JPH0344486Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is equipped with a device that positions and fixes the trolley at a predetermined position in order to transfer the mold transported by the trolley to a predetermined position. This invention relates to a mold conveyance device.

(Prior art) For example, when transporting a large and heavy mold to form a urethane bumper or the like to a press machine for setup change, the mold is placed on a cart that can be moved freely on a rail laid close to the press machine. The mold is loaded and transported, the trolley is stopped at the press machine for positioning, the trolley is then fixed, and the mold is transferred.

Conventionally, devices shown in FIGS. 6 and 7 have been used for positioning and fixing the cart at this time.
In this device, a cart 2 carrying a mold W and moving on a rail 1 is stopped in front of a loading/unloading exit of a press (not shown). Then, the set pin insertion hole 3 provided in the truck 2 and the positioning hole 5 provided in the floor 4 are aligned. When the positions are aligned, insert the L-shaped set pin 6.
In this way, the center of the press (not shown) and the center of the truck are aligned and fixed on the rail.

The mold W is automatically carried into the press machine from the carriage 2 via an auxiliary roller stand 8 by rollers 7, 7, . . . provided on the upper surface of the carriage 2, which is rotated by a motor (not shown) or the like.

(Problem that the invention aims to solve) However, when using conventional equipment, the mold for forming urethane bumpers etc. is heavy at 5 to 10 tons, so the inertia of the trolley 2 is large and it is difficult to stop it at an accurate position. I can't. Therefore, the positions of the set pin insertion hole 3 and the positioning hole 5 cannot be determined easily, and the cart must be moved and moved delicately to achieve alignment, which requires a great deal of time and effort. A problem had arisen.

Furthermore, since there is a clearance between the positioning hole 5 and the set pin 6 when inserting the mold, there is a problem that the position cannot be determined accurately, leading to damage to the mold and equipment when the mold is transferred.

The present invention was devised in view of the above problems, and an object of the present invention is to enable reliable and easy positioning and fixing of a trolley.

(Means for Solving the Problems) As a means for solving the above-mentioned problems, the present invention arranges an auxiliary roller stand along the traveling direction of the trolley that conveys the mold, and A pair of stopper surfaces are provided on either one of them facing forward and backward in the traveling direction, and
The other side is provided with a pair of clamp arms that press the stopper surface in opposite directions.

(effect) The above configuration works as follows.

When the trolley carrying the mold moves and reaches the auxiliary roller stand, the trolley is stopped. While the truck is moving, the clamp arm provided on the other is moved to a position where it does not come into contact with a pair of stopper surfaces provided on either the truck or the auxiliary roller stand. When the truck is stopped, the pair of ramp arms are moved to press the stoppers forward and backward in the direction of travel of the truck. In this way, by pressing the pair of stopper surfaces in opposite directions with the pair of clamp arms, the carriage is aligned and fixed with the auxiliary roller stand.

(Example) Next, an example of the present invention will be described based on FIGS. 1 to 5.

FIG. 5 shows a plan view of the entire conveying device having a device for positioning and fixing a trolley according to the present invention, which will first be described. A rail 10 is laid on the loading/unloading exit side of the presses 9, 9, . . . provided at predetermined positions. This rail 10 has a bogie 1
1, 11... are movably engaged. Then, the mold W is placed on a truck 11 by a lift 12 and transported to the front of the press machine 9, and then from the truck 11 to the press machine 9 via an auxiliary roller stand 13 attached to the press machine 9. It will be transferred.

Next, details of each device will be explained with reference to FIGS. 1 and 2. Rotatable rollers 14, 14, . . . are attached to the upper surface of the truck 11, and these rollers 14, 14, . Furthermore, wheels 16, 16, . . . driven by a motor (not shown) are provided on the lower surface, and these wheels 16, 16, . This trolley 1
On the side of 1, there is a stopper 1 which is the main part of this invention.
A pair of numbers 8 and 18 are attached. The stoppers 18, 18 are provided with a clamp arm 19, which will be described later.
The stopper surfaces 18a, 18a pressed by the stopper 19 are provided in opposite directions to each other in the conveying direction of the truck.

Next, the auxiliary roller stand 13 attached to the press machine 9 will be explained. This auxiliary roller stand 13 is placed on a floor 17, and rollers 21 and 2 rotated by a motor 20 are mounted on the upper surface.
1... is provided. Clamp arms 19, 19 which are rotatable by arm support pins 22, 22 are attached to both sides of the auxiliary roller stand 13, respectively.
One end of the piston rod 19 is attached to the piston rod 24, 24 of the cylinder device 23, 23 via a tip fitting 25, 25. In addition, the other end side is a plate 26 that comes into contact with the aforementioned stopper surfaces 18a, 18a.
26 is fixed. Then, just when the piston rods 24, 24 are extended, the plate 2
6 and 26 press against the stopper surfaces 18a and 18a.

The cylinder bodies 27, 27 of the cylinder devices 23, 23 are rotatably attached to the side surface of the auxiliary roller stand 13 by pins 28, 28.

Further, a phototube type proximity sensor 29 is provided on the cart side of the auxiliary roller stand 13, and this proximity sensor 29 detects whether the cart 11 is approximately at the stop position.

Next, the operation related to the above configuration will be explained.

The trolley 11 carrying the mold W automatically moves to the rail 10.
It moves above and is stopped at the position of the press machine 9. At that time, the piston rods 24, 24 of the cylinder devices 23, 23 are shortened, and the clamp arm 1
9 and 19 are in positions where they do not come into contact with the stoppers 18 and 18. (Refer to Fig. 3) The stopped cart 11 is detected by the proximity sensor 29 to see if it is almost at a predetermined stop position, and when it is confirmed that it is, oil is supplied to the cylinder devices 23, 23, and the piston rods 24, 23 are stopped. 24 expands. When the piston rods 24, 24 extend, the clamp arms 19, 19 rotate toward the stoppers 18, 18, and the plates 26, 26 attached to the clamp arms 19, 19 move toward the stopper surfaces 18.
a, 18a, and if the carriage 11 is slightly deviated from the predetermined position, the stopper 18 is pressed during rotation to move the carriage 11 to the correct position. In this way, the stopper surface 18
Clamp arms 19, 19 connect a, 18a to trolley 1
The trolley 11 is fixed by pressing from the front and rear in the traveling direction of the trolley 11. (See FIG. 4) Subsequently, the motor 15 and the motor 20 are operated to rotate the rollers 14, 14, . . . , the rollers 21, 21, .

Once the mold W has been carried in, the piston rods 24, 24 of the cylinder devices 23, 23 are shortened, and the clamp arms 19, 19 are moved to the stoppers 18, 24.
The carriage 11 is unlocked by rotating it in a direction away from the carriage 18.

The mold W is carried into the press machine 9 as described above.

In this embodiment, a pair of stoppers with stopper surfaces 18a, 18a facing outward are provided on the side surface of the cart 11, and clamp arms 19, 19 rotate and press the stopper surfaces 18a, 18a from the outside. However, in another embodiment, the stopper surfaces of the pair of stoppers face inward, and the clamp arms are rotated from the inside (opposite to the direction of rotation of each clamp arm in this embodiment). Alternatively, the stopper surface may be pressed by rotating the stopper surface.

Alternatively, the stopper may be made into a single stopper, with stopper surfaces formed on both front and rear surfaces thereof, and a pair of clamp arms may clamp the stopper.

(Effects of the invention) The positioning and fixing of the cart is done by pressing a pair of stopper surfaces provided on either the cart or the auxiliary roller stand with a pair of clamp arms provided on the other, which takes a long time for positioning. The width can be shortened and mold setup time can be shortened, leading to improved productivity. Furthermore, since positioning can be performed easily and reliably, damage to molds and equipment will not occur, and maintenance costs can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of the present invention;
Fig. 2 is a right side view of Fig. 1, Fig. 3 is an enlarged plan view showing the state before operation of the clamp arm, which is the main part of the present invention, and Fig. 4 is the clamp arm shown in Fig. 3. FIG. 5 is an enlarged plan view showing the state after operation; FIG. 5 is an overall plan view of the conveying device according to the present invention; FIG. 6 is a plan view showing the conventional device; FIG. It is a front view showing a partial cross section. 11...Dolly, 13...Auxiliary roller stand, 18a
...stopper surface, 19...clamp arm.

Claims (1)

[Scope of utility model registration request] An auxiliary roller stand is arranged along the traveling direction of the trolley that conveys the mold, and a pair of stopper surfaces are provided on either the trolley or the auxiliary roller stand facing forward and backward in the traveling direction, and the other is provided with a pair of stopper surfaces facing forward and backward in the traveling direction. A mold conveyance device comprising a pair of clamp arms that press the stopper surface in opposite directions.