JPS6144616B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a once-through fan assembly apparatus.

That is, as shown in FIG. 1, the once-through fan is constructed by inserting a number of blades 5 made of aluminum or the like into a number of grooves formed on the outer periphery of five metal disks 4a to 4e and fixing them therein. It is formed by

SUMMARY OF THE INVENTION An object of the present invention is to provide an assembly device for a once-through fan that allows a large number of blades to be automatically assembled onto a disk at once by smoothly separating, moving, and positioning the disks so as not to damage the blades. .

That is, in the present invention, blades are inserted into each of a large number of grooves formed on the outer periphery of each of a plurality of stacked disks to hold them so that they do not move, and the stepped shaft is moved to align with the axis of each disk. The shaft part of each stepped shaft is fitted into the formed hole, and each disc is separated by each stepped part, and in synchronization with the movement of the stepped shaft, the shaft part of each stepped shaft is inserted sequentially from the outer circumferential direction of the disc to separate each disc. Hold down to prevent each disk from tilting, and with the blade inserted into the groove on the outer periphery, position each disk parallel to each other at a predetermined interval, and swage between the blade and the groove of each disk to assemble the once-through fan. It is characterized by having the following configuration.

An embodiment of the present invention will be described below with reference to the drawings.

Figures 2 to 4 show an embodiment of the present invention, in which a pair of elongated holes parallel to the axis are formed in the outer peripheral surface so as to face each other across the axis. The chuck 1 fixed to the upper end of the cylinder 13 has a plurality of positioning pins 2 implanted in the chuck 1 fitted into positioning holes to guide the chuck 1, and an aluminum blade 5 for inserting and fixing the chuck 1. Five metal disks 4a, 4b, 4c, 4 with a plurality of grooves formed therein.
d and 4e are placed on top of each other. A hole whose diameter gradually decreases upward is formed in the axial center of each of these discs 4a to 4e, and the discs are stacked one on top of the other so that the diameter of the hole decreases upward from the chuck 1. A stepped shaft 3 is slidably built into the axial center of the cylinder 13. The stepped shaft 3 has five steps whose diameter gradually increases downward in correspondence with the disk. This stepped shaft 3 is slid back and forth in the axial direction of the cylinder 13 by a drive device (not shown), and the disks 4a to 4e are separated and positioned at the stepped portions. The stepped shaft 3 has a connecting arm 1 that slidably passes through the elongated hole of the cylinder 13.
2 is fixed, and stepped lifting shafts 6 are attached to both ends of the connecting arm 12, each forming a step relative to the disks 4a to 4d. This pulling shaft 6 has a plurality of lifting blocks 7 corresponding to each stage.
a, 7b, 7c, and 7d are slidably provided, and as the lifting shaft 6 rises, the lifting blocks 7a to 7d
are separated one by one by each stage of the pulling shaft 6 and raised one by one. Each lifting block 7
a to 7d are holding arms 10a, 10b, 10c, which are slidable toward the axes of the discs 4a to 4d, respectively;
10d. This holding arm 10a-1
A cam roller 8 is rotatably supported at one end of 0d. This cam roller 8 is in contact with a cam 9 installed parallel to the lifting shaft 6, and is connected to the lifting blocks 7a to 7a.
7d and the holding arms 10a to 10d, the stepped shaft 3
When the disks 4a to 4e are separated, the holding arm 1
0a to 10d are advanced so as to touch the upper end surfaces of the disks 4a to 4e, and when the stepped shaft 3 is lowered,
The holding arms 10a to 10d are moved back so as not to hit the chuck 1. Further, as shown in FIGS. 2 and 3, the lower surfaces of the distal ends of the holding arms 10a to 10d are provided with the disks 4a to 4e when they are inserted so as to face the upper surfaces of the respective outer peripheries of the disks 4a to 4e.
A leaf spring 15 is attached to press 4e downward.

In the above configuration, after the disks 4a to 4d are positioned using the positioning pins 2 and stacked on the chuck 1, a large number of blades 5 are inserted into the grooves of the disks 4a to 4e, and each blade 5 is moved. Keep it fixed so that it does not move. Then, when the stepped shaft 3 is raised in the direction of the arrow, the lifting shaft 6 is raised via the connecting arm 12 at the same time as the stepped shaft 3. When the disc 4a is separated at the first stage of the stepped shaft 3, the holding arm 10a of the lifting block 7a, which has been pulled up by the pulling shaft 6, is moved by the cam 9 to the center of the stepped shaft 3. The leaf spring 15, which is pushed out and attached to the lower surface of the holding arm 10a, comes into contact with the upper end surface of the disc 4a. Therefore, even if there is variation in the frictional force between the groove of the disk 4a and the blade 5, the holding arm 10a is in contact with the upper end surface of the disk 4a, so the disk 4a will not be tilted and the stepped shaft will not tilt. 3, and the disc 4a can be separated without galling between the groove of the disc 4a and the blade 5. Furthermore, when the stepped shaft 3 rises and attempts to separate the disk 4b at the second step of the stepped shaft 3, at the same time, the holding arm 10b of the lifting block 7b pulled up by the pulling shaft 6 The holding arm 10b is pushed out toward the axis of the stepped shaft 3 by the cam 9.
The leaf spring 15 contacts the upper end surface of the disk 4b. Thereafter, in the same manner as above, when the disc 4c is about to be separated by the stepped shaft 3, the leaf spring 15 of the holding arm 10c
is on the upper end surface of the disc 4c, and when the disc 4d is about to be separated by the stepped shaft 3, the holding arm 10d
The leaf springs 15 contact the upper end surfaces of the disks 4d, respectively, and suppress the inclination of the disks 4b to 4d. The disks 4a to 4d are then pushed up to predetermined positions by the stepped portions of the stepped shaft 3, and positioned at intervals formed by the stepped portions of the stepped shaft 3. Next, each disk 4
The grooves a to 4d and the blade 5 are tightened by a fitting device (not shown), and then the cross section of the blade 5 is cut by a cutter (not shown) to form the once-through fan shown in FIG. Finalize.

As explained above, the present invention provides a chuck for stacking and holding a plurality of disks each having a groove on the outer periphery into which a blade is inserted, and by sequentially moving each stepped portion, one end surface of the disks is lifted one by one. This is a once-through fan assembly device, which is equipped with a stepped shaft that separates the discs by the stepped shaft, and a means for pressing the other end surface of each disc separated by the stepped shaft to prevent the discs from tilting. Even if there are variations in the frictional force between the grooves and the blades, it is possible to separate and position the discs without tilting them, which prevents damage to the discs or the blades, and allows the discs to be smoothly arranged at a predetermined interval. A once-through fan can be manufactured continuously by inserting a large number of blades into grooves formed on the outer periphery at once and fixing them with screws.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a once-through fan according to the present invention, FIG. 2 is a perspective view showing a schematic configuration of an embodiment of the once-through fan manufacturing apparatus of the present invention, and FIG.
FIG. 4 is a front sectional view showing a state in which the disks are being separated in the apparatus shown in FIG. 2. FIG. Explanation of symbols 1...Chuck, 2...Positioning pin, 3...Stepped shaft, 6...Lifting shaft, 10a-1
0e...holding arm, 15...leaf spring.

Claims (1)

[Claims] 1. A plurality of disks each having a plurality of grooves on the outer periphery into which the blades fit and a hole of different diameters in the center are stacked and vertically stacked so that the diameter of the hole becomes gradually smaller as it goes upwards. a chuck for aligning and placing the blades fixedly held in the direction with positioning pins so that they can be inserted into the grooves of all the disks in advance;
The disc has shaft parts having shaft diameters corresponding to different diameters of the hole in stages, and moves vertically through the hole to sequentially bring the lower surface of the disc into contact with the shaft part. a stepped shaft for separating and positioning the stepped shafts; and a cam provided parallel to the moving direction of the stepped shaft, which moves in synchronization with the stepped shaft in a direction perpendicular to the moving direction, thereby separating the stepped shafts. and a holding means for sequentially holding down the upper surface of the blade,
The disks are positioned in parallel at predetermined intervals by the holding means and the stepped shaft, and the blades are crimped between the grooves of each disk to assemble the once-through fan. Once-through fan manufacturing equipment.