JPH03217086A - Method and device for correcting carrier tape feed of electronic component mounting machine - Google Patents

Abstract

PURPOSE:To enable components to be supplied at a proper position and assembly adjustment of a parts supply unit to be performed easily by allowing image to be detected halfway through the feed of electronic components to a fitting position of a printed circuit board and by changing the amount of feed of a carrier tape by changing the rotary angle of a control lever with this detection signal. CONSTITUTION:An image detector 90 for image-detecting positional deviation regarding the center of an attraction head of electronic components is provided at the middle of a traveling path of the attraction head of a component fitting device 3. Then, a slide block 73 is moved to the side of a roller 761 by a distance matching the amount of compensation of the feed using a control device being based on the detection signal from the image detector 90, up/down stroke of a coupling member 76 is changed, rotary angle of a control lever 78 is changed, and then the amount of feed of the carrier tape is compensated for. In this state, a cam 82 is rotated by one turn and a feed wheel 55 of a tape feeder 52 is subjected to intermittent rotation counterclockwise by one pitch for feeding out the carrier tape.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention is an electronic component mounting machine that mounts electronic components on a printed circuit board, in which a carrier tape holding a large number of electronic components is transferred from a component supply unit to a tape feeder. The present invention relates to a method and an apparatus for correcting the feed of a carrier tape so that the electronic component can be fed to a component mounting device at the correct position when the electronic component is fed out.

(Example) Conventional electronic component mounting machines store a large number of various electronic components to be mounted on printed circuit boards in component supply units provided for each type, and then transfer the components from these component supply units to the component mounting device. The components are supplied and mounted on the printed circuit board using the component mounting device. A large number of electronic components are held on different carrier tapes for each type, and each gear rear tape is held by a separate component supply unit.The carrier tape is fed and positioned by a tape feeder, and the electronic components are removed from the carrier tape. We are trying to receive it with a mounting device. A conventional electronic component mounting machine (hereinafter simply referred to as a mounting machine) is disclosed in, for example, Japanese Patent Laid-Open No. 63-269600. In the mounting machine described in this publication, as shown in FIG. 7 of the publication, positioning is performed by inserting a positioning pin of a positioning member that moves downward in a fixed position into a fed-out carrier tape feed hole.

However, with this method, it is difficult to assemble a large number of component supply units and place them on the supply table of the mounting machine.
Therefore, there are many adjustment factors such as adjustment of the mounting position of each component supply unit, the position of the positioning pin, and the position of the component suction tube of the component mounting device, resulting in the problem that adjustment takes time. Furthermore, once adjusted and installed, it is fixed and it is impossible to make fine adjustments to accommodate errors in the carrier tape.

(C) Problems to be Solved by the Present Invention The problems to be solved by the present invention are, in a carrier tape feed correction method and device for an electronic component mounting machine, by detecting images of components held by suction on a component mounting device. Accurately detects the positional relationship between the suction tube and the parts and adjusts the feeding amount of the tape feeder based on the detection signal, making it possible to feed the parts at the correct position and adjusting the assembly of the parts supply unit 1. It's about making it easier.

(2) Means for Solving the Problems The second invention of the present application has a carrier arb holding a large number of electronic components held by a component supply unit, and a tape feeder feeding out the carrier tape to remove the electronic components from the carrier tape. A method for correcting the feed of a carrier tape in an electronic component mounting machine that takes out a carrier tape and mounts it on a printed circuit board with a component mounting device, the method comprising An operating lever for operating the feed lever is rotatably provided, and an image is detected while the electronic component suctioned and held by the component mounting device is being sent to the mounting position on the printed circuit board, and a detection signal from the image detection is used to control the operating lever. It is configured to change the rotation angle of the feed wheel of the tape feeder, thereby changing the feed distance of the carrier tape.

Another invention of the present application is that a carrier tape holding a large number of electronic components is held by a component supply unit, the carrier tape is fed out by a tape feeder, the electronic components are taken out from the carrier tape, and the electronic components are mounted on a printed circuit board by a component mounting device. A device for correcting the feed of a gear rear tape in an electronic product mounting machine for mounting, the tape feeder being provided with a feed lever for rotating a feed wheel for feeding out the carrier tape, and the tape feeder to the component mounting device. An operating lever for operating the feed lever of the tape feeder is rotatably provided in the vicinity of the parts supply position, and the operating lever is provided with a moving lever that is rotated by a drive device and whose fulcrum moves. , the operating lever and the movable lever are connected by a connecting member so that the engagement position of the connecting member and the movable lever with respect to the fulcrum can be changed;
An image detector for detecting an image of the electronic component is provided in the middle of a feeding path of the electronic component by the component mounting device, and the fulcrum of the moving lever is configured to be changed in accordance with a detection signal of the image detector. There is.

Still another invention of the present application is a tape feeder for a component supply unit that holds a carrier tape holding a large number of electronic components and feeds out the carrier tape to supply electronic components, in which the feeder body has a structure formed on the carrier tape. A feed wheel having a large number of pins that enter into the feed holes, and a take-up reel for winding up the cover tape peeled off from the carrier tape are rotatably provided, and are adjacent to each of the feed wheel and the take-up reel. The feeder body is provided with a radiet wheel mechanism that rotates them in only one direction, and the feeder body is provided with a pair of feed levers that operate the ratchet wheel mechanisms respectively and rotate simultaneously. ing.

(e) Effect In the structure described in item 12, after the electronic component is sucked and held by the component mounting device from the carrier tape fed out by the tape feeder, an image is detected by the image detector while the electronic component is being sent to the mounting position. When the amount of positional deviation of the electronic component with respect to the suction tube is detected by the image detection, the position of the fulcrum of the moving lever is moved based on the detection signal, and the rotation angle of the operating lever is corrected according to the amount of movement of the connecting member.

In this state, when the moving lever is operated by an external drive device, the operating lever is rotated by the corrected rotation angle via the connecting member, and the feed lever of the tape feeder is rotated to feed the carrier tape to the corrected rotation angle. Send out in quantity.

Embodiments Next, embodiments of the present invention will be described with reference to the drawings.

In FIG. 1 and FIG. 2, a mounting machine 1 equipped with an embodiment of the defect supply unit positioning device of the present invention is schematically shown. In the same figure, 2 (2a12b) is the base of the mounting machine, 3 is the component mounting device located approximately at the center of the base 2a in the -L direction, and 4 is located approximately at the center of the upper surface of the base 2a in the horizontal direction. The component mounting device 3 is movably arranged, thereby
5 is a horizontal table (hereinafter referred to as "X table") which is movable in the horizontal direction (in FIG. 1) on the X table 4, and is movable in the vertical direction (in FIG. 1) on the X table 4. a vertical table (hereinafter referred to as Y table) that holds the printed circuit board and moves the printed circuit board vertically with respect to the component mounting device 3;
6 is a supply comparer for printed circuit boards, 7 is a take-out conveyor for printed circuit boards, 10 is a component supply unit positioning device, 50 is a component supply unit according to the present invention, and 70 is a carrier tape feed correction mechanism. 2.The X table 4 and the Y table 5 are of a known structure so as to work together to move the location where the electronic components of the printed circuit board are to be mounted to below the mounting position of the component mounting device. . Furthermore, the component mounting device 3 and the supply and take-out conveyors 6 and 7 are also of known construction.

Therefore, detailed explanations of their structures and operations will be omitted.

A component supply unit positioning device (hereinafter simply referred to as a positioning device) 10 includes a pair of supply tables 20 (20a, 20
b) and a first pair of table transfer mechanisms 30 (
30a, 30b), and a second table transport mechanism 40 that is provided along the edge of the base 2a on the base 2b side and transports the supply tables 20a, 20b to the position of the component mounting device.
and a plurality of component supply units 50 placed on each supply table -1-.

As shown in FIG. 3, each supply table 20 includes a relatively short upper horizontal part 21 and a relatively long lower horizontal part 22 on which the component supply unit 50 is placed.
The cross section including the vertical portion 23 between both horizontal portions is approximately L-shaped. In the supply table 20, two positioning holes 24 are formed in the two horizontal parts 21, spaced apart in the width direction, and four positioning holes 25 are formed in the lower horizontal part 22, spaced apart in the width direction and in the movement direction. The supply table 20 further includes:
As shown in FIG. 3, a positioning block 26 is formed approximately at the center of the vertical portion 23 and protrudes in the same direction as the upper horizontal portion 21. As shown in FIG.

A protrusion 27 that protrudes downward is formed at the tip of the positioning block 26.

Each first table transfer mechanism 30 is slidable on a pair of guide rails 3l that are arranged parallel to each other on the base 2b and extend across the work area A and the evacuation area B, and on each guide rail. A first movable table 32 is movable on the guide rail via a slider portion 321 guided by the first movable table 32, and a first movable table 32 is attached to the base 2b in the middle of both guide rails 31 and moves along the guide rail in the work area. A rodless cylinder 33 extending between A and a retraction area B;
A mounting plate 34 is provided on the movable table 32 so as to be movable up and down. The movable table 32 is fixed to a connecting member 331 connected to a piston (not shown) of a rodless cylinder 33, and can be moved between the work area and the retreat area by movement of the piston. The mounting plate 34 has a downwardly protruding shaft 341 guided by a guide column 342 attached to the movable base 32 so as to be movable downward.
It is designed to be moved up and down by a cylinder 35.

A positioning pin 36 that enters a positioning hole 25 formed in the supply table is provided on the second surface of the mounting plate 34.

The second transfer mechanism 40 is arranged and fixed in a notch formed along the edge of the base 2a on the base 2b side, and extends over the working area of the two first transfer mechanisms. support body 41
, an upper guide rail 42 provided on the upper edge of the support 41 along its entire length, and a lateral guide rail fixed to the surface of the support 41 on the base 2b side and extending over its entire length. 43 and upper and side guide rails 4
2 and 43, respectively, and a second movable base 44 that is movably guided with respect to its guide rails via slider parts 441 and 442 that are slidably guided.

The movable base 44 has a substantially inverted L shape having a horizontal portion 443 and a vertical portion 444, one slider portion 441 is fixed to the lower side of the horizontal portion 443, and the other slider portion 442 is fixed to the vertical portion 444. ing. Two positioning pins 45 (FIG. 3) that enter the positioning holes 24 of the supply table 20 are attached to the horizontal bar 443 so as to protrude upward.

As shown in FIG. 3, approximately in the center of the vertical portion 444,
An inverted trapezoidal hole 445 is formed which is wide on two sides and has a lower width that approximately matches the width of the block 26 of the supply table 20. A pair of blocks 4B are further fixed to the surface of the vertical portion 444 on the side of the support body 41 so as to be separated from each other in the width direction of the movable base, and each block 46 has a screw hole formed therein. A screw shaft 47 is screwed into the screw hole of the block 46 and is arranged in parallel over the entire length of the support body 41 . This screw shaft 4
7 is rotated by a motor (not shown), such as a step motor, whose rotation angle can be freely controlled, thereby making it possible to move it along the support of the second movable table 44.

A plurality of component supply units 50 are arranged side by side on the lower horizontal portion 22 of each supply table 20 in the width direction of the supply table (in a direction substantially perpendicular to the direction of movement between the work area and the retreat area). One component supply unit stores electronic components of the same type, and different component supply units store a large number of different types of electronic components, so that they can be supplied one by one. What kind of electronic components are stored in which component supply unit (for example, the nth component supply unit from the right in Figure 1) is determined in advance by the combination of control devices that control the entire device. remembered. Furthermore, this parts supply unit itself is
As shown in FIG. 6, an electronic component m is placed in a number of pockets p formed in a carrier tape, and a cover tape d is bonded and held on top of the carrier tape. Reel 51 as shown
The carrier tape L is sequentially pulled out from the reel via the tape feeder 52, and the parts are taken out and supplied. A large number of feed holes h are formed in the carrier tape L at regular intervals.

In FIG. 4, the tape feeder 52 includes a wooden body 53 common to the main body of the parts supply unit, a shaft 54 rotatably supported at the front end of the main body 53 (the left end in FIG. 4), and a shaft 54 fixed to the shaft 54. A feed wheel 55 is provided with a feed pin 551 on its outer periphery that is inserted into the feed hole h of the carrier tape t, a ratchet gear 56 is fixed to the shaft 54, and the relative relationship between the feed wheel and the ratchet gear with respect to the shaft 54 is a feed gear 57 rotatably provided at the rear of the main body 53; a shaft 58 rotatably supported at the rear of the main body 53; a take-up reel 59 for winding the cover tape fixed to the shaft 58; The feed gear 61 includes a ratchet gear 60 and a feed gear 61 rotatably provided on the shaft 58 adjacent to the ratchet gear 60.

Each feed gear 57 and 6l has a ratchet gear 5.
Pawls 571 and 611 are constantly pressed in the direction of engagement with teeth 6 and 60 and rotate the ratchet gear in only one direction (in FIG. 4, ratchet gear 56 is counterclockwise and ratchet gear 60 is clockwise). installed. The tape feeder 52 further includes a first feed lever 63 that is rotatably attached to the main body on a fulcrum 62 and has teeth 631 at its tip that mesh with the feed gear 57; It is provided with a second feed lever 65 which is removably attached and has teeth 651 formed at its tip to mesh with the feed gear 61. Feed lever 6
3 and 65 are connected by a link 66 so as to rotate simultaneously. The reel 5l is rotatably attached to the main body, and the carrier tape t pulled out from the reel is pulled out toward the feed wheel 55 through a guide passage 67, and the cover tape d peeled off from the carrier tape is passed through the guide plate 68. After being peeled off, it is wound up by a take-up reel 59.

7 and 8, the feed correction mechanism 70 is horizontally fixed to a frame 71 fixed relative to the base 2a above the supply position C where the tape feeder 52 is positioned relative to the component mounting device 3. 16 A guide rail 72 extending parallel to the direction of extension of the tape feeder, a slide block 73 movably guided by the guide rail 72, and the slide block 73
A moving lever 75 rotatably supported by a support shaft 74
The elongated hole 75 of the moving lever 75 is supported on the frame 7l adjacent to the guide rail 72 so as to be movable up and down.
A connecting member 76 to which a roller 761 housed in the frame 71 is attached, and a supporting shaft 77 fixed on the F side of the frame 71.
The operating lever 78 is rotatably supported on the top and one end 781 is connected to the lower end of the connecting member 76, and the operating lever 78 is rotatably supported on the fixed support shaft 80 and has a long hole in the tip of the moving lever 75. and a drive lever 81 to which a roller 811 guided in 751 is attached. Drive lever 8
1, a roller 812 attached approximately in the middle thereof engages with the cam surface of a cam 82 rotated by a motor or the like, and swings as the cam rotates.

A rack 84 is fixed to the side of the slide block 73 as shown in FIG.
It meshes with a pinion 86 that is rotated by a motor 85, such as a stepping motor, that is attached to a motor 85 and whose rotation angle can be freely controlled. Therefore, the slide block can be moved by rotation of the motor.

In the middle of the moving path of the suction head 3a of the component mounting device 3, there is an image detection system with a known structure for image-detecting the positional deviation of the electronic component sucked and held by the suction head with respect to the center of the suction head (the center of the suction tube). A container 90 is provided.

In the apparatus configured as described above, when the component supply unit does not need to be sent to the position of the component mounting device 3, the supply table 2
0 is in the retraction area B as shown by the two-dot chain line in FIG. At this time, the supply table 20 of the first table transfer mechanism 30 is placed on the mounting plate 34 with the positioning pin 36 inserted into the positioning hole 25. At this time, the mounting plate is moved by the cylinder 35 as shown in FIG.
It may be raised to the second raised position or lowered to the lowered position.

Next, when sending one of the component supply units 50 mounted on one of the supply tables, for example, the supply table 20a on the right side in FIG. (If the mounting plate is lowered in the area, hold it in the raised position and lift it up) Rodless cylinder 3
3 to move the first movable table 32 of the first table transfer mechanism 30a toward the left side in FIG. 2 to the work area A. When the supply table 20a reaches a predetermined position in the work area, the positioning block 26 of the supply table enters the hole 445 formed in the second movable base 44 of the second table transfer mechanism 40. Then, the cylinder 35 operates to lower the mounting plate 34. Therefore, -4 of the mounting plate
] The supply table 20a riding on the table also lowers, but at this time, the positioning block 26 descends within the hole 445, so the positioning block 26 is positioned by the action of the inverted trapezoidal hole 445, and the supply table is thereby moved to the second movable position. Positioning is performed with respect to the stand 44. At the same time, movable platform 4
When the positioning pin 45 of No. 4 enters the hole 24 of the supply table and the lower surface 28 of the positioning block 26 is in contact with the lower edge 446 of the hole 445, the protrusion 2719 at the tip is caught on the vertical part 444, and the supply table 20a is moved to the second position. It is completely supported by a movable platform 44. Next, the screw shaft 47 rotates and the movable base 44 moves to the left in FIG. 1 relative to the position of the component mounting device 3. The amount of movement of the movable base is determined by the component supply unit 50 storing the desired electronic components.
This is the distance at which the tape feeder 52 of the component placement device 3 just arrives at the supply position C of the component to the component mounting device 3, and such movement amount control is based on the type of component and its component stored in the computer of the control device for the entire device. It is controlled by its controller based on the position of the parts supply unit that stores the parts.

To return the supply table 20a to the evacuation area B, use the screw shaft 4
7 in the opposite direction so that the hole 25 of the supply table is aligned with the mounting plate 34.
The second movable base 44 is moved to a position aligned with the upper positioning pin 36. When the supply table 20a reaches that position, the cylinder 35 operates to raise the mounting plate 34 to the raised position and place the supply table on the mounting plate. At this time, the positioning block 26 moves to the second part of the hole 445, and the positioning pin 45 of the movable base 44 moves to the second part of the hole 445.
Get out of. In this state, the rodless cylinder 33 is operated to move the first movable base 32 to the right side in FIG.
Return to evacuation area B.

When the tape feeder 52 of a predetermined component supply unit 50 is set at the supply position C, the cam 82 rotates once and the drive lever 81 swings back and forth once, thereby moving the moving lever 7
5 also swings back and forth once. As a result, the connecting member 76 connects to the ninth
As shown in the figure, from the support shaft 74 to the rollers 811 and 76
If the distances to 1 are L and e, respectively, and the vertical movement height of the roller 811 by the drive lever is 1-1, then the height h
It moves up and down with a stroke of (h・-7!Xl-1/L). This vertical movement of the connecting member causes the operation lever 78 to rotate once and back, and the other end 782 pushes the end 652 of the second feed lever 65 of the tape feeder 52 in the direction of arrow U. Therefore, the first feed lever 63 is pushed in the direction of the arrow ■,
The feed wheel 5 via the feed gear 57 and the radiet gear 56
Rotate 5 one pitch counterclockwise. In addition, the winding reel 5 is
Rotate 9 one pitch clockwise. therefore,
The carrier tape t is fed out intermittently for one bit, and the force bar tape d is also wound onto the take-up reel. Then, the suction head 3a of the component mounting device 3 descends to suction and hold the electronic component held on the carrier tape, and sends it to a predetermined position on the printed circuit board e to mount it.

The vertical stroke of the connecting member can be reduced by that amount by moving the slide block closer to the rollers 761 and 811.

The pockets p formed in the carrier tape t are originally formed at equal intervals within predetermined tolerances, and the spout holes h are determined to have a predetermined positional relationship with respect to the pockets, but the There are cases where it is on the negative side and cases where it is on the negative side, and changes are particularly likely to occur when the carrier tape is replaced with a new one. Therefore, it is necessary to correct the feed.

Therefore, the positional deviation of the electronic component is image-detected at intermittent stop positions during feeding onto the printed circuit board using the suction head 3a. As shown in FIG. 10, this image detection is performed as shown in FIG.
The positional deviation amounts ΔX and Δy in the X and Y axis directions are detected. The X-axis is the direction in which the carrier tape t is fed out by the tape feeder 52 at the supply position C, and the Y-axis is the direction perpendicular thereto. In the present invention, based on the signal representing the positional deviation amount ΔX in the X-axis direction, the feed amount of the carrier tape is corrected as follows by the control device of the entire apparatus.

In other words, if the positional deviation amount ΔX is, for example, "-" (-), the feed amount of the carrier tape of the component supply unit 50 that supplies the electronic component is reduced by that amount from the next time (
many) need to be done. Therefore, based on the detection signal from the image detector 90, the control device operates the motor 85 to move the slide block 73 toward the roller 761 by a distance commensurate with the feed correction amount, thereby increasing the downward stroke h of the connecting member. and thereby correct the feed amount of the carrier tape. In this state, when the cam 827>{1 rotation, the feed wheel 5 of the tape feeder 52 moves as described above.
5 rotates intermittently one pitch in the counterclockwise direction (in FIG. 4) 23 to feed out the carrier tape, and the take-up reel 59 rotates intermittently one pitch in the clockwise direction to wind up the cover tape d.

In this case, the electronic component m whose image is currently being detected by the image detector 90 is currently located at the component supply unit 50 at the supply position C.
The tape feeder 52 is not necessarily the one that is sent. The problem is that when multiple electronic parts of the same type are sent in succession, they are stopped at the same parts supply unit 1 or its supply position until the supply of the electronic parts is completed.
This is because if only electronic components are sent, a component supply unit holding other types of electronic components is set at the supply position C. Therefore, when the feed correction amount for the component supply unit that supplied the electronic component is calculated by the computer in the control device based on the detection signal from the image detector, the correction amount is calculated for each corresponding component supply unit. Let me remember it.

Next time when electronic components are to be supplied from the component supply unit, when the tape feeder of the component supply unit is set to the supply position, the feed amount of the carrier tape L is determined based on the correction amount stored in Conview 24. Then, the slide block 73 is moved as described in section 2 to correct the feed amount. Therefore, the next time the tape feeder of the component supply unit is set at the supply position C to feed electronic components via the carrier tape, the components can be supplied at the correct position (only in the correct X-axis direction). Such feed amount correction is performed for each component supply unit.

Note that it is preferable to determine the feed correction based on the signal from the image detector by taking the average of a plurality of signals.

(G) Effects According to the present invention, even if a new carrier tape is used, feed correction can be automatically performed, and maintenance can be significantly reduced.

It is also possible to improve the operating rate and yield.

[Brief explanation of drawings]

FIG. 1 is a schematic plan view of a mounting machine equipped with an embodiment of the carrier tape feed correction device of the present invention, FIG. 2 is a side elevational view of the mounting machine of FIG. 1, and FIG. FIG. 4 is a perspective view of the tape feeder of the component supply unit, FIG. 5 is a perspective view of the reel of the component supply unit, and FIG. 6 is a perspective view of the storage of electronic components using a carrier table. Figure 7 is an enlarged view of the carrier tape feed correction mechanism, Figure 8 is a view taken along the line ■1■ in Figure 7,
FIG. 9 is a diagram showing changes in the stroke of the connecting member with respect to the movement of the fulcrum of the moving lever, and FIG. 10 is a diagram illustrating the state of image detection. 1: Mounting machine 2: Base] 0: Supply table positioning device 20: Supply table 30: First table transfer mechanism 40. Second table transfer mechanism 50: Parts supply unit 52: Tape feeder 55: Feed wheels 63, 65: Feed lever 70/carrier tape feed correction mechanism 73: Slide block 75: Movement lever 76: Connection member 78: Operation lever 90: image detector

Claims (3)

[Claims] 1. In an electronic component mounting machine in which a carrier tape holding a large number of electronic components is held by a component supply unit, the carrier tape is fed out by a tape feeder, electronic components are taken out from the carrier tape, and the electronic components are mounted on a printed circuit board by a component mounting device. A method for correcting the feed of a carrier tape, wherein a control lever for operating a feed lever of the tape feeder is rotatably provided near a position where the component is supplied by the tape feeder to the component mounting device. An image is detected while the electronic component suctioned and held by the device is being sent to the mounting position of the printed circuit board, and the rotation angle of the operating lever is changed based on the detection signal from the image detection, thereby controlling the rotation of the feed wheel of the tape feeder. A carrier tape feed correction method characterized by changing the feed amount of the carrier tape by changing the moving angle. 2. In an electronic component mounting machine in which a carrier tape holding a large number of electronic components is held by a component supply unit, the carrier tape is fed out by a tape feeder, electronic components are taken out from the carrier tape, and the electronic components are mounted on a printed circuit board by a component mounting device. A device for correcting the feed of a carrier tape, wherein the tape feeder is provided with a feed lever that rotates a feed wheel that feeds the carrier tape,
An operating lever for operating a feed lever of the tape feeder is rotatably provided near a position where the tape feeder supplies components to the component mounting device, and the operating lever is configured to be rotated by a drive device. a movable lever whose fulcrum is moved by the fulcrum, the operation lever and the movable lever are connected by a connecting member so that the engagement position of the connecting member and the movable lever with respect to the fulcrum can be changed; An image detector for detecting an image of the electronic component is provided in the middle of the electronic component feeding path, and a fulcrum of the moving lever is changed in accordance with a detection signal of the image detector. correction device. 3. In a tape feeder for a component supply unit that holds a carrier tape holding a large number of electronic components and feeds out the carrier tape to supply electronic components, the feeder body has a large number of holes that enter the feed holes formed in the carrier tape. A feed wheel having a pin and a take-up reel for winding up the cover tape peeled off from the carrier tape are each rotatably provided, and are adjacent to each of the feed wheel and the take-up reel to rotate them only in one direction. What is claimed is: 1. A tape feeder characterized in that a ratchet wheel mechanism for operating the ratchet wheel mechanisms is provided, and a pair of feed levers for operating the ratchet wheel mechanisms are provided on the feeder body so as to rotate simultaneously.