JPH04289036A - Assembly carrying mechanism - Google Patents

Abstract

PURPOSE:To dissolve stagnation at the corner succession unit C and surely stop a work supporting base 10 under the assembling robot T part of an assembly carrying mechanism by constituting the mechanism so as to perform succession on a corner part with a corner succession unit C, when a framework is constituted so as to return again the work supporting base 10 to the initial position of a line in a carrying conveyor constituting the assembling line for an electronic product or an electronic part. CONSTITUTION:It is constituted so that a plurality of work supporting bases 10 can be loaded on a transport belt 15 of a corner succession unit C, an assembling position guide rail 4 is arranged under the assembling robot T part of a linear conveyor A, and the work supporting base 10 is lifted up to the position not to contact it with a conveyor belt 8 and stopped.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembly and transport mechanism for assembling electrical products, mechanical parts, etc. using an unmanned assembly machine while transporting them in an assembly line manner.

0002

2. Description of the Related Art Conventionally, as an assembly and conveyance mechanism for assembling electrical products and mechanical parts, a mechanism equipped with a linear conveyor, a corner transfer unit, and an orthogonal linear conveyor has been known.

0003

[Problem to be Solved by the Invention] However, in the conventional technique, the corner transfer unit is configured to transport workpiece supports one by one. There was a problem that the assembly flow was not smooth due to stagnation. In addition, when parts are assembled by an assembly robot after being conveyed a certain distance by a conveyor, the workpiece supports are removed one by one from the conveyor and kept in a fixed state.
It was assembled using an assembly robot. The present invention separates a plurality of workpiece support stands from the conveyor at the same time,
The structure is such that a plurality of workpiece support stands can be assembled at the same time in the separated state. This allows multiple products to be assembled at once, resulting in a smooth assembly line flow.

0004

[Means for Solving the Problems] The problems to be solved by the present invention are as described above, and next, the means for solving the problems will be explained. That is, the conveyors constituting the assembly conveyance line are constructed into a square frame consisting of a linear conveyor A, an orthogonal linear conveyor B, and a corner transfer unit C, and workpieces are transferred from the linear conveyor A to the orthogonal linear conveyor B at the corners of the rectangular framework. In order to inherit the support stand 10, the corner inheritance unit C is
The corner transfer unit C is rotatable by 0 degrees, and after arranging a plurality of work support stands 10 on the conveyor, the corner transfer unit C is rotated by 90 degrees.
It is designed to rotate. Further, a conveyor belt 8 is disposed on a linear conveyor A constituting an assembly conveyance line, and a work support table 10 is placed on the conveyor belt 8, and is slightly smaller than the conveyor belt 8. An assembly position guide rail 4 that protrudes upward is provided, and the length of the assembly position guide rail 4 is set to the workpiece support base 1.
A push actuator 9 is arranged below the linear conveyor B to push and place a work support stand 10 on the assembly position guide rail 4.

[0005]

[Operation] Next, the operation of the present invention will be explained. The assembly and conveyance mechanism of the present invention uses a linear conveyor A, a corner transfer unit C, and an orthogonal linear conveyor B to control the flow of the workpiece support 10 into 9
It is possible to turn 0 degrees, and by arranging two orthogonal straight conveyors B, two straight conveyors A, and four corner transfer units C in order, a square framework can be constructed. From the initial position of the square framework,
A workpiece support 10 is placed on the conveyor belt 8, a product base 6 is placed on the workpiece support 10, and then the assembly part 5 is inserted as shown in FIG. After the assembly is completed, the product is taken out from the workpiece support 10, and the workpiece support 10 is configured to flow back to the first line from the return side linear conveyor A or perpendicular linear conveyor B.

[0006]

[Example] Next, an example of the present invention will be described. FIG. 1 is a plan view of the assembly and conveyance mechanism of the present invention, FIG. 2 is a side view, and FIG. 3
is also a front view of only the corner inheritance unit C,
FIG. 4 is a front sectional view of the orthogonal linear conveyor B, and FIG. 5 is a side view of the orthogonal linear conveyor B. Figure 1
, the orthogonal straight conveyor A part is shown short and the straight line conveyor B part is shown long, but in reality the straight conveyor A part is long and the orthogonal straight conveyor B part is shorter. . The linear conveyor A integrates the left and right linear conveyors A, and has a T-shaped configuration as shown in FIG. Conveyor support stands 12 are provided at three locations in the lower part, and the conveyor support stands 12 are connected and reinforced by reinforcing channels 13, 13, . . . . A workbench 14 is provided on the conveyor support stand 12, and the workbench 1
4, conveyor belt support channels 1 and 2 and assembly robot support channels 3 and 4 are placed in parallel. Left and right conveyor belts 8 are arranged between the conveyor belt support channels 1 and 2. Further, the bases of various assembly robots are fixed to the assembly robot support channels 3 and 4. Both the conveyor belt support channels 1 and 2 and the assembly robot support channels 3 and 4 have cross-sectional shapes that allow easy locking of bolts and nuts, and draw-out aluminum channels are used.

A perpendicular linear conveyor B is shown in FIGS. 1 and 2, and the orthogonal linear conveyor B has a workpiece supporting table 10 from one linear conveyor A to the other linear conveyor A.
The main role is to recirculate water, and there is little possibility that an assembly robot will be attached to it, so the assembly robot support channel 3
- The section 4 is not provided, and only the conveyor belt support channels 1 and 2 and the conveyor belts 8 and 8 are arranged. The corner inheritance units C are arranged at each corner in one assembly and conveyance mechanism, so a total of four corner inheritance units C are arranged. Each corner inheritance unit C is the same, and is provided with a 90-degree rotation motor 19, a conveyor belt 15, a drive motor 21 for the conveyor belt 15, and the like.

FIG. 6 is an enlarged side view of the linear conveyor A, and FIG.
is a front sectional view showing the drive mechanism of the conveyor belt 8, FIG.
is an enlarged front sectional view showing the tension mechanism of the conveyor belt 8;
FIG. 9 is an enlarged front sectional view of the belt sliding guide 17. As shown in FIG. The conveyor belt 8 has a conveyor belt support channel 1.
2, and are driven by a drive motor 20. As shown in FIG. 7, a chain is wound around the sprocket 27 on the motor shaft of the drive motor 20 to drive the sprocket 24 on the pulley shaft 23. The rotation of the pulley shaft 23 causes the drive pulley 22.
22 is rotated. Conveyor belts 8, 8 are wound around the drive pulleys 22, 22. A tensioning mechanism 18 for tensioning the conveyor belt 8 is constructed. Tension pulleys 16, which can be pulled by bolts, are provided in the tension mechanism 18, and tension the conveyor belt 8, which is hung on the driven pulley 25. Also, from the conveyor belt support channels 1 and 2 to the conveyor belt support channel 1
2 is provided protrudingly, and the conveyor belt 8 is placed on the belt sliding guide 17. Further, a workpiece support sensor 28 is provided to protrude from the conveyor belt support channel 2 .

FIG. 10 is a front view of the corner transfer unit C, FIG. 11 is a partially sectional side view, FIG. 12 is a side view of the corner transfer unit C, and FIG. 13 is a plan view of the corner transfer unit C. The corner transfer unit C is placed at the corner of the part where the linear conveyor A and the orthogonal linear conveyor B run perpendicularly to each other, and normally there is a corner transfer unit interposed therebetween that conveys the product continuously and in an arc shape. ,
A conveyor that conveys the workpiece in an arc shape from the linear conveyor A to the orthogonal linear conveyor B while rotating the workpiece support table 10 by 90 degrees is expensive. In the present invention, by directly rotating the conveyor belt 15 by 90 degrees using the capacity of a linear conveyor, corner transfer is possible without using an arcuate conveyor. However, since it takes time to rotate the conveyor belt 15 by 90 degrees and return it again, if the workpiece support tables 10 were conveyed one by one, the workpiece support tables 10
Therefore, in the present invention, the two workpiece supports 10 are placed on the conveyor belt 15, and the two workpieces are conveyed together.

When the corner transfer unit C detects that the two units are conveyed onto the conveyor belt 15 by the 90 degree rotation motor 19, the rotation of the conveyor belt 15 is stopped and the corner transfer unit C rotates 90 degrees. , orthogonal linear conveyor B and conveyor belt 15
With the conveyor belts 15 aligned in a straight line, the conveyor belt 15 is then rotated by the drive motor 21, and the workpiece support platform 10 on the conveyor belt 15 is transferred to the orthogonal linear conveyor B. After the handover is completed, the conveyor belt 15 is turned 90 degrees again by the 90 degree rotation motor 19, and waits for the two workpiece support tables 10 to be placed on the conveyor belt 15. The conveyor belt 15
In the section, two workpiece detection switches 29 and 30 are installed to detect whether or not two workpiece support stands 10 are placed.
is located. Furthermore, rollers 31 are supported to ensure smooth transfer from the linear conveyor A to the conveyor belt 15 and from the conveyor belt 15 to the orthogonal linear conveyor B.

FIG. 14 is a plan view of the position where the assembly robot performs assembly work, FIG. 15 is a side view, and FIG. 19 is the same as that shown in FIG.
FIG. 20 is a cross-sectional view taken along line CC in FIG. 14, FIG. 21 is a cross-sectional view taken along line A-A in FIG. 14. In FIGS. 14 and 15, an assembly robot T is placed above the part of the workpiece support table 10 indicated by a solid line. Below the assembly robot T, four sets of workpiece support tables 10 are fixed and assembled. It is configured to do the work. During assembly by the assembly robot T, the workpiece support stand 10 needs to be stopped, so the workpiece support stand 10 is removed from the conveyor belt 8 so that the workpiece support stand 10 does not come into contact with the conveyor belt 8 at this position. An assembly position guide rail 4 for floating is provided in a protruding manner as shown in FIG. Further, at the position below the assembly robot T, the workpiece support stand 10 is not in contact with the conveyor belt 8, so the workpiece support stand 10 is moved by the conveyor belt 8.
Therefore, a separate push actuator 9 is provided to push the four workpiece support stands 10 under the assembly robot T at the same time.

[0012] Furthermore, at the stage before the assembly position guide rail 4, it is first necessary to confirm that the four workpiece support stands 10 are staying, and the workpiece sensors 32 and 7 confirm that the four workpiece support stands are lined up. It is configured to detect. Then, when it is detected that all the workpieces under the assembly robot T have been assembled, the push actuator 9 is placed upward from the transfer rod 35 at the tip thereof by the distance corresponding to the distance between the four workpiece support stands 10. The locking bodies 33 and 34 are transferred simultaneously, and the four workpiece support stands 10 are moved simultaneously by the assembly robot T.
It pushes downward. By pushing the push actuator 9, the four workpiece support stands 10 after assembly are simultaneously pushed out to the next stage. As shown in FIGS. 21 and 19, the locking bodies 33 and 34 are constituted by solenoids, and when the workpiece support 10 for the next assembly is transported, the locking bodies 33 and 34 are engaged. It is controlled so that it retracts so that it does not overlap, and only protrudes when it is to be pushed out next time. Further, as shown in FIG. 19, the workpiece support stand 10
A stop solenoid 36 is arranged so that the tip of the robot temporarily stops in front of the assembly robot T.

FIG. 16 is a drawing showing the assembly robot T1 that places the product base 6 on the work support table 10, FIG. 17 is a front view of the assembly robot T2 that inserts the assembly part 5 into the product base 6, and FIG. FIG. The product base 6 is placed on the workpiece support stand 10, and the holding arm 38 of the assembly robot T1
・Pinch and convey by 38 and place it. Next, assembly part 5
The assembly robot T2 inserts the assembly parts 5 from above and assembles them by sealingly joining them. The bases of the assembly robots T1 and T2 are fixed to the conveyor belt support channel 1 and the assembly robot support channel 3. In FIG. 16, an actuator 39 operates the holding arms 38, 38, and 40, 41 are linear sliders. Further, in FIGS. 17 and 18, 42 is an actuator that moves the assembly part 5 up and down, and 43 and 44 are linear sliders.

[0014]

[Effects of the Invention] Since the present invention is constructed as described above, the following effects are achieved. That is, with the configuration as claimed in claim 1, there is no need to configure the corner transfer unit C with an arcuate conveyor as in the conventional case, and the drive system can be configured compactly. Furthermore, by configuring the corner transfer unit C to be forcibly driven, it was possible to eliminate the retention of the workpiece support stand 10 at the corner portion. In addition, since the corner transfer unit C is configured to change the direction of multiple workpiece support stands 10 at once, the corner transfer unit C can be moved back and forth more easily than in the case of one work support stand at a time. It has become.

Furthermore, since the structure is configured as in claim 2, there is no need to provide a mechanism for stopping the conveyor below the assembly robot T, and the plurality of workpiece supports 10 are moved and fixed only by the expansion and contraction action of the push actuator 9. This makes it possible to simply configure the entire assembly and transport mechanism. Furthermore, even when the workpiece support 10 is stopped under the assembly robot T, the conveyor belt 8 continues to rotate, so there is no need to control the conveyor belt 8 to stop or start. .

[Brief explanation of the drawing]

FIG. 1 is a plan view of an assembly conveyance mechanism of the present invention.

FIG. 2 is a side view as well.

FIG. 3 is a front view of only the corner inheritance unit C. FIG.

FIG. 4 is a front sectional view of a portion of the orthogonal linear conveyor B. FIG.

FIG. 5 is a side view of a portion of the orthogonal linear conveyor B.

FIG. 6 is an enlarged side view of the linear conveyor A.

7 is a front sectional view showing a drive mechanism for the conveyor belt 8. FIG.

FIG. 8 is an enlarged front sectional view showing the tensioning mechanism of the conveyor belt 8. FIG.

FIG. 9 is an enlarged front sectional view of the belt sliding guide 17. FIG.

FIG. 10 is a front view of the corner inheritance unit C.

FIG. 11 is a side view partially in section.

FIG. 12 is a side view of the corner inheritance unit C.

FIG. 13 is a plan view of the corner inheritance unit C.

FIG. 14 is a plan view of a position where an assembly robot performs assembly work.

FIG. 15 is a side view as well.

FIG. 16 is a drawing showing an assembly robot T1 that places a product base 6 on a workpiece support table 10.

17 is a front view of an assembly robot T2 inserting an assembly part 5 into a product base 6. FIG.

FIG. 18 is a side view as well.

FIG. 19 is a cross-sectional view taken along the line CC in FIG. 14;

20 is a sectional view taken along the line BB in FIG. 14; FIG.

21 is a cross-sectional view taken along the line AA in FIG. 14; FIG.

[Explanation of symbols]

A Straight conveyor B Direct straight conveyor C Corner inheritance unit 1, 2 Conveyor belt support channel 3,4 Assembly robot support channel 5 Assembling parts 6 Product base 7, 32 Work sensor 8 Conveyor belt 9 Push actuator 10 Work support stand

Claims (2)

[Claims] Claim 1: The conveyors constituting the assembly conveyance line are constructed into a square frame consisting of a linear conveyor A, an orthogonal linear conveyor B, and a corner transfer unit C. In order to inherit the work support stand 10 to B, the corner inheriting unit C is made rotatable by 90 degrees, and the corner inheriting unit C
An assembly and conveyance mechanism is characterized in that it is configured to rotate 90 degrees after a plurality of workpiece support stands 10 are placed on a conveyor. 2. A conveyor belt 8 is disposed on a linear conveyor A constituting an assembly conveyance line, and a work support table 10 is placed on the conveyor belt 8. An assembly position guide rail 4 is provided that protrudes slightly upward, and the length of the assembly position guide rail 4 is such that a plurality of workpiece support stands 10 can be placed continuously. An assembly and conveyance mechanism characterized in that a push actuator 9 for pushing and placing a workpiece support table 10 is disposed below a linear conveyor A.