JPH0650120Y2 - 3D carrier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a three-dimensional transfer device in which a processing line is advanced in the height direction.

(Prior art) Conventionally, a linear motor was installed on the rail side, and a self-propelled trolley in which a traveling trolley was provided with a secondary conductor was made to travel between multiple machining stations, and the workpiece mounted on the trolley was machined. The processing line to give is known. Japanese Utility Model Application No. 62-134252 discloses a processing line in which rails are installed in the vertical and horizontal directions on the floor and a plurality of stations are arranged at appropriate positions.

(Problems to be solved by the invention) As described above, a processing line in which rails are laid vertically and horizontally on the floor requires a large area. Therefore, it has been considered to arrange a plurality of stations in the height direction to reduce the floor area. For example, two pairs of rails are divided into an upper stage and a lower stage, and a lifter is provided to transfer the carriage from the upper rail to the lower rail, or vice versa. It has been considered to arrange a plurality of stations on each rail.

However, if you try to raise and lower the bogie vertically to operate the lifter efficiently, it will be difficult to install due to the relationship with the upper traveling rail, and if you try to raise and lower the traveling rail together, the shape of the lifter will be large and both Became complicated and it was very difficult to make it into a three-dimensional structure.

The present invention provides a three-dimensional transport device using a simple lifter.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention provides a pair of traveling rails, which are wider than the width of a trolley and on which wheels protruding from the side are mounted, arranged in parallel in an upper stage and a lower stage. Adjacent to the upper and lower traveling rails, there is provided an elevating device having a pair of arms for sandwiching the carriage arranged on the traveling rails, and the elevating device at the location where the upper traveling rail and the pair of arms intersect. The upper traveling rail is divided to form a gap through which the pair of arms can pass, and a pair of auxiliary rails connecting the divided portions are provided slidably along the upper traveling rail, The wheel is arranged at a position corresponding to the position of the auxiliary rail.

(Operation) Since the present invention is configured as described above, a gap is formed in a portion where the upper traveling rail is divided, and the auxiliary rail is passed over here.

To move the trolley on the lower travel rail to the upper tier, hold the trolley on the lower travel rail with a pair of arms to raise it, and then move the auxiliary rail backward along the travel rail (open a gap). Direction), the carriage and the pair of arms can be positioned above through the gap between the upper traveling rails. Next, when the auxiliary rail is moved forward to connect the divided portions and the carriage is separated from the pair of arms, the carriage rides on the auxiliary rail and can travel on the upper traveling rail.

Further, in order to move the truck on the upper traveling rail to the lower stage, the truck is clamped by the pair of arms and then the auxiliary rail is retracted, so that a gap is formed between the pair of arms and the truck. Then, the trolley can be lowered by the lifting device and placed on the lower traveling rail. Even if the pair of arms are not removed from the traveling rail, the traveling of the trolley is not hindered by retracting it above the trolley.

(Embodiment) Next, an embodiment of the present invention will be described with reference to FIGS.

The three-dimensional processing line 1 has rails arranged vertically as shown in FIG. 4. A pair of rails 2 are laid on the support member 3 in the lower stage, and a pair of rails is divided in a plurality of places in the upper stage. 4 is fixed to the support member 5, a pair of divided rails 4a is fixed to the installation base 5a, and the support member 5 and the installation base 5a are supported by the columns 6 and 16 standing from the side surface of the support member 3. The rails 4 and 4a are supported at a predetermined height. Reference numerals 7, 8 and 10 are carts. As shown in FIG. 3, the pair of rails 2, 4, 4a has one rail whose cross-section is mountain-shaped and the other rail is flat, and the wheel is a wheel 11 which engages with the mountain-shaped rail. , 11a and a wheel 11b having a width twice that of the rail are attached to the respective ends, and the width of the truck is made sufficiently smaller than the width of the rail. Further, a secondary conductor (see the secondary conductor 7a at the bottom of the carriage 7 shown in FIG. 3) is provided at the bottom of each carriage. In addition, the linear motor units 12, 12 'are installed on the support members 5 above the columns 6, 6'shown in FIG.
It is arranged facing C and D. Linear motor unit 1
Linear motors 13, 13 'to which 2, 12' are attached are provided so as to move to the station position, and
A fixed linear motor 14 is attached to the support member 3 at an appropriate position.

The carriages 7 and 8 are equipped with the same jig (not shown), and the carriages 9 and 10 are equipped with other same jigs (not shown). That is, this three-dimensional processing line 1 processes two types of workpieces.

Next, an elevating device 15 for transferring the carriage to the upper or lower rail will be described with reference to FIG.

Posts 1 erected at the positions of stations A and B (Fig. 4)
Rails 17 and 17 are arranged at both ends of the base 6, and bases 19 and 19 are horizontally connected from the back of the pillar 16 by a connecting member 18.
Are provided on rails 17, 17 so that they can be moved up and down. Base 19,
A pair of arms 20, 20 are pivotally mounted on the shaft 19, and are provided so that they can be held by a cylinder 21 mounted on the base 19 so that they can rotate in the directions toward and away from each other. Also,
A bracket 22 is fixed to the upper part of the column 16, and the bracket 22 has sprockets on both ends as shown in FIG.
A rotary shaft 24 having 23, 23 is rotatably attached. As shown in FIG.
A rotary shaft 26 having 25, 25 is rotatably provided and is connected to a shaft of a geared motor 27 installed at a lower portion. Then, the chain 28 is laid across the sprockets 23 and 25, and both ends of the chain 28 are fixed to the base 19. Therefore,
The base 19 moves up and down following the forward and reverse rotations of the geared motor 27.

Next, the auxiliary rail unit 29 of each station located on the upper stage will be described with reference to FIG.

For example, the section R between the both ends 4b of the divided rail 4a and the opposite rail end 4c in the station C has a width through which the arm 20 of the lifting device 15 and the wheels 11, 11a, 11b pass. The guide board 30 is horizontally mounted inside the side surface of the installation table 5a in the station C, and bearings 31, 31 are provided on the upper surfaces of both ends thereof. Each bearing 31
Each of the two sliding members 32, 32 'is located on the upper surface of and is slidably provided via a guide rail 33 fixed to the lower surfaces of the sliding members 32, 32'. An auxiliary rail 4d is provided on the upper surfaces of the front parts of the sliding members 32, 32 ', and a positioning pin 34 is provided at the tip. At the rear end portions of the sliding members 32, 32 ', a connecting member 36 having a pair of rollers 35, 35 holding a guide substrate 30 rotatably attached is attached. Therefore, the sliding members 32, 32 'are composed of the bearing 31 and the pair of rollers 3
It is held by 5,35 and slides. Stoppers 37, 37 'attached to the installation table 5a in the station C are located at the retreating ends of the sliding members 32, 32', and are attached to the opposing supporting members 5 in the divided section at the forward ends. Positioning holes 38a, 38'a
Stoppers 38, 38 'are arranged.

The connecting members 36, 36 attached to the two sliding members 32, 32 'are connected to the main body of the cylinder 41 and the knuckle 43 mounted on the tip of the piston rod 42 via brackets 39, 40, respectively. . Therefore, the two sliding members 32, 32 'slide in opposite directions by the operation of the cylinder.

In this embodiment, station A is the manual loading position and station B is the automatic loading position. A welding robot is installed in the station C to perform welding work. Station D is a carry-out position, and a carry-out device is provided. Stations E and F are standby positions.

Next, the operation will be described.

At the station A, the workpiece is placed on the dolly 7 and is moved to the station B by the linear motor 14. At the station B, another workpiece is automatically placed.

Simultaneously with the mounting, the cylinder 21 of the lifting device 15 operates to rotate the arm 20 in front of the rail 2 and clamp the carriage 7 from both sides. Then, the geared motor 27 is rotated to move the chain 28 and raise the base 19. The arm 20 of the base 19 and the wheels 11, 11a, 11b of the carriage 7 have a gap R between the rails 4.
The trolley body passes through between the pair of traveling rails. The base 19 stops at the rising end.

Next, when the cylinder 41 of the auxiliary rail unit 29 in the station C operates, the piston rod 42 extends and the sliding member
32 'moves forward. Then, the tip of the sliding member 32 'comes into contact with the stopper 38' and the positioning pin 34 is fitted into the positioning hole 38'a, whereby the auxiliary rail 4d is positioned and fixed in the gap R. Even if the sliding member 32 'comes into contact with the stopper 38', the piston rod 42 further extends, so that the cylinder 41 moves in the opposite direction due to the back pressure. As a result, the sliding member 32 advances and contacts the stopper 38. Then, the auxiliary rail 4d is positioned and fixed in the gap R by fitting the positioning pin 34 into the positioning hole 38a. With the above, the auxiliary rail 4d is mounted in the gap R before and after the station C.

Then, when the arms 20 of the lifting device 15 are rotated in directions away from each other and the carriage 7 is separated, the carriage 7 is placed on the auxiliary rail 4d by the wheels 11a and 11b. The lifting device 15 is an arm
20 is extended in the horizontal direction, descends, and stops at the original position.

On the other hand, at the station D, the carriage 8 stopped at the station D on the upper rail 4 is moved to the station D.
It is held by the arm 20 of the lifting device 15 provided in the.

Next, when the cylinder 41 of the auxiliary rail unit 29 is operated in the station D, the piston rod 42 contracts so that the sliding members 32, 32 'are drawn to the station D side and contact the stoppers 37, 37', so that the station 37 A gap R is formed before and after D. Then, the geared motor 27 is operated to operate the base 19
To lower. When the base 19 passes through the gap R during the descent, the auxiliary rail 4d extends and closes the gap R. When the carriage 8 is placed on the rail 2 at the lower end of the base 19 and the arm 20 is rotated, the base 19
Rises again and the rising end stops.

In the welding station C, the welding robot performs a predetermined work. After work, linear motor unit 12
Is activated, the linear motor 13 of the linear motor unit 12 is moved below the carriage 7 stopped at the welding station C, and the linear motor 13 is activated to move the carriage 7 to the station D.

When trolley 7 approaches station D, station D
The linear motor 13 'is also on standby at this time, and a reverse thrust is applied by the linear motor 13' to decelerate the carriage 7. The carriage whose speed has decreased becomes contact with the stopper of the station D and is stopped and positioned at a predetermined position.

When the carriage 7 is fixed, the workpiece is removed from the carriage 7 by a carry-out device (not shown), the carriage 7 is moved to the station A by the same procedure as that of the carriage 8 described above, and one cycle is completed. The dolly 8 that has been moved to the station A is operated in the same manner as the dolly 7.

In the welding station C, after the carriage 7 has traveled, the linear motor unit 12 is operated to return the linear motor 13 to the original position and the cylinder 41 of the auxiliary rail unit 29 is operated to retract the auxiliary rail 4d. The same operation can be appropriately performed in the station D. On the contrary, if the auxiliary rail 4d is moved forward, the cart can be run at any time.

As described above, the lifting device 15 works and the arm 20 moves to the rail 4
The auxiliary rail 4d can be made to stand by in the station C when it crosses the vehicle, and when the truck is positioned on the station, the cylinder 41 works to slide the sliding member so that the auxiliary rail 4d can be installed at the position of the gap R. , The dolly can be stopped and run. Further, even when the bogie is being raised or lowered, the auxiliary rail can be extended to run the bogie to stop the station, or the bogie can be moved and exchanged. Since only one drive source is used to move the two auxiliary rails in opposite directions, it can be easily installed even if the mounting area is small, and the lifting device 15 moves the pair of arms 20 up and down. Since it is only necessary to grasp the dolly 7, a simple structure can be obtained, and the manufacturing cost can be reduced.

(Effect of the Invention) Since the present invention is configured as described above, the auxiliary rails of the pair of arms of the elevating device can be retracted so that the upper and lower traveling rails can be elevated and lowered. Is located in the gap, the truck can move on the upper traveling rail. Therefore, a three-dimensional processing line can be installed in a place with a small site area by using a simple lifting device and using the lifting position of the carriage as a station.

[Brief description of drawings]

FIG. 1 is a front view of an auxiliary rail unit according to an embodiment of the present invention, FIG. 2 is a front view of the auxiliary rail unit when it is extended, FIG. 3 is a side view of the auxiliary rail unit, and FIG. FIG. 5 is a front view of a three-dimensional processing line using the auxiliary rail unit, and FIG. 5 is a plan view of the lifting device. 4 …… Traveling rail 4a …… Separated traveling rail 4d …… Auxiliary rail 5 …… Supporting member 5a …… Installation stand 7,8 …… Car 15 …… Elevator 20 …… A pair of arms R …… Separated Point

Continuation of the front page (56) Reference JP-A-57-61448 (JP, A) JP-A-59-114206 (JP, A) JP-A-55-35744 (JP, A) Actual development 57-37974 (JP , U) JP-B 51-38469 (JP, B2) JP-B 57-33143 (JP, B2) JP-B 61-22885 (JP, Y2)

Claims (1)

[Scope of utility model registration request] 1. A pair of traveling rails, which are wider than the width of a trolley and on which wheels protruding from the side surfaces are mounted, are arranged in parallel in an upper stage and a lower stage, and adjacent to the traveling rails in the upper stage and the lower stage. An elevating device having a pair of arms for sandwiching the trolley arranged therein is provided, and the pair of arms can pass by dividing the upper stage traveling rail at a position where the upper stage traveling rail intersects with the pair of arms. A pair of auxiliary rails that form a gap and connect the divided points are slidably provided along the upper traveling rail, and the wheels of the carriage are arranged at positions corresponding to the positions of the auxiliary rails. 3D transport device characterized by.