JPS58152710A - Pallet conveyer - Google Patents

Abstract

PURPOSE:To form a pallet conveyer having a desired overall length of conveyance in accordance with a scale of a work spot by a pair of left and right conveying path surfaces contacted and engaged to a bottom face of a seating plate and a conveying path surface contacted and engaged to a bottom face of a column-shaped barrel part. CONSTITUTION:The first conveying unit 18 is equipped with a supporting bed 19 and conveying path surface 22, and guide surfaces 20, 21 consisting of two vertical walls are formed to left and right in the conveying direction to the bed 19, while the surface 22 of endless belt shape is formed between these two surfaces 20, 21. The second conveying unit 30 is equipped with a supporting bed 33 and a pair of conveying path surfaces 31, 32 provided in both left and right sides of the bed 33, and guide surfaces 33a, 33b are formed respectively to left and right side walls of the bed 33. A pallet 10 for use is formed by equipping a column-shaped barrel part in which a work mounting surface is extensibly formed downward to the upper surface part.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pallet transport device Kll that holds workpieces and finished products and transports nine pallets between machine tools or industrial robot devices.

In recent years, many automatic machine tools and industrial robots have been activated at 9-manufacturing sites, which have become automated and labor-saving, resulting in automatic processing from material workpieces to designed shapes with high processing efficiency. In such automated work sites, material workpieces and finished workpieces are transported by attaching them to pallets and using an appropriate transport device to transport them between desired positions of machine tools and industrial robots. Therefore, the length was determined according to the design and design of the work site, and conveyor belt conveyor-like conveying devices were prepared individually according to the determined length. In this way, the method of preparing individual conveyance devices according to the size of the work site inevitably leads to an increase in the unit cost of the conveyance devices. Therefore, it is desired to achieve a reduction in the unit cost of such a pallet conveying device, thereby reducing the equipment cost of an automated and labor-saving machine shop, and by extension, to achieve a reduction in the unit cost of processed finished products.

Therefore, one object of the present invention is to focus on the fact that the pallets have a predetermined shape when transporting the pallets, and by connecting them into units in advance, the overall length can be adjusted to an appropriate overall length according to the scale of the work site. It is an object of the present invention to provide a pallet conveyance device capable of forming a pallet conveyance path having a pallet conveyance path.

That is, according to the present invention, in a pallet conveying device that conveys a pallet consisting of a pedestal plate for mounting a workpiece and a columnar body provided on the lower surface thereof, the pallet is moved by contacting and engaging with the lower surface of the pedestal plate. a first conveyance unit having a pair of left and right conveyance road surfaces for traveling; and a second conveyance unit having a single conveyance road surface that contacts and engages with the lower bottom surface of the columnar body to feed and travel the pallet. A pallet conveying device is provided in which these are alternately coupled in the pallet conveying direction.

The present invention will be described in detail below with reference to the accompanying drawings. Fig. 1 is a perspective view showing the overall shape of a pallet conveyed by a pallet conveying device according to the present invention. It is formed by comprising a rectangular or rectangular base plate 12 having a mounting surface 11 and a round columnar body 14 extending downward from the lower surface 13 of the base plate 12. The columnar body part 14 has a cylindrical shape. The pants) 10Fi are usually made of a lightweight resin material, and the torso 14 is also formed relatively low in order to stably transport the workpiece mounted on the pedestal plate 12. Now, the present invention has a pallet 100 having such a shape, the lower surface 13 of the pedestal plate 12, and the columnar body 1.
A conveying device is provided that conveys the pallet 10 by using the lower bottom surface 15 of the pallet 4. In other words, the pallet conveyance device according to the present invention is basically based on the second conveyance unit.
The main feature is to form a conveying device of a desired length by joining these I4 components alternately in the conveying direction of the pallet, and these two types of conveying units will be explained below.

FIG. 2 and FIG. 3 are a top view and a side view showing the first conveyance unit in the pallet conveyance device according to the present invention. In Figures 2 and 3, the first transport unit)
18F;j Equipped with one support stand 19 and a conveyance path surface 22, and the support stand 19 has a guide surface 20.2 consisting of two vertical walls.
1 are formed on the left and right sides of the conveyance direction (direction of arrow P), and an endless belt-shaped conveyance path surface 22 is formed between these two guide surfaces 20 and 21 so as to move in the conveyance direction. . The conveyance road surface 22ti having an endless belt shape may be formed by, for example, a well-known slat conveyor belt or a flat belt, and ff1l2
2a When the K pallet IO is atted, it comes into contact with the lower bottom surface 15 of the columnar body 14 of the pallet 10, and connects the pallet 0 to the conveying direction or traveling direction of the conveying path surface 22. At this time, the left and right guide surfaces 20.2 of the support stand 19
1 is pants being conveyed as shown in Figure 3) 10
The transport path surface 22 has an endless belt shape to prevent S swing of the skeleton pallet 10 and guide it in a predetermined transport direction by contacting the surface of the columnar body 14 without friction. Therefore, if the motor 23 with a speed reducer attached to the support stand 19 is rotated to the driven workpiece 25, 26 via the intermediate pulley 24 by a driving force transmission device consisting of a belt pulley mechanism, the workpiece can run on the conveying path surface 22 in the desired conveying direction. can be done. In addition, when the conveyance path surface 22 is constituted by a slat conveyor belt, the upper surface 22a of each slat may be formed as a conveyance path surface coated with Rulon resin or Teflon plum fat.

FIG. 4 and FIG. 5 are a top view and a side view showing the second conveyance unit in the pallet conveyance device according to the present invention. 4 and 5, the second conveyance unit 30 includes one support stand 33 and a pair of conveyance path surfaces 31 and 32 provided on both left and right sides of this support stand 33. 33 left/right @ wall is fidget guide surface 33 a e
33b.

Each of the conveyor paths 31, 32 is formed by a slatted conveyor belt or a flat belt belt having an endless belt shape, similar to the conveyor path 22 in the first conveyor unit 18 described above. 3
1a and 32a contact and engage with the lower surface 13 of the base plate 12 of the pallet 10 to transport the pallet 10.

In addition, the drive of both conveyance paths 31 and 32 is carried out by a motor 34 with a nine-speed reducer attached to the support stand 33, and a driven gear 1736.37 is driven by a normal belt-boo type driving force transmission device via an intermediate boolean 935. The smoothness is exactly the same as the conveyance path surface 22 in the first conveyance unit 18 described above.
In addition, another pair of driven pulleys can be mounted on the shaft 38.39 common to the t'i driven pulleys 36 and 37 on the left and right conveyance paths 31.32. Both transport surfaces 31, 32 can be driven together.

In addition, the conveyance upper surfaces 31a and 32a of both conveyance path surfaces 31 and 32
It is preferable that the Rulon resin-coated nut be coated with Teflon resin, as is the case with the above-mentioned conveying upper surface 22a. ) 10 can be smoothly transferred in the desired conveyance direction.

Now, the present invention is directed to the first and second transport units (18) described above.
．． 30 are alternately connected to form a pallet conveying device of a desired length. If the interval width T between both conveyance path surfaces 31 and 32 in the unit 30 is formed to be slightly small, the front and rear protruding ends of the first conveyance unit 18 can be connected to the second conveyance unit 30. The pallet conveying functions of both units 18.30 can be combined by simply inserting them into the front and rear recesses and arranging both units 18.30 in front and behind each other. That is, for example, the pallet (10) is conveyed by the conveyance path surface 22 in the first conveyance unit (18) with the lower bottom surface 15 of its columnar body 14 contacting and engaging, and when it reaches the joining part of both units) (18 and 30),
Immediately before leaving the first conveyance unit 18, both conveyance path surfaces 31 and 32 of the second conveyance unit 30 come into contact with the bottom surface 3 of the base plate 12 of the pallet 100, so that the pallet loK can be conveyed smoothly. This applies force and allows the transport to continue moving forward.

FIG. 6 is a hot water diagram showing a joining form in which the first conveyance unit 18 and the second conveyance unit 30 described above are arranged in series alternately. As is clear from FIG. 6, in the pallet conveying device of the present invention which is formed by connecting the first and second conveying units) 18°30 in series, the conveyance of the pallets) 10 is simply carried out between the pallets 7) and 100 pedestals. The lower surface 13 of the plate 12 or the lower bottom surface 15 of the columnar body 14 and the conveyance path surface 22 or: N, 3
2, it is possible to transport several pallets 10 in any manner, for example, synchronously with each pallet 10 spaced apart, or to convey multiple pallets 10 synchronously It is also possible to simultaneously transport pallets 10 in a state where they are glued back and forth, and it is also possible to stop one or several pallets 10 with a stopper.
It is also possible to adopt an asynchronous transport mode in which other pallets IO are transported forward. In this case, the above-mentioned stopper does not stop the conveyance path surfaces 22, 31.32 in the first and second conveyance units 18.30, but rather protrudes arbitrarily in front of the pallet (10) which is being conveyed forward. It is a book formed by an arm mechanism etc. that blocks the advance of 10. That is, if the pallet 10 is temporarily stopped by the stopper using such a protruding arm mechanism, the conveyance flow of the pallet 10 can be adjusted and controlled as appropriate, and, for example, the number of pallets 10 passing per unit time can be adjusted. This also makes it possible. In FIG. 6, 40 is a stopper made of the above-mentioned protruding arm mechanism heated with hot water, and "L#" indicates the direction of entry and exit of the skeleton protruding arm mechanism 40, which stops the pallet 10 when it is protruded. Of course, when the pallet 10 is stopped, the conveyance path surface 22 or 3
1.32, it goes without saying that the traveling operation continues until the pallet 10 is stopped, and other pallets 10 are transported.

In the above-mentioned embodiment, the first conveyance unit 18 and the second conveyance unit 30 are each described as an example in which the conveyance path surface 22, 31, 32 is formed by a straight and narrow running type slat conveyor belt. As shown in FIG. 7, the first conveying unit 18 can be used as a pallet conveying device, for example, by using a conveying unit in which a conveying road surface 22 is formed by a curved slat conveyor belt, which has recently been used in airport baggage conveyors. It is also possible to introduce a curved conveyance path into a part of the conveyance path to change the pallet conveyance direction. In addition, in FIG. 7, the support stand 19' is formed into a curved shape, and both guide surfaces 20', 21 of the carcass support stand 19' are formed in a curved shape.
A conveying path surface 22' consisting of a curved slat conveyor belt is formed in between. lW1#! In Fig. 7, 41.42 Fi is each slat sliding rail, and 43 is a guide wire of the conveying road surface 22' consisting of a slat conveyor belt.
The slats forming the slats are mutually slidably joined together with one edge slat along an arcuate sliding contact surface, and each slat is connected to the guide wire 43 via a suitable rotation bearing and a connecting culm. As a result, as the guide wire 43 travels, the conveyance path surface 22' forms a curved conveyance path along both curved guide surfaces 20' and 21'.

As is clear from the above description, the present invention utilizes the shape of a pallet consisting of a base plate for mounting one workpiece and a columnar body, and connects two types of conveyance units to the conveyance path surface that comes into contact with the pallet. By forming these pallets and arranging them alternately in the conveying direction, it is possible to form a pallet conveying device having a desired total conveying length.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the overall shape of a pallet conveyed by the conveying device according to the present invention, and FIGS. 2 and 3 are top views of a first conveying unit showing the components of the pallet conveying device according to the present invention. 4 and 45 are top views and side views of the second conveying unit which is a component of the pallet conveying device, and FIG. 6 is a method of connecting the pallet conveying device according to the present invention using hot water. A side view and FIG. 7 are hot water top views showing an example of the configuration of a conveyance unit having a curved shape. DESCRIPTION OF SYMBOLS 10... Pallet, 12... Pedestal board, 13... Lower surface, I4... Column body, 15... Lower bottom surface, 18...
・First transport unit, 19...support stand, 20.21
...Guide surface, 22...Transportation road surface, 30...Second transport unit, 31.32...Transportation road surface, 33...
Support stand, 40... stopper. b Figure 2? S4 figure

Claims (1)

[Claims] In a pallet conveying device for conveying a pallet consisting of a pedestal plate for attaching a workpiece and a columnar body provided on the lower surface thereof, a pair of left and right conveyance road surfaces are provided which contact and engage with the lower surface of the pedestal plate to feed and travel the pallet. A second conveyance unit having a single conveyance path that contacts and engages the lower bottom surface of the columnar leg to feed and travel the pallet is alternately coupled in the pallet conveyance direction. A pallet conveying device.