JPH0764405B2 - Conveyor equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is directed to bulk powders, agglomerates, and relatively light materials such as empty cans, paper boxes, and styrofoam without spilling, over a long distance, in large quantities and at high speed. Moreover, the present invention relates to a conveyor device capable of not only linear transport but also vertical and lateral curved transport.

[0002]

2. Description of the Related Art Conveyor belt itself is formed into a cylindrical shape and is conveyed as a conveyor device capable of large-scale and high-speed transportation in a straight line as well as curved transportation up, down, left and right without causing spillage. Is known. However, in this device, the support members must be arranged at regular intervals to maintain the conveyor belt in a cylindrical shape, which makes the device expensive. In addition, when the conveyor belt is formed in a cylindrical shape, the joint portion of the conveyor belt is at the top, but the returning belt faces downward, and there is a drawback that the remainder of the conveyed material is spilled. In addition, a cover is required to prevent the belt itself from being exposed to the weather.

Japanese Unexamined Patent Publication (Kokai) No. 58-139904 discloses a device in which pipes are separately arranged on the outward path and the return path, a conveyor belt is bent into a cylindrical shape and is passed therethrough, and the conveyor belt is supported by air. ing. However, since this device bends the belt into a cylindrical shape, the friction between the belt and the inner surface of the pipe is over the entire surface, and the frictional resistance is large. As a result, there is no choice but to increase the amount of air for floating the belt, and the pressure is relatively high. In addition, the piping for feeding / exhausting air, the device for adjusting the pressures thereof, and the like become complicated.
Further, since it is difficult to completely float the belt with air, there is a problem that the transport power must be increased. In addition, since it requires a large amount of so-called trough conversion distance to roll the belt into a cylindrical shape and spread it flat with the head pulley and the tail pulley, the actual cylindrical portion, that is, the effective length is smaller than that of an actual device. It has the drawback of becoming shorter. Since the belt is rolled into a cylindrical shape, the frictional resistance at the curved portion is further increased than at the straight portion. For this reason, the radius of curvature becomes large, and a small turn is not available in the layout, so that there are many restrictions in space. Furthermore, while the structure of the air blowing groove of the pipe for guiding the belt is complicated and requires a large manufacturing cost, the pipe must be divided into two parts in terms of its manufacturing processing and maintenance, and as a result, Not only does it cost manufacturing costs,
The weight of the pipe is heavy, and construction costs such as frame and installation are required.

JP-A-51-55577 discloses a double pipe in which a flat flat belt is curved in a circular or semi-circular cross section, and the outer pipe is concentrically attached to the outside of the inner pipe. Moving along the inner peripheral surface of the inner pipe, the curved flat belt returns to the original flat flat belt after the curved flat belt has passed through the inner pipe,
After this is folded back, it is curved again in a circular cross section, and is moved along the outer peripheral surface of the inner pipe between the inner pipe and the outer pipe, so that the conveyed object placed on the flat belt upper surface is conveyed. A transportation method using a belt conveyor for transportation is disclosed. However, this method moves the belt along the outer peripheral surface of the inner pipe between the inner pipe and the outer pipe in the returning path of the belt. For this reason,
A large number of outer rails are arranged on the outer peripheral surface of the inner pipe, and a mechanism for guiding and supporting the belt on the return path is required, which complicates the structure. Further, with this structure, it is completely impossible to use the belt on the return path to convey the material.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and its purpose is to save space, cost, energy, weight, and construction cost with a simple structure. An object of the present invention is to provide a conveyer device that can be designed. A further object of the present invention is to provide a conveyor device which can be transported in a curve, has a rainproof and windproof cover, and is free from spillage of dust and dust in the middle portion. A further object of the present invention is to provide a conveyor device that can convey material even on the return path.

[0006]

SUMMARY OF THE INVENTION A conveyor device according to the present invention comprises an outer pipe, an inner pipe arranged inside the outer pipe, and a lower portion of the inner pipe and the outer pipe between the inner pipe and the outer pipe. A flexible conveyor belt that travels without being supported by a support member in a curved shape along each inner wall, and a conveyor that travels through the inner pipe.
The cross section of the belt has a substantially semicircular shape .

Further, according to the present invention, it is possible to adjust the amount of blown air which is further attached to at least the lower portion of the outer tube and floats the conveyor belt arranged on the inner surface of the outer tube with air.
And an air inlet provided in the lower portion of the inner pipe to introduce air from the outer pipe into the inner pipe and float the conveyor belt disposed on the inner surface of the inner pipe. Furthermore, according to the present invention, a gap is formed between the lower portion of the inner pipe and the lower portion of the outer pipe, which is sufficient to convey the conveyed product by the conveyor belt running on the inner wall of the lower portion of the outer pipe.

[0008]

In the conveyor device of the present invention, the forward and backward belts are guided by the inner pipe and the outer pipe, respectively, and travel in a curved shape along the lower inner wall thereof. As the conveyor belt, it is preferable to use a resin belt or the like which has a small frictional resistance with the inner and outer tubes. If a belt made of this material is used, it is not necessary to levitate the conveyor belt when the transport distance is relatively short. Further, by appropriately setting the arrangement of the inner pipe with respect to the outer pipe, it becomes possible to transport the conveyed product also on the return path belt running on the outer pipe.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A conveyor device according to the present invention will be described below with reference to the illustrated embodiments. 1 is a schematic view of the whole, FIG. 2 is a partially cutaway perspective view of a main part, FIG. 3 is a plan view, FIG. 4 is a side view, and FIG. 5 is a cross-sectional view at a predetermined position. In this conveyor device, the inner pipe 10 and the outer pipe 20 are arranged in a coaxial double tubular shape,
Further, a head pulley 30 and a tail pulley 40 are provided on both sides of the inner and outer tubes 10 and 20 (see FIGS. 1 and 5).
(B)). A conveyor belt is stretched between these pulleys 30 and 40, and the forward belt 5 of the conveyor belt
1 is a curved shape along the lower part of the inner wall of the inner pipe 10, the return belt 5
2 runs in a curved shape along the lower portion of the inner wall of the outer tube 10. At both ends of the inner and outer tubes 10 and 20, the inner tube 1
A seal member 60 is attached to the gap between the outer tube 20 and the outer tube 20, except for the passage point of the return belt 52.

Further, on both ends of the inner and outer tubes 10 and 20, as shown in FIGS.
1, a return path guide plate 72 is provided so as to project. As shown in FIGS. 1 and 5A, an upper end of the outer pipe 20 on the tail pulley 40 side is provided with a conveyed product inlet 21 that penetrates the outer pipe 20 to the inner pipe 10.

Further, in the lower part of the outer tube 20, as shown in FIG.
As shown in, the air blowing holes 22 are formed at regular intervals,
Further, air blowing holes 23 are opened in the side portions, and air blowing holes 11 are also formed in the lower portion of the inner pipe 10 at regular intervals. An air blowing device is attached to the air blowing holes 22 and 23 of these outer tubes 20. This device is shown in Figure 1.
The air pipe 8 is attached to the blower 82 provided with the air filter 81.
3, 84 are connected in parallel, and the damper 85 and the air nozzle 86 are connected to one air pipe 83. The air nozzle 86 is connected to the lower air blowing hole 22 through the air duct 87.
(See (d) of FIG. 5). The other air pipe 84 is connected to the side air blowing hole 23 via a damper 88 and a duct 89. Reference numeral M in the drawing denotes a conveyed product, reference numerals 91 and 92 in FIG. 5A denote inner pipe inspection ports and outer pipe inspection ports, respectively, and reference numeral 93 in FIG. 4 denotes a snap pulley. The inner pipe 10 is supported on the outer pipe 20 by an inner pipe inspection port 91 at the upper portion. It is also possible to directly feed the conveyed product to the inlet side of the outward belt of the inner pipe without providing the inlet for the conveyed product in the inner pipe 10. Next, the operation of the conveyor device configured as described above will be described.

Head pulley 30 and tail pulley 4
0 is rotationally driven as indicated by the arrow to move the conveyor belt as indicated by the arrow. As shown in FIGS. 2 and 5, the outward path belt 51 has a curved shape along the lower portion of the inner wall of the inner pipe 10 and travels in the inner pipe 10. On the outbound belt 51 that travels, the conveyed article inlet 21 or the outbound belt 5
The article M is introduced from the inlet side of 1. The conveyed article M is placed on the outward belt 51 and travels in the inner pipe 10. Inner tube 10
When it comes out and comes to the outlet on the side of the head pulley 30, the conveyed product M drops there and is stored in a predetermined container (not shown). The conveyer belt after returning the conveyed product M, that is, the return belt 52 passes through the head pulley 30 and enters the outer tube 20. There, the return path belt 52 has a curved shape along the lower portion of the inner wall of the outer tube 20, and travels in the outer tube 20 in the arrow direction (tail pulley direction).

Here, the air blowing device is not particularly necessary when the conveyor belt is made of a material having a low frictional resistance. However, if the conveyor belt is long, or if frictional noise must be avoided as much as possible, the air blowing device can be activated. That is, the blower 82
When blowing air into the air tube 83, 8 4, after the air blow amount is adjusted by the respective dampers 85 and 88, the outer tube from the air blowing holes 22 and 23 through the duct 87, 89 2
Air is blown into 0. The air blown into the outer pipe 20 through the lower air blowing hole 22 pushes up the return belt 52 running along the lower portion of the inner wall of the outer pipe 20. As a result, the return path belt 52 travels in a state of floating the air. The air after the return path belt 52 is pushed up and the air blown into the outer tube 20 through the side air blowing holes 23 have a structure in which both ends of the outer tube 20 have a sealed structure.
Is blown into the inner pipe 10 through an air blowing hole 11 provided in the lower part of the. The air blown into the inner pipe 10 from the air blowing hole 11 pushes up the outward path belt 51 running along the lower portion of the inner wall of the inner pipe 10. As a result, the outward path belt 51 travels in a state of floating air.

FIG. 6 and FIG. 7 show an embodiment in which the outward belt 51 and the inward belt 52 are also used for conveying the conveyed object. The same parts are designated by the same reference numerals. In this conveyor device, an inner pipe 10 and an outer pipe 20 are arranged in a coaxial double-tube shape, and a head pulley 30 and a tail pulley 40 and guide pulleys 41, 41 are provided on both sides of the inner and outer pipes 10, 20. A conveyor belt is stretched between the pulleys 30, 40, 41, and the forward belt 51 of the conveyor belt is stretched.
Is a curved shape along the lower part of the inner wall of the inner tube 10, the return belt 52
Runs in a curved shape along the lower portion of the inner wall of the outer tube 20 . At both ends of the inner and outer pipes 10, 20, the inner pipe 10
A seal member 60 is attached to the gap between the outer tube 20 and the outer tube 20, except for the passage point of the return belt 52.

Further, at the upper end of the outer pipe 20 on the tail pulley 40 side, as shown in FIG. 7A, a first conveyed product inlet 21 penetrating to the inner pipe 10 is provided. As shown in FIG. 7B, a second conveyed product inlet 24 that penetrates to the lower portion of the outer pipe 10 is provided on both sides of the upper side of the head pulley 30 side. Furthermore, the inner and outer tubes 10, 20
As shown in FIG. 7C, a second conveyed product outlet 100 is provided below the end of the tail pulley 40 side.

It should be noted that the outer tube 20 may not be provided with a feed inlet, and the conveyed material may be directly fed to the inlet side of the return belt of the outer tube. Although not shown, the structures of the guide plate, the air blowing device, the air blowing port, etc. are the same as those in the above-described embodiments. Next, the operation of the conveyor device configured as described above will be described.

Head pulley 30 and tail pulley 4
0 is rotationally driven as indicated by the arrow to move the conveyor belt as indicated by the arrow. As shown in FIGS. 6 and 7A and 7B, the outward belt 51 has a curved shape along the lower portion of the inner wall of the inner pipe 10 and travels inside the inner pipe 10. The first conveyed product entrance 2 is provided on the traveling outward belt 51.
1 or the first conveyed product M from the entrance side of the outward belt 51
Throw in. The first conveyed product M is placed on the outward belt 51 and travels in the inner pipe 10. When exiting the inner pipe 10 and coming to the outlet on the side of the head pulley 30, the conveyed product M falls and is stored in a predetermined container (not shown). The conveyor belt after the transport of the transported material M, that is, the return belt 52
Enters the outer tube 20 through the head pulley 30. There, the return path belt 52 has a curved shape along the lower portion of the inner wall of the outer tube 20, and travels in the outer tube 20 in the arrow direction (tail pulley direction). The second conveyed product N is loaded from the second conveyed product inlet 24 onto the traveling return belt 52. The second conveyed object N is placed on the return path belt 52 and travels inside the outer tube 20. Out of the outer tube 20, guide pulleys 41, 4
When it comes to the exit on the 1st side, the conveyed object N is there and the return exit 100
Then, it falls into the container and is stored in a predetermined container (not shown). The return belt that has conveyed the conveyed object N returns to the tail pulley 40 again.

Next, various embodiments of the present invention will be described with reference to FIG. (A) is an example in which the position of the inner pipe 10 is eccentrically arranged above the outer pipe 20. By this,
A sufficient space can be formed between the lower portion of the inner wall of the outer pipe and the inner pipe, and the return path belt can be easily used for conveyance. (B) shows an air blowing device attached to the conveyor device of (a). Since the structure is the same as that of the above-mentioned embodiment, the same reference numerals are given and the explanation is omitted. In (c), both the inner tube 10 and the outer tube 20 are elliptical. With this shape, it is not necessary to bend the conveyor belt largely, so that the frictional resistance between the conveyor belt and the inner and outer pipes can be further reduced, and it becomes easy to carry without using an air blowing device. (D)
Shows an air blowing device attached to the conveyor device of (c) .

[0019]

According to the present invention, since the conveyor belt is formed in a curved shape rather than a cylindrical shape to convey the material, the force of the belt pushing the inner and outer pipes is relatively weak, and the belt between the belt and the inner and outer pipes is relatively weak. Friction resistance is reduced. As a result, it is not necessary to levitate the belt, especially when it is conveyed using a resin belt having a low frictional resistance. Also, the amount of air used can be small when air is levitated. Further, in the case of curved transportation, since it is guided by the inner and outer pipes, vertical and horizontal curved transportation becomes possible. In particular, the bending condition (radius of curvature) is small compared to the case where the belt is formed into a cylindrical shape, which is convenient in terms of arrangement.

Further, since the belt need only be formed in a curved shape, the trough conversion distance between the head pulley and the tail pulley and the intermediate portion can be reduced, and the effective length of the conveyor can be increased. Moreover, since the amount of deformation is small, it is not necessary to use a special belt having a large amount of deformation.

Further, according to the present invention, since the outward path belt and the return path belt are externally housed in one tube, it is possible to prevent the intrusion of wind and rain, the spillage of the conveyed product, and the generation of dust. In addition, there are no accidents such as people getting caught in the belt when approaching, and it is simple and aesthetically pleasing.

Furthermore, since the conveyor belt moves along the inner peripheral surfaces of the inner and outer tubes, maintenance of the intermediate portion for supporting and maintaining the shape of the conveyor is not necessary. In particular, it is not necessary to provide a structure that allows the pipe to be disassembled, a corridor for maintenance, a carrier roller, a return roller, or the like. In addition, no guide rail is required to support the return conveyor belt. Therefore, the production cost and the construction cost are low, the running power is low and the running cost is low, and the maintenance thereof is unnecessary.

Since the open surface of the conveyor belt is upward in both the forward and backward paths, it is possible to convey the conveyed goods not only in the forward course but also in the backward conveyer belt. For example, multiple conveyance such as carrying raw materials in the forward course and products in the backward course is required. Can be realized according to.

Due to the double pipe structure, when the air blowing device is used, the return belt floating air blown into the outer pipe is used and blown into the inner pipe, and is used as the forward belt floating air. It becomes possible to do. Therefore, the air blowing device is not complicated.

[Brief description of drawings]

FIG. 1 is an overall schematic diagram showing an embodiment of the present invention.

FIG. 2 is a perspective view of a main part of FIG.

FIG. 3 is a plan view of FIG.

FIG. 4 is a side view of FIG.

5 is a cross-sectional view of a main part of FIG. 1, in which (a) is a conveyed product inlet portion, (b) is an arrangement of inner and outer tubes and a reciprocating passage belt, (c) is an air blowing hole portion, and (d) is an outer portion. Air blow hole part of pipe, (e)
Indicates an air blow hole portion of the inner pipe.

FIG. 6 is an overall schematic view showing a different embodiment of the present invention.

7 is a cross-sectional view of a predetermined portion of the air blowing part of FIG.
(A) shows a forward entrance, (b) shows a return entrance, and (c) shows a return exit.

FIG. 8 is a diagram showing still another embodiment of the present invention,
(A) is an example in which the position of the inner pipe is eccentrically arranged above the outer pipe, (b) is an example in which an air blowing device is attached to the conveyor device in (a), and (c) is both the inner pipe and the outer pipe. Example of elliptical shape,
(D) is an example in which an air blowing device is attached to the conveyor device of (c).

[Explanation of symbols]

10 ... Inner tube, 20 ... Outer tube, 21 ... Transported material inlet, 22 ... Lower air inlet, 23 ... Side air inlet, 24 ... Second transported material inlet, 30 ... Head pulley, 40 ... Tail Pulley, 51 ... Forward belt, 52 ... Return belt, 60 ...
Seal member, 71 ... Forward guide plate, 72 ... Return guide plate, 81 ... Air filter, 82 ... Blower, 8
3, 84 ... Air pipe, 85, 88 ... Damper, 86 ... Air nozzle, 87, 89 ... Duct, 91 ... Inner pipe inspection port, 92
Outer pipe inspection port, 93 ... Snap pulley, 100 ... Second conveyed product outlet.

Claims (4)

[Claims] 1. A double pipe structure comprising an outer pipe and an inner pipe arranged inside the outer pipe, wherein the inner pipe and the outer pipe respectively extend along the lower inner walls of the inner pipe and the outer pipe. Curved support member
Substantially semicircular conveyor belt cross section comprising a flexible conveyor belt running without being supported, traveling inner tube is
Conveyor device with an arc shape . 2. An air blowing means, which is attached to at least a lower portion of an outer tube, and which blows air onto a conveyor belt running along an inner wall of the lower portion of the outer tube and floats the air so that an air blowing amount can be adjusted .
2. The conveyor device according to claim 1, further comprising an air inlet provided in the lower portion of the inner pipe to introduce air from the outer pipe into the inner pipe to float a conveyor belt running along the inner wall of the lower portion of the inner pipe. Between the wherein the tube bottom and the outer tube lower, sufficient space is formed for conveying a conveyance object in a conveyor belt which runs along the outer tube lower inner wall, along the bottom inner wall of the inner tube hand
Travels along the traveling conveyor belt and the lower inner wall of the outer tube
One of the conveyor belts
The conveyor device according to claim 1 or 2 , wherein one of them constitutes a return conveyor belt . 4. Claim that the inner and outer tubes are circular tubes
Item 5. A conveyor device according to any one of items 1 to 3.