JPS6076927A - Washers and nuts receiving and transferring apparatus - Google Patents

Abstract

PURPOSE:To permit certain chucking and easy feeding of a screw part by permitting washers and nuts to be position-arranged and transferred to the screw part of a crankshaft, during the automatic assembly process for an engine. CONSTITUTION:A multistage-type washer feeder 1 has a same structure to that of a multistage-type nut feeder 2, and the feeding parts 4a-4c of these feeders are separated each other at an angle of 90 deg., and an elevator 8 is arranged between them. At a part of a lifting base 15, a screw part which is screwed with a screw rod is arranged. The lower edge part of a taper pin 27 is fitted at one edge part of a bracket. A nut screwing apparatus 43 is installed through a turning arm 42 onto the arm 41 of a robot 40 installed onto the contiguous side to the apparatus 8. With such constitution, certain chucking is permitted, and the screw part can be supplied easily.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention is applicable to, for example, an automatic assembly process of an engine.
The present invention relates to a washer nut delivery device used for supplying washers and nuts to a threaded portion of a crankshaft.

[Technical background of the invention and its problems]

For example, when tightening a nut onto a threaded part of a crankshaft in an automatic engine assembly process, first a washer is supplied, then a nut is supplied, and this nut is then tightened by a nut tightening device such as a nut runner. is fixed. However, since Enkun is not limited to one model, but several models are mixed together on the line, it is necessary to replace the washers and nuts depending on the model. Therefore, a multistage washer feeder that supplies a plurality of types of washers and a multistage nut feeder that supplies a plurality of types of nuts are provided, and washers and nuts are supplied from these feeders.

However, it is very difficult to chuck the supplied washers and nuts one by one, and it is especially difficult to chuck mechanically, especially when the washer is a thin plate-like object because it is in close contact with a flat surface. The reality is that automatic delivery equipment has not been put into practical use because it is extremely difficult.

[Purpose of the invention]

This invention has been made based on the above circumstances, and its object is to be able to reliably take out and deliver multiple types of washers and nuts one by one from a feeder that supplies washers and nuts, and to deliver washers and nuts at the time of delivery. You can reliably chuck nuts. The present invention aims to provide a washer/nut delivery device.

[Summary of the invention]

This invention provides a washer take-out member and a nut take-out member on a lifting platform that can accommodate each supply section of a multi-stage washer feeder and a nut feeder, and these take-out members are provided with a downward direction through the through hole of the washer/nut supplied to the above-mentioned supply section. A taper pin is provided protrudingly to be inserted from the top, and a washer/nut inserted into the tip or bottle can be chucked by the washer chuck and nut chuck.

[Embodiments of the invention]

The present invention will be described below based on an embodiment shown in the drawings. In FIG. 1, 1 is a multi-stage washer feeder, and 2 is a multi-stage nut feeder. These feeders 1, 2
Since they have the same structure, one of them will be explained based on FIG. 2.The upper and lower three stages are one feeder 2&, 2b.

2c, and a plurality of types of nuts of different sizes are supplied by vibration. and,
Each of these goal feeders 2a.

Linear feeder Ja is installed at the unloading section of 2b, 2c.

3b and 3c are arranged in series, and supply parts 4a and 4 are provided at the tips thereof.
b, 4c are provided. These supply parts 4a, 4b,
4c is provided with a notch 5, and as shown in FIGS. 4(A) and 4(B), a washer 6 at the forefront end
The through hole 6a of the nut 2 and the through hole 7a of the nut 2 are arranged to face each other.

In addition, the above washer feeder 1 and nut feeder -da 2
The supply parts 4a, 4b, 4c are spaced apart from each other at an angle of 90', and a lifting device 8 is installed between them. This lifting device 8 is constructed as shown in FIG. That is, 9 is an upright frame body, and on this frame body 9 are arranged parallel guide rails 10.degree. 10 that are vertically installed and a screw rod 11 that is installed between them. A pulley 12 is fitted to the lower end of this screw rod 11, and this pulley 12 is connected to the toothed belt 1.
It is linked to the ACC serve motor 1 via 3. Further, an elevating table 15 is provided on the guide rail 10.10 so as to be movable up and down, and a part of the elevating table 15 is provided with a threaded portion 16 that is threadedly engaged with the screw rod 11.

Therefore, the lifting platform 15 is raised and lowered by the rotation of the screw rod 11, and is adapted to correspond to the supply sections 4a, 4b, and 4c of the washer feeder 1 and nut feeder 2. This elevating table 15 is formed in an L-shape, and one end 15a is for the washer feeder 1, and the other end 15b is for the respective supply parts 4a of the nut feeder 2.

It faces 4b and 4c. One end part 1 of the above-mentioned lifting platform J5
A rail 17 and a rodless cylinder 18 are attached to the 5th in parallel along its longitudinal direction. A washer takeout member 20 is attached to this rail 17 via a slider 19 so as to be able to reciprocate. This washer take-out member 20 is connected to the above-mentioned opening via a connecting tool 21.
It is connected to the movable part 18a of the dressing cylinder 18.

This washer takeout member 20 is formed in an inverted shape as shown in FIG.
3 and a through hole 24 are provided. This bottle support stand 2
A taper pin 27 is pivotally supported on the pin 3 via a goal bush 25 so as to be able to extend vertically. This taper bin 2
A chie I4 portion 28 is formed at the upper end of the tapered portion 28, and the small diameter portion of this tapered portion 28 is formed to be thinner than the through hole 6a of the washer 6, and the large diameter portion is formed to be thicker than the through hole 6a. The lower end of this cheek pin 27 is attached to one end of a bracket 29, and a guide rod 30 is attached to the other end of this bracket 29.
is fixed in the vertical direction. The upper end of the guide rod 30 passes through the through hole 24 and projects upwardly from the upper plate 22, and a spring 31 is wound around the lower end to bias the guide rod pso upward.

When the washer take-out member 20 configured in this way is moved to the leftmost end in the figure by the rodless cylinder 18, its teeth 27 are in the notches 5 provided in the supply parts 4&, 4b, 4c of the washer feeder 1. Facing directly below,
When moved to the rightmost end in the figure, it is located at the washer delivery section 32.

Further, a nut extension member 33 is provided at the other end 15b of the lifting platform 15, but its basic configuration is the same as that of the washer removal member 2θ, and the same components are designated by the same numbers with the letter a. The explanation will be omitted and only the different parts will be explained. That is, an annular groove 34 is provided on the top surface of the bottle support 23a, and an O-ring 35 made of a rubber material with high frictional resistance is fitted into the annular groove 34. Slightly prominent. Further, the tapered bottle 27a has a flat shaft shape, and the small diameter portion of the tapered portion 28a is formed to be narrower than the through hole 7a of the nut 7, and the large diameter portion is formed to be thicker than the through hole 7a. Furthermore, the taper portion 28&
The hole 7a of the nut 7 has a flat notch on both sides.
That is, the contact area with the screw is reduced to prevent engagement. Note that 36 is a nut delivery section.

On the other hand, a robot 40 is provided next to the lifting device 8, and a nut tightening device 43 is provided to a rotating arm 41 of the robot 40 via a rotating arm 42.

This nut tightening device 43 consists of a washer chuck 44 and a nut runner 45, and a nut chuck 46 is provided at the lower end of the nut runner 45.

In addition, 47 is a nut tightening part such as a crankshaft of Enzon.

Next, the operation of the washer/nut delivery device constructed as described above will be explained.

To explain the case where the washer feeder 1 supplies the washer 6 from the lefig 2a and the nut feeder 2 supplies the nut 7 to the threaded portion 47 in this order, the washer 6 is supplied to the threaded portion 47. Nuts 6 and 7 are supplied to the supply section (a) via the linear feeder 3a, respectively, and the through holes 6a and 7m thereof face the cutout section 5.

On the other hand, the elevator table 15 is raised to the height of the top stage, that is, the galley feeders 2a, 2a, by the rotation of the screw rod 1), and then stopped. Therefore, rodless cylinder 1
8 is activated, the washer takeout member 20 is moved to the rail J7.
When the taper bin 27 moves to the left in the figure along the arrow and is located at the leftmost end, the taper bin 27 faces directly below the notch 5 of the supply section 4a.

Further, the nut removing member 33 moves forward along the rail 17h, and the taper bin 27a faces directly below the notch 5 of the supply section 4a. Therefore, the 4-pin 27 faces the m hole 6a of the washer 6 and the 4-pin 27a faces the through hole 7a of the nut 7. In this state, when the lifting platform 15 is raised one pitch by the lifting device 8, the cheek/4' pin 27 is inserted into the through hole 6a of the washer 6, and the cheek pin 27a is inserted into the through hole 7a of the nut 7.

Next, when the washer take-out member 20 and the nut take-out member 33 move back by the rodless cylinder 18.18m, the washer 6 is conveyed to the washer delivery section 32 and the nut 7 is conveyed to the nut delivery section 36, where they stand by.

On the other hand, when the rotating arm 4 of the rodet 40 rotates, the washer chuck 44 faces the washer delivery section 32,
A nut chuck 46 faces the nut transfer section 36.

When the washer chuck 44 descends, a part of it contacts the guide rod rod 30, and when it further descends, the guide rod 30 retracts against the restoring force of the spring 31, and the taper bin 27 also retracts via the bracket 29. do. At this time, the Chi/4' portion 28 of the Chi 2 mother pin 27
A washer 6 is fitted to the holder, and the washer 6 may be fitted at an angle. However, when the mother bottle 27 is retracted and its chi/upper part 28 is retracted to the washer support part 23b of the bottle support stand 23, the washer 6 is supported by the washer support part 23b of the bottle support stand 23, and the washer 6 is Even if it is tilted, it will be aligned horizontally. At this time, the washer chuck 44 is attached to the washer support portion 23.
Chuck the washer 6 on b. When the washer chuck is completed and the washer chuck 44 is raised,
The guide rod 30 protrudes upward due to the restoring force of the spring 31, and the Qi Senpi/27 also returns to its original position. On the other hand, when the nut chuck 46 is lowered by the nut runner 45, a part of the nut chuck 46 pushes down the guide rod 30m, and the tenor arm pin 27h is also retracted in the same manner as described above, but the nut 7 is fitted into the tenor 4 portion 28a of the taper pin 27h. There is.

Therefore, when the f-bin 27a is retracted, the nut 6 is placed on the O-ring 35. When the nut chuck 46 further descends, the nut 7 on the O-ring 35 is attracted to the nut chuck 46.

When the washer 6 and the nut 7 are chucked in this manner, the pivot arm 41 pivots, and further the pivot arm 42 pivots. Then, the washer chuck 44 first faces the nut tightening part 47 of the crankshaft, opens the washer chuck 44, and supplies the washer 6 to the threaded part.

Next, the nut chuck 46 also faces the threaded portion,
Supply the nut 7 to the threaded part. And Natsutranna 4
5 to the r threaded part 47.

Tighten 7.

In the above embodiment, a case was described in which washers 6, nuts, and doors were supplied from the upper pole feeders 2h and 2g, but washers 6 and nuts 7 of different sizes were supplied from the middle or lower pole feeders 2c and 2c. When feeding, the lifting platform 15 may be lowered by the lifting device 8, and either pole feeder 2a may be fed.

It can also be taken out from 2b and 2c.

〔Effect of the invention〕

As explained above, according to the present invention, the washers and nuts supplied to each supply section of the multistage washer feeder and nut feeder are reliably taken out one by one and delivered to the washer chuck and the nut chuck. Also, at this time, the washer and nut can be aligned and transferred, so chucking can be done reliably.
This has the advantage that the supply of parts can be carried out easily.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a plan view of the whole, Fig. 2 is a side view thereof, Fig. 3 is a perspective view of the lifting device, and Fig. 4 (At, (B) A plan view of the supply section, FIG. 5 is a partially cutaway front view of the main parts 1... washer feeder, 2... nut feeder, 4a, 4b, 4c,
... Supply section, 6... Washer, 7... Nut, 8.
... Lifting device, 15... Lifting table, 20... Washer removal member, 27.27a... Taper bin, 33...
・Nut extraction member, 32... washer delivery part, 3
6... Nut delivery section, 43... Nut tightening device,
42... Nut tightening part. Applicant's agent Patent attorney Takehiko Suzue Figure 6 Figure 7

Claims (1)

[Claims] A multi-stage nut feeder that supplies multiple types of washers and a multi-stage nut feeder that supplies multiple types of nuts. A lifting device installed opposite to both the supply parts of the washer feeder and the nut feeder in the delivery device for the washer feeder and the nut feeder;
An elevating table that can be raised and lowered by the elevating device to accommodate the supply sections of each stage of the washer feeder and nut feeder, and a supply section of the washer feeder that is provided on the elevating table so as to be able to reciprocate in a direction perpendicular to the direction of elevation. a washer removal member protruding from a Teno arm pin inserted from below into the through hole of one washer located at the foremost end of the washer; On the movement path of the drawer ejecting member, the washer ejecting member, and the nut ejecting member, which protrudes from a teno f pin inserted from below into the through hole of one of the slots located at the forefront end of the supply section of the feeder. 1. A washer delivery device comprising: a nut tightening device for chucking the washer and nut and transporting the washer and nut to a nut tightening section.