JPS6347572B2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Purpose of the Invention [Field of Industrial Application] This invention positions the hooks at both ends of a tension coil spring supplied from a spring supply device,
Used to hold the tension coil spring in its position.

[Conventional technology]

When assembling a spring, in which the hooks at both ends of the tension coil spring are hooked onto a pair of hook receivers formed on the product, in order to reduce entanglement between the tension coil springs, the winding diameter portion of the spring should be tightly wound or the tension coil spring should be tightly wound. The hook part of the coil spring is wound over 360 degrees to eliminate the opening and the parts feeder is used to supply the parts. Since it is difficult to assemble a tension coil spring having a long length, the work of assembling the tension coil spring has heretofore been mainly carried out manually, and only some parts have been automated.

For this reason, in the former case, even when the product assembly is automated, only the work of assembling the tension coil spring must be done manually by an operator, making it impossible to unmann the assembly line. In addition, the latter method is not compatible with hook receivers of different shapes and heights, and when installing a tension coil spring with a large spring constant or a tension coil spring with a large extension, the device becomes large and heavy. At the same time, there was the disadvantage that the structure became complicated.

[Problem that the invention seeks to solve]

The present invention solves the above-mentioned disadvantages of the prior art, thereby making it possible to determine the direction of the hook portions at both ends of a tension coil spring supplied from a spring supply device to a spring receiving block, and to hold the spring in that state. In addition, the present invention aims to be compatible with various tension coil springs having different spring winding diameters, wire diameters, and lengths, to be lightweight and compact, and to enable automation of the assembly of tension coil springs.

(B) Structure of the Invention The present invention relates to a tension coil spring positioning device, in which a spring length is adjusted by a drive source below a spring delivery portion of a supply guide that guides a tension coil spring supplied from a spring separation and supply device downward at a predetermined position. V that is moved back and forth in the horizontal direction perpendicular to the vertical direction
A spring receiving block is provided with a notched groove in the shape of a letter, and the notched groove of this spring receiving block is inclined diagonally upward at both ends in a direction away from the supply guide so as to come into contact with the hook part of the spring halfway. A slope guide is provided which is horizontal at its tip, and a presser plate spring is provided above the spring receiving block in the direction of movement, the horizontal portion of the slope guide presses against the wound diameter portion of the tension coil spring. It is.

〔Example〕

An embodiment of the present invention will be described based on FIGS. 1 to 3.

In FIG. 1, a tension coil spring 4 is supplied to a supply guide 2 of a tension coil spring positioning device 1 through a supply pipe 3 whose one end is connected to a spring separation supply device (not shown), for example, by actuator operation. Reference numeral 5 denotes a spring delivery part having a downward opening provided in the supply guide 2. Below the spring delivery part 5, there is a V-shaped notch that can reciprocate in the horizontal direction perpendicular to the length direction of the spring. A spring receiving block 6 with a groove 7 is provided. The slope guide 8 disposed on both ends of the notch groove 7 of the spring receiving block 6 has one end fixed to the fixed base 11 via the first block 9 located below the supply guide 2, and the other end It is fixed to a fixed base 11 via a second block 10 located below the slope guide 8.

The slope guide 8 has hook portions 4a of a tension coil spring 4 moved by a spring receiving block 6 on the way in a direction away from the supply guide 2 at both ends of the notched groove 7 (see Fig. 3c). A sloped surface 8a that slopes diagonally upward and a horizontal surface 8b that becomes horizontal at its upper end are formed. Above the spring receiving block 6 in the moving direction,
At the position corresponding to the horizontal part of the slope guide 8,
A presser plate spring 12 that presses against the winding diameter portion 4b of the tension coil spring 4 is attached to the upper surface of the slope guide 8 via a mounting plate 13.

The spring receiving block 6 having the V-shaped notch groove 7 is a slide table that is provided on a sliding base 14 that is integrated with a fixed base 11 so as to be slidable in the horizontal direction with two guide rods 15, 15. 16, and is reciprocated horizontally between the lower side of the supply guide 2 and the right end of the slope guide 8 by an air cylinder 17 provided on the opposite side of the slide table 16.

Next, the operation of the apparatus will be explained with reference to FIGS. 2 and 3.

As shown in FIG. 3a, the V-shaped cutout groove 7 is inserted into the device 1 which has been moved rightward from the spring delivery section 5, and from the spring separation and supply device to the supply guide 2 via the supply pipe 3. When the tension coil spring 4 is supplied, the tension coil spring 4 is temporarily positioned by the spring delivery part 5 provided at a predetermined position of the supply guide 2, and is supplied to the upper surface of the spring receiving block 6 located below. Air cylinder 1 after supplying spring
7, the spring receiving block 6 is moved to the left via the slide table 16.
The tension coil spring 4 is transferred and held in the V-shaped notch groove 7 that has moved from the upper surface of the spring receiving block 6 to the lower side of the spring transfer portion 5 (FIG. 3b). In this state, the orientation of the hook portion 4a of the tension coil spring 4 changes each time the spring is supplied and is not constant. Next, when the spring receiving block 6 is moved rightward by the air cylinder 17, the tension coil spring 4, whose winding diameter portion 4b is held by the V-shaped notch groove 7, moves to the inclined surface of the slope guide 8. Since the hook portion 4a is moved to the right with respect to the hook portion 4a, the hook portion 4a is moved to the right as shown in FIG.
After a part of the slope 8a comes into contact with the slope 8a,
It is rotated clockwise as shown by the arrow by the rotational moment received from. This rotation continues until the entire hook portion 4a comes into contact with the inclined surface 8a,
After that, it does not rotate, and the inclined surface 8a and the hook part 4a
A horizontal surface 8 that follows the inclined surface 8a by sliding between
b, where the hook portion 4a is placed on the horizontal surface 8.
The positioning of the hook portion 4a of the tension coil spring 4 is completed when the hook portion 4a of the tension coil spring 4 is rotated to the position where it contacts the spring 4b. When the movement of the spring receiving block 6 is stopped by the air cylinder 17, the tension coil spring 4
is held at a predetermined position by the tip of a presser plate spring 12 provided above the spring receiving block 6 (FIG. 3d).

FIG. 4 shows another embodiment of the present invention, in which another slope guide 8 having an inclined surface 8a and a horizontal surface 8b facing downward is superimposed on the slope guide 8 of the previous embodiment. This is the case.

When configured in this way, the tension coil spring 4
The hook portion 4a has both inclined surfaces 8a and horizontal surfaces 8.
The same effect as described in the previous embodiment is achieved through the space formed by b.

(c) Effects of the Invention This invention holds a tension coil spring temporarily positioned by a supply guide in a spring receiving block provided with a V-shaped notch groove, and when the spring receiving block is moved in the horizontal direction. , the hook part of the tension coil spring protruding from both ends of the V-shaped notch groove is rotated by contacting with a slope guide having an upward slope and a horizontal surface. Even when the hook portions of the tension coil springs supplied from the toner are oriented unevenly, the hook portions can be reliably positioned in a predetermined direction and held in that position by the presser plate spring.

[Brief explanation of drawings]

1 is a perspective view showing an embodiment of the present invention, FIGS. 2a and 2b are a partial plan view and a side sectional view of the positioning section, and FIGS. 3a to 3d are explanatory views of the tension coil spring positioning operation; FIG. 4 is a cross-sectional view of parts of another embodiment. 1... Tension coil spring positioning device, 2...
Supply guide, 4... tension coil spring, 4a...
Hook part, 4b... Winding diameter part, 5... Spring delivery part, 6... Spring receiving block, 7... V-shaped notch groove, 8... Slope guide, 8a... Inclined surface, 8b... Horizontal surface, 12... Presser plate spring, 16
...Slide table, 17...Air cylinder (actuator).

Claims (1)

[Scope of Claims] 1. In a tension coil spring positioning device equipped with a supply guide that guides a tension coil spring supplied from a spring separation supply device downward at a predetermined position, a drive source is provided below the spring delivery portion of the supply guide. A spring receiving block is provided with a V-shaped notch groove that is reciprocated in a horizontal direction perpendicular to the length direction of the spring, and a spring receiving block is provided with a notch groove on both ends of the spring receiving block in a direction away from the supply guide. A slope guide is provided that is inclined diagonally upward so as to come into contact with the hook part of the spring in the middle, and is horizontal at its tip. A tension coil spring positioning device characterized by having a presser plate spring that presses the tension coil spring. 2. The tension coil spring positioning device according to claim 1, wherein the spring receiving block is driven by an actuator via a slide table provided so as to be slidable in the horizontal direction.