking locking portion and is bent to the other side is provided at a base end of the bending tool into which the insertion hole is inserted. A window is formed, and a groove is formed on one side of the bending tool at a base end thereof, thereby forming a protrusion protruding toward one side at a base end of the bending tool, and a bottom surface of the groove is formed. Is located on the tip side of the window. Insert the base end of the bending tool into the storage hole while inserting the protruding part into the window, slide the bending tool to the other side, and slide the bending tool parallel to the other side. The stopper is locked, and then the bending member is attached to the slider by moving the lock member to the rear side of the storage hole by the moving mechanism until at least a part of the protruding portion reaches the rear side of the window. May be.

With the above configuration, the bending slide unit can be used to replace the die. The bending tool can be easily and quickly replaced. Brief description of drawings>

FIG. 1 is a schematic front view showing an embodiment of the present invention.

FIG. 2 is a plan view of the opening / closing device holding the die.

FIG. 3 is a perspective view of the opening / closing device holding the die.

FIG. 4 is a plan sectional view of the opening / closing mechanism.

FIG. 5 is a perspective view of the bending slide cut.

FIG. 6 is a partially broken plan view of a connecting portion of the slider and the bending tool.

FIG. 7 is a sectional view taken along the line VII-VII of FIG.

FIG. 8 is a schematic front view similar to FIG. 1 showing another embodiment of the present invention.

9A and 9B are plan views of the slender body in which a processing hole is formed.

FIG. 10 is a schematic front view of a conventional press working machine.

In the figure, 20: forming device, 21: slender body, 22: table, 23: one feeder, 28: partial processing machine, 43: moving means, 46: bending machine, 47: frame, 48: front wall, 49 … Cutting machine, 54… Cut piece, 56… Opening / closing means, 67… Grip pawl, 72… Bending slide unit, 84 ··· Slider, 85… Storage hole, 86 ··· Lock member, 87… Lock locking , 92 · · · bending tool, 93 · · · contact and separation means, 94 · · · bending and locking section, 97 · · · window, 98 · groove, 99 · protruding part, 110 · moving mechanism.

BEST MODE FOR CARRYING OUT THE INVENTION>

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

In FIG. 1, reference numeral 21 denotes a metal elongated body composed of a band-shaped plate material and a linear body as a workpiece to be machined. The elongated body 21 extends horizontally from one side to the other side, and is formed by a molding machine 20. After being cut into cut pieces of a certain length, the pieces are bent and turned into products. Reference numeral 22 denotes a horizontal rectangular plate-shaped table installed directly below the elongated body 21. The elongated body 21 is provided on the upper surface of one side of the table 22 in the longitudinal direction, here, from one side to the other side. A feeder 23 that feeds intermittently at a constant pitch is fixed. The feeder 23 is located on the main body 24 and above the elongated body 21 supported by the main body 24. An upper roller 25 and a lower roller 26 supported by the main body 24 and positioned below the elongated body 21. At least one of the upper and lower rollers 25 and 26 is rotated by a rotating device (not shown). It is driven and rotated as needed. When the upper and lower rollers 25 and 26 are intermittently rotated by a predetermined amount by a rotating device while the upper and lower rollers 25 and 26 are sandwiching the elongated body 21 from above and below, the elongated body 21 becomes These upper and lower rollers 25 and 26 intermittently feed the paper from one side toward the other side at a constant pitch.

On the downstream side of the feeder 23, that is, on the other side, partial processing is performed on the elongated body 21. Here, for example, a rectangular processing as shown in FIGS. 9A and 9B is performed on the elongated body 21. A press machine 28 as a partial machine for forming the hole 12 is provided, and the press machine 28 is fixed to the upper surface on the other side of the table 22. In addition, as the above-mentioned partial addition, in addition to the punching process such as punching as in this embodiment, an unnecessary portion is cut out to remove unnecessary portions, and irregularities are formed on a partial surface of the elongated body 21. A stamping process and the like can be given. The press machine 28 includes a main body 29 and a die set 30 detachably attached to the main body 29. The die set 30 is erected on a die holder 31 on which a die is mounted and on a die holder 31. A plurality of guide posts 32, and a punch holder 34 having a punch 33 attached to the lower surface, which can be raised and lowered by slidably engaging the guide posts 32 immediately above the die holder 31. I have.

Then, the punch holder 34 is lowered by an elevating device built in the main body 29, and the punch 33 is inserted into the die, so that the processing hole 12 having the same shape as the cross-sectional shape of the punch 33 is formed in the elongated body 21. I have to. Contrary to the above, the die holder on which the die is mounted is located above the elongated body 21 and the punch holder on which the punch is mounted is located below the elongated body 21, and the punch holder is raised to form the elongated body 21. The hole 12 may be formed. Reference numeral 35 denotes a guide plate that is provided between the feeder 23 and the press machine 28 and guides the elongated body 21 between the feeder 23 and the press machine 28 while supporting it from below.

Immediately below the table 22, both ends are rotatably supported by bearings 38, and a screw shaft 39 composed of a ball screw extending parallel to the elongated body 21 is provided. The shaft 39 is screwed into a screw block 40 fixed to the lower surface of the table 22. Reference numeral 41 denotes a drive unit connected to one end of the screw shaft 39. The drive unit 41 applies a rotational driving force to the screw shaft 39 based on a control signal from the control unit 42, and the table 22, the feeder 23, The press machine 28 is moved integrally in the longitudinal direction of the elongated body 21. Here, as the drive unit 41 described above, for example, a servo motor or a stepping motor can be used. The screw shaft 39, the screw block 40, the driving unit 41, and the control unit 42 as a whole include a moving device 43 for moving the table 22 movable in the longitudinal direction of the elongated body 21 together with the feeder 23 and the press machine 28. Is composed. Here, a servo cylinder or the like may be used as the moving device.

Reference numeral 46 denotes a bending machine which is installed downstream of the press machine 28, here on the other side, and is generally called a multi-forming machine. A frame 47 of the bending machine 46 extends vertically at a front end. It has a front wall 48, and a cutting machine 49 is mounted on the front of the front wall 48. Here, the cutting machine 49 is disposed close to the bending position of the bending machine 46, that is, closer to the upstream side (one side) than the installation position of the die 50. As a result, the bending machine 46 becomes a cutting machine 49. It will be located on the downstream side (other side). The cutting machine 49 cuts the elongated body 21 substantially in the width direction each time the feeding of the elongated body 21 by the feeder 23 stops, and the cutting pitch is substantially equal to the delivery pitch (constant pitch) of the elongated body 21. Cut pieces 54 one after another. A screw shaft 52 extending parallel to the elongated body 21 is rotatably supported on a front wall 48 directly below the cutting machine 49 via a bearing 51, and the screw shaft 52 is fixed to a lower end of the cutting machine 49. It is screwed into the screw block 53. As a result, by rotating the screw block 53 and moving the cutter 49 in the longitudinal direction of the elongated body 21, the cutting position with respect to the elongated body 21 can be adjusted easily and easily.

Referring to FIGS. 1, 2, 3, and 4, the opening / closing device 56 installed in the frame 47 by attaching the front end to the rear surface of the front wall 48 will be described. The opening / closing device 56 includes a pair of opening / closing mechanisms 57 separated in the longitudinal direction of the elongated body 21. Each opening / closing mechanism 57 is supported by the main body block 58, the main body block 58 movably in the front-rear direction, and a transmission port 59 extending in the front-rear direction, and an inner end is connected to a rear end of the transmission port 59. When done In both cases, a center portion is swingably supported by a main body block 58 via a pin 60 and applies a driving force to a swing arm 61 extending substantially parallel to the elongated body 21 and an outer end of the swing arm 61. As a result, a drive mechanism (not shown) for swinging the swing arm 61 extends substantially parallel to the transmission port 59 outside the transmission port 59, and the rear end of the main body is connected via a pin 62. A swing link 63 is swingably connected to the block 58.

Reference numeral 67 denotes a pair (here, one pair but may be a plurality of pairs). These are openable / closable gripping claws. The front end of the swing link 63 is rotatably connected to the outer end of the swing link 63 via a pin 69. The above-described gripping claw 67 has a front portion only protruding forward from a front wall 48 of the bending machine 46, and a rear portion thereof is located in the frame 47. Here, it is conceivable to install a plurality of fixing devices for positioning and fixing the die 50 to the front wall 48 on the front surface of the front wall 48. In this case, the fixing device occupies the front surface of the front wall 48 to some extent. As a result, the installation area of the bending slide unit to be described later is reduced, and complicated bending is difficult. On the other hand, as in this embodiment, only the front part of the gripping claws 67 is projected forward from the front wall 48, and the rear part of the gripping claws 67 and the opening / closing device 56 for opening and closing the gripping claws 67 are housed in the frame 47 內. By doing so, the front surface of the front wall 48 can be effectively used for installing a plurality of bending slide units, thereby enabling complicated bending.

When the transmission rod 59 is moved forward by transmitting the driving force from the driving mechanism to the transmission port 59 via the swing arm 61, the gripping claws 67 move outward with the pin 69 as a center. As a result, these gripping claws 67 are released to release the die 50 pressed against the front wall 48 from gripping. On the other hand, when the transmission port 59 is moved rearward by the driving force from the drive mechanism, the gripping claws 67 swing inward about the pins 69, whereby the gripping claws 67 are closed and the die is closed. The die 50 is gripped from both sides while being pressed against the front wall 48, and the die 50 is positioned and fixed at a predetermined bending position with high precision. When the pair of gripping claws 67 are provided with an opening / closing drive force from the opening / closing device 56 to close the gripping claws 67, the die 50 contacting the front wall 48 of the frame 47 is brought into contact with the gripping claws 67. Is gripped and locked. The guide plates 70 and 71 are provided between the press machine 28 and the cutting machine 49 and between the cutting machine 49 and the die 50 of the bending machine 46, respectively. And 71 guide the elongated body 21 between the press machine 28 and the cutting machine 49 and between the cutting machine 49 and the die 50 of the bending machine 46 while supporting them from below.

A plurality of bending slide units 72 arranged so as to surround the die 50 will be described with reference to FIGS. Each bending slide unit 72 is fixed to the front surface of the front wall 48 by a slide block 73. Further, a slide plate 74 is slidably supported via a slide block 73. The slide plate 74 extends substantially radially around the die 50. Reference numeral 75 denotes a cam shaft that extends through the outer end of the slide plate 74 and extends in the front-rear direction. The rear end of the cam shaft 75 is rotatably supported by the front wall 48 and is connected to a servo motor (not shown). Are linked. A push cam 76 and a return cam 77 are fixed to the front end of the cam shaft 75, and the push cam 76 and the return cam 77 are rotatably supported on the outer periphery of the push cam 76 and the return cam 77 by a slide plate 74 via a support block 78. Cam follower 79 is in rolling contact. As a result, when the servomotor operates to rotate the camshaft 75, the push cam 76, and the return cam 77, the slide plate 74 is pushed by the push cam 76 and moves so as to approach the die 50. When pushed by the return cam 77, it moves away from the die 50.

At the front end of the slide plate 74 near the die 50, a square column-shaped mounting case 82 having a recess 81 formed at the front and the front surface is fixed, and at the front of the mounting case 82, the recess 81 is formed. A rectangular plate-shaped cap 83 for closing the front opening is attached. The slide plate 74, the mounting case 82, and the cap 83 described above constitute a slider 84 which can approach and separate from the die 50 of the bending machine 46 as a whole. By closing the opening on the front side of the recess 81 with the cap 83, a storage hole 85 having an open end is formed. At the innermost portion (base end) of the storage hole 85, a substantially quadrangular prism-shaped lock member 86 is stored so as to be movable in the longitudinal direction of the slider 84. 86 has a lock engaging portion 87 having a L-shaped cross section bent at one end (in this case, the front side) at its tip.

Reference numeral 90 denotes a punch holder, and a punch 91 for applying a bending process to the cut piece 54 in cooperation with the die 50 is fixed to a tip portion of the punch holder 90. The above-mentioned punch holder 90 and punch 91 as a whole constitute a bending tool 92 which is detachably attached to the tip of the slider 84. The cam shaft 75, the push cam 76, the return cam 77, and the support block 78 The cam follower 79 and the servomotor as a whole constitute a contact / separation device 93 for moving the slider 84 toward and away from the die 50. Here, when the bending tool 92 is attached to the slider 84, its base end, here the base end of the punch holder 90, is inserted into the storage hole 85 of the slider 84. At the base end of the bending tool 92, specifically, at the base end of the punch holder 90, there is provided a bending locking portion 94 having an L-shaped cross section bent to the other side (rear side). 94 can be locked to the lock locking portion 87 of the hook member 86. The above-described bending slide unit that bends the cut piece 54 into a predetermined shape by sequentially pressing the bend tool 92 onto the die 50 via the cut piece 54, as a whole, as described above. Make up 72.

Reference numeral 97 denotes a rectangular window formed on the inner surface of one side (front side) of the storage hole 85 and penetrating the cap 83. The window 97 is located on the tip side of the lock member 86. A rectangular groove 98 extending in the longitudinal direction of the bending tool 92 and having a uniform depth is formed on one side (front side) of the bending tool 92, more specifically, at the base end of the punch holder 90. A projecting portion 99 projecting toward one side (front side) is formed at the base end of the bending tool 92, specifically, the punch holder 90. Reference numeral 100 denotes a pressing cam stored in the storage hole 85, and a spring 101 for urging the pressing cam 100 toward the front end side is interposed between the pressing cam 100 and the bottom surface of the storage hole 85. Have been. When the base end of the bending tool 92 is inserted into the storage hole 85 and attached to the slider 84, the pressing cam 100 stores the bending tool 92, more specifically, the base end of the punch holder 90 by the slope 102. The bending tool 92 is pressed against the inner side surface of the hole 85 to position the bending tool 92 in the width direction with respect to the slider 84, and to prevent displacement in the width direction. Reference numeral 105 denotes a rotating shaft having a central portion penetrating the side wall of the storage hole 85 and an inner end inserted into the lock member 86. A circular cam 106 is eccentric to the inner end of the rotating shaft 105. Fixed. The cam 106 is accommodated in the locking member 8 rectangular cam chamber 107 formed in ^6, the base end of the lever 108 is fixed to the outer end of the rotation shaft 105. As shown in FIGS. 5 and 6, when this lever 108 is swung toward the base end side of the punch holder 90, the lock member 86 is pushed by the cam 106 and moves inside the storage hole 85 to the back side. On the other hand, when swinging to the distal end side, it is pushed by the cam 106 and moves inside the storage hole 85 to the distal end opening side. The above-described rotating shaft 105, cam 106, and lever 108 as a whole constitute a moving mechanism 110 for moving the lock member 86 to the distal end side or the back side in the storage hole 85. Here, when the bending member 94 of the bending member 92 is locked by the locking member 87 of the locking member 86 and the locking member 86 moves to the back side as described above, the bending member 92 also moves to the storage hole. At this time, when at least a part of the protrusion 99 reaches the rear side of the window 97, the bending tool 92 is restricted from moving in the front-rear direction by the mounting case 82 and the cap 83. The escape from the slider 84 is prevented. Then, the bending tool 92 is pulled into the storage hole 85 until the step 109 of the punch holder 90 comes into contact with the distal end face of the mounting case 82 by the movement of the lever 108 toward the base end side. It is firmly attached to the slider 84.

Next, the operation of the embodiment of the present invention will be described.

Now, by operating the servo motor of the bending slide cut 72, the bending tool 92 sequentially approaches the die 50, and the cut pieces 54 are pressed one after another against the die 50 by the punch 91, and are bent into a predetermined shape. Suppose you have During such a bending operation, in the molding machine 20, the upper and lower rollers 25 and 26 of the feeder 23 stop rotating while holding the elongated body 21 from above and below. In the press machine 28, the punch holder 34 is lowered by the elevating device and then raised, whereby the punch 33 and the die (not shown) of the die holder 31 cooperate to form the elongated body 21. A processing hole 12 is formed. Further, the cutting machine ⁴⁹ is operated to cut the elongated body 21 substantially in the width direction at the cutting position 13 and cut out the cut pieces 54 having substantially the same length as the feed pitch of the elongated body 21. At this time, a plurality of cut pieces 54 that have been cut off abut on the guide plate 71. It is placed in the state where it was done.

When the cut piece 54 is bent into a predetermined shape as described above, the cut piece 54 that has been bent is discharged from the bending machine 46. Next, when the upper and lower rollers ₂₅ and 26 on the feeder 23 are rotated by a predetermined amount by the rotating device, the elongated body 21 is fixed from one side to the other side by the upper and lower rollers 25 and 26. The cut piece 54 located at the downstream end is sent intermittently by the pitch, and is fed into the bending position of the bending machine 46, that is, the die 50. Thereafter, the cut piece 54 is bent into a predetermined shape in the same manner as described above.

Here, when the bending process on the elongated body 21 of the above-described type is completed and the bending process is performed on the elongated body 21 of a different type (width, thickness, material, etc.), the press machine 28, the bending process is performed. In the machine 46, the die set 30, the die 50, and the bending tool 92 corresponding to the type of the slender body 21 this time are switched. In this case, first, after removing the previous slender body 21 from the molding device 20, the die set 30 is removed from the main body 29, and then the die set 30 corresponding to the present slender body 21 is attached to the main body 29. On the other hand, in the bending machine 46, a driving force is applied to the swing arm 61 of the opening / closing device 56 from the driving mechanism, and the transmission port 59 of each opening / closing mechanism 57 is moved forward. As a result, the gripping claws 67 swing outward around the pin 69, and as a result, the paired gripping claws 67 are opened to release the die 50 pressed against the front wall 48 from the gripping.

After the previous die 50 released from the gripping claws 67 in this way is carried out from the bending machine 46, the die 50 corresponding to the elongated body 21 this time is carried into the bending machine 46 and the die 50 at the bending position is removed. Press against wall 48. In this state, the drive rod moves the transmission rod 59 of each opening / closing mechanism 57 backward, and swings the pair of gripping claws 67 inward to close them. Thus, the die 50 is gripped from both sides by the gripping claws 67 and is positioned and fixed to the frame 47 of the bending machine 46. When the type of the elongated body 21 is thus changed, the die 50 is released from the gripping by releasing the gripping claws 67 by the opening / closing device 56, and then the die 50 corresponding to the elongated body 21 of this time is framed. The die 50 can be replaced simply by closing, gripping, and locking the gripping claws 67 while making contact with the front wall 48 of the 47, whereby the switching operation can be performed quickly and easily. In each bending slide Interview knit 72, by approximately a half rotation of the cam 106 is swung lever 108 distally, the projections ⁹⁹ on the distal end opening side of the accommodation hole 85 to a position overlapping with the window ⁹ 7 The lock member 86 and the bending tool 92 are moved by the cam 106. Thereafter, the bending tool 92 is inserted into the window 97 so that the protrusion 99 is inserted into the window 97, and the bottom (the front side) of the storage hole 85 located at the front end side of the window 97 until the bottom 98 comes into contact with the inner surface. To translate. Thereby, the bending engagement portion 94 of the bending tool 92 is separated from the lock engagement portion 87 of the lock member 86. Next, the bottom surface of the groove 98 is slidably contacted with the inner surface of one side (front side) of the storage hole 85 located on the distal end side of the window 97, and the bending tool 92 is inserted with the protrusion 9S inserted into the window 97. Side, and then translate it to the other side (rear side), and then play back and move to the tip side. Thus, the bending tool 92 corresponding to the previous die 50 is pulled out of the slider 84.

Next, the base end of the bending tool 92 corresponding to the die 50 this time is inserted into the storage hole 85 until the bending locking portion 94 comes into contact with the locking locking portion 87. Next, the bending tool 92 is moved to one side until the protrusion 99 is inserted into the window 97 and the bottom surface of the groove 98 comes into contact with the inner surface of one side (front side) of the storage hole 85 located on the tip side of the window 97. (Front side) Then, the bottom surface of the groove 98 is slid in contact with the inner surface of one side (front side) of the storage hole 85 located on the tip side of the window 97, and the bending tool 92 is pushed inward while the projection 99 is inserted into the window 97. Then, the base end of the bending tool 92 is further inserted into the storage hole 85. Next, the bending tool 92 is moved in parallel to the other side (rear side) to lock the bending locking portion 94 to the locking locking portion 87, and then the lever 108 is swung to the proximal end to substantially move the cam 106. Turn half a turn.

As a result, the locking member 86 and the bending tool 92 move to the rear side of the storage hole 85, but the movement of the locking member 86 and the bending tool 92 move at least a part of the projecting portion 99, and here the entirety is the window 97. It stops when it reaches the far side and the step 109 comes into contact with the tip surface of the mounting case 82. At this time, the bending tool 92 is firmly attached to the slider 84 with high accuracy while being positioned in the width direction by the pressing cam 100. Such a work is performed in each bending slide unit 1 and 72, and is replaced with a bending tool 92 corresponding to the die 50 this time. As described above, the bending tool 92 is moved in a crank shape, and the lever 108 is moved. By simply swinging, the bending tool 92 can be replaced. Therefore, the work can be performed easily and quickly.

Next, the slender body 21 to be formed this time is carried into the forming apparatus 20, and is passed between the upper and lower rollers 25 and 26 of the feeder 23, and the starting end thereof is located almost immediately below the punch 33 of the press machine 28. Let it. In this state, the feeder 23, the press machine 28, the cutting machine 49, and the bending machine 46 are operated in the same manner as in the molding operation described above, and the molding operation is performed on a trial basis. Here, since burrs are generated at the cut ends of the cut pieces 54 cut by the cutting machine 49, the slender body 21 is pushed back to the supply side by the accumulated amount of the burrs due to the accumulation of the paris. Since the size differs depending on the type of the elongated body 21, the distance between the processing hole 12 and the cutting position 13 differs between the previous time and the current time as described in the related art.

As described above, since the amount of the elongated body 21 pushed back is changed by changing the type of the elongated body 21, the amount of the change is detected by the above-described test molding, and then the driving unit 41 is controlled by the control signal from the control unit 42. Is operated to rotate the screw shaft 39, thereby moving the press machine 28 together with the table 22 in the longitudinal direction of the elongated body 21 by the amount of change of the pushed-back amount. Offset. In this way, by simply moving the table 22 and the press machine 28 by the moving device 43 by the amount of the change, the position between the processing (drilling) position of the elongated body 21 by the press machine 28 and the cutting position by the cutter 49 is determined. The distance can be adjusted to the design value, so that the switching operation can be performed quickly and easily.

Also, the size of the burr described above changes with time due to wear of the punch 33, die, etc., which may result in a change in the pushed back amount. It is easy to deal with the problem simply by moving the press machine 28 by the moving device 43. Furthermore, due to the relationship between the length of the cut piece 54 and the processing position of the processing hole 12, the center of action of the driving force applied to the punch holder 34 from the lifting device may be displaced from the center of the punch 33. In the past, since the position of the press processing machine 14 could not be changed, the press work had to be performed while an eccentric load was applied, which led to a shortened life of the die set 15 and a failure of the device. . However, in this embodiment, in the above-mentioned case, the center of action of the driving force is After the center of the punch 33 is made to coincide with the center, the table 22 and the press machine 28 are moved by the moving device 43 until the punch 33 reaches just above the specified working position.

Further, as described above, since the feeder 23 is fixed to the table 22 in addition to the press machine 28, when the table 22 and the press machine 28 are moved, the feeder 23 also moves as a unit. . During such movement, the rotation of the upper and lower rollers 25 and 26 of the feeder 23 is stopped, whereby the elongated body 21 is gripped by the upper and lower rollers 25 and 26, and the elongated body 21 is also integrated with the table 22. , The position of the slender body 21 with respect to the cutting machine 49 is adjusted at the same time, and the cutting position for the slender body 21 located between the cutting machine 49 and the press machine 28 is set as the designed position. be able to. As a result, the elongated body 21 that has been partially worked and located between the press machine 28 and the cutting machine 49 does not have to be discarded, thereby improving the product yield. On the other hand, when the feeder 23 is not fixed to the table 22 but is independent, when the press machine 28 is moved and the position is adjusted, the slender body 21 remains stationary. The cutting position for the elongated body 21 between the machine 28 and the cutting machine 49 remains crazy and has to be disposed of.

Further, in this embodiment, since the cutting machine 49 is arranged close to the bending position of the bending machine 46 (the installation position of the die 50) as described above, the number of cut pieces 54 existing between them is reduced. As a result, it is possible to reduce the amount pushed back by the burrs described above, and in particular, when the cut piece 54 is cut obliquely in the width direction, it may sink under the adjacent cut piece 54 or Riding situations can be effectively suppressed. When the distance between the processing center of the press machine 28 and the bending position of the bending machine 46 is adjusted in this way, the same forming operation as described above is repeated, and the cut pieces 54 are successively formed into a predetermined shape. It is bent.

Here, since the amount of pushed back by the burr is almost the same when the elongated bodies 21 are of the same type, the pushed back amount of each type of elongated body 21 is stored in the storage device 112 as shown in FIG. When there is a change in the type of the elongated body 21, the computer 113 stores it in the storage device 112 using the previous and current elongated body. In addition to reading out the pushed back amount corresponding to 21, the difference (change amount) is obtained, and a control signal corresponding to the difference is output to the driving unit 41 through the control unit 42, so that the tape 22, the press machine 28, You may move feeder 23. This makes it possible to eliminate the test molding operation described above, and to perform the switching operation more quickly and easily.

Although the present invention has been described in detail and with reference to specific embodiments, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention.

This application is based on three patent applications filed on Jan. 2003, No. 2003 (Japanese Patent Application No. 2003-21467), the contents of which are incorporated herein by reference.

As described above, according to the present invention, the switching operation performed according to the change in the type of the elongated body can be performed quickly and easily.

Claims

The scope of the claims

1. a feeder for intermittently feeding the slender body at a constant pitch in the longitudinal direction; a partial processing machine installed downstream of the feeder to partially process the slender body; A cutting machine that is installed on the downstream side and cuts out the cut pieces having the constant pitch and substantially the same length by cutting the elongated body substantially in the width direction; and a cutting machine that is installed downstream of the cutting machine to cut the cut pieces. An elongated body forming apparatus provided with a bending machine for bending into a shape, wherein the partial processing machine is fixed to a table movable in the longitudinal direction of the elongated body, and an elongate apparatus provided with a moving device for moving the table. Body molding equipment.

2. The slender body forming apparatus according to claim 1, wherein the cutting machine is arranged near a bending position of the bending machine.

3. The elongated body according to claim 1, wherein the feeder is also fixed to the table.

4. A feeder for intermittently feeding the slender body at a constant pitch in the longitudinal direction; a partial processing machine installed downstream of the feeder for partially processing the slender body; A cutting machine that is installed on the downstream side and cuts out the cut pieces having the constant pitch and substantially the same length by cutting the elongated body substantially in the width direction; and a cutting machine that is installed downstream of the cutting machine to cut the cut pieces. An elongated body forming apparatus provided with a bending machine that bends into a shape, wherein the bending machine forms a pair of openable and closable parts whose front portions project forward from a front wall of a frame of the bending machine. A claw, which is installed in the frame, applies an opening / closing drive force to the gripping claw, and when the gripping claw is closed, grips a die in contact with a front wall of the frame with the gripping claw. Switchgear and a frame around the die To be supported, by sequentially pressing the die through the bending tool cut pieces, shaping instrumentation elongated body having a plurality of bending slides Interview knit bending the cut pieces

5. The bending slide unit

A slider which can be approached and separated from the die, and has a storage hole formed at the tip thereof;

A bending tool attached to the tip of the slider;

A contact / separation device for moving the slider toward and away from the die,

A lock member having a lock engaging portion having an L-shaped cross section at its tip is movably stored in the storage hole, and a window is formed on an inner surface of one side of the storage hole. A bending engagement portion having an L-shaped cross section which can be engaged with the locking portion at the base end of the bending tool inserted into the storage hole; a groove on one side of the bending tool; A protruding part protruding from the base end is provided,

The protrusion was inserted into the window while the bottom surface of the groove was in sliding contact with the inner surface of one side of the storage hole located on the distal end side of the window, and the base end of the bending tool was inserted into the storage hole. Then, the bending tool is moved in parallel to the other side to lock the bending locking portion to the hook locking portion, and then the locking member is moved by a moving mechanism to the back side of the storage hole, 5. The elongated body according to claim 4, wherein the bending tool is attached to the slider by moving a part of the protruding portion until the projection reaches a rear side of the window.