JPH10251741A - Heat treatment holding jig - Google Patents

Abstract

(57) [Summary] [Problem] It is possible to easily stand and hold a plurality of intermediate substrates without damaging them even when used for repeated heat treatment without damaging a plurality of intermediate substrates. SOLUTION: In a heat treatment holding jig 1 for holding a plurality of intermediate substrates upright so that they do not come into contact with each other, side plates 3 arranged in parallel at a required interval L and two plates connecting the side plates 3 each. A piece member 14 having four support rods 6 provided symmetrically and a predetermined number of substantially V-shaped grooves 15 for receiving and standing at four locations on one side of the semicircle of the intermediate substrate. The piece members 14 are arranged and fixed with a fixed gap d between adjacent piece members 14. Further, the intermediate substrate can be freely taken in and out upward.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jig for holding a disc to be heat-treated, which can be put in and taken out without damaging the disc to be heat-treated, and more particularly to a jig for processing an aluminum substrate for a magnetic disk. An intermediate substrate suitable for annealing an intermediate substrate (hereinafter, a processed disk between the punched substrate punched in a circle and the aluminum substrate is collectively referred to as an "intermediate substrate"). Related to a holding jig.

[0002]

2. Description of the Related Art An intermediate substrate to be processed into a disk to be heat-treated, for example, an aluminum substrate for a magnetic disk, is formed by punching a circle-shaped punched substrate having a required size from an aluminum plate, and then performing a strain removing heat treatment of the punching process, ie, annealing. Is applied. Next, after cutting both sides and the inner and outer circumferences, a strain relief annealing of the cutting is performed. Further, both sides are ground, and the strain relief annealing of the grinding is performed again. And after applying the groundwork,
A substrate is formed by Ni-P plating, and thereafter, a magnetic layer serving as an information medium is provided to form a magnetic disk.

Since the magnetic disk substrate is required to have a high degree of flatness, the substrate is usually subjected to strain relief annealing every time the intermediate substrate is machined as described above. This strain relief annealing is usually performed by heating and holding at about 200 to 350 ° C. × about 1 to 2 hours.

FIG. 6 is a perspective view of a heat treatment holding jig 100 used for annealing and annealing the intermediate substrate. By using the heat treatment holding jig 100, the distortion of the intermediate substrate is reduced. The strip annealing process is automated. The holding jig 100 for heat treatment holds a plurality of, for example, several tens of intermediate substrates in an upright position so as not to contact each other. Therefore, the slit grooves 101 are provided by the number of intermediate substrates to be processed, and the intermediate substrates are set in the slit grooves 101. Incidentally, the holding jig 100 for heat treatment is an integrally molded product of a heat-resistant resin by injection molding.

FIG. 7 is a perspective view showing a state where the intermediate substrate 110 is set on the holding jig 100 for heat treatment. The intermediate substrate 110 transported in the direction of the arrow 102 by the transport device (not shown) is transferred to the push-up jig 103.
The push-up jig 103 to which the intermediate substrate 110 has been delivered is
The intermediate substrate 110 is lowered in the direction of arrow 104 to set the intermediate substrate 110 at a predetermined position of the slit groove 101. One intermediate substrate 1
When 10 is set, the holding jig for heat treatment 100 is sent by one pitch in the direction of the arrow 105, and the next intermediate substrate 1
10 is set and repeated in the same manner as above.

[0006]

However, the holding jig for heat treatment 100 has a thick portion and a thin portion in order to impart strength and reduce the amount of resin used.
Residual stress occurs during injection molding. When this heat treatment holding jig 100 is used for repeated heat treatment, it is deformed and bowed, the slit groove for receiving the intermediate substrate is displaced from a proper position, and comes off when the intermediate substrate is set, or the intermediate substrates come into contact with each other. There is a risk of scratching or disturbing the process.

An object of the present invention is to be able to easily stand and hold a plurality of discs to be heat-treated without being deformed even when they are used for repeated heat treatment and without damaging a plurality of discs to be heat-treated.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a heat treatment holding jig, which is not formed as an integral product, but which divides a portion to be erected and received in a longitudinal direction into a plurality of pieces. It was found that when a gap was provided between the divided portions, the groove did not become a force for deforming the heat treatment holding jig itself, and that the position of the groove was not displaced enough to disturb the process, and the present invention was completed. It was done.

That is, the present invention provides a heat treatment holding jig for holding a plurality of discs to be heat-treated upright so that they do not come into contact with each other.
A connecting rod for connecting the side plates, and a receiving and holding member having a predetermined number of substantially V-shaped grooves that stand against the outer periphery of the heat-treated disk and inserted through the connecting rod; Means that a fixed gap is provided between the adjacent receiving and holding members, and is arranged and fixed to the connecting rod.

The side plates are arranged at required intervals by connecting rods. The receiving and holding member inserted into the connecting rod has a predetermined number of substantially V
Since it has the letter-shaped groove, the outer periphery of a predetermined number of discs to be heat-treated is received at a predetermined position. Further, by providing the receiving and holding member fixedly with a certain gap, the thermal expansion of the receiving and holding member received by the heat treatment is absorbed by the certain gap. By fixing the necessary number of the connecting rods, a plurality of heat-treated discs can be held upright. Therefore, even if the holding jig for heat treatment is used repeatedly for heat treatment, the holding jig hardly deforms, and the position of the groove does not shift so much as to disturb the process.

Further, in the holding jig for heat treatment, there are provided three connecting rods through which the receiving and holding members are inserted, and the receiving jig is supported by receiving three places on the outer periphery of a semicircle on one side of the disk to be heat-treated. In addition, the disk to be heat-treated can be freely taken in and out upward.

By providing three connecting rods through which the receiving and holding members are inserted, in addition to the function of the above-mentioned holding jig for heat treatment, the disk to be heat-treated is stably received at three locations on the outer periphery of a semicircle on one side. It can be leaned up and out freely.

Further, in the holding jig for heat treatment, the four connecting rods into which the receiving and holding members are inserted are provided two by two symmetrically, and the outer periphery 4 of a semicircle on one side of the heat-treated disk is provided. The heat-treated disk can be freely moved in and out while receiving the portion.

The four connecting rods into which the receiving and holding members are inserted are 2
By being provided symmetrically one by one, in addition to the function of the holding jig for heat treatment, the outer periphery of the semicircle on one side of the disk to be heat treated can be more stably received by four places, and can be taken in and out upward. You can do it freely.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a holding jig for heat treatment according to the present invention will be described below in detail with reference to the drawings.
In FIGS. 1 to 5, the same or equivalent parts are denoted by the same reference numerals.

In the holding jig for heat treatment according to the present embodiment, as described above, only the portion for receiving the intermediate substrate is formed of heat-resistant resin without being formed integrally with resin. In the case of being divided into a plurality of parts, and provided with a gap between them, the expansion amount of the portion receiving the intermediate substrate is absorbed by the gap, does not become a force for deformation of the heat treatment holding jig itself, The inventors have found that the position of the groove for receiving the intermediate substrate does not shift so much as to disturb the process.

FIG. 1 is a front view showing one embodiment of a holding jig for heat treatment according to the present invention, and FIG. 2 is a sectional view taken along the line II of FIG. The holding jig 1 for heat treatment according to the present embodiment holds a plurality of, for example, several tens of discs to be heat-treated, for example, intermediate substrates for processing into an aluminum substrate for a magnetic disk so as not to be in contact with each other. is there. That is, two side plates 3 arranged in parallel at a required interval L,
Four support rods 6 (support rods 6a to 6d to be described later are collectively referred to as "support rods 6") serving as connecting rods for connecting the two side plates 3 to each other, and The piece member 14 (the later-described piece member 14a
To 14d are collectively referred to as "piece member 14").
And

Further, as shown in FIG. 2, near the lower portion of the holding jig 1 for heat treatment, the lower side of the intermediate substrate 23 is received and supported, and the piece members 14a, 14b are symmetrically arranged.
And are inserted through the support rods 6a and 6b, respectively. An intermediate substrate 2 is provided near the middle of the holding jig 1 for heat treatment.
In addition to receiving and supporting the intermediate side of No. 3, there are provided piece members 14 c and 14 d symmetrically arranged, and are inserted through the support rods 6 c and 6 d, respectively. The distance between the intersection 21 of the horizontal line passing through the center of the piece members 14c and 14d and the center line of the holding jig 1 for heat treatment and the piece member 14a or the piece member 14b is determined by the distance between the intersection 21 and the piece member 14c or the piece member 14d. Is also slightly smaller.

Therefore, when the intermediate substrate 23 is set on the holding jig 1 for heat treatment, the outer peripheral two points 2
5 and 26 are bottoms 17 of the piece members 14a and 14b (FIG. 3).
(B)) or the outer peripheral two points 27 and 28 on the intermediate side of the intermediate substrate 23 are brought into contact with the inclined surface 15a of the substantially V-shaped groove.
4a, 14b, the inclined surface 15a of the substantially V-shaped groove (FIG. 3)
By contacting (B)), the intermediate substrate 23 is leaned against four outer peripheral locations 25 to 28 on one side of the semicircle.
Furthermore, the holding jig for heat treatment 1
The upper part is open so that it can be taken in and out freely.

As shown in FIG. 1, female screws are formed at both ends of the support rod 6 and the gripping rod 10, and the bolts 1 are attached to the side plates 3.
Fixed at 2. Reference numeral 11 indicates a guide rod.

FIG. 3 shows the support rod 6 and the piece member 14 of the holding jig 1 for heat treatment shown in FIGS.
FIG. 3B is an explanatory view of a main part in a state where the bridge member 14 is inserted into and fixed to the support rod 6.
As shown in FIG. 3 (A), the piece member 14 is provided with a through hole 16 for slidably passing through the support bar 6.
A fixing hole 7 for fixing the piece member 14 is formed in the support rod 6.
Is provided.

As shown in FIG. 3B, the piece member 14
A predetermined number of standing against the outer periphery of the intermediate substrate, in this case 6
It has a plurality of substantially V-shaped grooves 15 and has a shape in which, for example, a piece-shaped rotating body is continuously provided. Further, after the bridge member 14 is inserted into the support rod 6, the spring pin 1 is
9 is fixed through the fixing hole 18 of the bridge member and the fixing hole 7 of the support rod 6. Further, a fixed gap d is provided between adjacent piece members 14 inserted through the support rod 6 and fixed. The gap d depends on the material and length of the piece member 14,
Approximately 2 mm when the piece member 14 is made of heat-resistant resin and has a length of 60 mm
You can leave it open.

FIG. 4 shows a holding jig 1 for heat treatment shown in FIG.
It is a perspective view of a state where it is stored while being piled up and down. The side plate 3 of the holding jig for heat treatment is formed such that the width dimension b of the lower part 4 is slightly smaller than the width dimension B of the upper part, and is stacked as shown in this figure. In FIG. 4, the layers are stacked in two stages, but may be stacked in multiple stages as needed.

The heat treatment holding jig 1 according to the present embodiment having the above-described structure operates as follows. That is, the side plates 3 are arranged at the required intervals L by the support rods 6. Support rod 6
The piece member 14 inserted into the groove 15 has a predetermined number of substantially V-shaped grooves 15.
Therefore, the outer periphery of the predetermined number of intermediate substrates 23 is received at a predetermined position. Further, by providing the required number of the piece members 14 on the support rods 6, a plurality of intermediate substrates 23 can be held upright.

Further, a constant gap d between the pieces 14
And each piece member 14 is fixed to the support bar 6 by a spring pin 19 at the center, thereby providing
The support rod 6 and the bridge member 1 are repeatedly heated by annealing.
4 expands and contracts according to the respective expansion coefficients.
Since the slide member slides between the support member 6 and the through hole 16 of the bridge member 14, the support member 6 does not exert unnecessary force even if the bridge member 14 extends in the direction of the arrow 29 around the center. Further, the thermal expansion of the piece member 14 due to the repetition of the heat treatment is absorbed by the fixed gap d, so that the position of the groove does not largely shift or the adjacent piece members 14 do not interfere with each other. Therefore, the heat treatment holding jig 1 hardly bends and deforms even when used for repeated heat treatment.

Further, the four support rods 6 into which the bridge members 14 are inserted are provided symmetrically two by two, so that the outer periphery of the semicircle on one side of the intermediate substrate 23 can be more stably received and supported at four places. In addition, the intermediate substrate 23 can be freely taken in and out in the upward direction.

FIG. 5 is a perspective view showing another embodiment of the holding jig for heat treatment according to the present invention. The holding jig 1 for heat treatment according to this embodiment is provided with three support rods 6 through which the bridge member 14 is inserted, and the outer periphery 3 of a semicircle on one side of the intermediate substrate 23.
The intermediate substrate 23 can be freely moved in and out while receiving the portion and leaning against it.

By providing the three support rods 6 through which the piece members 14 are inserted, the intermediate substrate 23 can be stably received by three locations on one side of the outer circumference of the semicircle on one side, and can be freely moved upward and downward. is there. The holding jig 1 for heat treatment is not stored in an overlapping manner as shown in FIG. 4, but can be stacked by reducing the width of the lower part 4. A wide connecting member 13 is provided between the upper sides of the two side plates 3. The structure and operation of the other parts in FIG. 5 are the same as those shown in FIGS.

[0029]

According to the holding jig for heat treatment of the present invention, it does not deform even when it is used for repeated heat treatment, and can be easily held upright without damaging a plurality of discs to be heat-treated. I can do it.

[Brief description of the drawings]

FIG. 1 is a front view showing one embodiment of a holding jig for heat treatment according to the present invention.

FIG. 2 is a sectional view taken along line II of FIG. 1;

3A and 3B show a support rod and a piece member of the holding jig for heat treatment shown in FIGS. 1 and 2, wherein FIG. 3A is an explanatory view of inserting a piece member into the support rod, and FIG. It is principal part explanatory drawing of the state inserted and fixed.

FIG. 4 is a perspective view of a state in which the holding jig for heat treatment shown in FIGS.

FIG. 5 is a perspective view showing another embodiment of the holding jig for heat treatment according to the present invention.

FIG. 6 is a perspective view showing an example of a holding jig for heat treatment according to the related art.

FIG. 7 is a perspective view showing a state where an intermediate substrate is set on a holding jig for heat treatment.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 heat treatment holding jig 3 side plate 6, 6 a to 6 d support rod (connection rod) 14, 14 a to 14 d piece member (receiving / holding member) 15 substantially V-shaped groove 23 intermediate substrate (disk to be heat treated) 24 outer circumference L required Spacing d constant gap

Claims (3)

[Claims] 1. A heat treatment holding jig for holding a plurality of discs to be heat-treated upright so as not to contact each other,
Side plates arranged in parallel at a required interval, a connecting rod for connecting the side plates, and a predetermined number of substantially V-shaped grooves which stand against the outer periphery of the heat-treated disk are inserted through the connecting rod. A holding jig for heat treatment, wherein the holding jig is arranged and fixed to the connecting rod with a predetermined gap provided between adjacent receiving and holding members. 2. The disk according to claim 1, wherein three connecting rods into which the receiving and holding members are inserted are provided, and the connecting rod is supported against three places on one side of the semicircle on one side of the disk to be heat-treated and leans against the same. A holding jig for heat treatment, wherein the heat treatment disk can be freely taken in and out upward. 3. The heat-treating disk according to claim 1, wherein the four connecting rods, into which the receiving and holding members are inserted, are provided two by two in a symmetrical manner, and receive four locations on the outer periphery of a semicircle on one side of the disk to be heat-treated. A holding jig for heat treatment, wherein the holding jig is capable of being leaned against and allowing the disk to be heat-treated to be taken in and out upward.