JPH02179332A - Continuous bending machine for long size article and scale plate for continuous bending for long size article - Google Patents

Abstract

PURPOSE:To continuously bend work having many working processes by holding a central bender head between the bender heads on both sides so that it can move and providing a sliding clamp slidably together with a long size article. CONSTITUTION:The position of positioning stopper 86 is set so that the bender head 14-2 is placed in the middle of a reinforcement 48. A motor for the heads 14-1, 14-3 is driven to rotate a drive shaft 16 and to move the right and left heads 14-1, 14-3. Each cylinder for the bending heads 14-1, 14-3 in the bender heads 14-1-14-3 is driven and the upper part of the reinforcement 8 is covered with the center roller. Bending is performed by the piston as the center roller. Thereafter, a crank arm is oscillated by the drive of the motor, the bending roller is turned round the center roller holding the reinforcement 48, both ends of the reinforcement 48 is bent upward on a vertical surface and both ends of the hook reinforcement are formed.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is provided with a center guide that can move forward and backward in the axial direction, and allows the center guides 1 of a plurality of burgu heads to be moved back when not needed. The present invention relates to a continuous bending device for long objects that enables continuous bending of objects, and a scale plate for continuous bending of long objects.

[Conventional technology]

Generally, in long object bending equipment, long objects such as reinforcing bars and iron pipes are placed between a center guide such as a center roller and a bending roller that can rotate around the center guide. Ru. The bending roller rotates (revolutions) around the center guide, thereby bending the long object to a desired angle. During bending, a long object that is held between the center guide and the bending roller will try to escape to the side, so the long object must come into contact with the stopper to prevent the long object from escaping. Bending processes that are prevented include right angle bending (90° bending), hook bending (135° bending), anchor bending (180° bending), etc. For long objects, these bending processes are performed continuously. Continuous bending is widely practiced. For example, if you anchor-bend both ends of a reinforcing bar, the anchor bar (number of bends = 2)
is formed. Here, if the bending angle is 135°,
1356 hooks are formed at both ends, and by combining two hook bends with two right angle bends, a stirrup muscle (number of bends: 4) is formed. Also, there are 3 hook bends on the 2 hooks.
By adding two right angle bends, the hoop muscle (number of bends = 5)
is formed. Anchor bars, stirrup bars, and hoop bars are widely used as column bars and beam bars.

In order to efficiently perform such continuous bending,
A continuous bending machine for long objects in which bender heads equipped with a center guide and bending rollers are arranged side by side on a main frame is known. In general, a continuous bending device has five bender heads arranged in parallel to correspond to the streaks (number of processes: 5). It is configured in a so-called five-head type. In this type of continuous bending device, the center guide of the bender head is configured to move forward and backward in the axial direction. In order to avoid interfering with the feeding of long objects, the center guide of the bender head, which does not perform bending, is
It is moved backward and removed from the trajectory of the long object during bending (the bending trajectory of the long object).

With a continuous bending device for long objects,
For example, a hoop muscle is formed as follows.

If the lengths of the hook (end), vertical piece, and horizontal piece of the hoop muscle to be formed are a, L, and W, respectively (see Fig. 17 (F)), five bender heads 114-I N114-5 are used. is a predetermined distance, that is, distances a', L', W', as shown in FIG. 17(A), depending on the shape of the hoop muscle.
L', W', + are arranged in parallel and separated from each other.

After setting the five bender heads 114-1 to 114-5 at predetermined positions, first, while keeping all the center guides 22 moving forward, move the rads 114-1°11 to the bender at both ends.
When the bending rollers 24 of 4-5 are rotated by about 135 degrees in opposite directions, both ends of the reinforcing bar are bent by 135 degrees, and hook bending of both ends is performed simultaneously (see Fig. 17 (B)).
.

After that, the bender head 114-1.114 on both sides
- After retracting the center guide 22 of 5 and removing it from the bending trajectory of the reinforcing bars (
If the bending rollers of the second and fourth bender heads + 14-2 and 114-4 are rotated by about 90 degrees, two right-angle bends can be made at the same time. (See FIG. 17(D)).

Furthermore, the center guide 2 of the bender head 114-2
2 (see FIG. 17(E)) and rotate the bending roller 24 of the central bender head 114-3 by approximately 90 degrees to perform right-angle bending as shown in FIG. 17(F). In this way, desired hoop lines can be formed.

According to such a continuous bending device, a long object such as a reinforcing bar can be continuously bent by appropriately controlling the forward and backward movement of the center guide and the rotational movement of the bending roller.
Continuous bending of long objects can be performed quickly and easily.

In addition, after bending the bender heads 114-1 and 114-5 at both ends of the hook,
In such a configuration, the bender heads 114-2 and 114-4 can be omitted, and the continuous bending device for long objects can be , three penguhe, do is enough,
Can be configured into a three-head type.

[Problem to be solved by the invention]

In a configuration with five bender heads installed in parallel (five-head type), once the bender heads and reinforcing bars are set in the predetermined position according to the final shape (bending pattern) of the workpiece, long objects can be easily bent during bending. Continuous bending can be performed without adding feed or moving the bender head, and even complex hoop lines can be formed quickly and easily. However, since five bender heads are required, the continuous bending apparatus for long objects becomes structurally complex and cannot be manufactured at low cost.

In addition, in the case of the five-head type, the positions of the second and fourth bender heads are determined by taking the dimensions from the left and right of the center bender head, and then the positions of the first and fifth bender heads are determined by taking the dimensions left and right. Therefore, positioning the bender head is complicated and time consuming. Also, if you make a mistake in the initial measurements.

The whole thing has to be redone, and the errors are accumulated, with large errors being transferred to the outermost vendors (1st, 2nd,
(fifth bender head), making accurate positioning difficult.

On the other hand, if the bender heads at both ends are moved during bending, a continuous bending apparatus for long objects can be constructed from three bender heads. With this three-head type, by reciprocating the left and right bender heads by - degrees for each bending cycle between the end positions for hook bending and the inner position for right-angle bending, hoop lines can be formed. can.

By the way, hoop muscles are also used in construction work for medium-sized buildings. Goo ~ 30,000 pieces are required and even if 5 pieces are processed at the same time, the processing time will be 1.000~8゜000.
The bending cycle is repeated twice. Therefore, in a three-head type continuous bending machine for long objects, the left and right bender heads are moved t to correspond to the number of 5 bending cycles.
, ooo~s, ooo times, it is necessary to make reciprocating movements. Such manual adjustment of the bender head is complicated, and high workability cannot be ensured.

Furthermore, in known devices for continuous bending of long objects, not only the feed of the long object but also the feed of the bender head is manually adjusted, making it difficult to achieve accurate positioning and high processing accuracy. do not have.

By configuring the bender heads at both ends to be moved mechanically by the control means, the drawbacks of the configuration in which the bender heads are manually moved can be overcome.

However, bender heads with center guides and bending rollers are relatively heavy, and the reciprocating motion of the heavy bender head must be precisely controlled, and therefore have relatively large and highly precise motors. It is necessary to configure a control means for the bender head, and the continuous bending device for long objects needs to have a structure with high rigidity and excellent durability, which makes the structure complex and heavy. do. Also.

Continuous bending equipment must be securely fixed each time it is moved.

Further, elongated hoop lines with a large rectangular ratio (long side/short side) have recently been frequently used as wall structures of buildings. Here, if the short sides are made smaller, an elongated hoop line with a large rectangular ratio can be obtained, and a thin wall structure can be achieved. However, because the bender head is structurally large, the short side of the hoop muscle is
The limit is about 50 mm, which is an obstacle to making the wall structure even thinner.

In addition, in continuous bending equipment, the position setting of the bender head varies depending on the final shape (bending pattern) of the long object, the bending diameter (the radius of curvature of the circular arc part of the long object that has been bent), and the diameter of the long object. . Furthermore, the position of the bender head is often not indicated on blueprints, work schedules, etc., and operators at the site are required to take flexible measures. If the position of the bender head is not indicated on the blueprint, work schedule, etc., the operator must calculate the position of each bender head by considering the bending pattern, bending diameter, and diameter of the long object. The bender head must be set in a predetermined position.However, since there are many combinations of bending patterns, bending diameters, and diameters of long objects, setting the position of the bender head becomes complicated and a heavy burden. So,
This reduces work efficiency and causes calculation errors, contributing to the occurrence of defective products. A continuous bending apparatus for long objects in which the position of the bender head can be easily set has not yet been provided.

Although this invention is a two-head type, once the bender heads at both ends are set at the specified positions, a series of bending operations can be performed continuously by simply adding feed to the long object.
Another object of the present invention is to provide a continuous bending device for long objects and a scale plate for the same, in which the position of the bender head can be easily set.

[Means to solve the problem]

In order to achieve this object, according to the continuous bending apparatus for long objects of the present invention, of the three bender heads, the left and right bender heads are movably disposed with the central bender head in between. The convex is attached to the left and right movable bender heads so that the scale tip can be locked to the center bender head. A scale plate with a scale marked according to the diameter of the long object is arranged on the left and right movable bender heads so that the scale and the scale of the convex can be measured. Further, a sliding clamp for clamping and transporting a long object is slidably provided on the main frame.

[Effect]

According to this configuration, left and right Penderhe.

Once the rod is set in the specified position, complicated continuous bending of hoop strips can be performed simply by reciprocating the long object over a predetermined distance using the sliding clamp. There's no need.

A scale that takes into account the bending pattern, bending diameter, and diameter of a long object can be used as a convex scale, and the required travel distance of the left and right bender heads can be easily determined without complicated calculations, and the bender head can be easily moved. Position setting is easy.

〔Example〕

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

As shown in FIG. 1, a continuous bending apparatus 10 for long objects according to the present invention includes a main frame 12 formed by combining shape steel and the like, and a pender spatula F 14. A drive shaft 1B, a sliding clamp 18, a position detection means 49, etc. are provided.

The three bender heads 14 (14-1 to 14-3) are
They are arranged in parallel in the longitudinal direction of the main frame 12, with the left and right bender heads 141.14-3 movable on the main frame, and the central bender head 14-2 fixed to the main frame. There is.

As can be clearly seen from FIGS. 2 and 3, each bender head 14 is connected to a center guide, such as a center roller 22, which is disposed substantially horizontally and can move forward and backward in the axial direction, and which rotates around the center roller. The bending roller 24 moves (revolutions). The center roller 22 has a collar 23 that is loosely fitted around the tip of the piston 2B of the cylinder 25, and a guide hole 28 is bored in the center of the piston tip surface. However, for long objects with small diameters, the collar 23 may be removed and the piston 2B may be used as a center guide, and the guide pin 30 loosely fitted into the guide hole 28 may be opposed to the guide hole. and is provided on the bracket 13. The center roller 22 moves in the axial direction as the piston 2B advances and retreats (advances and retreats), and in the forward position, the guide pin 30 loosely fits into the guide hole 2B of the center roller to support the center roller. Therefore, the center roller 22 has a double-sided beam shape, and a strong structure having a large resistance to lateral pushing forces is obtained.

As shown in FIG. 3, the bending roller 24 is rotatably mounted on a shaft 32, and a stopper 34 is fixed to the tip end surface of the shaft to prevent the bending roller from falling off. The shaft 32 is fixed to the crank arm 38 by a set screw 3B. The crank arm 38 is loosely fitted around the collar 23 of the center roller at the tip of the piston 26, and a gear 40 is fixed to the crank arm by a key 39. A gear 4B fixed to a motor shaft 44 of the motor 42 is meshed with the gear 40. In such a configuration, the driving force of the motor 42 is transmitted to the crank arm 38 via the motor shaft 44 and the gears 48, 40 to swing the crank arm, and as the crank arm swings, one bending roller 24 rotates around the center roller 22 in a vertical plane.

Note that a plurality of bending rollers 24 having different outer diameters are prepared. Then, in order to bend the reinforcing bar 48 while reliably holding it between the center roller 22, an optimal bending roller 24 is selected depending on the diameter of the reinforcing bar 48, and is attached to the roller shaft 32 and bent. One bending process is performed by an optimal combination of the roller 24 and center roller 22.

A long object, for example, a reinforcing bar 48 is arranged between the center roller 22 and the bending roller 24, and the center roller 22 is moved forward to loosely fit the guide hole 28 and the guide pin 30, and then the bending roller 24 is rotated. The bending process is then performed. For example, when the bending roller 24 rotates approximately 135° clockwise around the center roller 22 as shown in FIGS. 4(A) and 4(B), the reinforcing steel 48 A hook 48a whose end is bent at 135°
becomes. Here, since the first bending roller 24 rotates upward in the vertical plane, the end of the reinforcing bar located on the horizontal plane is bent upward in the vertical plane and moves upward in the vertical plane. In addition, as can be seen from FIG. 1, in the embodiment, the bending rollers 24 of the left side and center bender heads 14-1, 14-2 move clockwise, and the bending rollers of the right side bender head 14-3 move clockwise. It is configured to rotate counterclockwise.

In this way, in a configuration in which the reinforcing bar 48 (elongated object) is bent not in a horizontal plane but in a vertical plane and moreover upwardly, the risk of injury to the operator due to contact with the elongated object is reduced. Furthermore, since the locus of movement of the reinforcing bars 48 is in the vertical plane, there is less dead space in the horizontal plane, the continuous bending device 10 can be downsized, and the installation area can be reduced.

During bending, the first bending roller 24 rotates while pressing the reinforcing bar 48 against the center roller 22, so that a large pressing force acts on the center roller from the side.

However, in the embodiment, in the forward position, the center roller 22 is held by the guide pin 30 and has a double-sided beam shape, so it can withstand large pushing forces from the sides and prevents deformation and damage of the center roller. fully prevented.

As shown in FIGS. 1, 5, and 6, the drive shaft 1B is provided in the main frame 12 below the fixed bender head 14-2 at the center of the drive shaft 1B, and extends to the right. This drive shaft 16 has, for example, a threaded portion 17 on its outer circumferential surface, and is rotatable but not movable in the axial direction.
It is built in between.

A motor shaft 52 of a motor 50 is connected to the left end of the drive shaft 16 via a coupling 51,
The drive shaft is driven and rotated as the motor starts. As the motor 50, a servo motor, a pulse motor, etc. can be used, or an inverter can be used in combination with the motor.

In addition, the rotation speed of the drive shaft is detected and the motor 50 is
A 1-position detection means 49 is provided to adjust the position of the sliding clamp 18 in cooperation with the 1-position detection means 49. In the embodiment, the position detection means 49 includes an encoder 53, and the encoder is connected to the right end of the drive shaft 1B via a puller 54. encoder 5
The rotation speed of the drive shirt 1B detected in step 3 is fed back to the motor 50, thereby controlling the rotation of the motor and adjusting the movement of the sliding clamp 1B on the drive shaft.

The sliding clamp 18 has a built-in female threaded portion that engages with the threaded portion 17 of the drive shaft, and is mounted on the drive shaft. Therefore, when the motor 50 is started to drive and rotate the drive shaft 1B, the sliding clamp 18 is moved to the right or left on the drive shaft as the drive shaft rotates. Here, the moving distance of the sliding clamp 1B depends on the rotational speed of the drive shaft 1B, and the moving direction thereof depends on the rotating direction of the drive shaft. Note that a guide bar 55 is installed parallel to the drive shaft 1B between the pair of brackets 12a. Then, the sliding clamp 18 is attached to the guide bar 5 using the bearing 5B.
It is supported by 5.

In this way, by being supported by both the guide bar 55 and the drive shaft 1B, the sliding clamp 18 is guided by the guide bar and moved on the drive shirt 18 without rotating. The movement range of the sliding clamp 18 is regulated by a limit switch 58 on the main frame 12 (see FIG. 6).

The drive shaft IB only needs to have a structure that moves the sliding clamp 18 in conjunction with the rotation of the drive shaft, and is not limited to the illustrated structure, for example,
A pole screw with a steel ball (pole) interposed therebetween may be formed between the drive shaft IB and the sliding clamp 18.

The sliding clamp 18 has a support plate 57, and a clamp mechanism 58 is provided on the support plate, as shown in FIG. Then, the reinforcing bar 48 is held by the clamp mechanism 58 on the sliding clamp IB and moves together with the sliding clamp,
It is transported a predetermined distance.

As shown in FIGS. 8 and 9, the clamp mechanism 58 includes a shielding block eO that is movable in the axial direction and a suppressing block θ that can be raised and lowered to sandwich the reinforcing bar 48 between the shielding block and the shielding block.
It is configured by combining 2. That is, frame 64
A cylinder for axial movement 70 and a cylinder for lifting and lowering 72 are respectively fixed to the cylinders, and a shielding blower 80 and a pressing block 82 are fixed to the tips of pistons 71 and 73 of each cylinder, respectively. A pair of square holes 6B into which the shielding block 80 is loosely fitted are provided in the frame B4 to face each other, and a pair of guide pins S8 extend into the square holes from both left and right sides, respectively. A long groove-shaped guide hole 89 into which the guide pin B8 is loosely fitted is formed from the tip to the center of both left and right sides of the shielding block 60, and the shielding block is guided by the guide pin and moves smoothly back and forth in the axial direction. will be moved to

In this manner, the clamping mechanism 5B that combines the shielding block 60 that is movable in the axial direction and the pressing block 62 that is movable up and down allows the reinforcing bar 48 to be reliably clamped between them despite its simple configuration. Further, since the configuration is simple, the clamp mechanism 58 can be easily unitized.

As shown by the dashed line, a spacer 87 is bolted to the lower surface of the shielding block 60 for the large-diameter reinforcing bar 4B. Therefore, the shielding block 60 along with the spacer
The square hole 86 is formed to have a sufficient size in the vertical direction so that the square hole 86 can be inserted therethrough. Further, the pressing block 82 is formed of a spacer 78 fixed to the piston 73 of the lifting cylinder 72, for example, by screwing, and a jagged plate 78 fitted in a hole 77 on the upper surface of the spacer. The serrated plate 7B is formed with a chevron-shaped uneven blade made of countless small serrations on its surface.

A pair of guide plates 79 for guiding the lifting and lowering of the pressing block B2 are provided on the frame 84 on both sides of the spacer.

In this way, in the configuration in which the jagged plate 78 is provided, the shielding block eO1 is
The reinforcing bars 48 can be reliably held between the pressing blocks 62. Furthermore, by moving the lifting cylinder 72 up and down, a large number of reinforcing bars 48 can be reliably held at the same time. In addition, reinforcing bar 4
By moving the lifting cylinder 72 up and down according to the diameter of the piston 8 and aligning it with the scale of the guide, the extension distance of the piston 73 can be reduced, and the reinforcing bars can be quickly and reliably clamped.

The clamp mechanism 58 attached to the sliding clamp 18 uses the medium-sized uneven blades of the serrated plate 7B to reliably clamp a large number of reinforcing bars and transport them simultaneously over the same distance.

In addition, the pressing mechanism 74 is a bender head! 4,
By holding a large number of reinforcing bars 48 at the same time, the reinforcing bars 4 during bending are
8 is prevented from escaping. The pressing mechanism 74 is connected to the shielding block 80. Instead of spacer 7B and jagged plate 78,
Except for the fact that the L-shaped block was screwed onto the piston 73,
It has the same configuration as the clamp mechanism 58, and presses the reinforcing bar with the tip of an L-shaped block. The suppression mechanism 74 of each bender head 14 functions as a stopper. In the embodiment, the left side, center bender head 14-
The bending rollers 24 1 and 14-2 are configured to be able to rotate clockwise, and the bender head 1 3 on the right side is configured to be able to rotate counterclockwise.

Therefore, as seen from the position of the lifting cylinder 72 in FIG.
They are provided on the right side with respect to the bender head 14-1 and 14-2, and on the left side with respect to the bender head 14-3.

As described above, the central bender head 14-2 is fixed and the drive shaft 16 is adjacent to the central bender head 14-2.
is provided on the main frame 12. Therefore, the reinforcing bar 48 that is held and conveyed by the clamp mechanism 58 of the sliding clamp on the drive shaft IB is positioned based on the position of the bender head 14-2. Hence the central vendor head! For 4-2, reinforcing bar 4
8 positions can be set relative to each other, and the feed of reinforcing bars can be adjusted quickly and easily.

Bender head! Among 4-1 to 14-3, the center pengu head 14-2 is fixed to the main frame 12, while the 17 dors 14-1 are attached to the bender on both sides.
．． 14-3 is movably provided across the central bender head. For example, vendor 14-
1.14-3 is made movable by a structure similar to the conveying means for the sliding clamp 18 described above. That is, the combination of the motor 50, drive shaft 18, and encoder 53 shown in FIGS. 5 and 6 is, for example,
They are arranged almost symmetrically on both sides of the central bender head 14-2. In place of the sliding clamp 18, a movable bender head 14-1 or 14-3 may be attached to the drive shaft 16, respectively. In this configuration, each drive shaft 1B
The twisting directions of are opposite to each other, and by driving the motor 50, the bender heads 14-1 and 14-3 are
It is moved a predetermined distance.

Of course, as described with respect to the sliding clamp 18, a ball screw may be provided between the drive shaft 1B and the bender head 14-1, 14-3, or the drive shaft IB and the motor 50 may be connected to the bender head 14-1. 1.14-3 may be provided independently.

When the motor 50 is started and the drive shaft is rotated, the transfer roller 84 transfers on a pair of rails 82 on the frame (see FIG. 3), is guided by the guide bar 55, and moves the bender head 14-1. 14-3 is moved on the main frame.

Furthermore, as shown in FIG.
It is equipped with. In the embodiment, since the iron 11fJ48 is transported from right to left, the positioning stopper 86 and the auxiliary holder 88 are moved to the left bender.
14-1, the right penguhera F. 1 positioning stopper 841, which is attached to the main frame 12 on the left side of 14-3. The auxiliary holder 88 has a known configuration, and the tip of the reinforcing bar 48 conveyed from the right to the left is positioned by coming into contact with one positioning stopper. Further, the reinforcing bar 48 is slid on the auxiliary holder 88 and sent to the left.The attachment position of the 0 positioning stopper 88 and the auxiliary holder 88 can be manually adjusted as appropriate. Contrary to the embodiment, the reinforcing bars 48 are transported from the left to the right.

Positioning stopper 88. The auxiliary holder 88 is attached to the left bender head 1i-t and the right pengo head 14-3.
are placed on the right side of each.

In addition, as shown in Fig. 1 and Fig. 1O, the convex 9
2 (92-1, 92-3) are respectively attached to left and right movable bender heads 14-1 and 14-3. Convex case 84 is bender head 14-1.14
-3, and the convex 92 is housed in a convex case so that the scale 93 can extend toward the central bender head, and is fixed with a fixing bolt. As the convex 92, it is preferable to use a convex that exerts a traction force in the direction of shrinkage so as not to cause sagging. Note that instead of using the convex case 94, the convex 92 is attached to the bender head 14-1.14 with adhesive or the like. -3 may be attached directly.

As can be clearly seen from Figure 1O, the locking piece 9B is bolted to the central bender head 14-2, and the puller piece 93-1a at the scale tip of the left convex 82-1 is attached to the right end of the locking piece. In addition, the hooking piece 93-3a at the tip of the scale of the right convex 82-3 can be locked to the left end of the locking piece. For example, the hooking piece 93-1a is connected to the locking piece 98
Attach it to the right end of the bender head on the left! 4-1, the scale 93-1 of the convex expands and contracts as the bender head 14-1 moves. Therefore, by reading the scale 93-1,
The moving distance of the bender head 14-1 relative to the fixed bender head 14-2 can be easily grasped.On the other hand, the hooking piece 92-3a is engaged with the left end of the locking piece 98, and the left bender head 14- If you move 3, the scale will be 93-3.
From the scale, the moving distance of the bender head 14-3 can be easily grasped.

The locking piece 86 may be configured so that the bender head 14-2 is not provided, and the hooking pieces 1113-1a and 93-3a at the tip of the scale are locked to the uneven portion formed on the bender head 14-2.

In this way, the convex θ2 (112-1, 92-3
) is a left and right movable bender head 14-1.14-3
The bender head 14-
The moving distance of 1.14-3 can be directly and easily grasped from the scale of the corresponding convex.

In addition, as shown in FIG.
is arranged adjacent to the left end of the main frame 12, and the bending pattern table 99 is attached to the front surface of the control box.The bending pattern table 93 is made of, for example, a thin acrylic plate, a steel plate, etc. As shown in , there are many typical bending patterns, 15 in the example.
The 1-bending pattern table 83 is configured so that the 1-bending patterns 1 to 15 shown in the figure, the presence or absence of movement of the bender head and sliding clamp that are operated corresponding to the bending patterns, and the movement direction thereof can be recognized at a glance. In the 0-track turn table 88, the bender head 14-1
．． 14-2.14-3 are simply displayed as A, B, and C, and for example, bending patterns 1 and 2 are bent using bender head B, that is, the central bender head 14-2. It is easily understood from the 1 bending pattern table. According to the bending pattern 13, all of the bender heads λ, B, and C are utilized, and the sliding clamp 18 is first set to the right, then moved to the left, and conveys the reinforcing bar 48. , it can be seen that hoop lines are formed.

By providing one bending pattern table 38 in this way,
Bender head 14 operated according to the bending pattern
The type of sliding clamp 18, whether or not the sliding clamp 18 is moved, and the direction of movement if it is moved can be recognized at a glance, and the desired processing procedure can be easily understood.

The illustrated bending pattern table 98 is an example, and the number, arrangement, etc. of bending patterns are not limited to those illustrated.

In addition, the bending pattern table 93 is shown in the control box 9B.
Although the mounting position is not limited to this, the mounting position is not limited to this.

A changeover switch 100 for selecting an electric circuit corresponding to the bending pattern is rotatably attached to the center of the bending pattern table 99. The changeover switch 100 is configured to select an electric circuit, for example 1f, and a sea case control circuit corresponding to the bending pattern, and enable bending according to a predetermined processing procedure. For example, if the bending pattern 13 is selected by the changeover switch 100, the bending process is performed by the penguherads 14-1 (A) and 14-3 (C), the sliding clamp 18 is moved to the right, and the bender head 14-2 ( B), the sea case control circuits for bending by 14-3(C), moving the sliding clamp 1B leftward, and bending by bender head 14-2(B) are closed in sequence, and the predetermined processing procedure is completed. It is possible to perform continuous bending according to the following.

As in bending pattern 1.2 of bending pattern table 100,
In the bending process (number of bending processes = 1) using only the central fixed bender head 14-2 (B), the position of the bender head is set regardless of the diameter of the center roller 22 or the diameter of the reinforcing bar 48 ( Since the bender head used is the fixed bender head 14-2 (B), in reality,
In bending processes that use two or more bender heads (number of bending processes: 2 or more), such as bending patterns 3 to 15, where the position of reinforcing bars is determined), bending patterns 3 to 15, the distance between bender heads (Fixed bender head 14-2
Movable bender head 14-1 (A) relative to (B);
14-3 (C) relative position) is the bending diameter, reinforcing bar 48
It is related to the diameter of

Specifically, the position of the bender head is set based on the center of the center roller 22 of the bender head.

For example, the center roller 22 of a 2m bender head
If the diameter of the reinforcing bar is 2r and the diameter of the reinforcing bar is D, then the distance between the bender heads is 2r compared to the external dimensions of the reinforcing bar after bending.
It becomes shorter by (r◆D). Therefore, the movable bender head 14 with respect to the fixed bender head 14-2(B)
-1(A) and 14-3(C), that is, the setting position varies depending on the center roller diameter and reinforcing bar diameter, and as the center roller diameter and reinforcing bar diameter change, the bender head 14-1(A ), it is necessary to correct the setting position of 14-3(C). However, 1. Usually, the center roller diameter is four times the reinforcing bar diameter.

Also, the type of bending, that is, right angle bending (90' bending),
Two-to-two bending (135° bending), anchor bending (180° bending)
The total length (cutting dimension) of the reinforcing bar 48 also differs depending on the degree of bending.

For example, as shown in Figure 13 (^), in right angle bending, the center roller diameter is 2r (40 mm, 2rs4D
), reinforcing bar diameter D (10
/2)X 90/38G)s 2X 3.14X
25X 1/4-38.25), but the first
As shown in Figure 3 (B) D, when hook bending under the same conditions,
The length Lo of the circular arc portion at the axis is 58.875 mm (2π
(r◆D/2) X 135/380), and
Although not shown, in anchor bending, the length of the circular arc portion at the axis is 78.5 m (39.25 x 2).

Therefore, for example, the position of the bender head relative to the right end of the reinforcing bar before one bending process (bender head 14-3 (C)
The center of the center roller 22) is bent at a right angle to 109.
25 Cao Yu, 128.875 in the hook bend, 148° 5 ■■ left side in the anchor bend.

For example, in bending a hoop line like bending pattern 13, the vertical and horizontal sides are each set to W, and the bender heads 14-1 (A) and 14-2 (B) are rotated clockwise by the bending roller. If the bender head 14-3 (C) is a bending roller that rotates counterclockwise, the bender heads 14-1 (A), 14-3 (C) (7) The set positions are as follows.
t, +w−t.

, L+(4D+2r), where 2. Normally, the diameter 2r of the center roller is 4D, so the setting position of the bender head 14-1(A) is LAW-80.

The operator must calculate the setting positions of the bender heads 14-1 (A) and 14-3 (C) by considering the reinforcing bar diameter and bending pattern, but such calculations are complicated and Therefore, in the present invention, a scale plate 102 is prepared that takes into account the reinforcing bar diameter and bending pattern.
) The continuous bending device 10 is configured so that the setting position of the bending device 10 can be recognized by looking at the setting position.

In the example, the diameter of the center roller is set to four times the diameter of the reinforcing bar, the bending rollers of bender heads 14-1 (A) and 14-2 (B) are rotated clockwise, and the bending rollers of bender head 14-3 (C) are rotated clockwise.
) is rotated counterclockwise. Therefore, the bender heads 14-1(A), 14-3
The scale of scale play ) 102 differs depending on the rotating direction of the bending roller in (C), and the bender head 14-1
A scale plate 102-1 for (A) and a scale plate 102-3 for bender head 14-3 (C) are prepared.

The scale plates 102-1, 102-3 are the convex scales 93-1. It has a measurable scale aligned with the θ3-3 scale, and the scale is formed corresponding to the diameter of the reinforcing bar to be bent. As shown in FIGS. 14 and 15, in the embodiment, the scale plate 102-
1, 102-3 is formed in a rectangular cross-sectional shape with scales on both the front (elevation) and top surfaces, but the shape is not limited to this, and may be, for example, a partially circular cross-section or a triangular cross-section.

The bending procedure according to the bending pattern is determined in advance, and the bending procedure is determined by selecting the bending pattern using the changeover switch 100 in the bending pattern table shown in FIG. That is, depending on the bending pattern chosen,
It is determined in advance which parts of the vertical and horizontal sides the bender heads 14-1 (A) and 14-3 (C) bend and in what order.

The bender head 14-1 in each bending pattern corresponds to a predetermined bending procedure.
(A) and 14-3 (C) are determined by the 0 bending pattern displayed on the scale plates 102-1 and 102-3.
), 14-3(C) have different moving distances, and the symbols "Yu" and "Yo" on scale plates 102-1 and 102-3 are different.
indicates the external dimensions of the vertical and horizontal sides of the reinforcing bar 48 in the final shape, and "Yu+Yo" indicates the sum of the vertical and horizontal sides.
indicates the sum of the vertical sides. Of course, the display on the scale plates 102-1 and 102-3 is not limited to what is illustrated, and various other display methods may be adopted.

Scale plate 10 of bender head 14-1(A)
Regarding 2-1, for example, as shown in FIG. 14, one bending pattern 8. Regarding It, 12, the bending process is performed with the graduations 104-1 on the upper surface of the scale plate 102-1 being aligned with the graduations of the scale 93-1 (see FIG. 10) of the convex 92-1. In other words, in bending pattern 8, the length equivalent to the length of the vertical side, for example, if the vertical side is 600 mm, the convex is 92 mm.
The scale 600 of the scale 93-1 of -1 is the scale +04-
1 until it lines up with the corresponding reinforcing bar diameter scale.

The bender head 14-1(A) is moved. In other words,
If the diameter of the reinforcing bar is 10 g + tassel, the scale 10 of the scale @ 104-1 is aligned with the scale eoo of the scale 93-1 of the convex 922-1. Even when using the same scale 104-1, in the bending pattern 11.12, the bender head 14-1 (
A) is moved. Also 1 bending pattern 9.10j3~
15, the scale 104-1'' on the front surface of the scale plate 102-1 is used. For example, the vertical side is 600cm, the horizontal side is 500cm1. If the reinforcing bar diameter is 10■■, the bending pattern is 9. In 1O, the length is twice the length of the vertical side (1200 m), and in bending patterns 13 to 15, the scale 93-1 of convex 82-1 corresponding to vertical + horizontal sides (1100 mm) is used. Bender head 14-1(A) until scale 10 of scale plate 104-1' is aligned with scale 1200 or ttoo.
is moved.

Similarly, for the scale play 102-3 of the bender head 14-3 (C), as shown in FIG. For bending patterns 11 to 15, scale plate 1 is used for blind stacking.
The scale 104-3' on the front surface of 02-3 is used. In bending patterns 3 to 10, the scale 5 ( to, scale plate 1
The bender head 14-3 (C) is moved until the scales 10 of 02-3' are aligned. In addition, bending pattern 10
~15, length of vertical side + horizontal side (1100ms)
The bender head 14-3 (C) is moved until the scale 10 of the scale play 102-3' is aligned with the scale 1100 of the scale 93-3 of the convex 92-3 corresponding to the scale 93-3.

In this way, the scale was calculated in advance for the bender heads 14-1 (A) and 14-3 (C) with modifications taking into account the center roller diameter (4 times the reinforcing bar diameter) and the type of bending pattern of the reinforcing bar diameter 1. A plate 102 is provided, so that the operator only has to move the bender heads 14-1 (A) and 14-3 (C:) according to the lengths of the vertical and horizontal sides, and the reinforcing bar diameter 1 There is no need to consider modifications that take into account the type of bending pattern.Therefore, there is no need to perform calculations that take into account the type of reinforcing bar diameter bending pattern for each different reinforcing bar diameter and bending pattern, and the operator is freed from complicated calculations. , accurate continuous bending can be performed quickly.

The hoop line having the shape shown in FIG. 18(F) is formed by the continuous bending apparatus 10 having the above configuration as follows.

The hoop streak of this shape is recognized as bending pattern 13 from the 1 bending pattern table 98.0 From the bending pattern 13 of the 0 bending pattern table 39, the bending process of this hoop streak is performed using bender heads 14-1(A) to 14-1. 3(B) are utilized and the sliding clamp 18 is moved to the right and to the left.

Although various procedures can be considered for processing the hoop lines, the following processing procedure is adopted, similar to the processing procedure in the above-mentioned known configuration.

(1) First, hook bending of both ends of the reinforcing bar is performed simultaneously by the bender heads 14-1 and 14-3.

(2) Next, the bender heads 14-2 and 14-3 simultaneously bend the reinforcing bars at right angles on both sides.

(3) Finally, the center of the reinforcing bar is bent at a right angle using the bender head 14-2.

First, the total length of the reinforcing bar 48 to be bent is 2 (vertical side +
It is determined from horizontal side + hook) - (8D or ton). The value of (an to 100) is usually determined empirically by the operator in consideration of the elongation during bending. .5 layers.

The position of the positioning stopper 88 is set so that the bender head 14-2 is located approximately at the center of the reinforcing bar 48. And for example! A reinforcing bar 48 with a recommended diameter of 0.0 mm is placed on the auxiliary holder 88 and pushed to the left so that the tip of the reinforcing bar comes into contact with the positioning bar 88.

For the reinforcing bars 48 with a diameter of 10 mm, 9 wooden reinforcing bars can be loaded on the auxiliary holder 88, but the motor 5 for the bender head 14-1.
0 respectively, drive and rotate the drive shaft 18, and set the length a according to the hook length a (100 mm).
' (128,875 mm, see Figure 13 (B)),
The left and right bender heads 14-1, 14-3 are moved so as to be located inward from the front and rear ends of the reinforcing bars (see FIG. 16(A)).

The movement of the bender head 14-1.14-3 is performed as follows. As shown by the solid line in FIG.
It is locked on the right end of the screen and is waiting. Also, the hook piece 1 on the tip of the scale of the Pengu Hera F 14-3 convex
33-3a is usually locked to the left end of the scale plate 102-3 and is on standby.

For example, first, the hooking piece 93-1a is detached from the scale play +02-1, and as shown by the dashed line in FIG.
It is locked at the right end of the

Since the bending pattern of the hoop muscle is 13, from the scale plate 102-1, in the bending pattern 13,
It is recognized that the sum of the vertical side and the horizontal side, that is, the 11001st layer is the set position of the bender head 14-1.

Therefore, the graduation 1100 of the scale 93-1 is 10 of the graduation 104-1' on the front surface of the scale plate 102-1.
The bender head 14-1 is moved until it is aligned. Note that the distance between the bender heads 14-1 and 14-2 is exactly 1, as shown by L°◆so in Fig. 18.
It becomes 058.5 intestine ■, and the scale tto of scale 93-1
o does not match, which means that the scale of scale 93-1 is
The right end of the bender head 14-2 and the bender head 14-
This is the sum of the distance from the right end of 1 (1058, 5 Peng ■) and the distance from the right end of 102-1 (Scale Plate Brake) to the scale 10 of 102-1 (41,5 Dew ■) It is from. In other words, the distance between the bender heads 14-1 and 14-2 (1058°5■■) is 1100-41.5 (approximately 40).

The encoder 53 detects the rotation speed of the drive shaft 16 to determine the moving distance of the bender head 14-1, and when the bender head moves a predetermined distance, the motor 50 is stopped. According to this invention, the bender head 14-1 once moved to a predetermined position is fixed at that position during the bending process, and there is no need to move it again.

Next, in order to move the bender head 14-3, the hook piece 93-3a is first detached from the scale plate 102-3, and as shown by the two-dot chain line in FIG. It is locked to the left end of the stopper piece 96.

In order to facilitate the removal of the hooking piece 93-3a, the locking piece 98 and the scale plate 102-1, 1 are attached as shown in the figure.
It is better to chamfer the corners of 02-3, bender head 1
It can be seen from the scale plate 102-3 of 4-3 that in the bending pattern 13, the sum of the vertical side and the horizontal side, that is, 1100 mm, is the set position of the bender 14-3.

Therefore, the graduation 1100 of the scale 83-3 is the l of the graduation 104-3 on the front of the scale plate 102-3.
The bender head 14-3 is moved until it is aligned at O. Bender head 14 shown in Fig. 16 as L゛÷-°
The distance between -2.14-3 is 1019.5 mg + te, which does not match the scale e3-3 (ttool amount). This is because the scale 93-3 has the bender head 14-2. Distance 1t (133B-75mm) between the right end and the left end of Bender Rad 14-3, and scale plate 1
02-3 left end and scale play) 102-3 distance from scale 10 (80,75 Peng ■).

This is because it is the sum of In other words, the distance between bender head 14-2.14-3 (1019, 25 ■)
becomes 11Go-80,75 (approximately 80).

Similarly to the movement of the bender head 14-1, the encoder 53 detects the rotation speed of the drive shaft 1B for the bender head 14-3, and the bender head 14-3 is moved.
When the bender head moves a predetermined distance, the motor 50 is stopped. The bender head 14-3 is once moved to a predetermined position.

Like the bender head 14-1, it is fixed in position during the bending process and does not need to be moved again.

The difference in the moving distance of the bender heads 14-1 and 14-3 of 39.25 s is because the bending roller 22 of the central bender head 14-2 rotates clockwise, and the difference is 38°251 As shown in Figure 13(A), the length of the intestine corresponds to the length of one circular arc (39,25■■).

After moving the 14-1, 14-3 to a predetermined position, the cylinder 70 for moving back and forth of the clamp mechanism 58 attached to the sliding clamp 18 is driven to advance the piston 71, and the piston tip is shielded and blown. 8
0 loosely fit into the square hole 6B of the frame (see FIGS. 8 and 9). Then, the shielding block 8G closes the reinforcing bar 48.
The top of the is covered. Thereafter, the lifting cylinder 72 is driven, and the piston 73. The pressing block B2 is raised and the reinforcing bar 48 is held between the shielding block 80 and the pressing block. The clamp mechanism 58 of the sliding clamp 1B is
During the bending process, the reinforcing bar 48 is continued to be held. In addition, the lifting cylinder 70 of the suppression mechanism 74 attached to the bender head 1 to -14-3 is driven, and the Lfi at the tip of the piston is driven.
Press the reinforcing bar with the tip of the block.

Then, among the bender heads 14-1 to 14-3,
Penguhe, Do 14-1.14-3, which performs bending processing
drive each cylinder 25 to advance the piston 2B, loosely fit the guide hole 28 at the tip of the piston into the guide pin 30 of the main frame, and cover the upper part of the reinforcing bar 48 with the center roller 22 (see Fig. 3); If the workpiece (long object) is a small-diameter reinforcing bar 48 with a diameter of about 10 seconds, the collar 23 is not attached to the piston 2B, and the bending process is performed using the piston as a center roller (center guide).

Thereafter, when the motor 42 is started, the driving force of the motor is transmitted to the crank arm 38 via the motor shaft 44 and gears 48 and 40, and the crank arm is swung around the piston 2B. As the crank arm 38 swings, the bending roller 24 is rotated about 135 degrees around the center roller while holding the reinforcing bar 48 between the bending roller 24 and the center roller 22 . Then, both ends of the reinforcing bar 48 are bent upward in a vertical plane, and hooks 48a are formed at both ends of the reinforcing bar (see FIG. 18(B)).

For Pengu Hera F 14-1.14-3, drive the cylinder 42 of the bending roller 24 and bend the bender head 14.
-1. Return the bending roller 24 of 14-3 to the initial position.

Regarding the bender head F 14-1, the cylinder 25 of the center roller is driven, and the center roller is moved back together with the piston 2B to return to the initial position.

For ease of understanding on the drawing, the bender head 14 shows the center roller 22 retracted to its initial position with an x.
-1 retreat of the center roller 22 eliminates any obstruction on the conveyance path of the hook 48a at the end of the reinforcing bar, making it possible to convey (feed) the reinforcing bar to the right. In addition, the cylinder 7 of each pressing mechanism 74 of the bender head 14-1-14-3
2 is driven, the L-shaped block is lowered, the pressure on the reinforcing bars 48 is released, and each of the pressing mechanisms 74 of the bender heads 14-1 to 14-3 is freed for four days. However, the clamp mechanism 58 of the sliding clamp 18 is
Continue to hold the reinforcing bar 48.

Then, the sliding clamp motor 50 is started, the drive shaft 18 is rotated, and the sliding clamp 18 is moved a distance X approximately equal to the longitudinal side of the hoop muscle.
’ is moved to the right. In the embodiment, the sliding clamp 18 is set so that the iron fls 48 extends to the right with a length (60L 25 mm) that matches the vertical side of the hoop muscle.
t*, 579.25mm (distance
-20 (radius of center roller) -10 (diameter of reinforcing bar) -5
79°25), by detecting the rotational speed of the drive shaft lft, the moving distance of the sliding clamp 1B is ascertained, and the sliding clamp is 579.2
5) When the motor 50 is moved, the motor 50 is stopped and the reinforcing bar 48 held by the clamp mechanism 58 on the sliding clamp is moved.
is sent to the right for 579.25 hours (Fig. 16 (B)
, (C)).

When the reinforcing bar 48 is sent to the right by a distance X' (579,25
■l) Only.

It is separated from the bender head 14-3 to the right. Also, the distance is approximately equal to the vertical side + horizontal side (1058, 5 + 30 - L'
◆W.

) The hook at the left end of the reinforcing bar 48 located to the left of the bender head 14-2 moves 579.25 degrees to the right.

Distance It W' (5013
, 25 layers m-1088, 8-57!11.25).

Distance X' (5713, 2
After feeding the reinforcing bar 48 for 5s+■), the bender head 1
4-2. The cylinder 72 of the pressing mechanism 74 of 14-3 is driven, and the reinforcing bar 48 is pressed again by the L-shaped block.

Then, the cylinder 25 of the bender head 14-2, 14-3 is driven to move the center roller 22 forward.

Then, when the motor 42 is started and the crank arm 38 is swung to rotate the first bending roller 24 by about 80 degrees, the reinforcing bar 4
8 is subjected to two right angle bends at the same time (Fig. 18 (11
), then the vertical side of the hoop reinforcement is formed at the right end of the reinforcing bar 48, and the horizontal side of the hoop reinforcement is formed at the left end of the reinforcing bar.

After the right angle bending, the bender head 14-2 is
．． By driving the cylinder 72 of the pressing mechanism 74 of 14-3,
The pressure on the reinforcing bars 48 is released. In addition, the bender head 14
-2. Return the bending roller 24 of 14-3 to the initial position, and move the center roller 22 backward.

Then, start the motor 50 and drive shaft 16.
Rotate and move the sliding clamp 18 to the left by the same distance X' (57L25mm) as above,
The sliding clamp is returned to its initial position (18th
16(E), the reinforcing bar 48 bent by the bender head 14-2, 14-3 is moved a distance X° to the left of the bender head 14-2. The hoop muscle will be located 609.25μl to the left of the bender head 14-2 (
579.25◆20 (center roller radius) +10
(diameter of reinforcing bar)・809.25) Here, since the center roller 22 of the bender head 14-3 has been moved back in advance and removed from the conveyance trajectory of the reinforcing bar 48, the reinforcing bar is -3 is sent to the left without being hindered by the center roller 22. After pressing the reinforcing bar 48 by the pressing mechanism 74 of the bender head 14-2, the center roller 22 of the bending head F 14-2
．． The center of the reinforcing bar is bent at a right angle by the bending roller 24, so that the vertical side of the hoop bar is formed in the vertical direction on the left side of the bender head 14-2, and the horizontal side of the hoop bar is formed in the horizontal direction on the right side of the bender head 14-2. A hoop line having a desired shape with a vertical side of flowm, a horizontal side of 500 mm, and a hook of 100 mm is formed (see FIG. 18(F)).

As described above, according to the present invention, the sliding clamp 18 for loading and conveying a long object such as iron vJ4B only makes one reciprocation over a predetermined distance, for example, a distance approximately corresponding to the vertical side of the hoop wire. So, a hoop line with 5 bending steps can be formed with 3 bends, that is, 1 bender head.
4-1. Once the position of 14-3 is determined according to the lengths of the vertical and horizontal sides, a series of bending processes of hoop muscles of the same shape can be performed by reciprocating the sliding clamp 18 once. Can be done continuously. Therefore, 5. Even if a hoop muscle of 30,000 trees is bent at the same time, t, ooo to e, ooo times can be bent quickly.
It is easy to perform and bending can be performed with high workability.

Sliding clamp 18 is drive shirt) 1B
The rotation of the drive shaft is detected by, for example, an encoder 53 to adjust the position of the sliding clamp. Therefore,
By adjusting the position of the sliding clamp 18, feeding of a long object can be performed mechanically and automatically. In particular, since the position of the long object is set based on the fixed position of the bender head 14-2, the bender head 14-2
The position of the long object is set relative to the object. Therefore, compared to the known configuration in which the sliding clamp 18 is manually moved to send a long object, in this invention,
Reinforcing bars can be fed accurately and quickly, and a series of continuous bending operations can be performed quickly and easily with high precision.

Further, in the configuration in which the sliding clamp 18 is moved in this manner, the sliding clamp is lightweight, and therefore the sliding clamp can be transported by a small and inexpensive motor.

In the configuration of the present invention that automates the feeding of long objects, if the movements of the center roller 22, bending roller 24, shielding block 60 of the clamp mechanism, and pressing block 82 as well as the movement of the drive shaft motor 50 are programmed and controlled, A high degree of automation becomes possible. Therefore, t,oo
The bending process can be easily repeated 8,000 times.

The movement of the bender head 14-1, 14-3 prior to processing can be easily performed by -1 times for a series of bending processes, so there is little need to automate the movement. Head 14-1.14
-2 questions and the distance between 14-2.14-3, Penguhe, Do 14-1.14-3 will be automatically moved to the desired position by the program. -3 movement may be controlled.With such a configuration, automation is further promoted. In addition to forming, other bending processes such as anchor bars and stirrup bars can be performed quickly and easily. That is, as can be understood from FIG. 16(B), if the bending process is completed when both ends are bent, the anchor reinforcement is formed. Moreover, as can be understood from FIG. 18(B), if the bending process is completed when two right-angled ridges are made in addition to the bending of both ends, stirrup lines are formed.

As described above, in the present invention, the target bending pattern (bending pattern) can be determined from the bending pattern table 93, and the type (number) of the bender head 14 to be used can be determined according to one bending pattern. Recognized. It is easy to understand which of the following should be taken as the amount of movement of the bender head 14 from the scale play) 102: (1) Vertical side, (2) Horizontal side, (2) Vertical side + horizontal side, (2) Vertical side + Vertical side.

Then, the hooking pieces 93-1a and +13-3a of the scale of the convex of the corresponding bender head are engaged with the locking pieces 96 of the fixed bender head, and the rad 14 is attached to the bender.
-1.14-3 move, convex scale 93
By aligning the -1.93-3 scale with the diameter scale of the long object (reinforcing bar 48), the bender head is set at a predetermined position.

In this kind of bending process, as the amount of movement to the bender, the center roller diameter of the long object (reinforcing bar 48) and corrections according to the bending pattern are made on the vertical and horizontal sides. There is no need to take this into consideration, and the values of the vertical and horizontal sides can be used as they are as the amount of movement of the bender head 14, and there is no need to perform complicated calculations. Therefore, the bender head 14 can be set at a predetermined position accurately and quickly, and bending can be performed with high efficiency. Also, Bender Head! There is no occurrence of defective products due to miscalculation of the amount of movement in step 4, and processing can be performed with a high yield. As described above, if a known three-head continuous bending apparatus for long objects is used, it is necessary to move the bender heads on both sides during bending. Furthermore, in order to perform bending without moving the bender head, it is necessary to use a five-head structure.

However, if we use five heads, the composition will be complicated,
Continuous bending equipment for long objects cannot be produced at low cost.Furthermore, with five heads, positioning the bender head is complicated and time consuming, and if you make a mistake in the initial dimensioning, you have to redo all dimensions. Furthermore, the errors accumulate and large errors occur in the outermost bender heads, making accurate positioning difficult.

In contrast, according to the present invention, although it is a three-head bender, there is no need to move the bender head once it has been moved to a predetermined position during bending, and the drawbacks of both the three-head and five-head are eliminated. An apparatus for continuous bending of objects is obtained.

Furthermore, in known configurations in which the length of the strips that can be formed is determined by the spacing of the bender heads, the bender heads are structurally large, making it impossible to form small short sides, resulting in sufficiently thin short-long near-shape hoop strips. However, in this invention, the sliding clamp clamps and conveys a long object.

Furthermore, the sliding clamp does not make the bender head structurally large, and bending can be performed at a position close to the bender head. Therefore, conventionally, 2501 ■
However, according to the present invention, it is possible to easily bend the short side of about 80 mm, and a sufficiently long hoop strip can be obtained, making it possible to make the wall structure thinner. The above-mentioned embodiments are for illustrating the present invention, and do not limit the present invention in any way, and all modifications and modifications within the technical scope of the present invention are also covered by the present invention. Needless to say, it is included in

For example, in the embodiment, the position detecting means 49 detects the rotation speed of the drive shaft 1B using the encoder 53, but a rotation speed sensor other than the encoder may be used. The 1-position detecting means 49 may be configured to directly detect the position of the sliding clamp 18 or the movable bender rad 14-1, 14-3 by means of a sensor.

The technical idea of this invention can also be applied to a continuous bending device for long objects of five or more lengths. For example, when performing two different types of continuous bending, such as A and H, in a complicated manner, the first and fifth bender heads move in pairs, and the second and fourth bender heads In this configuration, it is preferable to arrange five bender heads in parallel so that the first and second bender heads move in pairs. The continuous bending process A can be performed alternately and rapidly by combining the fifth bender head with the central bender head, and the continuous bending process B can be performed by combining the second and fourth bender heads with the central bender head.

〔Effect of the invention〕

As described above, according to the continuous bending apparatus for long objects according to the present invention, among the three bender heads, the bender heads on both sides sandwich the central bender head, regardless of whether it is electric or manual. It is movably arranged, and a sliding clamp is provided so that it can slide while clamping a long object.

In such a configuration, once the bender heads on both sides are set at positions corresponding to the vertical and horizontal sides.

By simply reciprocating the sliding clamp once for each bending process, even bending processes that require a large number of processes, such as hoop lines, can be performed continuously. Therefore, the bending process is 1.000~5.
,000 repetitions can be performed quickly and easily, ensuring high workability.

Moreover, since it is sufficient to have three bender heads instead of five, the continuous bending apparatus for long objects is structurally simplified and can be produced at low cost.

Furthermore, since the sliding clamp is lighter than the bender head, a small and inexpensive motor can be used as the motor for conveying the sliding clamp.

Further, according to the continuous bending device for long objects of the present invention, the bending process can be easily automated, and the target bending pattern can be found from the bending pattern table, and the bending pattern can be used in accordance with the bending pattern. Type of bender head (
number) is recognized, and it is easy to understand from the scale plate which of the following should be taken as the amount of movement of the Rad to the bender: ■vertical side, ■horizontal side, ■vertical side + horizontal side, or ■vertical side + vertical side. . In addition, the hooking piece of the convex scale of the corresponding bender head is locked to the fixed bender head in the center, and the movable bender head is moved to align the graduations of the convex scale with the diameter graduations of the long object. If you do so, the bender will be set in place.

In this type of bending, there is no need to consider corrections due to differences in the diameter of the long object or bending pattern as the amount of movement of the bender head, and the values of the vertical and horizontal sides are used as is as the amount of movement of the pengu head. There is no need to perform complex calculations, so the bender head can be set accurately and quickly in a predetermined position, and the bending process can be performed with high efficiency.

Further, there is no occurrence of defective products due to incorrect calculation of the amount of movement of the bender head, and processing can be performed with a high yield.

Further, in this invention, since the structurally small sliding clamp clamps and conveys the long object, one bending process can be performed at a position close to the bender head. Therefore, it is possible to easily bend an extremely short side of about 80 m², and it is also possible to process sufficiently long hoop lines, thereby promoting thinning of the wall structure.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view of a continuous bending apparatus for long objects according to the present invention, and FIGS. A cross-sectional view of the continuous bending device, FIG. 4(A),
(B) shows the movement of the bending roller in the bending process,
A schematic front view and a schematic left side view of the bender head; FIGS. 5 and 6 are a partial plan view and a partial front view of the Mbe bending apparatus for a long object around the slider; FIG. Along the line ■-■. A schematic cross-sectional view of a continuous bending device for long objects, FIG. 8 is a partially broken side view of the clamp mechanism, and FIG.
14 Ha, '14 B r14 (F) ■-rK
Figure 10 shows the convex and scale plate.
A broken plan view of a continuous bending device for long objects, Part 1! The diagram is
Figure 12 is a front view of the bending pattern table attached to the control box. Figure 12 is a schematic diagram showing the relationship between the external dimensions of a long object and the distance between the bender and the radius. Figures 13 (A) and (B) are , a schematic diagram showing the relationship between the apparent length of the end of a long object in right angle bending and hook bending and the length at the axis. Figure 14 shows the scale plate attached to the left bender head. FIG. 15 is a perspective view of a scale plate attached to the right bender head. FIGS. 16 (A) to (F) are continuous bending of a long object of the present invention during bending of a hoop muscle. Schematic operation diagram of processing device FIGS. 17(A) to 17(F) are schematic operation diagrams of a known five-head type continuous bending device for a long object in bending a hoop muscle. 10: Continuous bending device for long objects, 12: Main frame, 14 (14-1 to 14-3): Bender head, 18 = Drive shaft, 18 Varnish sliding clamp, 22: Center roller for bender (Center guide), 23: Center roller color, 24
: Bending roller of bender head, 25.70.72
Niji Linda, 2B, 71, 73: Piston, 38:
Crank arm, 40.46: gear, 42.50: motor, 48 = reinforcing bar (long object), 49: position detection means, 53
: Encoder, 58: Clamp mechanism, 80: Clamp mechanism shielding block, 82: Clamp mechanism press block, 74: Press mechanism, 86: Positioning stopper, 88
: Auxiliary holder 92 (92-1, 92-2): Convex, 93 (93-1, 93-3): Convex scale, 93-1a, 93-3a two scales have one hook at the tip, 9B: center Hook piece on bender head, 8
8: Control box, 100: Bending pattern table, 102 (102-1, 102-3): X cable plate, 104 (104-1, 104-1", 1
04-3, 104-3'): X K-At Scale on the freight. Applicant Ishihara Machine Industry Co., Ltd.

Claims (4)

[Claims] (1) Three benders arranged in parallel in the longitudinal direction of the main frame, each equipped with a center guide that is arranged almost horizontally and can move forward and backward in the axial direction, and a bending roller that rotates upward around the center guide. In a continuous bending machine for long objects equipped with a head, the left and right bender heads are movably arranged to sandwich the fixed central bender head among the three bender heads, and hold the long object between them. , the sliding clamp that conveys
It is slidably installed on the main frame, and the convex scale is attached to the left and right movable bender heads so that the tip of the scale can be locked to the central bender head, and is marked with scales according to the diameter of the long object. The scale plate can measure its scale and the scale of the convex,
A continuous bending device for long objects, characterized by being installed on left and right movable bender heads. (2) The continuous bending apparatus for long objects according to claim 1, further comprising a bending pattern table showing bending patterns. (3) The continuous bending apparatus for long objects according to claim 2, wherein the moving distance of the left and right movable bender heads is displayed on the scale plate in correspondence with the symbol of the bending pattern illustrated in the bending pattern table. . (4) A scale plate for continuous bending of long objects, on which a scale corresponding to the diameter of the long object and a moving distance of the bender head according to the type of bending pattern are displayed.