JPS6177397A - Transmission mechanism of driving force - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is directed to, for example, a mounting head for electronic components that absorbs electronic components supplied from a tape feeder and attaches them to a printed circuit board. The present invention relates to an improvement in a driving force transmission mechanism that can be incorporated into an automatic mounting machine for electronic components as a driving mechanism for performing the above operations.

Conventional technology Automatic mounting machines for electronic components are equipped with multiple mounting heads around the circumference of a machine frame that rotates with a rotor, and each mounting head individually picks up electronic components from multiple tape feeders arranged radially. After receiving the mounting head, there is a structure in which a plurality of mounting heads are individually made to make various movements, such as mounting the mounting head on the printed circuit board after undergoing processes such as missing item detection and direction rotation.

Conventionally, as a drive mechanism for this type of mounting head, an air cylinder or the like is installed individually, and the operation of the cylinder is controlled by a solenoid valve.

Problems to be Solved by the Invention However, if the drive mechanism is a combination of a solenoid valve and an air cylinder, as described above, if there are many moving parts, an extremely large number of moving parts will be required, leading to high costs. Since disadvantageous conditions include air leakage and slow driving speed, it is difficult to accurately perform the desired operation.

Means for Solving the Problems In the driving force transmission mechanism according to the present invention, a hammer solenoid that operates in response to an electrical command is interposed between the drive source and the driven mechanism section, and the solenoid is activated. The drive source is configured to transmit power from the drive source to the driven mechanism via a protruding pin.

Function: This drive force transmission mechanism is mechanically simple and inexpensive because it only incorporates a hammer solenoid, and it is accurate and reliable because the hammer solenoid responds at a high speed without causing air leaks. The driven mechanism can now be operated.

Embodiments will now be described with reference to the accompanying drawings.

This drive force transmission mechanism is constructed using a hammer solenoid IO operated by an electrical command, and the drive motor 2
The device is incorporated into an automatic mounting machine that attaches electronic components to a printed circuit board P by causing the mounting head 30 to perform predetermined operations using the drive source. The mounting head 30 extracts and suctions electronic components from the tape feeder 40, mounts the electronic components on the printed circuit board P, and furthermore, when correcting the mounting direction of the electronic components using the direction turning device 50, the mounting head 30 moves from a predetermined position to the F.
A hammer solenoid l is used as a mechanism to transmit the power of the drive motor 20 to each of these mechanical parts.
O is incorporated. Pieces 41, 51, and 61 that receive and fit the solenoid pin 11 protruding from the hammer solenoid 10 are attached to each of the driven mechanism parts, and only when these pieces fit together, the mounting head 30 is moved downwardly.
It is now possible to Further, each of the driven mechanisms has a drive motor 20 as a common drive source, and the connection relationship is shown by a dashed-dotted line in FIGS. 2 to 4. ), the driving force is transmitted through the rotating shafts 7l, 21a, 21b, and 21c connected to the drive motor 20.

Each rotating shaft 21a, 21b, 21c has
Cam discs 22a, 22b, 22c corresponding to each mechanism part
, 22d have worn bearings. Operating rods 24a, 24'b are connected to these cam discs via cam followers 23a, 23b, 23c, 23d.

24c, and a hammer solenoid 10 is attached to the lower end of each operating rod.

With this driving force transmission mechanism, when an electronic component is picked up, the hammer solenoid 10 receives an activation command and the twist/id pin moves to the piece 4.
1, the hammer solenoid 10 descends along the cam groove of the cam disk 22a, and the mounting head 30
descends downward. With this downward movement, the mounting head 30 sucks the electronic component from the tape feeder 40 to the nozzle tip,
Furthermore, the hammer solenoid 10 is fixed in the cam groove of the cam disc 22a, moves upward, and returns to its original position, and the pin of the hammer solenoid 10 retreats, thereby stopping at a predetermined position. In addition, in the direction turning device 50, the cam disk 22b, the cam 2 orer 2
3b, and can also be applied to the downward movement performed via the cam disc 22C and cam follower 23c when discharging missing electronic components. When mounting the electronic component, it can be moved downward by releasing the latching lever 62 using the hammer solenoid 10. Furthermore, the hammer solenoid 10 can be configured to cause the tape feeder 40 to perform an intermittent tape feeding operation. The hammer solenoid 10 is attached to the end of an operating rod 25, and can be moved up and down by linking the operating rod 25 to a cam 91126 mounted on the axis of the rotating shaft 21b via a cam follower 27. The hammer solenoid 10 has 6 pieces.
1 are arranged so that they can be held together, and this piece 61 is a cam lever 3 attached to the same axis of the feed drum 31 for the electronic component holding tape.
It is arranged so as to be in contact with 2. When the piece 61 moves up and down, the feed drum 31 can be rotated one pitch at a time via the cam lever 32. The hammer solenoid 10 can also be configured to switch a vacuum valve that supplies vacuum pressure for sucking electronic components to the mounting head 30.

Effects of the Invention As described above, according to the driving force transmission mechanism according to the present invention, since the driving force can be transmitted to the driven mechanism using the hammer solenoid, it can be mechanically constructed in the front vehicle at a low cost. Moreover, since the hammer solenoid has a fast response speed to commands, the driven mechanism can be configured to operate accurately at a predetermined timing.

[Brief explanation of the drawing]

FIG. 1 is an explanatory view showing a driving force transmission mechanism according to the present invention, and FIGS. 2 to 4 are explanatory views when the same transmission mechanism is incorporated into an automatic mounting machine for electronic components. IO: hammer solenoid, ll: solenoid pin, 2
0: Drive source, 30: Driven mechanism section, 41°51.61: Piece. e-PC'J

Claims (1)

[Claims] A hammer solenoid that operates in response to an electrical command is interposed between the drive source and the driven mechanism, and the power of the drive source can be transmitted to the driven mechanism via a pin that protrudes when the solenoid is activated. A driving force transmission mechanism characterized by the following.