JPH0425097B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a novel method for supplying molded parts.
Specifically, it is possible to reduce the number of processes for arranging a plurality of molded parts in a predetermined positional relationship on one member, for example, within a housing, and also to reduce the size and cost of parts supply equipment. The present invention aims to provide a new method for supplying molded parts that has a number of excellent features, such as enabling high-speed automatic assembly.

BACKGROUND ART AND PROBLEMS The method shown in FIG. 1 is generally used to arrange a plurality of parts on one member in a predetermined positional relationship.

FIG. 1 shows a method of arranging required components in a predetermined positional relationship within a magnetic disk cassette.

Reference character a is an index table which is intermittently rotated in the direction shown by the arrow so as to stop at each position from 1 to 12. b is a lower case supplying machine, which supplies the lower case c onto the index table a. d is an upper case supplying machine, which supplies the upper case e so as to be stacked on the lower case c on the index table a. Then, between the lower casing supply position and the upper casing supply position, each part f1, f2, f3,
f4 and f5 are each feeder g1, g2, g3, g4
and g5 into the lower casing c.

In this way, in the conventional method of supplying molded parts, each required part f is supplied by each independent supply machine g.
Powered by. Therefore, a feeding machine is required for each required part, which requires a large space for the installation of the entire equipment, increases the price of the equipment itself, and also requires determining the orientation of each part. First, the feeding machine is complicated and expensive.Furthermore, since each feeding machine is compatible with each part having a different shape, it may be difficult to feed depending on the shape of the part, and feeding errors may occur. In addition, even if the shape of a part is slightly changed, the feeding machine for that part must be changed significantly, and there are various problems such as difficulty in responding to changes in parts.

Purpose of the Invention The present invention has been made in view of the above-mentioned problems with the conventional method of supplying molded parts. However, it is possible to reduce the number of processes, downsize and lower the cost of parts supply equipment, and even enable high-speed automatic assembly.
The purpose of the present invention is to provide a new method for supplying molded parts that has a number of excellent features.

Summary of the Invention In order to achieve the above-mentioned object, the method for supplying a molded part of the present invention groups at least some of a plurality of parts arranged in a predetermined positional relationship on one member into a set and at least The first component is integrally formed via a connecting portion so that the above relationship is approximately equal to the positional relationship, and the one component is separated from the connecting portion and simultaneously supplied and arranged on the member. .

Therefore, according to the method for supplying molded parts of the present invention,
Since a set of multiple parts is supplied by a single feeding machine, the number of feeding machines is greatly reduced, which makes the equipment space extremely small and the equipment cost extremely low. can,
In addition, if you arrange each part in the correct direction in advance, there is no need to decide the direction of the parts again, eliminating mistakes in supplying parts, improving the reliability of manufactured products, etc. It has the following effects.

EXAMPLES The details of the method for supplying molded parts of the present invention will be described below with reference to illustrated examples. In the illustrated embodiment, the method for supplying molded parts of the present invention is applied to a method for arranging and supplying required parts to the lower casing of a magnetic disk cassette.

First, before entering into a description of the method for supplying molded parts of the present invention, the relationship between the lower casing and each component placed therein will be described.

1 is a lower housing, and a cassette housing is formed by integrating an upper housing 2 and the lower housing 1 by ultrasonic welding or the like. Reference numeral 3 denotes a magnetic disk rotatably housed in a cassette housing, and a center core 4 is integrally attached to the center of the magnetic disk 3.
A drive hole 5 is formed in which a disk drive shaft of the magnetic recording/reproducing device is fitted. Center holes 6 and 7 are formed in the lower housing 1 and the upper housing 2, respectively, and the upper and lower parts of the center core 4 of the magnetic disk 3 are loosely fitted into these central holes 6 and 7, respectively. be done.

Further, windows 8 and 9 are formed at positions close to one side of the lower housing 1 and the upper housing 2, and the magnetic head of the magnetic recording/reproducing apparatus is connected to the magnetic disk 3 through these windows 8 and 9. be contacted. A shutter 10 is slidably attached to one side of the cassette case where windows 8 and 9 are formed, and when the magnetic disk cassette is not in use, the windows 8 and 9 are closed and the magnetic disk cassette is The windows 8 and 9 are opened when the device is installed in a magnetic recording/reproducing device.

In addition to the above-mentioned parts, various parts are arranged inside the cassette case, including a counter 11 and a counter stopper 1.
2. The arrangement of the release plate 13, shutter lock pawl 14, and mode selector 15 in the lower housing 1 will be explained using an example in which the present invention is applied.

The counter 11 is made of synthetic resin, and when a magnetic disk cassette is installed in a magnetic recording/reproducing device, it is rotated by a predetermined angle while one recording is performed in conjunction with a counter driver on the magnetic recording/reproducing device side. , annular protrusions 17, 17 (only one is shown) are integrally provided on both upper and lower surfaces of the disc-shaped main portion 16. Further, engagement teeth 1 are provided on the circumferential surface of the disc-shaped main portion 16 of the counter 10.
8, 18, . . . are formed. Receiving holes 19 and 20 having an inner diameter slightly larger than the outer diameter of the annular protrusions 17 and 17 of the counter 11 are formed near one corner of the lower housing 1 and the upper housing 2, The protrusions 17, 17 of the counter 11 are loosely fitted into these receiving holes 19, 20, and thereby the counter 11 is rotatably held in the cassette housing.

The counter stopper 12 is also made of synthetic resin, and has arm pieces 22, 22 extending from the center part 21 to both sides.
Elongated holes 23, 23 for attachment are formed at the tip. The long holes 23, 23 are connected to the lower housing 1.
It is loosely fitted onto the pins 24, 24 which are set upright. A wedge-shaped projection 25 is formed on the side surface of the central portion 21 facing the counter 11, and a trapezoidal cam portion 26 is protruded from the surface opposite to the surface on which the wedge-shaped projection 25 is formed. ing. and,
When this counter stopper 12 is supported by the lower housing 1 as described above, the wedge-shaped projection 2
5 is in a state away from the engaging teeth 18, 18, .
24 is located approximately midway between the elongated holes 23 and 23.

The release plate 13 is also made of synthetic resin, and the rectangular main part 27 has a substantially semicircular opening 28.
and long holes 29 are arranged in series along the longitudinal direction. Further, a locking pin 30 is provided protruding from the center of one end surface of the main portion 27.
An arm 31 extends from one side of the other end, and the tip of the arm 31 has a tapered surface. Thus, an arc-shaped protrusion 32 and a pin 33 are protruded from the lower housing 1, and the arc-shaped protrusion 31 is inserted into the semicircular opening 28 of the release plate 13.
The pin 33 is loosely inserted into the elongated hole 29, and the release plate 13 is guided by the arcuate protrusion 32 and the pin 33, and the tip of the arm 31 is separated from the cam portion 26 of the counter stopper 12. It is supported by the lower housing 1 so as to be able to slide between the position (the state shown in FIG. 3A) and the position where the cam portion 26 is pressed (the state shown in FIG. 3B). 34 is a coil spring, one end of which is attached to the release plate 1.
3, and the other end is fitted onto the locking pin 30 of the lower housing 1.
These two members 13 are fitted onto a locking pin 36 formed on a spring stopper 35 attached to the
and 35 in a compressed state.
Therefore, this coil spring 35 urges the release plate 13 to move toward the counter stop 12. Therefore, when the magnetic disk cassette is removed from the magnetic recording/reproducing apparatus, the release plate 13 is biased by the coil spring 34 and is in the state shown in FIG. It enters between the inner surface of the peripheral wall and the cam portion 26 of the counter stopper 12 and presses the center portion 21 of the counter stopper 12 toward the counter 11. By this pressing, the long holes 2 at both ends of the counter stopper 12
3 and 23 move relative to the pins 24 and 24, and the arm pieces 22 and 22 are bent, the central part 21 is displaced toward the counter 11, and the tip of the wedge-shaped projection 25 touches the main part of the counter 11. The rotation of the counter 11 is suppressed by engaging with the engagement teeth 18 on the circumferential surface of the counter.

37 is a circular insertion hole formed in the lower housing 11, and when the counter 11 is in the locked state, about two-thirds thereof overlaps the opening 28 of the release plate 13;
Approximately one-third of the remaining portion is shifted toward the spring stopper 34 side. When the magnetic disk cassette is inserted into the magnetic recording/reproducing device, the lock release pin provided on the magnetic recording/reproducing device is inserted into the cassette casing through the insertion hole 37 of the lower casing 1, and the opening of the release plate 13 is inserted into the cassette cassette. 28 and moves it toward the opposite side of the counter stopper 12 against the elastic force of the coil spring 34, thereby connecting the cam portion of the counter stopper 12 and the tip of the arm 31 of the release plate 13. disengage. Then, the force pressing down on the counter-wedge-shaped protrusion 25 side of the central portion 21 of the counter stopper 12 is removed, and the counter-stopper 12 is restored to its original state (the state shown in FIG. away from the engaged teeth.

The shutter lock pawl 14 is also made of synthetic resin, and has two engagement holes 39 and 40 formed in the base 38, and an elastic arm 41 extending from the base 38 in a substantially L-shape. The shutter lock pawl 14 is connected to an engagement hole 39 formed in the base 38,
It is attached to the lower housing 1 by engaging the pins 42 and 43 formed on the lower housing 1 with the pins 40 . A protrusion (not shown) provided on the shutter 10 is engaged with a recess 44 formed at the tip of the elastic arm 41, thereby locking the shutter 10 in the closed state.

The mode selector 15 is also made of synthetic resin. The mode selector 15 has an elastic arm 46 whose base is connected to one end of one side line of the rectangular main body 45.
are integrally provided along the one side edge at a slight distance, and an engaging protrusion 47 is formed on the outside of the tip of the elastic arm 46. The mode selector 15 is slidably mounted in a recess 48 provided including one of the corners of the lower housing 1. Further, the lower housing 1 has an opening 4 communicating with the recess 48.
9 is formed through which the mode selector 15 can be slid within the recess 48 . Reference numeral 50 denotes a wall provided to form the recess 48 in the lower housing 1, and engagement grooves 51, 51 are formed on the side surface of the recess 48 of the wall 50. Then, the mode selector 15
The engagement protrusion 47 of the elastic arm 46 slides between a first position and a second position within the wall 50 in each position.
1, the click stop is applied.

The mode selector 15 can be used as a state indicating mechanism for preventing accidental erasure, or as a recording mode indicating mechanism during field recording or frame recording in a magnetic still camera, or as a mechanism for indicating various modes. be.

The counter 11, counter stopper 12, release plate 13, and shutter lock pawl 14, which are the synthetic resin parts described above, are supplied into the lower housing 1 in the following manner.

52 is a parts block, which connects the counter 11 to the connecting frame 53 via connecting pieces 54, 54, .
Counter stopper 12, release plate 1
3 and a shutter lock pawl 14 are integrally formed, and the parts block 52 is fed singly or in a plurality connected together to a punching and loading device 55 by a parts feeder.

The punch loading device 55 is equipped with an arm 56 that is intermittently reciprocated in a direction perpendicular to the supply direction of the parts block 52 and is moved up and down. The arm 56 is provided with an intermediate head 57 and a loading head 58. A plurality of adsorption blocks 59 are provided in the intermediate head 57.
is formed in a hanging shape, and each adsorption block 5
A recess 60 is formed in the lower end surface of each of the recesses 9, 59, . 62,6
2,... are springs 63, 6 on the intermediate head 57.
3, . . . , and its lower surface protrudes in a slight direction from the lower end surfaces of the suction blocks 59, 59, .

Reference numeral 64 denotes a punching table provided in the punching loading device 55, and is positioned directly below the intermediate head 57 when the intermediate head 57 is at the parts block supplying position. The punching table 6
4 is equipped with a plurality of cutter blocks 65, 65, . . . which are movable up and down, and cutter blades 66, 66, . has been done. and,
The cutter blocks 65, 65, . . . are formed to be vertically movable relative to the punching table 64.

Then, the parts block 5 is placed on the punching table 64.
2 is supplied, the punch loading device 55
The arm 56 of is lowered to the position closest to you,
At the same time, the intermediate head 57 and loading head 58 are also lowered. Parts block 52
When the parts 11, 12, 13, and 14 are connected to the connecting frame 53, the connecting pieces 54, 54, . . . Each cutter blade 66,6
6. It is placed in a position corresponding to... Then, when the intermediate head 57 descends onto the punching table 64, the suction blocks 59, 59, . . .
13 and 14, and a presser 62,
62,... are the respective parts 11, 1 of the parts block 52 due to the elastic force of the springs 63, 63,...
2, 13, 14 and the connecting pieces 54, 54, . . . , the connecting frame 53 is pressed at multiple locations. Each presser 62, 62, . . . of the intermediate head 57
presses the connecting frame 53 of the parts block 52, the cutter blocks 65, 65, . . . are moved upward, and the cutter blades 6
6, 66, . . . cut the connecting pieces 54, 54, . separated from the connecting frame 53, and
Air passages 61 of suction blocks 59, 59, ...
The negative pressure in the recesses 60, 60, . . . generated by vacuum suction through the suction blocks 59, 61, . Then, the intermediate head 57 is raised with the parts 11, 12, 13, and 14 being sucked into its suction blocks 59, 59, . . . . Then, the cutter blocks 65, 65, . When the arm 56 is raised at this position, it is moved forward, and the intermediate head 57 is moved to a position directly above the intermediate stage 67.

The intermediate stage 67 includes a plurality of moving blocks 6.
8, 68, ... are provided. intermediate head 5
7 attracts each part, namely, the counter 11, counter stopper 12, release plate 13, and shutter lock pawl 14, and moves it to the intermediate stage 67.
When it reaches just above, the arm 56 is lowered and therefore the intermediate head 57 is lowered,
The lower end of each suction block 59, 59, . . . corresponds to the upper end surface of the moving block 68, 68, . Therefore, each adsorption block 59, 59,...
Parts 11, 12, 13 and 14 that are attracted to
are brought into contact with the upper end surfaces of the moving blocks 68, 68, . Therefore, the adsorption block 5
If suction through the air passages 61, 61, . . . 9, 59, . . . is stopped, each part 11, 12, 1
3 and 14 are separated from the suction blocks 59, 59, . . . and placed on the upper end surfaces of the moving blocks 68, 68, . The arm 56 is then raised, and therefore the intermediate head 57 is raised,
Further, the arm 56 is located on the front side, that is, the punching table 64
The intermediate head 57 is positioned directly above the punching table 64. During this time, the moving blocks 68, 68, .
2, 13 and 14 are moved to the final arrangement.

Each moving block 68, 68, . . . is shown in FIG.
When the punch is moved to the position shown by the dotted line, the arm 56 of the punch loading device 55 is lowered, and the loading head 58 is lowered together with the arm 56 of the punch loading device 55. The loading head 58 has
The suction blocks 69, 6 are arranged in a positional relationship corresponding to the position of each moving block 68, 68, .
9,... are provided, and each adsorption block 69
A recess 70 is formed in the lower end surface of the recess 70, and the recess 70 is connected to a vacuum suction mechanism (not shown) via an air passage 71.

When the loading head 58 is lowered and its suction blocks 69, 69, . By vacuum suction through the air passages 71, 71, . . . , the suction blocks 69, 69, .
Negative pressure is generated at 70, . . . , and the parts 11, 12, 13 and 14 placed on the moving blocks 68, 68, . It is adsorbed to.
At the same time, as described above, on the punching table 64, the parts 11, 12, 13, and 14 are separated from the communication frame 53, and then suctioned to the suction blocks 59, 59, . . . . It will be done.

Each part 1 to suction block 69, 69,...
After the parts 1, 12, 13, and 14 have been suctioned, the arm 56 is raised, and the loading head 58 is pulled upward while holding the parts 11, 12, 13, and 14.

Arm 56 is then moved forward to position loading head 58 directly above assembly stage 72. At this time, the intermediate head 57 is positioned directly above the intermediate stage 67.

On the assembly stage 72, each part 11, 12,
The lower casing 1 to which 13 and 14 are assembled has been supplied in a predetermined orientation, and this assembly stage 7
Once the loading head 58 is positioned directly above the assembly stage 72, the arm 56 is then lowered, and the loading head 58 is then lowered toward the assembly stage 72. When the loading head 58 is in its lowest position, the parts 11, 12, 13, and 14 suctioned to the lower end surface of the loading head 58 are moved to the respective suction blocks 69, 69, .
is positioned at a predetermined location on the lower casing 1 on the assembly stage 72. Each part 11, 12, 1
3 and 14 are positioned at predetermined positions in the lower housing 1, suction through the air passages 71, 71, . . . of the suction blocks 69, 69, . . . is stopped, and therefore, Each component, namely the counter 11, counter stopper 12, release plate 13, and shutter lock pawl 14, is attached to the suction blocks 69, 69, . . . of the loading head 58.
away from the lower end surface of. And each part 11,1
2, 13 and 14 are adsorption blocks 69, 69,...
..., the loading head 58 is pulled upward. Note that this loading head 58 is lowered and each part 11, 12, 13 and 1
4 is assembled into the lower housing 1 and raised, at the same time, the intermediate head 57
The operations of lowering the parts 11, 12, 13 and 14, placing the parts 11, 12, 13 and 14 on the moving blocks 68, 68, . . . and raising them are performed simultaneously.

The loading head 58, which has been pulled upward after separating the parts 11, 12, 13, and 14, is moved to a position directly above the intermediate stage 67 as the arm 56 moves toward the front, and is then moved onto the intermediate stage 67. Forced to descend. The moving blocks 68, 68, . . . of the intermediate stage 67 are moved to a predetermined position (the position indicated by the two-dot chain line in FIG. 7) with each of the parts 11, 12, 13, and 14 placed thereon. There is.

As described above, the intermediate head 57
is moved between the punching table 64 and the intermediate stage 67, and the parts 11, 12, 13 and 14 separated from the communication frame 53 on the punching table 64 are transferred to the moving blocks 68, 68, . . . of the intermediate stage 67. and the loading head 58 is moved between the intermediate stage 67 and the assembly stage 72,
Moving blocks 68, 68, . . . of the intermediate stage 67
...The parts 11, 12, 13, and 14, which were positioned in the predetermined arrangement relationship above, are assembled into the lower housing 1 supplied on the assembly stage 72 while maintaining the same positional relationship. The steps are performed continuously.

Incidentally, when assembling the parts using the loading head 58, not only the simple arrangement of the parts but also other appropriate steps may be performed at the same time. That is, for example, in the above example, when the release plate 13 is placed at a predetermined position in the lower housing 1, the pin 33 formed in the lower housing 1 is activated by the heater provided in the loading head 58. The release plate 13 is prevented from falling off by thermally caulking the head of the release plate 13.

According to the method for supplying molded parts according to the present invention as described above, parts 11, 12,
Since the supply to the lower casing 1 of 13 and 14 is performed by one punch loading device, the number of punch loading devices serving as feeders can be reduced, and the equipment space can be made extremely small. , equipment costs can be made extremely low. Furthermore, each part 11, 12,
By integrally forming the parts 13 and 14 in the same direction as in the assembled state, there is no need to detect the directionality of each part and determine its orientation, and the process is simplified. This simplifies the process and prevents feeding errors such as feeding in the wrong direction, making it possible to automatically assemble manufactured products.Also, even if the shape of each part changes, the feeding form can be changed. It has many advantages such as being unnecessary.

Note that the lower housing 1 to which the above-mentioned parts 11, 12, 13, and 14 are assembled is further supplied with other parts, such as a magnetic disk 3, and the upper housing 2, the shutter 10, etc. are assembled to create a magnetic disc. Although it is assumed to be a disk cassette, the details thereof are not directly related to the present invention and will not be described.

FIG. 10 shows various modifications of the parts block 52.

Effects of the Invention As is clear from the above description, the method for supplying molded parts of the present invention is capable of supplying at least some of a plurality of parts arranged in a predetermined positional relationship on one member into a set. The parts are integrally formed via a connecting part so that at least the directional relationship is substantially equal to the positional relationship, and the one part is separated from the connecting part and simultaneously supplied and arranged on the member. Features.

Therefore, it is possible to reduce the number of steps required to arrange a plurality of molded parts in a predetermined positional relationship on one member, for example, within a housing, and also to downsize and lower the cost of parts supply equipment. It has many excellent features such as enabling high-speed automatic assembly.

[Brief explanation of drawings]

Fig. 1 is a plan view showing an example of a conventional molded parts supply method, Figs. 2 to 5 show an example of a magnetic disk cassette, and Fig. 2 shows some parts omitted. 3 to 5 are plan views of the main parts with the upper casing removed, and FIGS. 6 to 9 show an example of the implementation of the method for supplying molded parts of the present invention. 6 is a layout diagram of an example of an apparatus for carrying out the method of the present invention, FIG. 7 is a plan view showing the flow of parts, FIGS. 8 to 9 are schematic sectional views of main parts, and FIG. FIG. 10 is a plan view showing a modification of the manner in which the molded parts are connected. Explanation of symbols, 1...One member, 11, 12, 1
3, 14... Parts, 53... Connecting portion.

Claims (1)

[Claims] 1. At least some of the plurality of parts arranged in a predetermined positional relationship on one member are integrated as a set through a connecting part so that at least the directional relationship is approximately equal to the above-mentioned positional relationship. A method for supplying a molded part, characterized in that the one part is separated from the connecting part and simultaneously supplied and arranged on the member.