JPH0592230U - Transport screw - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a carrying screw having excellent carrying ability. [Structure] A screw 1 is a long and flexible shaft 2, and a plurality of spiral wire strands 3 are wound around the shaft 2 at a predetermined lead L and a predetermined winding angle θ. And, and the work is conveyed by a plurality of spiral filaments 3.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a transport screw.

[0002]

[Prior Art]

 As shown in FIG. 10, a conventional conveying screw is a so-called single-threaded (winding) screw in which a single filament body b is spirally wound around a single shaft a. For example, it has been used in a conveying device for powder and the like.

In this powdery-particle conveying apparatus, the screw is provided in a circular guide tube and rotated by a motor, so that the powdery particles supplied from one end of the guide tube to the other end are The linear body b is configured to be conveyed.

[0004]

[Problems to be solved by the device]

 However, when a powder or granular material conveying device using a conventional conveying screw is used to convey the powder or granular material vertically or at a steep gradient, the force of the powder or granular material falling causes the single particle screw to convey the material. There was a limit to my ability. In addition, the above-mentioned screw has a problem that the mixing / stirring action of particles is small.

Therefore, an object of the present invention is to provide a conveying screw that solves the above-mentioned conventional problems.

[0006]

[Means for Solving the Problems]

 In the present invention, in order to achieve the above object, a plurality of spiral filaments are wound around one shaft.

[0007]

[Action]

 Since there are multiple spiral filaments, the transfer capacity (speed and quantity) of each type of work is greatly improved compared to conventional screws. In particular, when the granular material is conveyed vertically or at a steep slope, improvement of the conveying ability can be expected.

Moreover, the effect of mixing and stirring the powder and granules is excellent. Moreover, the screw of the present invention can be easily applied to the transportation of various works such as powder, bottles, bottles and cans.

[0009]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the drawings illustrating an embodiment.

FIG. 1 shows an embodiment of a conveying screw according to the present invention. The screw 1 is composed of a long and flexible shaft 2 and a winding around the shaft 2. And a plurality of spiral filaments 3 which are formed.

Further, the screw 1 has both a rigidity sufficient to sufficiently transmit the rotational torque applied from one end of the screw 1 to the other end and a flexibility that allows the screw 1 to be laid in a curved shape so as to be rotatable.

Specifically, the shaft 2 has a metal rope 4 such as a steel rope twisted wire in which a plurality of strands are twisted together in order to have flexibility and rigidity, and a coating provided on the metal rope 4. Layer 5 and.

It is desirable that the metal rope 4 contains a lubricant for reducing the friction between the wires, and the coating layer 5 is covered on the metal rope 4 in order to prevent evaporation of the lubricant. Is being worn.

In FIG. 1, two spiral filaments 3 each having a first filament 3a and a second filament 3b having a substantially circular cross section are attached to the shaft 2 at a predetermined lead L and a predetermined winding angle θ. It is wound.

In this case, the height dimension H1 from the outer peripheral surface of the shaft 2 (in the cross section including the shaft center of the shaft 2) to the apex of the first linear member 3a, and the outer peripheral surface of the shaft 2 to the second linear member 3a The height dimension H2 to the apex of 3b may be the same or different.

Further, the spacing dimensions P1 and P2 between the vertices of the adjacent first and second linear bodies 3a and 3b are the spacing dimensions P1 and P2 which are the pitch of the spiral linear body 3. They may be the same or different.

Further, the work is conveyed by the spiral filament 3 as will be described later, but from the viewpoint of transmission of conveyance power from the spiral filament 3 to the work and conveyance speed of the work, the spiral filament 3 The winding angle θ of 3 is set to 30 ° ≦ θ ≦ 60 °. Of these, 40 ° ≦ θ ≦ 50 ° is desirable, and in particular, θ is most desirable to be about 45 °.

That is, when the winding angle θ is θ <30 °, the conveying power of the spiral filament 3 cannot be sufficiently transmitted to the work, and when θ> 60 °, the conveying speed of the work becomes slow. is there.

The first filament 3a (and the second filament 3b) is a fiber obtained by twisting a plurality of polyester fibers such as Kevlar manufactured by DuPont as a commercial product. The reinforcing core 6 is composed of a bundle of reinforcing cores 6 and the surface layer 7 covering the reinforcing cores 6, and the reinforcing cores 6 prevent the pitch of the spiral filaments 3 from being disturbed.

As the material of the coating layer 5 of the shaft 2 and the surface layer 7 of the spiral filamentous body 3, synthetic resin such as polyethylene or polyether is used from the viewpoint of sliding resistance and durability.

FIG. 2 shows that three spiral filaments 3 consisting of a first filament 3a, a second filament 3b and a third filament 3c are wound around a shaft 2 and each height dimension H3 , H4, H5 are different from each other to constitute the screw 1.

In order to make the height dimensions H3, H4, H5 different in this way, for example, the outer diameter dimensions of the respective axes of the first linear body 3a, the second linear body 3b, and the third linear body 3c are set. If a plurality of spiral grooves having different depths are formed in the coating layer 5 (see FIG. 1) of the shaft 2 with different depths, and the spiral filament 3 is wound around the spiral grooves. Good.

The screw 1 configured as described above is used, for example, in the conveying device 8 illustrated in FIG.

The carrying device 8 is for carrying the work of various kinds of powdery or granular material 9 and is provided with a long pipe-shaped guide pipe 11 having a motor 10 attached to the upper end thereof. 1 is rotatably provided around the shaft center of the shaft 2. Further, one end of the screw 1 is connected to the motor 10, and the other end is supported by a bearing (not shown).

The powder particles 9 are supplied from the end portion (downward in the drawing) of the guide tube 11 and are rotated by a spiral linear member 3 of the screw 1 rotating in a predetermined direction (direction D in the figure). The body 9 is pushed up, rises in the guide tube 11, and is sequentially discharged from the branch discharge port 12.

Since the spiral filamentous body 3 has a plurality of filaments, when the powdery or granular material 9 is conveyed vertically (or at a steep slope) as shown in FIG. 3, compared with a conventional conveying device using a screw. Therefore, it can be expected that the transport capacity (speed and amount) will be greatly improved.

Moreover, if the screw 1 having different height dimensions H3, H4, and H5 shown in FIG. 2 is used for the conveying device 8, there is an advantage that the mixing / stirring effect of the powder / granule 9 becomes extremely large.

The screw 1 can also be used to convey a fixed work such as the bottle 13 shown in FIG.

In the conveying device 14 for a fixed work illustrated in FIG. 4, the screw 1 is attracted and supported by the guide rail 15 by the magnetic force of a large number of magnets 16 embedded in the guide rail 15 at regular intervals. ..

Further, one guide member 17 is arranged in parallel with the screw 1 at a constant interval. Further, one end of the screw 1 is rotatably supported by a bearing (not shown), and the other end of the screw 1 is connected to a motor via a bearing (not shown).

Each bottle 13 is suspended between the screw 1 and the guide member 17, and by rotating the screw 1 around the shaft center of the shaft 2, the collar portion 18 of the bottle 13 is spiral linear body. Press 3 to translate and transfer bottles 13 ...

Further, if the screw 1 constitutes the conveying device 19 as shown in FIG. 5 to FIG. 7, it is possible to convey a cylindrical container 20 such as a can or a bottle other than the above-mentioned fixed work.

In the conveying device 19 shown in FIGS. 5 to 7, the screw 1 is provided with a cylindrical guide body 22 having a single substantially parallel slit portion 21 formed continuously in the axial direction. It is rotatably inserted and held around its axis, and is brought into close contact with or slidably contacts the inner surface of the tubular guide body 22 with a minute gap.

Further, the guide members 23 are arranged in parallel along the tubular guide body 22. The guide members 23 are provided at three positions (in the illustrated example, both shoulder corners and bottom corners of the container 20) to guide and guide the container 20 and prevent the container 20 from collapsing during transportation.

Both ends of the screw 1 are rotatably supported by bearings 24 and 25, and the end of the screw 1 supported by one bearing 24 is connected to a motor 26. The slit portion 21 is formed with a width dimension that prevents the screw 1 from protruding from the slit portion 21.

The container 20 is inserted between the cylindrical guide body 22 and the guide members 23, and a screw in which a part of the outer peripheral portion of the container 20 rotates through the slit portion 21 that opens to the side. The container 20 is conveyed along the notches 27, 27 of the guide member 23 ...

In this transfer device 19 shown in FIG. 6, bottles with collars, spherical shaped workpieces or powder particles (stored in a container as a carrier) are cylindrical guide bodies and Although the structure and configuration of the guide member and the like are not shown, they can be transported.

Further, by using the screw 1 shown in FIG. 2, for example, a carrying device 28 as shown in FIGS. 8 and 9 can be constructed.

That is, if three kinds of conveyed objects 30a, 30b, 30c having contacted portions having different lengths A, B, C protruding from the slit portion 21 into the tubular guide body 22 are provided, The spiral filaments 3a, 3b, 3c that the parts contact are different.

As a result, it becomes possible to select the interval between the conveyed items. For example, in the case of a large-capacity transported material, it is advisable to use a short product having a plunge length of A (reference numeral 30a).

On the contrary, when it is desired to efficiently convey a large number of small-volume conveyed articles, the one having a long rush length C as indicated by reference numeral 30c may be used.

Further, the carrying device 28 shown in FIG. 8 can also perform distribution and carrying.

It should be noted that the present invention is not limited to the above-described embodiments, and design changes can be freely made without departing from the gist of the present invention. For example, in FIG. 1 and FIG. 2, the number of the spiral filaments 3 can be freely increased or decreased, and the winding sequence of the first, second, and third filaments 3a, 3b, 3c and the off-axis of FIG. The diameter can be changed freely.

[0044]

EFFECTS OF THE INVENTION Since the present invention is configured as described above, the following great effects can be obtained.

In comparison with the conventional screw (conveying device using the screw), the screw (conveying device using the screw) of the present invention significantly improves the conveying ability (speed and quantity) of various works. In particular, when the granular material is conveyed vertically or at a steep slope, improvement of the conveying ability can be expected. Moreover, it is possible to enhance the mixing / stirring action of the particles. Further, since the winding pitch of each spiral filament 3 is the same as the conventional one, the operation of winding the filament 3 around the shaft 2 is easy.

[Brief description of drawings]

FIG. 1 is a front view of an essential part showing an embodiment of the present invention.

FIG. 2 is a front view of an essential part showing another embodiment.

FIG. 3 is a cross-sectional front view of a main part of a powder and granular material conveying device.

FIG. 4 is a perspective view of a main part of a transfer device for a fixed work.

FIG. 5 is a simplified plan view of another conveyance device for a fixed work.

FIG. 6 is a perspective view of a main part of a tubular guide body and a screw.

FIG. 7 is a sectional side view of a main part.

FIG. 8 is a cross-sectional front view of main parts of another conveying device for a fixed work.

FIG. 9 is a sectional side view of a main part.

FIG. 10 is a front view of a main part of a conventional screw.

[Explanation of symbols]

 2 shaft 3 spiral filament

Claims (1)

[Scope of utility model registration request] 1. A screw for transportation, wherein a plurality of spiral filaments are wound around one shaft.