JPH02190281A - Article mounting mechanism for mounting and demounting mechanism - Google Patents

Abstract

PURPOSE:To prevent the damage of a mounting mechanism and a mounting device body during over load operation by a method wherein a rotary cylinder body provided on an outer peripheral surface with a cam groove for guiding the lock member of a grasping mechanism rotatably and slidably mounted to a body is mounted to a mounting and demounting mechanism. CONSTITUTION:A grasping mechanism rotatably mounted to a body. When a load is applied on a claw body 13 of a grasping mechanism, a compression spring 4 is compressed, and a lock pin 7 is about to rise upward as it is guide by the cam groove of a cylinder body 6. As a result, a rotation force is generated at the rotary cylinder 6 and the grasping mechanism is disengaged. This constitution enables prevention of the damage of the grasping mechanism and a mounting device body.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an article mounting mechanism equipped with an attachment/detachment mechanism, and relates to an article mounting mechanism equipped with an attachment/detachment mechanism used, for example, in an electronic component mounting apparatus.

[Prior Art] Conventionally, as the type of electronic components to be mounted by an electronic component mounting apparatus is changed, a mechanism consisting of a mounting mechanism (head) and a gripping mechanism (clincher) has been changed. The mounting mechanism is replaced with a mounting mechanism that is compatible with electronic components by attaching and detaching them to the main body of the device.

When attaching or detaching the gripping mechanism, remove the screws that attach the gripping mechanism to the main body, remove the unnecessary gripping mechanism, align the new gripping mechanism by fitting the key, etc. A method of screwing the mounting mechanism is adopted.

[Problems to be Solved by the Invention] However, since the above-mentioned conventional methods were used, ■When there is a change in the type of target product (electronic component), it takes time to set up the work of attaching and detaching the gripping mechanism. There was a problem that it took too long.

In addition, ■Since the gripping mechanism is fixed to the mounting mechanism body with screws, etc., if an overload is applied due to some kind of malfunction during the mounting operation, the gripping mechanism, mounting mechanism, and even the mounting device body may be damaged. There was a problem with giving.

Therefore, the mounting mechanism of the present invention, which is equipped with a mechanism for attaching and detaching the mounting mechanism, has been developed in view of the above-mentioned problems. It is an object of the present invention to provide a mechanism for attaching and detaching a mounting mechanism that does not damage the mounting mechanism and the main body of an article mounting apparatus even if an overload is applied due to some kind of malfunction during operation.

[Means and operations for solving the problems] In order to solve the above-mentioned problems and achieve the objects, the attachment/detachment mechanism of the mounting mechanism of the present invention has the following configuration. That is, an article mounting mechanism including a detachment mechanism that is attached to an article mounting apparatus,
It includes a cylindrical main body that is driven relative to the article mounting device, and a gripping mechanism that is detachable from the main body via an attachment/detachment mechanism, and the attachment/detachment mechanism rotates and slides with respect to the main body. a rotating cylindrical body that is freely movable and has a cam groove formed on its outer peripheral surface for guiding a locking member provided on the gripping mechanism; and a biasing means provided between the gripping mechanism and the main body. The gripping mechanism is rotated to be attached to and removed from the main body, and when an overload is applied to the gripping mechanism, the rotating cylinder rotates.

[Example] Hereinafter, an example will be described in detail with reference to the drawings. 1st
The figure is a front view, with main parts broken, of a structure in which the mounting mechanism and the detachment mechanism are integrated.

In this figure, the main body 100 integrally formed with the flange portion 100a is connected to the base 101 of the mounting device shown by diagonal lines.
It is fixed by screws (not shown). This main body 100
As shown in the figure, a power transmission shaft 2 which is inserted into the shaft and driven up and down is guided therein.

Further, the opening/closing shaft 1 is inserted into the power transmission shaft 2 and is in a sliding state where it can be driven up and down.
It is provided so that its lower end protrudes.

The lower end of the opening/closing shaft 1 is provided to supply a power source to a gripping mechanism for gripping an article.

This gripping mechanism is provided so as to be detachable via an attachment/detachment mechanism. The configuration of this attachment/detachment mechanism is that a base 15 having a substantially cap-like shape is provided as a base and is screwed into a threaded portion 2b extending downward from the lower end portion of the power transmission shaft 2 with two double nuts 16. There is.

The rotary cylinder 6 inserted through the outer peripheral surface of the base 15 has a cam groove, which will be described later, formed on the outer peripheral surface, and the holding pin 5 holds the base 15 and the rotary cylinder 6 in the shown holding state.

In addition, a rotating cylinder 6 is provided in the main body 10 that serves as the base of the gripping mechanism.
Two locking pins 7 are provided on both walls, and the locking pins 7 are vertically disposed in the 1800 direction and are locked in the cam grooves of the screws 2b.
The illustrated state is maintained by a compression spring 4 which is biased between the main body 10 and the upper surface of the main body 10 .

Further, on the lower surface of the base 15, a positioning bin 8 is provided downwardly.
is inserted into a positioning hole 10b drilled in the main body 10 to prevent the main body 10 from rotating with respect to the base 15.

The gripping mechanism is provided in the main body 10 configured as described above, and a set of claw bodies 13 having a rotation axis 11 provided in the main body 10 as a rotation fulcrum are provided with biasing means (not shown). are provided so as to come into contact with the bottle 12, and a set of claw bodies 1
3 are biased toward each other in a closed state. The lower corner of the opening/closing shaft 1 slides into contact with the contact surface 1.3a of the claw body 13, and when the opening/closing shaft moves upward, the claw body 13 is brought into the closed state. Furthermore, when the opening/closing shaft 1 moves downward, the claw body 13 is brought into an open state.

Therefore, the above-mentioned cam follower is integrally formed at the upper end portion of the opening/closing shaft 1, and is configured to drive the opening/closing shaft 1 up and down by following the upper cam follower 17a.

On the other hand, the power transmission shaft 2, which is driven vertically, drives the mounting mechanism up and down, and at the same time, one set of pawls 13 opens and closes due to the vertical drive of the opening/closing shaft 1, and at the same time, two points are connected by the push-in portion 1b of the opening/closing shaft 1. An electronic component W shown by a chain line is inserted into an electronic component insertion hole bored in a board (not shown).

Next, FIG. 2 is a developed view of the rotary cylinder of the attachment/detachment mechanism shown in FIG. 1, and shows the outer peripheral surface of the rotary cylinder 6 expanded over 360 degrees. In FIG. 2, 6a and 6b are cam grooves through which the locking pin 7 passes, and the position of the locking pin 7 relative to the cam groove 68.6b in FIG. 1 is indicated by the diagonally shaded position in the figure. Further, 6C16d is a cam groove in which the holding bottle 5 that holds the rotating cylinder 6 is locked, and the position of the holding bottle 5 with respect to the cam grooves 6c and 6d in FIG. 1 is indicated by the diagonally shaded position in the figure. .

Since the holding bottle 5 and the locking bottle 7 are guided by the cam groove of the rotating cylinder 6, the rotating cylinder 6 is attached to the holding bottle 5.
It is guided by and is rotatable with respect to the base 15 described above.

FIG. 3(A) is a view taken along the line XX in FIG.
FIG. This main body part 10 is bored centering on the insertion hole 10d of the opening/closing shaft 1, and has notches 1 in two directions.
0a is formed by processing, and circular arc portions 10c are formed at both ends. Also, the positioning hole 1 with which the positioning pin 8 engages
0b is bored on the top surface.

Next, FIG. 3(B) is a view along the Y-Y arrow in FIG. 1, and is a bottom view of the rotary cylinder 6. As shown in the figure, protrusions 6e are formed on the rotating cylinder 6 in two directions, and the arcuate portion 10c of the main body 10 is held in contact with these protrusions 6e. There is.

The attachment/detachment operation with the configuration described above is performed by moving the gripping mechanism to the rotary cylinder 6.
, and align the phases so that the notch 10a and the protrusion 6e of the rotary cylinder 6 are aligned. At that time, there are two insertion directions: the positioning hole 10b and the positioning pin 8.
determine the direction so that they fit together.

Next, referring to FIG. 2, the gripping mechanism is pushed into the rotary cylinder 6 against the compression force of the compression spring 4, and the locking pin 7 is inserted into the cam grooves 6a, 6b so that the positioning pin 8 is After fitting into the positioning hole 10b of the head, the rotary cylinder 6 is rotated in the Z direction until the locking pin 7 is at the positions 6h and 61.

Thereafter, by further rotating the rotary cylinder 6, the bin 7 is moved to the shaded position.

At this time, the locking pin 7 passes through each peak of the cam groove 68.6b, and then stops at positions 6h and 61. Also,
The arcuate portion 10c of the main body is rotated to the position of the protrusion 6e of the rotary cylinder 6, and is pressed against the protrusion 6e by the compression spring 4, so that it is securely positioned and fixed.

On the other hand, when removing it, it is sufficient to rotate the rotary cylinder body 6 in the direction opposite to the Z direction and perform the above procedure in reverse.

In the gripping mechanism installed in the above procedure, when an overload is applied to the claw body 13, the compression spring 4 is compressed, and the locking pin 7 is compressed.
This prevents the gripping mechanism from coming off due to the generation of rotational force in the rotary cylinder body 6 when the cylindrical member tries to rise upward while being guided by the cam groove, and damaging the gripping mechanism and the main body of the mounting apparatus.

In the above embodiment, the gripping mechanism was fixed in the rotational direction by the positioning pin 8 and the rotation cylinder 6 was rotated to install the gripping mechanism, but the positioning pin 8 was eliminated and the rotation cylinder 6 By increasing the positional accuracy of 6h and 61 shown in FIG. 2, which are the final positions of the cam grooves, and making it possible to position the rotational direction with the locking pin 7, the rotating cylinder 6 is fixed and the gripping mechanism is activated. It can also be installed by rotating it.

[Effects of the Invention] As explained above, the attachment/detachment mechanism of the mounting mechanism of the present invention does not take much time to set up the attachment/detachment/replacement work of the mounting mechanism, and even if an overload is applied due to some kind of malfunction during the mounting operation. , it is possible to provide a mechanism for attaching and detaching a mounting mechanism that does not damage the mounting mechanism and the main body of the mounting apparatus.

[Brief explanation of the drawing]

Fig. 1 is a front view of a broken main part of a structure in which a mounting mechanism and a detachment mechanism are integrated; Fig. 2 is a developed view of the rotary cylinder of the detachment mechanism shown in Fig. 1; A) is a view taken along the line XX in FIG. 1, and FIG. 3(B) is a view taken along the line YY in FIG. In the figure, l: opening/closing shaft, 2: power transmission shaft, 4: compression spring, 5: holding bottle, 6: rotating cylinder, 6a, 6b, 6C16d: cam groove ,6
e... Projection, 7... Locking pin, 8... Positioning pin, 10... Main body, 10c... Arc part, 13
...Claw body, 15... Base.

Claims (1)

[Claims] An article mounting mechanism including an attachment/detachment mechanism that is attached to an article mounting device, the article mounting mechanism including a cylindrical main body that is driven relative to the article mounting device, and that can be freely attached to and detached from the main body via the attachment/detachment mechanism. a gripping mechanism; the attachment/detachment mechanism includes a rotary cylindrical body that is rotatable and slidable relative to the main body and has a cam groove formed on its outer circumferential surface for guiding a locking member provided on the gripping mechanism; 2. An article mounting mechanism comprising an attachment/detachment mechanism, comprising a biasing means provided between the gripping mechanism and the main body, the gripping mechanism being rotated relative to the main body to be attached to and removed from the main body.