JPH028891Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a conveying pallet for conveying a long object having a frame body, such as a heat collector for a solar water heater, and is used in a free-flow paint drying line, etc. used.

(Prior Art and Problems) Conventionally, a painting line consists of a series of lines in which the painted object is sequentially conveyed to a painting booth and a drying oven while suspended from a trolley conveyor suspended from the ceiling.

By the way, this type of painting line has a setting process after taking out the painting booth.
In the case of powder coating, the above-mentioned setting process is not necessary, so in order to efficiently mass-produce the coating, it is necessary to transfer the coated articles leaving the coating booth to a separately installed drying line. Since the work is extremely simple, a robot is used to transfer the painted items to the drying line.

There is also a coating method in which a series of coating and drying operations is performed using a material handling robot dedicated to transportation.

However, when, for example, the heat collector A shown in FIG. 1 is to be locked to the tip arm of a robot or the like, it is easy to configure the locking means using a hydraulic or pneumatic cylinder. On the other hand, since the pallets transported on the drying line pass through a hot air circulation furnace at about 200°C, a transport pallet is required that is equipped with particularly durable locking means and that can be run stably.

(Means for Solving the Problems) In view of the above, the present invention is capable of extremely stably holding a long object having a frame such as a heat collector, instead of a locking means using a cylinder or the like. The purpose of the present invention is to provide a conveying pallet used in a paint drying line that constitutes a free flow line.

The present invention is a conveying pallet for conveying solar hot water heat collectors and other objects to be coated, which are equipped with hollow tube frames on both sides, through a coating drying line.
A pair of arm members extend rearward from the rear end of the pallet main body, and the tips of the arm members are raised upward to form a rising part, and a horizontal part is attached to the front part of both the rising parts. The support fork is fixed with a slightly upward slope, and the support fork can be inserted into a hollow tube frame provided on both sides of the object to be coated, so that the center of the object to be coated supported by the support fork is , is characterized by being located almost above the center of the pallet body.

(Example) Hereinafter, the configuration of the present invention will be described with reference to the drawings.

FIG. 1 shows a solar water heater heat collector A, which is an example of a long object conveyed by a pallet according to the present invention, and the heat collector A has a hollow frame made of hot-dip galvanized steel plate. 2 on both sides, the frame body 2,
A copper pipe 3 is bent in a meandering manner between the two, and a long and thin aluminum piece 4 is fitted into the copper pipe 3 at a predetermined interval and fixed to both frames 2.

The pallet 7 has a pair of arm members 13 extending rearward at the rear end of a pallet main body 12 made of aluminum casting, and a reinforcing cross member 14 is provided approximately at the center of the arm members 13, 13. It is provided across the arm members 13. The tip ends of both arm members 13, 13 rise vertically upward, and a rising portion 15 is formed. The two rising portions 15, 15 are connected by a connecting plate 16. Moreover, two supporting forks 17, which are inserted into the painted object, are installed at appropriate intervals on both sides of the two upright portions 15, 15, respectively, so as to be inclined slightly upward from the horizontal. That is, the support fork 17 is inclined by about 3 degrees from the horizontal. The support fork 17 is a protrusion whose tip has a slightly narrow diameter, and is made of a material such as iron or stainless steel that has good heat resistance and can sufficiently withstand the weight of the object to be coated. On the other hand, steel rails 18 are laid along the lateral direction on the front and rear back surfaces of the pallet main body 12, and the pallet 7 is placed on the rollers 19 of the conveyor 6 via the rails 18. In addition, the pallet body 12 has four openings 32 for guiding hot air sent from below to the object to be coated, and a cross-shaped frame is formed across the center of the pallet body 12.
Positioning holes 23 are bored at appropriate locations in the frame. Furthermore, a notch 20 for position detection is formed approximately at the center of both sides of the pallet body 12. That is, when a position detection sensor (not shown) provided on the conveyor 6 is fitted into the notch 20, the pallet 7 is removed from the conveyor 6 and left free.
In other words, below the conveyor 6 is an air cylinder 10.
Moreover, a positioning plate 11 is fixed to the upper end of the piston rod 21 of the air cylinder 10 via a support 21, and the positioning plate 11 is provided with a truncated conical projection 22, so that the notch When the position detection sensor is installed in the position detection sensor 20, the output of the position detection sensor controls the air cylinder 10. Therefore, the piston rod 21 is raised, the protrusion 22 is fitted into the positioning hole 23 of the pallet 7, and the pallet 7 is separated from the conveyor 6 and lifted.
The notch 20 may be formed only on one side of the pallet 7, or a limit switch or the like may be provided on the conveyor 6 to detect the position of the pallet.

(Effects of the invention) In the present invention, a pair of arm members are provided at the rear end of the pallet body, and the tips of the two arm members rise vertically upward to form a rising portion. are connected by a connecting plate, and a supporting fork is provided on the rising part, tilting slightly upward from horizontal. By simply inserting the support fork into the frame, the objects can be stably held on the pallet. In addition, since it does not have a locking means such as a cylinder, it is extremely durable even when transported inside a high-temperature furnace.Moreover, the simple structure allows for low manufacturing costs, and the equipment on the painting line can be made smaller. Can be automated.

Furthermore, the present invention is a conveying pallet for transporting objects to be coated, which are provided with frame bodies of hollow tubes on both sides, in a coating line, and in which the support forks are provided with frame bodies of hollow tubes provided on both sides of the objects to be coated. Since it can be inserted into the frame, it can be transported through the coating line without covering the surface of the object to be coated at all.

Furthermore, arm members extend rearward from the rear end of the pallet main body, and the tips of the arm members are raised upward to form a rising portion, and support is provided forward on this rising portion. Since the fork is fixed and the center of the workpiece supported by the support fork is located above the center of the pallet body, the overall height of the pallet can be reduced and it can be easily moved through the coating drying line. The weight of the object to be coated is placed on the center of the pallet body, and the pallet body can be stably moved on the coating line.

Further, since the support forks are installed with an inclination slightly upward from the horizontal, after the object to be coated is delivered to the pallet via the robot, the object to be coated does not follow the retreat of the tip arm of the robot.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the conveying pallet of the present invention, FIG. 1 is an external view of a heat collector showing an example of conveyed objects, FIG. 2 is a perspective view showing the overall structure of the conveying pallet, and FIG. 3 is the same. Plan view, Figure 4 is - of Figure 3.
FIG. 7... Palette, 12... Palette body, 13
...Arm material, 16...Connection plate, 17...Support fork.

Claims (1)

[Scope of Claim for Utility Model Registration] A conveyor pallet for conveying objects to be coated, such as a heat collector for solar hot water supply and other articles having hollow tube frames on both sides, in a coating drying line, the rear end of the pallet body. A pair of arm members extends rearward from the upper part, and the tips of the two arm members are raised upward to form a rising part, and both the rising parts are inclined slightly upward from horizontal toward the front. The support fork is fixed in place, and the support fork can be inserted into the frame provided on both sides of the object to be coated, and the center of the object to be coated supported by the support fork is located approximately above the center of the pallet body. A pallet for transporting objects to be coated.