JPH07315550A - Pallet carrying device - Google Patents

Abstract

PURPOSE:To save the space, reduce the cost and improve the working efficiency of a pallet carrying device, by carrying pallets respectively loaded with works having symmetric shape and different part mounting positions while being mixed, and charging parts onto on the part mounting position from a single part supply part. CONSTITUTION:A pallet 3 loaded with one-side work being mixedly carried is provided with a pallet judging dog, this is detected by a sensor 6, and when the pallet is carried in, the backup plate base 10 of a moving mechanism part 7 is moved in the carrying direction of a carrying conveyor 4 by means of a slide cylinder 23, a backup plate 15 is moved by the difference between the part mounting positions of the one side work and the other side work, so as to conform the part mounting position of the work on the pallet to the position of a part supply part. Hereby, the part can be supplied from the single part supply part to the different part mounting positions of work of a symmetric shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a symmetrical shape such as a door of an automobile, but it transfers a pallet loaded with works having different component mounting positions in a mixed manner, and a single pallet is placed at the component device position. The present invention relates to a pallet transport device that supplies components from a component supply unit.

[0002]

2. Description of the Related Art FIG. 5 shows a right pallet 2a on which a right door part 25 of an automobile is mounted, and FIG. 7 shows a left door part 26.
The left pallet 3a in which is mounted is shown. 6 and 8 are front views of FIGS. 5 and 7, respectively. As shown in FIGS. 6 and 8, the front views of both are exactly the same. However, as shown in FIGS. 5 and 7, the component mounting position 2 of the component 25 for the right door and the component 26 for the left door
7 and 28 are located at symmetrical positions, located at positions a and b from the tip side of both pallets 3a and 2a, and a> b. But,
The components mounted on the component mounting positions 27 and 28 are the same component. Further, the right pallet 2a and the left pallet 3b are provided with backup positioning holes 16a and 17a at which the positioning pins (not shown) are inserted and removed. Therefore, it is not possible to supply the components to both doors 25 and 26 by the single backup plate and the component supply unit in the fixed position. Therefore, in the prior art, a backup plate and a component supply unit for the right door component 25 are provided in a certain station in the transport path, and a backup plate and a component supply unit for the left door component 26 are provided in another station in the transport route. The right door component 25 and the left door component 26 were being assembled.

[0003]

In the prior art, the right pallet 2a shown in FIG. 5 is stopped at a predetermined position by using the stopper cushion 29, and the positioning pin of the right backup plate (not shown) is moved to the right pallet 2a. The right door component 2 by inserting it into the backup positioning holes 16a, 17a of
After stopping 5 at a predetermined position, a predetermined component is loaded from the component supply unit 30 arranged corresponding to the component mounting position. Further, as to the left door component 26 that is transferred together with the right door component 25, the left door component 26 is discriminated by the pallet discrimination dog 5a provided on the left pallet 3a as shown in FIG. By this discrimination signal, the left pallet 3a passes through the right backup plate and moves on the conveyor to the position of the left backup plate to position the left pallet 3a. Next, a predetermined same component is input from the component supply unit 31 for the left door component 26. As described above, in the conventional technique, the dedicated backup plate and the component supply units 30 and 31 are arranged on the right door component 25 and the left door component 26, respectively. Therefore, there is a problem that the line space is increased, the equipment cost is increased, and the man-hours for assembling and adjusting are increased.

The above problems will be solved if the assembling and adjusting work of the left and right door parts can be performed by the single backup plate and the single parts supply section. The present invention was devised in view of the above circumstances, and an object of the present invention is to provide a pallet transfer device capable of saving space in an assembly line, reducing equipment costs, improving work efficiency, and reducing costs. And

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention conveys a single component by feeding a pallet having symmetrical workpieces with different component mounting positions, respectively, by a conveyer. A pallet conveying device for supplying the parts to the respective parts mounting positions of the respective works, the pallet discriminating dog being fixed to a pallet on which one side of the symmetrical work is mounted, and a detecting means for the dogs. A pallet transporting device is provided which is provided with a moving mechanism section for moving the pallet on one side to the position of the component supply section arranged corresponding to the pallet on the other side by a detection signal of the detecting means. . Further, more specifically, the moving mechanism section includes a backup plate including a positioning pin that is inserted into and removed from a pallet, a backup cylinder for lifting the plate, and a backup plate substrate that supports the cylinder and the plate. When,
A sliding mechanism section that slidably supports the substrate along the transfer direction of the pallet, a slide cylinder for driving the board, and a control section that controls movement of the slide cylinder by a predetermined amount according to a detection signal of the detection means. It is characterized by having.

[0006]

When the pallet on the other side, which is not provided with the pallet discrimination dog, is transferred, the pallet is positioned by the backup plate provided at a predetermined position, and the desired component is supplied from the component supply unit. . On the other hand, when the pallet on one side provided with the pallet discrimination dog is transferred, the detecting means detects that the pallet is on the one side. First, the backup plate stopped at a predetermined position is attached to the pallet. Subsequently, the moving mechanism unit operates to move the pallet on one side and move the component mounting position of the work on the pallet to the position corresponding to the component supplying unit. As a result, the desired component is supplied from the single component supply unit to the component mounting position of the work on the pallet on one side as well as the pallet on the other side. That is, the component can be supplied to the component mounting position of the symmetrical work by the single backup plate and the component supply unit.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a front view showing a structure around a moving mechanism portion of a pallet of this embodiment, FIG. 2 is a top view of FIG. 1, FIG. 3 is a top view of a sliding mechanism portion of the embodiment, and FIG. 4 is a side view of FIG. It is a figure.

The pallet transfer device 1 includes a transfer conveyor 4 for transferring the right pallet 2 and the left pallet 3 in a mixed manner,
A pallet discriminating dog 5, which is fixed to both end portions on both sides of the pallet on one side, for example, the pallet 3 for the left side, a sensor 6 of detecting means provided on the stationary side of the apparatus for detecting the dog 5, and a moving mechanism portion. 7 and a control unit 8 and the like. The right pallet 2 and the left pallet 3 that have been mixedly transferred on the transport conveyor 4 stop by contacting their front ends with a pallet stopper 9 described later. In this state, the rear ends of both pallets 2 and 3 face the sensor 6. Further, symmetrical workpieces (not shown) are mounted on the right pallet 2 and the left pallet 3, respectively. Further, the component mounting positions of both workpieces are located a and b away from the pallet tip as shown in FIGS. 5 and 7, and the component mounting positions of both pallets are in the transfer direction of both pallets (ab).
Are only separated. That is, the pallet discriminating dog 5 is provided on the left pallet 3, and the component mounting position of the work on the left pallet 3 is (a-
It is assumed that the distance is b) backward.

Next, the moving mechanism portion 7 will be described with reference to FIGS. A backup cylinder 11 is fixed to the center of the backup plate substrate 10, and guide blocks 12 and 13 are fixed to the front and rear. Further, a vertically movable stopper cylinder 14 that supports the pallet stopper 9 is fixed. Positioning pins 1 that are inserted into and removed from the backup positioning holes (not shown) of the right pallet 2 and the left pallet 3 are provided on the upper surface of the backup plate 15.
6 and 17 are fixed. In addition, the lower surface has guide rods 18 and 1 slidably engaged with the guide blocks 12 and 13.
9 is fixed. The sliding mechanism part is fixed on the base table 20 on the immovable side of the apparatus and is arranged along the moving direction of the conveyor 4, and the slide rail 21 is engaged and fixed to the backup plate substrate 10 side. A slide guide (LM guide) 22, a slide cylinder 23 fixed on the base 20, a connecting plate 24 installed between the backup plate substrate 10 and the slide cylinder 23, and the like.

On the other hand, the control unit 8 connects the sensor 6, the slide cylinder 23, the backup cylinder 11, etc., and automatically controls the drive source of the slide cylinder 23 by inputting a detection signal so that the slide cylinder 23 operates by a predetermined amount. Composed. Specifically, it is preset to move the backup plate substrate 10 by the distance (ab) according to the input signal of the sensor 6.

Next, the operation of this embodiment will be described. In addition,
In the present embodiment, as described above, the component mounting position of the work on the left pallet 3 provided with the pallet discrimination dog 5 is ab as compared to the component mounting position of the work on the right pallet 2 without the pallet discrimination dog 5. It is behind the pallet transport direction by a distance. First, the right pallet 2 is transferred on the conveyor 4 and hits the pallet stopper 9. In this case, since there is no pallet discrimination dog 5, the sensor 6 outputs a signal indicating that there is no dog. As a result, the control unit 8 operates the backup cylinder 11, and the positioning pins 16 and 17
Is inserted into the right pallet 2 and positioned. Next, parts are supplied to a predetermined position of the work on the right pallet 2 from a single part supply unit provided at a predetermined position on the stationary side, and the right work is assembled and adjusted. Next, the left pallet 3 on which the right work and the left work are mounted is transferred onto the transport conveyor 4, and the left pallet 3 contacts the pallet stopper 9. Since the pallet discriminating dog 5 is provided on the left pallet 3, the sensor 6 sends a detection signal indicating that it is the left pallet 3 to the control unit 8 side. As a result, the control unit 8 operates the slide cylinder 23. The backup plate substrate 10 moves along the slide rails 21 in the transfer direction of the conveyor via the connecting plate 24. Since the backup plate 15, the backup cylinder 11 and the like are mounted on the backup plate substrate 10, the backup plate 15 and the like move by the same amount as the backup plate substrate 10 moves. As described above, this movement amount corresponds to (ab). When the left pallet 3 moves by (ab), the component mounting position of the left work on the left pallet 3 comes to a position corresponding to a single component supply unit. When the backup plate substrate 10 is moved, the backup cylinder 11 is also operated at the same time, and the positioning pins 16 and 17 are inserted into the left pallet 3. Therefore, when the movement of the backup plate substrate 10 is completed, the positioning of the left pallet 3, that is, the backup is also completed. As described above, the component is loaded from the component supply unit to the component mounting position of the left work. When the loading of the parts is completed, the backup plate 15 descends to enable the left pallet 3 to be conveyed. The backup plate substrate 10 or the like stops at that position, and the next pallet is returned to its original position depending on whether it is the right pallet 2 or the left pallet 3 or the next component is loaded with the current position held.
After that, by repeating the same operation, the parts are supplied to both works by the single backup plate 15 and the single part supply unit, and the assembly and adjustment are performed.

In the above description, a pair of workpieces having symmetrical shapes has been described. However, by appropriately disposing the detecting means, a single backup plate or a component supply unit can be used for a plurality of types of workpieces. Supply can be done. Further, although the LM guide or the like is used as the moving mechanism section 7, a feed screw shaft may be used,
A moving mechanism such as a link mechanism or a fast-forward mechanism may be used. It should be noted that the left pallet 3 is provided with pallet discrimination dogs 5 on both front and rear sides in the pallet transport direction. This is to ensure that the left pallet 3 can be discriminated even when the left pallet 3 is transported in the front-rear direction. This is because

[0013]

According to the present invention, the following remarkable effects are obtained. 1) Since a single backup plate and a component supply unit can supply components to symmetrical workpieces, the work station space can be saved. This reduces equipment costs. 2) Assembly and adjustment work are performed in one place, so work efficiency can be improved and labor can be saved. 3) Also, the cost can be reduced. 4) By changing the movement amount of the moving mechanism unit in accordance with the shape of the work, it is possible to further support a plurality of types of works.

[Brief description of drawings]

FIG. 1 is a front view showing a structure around a moving mechanism portion of a pallet according to an embodiment of the present invention.

FIG. 2 is a top view of FIG.

FIG. 3 is a top view of a sliding mechanism portion of the present embodiment.

FIG. 4 is a side view of FIG.

FIG. 5 is a top view of a pallet on which a conventional right door component is mounted.

6 is a front view of FIG.

FIG. 7 is a top view of a pallet on which a conventional left door component is mounted.

FIG. 8 is a front view of FIG.

[Explanation of symbols]

 1 Pallet Conveyor 2 Right Pallet 3 Left Pallet 4 Conveyor 5 Pallet Discrimination Dog 6 Sensor 7 Moving Mechanism 8 Control 9 Pallet Stopper 10 Backup Plate Board 11 Backup Cylinder 15 Backup Plate 16 Positioning Pin 17 Positioning Pin 23 Slide Cylinder 25 Right Door Parts 26 Left Door Parts

Claims (2)

[Claims] 1. A pallet in which pallets, each having a symmetrical shape and having different component mounting positions mounted thereon, are mixed and transferred by a conveyor, and the components are supplied from a single component supply unit to the component mounting positions of the respective works. The carrier device is a pallet discriminating dog fixed to a pallet on which one side of the symmetrical work is mounted, a detecting means of the dog, and a pallet on the other side of the pallet on the other side by a detection signal of the detecting means. A pallet transporting device comprising a moving mechanism section that moves to a position of the component supply section arranged corresponding to a pallet. 2. A backup plate, wherein the moving mechanism section includes a positioning pin that is inserted into and removed from a pallet, a backup cylinder for raising and lowering the plate, and a backup plate substrate that supports the cylinder and the plate. A sliding mechanism section that slidably supports the substrate along the transfer direction of the pallet, a slide cylinder for driving the board, and a control section that controls movement of the slide cylinder by a predetermined amount according to a detection signal of the detection means. The pallet conveyor according to claim 1, which has.