JP2010157578A - Component supplying apparatus and surface mounting machine with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent transfer failure of electronic components by reliably separating a cover tape. <P>SOLUTION: The component supplying apparatus includes a motor controlling part for controlling a pull-in motor to supply a motor current of a first current value in accordance with acceleration in rotating speed of a feed motor, to supply a motor current of a second current value in accordance with constant rotating speed in the feed motor, and to supply a motor current of a third current value in accordance with deceleration in rotating speed of the feed motor. In addition, the first current value is set larger than the second current value, while the third current value is set equal to or smaller than the second current value. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an electric component supply device and a surface mounter including the same.

  Conventionally, a component supply apparatus is widely known. This is used in a surface mounter for mounting electronic components on a printed circuit board and fulfills the function of supplying electronic components. In general, a component supply apparatus has a structure in which a component supply tape storing electronic components at regular intervals is sent out to a component supply position in front of the apparatus while being pulled out from a reel using the power of a motor. The component supply tape as a carrier is composed of a carrier tape having a component storage portion and a cover tape attached so as to cover the component storage portion, and the cover tape is peeled in the vicinity of the component supply position. Thus, the electronic component is exposed at the component supply position, and the electronic component can be taken out.

Patent Document 1 below discloses a technique for controlling the motor current of the peeling motor to be constant by comparing it with a predetermined value stored in advance. In this way, it is possible to control the tensile load acting on the cover tape, and a certain effect can be expected, such as prevention of breakage of the cover tape.
Japanese Patent Laid-Open No. 2003-243886

  By the way, the delivery motor for delivering the carrier tape does not rotate at a constant speed and usually accompanies acceleration and deceleration. For this reason, even during a single feeding operation, the carrier tape is not always delivered in a constant state, and there are periods of acceleration or deceleration. According to the applicant's knowledge, the degree of peeling of the cover tape with respect to the carrier tape tends to be affected by the delivery state of the carrier tape, and especially while the delivery motor is accelerating, Since it is in a state where it is delivered with a strong force to some extent, there is a possibility that peeling failure may occur in the cover tape.

  The present invention has been completed based on the above circumstances, and an object of the present invention is to reliably peel off a cover tape and prevent a defective delivery of an electronic component.

  The present invention (component supply device) includes a component supply tape formed by adhering a cover tape to the upper surface of a carrier tape in which electronic components are intermittently stored along the longitudinal direction of the tape, and a drive motor as a drive source. In the course of the feed operation, the feed motor has a feed motor that performs a feed operation for intermittently sending the electronic component to a component supply position by rotating the feed motor at a predetermined rotation angle, and a take-up motor as a drive source. A take-off device that exposes the electronic component at the component supply position by taking the cover tape from the carrier tape, and corresponding to the fact that the feed motor is accelerating A motor current having a first current value is supplied to the take-up motor, and a second current value is supplied to the take-up motor in response to the feed motor rotating at a constant speed. A motor control unit that supplies a motor current to supply a motor current of a third current value to the take-up motor in response to the deceleration of the feed motor; and the first current value is a second value The third current value is set larger than the current value, and the third current value is set to a value equal to or smaller than the second current value.

  The present invention (surface mounter) includes a base, the component supply device according to the present invention mounted on the base, and an electronic component that can be sucked and held and supplied through the component supply device. A mounting head that performs a mounting operation for mounting an electronic component on a substrate conveyed on the base; a moving device that moves the mounting head on the base and performs the mounting operation together with the mounting head; Is provided.

The following configuration is preferable as an embodiment of the present invention.
The motor control unit includes a first current control unit that supplies a motor current to the feed motor, a second current control unit that supplies a motor current to the take-up motor, the first current control unit, and the second current. And a CPU for giving a current command to the control unit, and the CPU sequentially gives a current command for acceleration, a current command for constant speed, and a current command for deceleration to the first current control unit. The feed motor is rotated with a trapezoidal speed characteristic having an acceleration range, a constant speed range, and a deceleration range in order, and the CPU responds to the acceleration current command given to the first current control unit. A current command for supplying the motor current at one current value is given to the second current control unit, and the motor current is given at the second current value in response to the constant speed current command given to the first current control unit. The current command to be supplied is the second current It is given to control unit, giving a current command to supply the motor current at corresponding to the current command for decelerating the third current value to be supplied to the first current control unit to the second current controller. With such a configuration, the current control of the take-up motor can be performed by a relatively simple process, and the processing load on the motor control unit can be reduced.

A storage unit that stores information on the speed limit of the take-up motor, a detection unit that performs output according to the rotation state of the take-up motor, and the CPU that stores information on the speed limit stored in the storage unit and the detection And a motor current supplied to the take-up motor on the condition that the take-up motor rotation speed exceeds the limit speed based on the output of the means. A current command for reducing or decreasing the current value of the current is supplied to the second current control unit. If it does in this way, it will become possible to restrain the rotation speed of a take-off motor below to a limit speed.

The CPU takes a motor current having a fourth current value smaller than the third current value from when the electronic component is sent to the component supply position to when the next electronic component is started to be sent. Is supplied to the second current control unit. By doing so, it is possible to apply an appropriate tension to the cover tape from when the electronic component is sent to the component supply position until the next electronic component is started to be sent. Therefore, the cover tape cannot be slackened, and the cover tape can be kept stretched until the next electronic component is sent.

According to the present invention, the motor current having the first current value is supplied to the take-up motor in response to the acceleration of the feed motor, and the take-off motor is in response to the fact that the feed motor is rotating at a constant speed. A motor current having a second current value is supplied, and a motor current having a third current value is supplied to the take-up motor in response to the deceleration of the feed motor. The first current value is set larger than the second current value, and the third current value is set to a value equal to or smaller than the second current value.

  If it does in this way, while a feed motor accelerates, it will be in the state where a strong take-up force works in a peeling direction on a cover tape via a take-off device. Therefore, as the feed motor is accelerated, the cover tape can be surely taken out even if the carrier tape is sent out by the delivery device with a certain force.

<Embodiment 1>
A first embodiment embodying the present invention will be described. 1 is a front view of the surface mounter 10, FIG. 2 is a plan view of the surface mounter 10, and FIG. 3 is a partially enlarged view showing a support structure of the head unit. As shown in FIGS. 1 and 2, the surface mounter 10 has various devices arranged on a base 11 having a flat upper surface. In the following description, the longitudinal direction of the base 11 (the left-right direction in FIGS. 1 and 2) is referred to as the X direction, and the Y direction and the Z direction are defined in the directions of FIGS. .

1. Overall structure of the surface mounter 10 In the center of the base 11, a transfer conveyor (hereinafter also simply referred to as a conveyor) 20 for transferring a printed wiring board is disposed. The conveyor 20 includes a pair of conveyor belts 21 that circulate and drive in the X direction. When the substrate P is set so that both the belts 21 are installed, the substrate P on the upper surface of the belt moves in the belt driving direction due to friction with the belt. It is supposed to be sent.

  In the present embodiment, the right side shown in FIG. 2 is the entrance, and the substrate P is carried into the machine through the conveyor 20 from the right side shown in FIG. The board | substrate P carried in is conveyed to the work position (position shown with the dashed-two dotted line in FIG. 2) G by the conveyor 20, and is stopped there.

  Next, the mounting work apparatus 100 that performs the mounting work of the electronic component W at the work position G will be described. The mounting work device 100 includes a mounting head 185 that sucks and holds an electronic component W supplied by a feeder FD, which will be described later, and a moving device 130. This moving device 130 is a Cartesian coordinate robot provided with three drive axes 145, 155, and 165 orthogonal to each other in XYZ. By driving these three drive axes 145, 155, and 165 in a composite manner, the mounting head 185 is moved. Move to an arbitrary position on the base 11.

  Specifically, as shown in FIG. 2, a pair of support legs 141 are installed on the base 11. Both the support legs 141 are located on both sides (both sides in the X direction) of the work position G, and both extend straight in the Y direction (up and down direction in FIG. 2).

  Guide rails (Y-direction guide shafts) 142 extending in the Y direction are installed on the upper surfaces of the support legs 141 on both support legs 141, and the head support body is fitted to both the left and right guide rails 142 while fitting both ends in the longitudinal direction. 151 is attached.

  In FIG. 2, a Y-axis ball screw shaft (Y-direction drive shaft) 145 extending in the Y direction is attached to the right support leg 141, and a ball nut 146 is screwed onto the Y-axis ball screw shaft 145. . A Y-axis motor 147 is provided at the shaft end of the Y-axis ball screw shaft 145.

  When the Y-axis motor 147 is energized, the ball nut 146 advances and retreats along the Y-axis ball screw shaft 145. As a result, the head support 151 fixed to the ball nut 146 and the head unit 160 described below are guided by the guide rail 142. (Y-axis servo mechanism).

  As shown in FIG. 3, a guide member (X direction guide shaft) 153 extending in the X direction is installed on the head support 151, and the head unit 160 is movably attached to the guide member 153. . An X-axis ball screw shaft (X-direction drive shaft) 155 extending in the X direction is attached to the head support 151, and a ball nut 156 is screwed onto the X-axis ball screw shaft 155.

  An X-axis motor 157 is provided at the shaft end of the X-axis ball screw shaft 155. When the X-axis motor 157 is energized, the ball nut 156 advances and retracts along the X-axis ball screw shaft 155. The head unit 160 fixed to the ball nut 156 moves in the X direction along the guide member 153 (X-axis servo mechanism).

  Therefore, the head unit 160 can be moved in the horizontal direction (XY direction) on the base 11 by controlling the X-axis servo mechanism and the Y-axis servo mechanism in combination.

  The head unit 160 includes a support bracket 163 as shown in FIG. 4, and a Z-axis ball screw shaft (Z-direction drive shaft) 165 is attached to the support bracket 163 with its axis facing up and down. . A ball nut 171 is screwed onto the Z-axis ball screw shaft 165, and a mounting head 185 is attached to the ball nut 171. The ball nut 171 is locked to the head unit 160 by guide means (not shown).

  When the Z-axis motor 167 is energized, the ball nut 171 moves up and down along the Z-axis ball screw shaft 165. As a result, the mounting head 185 fixed to the ball nut 171 can be moved up and down with respect to the head unit 160. It has become.

  A suction nozzle 186 is provided at the tip of the mounting head 185. The suction nozzle 186 is configured so that a negative pressure is supplied from a negative pressure means (not shown), and generates a suction force at the tip of the head.

  In the present embodiment, a plurality of mounting heads 185 are provided on the head unit 160 in a row in the X direction. Each mounting head 185 is configured to be capable of rotating around the axis for each mounting head 185 by driving an R-axis motor (not shown) attached to the head unit 160.

  Further, around the work position G at the center of the base, as shown in FIG. A large number of feeders (detailed structure will be described later) FDs are arranged side by side in these component supply units 15 via a carriage DR. The feeder FD has a function of supplying electronic components to be mounted on the substrate P.

  From the above, the feeder equipped in the component supply unit 15 is appropriately moved up and down while the head unit 160 is moved back and forth between the component supply unit 15 and the work position G in the center of the base. The electronic component W can be taken out from the FD, and the taken out electronic component W can be mounted on the substrate P backed up at the work position G. In addition, the board | substrate P which finished the mounting process is carried to the left direction in FIG. 2 through the conveyor 20, and is the structure carried out outside the apparatus.

2. Parts supply tape 30 and feeder FD
FIG. 5 is a perspective view of the component supply tape 30, and FIG. 6 is a side view of the feeder FD. FIG. 7 is an enlarged view of the front portion of the feeder. The component supply tape 30 includes a carrier tape 31 in which electronic components W are stored at a constant interval Lo along the longitudinal direction of the tape, and a cover tape 37.

  As shown in FIG. 5, the carrier tape 31 has hollow component storage portions 32 opened upward at regular intervals Lo, and the electronic components W are stored in the respective component storage portions 32. Further, on one side of the carrier tape 31, engagement holes 33 penetrating vertically along the edge thereof are provided at regular intervals. The cover tape 37 is attached to the upper surface of the carrier tape 31 and covers the upper surface of the component storage unit 32.

  The component supply tape 30 configured as described above is supported by being wound around a reel (not shown) at a rear position of a feeder FD described below.

  The feeder FD includes a delivery device 50, a take-up device 60, a lock device 76, a main body 40 with the container 45 fixed to the rear portion, and the like. The main body 40 and the container 45 are provided with a passage 41 through which the component supply tape 30 passes. The passage 41 extends horizontally straight from the lower end of the rear end of the container 45 toward the front. And it continues to the main body 40, then takes a path that goes obliquely upward, goes to the upper part of the main body 40, and faces the upper surface of the main body 40 at the front part.

  A delivery device 50 described below is arranged on the front side (right side in FIG. 6) of the main body 40 with the passage 41 as a boundary, and a take-up device 60 is provided on the opposite side with the passage 41 as a boundary.

  The sending device 50 performs a feeding operation for intermittently sending the electronic component W to the component supply position O, and includes a feed motor (brushless motor) 55, a speed reducer 53, a sprocket 51, and the like. The feed motor 55 is disposed at a position slightly closer to the center of the main body 40.

  As shown in FIG. 7, the sprocket 51 is integrally formed with a driven gear 52 on the side surface, and is disposed at a position near the front of the main body 40 and almost directly below the component supply position O. Locking teeth 51A are provided at equal intervals on the outer peripheral surface of the sprocket 51, and are engaged with the engagement holes 33 of the component supply tape 30 passed through the upper surface of the front portion of the feeder FD via the passage 41. It has a configuration.

  The reduction gear 53 is composed of four reduction gears 54A, 54B, 54C, 54D. Specifically, the leading reduction gear 54A is a spur gear, and the remaining three reduction gears 54B to 54C are all two-stage gears in which a large gear and a small gear are integrally formed.

  The adjacent small gear and the large gear mesh with each other, the leading reduction gear 54A meshes with the drive gear (motor gear) 56 of the feed motor 55, and the small gear of the trailing reduction gear 54D meshes with the driven gear 52 of the sprocket 51. ing.

  Thus, the thing of this embodiment comprises the gear train in which six gears, the motor gear 56, the reduction gears 54A-54D, and the driven gear 52 transmit power (power transmission path J).

  Therefore, when the feed motor 55 is energized and rotated in the forward rotation direction (R2 direction in FIG. 6), the power of the feed motor 55 is transmitted to the sprocket 51 via the power transmission path J, and the sprocket 51 is transmitted to the sprocket 51 in FIG. Rotate in the R1 direction. As a result, the sprocket 51 draws the locked carrier tape 31 horizontally in front of the feeder (right side in FIG. 6), so that the component supply tape 30 is fed from the reel toward the component supply position O in front of the apparatus. it can.

  In the present embodiment, when the feed motor 55 is rotated once (360 degrees), the sprocket 51 is rotated accurately by a certain angle, and the component supply tape 30 and the electronic component W are the storage intervals of the electronic component W. Only the distance Lo is sent.

  Moreover, the code | symbol 80 shown in FIG. 8 is a tape holder, and this tape holder 80 bears the function which guides the component supply tape 30 passed through the front upper surface of the feeder FD through the channel | path 41, A pair of left and right guide walls 81 and 82 and a rear ceiling wall 83 that connects the guide walls are provided.

  A slit 86 is provided on the front side of the rear ceiling wall 83 of the tape holder 80, and a component pressing portion 85 is formed on the front side thereof. The slit 86 changes the direction of the cover tape 37 attached to the upper surface of the carrier tape to the take-out device 60 side behind the feeder (hereinafter also referred to as a peeling direction). Further, the component pressing portion 85 has a function of blocking the electronic component W from popping out by closing the upper surface of the component storage portion 32 of the carrier tape 31 until the component supply position O is reached after the cover tape 37 is peeled off. It is what you bear.

  Returning to FIG. 6 and continuing the description, the take-up device 60 includes a take-up motor (brushless motor) 65, a speed reducer 63, a take-up roller 61 in which a driven gear 62 is integrally formed on a side surface, and a pinch roller 71.

  The reduction gear 63 is composed of four reduction gears 64A, 64B, 64C, and 64D. These four reduction gears 64A to 64D are all two-stage gears in which a large gear and a small gear are integrally formed. The adjacent small gear and the large gear mesh with each other, the large gear of the leading reduction gear 64A meshes with the drive gear (motor gear) 66 of the take-up motor 65, and the small gear of the rear reduction gear 64D of the take-off roller 61 The gear is engaged with the driven gear 62.

  Thus, the thing of this embodiment comprises the gear train which six gears, the motor gear 66, the reduction gears 64A-64D, and the driven gear 62 transmit motive power. Therefore, when the take-up motor 65 is driven, the power is transmitted through the speed reducer 63 and the take-up roller 61 is rotated.

  The pinch roller 71 is attached to a lever 70 that can swing about a hinge 72. The lever 70 is provided with a coil spring (not shown), and a downward biasing force is applied to the lever 70 so that the pinch roller 71 is elastically contacted with the take-up roller 61 with a constant pressing force. It has become.

  From the above, when the front end portion of the cover tape 37 whose direction is changed by the slit 86 is sandwiched between the rollers 61 and 71 and the take-up motor 65 is driven in this state, the both ends of the rollers 61 and 71 are interposed. It is possible to apply a pulling force F to the back of the feeder (leftward in FIG. 6) on the cover tape 37. When the component supply tape 30 passes through the slit 86 during the feeding operation, the cover tape 37 is covered with the cover tape 37. The tape 37 can be peeled off.

  Further, reference numeral 47 shown in FIG. 6 is a control box, and reference numeral 48 is a connector. In the control box 47, a controller 200 for controlling the feed motor 55 and the take-up motor 65 constituting the feeder FD is accommodated.

  The connector 48 is to be electrically connected to the surface mounter main body (portion of the surface mounter 10 excluding the feeder FD), and power is supplied to the controller 200 from the mounter main body through the connector 48. Control signals such as supply and a feed command for an electronic component W to be described later are transmitted.

Next, the electrical configuration of the feed motor 55, the take-up motor 65, and the controller 200 will be described with reference to FIGS.
3. Configuration of Feed Motor 55 As shown in FIG. 9, the feed motor (brushless motor) includes a stator 58, a magnet rotor 57, and hall sensors 59A, 59B, and 59Z that detect the magnetic pole positions of the magnet rotor 57.

  A stator (armature) 58 is obtained by winding a U-phase, V-phase, and W-phase three-phase drive coils 58U, 58V, and 58W around a yoke while shifting them by 120 degrees in electrical angle. It is. The magnet rotor 57 is a five-pole pair including five pairs of poles that are pairs of N poles and S poles.

  Both the hall sensor 59 </ b> A and the hall sensor 59 </ b> B are linear output sensors that output a sine wave analog detection signal as the magnet rotor 57 rotates. These Hall sensors 59A and 59B are arranged such that the phase of the detection signal is shifted by 90 degrees in electrical angle as shown in FIG.

  Then, the magnetic pole position θ of the magnet rotor 57 is calculated based on the outputs of both the hall sensors 59A and 59B (details will be described later), and the drive coils 58U, 58V and 58W of the respective phases are energized according to the magnetic pole position θ. The feed motor 55 can be rotated by switching the motor current.

  The hall sensor 59Z is arranged between the hall sensor 59A and the hall sensor 59B in the circumferential direction. The Hall sensor 59Z is for detecting the origin position of the rotor 57, and is paired with a reference piece 57Z embedded in the magnet rotor 57. As shown in FIG. 9, the hall sensor 59Z is configured to output an origin detection signal when the reference piece 57Z of the magnet rotor 57 comes to the front.

4). As shown in FIG. 11, the take-up motor 56 (brushless motor) includes a stator 68, a magnet rotor 67, and three hall sensors (corresponding to “detecting means” of the present invention) 69 </ b> A, 69 </ b> B, 69C.

  A stator (armature) 68 is obtained by winding U-phase, V-phase, and W-phase three-phase drive coils 68U, 68V, 68W, which are star-connected or Δ-connected to a yoke, while shifting the electrical angle by 120 degrees. It is. The magnet rotor 67 is a five-pole pair including five pairs of poles that are pairs of N and S poles. The three hall sensors 69A, 69B, and 69C detect the magnetic pole position of the magnet rotor 67. The three hall sensors 69A, 69B, and 69C are arranged at intervals of 120 degrees as shown in FIG. 12, and the detection signals of rectangular waves are generated at different timings as the magnet rotor 67 rotates as shown in FIG. Output.

  The take-up motor 65 can be rotated by switching the motor currents energized to the drive coils 68U, 68V, 68W based on the rectangular wave detection signals output from the hall sensors 69A to 69C.

5). Configuration of Controller As shown in FIG. 14, the controller 200 includes a motor control unit 210, a storage unit 223, an A / D conversion circuit 225, and the like. The motor control unit 210 includes a CPU 211, a first current control unit 213, a second current control unit 215, and a timer circuit 217. The CPU 211 controls the entire feeder FD, information stored in the storage unit 223, motor rotation status obtained from the motor-side sensors 59A, 59B, 59Z, 69A, 69B, 69C, and 220, and energization status. A current command is given to the first current control unit 213 and the second current control unit 215 based on the information related to the above.

  The first current control unit 213 has a function of supplying a motor current to the drive coils 58U, 58V, and 58W of the feed motor 55 based on a current command given from the CPU 211. The second current control unit 215 has a function of supplying a motor current to the drive coils 68U, 68V, 68W of the take-up motor 65 based on a current command given from the CPU 211.

The storage unit 223 stores the following information in advance.
Information required to control the feed motor (1) Necessary rotation angle of the feed motor 55 required to feed the electronic component W by the distance Lo (specifically, 360 degrees)
(2) Data necessary for controlling the feed motor 55 with the trapezoidal speed characteristics shown in FIG. 15 (3) Data relating to current commands such as energization direction and current value

  In the present embodiment, the target speed ωa that is the switching speed from acceleration to deceleration, the deceleration angle θd that is the switching point from constant speed to deceleration, and the like are stored as the data of (2) (see FIG. 15). ).

Information necessary to control take-up motor 65 (4) Data of current values “Ia”, “Ic”, “Id”, “Ip” (5) Data of current threshold “Ith”

  The motor control unit 210 of the controller 200 configured as described above is configured to receive detection signals output from the hall sensors 59 and 69 on the motor side. Specifically, analog detection signals output from the hall sensors 59A and 59B of the feed motor 55 are converted into digital signals by the A / D conversion circuit 225, and then taken into the motor control unit 210. The detection signal output from the hall sensor 59Z of the motor 55 and the detection signal output from the hall sensors 69A, 69B, 69C of the take-up motor 65 are taken into the motor control unit 210.

  Reference numeral 220 shown in FIG. 14 is a current sensor. The current sensor 220 detects the motor current flowing in the drive coils 68U, 68V, 68W of the take-up motor 65. The detection signal of the current sensor 90 is taken into the motor control unit 210. As a result, the CPU 211 of the motor control unit 210 can detect the current value actually flowing in the drive coils 68U, 68V, 68W of the take-up motor 65.

6). Various Processes Performed by the CPU 211 Hereinafter, various processes performed by the CPU 211 will be described in the order of a process related to the feed motor 55 and a process related to the take-up motor 65. The CPU 211 detects the rotation state of the feed motor 55 based on detection signals output from the hall sensors 59A and 59B.

Specifically, the magnetic pole position θ of the magnet rotor 57 is calculated by the following equation (A) (magnetic pole position detection function).
θ = arctan (sint / cost) (A)
sint: the value of the analog detection signal of the hall sensor 59A cost: the value of the analog detection signal of the hall sensor 59B

  Further, the CPU 211 calculates the time of the magnetic pole position θ from the time information obtained from the time measuring circuit (oscillation circuit, timer, etc.) 217 and the magnetic pole position θ at each time point of the magnet rotor 57 calculated by the above equation (A). The change, that is, the rotational speed (angular speed ω) of the feed motor 55 is also detected (rotational speed detection function).

  The CPU 211 controls the feed motor 55 in accordance with the trapezoidal (symmetrical trapezoidal) speed characteristic shown in the middle of FIG.

  Specifically, the CPU 211 detects the rotation speed and rotation angle of the feed motor 55, and controls the “acceleration current command”, “constant speed current command”, and “deceleration current command” in the first current control. By giving to the part 213 in order, the feed motor 55 is rotated according to the trapezoidal speed characteristic. Here, the current command is a command related to “the direction in which the motor current is applied” and “the current value of the motor current (specifically, the duty ratio)”.

  The “current command for acceleration” supplies motor current in the normal rotation direction to the drive coils 58U, 58V, 58W of the feed motor 55, and the current value of the motor current is sufficient to accelerate the feed motor 55. A slightly larger current value (large duty ratio) is set. Thereby, when the “acceleration current command” is given to the first current control unit 213, a motor current having a large current value is supplied to each drive coil 58 U, 58 V, 58 W of the feed motor 55 through the first current control unit 213. Since the motor torque is supplied, the motor torque exceeds the load torque, and the feed motor 55 is accelerated.

  The “current command for constant speed” supplies a motor current in the forward direction to the drive coils 58U, 58V, 58W of the feed motor 55, and the current value of the motor current is a constant speed rotation of the feed motor 55. Is set to a small current value (a small duty ratio) to maintain the current. Thus, when a “current command for constant speed” is given to the first current control unit 213, a motor current having a small current value is supplied to each drive coil 58 U, 58 V, 58 W of the feed motor 55 through the first current control unit 213. Is supplied, the feed motor 55 rotates at a constant speed.

  The “deceleration current command” supplies a motor current in the reverse direction to the feed motor 55, and the current value of the motor current is a large current value (duty ratio) that is slightly large enough to decelerate the feed motor 55. Large). Thus, when the “deceleration current command” is given to the first current control unit 213, a brake is applied to the magnet rotor 57 of the feed motor 55 by the reverse current flowing through the first current control unit 213. 55 decelerates.

  The current command given from the CPU 211 to the first current control 213 includes a “stop current command”. The “stop current command” is for making the motor current supplied to the feed motor 55 zero.

  Then, the CPU 211 gives a current command described below to the second current control unit 215, whereby the magnitude of the motor current supplied to the take-up motor 65, and thus the peeling direction acting on the cover tape 37 via the take-up device 60. Control the pulling force F.

  The current command given to the second current control unit 215 by the CPU 211 is as shown in FIG. 16, and the first current value “Ia” corresponds to the “current command for acceleration” given to the first current control unit 213. The second current control unit 215 is given a current command for supplying the motor current at. Further, in response to the “constant speed current command” given to the first current control unit 213, a current command for supplying the motor current at the second current value “Ic” is given to the second current control unit 215.

  In response to the “deceleration current command” given to the first current control unit 213, the CPU 211 gives the second current control unit 215 a current command for supplying the motor current at the third current value “Id”. In response to the “stop current command” given to the first current control unit 213, a current command for supplying the motor current at the fourth current value “Ip” is given to the second current control unit 215.

  The magnitude relationship among these four current values “Ia”, “Ic”, “Id”, and “Ip” is as shown in FIG. 15, where the first current value “Ia” is the largest, and then the second current value. “Ic” and the third current value “Id” are set large, and the fourth current value “Ip” is set small.

  The second current value “Ic” and the third current value “Id” indicate that the take-off force F (see FIG. 8) acting on the cover tape 37 via the take-off device 60 causes the cover tape 37 to be removed from the carrier tape 31. The minimum force Fo1 necessary for peeling off (for example, the adhesive force of the carrier tape 31, see FIG. 5) is set to be somewhat larger.

  The first current value “Ia” is set to be about several times the second current value “Ic”. Therefore, when the motor current having the first current value “Ia” is supplied to the take-up motor 65, a strong take-up force F is applied to the cover tape 37 via the take-up device 60.

  Further, the fourth current value “Ip” is set to a current value at which a take-off force F that does not cause slack through the take-up device 60 acts on the cover tape 37.

7). Explanation of Operation Next, a feed operation for sending the electronic component W to the component supply position O will be described with reference to a processing flow (FIG. 17) executed by the CPU 211. Here, the description will be made assuming that the feeder FD loaded with the component supply tape 30 is mounted on the component supply unit 15 of the base 11 via the carriage DR, and both the feed motor 55 and the take-up motor 65 are provided. Initially, it is assumed that the motor current is not supplied.

  After the attachment to the base 11, the CPU 211 of the feeder FD first determines whether or not there is an electronic component W feed command from the main controller 300 in S10. If there is no feed command, the No determination state continues. Therefore, the CPU 211 enters a standby state waiting for a feed command from the main control device 300.

  When a feed command for the electronic component W is given from the main control device 300 to the feeder FD, a YES determination is made in S10, and the processing of the CPU 211 proceeds to the next stage, that is, S20.

  In S20, the CPU 211 gives a current command (specifically, a current command for supplying the take-up motor 65 with the motor current having the current value Ia) to the second current control unit 215. As a result, the motor current starts to be supplied to the drive coils 68U, 68V, 68W of the take-up motor 65 through the second current control unit 215 (S20, energization start).

  Therefore, the current value flowing through the drive coils 68U, 68V, 68W of the take-up motor 65 increases from zero and gradually approaches the first current value Ia. When the motor current increases to a certain extent, the take-up motor 65 starts to rotate.

  As a result, both rollers 61 and 71 of the take-up device 60 rotate, and the cover tape 37 whose direction is changed to the rear of the feeder by the slit 86 is taken up by the frictional force. As a result, the cover tape 37 is in a tensioned state as a result of the loosening being taken, and at the same time, the take-up motor 65 is locked and temporarily stopped.

  Then, in parallel with the supply of the motor current to the take-up motor 65, the CPU 211 performs a process of determining the current value of the motor current flowing through the drive coils 68U, 68V, 68W of the take-up motor 65 (S30). In the present embodiment, the current threshold value that is the determination criterion is set to “Ith”. The current threshold “Ith” is set to a value larger than “Ip” and smaller than “Ic” (Ip <Ith <Ic).

  By doing so, a determination is made as long as the current value of the motor current flowing through the drive coils 68U, 68V, 68W of the take-up motor 65 is lower than the current threshold value “Ith”, and the control state in which the determination process of S30 is repeated. Therefore, the next process is not executed.

  If the current value of the motor current flowing through the take-up motor 65 exceeds the current threshold value “Ith”, a YES determination is made in the determination process of S30, and the next process, that is, the electronic control is performed under the control of the CPU 211. The feeding operation of the component W is started (S40).

  Note that the start condition of the feeding operation of the electronic component W imposes that the motor current of the take-up motor 65 exceeds the current threshold “Ith” when the take-up device 60 applies the cover tape 37 at the start of the feed operation. This is because a sufficient pulling force F is applied.

  Thereafter, the CPU 211 first gives an “acceleration current command” to the first current control unit 213. Accordingly, a motor current having a large current value is supplied to the drive coils 58U, 58V, and 58W of the feed motor 55 through the first current control unit 213. As a result, the feed motor 55 is accelerated immediately after the start of driving, and the rotational speed (angular speed ω) rises upward (see FIG. 15). Then, with the rotation of the feed motor 55, the feed device 50 is operated, and the feed operation of the component supply tape 30 is started.

  Further, the CPU 211 provides the second current control unit 215 with a current command for supplying the motor current with the first current value “Ia” at the same time as giving the “current command for acceleration” to the first current control unit 213. Thereby, the motor current having the first current value Ia is supplied to the drive coils 68U, 68V, 68W of the take-up motor 65 through the second current control unit 215.

  As described above, the first current value Ia is set to a large current value. Therefore, a strong pulling force F acts in the peeling direction (backward of the feeder) on the cover tape 37 via the pulling device 60 (see FIGS. 6 and 8). Therefore, immediately after the start of the feeding operation, the cover tape 37 is almost surely peeled off from the carrier tape 31 and only the carrier tape 31 is fed ahead of the slit 86. Thereafter, the carrier tape 31 is fed toward the component supply position O in the front portion of the feeder through the bottom of the component pressing portion 85 while being guided by the tape holder 80 on both sides in the width direction.

  Since the CPU 211 continues to give the “current command for acceleration” to the first current control unit 213 until the angular speed ω of the feed motor 55 reaches the target speed ωa, the feed motor 55 continues to be accelerated. Further, the CPU 211 provides the second current control unit 215 with a current command for supplying the motor current at the first current value “Ia” while continuing to provide the “current command for acceleration” to the first current control unit 213. to continue. Thereby, during acceleration of the feed motor 55, the motor current of the first current value Ia is continuously supplied to the drive coils 68U, 68V, 68W of the take-up motor 65 through the second current control unit 215 (S50).

  Then, when the angular speed ω of the feed motor 55 reaches the target speed ωa, the CPU 211 gives a “current command for constant speed” to the first current control unit 213. As a result, the drive coils 58U, 58V, and 58W of the feed motor 55 are supplied with a motor current having a small current value enough to maintain constant speed rotation through the first current control unit 213. As a result, the feed motor 55 thereafter continues to rotate while maintaining the target speed wa, and the feed speed of the component supply tape 30 becomes constant (constant speed range).

  Further, the CPU 211 changes the current command given to the first current control unit 213 from “for acceleration” to “for constant speed”, and at the same time, issues a current command for supplying the motor current at the second current value “Ic”. This is given to the second current control unit 215. As a result, the motor current having the second current value “Ic” is supplied to the drive coils 68U, 68V, 68W of the take-up motor 65 through the second current control unit 215.

  As a result, the take-off force F for pulling the cover tape 37 in the peeling direction is smaller than that in the acceleration region, but the force F is the minimum force Fo1 required for peeling the cover tape 37 from the carrier tape 31. Somewhat bigger.

  Therefore, the cover tape 37 is easily peeled off from the carrier tape 31 while the carrier tape 31 and the first electronic component W accommodated therein are sent toward the component supply position O at a constant speed. Then, the peeled cover tape 37 is sent to the container 45 by the rotation of the take-off motor 65.

  Note that the CPU 211 continues to give a “current command for constant speed” to the first current control unit 213 until the rotation angle θ of the feed motor 55 reaches the deceleration angle θd, so the feed motor 55 rotates at a constant speed. Continue (constant speed range). Further, the CPU 211 gives a current command for supplying the motor current at the second current value “Ic” to the second current control unit 215 while continuing to give the “current command for constant speed” to the first current control unit 213. Keep giving. Accordingly, during the constant speed rotation of the feed motor 55, the motor current of the second current value “Ic” is continuously supplied to the drive coils 68U, 68V, 68W of the take-up motor 65 through the second current control unit 215 (S60).

  Then, when the rotation angle θ of the feed motor 55 reaches the deceleration angle θd, the CPU 211 gives a “current command for deceleration” to the first current control unit 213. Thereby, since the motor current in the reverse direction is supplied to the feed motor 55 through the first current control unit 213, the feed motor 55 is decelerated as shown in FIG. 15, and the angular velocity ω is reduced (deceleration region). Thereby, the electronic component W accommodated in the carrier tape 31 gradually approaches the component supply position O while reducing the speed.

  In addition, the CPU 211 changes the current command given to the first current control unit 213 from “for constant speed” to “for deceleration”, and at the same time, issues a current command for supplying the motor current at the third current value “Id”. This is given to the second current control unit 215. As a result, the motor current of the third current value “Id” is supplied to the drive coils 68U, 68V, 68W of the take-up motor 65 through the second current control unit 215.

  Since the third current value “Id” is equal to the second current value “Ic”, it is necessary to peel the cover tape 37 from the carrier tape 31 in the deceleration region, as in the constant speed region. A pulling force F that is somewhat greater than the minimum force Fo1 is applied via the pulling device 60. Therefore, the cover tape 37 can be easily peeled off from the carrier tape 31 even in this deceleration region.

  The CPU 211 continues to give the “current command for deceleration” to the first current control unit 213 until the rotation angle θ of the feed motor 55 reaches the required rotation angle (360 degrees in this case). Continues to decelerate (deceleration range). Further, while the CPU 211 continues to give the “current command for deceleration” to the first current control unit 215, the CPU 211 gives a current command for supplying the motor current at the third current value “Id” to the second current control unit 215. to continue. As a result, during the deceleration of the feed motor 55, the motor current of the third current value Id is continuously supplied to the drive coils 68U, 68V, 68W of the take-up motor 65 through the second current control unit 215 (S70).

  Eventually, when the rotation angle θ of the feed motor 55 reaches the required rotation angle (360 degrees in this case), the first electronic component W accommodated in the carrier tape 31 reaches the component supply position O. Then, the CPU 211 gives a “stop current command” to the first current control unit 213 at the same time as the rotation angle θ of the feed motor 55 reaches the required rotation angle (360 degrees).

  Thereby, the supply of the motor current through the first current control unit 213 to the drive coils 58U, 58V, 58W of the feed motor 55 is cut off, and the feed motor 55 and the take-up device 60 are stopped (stopped state).

  In addition, the CPU 211 gives a “current command for stop” to the first current control unit 213 and at the same time issues a current command for supplying the motor current to the second current control unit 215 at the fourth current value “Ip”. This is given to the second current control unit 215. Thereby, the motor current of the fourth current value “Ip” is supplied to the drive coils 68U, 68V, 68W of the take-up motor 65 through the second current control unit 215 (S80).

  Thus, the feeding operation for the first electronic component W is completed. Then, after the CPU 211 finishes feeding the first electronic component W, the CPU 211 returns to a standby state waiting for the next feed command (a state in which the loop R shown in FIG. 17 is repeated).

  During the standby state waiting for the next feed command, the motor current having the fourth current value “Ip” is supplied to the take-up motor through the second current control unit 215, so that the carrier tape 31 is passed through the take-up device 60. Therefore, the take-up force F always acts. Therefore, the carrier tape 31 does not become slack during standby.

  As shown in FIG. 15, the fourth current value “Ip” is set to a value smaller than the second current value “Ic” and the third current value “Id”, and the magnitude of the current value is the cover. The minimum current value necessary to prevent the tape 37 from slackening. By doing so, it is possible to avoid breakage of the cover tape 37 in the standby state.

  On the other hand, after the feeding operation is completed, an operation of mounting the electronic component W sent to the component supply position O on the substrate P positioned on the base 11 is performed by the mounting work device 100 using the mounting head 185. Will be.

  Then, when a feed command for the electronic component W is given again from the main controller 300 to the feeder FD side, a YES determination is made in the determination process of S10, and the process proceeds to S20. Thus, according to the same procedure as described above, the feed motor 55 and the take-up motor 65 are controlled under the control of the CPU 211, and the second electronic component W is sent toward the component supply position O. Become.

8). Effect According to the present embodiment, the current values “Ia”, “Ic”, and “Id” of the motor current supplied to the take-up motor 65 are switched according to the speed characteristics of the feed motor 55. In response to the acceleration region of the feed motor 55, the take-off motor 65 is supplied with a motor current having the first current value Ia. A strong pulling force F works via the pulling device 60.

  Therefore, in the acceleration region, the cover tape 37 can be reliably peeled off from the carrier tape 31 even though the carrier tape 31 is fed in the feeding direction by a slightly stronger force by the sprocket 51. Here, if the value of the first current value “Ia” is set to be smaller than the setting of the embodiment, the cover tape 37 is sent without being peeled together with the carrier tape 31 in the acceleration region, and the component pressing portion 85. There is a risk of causing poor transport such as diving underneath. In this regard, as in the present embodiment, if the take-up force F acting in the peeling direction with respect to the cover tape 37 works through the take-up device 60 while the feed motor 55 is in the acceleration range, this is the case. Rarely cause poor conveyance.

  In the present embodiment, the motor current having the second current value “Ic” corresponding to the constant speed region of the feed motor 55 and the motor current having the third current value “Id” corresponding to the deceleration region of the feed motor 55 are used. Is supplied to the take-off motor 65, and both of these current values “Ic” and “Id” are smaller in level than the first current value “Ia” corresponding to the acceleration region.

  By doing so, the carrier tape 31 can be stably fed since only a small take-up force F acts on the component supply tape 30 after the feed motor 55 enters the constant speed range. The electronic component W can be accurately delivered to the component supply position O. In this way, the mounting head 185 can accurately pick up the electronic component from the component supply position O without any positional deviation, and thus the mounting accuracy of the electronic component W can be increased.

  In this embodiment, the CPU 211 controls both the first current control unit 213 and the second current control unit 215, and the CPU 211 gives “acceleration”, “constant speed”, “ Corresponding to the current command for “deceleration”, the current command given to the second current control unit 215 is switched to the current commands for “Ia”, “Ic”, and “Id”. In this way, the current values “Ia”, “Ic”, “Id” of the motor current supplied to the take-up motor 65 corresponding to “acceleration”, “constant speed”, “deceleration” of the feed motor 55 are set. Since switching can be performed easily, there is almost no processing load on the CPU 211, and this point is also effective.

<Embodiment 2>
A second embodiment embodying the present invention will be described. In the first embodiment, the example in which the motor currents having the current values “Ia”, “Ic”, “Id”, and “Ip” are supplied to the take-up motor 65 according to the speed characteristics on the feed motor 55 side has been described. In the second embodiment, the control described below is added to the current value control of the first embodiment.

  While the motor 211 of the motor control unit 210 supplies the motor current I to the take-up motor 65, the number of detection signals output from the hall sensors 69A, 69B, 69C included in the take-up motor 65 as shown in FIG. (For example, 18 in FIG. 13) A process of counting N in a fixed time unit (1 minute in the present embodiment) is performed (S100).

  Then, when the CPU 211 counts the output number N, it performs a determination process for comparing it with the reference value No. The reference value No is the number of detection signals output from the hall sensors 69A, 69B, and 69C per minute when the take-up motor 65 rotates at the speed limit (rpm). This reference value is stored in advance in the storage unit 223, and is read from the storage unit 223 each time a determination process is performed.

  When the output number N is below the reference value No (determined as YES in S110), the CPU 211 supplies the take-up motor 65 with the motor current I at the current value as described in the first embodiment. The normal control is performed (S120). As a result, the take-up motor 65 is supplied with current at a current value of “Ip” corresponding to the stopped state of the feed motor 55, and supplied with current value of “Ia” corresponding to the acceleration range. The current is supplied at a current value of “Ic” corresponding to the constant speed region, and the current is supplied at a current value of “Id” corresponding to the deceleration region. That is, the take-up motor 65 is controlled without any difference from the case of the first embodiment.

  On the other hand, when the output number N exceeds the reference value No (determination No in S110), the CPU 211 temporarily sets the current value of the motor current I supplied to the take-up motor 65 to the second current control unit 215. The reduction control is performed to reduce the current value to zero (S130).

  Thereby, for example, when the motor current is supplied to the take-up motor 65 at the current value “Ip” at the time of determination, the current value is suppressed to “Ip” or less, and the current value “Ia” is supplied to the take-up motor 65. When the motor current is supplied at “”, the current value is suppressed to “Ia” or less. When the motor current is supplied to the take-up motor 65 at the current value “Ic”, the current value is suppressed to “Ic” or less, and the motor current is supplied to the take-up motor 65 at the current value “Id”. When supplied, the current value is suppressed to “Id” or less.

  As described above, in the second embodiment, when the rotation speed of the take-up motor 65 exceeds the limit speed (determination No in S110), the current value supplied to the take-up motor 65 is automatically controlled under the control of the CPU 211. It has a configuration that can be suppressed. Therefore, for example, even if the cover tape 37 is broken and the take-up motor 65 is in a nearly no-load state, the rotation speed of the take-up motor 65 does not exceed the limit speed.

  And the process of above-mentioned S100-S130 becomes a structure performed repeatedly every fixed time. Therefore, while the output number N exceeds the reference value No (while the take-up motor 65 exceeds the speed limit), the state of No determination continues in S110, and the current value supplied to the take-up motor 65 is The state that can be suppressed continues.

  As a result, when the rotational speed of the take-up motor 65 decreases and the output number N falls below the reference value No (state where the rotational speed of the take-up motor 65 falls below the limit speed), the processing of S100 to S130 is performed next. Sometimes, as a result of the YES determination in S110, the control of the current value supplied to the take-up motor 65 returns to the normal control state described in the first embodiment.

  The speed limit on the take-up motor 65 side is preferably set to the speed on the feed motor 55 side. In the present embodiment, the speed limit is set somewhat faster than the target speed ωa of the feed motor 55. .

  Further, according to the present invention, “the CPU determines whether the rotational speed of the take-up motor exceeds the speed limit based on the information on the speed limit stored in the storage unit and the output of the detection unit, and The CPU 211 executes a command to give the second current control unit a current command for reducing or reducing the current value of the motor current supplied to the take-up motor on condition that the rotation speed of the take-up motor exceeds the speed limit. This is realized by the processing of S100, S110, and S120.

<Embodiment 3>
In the third embodiment, a plurality of patterns of speed characteristic data of the feed motor 55 are stored in the storage unit 223 of the feeder FD, and a desired speed characteristic is obtained by giving a selection signal from the main controller 300 to the feeder FD. Can be selected.

  Each of the speed characteristic patterns is a trapezoidal (symmetrical shape) characteristic having “acceleration”, “constant speed”, and “deceleration” in order. A trapezoidal characteristic indicated by a solid line in FIG. 19 is a speed characteristic reference pattern. The other patterns are set as a ratio with respect to the reference pattern such that the speed in the constant speed region is 50% of the speed of the reference pattern (time is twice) with respect to the reference pattern. Note that the time t required for acceleration and the time t required for deceleration both increase in inverse proportion to the speed in the constant speed range, and in the pattern in which the speed in the constant speed range is set to 50%, the time required for acceleration and deceleration are reduced. The time required is twice the time t required for acceleration and deceleration of the reference pattern, that is, 2t (indicated by a broken line in FIG. 19).

  Note that the speed characteristic pattern selection method is to select the high-speed transport speed characteristic (pattern) for the electronic component W with a stable component posture and few feed errors during the feed operation, and the component posture during the feed operation. For the electronic component W that is likely to become unstable and easily generate a feeding error, it is preferable to select a speed characteristic (pattern) for low-speed conveyance.

  In this way, an optimal feeding operation suitable for each electronic component W can be realized. For example, for an electronic component W whose posture is likely to be stable, tact can be shortened by sending it at a high speed, and for an electronic component W whose posture is likely to be unstable, a feeding error is less likely to occur. Of course, even for the same electronic component, it is of course possible to use different speed characteristics depending on the situation.

  As shown in FIG. 19, the configuration of the first embodiment is that the current value of the take-up motor 65 is controlled separately for each speed characteristic corresponding to “acceleration”, “constant speed”, and “deceleration”. There is no difference.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.

  (1) In the examples of the first to third embodiments, the second current value Ic and the third current value Id are set to the same current value, but the third current value Id is equal to or less than the second current value Ic. It may be sufficient and may be a value smaller than the second current value Ic.

  (2) In the first embodiment, the current command that the CPU 211 gives to the second current control unit 215 is set as shown in FIG. That is, the CPU 211 gives a current command for supplying a motor current at the first current value “Ia” to the second current control unit 215 in response to the “current command for acceleration”. In response to the “command”, a current command for supplying the motor current at the second current value “Ic” is given to the second current control unit 215, and in response to the “current command for deceleration”, the third current value “ The current command for supplying the motor current at “Id” is given to the second current control unit 215, and the motor current is supplied at the fourth current value “Ip” corresponding to the “current command for stop”. To the second current control unit 215.

  In the present invention, in response to the feed motor 55 being accelerated, the take-off motor 65 is supplied with a motor current having the first current value “Ia”, and the feed motor 55 is rotating at a constant speed. A motor current having a second current value “Ic” is supplied to the take-up motor 65, and a motor current having a third current value “Id” is supplied to the take-up motor 65 in response to the deceleration of the feed motor 55. For example, it is possible to discriminate between acceleration, constant speed and deceleration of the motor from the transition of the rotational speed ω of the feed motor 55, and then determine the current value of the motor current supplied to the feed motor 55. Also good. In this way, for example, as shown by the D part in FIG. 20, when the feed motor 55 rotates in a constant speed range due to some factor (disturbance), the acceleration range Similarly to the above, it is possible to set the current value to “Ia”.

The front view of the surface mounter applied to Embodiment 1 Plan view of surface mounter The figure which shows the support structure of the head unit Diagram showing mounting head support structure Perspective view of component supply tape Side view of tape feeder An enlarged side view of the front part of the tape feeder The perspective view which expanded the front part of a tape feeder Diagram showing the configuration of the feed motor (A) Diagram showing output waveform of Hall sensor (B) Diagram showing magnetic pole position θ of rotor 57 Diagram showing the configuration of the take-up motor Diagram showing the placement of Hall sensors Diagram showing detection signal of hall sensor Block diagram showing the electrical configuration of the feeder Graph showing the relationship between the feed motor speed characteristics and the current supplied to the take-up motor Chart showing the relationship between the feed motor speed characteristics and the current supplied to the take-up motor The flowchart figure which shows the processing flow which CPU performs The flowchart which shows the processing flow which CPU performs in Embodiment 2. FIG. In Embodiment 3, the graph which shows the relationship between the speed characteristic of a feed motor and the electric current value supplied to a take-off motor Figure showing a modification

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Base 30 ... Parts supply tape 31 ... Carrier tape 37 ... Cover tape 50 ... Sending device 51 ... Sprocket 55 ... Feed motor 59A, 59B ... Hall sensor 60 ... Picking device 65 ... Picking motor 69A, 69B, 69C ... Hall sensor (Corresponding to “detection means” of the present invention)
DESCRIPTION OF SYMBOLS 100 ... Mounting work apparatus 200 ... Controller 210 ... Motor control part 223 ... Memory | storage part FD ... Feeder (equivalent to the "component supply apparatus" of this invention)

Claims (5)

A component supply tape formed by adhering a cover tape to the upper surface of a carrier tape in which electronic components are intermittently stored along the longitudinal direction of the tape;
A sending device having a feed motor in a drive source and performing a feed operation for intermittently sending the electronic component to a component supply position by rotating the feed motor at a predetermined rotation angle;
A take-up motor having a take-up motor as a drive source and taking out the cover tape from the carrier tape in the course of the feeding operation to expose the electronic component at the component supply position;
In response to the feed motor being accelerated, the take-up motor is supplied with a motor current having a first current value, and in response to the feed motor being rotated at a constant speed, a second current is supplied to the take-up motor. A motor control unit that supplies a motor current of a value and supplies a motor current of a third current value to the take-up motor in response to the deceleration of the feed motor,
The first current value is set to be larger than the second current value, and the third current value is set to a value equal to or less than the second current value. The component supply device according to claim 1,
The motor controller is
A first current control unit for supplying a motor current to the feed motor;
A second current control unit for supplying a motor current to the take-up motor;
A CPU for giving a current command to the first current control unit and the second current control unit, and
The CPU has an acceleration region, a constant speed region, and a deceleration region in order by giving an acceleration current command, a constant speed current command, and a deceleration current command to the first current control unit in order. While rotating with trapezoidal speed characteristics,
The CPU gives a current command for supplying a motor current at the first current value to the second current control unit in response to an acceleration current command given to the first current control unit, and the first current control unit A current command for supplying a motor current at the second current value to the second current control unit in response to a constant speed current command given to the unit, and a deceleration current command given to the first current control unit The component supply device according to claim 1, wherein a current command for supplying a motor current at the third current value is provided to the second current control unit. The component supply device according to claim 2,
A storage unit storing information about the speed limit of the take-up motor;
Detecting means for performing output according to the rotation state of the take-up motor,
The CPU determines whether the rotation speed of the take-up motor exceeds the limit speed based on the information on the speed limit stored in the storage unit and the output of the detection means, and the rotation speed of the take-up motor is A component supply device that provides the second current control unit with a current command for reducing or reducing a current value of a motor current supplied to the take-up motor on condition that the speed limit is exceeded. The component supply device according to claim 2 or 3,
The CPU supplies a motor current having a fourth current value smaller than the third current value to the take-up motor from the time when the electronic component is sent to the component supply position until the next electronic component is sent out. A component supply device that supplies a current command to be supplied to the second current control unit. The base,
The component supply device according to any one of claims 1 to 4, wherein the component supply device is attached to the base.
A mounting head capable of sucking and holding an electronic component and performing a mounting operation for mounting the electronic component supplied through the component supply device on a substrate conveyed on the base;
A surface mounting machine comprising: a moving device that moves the mounting head on the base and performs the mounting operation using the mounting head.

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