JP6831573B2 - Taping device and taping method - Google Patents

Description

The present invention relates to a taping device and a taping method for attaching an insulating tape to a wire rod, and more particularly to a taping device and a taping method suitable for insulating a cross wire in a core winding of a rotary electric machine (rotary electric machine).

For example, in a rotary electric machine such as a motor or a generator, the divided cores having the same phase are connected by a crossover. When this crossover crosses a split core of different phases, a short circuit occurs if the interphase insulation is not maintained, which leads to a failure of the rotating electric machine. Therefore, it has been conventionally practiced to protect the crossover with an insulating material such as insulating tape. It is done.

Patent Document 1 describes a connecting coil winding device in which a wire rod is continuously wound around a plurality of divided cores and the coils of the plurality of divided cores are connected by a crossover to form a connecting coil. In this winding device, a taping machine for attaching an insulating tape to a crossover between coils is provided.

This taping machine is provided between a wire rod supply machine that supplies a wire rod to be a coil and a spindle machine that rotates the split core in order to wind the supplied wire rod around the split core in a connecting coil winding device. Insulation tape is attached to a predetermined position of the wire rod based on a command from the controller. More specifically, the taping machine winds a wire around one split core to form a coil, and then connects the wire between the split cores before winding the wire around the next split core. It is configured to attach an insulating tape to the part to be.

The actual tape sticking process in the taping machine described in Patent Document 1 is performed as follows. First, as shown in FIG. 10A, the insulating tape 102 with the adhesive surface facing up is adsorbed on the upper surface of the taping table 101 having the groove 100 with a negative pressure (adsorption step), and the taping table 101 is in this state. As shown in FIG. 10 (b), the crossover line 103 is fitted into the groove 100 together with the insulating tape 101 (tape pulling step). Then, as shown in FIG. 10C, the chuck plates 104 and 105 on both sides are moved so as to approach each other, and the insulating tape 102 is sandwiched between the chuck plates 104 and 105 from both sides in the radial direction of the crossover 100. Insulating tape is attached by overlapping the adhesive surfaces (pasting process). Next, as shown in FIG. 10D, the taping table 101 is lowered to discharge the taped crossover 103 from the groove 100.

Japanese Unexamined Patent Publication No. 2010-58857

However, according to the conventional taping machine described in Patent Document 1, after fitting the crossover wire and the insulating tape into the groove, the insulating tape is sandwiched between the chuck plates so as to be brought into close contact with the crossover wire. Therefore, in order for the insulating tape and the crossover wire to be brought into close contact with each other, the groove width of the taping machine must be a constant dimension close to the outer diameter of the crossover wire. That is, since the chuck plate only pushes the free end portion of the flexible insulating tape in the positioned state, it is necessary to set the groove width to a constant dimension close to the outer diameter of the crossover wire. If the groove width is large with respect to the outer diameter of the crossover wire, the insulating tape does not come into close contact with the peripheral surface of the crossover wire, so that reliable taping cannot be performed. On the contrary, when the groove width is close to the outer diameter of the crossover, taping cannot be performed on the crossover having a width exceeding the groove width or the bent crossover.

Therefore, in order to tap on crossovers with different wire diameters using a conventional taping machine, it is necessary to replace the taping table with a taping table having a groove width corresponding to the wire diameter, and multiple types of taping tables are used in advance. It was required to have them aligned. This not only led to an increase in manufacturing cost in order to prepare a plurality of taping stands, but also required management of these multiple taping stands. In addition, it was necessary to add a complicated process of replacing the taping table. Further, according to the conventional taping machine described in Patent Document 1, as shown in FIG. 10D, the insulating tape 102 must be provided with a gripping allowance (pinching allowance) 102a, which means that the insulating tape is effectively used. There was also a problem from the point of view.

Furthermore, since the conventional taping machine described in Patent Document 1 has a structure in which an insulating tape is sandwiched between chuck plates and attached to a crossover portion, the insulating tape is uniformly and evenly attached to the peripheral surface of the crossover portion. Was difficult.

In addition, since this conventional taping machine is incorporated in the connecting coil winding device and is configured to perform taping in the winding process, the time increase due to taping is the same as the time of the entire winding process. It was reflected as an increase and contributed to the significant increase in winding line tact.

The present invention was devised in view of the current situation, and an object of the present invention is taping capable of reliable taping even for wire rods having different wire diameters without preparing a plurality of types of taping tables. The purpose is to provide an apparatus and a taping method.

Another object of the present invention is to provide a taping device and a taping method capable of effectively using an insulating tape.

Still another object of the present invention is to provide a taping device and a taping method capable of uniformly attaching an insulating tape to the peripheral surface of a wire rod.

Yet another object of the present invention is to provide a taping device and a taping method capable of taping in a post-process independent of the winding process.

The present invention provides a configuration in which the insulating tape is not pressed by a member having a specific shape such as a chuck plate, but the insulating tape is brought into close contact with the peripheral surface of the wire rod by an air injection pressure having no specific shape. Is what you do.

Specifically, according to the present invention, the taping device for attaching the insulating tape to the peripheral surface of the wire has an opening opened in one direction with an opening gap larger than the diameter of the wire, and the peripheral surface. A wire rod in a state where an insulating tape is adhered to a part of the housing is provided with a storage recess capable of accommodating the wire rod through the opening, and a plurality of air injection ports opened in the storage recess. The plurality of air injection ports are provided so that the insulating tape is pressed against the peripheral surface of the wire rod by the air injection pressure and attached.

After the insulating tape is accommodated in the accommodating recess through the opening together with the wire rod, air is injected from a plurality of air injection ports, and the insulating tape is pressed against the peripheral surface of the wire rod by the air injection pressure and attached. Since the opening is opened in one direction with an opening gap larger than the diameter of the wire rod, and the wire rod can be accommodated through the opening with the insulating tape adhered to a part of the peripheral surface. Wire rods having various wire diameters can also be accommodated in the accommodating recesses, and reliable taping can be performed. Moreover, even when taping wires with different wire diameters, it is not necessary to prepare multiple types of taping stands that can handle wires with different wire diameters, so the manufacturing cost can be increased by preparing multiple taping stands. Don't invite. In addition, the complicated work of replacing the taping table is not required, and the taping table itself is not required to be managed. Furthermore, since the insulating tape is not sandwiched between chuck plates and attached to the crossover portion, it is not necessary to provide a gripping allowance on the insulating tape, and the tape can be effectively used. Furthermore, the air injected from the injection port does not maintain a specific path, but hits the insulating tape and presses it all the way in any direction, so the insulating tape can be evenly and evenly attached to the peripheral surface of the wire. ..

It is preferable that the plurality of air injection ports are configured to open upward and / or downward in the inner portion opposite to the opening of the accommodating recess.

It is also preferable that a plurality of air injection ports are arranged along the longitudinal direction of the accommodating recess, and the plurality of air injection ports are arranged in two rows so as to face each other.

It is also preferable that a plurality of air injection ports are arranged in a row along the longitudinal direction of the accommodating recess. In this case, it is more preferable that the insulating tape is attached to the peripheral surface of the wire while rotating the wire or the accommodating recess in the circumferential direction of the wire.

It is also preferable that a plurality of air injection ports are arranged so as to be separated from each other along the longitudinal direction of the accommodating recess.

It further includes an air injection section having a storage recess and a plurality of air injection ports, and an air introduction section having an air reservoir communicating with the plurality of air injection ports of the air injection section. It has a plurality of flow paths that communicate with each of a plurality of air injection ports, and the air introduction part may have an air introduction port that is connected to an air supply source at one end and communicates with an air reservoir at the other end. preferable.

It is also preferable that the air injection part and the air introduction part are composed of independent members, and the accommodating recess of the air injection part is formed by combining and integrating independent members.

It is also preferable to further provide a moving means configured to move the accommodating recess or the wire rod and to accommodate the portion to which the insulating tape of the wire rod is attached in the accommodating recess. By providing such a moving means, the taping process can be performed in an independent process separate from the winding process, so that the taping does not increase the line tact of the winding.

According to the present invention, there is a taping method in which an insulating tape is attached to the peripheral surface of the wire rod, and the above-mentioned opening of the accommodating recess having an opening opened in one direction with an opening gap larger than the diameter of the wire rod. The wire rod and the insulating tape were accommodated in the accommodating recess and opened in the accommodating recess by attaching the insulating tape with the adhesive side to the outside so as to close the portion and inserting the insulating tape through the insulating tape to which the wire rod was attached. A taping method is provided in which an insulating tape is pressed against the peripheral surface of a wire rod by an air injection pressure to be attached by injecting air from a plurality of air injection ports.

According to the present invention, further, in a taping method in which an insulating tape is attached to the peripheral surface of the wire rod, the insulating tape is adhered to a part of the peripheral surface of the wire rod with an opening gap larger than the diameter of the wire rod. By inserting a wire rod coated with insulating tape through this opening of the accommodating recess having an opening opened in one direction, the wire rod and the insulating tape are accommodated in the accommodating recess, and the accommodating recess is provided. A taping method is provided in which an insulating tape is pressed and attached to a peripheral surface of a wire rod by an air injection pressure by injecting air from a plurality of air injection ports opened inside.

Since the opening is opened in one direction with an opening gap larger than the diameter of the wire rod, and the wire rod can be accommodated through the opening with the insulating tape adhered to a part of the peripheral surface. Wire rods having various wire diameters can also be accommodated in the accommodating recesses, and reliable taping can be performed. Moreover, even when taping wires with different wire diameters, it is not necessary to prepare multiple types of taping stands that can handle wires with different wire diameters, so the manufacturing cost can be increased by preparing multiple taping stands. Don't invite. In addition, the complicated work of replacing the taping table is not required, and the taping table itself is not required to be managed. Furthermore, since the insulating tape is not sandwiched between chuck plates and attached to the crossover portion, it is not necessary to provide a gripping allowance on the insulating tape, and the tape can be effectively used. Furthermore, the air injected from the injection port does not maintain a specific path, but hits the insulating tape and presses it all the way in any direction, so the insulating tape can be evenly and evenly attached to the peripheral surface of the wire. ..

According to the present invention, even wire rods having various wire diameters can be accommodated in the accommodating recesses, and reliable taping can be performed. Moreover, even when taping wires with different wire diameters, it is not necessary to prepare multiple types of taping stands that can handle wires with different wire diameters, so the manufacturing cost can be increased by preparing multiple taping stands. Don't invite. In addition, the complicated work of replacing the taping table is not required, and the taping table itself is not required to be managed. Furthermore, since the insulating tape is not sandwiched between chuck plates and attached to the crossover portion, it is not necessary to provide a gripping allowance on the insulating tape, and the tape can be effectively used. Furthermore, the air injected from the injection port does not maintain a specific path, but hits the insulating tape and presses it all the way in any direction, so the insulating tape can be evenly and evenly attached to the peripheral surface of the wire. ..

It is a schematic block diagram of the main part cross section of the taping apparatus which concerns on one Embodiment of this invention. It is an exploded perspective view of the air introduction part and the air injection part in the taping apparatus of FIG. It is sectional drawing explaining the taping operation in the taping apparatus of FIG. It is a perspective view explaining the case where the curved crossover line is supplied to the taping apparatus of FIG. It is sectional drawing explaining the taping operation in one modification mode of the taping apparatus of FIG. It is sectional drawing explaining the taping operation in another modification of the taping apparatus of FIG. It is a perspective view explaining an example of the structure which inserts the crossover wire in the core winding of a rotary electric machine into the taping apparatus of FIG. It is a front view explaining another example of the structure which inserts the crossover wire in the core winding of a rotary electric machine into the taping apparatus of FIG. It is a front view explaining the operation of the configuration example shown in FIG. It is a figure which shows the process of the taping method in the prior art.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. This embodiment targets a crossover wire connecting the coils of the split cores of a rotary electric machine as a wire rod to be taped with insulating tape, but the wire rod to be taped is not limited to this, and any kind of wire rod should be taped. It may be a wire rod.

As shown in FIG. 1, the taping device according to the present embodiment has a taping unit 10 composed of an air introduction unit 20 and an air injection unit 22, and air supplied to the taping unit 10, for example, air such as an air compressor. The supply source 11, the air supply path 12 having one end connected to the air supply source 11 and the other end connected to the air introduction portion 20 of the taping unit 10, and the solenoid valve 13 arranged in the middle of the air supply path 12. A control means 14 that controls the solenoid valve 13 to control air supply on / off, and a micro switch that detects that the cross wire 64, which is a wire to be taped, has been inserted to the bottom surface of the accommodating recess 62, for example. The wire rod sensor 15 is provided with a flexible air hose 16 forming a part of the air supply path 12, and a plug 17 connected to the tip of the air hose 16. The plug 17 is inserted and connected to the air introduction port 24 that opens on the back surface (the surface opposite to the side on which the crossover line 64 is inserted) of the air introduction portion 20 of the taping unit 10.

As described above, the taping unit 10 is integrally fixed to the air introduction portion 20 provided on the back side (the side opposite to the side where the crossover line 64 is inserted) and the air introduction portion 20. It is composed of an air injection unit 22 provided on the front side (the side into which the crossover line 64 is inserted). An accommodating recess 62 is provided on the front surface side of the air injection portion 22 so that the cross section perpendicular to the longitudinal direction thereof is U-shaped. The accommodating recess 62 has an opening 62A opened on the front side with an opening gap larger than the diameter of the crossover line 64 to be taped, and the crossover wire 64 is covered with an insulating tape 66 on a part of its peripheral surface. In this state, it can be inserted through the opening 62A. When the crossover 64 having the insulating tape 66 adhered to a part of its peripheral surface is inserted into the accommodating recess 62 and reaches the bottom surface of the accommodating recess 62 in the depth direction, the state is detected by the wire material sensor 15. Air is injected from both sides in the radial direction of the crossover line 64, and the insulating tape 66 is pressed by the air injection pressure and attached to the peripheral surface of the crossover wire 64.

As shown in FIG. 2, the air introduction portion 20 has a rectangular block shape, an air introduction port 24 to which the plug 18 is connected is formed on the back side thereof, and an air injection portion 22 is formed on the front side thereof. A fitting groove (fitting recess) 26 to be fitted is formed. Inside the air introduction portion 20, an air reservoir 28 that is open to the bottom surface 26a in the depth direction of the fitting groove 26 is formed, and the air reservoir 28 is connected to the air introduction port 24 via the ventilation path 30. Communicating.

The air injection unit 22 has a two-part structure composed of an upper member 38 and a lower member 40 that are overlapped and integrated with each other. On the front surface side of the lower member 40, a recess forming surface 42 having a curved back portion (back surface side) is formed so that the vertical cross section with respect to the longitudinal direction thereof has a semi-U shape. A plurality of small-diameter air injection ports 44 arranged apart from each other along the longitudinal direction (L direction in FIG. 2) are formed in the curved portion at the inner portion of the surface 42. These plurality of air injection ports 44 are configured to open upward from the concave portion forming surface 42. In this embodiment, the plurality of air injection ports 44 are arranged in a row at substantially equal intervals. The plurality of air injection ports 44 communicate with one end (front end) of the plurality of flow paths 46 formed inside the lower member 40, respectively. The other ends (rear ends) of the plurality of flow paths 46 are configured to communicate with the air reservoir 28 when the air injection portion 22 is fitted to the air introduction portion 20. A pair of fixing portions 48 are formed at both ends of the lower member 40 in the longitudinal direction (L direction in FIG. 2), and each of the pair of fixing portions 48 has an insertion hole 50 for fixing screws 32. Is formed.

The upper member 38 has the same shape as the lower member 40, and the lower member 40 is inverted upside down and combined with each other. That is, on the front surface side of the upper member 38, a recess forming surface 52 having a curved back portion (back surface side) is formed so that the cross section perpendicular to the longitudinal direction thereof has a semi-U shape. A plurality of small-diameter air injection ports 54 arranged apart from each other along the longitudinal direction (L direction in FIG. 2) are formed in the curved portion at the inner portion of the forming surface 52. These plurality of air injection ports 54 are configured to open downward from the concave portion forming surface 52. In the present embodiment, the plurality of air injection ports 54 are arranged in a row at substantially equal intervals. The plurality of air injection ports 54 communicate with one end (front end) of the plurality of flow paths 56 formed inside the upper member 38, respectively. The other ends (rear ends) of the plurality of flow paths 56 are configured to communicate with the air reservoir 28 when the air injection portion 22 is fitted to the air introduction portion 20. A pair of fixing portions 58 are formed at both ends of the upper member 40 in the longitudinal direction (L direction in FIG. 2), and each of these pair of fixing portions 58 has an insertion hole 60 for a fixing screw 32. It is formed. In FIG. 2, a part of the air injection port 54 and the flow path 56 of the upper member 38 is omitted.

In the air introduction portion 20, the air injection portion 22 fitted to the air introduction portion 20 is fixed to both ends in the longitudinal direction (L direction in FIG. 2) of the upper edge portion forming the fitting groove 26 downward. A pair of insertion holes 34 of the fixing screw 32 for the purpose are formed, and the fitted air is formed at both ends in the longitudinal direction (L direction in FIG. 2) of the lower edge portion forming the fitting groove 26 upward. A pair of screw holes 36 into which the fixing screws 32 for fixing the injection portion 22 are screwed are formed. A pair of insertion holes 34 and an air injection unit of the air introduction unit 20 in a state where the upper member 38 and the lower member 40 of the air injection unit 22 are integrated and fitted in the fitting groove 26 of the air introduction unit 20. A pair of fixing screws 32 are screwed into a pair of screw holes 36 of the air introduction portion 20 through a pair of insertion holes 60 of the upper member 38 of 22 and a pair of insertion holes 50 of the lower member 42, respectively. By combining, the air introduction unit 20 and the air injection unit 22 are fixed and integrated.

When the upper member 38 and the lower member 40 of the air injection portion 22 are overlapped and fixed, the recess forming surface 42 and the recess forming surface 52 are perpendicular to the longitudinal direction (L direction in FIG. 2). A housing recess 62 having a U-shaped cross section is formed. FIG. 3 is a cross section perpendicular to the longitudinal direction (L direction in FIG. 2) (cross section indicated by hatching in FIG. 1, cross section taken along line AA in FIG. 2), and the accommodating recesses 62, flow paths 46 and 56. , And the portions of the air injection ports 44 and 54 are shown in an enlarged manner. As shown in the figure, the accommodating recess 62 has an opening 62A having an opening gap d2 larger than the diameter d1 of the crossover line 64. Further, it has a width W1 (see FIG. 1) along the length direction of the crossover line 64 in the longitudinal direction (L direction in FIG. 2). As can be seen from these figures, the plurality of air injection ports 54 of the upper member 38 and the plurality of air injection ports 44 of the lower member 40 are arranged in two rows along the longitudinal direction at the inner portion of the accommodating recess 62. They are arranged, and as will be described later, the plurality of air injection ports 54 and 44 are opened so as to face each other.

Since the opening 62A of the accommodating recess 62 has an opening gap d2 larger than the diameter d1 of the crossover line 64, even when the crossover wire 64 has the insulating tape 66 adhered to a part of the peripheral surface. , It can be accommodated in the accommodating recess 62 through the opening 62A, and the work of attaching the insulating tape 66 to the crossover line 64 can be performed. Therefore, the crossover wires 64 having various wire diameters can be accommodated in the accommodating recesses 62, and reliable taping can be performed. Moreover, even when taping to crossover wires 64 having different wire diameters, it is not necessary to prepare a plurality of types of taping stands having groove widths having different wire diameters as in the prior art. Does not lead to an increase in manufacturing costs. In addition, complicated taping table replacement work is not required, and taping table management is not required.

As shown in FIG. 3, the air injection port 54 of the upper member 38 opens downward in the inner part of the accommodating recess 62, and the air injection port 44 of the lower member 40 is the inner part of the accommodating recess 62. The portion opens upward. Therefore, the air injection port 54 of the upper member 38 and the air injection port 44 of the lower member 40 are arranged so as to face each other. More specifically, as shown in FIG. 3A, the air injection port 44 of the lower member 40 and the air injection port 54 of the upper member 38 are in a state where their center positions m are accommodated in the accommodating recess 62. It is arranged slightly offset from the center 64a of the crossover line 64 toward the opening 62A of the accommodating recess 62. As a result, as shown in FIG. 3B, the air injection flow can be controlled so as to be directed to the portion where the insulating tape 66 of the crossover line 64 is not adhered, and the portion is effectively pressed and attached. be able to. Moreover, the temporary adhesive portion of the crossover line 64 located on the bottom surface side (back surface side) of the accommodating recess 62 can also be pressed to bring the insulating tape 66 into close contact. The distance between the plurality of air injection ports 44 and the flow path 46 of the lower member 40 and the plurality of air injection ports 54 and the flow path 56 of the upper member 38 in the longitudinal direction can be appropriately set, but the pressure of the insulating tape 66 is pressed. It is desirable that the injection flows from the adjacent air injection ports overlap each other so as not to cause unevenness.

Next, the taping operation in the taping device of the present embodiment will be described with reference to FIG.

FIG. 3A shows a state in which the crossover line 64 having the insulating tape 66 adhered to the front surface is accommodated in the accommodating recess 62, and FIG. 3B shows the insulating tape 66 being accommodated by the air injection pressure. It shows the state of being attached to the peripheral surface of 62.

As shown in FIG. 3A, first, the crossover line 64 or the taping unit 10 is driven by a driving device (not shown), and the crossover wire 64 having the insulating tape 66 adhered to the front surface moves relatively in the direction of the arrow. To do. However, it is assumed that the insulating tape 66 is cut to a length to be taped and its adhesive surface is located on the crossover line 64 side. In this state, the crossover line 64 moves further in the direction of the arrow, so that the crossover line 64 has an accommodating recess 62 via the opening 62A with the insulating tape 66 attached to a part of the peripheral surface thereof. Inserted inside. As the crossover line 64 moves further relatively, the width of the insulating tape 66 is narrowed on the side surface of the housing recess 62, and the insulating tape 66 is further attached to a part of the peripheral surface of the crossover line 64 and is relative to the inside of the housing recess 62 in the arrow direction. Proceed to. When the crossover line 64 reaches the bottom surface of the accommodating recess 62, the wire rod sensor 15 (see FIG. 1), which is a microswitch provided on the bottom surface, detects the arrival at the bottom surface of the crossover line 64, and outputs a detection signal to the control means 14. Will be done. Upon receiving the detection signal, the control means 14 controls the solenoid valve 13 to start supplying air to the taping unit 10. The wire rod sensor 15 may be a light transmission type sensor provided between the upper member 38 and the lower member 40 instead of the micro switch. Further, the air supply may be turned on / off manually.

When air is supplied to the taping unit 10, as shown in FIG. 3B, a crossover line 64 is transmitted from a plurality of air injection ports 54 of the upper member 38 facing each other and a plurality of air injection ports 44 of the lower member 40. Air is jetted toward the air, and the air jet flow presses the surface of the insulating tape 66 opposite to the adhesive surface side so that the insulating tape 66 adheres along the peripheral surface of the crossover line 64. As a result, the insulating tape 66 is completely adhered to the peripheral surface of the crossover line 64, and the sticking is completed instantly. The crossover 64 to which the insulating tape 66 is attached to the peripheral surface is taken out from the accommodating recess 62 and therefore from the taping unit 10.

As described above, according to the taping device of the present embodiment, the injection flows from the plurality of air injection ports 44 and the plurality of air injection ports 54 press the insulating tape 66 so as to trace the peripheral surface of the crossover line 64. Therefore, uniform sticking can be performed without uneven pressing (sticking unevenness). Strictly speaking, the air injected from the radial direction of the crossover line 64 also enters the gap between the bottom surface of the accommodating recess 62 and the insulating tape 66, so that uneven sticking does not occur over the entire peripheral surface of the crossover line 64. Moreover, in the present embodiment, unlike the prior art, it is not necessary to provide a gripping allowance for sandwiching the insulating tape between the chuck plates, so that the insulating tape 66 is not wasted and its effective use is possible. If the length of the insulating tape 66 is matched with the circumference of the crossover wire 64, more waste will occur. Of course, the insulating tape 66 may have a length in which the ends slightly overlap.

In the present embodiment, the crossover line 64 and the taping unit 10 are configured to be relatively moved. For example, the crossover line 64 may be arranged at a stationary position to move the taping unit 10, the taping unit 10 may be arranged at a stationary position to move the crossover line 64, or the taping unit may be moved. It may be configured to move both the 10 and the crossover line 64. Further, in the present embodiment, the crossover line 64 to which a part of the insulating tape 66 is attached is accommodated in the accommodating recess 62, and then the air injection is started, but the air is constantly injected. Even if the insulating tape 66 accommodates the crossover line 64 attached to a part of the peripheral surface thereof, the same taping is performed as a result. In the case of constant injection, it is not necessary to have a configuration in which the wire sensor 15 of the present embodiment detects and the control means 14 controls the solenoid valve 13.

As described above, in the taping unit 10 according to the present embodiment, the opening gap d2 of the opening 62A of the accommodating recess 62 is set to be larger than the diameter d1 of the crossover line 64 (see FIG. 3A). As shown in FIG. 4, even if the crossover line 64 is slightly bent, it can be accommodated in the accommodating recess 62 and the insulating tape 66 can be attached. Moreover, since the insulating tape 66 is pressed along the peripheral surface of the crossover wire 64 by the air injection pressure, even if the diameter of the crossover wire 64 is different or the crossover wire 64 is slightly bent, it depends on the air fluidity. The insulating tape 66 can be attached well. Therefore, one taping unit 10 can tap on crossovers having different wire diameters. Further, since the insulating tape 66 is attached by pressing with the air injection pressure, there is no concern that the insulating tape 66 will be damaged as compared with the method in which the insulating tapes are laminated and attached by the chuck mechanism as in the prior art.

Next, the taping operation in one modification of the taping device according to the embodiment of FIGS. 1 to 4 will be described with reference to FIG.

FIG. 5A shows a state in which the insulating tape 66 is held in the accommodating recess 62 of the taping unit and the crossover line 64 moves relative to the accommodating recess 62 in this modified mode. ) Indicates a state in which the crossover line 64 to which the insulating tape 66 is adhered is accommodated in the accommodating recess 62 in this modified mode.

In this modified mode, as shown in FIG. 5A, concave stepped portions 38a and 40a are formed on the front side of the upper member 38 and the lower member 40, that is, on the opening 62A side of the accommodating recess 62. There is. The insulating tape 66 is placed on the stepped portions 38a and 40a so as to close the opening 62A of the accommodating recess 62 with its adhesive surface facing the front side, or is sucked and held by negative pressure. In this state, the crossover line 64 or the taping unit 10 is driven by a driving device (not shown), the crossover line 64 moves relatively in the direction of the arrow, and the opening is in a state where the insulating tape 66 is attached to a part of the peripheral surface thereof. It is inserted into the accommodating recess 62 via 62A. As shown in FIG. 5B, as the crossover line 64 moves further relatively, the width of the insulating tape 66 is narrowed on the side surface of the accommodating recess 62, and the insulating tape 66 is further attached to a partial peripheral surface of the crossover line 64. While advancing relatively in the direction of the arrow in the accommodating recess 62. When the crossover line 64 reaches the bottom surface of the accommodating recess 62, the wire rod sensor 15 (see FIG. 1) provided on the bottom surface detects the arrival of the bottom surface of the crossover wire 64, outputs a detection signal to the control means 14, and emits an electromagnetic valve. 13 is controlled and air supply to the taping unit 10 is started. Subsequent operations are as described in connection with FIG. 3B in the above-described embodiment. Other configurations and operational effects in this modified mode are substantially the same as in the case of the embodiments of FIGS. 1 to 4.

Next, the taping operation in another modification of the taping device according to the embodiment of FIGS. 1 to 4 will be described with reference to FIG.

In FIG. 6, in this modified mode, the crossover line 64 in which a part of the insulating tape 66 is attached to the lower surface is accommodated in the accommodating recess 62, and the insulating tape 66 is attached to the peripheral surface of the crossover line 62 by air injection pressure. Indicates the state to be attached.

In this modified mode, as shown in FIG. 6, only one of the upper member 38 and the lower member 40, for example, the lower member 40, has a plurality of flow paths 46 communicating with the air reservoir 28 and a plurality of air injections. A mouth 44 is provided. In this state, the crossover line 64 or the taping unit is relatively moved in the direction of the arrow by a driving device (not shown), and is inserted into the accommodating recess 62 through the opening 62A with the insulating tape 66 attached to the lower surface thereof. Ru. When the crossover line 64 reaches the bottom surface of the accommodating recess 62, the wire rod sensor 15 (see FIG. 1) provided on the bottom surface detects the arrival of the bottom surface of the crossover wire 64, a detection signal is output to the control means 14, and the electromagnetic valve. 13 is controlled and air supply to the taping unit 10 is started. In this modified mode, as shown in FIG. 6, the air injection is performed while rotating the crossover line 64 by a driving device (not shown), whereby the insulating tape 66 is attached along the peripheral surface of the crossover wire 64. Become. When the insulating tape 66 is completely adhered to the peripheral surface of the crossover line 64 and the application is completed, the crossover wire 64 is taken out from the accommodating recess 62 and therefore from the taping unit 10. Other configurations and operational effects in this modified mode are substantially the same as in the case of the embodiments of FIGS. 1 to 4. In this modified mode, air injection is performed while rotating the crossover line 64, but the same air injection may be performed by stopping the crossover line 64 and rotating the taping unit 10. However, in this case, the rotation direction of the taping unit 10 is opposite to the rotation direction of the crossover line 64 described above.

Next, a device configuration for inserting the crossover line 64 into the accommodating recess 62 of the taping unit 10 will be described. The device configuration includes (1) a configuration in which the crossover line 64 (work) is arranged at a stationary position, the taping unit 10 is moved, and the crossover wire 64 and the insulating tape 66 are inserted into the accommodating recess 62, and (2). There is a configuration in which the taping unit 10 is arranged at a stationary position, and the crossover line 64 (work) and the insulating tape 66 are moved and inserted into the accommodating recess 62.

First, the device configuration shown in FIG. 7, which is an example of the configuration of (1), will be described. In this device configuration, a lead wire 72 is formed at one end of a one-phase four continuous winding coil 68 composed of four split coils 70 that form a part of the work, and taping is performed between the two split coils 70. A power crossover line 64 is provided. In this example, the four continuous winding coils 68 can be linearly moved in the horizontal direction by the linear transfer means 74, and when one crossover line 64 reaches a predetermined position, the linear transfer means 74 is stopped and placed in a stationary position. Will be done. A taping unit 10 gripped by the tip of the vertical articulated robot 75 is arranged in the vicinity of the crossover line 64 at a predetermined position (upper in this example). In this vertical articulated robot 75, when the crossover line 64 to be taped comes to rest at a predetermined position, the taping unit 10 holding the insulating tape 66 under negative pressure descends toward the crossover line 64 and crosses into the accommodating recess 62. The wire 64 and the insulating tape 66 are inserted through the opening 62A.

The vertical articulated robot 75 is numerically controlled by a computer and has a plurality of joints 75a, 75b and 75c capable of three-dimensional displacement. As a result, it is possible to easily cope with a change in the position of the crossover line 64 due to a change in the type of the split coil 70 by changing the numerical input. Further, the supply location of the insulating tape 66 can be arbitrarily set by the degree of freedom of the vertical articulated robot 75.

As in the case of the above-described embodiment, air is supplied and taping is performed with the crossover line 64 accommodated in the accommodating recess 62. When the taping for one crossover line 64 is completed, the vertical articulated robot 75 operates, whereby the taping unit 10 retracts upward, sucks the insulating tape 66 under negative pressure, and then stands by at a position facing the crossover line 64. To do. After that, when the linear transport means 74 is fed by a predetermined amount and the next crossover line 64 stands still at a position facing the taping unit 10, a taping operation similar to the above operation is performed.

Next, the device configurations shown in FIGS. 8 and 9 which are configuration examples of (2) will be described. In this apparatus configuration, as shown in FIG. 8, the taping unit 10A is fixed at a stationary position, for example, on the floor surface, and the work of the four continuous winding coils as shown in FIG. 7 including the crossover line 64 to be taped. 80 is gripped by the tip of the robot arm 76. The robot arm 76 is configured so that the crossover line 64 to be taped of the work 80 gripped by the pair of chucks 78 can be moved up and down toward the taping unit 10A. An insulating tape 66 is placed in the opening 62A of the taping unit 10A so as to close the opening 62A of the accommodating recess 62 with its adhesive surface facing the front side, or is held by suction with a negative pressure. ..

FIG. 8 shows a state in which a pair of chucks 78 move inward and grip the work 80 having the crossover line 64. From this state, as shown in FIG. 9A, the robot arm 76 operates, the work 80 moves to a position facing the accommodation recess 62 of the taping unit 10A, and then descends, and the crossover line 64 becomes the insulating tape 66. At the same time, the taping unit 10A is accommodated in the accommodating recess 62 via the opening 62A. When the crossover line 64 reaches the bottom surface of the accommodating recess 62, taping is performed by air injection pressure as shown in FIG. 9B.

Similar to the above-mentioned vertical articulated robot 75, the robot arm 76 is numerically controlled by a computer and has a plurality of joints capable of three-dimensional displacement. As a result, it is possible to easily cope with a change in the position of the crossover line 64 due to a change in the type of the work 80 by changing the numerical input.

According to the apparatus configuration as described in FIGS. 7 to 9, the taping process can be performed in a post-process separate from the winding process. In this post-process, for example, fixed-size cutting of the wire rod after winding, film peeling, annular molding, and the like are performed, and taping processing can be performed in parallel during the work of these steps. Therefore, unlike the conventional technique, the taping process does not increase the line tact of the entire winding process.

All of the above-described embodiments are exemplary and not limited to the present invention, and the present invention can be implemented in various other modifications and modifications. Therefore, the scope of the present invention is defined only by the claims and their equivalents.

10, 10A Taping unit 11 Air supply source 12 Air supply path 13 Solenoid valve 14 Control means 15 Wire sensor 16 Air hose 17 Plug 20 Air introduction part 22 Air injection part 24 Air introduction port 26 Fitting groove 28 Air pool 30 Ventilation path 32 Fixing screw 34, 50, 60 Insertion hole 36 Screw hole 38 Upper member 38a, 40a Step portion 40 Lower member 42, 52 Recess formation surface 44, 54 Air injection port 46, 56 Flow path 48, 58 Fixing part 62 Containment recess 62A Opening 64 Cross wire 66 Insulation tape 68 4 Continuous winding coil 70 Divided coil 72 Lead wire 74 Linear transport means 75 Vertical articulated robot 7a, 75b, 75c Joint 76 Robot arm 78 Chuck 80 Work d1 Diameter d2 Opening gap W1 Width

Claims (7)

A taping device for attaching insulating tape to the peripheral surface of a wire rod.
The wire rod has an opening opened in one direction with an opening gap larger than the diameter of the wire rod, and the wire rod in a state where the insulating tape is adhered to a part of the peripheral surface can be accommodated through the opening. It is provided with a storage recess and a plurality of air injection ports opened in the storage recess.
The plurality of air injection ports are arranged in a row along the longitudinal direction of the accommodating recess, and the insulating tape is subjected to air injection pressure while rotating the wire rod or the accommodating recess in the circumferential direction of the wire rod. A taping device characterized in that it is provided so as to be pressed and attached to the peripheral surface of the wire rod. The claim is characterized in that the plurality of air injection ports are configured to open upward and / or downward in the inner portion of the accommodating recess on the opposite side of the opening. The taping device according to 1. The taping device according to claim 1, wherein the plurality of air injection ports are arranged so as to be separated from each other along the longitudinal direction of the accommodating recess. An air injection section having the accommodating recess and the plurality of air injection ports, and an air introduction section having an air pool communicating with the plurality of air injection ports of the air injection section are further provided.
The air injection unit has a plurality of flow paths that communicate the air pool and the plurality of air injection ports, respectively, and one end of the air introduction unit is connected to the air supply source and the other end is the air pool. The taping device according to any one of claims 1 to 3 , wherein the taping device has a communicating air inlet. The air injection portion and the air introduction portion are composed of independent members, and the accommodating recess of the air injection portion is characterized by being integrated by combining the independent members. The taping device according to claim 4 . The first aspect of the present invention is characterized in that the accommodation recess or the wire rod is moved, and a moving means configured to accommodate the portion of the wire rod to which the insulating tape is attached is further provided in the accommodation recess. The taping device described. This is a taping method in which insulating tape is attached to the peripheral surface of the wire.
The insulating tape is adhered to a part of the peripheral surface of the wire rod, and the insulating tape is provided through the opening of the accommodating recess having an opening opening in one direction with an opening gap larger than the diameter of the wire rod. By inserting the wire rod coated with the insulating tape, the wire rod and the insulating tape are accommodated in the accommodating recess, and air is injected from a plurality of air injection ports opened in the accommodating recess. A taping method characterized in that the insulating tape is pressed against the peripheral surface of the wire rod by air injection pressure and attached.

Images