JPH0341515Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an electronic component automatic insertion device for assembling various electronic components into circuit boards on an electronic circuit board production line.

(Prior Art) Electronic components to be mounted on an electronic circuit board generally have various shapes, and multiple legs (lead wires) of the electronic component are inserted into multiple holes provided in the circuit board. Since there are various postures at the time of assembly, automatic assembly equipment such as an assembly robot, which is highly versatile and has excellent controllability, is required to automatically assemble various parts onto the board.

Additionally, since a large number of electronic components are attached to a board, in order to improve the production efficiency of the manufacturing process, the board assembly line should be equipped with an arm equipped with a mounting head that holds various electronic components and inserts them into the board. , it becomes necessary to provide a plurality of assembly robots each including a drive device that drives the arm and a control device that controls the operation of the drive device.

However, equipping a plurality of such assembly robots not only increases equipment costs, but also increases the size of the entire assembly line.

Conventionally, therefore, electronic circuit boards have been assembled using an electronic component automatic insertion device (for example, Panasert U manufactured by Matsushita Electric Industrial Co., Ltd.) as shown in FIG.

This device includes a positioning device 1 that drives a support block 14 serving as an output section in the X-axis direction and the Y-axis direction that are orthogonal to each other within a horizontal plane. It is connected to the air cylinder devices 3, 30 and motors 2, 2 to be able to reciprocate in the Z-axis direction (vertical direction), and is arranged to be rotatable around the Z-axis in order to match the orientation of the parts with respect to the board. There is.

Air cylinder devices 3, 30 serving as reciprocating devices are disposed on the support block 14 for each of the main shafts 4, 40. In the air cylinder devices 3, 30, an outer cylinder portion is rotatably supported by a support block 14, and an actuator portion, which is reciprocated by air pressure, is integrally attached to the head of the main shaft 4, 40. Note that the outer cylinder part and the actuator part are engaged with each other so that relative rotation between them is impossible, and when the outer cylinder part rotates, the actuator part and the main shaft also rotate together.

Further, the support block 14 is provided with control motors 2, 2 serving as rotating devices for each of the main shafts 4, 40, and the output shafts of the motors 2, 2 are connected to a timing belt 2, respectively.
0, 20, the air cylinder device 3
It is connected to driven pulleys 21 and 22 that are integrally attached to the head of the outer cylinder portion of Nos. 0 and 30.

Therefore, each main shaft 4, 40 is connected to the control motor 2,
2 and air cylinder devices 3 and 30,
They are each independently driven to reciprocate and to rotate.

At the tip of each main shaft 4, 40, there is a mounting head 5, which can hold and release various electronic components 8, 80.
50 is equipped.

the positioning device 1, the air cylinder device 3,
30, motors 2, 2, and mounting heads 5, 50 are each connected to a control device (not shown) and their operations are controlled.

In order to supply a plurality of types of electronic components 8, 80 to the electronic component automatic insertion device, a plurality of parts feeders 6, 6 are used, for example, as shown in the figure, which sequentially feed the components toward component supply ports 60, 60.

The board 9 before the electronic components are installed is transported by the transport device 7 to a predetermined position below the electronic component automatic insertion device and positioned.

At the same time, the positioning device 1 operates according to a command from the control device to move the plurality of heads 5, 5.
0 to parts supply ports 60, 6 of parts feeders 6, 6
Move it above 0. Next, the air cylinder devices 3, 30 are operated to lower both the main shafts 4, 40, and the mounting heads 5, 50 are operated to hold the electronic components 8, 80. Thereafter, the air cylinder devices 3, 30 operate again, and the mounting heads 5, 50
lift upwards.

The positioning device 1 operates to move both the main shafts 4, 40 and the mounting heads 5, 50 to the standby position above the substrate 9. First, the first main shaft 4 is positioned directly above the hole into which the first electronic component 8 held is to be inserted, and at the same time, the motor 2 installed on the main shaft 4 is moved to a predetermined position according to a command from the control device. By rotating by an angle, the main shaft 4 and thus the electronic component 8 are changed to a predetermined posture set in advance according to the orientation of the insertion hole of the board 9.

Next, the first air cylinder device 3 installed on the main shaft 4 is operated to lower the main shaft 4 and insert the legs of the electronic component 8 to be held into the holes in the board 9.

When the insertion of the electronic component 8 is completed, the air cylinder device 3 operates to raise the main shaft 4 to the original standby position.

Next, the positioning device 1 operates according to a command from the control device, and the second main shaft 40
After the electronic component 80 is positioned directly above the insertion position on the board 9, the motor 2 and the second air cylinder device 30 installed on the main shaft 40 operate to assemble the second electronic component 80. is carried out in the same manner as above.

When all the electronic components 8, 80 held by the plurality of main shafts 4, 40 have been assembled, the positioning device 1 operates to move the support block 14 again to the component supply port 6 of the parts feeder 6, 6.
0.60, parts feeder 6,
Proceed to assembling the next part supplied by 6.

Since the electronic component automatic insertion device described above uses a single positioning device 1 to drive a plurality of main shafts 4 and 40 holding electronic components 8 and 80, respectively, it is not necessary to provide a positioning device for each main shaft. This is not necessary and the device can be made compact. Therefore, according to the electronic component automatic insertion device, compared to the case where multiple robots are installed on an assembly line,
The entire assembly line can be downsized.

(Means for Solving the Problem) However, in the electronic component automatic insertion device described above, a plurality of motors 2, 20 are mounted on the support block 14.
As a result, the weight of the movable parts including the main shafts 4 and 40 becomes large, and it becomes necessary to add great strength to the structure of the positioning device 1. As a result, there still arises the problem that the entire device becomes large. was. Furthermore, the problem of increased equipment costs due to the provision of a plurality of motors 2, 20 remains.

(Means for Solving the Problem) Conventionally, each spindle 4, 40 has to be held and set its posture according to multiple types of parts having different shapes and mounting postures. However, the applicant realized that this was wasteful in terms of the device configuration, and completed the present invention.

The electronic component automatic insertion device of the present invention uses one rotating device in common to drive a plurality of main shafts 4, 40, and the rotating device is connected to each main shaft 4, 40 via a power transmission mechanism. .

(Function) The electronic components 8, 80 are supplied to the mounting heads 5, 50 of the respective spindles 4, 40 in the same manner as in the conventional device, for example.

The positioning device 1 operates, and first the first spindle 4
is positioned directly above the hole into which the first electronic component 8 to be held is to be inserted, and at the same time, the rotating device is rotated by a predetermined angle according to a command from the control device,
The main shaft 4 and thus the electronic component 8 are set in a predetermined posture according to the direction of the insertion hole formed in the board 9.

At this time, the other main shafts including the second main shaft 40 are also
The other main shafts, including the second main shaft 40, remain in a standby position above the substrate and are unrelated to the progress of the process.

Next, the reciprocating device equipped on the first main shaft 4 operates to lower the main shaft 4 and insert the legs of the electronic component 8 into the holes in the board 9.

When the insertion of the electronic component 8 is completed, the reciprocating device operates to raise the main shaft 4 to the original standby position.

Next, the second spindle held by the second main shaft 40
The electronic component 80 is assembled to the substrate 9 in the same manner as the first electronic component 8. At this time, as the second main shaft 40 rotates, the first main shaft 4 also rotates, but this has no relation to the progress of the process.

When the assembly of all the electronic components 8, 80 held by the plurality of main shafts 4, 40 is completed, the positioning device 1 operates to supply the components to each mounting head 5, 50 again. The installation continues.

The time (cycle time) required for assembling the electronic components 8, 80 held by all the mounting heads 5, 50 onto the board 9 is the same as that of the conventional device.

(Effect of the invention) In the electronic component automatic insertion device of the invention, only one motor 2 is required to be installed in the output section of the positioning device 1, so the weight of the movable parts including the main shafts 4 and 40 is reduced. It turns out. As a result, positioning device 1
It becomes possible to downsize the motor, and by reducing the number of motors installed, the device becomes cheaper and equipment costs can be reduced.

(Embodiment) FIG. 1 shows an embodiment of the electronic component automatic insertion device of the present invention, and the conventional electronic component insertion device shown in FIG. The configuration is similar to that of the electronic component automatic insertion device.

In the illustrated embodiment, for the sake of simplicity, the number of component mounting heads is two, but in reality, four or more heads are mounted on the support block in order to improve the efficiency of the assembly process. It will be equipped on the 14th.

In the positioning device 1, a carriage 15 is provided on a base 18 fixed near the conveyance line 7 so as to be slidable in the X-axis direction, and a screw shaft 12 pivotally supported on the base 18 is attached to the carriage 15. Screw them together and tighten the screw shaft 12.
It is rotationally driven by a DC servo motor 10.
Further, the reciprocating table 15 is provided with an arm 16 equipped with a slider 17 at the base end and a support block 14 at the distal end so as to be slidable in the Y-axis direction on the slider 17. Spiral shaft 1
3 onto the slider 17, and the screw shaft 13
It is rotationally driven by a DC servo motor 11.

The support block 14 is equipped with one DC servo motor 2, and the output shaft of the motor 2 is composed of a timing belt 20 and driven pulleys 21, 22 mounted on the heads of the respective main shafts 4, 40. It is connected to each main shaft 4, 40 via a power transmission mechanism.

A well-known clinch mechanism (not shown) is installed below the electronic component automatic insertion device for bending the legs of the electronic component inserted into the board 9 and fixing the electronic component to the board 9.

Since the connection state of each spindle 4, 40 and head 5, 50 is exactly the same, one spindle 40 and head 5
Only the connected state of 0 will be explained.

As shown in FIG. 2, the main shaft 40 also serves as a piston rod for the cylinder device 30 attached to the support block 14, and has a piston 41 approximately in the center thereof, passing through a cylinder 42.

The driven pulley 22 is attached to the upper end of the main shaft 40 so that it rotates integrally but can freely slide, and a head 50 is provided at the lower end.

The head 50 is a cylinder 4 fixed to the main shaft 40.
A pair of link plates 46, 46 are pivotally supported from 4 to the tip of a piston rod 45.

Support arms 47, 47 of the cylinder 44 are provided to protrude downward, and a pair of chuck pieces 4 are provided at the tips of both arms.
Supports 8,48.

The upper ends of both chuck pieces 48, 48 are pivotally connected to the link plates 46, 46, and the piston rod 45
The electronic component 80 is attached and detached by opening and closing the lower ends of the chuck pieces 48 and 48 by vertical movement of the chuck pieces 48 and 48, respectively.

Reference numerals 31 and 32 in the drawings indicate position detectors for detecting the top dead center and bottom dead center of the main shaft 40.

As the moder 2 rotates by a predetermined angle in response to a command from a control device (not shown), the plurality of main shafts 4 and 40 are rotated at an angle θ corresponding to the mounting posture of the electronic component to be mounted. The object rotates by a certain amount, and is maintained in that position.

At this time, the other main shafts also rotate at the same time, but since these main shafts are reset to their respective predetermined postures immediately before the component insertion operation, there is no problem with the progress of the process.

After the air cylinder device 3 or 30 operates and the electronic component held by the mounting heads 5, 50 is inserted into the board, the electronic component is fixed to the board 9 by operating the clinch device. be done.

The operation of the electronic component automatic insertion device is not limited to the example described above, but can be set arbitrarily by modifying the program ported to the control device. For example, parts can be supplied to each spindle 4, 40. It is also possible to perform operations and insert operations into the board 9.

According to the electronic component automatic insertion device, the assembly cycle time of all electronic components held by the plurality of mounting heads is maintained the same as before.
By reducing the number of spindle drive motors to one, the device can be made smaller and lighter.

Note that the configuration of each part of the present invention is not limited to the above embodiments.
Of course, various modifications are possible within the technical scope of the claims of the utility model registration.

For example, as a parts supply unit, it is possible to use not only a parts feeder method but also a taping method in which a large number of parts are taped together and gradually fed out.

Furthermore, various well-known systems can be used as the positioning device 1, and a robot arm may also be used.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an electronic component automatic insertion device according to the present invention, FIG. 2 is a sectional view of a mounting head, and FIG. 3 is a perspective view of a conventional electronic component automatic insertion device. 1...Positioning device, 2...Motor, 3,30
...Air cylinder device, 4,40...Main shaft,
5, 50... Mounting head, 9... Board.

Claims (1)

[Scope of utility model registration request] A support block 14 is provided at the output part of the positioning device 1 in the X-axis direction and the Y-axis direction, which are orthogonal to each other, and the support block 14 has a plurality of main shafts extending in the Z-axis direction, which is orthogonal to the X-axis and the Y-axis. 4,40
are mounted so that they can be reciprocated in the Z-axis direction and rotated around the Z-axis, and each main shaft 4, 40 is
A reciprocating drive device for driving in the axial direction is provided independently for each main shaft, and mounting heads 5, 50 are provided at the tips of the main shafts 4, 40, respectively, for holding and releasing electronic components.
and by the operation of the positioning device 1,
An arbitrary main shaft is positioned in the X-axis direction and the Y-axis direction, and the main shaft is rotated around the Z-axis to adjust the orientation of the mounting heads 5, 50, and the reciprocating drive device is used to position the mounting heads 5, 50. In an electronic component automatic insertion device that moves a main shaft in the Z-axis direction and inserts a plurality of legs of an electronic component held in the mounting head into a hole in an electronic circuit board, the support block 1
4 is provided with one motor 2, and each of the plurality of main shafts 4, 40 is provided with a driven part for rotation around the Z axis, and the motor 2 and the plurality of main shafts 4, 40 are connected The driving parts are connected to each other via a power transmission mechanism, and are driven by the motor 2 to move the parts in the Z-axis direction for inserting electronic components.
An electronic component automatic insertion device characterized in that a book main shaft and another main shaft rotate at the same time.