JPH0738516B2 - Parts mounting device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a component mounting apparatus that suctions and transfers various components such as electronic components and mounts them on a mounted body such as a circuit board.

2. Description of the Related Art For example, as an electronic component mounting device, an electronic component is mounted on a board by sucking an electronic component with a suction nozzle at a component supply position, transferring it to a mounting position on a circuit board, and then releasing the suction. The ones that have been made are already known.

Further, as disclosed in JP-A-59-113699,
A mounting head is rotatably disposed on a moving body that moves so as to pass through a component supply position and a component mounting position, and a plurality of types of suction nozzles are disposed around the rotation axis of the mounting head for mounting. With the structure in which the rotating means is provided for rotating the head to cause the desired type of suction nozzle to participate in the component mounting, it is possible to deal with the case where the type of the component is changed by simply rotating the mounting head. It is also known that the above components can be efficiently mounted by a single component mounting device.

Problems to be Solved by the Invention However, in the case where each mounting head is provided with a plurality of types of suction nozzles as described above so as to be easily switched,
Since multiple suction nozzles are always protruding from each mounting head, the mounting head and suction nozzle must be configured so that the suction nozzle selected at the time of suction and mounting of the component can be further projected. There is a problem that the mounting head becomes large, and there is also a problem that a suction nozzle that does not suck a component interferes with a component recognition device, a component suction position correction device, and the like.

In addition, there is a problem that it is not possible to rotate the component around the axis of the suction nozzle when mounting the component to adjust the rotation posture when mounting the component, and when trying to configure the rotation posture to be adjustable, the suction nozzle can rotate. Moreover, it is necessary to provide a mechanism for supporting each suction nozzle so that it can be fixed at any rotation position, and there is a problem that the mounting head becomes larger.

In view of the above conventional problems, the present invention is as a first invention,
It is an object of the present invention to provide a component mounting apparatus which has a plurality of types of suction nozzles while having a compact structure and allows only selected suction nozzles to project and the other suction nozzles to be in a retracted state.

It is another object of the present invention to provide a component mounting apparatus that is capable of adjusting the component mounting posture by rotating the suction nozzle with a compact structure.

Means for Solving the Problems In order to achieve the above object, the first invention of the present invention is that a suction nozzle sucks a component at a component supply position, and after the suction nozzle is moved to a component mounting position, suction is released. In the component mounting apparatus configured to mount the component by rotating the rotary body, the rotary body is rotatably disposed in the cam cylinder having the grooved cam on the peripheral wall, and the rotary body projects and retracts in the axial direction around the rotary shaft center. A plurality of types of suction nozzles are arranged so that they can be inserted, an engagement member that engages with the groove cam is attached to each suction nozzle, and a rotation driving means for the rotating body is provided.

A second aspect of the present invention is such that a rotatable rotary shaft is provided, and a cam cylinder having a grooved cam on a peripheral wall and a rotary body rotatably arranged therein is used as the rotary shaft. Is mounted eccentrically with respect to the axis of the rotating shaft, and a plurality of types of suction nozzles are arranged on a pitch circle around the axis of rotation of the rotating body and passing through the axis of the rotating shaft. The rotary drive means and the rotary drive means of the rotating body are provided.

Action Since the present invention has the above-mentioned configuration, according to the first aspect, when the rotary body is rotated by the rotary drive means, each suction nozzle rotates, and the engaging member engages with the groove cam of the cam cylinder. Therefore, each suction nozzle sequentially moves in and out according to the shape of the groove cam, and only the desired suction nozzle is projected and the other suction nozzles are moved in the retracted state depending on the rotation position of the rotating body. can do. Therefore, when picking up and mounting components, the cam cylinder need only be moved up and down together with the rotary body that has a built-in suction nozzle, and it is not necessary to move up and down separately for each suction nozzle. The mounting head having the nozzle can be made compact.

According to the second invention, in addition to the first invention, the suction nozzle on the same axis can be rotated by rotating the rotary shaft, and the mounting component can be rotated to adjust the mounting posture thereof. it can.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

First, the overall configuration of the component mounting apparatus will be described with reference to FIG. 5. Reference numeral 1 denotes a support substrate on which the intermittent rotation drive device 2 is installed, and its rotation spindle 3 extends through the support substrate 1 and extends downward. ing. Reference numeral 4 denotes a support cylinder body fixed to the lower surface of the support substrate 1 so as to surround the rotary main shaft 3, and a bearing 4a arranged at the lower end.
The lower part of the rotating main shaft 3 is rotatably supported by.

A rotary frame 5 is fixed to the lower end of the rotary main shaft 3, and a plurality of mounting heads 10 are arranged on the outer peripheral part of the rotary frame 5 so as to be able to move up and down at an angle pitch corresponding to the indexing rotation angle of the intermittent rotation drive device 2. It is set up. Reference numeral 11 denotes a guide rod projecting upward from each mounting head 10 in pairs, and is supported by the rotating frame 5 so as to be vertically movable. Further, a cam follower 7 engaged with an ascending / descending groove cam 6 formed on the outer peripheral surface of the support cylinder 4 is attached to the upper end portion of the guide rod 11.

Stations such as a component supply station 8 and a component mounting station 9 are appropriately arranged at respective stop positions of the mounting heads 10 associated with the intermittent rotation of the rotary frame 5.

Thus, as the rotating frame 5 is intermittently rotated by the intermittent rotation drive device 2, the mounting head 10 sequentially moves through each station and the mounting head 10 is positioned at a height corresponding to each station. Although not shown, the component supply station 8 and the component mounting station 9 are configured so that the mounting head 10 can be lowered by a predetermined stroke in order to pick up and mount a component.

Next, the configuration of the mounting head 10 will be described with reference to FIGS. Reference numeral 12 is a support block that fixes the lower end of the guide rod 11, and a rotating shaft 15 via a pair of bearings 13a and 13b.
Is rotatably supported. A spacer 14 is interposed between the bearings 13a and 13b. The upper part of the rotary shaft 15 has a gear.
16 is fixed, and can be rotationally driven by a drive pinion 42 which is rotationally driven by a drive motor 41 at an appropriate station. A spacer 17 is interposed between the bearing 13b and the gear 16.

Reference numeral 18 is a lock piece for fixing the gear 16 at an arbitrary rotational position, and as shown in FIG. 2, it is urged toward the gear 16 by a spring 19 interposed between the gear 16 and the support block 12. It has a locking portion 18a.

At the lower end of the rotating shaft 15, a cam cylinder 20 having a cylindrical hole 21 formed eccentrically with respect to the axis of the rotating shaft 15 is fixed,
Inside the cylindrical hole 21, a rotary body 22 coaxially arranged is rotatably supported by a shaft 23 fixed to the lower surface of the rotary shaft 15. The rotating body 22 has a plurality of through holes 24 formed on a pitch circle passing through the axis of the rotating shaft 15, and each through hole 24
The suction nozzles 25 of different types are housed in each.

A gear 26 is formed on the outer periphery of the upper end portion of the rotating body 22, and can be rotationally driven by a drive pinion 44 which is rotationally driven by a drive motor 43 at an appropriate station. 27 is a locking lever for locking the rotary body 22 in a state where the desired suction nozzle 25 is located at the axial center position of the rotary shaft 15,
As shown in FIG. 3, one end thereof is supported by a pivot pin 28 and a spring 29 interposed between the other end and the cam cylinder 20 moves the rack portion 27a in the middle portion to the gear 26. The rack portion 27a can be separated from the gear 26 by the release pin 30.

An engaging pin 31 is provided on each of the suction nozzles 25 so as to project radially outward from the outer peripheral surface of the rotating body 22.
Is formed with a slit 32 through which the engaging pin 31 penetrates in the axial direction of the rotating body 22, and the tip end of the engaging pin 31 engages with the grooved cam 33 formed on the cam cylinder 20. ing. Thus, the suction nozzle 25 projects or retracts from the through hole 24 by the groove cam 33 as the rotary body 22 rotates. As shown in FIG. 4, the groove cam 33 has a suction nozzle 25 with a rotating shaft.
It is formed so that it is in a lowered position when it is located at the axial center position of 15 and is in an elevated position at other positions, so that the suction nozzle 25 projects at the axial center position of the rotating shaft 15 and retracts at other positions. Is configured.

A vertical groove 34 is continuously formed in the groove cam 33 so that the engaging pin 31 can be lifted when the suction nozzle 25 is located at the axial center position of the rotary shaft 15. The tip is
It is arranged so as to be able to move up and down in the cam barrel 20 and is configured to engage with the lower end portion of a slider 35 which is urged downward by a spring 36.

In the above configuration, when the mounting head 10 stops at the station where the drive pinion 44 is arranged, the release pin 30 is pressed as necessary to release the lock of the gear 26 by the lock lever 27 and the drive motor. 43 is driven to rotate. Then, the rotating body 22 is driven through the drive pinion 44 and the gear 26.
Is rotated, and accordingly, a plurality of types of suction nozzles 25 housed in each through hole 24 of the rotary body 22 are protruded downward when they sequentially reach the axial center position of the rotary shaft 15. When the desired suction nozzle 25 projects, the rotation of the drive motor 44 is stopped and the release pin
The pressing of 30 is released and the rotating body 22 stops.

In this state, the rotating frame 5 rotates intermittently and the mounting head 10 again
Is moved to reach the component supply station 8, the guide rod 11 is pushed down by a predetermined amount. At this time, when the tip of the suction nozzle 25 comes into contact with the component, the suction nozzle 25 rises while raising the slider 35 against the spring 36, and the repulsive force presses the tip of the suction nozzle 25 against the component.
Parts are securely adsorbed.

The mounting head 10 that has adsorbed the components moves again due to the intermittent rotation of the rotary frame 5. Mounting head at the station where the drive pinion 42 is located in front of the component mounting station 9.
When 10 stops, the lock piece 18 is pressed to release the lock of the gear 16 as necessary, and the drive motor 41 is rotationally driven to rotate the rotary shaft 15 via the drive pinion 42 and the gear 16.
Rotates, the suction nozzle 25 protruding through the cam cylinder 20 and the rotary body 22 rotates around its axis, and the rotational posture of the sucked component is adjusted. When the component has a desired rotational posture, the rotation of the drive motor 41 is stopped, the pressing of the lock piece 18 is released, and the rotary shaft 15 is stopped.

Then, the mounting head 10 is rotated by intermittent rotation of the rotary frame 5.
Is moved to the component mounting station 9, the guide rod
The component 11 is pushed down by a predetermined amount, the component is pressed against a mounting surface such as a circuit board, and the suction is released, so that the component is mounted.

By sequentially repeating the above-described operation by each mounting head 10 installed on the rotary frame 5, the components are sequentially sucked at the component supply station 8 by using the suction nozzle 25 of the optimum type, and the rotation posture of each component is determined. After adjustment, this component can be mounted at the component mounting station 9.

In the above-mentioned embodiment, the example in which the rotary shaft 15 is provided in order to adjust the rotational posture of the component is shown, but it can be omitted when the adjustment of the rotational posture of the component is unnecessary. Also,
Although an example in which the entire mounting head 10 is moved down by a predetermined amount at the time of sucking or mounting components is shown, the cam barrel 20 or the rotary shaft 15 may be mounted on the support block 12 so as to be capable of being lowered.

Further, in the above embodiment, the rotating body 22 is rotatably supported by the shaft 23, but the outer peripheral surface of the rotating body 22 may be rotatably supported by rollers or the like. Further, in the above embodiment, the suction nozzle 25 is the rotary shaft.
An example is shown in which the spring can be withdrawn against the spring 36 only when it protrudes at the axial center position of 15, but a spring is placed in each through hole 24 and all suction nozzles can be withdrawn. The protrusion may be biased.

Furthermore, although the mounting head 10 is installed on the rotating frame 5 that rotates intermittently in the above-described embodiment, the mounting head 10 can be applied to a component mounting device that moves along an arbitrary path such as linear reciprocating movement. Needless to say.

Advantageous Effects of Invention According to the component mounting apparatus of the first aspect of the present invention, when the rotary driving means rotates the rotating body having the suction nozzles built therein, the suction cams are sequentially retracted and retracted by the grooved cams of the cam cylinder. According to the rotation position of the rotating body, only the desired suction nozzle can be projected and the other suction nozzles can be set in the retracted state, and it is possible to easily switch from the plurality of types of suction nozzles to the optimum one. . Moreover, since only a single suction nozzle always projects at the same position, the movement space of the suction nozzle can be small, and even if peripheral devices such as component recognition are arranged close to each other, they do not interfere with the suction nozzle. The layout of each device can be easily designed and the device can be made compact. Further, when picking up and mounting parts, the cam cylinder need only be moved up and down together with the rotating body, and since it is not necessary to operate each suction nozzle, the suction nozzle can be downsized, and as a result, a mounting head having multiple types of suction nozzles. Can be made compact.

Further, according to the component mounting apparatus of the second invention of the present invention, it is possible to change the rotational posture of the component sucked by the suction nozzle by the rotation of the rotary shaft with a simple configuration in which the rotary shaft is added to the first invention. The effect is that the rotational postures of the components can be adjusted and mounted.

[Brief description of drawings]

The drawings show an embodiment of the present invention. Fig. 1 is a vertical sectional front view of a mounting head, Fig. 2 is a cross-sectional plan view taken along the line II-II of Fig. 1,
FIG. 3 is a cross-sectional plan view taken along the line III-III in FIG. 1, FIG. 4 is a development view of the grooved cam of the cam barrel, and FIG. 5 is a vertical sectional front view showing the overall schematic configuration of the component mounting apparatus. 5 …… Rotating frame 8 …… Component supply station 9 …… Component mounting station 10 …… Mounting head 15 …… Rotating shaft 16 …… Gear 20 …… Cam cylinder 22 …… Rotating body 25 …… Suction nozzle 26 …… Gear 31 …… Engagement pin 33 …… Groove cam 42 …… Drive pinion 44 …… Drive pinion.

Claims (3)

[Claims] 1. A component for adsorbing a component by a suction nozzle of a mounting head at a component supply position, moving the mounting head to a component mounting position, and then releasing the suction of the suction nozzle to mount the component. A mounting device, which has a cam cylinder having a grooved cam on its peripheral wall, a rotating body rotatably disposed in the cam cylinder, and a projecting / retracting device in the axial direction around the rotation axis of the rotating body. A plurality of types of suction nozzles and an engaging member that is attached to each of the plurality of types of suction nozzles and engages with the groove cam, and the groove cam is sucked by rotation of the rotating body. A vertical groove is continuously formed so that the engaging member can be raised when the nozzle is located at a desired position, and a tip end portion of the engaging member is arranged so as to be able to move up and down in the cam barrel. The spring urged downward by the urging means. A component mounting apparatus comprising: a mounting head configured to be engaged with a lower end portion of a rider; and a rotation driving unit of the rotating body. 2. A component for adsorbing a component by a suction nozzle of a mounting head at a component supply position, moving the mounting head to the component mounting position, and then releasing the suction of the suction nozzle to mount the component. A mounting device, which has a rotatable rotary shaft, a peripheral wall having a grooved cam, and a rotary body rotatably disposed therein, and the rotary shaft includes:
The cam cylinder mounted so that the shaft center of the rotating body is eccentric to the shaft center of the rotating shaft, and the shaft center on the pitch circle passing through the shaft center of the rotating shaft around the rotating shaft center of the rotating body. A plurality of types of suction nozzles that are capable of projecting and retracting in the direction and non-rotatably disposed, and a mounting head that is attached to each of the plurality of types of suction nozzles and that includes an engaging member that engages with the groove cam, A component mounting apparatus comprising: a rotation driving means for the rotating shaft; and a rotation driving means for the rotating body. 3. The groove cam is formed with a continuous vertical groove so that the engaging member can be raised when the suction nozzle is located at the axial center position of the rotating shaft due to the rotation of the rotating body, and the engaging member is provided with the vertical groove. A distal end portion of the member is arranged to be movable up and down in the cam barrel and is configured to engage with a lower end portion of a slider which is biased downward by a biasing means.
Item mounting device according to the item.