JP2001088078A - Copper wire holding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a copper wire holding device capable of surely holding and extracting a copper wire extruded, in loop shape, from the end face of a stator when a motor is overhauled. SOLUTION: A clamp 11 is disposed circumferentially at the tip of a spindle 21 of a copper wire holding device. Each clamp 11 comprises a first linear guide 17, a frame part 12, a fixed jaw 13, and a movable jaw 14. The frame part 12 is connected to the spindle 21 through the first linear guide 17, and the tip portion of the frame part 12 forms the fixed jaw 13. A direct-acting actuator 15 is fixed to the rear end side of the frame part 12, and the movable jaw 14 is installed at the tip of a movable rod of the direct-acting actuator 15. A positioning block 19 is disposed so as to pass over the frame part 12 near the rear end part thereof, and a leg part is fixed to the spindle 21. The frame part 12 can be moved in radial direction of the spindle according to a difference in position and size of a copper wire loop 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a copper wire gripping device used for extracting and collecting a copper wire from an end face of a motor stator in a process of disassembling used home electric appliances and the like.

[0002]

2. Description of the Related Art According to the Home Appliance Recycling Law, it is required by law to recycle used home appliances as resources, and construction of processing facilities for that purpose is being promoted. Various methods have been proposed as a method for collecting useful materials from used home electric appliances. Among them, copper wire is attracting attention as a relatively high value metal to be recovered, and a device for collecting copper wire at low cost from motors such as washing machines and refrigerator refrigerators. Development is underway.

[0003] Motor disassembly work has been performed mainly by hand, since the types and sizes of recovered motors vary widely. At that time, for example, a method of separating a motor into a casing, a rotor, and a stator and then pulling a copper wire from the stator, or a method of pulverizing the whole motor and then separating it into iron and copper by magnetic sorting is performed. .

(Problems of the prior art) The reason why it is difficult to realize an automatic dismantling apparatus capable of recovering copper wires at low cost is as follows.
The types and sizes of recovered motors vary widely. For this reason, a method of pulverizing the whole can be considered at the forefront, but there is a problem that a great amount of energy is consumed from dismantling of the motor to recovery of the copper wire.

[0005] The most problematic of the copper wire recovery process not relying on pulverization is the process of extracting the copper wire from the motor stator. As a general method, there is a method in which after removing the casing and recovering the stator, a copper wire projecting in a loop from the end of the stator is cut at one end, and is gripped and pulled out from the other end.

[0006] There are various sizes of stators recovered from motors of home appliances. FIG. 7 shows an example of the size of the stator 1 recovered from the motor. As shown in this example, the size and position of the copper wire loop 2 cannot be accurately determined unless the casing is removed, and even if the same type of stator is used, the position of the copper wire loop and the copper wire loop 2 cannot be determined. Variations in the thickness of the material make it difficult to automate the dismantling device.

FIG. 8 shows an example of a conventional gripping device for a copper wire loop. In this example, an outer claw 71 and an inner claw 72 are provided according to the diameter of the stator, and these claws are divided into three parts in the circumferential direction, and attached to the tip of one actuator. However, when there is variation in the position and thickness of the copper wire loop 2 protruding from the end of the stator,
The distance between the outer claws 71 and the copper wire loops 2 or between the inner claws 72 and the copper wire loops 2 varies. In such a case, when the claws 71 and 72 hit the copper wire loop 2 in a narrow space,
Since the further movement of the claws 71 and 72 is restricted, the copper wire loop 2 cannot be reliably gripped over the entire circumference.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the conventional copper wire gripping device,
An object of the present invention is to disassemble a motor so that a copper wire projecting in a loop form from an end face of a cylindrical stator can be reliably gripped and pulled out even if its position and thickness vary. It is to provide a copper wire holding device.

[0009]

A copper wire gripping device according to the present invention is a device for gripping a copper wire projecting from an end face of a stator when a copper wire is pulled out from a stator of a waste motor, comprising: a main shaft; A plurality of clamps arranged in a circumferential direction on a distal end surface of the main spindle, wherein each of the clamps is a linear guide fixed to a distal end surface of the main spindle in a radial direction of the main spindle, and the main spindle is connected via the linear guide. A frame portion connected to the distal end surface of the main shaft and movable in the radial direction of the main shaft along the linear guide;
A fixed jaw formed on the distal end side of the frame portion, a linear motion actuator having a main body fixed to the rear end side of the frame portion, and a front end opposed to the fixed jaw attached to a distal end of a movable rod of the linear motion actuator. A movable jaw, a positioning block inserted between the front surface of the main body of the linear motion actuator and the rear surface of the movable jaw, and a leg thereof fixed to the distal end surface of the main shaft. I do.

The operation of the copper wire holding device of the present invention will be described.

First, when gripping the copper wire projecting from the end face of the stator, the movable rod of the linear actuator is driven in the direction in which it is extended, and the movable jaw is advanced toward the fixed jaw. At this time, since the frame portion can move in the radial direction of the main shaft along the linear guide, the copper wire can be reliably gripped even if the position and thickness of the copper wire vary.

Next, when releasing the gripped copper wire, the movable rod of the linear motion actuator is driven in the direction of pulling back, and the movable jaw is retracted from the fixed jaw. At this time,
Finally, the positioning block is sandwiched between the front surface of the main body of the linear actuator and the rear surface of the movable jaw, whereby the linear actuator and the movable jaw stop moving. Therefore, when the clamp is fully opened, the fixed jaw and the movable jaw are returned to their respective reference positions.

As a result, according to the copper wire holding device of the present invention, even if the position and thickness of the copper wire vary, the copper wire can be reliably held and pulled out from the stator.

[0014]

FIG. 1 shows the structure of a clamp portion for holding a copper wire loop in a copper wire holding device of the present invention. (A) is a side view, and (b) is a bottom view. FIG. 2 is a cross-sectional view taken along the line AA in FIG.

The clamp 11 comprises a main shaft 21 of a copper wire holding device.
Are arranged in the circumferential direction on the spindle plate 21A provided on the tip end surface of the main body. The clamp 11 includes a first linear guide 17, a frame 12, a fixed jaw 13, a movable jaw 14, a linear actuator 15, a positioning block 19, and the like.

The first linear guide 17 includes a main shaft plate 21
A is fixed radially to the distal end surface of A in the radial direction of the spindle plate 21A. The frame portion 12 is attached to the first linear guide 17 on the back side thereof,
A second linear guide 18 is formed on the front side of the.
A projecting portion is formed at a right angle on the tip end side (right end side in the figure) of the frame portion 12, and the portion serves as a fixed jaw 13. A projecting portion is also formed at a right angle also on the rear end side (the left end side in the figure) of the frame portion 12, and the linear motion actuator 1 is formed on that portion.
5 is fixed. Positioning block 1
9 is disposed so as to straddle the vicinity of the first linear guide 17 and the rear end of the frame portion 12, and its legs are
A is fixed to the tip surface. Linear actuator 15
The movable jaw 14 is attached to the tip of the movable rod. The movable jaw 14 has a fixed jaw 1
3 and can move forward and backward along the second linear guide 18.

The first linear guide 17 allows the clamp 11 to move to some extent freely in the radial direction of the main shaft (accordingly, the stator) according to the difference in the diameter of the stator to be processed, the size and the position of the copper wire loop 2, and the like. Has the role of enabling Note that the movable range is determined by the length of the first linear guide 17.

Further, the movable rod of the linear actuator 15 is driven in the reverse direction (retraction direction) to move the movable jaw 1.
4 is retracted, the positioning block 19 is sandwiched between the front surface of the main body of the linear motion actuator 15 and the rear surface of the movable jaw 14, as shown in FIG. The movement of the movable jaw 15 and the movable jaw 14 is stopped. Therefore, when the clamp 11 is fully opened, the fixed jaw 13 and the movable jaw 14
Will return to their respective reference positions.

In this example, a hydraulic cylinder is used as the linear motion actuator 15. It is desirable that the linear motion actuator 15 be a small actuator having a large gripping force (at least about 2000 N).

Next, the operation of gripping the copper wire loop protruding from the end of the stator by the clamp will be described with reference to FIG.

First, the movable rod of the linear actuator 15 is driven in the reverse direction (retraction direction) to move the movable jaw 1.
4 is retracted and the clamp 11 is fully opened,
As shown in (a), the clamp 11 is brought close to the copper wire loop 2 so as to straddle the copper wire loop 2. In this state, the movable rod of the linear actuator 15 is driven in the forward direction (extending direction) to move the movable jaw 14 to the second linear guide 18.
3 (moving to the right in the figure), and
The movable jaw 14 is pressed against the copper wire loop 2 as shown in FIG. When the movable jaw 14 comes into contact with the copper wire loop 2, a reaction force is generated from the copper wire loop 2, and the body portion of the linear motion actuator 15 is pushed back (leftward in the figure) by the reaction force. Here, the linear motion actuator 15
Is fixed to the rear end of the frame portion 12 and the fixed jaw 13 is formed at the front end portion of the frame portion 12, so that the frame portion 12 eventually moves rearward along the first linear guide 17. Will be. As a result, the copper wire loop 2 is finally gripped between the fixed jaw 13 and the movable jaw 14.

Next, referring to FIG. 4, after holding the copper wire loop by using the above clamp and pulling it out of the stator,
The operation of releasing the copper wire loop will be described.

Initially, the copper wire loop 2 is gripped between the movable jaw 14 and the fixed jaw 13 as shown in FIG. In this state, when the linear actuator 15 is driven in the reverse direction, the movable jaw 14
Retreat along 8 and away from copper loop 2. FIG.
As shown in (b), when the back surface of the movable jaw 14 abuts against the positioning block 19, the movable jaw 14 stops retreating, and instead, the main body of the linear motion actuator 15 is pulled forward (rightward in the figure). Can be The frame 12 moves forward along the first linear guide 17 with the movement of the main body of the linear actuator 15. As a result, the fixed jaw 13 is also separated from the copper wire loop 2, and the copper wire loop 2 is released. Finally, FIG.
As shown in (c), the front surface of the main body of the linear motion actuator 15 abuts against the positioning block 19, the clamp 11 is fully opened, and the fixed jaw 13 and the movable jaw 14 return to the above-described reference positions.

FIG. 5 shows an example of the structure of a copper wire gripping device incorporating the above clamp. In this example, the copper wire holding device 2
The four clamps 11 are attached to the lower side of the main shaft plate 21A provided at the tip of the main shaft 21. The clamps 11 correspond to the copper wire loops 2 protruding from the end face of the stator 1 and have a circumferential shape. Are arranged side by side.

FIG. 6 shows an example of the structure of a copper wire drawing device in which the above-mentioned copper wire holding device is incorporated. This device includes a copper wire holding device 20, a driving mechanism 63 thereof, a stator holding portion 65,
It comprises a stator reversing mechanism 66 and the like. Stator 1
Is gripped from the side by a stator gripping portion 65, and the stator gripping portion 65 is supported by a stator reversing mechanism 66. By the stator reversing mechanism 66, the posture of the stator 1 is reversed between the state in which the end face is upward and the state in which the end face is downward. A copper wire gripping device 20 is arranged above the stator 1 so as to face the end face of the stator 1, and the copper wire gripping device 20 is hung below the drive mechanism 63 via the main shaft 21.

[0026]

According to the copper wire holding device of the present invention, even when the position and the thickness of the copper wire loop protruding from the end face of the stator are not constant, the copper wire loop can be reliably held. Therefore, if the copper wire holding device of the present invention is used,
The reliability of the operation when pulling the copper wire from the stator is improved, and as a result, the copper wire drawing device can be automated.

[Brief description of the drawings]

FIG. 1 is a view showing a structure of a clamp for a copper wire loop, which is a main part of a copper wire holding device of the present invention, (a) is a side view,
(B) is a bottom view.

FIG. 2 is a sectional view taken along the line AA of the copper wire loop clamp of FIG. 1;

3A and 3B are diagrams illustrating an operation of gripping a copper wire loop with a clamp, wherein FIG. 3A illustrates a state in which the clamp is opened to approach the copper wire loop, and FIG. 3B illustrates a state in which the movable jaw contacts the copper wire loop. , (C) show the state where the copper wire loop is gripped between the fixed jaw and the movable jaw, respectively.

4A and 4B are diagrams illustrating an operation of releasing a copper wire loop gripped by a clamp, FIG. 4A illustrates a state in which a copper wire loop is gripped between a fixed jaw and a movable jaw, and FIG. (C) shows a state in which the copper wire loop is released from the clamp, and FIG.

FIG. 5 is a view showing an example of a copper wire holding device in which a plurality of clamps are arranged in a circumferential direction, (a) is a side view, and (b) is a bottom view.

FIG. 6 is a diagram showing an example of a copper wire drawing device in which the copper wire holding device of FIG. 5 is incorporated.

FIG. 7 is a diagram showing a state of a stator collected from used home appliances, and (a) to (c) are diagrams showing examples of various sizes.

FIG. 8 is a diagram showing an example of a conventional copper wire holding device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Stator, 2 ... Copper wire loop, 11 ... Clamp, 12 ... Frame part, 13 ... Fixed jaw, 14 ... Movable jaw, 15 ... Linear actuator, 17 ... first linear guide, 18 ... second linear guide, 19 ... positioning block, 20 ... copper wire gripping device, 21 ... spindle, 63 ... drive mechanism, 65 ... Stator gripping part, 66 ... reversing mechanism, 71 ... outer nail, 72 ... inner nail.

Claims (1)

[Claims] 1. A device for gripping a copper wire protruding from an end face of a stator when a copper wire is pulled out from a stator of a waste motor, comprising: a main shaft; and a plurality of circumferentially arranged distal end surfaces of the main shaft. A linear guide fixed to the distal end surface of the main shaft in the radial direction of the main shaft, and each of the clamps is connected to the distal end surface of the main shaft through the linear guide, and the main shaft extends along the linear guide. A frame portion movable in the radial direction of the frame portion, a fixed jaw formed on the distal end side of the frame portion, a linear motion actuator having a main body fixed to the rear end side of the frame portion, and a distal end of a movable rod of the linear motion actuator Is mounted between the movable jaw with the front facing the fixed jaw and the front of the main body of the linear motion actuator and the back of the movable jaw. Copper gripping apparatus comprising: the positioning blocks, a.