JPH0549730U - Sheet reversal conveyor - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] Miniaturization and rapid construction of a device for reversing and transporting printed wiring boards so that electronic parts can be mounted on both sides of the boards. Enables reverse transportation. [Structure] A sheet 21 conveyed by a first belt conveyer 22 is conveyed by being sandwiched by an endless first belt 32 and a second belt 33 which are vertically paired, and the first and second belts are angled. 18 by displacement driving means
The sheet is inverted by 0 °, and the sheet thus inverted is further conveyed by the subsequent second belt conveyor 26.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an apparatus for inverting and conveying a sheet such as a printed wiring board.

[0002]

[Prior Art]

 A typical prior art is shown in simplified form in FIG. In the space 3 between the first transporting means 1 and the second transporting means 2, the third and fourth transporting means 4, 5 and the reversing means 6 provided between them are arranged. The first and second conveying means 1 and 2 carry and convey the rigid printed wiring board 58 by the endless belts 7 and 8. Each belt 7, 8 is surrounded by a housing 9, 10. An outlet 11 and an inlet 12 of the substrate 58 are formed in the housings 9 and 10.

FIG. 10 is a simplified perspective view showing a part of the prior art shown in FIG. The substrate 58 carried by the belt 7 of the first carrying means 1 is transferred from the outlet 11 of the housing 9 to the third carrying means 4 and carried, and is sandwiched by the V-shaped chuck 13 of the reversing means 6 and indicated by an arrow. It is angularly displaced 180 ° in 14 directions, is further conveyed by the fourth conveying means 5, and is further conveyed by the belt 8 from the inlet 12 of the housing 10 of the second conveying means 2. The chuck 13 inverts the substrate 58 by 180 ° angular displacement as indicated by the arrow 14, as described above, by the angular displacement driving means 15 such as an oscillating cylinder or a rotary actuator.

[0004]

[Problems to be solved by the device]

 In such a prior art, the substrate 58 transferred by the belt 7 of the first transfer means 1 is once received by the third transfer means 4, and the chuck is partially inserted into the third transfer means 4. The substrate 58 on the third transfer means 4 is sandwiched and reversed by 13 and then the substrate 58 is transferred to the fourth transfer means 5 by the chuck 13 as shown by an imaginary line 13a in FIG. The substrate 58 on the transfer means 5 is transferred to the belt 8 of the second transfer means 2. As described above, the chuck 13 needs to sandwich the substrate 58 by at least partially entering between the third and fourth transfer steps 4 and 5, and thus, particularly in the configuration in which the housings 9 and 10 are provided, And the fourth conveying means 4 and 5 cannot be omitted. Therefore, there is a problem that the length L of the space 3 becomes long and the entire structure becomes large.

Another problem of this prior art is that after the substrate 58 is angularly displaced by the chuck 13 as shown by the reference numeral 13a and is inverted and transferred from the third transfer means 4 to the fourth transfer means 5, The chuck 13 must return from the state indicated by the reference numeral 13a to the posture in which the substrate 58 can be received by the third transfer means 4, and therefore, the substrate 58 can be inverted and transferred more quickly. desired.

An object of the present invention is to provide a sheet reversing / conveying device capable of downsizing the structure and rapidly reversing and conveying the sheet.

[0007]

[Means for Solving the Problems]

 The present invention is directed to a first conveying unit that conveys a sheet in a predetermined direction, and a second conveying unit that is arranged on the downstream side of the first conveying unit with an interval from the first conveying unit and that conveys the sheet further to the downstream side. Means and a reversing means arranged between the first and second conveying means, wherein the reversing means includes an endless first belt for receiving and conveying the sheet conveyed by the first conveying means, An endless second belt that sandwiches and conveys a sheet together with the first belt, a belt driving unit that drives the first and second belts, and a first and second belts that are angularly displaced while the sheet is sandwiched. A sheet reversing / conveying device characterized by including such reversing means, which is provided with an angular displacement driving means for conveying the sheet to the second conveying stage.

[0008]

[Action]

 According to the present invention, the sheet conveyed by the first conveying means is conveyed while being sandwiched by the first and second belts in the reversing means, and inverted by, for example, 180 ° by the angular displacement driving means, , And is transported by the second transport means. Since the sheets such as the printed wiring board are sandwiched and conveyed by the pair of first and second belts as described above, the third and fourth conveying means 4 and 5 in the above-mentioned prior art are used. The whole structure can be miniaturized without the need. In addition, the reversing means can reverse the first sheet and transfer it to the second conveying means, and then receive the next sheet from the first conveying means in that state, thus saving wasteful time and speeding up. The sheet can be conveyed while being reversed.

[0009]

【Example】

 FIG. 1 is a simplified side view for explaining the configuration and operation of one embodiment of the present invention, and FIG. 2 is a simplified perspective view of a part of the embodiment. The rigid printed wiring board 21, which is a sheet, is conveyed by the first conveying means 22 in a horizontal posture in the direction of the arrow 23, and is rotated by 180 ° around the horizontal axis by the reversing means 24 as indicated by the arrow 25. After that, it is further conveyed by the second conveying means 26 in the horizontal direction in the direction of the arrow 27. In the first transporting means 22, an endless belt 29 is wound around a pulley 28 having a horizontal axis and stretched, and the substrate 21 is placed on the stretched portion 29 a of the belt 29 and transported. The second transport means 26 is also realized by the same configuration as the first transport means 22, and the substrate 21 is placed on the upper stretched portion 31 a of the pair of endless belts 31 and transported.

An inversion means 24 is provided between the first and second transfer means 22 and 26, and the inversion means 24 receives and transfers the substrate 21 transferred by the first transfer means 22. Of the first belt 32, and an endless second belt 33 that sandwiches and conveys the substrate 21 together with the first belt 32. The substrate 21 is sandwiched between the stretched portion 33a. The reverse transfer device of the present invention is implemented, for example, to mount electronic components on both sides of the substrate 21.

FIG. 3 is a side view of the embodiment shown in FIGS. 1 and 2, and FIG. 4 is a front sectional view of the embodiment. The reversing means 24 is provided in the housing 34, and such a housing 34 is arranged between the first and second conveying means 22 and 26 as described above.

The housing 34 is provided with a stopper 63 for temporarily stopping the substrate 21 conveyed from the first conveying means 22, and the stopper 63 can be moved up and down by a double-acting pneumatic cylinder 64. By this, it is possible to set the loading timing of the substrate 21 loaded into the reversing means 24. The stopper 63 and the cylinder 64 can be omitted.

FIG. 5 is a perspective view of a part of the reversing means 24, and FIG. 6 is a more simplified perspective view of the reversing means 24. The first belts 32 are arranged in pairs and are stretched between the pulleys 35 and 36. The second belt 33 is stretched between the pulleys 37 and 38. The pulleys 35 to 38 are rotatably provided on the pair of support members 39a and 39b around a horizontal axis, respectively, and the pulley 37 is rotated by a motor 41 via a bevel gear 40 meshing with each other so that the pulley 37 can rotate forward and backward. Driven. A gear 42 that meshes with each other is connected to the pulleys 36 and 38, whereby the belts 32 and 33 run at a constant speed. A connecting rod 43 is fixed to one supporting member 39b of the supporting members 39a and 39b forming a pair, and a guide cylinder 44 is fixed to the other supporting member 39a. The connecting rod 43 is inserted to adjust the mutual distance between the supporting members 39a and 39b, and the combination of the connecting rod 43 and the guide cylinder 44 is located outside the belts 32 and 33 (for example, the upper and lower sides in FIG. 4). Are provided in pairs. One support member 39b can be angularly displaced by 180 ° about a horizontal axis by a driving means 45 such as a swing cylinder or a rotary actuator, and this support member 39b is rotatably attached to a bracket 46 fixed to the housing 34. Supported. The other support member 39a is rotatably supported by the bracket 47 by the shaft 56. The bracket 46 is fixed to the housing 34 as described above, and the bracket 47 is displaceable in the direction of arrow 49 along a rail 48 perpendicular to the transport direction 23, whereby the board 21 to be transported is transported. Substrates 21 having various widths can be sandwiched between belts 32 and 33 according to the value of the width (the direction perpendicular to the paper surface of FIGS. 1 and 3 and the lateral direction of FIG. 4).

The operation will be described with reference to FIG. 1 again. As shown in FIG. 1A, the substrate 21 is carried by the first carrying means 22 which is a pre-process. The base plate 21 from the first conveying means 22 is detected by the detecting means 51 provided at a fixed position, whereby the motor 41 causes the belts 32 and 33 to move the respective stretched portions 32a and 33a in the direction of arrow 52. It is driven to rotate in the forward direction so that it runs to.

Next, as shown in FIG. 1B, when the substrate 21 is sandwiched between the belts 32 and 33 and the detection unit 51 no longer detects the substrate 21, the motor 41 is stopped. Next, as shown in FIG. 1 (3), the motor 45 is driven with the motor 41 stopped, and the supporting members 39a and 39b are angularly displaced about the horizontal axis of 180 ° as indicated by the arrow 25. The substrate 21 is inverted. After completion of this reversal, as shown in FIG. 1 (4), the motor 41 is reversed from the state shown in FIG. 1 (1), and the substrate 21 sandwiched by the belts 32 and 33 is indicated by the arrow 53. As described above, it is carried out toward the second carrying means 26. As shown in FIG. 1 (5), when the detection means 54 provided at the fixed position determines that the substrate 21 is no longer detected, and thus the substrate 21 is transferred to the second transfer means 26, the substrate 21 is transferred. 21 is conveyed in the direction of arrow 27 by the second conveying means 26.

In the state of FIG. 1 (5), a new substrate 21 conveyed by the first conveying means 22 can be carried in by the reversing means 24. Thus, as shown in FIG. 1 (6), when the new substrate 21 is clamped by the belts 32 and 33 from the first transport means 22, the belts 32 and 33 are stopped by the motor 41, and then the arrow As indicated by reference numeral 25a, the substrate 21 is inverted by being displaced by 180 ° in the direction opposite to that of the arrow 25 described above. Thereafter, as shown in FIG. 1 (7), the belts 32 and 33 are normally rotated and the substrate 21 is carried out to the second transporting means 26. Such a series of operations can be automated by operating the motors 41 and 45 by a microcomputer or the like that responds to the outputs of the detecting means 51 and 54. In the above-described embodiment, the reversing means 24 can convey the substrate 21 and also can perform 180 degree angular displacement about the horizontal axis for reversing, so that the distance between the first and second conveying means 22 and 26 can be changed. Can be shortened to simplify the overall configuration.

FIG. 7 is a simplified side view of another embodiment of the present invention. This embodiment is similar to the previous embodiment, but it should be noted that the first and second transport means 22 and 26 are not arranged on a single horizontal transport surface and the second transport means 26 is not. Are arranged at an angle of θ1 with respect to the first transport means 22. The inverting unit 24 angularly displaces the substrate 21 transported from the first transporting unit 22 by an angle θ1 and inverts it, and transports the substrate 21 to the second transporting unit 26.

FIG. 8 is a simplified side view of still another embodiment of the present invention. In this embodiment, the conveying surfaces of the first and second conveying means 22 and 26 are inclined by the angle θ2, the direction changing means 61 is angularly displaced by the angle θ2, and is conveyed by the first conveying means 22. The incoming substrate 21 can be carried out to the second transfer means 26. The direction changing means 61 has a structure similar to that of the inverting means 24 described above.

In addition to the substrate, the present invention can also convey other flat sheets.

[0020]

[Effect of the device]

 As described above, according to the present invention, the sheet conveyed by the first conveying means is nipped and conveyed by the endless first and second belts of the reversing means, and the first and second belts are conveyed. Since the angular displacement driving means angularly displaces and inverts the sheet, and the inverted sheet is conveyed by the second conveying means, the distance between the first and second conveying means is shortened and the entire structure is improved. It is possible to reduce the size, and it is also possible to receive the next sheet from the first conveying means and further invert the sheet in a posture after the inversion conveyance of the pair of first and second belts by the inverting means is completed. Since this is possible, it is possible to quickly reverse and convey the sheet.

[Brief description of drawings]

FIG. 1 is a side view showing a simplified configuration of an embodiment of the present invention and explaining the operation thereof.

FIG. 2 is a simplified perspective view of the embodiment shown in FIG.

3 is a side view of the embodiment shown in FIGS. 1 and 2. FIG.

FIG. 4 is a front sectional view of the embodiment.

5 is a perspective view showing a part of the reversing means 24. FIG.

FIG. 6 is a simplified perspective view of the inverting means 24.

FIG. 7 is a simplified side view of another embodiment of the present invention.

FIG. 8 is a simplified side view of another embodiment of the present invention.

FIG. 9 is a simplified side view of the prior art.

FIG. 10 is a simplified perspective view of the prior art shown in FIG.

[Explanation of symbols]

 21 Substrate 22 First Conveying Means 26 Second Conveying Means 24 Reversing Means 29, 31 Belt 32 First Belt 33 Second Belt 41 Belt Driving Motor 45 Angular Displacement Driving Motor

Claims (1)

[Scope of utility model registration request] 1. A first transporting sheet in a predetermined direction
A transport unit, a second transport unit that is spaced apart from the first transport unit and is disposed downstream of the first transport unit, and transports the sheet further downstream, and is disposed between the first and second transport units. The reversing means includes an endless first belt that receives and conveys the sheet conveyed by the first conveying means, and an endless sheet that nips and conveys the sheet together with the first belt. A second belt, a belt driving means for driving the first and second belts, and an angular displacement driving means for angularly displacing the first and second belts in a state where the sheets are sandwiched and conveying the sheets to the second conveying means. And a sheet reversing / conveying device.