JPH11179458A - Carrying in/out and transfer positioning device for work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carrying in/out and transfer positioning device for a work which integrates the carrying in and out devices for the work, slims the whole device to realize the cost reduction and improves the positioning precision of the work. SOLUTION: Carrying in/out conveyers 1 which extend from a carrying in side to a carrying out side retractable, on work support tables 3, 4 are provided in parallel to the advancing direction, the work support table 4 is provided with plural deceleration sensors 5 to decelerate a conveyer speed approaching to and in parallel to the carrying in.-out conveyers 1, a pin gage PG to fix- position a work W and a drawing clamp means 6, in which the work W is clamped, after the work W is stopped at a prescribed position and a corner part of the work W is abutted on the pin gage PG to make it freely be positioned while minutely adjusting in the advancing direction and the direction orthogonally crossing thereto.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work loading / unloading and transfer positioning apparatus for a bending machine such as a panel bender.

[0002]

2. Description of the Related Art Conventionally, a front gripper of a bending machine requires a carry-in gripper and a carry-out conveyor for loading a workpiece on the table with a U-axis. For example, the work support table is divided into six sections, and the table has a structure with a large gap on the upper surface (see FIG. 4A). Is not on a single line but is on a crank-shaped passage (Fig. 4
(See (b)).

[0003]

However, in the above-mentioned conventional example, separate devices for carrying in and carrying out are required,
Therefore, a drive unit is required separately, such as an AC motor and a geared motor. In addition, since the table is divided into a number of parts, the number of parts is large, and the work is caught in the gap between the tables. There is a problem that poor accuracy of the product or the product easily occurs.

The present invention has been made in view of the above points, and integrates a work loading / unloading device, reduces the number of divided work support tables, and reduces the number of parts.
Work loading / unloading that realizes cost reduction by slimming down the entire device and further improves work positioning accuracy
It is an object to provide an unloading and transfer positioning device.

[0005]

The present invention can solve the above-mentioned problems by providing the following constitution.

(1) A loading / unloading conveyor extending from a loading / unloading side to a loading / unloading side on a work supporting table is provided in parallel with the traveling direction, and the loading / unloading conveyor is approached and parallel to the work supporting table. A plurality of deceleration sensors that reduce the conveyor speed, a pin gauge that fixes and positions the work, and a workpiece that stops at a predetermined position, clamps the work, and fine-adjusts it in the traveling direction and the direction perpendicular to the traveling direction to adjust the corners of the workpiece A work pull-in / carry-out and transfer positioning device, characterized in that it has a pulling clamp means for abutting the pin against the pin gauge for positioning.

(2) The work loading / unloading / transporting positioning apparatus according to the above (1), wherein the work positioning means has a stop sensor for issuing a work stop signal.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below.

FIG. 1 is a plan view of a main portion showing an embodiment of a work loading / unloading / transporting positioning apparatus according to the present invention. FIG. 2 is a perspective view showing one configuration example of a pulling clamp means of the above. FIG. 3 is a plan view of an essential part showing an example of operation of the above-mentioned pulling clamp means, FIG. 4 (a) is a plan view of the essential part of a conventional example, and FIG. It is.

Referring to the drawings, 1 is a carry-in / out conveyor, 3 and 4 are work support tables, 5 is a deceleration sensor, 6 is a pulling clamp means, and the carry-in / out conveyor 1 is made up of a belt conveyor. Is attached with a magnet for preventing displacement of the work W, and is further moved up and down by a lifting device (not shown).
4 It is possible to appear and disappear up to the upper pass line,
The work support table 4 is provided with three types of deceleration sensors 5 (for small work, medium work, and large work) as shown in FIG. 1, and can respond finely to the size of the work. Reference numeral 6 denotes a pulling clamp means. The pulling clamp means 6 comprises an upper clamper 8 and a lower clamper 9, and the lower clamper 9 is a lifting cylinder 1
0 and has a conveyor stop sensor 7,
A pulling cylinder (not shown) in the Y direction is provided as a pair with an LM guide (not shown), and the transfer speed of the work W on the work support table 4 is adjusted by the speed reduction sensor 5 to reduce the speed. Next, the work W is stopped at a predetermined position by transmitting and receiving signals between the conveyor stop sensor 7 in the pulling clamp means 6 and the numerical controller, and the work W
Are stopped by the pulling clamp means 6 after stopping, and are finely adjusted in the X and Y axis directions so that the corners of the workpiece W abut against the pin gauge PG to be freely positioned.

In addition, regarding other symbols, BM is a bending machine, T1 is a carry-in table, T2 is a carry-out table, and M is a manipulator. The pin gauge PG is also referred to as a reference pin and is a stop reference position (origin) of the work W. (See FIG. 3), and t in FIG.
1 to t6 are work support tables, and U is a U-axis loading gripper.

That is, according to the present invention, the loading / unloading tables T1 and T2 and one loading / unloading conveyor 1 are arranged in a straight line.
By adding the X-axis and Y-axis pulling functions to the pulling clamp means 6, the conventional U-axis can be reduced.

The operation will be described based on the above configuration.

The work W is transferred from the carry-in table T1 onto the conveyor (the carry-in / carry-out conveyor 1), and the work W is transferred to the work support table 3 by the carrying action of the conveyor.
4 is transferred. And this loading / unloading conveyor 1
Since a magnet (Mg) is attached to the back side of the belt, it is possible to prevent a workpiece made of a magnetic material from being displaced on the conveyer. A plurality of deceleration sensors 5 (for small work, medium work, and large work) for reducing the moving speed of the work W arranged side by side in the traveling direction (X axis) on the support table 4 are provided in advance with the size of the work W. When the work W moves on the work support table 4 and reaches a predetermined deceleration sensor position, a deceleration signal is transmitted to a conveyor drive control device (not shown),
A deceleration operation is performed in accordance with a command from the conveyor drive control device (not shown), and moves to the position of the pulling clamp means 6 provided along the end surface reference of the work W, and the work W is moved into the pulling clamp means 6. When the conveyor reaches the conveyor stop sensor 7, a signal is exchanged between the conveyor stop sensor 7 and the conveyor drive control device, and the carry-in / out conveyor 1 is stopped, and the carry-in / out conveyor 1 is stopped.
Is pulled down from the upper surfaces of the work support tables 3 and 4, and at the same time, the stopped work W is attracted and clamped by the clamp means 6, and the clamped work W is slightly moved along the X-axis and the Y-axis to abut the pin gauge PG. The contact positioning is performed to set the origin, and the final positioning operation of the work W is completed.

When the positioning of the work W is completed, the work W is clamped from above and below by the manipulator M, and the work W is supplied to the bending machine BM main body, positioned and subjected to bending. After the processing is completed, the work W is again transferred onto the carry-in / carry-out conveyor 1 by the manipulator M and transferred to the carry-out table T1 by the carry-in / carry-out conveyor 1.

In the above description, the upper clamper 8 is fixed, and only the lower clamper 9 is of the up-and-down type. However, the upper clamper 8 may be provided with an ascending / descending cylinder and may be clamped up and down together with the lower clamper 9.

Further, it goes without saying that the deceleration sensor may be either a contact type or a non-contact type.

[0018]

According to the present invention, since the work loading / unloading conveyor is integrated, the loading device (U
The work support table itself does not need to be divided by the U-axis, so that the problem that the work is caught in the groove (gap) and causes a trouble is eliminated. That is, the number of divisions of the work supporting table is reduced, the number of parts is reduced, the entire apparatus is slimmed down, cost reduction is realized, and furthermore, a plurality of deceleration sensors corresponding to the work dimensions are arranged, and a conveyor stop sensor is provided. The work can be positioned at a predetermined position (origin setting) by a pulling clamp means composed of a clamp, a pin gauge (a reference pin), and the effect of enabling accurate bending.

[Brief description of the drawings]

FIG. 1 is a plan view of a main part configuration showing an embodiment of a work loading / unloading transfer positioning device according to the present invention.

FIG. 2 is a perspective view showing one configuration example of the pulling clamp means according to the first embodiment;

FIG. 3 is a plan view of an essential part showing an example of the operation of the above-mentioned pulling clamp means.

FIG. 4 (a) is a plan view of a main part of a conventional example, and FIG. 4 (b) is an explanatory view showing a loading / unloading path of the conventional example.

[Explanation of symbols]

 Reference Signs List 1 carry-in / carry-out conveyor 3, 4 work support table 5 deceleration sensor 6 pulling clamp means 7 conveyor conveyor stop sensor 8 upper clamper 9 lower clamper 10 lifting cylinder BM bending machine M manipulator PG pin gauge T1 carry-in table T2 carry-out table U U-axis carry-in Gripper W Work t1-t6 Work support table

Claims (2)

[Claims] 1. A loading / unloading conveyor extending from a loading / unloading loading side to a loading / unloading side on a work supporting table is provided in parallel with the traveling direction, and the loading / unloading conveyor is approached to and parallel to the loading / unloading conveyor on the work supporting table. Plural deceleration sensors that reduce the conveyor speed, pin gauges that fix and position the work, clamp the work after the work stops at a predetermined position, and fine-adjust the work in the traveling direction and the direction perpendicular to the traveling direction to adjust the corners of the work. A loading / unloading / transferring / transporting positioning device for a work, comprising a pulling clamp means capable of abutting and positioning the pin gauge. 2. The work loading / unloading transfer positioning device according to claim 1, wherein the pulling clamp means has a conveyor stop sensor for issuing a work stop signal.