JPH0312731Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a multistage linear feeder in which a plurality of troughs are arranged in multiple stages.

[Prior art]

In multi-stage linear feeders, it is essential to apply vibration to the troughs in order to transfer parts, but the vibrations are transmitted to other troughs as a reaction force, causing noise and disturbances in the flow of parts. There is a problem.

Therefore, as a solution to this problem, a counterweight is fixed to the other end of the pair of leaf springs that support the trough, and the point of the leaf spring where the vibration is substantially zero, that is, the center of gravity, is supported. A balanced linear feeder that prevents vibrations from being transmitted to the body was developed in JP-A-Sho.
It is disclosed in Publication No. 58-20209 (Japanese Patent Application No. 57-82774).

[Problem that the invention attempts to solve]

Vibration as a reaction force is not transmitted to the support body, and vibration isolating materials such as vibration isolating rubber or springs are not required to prevent it, but vibration exciters, plate springs, counterweights, etc. are required for each trough. Since it is necessary to provide several important components, the overall size of the device increases, and it is also disadvantageous in terms of cost. In addition, since the trough and counterweight are supported in a suspended manner by a pair of vibrating leaf springs arranged parallel to each other at an angle,
A moment load is generated on the support, and it is difficult to completely prevent vibration.

This invention aims to provide a multi-stage linear feeder that can obtain a vibration-proofing effect while reducing the size and cost of the device.

[Means for solving problems]

This invention consists of a spring mounting frame 9 disposed on the side of an upright support plate 6 so as to be inclined in the front and back direction at a predetermined angle with respect to the horizontal direction; A pair of front and rear leaf springs 10a, 11a, 10b, 1 whose center of gravity is fixed at right angles to
1b, and the pair of front and rear leaf springs 10a, 11a,
At the upper and lower ends of 10b and 11b, the leaf spring 1
Spring mounting bases 13a, 13b, 18c, 1 fixed perpendicularly to 0a, 11a, 10b, 11b
The upper trough 3 and the lower trough 4 supported via the trough 8b, the electromagnet 21 fixed to one of the troughs 3 or 4, and the electromagnet 21 corresponding to the other trough 4 or 3 through a predetermined gap. It consists of a vibrator consisting of a fixed suction core 22,
The upper trough and lower trough are vibrated in opposite phases to each other, thereby canceling out the vibrations and obtaining a vibration-proofing effect without using a counterweight.

[Effect]

The centers of gravity of a pair of front and rear leaf springs are fixed to a support plate erected on the base, and the upper and lower ends of the leaf springs are fixedly supported, and the electromagnet of the exciter is attached to each of the upper and lower troughs. A suction core is placed opposite the trough to apply vibrations in opposite directions to each trough, and the vibrations at the top and bottom ends of the leaf spring are canceled out at the center of gravity.

〔Example〕

1 and 2 are a plan view and a side view showing an example of the use of the multi-stage linear feeder of this invention, A is a multi-stage bowl feeder, and has a plurality of bowls 1 and 2, for example, two bowls 1 and 2, each of which has a .

Multi-stage linear feeder B feeds parts from multi-stage bowl feeder A to a subsequent automatic assembly machine such as an industrial robot.
Two troughs 3, 4 corresponding to each bowl 1, 2 of
These troughs 3 and 4 are mounted and supported on the sides of a support plate 6 erected on a base 5 in the following manner. A pair of front and rear mounting members 7a are attached to the side surface of the support plate 6,
A spring mounting frame 9 formed by overlapping two rectangular frame members 8a, 8a integrally with each other via a frame member 7b is fixed at a predetermined angle with respect to the horizontal direction, and the upper and lower sides of this spring mounting frame 9 are A pair of front and rear leaf springs 10a, 10b and 11 are arranged perpendicularly to the spring mounting frame 9.
a, 11b, and one pair of front and rear leaf springs 1.
The upper trough 3 is supported by 0a and 10b, and the lower trough 4 is supported by the other pair of front and rear leaf springs 11a and 11b.

Leaf springs 10a and 10b that support the upper trough 3
As shown in FIGS. 3 to 5, the upper ends thereof are fixed to spring mounts 13a and 13b fixed to the upper trough mounting plate 12 attached to the side surface of the upper trough 3 with bolts 14a and 14b, respectively. Then, attach the lower end to the front and rear end surfaces of the upper frame member 8a of the spring mounting frame 9 with bolts 15.
They are fixed at points a and 15b, respectively.

Leaf springs 11a and 11b that support the lower trough 4
has its upper end fixed to the front and rear end surfaces of the lower frame member 8b of the spring mounting frame 9 with bolts 16a and 16b, respectively,
Spring mounting bases 18a, 18 whose lower ends are fixed to the lower trough mounting plate 17 attached to the side surface of the lower trough 4
b with bolts 19a and 19b, respectively.

20 is an exciter for vibrating the upper and lower troughs 3 and 4, and is composed of an electromagnet 21 that is continuously excited and an attraction core 22 that is attracted to the electromagnet 21;
As shown in FIGS. 4 and 5, the electromagnet 21
The electromagnet 21 is attached to the lower trough mounting plate 17 via the attachment member 23, and the attraction iron core 22 is attached to the upper trough attachment plate 12 via the attachment member 24. It is installed. A cover 25 covers the vibrator 20 and is fixed to the side surface of the spring mounting frame 9.

In the above configuration, by continuously exciting the electromagnet 21 of the vibrator 20, a continuous attraction force is applied to the attraction iron core 22, and this attraction force and the plate spring 1
The repulsive elastic forces of 0a, 10b and 11a, 11b generate vibrations in opposite phases in the upper trough 3 and lower trough 4. Therefore, the parts carried from the bowls 1 and 2 of the multistage bowl feeder A to the troughs 3 and 4 of the multistage linear feeder B are sequentially transferred to the ends of the troughs 3 and 4 by the vibration.

By the way, according to the multi-stage linear feeder B described above, the vibrations generated in the upper trough 3 and the lower trough 4, respectively, are caused by the leaf springs 10a, 10b and 11a, 11b.
However, since the vibration phases of both troughs 3 and 4 are always in opposite directions, they cancel each other out at the spring mounting frame 9. Moreover, a pair of front and rear leaf springs 10a,
Since the directions of the vibrations transmitted from 10b, 11a, and 11b are on the same plane with respect to the spring mounting frame 9, component forces that generate moment loads are also canceled out. Therefore, the vibration applied by the vibrator 20 is substantially no longer transmitted to the support plate 6 via the spring mounting frame 9, and is no longer transmitted to the base 5 or the adjacent multi-stage bowl feeder A. ,
Further, substantially no moment load is generated on the support plate 6.

In addition, in this multi-stage linear feeder B, since the structure supporting the troughs 3 and 4 has a right-angled shape, that is, the upper and lower ends of the pair of front and rear leaf springs 10a, 10b and 11a, 11b are respectively attached to spring mounting bases. Since the spring mounting frames 13a, 13b and 18a, 18b are fixed at right angles to the spring mounting frame 9, the machining of the supporting parts becomes easy, resulting in high precision and low cost.
It is possible to easily change the transport direction by simply changing the direction of the trough mounting plates 12, 17 to which b is fixed.

The above is an explanation of the embodiment of this invention.
This invention is not limited to this, and various modifications can be made based on the technical idea of this invention.
For example, the number of troughs is not limited to two stages as shown in the embodiment, but may be increased every two stages, such as four or six stages, if necessary. In addition, in the embodiment, the upper trough 3
The leaf springs 10a, 10b supporting the lower trough 4 and the leaf springs 11a, 11b supporting the lower trough 4 were each separate, but the upper and lower troughs 3 and 4 are supported by the upper and lower ends of a pair of integrated front and rear leaf springs. , the center of gravity of the leaf spring may be fixed to the spring mounting frame 9. Furthermore, even if the types of parts supplied to the troughs 3 and 4 change, the fixing position of the leaf spring can be arbitrarily changed and attached to the spring mounting frame 9 so as to cancel out vibrations according to the mass of the parts.

[Effect of idea]

According to this invention, it is possible to obtain a vibration isolation effect without using a counterweight, and moreover, it is possible to apply vibration to two troughs with one set of important components such as a vibrator and a leaf spring. Therefore, the device can be made smaller, and the manufacturing cost per trough can be reduced, which is advantageous in terms of cost.
In addition, since the trough is supported in a right-angled configuration, it is only necessary to adjust the support part of the trough in the vertical direction. There is no restriction on a specific location in the front-rear direction as in the above, and the position can be freely selected by surrounding equipment, and parts can be supplied stably without speed unevenness over the entire length. Furthermore, since the trough can be attached horizontally to the support plate, when transporting long-legged parts such as bowls by hanging, the trough can be inserted inside the bowl of the bowl feeder, making it a highly versatile multi-stage linear feeder. I can do it.

[Brief explanation of drawings]

1 and 2 are a plan view and a side view showing an example of the use of the multi-stage linear feeder of this invention in combination with a multi-stage bowl feeder, and FIGS. 3 to 6 are drawings showing details of the multi-stage linear feeder of this invention. , FIG. 3 is a side view thereof, FIG. 4 is a plan view, FIG. 5 is a side view, and FIG. 6 is a side view of the vibrator. A...Multi-stage bowl feeder, B...Multi-stage straight feeder, 1, 2...Bowl, 3...Upper trough, 4
... lower trough, 5 ... base, 6 ... support plate, 8
a, 8b...Frame material, 9...Spring mounting frame, 10a,
10b, 11a, 11b...Plate spring, 12...Upper trough mounting plate, 13a, 13b, 18a, 18b
...Plate spring mounting block, 17...Lower trough mounting plate, 20...Exciter, 21...Electromagnet, 22...
Suction core.

Claims (1)

[Scope of utility model registration request] A spring mounting frame is arranged on the side of the upright support plate and is inclined in the front and back direction at a predetermined angle with respect to the horizontal direction, and a pair of front and rear plates that are orthogonal to the spring mounting frame and whose middle parts are fixed. a spring, an upper trough and a lower trough supported via spring mounts fixed perpendicularly to the leaf springs at the upper and lower ends of the pair of front and rear leaf springs; and an exciter consisting of a suction core fixed to the other trough in correspondence with the electromagnet through a predetermined gap. A multi-stage linear feeder characterized in that the vibrations of the plate springs are offset by the intermediate part of the leaf spring.