Wire bundle separation device and wire bundle separation method

Abstract

[Task] Separate the wire bundle (4M) that is firmly bonded within the slot (2b) without causing deformation of the silicon steel sheet and without chucking the completed stator (1A) with excessive force. [Solution] A wire bundle separation device (6) for separating a wire bundle (4M) from a stator (1) comprising a central hole (2a) and a plurality of slots (2b) around it, and a wire bundle (4M) bonded within the slots (2b), comprising a stay (33), a press rod (34) driven up and down by a press actuator (31) above the stay (33), and a press unit (30) comprising a base (37) below the stay (33), wherein the base (37) includes a cavity (37a) through which a wire bundle (4M) can pass, located on the axis (L) of the press rod (34), and while the slots (2b) are aligned with the axis (L) and the lower surface of the stator core (2) is supported by the base (37), the press rod (34) is driven by the press actuator (31). It was made into a wire bundle separator (6) that is inserted into a slot (2b).

Description

Technology Field

[0001] The present invention relates to a wire bundle separation device and a wire bundle separation method for separating a wire bundle from a stator comprising a stator core having a central hole and slots formed therearound thereto, and a wire bundle bonded within the slots. Background Technology

[0002] There are broadly four types of electric vehicles, which are collectively referred to as xEVs. Although hybrid vehicles were the first to be commercially sold, 20 years have already passed since sales began, making the establishment of recycling technology for xEVs a major challenge. A challenge that differs significantly from the dismantling and recycling of conventional automobiles is the dismantling and recycling of batteries and xEV motors.

[0003] Since technical methods for the dismantling and recycling of xEV motors have not been established, we will first explain the dismantling of home appliance motors for reference.

[0004] Since the enactment of the Home Appliance Recycling Act, dismantling technology for cooling compressor motors (hereinafter referred to as "black motors") used in household or commercial refrigerators, air conditioners, water dispensers, vending machines, etc. has evolved. When dismantling black motors, the most valuable resource is the coiled wire (mainly copper wire).

[0005] A black motor is a device used to compress refrigerant gas to a high pressure, and the motor and compressor are integrated and sealed within a welded iron container called a shell. The only inputs and outputs from this shell are the gas intake port, the discharge port, and lead wires for conducting electricity, and it is completely sealed to prevent gas leakage. Therefore, it is not easy to disassemble.

[0006] Generally, there is a method of putting iron, copper, silicon steel sheets, aluminum, and in some cases, magnets containing rare earth elements into a crusher and then separating them, but since black motors are extremely robust, the blades of the crusher do not last long, and it is not always possible to separate them cleanly because wires get tangled, and it is also difficult to completely separate them because copper powder adheres to the steel pieces.

[0007] Another method is to melt or mechanically cut the shell of the black motor, extract the contents, and further disassemble it. A schematic of the disassembly process of the black motor is shown below.

[0008] Shell cutting process of a first-stroke black motor

[0009] Rotary black motors cut at two locations, upper and lower, and reciprocating black motors cut at one location along the circumference. Cutting methods include cutting by gas or plasma, cutting by cutting, or cutting by the digging of a rotary blade using plastic deformation.

[0010] Separation of the second-stroke motor section and the compressor

[0011] Remove the stator with the wire wound around it.

[0012] Cutting of the third-stroke line

[0013] Cut one end of the wire coming out of both ends of the stator along the stator surface.

[0014] 4th stroke, pulling out of the boat

[0015] Fix the stator and pull out the wire coming out from the other end of the severed wire.

[0016] The above applies to black motors, but in the dismantling and recycling of xEV motors, the first and second processes are easy to disassemble because the motor is not sealed within a welded container, and the third process can also be handled by using a household cutter; however, the biggest challenge is the fourth process.

[0017] Figures 1(a) to (f) show various stators (1) of an xEV motor (the symbols for each component of the stator (1) are assigned only in Figure 1(a)). The stator core (2) is constructed by overlapping hundreds or more silicon steel plates with a thickness of about 0.1 mm, and a circular wire or an angle wire is wound between a plurality of slots (2b) according to a certain rule, and an upper wire (4U) and a lower wire (4L) are exposed on the upper and lower stator surfaces (3U, 3L) of the stator core (2).

[0018] In the case of round wires, both the top and bottom are fixed to the circumference using strings or similar means, whereas in the case of angle wires, since they lack the flexibility of round wires, the wires are joined together at both ends by welding or similar methods. Angle wires are becoming the mainstream for xEV motors because they can achieve high current density. Prior art literature

[0019] Japanese Published Patent No. 2011-062030 The problem to be solved

[0020] The following describes the problem in the method for extracting a wire from the stator.

[0021] Assignment 1

[0022] In order to withstand violent vibrations, the winding wound on the stator core (2) of the xEV motor shown in FIG. 1 is firmly fixed with adhesive or the like within the slot (2b). Therefore, it cannot be easily drawn out like the wire of a black motor for home appliances that is not fixed within the slot. In other words, the wire of the xEV motor cannot be drawn out using a wire drawer for black motors.

[0023] Assignment 2

[0024] Although the stator of a black motor can be transported by hand, the stator (1) of an xEV motor weighs more than 20 kg, and while this may be acceptable experimentally, it is not feasible to continuously perform tasks such as moving, lifting, and reversing by hand commercially. Currently, xEV motors are mainly used in passenger cars, but xEV motors for transport trucks and other vehicles expected to be widely distributed in the near future are expected to become larger and heavier.

[0025] Therefore, in order to first establish a wire extraction method capable of solving Task 1, two experiments were conducted.

[0026] Experiment 1: Drawing Method

[0027] 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), and gripping the 60-degree circumference of the conductor coming out from the other stator surface (3U or 3L) with a powerful hydraulic gripping mechanism, and receiving the reaction force when pulling by pressing several points on the stator surface (3U, 3L) in that vicinity, it was confirmed that the conductor is lifted only slightly from inside the stator (1) when the gripping mechanism is lifted with a thrust of up to 2000 kg. This proves that the gripping force and thrust are capable of moving the conductor inside the stator (1).

[0028] However, since the wire is connected on the circumference both above and below, the area where the stator (1) is pressed is limited, and therefore, each sheet of thin silicon steel plate constituting the stator (1) is separated and deformed as the wire moves, and the width of the slot (2b) is narrowed, so the resistance of the wire during drawing increases rapidly, and it stops moving at all from the middle, so the deformation of the silicon steel plate only increases, and it was found that it cannot be physically removed by this method.

[0029] Experiment 2 Wire press extrusion method in slot (2b)

[0030] The upper conductor (4U) and lower conductor (4L) at both ends of the stator (1) were cut along the stator surface (3U, 3L) so that the slot (2b) was fully visible. A bundle of conductors (4M) (not shown in FIG. 1 / see FIG. 2) bonded with resin or the like remained inside the slot (2b). Hereinafter, the stator (1) that has undergone such treatment is referred to as the completed stator (1A). A hole larger than the slot (2b) was drilled in the reference surface, and the completed stator (1A) was placed on the reference surface with the slot (2b) and the hole aligned, and a press rod was hydraulically pushed in from the top of the slot (2b). In this case, since the area around the slot (2b) is in contact with and supported by the reference surface, the silicon steel plate does not deform, and it was possible to extrude by applying an appropriate force to the press rod.

[0031] Experiment 1 was performed in a range of 60 degrees of the completed stator (1A) (the number of slots (2b) was 8 to 12), but as in Experiment 2, it was possible to extrude the wire bundle (4M) with significantly less force for each slot (2b).

[0032] However, in the case of the above method, the following tasks 3 to 6 occur.

[0033] Assignment 3

[0034] As shown in FIG. 1, the height (5) of the slot (2b) is considerably longer than the cross-sectional dimension of the slot (2b). Therefore, when a thin, long press rod is inserted into the slot (2b) with great force, the part inserted into the slot (2b) is guided by the inner wall of the slot (2b) and does not bend. However, when the press rod is first inserted into the slot (2b), most of the press rod is exposed from the slot (2b), so there is a problem that the press rod buckles due to the pressure. Experiment 2 was conducted by inserting multiple short rods sequentially, so no buckling occurred, but it is difficult to adopt the same method in commercial equipment.

[0035] Assignment 4

[0036] When chucking the outer diameter of the stator (1), the chuck mechanism (such as a chuck housing) shields the entire upper and lower surface of the stator, and because it interferes with the chuck mechanism, the wire bundle (4M) inside the slot (2b) cannot be pressed and extruded. For the purpose of maximizing magnetic efficiency, as shown in FIG. 1, the slot (2b) is close to the inner diameter of the stator (1). Therefore, even when chucking the central hole (2a) from the inside, if the chuck mechanism becomes even slightly larger outward than the central hole (2a), the wire bundle (4M) pressed and extruded interferes.

[0037] Assignment 5

[0038] When a press rod is pushed into a predetermined slot (2b) while the inner or outer diameter of the stator (1) is chucked, a press force is applied to the entire chuck mechanism. If the chucking force is weak, there is a risk that the stator (1) will become misaligned or tilted. On the other hand, if the chucking force is excessively strong, a problem arises where the silicon steel plate is deformed.

[0039] Assignment 6

[0040] In order to press and extrude the wire bundle (4M) inside the slot (2b) without deforming the silicon steel sheet, a support is required to firmly support the stator core around the slot. In order to separate the wire bundle (4M) from multiple slots, it is necessary to rotate the stator each time the wire 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 of solving the problem

[0041] The present invention discloses the following invention.

[0042] <Mode 1>

[0043] A stator core including a central hole and a plurality of slots around it, and

[0044] A wire bundle bonded within the slot, wherein the portion exposed from both ends of the stator core is cut off.

[0045] A wire bundle separation device for separating the wire bundle from a stator including,

[0046] Stay and,

[0047] A press actuator at the upper part of the above stay, and

[0048] A press unit comprising a lower base of the stay including a cavity through which the wire bundle can pass and a support around the cavity, a press rod driven vertically along an axis by the press actuator, and a rotating device for intermittently rotating the stator.

[0049] delete

[0050] A wire bundle separation device characterized by the rotating device intermittently rotating the stator so that one of the slots aligns with the axis, and the press actuator lowering the press rod, thereby allowing the press rod to penetrate the slot while the lower surface of the stator core is supported by the support member, and extruding the wire bundle from the slot.

[0051] delete

[0052] <Mode 2>

[0053] A table including an opening through which the above zone, fixed to the main body of the device, can pass, and

[0054] A linear guide that guides the stay fixed to the main body of the device up and down, and

[0055] Balance spring that pushes the above stay upward

[0056] Includes more,

[0057] The stay is supported such that the upper surface of the base is positioned below the table by the balance between the weight of the press unit and the buoyancy of the balance spring.

[0058] A wire bundle separation device of Embodiment 1, characterized in that the support member rises to a position where it contacts the lower surface of the stator core on the table by applying the negative force of the above-mentioned press rod to the stator on the table.

[0059] <Mode 3>

[0060] The above-mentioned rotating device has a chuck housing having an outer shape that can pass through the above-mentioned central hole, and

[0061] A plurality of chuck jaws capable of sliding in the radial direction at different angle positions of the chuck housing, and

[0062] A rotary actuator that intermittently rotates the above chuck housing

[0063] A chuck unit including,

[0064] The above chuck unit,

[0065] The upper part of the chuck housing is positioned at an origin height below the table,

[0066] A first operating height at which the chuck jaw can engage with the central hole of the stator mounted on the table above, and

[0067] A second operating height above the first operating height mentioned above

[0068] A linear actuator that moves up and down between three height positions

[0069] A wire bundle separation device of Embodiment 1 characterized by including

[0070] <Mode 4>

[0071] The above chuck unit is,

[0072] A tapered axis capable of vertical movement within the central shaft hole of the above chuck housing, and

[0073] A cam follower that drives the chuck jaw outward in the radial direction by sliding against the above-decreasing tapered shaft, and

[0074] A fluid pressure actuator that drives the above-mentioned tapered shaft up and down within the shaft hole

[0075] A wire bundle separation device of embodiment 3 characterized by including

[0076] <Mode 5>

[0077] The above rotary actuator,

[0078] A hollow rotating shaft and,

[0079] Driving fluid conduit passing through the above hollow rotating shaft

[0080] Includes more,

[0081] One end of the above driving fluid pipeline is connected to the above fluid pressure actuator, and

[0082] A wire bundle separation device of embodiment 4, characterized in that the other end of the above-mentioned driving fluid conduit is connected to a swivel joint.

[0083] <Mode 6>

[0084] The above press unit further includes a guide member comprising a guide hole that guides the press rod formed on the axis, and

[0085] The above press rod includes a tip portion and a base portion having a cross-sectional shape with a second moment of area greater than that of the tip portion, and

[0086] A wire bundle separation device of Embodiment 1, characterized in that the guide hole includes a cross-sectional shape through which both the tip portion and the base portion can pass.

[0087] <Mode 7>

[0088] Using a wire bundle separator,

[0089] A stator core including a central hole and a plurality of slots around it, and

[0090] A wire bundle bonded within the slot, wherein the portion exposed from both ends of the stator core is cut off.

[0091] A wire bundle separation method for separating the wire bundle from a stator including,

[0092] The above wire bundle separation device is,

[0093] Stay and,

[0094] A press actuator at the upper part of the stay, a base at the lower part of the stay including a cavity through which the wire bundle passes and a support around the cavity, a press rod driven vertically along an axis by the press actuator, and a rotating device for intermittently rotating the stator.

[0095] delete

[0096] A method for separating a wire bundle, comprising a press unit including a stator, wherein the rotating device intermittently rotates the stator so that one of the slots aligns with the axis, and the press actuator lowers the press rod, thereby allowing the press rod to penetrate the slot while the lower surface of the stator core is supported by the support member, and the wire bundle is extruded from the slot.

[0097] delete

[0098] delete Brief explanation of the drawing

[0099] FIG. 1 shows the structure of a stator of various xEV motors. FIG. 2 is a side cross-sectional view of a wire bundle separation device (6) of one embodiment of the present invention. FIG. 3 is a plan view of a wire bundle separation device (6). FIG. 4 shows a chuck unit (10). (a) is a plan view of the lumbar region. (b) is a side cross-sectional view. FIG. 5 shows a press unit (30) and a retractable unit (50). (a) is a plan view of the lumbar region. (b) is a side cross-sectional view. FIG. 6 is a side view and a top view of the press rod (34) and the guide member (35), and a cross-sectional view of the press rod (34) and the guide member (35) at positions C, D, E, and F. Specific details for implementing the invention

[0100] Hereinafter, a wire bundle separation device (6) of one embodiment of the present invention will be described.

[0101] As described above with reference to FIG. 1, the stator (1) comprises a stator core (2) having a central hole (2a) and a slot (2b) formed around the central hole (2a), and a winding (4) wound around the slot (2b) and fixed by bonding with resin or the like. Among the windings, the portions exposed from the upper and lower surfaces (3U, 3L) of the stator core (2) are respectively called the upper winding (4U) and the lower winding (4L).

[0102] A stator (1) that has had its upper winding (4U) and lower winding (4L) cut off from the stator core (2) by cutting the stator (1) or similar processes is called a finished stator (1A). A bundle of wires (4M) that is bonded and fixed with resin or the like remains in the slot (2b) of the finished stator (1A). The finished stator (1A) is the object to be processed by the wire bundle separation device (6). The wire bundle (4M) is the part from which the upper winding (4U) and lower winding (4D) of the winding (4) have been cut off. The wire bundle (4M) typically has a cross-sectional shape roughly identical to that of the slot (2b). The purpose of the wire bundle separation device (6) is to separate the wire bundle (4M) by extruding it from the slot (2b) of the finished stator (1A).

[0103] FIGS. 2 and 3 show a wire bundle separation device (6) according to one embodiment of the present invention. FIG. 2 is a side view and FIG. 3 is a top view. The wire bundle separation device (6) includes a device body (64), a table (60), a press unit (30), and a chuck unit (10). The wire bundle separation device (6) may further include a reciprocating unit (50) for driving the press unit (30) back and forth, a fluid pressure unit (fluid pressure source) (70) for driving various actuators, a control panel (80) ( FIG. 3), etc.

[0104] 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) through a cylinder rod joint (41) and a press rod joint (42), and a base (37) having a cavity (or concave part) (37a) formed extending from the lower end of the stay (33). The press rod (34) is driven up and down along the axis (drive shaft) (L) by the press actuator (31). The stay (33) and the base (37) may be a single member. The cavity (37a) is located on the axis (L) of the press rod (34) and has a shape / size through which a wire bundle (4M) can pass. In order to accommodate multiple types of stators (1) including slots (2b) of different shapes / sizes, the cavity (37a) may be shaped / sized such that all of the wire bundles (4M) within the slots (2b) of multiple shapes / sizes can pass through. Although FIG. 5 shows a straight cavity (37a), the cavity (37a) may be curved, bent, etc. in the middle.

[0105] The forward / backward unit (50) may include a linear guide (39) fixed to the main body of the device (64), a support (51) that can slide back and forth along the linear guide (39), and a vertical linear guide (36) mounted on the support (51), and the stay (33) of the press unit (30) may be slidable vertically along the linear guide (36).

[0106] The press unit (30) may include a linear position sensor (32) for detecting the position of the stay (33) on the linear guide (36). The advance / retreat unit (50) may include an actuator for driving the slide of the support (51) or a sensor for detecting the position of the press unit (30).

[0107] The wire bundle separation device (6) may also include a balance spring (38) inserted between the linear guide (39) and the stay (33). That is, the stay (33) is guided up and down by the linear guide (36) and is supported upward by the balance spring (38). Accordingly, the press unit (30) in a no-load state is stopped at a height position (balance position) where the weight of the press unit (30) and the supporting force of the balance spring (38) are balanced, and can move up and down from the balance position with a small external load. In the wire bundle separation device (6) of this example, the dimensions and strength of the balance spring (38), etc., are set so that when the press unit (30) is in the balance position, the upper surface (37b) of the base (37) is located below the table (60) (reference point (Hr)).

[0108] As shown in FIG. 3, an opening (61) is formed in the table (60). The opening (61) may have a shape / size through which the chuck housing (15) (Fig. 4), or additionally, the leg (37) (or the leg (37) and the stay (33)) can pass. The opening (61) may include a circular portion (61a) through which the chuck housing (15) passes and an additional portion (61b) through which the leg (37) (or the leg (37) and the stay (33)) pass. The table (60) includes rollers (65, 66), and the finished stator (1A) can move on the table (60) with a small force as indicated by the arrow in FIG. 3.

[0109] FIG. 4 shows a chuck unit (10). The chuck unit (10) includes a chuck housing (15) having an outer shape that can pass through a central hole (2a) of a finished stator (1A), a chuck jaw (11) that can slide within a groove 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 finished stator (1A) by engaging with the central hole (2a) by sliding the chuck jaw (11) outward in the radial direction. FIG. 4 shows an example of a three-way chuck including three chuck jaws (11) arranged at 120-degree intervals, but the angular intervals or the number of chuck jaws (11) can be changed. Since the inner diameter of the central hole (2a) may vary depending on the type of stator (1), the chuck jaw (11) or the tip of the chuck jaw (11) may be interchangeable according to the inner diameter of the central hole (2a).

[0110] The wire bundle separation device (6) may additionally include a linear actuator (23) that drives the chuck unit (10) up and down. The linear actuator (23) drives the chuck unit (10),

[0111] - Origin height (H0) where the top of the chuck housing (15) is located below the table (60),

[0112] - A first operating height (H1) at which a chuck jaw can engage with the central hole (2a) of a finished stator (1A) placed on a table (60), and

[0113] - Second operating height (H2) above the first operating point,

[0114] It is possible to move it between three different heights (H0 to H2).

[0115] In the drawing, Hr represents the height position (reference point (Hr)) of the surface of the table (60). The origin height (H0) is located slightly below the reference point (Hr).

[0116] In order to stabilize and ensure the movement of the chuck unit (10) between three heights (H0 to H2), and / or to facilitate control, the linear actuator (23) is preferably a dual cylinder formed by connecting two linear cylinders (23a, 23b) in tandem.

[0117] To stabilize the operation of the linear actuator (23), a guide rod (24) that supports the chuck unit (10) and a linear bush (25) that guides the guide rod (24) may be provided.

[0118] The chuck unit (10) may additionally include a tapered shaft (17) that can move up and down within an axial hole formed in the center of the chuck housing (15), a cam follower (12) that drives the chuck jaw (11) outward in the radial direction by sliding against 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 additionally include a return spring (14) that pushes each chuck jaw (11) inward in the radial direction.

[0119] When the tapered shaft (17) rises due to the driving of the fluid pressure actuator (28), the cam follower (12) slides against the tapered shaft (17), causing the chuck jaw (11) to be driven outward in the radial direction. When the tapered shaft (17) falls, the chuck jaw (11) is driven inward in the radial direction by the negative force of the return spring (14).

[0120] The cam follower (12) may include a roller (12a) that rotates in sliding motion on a tapered shaft (17), and a rotating shaft (12b) that supports the roller (12a) and has both ends supported by a chuck jaw (11). The tapered shaft (17) may include an inclined plane (18) at a position corresponding to the roller (12a) of each chuck jaw (11). Sliding stability is improved by sliding the roller (12a) on the inclined plane (18).

[0121] The rotary actuator (21) may include a hollow rotating shaft, and a driving fluid conduit (20) may be passed through the hollow rotating shaft. One end of the driving fluid conduit (20) may be connected to a fluid pressure actuator (28), and the other end may be connected to a swivel joint (22). As a result, fluid pressure control is realized through the 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).

[0122] The press unit (30) may additionally 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 top view of a press rod (34) and a guide member (35) in a preferred form, and cross-sectional views of the press rod (34) and the guide member (35) at positions C, D, E, and F.

[0123] The press rod (34) may include a tip portion (34a) and a base portion (34b) having a cross-sectional shape with a second moment of area greater than that of the tip portion (34a). In the example of the drawing, the press rod (34) has a tip portion (34a) that is shaped to be inserted into a slot (2b) (e.g., flat shape), and a base portion (34b) that has a cross-sectional shape with a second moment of area greater than that of the tip portion (34a).

[0124] The guide member (35) may include a guide hole (35a) for guiding the press rod (34). The guide hole (35a) may be located on the axis (L) of the press rod (34). It is preferable that the guide hole (35a) have a cross-sectional shape through which both the tip portion (34a) and the base portion (34b) of the press rod (34) can pass.

[0125] As the press rod (34) descends and comes into contact with the stator (1), and as the press rod (34) is inserted into the slot (2b), an axial force acts on the press rod (34), so the press rod (34) may buckle. However, in the press unit (30), the leading end (34a) is guided into the guide hole (35a), and the base end (34b) has a large moment of inertia, so buckling of the press rod (34) can be prevented. The length of the leading end (34a) may be approximately equal to or slightly larger than the height (5) of the stator core (2). The length of the guide member (35) may be approximately equal to the height (5) of the stator core (2).

[0126] In order to accommodate multiple types (models) of processing completion stators (1A) with different slot shapes, the tip portion (34a) may be shaped and sized so that it can be inserted into any of the slots (2b) of the various processing completion stators (1A). For example, the tip portion (34a) may be shaped and sized so that it can be inserted into any of the slots (2b) of the various processing completion stators (1A).

[0127] In FIG. 6, a rectangular slot (2b) (Fig. 1(a) to (c)) is assumed, and a rectangular combined shape press rod (34) and guide hole (35a) are shown, but in the case of a slot (2b) of a different shape (Fig. 1(d) to (f)), the shape of the press rod (34) and guide hole (35a) can be changed accordingly.

[0128] The wire bundle separation device (6) may include a control device not shown, composed of a computer or a storage medium, for operation control by a computer.

[0129] Hereinafter, a method for separating a wire bundle according to one embodiment of the present invention (a method of operating a wire bundle separation device (6)) will be described.

[0130] Preparation

[0131] Step 1: The chuck unit (10) is supported at an origin height (H0) by a rotary actuator (21) so that the top of the chuck housing (15) is positioned below the table (60).

[0132] Step 2: The strength of the balance spring (38) is adjusted so that the upper surface (37b) of the base (37) is positioned slightly lower than the table (60).

[0133] Step 3: Retract the press unit (30) on the linear guide (39) to the position furthest from the chuck unit (10).

[0134] Step 4: A press rod (34) and a guide member (35) according to the type of stator (1A) of the work object are mounted on the tip of the press actuator (31) through the cylinder rod joint (41) and the press rod joint (42).

[0135] Step 5: The driving distance of the press actuator (31) according to the press start position of the press rod (34) or the height (5) of the stator (1) may be stored in advance in a storage medium, etc.

[0136] By following steps 1 to 5 above, it is possible to move the completed stator (1A) freely on the table (60) without interfering with members such as the chuck housing (15), base (37), and press rod (34) (see arrow in FIG. 3).

[0137] Import, positioning, etc.

[0138] Step 6: Slide the completed stator (1A) on the table (60) and place it at the position of the opening (61a).

[0139] Step 7: The chuck unit (10) is raised to a first operating height (H1) by driving the linear actuator (23). As a result, the chuck jaw (11) is raised to a height where it can chuck the central hole (2a).

[0140] Step 8: The tapered shaft (17) is raised by driving the fluid pressure actuator (28). As a result, the chuck jaw (11) moves outward in the radial direction and comes into contact with the inner side of the central hole (2a) of the finished stator (1A), and the finished stator (1A) is chucked.

[0141] Step 9: The chuck unit (10) is raised to a second operating height (H2) by driving the linear actuator (23). As a result, the finished stator (1A) is separated from the table (60). Thus, it is possible to freely rotate the finished stator (1A) without interfering with the table (60).

[0142] Step 10: Advance the press unit (30) along the linear guide (39) to a specified position according to the type of finished stator (1A). Fine adjustment may be performed manually. If the rotational position of the finished stator (1A) is misaligned, rotate the rotary actuator (21) so that the slot (2b) is positioned on the axis (L). Rotation can be done manually, and the alignment can be determined visually.

[0143] Extrusion separation of wire bundle (4M)

[0144] Step 11: The press rod (34) is lowered by driving the press actuator (31) according to the following steps 11-1 and 11-2.

[0145] Step 11-1: When the press rod (34) descends and its tip contacts the wire bundle (4M), and the downward negative force exerted by the press actuator (31) acts on the finished stator (1A), the press unit (30) rises along the linear guide (36) due to the negative force. Since the press unit (30) is supported in a state where its weight and the negative force of the balance spring (38) are balanced, it moves upward with a small amount of force. Therefore, the press rod (34) does not descend and can maintain the position (contact position) where the tip of the press rod (34) contacts the wire bundle (4M). During this time, almost no force is applied to the finished stator (1A) and the chuck jaw (11).

[0146] Step 11-2: When the upper surface (37b) of the base (37) comes into contact with the lower surface of the stator core (2), the upward movement of the press unit (30) is terminated, and instead, the downward movement of the press rod (34) from the contact position begins. Since the lower surface of the stator core (2) is supported by the upper surface (37b) of the base (37) and cannot move downward, the press rod (34) penetrates into the slot (2b), and the wire bundle (4M) is extruded from the slot (2b) into the cavity (37a). Since the periphery of the slot (2b) is supported by the upper surface (37b) of the base (37), deformation of the silicon steel plate or deformation of the slot (2b) shape caused by this can be prevented. The extruded wire bundle (4M) is recovered into the recovery box (63) via the chute (62) (Fig. 2).

[0147] Step 12: When the extrusion of the wire bundle (4M) is completed, the press rod (34) is raised to an initial position by driving the press actuator (31). 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 completed stator (1A).

[0148] Step 13: After confirming the rise of the press rod (34) to its initial position, the chuck unit (10) (processing completion stator (1A)) is rotated by the drive of the rotary actuator (21) until the next slot (2b) aligns with the axis (L) of the press rod (34). As described in Step 9, the processing completion stator (1A) can rotate freely.

[0149] Step 14: Afterwards, by repeating steps 11 to 13, the wire bundles (4M) of all slots (2b) can be separated.

[0150] Processing Complete Status (1A) Opening, taking out, etc.

[0151] Step 15: When the separation of the wire bundles (4M) of all slots (2b) is completed, the linear actuator (23) lowers the chuck unit (10) to a first operating height (H1), and then the fluid pressure actuator (28) lowers the tapered shaft (17), thereby opening the chuck of the completed stator (1A) by the chuck unit (10), and then the linear actuator (23) lowers the chuck unit (10) to a home height (H0). After that, the press unit (30) is retracted to a retracted position on the linear guide (39).

[0152] Step 16: Using the rotation of the rollers (65, 66), the completed stator (1A) is slid on the table (60) and removed from the device.

[0153] Afterwards, by repeating steps 6 to 16, it is possible to separate the wire bundle (4M) for multiple completed stators (1A).

[0154] All or part of the above steps 6 to 16 can be operated automatically by controlling actuators (21, 23, 28, 31), etc., by a control device, etc. In particular, it is preferable to operate steps 11 to 15 automatically.

[0155] According to the above wire bundle separation device (6), the wire bundle (4M) is extruded from the slot (2b) by inserting the press rod (34) into the slot (2b) while the lower surface of the stator core (2) (around the slot (2b)) is supported by a zone (37) that includes a cavity (37a) through which the wire bundle (4M) on the axis (L) of the press rod (34) can pass. Therefore, the wire bundle (4M) in a strongly bonded state within the slot (2b) can be extruded and separated without causing deformation of the silicon steel plate, and without chucking the finished stator (1A) with excessive force.

[0156] In addition, since the stay (33) is guided to move up and down by the linear guide (36) and the stay (33) is supported by the balance spring (38) so that the base (37) is positioned below the table (60), the completed stator (1A) can be moved on the table (60) without interfering with the base (37), and the stator core (2) can be supported by the base (37) during the extrusion separation of the wire bundle (4M). Since the lower surface of the stator core (2) is supported by the base (37), it is possible to extrude and separate the wire bundle (4M) without applying almost any external force to the stator core (2) or the chuck jaw (11).

[0157] Additionally, since the chuck housing (15) can pass through the central hole (2a) and the chuck jaw (11) engages with the central hole (2a) from the inside to chuck the completed stator (1A), and the chuck housing (15) can be moved up and down between the origin height (H0), the first operating height (H1), and the second operating height (H2) by the linear actuator (23), the blocking of the slot (2b) by the chuck housing (15) can be prevented, and the completed stator (1A) can be moved on the table (60) without interfering with the chuck housing (15), and it is also possible to rotate the completed stator (1A) without contacting the table (60).

[0158] Since the cam follower (12) is driven outward in the radial direction by sliding it against a tapered shaft that moves up and down by a fluid pressure actuator (28) in the shaft hole at the center of the chuck housing, an excessive gripping force is prevented from being applied to the finished stator (1A) when chucking the finished stator (1A), thereby preventing deformation of the silicon steel plate or slot (2b) due to the excessive gripping force and the difficulty in extrusion separation of the wire bundle (4M) caused by this. To prevent excessive gripping force, it is preferable that the fluid pressure actuator (28) be pneumatic and operated at a preset pressure.

[0159] In addition, a hollow rotating shaft is provided in the rotary actuator (21), and a driving fluid conduit (20) is passed through the hollow rotating shaft. Since both ends of the driving fluid conduit (20) are connected to a fluid pressure actuator (28) and a swivel joint (22), it is possible to supply working fluid to the fluid pressure actuator (28) that moves up and down and rotates.

[0160] In addition, by providing a guide member (35) including a guide hole (35a) on the axis (L), and having the base portion (34b) of the press rod (34) have a larger second moment of area than the tip portion (34a), and by making the guide hole (35a) a cross-sectional shape through which both the tip portion (34a) and the base portion (34b) can pass, it is possible to prevent buckling of the press rod (34) during the extrusion of the wire bundle (4M).

[0161] The wire bundle separation device (6) and the dimensions, shape, arrangement, number, materials, etc. of the elements described in the above embodiment are examples, and other embodiments are possible. For example, when the processing completion stator (1A) is brought in / out using a robot or the like and the chuck unit (10) chucks the processing completion stator (1A) at the receiving position, the table (60) and linear guide (39), etc., 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 processing completion stator (1A) is rotated using a robot or the like, the chuck unit (10) can be omitted. Explanation of the symbols

[0162] 1: Status 1A: Processing Complete Status 2: Status Core 2a: Center hole 2b: Slot 3U, 3L: Stator surface 4: Reel 4U: Phase winding 4L: Lower winding 4M: Wire bundle 5: Slot height 6: Wire bundle separator 10: Chuck Unit 11: Chuck Joe 12: Cam Follower 12a: Roller 12b: Rotation axis 14: Return Spring 15: Chuck Housing 17: Tapered axis 18: Inclined plane 20: Driving fluid pipeline 21: Rotary actuator 22: Swivel joint 23: Linear Actuator 24: Guide pole 25: Linear Bush 28: Fluid pressure actuator 30: Press Unit 31: Actuator for presses 32: Linear position sensor 33: Stay 34: Press rod 34a: Tip 34b: Base 35: No guidance 35a: Guide hole 36: Linear Guide 37: Zone 37a: Common 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: Opening 61a: Circular part 61b: Additional part 62: Shooter 63: Recovery Box 64: Device body 65, 66: Roller 70: Fluid pressure unit 80: Control panel H0: Origin height H1: 1st operation height H2: Second movement height Hr: Reference point L: Axis

Claims

Claim 1 A wire bundle separation device for separating a wire bundle from a stator comprising a stator core including a central hole and a plurality of slots around the same, and a wire bundle bonded within the slots, wherein the portions exposed from both ends of the stator core are cut off, the device comprises a stay, a press actuator at the upper end of the stay, a support at the lower end of the stay including a cavity through which the wire bundle can pass and a support around the cavity, a press rod driven up and down along an axis by the press actuator, and a press unit including a rotating device for intermittently rotating the stator, wherein the rotating device intermittently rotates the stator so that one of the slots coincides with the axis, and the press actuator lowers the press rod, thereby allowing the press rod to penetrate the slot while the lower surface of the stator core is supported by the support, and the wire bundle is extruded from the slot. Claim 2 A wire bundle separation device according to claim 1, further comprising a table including an opening through which the support member fixed to the main body of the device can pass, a linear guide that guides the stay fixed to the main body of the device up and down, and a balance spring that supports the stay in an upward direction, wherein the stay is supported such that the upper surface of the support member is positioned below the table by the balance of the weight of the press unit and the support force of the balance spring, and the stay is raised to a position where the support member contacts the lower surface of the stator core on the table by applying the support force of the press rod to the stator on the table. Claim 3 A wire bundle separator according to claim 2, wherein the rotating device comprises: a chuck housing having an outer shape passable through the central hole; a plurality of chuck jaws slidable in the radial direction at different angular positions of the chuck housing; a chuck unit including a rotary actuator that intermittently rotates the chuck housing; and a linear actuator that moves the chuck unit up and down between three height positions, the origin height at which the top of the chuck housing is positioned below the table, the first operating height at which the chuck jaws can engage with the central hole of the stator mounted on the table, and the second operating height above the first operating height. Claim 4 delete Claim 5 delete Claim 6 A wire bundle separation device according to claim 1, wherein the press unit further comprises a guide member including a guide hole that guides the press rod formed on the axis, the press rod comprises a tip portion and a base portion having a cross-sectional shape with a second moment of area greater than that of the tip portion, and the guide hole has a cross-sectional shape through which both the tip portion and the base portion can pass. Claim 7 A method for separating a wire bundle from a stator comprising a central hole and a plurality of slots surrounding it, and a wire bundle bonded within the slots, wherein the portions exposed from both ends of the stator core are cut off, using a wire bundle separation device, wherein the wire bundle separation device comprises a stay, a press actuator on the upper part of the stay, a base on the lower part of the stay comprising a cavity through which the wire bundle passes and a support portion surrounding the cavity, a press rod driven up and down along an axis by the press actuator, and a press unit comprising a rotary device for intermittently rotating the stator, wherein the rotary device intermittently rotates the stator so that one of the slots coincides with the axis, and the press actuator lowers the press rod, thereby causing the press rod to penetrate 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. Bundle separation method.

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