JPH0878898A - Printed board aligning device - Google Patents

Abstract

PURPOSE: To reduce the procedures for changing the position by permitting the sizes of the aligning member of a printed board to have the same sizes as the board. CONSTITUTION: When the left edge of an engaging lever 35 is pressed down against biasing force of a spring 39, an engaging claw 36 is released from the teeth 38 of a rack part 37. Under such condition, when a moving table 31 is permitted to move along a guide rail 32 with respect to an XY table 3 to a position aligned with a substrate 6, press to the lever 35 is released, the claw 36 is engaged with the teeth 38 and an aligning pin 29 is fixed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed circuit board positioning device for positioning a printed circuit board guided and conveyed by a pair of chutes.

[0002]

2. Description of the Related Art A printed circuit board positioning device of this type is disclosed in Japanese Unexamined Patent Publication No. 4-35100, and a positioning pin is inserted into a hole formed in the printed circuit board to position the printed circuit board. In the seed device, setup change is performed in which the position of the positioning pin, which is a positioning member, can be changed according to the size of the substrate in the carrying direction.

[0003]

However, in the prior art, the positioning member is often screwed to an XY table or the like, and it is necessary to loosen the screw to move the positioning member and screw it. , It was troublesome. Therefore, an object of the present invention is to reduce the time and effort required to change the position of the positioning member of the printed circuit board according to the size of the printed circuit board.

[0004]

Therefore, according to the present invention, a printed board which is guided and conveyed by a pair of chutes is positioned by inserting a positioning pin into a hole formed in the printed board. In a board positioning device, a guide member that guides the movement of the positioning pin in the carrying direction, an engaged portion arranged along the guide member in the carrying direction, and a guided member that moves while being guided by the guide member. An engaging member that engages with the engaged portion for positioning and fixing the positioning pin, and a biasing means that biases the engaging member to engage with the engaged portion are provided. is there.

Further, the present invention provides a printed board positioning device for positioning a printed board guided by a pair of chutes in the carrying direction by engaging positioning members on both end surfaces of the board in the carrying direction. A guide member that guides the movement of the positioning member in the transport direction, an engaged portion that is disposed along the guide member in the transport direction, and the positioning member that is guided and moved by the guide member. An engaging member that engages with the engaged portion for fixing and an urging unit that urges the engaging member to engage with the engaged portion are provided.

Further, according to the present invention, in a printed circuit board positioning device for positioning a printed circuit board guided and conveyed by a pair of chutes by engaging a positioning member with the printed circuit board, the positioning member is moved in the carrying direction. A guide member for guiding the guide member, an engaged portion arranged along the guide member in the conveying direction, and the engaged portion for positioning and fixing the engaging member moved by being guided by the guide member. An engaging member that engages with the engaging member, an urging member that urges the engaging member to engage the engaged member, and an urging member that releases the urging of the urging member. Releasing means for releasing the engagement with the engaged member, and moving means for moving the positioning member along the guide member while releasing the engagement of the engaging member with the engaged member by the releasing means. And are provided.

Further, according to the present invention, in a printed circuit board positioning device for positioning a printed circuit board guided and conveyed by a pair of chutes provided on a table, the positioning member is engaged with the printed circuit board. A guide member formed on the table for guiding the movement in the transport direction, an engaged portion arranged along the guide member in the transport direction, and moved by being guided by the guide member. An engaging member that engages with the engaged portion for positioning and fixing the engaged member, an urging means that urges the engaging member to engage with the engaged member, and Release means for releasing the bias of the biasing means to release the engagement of the engaging member with the engaged member, and the release of the engagement of the engaging member with the engaged member by the releasing means Move the table in the transport direction. Is provided with a a table moving means for moving along said positioning member to the guide member by.

[0008]

According to the structure of the first aspect, the positioning pin that is moved by being guided by the guide member by the engaging member engaging the engaged portion by the urging of the urging means is positioned and fixed. According to the structure of claim 2, the positioning member is positioned and fixed by the urging of the urging means so that the engaging member engages with the engaged member and is guided by the guide member to move.

According to the structure of claim 3, the moving means moves the positioning member along the guide member while the releasing means is releasing the engagement of the engaging member with the engaged member by the urging of the urging means. Let According to the structure of claim 4, the table moving means moves the table in the direction in which the printed circuit board is conveyed while the releasing means is releasing the engagement of the engaging member with the engaged member by the urging of the urging means. The positioning member is moved along the guide means.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. In FIG. 2 and FIG. 3, reference numeral 1 denotes a Y table which moves in the Y direction by rotation of the Y axis motor 2, and 3 indicates movement in the X direction on the Y table 1 by rotation of the X axis motor 4. As a result, an XY table that moves in the XY directions, and a printed circuit board 6 on which a chip-shaped electronic component 5 (hereinafter, referred to as a chip component or a component) is mounted is fixedly mounted on a fixing unit (not shown).

Reference numeral 7 denotes a supply table, on which a large number of component supply devices 8 for supplying the chip components 5 are arranged. Reference numeral 9 denotes a supply base drive motor, which rotates the ball screw 10 to guide the supply base 7 to the linear guide 12 via a nut 11 fixed to the supply base 7 by being screwed with the ball screw 10. Move in the direction. Reference numeral 13 denotes a rotary table that rotates intermittently, and mounting heads 15 having a plurality of suction nozzles 14 are arranged at equal intervals on the outer edge of the table 13 in accordance with the intermittent pitch.

Reference numeral I denotes a suction station at which the suction nozzle 14 sucks and picks up the component 5 from the supply device 8 by intermittent rotation of the rotary table 13, where the suction head 14 stops. Adsorb 5 16 is a component 5 that the suction nozzle 14 sucks
This is a component recognition device for recognizing the positional shift of the component 5 by imaging the lower surface of the component 5 with a camera in a predetermined visual field range and recognizing the imaged screen, and is provided in the recognition station II.

Next mounting head 1 of the recognition station II
The position where 5 is stopped is the angle correction station III, and the head rotation device 17 is an angle amount that takes into account a predetermined angle amount for correcting the angular position deviation of the chip component 5 due to the recognition result of the recognition device 16. Wearing head 15
Rotate in the θ direction. The θ direction is the direction of rotation around the axis of the nozzle 14.

The next stop position next to the angle correction station III is the mounting station IV, and the component 5 to be picked up by the suction nozzle 14 of the station IV on the board 6.
Are mounted by lowering the mounting head 15. Reference numeral 20 denotes an up-and-down rod that moves up and down, and a swing lever 21 of the component supply device 8
The component storage tape (not shown) in which the chip component 5 is enclosed at a predetermined interval is engaged with and swung, and the chip component 5 is supplied to the component suction position of the suction nozzle 14 by intermittently feeding in accordance with the space. 22 is a tape reel around which the component storage tape (not shown) is wound.

Next, a structure for positioning and fixing the substrate 6 of the XY table 3 will be described. However, this structure is omitted in FIG. 2 to 5, the substrate 6 is slid by being pushed by a transfer arm (not shown) while being supported by the grooves 25 on the inner side surfaces of the pair of transfer chutes 24. The substrate 6 stopped at a predetermined position on the chute 24 has positioning holes 26 at two positions in the transport direction,
27 is provided, and positioning pins 28 and 29 are inserted into the holes 26 and 27 to be positioned with respect to the XY table 3.

The positioning hole 26 is circular and has the same shape and size as the positioning pin 28. Positioning hole 27
Is an elongated hole in the substrate transport direction, and the pin 29 is the hole 2
Since the pin 29 has a circular shape having a diameter in the width direction, the pin 29 has a margin in the carrying direction when inserted into the hole 27, but the position is determined in the direction orthogonal to the carrying direction, and the hole
By inserting the pins 28 and 29 into the pins 6 and 27, the positioning in the plane direction (XY direction) is performed.

The pin 28 is fixedly attached to the XY table 3. The pin 29 is fixedly mounted on the moving base 31, and the moving base 31 is slidably movable on the guide rail 32 of the linear guide along the rail 32. Since it extends in the transport direction of 6, the movable table 31 can move along the transport direction of the substrate 6.

As shown in more detail in FIGS. 1 and 4, the movable table 31 is provided with an engaging lever 35 that swings around a support shaft 34 fixed to the movable table 31, and the lever 35 An engaging claw 36 is formed at the tip on the right side of FIG. A rack portion 37 is mounted on the XY table 3 in parallel with the guide rail 32.
On the upper surface of 7, the engaging claws 36 are provided with teeth 38 which mesh with each other when the lever 35 swings clockwise in FIG. The engaging lever 35 is urged in a clockwise swinging direction with respect to the support shaft 34 by a compression spring 39, one end of which is in contact with the moving base 31 and the other end of which is in contact with the lower part of the left end of the lever 35 in FIG. The urging force causes the pawl 36 to engage with the teeth 38 of the rack portion 37 as shown in FIG.
1, that is, the positioning pin 29 is positioned and fixed.

A conical recess 48 is formed on the upper surface of the left end of the engaging lever in FIG. A backup pin 40 is detachably set up on the XY table 3, and a chute 24 moves up and down with respect to the XY table 3 by an elevating mechanism (not shown) and descends to the backup pin 40 to the substrate 6 The back side of is supported. As shown in FIG. 7, the chute 24 is a guide portion 4 provided on the XY table 3.
A guide rod 46 provided on the chute 24 penetrates through the inside of the chute 24 so that it can be moved up and down without changing the position in the XY directions.

Next, a mechanism for automatically moving the moving table 31 will be described. In FIG. 3, reference numeral 41 denotes an intermediate base, which is fixedly attached to a base 42 to which the XY table 3 and the linear guide 12 are attached. A cylinder 43 is provided on the intermediate base 41, and the cylinder 43 is attached such that a rod 44 thereof projects downward.

Although the cylinder 43 is provided at a position fixed in the XY directions, the XY table 3 is attached to the rod 4
4 can be fitted into the recess 48 on the upper surface of the left end of FIG. The rod 44 is prevented from hitting the chute 24 in the raised position by an elevating mechanism (not shown) at the retracted or raised position in the cylinder 43, and by projecting it, as shown by the chain double-dashed line in FIG. 6 and FIG. The lever 35 can be engaged and pressed, and the engaging claw 36 can be separated from the teeth 38 of the rack portion 37. When the lever 35 is engaged, the tip of the rod 44 is fitted into the recess 48 so that the lever 35, that is, the movable base 31 does not move with respect to the rod 44.

Next, the control block of the electronic component automatic mounting apparatus will be described with reference to FIG. 50 is a CPU, RA
Based on various data stored in M51, the operation related to component mounting is controlled according to the program stored in ROM52. A drive circuit 54 is connected to the CPU 30 via an interface 53, the Y-axis motor 2 and the X-axis motor 4 are connected to the drive circuit 54, and the movement of the Y table 1 and the XY table 3 is controlled by the CPU 50. To be done. The cylinder 43 is also connected to the drive circuit 54.

A moving pin position memory 55 is stored in the RAM 51.
Is provided, and the current position of the moving table 31 in the X direction, that is, the substrate transport direction is stored. In addition, the RAM 51 has a moving table 3
The position in the Y direction at which the rod 44 can contact the lever 35 of No. 1 is also stored. Further, the RAM 51 can store the board data as shown in FIG. 9 for each board type, and the X of the board 6 can be stored according to the data of the positioning pin position of the stored data.
XY for the position of the moving table 31 according to the size of the direction
It stores the data of the position where the table should be.

The operation will be described below with the above configuration. Before the automatic component mounting operation of the electronic component automatic mounting apparatus starts, the position of the positioning pin 29 for positioning the substrate 6 on which the chip component 5 is mounted next is adjusted to the position of the substrate 6 in the X direction. To move to. That is, when the board type to be produced next is keyed in from the operation unit (not shown) and the start key (not shown) is pressed, the CPU 50 reads the current position of the moving base 31 from the moving pin position memory 55 and stores it in the RAM 51. Also read the data of the position of the moving table 31 in the Y direction,
The XY table is controlled by controlling the drive of the axis motor 2 and the X axis motor 4.
The bull 3 is moved to the position indicated by the data.

Next, the CPU 50 operates the cylinder 43 to lower the rod 44 and swings the lever 35 counterclockwise against the biasing force of the spring 39 as shown in FIG. It is separated from the tooth 38 of the portion 37. Next, the CPU 50 rotates the X-axis motor 4 from the RAM 51 in accordance with the positioning pin position data of the designated board type as shown in FIG. Moves in the X direction, and the moving base 31 does not move because it is pressed by the rod 44. Therefore, the moving base 31 moves in the X direction with respect to the XY table 3 because the engaging claw 36 is disengaged from the teeth 38. Then, it moves along the guide rail 32 and stops at the position of the positioning pin position data.

Next, the CPU 50 pulls up the rod 44 and raises it, and the biasing force of the spring 39 swings the lever 35 in the clockwise direction in FIG. 7 to engage the pawl 36 with the tooth 38 of the rack portion 37, and the movable table 31. Are fixed to the XY table 3. In parallel with this operation, the CPU 50 stores the current position of the XY table 3 in the X direction in the moving pin position memory 55.

Next, automatic operation is started by operating an operation unit (not shown). That is, the substrate 6 is slid and moved by the transfer arm (not shown) to the transfer chute 24 that has been raised to a position where the substrate 6 can be transferred by an elevator mechanism (not shown), and is stopped at a predetermined position. Next, an elevator mechanism (not shown) moves the chute 24 and the guide rod 46 moves the guide portion 45.
When the positioning pin 28 is fitted into the positioning hole 26 and the positioning pin 29 is inserted into the positioning hole 27 when the XY table 3 is lowered while penetrating through and guiding the substrate 6, positioning of the substrate 6 in the XY directions is performed. At the same time, the lower surface of the substrate 6 contacts the backup pin 40, and the substrate 6 is fixed and supported.

Next, the supply base 7 moves, the chip component 5 is taken out from the desired component supply device 8 by the suction station I to the suction nozzle 14, and the head 15 moves by the intermittent rotation of the rotary table 13. And recognition station II
At this time, the recognition device 16 recognizes the positional deviation with respect to the suction nozzle 14, and the angle swing considering the recognition result by the head rotating device 17 and the movement considering the recognition result of the XY table 3 cause the substrate 6 to move. The chip component 5 is mounted at a desired position at a desired angle.

When the components 5 are successively picked up by the head 15 and mounted on the substrate 6, and the component mounting on the substrate 6 is completed, the chute 24 is raised by an elevating mechanism (not shown), and pins 28 are inserted from the positioning holes 26 and 27. When 29 is removed, the substrate 6 also removes the support of the backup pin 40. Next, the next substrate 6 moves onto the chute 24 and the finished substrate 6 is discharged and conveyed downstream.

When the mounting of components on a predetermined number of boards 6 is completed by repeating the above-mentioned operation, the automatic operation is stopped and the board 6 to be produced next is set up and replaced.
When the size in the X direction is different, the moving table 31 is automatically moved in the same manner as described above. In this embodiment, the case where the pins are inserted into the positioning holes formed in the substrate 6 to position the substrate has been described, but FIGS.
The same configuration can be applied to the case of positioning based on the so-called outer shape reference of the substrate as shown in FIG.

That is, when the positioning holes 26 and 27 are not formed in the substrate 6, the engaging plate 57 abuts the rear end surface of the substrate 6 and presses the front end surface of the substrate against the fixing pin 58 to position in the X direction. Is done. The engaging plate 57 is provided on the moving base 59, and is rotated in a direction in which the substrate 6 is pressed by a spring (not shown) when the lever 60 is pressed by the descending chute 24. The spring 61 urges the engaging plate 57 to return in the direction of separating from the substrate 6 when the chute 24 moves up.

A lever 62 is swingably attached to the movable table 59 in the same manner as described above, and an engaging claw 64 at the tip of the lever 62 is engaged with a tooth 38 of the rack portion 37 by being biased by a spring 63. The movable table 59 is positioned and fixed by means of this. With such a mechanism, the position of the movable table can be easily returned in accordance with the size of the substrate 6 in the X direction even in the case of positioning based on the outer shape.

Further, in this embodiment, the cylinder 43 is provided and the position of the positioning pin 29 or the engagement plate 57 is automatically changed by utilizing the movement of the XY table 3. However, the cylinder 43 is not used. Even when the operator performs a setup change operation, the operator pushes the left end portion of the lever 35 shown in FIG. 1 or the left end portion of the lever 62 shown in FIG. It is also possible to move 59 to a desired position and release the hand to perform positioning.

Further, in the present embodiment, the XY table 3 is used as the moving means for moving the positioning pin 29 or the engaging plate 57 which is the positioning member, but in the case where the table for fixing the substrate 6 does not move, , Cylinder 43
It is sufficient to provide a moving means for moving the releasing means corresponding to the above while keeping the releasing state. Further, in the present embodiment, the positioning pin 29 and the engaging plate 57 are attached to the moving bases 31 and 59 to be movable, but the positioning pin 28 and the fixing pin 58 are provided.
May be provided on a similar moving table so that it can be easily moved and fixed to an arbitrary position in the substrate transfer direction.

[0035]

As described above, according to the present invention, since the positioning pin or the positioning member that engages with the end portion of the substrate is biased by the biasing means, the biasing means resists the biasing of the biasing means. By simply releasing the engagement of the engaging member with the engaged member, the positioning pin or the positioning member can be easily moved.

Further, since the positioning member is moved by the moving means while the engagement member is disengaged from the engaged member by the urging of the urging means, the positioning member can be moved without the labor of the operator. It becomes possible to do. Further, by using the table moving means for moving the table to move the positioning member, it is not necessary to provide a drive source for moving the positioning member.

[Brief description of drawings]

FIG. 1 is a side view showing a mechanism for changing the position of a positioning pin.

FIG. 2 is a plan view of an electronic component automatic mounting device.

FIG. 3 is a side view of an electronic component automatic mounting device.

FIG. 4 is a diagram of a mechanism for changing the position of a positioning pin as viewed in the substrate transport direction.

FIG. 5 is a plan view showing a portion of a positioning pin of an XY table.

FIG. 6 is a view of a cylinder for changing the position of a positioning pin and its mechanism as viewed in the substrate transfer direction.

FIG. 7 is a side view showing a state where a rod of a cylinder swings an engagement lever.

FIG. 8 is a control block diagram of the electronic component automatic mounting apparatus.

FIG. 9 is a diagram showing board data.

FIG. 10 is a plan view showing an essential part of an XY table having a board positioning mechanism based on an outer shape reference.

FIG. 11 is a side view showing a mechanism for changing the position of the engagement plate for positioning the substrate based on the outer shape reference.

FIG. 12 is a view of a mechanism for changing the position of an engagement plate for positioning a substrate based on an outer shape reference, as viewed in the substrate transport direction.

[Explanation of symbols]

 3 XY table (moving means) 4 X-axis table (table moving means) 6 printed circuit board 24 transport chute 26 positioning hole (hole) 27 positioning hole (hole) 28 positioning pin (positioning member) 29 positioning pin (positioning) Member) 32 Guide rail (guide member) 35 Engaging lever (engaging member) 36 Engaging claw (engaging member) 37 Rack part (engaged part) 39 Compression spring (biasing means) 43 Cylinder (releasing means) 57 Engagement plate (positioning member)

Claims (4)

[Claims] 1. A printed circuit board positioning device for positioning a printed circuit board guided and conveyed by a pair of chutes by inserting a positioning pin into a hole formed in the printed circuit board. A guide member for guiding the movement in the carrying direction, an engaged portion arranged along the guide member in the carrying direction, and the positioning pin for positioning and fixing the positioning pin moved by being guided by the guide member. A printed circuit board positioning device comprising: an engaging member that engages with the engaged portion; and a biasing unit that biases the engaging member to engage with the engaged portion. 2. A printed board positioning device for positioning a printed board guided by a pair of chutes in the carrying direction by engaging positioning members on both end surfaces of the board in the carrying direction. For positioning and fixing a guide member for guiding the movement in the transport direction, an engaged portion arranged along the guide member in the transport direction, and the positioning member guided and moved by the guide member. A printed circuit board positioning device comprising: an engaging member that engages with the engaged portion; and a biasing unit that biases the engaging member to engage with the engaged portion. 3. A printed circuit board positioning device for positioning a printed circuit board guided and conveyed by a pair of chutes by a positioning member engaging the circuit board, and guiding movement of the positioning member in the carrying direction. Engages with the guide member, the engaged portion arranged along the guide member in the transport direction, and the engaged portion for positioning and fixing the engaging member moved by being guided by the guide member. Engaging member, urging means for urging the engaging member to engage the engaged member, and urging of the urging means to release the engaged member of the engaging member. A releasing means for releasing the engagement with the member, and a moving means for moving the positioning member along the guide member while releasing the engagement of the engaging member with the engaged member by the releasing means are provided. Printed circuit board positioning characterized by Device. 4. A printed circuit board positioning device for positioning a printed circuit board guided and conveyed by a pair of chutes provided on a table, wherein a positioning member engages with the printed circuit board. Member formed on the table for guiding the movement of the guide member, the engaged portion arranged along the guide member in the transport direction, and the engagement member guided and moved by the guide member. An engaging member that engages with the engaged portion for positioning and fixing the mating member; a biasing unit that biases the engaging member to engage the engaged member; Releasing means for releasing the urging to release the engagement of the engaging member with the engaged member, and the releasing means for releasing the engagement of the engaging member with the engaged member by the releasing means. Move the table in the transport direction to A printed circuit board positioning device comprising: a table moving means for moving the placement member along the guide member.