JP6751855B2 - Tape feeder and component mounting device - Google Patents

Description

The present invention relates to a tape feeder that pitch-feeds a carrier tape containing components and a component mounting device in which the tape feeder is arranged.

A tape feeder is known as a component supply device in a component mounting device. This tape feeder supplies electronic components to the component suction position by the mounting head by pitch-feeding the carrier tape holding the electronic components. As a method of continuously supplying parts to the tape feeder without stopping the mounting operation, a new carrier tape (successor tape) is connected to the end of the previously mounted carrier tape (preceding tape). Tape splicing is used. In this tape splicing method, the operator needs to perform complicated tape splicing work every time the tape is replenished, and it has been desired to reduce these workloads. For this reason, as a new tape replenishment method, a tape feeder of a method in which a subsequent tape is set in a tape feeder without performing a tape splicing operation has been used (see, for example, Patent Document 1).

In the prior art shown in Patent Document 1, a component feed drive unit having a configuration in which a sprocket is driven by a drive motor to a tape insertion unit and a pickup unit that feeds carrier tape to a component pickup position provided at the rear end of the tape feeder. Is arranged, and the preceding tape and the succeeding tape are moved individually. With this configuration, tape supply is performed without joining the preceding tape and the succeeding tape.

Japanese Unexamined Patent Publication No. 2011-21169

However, in the prior art including the above-mentioned patent document example, there is a drawback that the following inconveniences occur when the carrier tape is continuously supplied to the tape feeder. That is, in the method without splicing, the preceding tape and the succeeding tape are not integrally connected. Therefore, when an external force acts on the succeeding tape due to an improper operation of the operator after setting the succeeding tape, the set succeeding tape is released. In some cases, the problem of falling off the sprocket occurred. When the tape is dropped off, if the tape feeder has a dropout detection function for notifying the tape dropout, the operator receives this notification and resets the dropped subsequent tape to the tape feeder.

However, the above-mentioned dropout detection function functions when power is supplied to the tape feeder, for example, when the tape feeder is set in the component mounting device or when it is connected to a power source in a predetermined work area. To do. For this reason, when the tape feeder is in a non-energized state in which power is not supplied, a work error occurs in which the operator mistakenly sets the dropped carrier tape on the tape feeder that should not be attached. In some cases. In the prior art, there is no measure to prevent such work mistakes due to carelessness of the operator, and erroneous parts are supplied, resulting in problems such as device stoppage and mounting mistakes.

Therefore, an object of the present invention is to provide a tape feeder and a component mounting device capable of preventing erroneous setting of a carrier tape on a tape feeder in a non-energized state.

The tape feeder of the present invention is a tape feeder including a gate provided at an insertion port into which a carrier tape containing parts is inserted, and a gate drive mechanism for driving the gate in the opening / closing direction. The drive mechanism electrically opens and closes the gate, and closes the gate when the tape feeder is in a non-energized state.

The component mounting device of the present invention is a component mounting device that takes out a component from a tape feeder arranged in a component supply unit by a component mounting mechanism and transfers and mounts the component on a board. The tape feeder is a carrier tape containing the component. A gate provided at the insertion port to be inserted and a gate drive mechanism for driving the gate in the opening / closing direction are provided. The gate drive mechanism electrically opens and closes the gate, and the tape feeder is in a non-energized state. In the case of, the gate is closed.

According to the present invention, it is possible to prevent erroneous setting of the carrier tape on the tape feeder in the non-energized state.

Top view of the component mounting device according to the embodiment of the present invention Partial sectional view of the component mounting apparatus according to the embodiment of the present invention. Structural explanatory view of the tape feeder of one embodiment of the present invention Functional explanatory view of a sprocket used for a tape feeding mechanism in a tape feeder according to an embodiment of the present invention. Structural explanatory view of the gate mechanism provided in the tape feeder according to the embodiment of the present invention. Functional explanatory view of the gate mechanism provided in the tape feeder according to the embodiment of the present invention. Partial sectional view of a gate mechanism provided in the tape feeder according to the embodiment of the present invention.

Next, an embodiment of the present invention will be described with reference to the drawings. First, the configuration of the component mounting device 1 for mounting components on the board will be described with reference to FIGS. 1 and 2. The component mounting device 1 has a function of mounting electronic components on a substrate, and FIG. 2 partially shows the AA cross section in FIG.

In FIG. 1, a substrate transport mechanism 2 is arranged in the center of the base 1a in the X direction (board transport direction). The board transport mechanism 2 transports the board 3 carried in from the upstream side, and positions and holds the board 3 on a mounting stage set for executing component mounting work. Parts supply units 4 are arranged on both sides of the board transfer mechanism 2, and a plurality of tape feeders 5 are mounted in parallel on each component supply unit 4. The tape feeder 5 is a component by the mounting head of the component mounting mechanism described below by pitch-feeding the carrier tape containing the components in the tape feeding direction, that is, in the direction from the outside of the component supply unit 4 toward the substrate transport mechanism 2. Supply parts to the suction position.

On the upper surface of the base 1a, a Y-axis moving beam 7 having a linear drive mechanism is arranged in the Y direction orthogonal to the X direction at one end in the X direction, and the Y-axis moving beam 7 has a Y-axis moving beam 7. Similarly, two X-axis moving beams 8 having a linear drive mechanism are coupled so as to be movable in the Y direction. A mounting head 9 is mounted on each of the two X-axis moving beams 8 so as to be movable in the X direction. The mounting head 9 is a multi-unit type head provided with a plurality of holding heads, and as shown in FIG. 2, a suction nozzle 9a that sucks and holds parts and can be individually moved up and down at the lower end of each holding head. Is installed.

By driving the Y-axis moving beam 7 and the X-axis moving beam 8, the mounting head 9 moves in the X direction and the Y direction. As a result, the two mounting heads 9 suck and hold the parts from the parts suction positions of the tape feeder 5 of the corresponding parts supply unit 4 by the suction nozzle 9a and take them out, and mount the board 3 positioned on the board transfer mechanism 2. Transfer and mount at the point. The Y-axis moving beam 7, the X-axis moving beam 8, and the mounting head 9 constitute a component mounting mechanism 10 for transferring and mounting the components on the substrate 3 by moving the mounting head 9 holding the components.

A component recognition camera 6 is arranged between the component supply unit 4 and the substrate transfer mechanism 2. When the mounting head 9 from which the component is taken out from the component supply unit 4 moves above the component recognition camera 6, the component recognition camera 6 images and recognizes the component held by the mounting head 9. The mounting head 9 is equipped with a substrate recognition camera 11 located on the lower surface side of the X-axis moving beam 8 and moving integrally with the mounting head 9.

When the mounting head 9 moves, the board recognition camera 11 moves above the board 3 positioned by the board transfer mechanism 2 and images and recognizes a mark (not shown) of the board 3. In the component mounting operation on the substrate 3 by the mounting head 9, the mounting position correction is performed in consideration of the component recognition result by the component recognition camera 6 and the board recognition result by the board recognition camera 11.

As shown in FIG. 2, a carriage 12 in which a plurality of tape feeders 5 are previously mounted on the feeder base 12a is set in the component supply unit 4. Feeder addresses for specifying the feeder positions to which the individual tape feeders 5 are mounted are set in the feeder base 12a, and in the component mounting work, each tape in the feeder base 12a is set via these feeder addresses. The parts housed in the carrier tape 14 set in the feeder 5 are specified.

The carriage 12 mounted on the parts supply unit 4 holds a supply reel 13 for storing the carrier tape 14 containing the parts in a wound state. The carrier tape 14 drawn from the supply reel 13 is pitch-fed by the tape feeder 5 to the component suction position by the suction nozzle 9a.

Next, the configuration and function of the tape feeder 5 will be described with reference to FIG. As shown in FIG. 3, the tape feeder 5 is configured to include a main body portion 5a and a mounting portion 5b projecting downward from the lower surface of the main body portion 5a. When the tape feeder 5 is mounted along the lower surface of the main body 5a along the feeder base 12a, the tape feeder 5 is fixedly mounted to the component supply section 4 and is built in to control the tape feed in the tape feeder 5. The feeder control unit 28 is electrically connected to the device control unit 29 of the component mounting device 1.

Inside the main body 5a, a tape traveling path 5c is provided to guide the carrier tape 14 that is pulled out from the supply reel 13 and taken into the main body 5a. The tape traveling path 5c is provided so as to communicate from the insertion port 5d, which is opened at the upstream end of the main body 5a in the tape feeding direction and into which the carrier tape 14 is inserted, to the component suction position where the component is taken out by the mounting head 9. ..

In the component mounting device 1 shown in the present embodiment, of the two carrier tapes 14 inserted from the insertion port 5d and sent back and forth, the components are taken out by the mounting head 9 already set in the tape feeder 5. The trailing end of the target carrier tape 14 (1) (hereinafter abbreviated as leading tape 14 (1)) and the carrier tape 14 (2) (hereinafter, succeeding tape) newly added and set when parts are cut off. A method is adopted in which the leading end portions of 14 (2) are sequentially inserted into the insertion slot 5d while being separated from each other without tape splicing. ..

The insertion port 5d is provided with a sprocket 21C and a gate mechanism 22 with which the subsequent tape 14 (2) additionally set is engaged. The sprocket 21C has a function of preventing the succeeding tape 14 (2) from falling off by restricting the tape feeding direction of the succeeding tape 14 (2). The gate mechanism 22 is located on the downstream side of the sprocket 21C, and moves the gate 34a (see FIG. 5) of the gate drive member 34 up and down with respect to the guide member 32 fixed to the frame portion 23 constituting the main body portion 5a. By allowing the carrier tape 14 to be inserted from the insertion port 5d, it has a function of allowing / prohibiting the entry of the carrier tape 14 into the tape traveling path 5c on the downstream side.

The first tape feeding mechanism 20A and the second tape feeding mechanism, which are tape feeding mechanisms for feeding the preceding tape 14 (1) and the succeeding tape 14 (2), are on the downstream side and the upstream side of the tape traveling path 5c. The mechanism 20B is arranged. The second tape feeding mechanism 20B provided on the upstream side has a function of continuously tape feeding the newly set succeeding tape 14 (2) from the insertion port 5d side to the first tape feeding mechanism 20A side. The sprocket 21B is rotationally driven by the second motor M2.

A tape pressing mechanism 24 and a tape stopper mechanism 25 are arranged on the lower side of the second tape feeding mechanism 20B. The trailing tape 14 (2) introduced into the insertion slot 5d via the sprocket 21C is pressed against the sprocket 21B by the tape pressing mechanism 24, whereby the trailing tape 14 (2) engages with the sprocket 21B. The tape can be fed by the second tape feed mechanism 20B. The tape stopper mechanism 25 has a function of temporarily stopping the leading end portion of the succeeding tape 14 (2) newly inserted with the preceding tape 14 (1) attached by the stopper member 25a. ..

The first tape feed mechanism 20A provided on the downstream side has a function of pitch-feeding the preceding tape 14 (1) to the component suction position by the mounting head 9 at a predetermined feed pitch, and feeds the sprocket 21A to the first component suction position. It is configured to be rotationally driven by the motor M1 of. Above the first tape feeding mechanism 20A, a pressing member 27 that presses the leading tape 14 (1) from above and exposes the parts stored in the leading tape 14 (1) is mounted, and is located at the component suction position. The pitch-fed component is picked up by vacuum suction by the suction nozzle 9a of the mounting head 9 through the component take-out opening 27a formed in the pressing member 27.

Here, the functions of these sprockets 21A, 21B, and 21C will be described with reference to FIG. As shown in FIG. 4A, a plurality of feed pins 21a are provided on the outer peripheral surfaces of the sprockets 21A, 21B, and 21C. The carrier tape 14 is formed with a component pocket 14a for accommodating a component to be supplied and a feed hole 14b into which a feed pin 21a is fitted at a predetermined pitch. A cover tape 14c for preventing the stored parts from falling off is attached to the area where the component pocket 14a is formed in the carrier tape 14. The carrier tape 14 is tape-fed by rotating the sprockets 21A and 21B with the feed pin 21a engaged with the feed hole 14b.

FIG. 4B shows the function of the sprocket 21C. The sprocket 21C has a built-in one-way clutch mechanism 30 that allows rotation only in the rotation direction (arrow a) corresponding to the tape feeding direction (arrow b) from the upstream side to the downstream side and prohibits rotation in the opposite direction. There is. As a result, when the succeeding tape 14 (2) is engaged with the sprocket 21C, the succeeding tape 14 (2) is allowed to move only in the normal tape feeding direction (arrow b), and moves in the opposite direction (arrow c). Is prohibited from moving. As a result, when the succeeding tape 14 (2) is newly set for parts replenishment, an external force in the pulling direction acts on the succeeding tape 14 (2) due to improper handling by an operator or the like. However, the subsequent tape 14 (2) is locked by the sprocket 21C to prevent it from falling off from the tape feeder 5.

4 (c) and 4 (1) show the function of the sprocket 21B in the second tape feeding mechanism 20B. As described above, the sprocket 21B is rotationally driven by the second motor M2 to continuously tape feed the succeeding tape 14 (2). In this drive system, the sprocket 21B is allowed to idle in the non-excited state in which the second motor M2 is not driven and controlled, and the subsequent tape 14 (2) engaged with the sprocket 21B moves. Is also acceptable.

The sprocket 21B has a built-in encoder 31 as a rotation detecting means, and when the subsequent tape 14 (2) moves in the downstream direction (arrow f) and the upstream side (arrow g), the sprocket 21B moves in the forward direction (arrow). d) It rotates in the opposite direction (arrow e), and the rotation detection signal corresponding to this rotation state is transmitted to the feeder control unit 28. In the present embodiment, the state of the succeeding tape 14 (2) in the second tape feed mechanism 20B is determined by monitoring the rotation detection signal transmitted to the feeder control unit 28.

First, when the rotation of the sprocket 21B in the positive direction (arrow d direction) is detected, it is determined that a new carrier tape 14 has been inserted, and the driving of the second motor M2 for tape feeding is started. As a result, the inserted carrier tape 14 is sent to the downstream side along the tape running path 5c. If the rotation of the sprocket 21B in the opposite direction (arrow e direction) is detected after the rotation in the forward direction (arrow d direction) is detected, the carrier tape 14 once inserted and engaged with the sprocket 21B causes some cause. It is determined that the tape has moved in the dropout direction (arrow g direction), and the tape dropout determination is made.

4 (c) and 4 (2) show the function of the sprocket 21A in the first tape feeding mechanism 20A. As described above, the sprocket 21A is intermittently driven by the first motor M1 to feed the preceding tape 14 (1) at a predetermined feed pitch (arrow h). As a result, the components housed in the component pocket 14a of the carrier tape 14 are supplied to the component suction position by the mounting head 9.

A first detection position P1 for detecting the carrier tape 14 is set on the upstream side of the first tape feeding mechanism 20A in the tape traveling path 5c, and is on the downstream side of the second tape feeding mechanism 20B. A second detection position P2 for detecting the carrier tape 14 is similarly set on the upstream side of the first detection position P1. The first sensor S1 and the second sensor S2 arranged at the first detection position P1 and the second detection position P2 are the carrier tapes 14 at the first detection position P1 and the second detection position P2, respectively. Detect the presence or absence. Further, the tape stopper mechanism 25 is provided with a third sensor S3 for detecting that the succeeding tape 14 (2) is in contact with the stopper member 25a.

The detection results of the first sensor S1, the second sensor S2, and the third sensor S3 are transmitted to the feeder control unit 28, and the feeder control unit 28 is based on these detection results and the rotation detection result by the encoder 31. The first tape feeding mechanism 20A and the second tape feeding mechanism 20B are controlled. As a result, the tape feed operation of the preceding tape 14 (1) and the succeeding tape 14 (2) in the tape feeder 5 is executed. Further, an operation / display panel 26 arranged on the upper surface on the upstream side of the tape feeder 5 is connected to the feeder control unit 28.

The operation / display panel 26 has an operation button for operating the tape feed operation and the tape return operation by the first tape feed mechanism 20A and the second tape feed mechanism 20B, and an operation for opening / closing the gate in the gate mechanism 22. Along with the buttons, various operation buttons such as an operation button for writing the component ID to the internal memory of the tape feeder 5 are provided. Further, the operation / display panel 26 is provided with a notification light for notifying a predetermined item set in advance.

Next, the configuration of the gate mechanism 22 will be described with reference to FIG. In FIG. 5A, the guide member 32 is fixed to the frame portion 23 by aligning the guide surface 32a with the tape feed height to which the carrier tape 14 inserted from the insertion port 5d is fed. The guide surface 32a of the guide member 32 is set in a shape capable of supporting and guiding the carrier tape 14 from the lower surface side (see FIG. 7). Further, a guide groove portion 32b is formed on the guide surface 32a so that the embossed tape having an embossed portion formed on the lower surface can be guided.

Above the guide member 32, a gate drive member 34 whose downstream end is pivotally supported by the shaft support portion 35 is arranged in a substantially horizontal posture. A gate 34a bent downward is provided at the upstream end of the gate drive member 34, and the gate drive member 34 rotates around the shaft support 35 so that the lower end of the gate 34a is a guide surface 32a. It can be attached and detached freely.

Above the gate drive member 34, a solenoid 33 excitedly driven by the feeder control unit 28 is arranged in a posture in which the drive shaft 33a is projected downward. The drive shaft 33a is coupled to the gate drive member 34 in a form capable of transmitting an upward driving force. Further, the gate drive member 34 is urged downward (arrow i) by the spring member 36 arranged on the upper surface. When the solenoid 33 is in the non-excited state, the driving force of the solenoid 33 does not act on the gate driving member 34. Therefore, the gate mechanism 22 is in a closed state in which the gate 34a is in contact with the guide surface 32a due to the urging force of the spring member 36. In this state, the carrier tape 14 inserted from the insertion port 5d is prohibited from entering the downstream side by the gate 34a in contact with the guide surface 32a.

FIG. 5B shows a state in which the solenoid 33 is excitedly driven by the feeder control unit 28 to move the drive shaft 33a upward (arrow j). As a result, the gate drive member 34 is displaced upward, a predetermined clearance C is secured between the lower end portion of the gate 34a and the guide surface 32a of the guide member 32, and the gate mechanism 22 is opened. In this state, the carrier tape 14 inserted from the insertion port 5d is allowed to enter the downstream side through the clearance C. In the state where the solenoid 33 is excitedally driven to open the gate mechanism 22, the indicator lamps arranged on the operation / display panel 26 or other parts are lit to indicate that the gate mechanism 22 is in the open state. indicate. Further, after the operation / display panel 26 is operated to open the gate mechanism 22, the opening / closing operation can be set so that the gate mechanism 22 is automatically closed after a lapse of a predetermined time.

In the above configuration, the gate 34a is provided at the insertion port 5d into which the carrier tape 14 containing the parts is inserted. The solenoid 33 and the spring member 36 form a gate drive mechanism that drives the gate 34a in the opening / closing direction. That is, the gate drive mechanism includes a spring member 36 that urges the gate 34a in the closing direction, and a solenoid 33 that drives the gate 34a in the opening direction against the urging force of the spring member 36. ..

FIG. 6 shows the proper use of the carrier tape 14 by the gate mechanism 22 for allowing or prohibiting entry into the tape running path 5c. FIG. 6A shows a case where the solenoid 33 is in a non-excited state, that is, when the gate mechanism 22 is closed by the feeder control unit 28, or when the tape feeder 5 is in a non-energized state where power is not supplied. There is. In this case, the gate driving member 34 is pushed down by the urging force of the spring member 36 (arrow k), the gate 34a comes into contact with the guide surface 32a, and the gate mechanism 22 is closed. As a result, even if the carrier tape 14 (here, the leading tape 14 (1)) is to be inserted through the insertion port 5d, the gate mechanism 22 prohibits the carrier tape 14 from entering.

FIG. 6B shows a case where the solenoid 33 is excited and driven by the feeder control unit 28 while the tape feeder 5 is energized, that is, a case where the operator operates the operation / display panel 26 to open the gate mechanism 22. Shown. In this case, the gate driving member 34 is pushed up against the urging force of the spring member 36 (arrow l), and the gate 34a is opened with respect to the guide surface 32a. As a result, in a state where the preceding tape 14 (1) is inserted through the insertion port 5d and the tape is fed to the tape traveling path 5c, the following tape 14 (2) is further passed through the clearance C between the gate 34a and the guide surface 32a. Can be inserted in layers.

FIG. 6C shows a case where the power is cut off while the preceding tape 14 (1) is being supplied and the power is not supplied. In this case, since the solenoid 33 is in the non-excited state, the gate driving member 34 is pushed down by the spring member 36 (arrow m), and the gate 34a is in contact with the upper surface of the preceding tape 14 (1). .. In such a state, even if the succeeding tape 14 (2) is inserted through the insertion slot 5d, the gate 34a is in the closed state, so that the succeeding tape 14 (2) is prohibited from being inserted by the gate mechanism 22. ..

FIG. 7 shows the details of the shape of the lower end portion of the gate 34a provided on the gate drive member 34. FIG. 7A shows a cross section taken along the line AA in FIG. 5A, and a cutout portion 34b is provided at the lower end portion where the gate 34a abuts on the guide surface 32a, as shown in FIG. 7B. Is provided. As shown in FIG. 7C, the lower end of the gate 34a comes into contact with the upper surface of the inserted carrier tape 14 when the gate 34a is driven in the closing direction with the carrier tape 14 inserted. It is a tangent part.

A notch 34b is provided on the contact surface in a range including the cover tape 14c attached to the carrier tape 14, that is, a portion corresponding to a component housed in the carrier tape 14. By providing such a notch 34b, the cover tape 14c is in sliding contact with the contact surface of the gate 34a in a state where the gate mechanism 22 is closed and the gate 34a is in contact with the upper surface of the carrier tape 14. It is possible to prevent damage to parts. That is, if the parts of the carrier tape 14 are standing in the parts pocket 14a, there is a possibility that the parts are in contact with the cover tape 14c. Even in such a case, damage to the parts can be prevented by providing the notch portion 34b at the contact portion of the gate 34a.

As described above, in the tape feeder 5 and the component mounting device 1 shown in the present embodiment, a gate drive mechanism that drives the gate 34a provided in the insertion port 5d into which the carrier tape 14 containing the components is inserted in the opening / closing direction. Is composed of a spring member 36 that urges the gate 34a in the closing direction and a solenoid 33 that drives the gate 34a in the opening direction against the urging force of the spring member 36. As a result, the gate 34a is always kept closed by the spring member 36 in the non-energized state, and the insertion of the carrier tape 14 from the insertion port 5d is prohibited. Therefore, even when the tape feeder 5 is removed from the power supply and is in a non-energized state, it is possible to prevent the operator from erroneously setting the carrier tape 14 on the tape feeder 5 which should not be originally attached. be able to.

The tape feeder and component mounting device of the present invention have the effect of preventing erroneous setting of the carrier tape on the tape feeder in a non-energized state, and component mounting for mounting the components supplied by the tape feeder on the substrate. Useful in the field.

1 Parts mounting device 3 Board 4 Parts supply part 5 Tape feeder 5c Tape running path 5d Insertion port 9 Mounting head 14 Carrier tape 22 Gate mechanism 33 Solenoid 34 Gate drive member 34a Gate 34b Notch 36 Spring member

Claims (5)

A tape feeder provided with a gate provided at an insertion port into which a carrier tape containing parts is inserted, and a gate drive mechanism for driving the gate in the opening / closing direction.
The gate drive mechanism is a tape feeder that electrically opens and closes the gate and closes the gate when the tape feeder is in a non-energized state. The tape feeder according to claim 1, further comprising a tape feeding mechanism for feeding the parts housed in the inserted carrier tape to a pickup position. The gate includes a contact portion that comes into contact with the upper surface of the inserted carrier tape in a state where the gate is driven in the closing direction, and the contact portion corresponds to the component housed in the carrier tape. The tape feeder according to claim 1 or 2, wherein a notch is provided in a portion to be formed. It is a component mounting device that takes out components from a tape feeder placed in the component supply unit by a component mounting mechanism and transfers them to a board for mounting.
The tape feeder includes a gate provided at an insertion port into which a carrier tape containing parts is inserted, and a gate drive mechanism for driving the gate in the opening / closing direction.
The gate drive mechanism is a component mounting device that electrically opens and closes the gate and closes the gate when the tape feeder is in a non-energized state. The component mounting device according to claim 4, further comprising a tape feeding mechanism for feeding the component housed in the inserted carrier tape to a pickup position.

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