JP2022042836A - Component supply feeder and component mounting machine including the same - Google Patents

Abstract

To properly perform the operation of returning a tape in a direction opposite to a direction in which the tape is supplied.SOLUTION: A component supply feeder includes a tape, a component feeding mechanism, a cover tape feeding mechanism, a tensioner that applies tension to a cover tape, a detection mechanism that detects the presence or absence of tension applied to the peeled cover tape, and a control unit. In a case in which the component feeding mechanism moves the tape in a direction opposite to a direction in which an electronic component is fed to the supply position, when the detection mechanism detects that the cover tape is under tension, the control unit controls the cover tape feeding mechanism such that the cover tape moves in a direction opposite to a direction in which the cover tape is fed to a disposal position, and when the detection mechanism does not detect that the cover tape is under tension, the control unit does not control the cover tape feeding mechanism to move the cover tape in the opposite direction, and controls the component feeding mechanism such that the tape moves in the opposite direction.SELECTED DRAWING: Figure 6

Description

The techniques disclosed herein relate to component supply feeders and component mounters comprising them.

In a component mounting machine that mounts electronic components on a board, a component supply feeder is detachably attached to the component mounting machine main body, and electronic components are supplied from the component supply feeder. As the component supply feeder, for example, a tape-type component supply feeder in which a plurality of electronic components are housed between a bottom tape and a cover tape is known. In the tape-type component supply feeder, when the electronic component is sent to the supply position, the cover tape is peeled from the bottom tape at the peeling position in front of the supply position, and the electronic component is exposed at the supply position. The peeled cover tape is fed from the peeled position to the disposal position by the cover tape feeding mechanism. For example, in the component supply feeder of Patent Document 1, in order to properly feed the cover tape from the peeling position to the disposal position, the cover tape feeding mechanism disposes of the cover tape in a state where tension is applied to the peeled cover tape. Send to. Further, the component supply feeder of Patent Document 1 is provided with a detection mechanism for detecting whether or not tension is applied to the peeled cover tape.

Japanese Unexamined Patent Publication No. 2017-92271

In a tape-type component feeder, the tape (ie, the bottom tape and cover tape containing the electronic components) may be fed in the direction opposite to the direction in which the electronic components are fed to the supply position. Examples of the case where the tape is fed in the opposite direction include a case where the tape is fed too much when being fed to the supply position, a case where the tape is removed from the component supply feeder, and the like. Hereinafter, the operation for feeding the tape in the opposite direction in this way is also referred to as a tape return operation. When the tape return operation is executed, the peeled cover tape is also returned in the direction toward the peeling position. At this time, in the component supply feeder as disclosed in Patent Document 1, since tension is applied to the peeled cover tape, the cover tape may be cut if the tape return operation is executed as it is. Therefore, when returning the tape, the cover tape is loosened until tension is not applied to the cover tape, and then the tape is fed in the opposite direction. On the other hand, when the cover tape is not tensioned (for example, when the cover tape is cut), it is not necessary to loosen the cover tape when performing the tape return operation. However, in the prior art, when performing the tape return operation, the tape is fed in the opposite direction after performing the operation to loosen the cover tape, regardless of whether the cover tape is under tension or not. Was there. Therefore, it may take unnecessary time to execute the tape return operation.

The present specification discloses a technique for appropriately performing an operation of returning a tape in a direction opposite to the direction in which the tape is supplied in a tape-type component supply feeder.

The component supply feeder disclosed in the present specification is a tape-type component supply feeder that is detachably attached to a component mounting machine main body that mounts electronic components on a substrate and supplies electronic components to the component mounting machine main body. The component supply feeder is a tape that accommodates electronic components between the bottom tape and the cover tape attached to the bottom tape, a component feed mechanism that sends the electronic components contained in the tape to the supply position, and peeling from the tape. A cover tape feeding mechanism that feeds the removed cover tape from the peeling position to the disposal position, and a first direction provided between the component feeding mechanism and the cover tape feeding mechanism, in which the component feeding mechanism sends electronic components to the supply position. When the tape is moved and the cover tape feed mechanism moves the cover tape in the third direction, which is the direction in which the cover tape is sent to the disposal position, the tensioner that applies tension to the cover tape and the presence or absence of tension applied to the peeled cover tape. It is a detection mechanism that detects, and a control unit that controls the component feed mechanism and the cover tape feed mechanism. When the mechanism detects that the cover tape is under tension, it controls the cover tape feed mechanism so that the cover tape moves in the fourth direction opposite to the third direction, and the tape is in the second direction. Control the component feed mechanism to move in the direction, and control the cover tape feed mechanism to move the cover tape in the fourth direction when the detection mechanism does not detect that tension is applied to the cover tape. It is provided with a control unit that controls the component feeding mechanism so that the tape moves in the second direction.

In the above-mentioned component supply feeder, when tension is applied to the cover tape, when the tape is fed in the second direction, the cover tape feeding mechanism first executes an operation of feeding the cover tape in the fourth direction. As a result, the tension applied to the cover tape is relaxed, and it is possible to prevent the cover tape from being cut when the tape is fed in the second direction. On the other hand, when tension is not applied to the cover tape, the cover tape feed mechanism feeds the tape in the second direction without executing the operation of feeding the cover tape in the fourth direction. As a result, when tension is not applied to the cover tape, for example, when the cover tape has already been cut, the tape is fed in the second direction without performing the operation of loosening the cover tape, and the tape is taped. The time required for the operation of sending the second direction can be shortened. In this way, the operation of feeding the tape in the second direction can be appropriately executed according to the state of the cover tape.

The component mounting machine disclosed in the present specification includes the above-mentioned component supply feeder and a component mounting machine main body to which the component supply feeder is detachably attached and electronic components supplied from the component supply feeder are mounted on a substrate. ..

The component mounting machine described above includes the component supply feeder described above. Therefore, the same operation and effect as the above-mentioned component supply feeder can be obtained.

The figure which shows the schematic structure of the component mounting machine. FIG. 1 is a cross-sectional view taken along the line II-II of FIG. It is a figure which shows the schematic structure of the component supply feeder, and shows the state which tension is applied to the peeled cover tape. It is a figure which shows the schematic structure of the component supply feeder, and shows the state which tension is not applied to the peeled cover tape. The block diagram which shows the control system of a component supply feeder. A flowchart showing an example of the process of returning the tape in the reverse direction.

The main features of the examples described below are listed. The technical elements described below are independent technical elements and exhibit technical usefulness alone or in various combinations, and are limited to the combinations described in the claims at the time of filing. It's not a thing.

In the component supply feeder disclosed herein, the detection mechanism may be a sensor that is located between the peeled position and the discarded position and detects the presence or absence of tension on the peeled cover tape. With such a configuration, the tension applied to the cover tape can be suitably detected.

In the component supply feeder disclosed herein, the tensioner may be movable between a first position where tension is not applied to the cover tape and a second position where tension is applied to the cover tape. The sensor may detect whether the tensioner is in the first position. According to such a configuration, it can be suitably detected that the cover tape is not tensioned.

Hereinafter, the component mounting machine 10 according to the embodiment will be described. The component mounting machine 10 is a device for mounting the electronic component 4 on the circuit board 2. The component mounting machine 10 is also referred to as an electronic component mounting device or a chip mounter. Usually, the component mounting machine 10 is installed side by side with other board working machines such as a solder printing machine and a board inspection machine to form a series of mounting lines.

As shown in FIGS. 1 and 2, the component mounting machine 10 includes a plurality of component supply feeders 30, a feeder holding unit 14, a mounting head 16, a head moving device 18, a board conveyor 20, a touch panel 24, and the like. A control device 26 is provided. Each component supply feeder 30 accommodates a plurality of electronic components 4. The component supply feeder 30 is detachably attached to the feeder holding portion 14 and supplies the electronic component 4 to the mounting head 16. The specific configuration of the component supply feeder 30 will be described in detail later.

The feeder holding portion 14 includes a plurality of slots, and the component supply feeder 30 can be detachably installed in each of the plurality of slots. The feeder holding portion 14 may be fixed to the component mounting machine 10 or may be detachable from the component mounting machine 10. The mounting head 16 holds one or a plurality of suction nozzles 6 detachably, picks up the electronic component 4 supplied by the component supply feeder 30 using the suction nozzle 6, and mounts the electronic component 4 on the circuit board 2. .. At this time, the head moving device 18 moves the mounting head 16 with respect to the component supply feeder 30 and the circuit board 2. As a result, the electronic component 4 is picked up from the specific component supply feeder 30 among the plurality of component supply feeders 30, and the electronic component 4 is mounted at a predetermined position on the circuit board 2. The board conveyor 20 carries in, supports, and carries out the circuit board 2. The touch panel 24 is a display device that provides various information of the component mounting machine 10 to the operator, and is an input device that receives instructions and information from the operator. The control device 26 is configured by using a computer including a CPU and a storage device. The control device 26 controls the operation of each part of the component mounting machine 10 based on the production program transmitted from the management device 8.

The configuration of the component supply feeder 30 will be described with reference to FIGS. 3 to 5. As shown in FIGS. 3 to 5, the component supply feeder 30 includes a housing 32, a reel 34, a reel support portion 36, a tape feeding mechanism 38, a roller 52, a tensioner 54, and a cover tape feeding mechanism 56. , The sensor 58 and the control device 60.

A long tape 40 for accommodating a plurality of electronic components 4 at regular intervals is wound around the reel 34. The tape 40 has a base tape 42 and a cover tape 44, and an electronic component 4 is housed between the base tape 42 and the cover tape 44. An opening 34a is provided in the center of the reel 34, and the opening 34a is made larger than the radial dimension of the reel support portion 36 described later. The reel 34 is installed in the component supply feeder 30 by inserting and engaging the reel support portion 36 with the opening portion 34a. The reel 34 is replaceable with respect to the component supply feeder 30.

The reel support portion 36 has a cylindrical shape, and one end of the reel support portion 36 is attached to the housing 32. The reel support portion 36 rotatably supports the reel 34.

The tape delivery mechanism 38 sends out a fixed amount of tape 40 wound around the reel 34 supported by the reel support portion 36 from the reel 34. The amount of tape 40 delivered by the tape delivery mechanism 38 is set according to the distance between the electronic components 4 housed in the tape 40. The cover tape 44 of the delivered tape 40 is peeled off at the position B on the reel 34 side from the predetermined pick-up position (that is, the supply position) A (see FIG. 1) (hereinafter, the position B is also referred to as the peeling position B). .. When the cover tape 44 is peeled off, the electronic component 4 housed in the tape 40 is exposed and picked up by the mounting head 16 at the pick-up position A. When the tape 40 is sent out, the tape delivery mechanism 38 moves the tape 40 from the reel 34 in the direction toward the pick-up position A (that is, in the + Y direction). Further, the tape delivery mechanism 38 can also pick up the tape 40 and return it in the direction from the pick-up position A toward the reel 34 (that is, in the −Y direction). Hereinafter, the direction in which the tape delivery mechanism 38 sends out the tape 40 (+ Y direction) is referred to as "forward direction" or "first direction", and the direction in which the tape delivery mechanism 38 returns the tape 40 (-Y direction) is "reverse direction". Or "second direction". The tape delivery mechanism 38 is, for example, when the electronic component 4 housed in the tape 40 is fed forward from the pick-up position A when the tape 40 is moved in the forward direction, or when the reel 34 is sent to the component supply feeder. When removing from 30, the tape 40 may be moved in the opposite direction. The tape feeding mechanism 38 is an example of a “parts feeding mechanism”.

The cover tape 44 is peeled at the peeling position B above the tape 40 and in the direction opposite to the first direction in which the tape 40 is sent out (in the −Y direction in FIGS. 3 and 4). The cover tape 44 peeled off from the base tape 42 is sent to the cover tape feeding mechanism 56 via the roller 52 and the tensioner 54.

The cover tape feeding mechanism 56 feeds the cover tape 44 peeled from the base tape 42 at the peeling position B to the disposal position C. The cover tape feed mechanism 56 is, for example, a take-up gear connected to a motor (not shown), and by rotating in a direction toward the lower disposal position C (direction of arrow D in FIGS. 3 and 4), the cover tape feed mechanism 56 is a cover tape. 44 is sent from the peeling position B to the disposal position C. Hereinafter, the direction in which the cover tape 44 moves toward the disposal position C by the cover tape feed mechanism 56 is referred to as a "forward direction" or a "third direction", and the drive of the cover tape feed mechanism 56 at this time is referred to as a "cover". The tape feed mechanism 56 is driven in the forward direction. " Further, the cover tape feeding mechanism 56 can also rotate in a direction toward the upper tensioner 54 (direction of arrow E in FIGS. 3 and 4), and by rotating in this direction, the cover tape 44 can be rotated. Can be returned in the direction of the peeling position B. Hereinafter, the direction in which the cover tape 44 moves toward the peeling position B by the cover tape feeding mechanism 56 is referred to as a "reverse direction" or a "fourth direction", and the drive of the cover tape feeding mechanism 56 at this time is referred to as a "cover". The tape feed mechanism 56 is driven in the opposite direction. "

The tensioner 54 is arranged between the roller 52 and the cover tape feeding mechanism 56. The tensioner 54 is configured to be movable from the first position shown in FIG. 4 to the second position shown in FIG. 3 on the cover tape feeding mechanism 56 side (-Z side in FIG. 3) from the first position. Specifically, the tensioner 54 is urged from the second position toward the first position by an urging means (spring) (not shown). When the cover tape 44 and the tensioner 54 are not tensioned, the tensioner 54 is located at the first position shown in FIG. 4 due to the urging force from the urging means. When tension is applied to the cover tape 44 by rotating the cover tape feed mechanism 56 (that is, the take-up gear) in the direction of the arrow D, the tensioner 54 overcomes the urging force of the urging means by the external force from the cover tape 44. , Move from the first position shown in FIG. 4 to the second position shown in FIG. By applying tension to the cover tape 44, the cover tape 44 can be appropriately fed to the disposal position C without loosening the cover tape 44.

The sensor 58 detects whether or not tension is applied to the cover tape 44. The sensor 58 is an optical sensor having a light emitting unit and a light receiving unit, and detects whether or not the tensioner 54 is located at the first position. Specifically, the light receiving portion of the sensor 58 is arranged at a position where the optical path of the light from the light emitting portion is blocked by the tensioner 54 when the tensioner 54 is located at the first position. When the tensioner 54 deviates from the first position (that is, when the tensioner 54 moves from the first position to the second position), the light receiving portion of the sensor 58 receives light, and the tensioner 54 is not located in the first position. Is detected. As a result, it is detected that tension is applied to the cover tape 44. Hereinafter, the state in which the sensor 58 receives light is referred to as "the sensor 58 (or its detection signal) is turned on", and the state in which the optical path of the sensor 58 is blocked is "the sensor 58 (or its detection signal) is turned off". May be called.

As shown in FIG. 5, the control device 60 is connected to the tape delivery mechanism 38 and the cover tape feed mechanism 56, and controls the tape feed mechanism 38 and the cover tape feed mechanism 56. Further, the control device 60 is connected to the sensor 58 and acquires a detection signal from the sensor 58.

A process of returning the tape 40 in the reverse direction (that is, the direction from the pick-up position A toward the reel 34) will be described with reference to FIG. As described above, the tape delivery mechanism 38 can not only feed the tape 40 from the reel 34 to the pick-up position A, but also return the tape 40 in the reverse direction. At this time, the peeled cover tape 44 is also returned in the reverse direction (that is, the direction from the disposal position C toward the peeling position B), but since the cover tape 44 is under tension, the tape 40 is returned in the reverse direction. Before, it is necessary to loosen the tension applied to the cover tape 44. On the other hand, if the cover tape 44 is cut when the tape 40 is returned in the reverse direction, it is not necessary to loosen the tension applied to the cover tape 44. In this embodiment, the process of returning the tape 40 in the reverse direction is executed according to the state of the cover tape 44.

As shown in FIG. 6, first, the control device 60 acquires a detection signal from the sensor 58 (S12). Next, the control device 60 determines whether or not the detection signal acquired in step S12 is ON (S14). When the detection signal is on (YES in step S14), it indicates that the tensioner 54 is not located at the first position. This means that tension is applied to the cover tape 44. Therefore, the control device 60 drives the cover tape feeding mechanism 56 in the reverse direction by a preset driving amount, and moves the cover tape 44 in the reverse direction by a preset moving amount (S16). For example, the control device 60 controls the cover tape feeding mechanism 56 so as to move the cover tape 44 in the opposite direction a plurality of times (preset number of times) by several mm (for example, by 4 mm). In step S16, the control device 60 drives the cover tape feeding mechanism 56 in the forward direction by several mm (for example, 4 mm), then moves the cover tape 44 by several mm a plurality of times in the opposite direction, and then moves the cover tape 44 in the opposite direction. The cover tape feed mechanism 56 may be driven in the forward direction by several mm (for example, 4 mm). In step S16, the tape 40 is not yet moved and is left stopped. Then, the tensioner 54 returns from the second position to the first position. As a result, the tension applied to the cover tape 44 is loosened.

Next, the control device 60 controls the tape delivery mechanism 38 to move the tape 40 in the opposite direction (S18). At this time, the control device 60 controls the tape delivery mechanism 38 to move the tape 40 in the reverse direction, and controls the cover tape feed mechanism 56 to move the cover tape 44 in the reverse direction as well. As a result, the tape 40 moves in the opposite direction. At this time, since tension is not applied to the peeled cover tape 44, it is possible to prevent the cover tape 44 from being cut when the tape 40 is moved in the opposite direction.

When the movement of the tape 40 in the reverse direction is completed, the control device 60 drives the cover tape feeding mechanism 56 in the forward direction to move the cover tape 44 in the forward direction (S20). As a result, tension is applied again to the peeled cover tape 44.

On the other hand, when the detection signal is off (NO in step S14), it indicates that the tensioner 54 is located at the first position. This means that tension is not applied to the cover tape 44. Further, since tension is normally applied to the peeled cover tape 44, it is assumed that the cover tape 44 is cut when the cover tape 44 is not tensioned. To. Therefore, the control device 60 controls the tape delivery mechanism 38 to move the tape 40 in the opposite direction (S22). As a result, the tape 40 moves in the opposite direction. In step S22, since the cover tape 44 is cut, only the tape 40 moves in the opposite direction. Further, since the cover tape 44 is cut, it is not necessary to execute the process of step S20 (the process of applying tension to the cover tape 44) that is executed when the sensor 58 is on.

When the detection signal is off (NO in step S14), the control device 60 moves the tape 40 in the opposite direction (S22), but in the control device 60, the cover tape 44 is cut before step S22. It may be determined whether or not it is. Specifically, when the detection signal is off (NO in step S14), the control device 60 may drive the cover tape feed mechanism 56 in the forward direction and acquire the detection signal from the sensor 58 again. As described above, when the detection signal is off in step S14, it is assumed that the cover tape 44 is in a cut state, but the cover tape 44 is set in a loose state for some reason. It is possible that it has been done. When the detection signal is turned off in step S14 because the cover tape 44 is cut, the tensioner 54 does not move even if the cover tape feeding mechanism 56 is driven in the forward direction, so that the detection signal is turned off again. Become. Therefore, if the detection signal is turned off again after driving the cover tape feed mechanism 56 in the forward direction, the process proceeds to step S22. On the other hand, when the detection signal is turned off in step S14 because the cover tape 44 is not cut and is loose, when the cover tape feeding mechanism 56 is driven in the forward direction, the tensioner 54 moves to cover the cover. Tension is applied to the tape 44. Therefore, the detection signal is turned on after the cover tape feed mechanism 56 is driven in the forward direction. In this case, the cover tape will be cut when the process proceeds to step S22. Therefore, the process does not proceed to step S22, and the processes of steps S16 to S20, which are the same processes as when the detection signal was turned on in step S14, are executed.

In this embodiment, how to execute the process of returning the tape 40 is selected based on whether or not the cover tape 44 is tensioned. When the sensor 58 is on, it is assumed that the cover tape 44 is attached to the cover tape feed mechanism 56. Therefore, the tape 40 is returned after the tension applied to the cover tape 44 is loosened. This makes it possible to prevent the cover tape 44 from breaking. On the other hand, when the sensor 58 is off, it is assumed that the cover tape 44 is cut. Therefore, the process of loosening the tension of the cover tape 44 and the process of reapplying the tension to the cover tape 44 are omitted. As a result, unnecessary processing can be omitted, and the time required for the processing for returning the tape 40 can be shortened.

The component mounting machine 10 of this embodiment is provided with an optical sensor 58, but is not limited to such a configuration. The sensor is not limited to the optical sensor as long as it can detect whether or not tension is applied to the peeled cover tape 44. Further, instead of the sensor, for example, by detecting the load applied to the cover tape feeding mechanism 56, it may be detected whether or not tension is applied to the peeled cover tape 44.

Although specific examples of the disclosed techniques have been described in detail in the present specification, these are merely examples and do not limit the scope of claims. The techniques described in the claims include various modifications and modifications of the specific examples exemplified above. Further, the technical elements described in the present specification or the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the techniques exemplified in the present specification or the drawings achieve a plurality of purposes at the same time, and achieving one of the purposes itself has technical usefulness.

2: Circuit board 4: Electronic component 8: Management device 10: Component mounting machine 14: Feeder holding unit 16: Mounting head 18: Head moving device 20: Board conveyor 24: Touch panel 26: Component mounting machine control device 30: Parts supply Feeder 32: Casing 34: Reel 38: Tape delivery mechanism 40: Tape 42: Bottom tape 44: Cover tape 54: Tensioner 56: Cover tape feed mechanism 58: Sensor 60: Parts supply feeder control device

Claims (5)

It is a tape-type component supply feeder that is detachably attached to the component mounting machine body that mounts electronic components on a board and supplies electronic components to the component mounting machine body.
A tape for accommodating the electronic component between the bottom tape and the cover tape attached to the bottom tape, and
A component feeding mechanism that sends the electronic components contained in the tape to the supply position, and
A cover tape feeding mechanism that feeds the cover tape peeled from the tape from the peeling position to the disposal position,
A detection mechanism that detects the presence or absence of tension applied to the peeled cover tape,
A control unit that controls the component feeding mechanism and the cover tape feeding mechanism, and the component feeding mechanism moves the tape in a second direction opposite to the first direction in which the electronic component is fed. If the detection mechanism does not detect that the cover tape is under tension, the cover tape moves in a fourth direction opposite to the third direction in which the cover tape is sent to the disposal position. A component supply feeder comprising a control unit that controls the component feed mechanism so that the tape moves in the second direction without controlling the cover tape feed mechanism. Provided between the component feeding mechanism and the cover tape feeding mechanism, the component feeding mechanism moves the tape in the first direction, and the cover tape feeding mechanism moves the cover tape in the third direction. Further equipped with a tensioner that applies tension to the cover tape when making it
When the component feeding mechanism moves the tape in the second direction, the control unit detects that the cover tape is under tension by the detection mechanism, and the cover tape is the first. The component supply feeder according to claim 1, wherein the cover tape feeding mechanism is controlled so as to move in four directions, and the component feeding mechanism is controlled so that the tape moves in the second direction. The component supply feeder according to claim 2, wherein the detection mechanism is a sensor arranged between the peeling position and the disposal position and detecting the presence or absence of tension applied to the peeled cover tape. The tensioner can be moved to a first position where tension is not applied to the cover tape and a second position where tension is applied to the cover tape.
The component supply feeder according to claim 3, wherein the sensor detects whether or not the tensioner is in the first position. The parts supply feeder according to any one of claims 1 to 4,
A component mounting machine including a component mounting machine main body to which the component supply feeder is detachably attached and an electronic component supplied from the component supply feeder is mounted on a board.

Images