JPH091434A - Apparatus for holding spring and apparatus for assembling spring - Google Patents

Abstract

PURPOSE: To improve an assembling operability by surely holding a spring while easily attaching the spring. CONSTITUTION: In a spring assembling apparatus provided with a strut clamp mechanism to hold a shock absorber, a spring clamp mechanism to nip the outer diameter of a coiled spring, a spring compressing mechanism to compress the coiled spring and a nut fastening mechanism to fix an upper sheet; a pair of holding arms 37a, 37b to nip the outer diameter of coiled springs 014a, 014b and a plurality of a pair of locking pawls 44a, 44b are juxtaposed so that the tip parts can intrude into the inner diameter side of the coiled spring are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spring holding device and a spring assembling device for holding and assembling a coil spring used in, for example, a vehicle suspension.

[0002]

2. Description of the Related Art FIG. 14 schematically shows a front suspension having a strut type shock absorber.

As shown in FIG. 14, an upper plate 002 is provided at the lower end of the strut type shock absorber 001.
The upper end of the knuckle 003 is connected by the knuckle 003, and the lower end of the knuckle 003 is connected to the lower frame 004 of the vehicle body.
Is rotatably supported. Drive shaft 005
An axle 007 is connected to the end of the axle 007 via a constant velocity joint 006, and the axle 007 is rotatably supported by a knuckle 003 by a bearing 008. Also,
Axle 004 has hub 009 and brake disc 010
Is fixed, and the wheel 012 to which the tire 011 is attached is fixed to the hub 009.

On the other hand, the strut type shock absorber 0
Lower seat 013 is fixed to 01 by welding, and compression coil spring 0 is attached to this lower seat 013.
The lower part of 14 is supported. Shock absorber 00
A dump rubber 017 is attached to the piston rod 015 of No. 1 via a cover 016.
An upper sheet 018 that supports the upper portion of the compression coil spring 014 is attached to the upper part of the. Further, an insulator 020 is mounted on the upper end portion of the piston rod 015 of the shock absorber 001 via a bearing 019, and a nut 021 is screwed to be fixed. The insulator 020 is used for the vehicle body frame 022.
The upper end of the shock absorber 001 is supported by the vehicle body by being fixed to the vehicle body.

When the thus constructed front suspension is assembled by an assembly line, a compression coil 014 assembled on top of the shock absorber 001.
Is placed on the lower seat 013 in a free state, and is compressed by a dedicated mechanical tool (not shown). The dump rubber 017 and the upper seat 01 are attached to the piston rod 015.
8, after installing the insulator 020 etc., the nut 02
1 is mounted by fixing each member.

An example of such a coil spring assembling apparatus is disclosed in Japanese Patent Publication No. 57-20105. In the one disclosed in this publication, a pair of pressing plates for compressing a coil spring are provided so as to be able to move up and down, and an upper sheet is placed on an upper end portion of a coil spring that is placed on a lower sheet in a free state, and a pair of pressing plates are pressed. By lowering the plate while holding the upper sheet, the coil spring is compressed and the upper sheet is fixed to the strut by the bolt.

[0007]

In the above-described conventional coil spring assembling apparatus, the pressing plate is compressed with respect to the coil spring in the free state, and the coil spring is fixed by the bolt in this compressed state. doing. Therefore, when the pressing plate compresses the coil spring, the coil spring becomes unstable and cannot be reliably assembled. That is, when the compression force of the coil spring acts in the radial direction when the coil spring is compressed by the pressing plate, the coil spring may be displaced laterally or may be disengaged from the pressing plate. In this case, the assembling work must be interrupted and the coil spring must be set again, resulting in a reduction in work efficiency.

The present invention is intended to solve such a problem, and it is possible to securely hold a spring and to easily mount the spring to improve the workability of assembling, and a spring assembling device and a spring assembling device. The purpose is to provide.

[0009]

In the spring holding device of the present invention for achieving the above object, a base end portion is pivotally attached to a main body, and a guide surface for holding an outer diameter of a coil spring is formed at a front end portion. A pair of holding arms, a drive means for rotating the pair of holding arms in synchronization with each other, a plurality of the holding arms arranged side by side along the axial direction of the coil spring, and a base end portion of the holding arms. A pair of locking claws that are pivotally attached to the pair of holding arms and have locking projections formed at the tips to enter the inner diameter side of the coil spring, and the locking claws that are the inner diameters of the coil springs. And an urging member for urging the urging member in a direction to enter the side.

The spring holding device of the present invention is characterized in that a pair of holding claws for holding the outer diameter of the coil spring is provided at the tip ends of the pair of holding arms.

Further, according to the spring assembling apparatus of the present invention, the coil spring whose one end is held by the first disk is compressed in the axial direction and the other end is held by the second disk.
A spring assembling device for assembling the coil spring by fixing one end of a support shaft fixed to the center of the first disc to the second disc, and a clamping means for holding the support shaft, Spring holding means for holding the outer diameter of the coil spring whose one end is held by the first disc of the support shaft, and spring compression for compressing the coil spring in the axial direction while being held by the spring holding means. Means and fixing means for fixing the second disk holding the other end of the coil spring compressed by the spring compression means to the support shaft.

Further, in the spring assembling apparatus of the present invention, the spring holding means includes a pair of holding arms for holding the outer diameter of the coil spring, and a plurality of the holding arms arranged along the axial direction of the coil spring. A pair of locking claws, which are arranged in parallel and whose tip portions can enter the inner diameter side of the coil spring, and a pair of holding arms, which are provided at the tip portions of the holding arms, selectively engage according to the outer diameter of the coil spring. It has a pair of pressing claws for stopping.

[0013]

When the coil spring is held by the spring holding device of the present invention, when the pair of holding arms are rotated in synchronization with the coil spring by the driving means,
The guide surface formed at the tip of the pair of holding arms holds the outer diameter of the coil spring, and the locking projections of the pair of locking claws arranged side by side along the axial direction of the coil spring By being biased by the member, one of them enters the inner diameter side through the gap of the wire diameter of the coil spring, and the rest abuts the outer diameter of the coil spring, so that this coil spring can be reliably held. .

Further, since the pair of holding pawls for holding the outer diameter of the coil spring are provided at the tip end portions of the pair of holding arms, the pair of holding pawls selectively function according to the outer diameter of the coil spring. Can cope with various types of coil springs, and even when the coil springs are inclined, the outer diameter of the coil springs can be pressed by the pair of pressing pawls, and the coil springs can be prevented from falling. .

On the other hand, when the coil spring is assembled by the spring assembling apparatus of the present invention, the support shaft is held by the clamp means, and the coil spring whose one end is held by the first disc of the support shaft is set by the spring holding means. With the outer diameter held, the coil spring was compressed in the axial direction by the spring compression means, the other end of the coil spring was held by the second disc, and was fixed to the center of the first disc. The coil spring can be assembled by fixing one end of the support shaft to the second disc by the fixing means.

The spring holding means includes a pair of holding arms for holding the outer diameter of the coil spring, and a plurality of spring holding means arranged side by side along the axial direction of the coil spring so that the tip ends can enter the inner side of the coil spring. Of the coil spring and the pair of holding claws that selectively lock according to the outer diameter of the coil spring, the outer diameter of the coil spring is held by the pair of holding arms, and a plurality of coil springs are arranged side by side. Since one of the pair of locking claws enters the inner diameter side through the gap of the wire diameter of the coil spring and the rest abuts the outer diameter of the coil spring, the coil spring can be securely held, and The pair of pressing claws selectively function according to the outer diameter of the coil spring, and can cope with various coil springs.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a schematic view of a spring holding device according to an embodiment of the present invention, FIG. 2 is a perspective view of a main part of the spring holding device of the present embodiment, and FIG. 3 is a spring assembly to which the spring holding device of the present invention is applied. 4 is a front view of the spring assembling device of the present embodiment, FIG. 5 is a bottom front view of the spring assembling device, FIG. 6 is a bottom side view of the spring assembling device, and FIG. 7 is a strut type. A plan view of the shock absorber clamp device, a plan view of the spring holding device in FIG. 8, a top front view of the spring assembly device, a top side view of the spring assembly device in FIG. 10, and a book in FIGS. 11 to 13. The outline showing the operation by the spring assembly device of the example is shown.

In the embodiments described below, the spring holding device and the spring assembling device of the present invention are applied to a compression coil spring assembling device mounted on a vehicle suspension. Note that members having the same functions as those in the related art are denoted by the same reference numerals, and redundant description will be omitted.

As shown in FIGS. 3 and 4, in the spring assembling device of this embodiment, the strut clamp mechanism 11 for holding the shock absorber 001 and the coil spring 014 mounted on the shock absorber 001 are clamped at predetermined positions. Spring positioning mechanism 12 for positioning to the height of the lower seat and the lower seat 0 of the shock absorber 001.
Coil spring 01 whose lower end is held by 13
4, a spring clamp mechanism 13 that holds the outer diameter of the coil spring 4, a spring compression mechanism 14 that compresses the held coil spring 014, an upper seat clamp mechanism 15 that clamps the upper seat 018 that holds the upper end of the coil spring 014, and a shock. The shaft withdrawing mechanism 16 for withdrawing the piston rod 015 of the absorber 001 to the upper end position, and the nut 02 on the upper end of the piston rod 015.
It is composed of a nut fastening mechanism 17 for fastening the upper seat 018 by fastening 1 and a strut payout mechanism 18 for paying out the strut having the coil spring 014 attached to the shock absorber 001 from the device.

That is, in the strut clamp mechanism 11 provided in the lower portion of the frame 21, as shown in FIGS. 5, 6, and 7, a pair of rails 22 are fixed to the lower portion of the frame 21 along the vertical direction. And this rail 2
An L-shaped moving substrate 23 is attached to the unit 2 so as to be movable up and down. A pair of guide rods 24 are fixed to the movable substrate 23 along the horizontal direction, and a pair of clamp arms 25a and 25b are supported by the guide rods 24 so as to be opposed to each other. The main body of the air cylinder 26 is connected to one clamp arm 25a, and the drive rod 27 of the air cylinder 26 is connected to the other clamp arm 25b. Further, the clamp arms 25a and 25b can be moved toward and away from each other in synchronization by a pair of racks 27a and 27b and a gear (not shown) meshing with the racks 27a and 27b.

A pedestal 28 having two stepped portions is movably supported by an air cylinder 29 on the upper surface of the movable substrate 23, and the vertical position of the shock absorber 001 to be clamped can be changed. . Also,
A receiving plate 30 having two stepped portions is movably supported on the lower surface of the movable substrate 23 by an air cylinder 31, and the compression amount of the coil spring 014 to be compressed can be changed.

Therefore, the moving board 23 is provided with a pair of rails 22.
When the air cylinder 26 is driven (reduced) at a predetermined position, the pair of clamp arms 25a and 25b are moved up and down along
Is guided by the guide rod 24, and
The shock absorber 001 supplied to the pedestal 28 of the moving substrate 23 can be clamped by the pair of racks 27a and 27b and the gears synchronously approaching each other.

Further, in the spring positioning mechanism 12, as shown in FIGS. 5 and 6, an air cylinder 33 having a vertically movable reciprocating drive rod 32 is attached below the moving base plate 23 of the strut clamp mechanism 11. ing. The three dogs 34a, 34b, 34c, 34d are fixed to the side portions of the moving substrate 23 that moves up and down, while the dogs 34a, 34b, 34 are fixed to the frame 21.
A detection sensor 35 for detecting c and 34d is attached.

Therefore, the air cylinder 33 is driven (extended).
Then, the drive rod 32 extends to push up the moving board 23 from below and raise the moving board 23. The detection sensor 35 detects the predetermined dogs 34a, 34b, 34c, 34d, and the pair of moving boards 23 is moved through the moving board 23. Clamp arm 2
Shock absorber 001 clamped by 5a and 25b
The coil spring 014 attached to can be positioned at a predetermined position. The positions to be positioned are four positions of the descending original position, the clamp position of the long and short springs, and the spring compression position.

In the spring clamp mechanism 13, as shown in FIGS. 5, 6 and 8, the frame 21 is located above the strut clamp mechanism 11 and the frame 21 is provided with a pair of holding arms 37a and 37b by a pair of brackets 36. The base end is rotatably attached, and each holding arm 37a, 3
The pair of gears 38a and 38b, which are formed on opposing surfaces and mesh with each other, can synchronously rotate 7b.
The main body of the air cylinder 39 is connected to the one holding arm 37a via the connecting link 40a, and the air cylinder 3
The drive rod 41 of 9 is connected to the other holding arm 37b via the connection link 40b.

The pair of holding arms 37a and 37b are shown in FIG.
And, as shown in FIG. 2, the openings 42a,
42b is formed and the openings 42a and 42b are formed.
Guide surfaces 43a and 43b for holding the outer diameter of the coil spring 014 are formed above and below the. A plurality of locking claws 44a and 44b (five in this embodiment) are vertically stacked in the openings 42a and 42b of the holding arms 37a and 37b. The locking claws 44a and 44b have holding arms 37a and 37b at their base ends.
The locking projections 45a and 45b are integrally formed at the tip end of the coil spring 104 so as to come into contact with the outer diameter of the coil spring 104 or to penetrate from the wire diameter to the inner diameter side. The plurality of locking claws 44a, 44b are urged by the tension springs 46a, 46b in the direction in which the locking protrusions 45a, 45b enter the inner diameter side of the coil spring 104, and the stoppers 47a, 47b rotate the locking claws 45a, 45b. The moving position is restricted. Pressing pawls 48a and 48b for pressing the outer diameter of the coil spring 104 are rotatably attached to the tip ends of the holding arms 37a and 37b, and are pressed by the compression springs 49a and 49b in a direction to press the coil spring 104. ing.

Therefore, when the air cylinder 39 is driven (extended) while the coil spring 104 is positioned between the pair of holding arms 37a, 37b, the holding arms 37a, 3b.
The gears 7a and 7b are synchronously rotated while the gears 38a and 38b are meshed with each other so that their front ends approach each other. Then, each holding arm 37a,
The guide surfaces 43a and 43b of 37b are coil springs 0
The outer diameter of 14 is held and each locking claw 44a, 44b is held.
Also, the tips of the locking protrusions 45a and 45b are close to each other,
If there is a wire diameter of the coil spring 104 in the front, it abuts against this, and the tension springs 46a and 46b hold the outer diameter of the coil spring 014. The coil spring 104 can be clamped so as to be immovable in the radial direction and the axial direction by invading. At this time, the pair of presser pawls 48a and 48b are compressed by the compression springs 49a and 49b.
It can be pressed against the outer diameter of 04.

In the spring compression mechanism 14, as shown in FIGS. 5 and 6, below the moving substrate 23 of the strut clamp mechanism 11, an air cylinder 51 having a vertically movable reciprocating drive rod 50 is formed. Installed side by side. The air cylinder 51 has an operating stroke that is longer than the operating stroke of the air cylinder 33.

Therefore, the air cylinder 51 is driven (extended).
Then, the drive rod 50 extends to push up the movable substrate 23 from below to raise it, and the coil spring 0 clamped and held by the spring clamp mechanism 13 described above.
14 can be compressed by a predetermined amount.

In the upper sheet clamp mechanism 15,
As shown in FIGS. 5 and 6, the spring clamp mechanism 1
3, the base ends of a pair of clamp arms 52a and 52b are rotatably supported on the frame 21 in synchronization with each other. The upper sheet 018 is attached to the tip ends of the clamp arms 52a and 52b. Clamping member 5 for holding
3a and 53b are fixed. An air cylinder 54 is installed on each clamp arm 52a, 52b.

Therefore, the pair of clamp arms 52a, 5
When the air cylinder 54 is driven (extended) while the upper sheet 018 is located between the 2b, the clamp arms 52a and 52b rotate synchronously and approach each other, and the clamp members 53a and 53b hold the upper sheet 018. can do.

On the other hand, in the shaft pull-out mechanism 16 and the nut fastening mechanism 17, as shown in FIGS. 4, 9, and 10, a pair of horizontal guides 55 are fixed to the upper portion of the frame 21 along the horizontal direction. A horizontal moving plate 56 is movably supported by the horizontal guide 55, and the horizontal moving plate 56 can be moved by an air cylinder 57. This horizontal moving plate 56 has three vertical rails 58, 5
9 and 60 are fixed, and each vertical rail 58, 59,
Vertical movement plates 61, 62, 63 are movably supported on the respective 60.
Can be moved by air cylinders 64, 65, 66, respectively. The vertical moving plate 61 is equipped with a drawing cylinder 67 that constitutes the shaft drawing mechanism 16, the vertical moving plate 62 is provided with a first nut runner 68 as the nut fastening mechanism 17, and the vertical moving plate 63 is provided with a second nut runner 69. Each is installed.

An elevating body 71 is connected to the tip of the drive rod 70 of the pull-out cylinder 67, and the piston rod 0 of the shock absorber 001 is connected to the lower end of the elevating body 71.
An openable / closable gripping claw 72 capable of gripping the screw portion of the fifteen is attached, and the gripping claw 72 can be driven by an air cylinder 73. In addition, the frame 21 is provided with a restriction block 74 that is movable along a horizontal direction orthogonal to the horizontal moving plate 56, and can be moved by an air cylinder 75 on and off the moving path of the horizontal moving plate 56. Has become.

Therefore, when the air cylinder 57 is driven,
The horizontal moving plate 56 moves in the horizontal direction, and the air cylinder 57 can be positioned at each moving end of the drawing cylinder 67 or the second nut runner 69 at a predetermined position, that is, at a position above the clamped shock absorber 001. . When the air cylinder 75 is driven (extended),
The restriction block 74 is positioned on the movement locus of the horizontal moving plate 56, and a part of the restriction block 74 abuts when the horizontal moving plate 56 is horizontally moved by the air cylinder 57, so that the first nut runner 68 is at a predetermined position, that is, the clamped shock absorber. 001
Can be positioned above. Then, when the air cylinder 64 is driven when the pull-out cylinder 67 is positioned at a predetermined position, the pull-out cylinder 67 is lowered together with the vertical moving plate 61, and the pull-out cylinder 67 is further moved.
Driving, the grip claw 72 opens and closes and the piston rod 0
The 15 threaded portions can be gripped. When the air cylinders 65 and 66 are driven when the first nut runner 68 and the second nut runner 69 are positioned at predetermined positions, the first nut runner 68 and the second nut runner 69 descend together with the vertical moving plates 61 and 62. , And this first
By driving the nut runner 68 and the second nut runner 69, the nut 021 can be fastened to the threaded portion of the piston rod 015.

In the strut payout mechanism 18, as shown in FIG. 5, FIG. 6 and FIG. 7, a pair of links 76 and 77 are provided in the lower part of the frame 21 so as to form a four-bar linkage mechanism.
One end of each is rotatably attached and each link 7
A pay-out plate 78 is connected to the tip end portions of 6, 7 and can be horizontally operated by an air cylinder 79. Also,
A dispensing table 80 is provided horizontally adjacent to the strut clamp mechanism 11 by an air cylinder 81, and a guide plate 83 is vertically swingably attached to the dispensing table 80 by an air cylinder 82.

Therefore, when the coil spring 014, the upper husband rate 018 and the like are assembled to the shock absorber 101 and the air cylinder 79 is driven in a state where the strut clamp mechanism 11 has released the clamp, the payout plates are provided by the links 76 and 77. 78 moves, and the suspension (shock absorber 101 etc.) is delivered to the delivery table 80. At this time, the guide plate 8 is moved by the air cylinder 82.
By turning 3, you can prevent the suspension from collapsing,
By moving the payout table 80 with the air cylinder 81, the suspension can be carried out.

The operation of the spring assembling apparatus of this embodiment described above will now be described.

As shown in FIG. 11, the shock absorber 001 is carried onto the movable substrate 23 of the strut clamp mechanism 11 by a carrying-in device (not shown). At this time,
Depending on the type of shock absorber 001, the height of the shock absorber 001 is changed by driving the air cylinder 29 and moving the pedestal 28 to set the mounting height of the shock absorber 001 on the moving substrate 23. By driving the cylinder 31 and moving the receiving plate 30, the height is changed, and the thrust height of the shock absorber 001 of the moving substrate 23 is set. The shock absorber 001 is held by driving the air cylinder 26 and rotating the pair of clamp arms 25a and 25b. Further, the air cylinder 33 of the strut positioning device is driven to move the moving substrate 23.
Push up to raise shock absorber 001.
The detection sensor 35 confirms the height position of the shock absorber 001 by detecting the predetermined dog 34b or 34c.

With the shock absorber 101 held by the strut clamp mechanism 11 in this manner,
First, the piston rod 01 of the shock absorber 001
Attach dump rubber 017 to 5 and push down.
Next, the horizontal moving plate 56 is moved by the air cylinder 57 to position the extraction cylinder 67 of the shaft extraction mechanism 16 at a predetermined position. Then, the drawing cylinder 67 is driven to lower the lifting body 71, and further, the air cylinder 73
The upper end portion (screw portion) of the piston rod 015 is gripped by the pair of claws 72 by driving the
7 to raise and lower the lifting body 71,
Pull out 5 to the protruding position. In this state, the compression coil spring 014 is mounted on the lower plate 013.

In this manner, the shock absorber 101 is held by the strut clamp mechanism 11 and the dump rubber 017 and the compression coil spring 014 are mounted, and the coil spring 014 is held by the spring clamp mechanism 13. That is, as shown in FIG. 12, the air cylinder 39 is driven to drive the pair of holding arms 37a, 3a.
7b is rotated synchronously to hold the outer diameter of the coil spring 014 by the guide surfaces 43a and 43b. Then, the tip ends of the respective locking claws 44a and 44b approach each other, and the locking projections 45a and 45b abut against the wire diameter of the coil spring 104 when there is a wire diameter in the front, and the tension spring 46.
The outer diameter of the coil spring 014 is held by a and 46b, and if there is a gap of the wire diameter of the coil spring 104 in the front, the coil spring 104 is inserted into the gap to clamp the coil spring 104 so that it cannot move in the radial and axial directions. Hold.

At this time, when the coil spring 104 is a small coil spring 104a having a small outer diameter, as shown in FIG. 12A, the small coil spring 104a is provided with guide surfaces 43a, 43b and locking claws. 44a,
When the coil spring 104 has a large outer diameter while the outer diameter is held by 44b, as shown in FIG. 12 (b), the large coil spring 104b has guide surfaces 43a and 43b. And the outer diameter is retained by the locking claws 44a and 44b,
The outer diameter of the large coil spring 104b is pressed by the pair of pressing claws 48a and 48b, and the falling is prevented.

Then, with the coil spring 104 prevented from moving in the axial direction by the plurality of locking claws 44a and 44b, as shown in FIG.
Drive the air cylinder 51 of No. 4 and shock absorber 0
By pushing up and moving up the moving board 23 holding 01, the coil spring 104 mounted on the shock absorber 001 is compressed. Then, the upper seat 018, the insulator 020 and the like are attached to the upper part of the coil spring 104, and the upper seat clamp mechanism 15
Holds the upper sheet 018. In this state, the horizontal moving plate 56 is moved by the air cylinder 57 to position one of the nut runners 68 and 69 of the shaft fastening mechanism 17 at a predetermined position. Then, one of the nut runners 68, 69 is driven to drive the piston rod 01.
The nut 021 is fastened to the screw portion of No. 5.

In this way, the shock absorber 001
When the coil spring 014 is assembled to the nut runners 68 and 69, the nut runners 68 and 69 retreat, the upper seat clamp mechanism 15 releases the upper seat 018, and the spring compression mechanism 14 releases the coil spring 014. Then, the moving board 23 is lowered, and the shock absorber 001 is transferred from the moving board 23 to the payout table 78 by the strut payout mechanism 18 and carried out.

[0045]

As described above in detail with reference to the embodiments, according to the spring holding device of the present invention, the pair of holding arms having the guide surface for holding the outer diameter of the coil spring is formed at the tip end portion thereof. Pivotally attached to the main body so as to be rotatable synchronously by the drive means, a plurality of locking claws arranged in parallel along the axial direction of the coil spring are pivotally attached to the pair of holding arms,
At the tip of the locking claw, a locking projection that penetrates the inner diameter side of the coil spring is formed, and the biasing member biases the locking projection in the inner diameter side of the coil spring. The guide surface holds the outer diameter of the coil spring, and the locking claws enter the inner diameter side of the coil spring, so that the coil spring can be stably and reliably held, and the workability of assembling the spring is improved. be able to.

Further, according to the spring holding device of the present invention, since the pair of holding claws for holding the outer diameter of the coil spring are provided at the distal end portions of the pair of holding arms, the pair of holding arms are arranged in accordance with the outer diameter of the coil spring. The presser pawl can selectively function to cope with various coil springs, and even if the coil springs are inclined,
The outer diameter of the coil spring can be pressed by the pair of pressing claws, and the coil spring can be prevented from falling.

Further, according to the spring mounting apparatus of the present invention, the support shaft is held by the clamp means, and the outer diameter of the coil spring whose one end is held by the first disc is held by the spring holding means. By compressing the coil spring in the axial direction by the spring compressing means, holding the other end of the coil spring by the second disc, and fixing one end of the support shaft to the second disc by the fixing means. Since the coil spring is assembled, the coil spring can be stably and easily assembled, and the workability of assembling the spring can be improved.

Further, according to the spring assembling apparatus of the present invention, a plurality of spring holding means are provided in parallel along the axial direction of the coil spring on the pair of holding arms for holding the outer diameter of the coil spring, and the tip ends thereof are arranged. A pair of locking claws whose parts can enter the inner diameter side of the coil spring are provided,
Since the pair of holding arms is provided with a pair of presser pawls that selectively lock according to the outer diameter of the coil spring, the outer diameter of the coil spring is held by the holding arms, and By intruding into the inner diameter side of the coil spring and holding it, the coil spring can be securely held, and the pair of presser pawls selectively function according to the outer diameter of the coil spring. It can be applied to various coil springs.

[Brief description of the drawings]

FIG. 1 is a schematic view of a spring holding device according to an embodiment of the present invention.

FIG. 2 is a perspective view of a main part of a spring holding device according to this embodiment.

FIG. 3 is a front view of a spring assembly device to which the spring holding device of the present invention is applied.

FIG. 4 is a plan view of a spring assembling device according to the present embodiment.

FIG. 5 is a bottom front view of the spring assembling device.

FIG. 6 is a bottom side view of the spring assembling device.

FIG. 7 is a plan view of a strut-type shock absorber clamping device.

FIG. 8 is a plan view of a spring holding device.

FIG. 9 is a front view of the upper part of the spring assembling device.

FIG. 10 is a top side view of the spring assembling device.

FIG. 11 is a schematic view showing an operation of the spring assembling apparatus according to this embodiment.

FIG. 12 is a schematic view showing the operation of the spring assembling apparatus according to this embodiment.

FIG. 13 is a schematic view showing the operation of the spring assembling apparatus according to this embodiment.

FIG. 14 is a schematic view of a front suspension having a strut-type shock absorber.

[Explanation of symbols]

 11 Strut Clamp Mechanism 12 Strut Positioning Mechanism 13 Spring Clamp Mechanism 14 Spring Compression Mechanism 15 Upper Seat Clamp Mechanism 16 Shaft Extraction Mechanism 17 Nut Fastening Mechanism 18 Strut Discharging Mechanism 21 Frame 23 Moving Substrate 37a, 37b Holding Arm 39 Air Cylinder 43a, 43b Guide Surfaces 44a, 44b Locking claws 45a, 45b Locking protrusions 46a, 46b Tensile springs 48a, 48b Pressing claws 101 Strut type shock absorbers 113 Lower seats 114 Compression coil springs 118 Upper seats 121 Nuts

Claims (4)

[Claims] 1. A pair of holding arms having a base end pivotally attached to the main body and a guide surface for holding the outer diameter of the coil spring formed at the front end, and the pair of holding arms are rotated in synchronization with each other. A plurality of driving means and a plurality of holding arms are provided side by side along the axial direction of the coil spring, and a base end portion is pivotally attached to the pair of holding arms so that the distal end portion of the holding means enters the inner diameter side of the coil spring. And a biasing member for biasing the locking claws in a direction in which the locking projections penetrate into the inner diameter side of the coil spring. Spring holding device. 2. The spring holding device according to claim 1, wherein a pair of holding claws for holding the outer diameter of the coil spring is provided at the tip ends of the pair of holding arms. 3. A coil spring, one end of which is held by a first disc, is axially compressed, the other end of which is held by a second disc, and which is fixed to the center of the first disc. A spring assembling device for assembling the coil spring by fixing one end of a support shaft to the second circular plate,
Clamping means for holding the support shaft, spring holding means for holding the outer diameter of the coil spring whose one end is held by the first disc of the support shaft, and the coil in a state of being held by the spring holding means. A spring compression means for compressing the spring in the axial direction; and a fixing means for fixing the second disk holding the other end of the coil spring compressed by the spring compression means to the support shaft. Spring assembly device. 4. The spring assembling apparatus according to claim 3, wherein the spring holding means includes a pair of holding arms that holds the outer diameter of the coil spring, and the pair of holding arms along the axial direction of the coil spring. A plurality of locking pawls that are arranged side by side and the tip of which can enter the inner diameter side of the coil spring, and the tip of the pair of holding arms that are selectively provided according to the outer diameter of the coil spring. A spring assembly device having a pair of presser pawls that are locked to the spring.