JPH0712581B2 - Spring locking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is applied to a spring locking device used for locking a spring having locking rings at both ends to a predetermined locked pin, The present invention proposes a spring locking device having a simple structure in which the spring is smoothly slid from the locking body of the device to the locked pin and locked by the reduction elastic force of the spring itself.

(Prior Art) As a conventional locking device, a tripping cylinder is fitted onto a locking needle that locks a spring by a locking ring, and the tripping cylinder is moved to engage. There is known a structure in which a snap ring is removed from a locking needle and moved to a locked pin.

(Problems to be Solved by the Invention) In this known device, it is difficult to smoothly move the locking ring to the locked pin when moving the tripping cylinder, and moreover, the tripping cylinder does not move to the locked pin. There is a risk that it may collide with a nearby member and cannot be used when the surroundings of the locked pin are narrow.

(Means for Solving Problems) This invention has taken the following technical means in order to solve the above problems.

That is, the left and right holders 4, 4 respectively provided in the opening and closing arms 1, 1 of the arm opening and closing device 2, and the long holes 6 provided in the left and right holders 4, 4.
The left and right locking bodies 8 and 8 which are elastically biased so as to approach toward the left-right center and which can be opened / closed and rotated around the guide pins 9, 9 which are slidably movable in the left-right direction A lock member opening / closing device 12 for opening and closing, and a lock portion 17, 17 provided at the tip of the lock body 8 is a spring 15 which is a locked object due to the opening motion of the open / close arms 1, 1. It is locked by the locking wheels 16 and 16 at both left and right ends of the
The locking bodies 17,8 operate in an inverted eight-shaped inclined posture in which the locking portions 17,17 come into contact with the outer side portions of the 8,19 and the width of the locking portions 17,17 becomes narrower, and this inclined posture is adopted. The locking bodies 8 and 8 are configured such that the springs 15 slide from the locking portions 17 and 17 to the locked pins 18 and 19 by their own reduction elastic force.

(Operation) The locking bodies 8 and 8 are moved downward so that the locking wheels 16 and 16 are engaged with the locking portions 17 of the locking body 8.
When the arm opening / closing device 2 is opened, the opening / closing arms 1 and 1 are opened and the spring 15 is slightly extended to the locking bodies 8 and 8.
15 is locked. Locking wheels 15,15 above the locked pins 18,19
When the locking body opening / closing device 12 is opened with a view, the long hole 6,
The guide pins 9, 9 are guided by the 6 to move the left and right locking bodies 8, 8 left and right, and at the same time, the locking portions 17, 8 are provided on the outer side of the locked pins 18, 19.
Since the 17 contacts, the locking bodies 8 and 8 are in an inverted octagonal inclined posture, and the springs 15 from the locking portions 17 and 17 that are narrow side in this way.
Is slid down by its own reduction elastic force, the locking wheels 16, 16 move to the locked pins 18, 19, and the spring 15 is locked by the locked pins 18, 19.

(Embodiment) Next, an embodiment of the present invention will be described with reference to the drawings.

As shown in perspective in Fig. 1, the left and right open / close arms 1,1
Is the front part by the arm opening / closing device 2 with the rear part as the fulcrum.
1a, 1a are provided so as to open and close to the left and right (the open position is shown in the figure), and the two plates are spaced apart from each other by the groove 3
The left and right holders 4, 4 forming the above are attached to the front portion 1a via the vertical plate 5.

The left and right holders 4 are provided with a long hole 6 and a guide pin 9 is provided at an intermediate portion of a locking body 8 having a locking needle 7 attached to a lower portion thereof. , 8 are movable in the left-right direction and can be rotated, and moreover, can be rotated around the fulcrum pin 9, and the tension spring 10 is provided between the guide pins 9 and 9.
Is suspended.

Working piston 13 of a lock body opening / closing machine 12 which is pivotally supported on the left and right holders 4 by means of pins 11 and comprises a cylinder or the like.
Is pivotally attached to the upper part of the locking body 8 (the side far from the locking needle 7) by a pin 14. Locking wheels 16 and 16 are formed at both ends of a spring 15 that is a locked object.

Closing the left and right open / close arms 1,1 and locking parts at the tips of the locking needles 7,7
17 and 17 are looked into the locking wheels 16 and 16, and when the opening / closing arms 1 and 1 are opened, the spring 15 extends slightly and the locking wheels 16 and 16 are attached to the locking portions 17 and 17 as shown in FIG. It is elastically locked, and the locking part 17 is seen above the locked pins 18 and 19 shown in FIG.
7 and 17 are positioned on the left and right outer sides of the locked pins 18 and 19, and the operating piston 13 of the locking body opening / closing mechanism 12 is retracted to the left and right, the locking portions 17, 17 cause the locked pins 18, 17 to move. When contacted with the outer side portion of the locking member 19, the locking bodies 8 and 8 are in a tilted shape in an inverted eight shape when viewed from the front. 16 and 16 are the locking body 8 and the long hole so that the locking wheels 16 and 16 are slid down on the locking surfaces of the locking portions 17 and 17 and locked to the locked pins 18 and 19. 6 and the like are configured.

As shown in the side view in FIG. 4, the main part of the above-described spring locking device is attached to a moving mechanism 22 having a vertical moving cylinder 20 and a forward / backward moving cylinder 21, and is conveyed by a conveyor 23 in a direction perpendicular to the plane of FIG. The spring 15 on the direction changing device 32 provided at the terminal end of the spring supply device 31 is transferred to the locked pins 18 and 19 provided on the workpiece 24 that is carried to the above-mentioned locking operation. It is something to do.

The illustrated orientation changing device 32 is shown in FIGS. 5 and 6 in perspective views in the respective orientations, and in FIGS. 7 and 8 respectively.
As shown in the plan view of the drawing, the springs 15 transferred in series by the spring supply device 31 are turned sideways along the opening / closing direction of the locking needles 7 and are associated with the direction changing operation. Front and rear springs 15, 1 adjacent to each other when locked to the stop needles 7, 7.
5. It has the following functions to prevent troubles caused by entanglement between each other.

That is, the rotary table 34 is attached to the rotary motor 33 that reciprocally rotates by an angle of about 90 °, and the groove 35 into which one spring 15 can enter vertically is formed with the semi-circular convex portion 36 and the blade. Shape
37 and a groove near the tip of the blade-shaped protrusion 37.
An auxiliary groove 35a communicating with 35 is formed. Swivel table 34
Stopper 38 and stopper spring 39 that come into contact with part of the outer circumference of
Are attached to the stationary member 40 and the shooter 41 of the spring supply device 31, respectively.

First, as shown in FIG. 7, the rotation motor 33 is stopped at the feed position where the groove 35 of the rotary table 34 is aligned with the feed groove 42 of the shooter 41, and one spring 15 is fed from the shooter 41 into the groove 35. The stopper 38 blocking the feeding front end side of the groove 35 prevents the spring 15 from escaping from the rotary table 34.

Next, the rotation motor 33 rotates 90 ° in the direction of arrow A in FIG.
The spring 15 accommodated in the groove 35 of the rotating table 34 is aligned with the arrangement direction of the locking needles 7, 7 which is perpendicular to the feed groove 42 of the shooter 41.

Lower the locking bodies 8,8 to move the locking parts 17,17 to the locking ring 1 of the spring 15.
When the locking bodies 8 and 8 are opened to the left and right, the locking portions 17 and 17 open outward along the groove 35 and the spring 15 is slightly extended as shown in FIG. The spring 15 is locked to the locking bodies 8, 8.

When the locking bodies 8 and 8 move toward the locked pins 18 and 19 and then the turning motor 33 turns back by 90 ° in the direction of the arrow A, the tip of the shooter 41 enters the sub groove 35a. The foremost spring 15 except for the vicinity of the front locking ring 16 is the R-shaped portion of the blade-shaped convex portion 37.
The front portion of the frontmost spring 15 is pushed into the rear portion of the groove 35 of the rotary table 32 that has been pushed back slightly by 37a and finished the return rotation, and the frontmost spring 15 pushed by the rear spring 15 is removed. It enters into the groove 35 of the rotary table 32 and becomes the state of FIG. The stopper spring 39 serves to prevent the spring 15 from jumping out of the groove 35 of the rotary table 34, and is shown in FIG. 7 in which the feed groove 42 of the shooter 41 is aligned with the groove 35 of the rotary table 34. When rotating 90 ° from the position, the locking ring 16 of the spring 15 in the groove 35 is entangled with the locking ring 16 of the frontmost spring 15 in the feed groove 42, and at the moment of the above rotation, The stopper spring 39 prevents the spring 15 in the groove 35 from being pulled out by the spring 15 to the outside of the outer periphery of the rotary table 34.

The shooter 41 is housed in a row in the feed groove 42 by repeating the reciprocating vibration so that the shooter 41 rises diagonally upward and forward in the longitudinal direction of the feed groove 42 and then descends diagonally downward and rearward. The spring 15 moves forward intermittently.

The spring 15 is supplied to the shooter 41 automatically from the hopper 44.

(Effect of the Invention) Since the spring locking device according to the present invention is configured as described above, the locking bodies 16 on the left and right locking wheels 16, 16 of the spring 15 respectively.
When the locking bodies 17, 8 are opened and the locking body 17 is opened, the spring 15 is locked by the locking portions 17, 17, and the locking portions 17 are located outside the locked pins 18, 19. , 17 and the locking body opening / closing mechanism 12 is opened to bring the locking parts 17, 17 into contact with the outer sides of the locked pins 18, 19, and the left and right locking bodies 8, 8 are engaged. The sides of the stoppers 17, 17 incline in a narrow inverted octagonal shape, and due to this inclination operation and the reduced elastic force of the spring 15, the springs 1 are attached to the locked pins 18, 19.
5 moves and is locked.

According to the present invention, the spring 15 is picked up by the locking bodies 8 and 8 only by the opening / closing operation of the locking bodies 8 and 8 which lock the spring 15, and the locked bodies 18 and 8 receive the locked pin 18. Because it is locked at 19,
The locking bodies 8 and 8 have a simple and thin shape, and the spring 15 can be reliably locked without a mistake even when the locked pins 18 and 19 are narrow.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, FIG. 1 is a perspective view, and FIG.
FIGS. 3 and 4 are front views in respective operating positions, FIG. 4 is an overall side view in which a spring locking device is used in an automatic line, and FIG.
FIG. 6 and FIG. 6 are perspective views of the orientation changing device at respective positions, and FIGS. 7 and 8 are plan views of FIG. 5 and FIG. 1 ... Opening / closing arm, 2 ... Arm opening / closing device, 4 ... Left / right holder, 8 ... Locking body, 9 ... Guide pin, 12 ... Locking body opening / closing machine, 15 ... Spring, 17 ... Engagement Stops, 18, 19 ... Locked pins.

Claims (1)

[Claims] 1. A left and right holder provided on each opening and closing arm of an arm opening and closing device, and a guide pin that slides in a long hole provided on the left and right holder so as to be movable in the left and right directions. The left and right locking bodies that are elastically urged toward each other and a locking body opening / closing device that opens and closes the locking body, and the locking portion provided at the tip of the locking body opens and closes. When the arm is opened, it is locked by the lock wheels at the left and right ends of the spring, which is the locked object, and when the lock body opener opens, the locking part abuts on the outside of the locked pin and locks. The locking body operates in an inverted octagonal inclined posture in which the side of the portion becomes narrow, and the locking is performed so that the spring slides to the locked pin by the contraction elastic force of the locking portion in this inclined posture. A spring locking device characterized in that the body is configured.