JPH0339928B2 - - Google Patents

Description

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

Conventional technology When changing the side guide spacing at a conveyor corner, the length of the guide changes as the curvature of the corner changes as the spacing changes, so it is not enough to simply move the guide in parallel like in the straight section. Unachievable.

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 and diameter of the transported object. .

Problems to be Solved by the Invention The above-mentioned conventional method for switching the corner side guides is such that when conveying a wide variety of articles, the corner side guides of various types are set at intervals according to the width diameter of each article. 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 provides an automatic conveyor guide switching device that can automatically switch the corner side guide interval by simply pressing a button without replacing the side guides. It is something.

Means for Solving the Problems Means for solving the above problems will be explained using FIG. 1 corresponding to the embodiment.

Conveyor guide corner inner side guide 1
is made of a flexible material, and one end thereof is provided so as to overlap with the linear inner side guide 3. Arms 8 of the same length are each pivotally mounted between the corner inner side guide 1 and an arm attachment pin 9 which is erected in a concentric arc shape inside the corner. Furthermore, a displacement ring 15 is provided for swinging the arm 8 all at once around the pin 9 to change the arc diameter of the inner side guide 1, and a driving means for rotating the displacement ring by a selected arbitrary amount is provided. Established.

Operation When the drive means is driven by a suitable control means to rotate the displacement ring 15 by a selected amount,
The arms 8 swing all at once around the pin 9, and the pivot point with the inner side guide 1 at the tip of each arm always traces a locus located on the same arc, changing the arc diameter. The corner diameter of the guide 1 can be changed by a selected amount. Furthermore, as the arc diameter of the corner portion 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.

Embodiments Hereinafter, preferred embodiments of the present invention will be described in detail based on the drawings.

In FIG. 1, reference numeral 1 denotes a corner inner side guide of the conveyor guide, which is made of a flexible material such as synthetic resin, and one end of which overlaps with the straight 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 part 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 attached to the pins 9. The other end of the arm 8 is pivotally connected to the corner inner side guide 1. Then, the displacement ring 1 is placed concentrically with the corner part so as to cross the arm 8.
5 is rotatably held by guide rollers 17. A groove 1 is provided in the displacement ring 15 at a location where it intersects with the arm 8 as a means for guiding engagement between the arm and the displacement ring.
6, and a roller 10 provided on the arm 8 is engaged with the groove 16. With this configuration, when the displacement ring 15 is rotated, the arms 8 are rotated about the pins 9 via the rollers 10, and the trajectory of the other end of each arm 8 is the same circle that is concentric with the corner. Located on the circumference. Therefore, the inner guide 1 connecting the other end of each arm 8 has a displacement ring 15.
By rotating the corner, the corner diameter can be changed arbitrarily.

Reference numeral 20 designates a self-locking air cylinder (an intermediate stopable air cylinder) as a displacement ring rotation drive means provided on the machine frame, and a bracket 18 fixed to the displacement ring 15 is pivotally connected to a rod 19 of the air cylinder. There is. The displacement ring 15 is provided with a plurality of protrusions 21, and the protrusions 21 together with a limit switch 22 set the switching position of the corner guide interval, and the position can be changed depending on the type of the transported object A. is set. 22 is a limit switch that senses the protrusion 21;
They are fixed to the machine frame in correspondence with the projections 21, respectively. Each of the limit switches 22 is electrically connected to the air cylinder drive circuit via a push button switch provided with a control section for each type of conveyed object having a different width.

Note that the displacement ring driving means is not limited to the above-mentioned self-locking air cylinder, and may be any type such as a motor or an electromagnet.In short, the displacement ring driving means is not limited to the above-mentioned self-locking air cylinder, but may be any type such as a motor or an electromagnet. Any device that can control the rotational drive of the displacement ring may be used.

Further, the means for guiding the engagement between the arm 8 and the displacement ring 15 is not limited to the above-described one, and for example, the arm 8 may be held between guide rollers provided at intervals on the displacement ring. .

With the above structure, when changing the guide interval at the corner, press the pushbutton corresponding to the desired interval, and the self-locking air cylinder 20 will operate, causing the displacement ring 15 to rotate and raise the protrusion. 21 presses the limit switch 22. 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, as the displacement ring rotates, the arm 8 rotates around the pin 9, and since the corner inner guide 1 slidably attached to the other end of each arm is flexible, it can be bent freely and follows the corner. Then, 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 also changes depending on the radius of the corner portion, but the length change is adjusted by the overlapping joint. Also,
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,
By simply operating a desired switch such as a push button, the inner corner side guide is moved parallel to the outer side guide, and the interval between the corner guides is automatically adjusted according to the width of the transported object A. Since it can be switched, the switching time can be shortened.
In addition, changes in the length of the corner inner guide due to changing the guide interval are absorbed by the joint, so even if the length changes, there will be no gap between the corner inner guide and the straight inner guide. , or the corner inner guide does not bend in a zigzag manner.

In addition, it is economical because there is no need to have a large number of corner guides set according to the width and diameter of the conveyed object as in the conventional case.

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

[Brief explanation of drawings]

FIG. 1 is a plan view of a conveyor guide switching device showing an embodiment of the present invention, and FIG. 2 is a side view thereof. 1... Corner inner side guide, 2... Outer side guide, 3... Straight inner side guide,
4... Overlap joint, 7... Compression spring, 8... Arm, 9... Pin, 15... Displacement ring, 20... Cell top air cylinder, 2
1... Protrusion, 22... Limit switch, A...
Object to be transported.

Claims (1)

[Scope of Claims] 1. An inner side guide of the corner portion of the conveyor guide is formed of a flexible material, and one end thereof is provided so as to overlap with the inner side guide of the straight portion, and an arbitrary circular arc shape concentric with the corner portion is provided inside the corner portion. A plurality of arm attachment pins are arranged upright at 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, 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. An automatic conveyor guide switching device characterized in that the side guide spacing at a corner section is automatically switched. 2. 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. An automatic corner conveyor guide switching device according to scope 1. 3. Claim 1 or 2, wherein the driving means is a self-locking air cylinder.
Conveyor guide automatic switching device for corner sections as described in Section 2.