JPS61291310A - Automatic conveyer guide change-over device in corner section - Google Patents

Abstract

PURPOSE:To automate the change-over of intervals of guides, by providing such an arrangement that an inner side guide made of flexible materials in a corner section of a conveyer guide is overlapped at one end with an inner side guide in a linear section of the conveyer guide to allow the corner section inner side guide to be displaced. CONSTITUTION:Desired guide intervals are inputted by manipulation of a button, and therefore, a self-lock cylinder 20 is actuated to rotate a displacing ring 15. With this arrangement a projection 21 presses a limit switch 22. When the limit switch 22 corresponding to the selected push button is depressed, the cylinder 20 and the displacing ring 15 are stopped. Due to the rotation of the displacing ring 15 during this period, an arm 8 rotates around a pin 9 so that an inner side guide 1 in a corner section of the conveyer guide is radially displaced to change the intervals of guides. With this arrangement it is possible to automate the change-over of intervals of guides.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention automatically adjusts the side guide spacing at the corners of a conveyor guide that guides all conveyed objects on a conveyor according to the size of the conveyed objects by pressing a button. This invention relates to an automatic conveyor guide switching device that can be changed automatically.

[Conventional technology] Changing the side guide spacing at the conveyor corner section is
As the curvature of the corner portion changes as the spacing changes, the length of the guide also changes, so this cannot be achieved by simply moving the guide 1,000 rows as in the case of straight sections.

Therefore, conventionally, the side guide spacing at the corner portion was changed by replacing the entire side guide with a side guide having an appropriate spacing depending on the width diameter of the transported object.

Problems to be Solved by the Invention The above-mentioned conventional method for switching the side guides at the corner section is difficult to use when transporting a wide variety of articles. There is a problem in that a guide must be kept on hand at all times. Furthermore, since the entire side guide is replaced, it takes a lot of time to change the side guide interval in response to a change in the transported article, reducing work efficiency.

Therefore, in order to solve the above-mentioned problems, the present invention aims to provide an automatic conveyor guide switching device that can automatically switch the corner side guide interval by simply pressing a button without having to replace the side guides. Means for solving the above-mentioned problems will be explained with reference to FIG. 1, which corresponds to an embodiment.

A corner inner side guide 1 of the conveyor guide is made of a flexible material, and one end thereof is provided so as to overlap with a straight inner side guide 3. Arms 8 of the same length are each pivotally mounted between the corner inner side guide 1 and a double arm mounting pin 9 which is erected in a concentric arc shape inside the corner. Further, a relative displacement ring 15 is provided for swinging the arm 8 around the pin 9 in unison to change the arc of the inner side guide 1, and the displacement ring 'ft is rotated by a selected arbitrary amount. A driving means was provided.

Operation 1: When the drive means is driven by a suitable control means and the displacement ring 15 is rotated by a selected amount, the arms 8 swing all at once around the bin 9, and the inner side guide 1 at the tip of each arm rotates. Since the pivot points of the inner side guide 1 always draw a locus located on the same arc and change the arc, the corner diameter of the inner side guide 1 can be changed only at the selected edge. Further, as the corner arc shape of the inner side guide 1 changes, the length of the corner portion also changes, but the difference in length is absorbed by the overlapping portion with the straight inner side guide 3.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described in detail below with reference to the drawings.

In Fig. 1, reference numeral 1 denotes the inner side guide at the corner of the conveyor guide, which is made of a flexible material such as synthetic resin.
One end thereof overlaps with the straight section guide 3. The overlapping portion constitutes an overlap joint 4, and the corner inner side guide 1 is regulated by the pin 6 of the straight side guide 3 so that it can slide within the range of the elongated hole 5. Further, the corner inner side guide 1 is constantly pulled in the direction of the straight portion guide 3 by a compression spring 7. 2 is an outer side guide.

A plurality of arm attachment pins 9 are arranged upright inside the corner part at arbitrary intervals in an arc shape concentric with the corner part, and the ends of arms 8 having the same length are pivotally connected to the pins 9. The end of the arm 8 is pivotally connected to the corner inner side guide 1. The displacement ring 15 is rotatably held by a guide roller 17 so as to cross the arm 8 and concentrically with the corner portion. #1116 is formed on the displacement ring 15 at a location where it intersects with the arm 8 as an engagement guide means between the arm and the displacement ring, and the roller 10 provided on the arm 8 is fully engaged in the groove 16.

With this configuration, when the displacement ring 15 is fully rotated, the arms 8 rotate around the bin 9 via the rollers 10, and the locus of the pond end of each arm 8 follows the same circumference that is concentric with the corner. located above. Therefore, the corner diameter of the inner guide 1 connecting the end portions of each arm 8 can be arbitrarily changed by rotating the displacement ring 15e.

20! - is a self-locking air cylinder (an intermediate stopable air cylinder) as a displacement ring rotation drive means provided on the machine frame, and the bracket 18 fixed to the displacement ring 15 is pivotally attached to the rod 19 of the air cylinder. are doing.

The displacement ring 15 is provided with a plurality of protrusions 21, and the protrusions 21 are used together with a limit switch 22 to set the switching position of the corner guide interval. The location is set. 22 is a limit switch that senses the protrusion 21;
1, each is fixed to the machine frame. Each of the limit switches 22 is set for each type of conveyed object having a different radius. III. It is electrically connected to the drive circuit of the air cylinder through a push button switch provided with four parts.

The displacement ring driving means is not limited to the above-mentioned self-secure air cylinder, but may be any type such as a motor or an electromagnet.In short, the displacement ring can be driven by a switch means such as a push button provided corresponding to a predetermined position of the article. Any device that can control rotational drive may be used.

Further, the means for guiding the engagement between the arm 8 and the IJ song 5 is not limited to the above-mentioned one, but for example, the arm 8 may be held between guide rollers provided at intervals on a displacement ring. Good too.

With the above structure, when changing the guide interval at the corner, press the push button corresponding to the desired interval, the self-locking air cylinder 20 will operate, the displacement ring 15 will rotate, and the protrusion will be raised. 21 is the limit switch 22
t-press. When the limit switch 22 corresponding to the selected pushbutton is pressed, the self-locking air cylinder stops its operation and the displacement ring 15 stops. During this time, the arm 811 rotates around the bin 9 as the displacement ring rotates, and the corner inner guide 1, which is slid on the bent end of each arm, is flexible and can be freely bent and moved along the corner. By changing the radius, the corner side guides can be switched to a desired spacing. At this time, the length of the inner guide 1 will also vary depending on the radius of the corner portion, and the length change will be adjusted by the overlapping ratio. Moreover, since the inner guide 1 is always pulled by the straight inner guide 3, it is not bent midway.

Effects Since the present invention is configured as described above, simply by operating a switch such as a desired IK push button, the inner side guide of the corner portion is moved in advance with respect to the outer side guide and the transported object A is moved. Since the interval between the corner guides can be automatically changed by 4JJ depending on the medium diameter, the switching time can be shortened. In addition, changes in the length of the corner inner guide caused by changing the guide interval are absorbed by the inner corner guide, so even if the length changes, there is a gap between the corner inner guide and the straight inner guide. or the inner corner guide will not bend in a zigzag manner.

Furthermore, it is economical because there is no need to have a large number of corner guides set according to the diameter of the conveyed object as in the past.

As described above, the present invention has remarkable effects that could not be predicted from the prior art.

[Brief explanation of the drawing]

Claims (1)

[Scope of Claims] 1) The inner side guide of the corner part of the conveyor guide is formed of a flexible material, and one end is provided so as to overlap the inner side guide of the straight part, and the inner side guide of the corner part is arranged in an arc shape concentric with the corner part. A plurality of arm mounting pins are arranged upright at arbitrary intervals, and arms of the same length are each pivotally connected between the pins and the inner side guide of the corner portion, and the arms are arranged so as to cross the arms. A displacement ring formed concentrically with the corner portion is rotatably provided at the corner, an engagement guide means for the arm and the displacement ring is provided at a location where the displacement ring and the arm intersect, and the ring is rotated by a drive means. 1. A conveyor guide automatic switching device characterized in that the side guide interval at a corner portion is automatically switched by switching the side guide interval at a corner portion. 2) A patent claim characterized in that the engagement guide means between the arm and the displacement ring comprises a groove formed in the displacement ring and a rotatable roller provided on the arm that engages with the groove. 3) An automatic corner section conveyor guide switching device according to claim 1, wherein the driving means is a self-locking air cylinder. Device