JPS5928978Y2 - Parts feeder bowl with integrated drawing structure made of thin steel plate - Google Patents

Description

[Detailed description of the invention] This invention uses an electromagnetic vibration method that automatically sorts nuts (projection nuts) from front to back and size, aligns them in the desired direction, and continuously or intermittently supplies them to a spot welder, etc. This invention relates to an improvement to the bowl of a parts feeder.

Regarding conventional parts feeder bowls, the cast metal bowl shown in Figure 1 is heavy and difficult to miniaturize, and requires a large number of machining steps. are easy to machine, but they are subject to severe wear, and castings, duralumin alloys, and aluminum alloys all suffer from oil (cutting oil used when machining the nut, which may stick to the nut, and rust-preventing oil). There was a drawback that if the material (coated on the nuts) adhered to the spiral track, the ability to sort, align, and supply nuts would be reduced.

There is also an iron bowl shown in Figure 2, but the processing order is first to draw it into a bottomless bowl or pan shape, then weld the spiral track parts to this, and then weld the bottom part, which requires a lot of processing man-hours. There was a drawback that there was a blockage (stagnation) of Natsuto.

This device was devised to eliminate the above-mentioned drawbacks and disadvantages, and to shorten the processing man-hours.It is inexpensive and reliable, automatically sorts the front and back sides of the nuts, and the size, aligns them in the desired direction, and spots them. The object of the present invention is to provide a bowl of an electromagnetic vibrating parts feeder that is continuously or intermittently supplied to a welding machine or the like, and is formed of a thin steel plate into an integral drawing structure.

The selection and supply of nuts (for example, square projection nuts) according to an embodiment of this invention shown in the drawings will be described below.

50 in Figure 3 is a square nut with a general grosgeection (generally, the thread size of the nut used is M4 to M12), and as the thread size increases, the outer dimensions and thickness etc. becomes larger, 51 is its front, 52 is its tail, and 53 is its foot.

In FIG. 4, 1 is a drive unit of a known parts feeder, 2 is a bowl made of an integrally drawn thin steel plate, 3 is its bottom surface, and 4 is its spiral track.
5 is the middle circumferential wall zone, 6 is the upper circumferential wall zone, and 17 is connected to the bowl 2, where the nuts 50 sorted and aligned in the bowl 2 are supplied to a spot welding machine or the like. In the mouth, A indicates the direction in which nuts are fed, and FIG. 6 is a detailed view of the bowl 2 of the present invention.

The nuts 50 thrown randomly into the bottom surface 3 of the bowl 2 are squeezed into an arc shape so that all the nuts 50 can be supplied without remaining.The spiral track 4 that transports the nuts 50 sorts and arranges the nuts 50 as they ascend from the bottom surface 3. Reduce the width of the spiral track 4 to make it easier to read the spiral track 4 (it is best to set the width at the end of the spiral track 4 to be the same as the external width of the M12 size nut 50), and The track 4 is simultaneously squeezed so that it has a downward slope on the outside, and a thin steel plate is integrally squeezed so that a peripheral wall band with an upwardly outward slope is formed in the extension of the spiral track 4. There is.

Nuts 50 placed on the bottom surface 3 of the central circumferential wall zone 5 of the integrally squeezed bowl 2 are gradually transferred along the spiral track 4 in the feeding direction A due to the vibrations received from the drive unit 1 of the parts feeder. - Unaligned items that are folded double or triple or transported while standing on their side are placed in a row by the first guide rail 7 and the nuts 50 are stacked one on top of the other. A first guide rail 7 is fixedly formed on the bowl 2 so that the other nuts 50 fall to the bottom surface 3 while being aligned without being aligned.

In addition, the middle circumferential wall band 5 is provided with two holes for discharging foreign matter such as chips generated during processing of the nut 50 to the outside of the bowl 2. It is set up.

A second guide rail 10 and a fourth guide rail 14, which play the same role as the first guide rail T, are fixed to the upper circumferential wall band 6. In particular, the fourth guide rail 14 can be used to prevent the nut 50 from standing sideways due to some circumstances. It is formed for final damage prevention.

Further, in the upper peripheral wall band 6, the nuts 50 that have been transferred on the spiral track 4 are arranged in the - row by the first guide rail 7 and the second guide rail 10.
Guide rail 11, gate plate 12, and downhill mountain section 13
The nut 50 is arranged in relation to the gate plate 12 so that the desired orientation (for example, facing the back 52) and size (for example, M6 nut 50 size) can be selected. The nuts 50 smaller than M6 are also removed and dropped onto the spiral track 4 below the third guide rail 11, and only nuts 50 of the desired size M6 and larger are selected. However, if for some reason the spiral track 4 is transferred by the nut 50 facing toward the front 51, the stepped protrusion 15 will move the spiral track 4f or the bottom surface 3 downward. However, if the nut 50 is still transferred onto the spiral track 4 in an undesired orientation 51, the check gate 16 will completely prevent the nut from falling, and the nut will be rejected onto the bottom surface 3, etc. Only one nut 50 size M6 with the desired back side 52fl is allowed to pass through the sliding opening 17, and an undesired nut 50 facing the front side 51 and an undesired nut 50 of M8 or larger are passed through the sliding opening 17.
Those of this size are configured to be impossible to pass through.

Next, to explain the operation of this invention in the above configuration, the nuts 50 randomly thrown into the bottom surface 3 are removed by the action of the drive unit 1 of the known parts feeder [Thus, the nuts 50 piled up in the center of the bottom surface 3 are Since the bottom surface 3 is formed in an arc shape, the spiral track 4 starts to move upwardly in the supply direction A by moving the spiral track 4 outward from the center of the bottom surface 3. Since the nut 50 has a downward slope on the outside and a peripheral wall band with an outward slope on the upper side is formed on the extension thereof, it is difficult for the nut 50 to fall. Folding double and triple,
While standing sideways, the user further ascends the spiral track 4 and arrives at the first guide rail 7.

Nuts 50 arrived unaligned on the first guide rail T
The first guide rail 7 is formed in such a way that the first guide rail 7 is divided into two groups: those where the nuts 50 pass through in a line-by-layer arrangement without being caught, and those where the nuts 50 are rejected and fall onto the bottom surface 3. 1 Nuts 5 that passed through the guide rail 7
0 are reliably arranged one by one, and are further transported upward to arrive at the second guide rail 10.

On the second guide rail 10, which plays the same role as the first guide rail 7, the nuts 50, which have already been aligned in one row,
The nut 50 passes through the second guide rail 10 without requiring any special alignment, and then moves upward until the nut 50 reaches the third guide rail 11.

The third guide rail 11 performs the same function as the first guide rail I, and the three related arrangements of the gate plate 12 and the sliding mountain part 13 make it possible to sort nuts 500, front side 51, back side 520, and size selection. formed and therefore the third
When the nuts 50 that have passed through the guide rail 11 and are arranged one by one but are not sorted are further moved upward, a sliding mountain portion 13 having a steep slope opposite to the spiral track 4 is formed on the spiral track 4. Therefore, the nut 550 that has reached the sliding mountain part 13 starts to slide down inside the bowl 2 due to its own weight and vibration. The feet 53 are in contact with the surface, and since the latter half and subsequent surfaces of the third guide rail 11 are provided in the same rounded shape as the middle circumferential wall zone 5, the foot 53 can be in contact with the vertical surface of the third guide 11 when sliding downhill. The nut 50 passes over the mountain part 13 and passes through the gate plate 12, but the nuts 50 that face the surface 51 (undesired) and the nuts 50 that are undesired in size less than M6 pass through the sliding mountain part 13 and slide down to the inside of the bowl 2. When you start, the foot 53 slides down to the middle circumferential wall zone 5 first, and then continues to the back 5.
While sliding down into contact with the boundary between the spiral track 4 and the middle circumferential wall zone 5, the two objects do not fall to the spiral track 4 casing or the bottom surface 3 and pass through the gate plate 12.

Therefore, the nut 50 that has passed through the gate plate 12 is facing the desired back side 52 and is M6 size or larger.
They are sorted into 50 pieces, arranged in one row, and then transported upward to reach the fourth guide rail 14. However, since they are already arranged as desired, they are not arranged on the fourth guide rail 14 without any special arrangement. However, among the 50 size nuts that are still unsorted, only the desired M6 nuts pass through the fourth guide rail 14, but if nuts of M8 or larger are mixed in due to management reasons etc. The nuts 50 are rejected and dropped onto the bottom surface 3 etc. without passing through, and are further moved upward to arrive at the stepped protrusion 15, but this stepped protrusion 15 is formed so as to exclude and fall the nut 50 facing the undesired surface 551. , and here also the fourth guide rail 14
Stepped protrusion 1 without special sorting or alignment in the same way as
5 and arrive at check gate 16.

The check gate 16 is designed so that only nuts 50 of the desired M6 size can pass through the check gate 16, and only one nut 50 can pass through the check gate 16. If the nut 50 is further moved upward, it is ensured that only one nut 50 facing the desired back side 52 and of M6 size is inserted into the sliding opening 1.
7 without clogging up.

Even if the oil applied to the inserted nut 50 adheres to the spiral track 4, since it is integrally squeezed by the thin steel plate,
Since the resonance in the bowl 2 is strong, the nuts 50 are moved upwardly at high speed one after another without reducing the oil's alignment and sorting ability.

If the 50 groups of nuts put into the bottom 3 are mixed with chips or dirt, the foreign matter discharge holes 8 and 9 will remove the nuts from the bowl 2.
The spiral track 4 moves the nuts 50 upward while making alignment and sorting of the nuts 50 smoother, and also prevents the foreign matter from being supplied to the subsequent process after the sliding hole 17, which may cause kinking. The discharge holes 8 and 9 are formed so as not to be caught by the feet 53 moving upward, so there is no chance of encountering them.

Needless to say, this button is also applicable to nuts other than square nuts, washers, etc. in this bowl 2.

This invention has a structure in which a thin steel plate is integrally drawn as described above, and parts for alignment and sorting are attached. It is heavy and large, does not require a lot of processing man-hours, and is subject to severe wear like duralumin alloy and aluminum alloy bowls. The product also does not have the disadvantage of reducing the sorting and arranging ability when oil gets on the bowl, and does not require a large number of processing steps like the iron bowl shown in Fig. The bowl of the parts feeder has an integral drawing structure made of a thin steel plate, which has the advantage of selecting and arranging nuts in the desired direction and size at high speed.

[Brief explanation of drawings]

Figure 1 is a partial cross-sectional front view of the bowl of a conventional parts feeder made of cast metal, duralumin alloy, aluminum alloy, etc., and Figure 2 is a partial cross-sectional front view of the bowl of a conventional parts feeder made of cast metal, duralumin alloy, aluminum alloy, etc. FIG. 3 is a partially sectional front view of a bowl of a parts feeder with a spiral track and a welded bottom; FIG. 3 is a perspective view of a square nut with a general projection; and FIG. This is a perspective view of a bowl of a parts feeder that is integrally drawn and has a sliding opening connected to the bowl and is set on the driving upper part of a known parts feeder. Fig. 7.8.9 is a plan view of the bowl of the invention with parts for arranging and sorting square nuts attached, and Figures 7, 8, and 9 are cross-sectional views of the portion of the bowl of the invention with guide rails and the like attached to the upper circumferential wall band. 1... Parts feeder drive unit, 2...
・Bowl, 3...Bottom surface, 4...Spiral track, 6...Top peripheral wall band, 8...
...Foreign matter discharge hole, 11...Third guide rail,
16...Check gate, 50...Square grosgeection nut.

Claims (1)

[Scope of utility model registration request] In the bowl of an electromagnetic vibration type parts feeder, a spiral track is provided such that the bottom surface is formed in an arc shape, and the width of the track decreases as it ascends from the bottom surface, and the spiral track has a downward slope on the outside and an upward slope. A peripheral wall zone with an outward slope is formed as an extension, the middle peripheral wall zone has two foreign matter discharge holes and one guide rail, and the upper peripheral wall zone has three guide rails and a spiral track. The downhill part with a steep reverse slope is fixed from the upper peripheral wall zone towards the spiral track,
A parts feeder bowl in which a check gate is provided on the upper circumferential wall band at the end of the spiral track, and this is connected to a sliding opening, and the main body of the bowl is made of an integral drawing structure of a thin steel plate.