JPH0245215Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a parts sorting device for a parts feeder using a fixed ring and a rotating ring.

[Prior Art] Conventionally, in a parts feeder parts sorting device that uses a fixed ring and a rotating ring, the rotating ring side has a part supplying function and a parts sorting function. Specific examples of this are shown in FIGS. 2 to 8. FIG. 2 is a front view of a parts feeder equipped with the parts sorting device of this specific example, FIG. 3 is a front view and side view of parts supplied and sorted by the parts feeder, and FIG. 4 is a top view of the parts feeder. FIGS. 5 to 8 are cross-sectional views showing the structure and function of the parts sorting device. In Figure 2, 1 is a ball, 3 is a ring with a fixed ring and a rotating ring, 4 is a chute, 7 is a vibration exciter, 8 is a vibration isolator, 9 is a chute support metal fitting,
10 is a base. The vibration exciter 7 is fixed to a base 10 via a vibration isolating rubber 8. The ball 1 is fixed on a vibrator 7, and the ball 1 and the vibrator 7 constitute a parts feeder. The chute 4 is fixed at a predetermined location on the ring, and passes through a predetermined location on the base 10 to be connected to the next process. The functions of this device will be outlined based on the above configuration. A spiral track is formed inside the ball 1, and parts inserted into the bottom of the ball 1 by some means are moved along the track by the torsional vibration given to the ball 1 by the vibrator 7. and is transferred to the ring 3 by a predetermined transfer means. Furthermore, the above parts can be processed by the supply and sorting function of ring 3.
Corrected to a desired posture and supplied to the chute 4,
The chute 4 transports it to the next process.

The supply and sorting functions of the ring 3 will be described in detail below. This parts feeder targets the parts shown in FIG. Figure a is a front view of the part,
Figure b shows a side view of the part. As shown in the figure, the part is cylindrical and has a concave notch at one end. Figure 4 is a top view of this parts feeder, in which 1 is a bowl, 2 is a truck,
a is a guide for transferring parts from the bowl to the ring 3; 3a is a fixed ring fixed to the outer peripheral surface of the bowl 1; 3b is a rotating ring;
A ring 3 is composed of a rotating ring 3b. Further, as shown in FIG. 4, the rotating ring 3b has a U-shaped recess that matches the shape of the component. 3c is a ring support for supporting the rotating ring 3b, and 3d is a ring support for fixing the ring support 3c to the outer peripheral surface of the bowl 1, which are provided at several locations as shown in the figure. 3e and 3f are the first elongated hole and the second elongated hole for removing parts that do not conform to the posture, and 3g is the ball that receives the parts removed from the ring 3 through the first elongated hole 3e and the second elongated hole 3f. This is the receiving box that returns it to 1. 4 is a chute, 5 is a guide 2 for removing parts whose posture does not match before the first elongated hole 3e and the second elongated hole 3f, and for guiding the parts from the track 2 in the ball 1 to the ring 3.
This wiper is used to assist in transferring the ball 1 smoothly through the wiper.The outer peripheral surface of the ball 1 on the front surface of the wiper is notched as shown in the figure. 5a is a wiper mounting bracket for fixing the wiper 5 to the ring receiver 3c, and 5b is a screw for the wiper mounting bracket.
6 is a ring-shaped thin plate attachment that fits into the recess of the component; 6 is a thin plate attachment fixing screw for fixing the thin plate attachment to the rotating ring 2b; as shown in the figure, the thin plate attachment 5a is attached to the rotating ring 3b at multiple locations; Fixed.

Next, the operation of the parts feeder having the configuration shown in FIG. 4 will be explained using cross-sectional views shown in FIGS. 5 to 8. Figures 5 to 8 are A shown in Figure 4 respectively.
-A' sectional view, B-B' sectional view, C-C' sectional view, D
-D′ cross-sectional view. The parts inserted into the bottom of the ball 1 by some means are subjected to torsional vibration by the vibration exciter 7 shown in FIG. It rises, moves on a guide 2a provided at the end of the track 2, assisted by a wiper 5, in the direction of arrow a in FIG. 4, and is transferred to the ring 3. FIG. 5 is a cross-sectional view of this situation. Since the constituent elements in this figure are the same as those in FIG. 4, their explanation will be omitted. In the figure, the ring support support 3d is shaded with one dot. Although it does not appear in this cross-sectional view, it is clearly shown to show how the ring support 3c is supported by the ring support support 3d. be. In addition, in the figure, the shaded parts are the parts that are in contact with the cross section when cut into the cross section, the white parts are the parts that are not in contact, and the black parts are the parts that are welded. In addition, the areas surrounded by two diagonal lines and lightly painted in black indicate parts.
This also applies to the cross-sectional views shown in FIGS. 6 and 7. The rotating ring 3b is divided into a plurality of parts as shown by dotted lines in FIG. 4, and the rotating ring 3b is divided into a plurality of parts as shown in FIG. It is supported by the receiver 3c. Due to the structure of these two points,
The rotating ring 3b is designed to rotate easily. The rotating ring 3b has such a structure, vibrates in conjunction with the bowl 1, and rotates in the direction of the arrow b, and the parts move along the guide 3c with the longitudinal direction of the cylinder of the rotating ring c as the traveling direction. If the U-shaped recess of the rotary ring 3b matches the position of the guide 2a when it comes into contact with the rotary ring 3b, the part will fit into the U-shaped recess of the rotary ring 3b,
Components that do not fit into the U-shaped recess of rotating ring 3b because the conditions are not met are also attached to fixed ring 3.
In some cases, a is inclined downward toward the outer periphery, so that it moves with the rotation of the rotating ring 3b, and some parts fit into the U-shaped recess of the rotating ring 3b on the way. At this time, among the parts that fit into the U-shaped recess, the parts that are transferred with the recessed notch first fit into the thin plate attachment 6, and the other parts just fit into the U-shaped recess. Only. Furthermore, there are various possible means within the bowl 1 for correcting the posture of the parts when moving the guide 2a so that the longitudinal direction of the cylinder is in the direction of movement, but since they are not related to the gist of the present invention, their description will be omitted. moreover,
Depending on the timing, parts may overlap, and in this case, the wiper 5 removes the overlap. Some of the parts that did not fit into the U-shaped recess of the rotating ring 3b and parts that were removed by the wiper 5 are removed from the notch of the bowl 1 by the rotation of the rotating ring 3b and the vibration of the fixed ring 3a. from there into bowl 1.

Subsequently, the component fitted into the U-shaped recess of the rotating ring 3b reaches the first elongated hole 3e as the rotating ring 3b rotates. FIG. 6 shows this situation. In the figure, 3h is a return port provided in the receiving box 3g for returning the parts removed from the ring 3 into the bowl 1. Since the other components are the same as those in FIG. 4, their explanation will be omitted.
Due to the rotation of the rotating ring 3b, the part moves into the first elongated hole 3e.
Parts that do not fit into the U-shaped recess of the rotating ring 3b while passing through the U-shaped recess of the rotating ring 3b fall from the first elongated hole 3e into the receiving box 3g and are removed. Only the parts fitted into the letter-shaped recesses move as the rotary ring 3b rotates.

Furthermore, the component moves as the rotating ring 3b rotates and reaches the second elongated hole 3f. FIG. 7 shows this situation. Since the constituent elements in this figure are the same as those in FIGS. 4 and 6, their explanation will be omitted. While the parts pass through the second elongated hole 3f due to the rotation of the rotating ring 3b, the parts that do not fit into the thin plate attachment 6 fall from the second elongated hole 3f into the receiving box 3g and are removed, and are removed from the second elongated hole 3f. The only part fitted to the thin plate attachment 6 is the rotating ring 3b.
It moves with the rotation of. Here, the vertical distance d between the thin plate attachment 6 and the top surface of the fixing ring 3a shown in FIG. The parts with the side without the notch at the top are ejected.

Eventually, the parts move as the rotating ring 2b rotates and reach the chute 4. FIG. 8 shows this situation. In the figure, 3i is a delivery port for guiding the parts to the chute 4, and 3j is a stopper for stopping the parts at the position of the delivery port 3i.
Since the other components are the same as those in FIG. 4, the stopper 3j allows the wall surface of the chute 4 on the rotary ring 2b side to be stopped as shown in FIG. After making a half turn using the end as a fulcrum, it falls through the tube of the chute 4.
The cross-section of the tube of the chute 4 has a cross-sectional shape suitable for allowing the parts to fall without overlapping each other with the longitudinal direction of the tube as the traveling direction, except for the space in which the parts are rotated half a turn.

[Problems to be solved by the invention] However, as is well known, the rotational speed (that is, the supply capacity of the parts feeder) and the vertical movement of the rotating ring 3b are proportional to the amplitude of the torsional vibration of the parts feeder, and conversely, the torsional vibration of the parts feeder The amplitude of is inversely proportional to the weight of the rotating ring 3b. Also,
Sorting efficiency is inversely proportional to the amplitude of torsional vibration of the parts feeder. For this reason, if the amplitude of the torsional vibration of the parts feeder is increased in an attempt to increase the supply capacity, the vertical movement of the rotary ring 3b will increase, and as a result, the accuracy of the sorting distance d shown in FIG. Discrimination efficiency deteriorates. Conversely, in an attempt to increase the efficiency, if the vibration conditions of the vibrator 7 are changed to reduce the amplitude of the torsional vibration of the parts feeder, or the weight of the rotary ring 3b is increased, the rotational speed of the rotary ring 3b, That is,
Supply capacity decreases. That is, there is a drawback that it is very difficult to adjust the appropriate amplitude of the torsional vibration of the parts feeder. In addition, since the rotating ring 3b has many U-shaped recesses shaped to match the conveyed parts on its inner circumferential surface in a radial pattern similar to an internal gear, steel material that is easy to cut is used. There is a tendency for the separation distance d shown in FIG. 6 to change easily due to significant wear. In order to cover this wear, the fixed ring 3a, rotating ring 3b, and thin plate attachment 6 are heat treated and coated in various ways, but since it is necessary to keep the sorting distance d constant, many man-hours are required to remove distortion. shall be.

[Means for solving the problem] The fixing ring 3a is provided with a function of determining the attitude of the parts.

[Function] The sorting distance d in FIG. 6 is no longer affected by vibration.

[Embodiment] FIG. 1 is a top view of a parts feeder to which the present invention is applied to the parts feeder sorting device described in the prior art section, and FIG. 9 is a sectional view taken along line C-C' of the parts feeder. Fixing ring 3 in Figures 1 and 9
The other components are the same as in FIG. 4, except for the function of the rotary ring 3b, the thin plate attachment 6, and the lack of the thin plate attachment screw 6a, so their explanation will be omitted. In order to understand the difference between the conventional technology and the selection function of the present invention, explanation will be given using a sectional view taken along the line C-C' in FIG. As shown in FIG. 9, compared to FIG. 7 which shows a C-C' sectional view of the same location in the prior art, in the present invention, in order to give the rotary ring 3b a sorting function, it is fixed to the rotary ring 3b. The thin plate attachment 6 is eliminated, and the tip of the fixing ring 3a is formed to have a hook-like cross section, so that the fixing ring 3a has a function of determining the attitude of the parts. Therefore, the part selection distance d shown in FIG. 9 is determined only by the shape of the hook-shaped section at the tip of the fixing ring 3a.

[Effects] As described above, in the sorting device of the present invention, the hook-shaped section at the tip of the fixing ring 3a has the function of determining the attitude of the parts, and therefore has the following effects.

(1) The accuracy of the screening distance d can be easily obtained, and each member can be easily processed.

(2) Even when the rotating ring 3b dances up and down, the sorting distance d is not affected by the torsional vibration of the parts feeder, the movement of parts on the ring 3 becomes smooth, and the sorting efficiency is significantly improved.

(3) Of the hook-shaped section at the tip of the fixed ring 3a, the inner circumference of the section related to the sorting distance d does not wear out, so there is almost no change in the sorting distance d, so wear-resistant treatment is applied. There is no need to do this, and even parts with minute notches can be effectively sorted with high precision.

(4) Since the fixed ring 3a has a component attitude determination function and the rotating ring 3b has a supply function independently, mutual adjustment is not required and adjustment is very easy.

[Brief explanation of drawings]

Fig. 1 is a top view of a parts feeder to which the sorting device of the present invention is applied, Fig. 2 is a front view of a parts feeder equipped with a rotating ring and a chute, Fig. 3 is an external view of conveyed parts, and Fig. 4 is a diagram of the conventional technology. A top view of the parts feeder to which the sorting device is applied, FIG. 5 is a sectional view taken along line A-A' of the parts feeder shown in FIG. 4, FIG. C-C′ sectional view of the parts feeder in the figure,
8 is a sectional view taken along line D-D' of the parts feeder shown in FIG. 4, and FIG. 9 is a sectional view taken along line C-C' of the parts feeder shown in FIG. 3a... Fixed ring, 3b... Rotating ring, 3
c...Ring receiver.

Claims (1)

[Scope of utility model registration request] A ball having two end faces and a spiral track therein for conveying a part having a notch on one end face upward; a vibrator that applies torsional vibration to the ball; A fixed fixing ring and a U-shaped recess for fitting a large number of the components on the inner circumferential surface for conveying the components on the fixing ring in the circumferential direction, and are divided into a plurality of parts. a rotating ring positioned above the fixed ring with an appropriate clearance;
a ring-shaped ring holder for supporting the rotating ring; a ring holder support for fixing the ring holder to the outer peripheral surface of the bowl; and a ring holder support provided at the end of the track for transferring the component onto the fixed ring. A parts feeder with a ring comprising a guide member for the fixing ring, an elongated hole provided at a predetermined location of the fixing ring, a means for circulating the parts into the ball provided below the elongate hole, and a guide member for the fixing ring. A hook-shaped protrusion provided on the entire circumference or a part of the outer periphery to allow the parts to be sorted together with the elongated hole, and a hook-shaped protrusion provided downstream of the rotary ring in the elongated hole in the rotational direction. It consists of means for transporting the above-mentioned parts to the next process, and the above-mentioned parts that have been conveyed in a position where the notch of the above-mentioned parts does not fit into the tip of the protrusion are refluxed into the ball through the elongated hole by the above-mentioned reflux means. At the same time, the parts that have been transported in such a position that the notch of the part fits into the tip part are transferred to the next process in this position by the transfer means, thereby giving the fixing ring the function of determining the position of the part. A parts sorting device for a parts feeder, characterized in that the accuracy of determining the orientation of the parts is improved.