JPH10109748A - Valve spring feeding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently feed a large number of valve springs necessary for the assembly of a valve system of a cylinder head to a valve spring assembly machine. SOLUTION: Clamp mechanisms 55a, 55b and holders 93a, 93b are provided on a lower part of a plurality of rows of magazines 51a, 51b. The holders 93a, 93b are movable from the receiving position to the take-out position. The clamp mechanisms 55a, 55b are provided with a first arm 61, a second arm 62 and a drive shaft 82. The drive shaft 82 is provided with a cam part 87. The first arm 61 is provided with a spring receiving part capable of supporting the valve spring located at the lowest part, and the valve spring is released when a cam follower rides over the cam part 87. The second arm 62 is provided with a holding part opposite to the side of the second valve spring from the bottom, and the side of the second valve spring from the bottom is held when the cam follower rides over the cam part 87.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve spring supply device used when assembling a valve spring to a cylinder head of an engine.

[0002]

2. Description of the Related Art In a process of assembling an engine, there is a process of assembling a valve spring of a valve train to a cylinder head. For example, the cylinder head 1 shown in FIG. 13 includes valve springs 3a and 3b on the intake valve 2a side and the exhaust valve 2b side, respectively. A valve spring assembling machine is used to automate the work of assembling the valve springs 3a and 3b. In a conventional valve spring assembling machine, a valve spring sequentially conveyed by a parts conveyor such as a parts feeder is assembled at a predetermined position of a cylinder head.

[0003]

The cylinder head of a multi-cylinder engine has a number of cylinders (for example, three or four cylinders).
The number of intake valves and the number of exhaust valves corresponding to are set in the upper part of each combustion chamber. In addition, in a cylinder head having two or more supply / exhaust valves per cylinder, the number of valve springs used per engine becomes considerably large, and the valve spring assembling machine accordingly handles a large number of valve springs. For example, four cylinders 16
In the case of a valve engine, in order to simultaneously assemble eight intake valve springs and eight exhaust valve springs simultaneously by a valve spring assembling machine, at least eight valve springs are required in a short time depending on the cycle time required for the assembly. It is necessary to supply the individual valve springs to the assembly machine.

However, in the case of using the valve spring supply means such as a parts feeder as in the above-described conventional apparatus, the ability to supply the valve spring at one time is limited, and the supply efficiency is poor, so that the cycle time becomes slow. was there.
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a valve spring supply device capable of efficiently supplying a large number of valve springs necessary for assembling a valve operating mechanism of a cylinder head to a valve spring assembling machine.

[0005]

In order to achieve the above object, the present invention provides a valve spring supply apparatus which can accommodate a plurality of valve springs stacked in an axial direction and can drop the valve springs. And a valve spring receiving magazine provided below the magazine and capable of receiving the valve spring, and from a receiving position of the valve spring facing the opening of each magazine to a removing position on the valve spring assembling machine side. A reciprocally movable valve spring transfer holder, a transfer drive mechanism for reciprocating the transfer holder from the receiving position to the take-out position, and a transfer drive mechanism in the magazine when the transfer holder is located at the receiving position. And a clamp mechanism for dropping only the lowermost valve spring into the transfer holder. A first arm having a spring receiving portion at a lower end of the magazine, the first arm being displaceable between a stop position where the spring receiving portion can support the lowermost valve spring and a release position away from the valve spring; A second arm having a holding portion facing the second valve spring from the bottom, the holding portion being displaceable between a clamp position for holding the second valve spring and an unclamping position away from the valve spring; First by actuator
And a drive shaft reciprocally driven between the first position and the second position. When the drive shaft is at the first position, the first
Moving the arm to the stop position, displacing the second arm to the unclamping position, and disengaging the first arm when the drive shaft moves from the first position to the second position. The second arm is displaced to the clamp position while being held at the stop position, and when the drive shaft is moved to the second position, the first arm is held while holding the second arm at the clamp position. To the release position.

In the valve spring supply device having the above-described structure, when the drive shaft of the cam means is at the first position, the cam follower of the first arm is located between the cam portions, so that the first arm is positioned at the first position.
Since the arm is at the stop position, the spring receiving portion of the first arm supports the lowermost valve spring in the magazine from below. When the drive shaft moves in the direction of the second position, before the drive shaft reaches the second position, the cam follower of the second arm is disengaged from the cam portion, so that the second arm is displaced to the clamp position. The pressing portion of the second arm presses the side surface of the second valve spring from the bottom in the magazine. Therefore, the second valve spring is held.

When the drive shaft reaches the second position,
When the cam follower of the first arm rides on the cam portion, the first arm is displaced to the release position to release the lowermost valve spring, so that the lowermost valve spring falls and is transferred to the valve spring transfer holder. enter. Thereafter, as the holder advances to the take-out position, the holder moves below the valve spring assembling machine.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 2 shows a device 10 for assembling a valve spring. This equipment 10 is for attaching valve springs 3a and 3b to a cylinder head 1 (shown as an example in FIG. 13) constituting a part of an engine of an automobile or the like, and a work for supporting the cylinder head 1 at a predetermined position. The apparatus includes a positioning jig 11, a valve spring assembling machine 12, a valve spring supply device 13, and the like. This valve spring assembling machine 1
In 2, the following elevating units 28 corresponding to the number of cylinders (for example, four cylinders) of the cylinder head 1 are provided in parallel.

The work positioning jig 11 is provided on a base 16 and can swing about a horizontal axis 17 within a range of an angle θ (an angle formed between an intake valve and an exhaust valve).
When the cylinder head 1 is turned to the first position shown in FIG. 2 by the actuator 18 for angle switching, the intake valve is oriented vertically, and when the cylinder head 1 is turned to the second position. The exhaust valve is oriented vertically. The cylinder head 1 mounted on the positioning jig 11 can be fixed at the first position and the second position by a clamp mechanism (not shown).

As shown in FIGS. 2 and 3, the valve spring assembling machine 12 is mounted on a horizontally extending rail 22 provided on a base 21 and is driven by a driving means such as a cylinder mechanism (not shown). Is configured to be movable in the left-right direction. The valve spring assembling machine 12 is mounted on the rail 2
2, a movable base 25 mounted on the movable base 25, a vertically extending support structure 26 provided on the movable base 25, and a support structure 2
6, a vertically extending guide rail 27, an elevating unit 28 that moves up and down along the guide rail 27,
An actuator 29 such as a fluid cylinder for driving the elevating unit 28 and an intermediate stopper mechanism 30 mounted on the support structure 26 are provided.

As shown in FIG. 3 and the like, the lifting unit 28 includes a lifting base 35 connected to an output end 29 a of an actuator 29 and a frame 36 fixed to the lifting base 35.
And a vertical movable shaft 37 provided on the frame 36 so as to be movable up and down, a spring 38 for urging the movable shaft 37 downward, and a sleeve 39 through which the movable shaft 37 is inserted.
And a locking mechanism 4 provided at the lower end of the movable shaft 37.
0 and so on.

The intermediate stopper mechanism 30 has a stopper member 45 that advances and retreats in the horizontal direction with respect to the support structure 26, and an actuator 46 such as a fluid cylinder that drives the stopper member 45 in the horizontal direction. When the stopper wall 47 is moved forward to the position shown in FIG. 3, the stop wall 47 faces directly below the receiving portion 48 of the elevating base 35, and stops when the stopper member 45 is retracted (moved rightward in FIG. 3) by the actuator 46. The wall 47 is the receiving part 4
By retracting rearward from directly below 8, the lifting unit 28 can descend to the lower end.

As shown in FIGS. 1 and 4, the valve spring supply device 13 has a magazine unit 51 on a substrate 50. The magazine unit 51 is a two-row, eight-column (16 in total) valve spring storage magazine 51 erected on the substrate 50.
a, 51b. For example, in FIG. 1, one magazine 51a located on the left side accommodates a valve spring 3a for an intake valve, and the other magazine 51b located on the right side accommodates a valve spring 3b for an exhaust valve. These magazines 51
As shown in FIG. 4 and the like, four sets of a and 51b are arranged in the left-right direction in such a manner that two sets adjacent to each other in the left-right direction.

Each of the magazines 51a and 51b has a cylindrical shape. These magazines 51a and 51b are provided with a valve spring 3
a, 3b, and each magazine 5
The valve springs 3a, 3b can be inserted into the magazine from the upper end openings of 1a, 51b. Magazines 51a, 51b
The lower end openings 52a, 52b (see FIG. 1) are opened on the lower surface side of the substrate 50, and the valve springs 3a, 3b can be dropped below the substrate 50 from the openings 52a, 52b. .

In FIG. 1, one clamp mechanism 55a is provided near the lower portion of one magazine 51a. The other clamp mechanism 5 is provided near the lower portion of the other magazine 51b.
5b is provided. These clamping mechanisms 55a,
Since 55b has a common structure, one clamp mechanism 55a will be described below as a representative.

The clamp mechanism 55a includes a first arm 61 swingable about a support shaft 60 extending in the horizontal direction, and a pair of left and right second arms 62, 62. As shown in FIG. 9, a pair of left and right spring receiving portions 65 is provided on the lower end side of the first arm 61. The pair of spring receiving portions 65 protrude toward the lower end openings 52a of the two adjacent left and right magazines 51a, and can simultaneously support the two left and right valve springs 3a located at the lowest positions in the two left and right magazines 51a. It has become. A cam follower 66 is provided on the upper end side of the first arm 61.

The first arm 61 can be displaced by a cam means described later between a stop position shown in FIG. 10 and a release position shown in FIG. At the stop position, the spring receiving portion 65 projects to a position at which the lower surface of the lowermost valve spring 3a in the magazine can be supported, and at the release position (FIG. 12), the spring receiving portion 65 separates from the lower surface of the valve spring 3a. It has become.

As shown in FIG. 10, a holding portion 70 is provided at the upper end of the second arm 62 so as to face the side surface of the second lowest valve spring 3a in the magazine. As shown in FIG. When the projection 70 projects into the magazine, the side surface of the second valve spring 3a from the bottom in the magazine can be pressed. A cam follower 71 is provided at the lower end of each of the pair of second arms 62. The second arm 62 can be displaced by an after-mentioned cam means between an unclamping position shown in FIG. 10 and a clamping position shown in FIG. At the unclamping position, the holding portion 70 separates from the side surface of the valve spring 3a,
At the clamp position, the pressing portion 70 presses the side surface of the second valve spring 3a.

A tension spring 75 extends between the first arm 61 and the pair of second arms 62, and the elasticity of the tension spring 75 urges the first arm 61 toward the stop position. At the same time, the second arm 62 is urged in the direction of the clamp position.

As shown in FIG. 4 and the like, a drive shaft 82 extending in the horizontal direction is provided between a pair of left and right support members 80 and 81 provided on the substrate 50. The drive shaft 82 is freely movable in the horizontal direction, and is moved leftward from the first position shown in FIG. 4 to the second position by a direct-acting actuator 83 such as a fluid cylinder provided at one end of the drive shaft 82. That is, it is possible to reciprocate the distance of the stroke S in FIGS. A return spring 85 is provided on the other end of the drive shaft 82. Return spring 8
Numeral 5 urges the drive shaft 82 rightward in FIG. 4 (toward the first position).

The drive shaft 82 is formed with four pairs of cam portions 87 having a shape like an abacus ball at a predetermined pitch. These cam portions 87 constitute cam means for driving the cam follower 66 of the first arm 61 and the cam follower 71 of the second arm 62. When the drive shaft 82 is at the first position, the cam portion 87 shown in FIG. 10, the cam follower 6 of the first arm 61 as shown in FIG.
6 is located between the pair of cam portions 87, 87, the first arm 61 is displaced to the stop position by the elastic force of the spring 75, and the cam follower 71 of the second arm 62 is connected to the cam portion 87. The second arm 62 is displaced to the release position by riding on the vehicle.

Further, when the drive shaft 82 is in the process of moving from the first position to the second position, the cam follower 71 of the second arm 62 is located between the cam portions 87, 87 as shown in FIG. As a result, the second arm 62 is displaced to the clamp position by the elastic force of the spring 75, and when the drive shaft 82 reaches the second position, the cam follower 66 of the first arm 61 is moved to the cam portion as shown in FIG. First by riding the 87
The arm 61 is displaced to the release position.

A transfer mechanism 90 is provided below the substrate 50. The transfer mechanism 90 has a slide table 92 movable along a pair of left and right guide rails 91 (shown in FIG. 4). The slide table 92 is provided with valve spring transfer holders 93a and 93b at a pitch (2 rows × 8 columns) according to the arrangement of the magazines 51a and 51b. Each of the holders 93a, 93b has a cylindrical shape, has an opening capable of receiving the valve springs 3a, 3b from above, and has an inner diameter capable of accommodating the valve springs 3a, 3b.

The slide table 92 is shown in FIGS.
And the like, a fluid cylinder 95 and a transfer drive mechanism 97 using a link 96 and the like make it possible to reciprocate at a predetermined stroke from a receiving position shown by a solid line in FIG. 1 to a removing position shown by a two-dot chain line. . The receiving position of the slide table 92 is regulated by the stopper 100 on the retreat side, and the take-out position is regulated by the stopper 101 on the forward side. In the receiving position, the holders 93a and 93b face directly below the lower end openings 52a and 52b of the magazines 51a and 51b.
3b is located directly below the movable shaft 37 of the valve spring assembling machine 12. The valve spring assembling machine 12 can be switched to the position A or the position B shown in FIG. 2 by a drive mechanism (not shown).

Next, the operation of the valve spring assembling equipment 10 provided with the valve spring supply device 13 having the above configuration will be described. Prior to the assembling operation, for example, the valve springs 3a and 3b are housed in all the magazines 51a and 51b, for example, eight in total (64 in total). The drive shaft 82 of the cam means is in the first position. The slide table 92 is in the receiving position shown in FIG. 1, and the holders 93a and 93b are empty. The elevating unit 28 of the valve spring assembling machine 12 is raised to the upper end.

After the cylinder head 1 is carried into the work positioning jig 11 by a transfer device (not shown), the cylinder head 1 is rotated by the actuator 18 to a first angle. In this state, for example, the intake valve is oriented vertically. The valve spring assembling equipment 10 is configured to assemble the valve spring 3a on one side and then assemble the valve spring 3b on the other side.

First, the assembly of the valve spring 3a on one side will be described. As shown in FIGS. 7 and 10, when the drive shaft 82 of the one-side clamp mechanism 55a is at the first position, the cam follower 66 of the first arm 61 moves to the cam portions 87, 87.
Since the first arm 61 is located at the stop position by being located therebetween, the spring receiving portion 65 supports the lowermost valve spring 3a in the magazine 51a from below.

When the drive shaft 82 is moved from the first position to the second position by the actuator 83, before the drive shaft 82 reaches the second position, as shown in FIG. When the cam follower 71 is disengaged from the cam portion 87, the second arm 62 is displaced to the clamp position, and the pressing portion 70 presses the side surface of the second lowest valve spring 3a. Therefore, the second valve spring 3a from the bottom is held.

When the drive shaft 82 reaches the second position, the cam follower 66 of the first arm 61 as shown in FIG.
Rides on the cam portion 87, the first arm 61
Is displaced to the release position to release the lowermost valve spring 3a, so that the lowermost valve spring 3a falls and enters the holder 93a.

Thereafter, as the slide table 92 advances to the take-out position by the transfer drive mechanism 97, the holder 93a moves directly below the movable shaft 37 of the valve spring assembling machine 12. In this case, the valve spring assembling machine 12 is driven by a driving mechanism (not shown) to a position A shown in FIG.
That is, the shaft 37 is moved so as to be located directly above one of the holders 93a.

In the above state, the actuator 29 of the assembling machine 12 lowers the elevating unit 28 to a position (an intermediate position in the vertical direction) where the elevating unit 28 abuts against the stop wall 47, thereby locking the lower end portion of the movable shaft 37. Is inserted into the valve spring 3a in the holder 93a, and the locking mechanism 40
Thus, the valve spring 3a is held so as not to fall. Thereafter, when the lifting unit 28 is raised by the actuator 29, the locking mechanism 40 and the valve spring 3a are moved above the holder 93a, and the slide table 92 is returned to the receiving position shown in FIG.

After that, after the stopper member 45 (shown in FIG. 3) is retracted by the actuator 46 to a position where the lowering of the elevating unit 28 is not hindered, the elevating unit 28 is lowered to the lower end by the actuator 29 for elevating drive. . When the movable shaft 37 descends to the vicinity of the descending end, the lower end surface of the movable shaft 37 hits the upper end of the intake valve of the cylinder head 1 and is prevented from descending any further. When the elevating unit 28 further descends,
The valve spring 3a held by the locking mechanism 40 until then is pushed downward by the sleeve 39, so that the valve spring 3a is inserted into the cylinder head 1 at the position where the intake valve is assembled. After that, the lifting unit 28 is connected to the actuator 2.
9 rises to the rising end.

The lifting unit 2 of the valve spring assembling machine 12
Reference numeral 8 denotes a number of cylinder heads 1 corresponding to the number of cylinders to be operated. That is, in the case of a four-cylinder engine, four sets (eight in total) of the elevating units 28 perform the above-described elevating operation, and simultaneously assemble eight valve springs into the cylinder head at a time. Is a state in which three sets (six in total) of the elevating units 28 perform the above elevating operation, and simultaneously assemble six valve springs to the cylinder head at a time. With such a configuration, it is possible to respond to a change in the number of cylinders.

After the simultaneous assembly of the valve spring 3a for the intake valve is completed as described above, the work positioning jig 11
The cylinder head 1 is rotated to a second angle by a switching actuator 18 (shown in FIG. 2). In this state, for example, the exhaust valve is oriented vertically. At this time, the slide table 92 has returned to the receiving position, and the valve spring 3b for the exhaust valve has been dropped into the holder 93b on the other side of the slide table 92 by the clamp mechanism 55b on the other side. The operation of the clamp mechanism 55b on the other side is the same as that of the clamp mechanism 55a on the one side.

Then, when the slide table 92 advances again to the take-out position by the transfer drive mechanism 97, the holder 93b moves directly below the movable shaft 37 of the valve spring assembling machine 12. In this case, the valve spring assembling machine 12 is moved by a drive mechanism (not shown) to a position B shown in FIG.
That is, the shaft 37 is moved by the distance P so that the shaft 37 is located directly above the holder 93b.

In the above state, the actuator 29 of the valve spring assembling machine 12 lowers the elevating unit 28 to a position (an intermediate position in the vertical direction) where the elevating unit 28 abuts against the stop wall 47. It is inserted into the valve spring 3b and is held by the locking mechanism 40 so that the valve spring 3b does not fall. And the actuator 29
The lifting unit 28 is raised by the
0 and the valve spring 3b move upward, and the slide table 92 returns to the receiving position shown in FIG.

Thereafter, the stopper member 45 (shown in FIG. 3)
Is retracted by the actuator 46 to a position where the lowering of the elevating unit 28 is not hindered, and the elevating unit 28 is further lowered to the lower end by the elevating drive actuator 29. When the movable shaft 37 descends to the vicinity of the descending end, the lower end surface of the movable shaft 37 hits the upper end of the exhaust valve of the cylinder head 1 and is prevented from descending any further. When the elevating unit 28 further descends, the valve spring 3b previously held by the locking mechanism 40
Is pushed downward by the sleeve 39,
The valve spring 3b is inserted into the cylinder head 1 at the position where the exhaust valve is assembled. Thus, the simultaneous assembly of the valve springs 3b of each cylinder is completed.

Thereafter, the lifting unit 28 is raised by the actuator 29 to the rising end. After the cylinder head 1 is returned to the neutral position by the actuator 18 of the work positioning jig 11 (shown in FIG. 2), the cylinder head 1 is unclamped, and the cylinder head 1 can be transported to the next step.

[0039]

According to the first aspect of the present invention, when a large number of valve springs need to be assembled to a cylinder head at the same time as in a multi-cylinder engine, the number of valve springs corresponding to the number of cylinders is increased. The valve spring can be efficiently supplied to the valve spring assembling machine, and the cycle time required for assembling the valve spring can be reduced. With such a valve spring supply device, the number of the first springs corresponding to the number of cylinders is determined along the drive shaft extending in the horizontal direction.
By arranging the arm and the second arm, the cam portion, the magazine, the holder, and the like, a large number of valve springs for a multi-cylinder engine can be efficiently supplied to the valve spring assembling machine.

According to the clamp mechanism of the present invention, two valve springs located at the lowermost position in a pair of right and left magazines can be simultaneously supported by one first arm. 2 left and right depending on the cam part
The individual valve springs can be dropped into the holder at the same time. Further, the pair of left and right second arms operate independently of each other by the cam portion, and separately press the side surfaces of the two left and right valve springs located second from the bottom, so that the lowermost valve spring is dropped. In addition, the second left and right two valve springs can be reliably held without being affected by variations in the storage state.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a valve spring supply device according to an embodiment of the present invention.

FIG. 2 is a side view of an installation facility including the valve spring supply device shown in FIG.

FIG. 3 is a side view showing a partial cross section of a valve spring assembling machine of the assembling equipment shown in FIG. 2;

FIG. 4 is a front view showing the valve spring supply device shown in FIG. 1 in a partial cross section.

FIG. 5 is a plan view of the valve spring supply device shown in FIG. 1;

FIG. 6 is a plan view showing an operation mode of a delivery mechanism of the valve spring supply device shown in FIG. 1;

FIG. 7 is a front view showing a part of cam means of the valve spring supply device shown in FIG. 1;

FIG. 8 is a plan view showing a part of a drive shaft and an arm of the valve spring supply device shown in FIG. 1;

FIG. 9 is a bottom view showing the magazine and a part of the first arm of the valve spring supply device shown in FIG. 1;

FIG. 10 is a longitudinal sectional view of a clamp mechanism of the valve spring supply device shown in FIG. 1;

FIG. 11 is a sectional view showing a state where a second arm of the clamp mechanism shown in FIG. 10 is displaced.

FIG. 12 is a sectional view showing a state where a first arm of the clamp mechanism shown in FIG. 10 is displaced;

FIG. 13 is a sectional view showing a part of a cylinder head and a valve train;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Cylinder head 3a, 3b ... Valve spring 10 ... Equipment for assembling valve spring 12 ... Valve spring assembling machine 13 ... Valve spring supply device 51a, 51b ... Magazine 55a, 55b ... Clamp mechanism 61 ... 1st arm 62 ... Second arm 65 Spring receiving part 66 Cam follower 70 Holding part 71 Cam follower 82 Drive shaft 87 Cam part 90 Transfer mechanism 93a, 93b Transfer holder 97 Transfer drive mechanism

Claims (3)

[Claims] A valve spring accommodating magazine having an opening capable of accommodating a plurality of valve springs stacked in the axial direction and capable of dropping the valve springs; and a valve spring provided below the magazine for receiving the valve springs. A valve spring transfer holder capable of reciprocating from a receiving position of the valve spring facing the opening of each magazine to a take-out position on the valve spring assembling machine side, and moving the transfer holder from the receiving position. A transfer drive mechanism for reciprocating over the take-out position, and a clamp mechanism for dropping only the lowermost valve spring in the magazine into the transfer holder when the transfer holder is located at the receiving position. The clamp mechanism has a spring receiving portion at a lower end of the magazine, and the spring receiving portion is the lowermost portion. A first arm displaceable between a stop position capable of supporting the first valve spring and a release position away from the valve spring; and a pressing portion facing the second lowest valve spring in the magazine and the pressing portion. A second arm displaceable between a clamp position for holding down the second valve spring and an unclamping position away from the valve spring; and a drive shaft reciprocally driven between the first position and the second position by an actuator. This drive shaft is the first
The first arm is displaced to the stop position and the second arm is displaced to the unclamping position, and the drive shaft is moved from the first position to the second position.
The second arm is displaced to the clamp position while holding the first arm at the stop position when the drive shaft is moved toward the second position, and the second arm is moved when the drive shaft is moved to the second position. A valve means for displacing the first arm to the release position while holding the two arms in the clamp position. 2. The clamp mechanism according to claim 1, wherein the first arm is rotatable about a horizontal support shaft provided near a lower portion of the pair of left and right magazines, and is rotatable about the support shaft. A pair of left and right second arms, and a spring for urging each of the arms toward the stop position and the clamp position. The first arm protrudes toward the pair of left and right magazines. Wherein the pair of second arms are displaceable independently of each other over the clamped position and the unclamped position, and the cam means is arranged such that the drive shaft extending in the horizontal direction is the first shaft. And a pair of cam portions for displacing the pair of second arms to the unclamping position when the pair of second arms are at the position, and the cam portions move the drive shaft toward the second position. Wherein the pair of second arms are respectively displaced to the clamp position, and the first arm is displaced to the release position when the drive shaft moves to the second position. The valve spring supply device according to claim 1. 3. A plurality of pairs of said pair of magazines, a pair of valve spring transfer holders, a first arm, a pair of second arms and a cam portion are arranged in the direction of cylinder arrangement according to the number of cylinders of the cylinder head. The valve spring supply device according to claim 2, wherein the plurality of cam portions are provided on one drive shaft.