JPH10151532A - Work assembly method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To extensively reduce an occupied area required for assembly of a work smaller than ever as well as to certainly reduce manufacturing processes concerning a work assembly method to assemble the work in a state of reversing a surface and a back of the work. SOLUTION: When a first work 19A and a second work 19B are reciprocally and continuously carried and the first work 19A arrives at a specified position, carriage of the first work 19A is temprarily stopped, the first work 19A is removed from a work holder 15 and is sided from a carrier passage 15, after the surface and the back of the first work 19 are reversed, when the second work 19B carried immediately after the first work 19A arrives at the specified position, the first work 19 is held on the work holder 15 on which the second work 19B is held, and the first work 19A and the second work 19B are assembled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work assembling method for assembling a work having the same shape with its front and back reversed.

[0002]

2. Description of the Related Art Generally, a plate-shaped tube through which a heat medium flows is widely used in an evaporator of an automobile.

[0003] Such a tube is formed by assembling a pair of tube sheets 1A, 1B having the same shape as shown in Fig. 12 such that the side surfaces 1a, 1b on the concave side face each other. FIG. 13 shows such a method of assembling the tube sheets 1A and 1B. In the method of assembling the tube sheets 1A and 1B, the tube sheets 1A and 1B press-formed by a press machine are arranged in parallel. The first conveyor 3 and the second conveyor 5 are separated and conveyed at the same time.

[0004] These tube sheets 1A, 1
B denotes a third position in which the tube sheet 1A conveyed by the first conveyor 3 is disposed so as to be perpendicular to the first conveyor 3.
A fourth conveyor 9 which is moved in parallel with the third conveyor 7 while being moved to the conveyor 7 and simultaneously being conveyed by the second conveyor 5 with the tube sheet 1B turned upside down.
After being moved to the tube sheet 1 on the fourth conveyor 9
B is superimposed on the tube sheet 1A on the third conveyor 7.

In the above-described method of assembling the tube sheets 1A and 1B, the tube sheet 1B conveyed by the second conveyor 5 is turned upside down and the fourth conveyor 9 is turned upside down.
Therefore, the side surfaces 1a and 1b on the concave side of the tube sheets 1A and 1B can be assembled so as to face each other.

[0006]

However, according to the above-described method of assembling the tube sheets 1A and 1B, the tube sheets 1A and 1B conveyed simultaneously by the third and fourth conveyors 7 and 9 arranged in parallel. Of these, the tube sheet 1B on the fourth conveyor 9 with the front and back reversed is superimposed on the tube sheet 1A on the third conveyor 7, so that two conveyors need to be arranged, occupying a large area. was there.

Further, the tube sheet 1 which is simultaneously conveyed by independent third and fourth conveyors 7 and 9 is provided.
Since A and 1B are superimposed on each other, there is a problem that if the conveying speed of either one of the tube sheets 1A and 1B is shifted, the predetermined assembly of the tube sheets 1A and 1B may not be performed. Furthermore, tube sheet 1
Since A and 1B are conveyed by the first conveyor 3, the second conveyor 5, the third conveyor 7, and the fourth conveyor 9, the in-process quantity of the tube sheets 1A and 1B increases, and the management of the manufacturing process is improved. There was a problem that it became complicated.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and can surely reduce the number of manufacturing steps, and occupy a larger area for assembling a work than before. It is an object of the present invention to provide a work assembling method that can be reduced.

[0009]

According to a first aspect of the present invention, there is provided a workpiece assembling method for assembling a first workpiece and a second workpiece having the same shape in a state where the first workpiece and the second workpiece are turned upside down. The first work and the second work are held by a work holder and are conveyed alternately and continuously on the same conveyance path. When the first work reaches a predetermined position, the first work is After temporarily stopping the transfer, removing the first work held by the work holder from the work holder, retracting the first work from the transfer path, and turning the first work upside down. When the second work conveyed immediately after the first work by the start of conveyance reaches a predetermined position,
The transportation of the second work is temporarily stopped, the first work is held by the work holder holding the second work, and the first work and the second work are assembled. It is characterized by the following.

According to a second aspect of the present invention, in the method for assembling a workpiece according to the first aspect, the first workpiece and the second workpiece are arranged such that an inflow portion and an outflow portion of a heat medium have the same direction. Characterized in that it is a tube sheet of an evaporator formed in (1).

(Operation) In the work assembling method according to the first aspect, the first work and the second work are alternately and continuously conveyed along the same conveyance path while being held by the work holder. When the first work reaches a predetermined position, the transfer of the first work is temporarily stopped, the first work is removed from the work holder, and is retracted from the transfer path, and then the first work is turned upside down.

Then, the transfer of the second work is started,
When the second work conveyed immediately after the first work reaches a predetermined position, the conveyance of the second work is temporarily stopped, and the second work is retreated from the conveyance path to the work holder holding the second work. The first work that has been performed is held, and the first work and the second work are assembled in a state where the first work and the second work are turned upside down.

[0013] In the work assembling method according to the second aspect, the pair of tube sheets, in which the inflow portion and the outflow portion of the heat medium are formed in the same direction, are assembled with the side surfaces on the concave side facing each other.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment (corresponding to claims 1 and 2) of a work assembling method according to the present invention will be described below in detail with reference to the drawings.

In the work assembling method of this embodiment, as shown in FIGS. 1 and 2, the work is moved along a track of a transfer rail (transport path) 15 fixed to the upper surface of the gantry 11 via a support post 13. A first work 19A and a second work 19B which are held by a holder 17 and conveyed continuously and alternately are provided with a work assembling device 21 arranged on the upper surface of the gantry 11.
By this, it is assembled with the front and back reversed.

In this embodiment, the first work 19A and the second work 19B are tube sheets 19 of an evaporator as shown in FIG. 3 (corresponding to claim 2). 19 are assembled in a state where the side surfaces 19a on the concave side face each other,
A tube T having an inflow portion 19b and an outflow portion 19c of the heat medium in the same direction is formed.

The above-described work assembling apparatus 21 has a work reversing machine 23 arranged to face the transport rail 15. This work reversing machine 23 has a slide rail 25
And is movable in the direction of the transport rail 15. Also, the work reversing machine 23
Has an arm support base 27 arranged on the upper surface of the slide rail 25.

A cylindrical cylinder 29 is disposed on the upper surface of the arm support pedestal 27, and a telescopic rod 31 that expands and contracts up and down is accommodated inside the cylinder 29. A work holding arm 33 is disposed at the upper end of the telescopic rod 31. At both ends of the work holding arm 33, a pair of arm portions 33a protruding toward the transport rail 15 are formed to face each other. .

A pair of air cylinders 35 are disposed opposite to each other on the inner surfaces of the arm portions 33a, and a work gripping chuck 39 is attached to the tip of a cylinder rod 37 of the air cylinder 35. I have. Hereinafter, the work assembling method of this embodiment will be described step by step. First, when the first work 19A held and transported by the work holder 17 reaches the front of the work holding arm 33 of the work reversing machine 23 as shown in FIGS. 1 and 2,
The transport of the first work 19A is temporarily stopped.

Next, as shown in FIG.
3 is moved to the side of the transport rail 15, and as shown in FIG.
After the cylinder rod 37 of the air cylinder 35 is extended toward the first work 19A, the first work 19A is held by the work holding chuck 39.

In this state, as shown in FIG. 6, after the telescopic rod 31 of the cylinder 29 is extended upward and the first work 19A is removed from the work holder 17, the work is turned over as shown in FIG. The machine 23 is moved to the opposite side to the transport rail 15 and the first work 19A is retracted from the transport rail 15 side. Next, as shown in FIG. 8, the first workpiece 19A is
Rotated 80 degrees.

That is, the first work 19A is retracted from the transport rail 15 in a state where the first work 19A is turned upside down by the operations shown in FIGS. Next, as shown in FIG. 9, the start of the transfer of the second work 19B causes the second work 19 to be transferred immediately after the first work 19A.
When B reaches the front of the work holding arm 33 of the work reversing machine 23, the conveyance of the second work 19B is temporarily stopped again.

In this embodiment, as shown in FIG. 10, the work reversing machine 23 is moved to the side of the transport rail 15, the telescopic rod 31 is accommodated in the cylinder 29, and the first work 19A is mounted on the work holder 17. Is held, the work reversing machine 23 moves the transfer rail 15 as shown in FIG.
And the assembly of the first work 19A and the second work 19B is completed.

In the above-described work assembling method, the preceding first work 19A is detached from the work holder 17, retracted from the transport rail 15, and after the first work 19A is turned upside down, the first work 19A is removed. The first work 19A is held by the work holder 17 holding the second work 19B to be transported next, and the first work 19A and the second work 19B are turned upside down. Since the assembly is performed in the state, the manufacturing process can be reliably reduced, and the occupied area required for assembling the work can be significantly reduced as compared with the related art.

In the above-described work assembling method, as shown in FIG. 3, the heat medium inflow portion 19b and the heat medium outflow portion 19c are provided.
Is formed in the same direction as the tube sheet 19,
The tubes T composed of the pair of tube sheets 19 can be formed easily and reliably because the side surfaces 19a on the concave side face each other. In the embodiment described above, the first work 19 </ b> A held by the work holding chuck 39 of the work reversing machine 23 is set to 1
Although the example in which the conveyance of the second work 19B is stopped after rotating by 80 degrees has been described, the present invention is not limited to this embodiment, and the work gripping is performed after the conveyance of the second work 19B is stopped. The first gripped by the chuck 39
The first work 19A can be rotated simultaneously with the movement of the work reversing machine 23 shown in FIG.

[0026]

As described above, in the work assembling method according to the first aspect, after the first work is removed from the work holder and retracted from the transport path, the first work is turned over. A state in which the first work is held by the work holder holding the second work conveyed immediately after the first work, and the first work and the second work are inverted. As a result, the manufacturing process can be reliably reduced, and the occupied area required for assembling the workpiece can be significantly reduced as compared with the related art.

According to the second aspect of the present invention, the tube sheet in which the inflow portion and the outflow portion of the heat medium are formed in the same direction is assembled in a state where the side surfaces on the concave side face each other. Therefore, a tube composed of a pair of tube sheets can be easily and reliably formed.

[Brief description of the drawings]

FIG. 1 is a top view showing a work assembling apparatus to which a work assembling method of the present invention is applied and the vicinity thereof.

FIG. 2 is a side view showing a work assembling apparatus to which the work assembling method of the present invention is applied and the vicinity thereof;

FIG. 3 is an exploded perspective view showing a tube sheet of an evaporator used in the work assembling method of the present invention.

FIG. 4 is a side view for explaining the operation of the work assembling method of the present invention.

FIG. 5 is a top view for explaining the operation of the work assembling method following FIG. 4;

FIG. 6 is a side view for explaining the operation of the work assembling method following FIG. 5;

FIG. 7 is a side view for explaining the operation of the work assembling method following FIG. 6;

FIG. 8 is a side view illustrating the operation of the work assembling method following FIG. 7;

FIG. 9 is a top view for explaining the operation of the work assembling method following FIG. 8;

FIG. 10 is a side view for explaining the operation of the work assembling method following FIG. 9;

FIG. 11 is a side view for explaining the operation of the work assembling method following FIG. 10;

FIG. 12 is an exploded perspective view showing a tube sheet of the evaporator.

FIG. 13 is a top view for explaining a conventional work assembling method.

[Explanation of symbols]

 15 Conveyance Rail (Conveyance Path) 17 Work Holder 19 Tube Sheet 19b Inflow Portion 19c Outflow Portion 19A First Work 19B Second Work

Claims (2)

[Claims] 1. A work assembling method for assembling a first work (19A) and a second work (19B) having the same shape in a state where the first work (19A) and the second work (19B) are turned upside down. Second work (19
B) are held by a work holder (17) and are conveyed alternately and continuously on the same conveyance path (15). When the first work (19A) reaches a predetermined position, the first work (19A) (19A) is temporarily stopped, and the first work (1) held in the work holder (15) is stopped.
9A) is removed from the work holder (15) and retracted from the transport path (15), and the first work (19) is removed.
After reversing the front and back of A), the second work (19B)
The transfer of the second work (19B) is temporarily stopped when the second work (19B) conveyed immediately after the first work (19A) reaches a predetermined position due to the start of the transfer of the second work (19B). Then, the first work (19A) is held by the work holder (15) holding the second work (19B), and the first work (19A) is held.
And a second work (19B). 2. The work assembling method according to claim 1, wherein the first work (19A) and the second work (19B) include an inflow portion (19b) and an outflow portion (19) of a heat medium.
c) is an evaporator tube sheet (19) formed in the same direction.