JP2537901B2 - Thin plate positioning device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to highly accurate positioning of a printed circuit board or the like on which paste such as cream solder is printed by a printing machine and various kinds of electronic components are mounted by a mounting machine. The present invention relates to a thin plate positioning device for performing.

2. Description of the Related Art In recent years, a thin plate positioning device has been used for various purposes as a highly accurate positioning of a printed circuit board on which a wide variety of electronic components are mounted with high density. There are two types of methods: a reference hole regulation method of positioning by inserting a reference pin into the reference hole, and a thin plate edge regulation method of performing positioning by regulating the edge of the printed circuit board.

Hereinafter, the conventional thin plate positioning device described above will be described with reference to the drawings.

FIG. 10 is a plan view of a thin plate positioning device of a thin plate edge regulating method in a screen printing machine described in Japanese Utility Model Publication No. 48-43454. In FIG. 10, the thin plate carrier 1
Is moved from the position A to the position B shown in FIG. 10, and the roller 2 presses the thin plate 3 against the feeding part C of the stage at that position. At the same time, the pressing plate 4 presses the thin plate 3 toward the feeding part D to position the thin plate 3.

However, in the above-described configuration, in the thin plate positioning apparatus including the transport unit (not shown) for loading and unloading the thin plate 3, the thin plate 3 is supplied from the transport unit to the thin plate transport base 1, and the thin plate transport base 1 moves from the thin plate 3 to the thin plate 3. It is necessary to have a mechanism for taking out and sending it out to the carrying section, and therefore a very complicated mechanism is required.
Further, since the thin plate positioning device having the above-mentioned configuration is a thin plate edge regulating system positioning device, there is a problem that positioning cannot be performed when a thin plate is desired to be positioned by the reference hole regulating system. .

FIG. 11 is a plan view of the thin plate edge regulating type thin plate positioning device described in Japanese Utility Model Publication No. 58-2064. In FIG. 11, when the thin plate 6 conveyed by the rope conveyors 5a and 5b from the arrow E direction hits the stoppers 7a and 7b, the rope conveyors 5a and 5b automatically stop. After the stop, the pressing plate 9 at the tip of the air cylinder 8 fixed at the same height as the rope conveyors 5a, 5b presses the thin plate 6 against the stopper 7c to position the thin plate 6.

However, in the above configuration, since the positioning is performed by setting the edge of the thin plate, there is a problem that the thin plate cannot be positioned when the thin plate to be positioned by the reference hole regulating method is conveyed. Was.

FIG. 12 shows a perspective view of a conventional thin plate positioning device of a reference hole regulating system.

In FIG. 12, the thin plate 10 is a conveyor belt 12a, 12b provided on conveyor rails 11a, 11b shaped to support the edge of the thin plate 10.
Is conveyed from the direction of arrow F and stopped at the position of the thin plate stopper lever 13. Then cylinder 14a
Rises to rotate the shaft 15a, and the tips of the thin plate pressing levers 16a and 16b fixed to the shaft 15a descend to the upper surface of the thin plate 10. After that, the cylinder 14a is lowered, the shaft 15b is rotated, and the positioning levers 17 and 18 fixed thereto are moved to the positions 17a and 1a shown in FIG.
Ascending from the position of 8a to the positions of 17b and 18b, the reference pins 19a and 19b are inserted into the reference holes provided in the thin plate 10 to position the thin plate 10.

However, in the above-mentioned configuration, the thin plate 1 is inserted by inserting the reference pins 19a and 19b into the reference holes provided in the thin plate 10.
Since it is a reference pin type thin plate positioning device that performs positioning of 0, the thin plate cannot be positioned when the thin plate desired to be positioned is conveyed by regulating the edge of the thin plate. Also, it is necessary to move the thin plate pressing levers 16a and 16b, the thin plate stopper lever 13, and the positioning levers 17 and 18 each time the dimension of the thin plate in the conveying direction changes, and this work is very troublesome. There was also a problem that wasted time was consumed.

As described above, the common points of the conventional thin plate positioning positions shown in FIGS. 10, 11, and 12 are, from the above-described configuration, a thin plate positioning device that performs positioning by the reference hole method when positioning a thin plate, and a thin plate positioning device. Since each thin plate positioning device that performs positioning by the edge regulation method has its own unique mechanism, both the thin plate that performs positioning by the reference hole regulation method and the thin plate that performs positioning by the edge regulation method Cannot position with the thin plate positioning device.

Further, in the conventional thin plate positioning device, it is necessary to replace each of the positioning devices depending on whether the thin plate for positioning is the reference hole regulating method or the edge regulating method, which causes a waste of time. Had.

In view of the above problems, the present invention is a symmetrical thin plate for positioning, even if it is a thin plate for positioning by a reference hole regulating method,
Provided is a thin plate positioning device capable of positioning a thin plate with a single thin plate positioning device that does not require replacement even for a thin plate that is positioned by the thin plate end face regulating method.

Means for Solving the Problems In order to solve the above-mentioned problems, the thin plate positioning device of the present invention supports a plurality of movable rails that support the edges of the thin plates and are movable along a pair of parallel transport rails. The sliding body has a reference pin that can be inserted into the reference hole provided in the thin plate and that can be retracted from the transport surface of the thin plate, and an edge-regulating member that positions the edge of the thin plate at a position higher than the transport rail. Provided below the transport rail, a table on which a thin plate is placed and fixed, and an elevating part that can raise and lower the table and can be intermediately stopped at a position higher than the transport rail are provided. A plurality of fixed rollers that abut one edge of the thin plate, a plurality of first movable rollers that abut and abut the edge of the thin plate that is not supported by the transport rail, and a position substantially opposite to the fixed roller. Yes, supported on the transport rail A second movable roller that urges the other edge of the thin plate toward the fixed roller to contact the edge, and the edge regulating member contacts the edge of the thin plate at the intermediate stop position of the table. It is equipped with.

When the thin plate provided with the predetermined reference hole is positioned by the configuration described above, the thin plate is positioned by inserting the reference pin into the reference hole at the height of the thin plate transported by the transport rail. When positioning the thin plate not provided with the predetermined reference hole, the thin plate is raised to a position higher than the transport rail by the elevating unit, and at that height, the fixed roller, the first movable roller, and the second movable roller are By the edge regulating member configured with the movable roller, the edge of the thin plate can be positioned, so the symmetrical thin plate for positioning is a thin plate for positioning by the reference hole regulating method.
Even if the thin plate is positioned by the edge edge regulation method, the thin plate can be positioned without replacement, and the wasteful time spent for replacement can be eliminated.

Example Hereinafter, the thin plate positioning device of one embodiment of the present invention,
This will be described with reference to the drawings.

FIG. 1 is a perspective view of a thin plate positioning device according to an embodiment of the present invention, and FIG. 2 is a perspective view of a screen printing machine having the thin plate positioning device in FIG.

In FIG. 2, a thin plate (not shown) is transported by the transport unit 20 to a predetermined position under the screen plate 21, and the thin plate positioning device 22 positions the thin plate at that position. After positioning, it is in a predetermined position under the screen plate 21,
By driving an elevating unit (not shown) below the transport unit 20, the thin plate is raised until it comes into contact with the lower surface of the screen plate 21, and the squeegee 24 of the print head unit 23 prints on the thin plate.

In FIG. 1, the thin plate 25 is driven by the transport belts 27a and 27b while being supported by the transport rails 26a and 26b that are shaped to support the edges of the thin plate 25 in the transport unit 20.
It is conveyed from the direction of arrow G. 28 is the thin plate left side position regulating part,
28b is the thin plate right side position regulating part, 29 is the thin plate rear side position regulating part, and the thin plate left side position regulating part 28 and the thin plate right side position regulating part 28a
Are symmetrically configured. A shaft 30 installed parallel to the transport rail 26a and a rack shaft with rack processing on the bottom surface
The slider 32 of the thin plate left side position regulating portion 28 and the slider 32a of the thin plate right side position regulating portion 28a slide on the top 31 so as to be fixed.

FIG. 3 is a plan view of the thin plate left side position regulating portion 28 in FIG. 1, and is a sectional view taken along the line H-H in FIG. 3, a sectional view taken along the line I-I, a sectional view taken along the line J-J, and K- Sectional views taken along the arrow K are shown in FIG. 4, FIG. 5, FIG. 6, and FIG. 7, respectively.

In FIG. 4, when the cylinder 33 moves to the right, the stopper 35 fixed to the lever 34 rotates counterclockwise from the position of 35a about the pin 36, and when returning, it is performed by the force of the compression spring 37. .

In FIG. 5, when the cylinder 38 moves to the right, the presser lever 40 moves around the pin 39 and the stopper 41
It rotates clockwise from the position of 40b until it comes into contact with, and the tip of the pressing lever 40 descends to near the upper surface of the thin plate 25. When returning it, the force of the tension spring 42 is used.

In FIG. 6, when the cylinder 43 moves to the right, the plate 45 fixed to the lever 44 rotates counterclockwise around the pin 46, and the reference pin 47 at the tip of the plate 45 moves from the lower surface of the thin plate 25. , 47b into the predetermined reference holes provided in the thin plate 25. When returning, the reference pin 47 is lowered below the thin plate 25 by the force of the compression spring 48.

Therefore, the thin plate 25 is positioned by inserting the reference pin 47 into the reference hole provided in the thin plate 25. When the thin plate 25 of the reference hole regulating method is conveyed, after stopping the thin plate 25 by the stopper 35 in FIG. 4, the holding lever 40 and the holding lever 40a on the right side position regulating portion 28a of the thin plate in FIG. 5 are stopped.
6 and the reference pin 47a (shown in FIG. 1) on the right side position regulating portion 28a of the thin plate in FIG.
Position. After positioning, lift the presser levers 40, 40a, and then raise the table 50 of the elevating part 49 directly connected to the vacuum device (not shown) to the tip of the cylinder 48 capable of intermediate stop, and place the thin plate 25 on the upper surface of the table 50. While fixing
The thin plate 25 is raised to the position of 25b on the lower surface of the screen plate 21. The presser levers 40 and 40a are for pressing the warp of the thin plate 25 that occurs when the reference holes of the reference pins 47 and 47a are inserted.

In FIG. 6, the fixed roller 52 at the tip of the plate 51 fixed to the upper portion of the slider 32 is located at a position higher than the transport rail 26a.

In FIG. 7, the cylinder 54 shown in FIG. 3 is fixed to the bracket 53 fixed to the upper part of the slider 32, and the roller 56 is attached to the tip with the pin 55 as the center by moving the cylinder 54 to the left. The lever 57 is rotated clockwise, and when returning, the cylinder 54 is moved in the opposite direction. The roller 56 is at a position higher than the transport rail 26a as shown in FIG.

8 is a side view of the thin plate rear side position regulating portion 29 as viewed in the carrying direction, and FIG. 9 is a sectional view taken along the line LL in FIG.

In FIG. 9, the slider 59 on the shafts 58a and 58b is the shaft 5
The force of the compression springs 60a and 60b wound around 8a and 58b is always pressed in the direction of arrow M. For the movement opposite to the arrow M direction, the cylinder 61 is returned in the direction opposite to the arrow M direction, and the N portion of the block 62 at the tip of the cylinder 61 is moved to the O of the slider 69.
It is performed by pressing it against the section. The sliding range of the slider 59 is determined by the stroke range of the cylinder 61. The rollers 62a and 62b in FIG. 1 are located at a position higher than the transport rail 26b shown in FIG. 8 and are attached to the tip of a plate 63 fixed to the slider 59. Therefore, the rollers 62a and 62b slide in the direction substantially perpendicular to the transport rail 26b by sliding the cylinder 61.

When the thin plate 25 of the thin plate edge-regulating method, in which positioning is performed by setting the edge of the thin plate 25, is conveyed, the thin plate 25 is stopped by the stopper 35 in FIG. 4, and then the thin plate 25 is stopped.
25 is a cylinder 48 of the elevating part 49 shown in FIG.
The thin plate 25 is placed on the 50, and the thin plate 25 is raised to the position of the thin plate 25a. Positioning of the edge of the thin plate 25 which is not supported by the transport rails 26a, 26b in a direction substantially perpendicular to the transport rails 26a, 26b is performed by setting the roller 56 of the thin plate left side position regulating portion 28 shown in FIG. Roller 56a of part 28a (first
(Shown in the drawing) is rotated counterclockwise, and the edges of the thin plate 25 are brought into contact with rollers 56 and 56a. At the same time, the transport rail 26
The edges of the thin plate 25 supported by a and 26b are positioned by the rollers 62a and 62b of the thin plate rear side position regulating portion 29 shown in FIG.
Move it in the direction of arrow M shown in the figure to move the thin plate left side
Roller 52 and roller 52a on the right side of the thin plate
The edge of the thin plate 25 is pressed against the side (shown in FIG. 1). After the positioning, the thin plate 25 is fixed to the upper surface of the table 50 in FIG. 6, and then the roller 56 in FIG. 3 is rotated counterclockwise and the roller 56a (shown in FIG. 1) is rotated clockwise, so that the rollers 62a and 62b are rotated. After returning to the direction opposite to the arrow M, the thin plate 25 is raised to the position of the thin plate 25b on the lower surface of the screen plate 21 shown in FIG.

If the size of the thin plate 25 in the direction of the transport rail changes,
A pinion fixed by a key 66 to the shaft 64 in FIG. 5 by rotating the handle 65 around the shaft 64 in the figure.
67 and rack shaft 31 are in mesh, so slider 32
Slides in the direction of the transport rail 26a. When fixing the slider 32 at the moved position, the clamp lever 68 shown in FIG. 4 is tightened.

As described above, according to this embodiment, the sliding thin plate left side positioning portion 28 on the side of the transport rail 26a and the sliders 32, 32a of the thin plate positioning portion 28a are provided with a drive unit that can be retracted into a predetermined reference hole of the thin plate 25. Pins 47, 47a, at a position higher than the transport rail 26a, fixed rollers 52, 52a abutting the edge of the thin plate 25 supported by the transport rail 26a and the edge of the thin plate 25 not supported by the transport rails 26a, 26b, Rollers 56, 56a having a driving portion that urges and abuts are provided at a position higher than the transport rail, and the thin plate rear side positioning portion 29 on the transport rail 26b side is provided with an edge of the thin plate 25 supported by the transport rail 26b. , Rollers 62a, 62b having a driving unit that urges and abuts at a position higher than the transport rails, and a thin plate 25 is provided under the transport rails 26a, 26b.
A thin plate having a predetermined reference hole is provided by providing a table 50 on which the table is mounted and fixed, and an elevating part 49 capable of elevating the table 50 and capable of intermediate stop at a position higher than the transport rail.
When positioning 25, at the height of the conveyed thin plate 25,
Positioning is performed by inserting the reference pins 47, 47a into the reference holes of the thin plate 25, and the thin plate 25 does not have the predetermined reference holes.
When performing positioning, the elevating part 49 lifts the thin plate 25 to a position 25a higher than the transfer rails 26a, 26b, and in the transfer rail direction, that is, the thin plate 25 not supported by the transfer rails 26, 26a. Position the edges of the rollers 56 and 56a.
In the direction perpendicular to the transport rails, that is, the positioning of the edge of the thin plate 25 not supported by the transport rails 26a, 26b is performed with the fixed rollers 52, 52a and the rollers 62a ,.
Since it can be done by abutting at 62b, the symmetrical thin plate for positioning is a thin plate for positioning with the reference hole regulation method, or a thin plate for positioning with the thin plate end face regulation method, without performing replacement. Therefore, it is possible to eliminate the wasteful time that was conventionally spent for exchange. Further, since the sliders 32 and 32a are provided with the stoppers 35 and the pressing levers 40 and 40a for stopping the conveyance of the thin plates, even if the dimensions of the thin plates 25 in the conveying direction are changed, the handles 65 and 65a can be rotated. Since the sliders 32 and 32a slide, the thin plate left side positioning portion can be quickly adjusted according to the size of the thin plate 25.
28 and the thin plate right side positioning portion 28a can be set.

EFFECTS OF THE INVENTION As described above, according to the present invention, a plurality of sliding bodies that support the edge of a thin plate and can move along a pair of parallel transport rails can be inserted into a reference hole provided in the thin plate. The reference pin that can be retracted from the transport surface, the multiple fixed rollers that contact one edge of the thin plate supported by the transport rail at a position higher than the transport rail, and the edge of the thin plate that is not supported by the transport rail are urged. The second movable roller that is in a position substantially opposite to the plurality of first movable rollers and the fixed roller that come into contact with each other and that urges the other end of the thin plate supported by the transport rail toward the fixed roller to make contact. An edge regulating member configured by a roller and for urging and abutting the edge of the thin plate is provided, and a table on which the thin plate is placed and fixed below the transport rail, and the table can be lifted and lowered. Elevation that allows intermediate stop at a higher position When the positioning of a thin plate with a predetermined reference hole is performed, the thin plate conveyed by the transport rail is provided by providing a portion and providing the edge regulating member so that the edge of the thin plate abuts at the intermediate stop position of the table. Position the thin plate by inserting the reference pin into the reference hole at the height of, and when positioning the thin plate that does not have the predetermined reference hole, raise the thin plate to a position higher than the transport rail in the lifting unit, Since the edge of the thin plate can be positioned at that height, it is necessary to replace the symmetrical thin plate that performs positioning, whether it is a thin plate that uses the reference hole regulation method or a thin plate that uses the edge edge regulation method. Therefore, the thin plate can be positioned, and the wasteful time spent for replacement can be eliminated.

[Brief description of drawings]

1 is a perspective view of a thin plate positioning device according to an embodiment of the present invention, FIG. 2 is a perspective view of a screen printing machine having the thin plate positioning device of FIG. 1, and FIG. 4 is a plan view of the portion, FIG. 4 is a view taken along the line H-H in FIG. 3, FIG. 5 is a view taken along the line I-I in FIG. 3, and FIG. 6 is a view taken along the line J-J in FIG. 7 is a side view of the thin plate rear side position regulating portion 29 of FIG. 1 as seen in the direction of the thin plate conveyance, and FIG. 9 is a line LL of FIG. FIG. 10 is a plan view of a conventional first thin plate edge regulation type thin plate positioning device,
FIG. 11 is a plan view of a conventional second thin plate edge regulating type thin plate positioning device, FIG. 12 is a perspective view of a conventional reference hole regulating type thin plate positioning device, and FIG. 13 is for positioning of FIG. It is a drive diagram of a lever. 25: Thin plate, 26a, 26b ... Conveyor rail, 32, 32a ... Slider, 47, 47a ... Reference pin, 52, 52a ... Fixed roller, 56, 56a ... Roller, 62, 62a ... Roller, 49 ……
Elevator, 50 ... table.

Claims (2)

(57) [Claims] 1. A pair of transport rails that support the edge of the thin plate and are provided in parallel with each other, a plurality of sliding bodies that can move along the transport rail, and insert into a reference hole provided in the thin plate. And a plurality of reference edge pins provided so as to be retractable from the conveying surface of the thin plate, a plurality of edge regulating members for urging and positioning the edge of the thin plate, and the thin plate placed on the lower side of the conveying rail and fixed. A table and an elevating part capable of elevating the table and capable of intermediate stop at a position higher than the transport rail are provided, the slide pin is provided with the reference pin and the edge regulating member, and the edge regulating member is a table A thin plate positioning device, which is configured to come into contact with an edge of the thin plate at an intermediate stop position. 2. An edge regulating member biases a plurality of fixed rollers that abut against one edge of the thin plate supported by the transport rail and an edge of the thin plate that is not supported by the transport rail. A plurality of first movable rollers that come into contact with the fixed roller, and the other edge of the thin plate that is substantially opposite to the fixed roller and is supported by the transport rail, is urged toward the fixed roller to come into contact therewith. The thin plate positioning device according to claim 1, wherein the thin plate positioning device comprises two movable rollers.