JPS6225280B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic assembly method for electronic equipment such as a magnetic recording/reproducing device.

2. Description of the Related Art Generally, products such as electronic devices have complex structures due to prioritization of performance, which is inconvenient for assembly and adjustment work. Therefore, in the past, each platen, on which the base etc. that make up this product were securely fixed, was transported by a conveyor line device such as a chain conveyor, stopped and positioned at the work position for assembly, adjustment, etc., and fixed to the platen. They were assembling parts onto the bases of manufactured products and performing work such as adjusting the products. However, such conventional assembly equipment for electronic devices, etc. requires a large number of platens and also requires the installation of a platen collection line, which has the drawback of making the equipment increasingly complex and expensive. was.

An object of the present invention is to eliminate the above-mentioned conventional drawbacks, and to construct a product in which when a substrate is integrally molded with a metal plate using a resin, both the protrusions guided by the guide means and the protrusions conveyed by the belt conveyor are made of the above-mentioned resin. Electronic devices, etc. that are designed to stabilize and directly transport the board to be transported, reduce the cost of the board, and also position and stabilize the work position with high precision so that work such as assembly or adjustment can be performed with high precision. The purpose of this invention is to provide an automatic assembly method.

That is, in order to achieve the above object, the present invention provides four protrusions that are fed from the front station, are integrally molded with a metal plate from a resin, and have at least four protrusions made of the resin on the periphery and protrude downward. Regarding the substrates having objects, two
The protrusions of the book are engaged with and guided by guide means installed extending from one end to the other on the table, and at least two protrusions of the board are arranged parallel to each other on the table. , and a stopper installed at an assembly position and configured to be able to be conveyed by contacting each of a pair of endless belt conveyors driven by a drive source, and to be able to move forward and backward into the conveyance path of the endless belt conveyors, The board is engaged with the board conveyed by the endless belt conveyor to stop the board at the assembly position, and then the board positioning member of the positioning means is protruded and engaged with the positioning portion of the stopped board, and the board is fixed. After positioning, the parts are assembled on the positioned board by the assembly means, and then the positioning is released and the parts are mounted on the board.
The protrusions of the book are engaged with and guided by the guide means, and two protrusions of the board are mounted in contact with each of the pair of endless belt conveyors to convey and discharge the board and send it to the next station. This is an automatic assembly method for electronic devices, etc. characterized by the following.

The present invention will be specifically described below based on embodiments shown in the drawings. FIG. 1 is a perspective view showing a magnetic tape automatic loading mechanism in a magnetic recording/reproducing apparatus according to the present invention, and FIG. 2 is a perspective view showing a magnetic tape transport mechanism in a magnetic recording/reproducing apparatus according to the present invention, similar to FIG. 1. Figure 3A is a plan view showing the board of the automatic magnetic tape loading mechanism;
FIG. 3B is a side view of FIG. 3A. That is, 1a
1 is a substrate of an automatic magnetic tape loading mechanism 2 that constitutes a magnetic recording and reproducing device, and is made of a rectangular rolled steel plate, and has a columnar shape integrally molded with the steel plate with resin outserts on at least four corners. A protrusion 82 is implanted so as to protrude downward. 1b is a substrate of a magnetic tape transport mechanism 3 constituting a magnetic recording/reproducing device, which is also made of a rectangular rolled steel plate, and has columnar protrusions formed integrally with the steel plate with resin outsert at the four corners. 83 and 84 are implanted so as to protrude upward and downward, and reel shafts 9a and 10a are implanted to form a take-up reel stand 9 and a supply reel stand 1, respectively.
0 is rotatably provided. The end of the base 1a of the magnetic tape automatic loading mechanism 2 and the end of the substrate 1b of the magnetic tape transport mechanism 3 are configured to be connected by a spigot. Reference numeral 11 denotes a guide base, which is mounted parallel to the substrate 1a by a support (not shown) on the substrate 1a. On the guide base 11 are tape guide pins 13 and 14, an erasing head 15, and a roller 1.
6, 17, audio control head 18,
Tape guide pins 19 and the like are installed. 21
is a capstan fixed to a flywheel 43 connected to a motor 80 via a belt, and the pinch roller 22 is rotatably supported on a pinch roller arm 23 rotatable with respect to a shaft 23a on the substrate 1a. ing. Reference numeral 12 denotes a rotary head cylinder around which a magnetic tape is wound, and which rotates at high speed by being connected to a motor (not shown) installed on the back side, and is rotatably supported at an angle with respect to the substrate 1a. A guide mount member (not shown) is formed on the guide base 11 to which guide mounts 25, 25' to which correction posts 26, 26' for guiding and regulating the magnetic tape and cylindrical guide bodies 27, 27' are attached are fastened. The recording medium is guided by arcuate grooves 11a and 11b, and its position is regulated by a locking member (not shown) during recording and reproduction. 78 is an arm provided with a tape guide pin 74 at one end, rotatable around a shaft 78a on the substrate 1b, and linked to playback/recording operations;
A spring 75 is biased between them, and one end of a strip member 76 wound approximately semicircularly around the supply reel stand 10 is rotatably supported by a pin 78b. Note that the other end of the band-shaped member 76 is fixed to the substrate 1b. A loading operation motor (not shown) is attached to the back side of the board 1a, and a worm gear (not shown) is engaged with a worm (not shown) attached to its output shaft, and the worm gear rotates. Accordingly, the magnetic tape is loaded by moving the guide members 40, 40' along the arcuate grooves 11a, 11b of the guide base 11. Reference numeral 85 denotes a pinch roller crimping mechanism that operates in response to power from the loading operation motor (not shown), and is composed of a large number of parts. 86 to 92 are push buttons for performing various operations.

In this way, products such as electronic devices, such as magnetic recording and reproducing devices, are composed of parts such as various operating members, various links, various arms, various rotating members, various springs, various belts, head assemblies, switching mechanisms, and balls. It is formed by attaching a steel plate to a board that is integrally molded with resin.

By the way, since high precision is required for the assembly and adjustment of such electronic devices, it is necessary to transport and stop the board (product) of the electronic device using a simple transport means for highly accurate positioning. It becomes necessary. That is, the substrate 1 is placed on a belt conveyor that is connected to an assembly base machine as shown in Fig. 4 to form an integrated line.
a or 1b, this board 1a or 1b
By transporting, stopping, and positioning with high precision, each work such as assembling each part, tightening screws, adjusting, etc. can be automated. Specifically, 10
1 is a base machine that constitutes each assembly station. 102 is a rectangular trapezoidal table forming each base machine 101. Reference numeral 103 is an endless conveyor belt that brings the tips of columnar protrusions 82, 83, or 84 implanted into the substrate 1a or 1b by molding into contact and generally conveys the substrate 1a or 1b by the friction thereof. , are suspended from pulleys 104 installed in notches at both ends of the table 102, and are arranged in parallel so as to move on grooves provided on the table 102. A motor 105 rotates the pulley 104 and is installed at the lower left side. Reference numeral 106 denotes two columnar molded resin protrusions 82 or 83 or 8 on the substrate 1a or 1b.
The guide rail guide means for guiding the table 102 is formed by arranging L-shaped plates in parallel above one conveyor belt 103, and is installed from the left end to the right end of the table 102. 107a and 107b are the end face of the substrate 1a or 1b, and the end face of the substrate 1a or 1b.
The board 1a or 1b, which has been conveyed by the conveyor belt 103, is engaged with the protrusion 82 or 83 or 84 of the table 102 as an assembly stopper to stop the substrate 1a or 1b at the assembly position. is set up. Reference numerals 108a and 108b are separation stoppers that stop the substrate 1a or 1b in front of the assembly position. Reference numerals 109a and 109b are buffer stoppers for temporarily stopping the substrate 1a or 1b instead of sending the substrate 1a or 1b to the next station all at once. These stoppers 107a, 1
A light receiving element 11 is placed on the left side of each of 08a and 109a.
0 are provided, and these stoppers 107b, 108
A light source 111 is provided on the left side of each of b and 109b, and the light receiving element 110 and the light source 111 are installed so as to face each other. However, when the product substrate 1a or 1b passes between the light source 111 and the light receiving element 110, which face each other, the light is blocked and this is detected, and a stopper installed in front of the conveyance is projected toward the conveyance path. The end portion or protrusion of the substrate 1a or 1b is brought into contact with this stopper to stop the substrate 1a or 1b. Then, after a predetermined period of time has elapsed since the right rear end of the substrate 1a or 1b deviates from the optical path between the light source 111 and the light receiving element 110, which face each other, and the light receiving element 110 detects the light from the light source 111, the conveyor belt 103 The motor 105 driving the cylinders 112a and 113a, which will be described later, is stopped.
I'm trying to get it to work. 114 is the substrate 1a
Alternatively, it is a pedestal that abuts both ends of one side parallel to the conveyance path of 1b, and is installed on the table 102 at the lower assembly position in FIG. 5. 112 is a wedge-shaped member 112b that is moved from a horizontal side in the direction of the arrow to engage with an expanded square-shaped groove 115 formed on the other side of the base 1a or 1b, and is pressed against the pedestal 114. A first positioning device for positioning includes a base 112c installed on the table 102, a guide shaft supported by the base 112c so as to be slidable in the horizontal direction, and a wedge-shaped member 112b attached to the tip. Moving member 112
d, and a cylinder 112a mounted on the base 112c with an output shaft connected to the moving member 112d.
and a switch 112e that detects the movement of the moving member 112d. 113 is a second positioning device that presses the other side of the substrate 1a or 1b to uniformly contact the substrate 1a or 1b with the pedestal 114 together with the first positioning device to eliminate rotational deviation; table 10
2 and the base 113c installed on the base 1
A movable member 113d that is slidably supported in the horizontal direction with a guide shaft at 13c and has a protruding member 113b attached to its tip, and the movable member 113d.
a cylinder 113a connected to the output shaft and mounted on the base 113c; and the moving member 113d.
The switch 113e detects the movement of the switch 113e.

As shown in FIG. 4, 116 is a substrate 1a to be a product.
Alternatively, it is a parts feeder that stores a large number of parts to be assembled in 1b, aligns the parts in series by vibration, and sequentially feeds them to a linear feeder or gravity chute 117. Reference numeral 118 moves and releases the claw that hooks and stops the leading end of the component that is moved straight by the vibration of the linear feeder or the component that is fed by the tilting force of gravity, and also releases the second component by applying, for example, spring pressure, etc. This is a separating section that positions the component 119 by pressing it against the reference wall (reference position) of the groove-shaped portion using the cylinder 120. 121 is part 1
19 is a switch that detects that it is positioned at the reference position. Reference numeral 122 is a pick-and-place unit that serves as an assembling machine, and positioning is performed by inserting a reference hole or a reference shaft formed in the part positioned by the separating section 118 into a pin or hole formed in the chuck. Attach a chuck 122a to the tip, which is attracted by electromagnetism or vacuum, or clamped by a claw mechanism, and is released at the assembly position of the part.
The chuck 122a is moved up and down by a predetermined amount by a cylinder 122b, and moved back and forth by a predetermined amount by a cylinder 122c to move along a gate-shaped trajectory, and is installed on the table 102. Reference numeral 123 denotes a control panel that controls each operation of the base machine 101 of each assembly station.
Each of these can be independently controlled, and if an abnormality occurs, the abnormality is displayed.

However, first, the motor 105 is driven by a command from the center, and together with the conveyor belt 103, a resin protrusion 8 is formed integrally with the conveyor belt 103 by outsert molding of resin onto a steel plate.
The substrate 1a or 1b mounted with the substrates 2, 83, or 84 in contact with each other is also moved and conveyed in the direction of the arrow while being guided by the guide rail 106. Then, after passing the separation stoppers 108a and 108b, a photoelectric detector installed there and constituted by a light source 111 and a light receiving element 110 detects the light.
Assembly stoppers 107a and 107b protrude into the conveyance path. Then, the board 1a or 1b comes into contact with the assembly stoppers 107a, 107b and is stopped. Then, the power to the drive motor 105 of the conveyance belt 103 is turned off and stopped, and the cylinders 112a and 11 of the first positioning device 112 and the second positioning device 113 are turned off.
3a is actuated, and the wedge-shaped member 11 is inserted into the widened cross-shaped groove 115 formed on the side surface of the substrate 1a or 1b.
2b mesh with each other to position the substrate 1 in the transport direction, and the wedge-shaped members 112d and 113d
By pressing a and 1b at two places and pressing them against the pedestal 114, the substrate 1a or 1b is positioned with high precision both in the direction perpendicular to the transport direction and in the rotational direction. In this way, the guide rail 10
6 and the protrusion 82 or 83 or 84 in a guided relationship to some extent to position the substrate in the direction perpendicular to the transport direction and in the rotational direction.

Furthermore, in the working position for assembly, adjustment, etc., the base plate 1a or 1, which is integrally formed with a steel plate and a resin outsert, is mounted on the cradle 114 as in the above embodiment.
It is positioned by pressing the side surface of the steel plate part b.

However, at this time, it is preferable that the positioning member be engaged with a positioning portion formed on the steel plate portion of the substrate 1a or 1b or a portion close to the steel plate (short protrusion portion).

Then, a positioning completion signal is issued from the switches 112e and 113e, and the pick-and-place unit 122 starts assembling the parts. Here, the flow of parts to be assembled will be explained. The parts are first stored in the parts feeder 116 and aligned in a certain direction. The aligned parts are chute 117
It will be transferred to and placed in place. The placed parts are separated into necessary pieces in the next separating section 118. The separated parts are moved to the assembly location by the pick-and-place unit 122 and assembled. That is, part 119
The switch 121 detects that the chuck 1 has reached the reference position of the separating section 122, and the chuck 122a of the pick-and-place unit 122 descends and the chuck 1
The pin or hole protruding from the part 22a is fitted into a reference hole drilled in the part 119 or a reference shaft formed, and held by electromagnetic or vacuum suction or clamping with claws, and then raised by the vertical cylinder 122b. Then, the chuck 122a of the pick-and-place unit picks up the substrate 1 on which the product is to be formed while chucking the part 119 by moving it forward using the front and rear cylinder 122c.
This means waiting for a or 1b to be sent to the assembly position. Detecting this, the switch 112e,
When the upper and lower cylinders 122b and 113e detect that the substrate 1a or 1b is positioned, the upper and lower cylinders 122b
is activated, the chuck 122a is lowered, and the chuck 122a is released at the lowest point, so that the parts to be assembled are assembled onto the board, and a product is formed. At this time, for example, the assembly part 119 is guided by the reference pin of the chuck or the reference shaft on the board and descends,
Assembled onto the product. At this time, whether the assembled parts are assembled in the correct position can be checked by using a photoelectric detection means attached to the tip of the chuck and consisting of, for example, a light source and a light receiving element, or a brush-like thing attached at a predetermined position. The assembly is completed when detected by an assembly completion switch consisting of a conductivity detection means, etc., which detects electrical continuity with the attached parts.

Next, when the assembly of parts to the board 1a or 1b by the assembly machine consisting of the pick and place unit 122 is completed in response to a signal from the assembly completion switch, an instruction is given to the cylinders 112d, 113a, and the moving members 112d, 113a are instructed. 113d is moved back to its original position to release the positioning, and the assembly stoppers 107a and 107b are moved back. Then, the motor 105 is driven to transport the substrates 1a or 1b one after another to the next station by the transport belt 103. Note that the separation stoppers 108a and 1
08b is installed so that the boards 1a or 1b do not enter the assembly position one after another. The above cycle is repeated to form the substrate 1a or 1b.
Assemble parts to. Incidentally, a sequence controller (not shown) is used to control these series of operations, and the control panel 123 that performs these control operations is located at each station (table).
The station is placed in a central location, allowing drive control to be performed from central control to independent control, regardless of the stations connected as a line. In addition, each assembly station (table) is provided with a manual space where workers can easily sit and work, and a space is created on the table 102 where a magazine containing a large number of assembly parts can be placed. are doing. Furthermore, a buffer stopper 1 is provided so that the substrate 1a or 1b can be stopped at this position.
09a and 109b are installed. Therefore, even if the assembly unit 122 breaks down, only the conveyor belt can be moved by operating the control panel 123, making it possible to assemble the parts manually.

In the above embodiment, a widening groove is formed on the side surface of the substrate 1a or 1b, and a wedge-shaped member is engaged with and pushed into the groove to position the substrate 1a or 1b. A wedge-shaped protrusion is formed on the side surface of the substrate 1a or 1b, and a positioning moving member having a groove at the tip of the protrusion is moved from the side to engage and push in the substrate 1a or 1b.
Even if the substrate 1a or 1b is positioned, a hole, a relatively short protrusion, or a protrusion with a hole is formed in the substrate 1a or 1b, and a positioning member is provided with a positioning pin that engages with the hole or a hole that engages with the outer shape of the protrusion. Even with positioning, the same effects as in the above embodiment can be obtained, and the present invention is not limited to the above embodiment.

As explained above, according to the present invention, it is possible to eliminate the conventional platen for conveying and positioning the product, and moreover, when outsert resin onto a metal plate and mold a board, the guide means can be used to guide the resin. ,
By forming the protrusions conveyed by the belt conveyor with the above-mentioned resin, we can reduce the cost of substrates and directly stabilize the substrates that will become products by simply arranging at least two endless belt conveyors with a simple mechanism. Furthermore, when performing assembly/adjustment work at the assembly position, the board will not fall over even if force is applied to it, allowing for stable and highly accurate assembly/adjustment.
This has the effect of enabling work such as adjustment.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an outline of a magnetic tape automatic loading mechanism of a magnetic recording/reproducing device which is an example of a product according to the present invention, and FIG. 2 is a perspective view showing an outline of a magnetic tape automatic loading mechanism of a magnetic recording/reproducing device which is an example of a product according to the present invention. 3A is a perspective view showing an outline of the magnetic transport mechanism to be formed; FIG. 3A is a plan view showing the substrate of the automatic magnetic tape loading mechanism shown in FIG. 1; FIG. 3B is a front view of FIG. 3A; The figure is a schematic perspective view showing an embodiment of the automatic assembly apparatus for electronic equipment, etc. of the present invention, and FIG.
FIG. 6 is a plan view showing the device for positioning the board at the assembly position in the device shown in the figure.
It is a sectional view taken along arrow A. 1a, 1b...Substrate, 2...Magnetic tape automatic loading mechanism, 3...Magnetic tape transport mechanism, 11...Guide base, 12...Rotating head cylinder, 43...Flywheel, 82,8
3,84... protrusion, 101... base machine,
102...Table, 103...Transport belt, 1
05... Motor, 107a, 107b... Assembly stopper, 114... Rest, 112... First positioning device, 113... Second positioning device,
115...Groove, 112b...Wedge-shaped member, 122
...Pick and place unit.

Claims (1)

[Claims] 1. Regarding the substrates that are fed from the front station, are integrally molded with a metal plate with resin, and have at least four protrusions made of the resin on the periphery and protrude downward, arranged in the transport direction. The protrusions of the book are engaged with and guided by guide means installed extending from one end to the other on the table, and at least two protrusions of the board are arranged parallel to each other on the table. , and a stopper installed at an assembly position and configured to be able to be conveyed by contacting each of a pair of endless belt conveyors driven by a drive source, and to be able to move forward and backward into the conveyance path of the endless belt conveyors, The board is engaged with the board conveyed by the endless belt conveyor to stop the board at the assembly position, and then the board positioning member of the positioning means is protruded and engaged with the positioning portion of the stopped board, and the board is fixed. After positioning, the parts are assembled on the positioned board by the assembly means, and then the positioning is released and the two protrusions of the board are engaged with and guided by the guide means, and the protrusions of the board are guided. An automatic assembly method for electronic equipment, etc., characterized in that two boards are mounted in contact with each of the pair of endless belt conveyors, and the boards are conveyed and discharged and sent to the next station.