Conductive wire bundle separation device and conductive wire bundle separation method

Abstract

The conductor bundle 4M firmly adhered within the slot 2b is separated without causing deformation of the silicon steel plate and without chucking the processed stator 1A with excessive force. [Solution] A wire bundle separating device 6 separates a wire bundle 4M from a stator 1 having a stator core 2 having a central hole 2a and a plurality of slots 2b surrounding it, and a wire bundle 4M bonded in the slots 2b. The wire bundle separating device 6 has a press unit 30 having a stay 33, a press rod 34 driven up and down by a press actuator 31 attached to the upper part of the stay 33, and a support 37 attached to the lower part of the stay 33, the support 37 having a hollow portion 37a located on the axis L of the press rod 34 through which the wire bundle 4M can pass, and with the slots 2b aligned with the axis L and the underside of the stator core 2 supported by the support 37, the press rod 34 is inserted into the slots 2b by driving the press actuator 31.

Description

[Technical field]

[0001] The present invention relates to a stator core having a central hole and slots around the central hole, and a conductor bundle separating device and a conductor bundle separating method for separating a conductor bundle from a stator having conductor bundles bonded in the slots. [Background technology]

[0002] Electric vehicles are broadly classified into four types, and are collectively referred to as xEVs. Hybrid vehicles were the first to be commercially available, but 20 years have passed since their launch, and establishing recycling technology for xEVs is becoming a major challenge. The challenge that differs greatly from the dismantling and recycling of conventional automobiles is the dismantling and recycling of batteries and xEV motors.

[0003] Since there are no established technical methods for dismantling and recycling xEV motors, we will first explain the dismantling of home appliance motors for reference.

[0004] Since the Home Appliance Recycling Law came into force, the technology for dismantling cooling compressor motors (hereafter referred to as black motors) used in household and commercial refrigerators, air conditioners, water dispensers, vending machines, etc. has evolved. When dismantling black motors, the most valuable resource is the coiled conductor wire (mainly copper wire).

[0005] The black motor is a device that compresses refrigerant gas to high pressure, and the motor and compressor are sealed together in a welded iron container called a shell. The only inputs and outputs from this shell are the gas intake port, discharge port, and electrical leads, and it is completely sealed to prevent gas leaks. For this reason, it is not easy to disassemble it.

[0006] Generally, the materials are crushed in a crusher, and then separated afterwards. However, because black motors are extremely sturdy, the crusher blades do not last long, and the wires can get tangled, so the materials are not always separated neatly. In addition, copper powder adheres to the iron pieces, making it difficult to separate them completely.

[0007] The other method is to melt or mechanically cut the shell of the black motor, remove the contents, and then disassemble it into smaller pieces. The dismantling process for the black motor is outlined below. First step: Black motor shell cutting process Rotary type black motors are cut at two points, the top and bottom, while reciprocating type black motors are cut at one point along the circumference. Cutting methods include melting with gas or plasma, cutting by cutting, or cutting by the bite of a rotating blade using plastic deformation. Second process: Separation of the motor and compressor Remove the stator with the wires wound around it. Third step: Cutting the wire One of the conductors coming out from both ends of the stator is cut along the stator surface. Fourth step: Pulling out the wire Fix the stator in place, and grab and pull out the conductor protruding from the other end of the cut conductor.

[0008] The above is the case for black motors, but when it comes to dismantling and recycling xEV motors, disassembly is easy in the first and second steps because the motor is not sealed in a welded container, and the third step can be handled by applying a cutting machine for home appliances, but the biggest challenge is the fourth step.

[0009] Figures 1(a) to (f) show various stators 1 for xEV motors (reference numbers for each component of stator 1 are only given in Figure 1(a)). Stator core 2 is made up of several hundred stacked silicon steel sheets with a thickness of about 0.1 mm, with round or square conductor wires wound between multiple slots 2b according to a set rule, and upper conductor wires 4U and lower conductor wires 4L exposed on the upper and lower stator surfaces 3U and 3L of stator core 2.

[0010] In the case of round conductors, both the top and bottom are fixed to the circumference with string or the like, while in the case of square conductors, since they do not have the flexibility of round conductors, the top and bottom conductors are joined together by welding or other means. Square conductors are the mainstream for xEV motors because they can increase the current density.

[0011] [Patent Document 1] JP 2011-062030 A Summary of the Invention [Problem to be solved by the invention]

[0012] Problems with the method of extracting conductor wires from the stator will be described below.

[0013] Challenge 1 In order to withstand strong vibrations, the windings wound around the stator core 2 of the xEV motor shown in Figure 1 are firmly fixed in the slots 2b with adhesive or the like. Therefore, they cannot be pulled out as easily as the conductors of black motors for home appliances, which are not fixed in the slots. In other words, the conductors of an xEV motor cannot be pulled out with a conductor puller for black motors.

[0014] Challenge 2 The stator of the black motor can be carried by hand, but the maximum weight of the stator 1 of the xEV motor is more than 20 kg, and although it may be feasible in an experimental sense, it is commercially impossible to move, lift, turn, and perform other tasks by hand on a continuous basis. Currently, xEV motors are mainly used in passenger cars, but xEV motors for transport trucks, etc., which are expected to become more widespread in the future, are expected to become even larger and heavier.

[0015] Therefore, we conducted two experiments to establish a wire extraction method that could solve problem 1.

[0016] Experiment 1 Pull-out method After cutting the winding (upper conductor 4U or lower conductor 4L) extending outward from either the upper or lower stator surface 3U, 3L of the stator core 2 along the stator surface 3U or 3L, a 60-degree circumference of the conductor protruding from the other stator surface 3U or 3L was gripped by a powerful hydraulic gripping mechanism, and several points on the stator surfaces 3U, 3L in the vicinity were pressed down and pulled out. When the gripping mechanism was lifted with a maximum thrust of 2000 kg, it was confirmed that the conductor was lifted slightly out of the stator 1. This proves that the gripping force and thrust are sufficient to move the conductor inside the stator 1.

[0017] However, because the conductors are connected circumferentially at both the top and bottom, there are limited places where the stator 1 can be held down, and as a result, each of the thin silicon steel plates that make up the stator 1 separates and deforms as the conductors move, narrowing the width of the slots 2b. As a result, the resistance of the conductors increases rapidly when they are pulled out, and they stop moving altogether halfway through. It was found that this method simply results in greater deformation of the silicon steel plates, and therefore the conductors cannot be physically removed using this method.

[0018] Experiment 2: Method of pressing out the conductor wire in slot 2b The upper conductor 4U and the lower conductor 4L at both ends of the stator 1 were cut along the stator surfaces 3U and 3L, so that the slot 2b could be seen clearly. A bundle of conductor wires 4M (not shown in FIG. 1 / see FIG. 2) adhered with resin or the like was left in the slot 2b. Hereinafter, the stator 1 that has been processed in this way is called the processed stator 1A. A hole larger than the slot 2b was drilled in the reference surface, the processed stator 1A was placed on the reference surface with the slot 2b and the hole aligned, and a press rod was hydraulically pressed in from above the slot 2b. In this case, the silicon steel plate was not deformed because the periphery of the slot 2b was supported in contact with the reference surface, and it was possible to press it out by applying an appropriate force to the press rod.

[0019] Experiment 1 was conducted within a 60 degree range of the processed stator 1A (8 to 12 slots 2b), but as in Experiment 2, it was possible to push out the wire bundle 4M with significantly less force if it was done for each slot 2b.

[0020] However, the above method has the following problems 3 to 6.

[0021] Challenge 3 As shown in Figure 1, the height 5 of slot 2b is considerably longer than the cross-sectional dimensions of slot 2b. Therefore, when a long and thin press bar is inserted into slot 2b with a large force, the part inserted into slot 2b is guided by the inner wall of slot 2b and does not bend. However, when the press bar starts to be inserted into slot 2b, most of the press bar is exposed from slot 2b, so there is a problem that the press bar may buckle due to pressure. In experiment 2, multiple short bars were inserted in sequence, so buckling did not occur, but it is difficult to adopt a similar method in commercial equipment.

[0022] Challenge 4 When the outer diameter of the stator 1 is chucked, the chuck mechanism (chuck housing, etc.) completely shields the top and bottom surfaces of the stator, and the conductor bundle 4M in the slot 2b cannot be pressed out due to interference with the chuck mechanism. In order to maximize magnetic efficiency, the slot 2b is close to the inner diameter of the stator 1 as shown in Figure 1. Therefore, even when the central hole 2a is chucked from the inside, if the chuck mechanism becomes even slightly larger outside the central hole 2a, the pressed out conductor bundle 4M will interfere.

[0023] Challenge 5 When the press rod is pressed into the specified slot 2b while the inner or outer diameter of the stator 1 is chucked, the press force is applied to the entire chuck mechanism. If the chucking force is weak, the stator 1 may shift or tilt. On the other hand, if the chucking force is too strong, the silicon steel plate may be deformed.

[0024] Challenge 6 In order to press and push out the conductor bundle 4M in the slot 2b without deforming the silicon steel plate, a support is required to firmly support the stator core around the slot. To separate the conductor bundle 4M from multiple slots, the stator needs to be rotated each time the conductor bundle 4M of each slot is separated, but it is not desirable for the stator to come into contact with the support during rotation. [Means for solving the problem]

[0025] This application discloses the following invention. <Aspect 1> a stator core having a central hole and a plurality of slots around the central hole; a conductor bundle bonded in the slot, the conductor bundle having exposed portions at both ends of the stator core cut and removed; A wire bundle separating device for separating the wire bundle from a stator having Stay and A press actuator on the upper part of the stay; a support at a lower part of the stay having a cavity through which the conductor bundle can pass and a support part around the cavity; A press rod that is driven up and down on its axis by the press actuator; A rotating device that intermittently rotates the stator; A press unit having a press unit The rotation device intermittently rotates the stator so that one of the slots coincides with the axis, and the press actuator lowers the press rod, whereby the press rod enters the slot while the underside of the stator core is supported by the support portion, and the wire bundle is extruded from the slot. <Aspect 2> a table having an opening through which the support base can pass, the table being fixed to an apparatus body; a linear guide for vertically guiding the stay fixed to the device body; A balance spring that biases the stay upward; and the stay is supported so that the upper surface of the support is located below the table due to the balance between the weight of the press unit and the biasing force of the balance spring; 2. The wire bundle separation device according to claim 1, wherein the biasing force of the press rod is applied to the stator on the table, causing the stay to rise to a position where the support portion abuts against the underside of the stator core on the table. <Aspect 3> The rotating device is a chuck housing having an outer shape that can pass through the central hole; A plurality of chuck jaws that are slidable in a radial direction at different angular positions of the chuck housing; a rotary actuator that intermittently rotates the chuck housing; A chuck unit having The chuck unit, an origin height at which the upper end of the chuck housing is positioned below the table; a first operating height at which the chuck jaws can engage with the central hole of the stator placed on the table; and a second operational height above the first operational height; A linear actuator that moves the device up and down between the three height positions; 2. The wire bundle separation device according to claim 1, further comprising: <Aspect 4> The chuck unit includes: a tapered shaft that is movable up and down within a central shaft hole of the chuck housing; a cam follower that drives the chuck jaws radially outward by sliding on the tapered shaft that moves up and down; a fluid pressure actuator that drives the tapered shaft up and down within the shaft hole; 4. The wire bundle separation device of embodiment 3, comprising: <Aspect 5> The rotary actuator, A hollow rotating shaft; a drive fluid conduit passing through the hollow rotating shaft; and One end of the driving fluid line is connected to the hydraulic actuator; 5. The wire bundle separation device of embodiment 4, wherein the other end of the driving fluid conduit is connected to a swivel joint. <Aspect 6> The press unit further includes a guide member having a guide hole formed on the axis line for guiding the press bar, The press bar has a tip portion and a base portion having a cross-sectional shape with a larger moment of area than the tip portion, 2. The conductor wire bundle separation device according to claim 1, wherein the guide hole has a cross-sectional shape that allows both the tip end and the base end to pass through. <Aspect 7> Using a wire bundle separator, a stator core having a central hole and a plurality of slots around the central hole; a conductor bundle bonded in the slot, the conductor bundle having exposed portions at both ends of the stator core cut and removed; A wire bundle separation method for separating a wire bundle from a stator having the wire bundle, comprising: The wire bundle separation device includes: Stay and A press actuator on the upper part of the stay; a support at a lower part of the stay having a cavity through which the conductor bundle can pass and a support part around the cavity; A press rod that is driven up and down on its axis by the press actuator; A rotating device that intermittently rotates the stator; A press unit having a press unit a rotating device intermittently rotating the stator so that one of the slots coincides with the axis, and a press actuator lowering the press bar, whereby the press bar enters the slot while the lower surface of the stator core is supported by the support portion, and the wire bundle is extruded from the slot. [Brief description of the drawings]

[0026] [Figure 1]The stator structure of various xEV motors. [Diagram 2] 1 is a side cross-sectional view of a wire bundle separation device 6 according to one embodiment of the present invention. [Diagram 3] FIG. [Figure 4] 1 shows a chuck unit 10. (a) is a plan view of the main part, and (b) is a side cross-sectional view. [Diagram 5] The press unit 30 and the advance / retract unit 50. (a) is a plan view of the main part, and (b) is a side cross-sectional view. [Figure 6] 3A and 3B are side and plan views of the press bar 34 and the guide member 35, and cross-sectional views of the press bar 34 and the guide member 35 at positions C, D, E, and F. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] A wire bundle separation device 6 according to one embodiment of the present invention will now be described.

[0028] 1, the stator 1 has a stator core 2 in which a central hole 2a and slots 2b are formed around the central hole 2a, and a winding 4 wound around the slot 2b and bonded and fixed with resin or the like. Of the windings, the portions exposed from the upper and lower surfaces 3U, 3L of the stator core 2 are referred to as the upper winding 4U and the lower winding 4L, respectively.

[0029] The stator 1 is cut or otherwise processed to remove the upper winding 4U and the lower winding 4L from the stator core 2, resulting in a processed stator 1A. Wire bundles 4M bonded and fixed with resin or the like are left in the slots 2b of the processed stator 1A. The processed stator 1A is the object to be processed by the wire bundle separation device 6. The wire bundle 4M is the portion of the winding 4 from which the upper winding 4U and the lower winding 4D have been cut and removed. The wire bundle 4M usually has roughly the same cross-sectional shape as the slots 2b. The purpose of the wire bundle separation device 6 is to push out the wire bundle 4M from the slots 2b of the processed stator 1A and separate it.

[0030] 2 and 3 show a conductor bundle separation device 6 according to one embodiment of the present invention. Fig. 2 is a side view, and Fig. 3 is a plan view. The conductor bundle separation device 6 has a device body 64, a table 60, a press unit 30, and a chuck unit 10. The conductor bundle separation device 6 may further have an advance / retract unit 50 for driving the press unit 30 forward and backward, a fluid pressure unit (fluid pressure source) 70 for driving various actuators, a control panel 80 (Fig. 3), etc.

[0031] FIG. 5 shows a press unit 30. The press unit 30 includes a stay 33, a press actuator 31 fixed to the upper part of the stay 33, a press rod 34 connected to the drive shaft of the press actuator 31 via a cylinder rod joint 41 and a press rod joint 42, and a support 37 in which a cavity (or recess) 37a extending from the lower end of the stay 33 is formed. The press rod 34 is driven up and down along an axis (drive shaft) L by the press actuator 31. The stay 33 and the support 37 may be formed as an integral member. The cavity 37a is located on the axis L of the press rod 34 and has a shape / size that allows the conductor bundle 4M to pass through. In order to accommodate a plurality of types of stators 1 having slots 2b of different shapes / sizes, the cavity 37a may have a shape / size that allows all of the conductor bundles 4M in the slots 2b of a plurality of shapes / sizes to pass through. Although FIG. 5 shows a linear cavity 37a, the cavity 37a may be curved, bent, or the like along the way.

[0032] The advance / retract unit 50 may have a linear guide 39 fixed to the device body 64, a base 51 that allows the linear guide 39 to slide back and forth, and an up-down linear guide 36 attached to the base 51, and the stay 33 of the press unit 30 may be able to slide up and down on the linear guide 36.

[0033] The press unit 30 may have a linear position sensor 32 for detecting the position of the stay 33 on the linear guide 36. The advance / retract unit 50 may have an actuator for slidingly driving the base 51 and a sensor for detecting the position of the press unit 30.

[0034] The conductor bundle separating device 6 may further include a balance spring 38 inserted between the linear guide 39 and the stay 33. That is, the stay 33 is guided vertically by the linear guide 36 and is biased upward by the balance spring 38. Therefore, the press unit 30 in an unloaded state is stopped at a height position (balanced position) where the weight of the press unit 30 and the biasing force of the balance spring 38 are balanced, and can be moved vertically from the balanced position with a small external load. In the conductor bundle separating device 6 of this example, the dimensions, strength, etc. of the balance spring 38 are set so that the upper surface 37b of the support 37 is located below the table 60 (reference point Hr) when the press unit 30 is in the balanced position.

[0035] As shown in Fig. 3, an opening 61 is formed in the table 60. The opening 61 may have a shape / size that allows the chuck housing 15 (Fig. 4) or, further, the support 37 (or the support 37 and the stay 33) to pass through. The opening 61 may have a circular portion 61a through which the chuck housing 15 passes and an additional portion 61b through which the support 37 (or the support 37 and the stay 33) passes. The table 60 has rollers 65 and 66, and the treated stator 1A can be moved on the table 60 with a small force as shown by the arrow in Fig. 3.

[0036] FIG. 4 shows the chuck unit 10. The chuck unit 10 has a chuck housing 15 having an outer shape that can pass through the central hole 2a of the treated stator 1A, chuck jaws 11 that can slide in grooves extending in the radial direction at different angular positions of the chuck housing 15, and a rotary actuator 21 that intermittently rotates the chuck housing 15. The chuck unit 10 can grip the treated stator 1A by engaging the chuck jaws 11 with the central hole 2a by sliding the chuck jaws 11 radially outward. FIG. 4 shows an example of a three-way chuck having three chuck jaws 11 arranged at intervals of 120 degrees, but the angular interval and the number of chuck jaws 11 can be changed. Since the inner diameter of the central hole 2a may differ depending on the type of stator 1, it is preferable to make the chuck jaws 11 or the tips of the chuck jaws 11 replaceable according to the inner diameter of the central hole 2a.

[0037] The wire bundle separation device 6 may further include a linear actuator 23 for driving the chuck unit 10 up and down. The linear actuator 23 moves the chuck unit 10 in the following manner: - an origin height H0 at which the upper end of the chuck housing 15 is located below the table 60; - a first operating height H1 at which the chuck jaws can engage with the central hole 2a of the treated stator 1A placed on the table 60; and a second operating height H2 above the first operating point; It is possible to move the height H0 to H2 among these three heights. In the drawing, Hr indicates the height position (reference point Hr) of the surface of the table 60. The origin height H0 is a position slightly below the reference point Hr.

[0038] In order to stabilize and ensure the movement of the chuck unit 10 among the three heights H0 to H2 and / or to facilitate control, it is preferable that the linear actuator 23 be a dual cylinder having two linear cylinders 23a, 23b connected in tandem.

[0039] In order to stabilize the operation of the linear actuator 23, it is preferable to provide a guide rod 24 that supports the chuck unit 10 and a linear bushing 25 that guides the guide rod 24.

[0040] The chuck unit 10 may further include a tapered shaft 17 that is movable up and down within a shaft hole formed in the center of the chuck housing 15, a cam follower 12 that drives the chuck jaws 11 radially outward by sliding on the tapered shaft 17, and a fluid pressure actuator 28 that drives the tapered shaft 17. The fluid pressure may be, for example, hydraulic or pneumatic, and pneumatic is particularly preferred. The chuck unit 10 may further include a return spring 14 that biases each of the chuck jaws 11 radially inward.

[0041] When the tapered shaft 17 is raised by driving the fluid pressure actuator 28, the cam follower 12 slides on the tapered shaft 17, and the chuck jaws 11 are driven radially outward. When the tapered shaft 17 descends, the chucking jaws 11 are driven radially inward by the biasing force of the return spring 14.

[0042] The cam follower 12 preferably has a roller 12a that slides and rotates on a tapered shaft 17, and a rotating shaft 12b that supports the roller 12a and has both ends supported by the chuck jaws 11. The tapered shaft 17 preferably has an inclined flat surface 18 at a position corresponding to the roller 12a of each chuck jaw 11. By sliding the roller 12a on the inclined flat surface 18, the sliding stability is improved.

[0043] The rotary actuator 21 has a hollow rotating shaft through which a driving fluid pipe 20 may be passed. One end of the driving fluid pipe 20 may be connected to a fluid pressure actuator 28, and the other end may be connected to a swivel joint 22. This allows for fluid pressure control using a simple structure of the fluid pressure actuator 28 that rotates and moves up and down. The swivel joint 22 may be connected to a fluid pressure unit 70 (Fig. 3).

[0044] The press unit 30 may further include a guide member 35 at an intermediate height position of the stay 33. The guide member 35 may be fixed to the stay 33. Fig. 6 shows a side view and a plan view of the press bar 34 and the guide member 35 in a preferred embodiment, and cross-sectional views of the press bar 34 and the guide member 35 at positions C, D, E, and F.

[0045] The press bar 34 preferably has a tip portion 34a and a base portion 34b having a cross-sectional shape with a larger moment of area than the tip portion 34a. In the example shown in the figure, the tip portion 34a of the press bar 34 has a shape (e.g., flat shape) that allows it to be inserted into the slot 2b, and the base portion 34b has a shape (e.g., cross shape) with a larger moment of area than the tip portion 34a.

[0046] The guide member 35 preferably has a guide hole 35a for guiding the press bar 34. The guide hole 35a is preferably located on the axis L of the press bar 34. The guide hole 35a preferably has a cross-sectional shape that allows both the tip end 34a and the base end 34b of the press bar 34 to pass through.

[0047] When the press bar 34 descends and comes into contact with the stator 1, and then, in the process of being inserted into the slot 2b, an axial force acts on the press bar 34, which can cause the press bar 34 to buckle. However, in the press unit 30, the tip end 34a is guided by the guide hole 35a, and further, the base end 34b has a large second moment of area, so that buckling of the press bar 34 can be prevented. The length of the tip end 34a should be approximately the same as the height 5 of the stator core 2 or slightly longer than that. The length of the guide member 35 should be approximately the same as the height 5 of the stator core 2.

[0048] In order to accommodate multiple types (models) of treated stators 1A with different slot shapes, the tip portion 34a may have a shape and size that allows it to be inserted into any of the slots 2b of the various treated stators 1A. For example, the tip portion 34a may have a shape and size that allows it to be inserted into any of the slots 2b of the various treated stators 1A.

[0049] In Figure 6, a rectangular slot 2b (Figures 1(a) to (c)) is assumed, and the press bar 34 and guide hole 35a are shown in a rectangular combination shape, but in the case of a slot 2b of another shape (Figures 1(d) to (f)), the shapes of the press bar 34 and guide hole 35a can be changed accordingly.

[0050] The conductor bundle separation device 6 may have a control device (not shown) that is configured with a computer, a storage medium, etc., in order to control the operation of the device by a computer.

[0051] A wire bundle separation method (method of operating the wire bundle separation device 6) according to one embodiment of the present invention will now be described.

[0052] Advance preparation Step 1: The chuck unit 10 is supported by the rotary actuator 21 at the origin height H0 so that the upper end of the chuck housing 15 is positioned below the table 60. Step 2: The strength of the balance spring 38 is adjusted so that the upper surface 37 b of the support 37 is positioned slightly lower than the table 60 . Step 3: The press unit 30 is moved backward on the linear guide 39 to the position furthest from the chuck unit 10. Step 4: A press rod 34 and a guide member 35 corresponding to the type of treated stator 1A to be worked on are attached to the tip of the press actuator 31 via a cylinder rod joint 41 and a press rod joint 42. Step 5: The pressing start position of the press bar 34 and the driving distance of the press actuator 31 according to the height 5 of the stator 1 may be stored in advance in a storage medium or the like. By performing the above steps 1 to 5, the treated stator 1A can be freely moved on the table 60 without interfering with members such as the chuck housing 15, the support 37, and the press rod 34 (see the arrow in FIG. 3).

[0053] Carrying in, alignment, etc. Step 6: The treated stator 1A is slid on the table 60 and placed at the position of the opening 61a. Step 7: The chuck unit 10 is raised to the first operating height H1 by driving the linear actuator 23. This causes the chuck jaws 11 to rise to a height at which they can chuck the central hole 2a. Step 8: The tapered shaft 17 is raised by driving the fluid pressure actuator 28. As a result, the chuck jaws 11 move radially outward and come into contact with the inside of the central hole 2a of the treated stator 1A, and the treated stator 1A is chucked. Step 9: The chuck unit 10 is raised to the second operating height H2 by driving the linear actuator 23. This separates the processed stator 1A from the table 60. Therefore, the processed stator 1A can be freely rotated without interfering with the table 60. Step 10: The press unit 30 is advanced along the linear guide 39 to a prescribed position according to the type of the processed stator 1A. Fine adjustment may be performed manually. If the rotational position of the processed stator 1A is misaligned, the rotary actuator 21 is rotated so that the slot 2b is positioned on the axis L. The rotation may be performed manually, and the alignment may be judged visually.

[0054] Extrusion separation of 4m of conductor bundle Step 11: The press actuator 31 is driven to lower the press bar 34 in accordance with steps 11-1 and 11-2 below. Step 11-1: When the press rod 34 descends and its tip comes into contact with the conductor bundle 4M, and the downward biasing force of the press actuator 31 acts on the treated stator 1A, the pressing unit 30 rises along the linear guide 36 due to the biasing force. The press unit 30 moves upward with only a small force because it is supported in a state where its weight and the biasing force of the balance spring 38 are balanced. Therefore, the press rod 34 does not descend and can maintain the position (contact position) where the tip of the press rod 34 came into contact with the conductor bundle 4M. During this time, almost no force is applied to the treated stator 1A and the chuck jaws 11. Step 11-2: When the upper surface 37b of the support 37 comes into contact with the lower surface of the stator core 2, the press unit 30 stops rising and, instead, the press bar 34 starts to fall from the contact position. Since the lower surface of the stator core 2 is supported by the upper surface 37b of the support 37 and cannot move downward, the press bar 34 enters the slot 2b and pushes the conductor bundle 4M from the slot 2b into the cavity 37a. Since the periphery of the slot 2b is supported by the upper surface 37b of the support 37, deformation of the silicon steel plate and the resulting deformation of the shape of the slot 2b can be prevented. The pushed-out conductor bundle 4M is collected in a collection box 63 via a chute 62 (FIG. 2). Step 12: When the extrusion of the conductor bundle 4M is completed, the press actuator 31 is driven to raise the press rod 34 to the initial position. The completion of the extrusion can be determined by measuring the height position of the press rod 34 by the linear position sensor 32 and comparing it with the driving distance of the press actuator 31 that is stored in advance for each type of processed stator 1A. Step 13: After confirming that the press bar 34 has risen to its initial position, the rotary actuator 21 is driven to rotate the chuck unit 10 (processed stator 1A) to a position where the next slot 2b coincides with the axis L of the press bar 34. As described in step 9, the processed stator 1A can rotate freely. Step 14: Thereafter, steps 11 to 13 are repeated to separate the conductor bundles 4M in all slots 2b.

[0055] Opening and removal of treated stator 1A, etc. Step 15: When separation of the conductor bundles 4M in all slots 2b is completed, the linear actuator 23 lowers the chuck unit 10 to the first operating height H1, and then the fluid pressure actuator 28 lowers the tapered shaft 17, thereby releasing the chuck of the processed stator 1A by the chuck unit 10, and then the linear actuator 23 lowers the chuck unit 10 to the origin height H0. Thereafter, the press unit 30 may be retreated on the linear guide 39 to the retracted position. Step 16: The treated stator 1A is slid on the table 60 by using the rolling of the rollers 65, 66 and is carried out of the apparatus.

[0056] Thereafter, steps 6 to 16 can be repeated to separate the conductor bundles 4M from a plurality of treated stators 1A.

[0057] All or part of the above steps 6 to 16 can be automatically operated by controlling the actuators 21, 23, 28, 31, etc. by a control device, etc. In particular, it is preferable to automatically operate steps 11 to 15.

[0058] According to the conductor bundle separation device 6, the conductor bundle 4M is pushed out of the slot 2b by inserting the press rod 34 into the slot 2b while the underside (around the slot 2b) of the stator core 2 is supported by a support 37 having a hollow portion 37a through which the conductor bundle 4M on the axis L of the press rod 34 can pass. Therefore, the conductor bundle 4M firmly adhered in the slot 2b can be pushed out and separated without causing deformation of the silicon steel plate and without chucking the processed stator 1A with excessive force.

[0059] Furthermore, while the stay 33 is guided by the linear guide 36 so that it can move up and down, the stay 33 is supported by the balance spring 38 so that the support 37 is located below the table 60, so that the processed stator 1A can be moved on the table 60 without interfering with the support 37, and the support 37 can support the stator core 2 when the conductor bundle 4M is extruded and separated. Since the lower surface of the stator core 2 is supported by the support 37, it is possible to extrude and separate the conductor bundle 4M with almost no external force acting on the stator core 2 or the chuck jaws 11.

[0060] Furthermore, the chuck housing 15 can pass through the central hole 2a, and the chuck claws 11 engage with the central hole 2a from the inside to chuck the processed stator 1A, and the linear actuator 23 can move the chuck housing 15 up and down between the origin height H0, the first operating height H1, and the second operating height H2. This prevents the chuck housing 15 from blocking the slots 2b, and allows the processed stator 1A to be moved on the table 60 without interfering with the chuck housing 15, and also allows the processed stator 1A to be rotated without coming into contact with the table 60.

[0061] The chuck jaws 11 are driven radially outward by sliding the cam follower 12 on a tapered shaft that moves up and down by the fluid pressure actuator 28 in the central shaft hole of the chuck housing, which prevents excessive gripping force from being applied to the processed stator 1A when chucking the processed stator 1A, thereby preventing deformation of the silicon steel plate or slot 2b due to excessive gripping force and resulting difficulty in extruding and separating the conductor bundle 4M. To prevent excessive gripping force, it is preferable that the fluid pressure actuator 28 be of the pneumatic type and be operated at a pre-adjusted pressure.

[0062] Furthermore, a hollow rotating shaft is provided in the rotary actuator 21, a drive fluid pipe 20 is passed through the hollow rotating shaft, and both ends of the drive fluid pipe 20 are connected to the fluid pressure actuator 28 and the swivel joint 22, making it possible to supply working fluid to the fluid pressure actuator 28, which moves up and down and rotates.

[0063] Furthermore, a guide member 35 having a guide hole 35a is provided on the axis L, the base end 34b of the press rod 34 has a larger geometric second moment than the tip end 34a, and the guide hole 35a has a cross-sectional shape that allows both the tip end 34a and the base end 34b to pass through, thereby making it possible to prevent buckling of the press rod 34 when the conductor bundle 4M is pushed out.

[0064] The wire bundle separation device 6 and the dimensions, shapes, arrangements, numbers, materials, and the like of the elements thereof described in the above embodiment are merely examples, and other embodiments are possible. For example, when the treated stator 1A is loaded / unloaded using a robot or the like and the chuck unit 10 chucks the treated stator 1A at the loading position, the table 60, the linear guide 39, and the like can be omitted, and since there is no need to move the chuck unit 10 from the second operating height H2, the linear actuator 23 can also be omitted. When the treated stator 1A is rotated using a robot or the like, the chuck unit 10 can be omitted. [Explanation of symbols]

[0065] 1. Stator 1A···Processed stator 2. Stator core 2a...Central hole 2b...Slot 3U, 3L... Stator surface 4. Winding 4U···Upper winding 4L...Lower winding 4M... Conductor bundle 5...Slot height 6... Conductor bundle separation device 10. Chuck unit 11 Chuck jaws 12 Cam follower 12a···Roller 12b Rotation axis 14 Return spring 15 Chuck housing 17 Tapered shaft 18... inclined plane 20... Driving fluid line 21 Rotary actuator 22 Swivel joint 23. Linear Actuator 24 Guide rod 25···Linear bushing 28 Fluid pressure actuator 30 Press unit 31 Press actuator 32 Linear Position Sensor 33. Stay 34 Press rod 34a...Tip 34b...Proximal end 35...Guide member 35a···Pilot hole 36···Linear guide 37...Abutment 37a...Cavity part 37b...Surface 38. Balance spring 39 Linear guide 41...Cylinder rod joint 42 Press rod joint 50...Advance and retreat unit 60. Table 61...Aperture 61a Circular section 61b Additional part 62 Shooter 63 Collection box 64...Device body 65,66...Roller 70 Fluid pressure unit 80...Control Panel H0: Origin height H1: First operating height H2: Second operating height Hr...Reference point L...axis

Claims

1. a stator core having a central hole and a plurality of slots around the central hole; a conductor bundle bonded in the slot, the conductor bundle having exposed portions at both ends of the stator core cut and removed; A wire bundle separating device for separating the wire bundle from a stator having Stay and A press actuator on the upper part of the stay; a support at a lower part of the stay having a cavity through which the conductor bundle can pass and a support part around the cavity; A press rod that is driven up and down on its axis by the press actuator; A rotating device that intermittently rotates the stator; A press unit having a The rotation device intermittently rotates the stator so that one of the slots coincides with the axis, and the press actuator lowers the press rod, whereby the press rod enters the slot while the underside of the stator core is supported by the support portion, and the wire bundle is extruded from the slot.

2. a table having an opening through which the support base can pass, the table being fixed to an apparatus body; a linear guide for vertically guiding the stay fixed to the device body; A balance spring that biases the stay upward; and the stay is supported so that the upper surface of the support is located below the table due to the balance between the weight of the press unit and the biasing force of the balance spring; 2. The wire bundle separation device according to claim 1, wherein the biasing force of the press rod is applied to the stator on the table, so that the stay rises to a position where the support portion abuts against the lower surface of the stator core on the table.

3. The rotating device is a chuck housing having an outer shape that can pass through the central hole; A plurality of chuck jaws that are slidable in a radial direction at different angular positions of the chuck housing; a rotary actuator that intermittently rotates the chuck housing; A chuck unit having The chuck unit, an origin height at which the upper end of the chuck housing is positioned below the table; a first operating height at which the chuck jaws can engage with the central hole of the stator placed on the table; and a second operational height above the first operational height; a linear actuator for moving the device up and down between the three height positions; 2. The wire bundle separation device of claim 1, further comprising:

4. (delete)

5. (delete)

6. The press unit further includes a guide member having a guide hole formed on the axis line for guiding the press bar, The press bar has a tip portion and a base portion having a cross-sectional shape with a larger moment of area than the tip portion, 2. The conductor bundle separating device according to claim 1, wherein said guide hole has a cross-sectional shape that allows both said tip end and said base end to pass therethrough.

7. Using a wire bundle separator, a stator core having a central hole and a plurality of slots around the central hole; a conductor bundle bonded in the slot, the conductor bundle having exposed portions at both ends of the stator core cut and removed; A wire bundle separation method for separating a wire bundle from a stator having the wire bundle, comprising: The wire bundle separation device includes: Stay and A press actuator on the upper part of the stay; a support at a lower part of the stay having a cavity through which the conductor bundle can pass and a support part around the cavity; A press rod that is driven up and down on its axis by the press actuator; A rotating device that intermittently rotates the stator; A press unit having a press unit a rotating device intermittently rotating the stator so that one of the slots coincides with the axis, and a press actuator lowering the press bar, whereby the press bar enters the slot while the lower surface of the stator core is supported by the support portion, and the wire bundle is extruded from the slot.