JP3050167U - Rubber O-ring automatic transfer device - Google Patents

Abstract

(57) [Summary] (with correction) [PROBLEMS] To separate and take out O-rings individually without applying powder to rubber O-rings and without manual intervention, and to accurately position them at predetermined positions on a conveyor. The present invention provides a rubber O-ring automatic transfer device capable of performing the following. SOLUTION: This is a device for individually taking out, positioning, and transporting rubber O-rings from a hopper, and comprising: a belt conveyor 3 having a belt 5 on the surface of which pins 6 are erected at a constant pitch along a moving direction. A separation claw 8 is disposed along the inner bottom surface of the hopper 2, and separates an extra O-ring 1 from above the belt 5 into the hopper above the upper portion of the belt conveyor 3.
Are provided on both sides of the return portion 4 at the upper end of the belt conveyor 3, and O-ring drop prevention guides 7 are provided.
Is provided.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention separates and separates rubber O-rings (hereinafter simply referred to as O-rings) made of silicone resin, NBR, SBR, etc., even if they are entangled in a lump. The present invention relates to an O-ring automatic transfer device for transferring to an apparatus, a cleaning device, and the like.

[0002]

[Prior art]

 Conventionally, O-rings (especially JIS hardness A 10 to 60 degrees) were supplied into a hopper equipped with a vibrating feeder, and a conveyor was arranged near the feeder discharge port to discharge and transport the O-ring. Since the O-rings in the hopper are soft and entangled and are collectively formed, even if vibration is applied, the rubber elasticity of the hopper absorbs the vibrations, and the O-rings are individually separated and taken out on the conveyor. It was difficult.

[0003]

[Problems to be solved by the invention]

 For this reason, powder was applied to the O-ring to prevent entanglement between the O-rings and to improve the separability. However, since this method adhered the powder to the O-ring, it was used as a product. Was limited. On the other hand, powders were removed individually by hand to avoid adhesion of the powder, but when one was lifted up, multiple O-rings were connected and lifted up, and it took time and effort to separate them, resulting in poor workability.

[0004] As described above, conventionally, it has been extremely difficult to take out O-rings on a conveyor in a state where they are individually separated. An object of the present invention is to automatically separate an O-ring and take it out without applying any powder to the O-ring and manually positioning the O-ring in a predetermined position on a conveyor. An object of the present invention is to provide a transport device.

[0005]

[Means for Solving the Problems]

 The O-ring automatic transfer device of the present invention is a device for individually taking out O-rings from the hopper and positioning and transferring the O-rings, and has a belt on the surface of which pins are planted at equal pitches along the moving direction. A belt conveyor is arranged along the bottom surface inside the hopper. Separation claws are provided above the belt conveyor to remove extra O-rings from above the belt inside the hopper. A guide for preventing the ring from falling is provided, and an O-ring alignment conveyor is provided below the end of the guide for preventing the fall. The alignment conveyor has an O-ring positioning jig (hereinafter, simply referred to as a positioning jig) in which a conical head moves up and down through an opening provided in the belt.

[0006]

[Embodiment of the invention]

 Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic sectional view showing an example of the O-ring automatic transfer device of the present invention. In the figure, 1 is an O-ring having a hardness of 20 ° or more according to a JIS K6301 A-type hardness tester, and 2 is a hopper. The inside of the hopper 2 is filled with a large number of O-rings 1, and a belt conveyor 3 is disposed along the inclined bottom surface of the hopper 2, and a return portion 4 provided on the upper portion of the belt conveyor 3 is provided at the upper end of the hopper 2. Projecting from. On the surface of the belt 5 of the belt conveyor 3, pins 6 are planted at equal pitches along the moving direction. On both sides of the return portion 4, drop prevention guides 7 for preventing the O-ring 1 from dropping naturally are provided so as to cover the belt 5 from both sides along the movement direction of the belt 5.

In the vicinity of the upper edge of the hopper 2, a separating claw 8 is provided above the upper portion of the belt 5 for removing an extra O-ring 1 from the belt while leaving one O-ring 1 for each pin. Have been. Further, an alignment conveyor 9 for receiving the O-ring 1 is provided below the end of the fall prevention guide 7, and the alignment conveyor 9 positions the O-ring 1 which moves up and down through an opening provided in the belt. A jig 10 is provided.

FIG. 2 is an enlarged schematic cross-sectional view showing a separation claw 8 provided above the belt 5 and a part of the belt conveyor 3. A plurality of O-rings 1 are provided on one pin 6. If the O-rings are scratched or overlapped with each other, the remaining O-rings 1 are removed from the belt by the separating claws 8 except for one for each pin 6, and the O-rings 1 are removed one by one. They are taken out of the hopper 2 at equal pitch in order. The height of the pin 6 is 0.5 times or more and less than 2.0 times the wire diameter of the O-ring 1, and is particularly preferably 1.0 to 1.4 times. If the height of the pin 6 is less than 0.5 times the wire diameter of the O-ring 1, the O-ring 1 is likely to be caught incorrectly, and if it is 2.0 times or more, it is difficult to remove the extra O-ring 1 even by using the separation claw 8. Becomes

FIG. 3 shows the return portion 4 of the belt conveyor 3 and the alignment conveyor 9 installed below the return portion 4, (a) is a plan view, (b) is a side view of the return portion 4, (c) is It is sectional drawing which follows the center line of (a). The belt 5 of the belt conveyor 3 rolls downward at the right end of the return section 4 in FIG. At this time, in order to prevent the O-ring 1 from dropping off the belt conveyor 3, a drop-preventing guide 7 is provided along the belt on both sides of the return portion 4. 6 and further transported without falling. The belt conveyor 3 is turned on via a control device by a stop signal of a step motor (not shown) for driving the alignment conveyor 9, and detects the O-ring 1 installed near the positioning jig 10. OFF control is performed by a signal from the sensor 16 via a control device.

FIGS. 4 (a), 4 (b) and 4 (c) show a positioning jig 10 which moves up and down through an opening provided in a belt of the alignment conveyor 9 in the order of operation. When the O-ring 1 comes out of the fall prevention guide 7, as shown in FIG. 4A, it falls toward the head of the lower positioning jig 10. The dropped O-ring 1 is guided along the conical surface of the head of the positioning jig 10, and is accurately positioned at a predetermined position on the belt 13 of the alignment conveyor 9 as shown in FIG. As shown in FIG. 4 (c), the positioning jig 10 descends, and the belt 13 starts moving to the left in the figure. To drive the alignment conveyor 9, a step motor that receives a drive signal and moves stepwise by a predetermined distance can be used. The belt 13 is provided with an opening 14 that is long in the traveling direction, and the positioning jig 10 moves up and down through the opening 14 by the air cylinder 15. The shape of the head of the positioning jig 10 is preferably conical in order to reliably receive and accurately position the O-ring 1, but may be a polygonal pyramid.

The O-ring 1 in the hopper 2 is hooked on a pin 6 erected on the surface of the belt 5 of the belt conveyor 3, and each pin 1 is separated by a separation claw 8 provided above and above the belt conveyor 3. The surplus O-ring 1 is removed from the belt, leaving it separated, and is separated into individual pieces and conveyed to the return section 4 with equal pitch. When the O-ring 1 conveyed from the return part 4 falls at the end of the fall prevention guide 7 and the sensor 16 installed near the positioning jig 10 provided below detects the O-ring 1, the O-ring 1 is conveyed. After the conveyor 3 is stopped and the positioning jig 10 is lowered from the upper limit to the lower limit, the alignment conveyor 9 is operated (step progress) to transfer the O-ring 1 to a predetermined position, and then the conveyor 3 is operated again. . At this time, the positioning jig 10 simultaneously rises from the lower limit to the upper limit. Note that these operations can be controlled by the sensor 11 instead of the sensor 16, or can be controlled in common.

A control motor suitable for positioning such as a pulse motor or a servo motor is used as a drive source of the alignment conveyor 9, and the O-ring 1 is regularly controlled at a constant pitch by a sensor 11 and / or a sensor 16 via a control device. Can be transported intermittently. 17 is a guide for guiding the O-ring 1 to fall. The transport control may be, other than the control by the motor, time-up control in which the motor is controlled by a timer, or on-off control in which the motor is controlled by turning on and off the sensor. Further, by installing a camera above the conveyance stop pitch of the belt 13, automatic inspection of the O-ring 1 sequentially conveyed at an equal pitch becomes possible. In addition, the alignment conveyor 9 is merely one means of conveyance, and other conveyance means, for example, an index table, a chute, or the like may be employed.

[0013]

【Example】

 The O-ring automatic transfer device of the present invention will be further described based on an embodiment according to the specific embodiment shown in FIG. The O-ring used for the automatic conveyance is an O-ring obtained by molding LIMS silicone rubber (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.) and has a rubber hardness of 30 °, an outer diameter of 42 mm, an inner diameter of 38 mm, and a wire diameter of 2 mm. It has shape and dimensions. When 500 O-rings are supplied into the hopper and taken out using the belt conveyor, they are separated individually and taken out from the hopper. Was completed. At this time, the positional accuracy of the O-ring was ± 1.5 mm, and the average supply time was 1.0 second. On the other hand, as a comparative example, when the same number of O-rings as in the example were supplied by manually aligning 500 pieces on a conveyor, the O-ring position accuracy was ± 2.5 mm, and the average supply time was 1.5 seconds. Met.

[0014]

[Effect of the invention]

 With the O-ring automatic transfer device of the present invention, the O-ring was accurately positioned on the conveyor from the hopper, and could be dispensed and supplied at an equal pitch. For this reason, the conveyance of O-rings to O-ring mounting devices, inspection devices, cleaning devices, etc. has been automated, enabling unmanned long-time operation.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing an example of an O-ring automatic transfer device of the present invention.

FIG. 2 is an enlarged schematic cross-sectional view showing a part of a separation claw and a belt conveyor, which are components of the O-ring automatic transfer device of the present invention.

3A and 3B show a return portion and an alignment conveyor of the belt conveyor, wherein FIG. 3A is a plan view, FIG. 3B is a side view of the return portion,
(C) is sectional drawing which follows the center line of (a).

FIGS. 4A, 4B, and 4C are front views showing a positioning jig that moves up and down through an opening provided in a belt of an alignment conveyor in the order of operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... O-ring 2 ... Hopper 3 ... Belt conveyor 4 ... Return part 5 ... Belt 6 ... Pin 7 ... Fall prevention guide 8 ... Separation claw 9 ... Alignment conveyor 10 ... Positioning jig 11 ... Sensor 13 ... Belt 14 ... Opening 15… Air cylinder 16… Sensor 17… Guide

Claims (2)

[Utility model registration claims] 1. A device for individually taking out, positioning and transporting rubber O-rings from a hopper and transporting the belts, the belt conveyor having a belt on which the pins are planted at equal pitches along the moving direction. Arranged along the bottom surface, provided above the upper part of the belt conveyor with separating claws to remove extra O-rings from above the belt in the hopper, and provided O-ring drop prevention guides on both sides of the return part at the upper end of the belt conveyor. A rubber O-ring automatic conveyor, wherein a rubber O-ring alignment conveyor is provided below the end of the fall prevention guide. 2. The alignment conveyor according to claim 1, wherein the conical head moves up and down through an opening provided in the belt.
The rubber O-ring automatic transfer device according to claim 1, further comprising a ring positioning jig.