JP2001162229A - Spring separation apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically separate a plurality of entangled springs one by one. SOLUTION: A spring separation apparatus for separating a plurality of entangled compression springs 10 one by one is equipped with a rotary drum 4 having a plurality of space parts A-C radially partitioned with respect to a rotary shaft 5. The rotary drum 4 has first space parts A-C having a lid member 7 in order to house the compression springs 10, the passing holes 11A-11C formed on the partition walls 6A-6C of the space parts 11A-11C order to gradually reduce the compression springs 10, the final space part C having passing holes 11A-11C which have sizes sufficient to pass at least one compression spring 10 and a discharge port 8 discharging the compression springs 10 passed through the passing holes 11A-11C of the space part C. By this constitution, the compression springs 10 large at first can be displaced to small compression springs 10 by the passing holes 11A-11C different in caliber and, finally, a plurality of the compression springs 10 can be guided to the discharge port 8 one by one.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to a case where coil springs such as a torsion spring, a compression spring, and a tension spring, which are entangled and clumped together, are automatically separated one by one. It relates to a suitable spring separating device.

More specifically, a plurality of spaces are provided by radially dividing a rotary drum, a spring is housed in a first space, a lid is closed, and the drum is rotated to form a partition in each space. The number of the springs is gradually reduced by the provided through holes, and one of the springs is passed through one of the springs by the through hole provided in the last space portion.
One spring can be automatically separated.

[0003]

2. Description of the Related Art In recent years, coil springs such as small torsion springs, compression springs, and extension springs have been increasingly used in electronic equipment, stationery, precision machinery, and the like. These springs are formed by forming a spring material such as spring steel, piano wire, phosphor bronze, etc. into a coil shape.

[0004] For example, a torsion spring, a tension spring, or the like is used to bias a cassette storage cover such as a cassette recorder, and a mechanical component such as a mechanical pencil or a ball-point pen is used to bias the writing component container therein. At that time,
A compression spring is used. In the manufacturing process of a cassette recorder, a ball-point pen, and the like, each spring is often stored in a storage box dedicated to the spring. In this type of spring, a coil portion of one spring is entangled with a coil portion of another spring, and a plurality of springs are often clustered together.

[0005]

In such a case, each spring is separated from a plurality of tangled springs depending on human labor. For this reason, there is a problem that it takes time and effort to separate the springs one by one from the massive springs that are unintentionally entangled, and that much time is required to separate the springs.

Accordingly, the present invention has been made to solve such a conventional problem, and proposes a spring separating apparatus capable of automatically separating each spring from a plurality of tangled springs. It is the purpose.

[0007]

In order to solve the above-mentioned problems, a spring separating device according to the present invention is a spring separating device for separating each spring from a plurality of tangled springs,
A rotating drum having a plurality of spaces radially partitioned with respect to the rotation axis, the rotating drum having an initial space having a lid for housing a spring, and a spring for gradually reducing the number of springs , A passage hole provided in a partition portion of each space portion, a last space portion having at least a passage hole large enough to pass one of the springs, and a spring having passed through the passage hole of the last space portion. And a discharge port for discharging the gas.

According to the present invention, when each spring is separated from a plurality of entangled springs, the first one of the plurality of spaces radially divided with respect to the rotation axis of the rotary drum. The drum is rotated slowly in a fixed direction, for example, by closing a lid by storing a spring. As a result, the number of the springs is gradually reduced by the through holes provided in the partition portions of the respective spaces, and one of the springs passes through the through holes provided in the last space and is discharged from the discharge port. You.

[0009] Therefore, the initially large spring can be gradually displaced into smaller springs by the passage holes having different diameters, and finally a plurality of springs can be guided to the discharge ports one by one. As a result, 1
Each spring can be automatically separated.

[0010]

Next, an embodiment of a spring separating apparatus according to the present invention will be described in detail with reference to the drawings. (1) First Embodiment FIG. 1 shows a spring separating device 1 according to a first embodiment of the present invention.
It is a perspective view of the partial crushing which shows the example of a structure of 00. FIG. 2 is a partially broken top view showing an example of the configuration (inside the drum). FIG. 3 is a partially crushed cross-sectional view showing an example of the configuration (position of the passage hole).

In this embodiment, the rotary drum is radially partitioned to provide a plurality of spaces, a spring is housed in the first space, the lid is closed, and the drum is rotated to partition each space. The passing holes provided in the portion gradually reduce the number of springs, and the passing holes provided in the last space portion allow one of the springs to pass through. It can be automatically separated.

The spring separating apparatus 100 according to the present invention separates each spring 10 from a plurality of tangled springs 10. The spring separating apparatus 100 shown in FIG. 1 includes a flat base 1 having a predetermined thickness and a size of about 450 mm × 600 mm in length × width. A trapezoidal bearing support 2 is firmly mounted on the base 1 with a flathead screw or the like.

The bearing portion 2 shown in FIG.
And a cylindrical rotary drum 4 is attached to the front side thereof. The rotating drum 4 has a diameter of about 300 mm and a length of about 150 mm. Rotating drum 4
A detachable front cover 9 having a discharge port 8 for inspection is detachably attached to the front of the partition wall 6A. When the front cover 9 is opened, a partition wall 6A for separating the spaces A to C is provided. ~ 6C
Has been made visible. Base 1, bearing support 2
The rotating drum 4 is made of metal such as iron or brass.

The rotating drum 4 has a rotating shaft 5 in a cylindrical direction shown in FIG. 2, and the rotating shaft 5 is fitted into the bearing portion 3. The rotating drum 4 is provided with a plurality of spaces A to C by radially dividing the inside of the drum shown in FIG.

In this example, the rotary drum 4 is divided into three by partition walls 6A to 6C which are an example of a partition portion. Here, the angle formed between the partition wall 6A and the partition wall 6B is θ.
11, and the angle formed between the partition wall 6B and the partition wall 6C is θ1.
2, and the angle formed between the partition wall 6C and the partition wall 6A is θ13.
Then, the inside of the drum is divided into three space portions A to C with θ11 = θ12 = θ13 = 120 °.
An opening 4A is provided in the outer peripheral portion of the first space A, and the spring 10 is taken in and housed inside the drum.
In the first space A, a cover 7 is provided so as to cover the opening 4A.
The opening 4A is closed so that the spring 10 does not protrude to the outside.

In the case where the lid 7 of the rotary drum 4 shown in FIG. 3 is located at the upper position, the position of the partition wall 6A which separates the first space A and the last space C is hereinafter referred to as a reference. Let it be point P. The spring 10 to be separated is a small torsion spring, a compression spring, a tension spring, or the like.
Of course, it is not limited to these.

The partition wall 6B between the space A and the space B shown in FIG.
A is provided, and a partition wall 6C between the space B and the space C is provided.
Is provided with a passage hole 11B in order to further reduce the number of springs 10. A passage hole 11C is provided in the last space portion C in the direction of the rotation axis, and a discharge port 8 is provided in the center portion of the shaft.
Is provided. In this example, the through holes 11A and 11B and the discharge path 1 that communicate the respective space portions B and C
The through hole 11C reaching 2 has a circular or elliptical shape, and is formed gradually smaller from the first space A to the last space C.

Here, a passage hole 11A provided in the partition wall 6B is provided.
Is an opening width of d11, and a passage hole 11 provided in the partition wall 6C.
The opening width of B is d12, and the discharge path 12 of the last space C is
Assuming that the opening width of the through hole 11C leading to is d13, d11
>D12> d13. This is to reduce the number of springs 10 inside the drum. Spring 1
However, when the diameter of the spring is about 2 mm, d11 is about 30 mm and d12 is 10 mm
And d13 is about 3 mm. Passage hole 11A
The shape of ~ 11C is not limited to a circular shape or an elliptical shape, but may be a polygonal shape.

Each of the spaces A to C has a through hole 11A to 11
The spring 10 has a moderately inclined surface toward C, so that the spring 10 can easily move to the adjacent space B, space C, and the discharge path 12. In addition, the passage hole is not provided in the partition wall 6A between the first space part A and the last space part C. This is because the spring 10 circulates inside the drum.

FIG. 4 is a partially broken side view showing a configuration example (discharge path) of the spring separating device 100. The last space C shown in FIG. 4 is provided with a passage hole 11C having a size that allows at least one of the springs 10 to pass therethrough. Last space C
The discharge path 12 extends from the passage hole 11C to the discharge port 8.
Is provided, and the spring 10 that has passed through the passage hole 11C is guided to the outside. The discharge path 12 is provided in a funnel shape on an extension of the rotary shaft 5 of the rotary drum 4. This is drain 1
This is because the separated spring 10 is guided to the discharge port 8 of the rotary drum 4 by using the slope generated from the inside to the outside of the rotating drum 2 and slides, and at the same time, is discharged to the outside.

A gear box 13 and a motor 14 are mounted on the rear side of the bearing support 2 shown in FIG. 4, and the speed of the motor 14 is changed by a predetermined gear ratio (for example, 30: 1). The rotating drum 4 rotates at a low speed. A motor that rotates by AC or DC is used as the motor 14. In this example, the rotating drum 4 is rotated by a motor 14 in a certain direction. Of course, the rotating drum 4 may be rotated in a fixed direction, or may be stopped, and an intermittent operation may be performed such that the rotation is repeated. A control box 15 is mounted on the base 1. A speed control volume 16 and a power switch 17 are mounted on the front panel of the control box 15.
The rotation speed can be freely varied.

FIG. 5 is a block diagram showing an example of the internal configuration of the control box 15 applied to the spring separating device 100. A motor control device 18 is provided inside the control box 15 shown in FIG. 5, and when the AC motor 14 is used, when the power switch 17 is turned on,
For example, the rotation speed of the motor 14 is controlled by a known variable voltage variable frequency (VVVF) method. Motor 14
The number of revolutions of the motor is adjusted by adjusting the volume 16 to vary the power supply frequency.
It changes to 00 to 1500 rpm. When the DC motor 14 is used, when the power switch 17 is turned on,
For example, the rotation speed of the motor 14 is controlled by a known variable voltage method. The rotation speed of the motor 14 is changed by adjusting the volume 16 to vary the motor terminal voltage.

It should be noted that a microcomputer may be built in the motor control device 18 to perform a fuzzy operation for giving an appropriate acceleration and deceleration to the rotating drum 4. Further, vibration generating means (not shown) may be provided below the base 1 to apply vibration to the rotating drum 4. By these special operations, the springs 10 housed in the spaces A to C can be released using inertia.

FIGS. 6A to 6C show a spring 1 such as a compression spring, a tension spring, or a small torsion spring to be separated.
0 shows an example of the shape. These springs 10 are formed by processing a spring material such as spring steel, piano wire, or phosphor bronze into a coil shape.

Next, an operation example of the spring separating device 100 according to the first embodiment will be described. FIGS. 7 to 9 are conceptual diagrams showing examples of the internal state (Nos. 1 to 3) of the rotary drum 4 according to the operation of the spring separating device 100. In this example, when each compression spring 10 is separated from a plurality of compression springs which are unintentionally entangled and clumped, the compression spring 10 is stored in the first space A shown in FIG. The cover 7 is closed, and then the power switch 17 shown in FIG. 5 is turned on. Then, for example, a motor rotation speed of 1500 rpm is set to 30: 1.
It is assumed that the rotation speed of the rotary drum 4 is reduced to 50 rpm, and slowly rotated clockwise in a constant direction at 50 rpm.

On the premise of this, when the rotation proceeds from the reference point P and the rotation angle φ reaches 120 ° as shown in FIG. 7A, the partition wall 6A comes to be located directly below. When the rotation further proceeds, from the reference point P, the rotation angle φ reaches 150 ° as shown in FIG. 7B, and further, when the rotation angle φ reaches 210 ° as shown in FIG. The compression spring 10 limited by the diameter of the passage hole 11A of the partition wall 6B moves to the adjacent space B.

Further, as the rotation proceeds, the reference point P
When the rotation angle φ reaches 330 °, the small mass of the compression spring 10 that has moved to the space B is further released and starts moving to the last space C as shown in FIG. Then, when the rotating drum 4 advances to the second rotation as shown in FIG. 8B and the rotation angle φ reaches 30 ° from the reference point P, the compression spring 10
Only the few compression springs 10 separated from the small lump are finished moving to the last space C. Furthermore,
When the rotation proceeds and the rotation angle φ reaches 90 ° from the reference point P, as shown in FIG.
Approximately several compression springs 10 that have moved to contact the partition wall 6A.

Further, as the rotation proceeds, the reference point P
As shown in FIG. 9, the rotation angle φ reaches 240 °, and further, FIG.
As shown in B, when the rotation angle φ reaches 300 °, the compression springs 10 separated into several pieces are guided to the discharge path 12 through the passage hole 11C of the last space C, and the discharge of the rotary drum 4 is performed. After passing through the outlet 8, it is dropped into an external receiving box 20. At the same time, the small mass of the compression spring 10 starts to move from the space A to the space B.

Further, as the rotation proceeds, the reference point P
When the rotation angle φ reaches 330 °, the small mass of the compression spring 10 that has moved to the space B is further released and starts moving to the last space C as shown in FIG. The small lumps of the spring are moved so as to gradually feed to the last space portion C while gradually decreasing. The compression spring 10 is placed in the receiving box 20.
Is entangled again, so that the power switch 17 is turned off when only the used amount is taken out.

As described above, according to the first embodiment, the passage holes 11A to 11A having different diameters are provided in the partition wall 6B, the partition wall 6C, and the portion of the last space C that reaches the discharge path 12.
By 1C, the compression springs 10 that were initially large can be gradually displaced to smaller compression springs 10, and finally a plurality of compression springs 10 can be guided to the outlet 8 one by one. Thereby, each compression spring 10 can be automatically separated from the plurality of entangled compression springs 10.

(2) Second Embodiment FIG. 10 is a partially crushed front view showing a configuration example of a spring separating device 200 as a second embodiment. 11 to 14
FIG. 7 is a conceptual diagram showing an example (parts 1 to 4) of an internal state of the rotating drum 40 relating to the operation of the spring separating device 200. In this example, when the angle between one partition wall of the space and the other partition wall of the space is defined as a wall angle θ, a plurality of spaces A
... To obtain a rotating drum 40 with a wall angle θ of 90 degrees.
° or less. Note that components having the same reference numerals as those in the first embodiment have the same functions, and a description thereof will be omitted.

The spring separating device 200 shown in FIG. 10 has a rotating drum 40 whose inside is divided into a star shape.
For example, the rotary drum 40 is provided with five spaces A to E by radially dividing the inside of the drum shown in FIG. 10 with respect to the rotary shaft 5 by five partition walls 6A to 6E.

Here, the angle between the partition wall 6A and the partition wall 6B is θ21, the angle between the partition wall 6B and the partition wall 6C is θ22, and the angle between the partition wall 6C and the partition wall 6D is θ23. , The angle formed between the partition wall 6D and the partition wall 6E is θ24, and the angle formed between the partition wall 6E and the partition wall 6A is θ.
If 25, then θ21 = θ22 = θ23 = θ24 = θ2
5 = 72 °.

An opening 40A is provided in the outer peripheral portion of the first space A in the same manner as in the first embodiment.
0 is taken in and stored inside the drum. A cover 7 is attached to the space A so as to cover the opening 40A, and the opening 4 is provided so that the spring 10 does not protrude to the outside.
A is used with the lid closed. Of course, the front lid 9 is also used with the lid closed. The case where the lid 7 of the rotary drum 40 is at the upper position, and where the partition wall 6A that separates the first space A and the last space E is located is referred to as a reference point Q below.

The partition walls 6B to 6E of the respective spaces A to E shown in FIG. 10 are provided with passage holes 11A to 11D, and the passage from the last space E to the discharge path 12 is provided with the passage holes 1A to 1D.
1E is provided to reduce the number of springs 10 gradually. In this example, the through holes 11A to 11D communicating with the respective space portions A to D and the through hole 11E of the last space portion E have a circular shape or an elliptical shape, and the first space portion A to the last space portion. It is formed gradually smaller toward the portion E.

Here, a passage hole 11A provided in the partition wall 6B is provided.
Is defined as d21, and the passage hole 11 formed in the partition wall 6C is provided.
B has an opening width d22, and the passage hole 1 provided in the partition wall 6D
Assuming that the opening width of 1C is d23, the opening width of the through hole 11D provided in the partition wall 6E is d24, and the opening width of the through hole 11E of the last space C is d25, d21>d22> d.
23>d24> d25.

In this example, although it depends on the shape of the spring 10,
As in the first embodiment, when the diameter of the spring is about 2 mm, d21 is about 30 mm, and d22 is 1
D5 is about 5 mm, d23 is about 10 mm, d2
4 is about 5 mm, and d25 is about 3 mm. This is because the spring 10 inside the drum is compared to the first embodiment.
This is to reduce the number earlier. Passage holes 11A to 11E
Is not limited to a circular shape or an elliptical shape, and may be a polygonal shape.

Each of the spaces A to E is formed with a through hole 11A to 11
The spring 10 has an appropriate inclined surface toward E, so that the spring 10 can easily move to the adjacent space B, space C, space D, space E, and the discharge path 12. The partition wall 6A between the first space A and the last space E has no passage hole. This is as described in the first embodiment.

Next, an operation example of the spring separating device 200 according to the second embodiment will be described. In this example, when each compression spring 10 is separated from a plurality of compression springs in a lump, the compression spring 1 is placed in the first space A shown in FIG.
0 is stored, the lid 7 is closed, and the power switch 17 shown in FIG. 5 is turned on. Then, for example, the motor speed is set to the first
It is assumed that the rotating drum 4 is slowly rotated in a certain direction in the same manner as in the embodiment.

On the premise of this, the rotation proceeds from the reference point Q shown in FIG. 11A, and as shown in FIG.
Reaches 180 °, the first space A is located immediately below. The rotation further proceeds, and from the reference point Q, FIG.
As shown in FIG. 1B, from the point in time when the rotation angle φ reaches 240 °, the compact spring 10 moves to the adjacent space B.
Further, when the rotation angle φ reaches 270 ° as shown in FIG. 11C, the reduced compression spring 10 limited by the diameter of the passage hole 11B of the partition wall 6C moves from the space B to the adjacent space C. I will be.

Further, as the rotation proceeds, the reference point Q
As shown in A, when the rotation angle φ reaches 330 °, the small mass of the compression spring 10 that has moved to the space C is further released and starts moving to the adjacent space D. When the rotary drum 40 completes the first rotation as shown in FIG. 12B and returns to its reference point Q, only a few compression springs 10 further separated from the small chunks of the compression springs 10 are adjacent to the space portion. It is made to move to D.

Then, as shown in FIG. 12C, when the rotation angle φ reaches 60 ° from the reference point Q of the rotary drum 40 as shown in FIG. 12C, the rotary drum 40 is further separated from several small pieces of the compression spring 10. Only a few compression springs 10 move from the space D to the last space E. Further, as the rotation proceeds, as shown in FIG.
Reaches 90 °, the individual compression springs 10 separated from the small chunks of the several compression springs 10 finish moving to the last space E.

As the rotation progresses, as shown in FIG. 13B, the rotation angle φ reaches 120 ° from the reference point Q, and the rotation further advances, and as shown in FIG.
When the angle reaches 80 °, the individual compression springs 10 that have moved to the last space E come into contact with the partition wall 6A.

Then, as shown in FIG.
Reaches 240 °, the individually separated compression springs 10
Slides on the partition wall 6A of the last space E and passes through the passage hole 11E.
It is led to. At the same time, the next small piece of the compression spring 10 starts moving from the space A to the space B. Thereafter, as shown in FIG. 14B, when the rotation angle φ reaches 270 °, the compression springs 10 that have been individually separated are moved through the passage holes 11E of the last space E.
Through the discharge path 12, passes through a discharge port 8 (not shown) of the rotating drum 40, and is dropped into an external receiving box 20 (see FIG. 1). At the same time, the movement of the small block of the compression spring 10 from the space A to the space B is completed. Further, when the rotation proceeds and the rotation angle φ reaches 330 ° as shown in FIG. 14C, the small mass of the compression spring 10 moves from the space B to the space C.

Similarly, according to the second embodiment, the passage holes 11A to 11D having different diameters provided in the partition walls 6B to 6E of the space portions A to E and the last space portion E are formed. Through hole 11 provided in a portion from
By E, the compression spring 10 which was initially large can be gradually displaced to the compression spring 10 which is small, and finally a plurality of compression springs 10 can be guided to the outlet 8 one by one. As a result, each of the plurality of compression springs 10 that are efficiently entangled as compared with the first embodiment can be used.
Can be automatically and quickly separated.

[0046]

As described above, according to the present invention,
A rotating drum having a plurality of space parts radially partitioned with respect to the rotation axis is provided, the first space part spring is housed, the lid is closed, and when the drum is rotated, a partition part of each space part is formed. The number of springs is gradually reduced by the provided through holes, and one of the springs is passed by the through holes provided in the last space.

With this configuration, a spring that was initially large can be gradually displaced to a smaller spring, and finally one spring can be guided to the discharge port. Therefore,
An apparatus for automatically separating each spring from a plurality of entangled springs can be constituted by simple mechanical components. INDUSTRIAL APPLICABILITY The present invention is very suitable when applied to an apparatus that automatically separates coiled springs such as a torsion spring or a compression spring that are entangled together, one by one.

[Brief description of the drawings]

FIG. 1 is a partially broken perspective view showing a configuration example of a spring separation device 100 as a first embodiment of the present invention.

FIG. 2 is a partially broken top view showing a configuration example (inside a drum) of a spring separation device 100.

FIG. 3 is a partially broken cross-sectional view showing a configuration example (position of a passage hole) of a spring separation device 100.

FIG. 4 is a partially broken side view showing a configuration example (discharge path) of the spring separation device 100.

FIG. 5 is a block diagram showing an example of an internal configuration of a control box 15 applied to the spring separating device 100.

FIGS. 6A to 6C are front views showing examples of shapes of a spring 10 to be separated, such as a compression spring, a tension spring, and a small torsion spring.

FIG. 7 is a rotating drum 4 according to the operation of the spring separating device 100.
FIG. 3 is a conceptual diagram showing an example of an internal state (No. 1).

FIG. 8 shows a rotating drum 4 according to the operation of the spring separating device 100.
It is a conceptual diagram which shows the example of the internal state of (2).

FIG. 9 is a rotating drum 4 according to the operation of the spring separating device 100;
FIG. 9 is a conceptual diagram showing an example (part 3) of the internal state of FIG.

FIG. 10 shows a spring separating device 200 as a second embodiment.
It is a front view of the partial crushing which shows the example of a structure.

11 is a conceptual diagram showing an example (part 1) of an internal state of a rotary drum 40 according to an operation of a spring separating device 200. FIG.

FIG. 12 is a conceptual diagram illustrating an example (part 2) of an internal state of the rotating drum 40 according to the operation of the spring separating device 200.

FIG. 13 is a conceptual diagram showing an example (part 3) of an internal state of the rotating drum 40 according to the operation of the spring separating device 200.

FIG. 14 is a conceptual diagram illustrating an example (part 4) of an internal state of the rotating drum 40 according to the operation of the spring separation device 200.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 base 2 bearing support 3 bearing 4 rotating drum 5 rotating shaft 6A to 6E partition wall (partition part) 7 lid 8 discharge port 9 front lid 11A to 11E passage hole 12 discharge path 13 gear box 14 motor 15 control Box 18 Motor control device 100, 200 Spring separation device A to E space

Claims (9)

[Claims] 1. A spring separating device for separating each spring from a plurality of entangled springs, comprising: a rotating drum having a plurality of spaces radially divided with respect to a rotation axis; The drum has an initial space portion having a lid for housing the spring, a passage hole provided in a partition portion of each space portion to gradually reduce the spring, and at least a A spring separating device, comprising: a last space portion having a passage hole sized to allow one to pass therethrough; and a discharge port for discharging a spring having passed through the passage hole of the last space portion. 2. A passage hole communicating each of the space portions,
The spring separating device according to claim 1, wherein the spring separating device is formed to be gradually smaller from the first space to the last space. 3. The spring separating device according to claim 1, wherein the rotary drum has at least three spaces. 4. The spring separating device according to claim 1, wherein each of the space portions has an inclined surface toward the passage hole. 5. When the angle formed between one partition part and the other partition part of the space is a wall angle θ, the wall angle θ is set to 90 ° or less. The spring separating device according to claim 1. 6. The spring separating device according to claim 1, wherein the discharge port is provided in a funnel shape on an extension of a rotation shaft of the rotary drum. 7. The spring separating device according to claim 1, wherein the rotating drum rotates in a fixed direction. 8. The spring separating apparatus according to claim 1, wherein the rotating drum is operated so as to intermittently rotate and stop repeatedly. 9. The spring separating device according to claim 1, further comprising a vibration generating means for applying vibration to the rotary drum.