JP3006964B2 - Automatic backup pin changer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic backup pin exchanging apparatus, and more particularly, to a backup pin required for supporting a printed circuit board or an unnecessary backup pin position while holding the backup pin in a pin hole of a backup plate. Backup pin automatic replacement device to be set.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 9, for example, a substrate supply apparatus for supplying a printed circuit board, a dispenser for attaching or applying paste-like solder or the like to a predetermined position on the supplied printed circuit board, and a solder for the solder A chip component mounting device that mounts electronic components on a substrate with attached or coated components, a reflow furnace that fixes the mounted electronic components on a printed circuit board, and accommodates a completed board unit with the mounted electronic components fixed. There is a substrate unit manufacturing line including a substrate storage device and the like.

[0003] Among such board unit manufacturing lines, a chip component mounting apparatus for mounting a large number of chip-shaped electronic components such as ICs, resistors, and capacitors on a printed circuit board, and a dispenser for performing pre-processing therefor, etc. Automatically and quickly mount (or apply) chip-like electronic components (or paste-like solder) on the printed circuit board.

FIG. 10 is a front view of the above-mentioned component mounting apparatus, and FIG. 11 is a plan view of the component mounting apparatus with the safety cover removed, and its outline will be described. Component mounting device 1 shown in FIGS. 10 and 11
Reference numeral 0 denotes a case where the printed circuit board 12 is carried in the direction of arrow F from right to left in the figure by two parallel belt conveyors 11 provided at the center of the apparatus base 10a,
The printed board is stopped at a predetermined position by 3 '.

[0005] A pair of left and right fixed bases 14 extending in parallel to a direction (Y direction) perpendicular to the printed board transport direction (X direction) across two belt conveyors 11 on the apparatus base 10a, 14 'are provided, and these fixed bases 14, 14' are provided.
An elongated movable base 15 is supported on the movable base 15 in a state of being extended. A work head 16 for mounting electronic components on the printed circuit board 12 is suspended from the movable table 15.

The work head 16 has two suction nozzles 17 for picking up electronic components from a component cassette (not shown) and mounting them on a board, and a camera for image recognition for determining a mounting position of the electronic components on the printed board 12. 18 is connected to the central control unit of the main unit 10 by connecting the flexible band cord 16a, and power and control signals are supplied from the central control unit via the band cord 16a. The image data indicating the working position is transmitted to the unit.

The moving table 15 includes a Y-axis driving ball screw 14b for transmitting rotation of the Y-axis driving servomotor 14a provided on the fixed table 14 'in both forward and reverse directions and driving thereof, and a Y-axis driven ball screw for the fixed table 14'. 14c slidably moves in the Y direction. A work head 16 suspended on the moving table 15 transmits the X-axis drive servomotor 15a disposed on the moving table 13 in both forward and reverse directions and transmits the X-axis drive servo motor 15a.
It is slidably moved in the X direction by the shaft driving ball screw 15b. As a result, the work head 16 accurately mounts the electronic component at the position of the electronic component on the printed circuit board 12.

In this case, the electronic component cannot be mounted at the correct position unless the printed circuit board is correctly fixed not only at the vertical position but also at the vertical position. For example, in the case of a dispenser that needs to apply paste-like solder at a minimum interval of 0.5 mm, the thickness of the applied solder is also limited, so if the printed board has a slight vertical deflection, it is accurate. Automatic work becomes impossible.

For this reason, there is usually a board vertical position fixing device which is located below the work station (not shown) of the main body device 10 and positions the printed board to be carried in up and down. FIG. 12 (a) shows a plan view thereof, and FIG. 12 (b) shows a side view seen from the transport direction.

The substrate vertical position fixing device includes a backup plate 20 below the two belt conveyors 11.
And an elevator 22 for holding the backup plate 20 from below. A large number of pin holes 20a are provided in the backup plate, and backup pins 21 are inserted and held in appropriate pin holes 20a (in the example of FIG. 1, the state where the backup pins 21 are inserted into the four corners of the backup plate is shown). The elevator 22 moves up and down in the vertical direction indicated by the arrow H in FIG.

FIG. 13 (a) shows a state in which the printed circuit board 12 is carried in above the backup plate 20 and stopped, and the traveling direction and the left and right positions are fixed. FIG. 3B shows that the printed circuit board is fixed by the backup pins 21 inserted and held in the backup plate 20 when the elevator 22 of the above-described board vertical position fixing device is moved upward in the direction indicated by the arrow G in FIG. 12 shows a state in which 12 is supported from below and pressed against the top plate 19 to be fixed.

[0012]

Meanwhile, the printed circuit board 12 includes a type in which electronic components are mounted on only one side and a type in which electronic components are mounted on both sides. When the electronic components are mounted on both sides, the printed circuit board 12 on which a large number of electronic components are mounted on one side (back side) in the preceding processing line is carried in.
To support a printed circuit board that is easily bent by the weight of these mounted electronic components with a backup plate,
In order to support the gap between the mounted electronic component and the electronic component on the lower surface of the printed circuit board (the surface of the substrate on which the electronic component is not mounted) from below, the position of the backup plate corresponding to the position of the substrate on which the electronic component is not mounted should be set. It is necessary to arrange backup pins in advance.

The size of the printed circuit board varies depending on the type. Therefore, when the type of the printed circuit board to be processed changes, it is necessary to replace the backup pin at a position suitable for the size.

If the replacement of the backup pins for this purpose is performed manually, it takes too much time to reduce the work efficiency, and also causes a problem that the backup pins are likely to be misplaced.

For this reason, in recent years, instead of the suction head used for component mounting, a work head for freely gripping / separating the backup pin with a claw that opens and closes is attached to the work head of the component mounting apparatus, and thereby the backup pin is mounted. Automatic replacement is becoming mainstream.

However, even after such replacement is automated, a separate backup pin storage section is required as in the case where the replacement is performed manually, and this has been increasing in recent years. This is a major obstacle in realizing the demand for a smaller device.

In addition, every time the backup pin is replaced, a considerable amount of time is required for the work head to reciprocate between the backup pin replacement position and the storage section, which is a problem of the automatic backup pin replacement work. There is a problem that further increase in efficiency is hindered.

An object of the present invention is to provide an automatic backup pin exchanging device capable of eliminating a replacement backup pin storage section and a reciprocating time between the replacement position and the storage section.

[0019]

SUMMARY OF THE INVENTION According to the present invention, there is provided a printed circuit board for supporting a printed circuit board carried in and stopped at a predetermined position by pressing the printed circuit board from below onto a top plate by a backup pin held by a backup plate. The present invention is applied to a backup pin automatic replacement device that replaces a backup pin of the backup plate with a pin holding device at a position suitable for supporting the backup pin.

First, in the automatic backup pin changing device according to the first aspect of the present invention, the backup pin is held in parallel with the axis of the pin hole on the inner periphery of the cylindrical pin hole which holds the backup pin and passes through the backup plate together with the pin hole. A backup plate having a plurality of grooves, a flange-like overhang having a periphery larger than the inner periphery of the pin hole of the backup plate above the bar-shaped self body, and an inner periphery of the pin hole of the backup plate below the self body. A backup pin having a plurality of pin-shaped projections that can pass up and down in a plurality of grooves provided on the backup plate, and a plurality of pin-shaped projections of the backup pin that grip the backup pin held by the backup plate. If the part is located at a position that does not coincide with the plurality of grooves provided on the inner circumference of the pin hole of the backup plate, The backup pin is rotated to a position where the backup pin does not coincide with the position where the plurality of pin-shaped protrusions of the backup pin coincide with the plurality of grooves of the pin holes of the backup plate. When the rotating part to be rotated and the plurality of pin-shaped projections of the backup pin are located at positions matching the plurality of grooves of the pin holes of the backup plate, the plurality of pin-shaped projections are located on the lower surface of the backup plate. When the plurality of pin-shaped projections are located on the top surface of the backup plate, the backup pins are pulled up so that the plurality of pin-shaped projections are located on the top surface of the backup plate. Lowering the backup pin so that the part is located on the lower surface of the backup plate Composed of the pin holding apparatus having and.

The plurality of grooves of the pin hole of the backup plate are, for example, two grooves positioned in parallel with the axis of the pin hole and symmetrically with the axis of the pin hole. Further, the vertical interval between the flange-shaped overhanging portion and the pin-shaped protrusion of the backup pin is at least equal to or greater than the thickness dimension of the backup plate.

Next, in the automatic backup pin changing device according to the fourth aspect, a plurality of grooves parallel to the axis of the pin hole are opened on the upper side of the backup plate, closed on the lower side, and closed on the lower side of the backup plate. A backup plate with a cylindrical pin hole for holding the backup pin on the periphery, and a bar-shaped self-main body that can pass vertically through multiple grooves provided on the inner periphery of the pin hole of the backup plate in the middle part of the main body A backup pin having a plurality of pin-shaped protrusions, located below the backup plate,
A plurality of pin-shaped protrusions of the backup pin are provided on the inner periphery of the pin hole of the backup plate by contacting a lower portion of the backup pin held by the backup plate and moving up and down a predetermined moving range to raise and lower the backup pin. A lift plate that is vertically positioned in the plurality of grooves provided and positioned on the top surface of the backup plate or at the bottom of the plurality of grooves of the backup plate, and a printed circuit board from among the backup pins raised by the lift plate By moving the plurality of pin-shaped protrusions of the backup pin from a position corresponding to the plurality of groove openings of the pin hole to a position not matching by holding and rotating a backup pin necessary to support On the other hand, a backup pin whose lower part is in contact with the raised lift plate By holding and rotating the backup pin that is unnecessary to support the printed circuit board from the inside and located at a position where the plurality of pin-shaped protrusions do not match the plurality of groove openings of the pin hole, the rotation is performed. A pin gripping device for moving the plurality of pin-shaped protrusions of the backup pin to positions corresponding to the plurality of groove openings of the pin hole.

The plurality of grooves of the pin hole of the backup plate are, for example, two grooves parallel to the axis of the pin hole and symmetrical to the axis of the pin hole.

[0024]

The operation of the means of the present invention is as follows. First, in the backup pin automatic replacement device according to the first aspect, among the backup pins suitable for backing up the printed circuit board, the plurality of pin-shaped protrusions are located on the lower surface of the backup plate, and the backup pin main body is lowered. Is held by the pin holding device and rotated. Thereby, the plurality of pin-shaped protrusions of the backup pin which are located at positions that do not coincide with the plurality of grooves on the inner periphery of the pin hole of the backup plate coincide with the grooves, and the backup pin can be pulled up.

Subsequently, the backup pin is pulled up and rotated. Thereby, the plurality of pin-shaped protrusions of the backup pin pass through the plurality of grooves of the pin hole of the backup plate and rise to a position located on the upper surface of the backup plate, and then reach a position that does not match the groove that has just passed. Rotated. Therefore, the backup pin is fixed to the substrate supporting position so as not to fall.

Among the backup pins which are not suitable for backing up the printed circuit board, those having a plurality of pin-shaped protrusions located on the upper surface of the backup plate and the main body of the backup pin fixed to the upper portion of the backup plate are also pin gripped. It is gripped and rotated by the device. Thereby, the plurality of pin-shaped protrusions of the backup pin which are located at positions that do not coincide with the plurality of grooves on the inner periphery of the pin hole of the backup plate coincide with the grooves, and the backup pin can be lowered.

Subsequently, the backup pin is pulled down until the flange contacts the upper portion of the pin hole of the backup plate. As a result, the backup pin is suspended by its own flange at a position where it does not hinder substrate support.

Next, the backup pin is rotated. As a result, the pin-shaped projection of the backup pin, which has passed through the groove on the inner circumference of the pin hole of the backup plate and lowered to a position below the backup plate due to the lowering, is rotated to a position where the groove 1 does not match. You. Therefore, it is possible to prevent the lowered backup pin from being erroneously raised due to an impact or the like, thereby preventing the support of the substrate.

Next, in the backup pin automatic exchanging device according to the fourth aspect, the backup pin, which has been lowered by the raising and lowering plate rising, comes into contact with the lower part thereof and rises, and is fixed to the upper part of the backup plate. All the backup pins together with the backup pins that have been set are aligned with the substrate support position of the backup plate.

Among the backup pins suitable for supporting a printed circuit board, those having a plurality of pin-shaped protrusions whose positions coincide with the plurality of grooves on the inner periphery of the pin hole (ascending) are pin-holding devices. And the pin-shaped protrusion is rotated so as not to coincide with the groove. As a result, backup pins suitable for supporting the printed circuit board are fixed on the backup plate.

Further, among the backup pins which are not suitable for supporting the printed circuit board, those having a plurality of pin-shaped protrusions whose positions do not match the positions of the plurality of grooves on the inner periphery of the pin hole (the one fixed to the upper portion of the backup plate) ) Is gripped by the pin gripping device, and is rotated so that the pin-shaped protrusions coincide with the grooves. Thereby, the backup pin which is not suitable for supporting the printed circuit board has its lower part abutted on the elevating plate, and following these operations, the elevating plate descends and descends, and is removed from the substrate supporting position of the backup plate. .

[0032]

Embodiments of the present invention will be described below with reference to the drawings. 1A and 1B show the configuration of a backup pin and a backup plate for supporting a printed circuit board according to an embodiment.

FIG. 3A is a plan view, a side view, and a bottom view of the backup pin 1 from above. Backup pin 1
Has a rod-like body, and has a flange-like overhang 1a above the rod-like body,
The lower part has two pin-shaped projections 1b symmetrical to the axis.

FIG. 2B is a partial plan view of the backup plate 2 at the top, and a cross-sectional view taken along the line A-A 'of the partial plan view at the bottom. The backup plate 2 is provided with a large number of pin holding holes 2a.
Two grooves 2b symmetrical to the hole axis and parallel to the hole axis
Is provided.

The rod-like body of the backup pin 1 is slidably fitted in the pin holding hole 2a of the backup plate.
The pin-shaped protrusion 1b of the backup pin 1 is
a slidably fitted in the groove 2b. The diameter of the flange-shaped overhang portion 1 a of the backup pin 1 is sufficiently larger than the diameter of the pin holding hole 2 a of the backup plate 2.

FIG. 2A is a cross-sectional view of the backup pin gripping device 3 and the backup plate 2 in which the backup pin 1 is fitted according to the embodiment from the top, and the backup plate 2 and the bottom surface of the backup plate 1. FIG. The backup pin gripping device 3 is attached to a normal electronic component mounting head, and can be automatically controlled three-dimensionally freely in up, down, left, right, and near sides with an accuracy of several microns.

In the initial stage of disposing the device, the backup pin 1 is fitted in all the pin holding holes 2a of the backup plate 2 as shown in FIG. Backup plate 2 in the state
Is held. Further, the backup pins 1 which are not necessary for supporting the printed circuit board at this time are also held in this state.

At this time, the projecting direction of the pin-shaped projection 1b of the backup pin 1 is perpendicular to the groove 2b of the pin holding hole 2a of the backup plate 2. This prevents unexpected projection of the backup pin 1 so that the backup pin 1 does not unnecessarily protrude above the backup plate 2 due to an impact or the like, thereby obstructing the support of the printed circuit board.

The operation of this embodiment having such a configuration will be described with reference to FIG.
This will be described with reference to FIGS. 3 (a) and 3 (b) and FIGS. 3 (a), 3 (b) and 3 (c). First, the backup pin gripping device 3 detects the backup pin 1 held in the pin holding hole 2a at a position suitable for supporting the printed circuit board based on the design data input in advance, and detects the backup pin detected by the gripping claw 3a. Pin 1
(See FIG. 2A), and the captured backup pin 1 is rotated, for example, 90 degrees counterclockwise. Thereby, the projecting direction (position) of the pin-shaped protrusion 1b of the backup pin 1 is adjusted to the pin holding hole 2 of the backup plate 2.
This corresponds to the direction (position) of the groove 2b of FIG.

Next, the backup pin gripping device 3 pulls up the backup pin 1 upward as indicated by the arrow C in FIG. Thereby, the pin-shaped protrusion 1 of the backup pin 1
b passes through the groove 2b of the pin holding hole 2 of the backup plate 2 and emerges on the upper surface of the backup plate 2 (FIG. 3).
(a)). FIGS. 3A, 3B, and 3C are cross-sectional views of the backup pin gripping device 3 and the backup plate 2 in which the backup pin 1 is fitted. B above the pin-shaped protrusion 1b
The top view which looked down from the part of B 'is shown.

Subsequently, the backup pin gripping device 3
The captured backup pin 1 is again rotated 90 degrees counterclockwise. Thereby, the backup pin 1
Is located at right angles to the position of the groove 2b of the pin holding hole 2a of the backup plate 2 which has now passed upward from the bottom (see FIG. 4B).

Thereafter, the backup pin gripping device 3
Release the grasped backup pin 1. At this time, the backup pin 1 is supported without dropping by the pin-shaped protrusion 1b shifted at right angles to the position of the groove 2b of the pin holding hole 2a, and the upper part of the pin-shaped protrusion 1b is the upper surface of the backup plate 2. Is fixed at
(c)).

The above-described processing of FIGS. 2A to 3C is sequentially repeated for all the backup pins 1 suitable for supporting the printed circuit board.
The arrangement of the backup pins 1 optimal for supporting the printed circuit board is automatically formed thereon.

Subsequently to the above, when processing a printed circuit board having a different arrangement of electronic components on the back surface, among the backup pins 1 that have fallen to the initial arrangement position as being unsuitable for supporting the previous printed circuit board, A process of pulling up a backup pin 1 suitable for supporting a later printed circuit board, and supporting a later printed circuit board among the backup pins 1 which are pulled up above a backup plate 2 and are fixed in position as suitable for supporting a previous printed circuit board. And lowering the backup pin 1 which has become unsuitable.

In this case, the process of pulling up the backup pin 1 suitable for supporting the printed circuit board is exactly the same as the above-described process, and the process of lowering the backup pin 1 which is not suitable for supporting the printed circuit board is the same as the process described above. 3 (c), 3 (b), 3 (a) and 2 (b), 2 (a).

Next, another embodiment will be described with reference to FIGS. FIGS. 4A and 4B show the configuration of a backup pin and a backup plate for supporting a printed circuit board according to another embodiment.

FIG. 5A is a plan view, a side view, and a bottom view of the backup pin 4 from above. Backup pin 4
Has a rod-like body, and has two pin-like projections 4a symmetrical with respect to the axis below the rod-like body. The difference from the backup pin 1 of the above-described embodiment is that there is no flange-shaped overhang.

FIG. 7B shows a backup plate 5 from above.
Is a sectional view taken along the line D-D 'of the partial plan view, and a partial bottom view of the backup plate 5 is shown below. The backup plate 5 also has a large number of pin holding holes 5a.
The inner periphery of each pin holding hole 5a has
Two grooves 5b parallel to the hole axis are provided symmetrically with respect to the hole axis. The upper portions of the two grooves 5 b are open on the upper surface of the backup plate 5. On the other hand, the lower part is closed, and the lower surface of the backup plate 5 forms the bottom of the groove 5b.
The difference from the backup plate 2 of the above-described embodiment is that the lower portions of the two grooves 5b are closed.

The rod-shaped body of the backup pin 4 is slidably fitted in the pin holding hole 5a of the backup plate.
The pin-shaped protrusion 4b of the backup pin 4 is
a is slidably fitted into the groove 5b.

FIG. 5 is a plan view showing a state in which the backup pin 4 is fitted to the backup plate 5 from above, and a plan view of the backup pin gripping device 7 and the backup plate 5 to which the backup pin 4 is fitted. Arrow E
FIG. 9 is a cross-sectional view of a portion from E to E ′ and a cross-sectional view of the lifting plate 6.

The backup pin gripping device 7 is attached to a normal electronic component mounting head, similarly to the backup pin gripping device 3 of the above-described embodiment, and is three-dimensionally attached to the top, bottom, left, right, front and back with a precision of several microns. Automatic control is possible at will. However, the operation is slightly different from that of the backup pin gripping device 3 of the embodiment as described later.

In the initial stage of the installation of the device, the backup pins 4 are fitted into all the pin holding holes 5a of the backup plate 5 as shown in FIG.
The backup pin 4 is positioned below the pin-shaped protrusion 4b by contacting the bottom of the backup plate 5.
Is held by the backup plate 5 in a state of protruding downward. Further, backup pins 5 which are not necessary for supporting the printed circuit board at this time are also held in this state.

At this time, the lifting plate 6 stops slightly away from the bottom of the backup pin 4. The operation of the present embodiment having such a configuration will be described with reference to FIGS.

First, the elevating plate 6 rises upward from the position shown in FIG. 5 as shown by the arrow F and contacts the lower surface of the backup plate 5. Thereby, the backup pin 4
The pin-shaped projection 4a passes through the groove 5b of the pin holding hole 5a of the backup plate 5 and is located on the upper surface of the backup plate 5 (see FIG. 6). 6 is a plan view of the upper portion of the backup pin gripping device 7 of FIG. 6 as viewed from above G to G ′ of the pin-shaped projection 4a of the backup pin 4. The same applies to FIGS. 7 and 8.

Next, the backup pin gripping device 7
Based on the design data input in advance, the backup pin 4 held in the pin holding hole 5a at a position suitable for supporting the printed circuit board is detected, and the backup pin 4 detected by the gripping claw 7a is grasped. The backup pin 4 is rotated, for example, 90 degrees counterclockwise. As a result, the pin-shaped projection 4a of the backup pin 4 comes to be located at right angles to the position of the groove 5b of the pin holding hole 5a of the backup plate 5 that has just passed upward from below (see FIG. 7).

The backup pin gripping device 7 sequentially repeats the above-described processing of detecting, grasping, rotating, and releasing the appropriate backup pin 4 for all the backup pins 4 suitable for supporting the printed circuit board.

Finally, the lifting plate 6 is lowered. At this time, the backup pin 4 is connected to the pin holding hole 5a.
Pin-shaped projection 4a shifted at right angles to the position of the groove 5b
, And is fixed on the upper surface of the backup plate 5 above the pin-shaped protrusion 4a (see FIG. 8).

Thus, the backup plate 5
The arrangement of the backup pins 4 optimal for supporting the printed circuit board is automatically formed thereon. Again, following the above,
In the case of processing a printed circuit board having a different electronic component arrangement on the back surface, among the backup pins 4 descending to the initial arrangement position as being unsuitable for supporting the previous printed circuit board,
The process of raising and fixing the backup pins 4 suitable for supporting the subsequent printed circuit board, and the process of raising and fixing the backup pins 4 raised and fixed on the backup plate 5 as suitable for supporting the previous printed circuit board. A process of lowering the backup pin 4 that has become inappropriate for support.

In this case, the process of raising and fixing the backup pin 4 suitable for supporting the printed circuit board is exactly the same as the above-described process (see FIG. 7). At this time, the process of lowering the backup pin 4 which becomes unsuitable for supporting the printed circuit board is also performed at the same time. That is, the backup pin 4 that is not suitable for supporting the printed circuit board is grasped and rotated 90 degrees counterclockwise. Thus, the projecting position of the pin-shaped projection 4a of the backup pin 4 matches the position of the groove 5b of the pin holding hole 5a of the backup plate 5 (see FIG. 6).

Thus, when the lifting plate 6 is finally lowered, the backup pins 4 suitable for supporting the printed circuit board are raised and fixed, and the backup pins 4 unsuitable for supporting the printed circuit board are lowered. Excluded from location.

[0061]

As described above, according to the present invention, the backup pins are previously held in all the pin holding holes of the backup plate. Therefore, it is necessary to provide a separate backup pin storage for replacement. Therefore, it is possible to realize a demand for downsizing of a device which has been increasing in recent years.

Further, since the backup pin can be properly arranged by merely raising or lowering without replacing the backup pin, the work head does not have to reciprocate between the replacement position and the storage section every time the backup pin is replaced. Therefore, the operation time is shortened, and the efficiency of the backup pin replacement operation can be further increased.

[Brief description of the drawings]

1A is a plan view, a side view, and a bottom view showing a configuration of a backup pin according to an embodiment, and FIG. 1B is a plan view of a backup plate in which the backup pin is fitted and an arrow A showing the plan view thereof. It is sectional drawing cut | disconnected by -A '.

2A is a diagram showing a state of a backup pin and a backup plate in an initial setting state and a configuration of a backup pin holding device 3, and FIG. 2B is a diagram showing a state in which the backup pin is grasped and rotated by 90 degrees.

FIGS. 3A, 3B and 3C are diagrams for explaining the operation of one embodiment.

4A is a plan view, a side view, and a bottom view showing a configuration of a backup pin according to another embodiment, and FIG. 4B is a plan view of a backup plate in which the backup pin is fitted and an arrow indicating the plan view thereof. It is sectional drawing cut | disconnected by DD '.

FIG. 5 is a diagram (part 1) illustrating the configuration and operation of another embodiment.

FIG. 6 is a diagram (part 2) illustrating the configuration and operation of another embodiment.

FIG. 7 is a diagram (part 3) illustrating the configuration and operation of another embodiment.

FIG. 8 is a diagram (part 4) illustrating the configuration and operation of another embodiment.

FIG. 9 is a diagram showing a conventional board unit manufacturing line.

FIG. 10 is a front view of a component mounting apparatus disposed on the board unit manufacturing line.

FIG. 11 is a plan view of the component mounting apparatus with a safety cover removed.

12A is a plan view of a device for fixing the vertical position of a board of a component mounting apparatus, and FIG. 12B is a side view thereof.

13A is a plan view showing a state in which a printed board is stopped above a substrate vertical position fixing device, and FIG. 13B is a side view of the substrate vertical position fixing device and the printed circuit board.

[Explanation of symbols]

 1, 4 backup pin 1a flange-shaped overhang 1b, 4a pin-shaped projection 2, 5 backup plate 2a, 5a pin holding hole 2b, 5b groove 5c groove bottom 3, 7 backup pin gripping device 3a, 7a gripping portion 6 elevating plate

Claims (5)

(57) [Claims] 1. A backup board, which is carried in and stopped at a predetermined position, is supported by a backup pin held on a backup plate by pressing the backup board from below toward a top plate to support the printed board. In a backup pin automatic exchanging device for exchanging a backup pin of a plate by a pin gripping device, the backup plate is parallel to an axis of the pin hole on an inner periphery of a cylindrical pin hole holding the backup pin, and the backup plate together with the pin hole is attached to the backup plate. The backup pin has a plurality of grooves penetrating therethrough, the backup pin has a flange-like overhang having a periphery larger than the inner periphery of the pin hole of the backup plate above the bar-shaped self body, and the backup plate below the self body. Up and down in the multiple grooves provided on the inner circumference of the pin hole of A plurality of pin-shaped projections that can pass therethrough, wherein the pin gripping device grips the backup pin held by the backup plate, and the plurality of pin-shaped projections of the backup pin are the backup plate When the backup pin is located at a position that does not match the plurality of grooves provided on the inner periphery of the pin hole, the backup pin is rotated to the position where the backup pin coincides with the groove. A rotating portion that rotates the backup pin to a position that does not coincide with the plurality of grooves of the plurality of holes of the hole, and a plurality of pin-shaped protrusions of the backup pin coincide with a plurality of grooves of the pin hole of the backup plate; The plurality of pin-shaped protrusions are located on the lower surface of the backup plate. When the plurality of pin-shaped projections are located on the top surface of the backup plate, the backup pins are pulled up so that the plurality of pin-shaped projections are located on the top surface of the backup plate. And an elevating unit for pulling down the backup pin so that the pin-shaped projection is located on the lower surface of the backup plate. 2. The plurality of grooves of the pin hole of the backup plate are two grooves that are positioned in parallel with the axis of the pin hole and symmetrically with the axis of the pin hole.
Automatic backup pin changer as described. 3. The backup pin automatic replacement according to claim 1, wherein an interval between the flange-shaped protrusion and the pin-shaped projection of the backup pin is at least equal to or greater than a thickness dimension of the backup plate. apparatus. 4. A backup board, which is carried in and stopped at a predetermined position, is supported by a backup pin held by a backup plate and pressed against a top plate from below to support the printed board. In a backup pin automatic exchanging device for exchanging a backup pin of a plate by a pin gripping device, the backup plate is parallel to an axis of the pin hole on an inner periphery of a cylindrical pin hole holding the backup pin, and an upper portion is an upper surface of the backup plate. The backup plate has a plurality of grooves which are closed at the bottom and have the bottom face as the bottom surface of the backup plate, and the backup pin is provided on the inner periphery of the pin hole of the backup plate at an intermediate part of the rod-shaped self body. It has a plurality of pin-shaped protrusions that can pass up and down in a plurality of grooves, A plurality of pin-shaped protrusions of the backup pin are located below the backup plate, contacting a lower portion of the backup pin held by the backup plate, moving up and down a predetermined moving range to raise and lower the backup pin. An elevating plate that passes vertically through a plurality of grooves provided on the inner periphery of the pin holes of the backup plate and is located on the upper surface of the backup plate or at the bottom of the plurality of grooves of the backup plate; A plurality of pin-shaped protrusions of the backup pin are formed by holding and rotating a backup pin necessary for supporting the printed circuit board from among the backup pins raised by the elevating plate, thereby opening the plurality of groove openings of the pin hole. From the position that matches the part to the position that does not match, A backup pin in which a plurality of pin-shaped protrusions are located at positions where the plurality of pin-shaped protrusions do not coincide with the plurality of groove openings of the pin holes from among unnecessary backup pins which are in contact with the raised lifting plate at a lower portion and support a printed circuit board; A pin gripper for gripping and rotating the pin to move a plurality of pin-shaped protrusions of the backup pin to a position corresponding to a plurality of groove openings of the pin hole. Automatic backup pin changer. 5. The backup pin according to claim 4, wherein the plurality of grooves of the pin hole of the backup plate are two grooves parallel to the axis of the pin hole and symmetric with respect to the axis of the pin hole. Automatic replacement device.