JP2010001124A - Supply device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a supply device stably supplying workpieces. <P>SOLUTION: The supply device 10 has a hopper 11, and an oscillation feeder 13 disposed at a lower side of the hopper. A chute 12 is disposed between a discharge port 11a of the hopper and the bottom surface 14a of a trough so that the chute 12 is not in contact with the trough. The chute has an inclination part 12a blocking a vertical projection area S of the discharge port of the hopper, and an end part 12b of the chute is set close to the bottom surface of the trough and extended to the outside of the projection area. This configuration suppresses compression of the workpiece near the discharge port of the hopper and prevents occurrence of clogging, to stably supply the workpieces. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to a workpiece supply device in various devices that mainly handle minute workpieces such as powder and chip parts.

In various devices that handle minute workpieces such as powder particles and chip parts, as a supply device for supplying the workpiece, a hopper for storing the workpiece, and a vibration feeder disposed under the hopper What you have is widely used.

As an example of the above-described apparatus, as shown in FIGS. 4 and 5, Patent Document 1 discloses a particle size distribution measurement including a hopper 111 and a vibration feeder 113 and a supply means for supplying a workpiece (powder sample) P. An apparatus 110 has been proposed. The shooter 104 that guides the powder sample P that freely falls from the tip of the vibration feeder 113 has an optical axis in a direction substantially perpendicular to the guide surface of the shooter 104, and the intersection of the optical axis and the guide surface. A CCD camera 105 having a focal depth set in the vicinity thereof and an illuminating means 106 for irradiating light to the imaging range are provided. The particle size distribution measuring device 110 configured as described above measures the particle size distribution of the workpiece P that slides down along the shooter 104.

The hopper 111 puts the work P from the upper wide receiving port and discharges the work P from the lower lower discharging port 111a. The vibration feeder 113 includes a trough 114 disposed immediately below the discharge port 111a of the hopper 111, and a vibration exciter 115 that imparts a linear vibration to the workpiece P on the trough 114.

The discharge port 111a of the hopper 111 is arranged at a predetermined distance from the bottom surface 114a of the trough 114 of the vibration feeder 113, and the workpiece P passes through the gap between the edge of the discharge port 111a of the hopper 111 and the bottom surface 114a of the trough 114. Then, it spreads on the bottom surface 114 a of the trough 114. For this reason, the quantity of the workpiece | work P supplied on the trough 114 of the vibration feeder 113 is substantially determined by the said space | interval dimension.

As another example of the above device, as shown in FIG. 6, Patent Document 2 includes a hopper 211 and a vibration feeder 215, which includes a transport unit 213 that transports a weighing object P, and includes chip parts and powder particles. For example, there has been proposed a weighing device 210 that is mainly used for taking out a minute weighing object P by quantitative measurement.
JP 2001-165845 A JP 2004-325114 A

In the conventional supply device, for example, as shown in FIG. 5, the bottom surface 114 a of the trough 114 of the vibration feeder 113 facing the discharge port 111 a of the hopper 111 with a predetermined interval is slanted in the traveling direction by the shaker 115. An upward vibration is applied. On the other hand, in the hopper 111 in which the minute work P is stored, the load of the work P is concentrated toward the lower discharge port 111a. For this reason, in the vicinity of the discharge port 111a, there is a problem in that a compressive force acts on the workpiece P, the blockage occurs, and supply is likely to be delayed. In addition, since the degree of compression of the workpiece P varies in the vicinity of the discharge port, the stress applied to the bottom surface 114a of the trough 114 of the vibration feeder 113 varies due to the load of the workpiece. For this reason, the vibration state of the trough 114 fluctuates unnecessarily, and there is a problem that it is difficult to stably supply the workpiece P. Further, since the volume of the space sandwiched between the edge of the discharge port 111a of the hopper 111 and the bottom surface 114a of the trough 114 is constantly fluctuated by the vibration, when the work P passes through this space, There was a problem that deformation and damage were likely to occur.

The present inventors have found that the occurrence of the above-described problems can be suppressed by separating the work load concentrated in the vicinity of the discharge port in the hopper and the compressive stress applied by the vibrator of the vibration feeder, and the present invention. It came to.

The present invention can stably supply a work by suppressing occurrence of work blockage in the vicinity of the discharge port of the hopper, occurrence of fluctuation of the work supply amount by the vibration feeder, and deformation or damage of the work. The object is to provide a possible supply device.

In order to achieve the above object, the present invention includes (1) a hopper for storing a workpiece, and a vibration feeder disposed on the lower side of the hopper, the hopper having a discharge port below, In the supply device comprising the trough that is disposed directly below the discharge port of the hopper and receives a workpiece discharged from the hopper, and a vibration exciter that imparts straight vibration to the trough.
A chute is disposed in a non-contact manner on the trough between the outlet of the hopper and the bottom surface of the trough,
The chute has an inclined portion that blocks a vertical projection area of the discharge port,
The tip of the chute is close to the bottom surface of the trough and extends out of the vertical projection area. (... hereinafter referred to as first problem solving means)

In addition to the first problem solving means, one of the main forms of the supply device is (2) so that the discharge port of the hopper keeps a constant interval along the inclined portion of the chute. It has a formed edge. (... hereinafter referred to as second problem solving means)

Further, according to another aspect of the supply device, in addition to the second problem solving means, (3) the chute has side walls on both sides of the inclined portion. (... hereinafter referred to as third problem solving means)

The operation of the first problem solving means is as follows. That is, a chute is disposed in a non-contact manner on the trough between the discharge port of the hopper and the bottom surface of the trough,
The chute has an inclined portion that blocks a vertical projection area of the discharge port,
The tip of the chute is close to the bottom surface of the trough and extends out of the vertical projection area. For this reason, the load of the work accommodated in the hopper is guided along the inclined portion of the chute in the vicinity of the discharge port, and the trough of the trough is extended at the tip of the chute extended outside the vertical projection region of the discharge port of the hopper. Transferred on the bottom. Thereby, it can prevent that the load of the workpiece | work accommodated in the hopper and the compressive stress resulting from the said vibration in the bottom face of the said trough collide.

The operation of the second problem solving means is as follows. That is, the discharge port of the hopper has an edge portion formed so as to maintain a constant interval along the inclined portion of the chute. For this reason, it is possible to adjust the workpiece supply amount to a desired value while suppressing the occurrence of blockage of the workpiece in the vicinity of the discharge port.

The operation of the third problem solving means is as follows. That is, the chute has side walls on both sides of the inclined portion. For this reason, it is possible to prevent the workpiece from entering between the bottom surface of the trough and the chute. Thereby, deformation | transformation of a workpiece | work and generation | occurrence | production of damage can be suppressed.

According to the supply device of the present invention, it is possible to prevent the occurrence of blockage by suppressing the compression of the workpiece in the vicinity of the discharge port of the hopper. Further, it is possible to stably supply the workpiece by preventing the load of the workpiece in the hopper from being loaded on the trough and changing the vibration state of the trough unnecessarily. Moreover, it can suppress that compressive stress is given to the workpiece | work transferred on the bottom face of a trough, and can suppress the deformation | transformation of a workpiece | work and generation | occurrence | production of damage. The above object and other objects, structural features, and operational effects of the present invention will become apparent from the following description and the accompanying drawings.

Hereinafter, a first embodiment of the supply device of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is a diagram showing a schematic configuration of a supply device 10 according to a first embodiment of the present invention. FIG. 2 is an enlarged cross-sectional view of a main part of the supply device 10 of the present embodiment.

As shown in FIGS. 1 and 2, the supply device 10 of the present embodiment includes a hopper 11 for storing the workpiece P, and a vibration feeder 13 disposed below the hopper 11. The hopper 11 is provided with a discharge port 11a for the work P on the lower side. The vibration feeder 13 includes a trough 14 that is disposed directly below the discharge port 11 a of the hopper 11 and receives the workpiece P discharged from the hopper 11, and a vibration exciter 15 that imparts linear vibration to the trough 14. The hopper 11 is supported at a predetermined height via an arm 16c on a support 16b planted on the base 16a of the frame 16. The vibration feeder 13 is installed on the base 16a of the frame 16 through vibration isolation means made of an elastic body such as rubber or a spring. A chute 12 is disposed between the discharge port 11 a of the hopper 11 and the bottom surface 14 a of the trough 14. Similar to the hopper 11, the chute 12 is supported on the trough 14 in a non-contact manner on the support 16 b of the frame 16 via the arm 16 d. The chute 12 has an inclined portion 12 a that blocks the vertical projection region S of the discharge port 11 a of the hopper 11, the tip portion 12 b of the chute 12 is close to the bottom surface 14 a of the trough 14, and is outside the vertical projection region S. It is extended to. In addition, in the supply apparatus 10 of this embodiment, the chute | shoot 12 is attached to the front-end | tip of the said arm 16d so that angle adjustment is possible. In the supply device 10 of the present embodiment, the hopper 11 and the chute 12 are supported by different arms 16c and 16d, respectively, with respect to the column 16b of the frame 16, and the arms 16c and 16d By adjusting the fixed interval, the interval between the discharge port 11a of the hopper 11 and the inclined portion 12a of the chute 12 can be adjusted to an arbitrary dimension.

In the supply device 10 of this embodiment, the load of the workpiece P accommodated in the hopper 11 is guided along the inclined portion 12a of the chute 12 in the vicinity of the discharge port 11a of the hopper 11, and the discharge port of the hopper 11 11a is transferred onto the bottom surface 14a of the trough 14 by the tip 12b of the chute 12 extending out of the vertical projection area S of 11a. Thereby, it can prevent that the load of the workpiece | work P accommodated in the hopper 11 and the compressive stress resulting from the said vibration in the bottom face 14a of the said trough 14 collide.

Further, in the supply device 10 of the present embodiment, in addition to the above-described configuration, the discharge port 11a of the hopper 11 is formed with an edge formed so as to maintain a constant interval along the inclined portion 12a of the chute 12. Have For this reason, it is possible to adjust the supply amount of the workpiece P to a desired value while suppressing the occurrence of blockage of the workpiece P in the vicinity of the discharge port 11a.

A preferred embodiment of the hopper 11 is as follows. That is, it is preferable that the hopper 11 has a wide receiving portion for storing the workpiece P and has a narrow discharge port 11a for discharging the workpiece P below the receiving portion. Moreover, it is preferable to form the said discharge port 11a at the front-end | tip of a tubular cylinder port, for example, and it is more preferable to have the edge part formed so that a fixed space | interval might be maintained along the inclination part 12a of the said chute | shoot 12. FIG.

A preferred embodiment of the vibration feeder 13 is as follows. That is, it is preferable that the vibration feeder 13 includes a trough 14 and a vibration exciter 15 that is disposed below the trough 14 and applies a straight vibration to the trough 14. The vibration exciter 15 can be selected according to the purpose, such as an electromagnetic type, a piezoelectric type, or the like. It is preferable that the trough 14 is disposed substantially horizontally with a distance just below the discharge port 11a of the hopper 11. Further, the bottom surface 14a of the trough 14 is preferably formed by appropriately selecting the surface roughness and the surface shape in order to give a desired driving force to the workpiece P. Further, in order to enhance the durability, various coatings may be applied to the bottom surface 14a of the trough 14 as necessary.

A preferred embodiment of the chute 12 is as follows. In other words, the chute 12 is preferably disposed in a non-contact manner with the trough 14 between the discharge port 11 a of the hopper 11 and the bottom surface 14 a of the trough 14. The chute 12 preferably has an inclined portion 12a that blocks the vertical projection region S of the discharge port 11a of the hopper 11.
Further, it is preferable that the tip 12b of the chute 12 is close to the bottom surface 14a of the trough 14 and extends outside the vertical projection region S. The inclination angle of the inclined portion 12a is preferably set to an optimum angle in consideration of the fluidity of the workpiece P. Moreover, it is preferable to set the space | interval of the discharge port 11a of the said hopper 11 and the inclination part 12a of the said chute | shoot 12 to the optimal dimension in order to obtain a desired workpiece | work supply amount. In the present embodiment, the hopper 11 and the chute 12 are supported via different arms 16c and 16d so that the gap size can be adjusted. However, the present invention is not limited to this, and for example, the hopper The chute 12 may be supported by a cylinder port having 11 discharge ports 11a via an arm (not shown) so that the height can be adjusted.

Next, a second embodiment of the supply device of the present invention will be described with reference to FIG. FIG. 3 is an enlarged cross-sectional view showing a main part of the supply device 20 of the present embodiment.

As shown in FIG. 3, the supply device 20 of the present embodiment, like the supply device 10 of the previous embodiment, has a hopper 21 for storing the workpiece P, and a vibration disposed below the hopper 21. And a feeder 23. The hopper 21 is provided with a discharge port 21a for the work P on the lower side. The vibration feeder 23 includes a trough 24 that is disposed directly below the discharge port 21 a of the hopper 21 and receives the workpiece P discharged from the hopper 21, and a vibration exciter 25 that imparts straight vibration to the trough 24. The hopper 21 is supported at a predetermined height via an arm on a pillar that is planted on the base of a frame (not shown). The vibration feeder 23 is installed on the base of the frame (not shown) via vibration isolation means made of an elastic body such as rubber or a spring. A chute 22 is disposed between the discharge port 21 a of the hopper 21 and the bottom surface 24 a of the trough 24. The chute 22 is attached to a cylinder port having a discharge port 21a of the hopper 21 through an arm (not shown) so that the height can be adjusted, and is supported by the trough 24 in a non-contact manner. The chute 22 has an inclined portion 22a that blocks the vertical projection region S of the discharge port 21a of the hopper 21. The lower end portion 22b of the chute 22 is close to the bottom surface 24a of the trough 24 and is outside the vertical projection region S. It is extended to. In the supply device 20 of the present embodiment, the chute 22 has side walls 22c erected on both sides of the inclined portion 22a and on the rear end side of the inclined portion 22a. For this reason, it is possible to prevent the work P discharged from the discharge port 21a of the hopper 21 from entering between the chute 22 and the bottom surface 24a of the trough 24, thereby preventing deformation and damage of the work P. Can do. Other configurations and operational effects are the same as in the first embodiment, and a description thereof will be omitted.

According to the present invention, it is suitable as a workpiece supply device in various devices that mainly handle minute workpieces such as a granular material that is likely to be compressed by pressurization or vibration, or a chip component that is likely to be deformed or damaged.

It is a figure which shows the schematic structure of 1st Embodiment of the supply apparatus of this invention. It is a principal part expanded sectional view of the said embodiment. It is a principal part expanded sectional view which shows 2nd Embodiment of the supply apparatus of this invention. It is explanatory drawing which shows an example of background art. It is a principal part expanded sectional view which shows the supply part of the said background art. It is explanatory drawing which shows the other example of background art.

Explanation of symbols

10, 20: Supply device 11, 21: Hopper 11a, 21a: Discharge port 12, 22: Chute 12a, 22a: Inclined portion 12b, 22b: Tip portion 22c: Side wall 13, 23: Vibration feeder 14, 24: Trough 14a, 24a: bottom surface 15, 25: shaker 16: frame 16a: base 16b: support 16c: arm 16d: arm P: work S: vertical projection area

Claims (3)

A hopper for storing a workpiece; and a vibration feeder disposed below the hopper, wherein the hopper includes a discharge port below, and the vibration feeder is disposed directly below the discharge port of the hopper. In a supply device comprising a trough that receives a work discharged from the hopper and a vibration exciter that imparts straight vibration to the trough,
A chute is disposed in a non-contact manner on the trough between the outlet of the hopper and the bottom surface of the trough,
The chute has an inclined portion that blocks a vertical projection area of the discharge port,
The supply device, wherein a tip portion of the chute is close to a bottom surface of the trough and extends out of the vertical projection region.   The supply device according to claim 1, wherein the discharge port of the hopper has an edge portion formed so as to maintain a constant interval along the inclined portion of the chute. The supply device according to claim 2, wherein the chute has side walls on both sides of the inclined portion.

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