JPH0123714Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a vibration conveyance type parts feeder, more specifically, a vibration conveyance type parts feeder that combines a headed shaft and a wheel during conveyance and automatically feeds the parts. It is used when rolling thread cutting is performed on the foot of a rivet, and washered material is automatically supplied to a device that forms a washered screw.

(Prior Art) Conventionally, an assembling machine that combines and feeds a headed shaft and a wheel is known, for example, from Japanese Patent Application Laid-Open No. 155131/1981. In addition to the problem of installation space because it is installed separately from the vibrating parts feeder that feeds the wheels and wheels, the assembling machine itself is a rotating body with a head shaft fitting groove and a wheel fitting groove. It is a complex, large-scale, and high-cost device that is equipped with a drive device that rotates the rotating body intermittently.

On the other hand, there are compact and relatively inexpensive vibrating parts feeders in which the parts feeder itself combines a headed shaft and a ring.
It is known from Publication No. 46642. As seen in the disclosed embodiments, this device has a shaft conveying path for suspending and vibratingly conveying the headed shaft body, and a wheel conveying path for vibratingly conveying the wheel body, which are disposed vertically and gradually By bringing them close to each other, the headed shaft body and the wheel body that are vibrated and conveyed are brought closer to each other and fit into each other, and thereafter, the assembled state is vibrated and conveyed by being suspended by the washer part. In addition, a contrivance has been made to form a chevron-shaped protuberance on the wheel transport path so that the wheel waits in an inclined position in which the shaft body is easily fitted.

(Problems to be solved by the invention) In the conventional method, the hanging end of the shaft being suspended and conveyed and the wheel being conveyed below fit together simply by approaching each other vertically, without any positioning in the conveying direction. Because they fit together, they are difficult to fit into each other and have a low combination success rate. Furthermore, the provision of the chevron-shaped raised portion makes it easier for the hanging end of the shaft to fit into the wheel which reaches the raised portion and waits in an inclined position, but the hanging end of the shaft still scans over the wheel. When the shaft slides like this and fits into the wheel hole, it gets caught, and the wheel is pulled by the hook and gets over the protrusion, fitting deeply into the wheel. The wheel may come off without being able to bring the wheel along with it even though it is desperately caught in the hole, or the next wheel may not ride on the raised portion even though the shaft has reached the raised portion, and the fit may not fit properly. The probability of
It only reaches around 60%.

If this were to meet the demand for combining two rings with one shaft, the probability of fitting would drop to 36%, making it unusable.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a method for vibrating conveyance of a wheel in a lying state at the end of the wheel body conveyance path, which is placed at a position approximately perpendicular to the vibration conveyance direction. A bending path that bends to prevent the progress of the vibrating conveyed object and waits in a vibrating state is extended, and a separate shaft conveyance path that vibrates and conveys the headed shaft so that the shaft side faces first is installed in the bent path. A detection means is provided to feed the headed shaft from above on the axis of the waiting wheel and fit it into the waiting wheel, and detects when the headed shaft has reached the fitting position with the waiting wheel. a combination conveyance path for receiving and vibratingly transporting a combined body in which a wheel and a headed shaft are fitted together from the bending path; The present invention is characterized by comprising a sending means for sending out the combination body with the combination body to the combination body conveyance path.

The wheel body conveyance path and the bending path can be arranged up and down depending on the number of wheels to be fitted to the shaft body, thereby making it possible to fit a plurality of wheels and one shaft body.

The shaft conveyance path has a pipe-shaped conveyance path at the end in order to ensure vibration conveyance of the headed shaft in a line in the length direction and to feed the headed shaft from above to the bending path without falling off. is desirable.

The detection means may detect the presence or absence of a specific portion located only with respect to the headed shaft that can be fitted into the wheel, and may employ various known methods such as a proximity switch or a photo sensor.

The delivery means is suitably an air nozzle, but other methods such as a mechanical pusher may also be used.

Although it is preferable that the combination conveyance path carries out vibratory conveyance while suspending the headed shaft by a washer portion fitted thereto, it may be modified in various ways depending on other reasons.

(Function) The bending path is oriented almost perpendicular to the direction of vibration conveyance of the wheel vibratingly conveyed from the wheel body conveying path, so that it receives the wheel body vibratingly conveyed from the wheel body conveying path without generating a component force in the direction of the path, and continues the wheel body. It prevents the wheel from proceeding along with the following wheel on the wheel conveyance path and makes it stand by in a vibrating state.
On the other hand, the shaft body conveyance path is a wheel in which the headed shaft body, which has been vibrated and conveyed with the shaft side facing first, reaches the bending path and is placed in an appropriate fitting posture and position with respect to the wheel body which is placed on standby for vibration. It is fed out from above on the body axis line and fitted together with the automatic search action of the fitting position due to vibration. The feeding means operates when the detection means detects that the headed shaft body to be fed has reached a position where it would have fit into the wheel body held in the bending path, that is, a fitting position. Then, the fitted combination body is sent out to a combination body conveyance path, and is thereafter conveyed by vibration.

(Example) (Fig. 1, Fig. 2, Fig. 3) When applied to a vibration conveyance type parts feeder using a helical slope, a small diameter conical spring as a wheel is attached to a stud 1 as a shaft with a head. An example is shown in which two washers 2 and a large-diameter flat washer 3 are combined.

As seen in FIG. 1, a spiral slope type shaft conveying path 5 vibrates and conveys the studs 1 to the inner circumference of the bowl 4.
is formed, and wheel conveying paths 6 and 7 for vibrationally conveying the washers 2 and 3 are formed on the outer periphery of the bowl 4. The shaft transport path 5 transports the rivets 1 put into the bowl 4 in the length direction while following the inner periphery of the bowl 4. ), while dropping the rivets 1 with the heads 1a facing forward into the bowl 4, only the rivets 1 with the heads 1a facing backwards in a predetermined direction are vibrated and conveyed forward. It has a pipe-shaped conveyance path 5a extending outward.

The wheel body conveyance paths 6 and 7 are used to transport washers 2 and 3 by vibration from individual parts storage sections provided on the outer periphery of the bowl 4, or by separating washers 2 and 3 which are vibrationally transported from a single parts storage section based on their differences in size and shape. After that, they are individually vibrated and conveyed, and the wheel body conveying path 6 of the washer 2 already has a known reverse washer removal part (not shown) in the middle thereof, so that the convex conical surface faces downward. Eliminate Natsuru Watsushia 2,
Only the washer 2 in the proper orientation, with its conical convex surface facing upward, is vibrated and conveyed forward.

Bent paths 6a and 7a extending toward the center of the bowl 4 and bent almost at right angles to the vibration conveyance direction are provided at the ends of the respective wheel body conveyance paths 6 and 7. The incoming washers 2 and 3 are received without any component force being generated in the direction of the path, and their progress is prevented together with the following washers 2 and 3 on the conveying paths 6 and 7 following them, and the washers are kept on standby in a vibrating state. There is. The bending paths 6a and 7a are the respective wheel body conveyance paths 6,
The ends of closed conveyance paths 6b and 7b, which are provided so as to align the washers 2 and 3 to be vibrated and conveyed in a single line at the end of the bowl 7, are bent to open toward the center of the bowl 4. (3rd
Figure) The closed conveyance paths 6b, 7b and the bent paths 6a, 7a are
It is formed by a block 8 made of laminated plate materials, and has a bending path 6 as shown in FIGS.
The washers 2 and 7a are connected integrally with the wheel conveying paths 6 and 7 in an inclined state so that the openings 6c and 7c of the openings 6c and 7c of the washers a and 7a are slightly slanted upward, and are held in a vibrating state when they reach the bending paths 6a and 7a. 3 is vibration and opening 6
This is to prevent it from shifting toward the c and 7c sides or popping out.

Openings 6c, 7 are provided in the top plate 9, partition plate 10, and bottom plate 11 that make each bending path 6a, 7a into a pocket shape.
A shaft relief slit 12 cut from the c side is formed to receive the foot portion 1b of the stud 1 and not to impede its feeding. Also, each slit 1
The inner edge of 2 is a mortar-shaped inclined guide surface, and the rivet 1
The foot portion 1b of the foot portion 1b is made to easily slide into the slit 12.

Above the bending paths 6a, 7a, the tip of the pipe conveyance path 5a of the shaft body conveyance path 5 is located above the bending paths 6a, 7a.
7a, so as to be located on the axis of the washers 2 and 3 that are on standby, and open in almost the same direction as the washers 2 and 3, so that the shaft side faces first from above on the axis of the washers 2 and 3 that are on standby. We try to supply it in the same condition.

The top plate 9 covering the upper bending path 6a is provided with a receiving tube that receives the studs 1 supplied from the shaft conveyance path 5 and holds them in a mating posture with respect to the washers 2 and 3 waiting in the bending paths 6a and 7a. 13 is provided, but this may be a part of the shaft conveyance path 5.

The rivets 1 supplied to the receiving tube 13 fall onto the washer 2 whose foot portion 1b fits into the slit 12 of the top plate 9 and which is waiting in the bending path 6a.
When it is fitted into the washer 3, it falls through the slit 12 of the bending path 6a onto the standby washer 3 of the bending path 7a, and is fitted into the hole 3a of the washer 3. The fitting of the legs 1b into the holes 2a, 3a of the washers 2, 3 is as follows:
Although the washers 2 and 3 are in the bending paths 6a and 7a and are in a standby state, having been prevented from advancing by the vibration conveyance, they are located in the vibration conveyance system and continue to receive vibrations, causing them to vibrate little by little. This is done quickly and reliably, as if the two parties are trying to find a position.

The rivet 1, whose foot portion 1b is fitted into each hole 2a, 3a of the washers 2, 3, has the foot portion 1b fall below the bending path 7a through the slit 12, and the head portion 1a is attached to the top plate 9.
It is received by the edge of the slit 12.

A proximity switch 14 is provided below the bending path 7a to detect the foot portion 1b that has fit into the holes 2a, 3a of the washers 2, 3 or fallen down as it is, and It is detected that the mating position has been reached.

On the open side of the slit 12 at the lower end of the receiver tube 13, a delivery port 15 for the rivet head 1a received on the top plate 9 is formed, and air is blown into the interior from the slit 13a on the delivery port 15 side of the receiver tube 13. An air nozzle 16 is provided to blow air onto the stud 1 in the receiving tube 13 until the stud 1 is fitted with the washers 2 and 3 and detected by the switch 14. I try not to lose my posture.

On the other hand, air nozzles 17 and 18 that spray air when the switch 14 detects the fitting of the stud 1 to the washers 2 and 3 are connected to the back of the lower end of the receiving tube 13 and the back of the bending path 7a. A combination in which jet air is blown onto the tack head 1a and the large-diameter washer 3 of the combination body with 2 and 3, and the combination body is conveyed by vibration from the bending paths 6a and 7a to the combination body provided so as to continue from the bending paths 6a and 7a. It is adapted to be pushed out to the body transport path 19.

The combination conveyance path 19 consists of two upper and lower vibrating conveyance paths 19a and 19b formed on the outer periphery of the bowl 4, both of which have slits 19c that allow the foot portions 1b of the studs 1 to escape.
The upper vibrating conveyance path 19a receives the heads 1a of the combined studs 1 continuously fed out from the bending paths 6a and 7a on the top plate 9, and vibrates and conveys the studs 1 in a suspended manner. The lower vibration conveyance path 19b is connected to the bottom plate 11
Continuing with this, both upper and lower washers 2 and 3 fitted with the foot portion 1b of the stud 1 are received and conveyed by vibration. The upper vibration conveyance path 19a and the lower vibration conveyance path 19b are
The ends of the upper vibrating conveyance path 19a are set at points that are close to each other and have an appropriate drop, and the studs 1, which have been vibrated and conveyed in a suspended manner, are placed on the washers 2 and 3 which are vibrated and conveyed on the lower vibratory conveyance path 19b. As shown in FIG. 1, the assembled body is then suspended by washers 2 and 3 and transported by vibration to a desired location.

If only one washer is combined with the stud 1, the head difference between the top plate 9 and the lower vibrating conveyance path 19b becomes small, and the stud 1 is dropped directly from the top plate 9 onto the lower vibrating conveyance path 19b. However, if the rivet 1 does not fall sideways, separate from the fitted washers 2 and 3, or fall off from the vibrating conveyance path 19b, the upper vibrating conveyance path 19a may be omitted.

Furthermore, it is of course possible to combine three or more wheels to one stud 1 using the same principle as described above, and each vibration conveyance system and the bending path for suppressing vibration conveyance can be implemented in various ways other than the above-mentioned embodiments. It can be similarly applied to a straight type vibrating conveying parts feeder instead of the type using a spiral slope.

(Effects of the invention) According to the present invention, the bending path at the end of the wheel body conveyance path causes the wheel body that has been vibrated to wait in a vibrating state at a certain position, and the shaft body conveyance path supplies the headed shaft body, which has been vibrated and conveyed with the shaft side facing first, in the proper mating posture and positional relationship, and the two are fitted together with the automatic search action of the fitting position due to vibration, so that the fitting is possible. Fitting is achieved quickly and reliably, improving the probability and speed of fitting.

In addition, the fit between the shaft body and the wheel body is automatically detected, and in response to this detection, the fitted combination body is immediately sent out from the bending path to the combination conveyance path to be conveyed by vibration, and the next reception is carried out in the bending path. Since the fitting between the wheel body and the supply shaft can be started, the fitting efficiency is improved as well as the fast fitting speed.

Furthermore, even if multiple wheels are fitted to one shaft, by keeping each wheel on the same axis and waiting for vibration, it will produce almost the same effect as a combination with one shaft. I can do it.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the main parts of a vibrating parts feeder using a spiral slope, showing an embodiment of the present invention, Fig. 2 is a sectional view of the main parts, and Fig. 3 is a cross-sectional view of the main parts. FIG. 1... Stud, 1a... Head, 1b... Feet, 2,
3... Washer, 5... Shaft conveyance path, 5a... Pipe-shaped conveyance path, 6, 7... Wheel body conveyance path, 6a, 7
a... Bent path, 12... Slit, 14... Proximity switch, 17, 18... Air nozzle (delivery means).

Claims (1)

[Scope of utility model registration request] At the end of the wheel conveyance path that vibrates and conveys the wheel in a lying state, a bending path is installed that is bent almost at right angles to the vibration conveyance direction to prevent the vibrating conveyed object from progressing and wait in a vibrating state. Separately, a shaft conveyance path for vibrating and conveying the headed shaft body so that the shaft side faces first is provided, and the headed shaft body is fed from above on the axis of the wheel body which is placed in vibrating standby on the bending path to the waiting wheel body. Provided to fit together,
a detection means for detecting that the headed shaft body has reached a fitting position with the standby wheel body; and a combination body that receives and vibrates and transports the combined body in which the wheel body and the headed shaft body are fitted from the bending path. A vibratory conveyance type parts feeder comprising: a conveyance path; and a delivery means for feeding a combination of a wheel and a headed shaft on a curved path to the combination conveyance path based on detection by the detection means.