JPH01159880A - Positioning device for plate spring member - Google Patents

Abstract

PURPOSE:To stop a plate spring member in prescribed position and attitude and to execute an automatic assembly by mounting the plate spring member by means of a stopper in a lengthwise direction and on a carrying base in a thickness direction, locating it, and projecting the side part from the carrying base in a fixed width. CONSTITUTION:A guiding groove 12a, with which a folding part is engaged, is formed along the carrying direction on the upper surface of a carrying base 12, a topper 13, with which the front edge of a plate spring member 10 collides, is provided at the downstream edge of the carrying base 12, and a guiding member 14 is provided at the upstream side upper side of the carrying base at an interval larger than the thickness of the plate spring member 10. An upper opening window 11 is formed between the downstream edge of the guiding member 14 and the stopper 13, and the side periphery of the plate spring member 10 is projected from the side surface of the carrying base 12 in the position of the opening window 11. Consequently, the attitude of the plate spring member 10 at the time of stopping is made horizontal and uniform in the lengthwise direction, the member is stopped in the prescribed position, and further, the projecting part is sandwiched by a chuck 20, and the member can be removed from the carrying base 12 in an upper direction. Thus, the automatic assembly of the plate spring 10 to a center core can be executed.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a method for assembling a leaf spring member to a center core of a magnetic disk, particularly a floppy disk, for chucking the center core to a drive shaft of a recording/reproducing device. The present invention relates to a device for positioning the leaf spring member.

[Conventional technology]

In recent years, floppy disks have also been used as image recording media for still cameras and the like. In this case, in order to rotate the magnetic recording medium within the cartridge,
The drive shaft of the recording/reproducing device and the center core are fitted together.

With respect to this center core, as shown in the exploded perspective view of FIG.
A magnetic recording sheet 3 is fixed to the outer upper adhesive surface 1c via a double-sided adhesive ring 2 which has an adhesive on both sides and has a through hole 2a formed therein, and further attaches the protrusion 1b and the presser member. 4, so that when the drive shaft fits into the insertion hole 1a and rotates, the magnetic recording medium 3 rotates.

In this case, in order to tightly fit the center core 1 onto the drive shaft, a leaf spring member 10 shown in FIG. Pressure ensures stable rotation of the center core.

Since the center core of this leaf spring member is extremely thin and small, it is difficult to assemble it automatically, so it has been manually assembled using tweezers or the like.

[Problem that the invention seeks to solve]

However, manual assembly has poor production efficiency, and automation of assembly has been desired.

SUMMARY OF THE INVENTION Therefore, the main object of the present invention is to provide a positioning device that can stop a leaf spring member at a predetermined position and posture for automatic assembly.

[Means for solving problems]

The above object is a device for positioning a leaf spring member having a bent portion perpendicular to a plane along the longitudinal direction in order to assemble the leaf spring member into a slit of a center core of a magnetic recording disk; A stopper having a guide groove in which the bent portion engages formed in the upper surface of the conveying platform that supports the spring member substantially horizontally along the conveying direction, and the front end of the leaf spring member collides with the downstream end of the conveying platform. A guide member is provided above the upstream side of the conveyance table with a gap greater than the thickness of the leaf spring member, and an upper opening window longer than the length of the leaf spring member is provided between the downstream end of the guide member and the collision surface of the stopper. This is achieved by forming a position such that at least the side edge of the leaf spring member at this opening center position protrudes laterally from the side surface of the conveyor table.

[For production]

Since the leaf spring member moves along the gap with the guide member and the bent portion of the leaf spring member moves along the guide groove of the horizontal conveyance table, its posture when stopped is horizontal and aligned in the longitudinal direction. Also, since it has a stopper, it stops at a predetermined position. When the leaf spring member stops, since it has an upward opening window between it and the guide member, and the side edge of the leaf spring member protrudes from the side of the conveyor table, the protruding part is gripped by the chuck and transported upward. It can be taken out from the table.

In this way, the leaf spring member can be positioned at a predetermined position,
In addition, since the leaf spring member can be stopped in a desirable posture for taking out, automatic assembly of the leaf spring member to the center core becomes possible.

〔Example〕

The present invention will be explained in more detail below with reference to embodiments shown in the drawings.

Figure 1 is a plan view, with a vibrating parts feeder (not shown)
The leaf spring member 10 fed out in a connected state flows from the right to the left, and at the upper opening window 11 position, the upper and lower side ends of the leaf spring member 10 are pinched by chucks 20, 20, and taken out. .

The conveyor table 12 connected to the parts feeder has a bent portion 10a of the leaf spring member 10 along the conveyance direction (left-right direction).
A guide groove 12a is formed in which the guide groove 12a is engaged. Transport platform 1
A stopper 13 is provided at the downstream end of 2. Additionally, there is a space above the upstream side of the conveyor table 12 that is larger than the thickness of the leaf spring member.
Upper guides 14 are arranged at intervals smaller than the number of sheets,
Between the stopper 13 and the upper guide 14 is the above-mentioned upper opening window 11.

The guide groove 12a is formed near the side surface 12b of the conveyor table 12, so that the guide groove 12a has a bent portion 10a.
When engaged, the side edge of the leaf spring member 10 protrudes from the side surface 12b. Therefore, chucking is performed at this protrusion.

Thus, there are two
The sheets are held in a row without overlapping, and the bent portion 10a
The leaf spring member 10, which is engaged with the guide groove 12a and fed in the direction of the arrow in FIG. 1, collides with the stopper 13 and is positioned and stopped within the upper opening window 11. After that, chucking by the chuck 20.20 is performed.

Now, referring also to FIGS. 2 and 3, the chuck 2
0.20 is held by a holder 21, which is engaged with an output shaft 24 of a rotary motor 23 attached to the head 22.

The head 22 is attached to the tip of the rod 25 of the transverse cylinder, and moves the leaf spring member 10 from its stop position to the position where it is assembled to the center core 1.

It is also designed to move in the vertical direction in FIG.

According to the apparatus configured in this manner, the leaf spring member 10 that has stopped against the stopper 11 is moved to the chuck 20.
20, the holder 21 rises and the leaf spring member 10 is taken out.

Thereafter, the rod 25 is extended to advance the holder 21 onto the center core l. Next, the rotary motor 23 is started, and the holder 21 is rotated 90 degrees so that the bent portion 10a of the leaf spring member 10 is placed at the bottom. Thereafter, the head 22 is lowered, the leaf spring member 10 is inserted into the slit ld, and the chucks 20 and 20 are opened to perform assembly. Subsequently, the holder 21 rotates in the opposite direction and retreats,
Return to original position.

〔Effect of the invention〕

As described above, according to the present invention, the leaf spring member is positioned by the stopper in the longitudinal direction and placed on the conveyor table in the thickness direction, so that it is accurately positioned and can be easily assembled into the slit of the center core. Important positional accuracy in both longitudinal and thickness directions is ensured. In addition, since the side portions are made to protrude from the conveyor table by a certain width, the assembling to the center core can be correctly grasped by the chuck of the device, and the assembling does not result in mistakes. In addition, productivity is significantly improved compared to the manual method.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a positioning device according to the present invention, FIG. 2 is a front view, FIG. 3 is a perspective view of a leaf spring member in a moving state, and FIG. 4 is an exploded perspective view of a main part of a magnetic disk. 1... Center core, 1d... Pickpocket, 10.
...Plate spring member, 10a...Bending portion, 11...Upper opening window, 12...Transportation platform, 12a...Guide groove, 1
3... Stopper, 14... Upper guide (guide member), 20... Chuck, 21... Holder, 23
...rotating motor

Claims (1)

[Claims] (1) A device for positioning a leaf spring member having a bent portion perpendicular to a plane along the longitudinal direction in order to assemble the leaf spring member into a slit of a center core of a magnetic recording disk; A guide groove is formed along the conveying direction on the upper surface of the conveying platform that supports the conveying table substantially horizontally, and the bent portion engages with the guide groove, and a stopper with which the front end of the leaf spring member collides is provided at the downstream end of the conveying table. , a guide member is provided above the upstream side of the conveyance platform at a distance larger than the thickness of the leaf spring member, and an upper opening window longer than the length of the leaf spring member is formed between the downstream end of the guide member and the collision surface of the stopper. A positioning device for a leaf spring member, characterized in that the side edge of the leaf spring member at least at this opening window position projects laterally from the side surface of the conveyor table.