CN110063095B

CN110063095B - Component mounting machine

Info

Publication number: CN110063095B
Application number: CN201680091452.2A
Authority: CN
Inventors: 今西聪; 宫岛崇
Original assignee: Fuji Corp
Current assignee: Fuji Corp
Priority date: 2016-12-19
Filing date: 2016-12-19
Publication date: 2021-02-05
Anticipated expiration: 2036-12-19
Also published as: CN110063095A; KR20190097081A; KR102469882B1; JPWO2018116342A1; WO2018116342A1; JP6709295B2

Abstract

A component mounting machine (1) is provided with: a tray placing part for placing a tray on which the components (P) are arrayed; a tray conveying device (50) for conveying the tray conveyed from the tray loading part to the component supply position and conveying the tray conveyed from the component supply position to the tray loading part; and a control device (100) for controlling the tray conveying device (50). A tray conveying device (50) is provided with: an annular conveying belt (53) for placing the tray transferred from the tray placing part on the upper surface; a plurality of conveying rollers (52) which are arranged on the inner side of the conveying belt (53) and rotatably support the conveying belt (53); and a belt driving device (54) for driving the conveying belt (53). In a normal operation, when the tray is not conveyed from the tray placing part to the component supplying position, as a recovery operation, the control device (100) raises the relative height position of the upper surface of the conveying belt (53) relative to the upper surface of the tray placing part compared with that in the normal operation.

Description

Component mounting machine

Technical Field

The present invention relates to a component mounting machine.

Background

Patent document 1 discloses a tray moving device that conveys a tray from a storage containing a plurality of trays to a supply position provided outside the storage.

Prior art documents

Patent document

Patent document 1: japanese laid-open patent publication No. 2006-86483

Disclosure of Invention

Problems to be solved by the invention

In the technique described in patent document 1, the trays are conveyed to the outside of the magazine by belt conveyors provided inside and outside the magazine, and therefore the manufacturing cost rises. On the other hand, when the tray is to be transported from the inside to the outside of the magazine only by the belt conveyor provided outside the magazine, the tray may not be transported to the supply position and the transportation of the tray may be stopped due to friction between the tray and the portion on which the tray is placed, and the efficiency of transporting the tray may be lowered.

The invention aims to provide a component mounting machine capable of efficiently carrying trays.

Means for solving the problems

The component mounting apparatus disclosed in the present specification includes: a tray placing section for placing a tray on which the elements are arrayed; a tray conveying device for conveying the tray transferred from the tray placing part to a component supply position and transferring the tray conveyed from the component supply position to the tray placing part; and a control device for performing control related to the tray conveying device. The tray conveying device is provided with: an endless carrying belt for placing the tray transferred from the tray placing part on an upper surface; a plurality of conveying rollers disposed inside the conveying belt and rotatably supporting the conveying belt; and a belt driving device for driving the conveying belt. In the normal operation, when the tray is not conveyed from the tray placement unit to the component supply position, the control device raises a relative height position of the upper surface of the conveyance belt with respect to the upper surface of the tray placement unit as a return operation, compared to that in the normal operation.

According to the component mounting machine disclosed in the present specification, when the tray is not conveyed from the tray placement portion to the component supply position, the control device performs the return operation, thereby facilitating the conveyance of the tray from the tray placement portion to the component supply position. Thus, the component mounting machine can efficiently carry the tray.

Drawings

Fig. 1 is a schematic view of a component mounting apparatus according to an embodiment of the present invention.

Fig. 2 is a schematic configuration diagram of the tray lifting device.

Fig. 3 is a perspective view of the supply tray (empty tray).

Fig. 4 is a plan view of the pallet carrying apparatus.

Fig. 5 is a schematic view of the tray conveying apparatus as viewed from the front, and shows a state in which the to-be-rotated roller is at the same height position as the rotating shaft roller.

Fig. 6 is a block diagram showing the control device.

Fig. 7 is a schematic view of the tray conveying apparatus as viewed from the front, showing a state in which the turn roller is positioned below the turn shaft roller.

Fig. 8 is an enlarged schematic view of a part of the tray conveying apparatus viewed from the front, and shows a state in which the rotated roller is at the same height position as the rotating shaft roller.

Fig. 9 is an enlarged schematic view of a part of the tray conveying apparatus as viewed from the front, and shows a state in which the turn roller is positioned higher than the turn shaft roller.

Detailed Description

(1. Structure of component mounting machine 1)

Hereinafter, embodiments to which the component mounting machine disclosed in the present specification is applied will be described with reference to the drawings. First, an outline of the component mounting apparatus 1 will be described with reference to fig. 1. As shown in fig. 1, the component mounting machine 1 mainly includes a substrate conveying device 10, a component transfer device 20, a tray lifting device 30, a tray conveying device 50, and a control device 100. In each drawing, the tray conveying direction is defined as a Y-axis direction (left-right direction in fig. 1), a direction perpendicular to the Y-axis direction and a horizontal direction (vertical direction to the sheet in fig. 1) is defined as an X-axis direction, and a vertical direction (vertical direction in fig. 1) perpendicular to the X-axis direction and the Y-axis direction is defined as a Z-axis direction.

The substrate transport apparatus 10 feeds the substrate K into the component mounting apparatus 1 and positions the substrate K at a predetermined position. After the mounting of the component P on the substrate K is completed, the substrate conveying apparatus 10 feeds the substrate K out of the component mounting apparatus 1.

The substrate transport apparatus 10 mainly includes a pair of guide rails 11, a pair of belt conveyors 12, and a clamp device 13. The pair of guide rails 11 are arranged parallel to the X-axis direction with a distance substantially equal to the width of the substrate K. The pair of belt conveyors 12 are juxtaposed just below the pair of guide rails 11. The pair of guide rails 11 guide the substrate K in the X-axis direction, and the pair of belt conveyors 12 convey the substrate K to a predetermined position. The clamp device 13 is a device provided between the pair of guide rails 11. The clamping device 13 clamps the substrate K conveyed to a predetermined position, and positions and fixes the substrate K.

The component transfer device 20 picks up the component P placed at the component supply position Pp and mounts the component P on the positioned substrate K. The component transfer device 20 includes a head driving device 21, a moving table 22, a mounting head 23, a plurality of suction nozzles 24, and a board camera 25. The head driving device 21 is configured to be able to move the moving stage 22 in the X-axis direction and the Y-axis direction by a linear motion mechanism. The mounting head 23 is detachably provided to the moving stage 22.

The suction nozzles 24 are nozzles capable of holding the components P by suction, and the plurality of suction nozzles 24 are detachably attached to the mounting head 23. Each suction nozzle 24 is supported relative to the mounting head 23 so as to be rotatable about an axis parallel to the Z axis, and is supported so as to be liftable in the Z axis direction.

Further, a component camera 26 for taking an image of the component P sucked and held by the suction nozzle 24 from below is provided between the component transfer apparatus 20 and the tray conveying apparatus 50. Control device 100 adjusts the direction of component P sucked by suction nozzle 24 by rotating suction nozzle 24 as necessary based on the result of image pickup by component camera 26.

The board camera 25 is an imaging device provided on the mobile station 22. The substrate camera 25 photographs the substrate K positioned and fixed, and the control device 100 recognizes the mounting position of the component P on the substrate K based on the result of the photographing by the substrate camera 25.

The tray lifting device 30 mainly includes an upper housing 31, a lower housing 32, 4 supports 33, a supply tray placement unit 34, and an empty tray table 35. The supply tray Tp on which the components P are arranged can be stacked in the upper case 31, and the empty tray Te from which the components P have been picked can be stacked in the lower case 32. The lower case 32 is disposed below the upper case 31, and 4 support columns 33 are vertically provided at four corners of the inside of the upper case 31 and the lower case 32 disposed vertically.

The supply tray placement unit 34 is a rectangular plate-shaped portion on which the 1 supply tray Tp taken out from the upper case 31 is placed, and is provided inside the upper case 31 so as to be movable in the Z-axis direction along the support column 33. The supply tray Tp is placed on the upper surface of the supply tray placement unit 34 in a state where a part thereof protrudes from the supply tray placement unit 34 toward the tray conveyance device 50 (right side in fig. 1).

The empty tray table 35 is a rectangular plate-like portion on which the empty tray Te conveyed from the tray conveying device 50 is placed, and is provided inside the lower case 32 so as to be movable in the Z-axis direction along the support column 33.

As shown in fig. 2, the tray lifting device 30 further includes 4 supply tray holding portions 36, 4 rotation restricting portions 37, 4 rotation restriction releasing portions 38, 6 empty tray holding portions 39, 4 supply tray holding releasing portions 40, and 6 empty tray holding releasing portions 41.

The 4 supply tray holding portions 36 are mounted to the 4 columns 33 so as to be rotatable about axes parallel to the X-axis direction at the same height position, respectively. On both side surfaces of the supply tray Tp parallel to the X-axis direction, 2 recesses d (see fig. 3) each opening downward are formed, and on the supply tray holding portion 36, a claw portion 36a capable of being inserted into the recess d is formed. The feed tray holding portion 36 holds the feed trays Tp stacked in the upper case 31 by inserting the claw portions 36a into the respective recesses d.

The 4 rotation restricting portions 37 are positioned above the respective supply tray holding portions 36, and are provided so as to be movable in the Z-axis direction along the support columns 33. The rotation restricting portion 37 restricts the rotation of the supply tray holding portion 36 by coming into contact with the supply tray holding portion 36 from above.

The 4 rotation restriction releasing portions 38 are fixed to 2 respective side surfaces of the supply tray placement portion 34 parallel to the X axis direction. The rotation restriction releasing portion 38 is lifted along with the lifting of the supply tray placing portion 34, and the lifted rotation restriction releasing portion 38 contacts the rotation restriction portion 37 from below, thereby pressing up the rotation restriction portion 37. Thereby, the contact state between the rotation restricting portion 37 and the supply tray holding portion 36 is released, and the rotation restriction of the supply tray holding portion 36 by the rotation restricting portion 37 is released.

The 6 empty tray holding portions 39 are provided on the lower surface side of the supply tray placement portion 34, and move up and down in accordance with the up-and-down movement of the supply tray placement portion 34. The empty tray holding portions 39 are attached to both side surfaces parallel to the Y axis direction so as to be rotatable about axes parallel to the Y axis direction. Further, each empty tray holding portion 39 is formed with a claw portion 39a capable of holding an empty tray Te. The empty tray holding portion 39 holds the empty tray Te by supporting a side surface of the empty tray Te parallel to the Y-axis direction from below by 6 claws 39 a.

The supply tray holding/releasing portion 40 is a member located below the supply tray holding portion 36. The supply tray holding/releasing portion 40 is provided movably in the Z-axis direction along the support column 33, and is biased upward by a compression spring 40a disposed below the supply tray holding/releasing portion 40. On the other hand, in the supply tray holding/releasing portion 40, a pin 40b protruding in the Y-axis direction is provided above the compression spring 40 a. The pin 40b abuts against the lower surface of the rotation restriction releasing portion 38 fixed to the supply tray placing portion 34, and restricts the rise of the supply tray holding releasing portion 40 biased by the compression spring 40 a.

When the supply tray placing section 34 is raised, the rotation restriction releasing section 38 and the supply tray holding releasing section 40 are raised accordingly. When the raised supply tray holding release portion 40 abuts on the supply tray holding portion 36 from below, the supply tray holding portion 36 rotates outward of the upper case 31. Thus, the state in which the claw portion 36a is inserted into the recess d of the supply tray Tp is released, and the supply tray holding portion 36 releases the holding of the supply tray Tp. Accordingly, the lowest supply tray Tp held by the supply tray holding portion 36 is placed on the supply tray placing portion 34. When the supply tray holding/releasing portion 40 is lowered, the claw portion 36a is inserted into the recess d of the supply tray Tp above the supply tray Tp held at the lowermost stage, and is returned to the state where the supply tray Tp is held by the supply tray holding portion 36.

The empty tray holding release portion 41 is fixed to the lower case 32. An inclined surface 41a is formed on the upper surface of the empty tray holding/releasing portion 41. The empty tray holding portion 39 is lowered as the supply tray placing portion 34 is lowered, and when the claw portion 39a of the empty tray holding portion 39 abuts against the inclined surface 41a, the empty tray holding portion 39 rotates toward the outside of the lower case 32. Thus, the empty tray holding unit 39 releases the holding of the empty tray Te, and the empty tray Te is placed on the empty tray table 35.

As shown in fig. 4 and 5, the tray conveying device 50 conveys the supply tray Tp in the tray lifting device 30 to the component supply position Pp. Then, the tray conveying device 50 conveys the empty tray Te from the component supply position Pp to the empty tray holding portion 39 in the tray lifting device 30. The tray conveying device 50 mainly includes a device main body 51, a plurality of conveying rollers 52, a pair of conveying belts 53, a belt driving device 54, a rotary motor 55, and a rotary coupling portion 56.

The apparatus main body 51 is disposed between the component transfer apparatus 20 and the tray lifting apparatus 30 (see fig. 1). The plurality of conveyance rollers 52 are supported by the apparatus main body 51 so as to be rotatable about a rotation axis parallel to the X-axis direction. The pair of conveying belts 53 are endless belts wound around the plurality of conveying rollers 52. The belt driving device 54 is a motor that applies a driving force for rotating the conveying belt 53. The belt driving device 54 is connected to 1 of the plurality of conveying rollers 52, that is, the driving roller 52a disposed inside the conveying belt 53 so as to be integrally rotatable. The conveying belt 53 is given a rotational power by a driving roller 52a that is driven to rotate by a belt driving device 54.

The rotation motor 55 is connected to the rotation shaft member 52b1 of the rotation shaft roller 52b disposed inside the conveyance belt 53, which is 1 of the plurality of conveyance rollers 52, so as to be rotatable integrally. The rotary connecting portion 56 is a long member connecting 2 conveying rollers 52 of the plurality of conveying rollers 52 to the inner side of the conveying belt 53. One end of the rotation coupling portion 56 is coupled to the rotation shaft member 52b1 of the rotation shaft roller 52 b. The other end of the rotation coupling portion 56 is coupled to a rotation shaft member 52c1 of the rotated roller 52c disposed at a position separated from the rotation shaft roller 52b inside the conveying belt 53. Thus, when the turning shaft roller 52b is driven to rotate by the rotating motor 55, the turning coupling portion 56 and the turned roller 52c turn around the turning shaft roller 52 b.

As shown in fig. 6, the control device 100 performs overall control related to the operations of the substrate transport device 10, the component transfer device 20, the tray lifting device 30, and the tray transport device 50. The control device 100 includes a belt drive control unit 110, a rotation control unit 120, a tray conveyance determination unit 130, and a return operation execution unit 140.

The belt drive control unit 110 performs drive control of the belt drive device 54 to set the conveyance direction and conveyance speed of the conveyance belt 53. The rotation control unit 120 controls the driving of the rotating motor 55 to control the position of the rotated roller 52 c.

When the rotating shaft member 52c1 of the rotated roller 52c is rotated to the same height as the rotating shaft member 52b1 of the rotating shaft roller 52b, the rotated roller 52c is closest to the tray lifting device 30 (see fig. 4). At this time, the rotated roller 52c enters a region where the supply tray Tp moves as the supply tray placement unit 34 descends, and a portion of the transport belt 53 supported by the rotated roller 52c is in a state of being able to contact the lower surface of the descending supply tray Tp.

On the other hand, when the rotated roller 52c is rotated so that the rotating shaft member 52c1 of the rotated roller 52c is disposed below the rotating shaft member 52b1 of the rotating shaft roller 52b, the rotated roller 52c is retracted to a position where it is separated from the region where the supply tray Tp moves with the lowering of the supply tray placement unit 34 and the region where the empty tray Te moves with the lowering of the empty tray holding unit 39 (see fig. 7).

The tray conveyance determining unit 130 determines whether or not the supply tray Tp conveyed from the inside of the tray lifting and lowering device 30 is conveyed to the component supply position Pp. Then, the tray conveyance determining unit 130 determines whether or not the empty tray Te conveyed from the component supply position Pp is conveyed into the tray lifting device 30.

Here, in the tray conveying apparatus 50, a first sensor 57 capable of detecting the supply tray Tp is provided at a position (right side in fig. 5) closer to the component transfer apparatus 20 than the conveying belt 53 in the apparatus main body 51. When the supply tray Tp is conveyed to the component supply position Pp, the first sensor 57 detects a tray tip portion T1, which is an end of the supply tray Tp facing the tray conveying device 50 (right side in fig. 5) in the Y-axis direction. When the first sensor 57 detects the supply tray Tp, the tray conveyance determining unit 130 determines that the supply tray Tp is conveyed to the component supply position Pp.

Further, the tray lifting and lowering device 30 is provided with a second sensor 58 capable of detecting an empty tray Te. When the empty tray Te is conveyed from the tray conveying device 50 to the empty tray holding portion 39 in the tray lifting device 30, the second sensor 58 detects a tray rear end portion T2, which is an end portion facing the tray lifting device 30 side (left side in fig. 5) among the ends of the supply tray Tp in the Y axis direction. When the second sensor 58 detects an empty tray Te, the tray conveyance determination unit 130 determines that the empty tray Te is conveyed to the empty tray holding unit 39 in the tray lifting device 30.

When the supply tray Tp is conveyed from the tray lifting and lowering device 30 to the component supply position Pp, the return operation executing unit 140 executes the return operation if the tray conveyance determining unit 130 does not determine that the supply tray Tp is conveyed to the component supply position Pp within a predetermined time from the start of driving of the tape driving device 54 (if the supply tray Tp is not detected by the first sensor 57). Further, when the empty tray Te is conveyed from the component supply position Pp into the tray lifting and lowering device 30, the recovery operation executing unit 140 executes the recovery operation if the tray conveyance determining unit 130 does not determine that the empty tray Te is conveyed to the tray lifting and lowering device 30 within a predetermined time from the start of driving of the tape drive device 54 (if the empty tray Te is not detected by the second sensor 58). The details of the restoration operation will be described later.

(2. operation of tray carrying device 50)

(2-1. operation for conveying the supply tray Tp to the component supply position Pp)

Next, the operation of the tray conveying apparatus 50 will be described. First, the operation of the tray conveying device 50 when the supply tray Tp in the tray lifting device 30 is transferred to the tray conveying device 50 will be described. As shown in fig. 5, each time the supply tray Tp is conveyed to the component supply position Pp, the rotation control section 120 rotates the rotated roller 52c to the position where the rotating shaft member 52b1 of the rotated roller 52b is at the same height as the rotating shaft member 52c1 of the rotated roller 52 c. Then, the tray lifting device 30 moves the supply tray placement unit 34 to the lower limit position.

Here, when the supply tray placement unit 34 moves to the lower limit position, the upper surface of the supply tray placement unit 34 is positioned below the upper surface of the portion of the conveying belt 53 supported by the rotating shaft roller 52 b. The rotation control unit 120 controls the drive of the rotation motor 55 so that the rotation shaft member 52c1 of the rotated roller 52c and the rotation shaft member 52b1 of the rotation shaft roller 52b are at the same height position. Thus, the upper surface of the portion of the conveying belt 53 supported by the turning roller 52c (hereinafter referred to as "belt turning portion 53 a") and the upper surface of the portion supported by the turning shaft roller 52b are horizontal, and the upper surface of the belt turning portion 53a is positioned above the upper surface of the supply tray placement portion 34.

When the supply tray placement unit 34 is moved to the lower limit position in this way, the supply tray Tp is in a state in which the tray tip portion T1 is lifted by the belt turning unit 53 a. Thus, a part of the lower surface of the supply tray Tp floats up from the supply tray placement unit 34, and the contact area between the supply tray Tp and the supply tray placement unit 34 is reduced, so that friction generated between the supply tray Tp and the supply tray placement unit 34 can be reduced. Thus, the component mounting apparatus 1 can easily transfer the supply tray Tp from the tray lifting and lowering device 30 to the tray conveying device 50.

In this state, the belt drive control unit 110 controls the drive of the belt drive device 54 to rotate the drive roller 52a so as to rotate the conveyance belt 53 in the clockwise direction shown in fig. 5. Thus, the supply tray Tp placed on the supply tray placement unit 34 is pulled by the conveyance belt 53 and transferred to the tray conveyance device 50.

The supply tray Tp transferred to the tray transfer device 50 is transferred by the rotating transfer belt 53. When the tray leading end portion T1 of the supply tray Tp is detected by the first sensor 57, the tray conveyance determining unit 130 determines that the supply tray Tp is conveyed to the element supply position Pp, and the tape drive control unit 110 stops driving of the tape drive device 54.

(2-2. movement when empty tray Te is conveyed into tray lifting/lowering device 30)

Next, the operation of the tray conveying device 50 when transferring the empty tray Te from the element supply position Pp into the tray lifting device 30 will be described. Each time the empty tray Te is transferred into the tray lifting and lowering device 30, the tray lifting and lowering device 30 moves the empty tray holding portion 39 to the same height position as the supply tray Tp at the time of conveyance of the supply tray Tp and to a position where the empty tray Te can be placed.

The tray conveying device 50 performs drive control of the belt driving device 54 to rotate the conveying belt 53 counterclockwise in fig. 5, and conveys the empty tray Te from the component supply position Pp to the tray lifting device 30 side. Since the upper surface of the tape turning portion 53a is located above the upper surface of the supply tray placement portion 34 as in the case of conveyance of the supply tray Tp, the tray front end portion T1 is lifted upward from the tray rear end portion T2 when the tray rear end portion T2 of the empty tray Te is placed on the empty tray holding portion 39. Accordingly, the contact area between the empty tray Te and the empty tray holding portion 39 can be reduced, and therefore friction generated between the supply tray Tp and the supply tray placement portion 34 can be reduced. Therefore, the tray conveying device 50 can easily transfer the empty tray Te from the tray conveying device 50 into the tray lifting device 30.

When the second sensor 58 detects an empty tray Te, the tray conveyance determining unit 130 determines that the empty tray Te is conveyed into the tray lifting device 30, and the belt drive control unit 110 stops the driving of the belt drive device 54.

(2-3: operation when lowering empty tray holding part 39)

Next, the operation of the tray conveying device 50 when lowering the empty tray holding portion 39 will be described. When the tray conveyance determining unit 130 determines that an empty tray Te is conveyed into the tray lifting/lowering device 30, the control device 100 determines that the empty tray Te is held by the empty tray holding unit 39. Then, the control device 100 moves the empty tray Te to the empty tray table 35 by lowering the empty tray holding portion 39.

Here, at the time when the transfer of the empty tray Te from the tray conveying device 50 to the tray lifting device 30 is completed, the tape turning portion 53a comes into contact with the lower surface of the empty tray Te (see fig. 5). Therefore, even if the empty tray holding portion 39 is lowered in this state, the empty tray Te interferes with the tape rotating portion 53a, and becomes an obstacle when the empty tray Te is moved to the empty tray table 35.

Therefore, as shown in fig. 7, when the tray conveyance determining unit 130 determines that the empty tray Te is conveyed to the empty tray holding unit 39 in the tray lifting and lowering device 30, the rotation control unit 120 controls the drive of the rotation motor 55 to move the rotated roller 52c to the lower side of the rotating shaft roller 52 b. Thus, the rotated roller 52c is retracted to a position where interference with the empty tray Te can be avoided, and therefore the empty tray Te can be lowered.

(2-4. recovery action)

Next, the restoration operation performed by the restoration operation performing unit 140 will be described. As described above, the rotation control unit 120 rotates the rotated roller 52c so that the rotating shaft member 52c1 of the rotated roller 52c has the same height as the rotating shaft member 52b1 of the rotating shaft roller 52b, and performs a normal operation when the supply tray Tp is conveyed from the supply tray placement unit 34 to the tray conveying device 50. At this time, by making the tape rotating portion 53a higher than the upper surface of the supply tray placement portion 34, the contact area between the supply tray Tp and the supply tray placement portion 34 can be reduced, and friction generated between the supply tray Tp and the supply tray placement portion 34 can be reduced.

However, as shown in fig. 8, if the supply tray Tp is deformed so as to protrude toward the lower surface side, the supply tray Tp may not be lifted up with respect to the upper surface of the supply tray placement unit 34, which is a flat surface. In this case, the contact area between the supply tray Tp and the supply tray placement unit 34 cannot be sufficiently reduced, and there is a possibility that the transfer of the supply tray Tp is stopped due to friction with the supply tray placement unit 34. Therefore, the control device 100 executes the return operation when the supply tray Tp is not conveyed to the component supply position within a predetermined time from the start of rotation of the driving roller 52a by the tape driving device 54.

That is, the rotation control unit 120 rotates the rotation shaft member 52c1 of the rotated roller 52c clockwise as viewed in fig. 8 as compared with the normal operation, and performs the return operation. Thus, as shown in fig. 9, the upper surface of the belt turning portion 53a is higher than the upper surface of the portion of the conveying belt 53 supported by the turning shaft roller 52 b. As a result, the tray conveying device 50 can increase the difference in height between the upper surface of the supply tray placement unit 34 and the upper surface of the belt turning unit 53a as compared with the normal operation, and therefore, even when the supply tray Tp is deformed so as to protrude toward the lower surface side, the supply tray Tp can be easily lifted from the supply tray placement unit 34.

In this way, when the return operation execution unit 140 determines that the transfer of the supply tray Tp is stopped, the return operation is executed, thereby facilitating the transfer of the supply tray Tp from the supply tray placement unit 34 to the tray conveying device 50. Thus, the component mounting apparatus 1 can efficiently carry the supply tray Tp by the tray carrying device 50.

Similarly, the control device 100 executes the swing restoring operation when the empty tray Te is not conveyed into the tray lifting device 30 within a predetermined time from the start of rotation of the driving roller 52a by the belt driving device 54. In this way, the tray conveying device 50 performs the return operation when the transfer of the empty tray Te from the tray conveying device 50 into the tray lifting device 30 is stopped, and therefore the transfer of the empty tray Te from the tray conveying device 50 into the tray lifting device 30 can be promoted.

Here, in the process of transferring the supply tray Tp from the supply tray placement unit 34 to the tray conveyance device 50, the tray rear end portion T2 of the supply tray Tp pulled by the conveyance belt 53 is lifted from the supply tray placement unit 34. Therefore, if the height difference between the rotated roller 52c and the rotating shaft roller 52b is excessively increased, the tray rear end portion T2 of the supply tray Tp is greatly jumped accordingly, and thus the components P arranged on the supply tray Tp are easily jumped.

In this regard, as the returning operation, the height dimension when the height position of the carrier tape 53 is raised with respect to the upper surface of the supply tray placement unit 34 is preferably equal to or less than the thickness dimension of the supply tray Tp. Thus, the tray conveying device 50 can prevent the bouncing of the components P arranged on the supply tray Tp when the tray rear end portion T2 of the supply tray Tp floats up from the supply tray placement portion 34, and can facilitate the conveyance of the supply tray Tp.

In the normal operation, the rotation control unit 120 arranges the rotated roller 52c such that the upper surface of the belt rotating unit 53a and the upper surface of the portion supported by the rotating shaft roller 52b are horizontal. Thus, in the component mounting apparatus 1, when the tray rear end portion T2 of the supply tray Tp floats from the supply tray placement unit 34 in the process of transferring the tray from the supply tray placement unit 34 to the component supply position Pp during normal operation, the components P arranged on the supply tray Tp can be prevented from bouncing.

The return operation is performed by the rotation operation of the conveying belt 53 performed when the interference between the conveying belt 53 and the empty tray Te is avoided. Thus, since it is not necessary to separately provide components for performing the return operation, the component mounter 1 can suppress the manufacturing cost of the tray conveying device 50.

In addition, during the return operation, the belt driving device 54 reduces the conveying speed of the conveying belt 53 as compared with that during the normal operation. Thus, in the process of transferring the supply tray Tp from the supply tray placement unit 34 to the tray transfer device 50 and transferring the supply tray Tp to the component supply position Pp, the tray rear end portion T2 of the supply tray Tp can be prevented from being lifted up from the supply tray placement unit 34 by a sudden force. Thus, the tray conveying device 50 can suppress the bouncing of the components P arranged on the supply tray Tp during the return operation.

Then, as a return operation when the supply tray Tp is not conveyed to the component supply position within a predetermined time, the control device 100 sets the conveying speed of the conveying belt 53 to a low speed. Thus, compared to the case where the conveyance speed of the conveyance belt 53 is set to the same speed (low speed) as the return operation in the normal operation, the time required to convey the supply tray Tp to the component supply position Pp in the normal operation can be reduced.

(3. other)

The present invention has been described above based on the above embodiments, but the present invention is not limited to the above embodiments at all, and it can be easily estimated that various modifications and improvements can be made within the scope not departing from the gist of the present invention.

For example, in the above-described embodiment, the case where the supply tray Tp is placed on the supply tray placement unit 34 in a state of being extended from the supply tray placement unit 34 toward the tray conveyance device 50 and the tape turning unit 53a is brought into contact with the lower surface of the extended portion has been described as an example. However, the present invention is not limited to this, and for example, a notch for avoiding interference with the upper surface of the tape turning portion 53a may be provided in the supply tray placement portion 34, and the tape turning portion 53a may be brought into contact with the lower surfaces of the supply tray Tp and the empty tray Te at a position where the notch is provided.

In the above embodiment, the case where the control device 100 performs the restoration operation by increasing the height difference between the tape turning portion 53a and the upper surface of the supply tray placement portion 34 by raising the height position of the tape turning portion 53a more than that during the normal operation has been described. However, without being limited to this, the component mounting machine 1 may raise the relative height position of the tape turning portion 53a with respect to the upper surface of the supply tray placement portion 34 by lowering the supply tray placement portion 34.

(4. Effect)

As described above, the component mounting machine 1 disclosed in the present specification is a component mounting machine 1 including the supply tray placement unit 34 as a tray placement unit on which the supply tray Tp as a tray on which the components P are arranged is placed, the tray conveyance device 50 that conveys the tray conveyed from the tray placement unit to the component supply position and conveys the tray conveyed from the component supply position to the tray placement unit, and the control device 100 that performs control related to the tray conveyance device 50. The tray conveying device 50 includes an endless conveying belt 53 on which the tray transferred from the tray placement unit is placed on the upper surface, a plurality of conveying rollers 52 disposed inside the conveying belt 53 and rotatably supporting the conveying belt 53, and a belt driving device 54 driving the conveying belt 53. In the normal operation, when the tray is not conveyed from the tray placing portion to the component supply position, as the return operation, the control device 100 raises the relative height position of the upper surface of the conveying belt 53 with respect to the upper surface of the tray placing portion, as compared with that in the normal operation.

According to the component mounting apparatus 1, when the tray is not conveyed from the tray placement portion to the component supply position, the control device 100 performs the return operation to facilitate the conveyance of the tray from the tray placement portion to the component supply position. Thus, the component mounting apparatus 1 can efficiently carry the tray.

In the component mounting machine 1 described above, as the return operation, the height dimension when the relative height position of the carrier tape 53 is raised with respect to the tray placement portion is equal to or less than the thickness dimension of the tray. According to the component mounting apparatus 1, it is possible to prevent the relative height position of the upper surface of the carrier tape 53 with respect to the upper surface of the tray placement portion from becoming excessively large during the return operation. As a result, when the tray is transferred from the tray placement portion to the component supply position, the components P arranged on the tray can be prevented from bouncing.

In the component mounting machine 1 described above, the tray conveying device 50 includes: a rotated roller 52c which is 1 of the plurality of conveying rollers 52 and is disposed at a position where it can contact a tray placed on the tray placing portion from the lower surface; a rotation motor 55 provided at a position separated from the rotated roller 52c and applying a rotational driving force around a rotational axis parallel to the rotational axis of the rotated roller 52 c; and a rotation coupling portion 56 for coupling the rotated roller 52c and the rotating motor 55. In the return operation, the control device 100 drives the rotating motor 55 to rotate the rotated roller 52c, thereby raising the height position of the portion of the conveying belt 53 supported by the rotated roller 52c higher than that in the normal operation.

According to the component mounting apparatus 1, when the tray conveying device 50 performs the return operation, the height position of the portion of the conveying belt 53 supported by the rotating roller 52c is raised as compared with that in the normal operation. This facilitates the conveyance of the tray from the tray placement unit to the component supply position, and therefore the component mounter 1 can efficiently convey the tray.

In the component mounting apparatus 1 described above, the component mounting apparatus 1 includes the tray lifting device 30 that lifts and lowers the tray placement portion. The tray conveying device 50 includes a rotary shaft roller 52b, and the rotary shaft roller 52b is 1 conveying roller 52 of the plurality of conveying rollers 52 and is disposed coaxially with the rotation axis of the rotary motor 55. The control device 100 rotates the rotated roller 52c and arranges the rotated roller at a position lower than the rotating shaft roller 52b when the tray placing portion is lifted, thereby retracting the rotated roller 52c to a position where interference with the tray can be avoided.

According to the component mounting apparatus 1, the control device 100 is arranged below the rotating shaft roller 52b, and thus interference between the rotated roller 52c and the tray can be avoided when the tray placing portion is moved up and down. The return operation is performed by the rotation operation of the conveying belt 53 performed when the interference between the conveying belt 53 and the empty tray Te is avoided. Thus, since it is not necessary to separately provide components for performing the return operation, the component mounter 1 can suppress the manufacturing cost of the tray conveying device 50.

In the component mounting machine 1 described above, the rotary shaft roller 52b is provided so that the upper surface of the portion of the conveying belt 53 supported by the rotary shaft roller 52b is higher than the upper surface of the tray placement portion. In the normal operation, the control device 100 arranges the rotated rollers 52c so that the upper surface of the portion of the conveying belt 53 supported by the rotated rollers 52c and the upper surface of the portion supported by the rotating shaft rollers 52b are horizontal. According to the component mounting apparatus 1, when the tray is transferred from the tray placement portion to the component supply position in the normal operation, the components P arranged on the tray can be prevented from bouncing.

In the component mounting machine 1 described above, the control device 100 reduces the conveying speed at which the belt driving device 54 conveys the conveying belt 53 in the return operation, compared to the normal operation. Thus, in the return operation, when the tray is transferred from the tray placement portion to the component supply position, the components P arranged on the tray can be prevented from bouncing. Then, the control device 100 sets the conveying speed of the conveying belt 53 to a low speed as a return operation when the supply tray Tp is not conveyed to the component supply position for a predetermined time. Accordingly, compared to the case where the conveyance speed of the conveyance belt 53 during the normal operation is set to the same speed (low speed) as the return operation, the time required to convey the supply tray Tp to the component supply position during the normal operation can be reduced.

The component mounting apparatus 1 described above includes the first sensor 57 that detects whether or not the tray is conveyed from the tray placement portion to the component supply position. When the first sensor 57 does not detect that the tray is conveyed to the component supply position within a predetermined time from the start of conveyance of the tray placement portion to the component supply position, the control device 100 executes the return operation.

According to the component mounting apparatus 1, the control device 100 can determine whether or not the tray is conveyed to the component supply position, and perform the return operation when the tray is not conveyed to the component supply position within a predetermined time. Thus, the component mounting apparatus 1 can efficiently carry the tray.

In the above-described component mounting machine 1, when the empty tray Te as a tray is not conveyed from the component supply position to the empty tray holding portion 39 as a tray placement portion in the normal operation, the control device 100 raises the relative height position of the upper surface of the conveying belt 53 with respect to the upper surface of the empty tray holding portion 39 as a tray placement portion as a return operation, as compared to that in the normal operation.

According to the component mounting apparatus 1, when the tray is not conveyed from the component supply position to the tray placement portion, the control device 100 performs the return operation, thereby facilitating the conveyance of the tray from the component supply position to the tray placement portion. Thus, the component mounting apparatus 1 can efficiently carry the tray.

The component mounting apparatus 1 described above includes the second sensor 58 that detects whether or not the tray is conveyed from the component supply position to the tray placement portion. When the second sensor does not detect that the tray is conveyed to the tray placement unit within a predetermined time from the start of conveyance from the component supply position to the tray placement unit, the control device 100 performs the return operation.

According to the component mounting apparatus 1, the control device 100 can determine whether or not the tray is conveyed to the tray placing portion, and perform the return operation when the tray is not conveyed to the tray placing portion within a predetermined time. Thus, the component mounting apparatus 1 can efficiently carry the tray.

Description of the reference numerals

1: component mounting machine, 30: tray lifting device, 34: supply tray placement unit (tray placement unit), 39: empty tray holding unit (tray placing unit), 50: tray conveying device, 52: conveyance roller, 52 b: rotary shaft roller, 52 c: rotated roller, 53: conveyance belt, 53 a: belt turning unit (portion of the conveying belt supported by the turning rollers), 54: belt driving device, 55: rotating electric motor, 56: slewing connection section, 57: first sensor, 58: second sensor, 100: control device, P: element, Pp: component supply position, Te: empty tray (tray), Tp: a supply tray (tray).

Claims

1. A component mounting apparatus includes:

a tray placing section for placing a tray on which the elements are arrayed;

a tray conveying device for conveying the tray transferred from the tray placing part to a component supply position and transferring the tray conveyed from the component supply position to the tray placing part; and

a control device for performing control related to the tray conveying device,

the component mounting machine is characterized in that,

the tray conveying device is provided with:

an endless conveyor belt on which the tray transferred from the tray placement unit is placed on an upper surface of the conveyor belt;

a plurality of conveying rollers disposed inside the conveying belt and rotatably supporting the conveying belt; and

a belt driving device for driving the conveying belt,

in the normal operation, when the tray is not conveyed from the tray placement unit to the component supply position, the control device raises a relative height position of the upper surface of the conveyance belt with respect to the upper surface of the tray placement unit as a return operation, compared to that in the normal operation.

2. The component mounting machine according to claim 1,

as the restoring operation, a height dimension when the relative height position of the transport belt is raised with respect to the tray placing portion is equal to or less than a thickness dimension of the tray.

3. The component mounting machine according to claim 1,

the tray conveying device is provided with:

a rotated roller which is one of the plurality of conveying rollers and is disposed at a position where the rotated roller can contact the tray placed on the tray placing portion from the lower surface of the tray;

a rotation motor provided at a position separated from the rotated roller and applying a rotational driving force about a rotational axis parallel to the rotational axis of the rotated roller; and

a rotation coupling portion that couples the roller to be rotated and the rotation motor,

in the return operation, the control device drives the rotating motor to rotate the rotated roller, thereby raising a height position of a portion of the conveying belt supported by the rotated roller, compared to the normal operation.

4. The component mounting machine according to claim 2,

the tray conveying device is provided with:

5. The component mounting machine according to claim 3,

the component mounting machine is provided with a tray lifting device for lifting the tray carrying part,

the tray conveying device includes a rotary shaft roller which is one of the plurality of conveying rollers and is arranged coaxially with a rotation axis of the rotary motor,

the control device rotates the roller to be rotated and is arranged at a position lower than the rotating shaft roller when the tray placing part is lifted, thereby retracting the roller to be rotated to a position where the roller can avoid interference with the tray.

6. The component mounting machine according to claim 4,

7. The component mounting machine according to claim 5,

the rotary shaft roller is arranged in a manner that the upper surface of a part supported by the rotary shaft roller in the conveying belt is higher than the upper surface of the tray carrying part,

in the normal operation, the control device may arrange the rotatable rollers so that an upper surface of a portion of the conveyor belt supported by the rotatable rollers and an upper surface of a portion of the conveyor belt supported by the rotatable shaft rollers are horizontal.

8. The component mounting machine according to claim 6,

9. Component mounting machine according to any one of claims 1 to 8,

in the return operation, the control device reduces a transport speed at which the belt driving device transports the transport belt, as compared with the normal operation.

10. Component mounting machine according to any one of claims 1 to 8,

the component mounting machine is provided with a first sensor for detecting whether the tray is conveyed from the tray placing part to the component supplying position,

the control device executes the return operation when the first sensor does not detect that the tray is conveyed to the component supply position within a predetermined time from the start of conveyance of the tray placement section to the component supply position.

11. Component mounting machine according to any one of claims 1 to 8,

in the normal operation, when the tray is not conveyed from the component supply position to the tray placement portion, the control device raises a relative height position of the upper surface of the conveyance belt with respect to the upper surface of the tray placement portion as the return operation, compared to that in the normal operation.

12. The component mounting machine according to claim 11,

the component mounting machine is provided with a second sensor for detecting whether the tray is conveyed from the component supply position to the tray placing part,

the control device executes the return operation when the second sensor does not detect that the tray is conveyed to the tray mounting portion within a predetermined time from the start of conveyance from the component supply position to the tray mounting portion.