JPS6251509A - Transferring device - Google Patents

Abstract

PURPOSE:To shorten a working time, by a method wherein, in a device of transferring parts between a conveying device and an assembly working table, a shaft body having a hand at its elevatable and rotatable lower end, is situated to a running body. CONSTITUTION:An assembly part A is conveyed to a given conveying spot by a conveying device 10, and a pallet 12 is stopped. Along with the stop, a running body 2 is run on a rail 1, and a hand 4 is positioned above the assembly A. A shaft body 3 is then lowered. This forces the hand 4 to be unfolded to grasp the part A. The shaft body 3 is raised in a condition that rotation is locked through engagement of gears 5 and 7 with each other, and is conveyed to a support table 13 by the running body. The shaft body 3 is then lowered, and a work is executed in a condition in that the assembly part is grasped by the hand 4 and the gears 5 and 7 are engaged with each other. The shaft body 3 is raised, the gears 5 and 7 are released from engagement, and the part A can be rotated by the shaft body 3.

Description

Detailed Description of the Invention (Industrial Field of Application) This invention involves transferring assembly parts sent on a conveyor onto a pedestal and performing operations such as screw tightening, welding, and riveting. This invention relates to an improvement in a transfer device for returning the work onto a conveyance device after completion of work.

[Conventional technology]

Conventional transfer equipment of this type uses a hand to grasp the assembly parts on the conveyor, bring it onto a pedestal, and place it on the pedestal.Once the assembly part has been placed on the pedestal, the hand is moved Remove the hand from the pedestal, then tighten the assembly parts on the pedestal using an automatic screw tightener, etc., and then move the hand onto the assembly part on the pedestal again after completing the work. , the assembly parts were grabbed with a hand and returned to the conveyor.

[Problem to be solved]

With conventional transfer equipment, the hand was temporarily retracted after placing the assembly parts on the pedestal, resulting in wasted time until the next transfer and adding one more work process. .

In addition, when the hand is retracted and the assembly parts are dropped onto the pedestal, if the parts on the pedestal are not positioned accurately or have shifted, tighten the screws. There was also a risk that work such as welding would not go well.

Therefore, the object of this invention is to shorten the working time by omitting the process of retracting the hand, and to provide a transfer device that can perform various tasks accurately.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention transfers assembly parts sent on a conveyor onto a pedestal and performs screw tightening work. In a transfer device for returning to the transport device after tightening work, etc., a shaft is attached to a freely movable traveling body so that it can move vertically and rotatably, and the lower end of the shaft can be opened and closed to grasp assembly parts. attaching a possible hand, and providing the shaft with two flanges with interlocking teeth,
One flange is fixed to the shaft body, and the other flange is rotatably attached to the shaft body, and the shaft body is moved either up or down.
By disengaging the teeth of the two flanges and rotating the shaft, the work area can be changed while the assembly parts are held in the hand.

(Function) The hand of the transfer device grasps the assembly parts that have been sent on the transport device and transfers them onto the pedestal, and at this time, the hand holds the assembly parts and transfers them to the assembly parts on the pedestal. For example, if you tighten a screw, then move the shaft either up or down to disengage the teeth of the two flanges and rotate the shaft, then change the work area while holding the assembly part with your hand. If you change the work location, perform the screw tightening work again on that surface. By repeating such operations, it is possible to perform operations on the necessary parts of the assembly parts while holding them with the hand.

(Embodiments) Preferred embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, a running body 2 that moves freely on a rail 1
A shaft 3 is attached to the shaft body 3 so as to be movable up and down and rotatable, a hand 4 for gripping the assembly part A is attached to the lower end of the shaft body 3, and two flanges each having teeth 5.7 that engage with each other are attached to the shaft body 3. 6.8, one flange 8 is fixed to the shaft body 3, and the other flange 6 is fixed to the upper surface of the traveling body 2 so as to be rotatable with respect to the shaft body 3. The upper end of the shaft 3 is attached to a drive part 9 (J) that moves the shaft 3 up and down as well as rotates it.
That's it. The conveyance device 10 is configured such that a pallet 12 is provided on a conveyor 11, and only the pallet 12 stops when the assembly part A reaches the location where it is to be transferred.

When the transport device i10 transports the assembly parts A to the location where they are to be transferred, the pallet 12 stops, and as the pallet 12 stops, the running f1 body 2 runs on the rail 1, and the hand 4
comes directly above the assembly part A and descends as the shaft body 3 descends. When the hand 4 opens and grasps the assembly part A, the shaft body 3 moves upward, and the traveling body 2 runs on the rail 1 and carries the assembly part A onto the pedestal 13. Here, the shaft body 3 descends again to place the assembly part A at a predetermined position on the pedestal 13 W1. At this time, the hand 4 is still gripping the assembly part A, and 6[i5.7 are engaged with each other. When the assembly part A has been transferred to the pedestal 13, the hand 4 does not retreat and remains in the grip state as in the conventional case.

The assembly parts A placed on the pedestal 13 and held by the hand 4 are screwed at predetermined locations by an automatic screw tightening machine 14. For example, when the assembly part A is an upper case and is screwed to the lower case/M (also an assembly part), the screws are tightened on each side. 3 is raised by the drive unit 9, and the shaft body 3 is raised @ two flanges 6.
When the teeth 5 and 7 of 8 are disengaged and rotated by a predetermined angle, the adjacent side faces are directed toward the automatic screw tightening machine 14. When the work on one work surface is completed, the shaft 3 is raised while holding the assembly part A and rotated by a predetermined angle, and work can be performed on the next work surface in sequence.

A stepped portion 41 is formed on the hand 4, and the lower end of the assembly part (upper case) A is positioned on this stepped portion 41. The upper case A is placed on the lower case (assembly parts) 8- while being sent by the transport device M10, and in this state the hand 4 grabs the whole part and places it on the pedestal 13 as shown in FIG. , the hand 4 remains on the pedestal 13 without being retracted. When tightening screws at a location where the hand 4 is located, a hole 42 large enough for the automatic screw tightening machine 14 to enter is formed in the hand 4, and the automatic screw tightening VA 14 is inserted into this hole 42. screw the screws 15 into the screw holes 16 and 17.

The order of work on the pedestal 13 is as shown in Fig. 4<a> to (e>).First, as shown in Fig. Then (b) ■ as shown in Fi4.

Tighten the screws at the location (■), then tighten the screws at the locations (■ to ■) sequentially, return the assembly part A to its original position as shown in the figure <e>, and then move it to the transport equipment @10.
Return the assembly parts A and A- for which the screw tightening work has been completed.

Reference numeral 18 in the drawings indicates a clamper, and the assembly parts A, A= are always held down and positioned from above by this clamper 18. This clamper is 18th
As shown in the figure, it is freely connected to the tip of a support shaft 19, and the support shaft 19 can move up and down with respect to the shaft body 3.

A spring 20 is provided between the lower end of the shaft body 3 and the clamper 18, and the clamper always applies a downward spring force.

FIG. 6 is a perspective view showing one of the pair of hands 4, showing the presence of a stepped portion 41 and a hole 42. As shown in FIG. The opening operation of the pair of hands 4 is performed by a drive section 21 shown in FIG.

In the embodiment described above, of the two flanges 638, the upper flange 8 is fixed to the shaft body 3, and the lower flange 6 is fixed to the upper surface of the traveling body 2.
This is not necessarily the only configuration; the lower flange 6 may be fixed to the shaft 3, and the upper flange 8 may be rotatably provided to the shaft 3 (its position in the vertical direction is immovable); in this case, This requires means for holding the upper flange 8 at a predetermined height so that it does not move up and down. Also,
Although the drive section 9 is provided at the upper end of the shaft body 3, it is of course possible to attach it to the side surface of the shaft body 3 via a bracket or the like. Further, in the illustrated embodiment, the running body 2 is configured to run on the rail 1, but the running body 2 may be attached to an arm of a robot or the like. Furthermore, it is also possible to move the traveling body 2 using a wire or the like. Furthermore,
In the embodiment, the screw tightening work has been described, but welding work, riveting work, etc. can also be performed.

Effect C] As explained above, according to the present invention, a shaft body is attached to a freely moving traveling body in a vertically movable and rotatable manner, and an openable/closable hand for grasping assembly parts is provided at the lower end of the shaft body. , two flanges with teeth that engage with each other are provided on the shaft, one flange is fixed to the shaft and the other flange is rotatably attached to the shaft, and the two flanges are attached by moving either the shaft up or down. By disengaging the teeth of the flange and rotating the shaft, the work area can be changed while the assembly parts are held in the hand. It used to be necessary to take a step to evacuate the building, but such a wasteful step is no longer necessary. Even if the assembly parts are grasped with the hand, the teeth of the flanges of the hand shaft will mesh with each other during work such as tightening screws, making it impossible to rotate. By moving up or down and rotating, the next work surface can be faced to an automatic screw tightening machine or the like. In addition, since the assembly parts on the pedestal are always held by the hand, there is no longer any fear that the assembly parts may be misaligned on the pedestal when transferred from the hand to the pedestal, as was the case in the past. Work is done accurately.

[Brief explanation of the drawing]

FIG. 7 is a schematic front view of a preferred embodiment of the present invention, showing a portion of the height, FIG. 2 is a schematic perspective view showing the overall groove formation, and FIG. 3 is a sectional view immediately before screw tightening work. Figure 4(a)~<
Fig. 5 is a cross-sectional view of the clamper, and Fig. 6 is a perspective view of the hand. 2... Traveling body, 3... Shaft body, 4... Hand, 5.7... Teeth, 6.8... Flange , 13... cradle. Applicant NEC Home Electronics Co., Ltd. Agent Patent Attorney Masu 1) Takeo Figure 4 Figure 2 Figure 3 Figure 4 ■ 6 Figures 6. Procedural principal formalities (method) % formula % 1. Display of the case 1986 Patent Application No. 188084 2, Invention Name Transfer Device 3, Relationship with the Amendment Case Patent Applicant Address 1-8-17 Umeda, Kita-ku, Osaka-shi, Osaka Name (193) NEC Home Electronics Co., Ltd. 4, Agent address: 2-10-5-5, Ginza, Chuo-ku, Tokyo 104
, Date of amendment order November 26, 1985 (shipment date) 6. Drawing 7 subject to amendment, contents of amendment Drawings 2 to 6 will be corrected as shown in the attached sheet. 2nd SA. Article 33 (d)'! s 4 Figure 5 (b) (c) (e) Diagram 6 Figure

Claims (1)

[Claims] 1. A transfer device for transferring assembly parts sent on a transport device onto a pedestal, performing screw tightening work, etc., and returning them to the transport device after the screw tightening work, etc. , a shaft is attached to a freely moving traveling body so that it can move vertically and rotatably, a hand that can be opened and closed for grasping assembly parts is attached to the lower end of the shaft, and the shaft is provided with teeth that engage with each other. Two flanges are provided, one flange is fixed to the shaft body, and the other flange is rotatably attached to the shaft body, and by moving either the shaft body up or down, the teeth of the two flanges are disengaged and the shaft body is rotated. A transfer device characterized in that it is configured such that the work location of the assembly parts can be changed while the assembly parts are held in a hand.