JP2543859Y2 - Hopper structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a hopper for supplying chip components on a printed circuit board.

[0002]

2. Description of the Related Art FIG. 4 is a partial cross-sectional front view showing an example of the structure of a conventional hopper. In this figure, reference numeral 1 denotes a chip component to be supplied on a printed circuit board (not shown), and 2 The stirrer 3 stirs the chip components 1 to release the entanglement, and aligns the plurality of chip components 1,
Alignment unit for supplying the one by one on a printed circuit board, 4 is the mounting with stirring unit 2 is attached via an alignment unit 3, 5 is a rotary drive lever 5a ₁ is formed on part of the outer periphery 5
a rotary drive device 5a,
A support shaft 4b, which is bent from one end of the mount 4 and extends upward, is rotatably mounted on a drive shaft 4b mounted parallel to the floor.

Further, the stirring unit 2 is rotatably mounted on a chip component storage unit 2a into which the chip components 1 are put and stored, and on a rotating shaft 2b mounted parallel to the floor surface. The swing roll 6 has a part thereof exposed in the component storage part 2a. The lower opening of the chip component storage section 2a communicates with the upper opening of an alignment cylindrical hole 3a formed vertically in the alignment section. On the other hand, the swing roll 6 is partially cut out and has a lever 5a ₁ of a rotary drive device 5a of the drive unit 5.
The driven lever 6a is formed in contact with the driven roller 6a, and an arc-shaped stirring projection 6b is formed on the outer periphery of the swing roll 6 at a position substantially symmetrical to the driven lever 6a. The upper end surface of the stirring projection 6b is aligned with the cylindrical alignment hole 3.
5A is arranged at the upper opening of FIG.
As shown in FIG. 7, a groove 6c is formed in which only one chip component 1 put into and stored in the chip component storage portion 2a passes. Further, the swing roll 6 is provided with an arc-shaped hole 6d along the outer peripheral surface thereof, and a rod-shaped stopper pin 7 fixed to the stirring unit 2 in the arc-shaped hole 6d.
Is loosely inserted, and a return spring 8 is provided between the stopper pin 7 and one end of the arc-shaped hole 6d.

[0004] The aligning portion 3 is formed with a drop port 3b that communicates with the aligning cylindrical hole 3a by shifting the vertical axis. Further, a slide hole 3c is formed in a direction between the drop opening 3b and the alignment cylindrical hole 3a, which is orthogonal to these, and a through hole 3e that is slid by the spring 3d and slides left and right in the drawing. Is loosely inserted.

In such a configuration, the chip component 1 is put into the chip component storage section 2a of the stirring section 2, and the rotation driving device 5a of the driving section 5 is rotated counterclockwise about the driving shaft 4b. Then, the lever 5a ₁ formed on the outer periphery of the swing roll 6 comes into contact with the driven lever 6a formed on the swing roll 6, and the driven lever 6a is pushed down. Until one end of the hole 6d hits the stopper pin 7,
It rotates clockwise about the rotation axis 2b.

[0006] By the rotation of the swing roll 6, the agitating projection 6b formed on the outer periphery thereof also rotates clockwise, and the upper end surface of the agitating projection 6b causes the agitating projection 6b to be accommodated in the chip component accommodating section 2a. The entangled chip component 1 is lifted, and the entanglement is released. Then, the entanglement is released, and the vertically oriented chip component 1 passes through the groove 6c of the agitating projection 6b and sequentially enters the alignment cylindrical hole 3a of the alignment portion 3 communicating with the groove 6c. , Fall, and are vertically aligned and stacked in the alignment cylindrical hole 3a.

On the other hand, the swing roll 6 is configured so that only the rotation of the agitating projection 6b within an angle smaller than the arc angle θ is generated by the stopper pin 7 and the arc-shaped hole 6d. after being rotated by an angle θ by 5a _1, outside the engagement of the lever 5a ₁ and the driven lever 6a, by an elastic restoring force of the return spring 8 which is contracted pressed by a series of operations described above, in the counterclockwise direction It rotates and returns to a predetermined position.

Next, after one of the lowermost layers of the chip components 1 aligned and stacked in the alignment cylindrical hole 3a is housed in the through hole 3e of the shutter 3f, the shutter 3f is not shown. The inside of the slide hole 3c is slid rightward in the drawing by the drive unit, so that the slide hole 3c is dropped and supplied to the outside from the drop hole 3b communicating with the through hole 3e. The shutter 3f slid to the right in the drawing slides in the slide hole 3c leftward in the drawing by the elastic restoring force of the spring 3d compressed by a driving unit (not shown), and moves to a predetermined position. Return.

[0009]

By the way, in the above-mentioned conventional hopper structure, all of the chip components 1 which are put into and stored in the chip component storage portion 2a of the stirring portion 2 and are entangled with each other are transferred to the swing roll 6 Since only the stirring protruding portion 6b formed on the chip component 1 is forcibly pushed up, the force for canceling the entanglement with the force for supporting the weight of the entire chip component 1 is not less than The swing roll 6 must be rotated. Therefore, when this force is applied to the chip component 1, the lower chip component 1 in the chip component storage 2a may be damaged.

[0010] The broken pieces of the damaged chip parts are
This causes various inconveniences as described below. In the alignment cylindrical hole 3a, a broken piece enters between the chip components 1, and the chip components 1 are not correctly aligned. If the broken pieces are stacked below the through-hole 3e, the chip components 1 in the alignment cylindrical hole 3a are not accommodated in the through-hole 3e, so that the chip components 1 cannot be separated one by one. If the broken piece is caught between the inner wall of the falling port 3b and the chip component 1, the chip component 1 does not fall. Therefore, it is necessary to appropriately remove broken pieces that cause the above-described inconvenience.

In recent years, chip components 1 have tended to be reduced in size and weight. However, in the above-described conventional hopper structure, the chip components 1 are aligned by their own weight, Since the chip components 1 are merely dropped on the opening 3b, the chip components 1 entangled by static electricity generated from the chip components 1 themselves cannot be released only by their light weights. In addition, the alignment cylindrical hole 3 is formed by the above-mentioned broken pieces, dust, or dust in the air.
If the hole a or the drop opening 3b is clogged or the hole becomes small, the weight of the small and lightweight chip component 1 alone cannot be properly aligned in the alignment cylindrical hole 3a or cannot be dropped outside.

Furthermore, in the structure of the conventional hopper described above, since the driving swing roll 6 of a number of agitating portion 2 by one of the levers 5a ₁ formed in the rotary drive unit 5a, for a long time use If to that, there are cases where the lever 5a ₁ is bent by the load of the return spring 8. In this case, the variation of the rotation angle of the stirring projections 6b occurs, since this is not correctly aligned chip components 1 due must be replaced lever 5a _1.

The present invention has been made under such a background, and can improve the reliability of alignment, separation, and dropping of chip components, and can cope with reduction in size and weight of chip components. In addition, it is an object of the present invention to provide a hopper structure that can extend the life of the driving unit.

[0014]

According to a first aspect of the present invention, there is provided a hopper having a stirrer configured to stir a tangled chip component inserted into and housed in a cavity formed therein to release the entanglement. A driving unit that drives the stirring unit, a hole communicating with the cavity of the stirring unit is formed, and the chip components put into the hole from the cavity are aligned.
In the structure of the hopper comprising an alignment unit which is separately separated and supplied to the outside, the driving unit has a driving gear formed with teeth of a predetermined pitch on an outer periphery thereof and rotating about a driving shaft, The stirrer has teeth formed on its outer periphery to mesh with the teeth of the drive gear, and the shape of the cavity in a cross section perpendicular to the rotation axis is polygonal, and a stirrer for agitating each side of the polygon. Has a drum inclined in one direction of the rotation axis direction, and communicates with an upper end portion of the hole of the alignment portion.
Blown compressed air through the passage
Characterized in that it is provided with a tip part stirring assisting means for rolling . Further, the structure of the hopper according to claim 2 is
2. The invention as claimed in claim 1, wherein the alignment portion is located between the holes.
Compressed air is blown in through a passage communicating with the
That it has transport assisting means to assist the transport of
Features.

[0015]

According to the structure of the hopper according to the first aspect, when the drum is rotated by the rotation of the drive gear of the drive unit after a plurality of chip components are put into the internal cavity of the drum, the stirring is performed. The tip components on the slope are agitated to release the entanglement. The tangled chip component is
It is rolled by the compressed air blown out from the passage communicating with the upper end of the hole of the alignment section, and when it is oriented in a predetermined direction , slides down sequentially into the hole inside the alignment section. The chip components slid into the alignment portion are subjected to alignment, separation, and drop processes. Then, the chip components that have completed the final dropping process are supplied one by one to the outside. Claim 2
According to the structure of the hopper described above, in the steps of aligning, separating, and dropping performed on the chip components that have slipped into the alignment section, the compressed air blown out from the chip component transport assisting means transports the chips between the processes. Is assisted.

[0016]

An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a front sectional view showing a schematic configuration of a structure of a hopper according to an embodiment of the present invention. In this figure, parts corresponding to the respective parts in FIG.

In FIG. 1, reference numeral 9 designates a drive unit comprising a drive gear 9a having teeth of a predetermined pitch formed on the outer periphery. The drive gear 9a is provided at the upper end of the support 4a of the mounting base 4 with respect to the floor surface. It is rotatably mounted on a drive shaft 4b which is mounted in parallel. Reference numeral 10 denotes a hopper body into which chip components are inserted and stored, and which sequentially supplies the chip components 1 in a predetermined direction onto a printed circuit board (not shown).

Further, in the hopper main body 10, a stirring section 11 for stirring the chip components 1 to release entanglement with each other is provided.
And an aligning unit 12 for aligning and separating the chip components 1 individually and supplying them onto a printed circuit board, and compressed air for blowing compressed air into the stirring unit 11 and the aligning unit 12 to agitate and convey the chip components 1. Block 13 is formed.

In the stirring section 11 of the hopper main body 10 described above, a part of the arc portion 11 a is a driving gear 9 of the driving section 9.
a cylindrical drum provided to be exposed to the outside from the hopper body 10 so as to be in contact with the outer periphery of the drive gear 9a. The outer peripheral surface of the drum 11a has teeth meshing with the teeth formed on the outer periphery of the drive gear 9a. Stirrer 1 parallel to the floor
1, and is rotatably mounted on a rotation shaft 11b mounted on the rotation shaft 11b. Shape of the inner cavity 11a ₁ of the cross-section perpendicular to the rotation axis 11b of the drum 11a is regular octagon, stirring slopes 11a ₂ that constitute each side of the regular octagonal, like shown on the left side sectional view of FIG. 2 In FIG. 1, it is formed to be inclined at a predetermined depression angle toward the front surface.

Meanwhile, the alignment portion 12 of the hopper body 10, 12a is a curved aligning cylindrical groove communicating with the lower portion of the inner cavity 11a ₁ of the upper opening drum 11a, one 3 As shown in an enlarged perspective view of a portion, a part of the upper opening has a stirring slope 11 formed on a drum 11a.
They are formed at positions in contact higher than the front of the a _2. Further, in the aligning portion 12, 12b is a linear drop opening whose upper opening communicates with the lower opening of the aligning cylindrical groove 12a by shifting the vertical axis, and the aligning cylindrical hole 12a, the drop opening 12b, In the direction perpendicular to the drop port 12b between
A slide hole 12c is formed, and a spring 12d is formed.
The shutter 12f provided with the through-hole 12e which is assisted by and slides in the left-right direction in the figure is loosely inserted.

Further, in the compressed air block 13 of the hopper body 10, a passage 13a which is a passage of compressed air for rolling or transporting the chip component 1 is formed.
The opening of each part of the passage 13 a
a, and an alignment cylindrical groove 12 through which the compressed air in the passage 13a communicates with the suction port 13b for constantly sucking the compressed air.
A blow-out port 13c is formed at the upper end of a to blow the chip component 1 so as to roll the chip component 1 so as to be oriented correctly. Also,
A compressed air in the passage 13a is blown out to an intermediate portion of the communicating cylindrical groove 12a communicating therewith, and an outlet 13d for assisting the drop of the chip component 1 and a dropper communicating through the through hole 12e. An outlet 13e is formed to blow compressed air to 12b to assist the chip component 1 to fall outside.

In such a configuration, when the chip component 1 is put into the drum 11a of the agitating section 11, and the driving gear 9a of the driving section 9 is rotated clockwise about the driving shaft 4b, the driving gear 9a comes into contact therewith. The rotating drum 11a is rotated counterclockwise about the rotating shaft 11b. By the rotation of the drum 11a, the tangled chip components 1 housed on the stirring slope 11a2 are stirred, and the tangling of the chip components 1 is released.

[0023] Thus, the chip component 1 is released in the entanglement, the inclination in the front in Figure 1 of the stirring slopes 11a _2, arranged individually in the front in the figure, as shown in FIG. 3, the drum 11a Of the alignment cylindrical hole 1 of the alignment section 12
Some stirring slopes 11a ₂ became higher position than that upper opening of 2a, sequentially upper opening of the alignment cylinder groove 12a, and fall, and communicates with the upper portion of the alignment cylinder groove 12a rolling by the compressed air that is blown out from there the air outlet 13c
When it is moved to the correct orientation, it slides down in the alignment cylindrical groove 12a formed in a curved shape.

The chip component 1 that has slid down is assisted by compressed air blown from an outlet 13d that is downwardly communicated with the middle portion of the alignment cylindrical groove 12a on the way, and the chip component 1 is aligned with the alignment cylindrical hole 12a. Stacked in from below. One of the lowermost layers of the stacked chip components 1 is securely housed in the through-hole 12e formed in the shutter 12f with the aid of its own weight and the aid of compressed air.

Next, when the shutter 12f driven by a drive unit (not shown) slides in the slide hole 12c rightward in the drawing, the through hole 12e and the drop port 12b communicate with each other. At this time, the chip component 1 drops from the drop port 12b to an external printed circuit board by its own weight and the assist of the compressed air blown out from the blow port 13e communicating with the drop port 12b through the through hole 12e. Is done. After the chip component 1 is dropped and supplied, the shutter 12f slides in the slide hole 12c to the left in the drawing and returns to a predetermined position by the elastic restoring force of the compressed spring 12d.

As described above, according to the above-described embodiment, the entanglement of the component 1 can be released and the component 1 can be reliably dropped to the outside. In the embodiment described above, the shape of the internal cavity 11a ₁ in a cross section perpendicular to the rotation axis 11b is, the example of using a drum 11a serving as a regular octagonal, a drum having other cross-sectional shapes Needless to say, it can be realized even if used.

[0027]

[Effect of the Invention] As described above, the invention according to claim 1 is described.
According to draft, and stirred using a drum, by the method comprising the chip components in a predetermined direction by using the compressed air, to reduce the load applied to the chip component, is possible to lower the probability that the chip parts may be damaged it can. In addition, since the power transmission means is a gear mechanism, the load is distributed over the entire outer periphery of the drive gear of the drive unit, and the force generated by the drive gear for stirring the chip components using the drum is the minimum necessary. Therefore, there is an effect that the driving unit is hardly damaged. According to the invention of claim 2, the compressed air
Alignment, separation,
Reliable fall, regardless of the weight or size of the chip component
Can be done.

[Brief description of the drawings]

FIG. 1 is a front sectional view showing a schematic configuration of a hopper according to an embodiment of the present invention.

FIG. 2 is a left side sectional view showing an example of the structure of a drum 11a used in the structure of the hopper according to one embodiment of the present invention.

FIG. 3 is a partially enlarged perspective view showing the configuration of a part (A) of the structure of the hopper according to one embodiment of the present invention.

FIG. 4 is a partial cross-sectional front view showing a schematic configuration of an example of the structure of a conventional hopper.

FIG. 5 is a schematic structural view showing a shape of a stirring protrusion 6b of a swing roll 6. FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Chip part, 2,11 ... Stirring part, 3,14 ... Alignment part, 5, 9 ... Drive part, 11a ... Drum, 13 ... Compressed air block (tip part stirring and conveyance assistance means)

Claims (2)

(57) [Scope of request for utility model registration] An agitator for agitating chip components entangled with each other, which are inserted into and housed in a cavity formed therein, to release the entanglement; a drive unit for driving the agitator; and the agitator A hole communicating with the cavity is formed,
A hopper structure comprising: an alignment unit that aligns the chip components put into the holes from the cavity, individually separates and supplies the chips to the outside, wherein the driving unit has a predetermined pitch teeth on its outer periphery. Is formed,
A drive gear that rotates about a drive shaft, wherein the agitator has teeth formed on its outer periphery that mesh with teeth of the drive gear, and the shape of the cavity in a cross section orthogonal to the rotation axis is polygonal. A stirrer constituting each side of the polygon has a drum inclined at one side in the rotation axis direction, and a pressure is applied through a passage communicating with an upper end of the hole of the alignment section.
A chip that blows compressed air to roll the chip component
A hopper structure comprising a component stirring assisting means . 2. An intermediate part of the hole of the alignment part communicates with the part.
Compressed air is blown through the passage to carry the chip components.
A contractor having a transport assisting means for assisting transport.
The structure of the hopper according to claim 1.