JP4783255B2 - Component supply device and surface mounter - Google Patents

Description

  The present invention relates to a component supply device that supplies components such as an IC using a tape as a carrier, and a surface mounter on which the component supply device is mounted.

  Conventionally, a tape feeder is known as an example of an apparatus for supplying components to a surface mounter.

  The tape feeder feeds a tape containing a large number of components at regular intervals to the component supply position in front of the feeder while pulling it out from the reel, and takes out the component by the mounting head at this position. The tape as a carrier is composed of a carrier tape having a component storage section and a cover tape, and the tape feeder peels off the cover tape from the carrier tape in the middle of feeding the tape at the component supply position. The parts storage part is exposed. In this type of tape feeder, a take-up device is provided exclusively for the purpose of peeling the cover tape and taking it off after peeling (for example, Patent Document 1).

In this apparatus, the take-up device is constituted by a motor 3, a take-up roller 5, a pinch roller 6, and a container 7. As a result, when the motor 3 is driven, the take-up roller 5 rotates, and the cover tape 8 sandwiched between the rollers 5 and 6 is pulled backward to be taken up (see FIG. 14).
Japanese Patent No. 3637788

  In the above, since the cover tape 8 cannot be loosened only by setting the cover tape 8 between the rollers 5 and 6, prior to use, the cover tape 8 is somewhat removed from the container 7 at the rear of the apparatus. It is preferable to send it to the side and keep it stretched. Thus, by performing the feeding work prior to use, the cover tape 8 can be reliably peeled off after the start of use, and the peeled cover tape 8 is smoothly guided into the container 7. It becomes possible.

However, in order to perform the feeding operation, at least the motor 3 must be rotated. For this purpose, after the operation of setting the cover tape 8 between the rollers 5 and 6 is completed, It was necessary to give a rotation command to the motor 3 by pressing a switch or the like.
The present invention has been completed based on the above circumstances, and an object of the present invention is to provide a component supply device that saves labor during setting and has excellent usability.

As means for achieving the above object, the invention of claim 1 is operated by receiving the power of the first motor, and sends out a component supply tape containing a component intermittently toward a predetermined component supply position. Equipment,
A take-off device that operates by receiving the power of the second motor and takes out the cover tape adhered to the component supply tape;
And a control unit that controls the first motor and the second motor, and a cover that is attached to the component supply tape by the take-off device in the course of feeding the component supply tape by the delivery device. In the component supply apparatus that exposes the component at the component supply position by pulling off the tape while peeling,
A set operation detecting means for detecting a set operation for holding the cover tape in a state where the cover tape can be taken up in the take-up device;
The control means is characterized in that, on the condition that the set operation is detected by the set operation detection means, the second motor is driven to start taking out the cover tape by the take-up device.

  According to a second aspect of the present invention, in the first aspect, the set operation detecting means detects the set operation, whether the second motor has rotated in a direction opposite to the rotation in the tape take-off direction or not. It is characterized by the fact that it is performed based on this.

According to a third aspect of the present invention, the take-up device is between the second motor, the take-up roller that rotates by receiving the driving force of the second motor, and the take-up roller. It is composed of a pinch roller that sandwiches the cover tape,
When the cover tape is inserted between both rollers and the tape is pulled in a direction opposite to the take-off direction, the second motor rotates in the reverse direction, and the set operation detecting means detects the set operation. Has characteristics.

According to a fourth aspect of the present invention, in the second or third aspect of the present invention, the second motor includes a detection element that detects the rotational position of the rotor magnetic pole, and uses an output signal of the detection element. In the brushless DC motor that maintains the rotation of the rotor magnetic pole by controlling the supply timing of the motor current to the motor coil,
The set operation detecting means is characterized in that detection of whether or not the second motor has rotated in the reverse direction is performed based on an output signal of the detection element.

According to a fifth aspect of the present invention, in the control device according to any one of the first to fourth aspects, the control means controls the second motor at a constant torque by causing the motor current to follow a current command value. As well as the composition
The present invention is characterized in that an abnormality detection means for outputting an error is provided on condition that the rotation speed of the second motor exceeds a predetermined value.

  The invention of claim 6 is characterized in that parts are supplied by the parts supply device according to any one of claims 1 to 5.

<Invention of Claim 1>
According to the first aspect of the present invention, the second motor, and thus the take-up device is operated on condition that the set operation is detected. As a result, when the operator replaces the reel, if only the setting operation is performed prior to use, the second motor is driven and the take-up device automatically takes out the cover tape. Therefore, it is not necessary for the operator to perform an operation for starting the take-up device by himself / herself.

<Invention of Claim 2>
According to the invention of claim 2, the setting operation is detected by detecting the rotation direction of the second motor. Since the rotation direction of the motor can be detected relatively easily even if it is not a large-scale device, the size of the device is not increased while achieving automation.

<Invention of Claim 3>
According to the third aspect of the present invention, when the cover tape is inserted between the two rollers and the tape is pulled in the direction opposite to the take-up direction, the second motor rotates reversely, and the set operation detecting means sets the set operation. Is detected.

<Invention of Claim 4>
According to the invention of claim 4, in order to keep the rotation of the motor, the reverse rotation of the second motor is detected by using the output of the necessary detection element from the beginning. With such a configuration, the number of parts can be reduced as compared with the case where a dedicated sensor is installed for the purpose of detecting reverse rotation of the motor, so that the apparatus can be simplified.

<Invention of Claim 5>
According to the invention of claim 5, the control means is configured to perform constant torque control of the second motor. With this configuration, if the cover tape is broken and the motor is in an unloaded state, the rotational speed of the motor increases. Therefore, according to the present invention, an increase in the rotation speed is detected by comparing the rotation speed of the second motor with a predetermined value, and if an increase is detected, an error is output by the abnormality detection means. did. With such a configuration, an abnormality such as a break of the cover tape can be detected at an early stage, so that the reliability of the system is improved. In addition, since the breakage of the cover tape is detected based on the rotation speed of the second motor, a part dedicated to breakage detection is substantially unnecessary, and the number of parts does not increase.

<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS.
1. Overall Configuration FIG. 1 is a front view of a surface mounter, and FIG. 2 is a plan view of the surface mounter.
As shown in FIGS. 1 and 2, the surface mounter 10 includes a conveyor 20 that conveys a printed circuit board P, a component supply unit 30, a head unit 40, and the like.

  The component supply unit 30 is a supply location for components mounted on the printed circuit board P, and a plurality of component supply devices 50 to be described later are arranged in parallel there.

  The head unit 40 has a function of picking up components from the component supply unit 30 and moving them onto the printed circuit board P. The head unit 40 moves an area extending between the component supply unit 30 and the mounting position on the substrate P by a servo mechanism. It is possible.

  At the tip of each head 41, a suction nozzle for sucking components and mounting them on the printed circuit board P is provided. Each nozzle is supplied with negative pressure from a negative pressure means (not shown) at the time of component suction, and picks up the component by suction with the suction force of the negative pressure.

  Reference numeral 12 in FIG. 2 denotes a camera. The camera 12 has a function of picking up an image of a component sucked by the head 41 and detecting whether or not the suction posture of the component is good.

  In the surface mounter 10 configured as described above, first, the head unit 40 is moved above the tip portion on the conveyor 20 side in the component supply unit 30, and components are taken out from the component supply device 50. When the suction of the component by the head 41 is completed, the displacement of the suction position of the component is checked by the camera 12. Thereafter, the sucked parts are transferred by the head unit 40. During the transfer, the component adsorption position shift is corrected for each head 41, and when the predetermined component mounting position is reached, the head 41 is raised and lowered, and the component is mounted on the printed circuit board P along with this elevation. The

2. FIG. 3 is a perspective view of the component supply tape, and FIG. 4 is a front view showing a mounting state of the component supply device.

  The component supply tape 35 includes a carrier tape 36 and a cover tape 37 attached to the carrier tape 36. The carrier tape 36 has hollow component storage portions 36a opened upward at regular intervals, and components such as ICs are stored in the respective component storage portions 36a. Further, on one side of the carrier tape 36, engagement holes 36b penetrating vertically along the edge are provided at regular intervals. This component supply tape 35 is wound around and supported by a reel (not shown) at a rear position of a component supply device 50 described below.

  The component supply device 50 includes a delivery device 51, a take-up device 61, and a main body 50A to which these devices are fixed.

  The main body 50A has a long shape in the front-rear direction, and a container 75 made of a resin material is installed at the rear end. The main body 50 </ b> A and the container 75 are provided with a passage 71 through which the component supply tape 35 passes. The passage 71 extends straight and horizontally from the lower end of the rear end of the container 75 toward the front. Then, it continues to the main body 50A, and then takes an obliquely upward path toward the upper part of the main body 50A, and faces the upper surface of the main body 50A at the front part.

  A delivery device 51 described below is arranged on the front side (right side in FIG. 4) of the main body 50A with the passage 71 as a boundary, and a take-up device 61 is provided on the opposite side with the passage 71 as a boundary.

  The delivery device 51 includes a first motor (specifically, a brushless DC motor) 52, a gear 53, a gear 54, a gear 55A, and a sprocket 55 provided integrally with the gear 55A. The front side of the device (the right side in FIG. 4). Is installed. Then, the engagement hole 36 b of the carrier tape 36 is engaged with the tooth portion of the sprocket 55.

  Thus, when the first motor 52 is driven, the power is transmitted to the sprocket 55 through the gears 53, 54, and 55A. As a result, the sprocket 55 rotates in the direction of the arrow A shown in FIG. 4 while pulling the locked carrier tape 36 horizontally, so that the component supply tape 35 is unwound from the reel and moved to the component supply position O in front of the apparatus. It is designed to send out.

  Also, reference numeral 59 shown in FIG. 4 is a tape holder. The tape holder 59 controls the protrusion of the parts by pressing the upper surface of the carrier tape 36 and maintains the engagement between the carrier tape 36 and the sprocket 55. . In addition, a slit (not shown) for folding the cover tape 37 backward is provided at a position near the rear end of the tape holder 59.

  The take-up device 61 includes a second motor (specifically, a brushless DC motor) 62, a gear 63, a gear 64A, and a take-up roller 64 and a pinch roller 65 provided integrally with the gear 64A. The pinch roller 65 is always pressed downward by an urging means (not shown) and is in close contact with the take-up roller 64.

  Therefore, when the second motor 62 is driven with the tip of the cover tape 37 held between the rollers 64 and 65, the power is transmitted through the gears 63 and 64A, and the take-up roller 64 rotates. As a result, the cover tape 37 sandwiched between the rollers 64 and 65 is peeled off from the carrier tape 36 and fed to the rear of the apparatus (leftward in FIG. 4). A receiving body 75 is installed on the rear side of the apparatus so as to receive the peeled cover tape 37.

  In this embodiment, the pinch roller 65 can move up and down, and the cover tape 37 can be set by lifting the pinch roller 65. That is, when the pinch roller 65 is lifted, a gap is formed between the pinch roller 65 and the take-up roller 64, and the cover tape 37 can be set to the take-up device 61 by inserting the tip of the cover tape 37 there.

  Reference numeral 77 shown in FIG. 4 is a control box. In the control box 77, a controller 80 that controls and controls the entire component supply device 50 is accommodated. A connector 78 is disposed in front of the control box 77.

  The above-described part supply device 50 includes a manual locking device 76, which can be fixed to the component supply unit 30 by operating it, and can be detached from the component supply unit 30 by releasing it. ing.

  In the fixed state, power is supplied and a control signal is transmitted from the mounting machine body through the connector 78. Accordingly, the controller 80 controls the electrical equipment such as the first and second motors 52 and 62 in cooperation with the control unit 11 of the surface mounter 10. Note that the configuration of the controller 80 is as shown in FIG.

  Next, a control system for controlling the second motor 62 that is a drive source of the take-up device 61 will be described with reference to FIG.

  Reference numeral 91 shown in FIG. 6 is a position detection sensor. The position detection sensor 91 detects the position of the rotor magnetic pole of the second motor 62, and the output position signal Sc is input to the controller 80. The controller 80 monitors the rotational direction (forward / reverse rotation) of the second motor 62 based on the position signal Sc and also monitors the rotational speed.

  Reference numeral 93 is a comparison circuit, reference numeral 95 is an amplifier circuit, reference numeral 97 is a current control circuit, and reference numeral 99 is a current sensor. A feedback control system is constructed by these circuits.

  More specifically, the current sensor 99 detects the motor current Im supplied to the second motor 62, and outputs a detection signal Sr having a level corresponding to the current value. Then, the output detection signal Sr is input to the comparison circuit 93.

  The comparison circuit 93 performs a process of comparing the current command value S given from the control device 81 with the detection signal Sr outputted from the current sensor 99, and outputs a control signal corresponding to the deviation. Then, the control signal output from the comparison circuit 93 is amplified by the amplifier G and then given to the current control circuit 97 as an operation amount.

  Thus, the current control circuit 97 performs control (PWM control or the like) so as to reduce the deviation between the current command value S given by the control device 81 and the motor current Im. As a result, the motor current Im of the second motor 62 is The current command value S is controlled, whereby the second motor 62 is driven with a constant torque.

  In addition, the thing of this embodiment does not employ | adopt the structure which provides dedicated sensors, such as a rotary encoder, as the position detection sensor 91, but the Hall element ("detection" of this invention) originally provided in the 2nd motor 62 is adopted. The position detection sensor 91 is used instead. The hall element is inside the motor and is used for detecting the rotational position of the rotor magnetic pole.

3. Assembly Work and Mounting Operation Next, a series of assembly work performed when the reel (not shown) around which the component supply tape 35 is wound is replaced will be described. In addition, there are (1) to (3) operations described below as manual assembly operations performed by an operator.

(1) Mounting operation of component supply tape 35 First, when the reel is replaced, it is necessary to set the component supply tape 35 on the main body 50A of the component supply device 50. For this purpose, the part supply tape 35 is pulled out from a reel (not shown) to a certain length. Then, as shown in FIG. 7, the pulled-out tip is drawn upward from the front portion of the main body 50A through the passage 71 provided in the main body 50A. In this state, the cover tape 37 is pulled away from the component supply tape 35, and the carrier tape 36 is locked to the teeth of the sprocket 55. Thereafter, the tape holder 59 is attached. Thereby, the mounting operation of the component supply tape 35 to the main body 50A is completed.

(2) Work for fixing the component supply device 50 to the component supply unit 30 Following the mounting operation of the component supply tape 35, this time, the component supply device 50 is moved to the component supply unit 30, and as shown in FIG. Install in the specified mounting position. Then, the manual locking device 76 is operated to fix the component supply device 50 to the component supply unit 30. Thus, the fixing operation of the component supply device 50 is completed.

  Further, by this fixing operation, the connector 78 is electrically connected to the connector on the mounting machine side. As a result, power is supplied to each electrical equipment of the component supply device 50 through the power supply circuit 110 of the surface mounter 10, and a control signal is input from the control unit 11 of the surface mounter 10 to the controller 80, and the controller 80 is activated. The

(3) Cover tape 37 set work (work corresponding to the “set operation” of the present invention)
When the fixing work is completed, it is next necessary to set the cover tape 37 on the take-up device 61. The setting operation is performed by lifting the pinch roller 65 so that the pinch roller 65 is lifted from the take-up roller 64 and inserting the tip of the cover tape 37 into the gap formed between the rollers 64 and 65. Thereafter, the tip of the cover tape 37 is held between the rollers 64 and 65 by returning the pinch roller 65 to the original position, as shown in FIG. Thus, the setting operation is completed, and the cover tape 37 can be wound up by the take-up device 61.

  Then, from this state, when the cover tape 37 is pulled to the front side of the apparatus (in the direction of the arrow B shown in FIG. 9), as will be described below, the take-up device 61 automatically starts to operate, and the cover tape 37 Take the slack of.

(4) Cover tape slack removal work by the take-up device The take-up device 61 is controlled by the controller 80 in conjunction with the controller 11 of the surface mounter 10, and when the control is started, S10 shown in FIG. The process of S20 is executed, and the control state for monitoring whether or not the second motor 62 is in the reverse rotation state is entered. Specifically, in S10, the position of the rotor magnetic pole of the second motor 62 is detected based on the position signal Sc output from the position detection sensor 91.

  In S20, the controller 80 determines whether or not the second motor 62 is rotating in the reverse direction based on the position detection result. Both the processes of S10 and S20 are repeatedly executed until the reverse rotation of the second motor 62 is detected.

  Here, it is the start time of the control of the take-up device 61 by the controller 80, which is started simultaneously with the activation of the controller 80. Accordingly, the control of the take-up device 61 is started when the operation of fixing the component supply device 50 (2) to the component supply unit 30 is completed.

  From the above, before the operator completes the set work, the controller 80 has started the processes of S10 and S20 described above (in a control state in which reverse rotation is detected).

  Therefore, after the setting work of the cover tape 37 in (3) is completed, when the operator pulls the cover tape 37 to the front side of the apparatus, the pulling force is applied to the take-up roller 64, the gear 64A, and the gear 63. The second motor 62 rotates in the reverse direction (rotates in the direction opposite to the take-up direction).

  Then, the reverse rotation of the motor is immediately detected by the controller 80. As a result, Yes is determined in the determination process of S20, and thereby the process of S30 is executed.

  In S <b> 30, a rotation command is given from the controller 80 to the control device 81 that controls the motor, whereby the second motor 62 starts rotating in the forward rotation direction. Thus, the detection of reverse rotation is a trigger that causes the second motor 62 to start normal rotation driving.

  The processing function fulfilled by the “set operation detecting means” of the present invention by the rotor magnetic pole position detection processing in S10, the determination processing in S20, and the processing in S30 for starting the forward rotation of the second motor 62 based on the determination result. In addition, "a processing function performed by the control means" is realized.

  When the take-up device 61 is actuated by starting the driving of the second motor 62, both rollers 64 and 65 rotate, and the cover tape 37 is sent to the rear of the device (left side in FIG. 9) by the frictional force. As a result, the slack is removed, and the cover tape 37 is eventually stretched. At the same time, the second motor 62 is locked and stopped. Even in this state, the second motor 62 continues to be subjected to constant torque control. As a result, a tension equal to the set torque of the second motor 62 is applied to the cover tape 37.

  Thus, the assembly work of the first component supply device 50 is completed. After that, the remaining component supply device 50 may be assembled according to the same work procedure as described above.

  Then, when all the component supply devices 50 subject to reel replacement have been installed in the component supply unit 30 and the slack of the cover tape 37 of each component supply device 50 can be removed, For each component supply device 50, by performing the operation of sending the first component to the component supply position O, the surface mounting operation can be started.

  In order to send the first component to the component supply position O, it is necessary to operate the take-up device 61. When the take-up device 61 is actuated, the component supply tape 35 is sent. As a result, the cover tape 37 is peeled off from the carrier tape 36. However, the motor current is supplied to the second motor 62. Torque has been generated.

  Accordingly, when the cover tape 37 becomes slack, the second motor 62 automatically rotates and feeds the cover tape 37 to the rear of the apparatus by friction between the rollers 64 and 65. As a result, when the first component reaches the component supply position O and the take-up device 61 stops, the cover tape 37 is pulled toward the rear of the device (a state in which the cover tape 37 is stretched without slack).

  Now, in order to start the surface mounting, a predetermined operation (for example, pressing an unillustrated start switch provided in the surface mounting machine 10) should be performed. Surface mounting of components on the printed circuit board P to be flowed is started.

  When the predetermined operation described above is executed, the control unit 11 of the surface mounter 10 operates the servo mechanism according to the program, and moves the head unit 40 toward the component supply position O. When the head 40 reaches the component supply position O, the head 41 is moved up and down, and the first component is picked up (sucked) by the head 41.

  When the suction of the component by the head 41 is completed, the displacement of the suction position of the component is checked by the camera 12. Thereafter, the sucked parts are transferred by the head unit 40. During the transfer, the component adsorption position deviation is corrected for each head 41, and then the head 41 is moved up and down when the predetermined component mounting position is reached. It is mounted on the substrate P. Thus, the mounting of the first component is completed.

  On the other hand, the control unit 11 of the surface mounter 10 starts a process of transporting the second component to the component supply position O in parallel with the process of mounting the first component. That is, for the first component, when component pickup is completed, a component supply command is given to the controller 80 of the component supply apparatus 50. Then, the controller 80 of each component supply apparatus 50 that has received this drives the first motor 52, that is, operates the delivery apparatus 51. As a result, the delivery of the component supply tape 35 is started, and the second component is conveyed toward the component supply position O.

  At this time, the second motor 62 is in a stopped state, but since the motor current Im is supplied and torque is generated, the tension in the pulling direction is applied to the cover tape 37. Accordingly, when the delivery of the component supply tape 35 is started by the delivery device 51, the cover tape 37 is peeled off from the carrier tape 36 along with this.

  When the cover tape 37 becomes slack, the second motor 62 automatically rotates and takes up the slack. As a result, once delivery of the component supply tape 35 is started, the cover tape 37 is peeled off in the course of delivery, and only the carrier tape 36 is fed forward of the apparatus. Then, the peeled cover tape 37 is sent to the container 75 by the frictional force of both rollers 64 and 65.

  Then, when the delivery amount of the component supply tape 35 reaches a predetermined pitch, the operation of the first motor 52 and thus the delivery device 51 is stopped. Thus, the conveyance of the second component to the component supply position O is completed. As a result, the second component can be surface-mounted.

  After that, as with the first component, the second component at the component supply position O is taken out by the head unit 40, and then the second component picked up is mounted on the printed circuit board P. Is done.

  In parallel with the process of mounting the second component on the substrate P, the component supply apparatus 50 performs a process of transporting the third component to the component supply position O.

4). Effect According to the present embodiment, the second motor 62 is driven to rotate forward on the condition that reverse rotation of the second motor 62 is detected. With such a configuration, after replacing the reel, the operator needs to manually perform the setting operation for inserting the cover tape 37 between the rollers 64 and 65, and thereafter If the cover tape 37 is pulled lightly, the second motor 62, and consequently the take-up device 61, automatically operates to take the cover tape 37 loose. Therefore, a slack removal start operation (operation to start driving the second motor 62 by pressing a start switch not shown), which is normally performed in a normal state, is not necessary, and the time and effort can be saved.

  Moreover, the thing of this embodiment has detected the detection (detection of reverse rotation) of the rotation state of the 2nd motor 62 using the signal output from the Hall element incorporated in the motor from the first. With such a configuration, an increase in the number of parts can be suppressed, which contributes to cost reduction of the device.

<Embodiment 2>
Next, Embodiment 2 of the present invention will be described with reference to FIG.
In the second embodiment, the rotation speed of the second motor 62 is monitored to detect an abnormality such as breakage of the cover tape 37.

  More specifically, in the present embodiment, since the second motor 62 is controlled at a constant torque, the rotation speed of the second motor 62 is reduced when the motor becomes unloaded due to the breakage of the cover tape 37 or the like. Increased compared to normal usage.

  In consideration of this point, the upper limit of the rotational speed of the second motor 62 observed in a normal state is determined as a limit value (corresponding to the “predetermined value” of the present invention) in this embodiment. Then, by executing the process according to the control flow described below (the process of S50 to S80 is added to the control flow of the first embodiment), abnormality detection such as breakage is detected based on the limit value. If an abnormality is detected, error processing is performed.

  First, when the second motor 62 starts normal rotation driving in S30, the processes of S50 and S60 are subsequently executed. In the processes of S50 and S60, the rotational speed of the second motor 62 is detected based on the position signal Sc output from the position detection sensor 91, and the detected rotational speed is set to a limit value (the “predetermined value” in the present invention). It is determined by the controller 80 whether or not it exceeds the equivalent).

  If there is an abnormality such as breakage of the cover tape 37, the rotational speed increases and exceeds the limit value. As a result, No is determined when the determination process of S60 is performed, and a process corresponding to the abnormal state is taken in subsequent processes.

  First, in S70, a process for stopping the second motor 62 is executed by the controller 80. After that, in S80, for example, a process for lighting a warning light (not shown) as an error process for notifying abnormality is performed by the surface mounter 10. This is executed by the controller 11 and the controller 80.

  With such a configuration, if there is an abnormality such as breakage of the cover tape 37, it can be detected at an early stage, so that the reliability of the system is improved. Also, with the configuration of the present embodiment, it is possible to detect an abnormality without newly providing a dedicated component, so there is an advantage in cost compared to a configuration in which an abnormality is detected by providing a dedicated component. .

  The processing function performed by the “abnormality detection means” of the present invention is realized by the processing of S50 to S80 executed by the controller 80 and the control unit 11 of the surface mounter 10.

<Embodiment 3>
Next, Embodiment 3 of the present invention will be described with reference to FIG.
In the first embodiment, the completion of the setting operation of the cover tape 37 with respect to the delivery device 51 is detected by the reverse rotation of the second motor 62. Then, the second motor 62 was driven on the condition that the reverse rotation was detected.

  In the third embodiment, the completion of the setting operation of the cover tape 37 with respect to the delivery device 51 is detected by the displacement operation of the pinch roller 65.

  Specifically, in the present embodiment, a limit switch 120 is provided above the pinch roller 65 as shown in FIG.

  When an operator lifts the pinch roller 65 to set the cover tape 37 on the delivery device 51, the upper part of the lifted pinch roller 65 contacts the limit switch 120. As a result, the detection signal Se is output from the limit switch 120 to the controller 80. Thus, a rotation command is given by the controller 80, and the second motor 62 starts normal rotation driving.

  Even in such a configuration, the same effect as in the first embodiment, that is, the operator needs to manually perform the setting operation itself for inserting the cover tape 37 between the rollers 64 and 65. There is a certain thing, and the 2nd motor 62 starts a normal rotation drive automatically, and the slack of the cover tape 37 is taken. Therefore, it is possible to save the trouble of performing an operation for removing slack.

  In this example, the limit switch 120 realizes the function of the “set operation detecting means” of the present invention.

<Embodiment 4>
In the fourth embodiment, the set torque of the second motor 62 is switched according to the situation. The specific setting of the torque is as shown in FIG. 13, and immediately after the second motor 62 starts normal rotation, the maximum torque is set. Thereafter, the torque is repeated to a middle level during the rotation of the motor, and is switched to a small torque when stopped. The torque switching is realized by changing the current command value S applied from the control device 81 to the comparison circuit 93 (see FIG. 6).

  In this way, the breakage of the cover tape 37 can be suppressed by switching the set torque of the motor according to the situation. Specifically, when starting the motor, a relatively large torque is required, but once the motor starts rotating, it is sufficient that a certain amount of tension is applied to the cover tape 37.

  If the set torque of the second motor 62 is kept as large as that at the start, especially when the motor is stopped, an excessive force is applied to the cover tape 37, and there is a risk of breakage. . In this regard, with the above-described configuration, since the motor is switched to a small torque after the start of the motor, such breakage can be avoided in advance. Moreover, if it is the said structure, the consumption current of a motor can be suppressed and this point is also effective.

  The specific torque switching timing needs to be determined according to the rotation state of the motor. For this purpose, the rotational speed of the motor is detected based on the position signal Sc output from the position detection sensor 91. You just have to decide.

<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, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.

  (1) In the present embodiment, as an example of detecting the set operation, the reverse rotation of the second motor 62 is illustrated in the first embodiment, and the displacement operation of the pinch roller 65 is illustrated in the third embodiment, but the set operation is detected. Anything can be applied. For example, a sensor may be installed at the entrance of the container 75 to detect the entry / exit of the object (cover tape 37) with respect to the entrance.

1 is a front view illustrating a surface mounter according to a first embodiment of the invention. Plan view of surface mounter Perspective view of component supply tape Front view showing the mounting state of the parts supply device Block diagram showing the electrical configuration of the component feeder Block diagram showing the electrical configuration of the control system that controls the motor The figure which shows the assembly procedure of the parts supply tape Similarly, the figure which shows the assembly procedure of the component supply tape Figure showing the cover tape retracting operation The flowchart figure which shows the control procedure of a components supply apparatus The flowchart figure which shows the control procedure of the components supply apparatus applied to Embodiment 2. The block diagram which shows the electric constitution of the control system applied to Embodiment 3 which controls a motor Timing chart showing torque setting / switching applied to the fourth embodiment Figure showing a conventional example

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Surface mounter 30 ... Component supply part 50 ... Component supply device 51 ... Sending device 52 ... First motor 61 ... Picking device 62 ... Second motor 64 ... Picking roller 65 ... Pinch roller 80 ... Controller ("control" of this invention Equivalent to "means", "set motion detection means", "abnormality detection means")
91... Position detection sensor (corresponding to “set operation detection means” of the present invention)

Claims (6)

A delivery device that operates by receiving the power of the first motor and intermittently feeds a component supply tape containing the components toward a predetermined component supply position;
A take-off device that operates by receiving the power of the second motor and takes out the cover tape adhered to the component supply tape;
And a control unit that controls the first motor and the second motor, and a cover that is attached to the component supply tape by the take-off device in the course of feeding the component supply tape by the delivery device. In the component supply apparatus that exposes the component at the component supply position by pulling off the tape while peeling,
A set operation detecting means for detecting a set operation for holding the cover tape in a state where the cover tape can be taken up in the take-up device;
The control means drives the second motor to start taking out the cover tape by the take-up device on condition that the set action is detected by the set action detecting means. apparatus. 2. The set operation detection unit according to claim 1, wherein the set operation detection unit detects the set operation based on whether or not the second motor rotates in a direction opposite to the rotation in the tape take-up direction. Parts supply device. The take-up device includes the second motor, a take-up roller that rotates by receiving the driving force of the second motor, and a pinch roller that sandwiches the cover tape between the take-up roller,
When the cover tape is inserted between both rollers and the tape is pulled in a direction opposite to the take-off direction, the second motor rotates reversely, and the set operation detecting means detects the set operation. The component supply apparatus according to claim 2, wherein the apparatus is a component supply apparatus. The second motor incorporates a detection element for detecting the rotational position of the rotor magnetic pole, and controls the rotation timing of the rotor magnetic pole by controlling the supply timing of the motor current to the motor coil using the output signal of the detection element. In what is a brushless DC motor to sustain,
4. The component according to claim 2, wherein the set operation detection unit detects whether or not the second motor has rotated in the reverse direction based on an output signal of the detection element. 5. Feeding device. The control means is configured to perform constant torque control of the second motor by causing the motor current to follow the current command value, and
5. The component supply device according to claim 1, further comprising an abnormality detection unit configured to output an error on condition that a rotation speed of the second motor exceeds a predetermined value. 6. A surface mounter that supplies components by the component supply device according to any one of claims 1 to 5.

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