JPH06247524A - Device for forming pipe conveyer - Google Patents

Abstract

PURPOSE:To smoothly form a belt into a cylindrical shape by forming a stepped part in a part of the inner periphery of forming means in a cylinder holding device for wrapping the conveyancewise intermediate part of a belt for conveying granule or the like, into a substantially cylindrical shape, and by gradually decreasing the diameter of the inner periphery of the forming means in the conveyancewise direction. CONSTITUTION:A planar belt 3a stretched between a drive pulley and a driven pulley 2 is rounded with end parts of the belt are precisely overlapped with each other. The rounded cylindrical belt 3b is held in its shape by cylinder holding rollers 6 which are arranged at predetermined intervals, and accordingly, materials to be conveyed, such as granule are conveyed being wrapped thereby. The cylinder holding device 13 has planar forming means 14 which is formed in a substantially circular shape so as to cover around the belt body 3 and which has terminal end parts 14a that are vertically deviated from each other so as to form a stepped part H in a part of the inner periphery thereof, and to gradually reduce the diameter of the inner periphery in the conveying direction T.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forming device for a pipe conveyor, and more specifically, a forming device for forming a belt into a circular belt by overlapping both ends of a belt with a cylindrical holding device so as to wrap them over a wide area. It is about.

[0002]

2. Description of the Related Art Conventionally, in order to carry goods such as powder and granules, a belt main body is formed into a cylindrical shape in a belt line to wrap the goods, and the goods are conveyed in a completely sealed state. There is known a pipe conveyor system that prevents spillage and scattering, and also prevents the transported material attached to the surface of the belt body from falling on the return side.

By the way, in the pipe conveyor system as described above, as shown in FIGS. 15 and 16, an endless flat belt 3a wound around a driving pulley 1 and a driven pulley portion 2 is provided on the upper outward path side. In order to make both the flat belt 3a on the lower return path and the cylindrical belt 3b together,
And, as shown in FIG. 18, the flat belt 3 is provided at the forming portion P and the forming portion Q provided in the belt conveying line.
a forming roller 4 for forming a into a cylindrical shape,
It is installed and installed on.

The forming roller 4 prevents the belt ends 3c and 3d from abutting contact with each other, and the overlapping belt ends 3c and 3b of the cylindrical belt 3b are formed so that the belt ends 3c and 3d can be smoothly formed into a cylindrical shape. It is arranged so that 3d is pushed down by the pressing roller 4a. A circular holding roller 6 is attached via a bracket 9 to a support frame 5 provided at a predetermined interval in the belt conveying line, and the bracket 9 is attached to a support plate 8 in a polygonal shape by bolts 10. The support plate 8 is attached to the support frame 5.

The structure of the pipe conveyor on the forward path side is such that the article to be conveyed is conveyed through a supply chute 11 installed at a semi-arcuate belt position between the flat belt 3a of the driven pulley 2 and the cylindrical belt 3b. 7 is stacked on a semi-circular belt, and then the belt is formed in a cylindrical shape so that the conveyed product 7 is contained inside. Further, the cylindrical belt 3b runs through the circular holding roller 6, passes through the cylindrical holding roller 6 arranged at the end, and then opens to become a semi-arcuate state, then becomes the flat belt 3a, and inside the belt. The contained article 7 is configured to be discharged via the discharge chute 12.

[0006]

However, in the endless belt main body 3 wound between the drive pulley 1 and the driven pulley 2 of the pipe conveyor system configured as described above, the flat belt 3a Cylindrical belt 3b
The belt ends 3c and 3d during the molding process are constantly moved to the left and right with respect to the belt traveling direction within a range that does not hinder normal use.

However, when the belt conveyer 7 (for example, powder particles or agglomerates) is loaded on the belt in an excessive amount or in a biased state, the belt largely moves and rotates left and right with respect to the traveling direction. The belt disengages from the forming roller 4 so that the belt cannot be formed and held in a circular shape, which hinders the running of the belt, and the belt ends 3c and 3d come into contact with the support frame 5 to wear the belt ends 3c and 3d. There was a problem called damage.

Further, the belt formed on the cylindrical belt 3b by the forming roller 4 has a belt end portion between the attaching position of the forming roller 4 and the cylindrical holding roller 6 which is attached first in the belt traveling direction. Since 3c and 3d try to get up, the belt ends 3c and 3d come into butt contact,
The belt ends 3c and 3d are abnormally worn, or the belts run in the abutted state as they are, and the cylindrical belt 3b is formed into a polygonal belt.
There is a problem that the cylindrical belt 3b cannot be smoothly formed because the upper and lower positions of c and 3d are reversed.

The present invention has been devised in view of such conventional problems. The end portion of the circular belt main body does not come off from the cylindrical holding device, and the belt end does not come into butt contact and butt joint. It is an object of the present invention to provide a molding apparatus for a pipe conveyor in which the portions are correctly overlapped and can be smoothly formed into a circular belt, and the running stability and maintenance of the belt can be significantly improved. .

[0010]

In order to achieve the above object, the present invention forms a cylindrical holding device of a pipe conveyor forming device so that the forming means is formed into a substantially circular shape so as to cover the periphery of the belt main body. The gist of the invention is that a step is provided on a part of the inner circumference of the means, and the diameter of the inner circumference of the forming means is gradually reduced in the traveling direction of the belt body.

[0011]

The present invention is configured as described above, and the belt main body is wound in a spiral shape by the cylindrical holding device even when the belt main body is loaded with an excessive amount of goods or an uneven load while the pipe conveyor is in operation. Since it is formed and wrapped in a cylindrical shape, there is no spilling of the load, it does not come off from the circular holding device, the belt ends do not butt-contact and butt-join, and the belt ends correctly overlap and form a smooth circle. Since it can be molded into a belt body having a shape, the running stability and maintainability of the belt can be significantly improved.

[0012]

Embodiments of the present invention will be described below with reference to the accompanying drawings. The same components as those in the conventional example are designated by the same reference numerals and the description thereof will be omitted. FIG. 1 is a front view of a pipe conveyor showing a first embodiment of the present invention, and FIG. 2 is a plan view of FIG. 1, showing an endless belt body 3 of the pipe conveyor.
Is a drive pulley 1 supported via a bearing (not shown)
And a driven pulley 2 supported via a bearing (not shown).

The upper outward belt between the drive pulley 1 and the driven pulley 2 and the flat return belt 3a, which is the lower return belt, are formed by rounding and rolling the belt ends 3c and 3d correctly. The cylindrical belt 3b is held by a cylindrical holding roller 6 arranged at a predetermined interval between the driving pulley 1 and the driven pulley 2 so that the cylindrical belt 3b runs smoothly.

The circular holding roller 6 is attached to a plurality of support frames 5 via brackets 9 as in the conventional FIG. 17 of FIG. 10, and the brackets 9 have a polygonal shape (in the present embodiment, approximately six). It is attached to the support plate 8 by means of bolts 10 and is also attached to the support frame 5. Next, a detailed description will be given of the configuration on the upper outward path side of the pipe conveyor in the embodiment of the present invention.

The upper outward path of the pipe conveyor is shown in FIG.
As shown in FIG. 2, the conveyed product 7 is transferred from the flat belt 3a of the driven pulley 2 to the semi-circular belt via the supply chute 11 installed at the semi-circular belt position where the circular belt 3b is formed. After loading on top, make the belt circular,
It is configured to be included inside. Further, the circular belt 3b travels through the circular holding roller 6, passes through the circular holding roller 6 arranged at the end, and then opens to become a semi-circular state, and then becomes a flat belt 3a. It is configured to discharge the conveyed product 7 contained in the above through the discharge chute 12.

Further, in the structure on the lower return path side of the pipe conveyor, since the conveyed product 7 may be attached to the belt discharged by the discharge chute 12 to some extent, it should be prevented from spilling on the lower return path side. After the flat belt 3a passes through the drive pulley 1, the flat belt 3a is rounded into a circular belt 3b, travels through the circular holding roller 6, and is finally arranged. After passing through and opening and becoming a semi-circular state, it becomes a flat belt 3a,
The driven pulley 2 is reached. Such an operation is repeated.

Next, the belt end portion 3 of the flat belt 3a.
A pipe conveyor molding apparatus according to the present invention, in which c and 3d are overlapped to form a cylindrical belt 3b, will be described on the upper outward path side. The above-mentioned forming device for the upper outward path pipe conveyor includes the flat belt 3 of the driven pulley 2.
The flat belt belt 3a is installed in a portion X from a to the cylindrical belt 3b before it becomes a cylindrical belt 3b, and the flat belt belt 3a having a semi-arcuate shape is formed in a vortex and covers a wide range. That is, as shown in FIGS. 3 to 5, the cylindrical holding device 13 of the pipe conveyor forming device forms the flat plate forming means 14 in a substantially circular shape so as to cover the periphery of the belt main body 3, and at the same time, forms the forming means 14. The terminal portion 14a is vertically shifted to provide a step H on a part of the inner circumference, and the diameter of the inner circumference of the forming means 14 is formed so as to be gradually reduced in the traveling direction T of the belt body 3. .

With this configuration, for example, when the belt conveyer 7 is loaded on the belt in an excessive amount and in an offset state, the belt main body 3 largely moves to the left and right with respect to the traveling direction T and rotates. Even if it does, since the outside of the belt main body 3 is surrounded by a vortex, the belt main body cannot be formed into a cylindrical shape as in the conventional molding device, and the belt end portions 3c and 3d are not supported by the support plate. Even if the belt ends 3c and 3d try to rise up between the driven pulley 2 and the cylindrical holding roller 6, the endless belt body 3 does not come into contact with a structure such as 8 and the bracket 9.
Since the forming means 14 of the cylindrical holding device 13 in this embodiment wraps the belt main body 3 in a wide range, the belt ends 3c and 3d do not rise and do not butt-contact with each other, so that the cylindrical belt 3b is smoothly formed. It is something that can be held. The lower return path Y portion has the same structure as the molding means 14 of the cylindrical holding device 13 attached to the upper forward path X portion, and detailed description thereof will be omitted.

FIG. 6 shows a second embodiment of the present invention, which is an enlarged sectional view taken along the line AA of FIG.
In order that the belt main body 3 can smoothly run on the inner wall surface of the molding means 14, a low friction body 15 having a low friction coefficient such as ultrahigh molecular weight polyethylene or Teflon is attached to the inner wall surface of the molding means 14. This allows the cylindrical belt 3b to be easily molded.

Since the other structure is the same as that of the first embodiment, the same reference numerals are given and the description thereof will be omitted. Figure 7
A third embodiment of the present invention is shown. In this embodiment, the belt main body 3 is provided with a plurality of tubular or tubular hollow pipes 16 mounted on the inner peripheral surface of the molding means 14 at predetermined intervals. By injecting a lubricating fluid and a lubricating fluid 17 such as compressed air, the inner wall surface of the forming means 14 and the cylindrical belt 3b.
To form a lubrication film between them and to reduce friction between the cylindrical belt 3b and the forming means 14 so that the belt body 3 slides smoothly and the cylindrical belt 3b can be smoothly formed. It was done. Since the other configurations are similar to those of the first embodiment, the same reference numerals are given and the description thereof is omitted.

FIG. 8 shows a fourth embodiment of the present invention. In this embodiment, a ball-shaped and cylindrical roller-shaped rotatable rotary member 18 is provided on the surface of the forming means 14 that contacts the cylindrical belt 3b.
The cylindrical belt 3b and the rotating body 18 are brought into rolling contact with each other by the mounting of the circular belt 3b.
And the friction between the inner wall surface of the molding means 14 becomes small,
The belt main body 3 slides smoothly, and the cylindrical belt 3b can be smoothly formed. In addition,
The other structure is the same as that of the first embodiment, and therefore, the same reference numerals are given and the description thereof is omitted.

FIG. 9 shows a fifth embodiment of the present invention, in which a plurality of vibration generators 19 are mounted on the circumferential surface of the molding means 14 and the mounted vibration generators 19 are vibrated. By creating a gap in the surface where the belt main body 3 and the inner wall surface of the molding unit 14 are in contact with each other to reduce friction on the contact surface, the belt main body 3 slides smoothly and has a smooth cylindrical shape. The belt 3b can be molded. Since the other configurations are similar to those of the first embodiment, the same reference numerals are given and the description thereof is omitted.

11 and 12 show a sixth embodiment and a seventh embodiment of the present invention. In each of these embodiments, the forming means 14 of the cylindrical holding device 13 has a spiral shape of the belt main body 3. Shaped groove portions 20a, 20b that are hollowed out in a circular cross-section having a step on the same circumference so as to follow are configured by a single and a plurality of plate-shaped forming devices 21, and the single and a plurality of plate-shaped forming devices 21 are used. By enclosing the belt body 3 in a wide range, the belt body 3 slides smoothly and the cylindrical belt 3b can be smoothly formed.

Since the other structure is the same as that of the first embodiment, the same reference numerals are given and the description thereof is omitted. 13 and 14 show an eighth embodiment and a ninth embodiment of the present invention, in which each of the embodiments is a molding means 14 of the cylindrical holding device 13.
In order to make the portion of the belt contacting the belt body 3 have a circular cross section having a step on the same circumference, a protrusion 22 is attached to the inner surface of the forming means 14, and the protrusion 22 is attached to form the belt. By enclosing the main body 3 in a wide range, the belt main body 3 slides smoothly and the cylindrical belt 3b can be smoothly formed. Since the other configurations are similar to those of the first embodiment, the same reference numerals are given and the description thereof is omitted.

[0025]

As described above, according to the present invention, in the cylindrical holding device, the forming means is formed into a substantially circular shape so as to cover the periphery of the belt body, and a step is provided on a part of the inner circumference of the forming means. Since the diameter of the inner circumference of the forming means is formed so as to be gradually decreased in the traveling direction of the belt main body, the belt ends are butt-contacted with each other, and the upper and lower positions where the belt ends overlap are reversed. Without, it is possible to form a pipe-shaped belt in a state in which both ends of the belt are reliably overlapped, it is possible to send the conveyed product supplied from the supply chute to the discharge chute, to the belt discharged the conveyed product with the discharge chute, There is an effect that the endless belt can be wound around between the drive pulley and the driven pulley without spilling the remaining conveyed material attached, and the endless belt can be smoothly wrapped by the forming means. Because can, together with the belt body smoothly slides smoothly there is an effect of forming a cylindrical belt 3b.

[Brief description of drawings]

FIG. 1 is a schematic front view of a pipe conveyor showing a first embodiment of the present invention.

FIG. 2 is a schematic plan view of FIG.

3 is an enlarged cross-sectional view taken along the line AA of FIG.

FIG. 4 is an enlarged side view showing only the pipe conveyor molding apparatus taken along the line BB in FIG.

5 is an enlarged perspective view showing only the molding device for a pipe conveyor of FIG. 1. FIG.

FIG. 6 is an enlarged sectional view similar to FIG. 3, showing a second embodiment of the present invention.

FIG. 7 is an enlarged sectional view similar to FIG. 3, showing a third embodiment of the present invention.

FIG. 8 is an enlarged sectional view similar to FIG. 3, showing a fourth embodiment of the present invention.

FIG. 9 is an enlarged sectional view similar to FIG. 3, showing a fifth embodiment of the present invention.

10 is an enlarged schematic side view taken along the line CC of FIG.

FIG. 11 is an enlarged sectional view similar to FIG. 3, showing a sixth embodiment of the present invention.

FIG. 12 is an enlarged sectional view similar to FIG. 3, showing a seventh embodiment of the present invention.

FIG. 13 is an enlarged sectional view similar to FIG. 3, showing an eighth embodiment of the present invention.

FIG. 14 is an enlarged sectional view similar to FIG. 3, showing a ninth embodiment of the present invention.

FIG. 15 is a schematic front view of a conventional pipe conveyor.

16 is a schematic plan view of FIG.

FIG. 17 is an enlarged side view taken along the line DD of FIG.

18 is a schematic enlarged front view of a P part of FIG.

[Explanation of Codes] 1 Drive Pulley 2 Driven Pulley 3 Endless Belt 3a Flat Belt 3b Cylindrical Belt 3c, 3d Belt End 4 Forming Roller 4a Pressing Roller 5 Support Frame 6 Circular Holding Roller 7 Belt Conveying Object 8 Support Plate 9 Bracket 10 Bolts 11 Supply Chute 12 Discharge Chute 13 Cylindrical Holding Device 14 Forming Means 15 Low Friction Body 16 Hollow Pipe 17 Lubricating Fluid 18 Rotating Body 19 Vibration Generator H Steps 20a, 20b Shaped Grooves with Circular Section 21 Plate Forming Device 22 protrusion

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tadao Nakahara 760-7 Shimokagemori, Chichibu City, Saitama Prefecture (72) Inventor Takao Ohno 2-87 Someya, Omiya City, Saitama Prefecture

Claims (8)

[Claims] 1. A pipe comprising a cylindrical holding device for rolling an endless belt body wound around the driving pulley and the driven pulley into a spiral shape in a belt conveying line between the driving pulley and the driven pulley. In the forming device for a conveyor, the cylindrical holding device forms the forming means in a substantially circular shape so as to cover the periphery of the belt body, and provides a step on a part of the inner periphery of the forming means to form an inner periphery of the forming means. The pipe conveyor forming apparatus is characterized in that the diameter of the pipe is gradually reduced in the traveling direction of the belt body. 2. The method according to claim 1, wherein the forming means of the cylindrical holding device is formed of a flat plate, and the flat plate is wound in a spiral shape in the traveling direction of the belt main body, and steps are formed at both ends of the flat plate. Molding equipment for pipe conveyors. 3. The forming means of the cylindrical holding device is formed by a plurality of forming rollers, and the forming rollers are arranged so that the inner diameter thereof gradually decreases in the traveling direction of the belt main body, and both ends of the belt main body are arranged. The pipe conveyor molding apparatus according to claim 1, wherein the pipe conveyor molding apparatus is arranged so that a step is formed on the inner surface. 4. The pipe conveyor molding apparatus according to claim 1, wherein the molding means of the cylindrical holding device is divided in the traveling direction of the belt body. 5. The pipe conveyor molding apparatus according to claim 1, wherein a low friction member is provided on a surface of the molding means of the cylindrical holding device that is in sliding contact with the belt body. 6. The pipe conveyor molding apparatus according to claim 1, wherein a lubricating fluid is supplied to a surface of the molding means of the cylindrical holding device that slides on the belt body. 7. The molding apparatus for a pipe conveyor according to claim 1, wherein a rotating body is provided on a surface of the molding means of the cylindrical holding device that slides with the belt body. 8. The pipe conveyor molding apparatus according to claim 1, wherein a vibrating body is provided on a surface of the molding means of the cylindrical holding device that slides with the belt body.