TWI565551B - Assembly device of the pallet guide device - Google Patents

Description

Pallet guiding device for assembly device Technical field

The present invention relates to a pallet guiding device for an assembly device. More specifically, the present invention relates to a pallet guiding device for an assembly apparatus capable of shortening the entire length of an assembly apparatus in an assembly apparatus such as a lens unit assembly apparatus provided with a plurality of assembly stations. .

Background technique

The lens unit assembly apparatus requires a plurality of assembly stations to mount a plurality of lenses and a light blocking plate to the lens barrel. When the assembly station is arranged in a straight line and the assembly step is divided to shorten the cycle time, the total length of the lens unit assembling device is increased (refer to, for example, Patent Document 1). If the total length of the lens unit assembly device is increased, the plant having a space for arranging the lens unit assembly device is limited, which is an unfavorable condition.

If the lens barrel that has been clamped on the assembly pallet is clamped on the assembly pallet, if the structure for mounting the components to the lens barrel is carried out between the assembly stations, the self-assembly pallet removal is not required. The lens barrel is moved to the subsequent assembly station. As a result, it is easy to keep the positioning accuracy of the lens barrel in the assembly station constant, so that the lens can be easily mounted on the lens barrel with high precision. The light barrier is a favorable condition. However, if the total length of the lens unit assembly device is increased, the total length of the guide rail for guiding the assembly pallet will also increase, and multiple guide rails must be connected in parallel and with high precision, so the connection work of the guide rails will require more work. (refer to, for example, Patent Document 2).

Further, if the total length of the lens unit assembly device is increased, the total length of the transfer device that returns the assembly pallet after the assembly work in the assembly station at the end to the assembly station at the beginning is increased. However, if the total length of the conveying device that returns the assembled pallet increases, the time required to return the assembled pallet at the end to the assembly station at the beginning will increase, resulting in an increase in the peripheral time required to assemble the lens unit.

Advanced technical literature Patent literature

Patent Document 1: Japanese Patent Laid-Open No. 2006-198712

Patent Document 2: Japanese Patent Laid-Open Publication No. 2007-270896

Summary of invention

The present invention has been completed based on the above technical background, and the following objects can be achieved.

SUMMARY OF THE INVENTION An object of the present invention is to provide a pallet guiding device which can simplify assembly and transport of an assembly pallet in an assembly apparatus provided with a plurality of assembly stations.

Another object of the present invention is to provide a pallet guide for an assembly apparatus that can shorten the overall length of an assembly apparatus in an assembly apparatus having a plurality of assembly stations. Device.

Another object of the present invention is to provide a pallet guiding device which can optimally assemble an assembly device for a lens unit used in a mobile phone or the like in an assembling device provided with a plurality of assembly stations.

The foregoing problems can be solved by the following design.

That is, the pallet guiding device of the assembling apparatus according to the first aspect of the present invention is provided with a conveying device capable of conveying the assembled product to the joining step from the assembly position of the predetermined step, wherein the conveying device is composed of the following parts: The linear guide rail is formed in a straight line shape, and a rolling body raceway surface is formed on the entire length of the axial direction for the rolling body to roll; the slider is formed with an infinite circulation path for the rolling body to circulate and roll, and the rolling body can be held And the rolling element is rolled on the rolling element raceway surface in a state where the rolling element raceway surface is preloaded, and the pallet is assembled, mounted on the slider, and mounted for holding the assembled body. The assembly jig of the product, wherein the assembled product can be transported from the assembly position of the predetermined step to the assembly position of the subsequent step along the guide rail; the pallet transport device can sequentially drive the assembly pallet along the guide rail The assembly position of the predetermined step is carried to the assembly position of the subsequent step; and the positioning device can be placed at the assembly position of the foregoing steps The assembly pallet is positioned at a predetermined position on the aforementioned guide rail.

According to a second aspect of the invention, in the pallet guiding device of the assembling device of the first aspect of the invention, the rail includes a first rail and a second rail, and the pallet conveying device faces the first rail and the second rail each The assembly pallet is sequentially transported, and the first pallet transport device is formed at one of the axial ends of the first rail and the second rail, and the assembly pallet can be transported from the first rail to the second rail. The second pallet transporting device is formed at the other end of the first rail and the second rail in the axial direction, and the assembly pallet can be transported from the second rail to the first rail, and the linear first conveyor rail Formed in the first pallet transport device, the assembly pallet is arranged in a line in the first rail, and is carried out from the first rail, and the assembly pallet is arranged in a line in the second rail, and The second guide rail is carried in, and the linear second transport rail is formed in the second pallet transport device, and the assembly pallet is arranged in a line in the second rail, and is carried out from the second rail. The assembly pallet is arranged in a line in the first rail, and is carried into the first rail, and the assembly pallet circulates and moves between the first rail and the second rail.

According to a third aspect of the present invention, in the pallet guiding device of the assembling device of the second aspect of the present invention, the first pallet conveying device includes: a first pallet loading device that can be carried out from the first rail toward the first conveying rail side The second pallet loading device can carry the assembly pallet from the first conveyor rail toward the second rail side; and the first pallet shifting device can be used in the first rail and the first rail (2) moving the first transport rail between the guide rails; the second pallet transport device includes: a third pallet transporting device, wherein the assembly pallet can be carried out from the second rail toward the second transport rail side; and the fourth pallet The plate loading device can carry the assembly pallet from the second conveyor rail toward the first rail side; and the second pallet shifting device can be used in the second rail The second transport rail is moved between the first rail and the first rail.

According to a fourth aspect of the present invention, in the pallet guiding device of the assembling device of the second or third aspect of the present invention, the assembly position of each of the steps is arranged at equal intervals along the first rail and the second rail, and the pallet is transported. The apparatus can simultaneously transport the aforementioned assembly pallets of the foregoing steps.

According to a fifth aspect of the present invention, in the pallet guiding device of the assembling apparatus of the fourth aspect of the present invention, the assembling jig can mount a lens and a light blocking plate to the lens barrel constituting the lens unit in order of steps to assemble the lens unit.

The present invention provides a pallet guiding device according to the assembly device of the present invention, characterized in that: a lens insertion device is provided, wherein the lens can be inserted into the lens barrel on the assembly jig by a small pressing force; And, the lens pressing device presses the lens inserted into the lens barrel by a pushing force greater than the pressing force, and presses the lens into a predetermined position in the lens barrel.

In the pallet guiding device of the assembling device of the present invention, the assembly of the assembly can be carried out on the guide rail for conveying the pallet without separately arranging the assembly station, and a simplified assembly device can be realized. Further, in the pallet guiding device of the assembling apparatus of the present invention, the linear first guide rail and the second rail provided with the plurality of assembly stations are in parallel with each other, and the assembly pallet is circulated and moved to the first rail and the second rail. The guide plates are reused between the guide rails. Therefore, compared with the case where the assembly apparatus is arranged in a straight line shape in the past, the total length of the assembly apparatus can be substantially reduced to half, so that it is possible to easily secure a factory having a space in which the assembly apparatus can be installed. Moreover, the total length of the guide rail for guiding the assembly pallet is substantially reduced Half is enough, so there is no need to connect multiple rails, which can reduce the connection time of the rails and easily ensure the accuracy of the rails.

1‧‧‧ lens unit assembly unit

1‧‧‧ lens unit assembly

1ST~12ST‧‧‧1st assembly station~12th assembly station

3A‧‧‧Board conveyor (1st pallet conveyor)

3B‧‧‧ pallet conveyor (second pallet conveyor)

4‧‧‧Parts tray supply and discharge device

5‧‧‧Part insertion device

7‧‧‧ pallet transporter

8‧‧‧Lens press device

11‧‧‧ base

21‧‧‧Lower side rail (1st rail)

22‧‧‧Upper rail (second rail)

23‧‧‧Packing pallets

24‧‧‧Sliding parts

31‧‧‧Board removal device

32‧‧‧Board loading device

33‧‧‧ pallet shifting device

41‧‧‧Parts tray

51‧‧‧X-axis mobile device

52‧‧‧Y-axis mobile device

53‧‧‧Z-axis mobile device

54‧‧‧θ-axis rotating device

55, 56‧‧ ‧ pillar

61‧‧‧Image detection device

62‧‧‧Board positioning device

71‧‧‧ pallet engagement device

72‧‧‧Board intermittent supply device

81‧‧‧floor

82‧‧‧Cylinder

83‧‧‧Parts pressed into the shaft

84‧‧‧ cylinder

85‧‧‧Lens push head

221‧‧‧ rolling element track surface

231‧‧‧Clamp clamp

241‧‧‧ rolling elements (balls or rollers)

311, 321‧‧ ‧ fork

331‧‧‧ base

332‧‧‧

333‧‧‧Servo motor

334‧‧‧Ball screw

335‧‧‧Conveyor rail (2nd conveyor rail)

511‧‧‧X-axis base

512‧‧‧X-axis slide

513‧‧‧X-axis servo motor

514‧‧‧X-axis ball screw

521‧‧‧Y-axis base

522‧‧‧Y-axis slide

523‧‧‧Y-axis servo motor

524‧‧‧Y-axis ball screw

531‧‧‧Z-axis base

532‧‧‧Z-axis slide

533‧‧‧Z-axis servo motor

534‧‧‧Z-axis ball screw

541‧‧‧Part insertion shaft

542‧‧‧θ-axis servo motor

543‧‧‧Mirror tube adsorption head

544‧‧‧Lens adsorption head

545‧‧‧Part insertion shaft

546‧‧‧Light blocking plate adsorption head

547‧‧‧Snap ring adsorption head

571, 572, 573, 574‧‧ ‧ beams

581, 581‧‧ ‧ rail

582‧‧‧Sliding parts

583‧‧‧Support board

621‧‧‧ cylinder

622‧‧‧ bearing

711‧‧‧ cylinder

712‧‧‧ bearing

721‧‧‧Servo motor

722‧‧‧Ball screw

B‧‧‧Mirror tube

B1‧‧‧ embedded holes

L1~L5‧‧‧ lenses

P1~P28‧‧‧Assembled position

S1~S4‧‧‧Light block

SR‧‧‧stop ring

T1~T8‧‧‧Loading tray mounting position

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a plan view showing the entire lens unit assembling apparatus provided with a pallet guiding device according to an embodiment of the present invention.

Figure 2 is an enlarged plan view showing the assembly station of the right end portion of the lens unit assembling device of Figure 1.

Figure 3 is an enlarged plan view showing the assembly station adjacent to the left side of Figure 2.

Figure 4 is a cross-sectional view taken along line A-A of Figure 2;

Figure 5 is a cross-sectional view taken along line B-B of Figure 2;

Figure 6 is a cross-sectional view taken along line C-C of Figure 3.

Figure 7 is an enlarged plan view of the pallet conveying device at the right end of Figure 2.

Fig. 8(a) is a cross-sectional view taken along line D-D of Fig. 7, and Fig. 8(b) is a cross-sectional view taken along line E-E of Fig. 8(a).

9(a) to 9(e) are explanatory views showing a procedure of assembling a lens unit of a lens unit assembling device provided with a pallet guiding device according to an embodiment of the present invention.

Form for implementing the invention

[lens unit assembly unit 1]

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Fig. 1 is a plan view showing the entire lens unit assembling apparatus 1 including a pallet guiding device according to an embodiment of the present invention. As shown in Fig. 1, a lens unit assembly device 1 according to an embodiment of the present invention is composed of 12 assembly stations of a first assembly station (1ST) to a twelfth assembly station (12ST), and is attached to a base portion 11 of a welded structure (see Figure 4 to Figure 6). The six assembly stations of the first assembly station (1ST) to the sixth assembly station (6ST) are formed at equal intervals to the right end to the left end of the lower side of FIG. Further, six assembly stations of the seventh assembly station (7ST) to the twelfth assembly station (12ST) are formed at equal intervals to the left end to the right end of the upper side of FIG. The 12 assembly stations of the first assembly station (1ST) to the twelfth assembly station (12ST) have the same basic structure, and the details are different.

As shown in Fig. 1, both the lower side and the upper side of Fig. 1 are formed with a linear lower side rail (first rail) 21 and an upper rail (second rail) 22 in parallel with each other from the right end to the left end of Fig. 1 . 14 rectangular plate-shaped assembly pallets 23 are disposed on the lower rail 21 and the upper rail 22 at equal intervals. The 14 assembly pallets 23 are guided by the lower rail 21 and the upper rail 22 while moving 1 The pitch and the assembly position of the predetermined step are carried out to sequentially transport the lens barrel to the assembly position of the subsequent step.

The assembly pallet 23 on the lower side is moved from the assembly position P1 of the right end of the lower rail 21 by one pitch to the assembly position P14 of the left end, and is respectively positioned at the assembly position of 14. Similarly, the assembly pallet 23 on the upper side is moved from the assembly position P15 of the left end of the upper rail 22 by one pitch to the assembly position P28 of the right end, and is respectively positioned at the assembly position of 14. A rolling element raceway surface (see FIGS. 8( a ) and 8 ( b )) 221 is formed on the entire length of the lower rail 21 and the upper rail 22 in the axial direction (the horizontal direction in FIG. 1 ). A slider 24 (see FIGS. 8(a) and 8(b)) is attached to the lower surface of the assembly pallet 23, and the slider 24 is guided by the lower rail 21 and the upper rail 22 to move. An infinite circulation path (not shown) through which the rolling elements (balls or rollers) 241 are scrolled is formed on the slider 24.

Once the slider 24 is guided by the lower rail 21 and the upper rail 22 When moving, the rolling elements in the slider 24 will roll along the rolling element raceway surfaces of the lower rail 21 and the upper rail 22, and the slider 24 will be smoothly moved. A small preload is applied between the rolling body track surface and the rolling bodies. Therefore, the slider 24 will be guided in a state where there is no backlash to the raceway surface of the rolling element, and the assembly pallet 23 is positioned at a predetermined position of all the assembly stations with high precision. Therefore, when the parts are assembled, it is not necessary to fix the slider 24 to the rolling element raceway surface by the clamping mechanism. Moreover, since the components are mounted on the guide rails, there is no need to separately configure the assembly station. Once the slider 24 is guided to move by the lower rail 21 and the upper rail 22, the rolling elements 241 of the slider 24 will roll along the rolling body raceway surface 221 of the lower rail 21 and the upper rail 22, and the slider 24 is caused. Smooth movements. The rolling element raceway surface 221 and the rolling body 241 are subjected to less pressurization. Therefore, the slider 24 can be guided in a state where the rolling element raceway surface 221 is not loosened, and the assembly pallet 23 is positioned with high precision for all the assembly stations.

The left end of the lens unit assembly device 1 is formed with a pallet transport device (first pallet transport device) 3A that can transport the assembly pallet 23 from the lower rail 21 to the upper rail 22. Further, a right end of the lens unit assembly device 1 is formed with a pallet transporting device (second pallet transporting device) 3B that can transport the assembly pallet 23 from the upper rail 22 to the lower rail 21. Therefore, the assembly pallet 23 that has completed the assembly work of the six assembly stations of the first assembly station (1ST) to the sixth assembly station (6ST) is transported from the lower rail 21 to the upper rail by the pallet conveyance device 3A. twenty two.

The assembly pallet 23 conveyed to the upper rail 22 is assembled in six assembly stations of the seventh assembly station (7ST) to the twelfth assembly station (12ST), and the lens unit is completed in the 12th assembly station (12ST). Assembly. In group 12 The assembled pallet 23 after assembly of the lens unit in the loading station (12ST) removes the completed lens unit from the self-assembling pallet 23. The assembly pallet 23, after the lens unit has been removed, is transported from the upper rail 22 to the lower rail 21 side by the pallet conveyor 3B, and the assembly work in the first assembly station (1ST) is resumed. That is, the assembly pallet 23 is cyclically moved between the lower rail 21 and the upper rail 22 in the clockwise direction, and is repeatedly used.

Since the pallet conveying devices 3A and 3B have the same structure, the detailed structure of the pallet conveying device (second pallet conveying device) 3B at the right end will be described, and the pallet conveying device (the first pallet conveying device) for the left end will be omitted. Detailed description of 3A. Figure 2 is an enlarged plan view showing the assembly station of the right end portion of the lens unit assembling device of Figure 1, Figure 7 is an enlarged plan view of the pallet conveying device 3B at the right end of Figure 2, and Figure 8(a) is a cross-sectional view taken along line DD of Figure 7. Fig. 8(b) is a cross-sectional view taken along line EE of Fig. 8(a). As shown in Fig. 2, Fig. 7, and Fig. 8, the pallet transporting device 3B is provided by a pallet carrying device 31 disposed on the upper portion of the upper rail 22, and a pallet loading device 32 disposed at a lower portion of the lower rail 21, and as shown in Fig. 2 The direction is formed by an elongated pallet shifting device 33. The pallet shifting device 33 is disposed between the upper rail 22 and the lower rail 21 .

The pallet shifting device 33 is constituted by a base portion 331 extending in the up-down direction of FIG. 2, and a stage 332 which is guided by the base portion 331 and moves downward in the direction of FIG. The stage 332 is driven by the servo motor 333, the ball screw 334, and a ball nut (not shown) to move up and down in FIG. A transport rail (second transport rail) 335 is attached to the stage 332 in parallel with the upper rail 22 and the lower rail 21 . The cross-sectional shape of the transport rail 335 is the same as that of the upper rail 22 and the lower rail 21, and a rolling body is formed over the entire length of the axial direction. Track surface. Moreover, the conveying guide 335 is formed to be slightly longer than the length of the assembly pallet 23 in the left-right direction.

When the stage 332 is positioned at the upper end position of FIG. 2, the upper rail 22 and the transport rail 335 are aligned on a straight line, and the assembly pallet 23 can be carried out from the upper rail 22 toward the transport rail 335 side. Further, once the stage 332 is positioned at the lower end position of FIG. 2, the lower rail 21 and the transport rail 335 are aligned on a straight line, and the assembly pallet 23 can be carried from the transport rail 335 toward the lower rail 21 side. The gap between the left side rails 22 and 335 in the left-right direction and the gap between the lower side rail 21 and the left and right direction of the transport rail 335 are set to be small, and the gap between the sliders 24 under the assembly pallet 23 is allowed to pass.

The pallet carry-out device 31 and the pallet loading device 32 are respectively attached with fork portions 311 and 321 which are movable on the branch in the horizontal direction of FIG. 2 and the vertical direction by the air cylinder. Once the stage 332 is positioned at the upper end position of FIG. 2, the fork portion 311 will move downward, and the assembly plate 23 at the assembly position P28 will be clamped from the left and right, and the fork portion 311 will move to the right again, and the upper side guide rail 22, the assembly pallet 23 is carried out toward the conveyance rail 335 side. The ball screw 334 is rotated by the servo motor 333, and the stage 332 is moved downward. Once positioned at the lower end position of FIG. 2, the fork portion 321 clamps the assembly pallet 23 from the left and right. The fork portion 321 is further moved to the left, and the assembly pallet 23 is carried from the conveyance rail 335 toward the lower rail 21 side to position the assembly pallet 23 at the assembly position P1.

Similarly, the pallet conveying device (first pallet conveying device) 3A at the left end can carry out the assembly pallet 23 at the assembly position P23 from the lower rail 21 toward the conveying rail (first conveying rail) side (not shown), and The assembly pallet 23 is loaded from the conveying guide toward the upper rail 22 side, and the assembly pallet 23 is positioned for assembly. Position P15.

[1st and 2nd assembly stations (1ST)]

The structure and assembly operation of the first assembly station (1ST) will be described below. Figure 2 is an enlarged plan view showing the assembly station of the right end portion of the lens unit assembling device of Figure 1. 4 is a cross-sectional view taken along line A-A of FIG. 2, and FIG. 5 is a cross-sectional view taken along line B-B of FIG. 2. The first assembly station (1ST) is an assembly station that supplies the lens barrel B (see FIG. 7(a)) to the assembly pallet 23 at the assembly position P2. As shown in FIG. 2, FIG. 4, and FIG. 5, the first assembly station (1ST) is composed of a component tray supply/discharge device 4, a component insertion device 5, an image detecting device 61, a pallet positioning device 62, and a pallet transport device 7. .

The component tray supply/discharge device 4 mounts a plurality of component trays 41 on the component tray supply and discharge device 4, and the component trays 41 accommodate a plurality of lens barrels at equal intervals. The component trays 41 on which the lens barrels are accommodated are placed on the carrier tray mounting positions T1, T2, T3, and T4 at the lower side 4, respectively. The carrier tray mounting positions T1, T2, T3, and T4 from the lower side 4 supply the component tray 41 in which the lens barrel is housed to the carrier tray mounting positions T5, T6 at the upper side 2, and the empty component tray 41 is to be emptied. The carrier tray mounting positions T7 and T8 are discharged to the lower side 2.

The part insertion device 5 is an automatic three-axis coordinate type automatic operation machine of the X-axis, the Y-axis, and the Z-axis, and is provided with a rotation axis θ axis around the Z-axis. That is, the component insertion device 5 is composed of the X-axis moving device 51, the Y-axis moving device 52, the Z-axis moving device 53, and the θ-axis rotating device 54. The Y-axis moving device 52 is disposed between the upper rail 22 and the lower rail 21 . The Y-axis moving device 52 is composed of a Y-axis base portion 521 extending in the left-right direction of FIG. 2 and a Y-axis slide table 522 that is guided by the Y-axis base portion 521 and moved in the left-right direction (Y-axis direction) of FIG. The Y-axis slide table 522 is a Y-axis servo motor 523, a Y-axis ball screw 524, and a steel not shown. Driven by the bead nut.

The X-axis moving device 51 is supported by the X-axis base portion 511 which is fixed to the Y-axis slide table 522 and extends in the up-down direction of FIG. 2, and is guided by the X-axis base portion 511 to move in the up-down direction (X-axis direction) of FIG. The X-axis slide table 512 is constructed. The X-axis slide table 512 is driven by an X-axis servo motor 513, an X-axis ball screw 514, and a ball nut not shown.

The Z-axis moving device 53 is guided by the Z-axis base portion 531 which is fixed to the X-axis slide table 512 and extends in the upper-lower direction (Z-axis direction) of FIG. 4, and can be guided by the Z-axis base portion 531 to the upper and lower directions of FIG. Z-axis direction) is composed of a moving Z-axis slide 532. The Z-axis slide table 532 is driven by a Z-axis servo motor 533, a Z-axis ball screw 534, and a ball nut not shown.

The θ-axis rotating device is rotatably supported by the Z-axis slide table 532, and is provided with a part insertion shaft 541 that extends in the upper-lower direction (Z-axis direction) of FIG. The part insertion shaft 541 can be rotationally driven by the θ-axis servo motor 542. At the lower end of the component insertion shaft 541, a vacuum suction lens barrel B is attached, and the lens barrel adsorption head 543 is transported from the component tray 41 toward the assembly tray 23. The lens barrel adsorption head 543 is formed of black synthetic resin (PEEK).

Since the X-axis base portion 511 has a large amount of extension in the X-axis direction of the Y-axis slide table 522, a support structure capable of suppressing deflection and vibration of the X-axis base portion 511 is employed. That is, two vertical pillars 55, 55, 56, and 56 are respectively fixed to the outer side of the lower rail 21 and the upper rail 22, and the upper ends of the pillars 55, 55, 56, and 56 are supported by the horizontal beam portions 571, 572, and 573. 574 and connected. Guide rails 581 and 581 are attached to the upper surfaces of the beam portions 571 and 572 which are parallel to the lower rail 21 and the upper rail 22, respectively. The sliders 582, 582 are guided by the guide rails 581, 581 and are oriented in the Y-axis direction. mobile. The upper ends of the vertical support plates 583, 583 attached to the sliders 582, 582 are coupled to the X-axis base portions 511, 511 and support the X-axis base portions 511, 511. Therefore, the deflection and vibration of the X-axis base portion 511 can be suppressed, and the high-precision positioning and high-speed operation of the component insertion device 5 can be realized.

The lens barrel B taken out from the component tray 41 by the lens barrel suction head 543 can perform image detection of the lens barrel B in the image detecting device 61 such as a CCD camera, and detects the orientation of the rotation direction of the lens barrel B. Then, the component insertion shaft 541 is rotationally driven by the θ-axis servo motor 542, and the lens barrel B is positioned in a predetermined rotational direction, and then carried into the assembly pallet 23. A clamp jig is placed on the assembly pallet 23, and the lens barrel B can be fixed to the clamp jig 231 by a spring force. The method of fixing the lens barrel B to the jig of the assembly pallet 23 can be carried out by sandwiching two fixing plates which are normally pressed by the spring force (not shown). When the fixing barrel B is inserted into the jig, the cylinder is driven to release the pressing of the spring. Once the cylinder is released, the clamp can fix the barrel B. Fig. 7(a) shows a state in which the lens barrel B has been fixed to the clamp jig 231 of the assembly tray 23.

As shown in FIGS. 2, 5, and 7, the pallet transporting device 7 is composed of a pallet engaging device 71 and a pallet intermittent feeding device 72. The pallet engaging device 71 is movable by the air cylinder 711 toward the upper and lower directions of FIG. 5 and is movable upward to be engaged with the assembly pallet 23. As shown in Fig. 5, the pallet conveying device 7 is configured to simultaneously transfer a plurality of assembly pallets 23 to the subsequent step, and is constituted by the pallet engagement device 71 and the pallet intermittent supply device 72. The pallet engaging device 71 is movable by the air cylinder 711 toward the upper and lower directions of FIG. 5 and is moved upward to engage with the assembly pallet 23. The pallet positioning devices 62, 62 will be assembled with the support The plate engaging device 71 collectively positions the assembly pallet 23 at a predetermined position on the lower side rail 21, moves toward the upper and lower directions of FIG. 5 by the air cylinder 621, and moves downward to be separated from the assembly pallets 23, 23. The front end of the piston rod of the cylinder 621 is provided with a bearing 622 which can be inserted into the recess of the assembly pallet 23 to position the assembly pallet 23.

The upper end of the piston rod of the cylinder 711 of the pallet engagement device 71 is provided with a bearing 712 which is arranged to be rotatable. Once the cylinder 711 is moved upward, the bearing is inserted or disengaged from the notch formed in the semi-cylindrical shape of the assembly pallet 23 (having substantially the same diameter as the bearing 712). The pallet engagement device 71 can simultaneously perform both the engagement and the detachment of the transport pallets 23 and 23 and the positioning during assembly. At the time of assembly of the components, the assembly pallet 23 is merely positioned by the action of both the pallet positioning device 62 and the pallet engagement device 71, and the assembly pallet 23 does not have to be clamped to the lower rail 21. The reason is as described above, the rolling elements 241 of the slider 24 can be rolled along the rolling element raceway surface 221 of the lower side rail 21 or the upper side rail 22, and the slider 24 can be smoothly moved. This is because the rolling element raceway surface 221 and the rolling element 241 are subjected to a small pressurization (see Fig. 8).

The pallet intermittent supply device 72 can move the pallet engagement devices 71 and 71 by only one pitch toward the inner side in the direction perpendicular to the paper surface of FIG. 5 by the servo motor 721, the ball screw 722, and the ball nut (not shown). As a result, the assembly pallet 23 at the assembly position P1 can be moved to the assembly position P2, and the assembly pallet 23 at the assembly position P2 can be moved to the assembly position P3. At the same time, the assembly pallet 23 at the assembly position P3 can be moved to the assembly position P4 of the second assembly station (2ST). The pallet positioning devices 62, 62 are moved by the cylinder toward the top of FIG. 5 and assembled with the pallet 23, 23 is engaged and the assembly pallets 23, 23 are positioned at the assembly positions P2, P3. Therefore, the assembly pallet 23 that has been carried into the lens barrel B by the component insertion device 5 at the assembly position P2 of the first assembly station (1ST) is moved to the assembly position P3 of the subsequent step. At the assembly position P3 of the first assembly station (1ST), the press-in operation of the lens barrel B is not required, so that the press-in operation is not performed.

The structure and assembly operation of the second assembly station (2ST) will be described below. Fig. 3 is an enlarged plan view showing a second assembly station (2ST) and a third assembly station (3ST) adjacent to the left side of Fig. 2. The second assembly station (2ST) can insert the lens L1 into the lens barrel B of the assembly tray 23 at the assembly position P4 (see FIG. 7(b)), and press the lens of the assembly tray 23 at the subsequent assembly position P5. Assembly station of L1 (refer to Fig. 7(c)). As shown in FIG. 3, FIG. 4, FIG. 5, and FIG. 6, the second assembly station (2ST) is supplied from the component tray supply/discharge device 4, the component insertion device 5, the image detecting device 61, the pallet positioning device 62, and the pallet conveying device. 7. The lens pressing device 8 is constructed. When the second assembly station (2ST) and the first assembly station (1ST) are structurally different, the lens press-in device 8 is attached to the second assembly station (2ST). Therefore, in the following description, the detailed description of the same portions as those of the first assembly station (1ST) will be omitted.

The component tray 41 of the component tray supply and discharge device 4 houses a plurality of lenses L1 at equal intervals. The part insertion device 5 is an automatic three-axis coordinate type automatic operation machine of the X-axis, the Y-axis, and the Z-axis, and is provided with a rotation axis θ axis around the Z-axis. The component insertion shaft 541 of the θ-axis rotating device can be rotationally driven by the θ-axis servo motor 542. A lens suction head 544 for transporting the lens L1 from the component tray 41 to the assembly tray 23 is attached to the lower end of the component insertion shaft 541. The lens adsorption head 544 is formed of black synthetic resin (PEEK). The image detection of the lens L1 can be performed with high precision.

The lens L1 taken out from the component tray 41 by the lens suction head 544 can perform image detection of the lens L1 in the image detecting device 61 such as a CCD camera, and detect the orientation of the rotation direction of the lens L1. Then, the θ-axis servo motor 542 is used to insert the component into the shaft 541 for rotational driving, and the lens L1 is positioned in the direction of the predetermined rotational direction, and then the assembly plate 23 of the assembly position P4 is loaded into the lens L1, and the Z-axis is controlled. The torque of the servo motor 533 is inserted into the lens barrel B with a small pushing force. Fig. 7(b) shows a state in which the lens L1 is inserted into the lens barrel B with a small pressing force. The lens L1 is in a state of being lightly placed at the entrance of the lens L1 fitting hole B1 of the lens barrel B. Since the lens L1 is inserted into the lens barrel B with a small pressing force, the synthetic resin lens adsorption head 544 is deformed without causing pressure loss, so that the problem that the lens L1 is inclined and the assembly accuracy is lowered can be avoided.

Then, the pallet conveying device 7 is actuated, the assembly pallet 23 at the assembly position P3 is moved to the assembly position P4, and the assembly pallet 23 at the assembly position P4 is moved to the assembly position P5. At the same time, the assembly pallet 23 at the assembly position P5 is moved to the assembly position P6 of the third assembly station (3ST). Therefore, at the assembly position P4 of the second assembly station (2ST), the assembly pallet 23 in which the lens L1 has been inserted into the lens barrel B by the component insertion device 5 is moved to the assembly position P5 of the second assembly station (2ST). . The lens press-in device 8 is disposed at the assembly position P5. As shown in FIGS. 4 and 6, the lens press-in device 8 is formed of a rectangular flat plate 81 horizontally mounted on the base 11 and a vertical column 82 mounted on the upper surface of the base plate 81, and is pivoted to the column 82. A member that can be moved in the vertical direction on the vertical plane is pressed into the shaft 83, and the cylinder 84 that can press the member into the shaft 83 in the vertical direction is formed. In the above-described lens press-in device 8, although the air cylinder 84 is used, a servo motor such as a stepping motor, an AC servo motor, or a DC servo motor may be used instead.

A lens pressing head 85 that can be pressed into the lens L1 is attached to the lower end of the part pressing shaft 83. The lens pushing head 85 is formed of a relatively hard metal and is ground to a surface. The pressure of the cylinder 84 is controlled to push the lens L1 of the assembly pallet 23 of the assembly position P5 with a large pushing force so that the lens L1 is adhered to the bottom surface of the hole B1 of the lens L1 of the lens barrel B. Fig. 7(C) shows a state in which the lens L1 is adhered to the bottom surface of the lens L1 of the lens barrel B to be fitted into the hole B1. The lens pressing head 85 which can push the lens L1 with a large pushing force toward the lens barrel B does not need to adsorb the lens L1 to detect the image of the lens L1, so that a hard metal whose surface is ground can be used. Therefore, even if the pressing force is pushed at a relatively high pressing speed and with a large pressing force, the lens pressing head 85 is not deformed by the pressure loss, and the assembly precision of the lens L1 can be stabilized. Moreover, the speed of the pressing lens L1 can be increased, so that the assembly time of the lens unit can be shortened.

[3rd to 12th assembly station (1ST)]

The structure and assembly operation of the third assembly station (3ST) will be described below. The third assembly station (3ST) can be inserted into the assembly station of the light blocking plate S1 (see FIG. 7(d)) toward the lens barrel B of the assembly pallet 23 at the assembly position P6. As shown in FIG. 1, FIG. 3, and FIG. 6, the third assembly station (3ST) and the first assembly station (1ST) have the same structure, and are supplied from the component tray to the discharge device 4, the component insertion device 5, and the image detecting device 61. The pallet positioning device 62 and the pallet conveying device 7 are configured. Therefore, in the following description, the detailed description of the same portions as those of the first assembly station (1ST) will be omitted.

The part tray 41 of the part tray supply and discharge device 4 is equally spaced A plurality of light blocking plates S1 are accommodated. The part insertion device 5 is an automatic three-axis coordinate type automatic operating machine of the X-axis, the Y-axis, and the Z-axis. The shape of the light blocking plate S1 is a shape symmetrical with respect to the direction of rotation, so that the part insertion device 5 is not provided with the axis of rotation θ around the Z axis. A light blocking plate suction head 546 that can be vacuum-adsorbed from the component tray 41 and transported from the component tray 41 to the assembly pallet 23 is attached to the lower end of the component insertion shaft 545 (see FIG. 6). The light blocking plate adsorption head 546 is formed of black synthetic resin (PEEK).

The light blocking plate S1 taken out from the part tray 41 by the light blocking plate adsorption head 546 is sent to the assembly plate 23 of the assembly position P6, and controls the torque of the Z-axis servo motor 533, and is pushed to the inside of the barrel B by a small push. The pressure is inserted into the light blocking plate S1. Fig. 7(d) shows a state in which the light blocking plate S1 has been inserted into the lens barrel B with a small pressing force. The outer diameter of the light blocking plate S1 is slightly smaller than the inner diameter of the lens barrel B, and constitutes a loose fit. Therefore, at the assembly position P7 of the third assembly station (3ST), the press-fitting operation of the light-blocking plate S1 is not required, so that the press-in operation is not performed.

The structure and assembly operation of the fourth assembly station (4ST) to the twelfth assembly station (12ST) are the same as those of the second assembly station (2ST) to the third assembly station (3ST). Therefore, only the outline of the assembly operation will be briefly described. That is, the fourth assembly station (4ST) can insert the lens L2 into the lens barrel B of the assembly tray 23 at the assembly position P8, and press the assembly station of the lens L2 of the assembly tray 23 at the subsequent assembly position P9. The fifth assembly station (5ST) is an assembly station in which the light-blocking plate S2 can be inserted into the lens barrel B of the assembly pallet 23 at the assembly position P10, and the assembly pallet 23 on the subsequent assembly position P11 is not assembled.

The sixth assembly station (6ST) can insert the lens L3 into the lens barrel B of the assembly tray 23 at the assembly position P12, and press the group into the subsequent assembly position P13. The assembly station of the lens L3 of the loading plate 23. The assembly pallet 23 that has completed the assembly work in the sixth assembly station (6ST) is transported to the left end assembly position P14 by the pallet transport device 7, and then the pallet transport device (first pallet transport device) 3A The lower side rail 21 is conveyed to the upper side rail 22. The seventh assembly station (7ST) transfers the assembly pallet 23 to the assembly position P17 via the assembly position P16 from the assembly position P15 at the left end by the pallet conveyance device 7. Then, the seventh assembly station (7ST) is an assembly station in which the light-blocking plate S3 is inserted into the lens barrel B of the assembly tray 23 at the assembly position P17, and the assembly pallet 23 on the subsequent assembly position P18 is not assembled.

The eighth assembly station (8ST) is inserted into the lens barrel L4 toward the lens barrel B of the assembly tray 23 at the assembly position P19, and is pressed into the assembly station of the lens L4 of the assembly tray 23 at the subsequent assembly position P20. The ninth assembly station (9ST) is an assembly station in which the light-blocking plate S4 can be inserted into the lens barrel B of the assembly pallet 23 at the assembly position P21, and the assembly pallet 23 on the splicing assembly position P22 is not assembled.

The 10th assembly station (10ST) is inserted into the lens barrel L5 toward the lens barrel B of the assembly tray 23 at the assembly position P23, and is pressed into the assembly station of the lens L5 of the assembly tray 23 on the subsequent assembly position P24. In the eleventh assembly station (11ST), the barrel B of the assembly pallet 23 at the assembly position P25 can be inserted into the stopper ring SR that has been sucked by the snap ring suction head 547 (see Fig. 7(e)). The snap ring SR is used to prevent the lens that has been mounted on the lens barrel B from being detached from the lens barrel B. Moreover, the height of the completed lens unit can be detected on the assembly pallet 23 of the subsequent assembly position P26. Fig. 7(e) shows the lens unit of the finished product in which all the parts have been mounted on the lens barrel B. The assembly between Figure 7(d) and Figure 7(e) has been omitted. An illustration of the steps. The 12th assembly station (12ST) can remove the qualified lens unit from the assembly pallet 23 of the self-assembly position P27, and then carry out the qualified component tray 41 of the discharge device 4 to the component tray, and remove the unqualified lens. The unit is moved to the assembly station where the defective component tray 41 is carried out.

After the self-assembling pallet 23 removes the lens unit that has been completed in the 12th assembly station (12ST), the assembly pallet 23 of the assembly position P27 is moved to the assembly position P28 by the borrowing plate transporting device 7, and then the borrowing plate is used. The transport device (second pallet transport device) 3B is transported from the upper rail 22 toward the lower rail 21 side, and the assembly work in the first assembly station (1ST) is resumed, and the initial steps of the assembly operation are repeated. . By providing the lens unit assembly device of the above-described circulating pallet guide device, the linear first guide rail and the second guide rail provided with a plurality of assembly stations can be parallel to each other, and the assembly pallet can be cyclically moved. The assembly pallet is reused between the first rail and the second rail.

Therefore, compared with the case where the assembly apparatus is arranged in a straight line shape, the total length of the assembly apparatus can be reduced to approximately half, so that it is possible to easily ensure a plant having a space in which the assembly apparatus can be installed. Moreover, the total length of the guide rail for guiding the assembly pallet is reduced to half, which is sufficient for use, so that it is not necessary to connect a plurality of guide rails, the connection work time of the guide rail can be reduced, and the accuracy of the guide rail can be easily ensured. Further, since the length of the first pallet conveying device and the second pallet conveying device that can circulate and move the assembly pallet between the first rail and the second rail can be shortened, the cycle of assembling the pallet can be reduced. Time and shorten the time of the week.

[Other Embodiments]

Both the lower side rail 21 and the upper rail 22 are one piece. However, if the group If the product is large, the assembly pallet 23 will increase, so it can also be composed of two parallel guide rails. Further, the assembly pallet can be transported from the upper rail 22 toward the lower rail 21 side or from the lower rail 21 side toward the upper rail 22 side by the pallet transport device. However, the above transfer can also be carried out by various automatic operating machines such as a vertical articulated automatic operating machine and a scaled automatic operating machine. Further, the pallet transporting apparatus for transporting the pallets may transfer a plurality of assembly pallets at the same time as the transporter, but may be a so-called self-flow type transporting apparatus that can be randomly transferred. In this case, a braking mechanism that can position the assembly pallet at a predetermined assembly position is required.

1ST~12ST‧‧‧1st assembly station~12th assembly station

3A, 3B‧‧‧ pallet conveyor

21‧‧‧Lower side rail

22‧‧‧Upper side rail

23‧‧‧Packing pallets

B‧‧‧Mirror tube

L1~L5‧‧‧ lenses

P1~P28‧‧‧Assembled position

S1~S4‧‧‧Light block

SR‧‧‧stop ring

Claims (3)

A pallet guiding device for an assembling device is provided with a conveying device capable of conveying an assembly to an assembly position of a step of connecting from a predetermined assembly position, wherein the conveying device is composed of the following parts: a straight line One of the guide rails is formed in a straight line shape, and a rolling body raceway surface is formed on the entire length of the axial direction for the rolling elements to roll; the sliding member is formed with an infinite circulation path for the rolling body to circulate and roll, and the rolling is maintained. And rolling the rolling element on the rolling element raceway surface in a state where a preload is applied to the rolling element raceway surface; the pallet is assembled, mounted on the slider, and mounted to hold the aforementioned An assembly jig of the assembly, wherein the assembled product can be transported from the assembly position of the predetermined step to the assembly position of the subsequent step along the guide rail; the pallet transport device can sequentially drive the assembly pallet along the guide rail The assembly position from the assembly position of the predetermined step to the subsequent step; and the positioning device can be assembled at the assembly steps of the foregoing steps The assembly pallet is positioned at a predetermined position on the rail, and the rail includes a first rail and a second rail, and the pallet conveyance device sequentially transports the first rail and the second rail toward the respective assembly positions. The aforementioned assembly pallet, The first pallet transporting device is formed at one of the axial ends of the first rail and the second rail, and the assembly pallet can be transported from the first rail to the second rail, and the second pallet transporting device is formed in the foregoing The other end of the first rail and the second rail in the axial direction can transport the assembly pallet from the second rail to the first rail, and the linear first conveyor rail is formed on the first pallet conveyor. The assembly pallet is arranged in a straight line on the first rail, and is carried out from the first rail, and the assembly pallet is arranged in a line in the second rail, and is carried in the second rail, and is linearly The second transport rail is formed in the second pallet transport device, and the assembly pallet is arranged in a line in the second rail, and is carried out from the second rail, and the assembly pallet is arranged on the first rail. a straight line is carried into the first guide rail, and the assembly pallet is circulated and moved between the first rail and the second rail, and the assembly position of each step is along the first rail and the second guide And the trays are arranged at equal intervals, and the pallet conveying device can simultaneously transport the assembly pallets of the foregoing steps, and the assembly jig can mount the lens and the light blocking plate to the lens barrels constituting the lens unit in the order of steps to assemble the lens unit. . The pallet guiding device of the assembling device of claim 1, wherein the first pallet conveying device includes: a first pallet loading device, and the first rail is movable from the first rail to the first The assembly pallet is carried out on the feeding rail side; the second pallet loading device can carry the assembly pallet from the first conveyor rail toward the second rail side; and the first pallet shifting device can be used in the first rail Moving the first transport rail between the second rail; the second pallet transporting device includes a third pallet loading device, and the assembly pallet can be carried out from the second rail toward the second transport rail side; The fourth pallet loading device can carry the assembly pallet from the second conveyor rail toward the first rail side; and the second pallet shifting device can move the second rail between the second rail and the first rail The second conveyor guide. The pallet guiding device of the assembling device of claim 1, which is provided with: a lens insertion device, which can insert the lens into the lens barrel on the assembly jig by a small pressing force; and the lens pressing device can The pressing force greater than the aforementioned pressing force pushes the aforementioned lens inserted into the lens barrel, and presses the lens into a predetermined position in the lens barrel.