JPH0312422Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] Industrial application field The present invention relates to a fine adjustment jig used in a device for bending reinforcing bars.

BACKGROUND TECHNOLOGY As shown in FIG. 2, a conventional reinforcing bar bending device includes a fixed shaft 2 protruding from the center of a base 1, and a bending sleeve 3 inserted onto the fixed shaft 2. It's getting old. The bending sleeves 3 are prepared in various diameters so as to correspond to various curvature radii of the reinforcing bars S to be bent.

Reference numeral 4 denotes an actuation lever, which rotates about the fixed shaft 2 while always facing in the radial direction.

A bending roller 5 is provided at the inner end of the operating lever 4.
is attached, and rotates around the bending sleeve 3 which is fitted onto the fixed shaft 2 to bend the reinforcing bar S sandwiched between the bending sleeve 3 and the sleeve 3.

A stopper 6 is attached to the outer end of the operating lever 4, and is fitted into an adjustment hole 8 drilled along an adjustment plate 7 formed in a semicircular band around the fixed shaft 2. When it comes into contact with the inserted and fixed stopper pin 9, the actuating lever 4 is stopped at a predetermined rotation angle position, and the reinforcing bar S is bent at a predetermined angle.

Therefore, the bending angle of the reinforcing bar S is set by selectively inserting the stopper pin 9 into the adjustment hole 8.

Problems that the invention attempts to solve However, as is clear from Figure 3,
Since the spacing between the adjustment holes 8 has a certain distance dimension, the bending angle of the reinforcing bar S can only be set in stages, and there is a problem that an error occurs between the bending angle and the intended bending angle. Ta.

For this reason, if the adjustment holes 8 are opened closely and the intervals between them are narrowed, fine adjustments can be made, but the adjustment holes 8
If there is too much, not only the strength of the adjusting plate 7 becomes weak, but also there is a problem that continuous fine adjustment is still not possible.

The present invention was devised to solve the above-mentioned conventional problems, and its purpose is to provide an easy-to-use and inexpensive device that allows continuous fine adjustment without weakening the structural strength of the device. The purpose is to provide a fine adjustment jig.

[Structure of the invention] Means for solving the problem The fine adjustment jig for the reinforcing bar bending device of the invention includes a bending sleeve placed in the center of the base,
A bending roller rotates around the sleeve to bend the reinforcing bar sandwiched between the sleeve, an operating lever forcibly rotates the roller, and a bending roller that forcibly rotates the roller, and a bending roller that forcibly rotates the roller and bends the reinforcing bar by stopping the rotation of the operating lever. In a reinforcing bar bending device consisting of a stopper pin for setting a bending angle and a number of fine adjustment holes drilled in an adjustment plate so that the stopper pins can be selectively inserted, a fine adjustment jig is installed in the adjustment hole instead of the stopper pin. Set the tool body, attach the stopper plate to the body via the adjustment bolt, and adjust and set the axial movement amount of the adjustment bolt to finely adjust the position of the stopper plate and rotate the operating lever. It is characterized by adjusting the moving angle.

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

In FIG. 1, reference numeral 10 denotes a fine adjustment jig main body, which has a pin 11 protruding from its lower surface, so that it can be inserted into the adjustment hole 8 of the adjustment plate 7 and set at a predetermined position. .

The fine adjustment jig main body 10 has a bolt insertion hole 1.
2 is opened, and an adjustment bolt 13 is inserted through this. A stopper plate 14 is integrally attached to the tip of the adjustment bolt 13.

15 is an adjustment nut. In addition, in FIG. 2, 16 is a support plate.

Since the fine adjustment jig of this embodiment is configured as described above, the pin 11 of the fine adjustment jig main body 10
into the adjustment hole 8 located beyond the desired bending angle, and insert the fine adjustment jig main body 10 into the adjustment plate 7.
Set to .

Next, loosen the adjustment nut 15 to finely adjust the distance L between the fine adjustment jig main body 10 and the stopper plate 14, and precisely finely adjust the position of the stopper plate 14, that is, the bending angle of the reinforcing bar S. .

After completing the above preparation work for setting the bending angle, move the operating lever 4 in the direction of arrow A and return it as shown in FIG. The reinforcing bar S is inserted between the bending sleeve 3 and the bending roller 5.
The bent portion is positioned at the bending sleeve 3.

Next, when the operating lever 4 is rotated in the direction of arrow B, the bending roller 5 rotates around the bending sleeve 3, so that the reinforcing bar S sandwiched between the rollers is attached to the outer peripheral surface of the bending sleeve 3. As shown in FIG. 1 (see imaginary line in FIG. 2),
The stopper 6 of the operating lever 4 comes into contact with the stopper plate 14 and stops, and the reinforcing bar S is bent at an accurate angle.

[Effects of the invention] (1) The fine adjustment jig body is set in the adjustment hole, the stopper plate is attached to the lid body via the adjustment bolt, and the position of the stopper plate is finely adjusted using the adjustment bolt. With this structure, the stop position of the operating lever can be changed continuously, and the bending angle of the reinforcing bar can be set with high precision.

Furthermore, since the spacing between the adjustment holes can be increased, the strength of the adjustment plate can be maintained strong.

(2) It can be installed directly into conventional reinforcing bar bending equipment, and is inexpensive and easy to handle.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the fine adjustment jig of the present invention, Fig. 2 is a perspective view showing the entire conventional reinforcing bar bending device,
FIG. 3 is a partially enlarged perspective view. DESCRIPTION OF SYMBOLS 1... Base, 2... Fixed shaft, 3... Sleeve for bending, 4... Operating lever, 5... Bending roller, 6... Stopper, 7... Adjustment plate, 8... Adjustment hole, 9... ... Stopper pin, 10 ... Fine adjustment jig main body, 11 ... Pin, 12 ... Bolt insertion hole, 13 ... Adjustment bolt, 14 ... Stopper plate, 15 ... Adjustment nut, 16 ... Support plate, L... Spacing, S... Rebar.

Claims (1)

[Scope of utility model registration request] A bending sleeve placed in the center of the base, a bending roller that rotates around the sleeve to bend the reinforcing bars sandwiched between the sleeve, and an actuation lever that forcibly rotates the roller. and,
A reinforcing bar bending device comprising a stopper pin that stops the rotation of the operating lever to set the bending angle of the reinforcing bar, and a number of fine adjustment holes drilled in an adjustment plate so that the stopper pin can be selectively inserted, By setting the fine adjustment jig main body instead of the stopper pin in the above adjustment hole, attaching the stopper plate to the main body via the adjustment bolt, and adjusting and setting the axial movement amount of the adjustment bolt, the stopper plate can be adjusted. A fine adjustment jig for a reinforcing bar bending device, characterized in that the rotation angle of the operating lever is adjusted by finely adjusting the position.