JP3061575U - Guide Roller Positioning Device for Reinforcing Bending Machine - Google Patents

Abstract

(57) [Summary] [Problem] Anyone can easily set a moving distance of a guide roller for clamping a reinforcing bar to a main roller according to a diameter of a reinforcing bar, and at the same time, a guide roller of a rebar bending machine with high accuracy is provided. A positioning device. SOLUTION: A main roller 1 and a guide roller 4A,
The rebar 5 is inserted between the guide rollers 4A and 4B, and the guide rollers 4A and 4B press the rebar 5 by the advancing and retreating means provided on the roller arms 6A and 6B of the guide rollers 4A and 4B.
In a reinforcing bar bending machine that bends the reinforcing bar 5 by 6, the rods 6A and 6B are provided with rods 8A and 8B protruding outward from the on-board stopper 9. Movement stoppers 10A and 10B are provided on the protruding portions of the rods 8A and 8B. Rod 8
A, 8B between the stoppers 10A, 10B and the on-board stopper 9, the main roller 1 and the guide rollers 4A, 4B.
Spacers 11A and 11B having a thickness capable of forming a gap 13 having the same distance as the moving distance 12 of the guide roller for holding the reinforcing bar 5 inserted between the guide rollers 4A and 4B between the main roller 1 and the guide roller 4A and 4B are detachably interposed. I do.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a bending machine for bending a reinforcing bar in a circular or arc shape, and more particularly, to a guide roller positioning device in a reinforcing bar bending machine.

[0002]

[Prior art]

 As shown in FIG. 3, a guide roller positioning device in a conventional rebar bending machine includes a main roller 5 'sandwiched between rebars 5' on a board 3 'of a main body 2', and a main roller 5 'sandwiched between the main roller 2 and the feeder. Two guide rollers 4 'are provided at an opposite portion of the reinforcing bar 5' and at an inlet side of the reinforcing bar 5 'side by side with the main roller 1' so as to insert the reinforcing bar 5 'straight. A hydraulic cylinder 7 'is provided on each roller arm 6' of 4 ', and a screw rod 8' is provided at the rear of the roller arm 6 'so as to protrude outward from a stopper 9' on the board. The gap adjusting nut 10 'was screwed into the protruding portion.

[0003]

[Problems to be solved by the invention]

 Conventionally, when setting a reinforcing bar in a rebar bending machine, after inserting a reinforcing bar 5 'between the main roller 1' and the guide roller 4 ', the guide roller 4' is advanced by a hydraulic cylinder 7 ', and the reinforcing bar 5' is It is sandwiched between roller 1 'and guide roller 4'. The guide roller 4 'moves forward until the gap adjusting nut 10' provided on the screw rod 8 'hits the on-board stopper 9'.

Accordingly, if the diameter of the reinforcing bar 5 ′ is different, the moving distance of the guide roller 4 ′ must be changed, and each time the gap adjusting nut 10 ′ is rotated, the gap adjusting nut 10 ′ is rotated. ', And had to determine the moving distance of the guide roller 4'.

[0005] However, this gap adjustment work is very troublesome and inefficient, and requires high accuracy. However, due to wear of the gap adjustment nut due to use, the same gap adjustment work is not necessarily performed for each adjustment. The movement distance could not always be set, and there was a problem with accuracy.

In view of the above, according to the present invention, anyone can easily set the moving distance of the guide roller for holding the reinforcing bar between the main rollers according to the diameter of the reinforcing bar, and the guide for the reinforcing bar bending machine with high accuracy is provided. It is intended to provide a roller positioning device.

[0007]

[Means for Solving the Problems]

 In order to solve the above-mentioned problem, the present invention provides a reinforcing bar in which a reinforcing bar is inserted between a main roller and a guide roller, and a guide roller presses the reinforcing bar by an advancing / retracting means provided on a roller arm of the guide roller, and the bending bar bends the reinforcing bar. In the bending machine, a rod protruding outward from the on-board stopper is provided on the roller arm, a movement stopper is provided on a protruding portion of the rod, and the rod is provided between the movement stopper of the rod and the on-board stopper. Make sure that a spacer with a thickness that can form a gap that is the same distance as the guide roller's travel distance for holding the rebar inserted between the main roller and the guide roller between the main roller with the guide roller is removable. It is a feature.

According to the present invention having the above-described structure, the distance between the guide roller and the moving distance of the guide roller for holding the rebar inserted between the main roller and the guide roller between the rod movement stopper and the on-board stopper by the guide roller is reduced. Since a spacer with a thickness that can form the same distance is interposed, the movement stopper moves forward, and if the spacer comes into contact with the on-board stopper and the movement stopper stops, the guide roller connects the rebar to the main roller. It stops in the clamped state and can be prepared for bending of rebar.

Therefore, if a spacer having a thickness capable of forming a gap having the same distance as the moving distance of the guide roller is prepared in advance in accordance with the diameter of the rebar even if the diameter of the rebar is different, as in the past, It is not necessary to adjust the gap every time the diameter of the rebar is different, just replace the spacer.

[0010]

[Embodiment of the invention]

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing an embodiment of the present invention, and FIG. 2 is a sectional view of the same. In the drawing, reference numeral 1 denotes a main roller provided on the board 3 of the rebar bending machine main body 2, and a longitudinal groove 1 </ b> A is provided on a peripheral side of the main roller 1.

Reference numerals 4A and 4B denote guide rollers, and the guide roller 4A is provided at an opposite portion of the main roller 1 across the reinforcing bar 5 to be bent, and presses the reinforcing bar 5 against the main roller 1 to rotate the main roller 1. The rebar 5 is sent out. The guide roller 4B is arranged in line with the guide roller 4A in the direction of insertion of the reinforcing bar 5, and is provided at the entrance side of the reinforcing bar 5 of the guide roller 4A to guide the reinforcing bar 5 straight between the main roller 1 and the guide roller 4A. And moves the same as the guide roller 4A.

The guide rollers 4A and 4B are attached to roller arms 6A and 6B, and hydraulic cylinders 7A and 7B are provided on the lower surface of the rear portions of the roller arms 6A and 6B. The guide rollers 4A and 4B are provided by the hydraulic cylinders 7A and 7B. Goes back and forth.

One end of each of rods 8A and 8B is fixed rearward on the upper surface of the rear part of the roller arms 6A and 6B, and the other end of each of the rods 8A and 8B is mounted on a wall 3 of a wall-shaped stopper. 9 protrudes outward. The moving stoppers 10A and 10B are fixed to portions of the rods 8A and 8B protruding from the on-board stopper 9.

Further, spacers 11A and 11B are interposed between the on-board stopper 9 of the rods 8A and 8B and the movement stoppers 10A and 10B. The spacers 11A and 11B have an inverted U shape and are detachably fitted to the rods 8A and 8B.

When the spacers 11A and 11B are manufactured, the stopping positions of the guide rollers 4A and 4B when the guide rollers 4A and 4B are retracted are determined by the hydraulic cylinders 7A and 7B. The distance from the main roller 1 and the distance between the on-board stopper 9 and the moving stoppers 10A and 10B are determined.

Therefore, if the reinforcing bar 5 to be bent is inserted between the main roller 1 and the guide rollers 4A and 4B, the moving distance 12 for the guide rollers 4A and 4B to clamp the reinforcing bar 5 with the main roller 1 is known. If the gaps 13 having the same distance as the moving distances 12 of the guide rollers 4A, 4B are formed as spacers 11A, 11B having a thickness that can be formed between the on-board stopper 9 and the moving stoppers 10A, 10B, The spacers 11A and 11B can be used.

Therefore, the spacers 11A and 11B capable of responding to the diameter of the reinforcing bar 5 are manufactured in advance, and the spacers 11A and 11B having a thickness corresponding to the diameter of the reinforcing bar 5 are attached to the on-board stopper 9 and the moving stopper 10A of the rods 8A and 8B. , 10B, the same gap 13 as the moving distance 12 of the guide rollers 4A, 4B can be obtained. In the drawing, 14 is a drive motor for the main roller 1, 15 is a hydraulic pump for the hydraulic cylinders 7A and 7B, and 16 is a bending roller.

[0018]

[Effect of the invention]

 According to the present invention, only the spacer corresponding to the diameter of the reinforcing bar to be bent is interposed between the stopper on the board of the rod and the moving stopper, and the moving distance is equal to the moving distance for clamping the reinforcing bar to the main roller by the guide roller. Since a distance gap can be formed between the on-board stopper and the movement stopper, anyone can easily work, and fine adjustment of the gap adjusting nut is unnecessary as in the past, greatly improving the work efficiency. Also, since the spacer is only fitted to the rod, the spacer is not worn and the accuracy is high, and the same product can be manufactured by repeated use.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the device of the present invention.

FIG. 2 is a sectional view showing an embodiment of the device of the present invention.

FIG. 3 is a sectional view of a conventional device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main roller 2 Rebar bending machine main body 3 Board 4A, 4B Guide roller 5 Reinforcing bar 6A, 6B Roller arm 7A, 7B Hydraulic cylinder 8A, 8B Rod 9 On-board stopper 10A, 10B Moving stopper 11A, 11B Spacer 12 Moving distance of guide roller 13 gap

Claims (1)

[Utility model registration claims] 1. A rebar is inserted between a main roller and a guide roller, and the guide roller is pressed against the rebar by an advance / retreat means provided on a roller arm of the guide roller.
In rebar bending machines that bend rebars with bending rollers,
The roller arm is provided with a rod protruding outward from the on-board stopper, the rod has a movement stopper provided thereon, and is inserted between the rod movement stopper and the on-board stopper, between the main roller and the guide roller. A spacer having a thickness capable of forming a gap of the same distance as the guide roller moving distance for holding the provided reinforcing bar between the main roller with the guide roller, and being detachably interposed. Guide roller positioning device.