JP2014172055A - Coil forming equipment and coil forming method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coil forming equipment capable of easily increasing a forming speed of a coil.SOLUTION: A coil forming equipment 1 comprises: a first holding tool 11 and a second holding tool 12 capable of holding a conductor wire 3; and a controller 40. The controller 40 repeatedly executes operations of: holding operation for switching from a non-holding state to a holding state; transferring operation to a downstream side of a transfer direction F; non-holding operation for switching from the holding state to the non-holding state; and return operation to an upstream side of the transfer direction F, in a described order for a plurality of times for each of the first holding tool 11 and the second holding tool 12. The controller 40 performs operations of the second holding tool 12 from starting the non-holding operation to completing the holding operation during a time period on the first holding tool 11 from completing the holding operation to starting the non-holding operation, and performs operations of the first holding tool 11 from starting the non-holding operation to completing the holding operation during a time period on the second holding tool 12 from completing the holding operation to starting the non-holding operation.

Description

  The present invention relates to a coil forming apparatus and a coil forming method for forming a coil by performing a plurality of bending processes on a linear conductor.

  As such a coil forming apparatus, an apparatus described in Japanese Patent No. 4278700 (Patent Document 1) is known. Hereinafter, in the description of the column of the background art, member names and symbols in Patent Document 1 are quoted in []. In Patent Document 1, a conveying device [feed unit 50] that conveys a linear conductor [flat wire 3] in the conveying direction and a downstream side of the conveying direction from the conveying device, A coil forming apparatus provided with a processing apparatus [bending unit 10] that performs bending with respect to the bending apparatus is provided with a fixture [holding unit 70] that fixes a linear conductor during bending by the processing apparatus. . In the configuration of Patent Document 1, the transport device includes a holder [feed clamp 52], and the holder is moved to the downstream side in the transport direction in a state in which the state of the holder is switched to a holding state that holds the linear conductor. The transport device repeatedly executes a feeding operation and a return operation for moving the retainer upstream in the transport direction in a state in which the state of the retainer is switched to a non-hold state in which the linear conductor is not retained. The linear conductor is transported in the transport direction.

  By the way, in the structure of patent document 1, the bending process by a processing apparatus is performed once whenever the feeding operation of a conveying apparatus is performed. Therefore, in order to increase the coil forming speed and improve the coil production efficiency, it is conceivable to increase the conveying speed of the linear conductor by the conveying device. However, in consideration of the fact that the amount of movement of the linear conductor by one transport operation of the transport device is relatively small and it is necessary to stop the linear conductor when the transport operation by the transport device is completed, It is not easy to improve the coil forming speed by increasing the conveying speed during one feeding operation of the conductor.

Japanese Patent No. 4278700 (FIG. 1 etc.)

  Therefore, it is required to realize a coil forming apparatus and a coil forming method that can easily improve the coil forming speed.

  The characteristic configuration of the coil forming apparatus according to the present invention, in which a coil is formed by performing a plurality of bending processes on a linear conductor, includes a transport apparatus that transports the linear conductor in a transport direction, and the transport direction more than the transport apparatus. And a processing device that bends the portion to be processed of the linear conductor, and the transport device can hold the linear conductor disposed along the transport direction. A first holding tool and a second holding tool that are arranged at different positions in the transport direction, a first reciprocating mechanism for reciprocating the first holder in the transport direction, Controls the operations of a second reciprocating mechanism for reciprocating the second holder in the transport direction, the first holder, the second holder, the first reciprocating mechanism, and the second reciprocating mechanism. A control device, and the control device A holding operation for switching the state of the holding tool from a non-holding state in which the linear conductor is not held to a holding state in which the linear conductor is held with respect to each of the first holding tool and the second holding tool; A feeding operation for moving the holder to the downstream side in the transport direction so that the target part is supplied to the processing apparatus; and a non-holding operation for switching the state of the holder from the holding state to the non-holding state; A return operation for moving the holder to the upstream side in the transport direction is repeatedly performed a plurality of times in the order described, and the control device further completes the holding operation of the first holder. Within a period from the start of the non-holding operation of the first holder to the completion of the holding operation of the second holder after the start of the non-holding operation of the second holder. Line action The non-holding operation of the first holder is started within a period from the completion of the holding operation of the second holder to the start of the non-holding operation of the second holder. The first holding tool is configured to perform an operation until the holding operation is completed.

According to said characteristic structure, the control apparatus of a conveying apparatus repeatedly performs a holding operation | movement, a feed operation | movement, a non-holding operation | movement, and a return operation | movement several times in order of description about each of the 1st holder and the 2nd holder. Therefore, the linear conductor can be transported in the transport direction using both the first holder and the second holder. At this time, within a period from the completion of the holding operation of the first holding tool to the start of the non-holding operation of the first holding tool, the second holding tool is started after the non-holding operation of the second holding tool is started. Since the operation until the holding operation is completed is performed, the return operation of the second holding tool can be executed using the period during which the feeding operation of the first holding tool is executed. Also, within the period from the completion of the holding operation of the second holding tool to the start of the non-holding operation of the second holding tool, the holding of the first holding tool after the start of the non-holding operation of the first holding tool. Since the operation until the operation is completed is performed, the return operation of the first holder can be performed using the period during which the feeding operation of the second holder is executed. That is, according to the above characteristic configuration, the first holding tool is used while performing the returning operation of the other holding tool using the time required for the feeding operation of one of the first holding tool and the second holding tool. Each of the tool feeding operation and the second holding tool feeding operation can be repeatedly executed a plurality of times while shifting the time. Therefore, compared with the case where the transport device includes only a single holder, the feeding operation for transporting the linear conductor can be repeatedly executed in a time efficient manner, resulting in the coil forming speed. It becomes easy to improve.
Further, according to the above characteristic configuration, the non-holding operation of the second holder is started within a period from the completion of the holding operation of the first holder to the start of the non-holding operation of the first holder. Until the completion of the holding operation of the second holding tool, and within the period from the completion of the holding operation of the second holding tool to the start of the non-holding operation of the second holding tool. Since the operation from the start of the non-holding operation of the one holding tool to the completion of the holding operation of the first holding tool is performed, the linear conductor is at least one of the first holding tool and the second holding tool at any point of time. Can be held in. Therefore, one of the first holding tool and the second holding tool can be provided at the time of bending the linear conductor by the processing device without providing a fixing tool for fixing the linear conductor separately from the first holding tool and the second holding tool. Or both can fix a linear conductor appropriately.

  Here, the processing apparatus bends the linear conductor by pressing a bending tool that bends the linear conductor, a non-bending position where the linear conductor can be transported by the transport device, and the portion to be processed. A bending mechanism that moves the bending tool between the bending position and the bending position, and the bending device switches the position of the bending tool from the non-bending position to the bending position. The bending return operation for switching from the bending position to the non-bending position is repeatedly performed a plurality of times, and the bending operation is set after the completion of the feeding operation of the first holder. It is set to start at each of a start timing and a second bending start timing set after completion of the feeding operation of the second holder, and starts at the first bending start timing. The bending operation started after the second bending start timing is set before the completion of the non-holding operation of the first holder. It is preferable that the start timing of the bending return operation executed next to is set before the completion of the non-holding operation of the second holder.

  According to this configuration, since the start timing of the bending return operation that is performed after the bending operation started at the first bending start timing is set before the completion of the non-holding operation of the first holder, After the completion of the bending operation that is started at the first bending start timing, the feeding operation of the second holding device that needs to be executed in a state where the holding device is switched to the non-holding state and the bending tool is switched to the non-bending position. It is possible to execute at a relatively early time. Similarly, according to the above configuration, the start timing of the bending return operation that is performed after the bending operation started at the second bending start timing is set before the completion of the non-holding operation of the second holder. Therefore, the bending operation that is started at the second bending start timing is required to execute the feeding operation of the first holding tool that needs to be performed in a state where the second holding tool is switched to the non-holding state and the bending tool is switched to the non-bending position. It is possible to execute it at a relatively early time after the operation is completed. Therefore, the feeding operation for transporting the linear conductor can be repeatedly executed multiple times efficiently with appropriate consideration of the timing of the bending operation and the bending return operation that are repeatedly executed by the processing apparatus a plurality of times. .

  As described above, the start timing of the bending return operation performed next to the bending operation started at the first bending start timing is set before the completion of the non-holding operation of the first holder, In a configuration in which the start timing of the bending return operation performed next to the bending operation started at the second bending start timing is set before the completion of the non-holding operation of the second holder, The completion timing of the bending return operation executed after the bending operation started at the first bending start timing is set before the completion of the non-holding operation of the first holder, and the second bending start timing is set. It is preferable that the completion timing of the bending return operation to be executed next to the bending operation started in step 2 is set before the completion of the non-holding operation of the second holder. It is.

  According to this configuration, the feeding operation of the first holder can be easily performed at an early time after the completion of the bending operation started at the second bending start timing, and the feeding operation of the second holder can be performed. It becomes easy to execute at an early stage after completion of the bending operation started at the first bending start timing.

  According to the present invention, a transport device that includes two holders capable of holding linear conductors arranged along the transport direction and transports the linear conductor in the transport direction, and the transport direction more than the transport device A coil forming apparatus provided with a processing apparatus that is disposed on the downstream side of the linear conductor and performs a bending process on a portion to be processed of the linear conductor, and a coil is formed by performing a plurality of bending processes on the linear conductor. A characteristic configuration of the coil forming method to form includes a holding step of switching the state of the holding tool from a non-holding state in which the linear conductor is not held to a holding state in which the linear conductor is held, and the processing target portion is the processing device A feeding step for moving the holding tool to the downstream side in the transport direction so as to be supplied to the head, a non-holding step for switching the state of the holding tool from the holding state to the non-holding state, and the transporting the holding tool. Up direction A return step that moves to the side, and using the first holder that is one of the two holders, the holding step, the feeding step, the non-holding step, and the returning step, And repeatedly executing the holding step and the second holding tool, which is the other of the two holding tools and disposed at a position different from the first holding tool in the transport direction. The feeding step, the non-holding step, and the return step are repeatedly executed in the order described, and further, the non-holding step using the first holding fixture is completed after the holding step using the first holding fixture is completed. Within the period until the start of the holding process, the process from the start of the non-holding process using the second holding tool to the completion of the holding process using the second holding tool is performed, and Complete the holding step using the second holder The holding process using the first holding tool after the non-holding process using the first holding tool is started within a period until the non-holding process using the second holding tool is started. It is in the point of performing the process until it completes.

According to said characteristic structure, using each of a 1st holder and a 2nd holder, a holding process, a feed process, a non-holding process, and a return process are repeatedly performed in order of description, and 1st The linear conductor can be transported in the transport direction using both the retainer and the second retainer. At this time, a non-holding step (hereinafter referred to as “first non-holding step”) using the first holding tool after completing a holding step using the first holding tool (hereinafter referred to as “first holding step”). .) Within the period until the start of the non-holding step using the second holding tool (hereinafter referred to as “second non-holding step”) and the holding step using the second holding tool (hereinafter referred to as “second non-holding step”). , Referred to as “second holding step”), in order to perform processing until completion, using a period for executing the feeding step using the first holder (hereinafter referred to as “first feeding step”), A return step using the second holder (hereinafter referred to as “second return step”) can be performed. In addition, in order to perform the process from the start of the first non-holding process to the completion of the first holding process within the period from the completion of the second holding process to the start of the second non-holding process, A return process using the first holder (hereinafter referred to as “first return process”) using a period during which the feed process using the two holders (hereinafter referred to as “second feed process”) is executed. Can be executed. That is, according to said characteristic structure, while performing the 2nd return process using the time required for the 1st feed process, while performing the 1st return process using the time required for the 2nd feed process Each of the first feeding process and the second feeding process can be repeatedly executed a plurality of times while shifting the time. Therefore, compared with the case where the transport device includes only a single holder, the feeding process for transporting the linear conductor can be repeatedly executed in a time efficient manner, resulting in the coil forming speed. It becomes easy to improve.
Furthermore, according to said characteristic structure, after completing a 1st non-holding process after completing a 1st non-holding process, it completes a 2nd non-holding process after starting a 2nd non-holding process. The process from the start of the first non-holding process to the completion of the first holding process within the period from the completion of the second holding process to the start of the second non-holding process. Therefore, the linear conductor can be held at least one of the first holder and the second holder at any time. Therefore, one of the first holding tool and the second holding tool can be provided at the time of bending the linear conductor by the processing device without providing a fixing tool for fixing the linear conductor separately from the first holding tool and the second holding tool. Or both can fix a linear conductor appropriately.

  Here, the position of the bending tool provided in the processing apparatus is changed from a non-bending position where the linear conductor can be conveyed by the conveying apparatus to a bending position where the linear conductor is bent by pressing the portion to be processed. A bending step of switching, and a bending return step of switching the position of the bending tool from the bending position to the non-bending position, and is set after the completion of the feeding step using the first holder The bending process is started at each of a bending start timing and a second bending start timing set after completion of the feeding process of the second holding tool, and the bending process started at the first bending start timing. The bending return step to be executed next is started before the completion of the non-holding step of the first holder, and is executed next to the bending step started at the second bending start timing. The tune back step, it is preferable that a structure that begins before completion of the non-holding step of the second retainer.

  According to this configuration, both the first non-holding step and the bending back step are performed in order to start the bending return step performed after the bending step started at the first bending start timing before the completion of the first non-holding step. It is possible to execute the second feeding process that needs to be executed after the completion of the above, at a relatively early time after the completion of the bending process that starts at the first bending start timing. Similarly, since the bending return process executed after the bending process started at the second bending start timing is started before the completion of the second non-holding process, after both the second non-holding process and the bending return process are completed. The first feeding process that needs to be performed can be performed at a relatively early time after the completion of the bending process that starts at the second bending start timing. Therefore, the feeding process for transporting the linear conductor can be repeatedly executed with a plurality of times efficiently while appropriately considering the timing of the bending process and the bending return process.

  As described above, the bending return process to be executed next to the bending process started at the first bending start timing is started before the non-holding process of the first holding tool is completed, and the second bending start is started. In the configuration in which the bending return process executed after the bending process started at the timing is started before the non-holding process of the second holding tool is completed, the bending process started at the first bending start timing. The bending return step to be executed next is completed before the completion of the non-holding step of the first holder, and the bending return step to be executed next to the bending step started at the second bending start timing, It is preferable that the configuration is completed before completion of the non-holding step of the second holding tool.

  According to this configuration, it is easy to execute the first feeding process at an early time after the completion of the bending process starting at the second bending start timing, and the second feeding process is performed at the first bending start timing. It becomes easy to execute at an early stage after completion of the bending process to be started.

It is a schematic structure figure showing a coil forming device concerning an embodiment of the present invention. It is a time chart which shows the coil shaping | molding method which concerns on embodiment of this invention. It is a figure which shows the arrangement | positioning state of the 1st holder, the 2nd holder, and the bending tool at the time of completion of the 1st feeding process and 2nd return process which concern on embodiment of this invention. It is a figure which shows the arrangement | positioning state of the 1st holder, the 2nd holder, and the bending tool at the time of completion of the 2nd holding process and 1st bending process which concern on embodiment of this invention. It is a figure which shows the arrangement | positioning state of the 1st holder, the 2nd holder, and the bending tool at the time of completion of the 1st non-holding process and 1st bending return process which concern on embodiment of this invention. It is a figure which shows the arrangement | positioning state of the 1st holder, the 2nd holder, and the bending tool at the time of completion of the 1st return process and 2nd feeding process which concern on embodiment of this invention. It is a figure which shows the arrangement | positioning state of the 1st holder, the 2nd holder, and the bending tool at the time of completion of the 1st holding process and 2nd bending process which concern on embodiment of this invention. It is a figure which shows the arrangement | positioning state of the 1st holder, the 2nd holder, and the bending tool at the time of completion of the 2nd non-holding process and 2nd bending return process which concern on embodiment of this invention. It is a figure which shows the arrangement | positioning state of the 1st holder, the 2nd holder, and the bending tool at the time of completion of the 1st feeding process and 2nd return process which concern on embodiment of this invention. It is a figure which shows the arrangement | positioning state of the 1st holder, the 2nd holder, and the bending tool at the time of completion of the 2nd holding process and 1st bending process which concern on embodiment of this invention.

  Embodiments of a coil forming apparatus and a coil forming method according to the present invention will be described with reference to the drawings. As shown in FIG. 1, the coil forming apparatus 1 according to the present embodiment performs a plurality of bending processes on a linear conductor 3 (flat wire) having a rectangular cross-section perpendicular to the extending direction. And a coil 5 for a rotating electrical machine such as a generator (see FIG. 10).

1. Overall Configuration of Coil Forming Apparatus The coil forming apparatus 1 is an apparatus for forming a coil 5 by performing a plurality of bending processes on the linear conductor 3, and transports the linear conductor 3 in the transport direction F as shown in FIG. And a processing device 20 for bending the processing target portion 3a of the linear conductor 3 (see FIG. 3 and the like). The processing device 20 is disposed on the downstream side in the transport direction F with respect to the transport device 10. The processing target portion 3a is set at a plurality of locations along the transport direction F in the linear conductor 3, and the processing device 20 is supplied every time the processing target portion 3a is supplied by the transport device 10. Bending the part 3a. In addition, the linear conductor 3 is comprised with electroconductive materials, such as copper and aluminum, and is comprised so that plastic processing can be performed. In the present embodiment, an insulating film made of an electrically insulating material such as resin or ceramic is formed on the surface of the linear conductor 3.

  In the present embodiment, as illustrated in FIG. 1, the transport device 10 is configured to transport the linear conductor 3 drawn from the bobbin 2 to the downstream side in the transport direction F. Between the bobbin 2 and the conveyance device 10 in the conveyance direction F, a correction device 4 for correcting the linear conductor 3 into a straight line is provided. The straightening device 4 includes a roller 4a that alternately presses the linear conductor 3 from one side and the other side in the direction to be straightened, and the curl of the linear conductor 3 formed by being wound around the bobbin 2. Is removed by the correction device 4. As described above, in this embodiment, the cross-sectional shape of the linear conductor 3 is a rectangular shape, and although not illustrated, the correction device 4 has a short side direction parallel to the short side of the rectangle as the correction target direction. A straightening device and a straightening device having a long side direction parallel to the long side of the rectangle as a correction target direction are provided. In this specification, “parallel” is used as a concept including a state in which they are inclined with respect to each other by an angle due to an error (an error that is acceptable in manufacturing).

  As will be described later, in the present embodiment, the first holder 11 and the second holder 12 which are two holders included in the transport device 10 are formed by sandwiching the linear conductor 3 from both sides in the short side direction. It is comprised so that the shape-like conductor 3 may be hold | maintained. In addition, as will be described later, in this embodiment, the processing device 20 is a device that performs edgewise bending processing on the linear conductor 3, and includes two outer surfaces (the above-described lengths) extending in the extending direction formed by the short sides. The linear conductor 3 is bent so that one of the outer surfaces on both sides in the side direction is on the inner peripheral side and the other is on the outer peripheral side. Thus, regarding the directionality of the cross-sectional shape of the linear conductor 3, the linear conductor 3 is supplied to each of the conveying device 10 and the processing device 20 in a predetermined relationship. In FIG. Each part of the coil forming apparatus 1 is shown in a simplified manner without strictly showing such a relationship. That is, in consideration of the orientation of the holder of the transport device 10 in FIG. 1, the linear conductor 3 is bent to the front side or the back side of the paper by the processing device 20, but for easy understanding of the invention, the wire conductor 3 is bent. The processing device 20 is shown in a direction in which the shape conductor 3 is bent along the paper surface. The same applies to FIGS. 3 to 10 referred to later.

2. Configuration of Conveying Device As shown in FIG. 1, the conveying device 10 includes a first holder 11, a second holder 12, a first reciprocating mechanism 13, a second reciprocating mechanism 14, and a conveyance control device 40. Yes. Each of the first holder 11 and the second holder 12 is a holder that can hold the linear conductor 3 arranged along the transport direction F. The first holder 11 and the second holder 12 are Are disposed at different positions in the transport direction F. In the example shown in FIG. 1, the first holding tool 11 is arranged on the upstream side in the transport direction F with respect to the second holding tool 12.

  Each of the first holder 11 and the second holder 12 is configured to be able to switch between two states of a holding state in which the linear conductor 3 is held and a non-holding state in which the linear conductor 3 is not held. . In the holding state of the first holding tool 11, the linear conductor 3 becomes immovable with respect to the first holding tool 11, and the first holding tool 11 is moved downstream in the transport direction F in the holding state of the first holding tool 11. The linear conductor 3 is conveyed in the conveyance direction F by moving it. Further, in the holding state of the second holding tool 12, the linear conductor 3 becomes immovable with respect to the second holding tool 12, and the second holding tool 12 is moved downstream in the transport direction F in the holding state of the second holding tool 12. The linear conductor 3 is conveyed in the conveyance direction F by moving to the side.

  In the present embodiment, each of the first holder 11 and the second holder 12 is a linear conductor from both sides in a direction orthogonal to the extending direction of the linear conductor 3 (hereinafter referred to as “clamping target direction”). 3 is held by a pair of holding portions to hold the linear conductor 3. And the state of the 1st holding tool 11 switches from a non-holding state to a holding state by making the above-mentioned pair of holding parts with which the 1st holding tool 11 is equipped mutually approach, the above-mentioned pair of holding parts with which the 1st holding tool 11 is provided By separating them from each other, the state of the first holding tool 11 is switched from the holding state to the non-holding state. Similarly, the second holding tool 12 is switched between the holding state and the non-holding state by bringing the pair of holding portions provided in the second holding tool 12 closer to or away from each other. In the present embodiment, for each of the first holding tool 11 and the second holding tool 12, the clamping target direction is set in a direction parallel to the short side of the rectangular cross section of the linear conductor 3.

  The first reciprocating mechanism 13 is a mechanism that reciprocates the first holder 11 in the transport direction F, and the second reciprocating mechanism 14 is a mechanism that reciprocates the second holder 12 in the transport direction F. The first reciprocating mechanism 13 includes a feed operation state in which the first holder 11 is moved downstream in the transport direction F, a return operation state in which the first holder 11 is moved upstream in the transport direction F, It is configured to be able to switch between three states: a fixed state in which the holder 11 is fixed. Similarly, the second reciprocating mechanism 14 includes a feeding operation state in which the second holder 12 is moved downstream in the transport direction F, and a return operation state in which the second holder 12 is moved upstream in the transport direction F. The three states, that is, the fixed state in which the second holder 12 is fixed, are configured to be switchable.

  The conveyance control device 40 is a device that controls the operations of the first holder 11, the second holder 12, the first reciprocating mechanism 13, and the second reciprocating mechanism 14. Specifically, the transport control device 40 controls the operation of the first holding tool 11 to switch the state of the first holding tool 11 between the holding state and the non-holding state, and By controlling the operation, the state of the second holder 12 is switched between the holding state and the non-holding state. In addition, the transport control device 40 controls the operation of the first reciprocating mechanism 13 to switch the state of the first reciprocating mechanism 13 between the feed operation state, the return operation state, and the fixed state, and the second reciprocation mechanism 13. The operation of the moving mechanism 14 is controlled to switch the state of the second reciprocating mechanism 14 between the feed operation state, the return operation state, and the fixed state. In the present embodiment, the transport control device 40 corresponds to the “control device” in the present invention.

  The conveyance control device 40 transmits power transmitted from a driving force source (not shown) to each of the first holder 11, the second holder 12, the first reciprocating mechanism 13, and the second reciprocating mechanism 14. A power transmission mechanism for transmitting is provided at least. This power transmission mechanism includes, for example, a pressing mechanism, a gear mechanism that transmits and transmits rotation, a cam mechanism that converts rotational motion into reciprocating motion, or a ball screw mechanism that converts rotational motion into linear motion. In the present embodiment, the conveyance control device 40 includes, in addition to the power transmission mechanism as described above, a driving force source that transmits power to the power transmission mechanism, and a control unit 30 that controls the operation of the driving force source. I have.

  In the present embodiment, the conveyance control device 40 includes a first drive unit 31 and a second drive unit 32 that are driven and controlled by the control unit 30 as shown in FIG. Although not shown in the drawings, the first drive unit 31 is a motor that is driven and controlled by the control unit 30, and a motor for controlling the state of the first holder 11 (for example, a servo motor, the same applies to each motor described later). A motor for controlling the state of one reciprocating mechanism 13, a power transmission mechanism for transmitting the power of the former motor to the first holder 11, and a power transmission mechanism for the latter motor to the first reciprocating mechanism 13. A power transmission mechanism. Similarly, although not shown in the drawings, the second drive unit 32 includes a motor for controlling the state of the second holder 12 and a motor for controlling the state of the second reciprocating mechanism 14 as motors controlled by the control unit 30. And a power transmission mechanism that transmits the power of the former motor to the second holder 12 and a power transmission mechanism that transmits the power of the latter motor to the second reciprocating mechanism 14.

  The control unit 30 controls the drive of each motor provided in each of the first drive unit 31 and the second drive unit 32. In the present embodiment, each of the motors is a servo motor, and the control unit 30 controls the rotation angle (rotation position) of each servo motor, whereby the first holding tool 11, the second holding tool 12, and the first reciprocation. The operations of the moving mechanism 13 and the second reciprocating mechanism 14 are controlled. For example, the control unit 30 controls the amount of change in the rotation angle of the servo motor for controlling the state of the first reciprocating movement mechanism 13 when controlling the first reciprocating movement mechanism 13 to the feeding operation state. The movement amount (feed amount) of the first holder 11 to the downstream side of F is controlled. Similarly, the feed amount of the second holder 12 is controlled based on the amount of change in the rotation angle of the servo motor for controlling the state of the second reciprocating mechanism 14. In the present embodiment, the control unit 30 is configured to also control the driving of the third drive unit 33 of the machining control device 41 described later. That is, in the present embodiment, the control unit 30 is shared by the conveyance control device 40 and the processing control device 41. The control unit 30 includes, for example, an arithmetic processing unit such as a CPU as a core member, and a storage device that stores software (program) for executing a coil forming method described later.

3. Configuration of Processing Apparatus The processing apparatus 20 includes a bending tool 21 that bends the linear conductor 3 and a bending mechanism 22 that operates the bending tool 21, as shown in FIG. In the present embodiment, the processing device 20 further includes a guide member 23 and a processing control device 41. The bending tool 21 is a non-bending position S1 (see FIG. 3) where the linear conductor 3 can be conveyed by the conveying device 10 and a bending that bends the linear conductor 3 by pressing the processing target portion 3a of the linear conductor 3. The position can be changed between the position S2 (see FIG. 4).

  In this embodiment, as shown in FIGS. 3 and 4, the bending tool 21 is positioned between the non-bending position S <b> 1 and the bending position S <b> 2 by rotational movement about the rotation axis orthogonal to the transport direction F. Is configured to change. In the present embodiment, the processing apparatus 20 is an apparatus that performs edgewise bending processing on the linear conductor 3, and the rotation axis is set in a direction parallel to the short side of the rectangular cross section of the linear conductor 3. . Therefore, by rotating the bending tool 21 from the non-bending position S1 to the bending position S2, one of the outer surfaces on both sides in the long side direction of the rectangular cross section of the linear conductor 3 becomes the inner peripheral side and the other becomes the outer peripheral side. As described above, the linear conductor 3 is bent.

  The bending mechanism 22 is a mechanism that operates the bending tool 21 between the non-bending position S1 and the bending position S2. The bending mechanism 22 includes a bending operation state in which the position of the bending tool 21 is switched from the non-bending position S1 to the bending position S2, a bending return operation state in which the position of the bending tool 21 is switched from the bending position S2 to the non-bending position S1, and a bending tool. The three states, that is, a fixed state in which 21 is fixed, can be switched. In the present embodiment, as shown in FIG. 1, a pair of guide members 23 are provided on the upstream side in the transport direction F with respect to the bending tool 21. The pair of guide members 23 is a gap extending along the transport direction F between the pair of guide members 23 and has a width corresponding to the width of the linear conductor 3 (for example, linear to the width of the linear conductor 3). It is fixed to the bending mechanism 22 so that a gap having a width obtained by adding an amount corresponding to the dimensional tolerance of the conductor 3 is formed. Therefore, when the processing device 3a of the linear conductor 3 is supplied to the arrangement position of the bending tool 21 by the transport device 10, the linear conductor 3 is restricted from moving in the direction orthogonal to the transport direction F by the pair of guide members 23. In this state, it is guided toward the downstream side in the transport direction F.

  In the present embodiment, as shown in FIG. 3, the non-bending position S1 is a position where the bending tool 21 is disposed outside the processing target portion 3a supplied by the transfer device 10 in the direction orthogonal to the transfer direction F. Is set to Specifically, in the non-bending position S1, the contact surface of the bending tool 21 that presses the processing target portion 3a during bending is parallel to the outer surface formed by the short side of the rectangular cross section of the processing target portion 3a. The separation distance between the contact surface and the outer surface at this time is set to a distance according to the dimensional tolerance of the linear conductor 3. That is, the bending tool 21 is disposed so as to contact or substantially contact the outer surface of the processing target portion 3a at the non-bending position S1.

  The processing control device 41 is a device that controls the operation of the bending mechanism 22. Specifically, the machining control device 41 controls the operation of the bending mechanism 22 to switch the state of the bending mechanism 22 between a bending operation state, a bending return operation state, and a fixed state. The machining control device 41 includes at least a power transmission mechanism that transmits power transmitted from a driving force source (not shown) to the bending mechanism 22. This power transmission mechanism includes, for example, a rotating shaft, a gear mechanism, or a belt. In the present embodiment, the machining control device 41 includes, in addition to the power transmission mechanism as described above, a driving force source that transmits power to the power transmission mechanism, and a control unit 30 that controls the operation of the driving force source. I have. As described above, in the present embodiment, the control unit 30 is shared by the conveyance control device 40 and the processing control device 41.

  In the present embodiment, the machining control device 41 includes a third drive unit 33 that is driven and controlled by the control unit 30, as shown in FIG. Although not shown, the third drive unit 33 is a motor that is driven and controlled by the control unit 30. The motor for controlling the state of the bending mechanism 22 and a power transmission mechanism that transmits the power of the motor to the bending mechanism 22. Is provided. The control unit 30 controls the drive of the motor provided in the third drive unit 33. In the present embodiment, the motor is a servo motor, and the control unit 30 controls the operation of the bending mechanism 22 (that is, the operation of the bending tool 21) by controlling the rotation angle (rotation position) of the servo motor. To do. For example, when controlling the bending mechanism 22 to the bending operation state, the control unit 30 controls the bending angle of the linear conductor 3 by the bending tool 21 based on the rotation angle of the servo motor corresponding to the bending position S2. . This bending angle is an angle (for example, 90 degrees to 95 degrees) in consideration of elastic recovery (spring back) so that the bending angle when the coil 5 (FIG. 10) is formed is 90 degrees by design. Angle within range).

4). Coil Forming Method A coil forming method executed using the coil forming apparatus 1 according to the present embodiment will be described with reference to FIGS. In the present embodiment, the operations of the first holder 11, the first reciprocating mechanism 13, the second holder 12, the second reciprocating mechanism 14, and the bending tool 21 are controlled based on the time chart shown in FIG. Thus, the coil 5 is formed by performing a plurality of bending processes on the linear conductor 3. As described above, the operations of the first holder 11, the first reciprocating mechanism 13, the second holder 12, and the second reciprocating mechanism 14 are controlled by the transport control device 40, and the operation of the bending tool 21 is processed. It is controlled by the control device 41.

  As shown in FIG. 2, the coil forming method according to the present embodiment includes a holding step for switching the state of the holder from the non-holding state to the holding state, and the holder 3 so that the processing target portion 3 a is supplied to the processing apparatus 20. A feeding step for moving the holding tool to the downstream side in the conveying direction F, a non-holding step for switching the state of the holding tool from the holding state to the non-holding state, and a returning step for moving the holding tool to the upstream side in the conveying direction F. . These holding process, feeding process, non-holding process, and returning process are repeatedly performed a plurality of times in the order described using the first holder 11. That is, the conveyance control device 40 moves the first holder 11 in the conveyance direction so that the holding operation for switching the state of the first holder 11 from the non-holding state to the holding state and the processing target portion 3 a is supplied to the processing device 20. A feeding operation for moving the first holding tool 11 to the downstream side of F; a non-holding operation for switching the state of the first holding tool 11 from the holding state to the non-holding state; Are repeatedly executed a plurality of times in the order described.

  Moreover, said holding | maintenance process, a sending process, a non-holding process, and a return process are repeatedly performed in order of description using the 2nd holder 12 in multiple times. That is, the conveyance control device 40 moves the second holding tool 12 in the conveying direction so that the holding operation for switching the state of the second holding tool 12 from the non-holding state to the holding state and the processing target portion 3a is supplied to the processing device 20. A feeding operation for moving the second holding tool 12 to the downstream side, a non-holding operation for switching the state of the second holding tool 12 from the holding state to the non-holding state, and a returning operation for moving the second holding tool 12 to the upstream side in the transport direction F Are repeatedly executed a plurality of times in the order described.

  Here, the holding process using the first holding tool 11 is referred to as “first holding process P11”, the feeding process using the first holding tool 11 is referred to as “first feeding process P12”, and the first holding tool 11 is used. The non-holding process that has been performed is referred to as “first non-holding process P13”, and the return process using the first holder 11 is referred to as “first return process P14”. Further, the holding process using the second holding tool 12 is referred to as “second holding process P21”, the feeding process using the second holding tool 12 is referred to as “second feeding process P22”, and the second holding tool 12 is used. The non-holding process is referred to as “second non-holding process P23”, and the return process using the second holder 12 is referred to as “second return process P24”.

  As shown in FIG. 2, the control cycle of the state of the first holder 11, the control cycle of the state of the first reciprocating mechanism 13, the control cycle of the state of the second holder 12, and the state of the second reciprocating mechanism 14 These control cycles are set to be the same. Then, as shown in FIG. 2, within the period from the completion of the first holding process P11 to the start of the first non-holding process P13 (for example, within the period from time T5 to time T8 in FIG. 2), Processing from the start of the second non-holding step P23 to the completion of the second holding step P21 is performed. That is, within this period, the second non-holding step P23, the second return step P24, and the second holding step P21 are executed in the order described. As described above, the conveyance control device 40 performs the non-holding operation of the second holding tool 12 within the period from the completion of the holding operation of the first holding tool 11 to the start of the non-holding operation of the first holding tool 11. The operation from the start to the completion of the holding operation of the second holder 12 is performed.

  Also, as shown in FIG. 2, within the period from the completion of the second holding process P21 to the start of the second non-holding process P23 (for example, within the period from time T2 to time T5 in FIG. 2), Processing from the start of the first non-holding step P13 to the completion of the first holding step P11 is performed. That is, the first non-holding process P13, the first return process P14, and the first holding process P11 are executed in the order described within this period. Thus, the conveyance control device 40 performs the non-holding operation of the first holding tool 11 within a period from the completion of the holding operation of the second holding tool 12 to the start of the non-holding operation of the second holding tool 12. The operation from the start to the completion of the holding operation of the first holder 11 is performed.

  In order to provide such a configuration, in the coil forming method according to the present embodiment, the linear conductor 3 is held by at least one of the first holder 11 and the second holder 12 at any time point. In addition, in the period from the completion of the first holding process P11 to the start of the second non-holding process P23 and the period from the completion of the second holding process P21 to the start of the first non-holding process P13. And the second holder 12 both hold the linear conductor 3. In the present embodiment, as shown in FIG. 2, the start timing of the second non-holding process P23 is set to the completion time of the first holding process P11, and the start timing of the first non-holding process P13 is set to the second holding process P21. It is set at the time of completion. Therefore, in the present embodiment, the state in which the linear conductor 3 is held by both the first holding tool 11 and the second holding tool 12 is the time when the first holding process P11 is completed and the time when the second holding process P21 is completed. Only realized.

  In the present embodiment, the start timing of the first return process P14 is set to the completion time of the first non-holding process P13, and the start timing of the first hold process P11 is set to the completion time of the first return process P14. ing. Therefore, the first non-holding step P13, the first return step P14, and the first holding step P11 are continuously executed in the order described. At this time, the start timing of the second feed process P22 is set after the completion of the first non-holding process P13. In this embodiment, the start timing of the second feed process P22 is set to the completion of the first non-holding process P13. The time is set. That is, the first return process P14 and the second feed process P22 are executed at the same time. In the present embodiment, the first return process P14 is completed when the second feeding process P22 is completed. Note that “after completion” includes simultaneous with completion.

  In the present embodiment, the start timing of the second return process P24 is set to the completion time of the second non-holding process P23, and the start timing of the second hold process P21 is set to the completion time of the second return process P24. Is set. Therefore, the second non-holding step P23, the second return step P24, and the second holding step P21 are continuously executed in the order described. At this time, the start timing of the first feed process P12 is set after the completion of the second non-holding process P23, but in this embodiment, the start timing of the first feed process P12 is set to the completion of the second non-holding process P23. The time is set. That is, the second return process P24 and the first feed process P12 are executed at the same time. In the present embodiment, the second return process P24 is completed when the first feeding process P12 is completed.

  By the way, in this embodiment, as shown in FIG. 1, the coil forming apparatus 1 includes a correction device 4. Therefore, the transport device 10 is configured to transport the linear conductor 3 in a state where tension in the transport direction F is applied to the linear conductor 3 to such an extent that the curl etc. can be appropriately removed by the correction device 4. Has been. In this regard, as described above, the linear conductor 3 is held by at least one of the first holder 11 and the second holder 12 at any point in time, so that the linear conductor 3 is conveyed by the correction device 4 in the transport direction F. It is possible to regulate the drawing to the upstream side. In addition, since the linear conductor 3 can be held by at least one of the first holding tool 11 and the second holding tool 12 even during the bending process by the bending tool 21, the bending process is appropriately performed on the linear conductor 3. It is possible to do.

  As shown in FIG. 2, the coil forming method according to the present embodiment includes a bending step of switching the position of the bending tool 21 from the non-bending position S1 to the bending position S2, and the position of the bending tool 21 from the bending position S2 to the non-bending position. A bending return step for switching to S1. These bending process and bending return process are repeatedly performed a plurality of times. That is, the processing control device 41 performs a bending operation for switching the position of the bending tool 21 from the non-bending position S1 to the bending position S2, and a bending return operation for switching the position of the bending tool 21 from the bending position S2 to the non-bending position S1. It is configured to repeatedly execute multiple times.

  As shown in FIG. 2, the bending process includes a first bending start timing V1 set after completion of the first feeding process P12, and a second bending start timing V2 set after completion of the second feeding process P22. Start with each of the. That is, the processing control device 41 performs the bending operation of the bending tool 21 on the first bending start timing V1 set after the completion of the feeding operation of the first holding tool 11 and after the completion of the feeding operation of the second holding tool 12. Is started at each of the second bending start timings V2 set to. Here, the bending process started at the first bending start timing V1 is referred to as “first bending process P31”, and the bending process started at the second bending start timing V2 is referred to as “second bending process P41”.

  In the present embodiment, as shown in FIG. 2, the first bending start timing V1 is set at the completion time of the first feeding process P12, and the second bending start timing V2 is set at the completion time of the second feeding process P22. Has been. That is, in this embodiment, the start timing of the first bending process P31 is set at the completion time of the first feeding process P12, and the start timing of the second bending process P41 is set at the completion time of the second feeding process P22. ing.

  Further, in the present embodiment, as shown in FIG. 2, the first bending return process P32 that is the bending return process performed after the first bending process P31 is started before the completion of the first non-holding process P13, A second bend return step P42, which is a bend return step executed after the second bend step P41, is started before the completion of the second non-holding step P23. “Before completion” includes simultaneous with completion. That is, the start timing of the bending return operation performed after the bending operation started at the first bending start timing V1 is set before the completion of the non-holding operation of the first holder 11, and the second bending start timing V2 The start timing of the bending return operation that is executed next to the bending operation that was started in (2) is set before the completion of the non-holding operation of the second holder 12.

  Further, in the present embodiment, the first bending return process P32 is completed before the completion of the first non-holding process P13, and the second bending return process P42 is completed before the completion of the second non-holding process P23. It is configured. In other words, in the present embodiment, the completion timing of the bending return operation that is executed after the bending operation started at the first bending start timing V1 is set before the completion of the non-holding operation of the first holder 11, The completion timing of the bending return operation executed next to the bending operation started at the second bending start timing V <b> 2 is set before the completion of the non-holding operation of the second holder 12.

  Specifically, in this embodiment, the start timing of the first bending return process P32 is set to the completion time of the first bending process P31, and the start timing of the second bending return process P42 is set to the completion time of the second bending process P41. Is set to In the present embodiment, since the first bending step P31 is completed when the second holding step P21 is completed, the start timing of the first bending return step P32 coincides with the start timing of the first non-holding step P13. Moreover, in this embodiment, since the 2nd bending process P41 is completed when the 1st holding process P11 is completed, the start timing of the 2nd bending return process P42 corresponds with the start timing of the 2nd non-holding process P23. . In the present embodiment, the first bending return process P32 is completed when the first non-holding process P13 is completed, and the second bending return process P42 is completed when the second non-holding process P23 is completed.

  FIGS. 3-10 has shown a mode that a bending process is sequentially performed with respect to the linear conductor 3 by performing the coil shaping | molding method provided with the above structures. Here, FIGS. 3, 4, 5, 6, 7, 8, 9, and 10 respectively represent time T1, time T2, time T3, time T4, time T5, and time in FIG. The state of the coil shaping | molding apparatus 1 and the linear conductor 3 in T6, the time T7, and the time T8 is shown. As shown in FIGS. 3 to 9, the period from time T <b> 1 to time T <b> 7 in FIG. 2 is a control cycle for the transport device 10, specifically, the state of the first holder 11, the first reciprocating mechanism 13. This corresponds to the respective control cycles of the state of the second holding tool 12 and the state of the second reciprocating mechanism 14. On the other hand, the control cycle for the processing device 20, specifically, the control cycle for the state of the bending tool 21 is half the control cycle for the transport device 10. That is, according to the coil shaping | molding apparatus 1 and coil shaping | molding method which concern on this embodiment, in each control period about the conveying apparatus 10, the bending process with respect to the linear conductor 3 is performed twice (specifically 1st bending process P31). And the second bending step P41 can be performed twice).

  Here, a period during which the second holding process P21 and the first bending process P31 are executed in combination with the start timing and the completion timing (period from time T1 to time T2 in FIG. 2) is defined as the first period. A period (a period from time T2 to time T3 in FIG. 2) in which the holding process P13 and the first bending return process P32 are executed in combination with each of the start timing and the completion timing is a second period, and the first return process P14 and the first return process P32 are performed. A period (a period from time T3 to time T4 in FIG. 2) in which the two-feed process P22 is executed in combination with the start timing and completion timing is the third period, and the first holding process P11 and the second bending process P41 are started. A period in which the timing and completion timing are combined (period from time T4 to time T5 in FIG. 2) The fourth period, the period in which the second non-holding process P23 and the second bending return process P42 are executed in accordance with the start timing and the completion timing (period from time T5 to time T6 in FIG. 2) is the fifth period, A period (a period from time T6 to time T7 in FIG. 2) in which the second return process P24 and the first feed process P12 are executed together with the start timing and the completion timing is defined as a sixth period. In the present embodiment, the first period, the second period, the third period, the fourth period, the fifth period, and the sixth period continue in the order of description (the period from time T1 to time T7 in FIG. 2). ) Constitutes each control cycle for the transport apparatus 10.

  In this embodiment, as shown in FIG. 10, the shape of the coil 5 as viewed in the winding axis direction is rectangular, and as is clear from a comparison between FIG. 3 and FIG. 6, in the first feeding process P <b> 12. The feed amount of the linear conductor 3 is set larger than the feed amount of the linear conductor 3 in the second feeding step P22. In addition, the feed amount of the linear conductor 3 in the first feed process P12 is variably set for each process, or the feed amount of the linear conductor 3 in the second feed process P22 is variably set for each process. Is also possible. For example, the feed amount in the second feed process P22 can be set to be larger or smaller as it becomes a later process.

5. Other Embodiments Finally, other embodiments according to the present invention will be described. Note that the configurations disclosed in the following embodiments can be applied in combination with the configurations disclosed in other embodiments as long as no contradiction arises.

(1) In the above embodiment, the first bend return step P32 is completed before the completion of the first non-holding step P13, and the second bend return step P42 is completed before the completion of the second non-holding step P23. The configuration has been described as an example. However, the embodiment of the present invention is not limited to this. For example, the first bending return process P32 is completed after the completion time of the first non-holding process P13, or the second bending return process P42 is completed after the completion time of the second non-holding process P23. It can also be. In this case, the start timing of the second feed process P22 is set after the completion time of the first non-holding process P13, or the start timing of the first feed process P12 is after the completion time of the second non-holding process P23. Is set.

(2) In the above embodiment, the first bending process P31 is completed when the second holding process P21 is completed, and the second bending process P41 is completed when the first holding process P11 is completed. explained. However, the embodiment of the present invention is not limited to this. For example, the first bending process P31 is completed after the completion time of the second holding process P21, or the second bending process P41 is completed after the completion time of the first holding process P11. You can also In this case, unlike the above embodiment, the start timing of the first bend return step P32 is set after the start time of the first non-holding step P13, or the start timing of the second bend return step P42 is It is set after the start time of the second non-holding process P23.

(3) In the above embodiment, the first bending return process P32 is started before the completion of the first non-holding process P13, and the second bending return process P42 is started before the completion of the second non-holding process P23. The configuration is described as an example. However, the embodiment of the present invention is not limited to this. For example, the first bending return process P32 is started after the completion time of the first non-holding process P13, or the second bending return process P42 is started after the completion time of the second non-holding process P23. A configuration is also possible. In this case, the start timing of the second feed process P22 is set after the completion time of the first non-holding process P13, or the start timing of the first feed process P12 is after the completion time of the second non-holding process P23. Is set.

(4) In the above embodiment, the configuration in which each of the first drive unit 31, the second drive unit 32, and the third drive unit 33 includes a motor that is driven and controlled by the control unit 30 has been described as an example. However, the embodiment of the present invention is not limited to this. For example, a configuration in which at least one of the first drive unit 31, the second drive unit 32, and the third drive unit 33 does not include a motor, that is, power that functions passively with respect to external power. It can also be set as the structure provided only with the transmission mechanism.

(5) In the above embodiment, the first drive unit 31 includes the state control motor for the first holder 11 and the state control motor for the first reciprocating mechanism 13, and the second drive unit 32 includes the first drive unit 32. A configuration in which the motor for controlling the state of the two holders 12 and the motor for controlling the state of the second reciprocating mechanism 14 are provided and the third drive unit 33 includes the motor for controlling the state of the bending mechanism 22 will be described as an example. did. However, the embodiment of the present invention is not limited to this. As described with reference to FIG. 2, the control cycle of the state of the first holder 11, the control cycle of the state of the first reciprocating mechanism 13, the control cycle of the state of the second holder 12, and the second reciprocating movement The control cycle of the state of the mechanism 14 is the same, and the control cycle of the state of the bending mechanism 22 is half the time of the control cycle of the state of the first holder 11. Therefore, at least any two of the above five motors may be shared, and a power transmission mechanism that distributes and transmits power to each of a plurality of controlled objects from the shared motor may be provided. Is possible.

(6) In the above embodiment, as an example, the bending tool 21 is configured to change the position between the non-bending position S1 and the bending position S2 by rotational movement around the rotation axis orthogonal to the conveyance direction F. explained. However, the embodiment of the present invention is not limited to this. For example, the bending tool can be configured to change the position between the non-bending position and the bending position by linear movement instead of rotational movement, or by a combination of rotational movement and linear movement. The linear movement in this case is, for example, a linear movement along a direction orthogonal to the transport direction F.

(7) In the above embodiment, the configuration in which the processing apparatus 20 is an apparatus that performs edgewise bending on the linear conductor 3 has been described as an example. However, the embodiment of the present invention is not limited to this. For example, the processing apparatus according to the present invention is an apparatus that performs flat-wise bending processing on the linear conductor 3, that is, one of the outer surfaces on both sides in the short side direction of the rectangular cross section of the linear conductor 3 is the inner peripheral side, and the other is The present invention can also be applied to an apparatus for bending a linear conductor 3 so as to be on the outer peripheral side.

(8) In the above embodiment, for each of the first holding tool 11 and the second holding tool 12, the sandwiching target direction is set in a direction parallel to the short side of the rectangular cross section of the linear conductor 3. Described as an example. However, the embodiment of the present invention is not limited to this. For example, with respect to one or both of the first holding tool 11 and the second holding tool 12, the holding target direction may be set in a direction parallel to the long side of the rectangular cross section of the linear conductor 3. Moreover, about one or both of the first holder 11 and the second holder 12, the clamping target direction is set to both a direction parallel to the short side and a direction parallel to the long side of the rectangular cross section of the linear conductor 3. The one or both of the first holder 11 and the second holder 12 sandwich the linear conductor 3 from both sides in the direction parallel to the short side of the rectangular cross section of the linear conductor 3, The linear conductor 3 may be sandwiched from both sides in a direction parallel to the long side of the rectangular cross section of the linear conductor 3.

(9) In the above-described embodiment, the coil forming apparatus 1 has been described as an example in which a plurality of bending processes are performed on the linear conductor 3 having a rectangular cross-sectional shape orthogonal to the extending direction. However, the embodiment of the present invention is not limited to this. For example, the coil forming apparatus according to the present invention can be applied to an apparatus that performs a plurality of bending processes on a linear conductor whose cross-sectional shape orthogonal to the extending direction is a square or a circle.

(10) In the above embodiment, the configuration in which the coil forming apparatus 1 is an apparatus for forming the coil 5 for a rotating electrical machine has been described as an example. However, the embodiment of the present invention is not limited to this. For example, the coil forming apparatus according to the present invention can also be applied to an apparatus for forming a reactor coil or a transformer coil.

(11) Regarding other configurations as well, the embodiments disclosed herein are illustrative in all respects, and embodiments of the present invention are not limited thereto. In other words, configurations that are not described in the claims of the present application can be modified as appropriate without departing from the object of the present invention.

  The present invention can be used in a coil forming apparatus and a coil forming method for forming a coil by performing a plurality of bending processes on a linear conductor.

1: Coil forming device 3: Linear conductor 3a: Processing target part 5: Coil 10: Transfer device 11: First holder 12: Second holder 13: First reciprocating mechanism 14: Second reciprocating mechanism 20: Processing device 21: Bending tool 22: Bending mechanism 40: Conveyance control device (control device)
F: Transport direction P11: First holding step (holding step)
P12: First feed process (feed process)
P13: First non-holding step (non-holding step)
P14: First return step (return step)
P21: Second holding step (holding step)
P22: Second feed process (feed process)
P23: Second non-holding step (non-holding step)
P24: Second return step (return step)
P31: First bending step (bending step)
P32: First bending return step (bending return step)
P41: Second bending step (bending step)
P42: Second bending return step (bending return step)
S1: Non-bending position S2: Bending position V1: First bending start timing V2: Second bending start timing

Claims (6)

A coil forming apparatus for forming a coil by performing a plurality of bending processes on a linear conductor,
A transport device for transporting the linear conductor in the transport direction;
A processing device that is disposed downstream of the transport device in the transport direction and performs a bending process on the processing target portion of the linear conductor, and
The transport device includes two holders capable of holding the linear conductors arranged along the transport direction, and a first holder and a second holder disposed at different positions in the transport direction; A first reciprocating mechanism for reciprocating the first holder in the transport direction, a second reciprocating mechanism for reciprocating the second holder in the transport direction, the first holder, and the second A control device that controls the operation of the holder, the first reciprocating mechanism, and the second reciprocating mechanism;
The control device, for each of the first holding tool and the second holding tool, holds the state of the holding tool from a non-holding state in which the linear conductor is not held to a holding state in which the linear conductor is held. A feeding operation for moving the holder to the downstream side in the transport direction so that the processing target portion is supplied to the processing apparatus, and a non-switching state of the holder from the holding state to the non-holding state. The holding operation and the return operation for moving the holder to the upstream side in the transport direction are configured to repeatedly execute a plurality of times in the order described,
The control device further includes the non-holding operation of the second holder within a period from the completion of the holding operation of the first holder to the start of the non-holding operation of the first holder. The operation from the start to the completion of the holding operation of the second holding tool is performed, and after the holding operation of the second holding tool is completed, the non-holding operation of the second holding tool is started. A coil forming apparatus configured to perform an operation from the start of the non-holding operation of the first holding tool to the completion of the holding operation of the first holding tool within a period up to. The processing apparatus includes a bending tool for bending the linear conductor, a non-bending position where the linear conductor can be transported by the transport apparatus, and a bending position for bending the linear conductor by pressing the portion to be processed. And a bending mechanism for operating the bending tool between,
The processing apparatus repeats a bending operation for switching the position of the bending tool from the non-bending position to the bending position and a bending return operation for switching the position of the bending tool from the bending position to the non-bending position a plurality of times. Configured to run,
The bending operation includes a first bending start timing set after completion of the feeding operation of the first holder and a second bending start timing set after completion of the feeding operation of the second holder. The start timing of the bending return operation performed after the bending operation started at the first bending start timing is set so as to be started at each of the non-holding times of the first holding tool. The start timing of the bending return operation which is set before the completion of the operation and is executed next to the bending operation started at the second bending start timing is before the completion of the non-holding operation of the second holder. The coil forming apparatus according to claim 1, which is set.   The completion timing of the bending return operation executed next to the bending operation started at the first bending start timing is set before completion of the non-holding operation of the first holder, and the second bending start is started. The coil forming apparatus according to claim 2, wherein a completion timing of the bending return operation that is executed next to the bending operation started at the timing is set before the completion of the non-holding operation of the second holder. . A transport device that includes two holders that can hold the linear conductors arranged along the transport direction and transports the linear conductors in the transport direction, and is disposed downstream of the transport device in the transport direction. A coil forming method for forming a coil by performing a plurality of bending processes on the linear conductor using a coil forming apparatus provided with a processing apparatus configured to perform a bending process on a portion to be processed of the linear conductor Because
A holding step of switching the state of the holder from a non-holding state that does not hold the linear conductor to a holding state that holds the linear conductor;
A feeding step of moving the holder to the downstream side in the transport direction so that the processing target portion is supplied to the processing apparatus;
A non-holding step of switching the state of the holder from the holding state to the non-holding state;
Returning the holder to the upstream side in the transport direction, and
Using the first holder that is one of the two holders, repeatedly performing the holding step, the feeding step, the non-holding step, and the returning step a plurality of times in the order described,
Using the second holding tool which is the other of the two holding tools and is arranged at a position different from the first holding tool in the transport direction, the holding step, the feeding step, and the non-holding step, Repeatedly performing the return step a plurality of times in the order described,
Furthermore, the non-holding using the second holding tool within a period from the completion of the holding process using the first holding tool to the start of the non-holding process using the first holding tool. The process from the start of the process to the completion of the holding process using the second holder is performed, and the second holding tool is used after the holding process using the second holder is completed. Within the period until the start of the non-holding process, the process from the start of the non-holding process using the first holder to the completion of the holding process using the first holder is performed. Coil forming method. A bending step of switching the position of a bending tool provided in the processing apparatus from a non-bending position where the linear conductor can be conveyed by the conveying apparatus to a bending position where the linear conductor is bent by pressing the portion to be processed. When,
A bending return step of switching the position of the bending tool from the bending position to the non-bending position,
The first bending start timing set after the completion of the feeding process using the first holding tool and the second bending start timing set after the completion of the feeding process of the second holding tool, respectively. The bending step is started, and the bending return step to be executed next to the bending step started at the first bending start timing is started before the non-holding step of the first holder is completed, and the second step 5. The coil forming method according to claim 4, wherein the bending return step executed after the bending step started at the bending start timing is started before completion of the non-holding step of the second holder.   The bending return step executed after the bending step started at the first bending start timing is completed before completion of the non-holding step of the first holder, and started at the second bending start timing. The coil forming method according to claim 5, wherein the bending return step executed after the bending step is completed before completion of the non-holding step of the second holder.

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