WO2014087485A1 - Electronic component conveyance device and taping unit - Google Patents

Abstract

Provided are: an electronic component conveyance device that can easily and reliably prevent the rolling of electronic components during housing into a carrier tape; and a taping unit. The electronic component conveyance device (1) and taping unit (47) detect the amount of position deviation of a pocket position with respect to the halting position (P) of a holding means (3) for a plurality of pockets (51) of a carrier tape (50) that houses electronic components (D), and on the basis of an intermediate value of the largest value and smallest value of the plurality of amounts of position deviation, correct position deviation of the carrier tape (50) by moving the carrier tape in the widthwise direction and lengthwise direction.

Description

Electronic component transfer device and taping unit

The present invention relates to an electronic component transport apparatus that performs process processing while transporting an electronic component and stores the electronic component on a carrier tape, and a taping unit on which the carrier tape is set.

Electronic components such as semiconductor elements are separated into individual pieces through various assembly processes such as dicing, mounting, bonding, and sealing, and then subjected to post-processes such as various inspections and packed in carrier tapes, container tubes, and the like. Shipped. Examples of the post-process include a marking process, an appearance inspection, an electrical property inspection, a lead molding process, a classification of electronic components, or a combination of these processes.

The post-process including the packing process is mainly performed by an electronic component transport apparatus that transports the electronic component to the process processing mechanism. The electronic component transport apparatus includes a transport mechanism that aligns and transports electronic components and various process processing mechanisms on the transport path. As the transport mechanism, a turntable transport system, a linear transport system, or the like is generally used, and electronic components are sequentially supplied to various process processing mechanisms arranged on the transport path. The transport mechanism has holding means constituted by vacuum suction, electrostatic suction, Bernoulli chuck, or mechanical chuck mechanism, holds electronic components by the holding means, and sequentially transports the electronic components to the process processing mechanism. To go.

In the process processing mechanism, a taping unit is installed downstream of the transport path. The taping unit includes a carrier tape in which a plurality of pockets are arranged in the longitudinal direction, and a sprocket that intermittently conveys the carrier tape so as to match the positional relationship between the stop position of the holding means and the pocket. The holding means moved to the stop position is positioned above the pocket of the carrier tape, and the electronic component is detached from the pocket.

∙ After storage in the pocket, the presence or absence of electronic components will be confirmed. The falling of the electronic component means that the electronic component is not stored in the correct orientation and position by being caught on the inner wall surface of the pocket. This fall is discriminated by visual observation by the operator or by a camera provided at the rear stage in the feeding direction of the carrier tape. When the roll occurs, the electronic component transport device is temporarily stopped, and the operator manually replaces it with a non-defective product, or performs automatic excision by mechanical punching.

Stopping the electronic component transport device due to the occurrence of falling leads to a reduction in operating rate. For this reason, it is desirable that the electronic component be stored in the pocket so as to be stationary in the correct orientation and position. Therefore, the conventional electronic component transport apparatus includes a posture correction unit and a posture determination unit that correct the posture of the electronic component in the preceding stage on the transport path than the taping unit.

However, even if the posture of the electronic component is corrected, if the carrier tape itself is misaligned, the electronic component may still fall. In recent years, in particular, since electronic components have been miniaturized, there is a possibility that even a slight misalignment of a pocket may cause a roll.

Therefore, a mark indicating the stop position of the holding means in the conveyance direction is provided on the upper surface of the main body of the taping unit, and when the carrier tape is set, the positional deviation amount between the mark and the pocket is measured, and this deviation amount is set to zero. In addition, it has been attempted to correct the displacement of the carrier tape in the transport direction and the width direction to eliminate the positional deviation (for example, see Patent Document 1).

JP 2011-11748 A

However, as described above, since the pockets of the carrier tape are also miniaturized in accordance with the miniaturization of the electronic components, it is difficult to make the intervals between the pockets completely equal, and the intervals may vary. is there. For this reason, even if the positional deviation correction is performed for one pocket and the stop position is adjusted, there is a possibility that the other pockets do not match the stop position.

In Patent Document 1, in order to solve this problem, a positional shift amount is measured for a plurality of pockets, an average value of the positional shift amounts is calculated, and the average value is used as a shift correction amount.

However, even when a plurality of positional deviation amounts are detected, there are cases where most of the positional deviation amounts are set in an intermediate range and there is only one large positional deviation amount. In such a case, if the average value is used as a shift correction amount, the average value is close to an intermediate range in which most of the position shift amounts are solidified, and as a result, a large position shift is corrected to an appropriate range. However, there is a possibility that only an insufficient deviation correction amount is calculated.

The present invention has been proposed in order to solve the above-described problems. Regardless of the variation in the interval between the plurality of pockets of the carrier tape, the carrier tape is arranged so that the pockets are positioned in an appropriate range. It is an object of the present invention to provide an electronic component transport apparatus and a taping unit that can correct misalignment and prevent the electronic components from falling over easily and more reliably.

An electronic component transport device according to the present invention is an electronic component transport device that performs process processing while transporting an electronic component, and is intermittent along the transport path while holding the transport path of the electronic component and the electronic component. A holding means that moves, and the electronic component that is arranged at a stop position of the holding means in the transport path and is held by the holding means is accommodated in a carrier tape in which a plurality of pockets are arranged in the longitudinal direction, and is moved on the transfer path. A taping unit for transporting, the taping unit detecting a pocket position of the carrier tape, and based on a detection result by the pocket position detecting means, the pocket position relative to the stop position. Misalignment detection means for detecting misalignment, and the maximum and minimum values of misalignment detected for multiple pockets A correction means for correcting the positional deviation of the carrier tape on the basis of the value are those comprising a.

The taping unit may further include mark applying means for applying a mark indicating the stop position of the holding means with respect to the pocket to the carrier tape.

The mark applying means may include a pin member attached to the holding means, and the mark indicating the stop position of the holding means may be a hole formed in the carrier tape by the pin member.

The mark indicating the stop position of the holding means may be provided on the bottom surface of the pocket of the carrier tape.

The mark indicating the stop position of the holding means may be given to a connecting region connecting the pockets of the carrier tape.

The pin member may include a pair of needles that are spaced apart so as to open a pair of holes in the connecting region on both ends in the longitudinal direction of the pocket of the carrier tape.

The pocket position detecting means may detect the center position of the pocket, and the deviation detecting means may detect a positional deviation amount with respect to a mark indicating the stop position of the holding means at the center position of the pocket.

The pocket position detecting means may detect the center position of the pocket, and the displacement detecting means may detect a position displacement amount of the center position of the pocket with respect to an intermediate position of the pair of holes.

The taping unit corresponds to a sprocket provided with a plurality of pins that engage with the carrier tape and transfer the carrier tape, a driving unit that rotates the sprocket, and a distance between each pin of the sprocket. Control means for controlling the drive means so as to increase or decrease the amount of rotation of the sprocket.

The correction unit may include a sprocket that conveys the carrier tape, and a drive unit that rotates the sprocket by an amount corresponding to a positional shift in the longitudinal direction of the carrier tape.

The correction means may include a sprocket that conveys the carrier tape and a micrometer that moves the sprocket by an amount corresponding to a positional deviation in the width direction of the carrier tape.

The present invention provides a carrier tape in which a plurality of pockets are arranged in a longitudinal direction, arranged at a stop position of a holding unit that holds electronic components and intermittently moves along a conveyance path. The present invention can also be applied to a taping unit that accommodates and transports the transport path.

According to the present invention, the amount of positional deviation is detected for a plurality of pockets of the carrier tape, and the positional deviation of the carrier tape is corrected based on the intermediate value between the maximum value and the minimum value. Even with a certain carrier tape, the positional deviation can be corrected so that each pocket is located in an appropriate range. As a result, it is possible to provide an electronic component transport device and a taping unit that are excellent in reliability and economy, because the rolling of electronic components is reduced and the operating rate of the device is improved.

It is a top view which shows schematic structure of the electronic component conveying apparatus which concerns on 1st Embodiment. It is a side view which shows schematic structure of the electronic component conveying apparatus which concerns on 1st Embodiment. It is a side view which shows schematic structure of the taping unit which concerns on 1st Embodiment. It is a side view which shows schematic structure of the taping unit and mark provision means which concern on 1st Embodiment. It is a top view which shows schematic structure of the taping unit which concerns on 1st Embodiment. It is a block diagram which shows the structure of the control part which concerns on 1st Embodiment. It is a figure which shows typically the dispersion | variation correction | amendment of the space | interval of the pin of a sprocket in tape feed control. (A) It is a schematic diagram which shows the pocket image imaged with a camera, (b) is a schematic diagram which shows the position shift of the center position of a pocket and the stop position of a holding means. It is a flowchart which shows the position correction operation | movement which concerns on 1st Embodiment. It is a schematic diagram showing an example of a position correction operation for determining a shift correction amount from a plurality of position shift amounts. It is a side view which shows schematic structure of the taping unit and mark provision means which concern on 2nd Embodiment. It is a schematic diagram showing an example of a position correction operation for determining a position correction amount from a plurality of positional deviation amounts.

Hereinafter, embodiments of an electronic component transport device and a taping unit according to the present invention will be described in detail with reference to the drawings.

[1. First Embodiment]
[Electronic component conveyor]
FIG. 1 is a plan view illustrating a schematic configuration of the electronic component transport device according to the first embodiment. FIG. 2 is a side view illustrating a schematic configuration of the electronic component transport device according to the first embodiment.

The embodiment shown in FIGS. 1 and 2 uses the electronic component transport apparatus 1 of the present invention as a post-process processing apparatus that performs various process processes while aligning and transporting the electronic component D. Therefore, the electronic component transport apparatus 1 includes various process processing mechanisms for the electronic component D and a transport mechanism that sequentially transports the electronic component D to the various process processing mechanisms.

The electronic component D is a component used for electrical products, and includes a semiconductor element. Examples of semiconductor elements include transistors, integrated circuits, resistors, capacitors, and the like. Process processing is mainly a post-process after each assembly process such as dicing, mounting, bonding, and sealing, and includes marking, visual inspection, test contact, sorting, sorting, or a combination thereof. It is. The electronic component transport apparatus 1 according to the present embodiment performs at least a packing process.

The transport mechanism includes a turntable 21. The center of the turntable 21 is supported by a drive shaft of a direct drive motor 22 disposed below. The turntable 21 rotates intermittently at a predetermined angle as the direct drive motor 22 is driven.

A plurality of holding means 3 for holding the electronic components D are attached to the outer periphery of the turntable 21 at regular intervals along the outer periphery of the turntable 21. The arrangement interval of the holding means 3 is equal to the rotation angle of one pitch of the turntable 21. The outer periphery of the turntable 21 is a conveyance path for the electronic component D. That is, the electronic component D is conveyed along the outer periphery of the turntable 21. By holding the electronic component D by the holding means 3 and rotating the turntable 21, the electronic component D is aligned and conveyed in the direction along the outer peripheral line.

In this embodiment, the holding means 3 is a suction nozzle 31 that sucks and detaches the electronic component D. The inside of the pipe of the suction nozzle 31 communicates with a pneumatic circuit of a vacuum generator (not shown). The suction nozzle 31 sucks the electronic component D by generating a negative pressure and releases the electronic component D by vacuum break.

The suction nozzle 31 is supported by a support portion 32 attached to the outer peripheral portion of the turntable 21 so that the lower end protrudes from the lower surface of the turntable 21, and the protruding end sucks and detaches the electronic component D. It becomes the adsorption | suction part 31a to be made. The support portion 32 supports the suction nozzle 31 so as to be slidable, and the suction nozzle 31 can be moved up and down with respect to the turntable 21. The ascending / descending direction is a vertical direction when the spreading direction of the turntable 21 is assumed to be a horizontal plane.

At each stop position P of the suction nozzle 31, a drive unit 33 including an operation rod 34 is disposed. The drive unit 33 is specifically a motor and moves the operation rod 34 up and down. The operation rod 34 is disposed with its lower end opposed to the pressed portion 31 b provided at the upper end of the suction nozzle 31, and comes into contact with the pressed portion 31 b of the suction nozzle 31 in accordance with the drive of the drive unit 33. Pressure is applied to push down the suction nozzle 31 downward.

As shown in FIG. 1, as a process processing mechanism, for example, a parts feeder 41, a marking unit 42, an appearance inspection unit 43, and a test contact unit are arranged in the rotation direction of the turntable 21, in other words, in order from the previous stage of the transport path. 44, a sorting / sorting unit 45, an attitude determination unit 49, an attitude correction unit 46, a taping unit 47, and a defective product discharge unit 48 are arranged.

These process processing mechanisms surround the turntable 21 and are arranged at equal intervals in the outer circumferential direction. The arrangement interval is the same as or equal to an integral multiple of the rotation angle of one pitch of the turntable 21. The arrangement position of the process processing mechanism coincides with the stop position P of the holding means 3. At the stop position P, one of the transport processing mechanisms is arranged. If the number of stop positions P is equal to or greater than the number of transport processing mechanisms 4, these numbers do not have to be the same, and there may be a stop position P at which the transport processing mechanism is not disposed.

The parts feeder 41 is a device that supplies the electronic component D to the electronic component transport device 1. This parts feeder 41 combines a circular vibration parts feeder and a linear supply vibration feeder, and arranges and continuously conveys a large number of electronic components D to the end of the conveyance path immediately below the outer peripheral edge of the turntable 21. The marking unit 42 has a lens for laser irradiation facing the electronic component D, and performs marking by irradiating the electronic component D with laser.

The appearance inspection unit 43 has a camera, takes an image of the electronic component D, and inspects the presence or absence of an electrode shape of the electronic component D, a surface defect, a flaw, a dirt, a foreign substance and the like from the image. The test contact unit 44 has a contact made of a metal such as a beryllium copper plate or a pin. The contact is brought into contact with the lead of the electronic component D, and a current is passed or a voltage is applied to the electronic component. Measure and inspect electrical characteristics such as voltage, current, resistance, or frequency of D.

The classification / sorting unit 45 classifies the electronic component D into a defective product and a non-defective product according to the electrical characteristics and the result of the appearance inspection, and classifies and shoots according to the level. The posture determination unit 49 includes a camera and determines the posture of the electronic component D. The posture of the electronic component D to be determined includes the orientation and the holding position by the suction nozzle 31. The posture correction unit 46 aligns the electronic component D and positions the holding position according to the posture determined by the posture determination unit 49.

The taping unit 47 stores and packs the electronic component D determined to be non-defective as will be described later. The defective product discharge unit 48 discharges the electronic component D that has not been taped and packed from the electronic component inspection apparatus 1.

Such an electronic component transport apparatus 1 includes a transport control unit (not shown), and sends electrical signals to the direct drive motor 22, the drive unit 33 that raises and lowers the suction nozzle 31, the vacuum generator, and various process processing mechanisms 41 to 49. These operation timings are controlled by sending them out. That is, the conveyance control unit includes a ROM, a CPU, and a driver that store a control program, and outputs an operation signal at each timing to each drive mechanism through an interface according to the control program.

The electronic component transport apparatus 1 starts processing the electronic component D as described below under the control of the transport control unit. After the start of processing, the turntable 21 repeats rotation at a predetermined angle and stop for a predetermined time. Each suction nozzle 31 sequentially moves to each stop position P on the outer periphery of the turntable 21 by intermittent rotation of the turntable 21. When each suction nozzle 31 is moved to the stop position P, it is lowered toward the stage of the process processing mechanisms 41 to 49 by the operation of the drive unit 33 and the operation rod 34, and the electronic component D is detached by vacuum break. Upon receiving the electronic component D, the process processing mechanisms 41 to 49 process the electronic component D. After the processing of the electronic component D is completed, the suction nozzle 31 descends again toward the stage and holds the electronic component D. Depending on the contents of the process processing mechanisms 41 to 49, there are those that do not perform the lowering, detaching, re-holding, and raising operations of the suction nozzle 31.

By such an operation of the electronic component conveying apparatus 1, the electronic component D is supplied to the conveying path from the parts feeder 41 in the first cycle, and in each subsequent cycle, the marking unit 42, the appearance inspection unit 43, and the test are sequentially performed. It is supplied to the contact unit 44 and the sorting / sorting unit 45 to perform various processes.

Then, after the posture correction of the electronic component D by the posture determination unit 49 and the posture correction unit 46, the electronic component D is supplied to the taping unit 47 and packed in a carrier tape. The electronic component D that has not been packed due to a defect is supplied to the defective product discharge unit 48 and discharged from the electronic component transport apparatus 1.

[Taping unit]
The taping unit 47 provided in the electronic component transport apparatus 1 will be described in further detail. FIG. 3 is a top view showing a schematic configuration of the taping unit 47. FIG. 4 is a side view showing a schematic configuration of the taping unit 47. FIG. 5 is a plan view showing a schematic configuration of the taping unit 47.

The taping unit 47 includes a guide rail 471 extending in the longitudinal direction of the apparatus on the upper surface of the main body, and intermittently conveys the carrier tape 50 on the guide rail 471. The taping unit 47 is disposed at the stop position P of the holding means in the transport path, and the electronic component detached from the holding means is accommodated in the carrier tape 50.

The carrier tape 50 is a packaging material that houses the electronic component D, and has a belt shape. A plurality of concave pockets 51 are formed on the carrier tape 50 by embossing or the like at a predetermined distance in the longitudinal direction. An area between the pockets 51 is referred to as a connecting area 52.

The pocket 51 is a storage area for the electronic component D. That is, by the taping unit 47, each pocket 51 is sequentially transferred to the stop position P of the holding means 3, and electronic components are accommodated in each pocket 51.

Sprockets 472 are disposed at both ends of the taping unit 47 in the longitudinal direction. 3 and 4, only one sprocket 472 is shown. The sprocket 472 has a cylindrical roll shape and is rotatable via a central axis. A plurality of pins protruding along the circumferential direction are provided on the circumferential surface of the sprocket. The pins are arranged at equal intervals, but there may be slight variations depending on the pins.

The sprocket 472 is mechanically connected to the drive motor 473 by a shaft, and rotates by receiving the drive force of the drive motor 473. Examples of the drive motor 473 include a stepping motor that can achieve a minute rotation angle. As described above, when the interval between the pins varies, the rotation angle can be adjusted according to each interval.

The carrier tape 50 has perforations (not shown) that are spaced apart by a predetermined distance from one of the long sides. When the sprocket 472 rotates, the pins provided on its peripheral surface are sequentially caught by perforation, and the carrier tape 50 is drawn onto the guide rail 471 and transferred. In each pocket 51 of the carrier tape 50 drawn out on the guide rail 471, an electronic component is accommodated at the stop position P. The carrier tape 50 containing the electronic components travels on the guide rail 471 toward the other sprocket 472 and is wound around the other sprocket 472 and packed.

In other words, the electronic component housed in the carrier tape 50 is formed on the guide rail 471 and transferred on the transfer path realized by the movement of the carrier tape 50 by the sprocket 472. Also, the electronic component is transferred in the transfer direction, which is the direction in which the carrier tape 50 is unwound by one sprocket 472.

Furthermore, the taping unit 47 includes a camera 474 on the carrier tape 50 transfer path. The camera 474 is an image pickup unit having an image pickup device such as a CMOS or a CCD, and takes an image of one point on the transfer path of the carrier tape 50. The arrangement position of the camera 474 is a stage after the stop position P, and is an upper position where the pocket 51 in the traveling direction of the carrier tape 50 can be imaged, for example.

The camera 474 is connected to the control unit 477. The control unit 477 includes a defect detection unit (not shown), and an image captured by the camera 474 is transmitted to the defect detection unit. The defect detection unit determines whether or not the electronic component D is defective from the captured image. If a defect is detected, the electronic component D is removed from the pocket 51 by a removing means such as a chuck or a suction nozzle or by manual operation. The term “defective” is not only when the appearance of the electronic component is flawed, but also when the electronic component is not stored in the pocket 51 in the correct direction or position, or when the front and back are not stored in the correct orientation. Including.

In the taping unit 47, position correction in the longitudinal direction and the width direction of the carrier tape 50 is possible. In particular, in the adjustment work at the time of replacement of the carrier tape 50, the taping unit 47 performs a position correction operation for detecting the positional deviation of the carrier tape 50 and eliminating the positional deviation.

In order to achieve this position correction operation, the taping unit 47 is provided with mark applying means for applying a mark indicating the stop position P of the holding means to each pocket 51. In the position correction operation, the camera 474 and the control unit 477 described above function as a pocket position detection unit that detects the pocket position and a shift detection unit that detects a positional shift amount between the mark and the pocket 51. In the position correction operation, the sprocket 472 and the drive unit described above function as a correction unit that corrects a positional deviation in the transport direction of the carrier tape 50. Further, the taping unit 47 includes a screw adjuster 475 including a micrometer as a correction unit that corrects the positional deviation of the carrier tape 50 in the width direction. Hereinafter, each configuration will be described in detail.

[Marking means]
The taping unit 47 includes a pin member 479 that is detachably attached to the tip of the suction nozzle 31 that is a holding unit as a mark applying unit. The pin member 479 includes a base end portion 479a on a column attached to the suction nozzle and a needle portion 479b extending from the center of the base end tip.

The base end portion 479a on the column has an outer diameter that substantially matches the suction nozzle. In the position correction operation, the suction nozzle 31 of the holding means 3 is removed from the support portion 32, and a pin member 479 is attached to the support portion 32 and used instead.

The needle portion 479b has a cone shape with a sharp tip. By lowering the pin member 479 attached to the holding means 3, the needle portion 479 b comes into contact with and penetrates the carrier tape 50 located at the stop position P, and a substantially circular hole 511 is made in the carrier tape 50. That is, this hole 511 vacated by the needle portion 479 b becomes a mark indicating the stop position P of the holding means for each pocket 51.

In the present embodiment, the hole 511 is formed in the bottom surface 510 of the pocket 51 of the carrier tape 50. That is, by lowering the pin member 479 while feeding the carrier tape 50 at the same pitch in the normal taping process, as shown in FIG. 5, each bottom surface 510 of each of the continuous pockets 51a, 51b, 51c, 51d, 51e. Will be given a mark. The length and diameter of the needle portion 479b are appropriately adjusted so that the hole 511 has an appropriate size as a mark.

[Correction means]
The longitudinal position correction mechanism of the carrier tape 50 is the sprocket 472 and the drive motor 473 as described above. By driving the drive motor 473 and rotating the sprocket 472 by a predetermined angle, the position of the carrier tape 50 in the longitudinal direction is offset.

The position correction mechanism in the width direction includes a screw adjuster 475 and a compression spring 476. The screw adjuster 475 is a screw mechanism having a micrometer head, and is provided so that the screw tip comes into contact with one side surface of the sprocket 472. The micrometer head converts the rotation angle of the screw into a displacement amount of the screw position and reflects the displacement amount on the scale. The compression spring 476 is fixed so as to abut on the opposite side surface of the sprocket 472 and applies a biasing force in the direction of the screw adjuster 475.

The screw adjuster 475 pushes and moves in the width direction by sliding the sprocket 472 against the shaft against the pressing force of the compression spring 476 by increasing the protruding length of the screw tip by adjusting the screw. When the protrusion length of the screw adjuster 475 is reduced, that is, when the tip of the screw adjuster 475 is moved away from the end face of the sprocket 472, the sprocket 472 moves in the opposite direction by the pressing force of the compression spring 476. In this way, fine adjustment is possible by using the micrometer head, but other position correction mechanisms can be used as appropriate. For example, the position correction can be performed by mounting the table itself of the taping unit on the rail and moving it in the width direction.

[Control unit]
Control of the position correction operation of the carrier tape 50 is performed by the control unit 477 based on the photographing result by the camera 474. The control unit 477 includes, for example, an arithmetic processing device that executes processing according to a program to control each mechanism, a main storage device that stores a program and an arithmetic processing result of the arithmetic processing device, an external storage device that stores a program, and each mechanism A driver that actually operates the computer and a monitor that displays a screen are included. The control unit 477 may be provided independently by the taping unit 47 or may be included in the configuration of the transport control unit of the electronic component transport apparatus 1.

FIG. 6 is a block diagram illustrating a part of the configuration of the control unit 477. In order to control the position correction operation, the control unit 477 includes a tape feed control unit 477a, an elevation control unit 477b, a camera control unit 477c, an image processing unit 477d, a displacement detection unit 477e, a display unit 477f, and a correction amount calculation. Unit 477g, a correction control unit 477h, and an input device 477i.

The tape feed control unit 477a drives the drive motor 473 that rotates the sprocket 472 to position the pocket 51a of the carrier tape 50 at the stop position P. The tape feed controller 477a moves the carrier tape 50 by a predetermined distance. This moving distance is equal to the distance from the stop position P to the shooting point C of the camera 474. That is, the pocket 51a at the stop position P and the connecting area 52 are moved to the photographing point C, respectively.

As described above, the pins of the sprocket 472 are arranged at equal intervals, but there may be slight variations in the distance between the pins of the sprocket 472.

Therefore, the tape feed controller 477a performs a correction process to increase or decrease the rotation amount of the sprocket 472 according to the difference in the distance between the pins of the sprocket 472. FIG. 7 is a diagram schematically illustrating an example of processing for correcting the variation in the pin interval of the sprocket 472 by the tape feed control unit 477a. Four pins j1, j2, j3, and j4 are formed on the peripheral surface of the sprocket 472. The distance between the pins j1 and j2 is t, the distance t + 1 between the pins j2 and j3, and the distance t− between the pins j3 and j4. The distance between each pin is different from 1 and there is variation. In this case, the storage unit (not shown) of the taping unit 47 stores in advance the order of the four pins j1, j2, j3, j4 and the intervals t, t + 1, t−1 of the pins. Then, the tape feed controller 477a controls the drive of the drive motor 473 according to the stored interval between the pins, and increases or decreases the rotation angle of the sprocket 472. As a result, the pin variation of the sprocket 472 is corrected, and the pockets 51 are sequentially transferred to the stop position P at a pitch that matches the conveyance pitch of the main table.

The lifting control unit 477b drives the driving unit 33 to lower the pin member 479 toward the carrier tape 50 in order to form the hole 511. The lowered position is the bottom surface 510 of the pocket 51 a of the carrier tape 50. That is, the tape feed control unit 477a moves the bottom surface 510 of the pocket 51a to the stop position P before the control by the elevation control unit 477b. The descending amount is set such that the tip of the needle portion 479b penetrates the bottom surface 510 of the pocket 51a and a substantially circular hole 511 is formed.

The camera control unit 477c shoots the pocket image Tp of the pocket 51a located at the shooting point C on the camera 474. FIG. 8A is a schematic diagram illustrating an example of the pocket image Tp. A hole 511 formed on the bottom surface 510 of the pocket 51a is also photographed in the pocket image Tp.

The image processing unit 477d analyzes the image data of the shooting point C acquired by the camera 474, and specifies the center position P1 of the pocket 51a. Specifically, the image processing unit 477d detects the contour of the pocket 51a through binarization processing, normalization processing, contour extraction processing, and the like. Further, the intersection of the center line of the long side and the center line of the short side of the pocket 51a is specified as the center position P1 of the pocket 51a. Similarly, the image processing unit 477d analyzes the image data to identify the area of the hole 511, further detects the center of gravity coordinates of the hole, and identifies the center position P2 of the hole.

The displacement detection unit 477e detects a displacement amount of the center position P1 of the pocket 51a with respect to the center position P2 of the hole 511. FIG. 8B is a schematic diagram showing a positional deviation between the pocket center position P1 and the hole center position P2. In other words, the position of the hole 511 is a position when the holding means 3 moves to the stop position P. That is, if the carrier tape 50 is set with high accuracy and the pocket 51a is accurately moved to the stop position P, there is no displacement between the center position P1 of the pocket 51a and the center position P2 of the hole 511. In the position comparison processing, the positional deviation amount is calculated by subtracting the X direction and the Y direction of the coordinates indicating the center position P1 of the pocket 51a and the center position P2 of the hole 511, respectively. For simplicity of calculation, the camera 474 is arranged so that the X direction on the image corresponds to the width direction of the carrier tape 50 and the Y direction on the image corresponds to the longitudinal direction of the carrier tape 50.

Thus, the positional shift amount calculated for the pocket 51a is stored in a storage unit (not shown). The control unit 477 sequentially repeats the same processing for the successive pockets 51b, 51c, 51d, and 51e, calculates these positional deviation amounts, and stores them in the storage unit. Although the number of pockets 51 for calculating the positional deviation can be set as appropriate, in the present embodiment, for example, the positional deviation amount is calculated for five pockets 51a, 51b, 51c, 51d, and 51e.

The correction amount calculation unit 477g selects a maximum value and a minimum value from a plurality of positional deviation amounts stored in the storage unit, calculates an intermediate value thereof, and determines a deviation correction amount from the intermediate value. This intermediate value indicates the amount of deviation in the X and Y directions to be corrected. Therefore, in each of the X direction and the Y direction, movement in the opposite direction, which is the same amount as the amount of displacement, becomes a displacement correction amount for eliminating the position displacement.

The display unit 477f is a monitor and displays the calculation result of the correction amount calculation unit 477g, that is, the deviation correction amount. The deviation correction amount is displayed separately in the X direction and the Y direction. The input device 477i is a user input interface and is used to switch the operation mode of the electronic component transport device 1. As the operation mode, a position correction mode for performing at least position shift detection and position shift correction is prepared. Examples of the input device 477i include a button, a touch panel, or a mouse. When the input device 477i is configured by a touch panel display, it can be shared with the display unit 477f.

The correction control unit 477h drives the drive motor 473 that rotates the sprocket 472 to move the carrier tape 50 by a distance corresponding to the amount of deviation correction in the Y direction, that is, the amount of deviation correction in the longitudinal direction of the carrier tape 50. The width direction of the carrier tape 50 is moved by the user adjusting the screw adjuster 475 while referring to the amount of deviation correction in the X direction of the display unit 477f.

[Position correction operation]
The position correction operation of the carrier tape 50 performed by the above-described configuration will be described based on FIGS. 9 and 10 in addition to the above-described drawings. FIG. 9 is a flowchart showing the position correction operation. FIG. 10 is a schematic diagram illustrating an example of a position correction operation for determining a shift correction amount from a plurality of position shift amounts.

First, the carrier tape 50 is set on the taping unit 47 by the user (step S01). The carrier tape 50 is set so that the pocket 51a is positioned at the stop position P. For example, a positional shift may occur due to a lot difference or a positioning error at the time of setting. Specifically, for example, as shown in FIG. 8B, the center position P1 of the pocket 51a may have a positional deviation G (ΔX, ΔY) with respect to the stop position P of the holding means 3. is there.

Next, the suction nozzle 31 is removed from the support portion 32 of the holding means 3 by the user, and a pin member 479 is attached as a mark providing means instead (step S02). The setting of the carrier tape 50 in step S01 and the attachment of the pin member 479 in step S02 may be performed before and after.

Next, the position correction mode is selected by the user using the input device 477i (step S03).

When the position correction mode is selected, the elevation controller 477b lowers the pin member 479. The needle portion 479b at the tip of the pin member 479 contacts and penetrates the bottom surface 510 of the pocket 51a to form a substantially circular hole 511 (step S04). This hole 511 serves as a mark indicating the stop position P of the holding means with respect to the pocket 51a.

The tape feed controller 477a moves the carrier tape 50 by the distance that the pocket 51a moves from the stop position P to the shooting point C of the camera 474 (step S05). When there is a variation in the pin spacing of the sprocket 472, the tape feed controller 477a increases or decreases the rotation angle of the sprocket 472 for each pitch in accordance with the pin spacing stored in advance. As a result, variations in the pins of the sprocket 472 are absorbed, and the carrier tape 50 is transferred at the same pitch.

When the pocket 51a is moved to the photographing point C, the camera control unit 477c causes the camera 474 to photograph the pocket image Tp (step S06). As shown in FIG. 8A, the pocket image Tp projects the bottom surface 510 of the pocket 51a and the hole 511 formed in the bottom surface 510.

The image processing unit 477d detects the bottom surface 510 and the hole 511 of the pocket 51a from the pocket image Tp, and specifies the center position P1 of the pocket 51a and the center position P2 of the hole 511, that is, the stop position P of the holding means (step S07). . Specifically, the pocket image Tp is subjected to binarization processing, normalization processing, contour extraction processing, and the like, so that the region of the bottom surface 510 is distinguished from other regions, and the center line of the long side and the center of the short side of the bottom surface 510 are further distinguished. The intersection of the lines is calculated as the center position P1 of the pocket 51a. Similarly, the hole 511 is also subjected to binarization processing, normalization processing, contour extraction processing, and the like, so that the region of the hole 511 is distinguished from other regions, and the barycentric coordinates of the region are calculated as the center position P2 of the hole 511.

The displacement detection unit 477e detects the amount of displacement of the calculated center position P1 of the pocket 51a with respect to the center position P2 of the hole 511 (step S08). Specifically, the coordinates of the center position P1 of the pocket 51a and the coordinates of the center position of the hole 511 are differentiated for each of the X coordinate and the Y coordinate, and as shown in FIG. 8B, the positional deviation amount (ΔX, ΔY ) Is calculated.

The position shift amount calculated for the pocket 51a is stored in a storage unit (not shown). Also for the pockets 51b to 51e that are continuous with the pocket 51a, the processing of step S01 to step S08 is sequentially performed to acquire the total amount of positional deviation for five pockets (step S09).

In the process of five, the carrier tape 50 is transferred at the same pitch as the taping process, and the mark applying process and the positional deviation are successively performed on the pockets 51a to 51e sequentially entering the stop position P and the photographing point C. It is efficient if the amount detection process is performed.

However, of course, after moving from the stop position P to the photographing point C for one pocket 51 and performing the mark addition process and the positional deviation amount detection process, the next pocket 51 is moved in the direction opposite to the transfer direction. You may return to the stop position P, and you may perform a mark provision process and a position shift amount detection process with respect to the next pocket 51. FIG.

In addition, here, the mark imparting process and the positional deviation amount detection process are performed on the five pockets 51 adjacent to each other, but the positional deviation detection is performed not for the adjacent pockets but for a predetermined number of pockets by adjusting the transfer pitch. You can go.

The correction amount calculation unit 477g calculates an intermediate value between the maximum value and the minimum value from the positional shift amounts of the five pockets 51a to 51e acquired by the shift detection unit 477e, and determines the shift correction amount (step S10). . Specifically, the calculated intermediate value indicates the amount of positional deviation in the X direction and the Y direction to be corrected. By moving the carrier tape 50 in the reverse direction by the amount of this positional deviation amount, the positional deviation amount becomes zero. Therefore, the shift amount (ΔX = 0, ΔY = −1) in the reverse direction corresponding to the position shift amount of the intermediate value is the shift correction amount.

FIG. 10 schematically shows an example of the deviation correction amount calculation. Different displacement amounts are detected in the five pockets 51a to 51e. The positional deviation amount of the pocket 51a is (ΔX = 0, ΔY = + 1), the positional deviation amount of the pocket 51b is (ΔX = 0, ΔY = + 4), and the positional deviation amount of the pocket 51c is (ΔX = 0, ΔY = + 1). The positional deviation amount of the pocket 51d is (ΔX = 0, ΔY = 0), and the positional deviation amount of the pocket 51e is (ΔX = 0, ΔY = + 1). That is, the positional deviation amount is fixed in a relatively small range. Here, when the average value of the five positional deviation amounts is calculated, (ΔX = 0, ΔY = 1.4) is obtained, and a value sufficient to correct the large positional deviation of the pocket 51b is not calculated. .

In contrast, in this embodiment, an intermediate value between the maximum value and the minimum value of the positional deviation amount is calculated. Here, the maximum value of the positional deviation amount is the positional deviation amount of the pocket 51b (ΔX = 0, ΔY = + 4), and the minimum value is the positional deviation amount of the pocket 51d (ΔX = 0, ΔY = 0). The intermediate value is (ΔX = 0, ΔY = + 2). Therefore, the deviation correction amount is (ΔX = 0, ΔY = −2). In this way, by calculating the intermediate value, it is possible to determine a deviation correction amount sufficient to correct a large positional deviation of the pocket 51b as compared with the average value of the five positional deviation amounts.

When the deviation correction amount is calculated in this way, the display unit 477f displays the deviation correction amount in each of the X direction and the Y direction, that is, the width direction and the longitudinal direction of the carrier tape 50 (step S11).

Then, the correction control unit 477h moves the carrier tape 50 in the longitudinal direction by a distance corresponding to the displacement correction amount in the longitudinal direction determined by the correction amount calculation unit 477g (step S12). In the width direction, the screw adjuster 475 is adjusted by the user, and the carrier tape 50 is moved in the width direction by moving the sprocket 472 by a distance corresponding to the displacement correction amount in the width direction determined by the correction amount calculation unit 477g. Move (step S13).

[effect]
As described above, the electronic component conveying apparatus 1 and the taping unit 47 according to the present embodiment detect the positional deviation amount of the pocket position with respect to the stop position P of the holding unit for the plurality of pockets 51, and The positional deviation of the carrier tape 50 is corrected based on an intermediate value between the maximum value and the minimum value.

As a result, even when most of the misregistration amount is fixed in the middle range, it is possible to calculate the misalignment correction amount sufficient to correct a large misalignment without being affected by the value deviation. The frequency of the electronic components falling as the entire tape 50 can be reduced. As a result, the operating rate of the apparatus can be improved, so that the reliability and economy are excellent.

Further, in the present embodiment, during the position correction operation of the carrier tape 50, the pin member 479 is attached to the holding means, and the hole 511 is formed in the bottom surface 510 of the pocket 51 using the pin member 479. The hole 511 was used as a mark indicating the stop position P of the holding means, and the amount of positional deviation was detected by comparing the pocket position with the mark position.

For example, when a mark indicating the stop position P of the holding means is provided on the base of the taping unit 47, the mark can be used as a reference for correcting the positional deviation in the longitudinal direction of the carrier tape 50, but the reference in the width direction. It cannot be. In contrast, in the present embodiment, since the holding means is used to mark the bottom surface 510 of the pocket 51 of the carrier tape 50 that actually accommodates the electronic component, accurate positional deviation correction is performed in the longitudinal direction. It can be performed not only in the width direction.

Further, the hole 511 has a clear outline and can be easily distinguished from other parts during image processing, and thus is suitable as a mark indicating the stop position P of the holding means. In addition, if the hole 511 has a substantially circular shape, the center of the circle can be easily calculated, so that deviation detection is also easy.

Also, since the outline of the pocket 51 is clear and has a fixed shape, it can be easily distinguished from other parts in image processing. Further, for example, the rectangular pocket 51 can easily grasp the center position P1 of the pocket 51 by calculating the intersection of the long side center line and the short side center line.

A hole 511 serving as a mark is formed in the carrier tape 50, and the hole 511 and the center position P1 of the pocket 51 are used as comparison targets for positional deviation, so that the photographing point C of the camera 474 is set to the stop position P of the holding means. It is not necessary to perform high-precision adjustment so as to correspond completely, and accordingly, the time for exchanging the carrier tape 50 can be reduced, and the operating rate can be improved.

Furthermore, in this embodiment, the tape feed control unit 477a controls the drive motor 473 according to the difference in the distance between the pins of the sprocket 472 to increase or decrease the rotation amount of the sprocket 472. Thus, the carrier tape 50 can be transported at an accurate pitch by absorbing variations in the pin spacing of the sprocket 472. As a result, it is possible to prevent the variation of the sprocket 472 from affecting the positional deviation amount of the pocket 51, and to suppress the positional deviation within a small range in advance. Accordingly, for example, it is possible to prevent the maximum value of the positional deviation amount from becoming too large, and to make the positional deviation correction based on the intermediate value between the maximum value and the minimum value more effective. it can.

[2. Second Embodiment]
Next, the electronic component transport apparatus 1 and the taping unit 47 according to the second embodiment will be described with reference to FIGS. 11 and 12. In the second embodiment, only differences from the first embodiment will be described, and the same parts as those in the first embodiment will be denoted by the same reference numerals and detailed description thereof will be omitted. .

FIG. 11 is a side view showing a schematic configuration of the taping unit 47 and the mark applying means. FIG. 12 is a schematic diagram showing a positional deviation between the center position P1 of the pocket 51 and the stop position P of the holding means.

In the first embodiment, the configuration in which the hole 511 is formed in the bottom surface 510 of the pocket 51 of the carrier tape 50 in the position correction operation has been described. However, in the second embodiment, the length of each pocket 51 in the position correction operation is described. A configuration in which a pair of holes 512 and 512 are opened in the connecting region 52 on both ends in the direction will be described.

In the first embodiment, the pin member 479 has a single cone-shaped needle portion 479b. On the other hand, in the second embodiment, the pin member 479 includes a pair of needle portions 479c and 479c that protrude from the distal end of the base end portion 479a on the column and extend in two branches. The pair of needle portions 479c, 479c is a flat blade with a thin wall and a sharp tip, and is substantially rectangular when viewed from both side surfaces of the base end portion 479a. The pair of needle portions 479c and 479c are arranged in parallel to each other and spaced from each other. The interval is set to be slightly larger than the length of one pocket of the carrier tape 50 in the longitudinal direction.

As in the first embodiment, the pin member 479 is used by removing the suction nozzle 31 of the holding means 3 from the support portion 32 and attaching the base end portion 479a of the pin member 479 to the support portion 32 instead. At this time, the pair of needle portions 479 c and 479 c are attached to the support portion 32 so that the flat blades are parallel to the width direction of the carrier tape 50.

The tape feed controller 477a moves the carrier tape 50 so that the bottom surface 510 of the pocket 51a is located at the stop position P, as in the first embodiment. The elevation control unit 477b lowers the pin member 479 toward the bottom surface 510 of the pocket 51a of the carrier tape 50. Here, in the second embodiment, as described above, the distance between the pair of needle portions 479c, 479c of the pin member 479 is set to be slightly larger than the length of the pocket 51a in the longitudinal direction. Therefore, the tip ends of the pair of needle portions 479c and 479c come into contact with and penetrate the surface of the connecting region 52 on both ends of the pocket 51a to form a pair of holes 512 and 512. Since the pair of needle portions 479c and 479c are each in the shape of a flat blade, a substantially rectangular hole is formed in the connecting region 52.

The camera control unit 477c causes the camera 474 to photograph the pocket 51a located at the photographing point C including the connecting regions 52 on both ends in the longitudinal direction.

The image processing unit 477d analyzes the image data of the photographing point C acquired by the camera 474, and specifies the center position P1 of the pocket 51a and the barycentric coordinates of the pair of holes 512 and 512, that is, the center position P2. The image processing unit 477d further detects an intermediate position P3 of a line connecting the center positions P2 of the pair of holes 512 and 512.

The pair of holes 512 and 512 are formed by a pair of needle portions 479 c and 479 c attached to the holding means 3 instead of the suction nozzle 31. Accordingly, as shown in FIG. 12A, an intermediate position P3 between the pair of holes 512 and 512 indicates a stop position P of the holding unit 3. Therefore, the displacement detection unit 477e compares the intermediate position P3 of the pair of holes 512 and 512 with the center position P1 of the pocket 51a, as shown in FIGS. 12B and 12C. The positional deviation amount in the direction and the Y direction can be detected.

Similarly to the first embodiment, the deviation detection unit 477e acquires the positional deviation amounts for the plurality of pockets 51a to 51e, and the correction amount calculation unit 477g calculates the maximum value and the minimum value from the obtained plural positional deviation amounts. Is selected, an intermediate value thereof is calculated, and a deviation correction amount is determined from the intermediate value. Then, deviation correction is performed in the correction control unit.

As described above, in the second embodiment, the pair of holes 512 and 512 are opened in the connecting region 52 on both ends in the longitudinal direction of the pocket 51 using the pair of needle portions 479c and 479c. Depending on the type of the carrier tape 50, there is one in which a negative pressure supply hole is provided through the bottom surface 510 of the pocket 51. The position of the accommodated electronic component D is fixed by supplying a negative pressure. When a hole is formed in the bottom surface 510 of the pocket 51, it may overlap with the negative pressure supply hole, and the hole may not act as a mark indicating the stop position P of the holding means. In such a type of carrier tape 50, by forming a hole in the connecting region 52 of the pocket 51, it is possible to detect a positional shift without being obstructed by the negative pressure supply hole.

[3. Other Embodiments]
(1) Although the embodiment of the present invention has been described above, this embodiment is presented as an example, and is not intended to limit the scope of the invention. The novel embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. And this embodiment and its deformation | transformation are included in the invention described in the claim, and its equivalent range while being included in the range and summary of invention.

(2) For example, in the above-described embodiment, the case where various process processing mechanisms 41 to 49 are arranged on one turntable 21 is described as an example. However, the transport mechanism may be a linear transport system, A plurality of turntables 21 may constitute one transport path. Further, as the holding means 3, instead of the suction nozzle 31 for sucking and releasing the electronic component by generating and breaking a vacuum, an electrostatic chucking method, a Bernoulli chuck method, or a chuck mechanism for mechanically holding the electronic component D is arranged. May be. Further, the various process processing mechanisms 41 to 49 are not limited to the types described above, and can be replaced with various process processing mechanisms, and the arrangement order can be changed as appropriate.

(3) For example, in the above-described embodiment, the suction nozzle 31 is removed from the holding means 3 and the pin member 479 is attached instead of the holding means 3 in the position correction operation. For example, the base end portion of the pin member 479 is formed in a hollow cylindrical shape so as to be fitted on the outer periphery of the suction nozzle, so that the position correction operation can be performed without removing the suction nozzle.

(4) In the first embodiment, a hole is formed in the bottom surface 510 of the pocket 51 of the carrier tape 50 with a conical needle portion having a sharp tip, but the flat blade-like needle portion used in the second embodiment is used. May be used. Similarly, in the second embodiment, a hole is formed in the connecting region 52 of the pocket 51 with a flat sword-shaped needle portion, but a conical needle portion used in the first embodiment may be used.

(5) In the above-described embodiment, a hole is used as the mark indicating the stop position P of the holding means, but the outline is clear and a hole is used. Can be used. For example, the carrier tape 50 may be indented using the suction nozzle itself, and the indentation may be used as a mark. Alternatively, a stamp containing ink may be attached to the holding means, and a colored mark may be attached to the carrier tape 50.

(6) When the positional relationship between the camera 474 and the stop position P is accurately fixed, the position when the suction nozzle 31 reaches the stop position P of the taping unit 47 is stored in the main storage device in advance. In addition, by performing position adjustment so that the camera 474 is disposed on the extended line in the longitudinal direction of the carrier tape 50 from this position, it is possible to omit the mark application processing such as holes. In the above-described embodiment, in particular, since the variation in the interval between the sprockets 472 is corrected, the time required for adjusting the position of the camera position with the stop position P can also be reduced.

DESCRIPTION OF SYMBOLS 1 Electronic component conveying apparatus 21 Turntable 22 Direct drive motor 3 Holding means 31 Adsorption nozzle 32 Support part 33 Drive part 34 Operation rod 41 Parts feeder 42 Marking unit 43 Appearance inspection unit 44 Test contact unit 45 Classification sort unit 46 Attitude correction unit 47 Taping unit 50 Carrier tape 51, 51a, 51b, 51c, 51d, 51e Pocket 52 Connection region 471 Guide rail 472 Sprocket 473 Drive motor 474 Camera 475 Screw adjuster 476 Compression spring 477 Control unit 477a Tape feed control unit 477b Elevation control unit 477c Camera Control unit 477d Image processing unit 477e Deviation detection unit 477f Display unit 477g Correction amount calculation unit 477h Correction control unit 477i Input device 479 Pin member 479a Base end portion 479b Needle portion 479c Pair of needle portions 510 Bottom surface 511 Hole 512 Pair of holes D Electronic component C Shooting point G Position shift P Stop position P1 Pocket center position P2 Hole center position P3 Middle of the pair of holes Position Tp Pocket image

Claims (22)

1. An electronic component transport apparatus that performs process processing while transporting an electronic component,
   A transport path of the electronic component;
   Holding means for holding the electronic component and intermittently moving along the conveyance path;
   A taping unit which is arranged at a stop position of the holding means in the transport path and which accommodates the electronic component held by the holding means in a carrier tape in which a plurality of pockets are arranged in the longitudinal direction and transports it on the transport path; Have
   The taping unit is
   Pocket position detecting means for detecting a pocket position of the carrier tape;
   A deviation detecting means for detecting a positional deviation amount of the pocket position with respect to the stop position based on a detection result by the pocket position detecting means;
   An electronic component transport apparatus comprising: correction means for correcting a positional shift of the carrier tape based on an intermediate value between a maximum value and a minimum value of a positional shift amount detected for a plurality of pockets.
2. The taping unit is
   2. The electronic component conveying apparatus according to claim 1, further comprising mark applying means for applying a mark indicating a stop position of the holding means with respect to the pocket to the carrier tape.
3. The mark applying means includes a pin member attached to the holding means,
   3. The electronic component conveying apparatus according to claim 2, wherein the mark indicating the stop position of the holding means is a hole formed in the carrier tape by the pin member.
4. 4. The electronic component carrying apparatus according to claim 2, wherein a mark indicating a stop position of the holding means is provided on a bottom surface of a pocket of the carrier tape.
5. 4. The electronic component conveying apparatus according to claim 2, wherein a mark indicating a stop position of the holding means is provided in a connecting region connecting the pockets of the carrier tape.
6. 6. The electronic component carrying device according to claim 5, wherein the pin member includes a pair of needles spaced apart so as to open a pair of holes in a connecting region on both ends in the longitudinal direction of the pocket of the carrier tape. apparatus.
7. The pocket position detecting means detects a center position of the pocket;
   6. The electronic component conveying apparatus according to claim 1, wherein the deviation detecting unit detects a positional deviation amount with respect to a mark indicating a stop position of the holding unit at a center position of the pocket. .
8. The pocket position detecting means detects a center position of the pocket;
   The electronic component transport apparatus according to claim 6, wherein the shift detection unit detects a shift amount of a center position of the pocket with respect to an intermediate position of the pair of holes.
9. The taping unit is
   A sprocket provided with a plurality of pins that engage with the carrier tape and transfer the carrier tape;
   Drive means for rotating the sprocket;
   9. The apparatus according to claim 1, further comprising control means for controlling the driving means so as to increase or decrease the amount of rotation of the sprocket according to a difference in distance between the pins of the sprocket. The electronic component conveying apparatus according to the item.
10. The correction means includes
    A sprocket for transferring the carrier tape;
    The electronic component transport apparatus according to any one of claims 1 to 9, further comprising a driving unit that rotates the sprocket by an amount corresponding to a positional shift in a longitudinal direction of the carrier tape.
11. The correction means includes
    A sprocket for transferring the carrier tape;
    10. The electronic component conveying apparatus according to claim 1, further comprising a micrometer that moves the sprocket by an amount corresponding to a positional deviation in the width direction of the carrier tape.
12. The electronic component is held at a stop position of a holding unit that intermittently moves along the conveyance path and the electronic component held by the holding unit is accommodated in a carrier tape in which a plurality of pockets are arranged in the longitudinal direction. A taping unit for transferring on a transfer path,
    Pocket position detecting means for detecting a pocket position of the carrier tape;
    A deviation detecting means for detecting a positional deviation amount of the pocket position with respect to the stop position based on a detection result by the pocket position detecting means;
    A taping unit comprising: a correction unit that corrects the positional deviation of the carrier tape based on an intermediate value between a maximum value and a minimum value of the positional deviation amounts detected for a plurality of pockets.
13. 13. The taping unit according to claim 12, further comprising mark applying means for applying a mark indicating a stop position of the holding means with respect to the pocket.
14. The mark applying means includes a pin member attached to the holding means,
    14. The taping unit according to claim 13, wherein the mark indicating the stop position of the holding means is a hole formed in the carrier tape by the pin member.
15. 15. The taping unit according to claim 13, wherein a mark indicating a stop position of the holding means is provided on a bottom surface of the pocket of the carrier tape.
16. The taping unit according to claim 13 or 14, wherein a mark indicating a stop position of the holding means is given to a connecting region connecting the pockets of the carrier tape.
17. The taping unit according to claim 16, wherein the pin member includes a pair of needles that are spaced apart so as to open a pair of holes in a connecting region on both ends in the longitudinal direction of the pocket of the carrier tape.
18. The pocket position detecting means detects a center position of the pocket;
    The taping unit according to any one of claims 12 to 16, wherein the deviation detecting means detects a positional deviation amount with respect to a mark indicating a stop position of the holding means at a center position of the pocket.
19. The pocket position detecting means detects a center position of the pocket;
    18. The taping unit according to claim 17, wherein the displacement detection unit detects a displacement amount of a center position of the pocket with respect to an intermediate position of the pair of holes.
20. A sprocket provided with a plurality of pins that engage with the carrier tape and transfer the carrier tape;
    Drive means for rotating the sprocket;
    The control device according to any one of claims 12 to 19, further comprising control means for controlling the driving means so as to increase or decrease the amount of rotation of the sprocket according to a difference in distance between the pins of the sprocket. The taping unit described in the item.
21. The correction means includes
    A sprocket for transferring the carrier tape;
    The taping unit according to any one of claims 12 to 20, further comprising driving means for rotating the sprocket by an amount corresponding to a positional deviation in a longitudinal direction of the carrier tape.
22. The correction means includes
    A sprocket for transferring the carrier tape;
    The taping unit according to any one of claims 12 to 20, further comprising a micrometer that moves the sprocket by an amount corresponding to a positional deviation in a width direction of the carrier tape.
    
    

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