JP2938544B2 - Belt conveyor belt guide device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt conveyor using a wide conveyor belt, in which the conveyor belt is reversed and meandered with a small radius of curvature. .

(Prior art) In order to enhance the straightness of the belt of the belt conveyor, it is necessary to make the tension of the central portion of the belt greater than that of the peripheral portion. Forming is taking place.

(Problems to be Solved by the Invention) By the way, in a case where the belt of the belt conveyor is to be reversed and meandered with a small radius of curvature, if the belt guide pulley for securing the straightness of the belt is formed in a middle-high shape, the guide pulley is Both ends have to be formed in a very thin shape, and the support rigidity of the guide pulleys supported at both ends is reduced.

As a result, the tension applied to the guide pulley by the conveyor belt cannot be countered, and the predetermined operation cannot be performed by properly guiding the conveyor belt.

The present invention has been made in view of such circumstances, and it is an object of the present invention to ensure the straightness of a conveyor belt and, at the same time, allow the conveyor belt to be inverted with a small radius of curvature. .

(Means for Solving the Problems) In order to achieve this object, the invention described in claim 1 is
Bearings are provided at both ends of the front end edge of a plate-shaped support plate, and bearings are provided at both ends of a guide pulley whose surface is formed into a middle and high shape as a smooth continuous curved surface in the rotation axis direction. Is fitted to the bearing so as to be rotatably supported, and a supporting portion that slides on an outer shape of the guide pulley when a belt is hooked is provided on a leading edge of the support plate between the bearings. A plurality of them are arranged apart from each other in the axial direction.

(Operation) According to the invention as set forth in claim 1, bearings having small diameter support shafts protruding from both ends of a guide pulley formed in a middle and high shape are respectively installed at both ends of a front end edge of a support plate. In addition to the above, the support portion that slides in contact with the outer shape of the guide pulley is arranged between these bearings along the leading edge of the support plate. Since the support portion supports the guide pulley and prevents the guide pulley from bending, the conveyor belt can be inverted with a small radius of curvature, and a smooth operation can be performed while ensuring the straightness of the conveyor belt.

(Example) Next, the present invention will be described with reference to the drawings.
An outline of a transport device S having a belt guide device G according to the present invention will be described with reference to the drawings.

In the transport device S, reference numerals 1 and 2 denote independent belt conveyors, which are installed facing each other from both left and right sides.

These belt conveyors 1 and 2 have conveyor belts 3 and 4 each composed of an endless belt.

The conveyor belt 3 is wound around six drive pulleys 5 arranged in the vertical direction on the right side of FIG. 2, idle pulleys 6a and 6b further disposed on the right and top of these, and a small-diameter pulley 8. I have.

The small-diameter pulley 8 corresponds to a guide pulley constituting the guide device G of the present invention, and is a knife edge 7 (corresponding to a support plate referred to in the present invention of the present application) made of a plate protruding toward the other belt conveyor 2. ).

Each of the driving pulleys 5 is disposed between the knife edges 7 at a position retracted from the tip of the knife edge 7.

The conveyor belt 3 is wound around the outside of the small-diameter pulley 8 and the inside of the drive pulley 5 so as to meander in the vertical direction.

The driving pulleys 5 are driven at the same peripheral speed in the direction shown in FIG. 2 by a driving device (not shown).

The conveyor belt 4 is in the opposite direction to the conveyor belt 3, and is formed in a substantially similar manner by a drive pulley 15, idle pulleys 16a and 16b, a knife edge 17, and a small-diameter pulley 18.

The knife edge 17 and the small-diameter pulley 18 of the conveyor belt 4 also correspond to the support plate or the guide pulley according to the present invention, and constitute the guide device G.

Then, these belt conveyors 1 and 2 insert the tip sides of the knife edges 7 and 17 of the respective conveyor belts 3 and 4 toward the drive pulleys 5 and 15 of the other belt conveyors 1 and 2,
By arranging them interchangeably, the conveyor belts 3, 4
Meanwhile, a meandering transport path R is formed.

In this way, the knife edge 7, 17 of one of the belt conveyors 1, 2 and the drive pulleys 5, 15 of the other belt conveyor 2, 1 of the transport device S configured by arranging the two belt conveyors 1, 2 are provided. A guide roller 22 is provided between the rollers and forms each reversal portion C of the transport path R.

These guide rollers 22 are connected to the respective belt conveyors 1,
2 has four rotation axes parallel to each pulley, knife edge 7,1
The distance from the tip of 7 is set according to the thickness of the noodle belt M which is the object to be conveyed.

Each of the guide rollers 22 is driven by an independent drive motor 24 different from a drive device (not shown) of each of the belt conveyors 1 and 2 so that all of the guide rollers 22 are driven at the same peripheral speed. It has become. In FIG. 2, reference numeral 25 denotes a drive motor controller.

By the way, the guide device G of the transport device S is configured as in the first embodiment shown in FIG. 1 and FIGS. 3 to 6.

That is, the knife edges 7, 17 are made of a steel plate supported between frames (not shown) of the transport device S installed on both sides in a direction perpendicular to the paper surface of FIG. Small diameter pulleys 8 and 18 are installed at the tip of
Since both are similarly configured, the following description will be made using the small-diameter pulley 8.

In FIG. 1, bearings 31 for supporting the spindle 8a of the small-diameter pulley 8 are provided at both ends of the tip edge of the knife edge 7.

The small-diameter pulley 8 rotatably supported by these bearings 31 has an outer shape formed in a substantially middle-high spindle shape. The small-diameter pulley 8 extends along the tip edge of the knife edge 7. It is arranged in a direction perpendicular to the traveling direction of the conveyor belt 3.

A large number of support portions 32, 3 for preventing bending of the small-diameter pulley 8 are provided at the leading edge of the knife edge 7 between the bearings 31.
3 are formed at appropriate intervals, and the conveyor belt 3 is wound over them.

In this embodiment, the first support portion 32 for preventing the deflection of the small-diameter pulley 8 from separating from the distal edge of the knife edge 7 and, conversely, toward the distal edge of the knife edge 7 of the small-diameter pulley 8. And the second support portion 33 for preventing the bending of the second member are arranged in a mixed manner.

As shown in FIGS. 4 and 5, the first support portion 32 is formed by inserting and fixing the tip edge of the knife edge 7 to the open end side of a U-shaped restraining fitting 34. An annular groove 35 is formed on the peripheral surface of the small-diameter pulley 8, and the diameter of the small-diameter pulley 8 remaining at the bottom of the groove is made equal to the plate thickness of the knife edge 7, and the restraining fitting 34 is fitted into the annular groove 35. By matching, the deflection of the small-diameter pulley 8 separating from the knife edge 7 side is prevented.

As shown in FIG. 6, the second support portion 33 is a rib-shaped member extending from the tip edge of the knife edge 7 to the small-diameter pulley 8 side. It is formed to the same thickness, and its tip has an arc-shaped concave surface
An outer peripheral surface of the small-diameter pulley 8 at a position corresponding to the position of the second support portion 33 slides on the concave surface 33a.

In this embodiment, the second support portion 33 is also arranged inside the restraining bracket 34 of the first support portion 32, and comes into sliding contact with the small-diameter pulley 8 as described above. .

In this embodiment, two first support portions 32 are arranged at intervals between the bearings 31 and
A large number of the second support portions 33 are arranged between the first support portion 32 and the first support portion 32.

This is because, as described above, the first support portion 32 is connected to the small-diameter pulley 8.
This is because the direction in which the small diameter pulley 8 is restrained is opposite to the direction in which the second support portion 33 is restricted, so that the bending generated in the small-diameter pulley 8 by both of them cooperating is minimized in both directions.

The guide device G of the first embodiment thus formed can be configured, for example, as a modified example shown in FIG.

In the following description of the modified examples and the embodiments, the description of the contents common to the first embodiment will be omitted, and only the points unique to each example will be described.

1 is different from the embodiment of FIG. 1 in that only one first support portion 32 is formed at the center of the small-diameter roller 8 and a component formed separately from the knife edge 7. 36, a large number of second support portions 33 are collectively formed in advance,
The only difference is that such a part 36 is fixed by means such as welding of the tip edge of the knife edge 7, and the other points are the same.

In this way, a large number of second supports 33 are connected to the knife edge 7.
Forming the knife edge 7 in advance on a separate component 36 has the advantage that the knife edge 7 can be manufactured efficiently.

Next, a second embodiment shown in FIGS. 8 and 9 will be described.

This second embodiment differs from the first embodiment described earlier in that
Only the shape of the second support part 33 is different.

That is, in the second embodiment, the knife edge 7 divided by the bearing 31 and the first support portion 32 is used.
Are formed by arranging a wide second support portion 33 one by one along the leading edge of the second support portion.

Therefore, compared with the case of the first embodiment, the contact area of the second support portion 33 with the surface of the small-diameter pulley 8 is increased, and the frictional force against the rotation of the small-diameter pulley 8 is increased. A groove 33b extending in the axial direction of the small-diameter pulley 8 is formed in the concave surface 33a of the second support portion 33 (FIG. 9) to reduce the contact area between the two.

As shown in FIG. 10, the second support portion 33 of the second embodiment extends to almost the entire distal end portion of the knife edge 8 between the bearing 31 and the first support portion 32. The width dimension can be enlarged, and even in this configuration,
A groove 33b similar to the above may be formed in the concave surface 33a of the second support portion 33.

Next, a third embodiment shown in FIGS. 11 and 12 will be described.

In each of the embodiments described above, the concave surface 33a of the second support portion 33 is in sliding contact with the outer peripheral surface of the small-diameter pulley 8, but in the third embodiment, the annular groove 37 is formed in the outer peripheral surface of the small-diameter pulley 8. And is configured to slide on the bottom of the annular groove 37.

In this embodiment, the second support portion 38 installed corresponding to the central portion of the small-diameter pulley 8 has an upper edge 38.
a is arranged so as to coincide with the maximum height of the small-diameter pulley 8 at the position (see FIG. 12).

Therefore, there is an advantage that the transfer of the conveyed articles such as the noodle band M from the upper surface of the knife edge 7 to the small-diameter pulley 8 is performed smoothly.

 Next, a fourth embodiment shown in FIG. 13 will be described.

In each of the embodiments described above, the first support portion 32 and the second support portion 33 are provided as a support portion in a mixed manner, but in this embodiment, the first support portion 32 and the second support portion 33 are provided.
The installation of those corresponding to the support portions 32 of the
The supporting part is constituted only by the supporting part 33 of FIG.

If the small-diameter pulley 8 is constituted only by the second support portion 33, the function of restraining the bending of the small-diameter pulley 8 in the direction away from the tip edge side of the knife edge 7 is small.
When the fluctuation of the driving torque of the conveyor belt 3 applied to the small diameter pulley 8 is small and the tension acts substantially constant, the direction of the small diameter pulley 8 is separated from the tip edge side of the knife edge 7 by the tension of the conveyor belt 3. Is suppressed, and can be used.

(Effect of the Invention) 4 As described above, according to the first aspect of the present invention, the small-diameter support shafts protruding from both ends of the guide pulley formed in a middle-high shape are respectively provided at the front edge of the support plate. It is supported by bearings installed at both ends separated from each other, and between these bearings, a support portion that slides on the outer shape of the guide pulley is arranged along the leading edge of the support plate. Even if tension is applied, the plurality of support portions spaced apart from each other in the axial direction of the guide pulley support the guide pulley and prevent the guide pulley from bending, so that the conveyor belt is inverted with a small radius of curvature, and the conveyor belt is inverted. A smooth operation can be performed while ensuring the straightness of the belt.

[Brief description of the drawings]

Drawings relate to an embodiment of the present invention, FIG. 1 is a perspective view of a first embodiment of a belt guide device, FIG. 2 is an overall explanatory view of a conveying device, FIG. 3 is a cross-sectional view taken along the line III-III of FIG. 4 is a cross-sectional view taken along the line IV-IV of FIG. 1, FIG. 5 is a cross-sectional view taken along the arrow V of FIG. 1, FIG. 6 is a cross-sectional view taken along the line VI-VI of FIG. FIG. 8 is a perspective view of a second embodiment of the belt guide device, FIG. 9 is an explanatory view of a concave surface of a second support portion, and FIG.
FIG. 11 is a perspective view of a modification of the embodiment, FIG. 11 is a perspective view of a third embodiment of the belt guide device, FIG. 12 is a cross-sectional view taken along the line XII-XII of FIG.
FIG. 13 is a perspective view of a fourth embodiment of the belt guide device. G; guide device, 1,2; belt conveyor, 3,4; belt (conveyor belt) 7; support plate (knife edge), 8; guide pulley (small diameter pulley), 8a; support shaft, 31; bearing, 32 1st support part, 33; 2nd support part, 33a; concave surface, 34; restraint fitting, 35, 37; annular groove, 37a;

Claims (4)

(57) [Claims] The present invention is characterized in that bearings are provided at both ends of a distal end portion of a plate-shaped support plate and spaced apart from each other at both ends of a guide pulley which is formed in a middle and high shape as a smooth continuous curved surface in a rotation axis direction. The supporting shaft portion provided is rotatably supported by being fitted to the bearing, and a supporting portion which slides on the outer edge of the guide pulley when a belt is hung on the leading edge of the supporting plate between these bearings. A plurality of belt guides are arranged apart from each other in the axial direction of the guide pulley. 2. A belt guide device for a belt conveyor according to claim 1, wherein an annular groove is formed on the surface of said guide pulley, and a U-shaped restraining fitting is fitted into said annular groove. A belt guide device for a belt conveyor, wherein a support portion is formed by attaching an open end of a metal fitting to the support plate. 3. A belt guide device for a belt conveyor according to claim 1, wherein an annular groove is formed on the surface of said guide pulley, and said annular groove has an arc-shaped concave surface which is in sliding contact with the groove bottom surface. A belt guide device for a belt conveyor, wherein a portion is disposed. 4. A belt guide device for a belt conveyor according to claim 2, wherein said bearing and said support portion constituted by said restraining bracket are arranged separately from each other, and a surface of a guide pulley is provided between said bearing and said support portion. A belt guide device for a belt conveyor, comprising a support portion having an arc-shaped concave surface that slides on the support portion.