JP5760229B2 - Conveyor - Google Patents

Description

  The present invention relates to a conveyor, and more particularly to a conveyor having an endless belt or wire.

Conveyors are widely used for conveying goods. Conveyors include those using a flat belt as a conveyor belt, those using a round belt, and those using a chain. A conventional conveyor using a round belt as the conveying belt will be described with reference to FIG.
As shown in FIG. 5, the conveyor has two frames 911 and 912 that are spaced apart from each other and both extend in the X-axis direction, and axial axes at both ends of the two frames 911 and 912. Includes shafts 930 and 931 provided so as to be in the Y-axis direction. Pulleys 914 and 915 are rotatably attached to the shafts 930 and 931 on the frame 911 side, and pulleys 916 and 917 are attached to the frame 912 side, respectively.

  A conveyor belt 918 is stretched between the pulley 914 and the pulley 915 so as to form a loop therebetween, and between the pulley 916 and the pulley 917, the conveyor belt 918 also forms a loop therebetween. A belt 919 is stretched. The belts 918 and 919 are endless in terms of ease of maintenance and cost reduction.

  Further, the shaft 930 extends beyond the frame 912 to the front side in the Y-axis direction from the portion where the pulley 916 is attached, and the pulley 932 is attached to the tip portion thereof. On the other hand, a motor 923 and a gear head 924 coupled to the motor 923 and the gear head 924 connected to the motor 923 are mounted in a lower part of the two frames 911 and 912, and the rotation shaft extends forward in the Y-axis direction. . A motor pulley 925 is attached to the tip of the rotating shaft, and a drive belt 933 is stretched between the pulley 932 and the pulley 925.

  In the conveyor according to the prior art, the rotational driving force of the motor 923 is transmitted to the shaft 930 via the driving belt 933, and thereby the conveying belts 918 and 919 are driven.

JP 2000-296913 A

  However, in the conveyor according to the prior art, the pulleys 914 and 916 are pivotally supported by one shaft 930 and the pulleys 915 and 917 are pivotally supported by the same shaft 931. Therefore, the pulleys 914 to 917 are stretched. In order to replace the belts 918 and 919, it is necessary to perform disassembly work such as removing one of the two frames 911 and 912. Therefore, the production line must be stopped for a long time in order to replace the belts 918 and 919, and improvement is desired from the viewpoint of improving production efficiency.

Further, as shown in FIG. 5, in the conveyor according to the prior art, pulleys 932 and 925 for stretching the drive belt 933 are arranged on the outer side on the front side in the Y-axis direction than the frame 912. Improvement is demanded from the viewpoint of space saving on the production line.
The present invention has been made to solve the above problems, and an object of the present invention is to provide a conveyor that does not require useless space around the belt and that does not require complicated work for belt replacement.

  In order to achieve the above object, a conveyor according to the present invention is attached to both end portions in the extending direction with respect to two frames arranged side by side and one frame of the two frames. First and second pulleys whose shaft cores are arranged in a direction orthogonal to the extending direction of the frame, a driving source that generates a rotational driving force that is arranged below the two frames, and 2 together with the driving source. A plurality of pulleys including a first pulley, a second pulley, and a third pulley having a circular cross section or an elliptic cross section; And a linear body stretched in a loop shape. And in the conveyor which concerns on this invention, the part stretched between the 1st pulley and 2nd pulley in a linear body is a conveyance part, and the several pulley which concerns on the tension | pulling of a linear body respectively It is supported in a cantilever state.

  In the conveyor according to the present invention, one endless linear body is provided in a plurality of pulleys including first and second pulleys attached to both end portions of the frame and a third pulley attached to the drive source. It is stretched. That is, in the conveyor according to the present invention, a linear body that places and conveys an object to be conveyed and a linear body that transmits a rotational driving force from a drive source are configured in a row. Therefore, as compared with the case where a linear body for conveyance (belts 918 and 919) and a linear body for transmission of rotational driving force (belt 933) are separately provided as in the conventional conveyor shown in FIG. The structure can be simplified and the cost can be reduced. In addition, the number of types of linear bodies stocked as replacement parts can be reduced to one, which is advantageous from the viewpoint of management.

In the conveyor according to the present invention, the drive source and the third pulley are both arranged at the lower part of the two frames, and the linear body is hung on the third pulley. The linear body and pulleys do not overhang outside. Therefore, it is excellent from the viewpoint of space saving in the production line.
Further, in the conveyor according to the present invention, since the plurality of pulleys related to the stretching of the linear body are each pivotally supported in a cantilever state, the frame and other components are removed when replacing the linear body. It is not necessary to perform complicated work such as. In other words, when replacing the linear body, it is possible only by a simple operation of removing the linear body from the side that is not pivotally supported with respect to a plurality of pulleys (the side that is not pivotally supported in each pulley). In addition, when attaching the linear body, the work may be performed in the reverse procedure. Therefore, in the conveyor according to the present invention, it is not necessary to remove parts such as a frame when exchanging the linear body, the production line stop time can be shortened, and the operation can be simplified. .

As described above, the conveyor according to the present invention does not require useless space around the belt and does not require a complicated operation for belt replacement.
In the conveyor according to the present invention, the following variations can be adopted as an example.
In the conveyor which concerns on this invention, the structure that the direction of the axial support in a some pulley is arrange | positioned in the one side of the loop in a linear body in the said structure is employable. In this way, it is possible to further eliminate the complexity of work in replacing the linear body.

  In the conveyor according to the present invention, in the configuration described above, each of the shaft cores extends at both end portions in the extending direction of the two frames out of the two frames (the other frame). Fourth and fifth pulleys arranged in a direction orthogonal to the installation direction are attached, and in a loop with respect to a plurality of pulleys including the third pulley and the fourth and fifth pulleys, An endless linear body different from the linear body stretched around a plurality of pulleys including the first, second, and third pulleys is stretched. Then, the linear body stretched to a plurality of pulleys including the first to third pulleys is defined as a first linear body, and the plurality of pulleys including the third to fifth pulleys are stretched. When the installed linear body is the second linear body, the plurality of pulleys related to the stretching of the second linear body are also pivoted at one end in a state where all the pulleys are aligned on one side of the loop. The first linear body and the second linear body can adopt a configuration in which the loops are not interlaced.

In the case of adopting the above configuration, at least the first linear body and the second linear body are provided as the transport linear bodies between the two frames. Since the two linear bodies do not cross each other, each exchange can be performed with the same simple operation as described above.
Further, in the conveyor according to the present invention, the connection frame is joined to the two frames, and the connection frame does not intersect with the loops of the first linear body and the second linear body. Can be adopted.

In the case of adopting such a configuration, the connecting frame does not intersect with any of the loops of the first and second linear bodies, so that the connecting frame is removed when replacing the first and second linear bodies. This is more advantageous from the viewpoint of work efficiency.
In the conveyor according to the present invention, at least one of the plurality of pulleys on which the first linear body is hung and at least one of the plurality of pulleys on which the second linear body is hung. A configuration in which the shaft cores of one pulley are both arranged obliquely with respect to the direction orthogonal to the extending direction of the two frames can be employed. The first and second linear bodies are stretched so as to form a three-dimensional loop by passing through at least one pulley having an axial core arranged in an oblique direction in this manner. It is effective to do. And thereby, the malfunction that the 1st and 2nd linear body remove | deviates from a pulley during the drive of a conveyor does not arise.

  In the conveyor according to the present invention, the use of a belt or wire having a circular cross section or an elliptic cross section as the linear body can increase the degree of freedom in designing the arrangement of the plurality of pulleys and the respective directions. It is advantageous from the viewpoint of.

It is a model perspective view which shows the external appearance of the conveyor 1 which concerns on embodiment. FIG. 2 is a schematic configuration diagram illustrating a main part related to driving of belts 18 and 19 in the conveyor 1. (A), (b) is a schematic perspective view which shows the removal process of the belt 18 in order. It is a model perspective view which shows the state which completed removal of the belt. It is a model perspective view which shows schematic structure of the conveyor which concerns on a prior art.

Hereinafter, an embodiment for carrying out the present invention will be described with reference to the drawings.
The embodiment according to the following description is used as an example for easily explaining the structural features of the present invention and the effects obtained from the characteristic configuration. Therefore, the present invention is not limited to the following modes except for essential features.

[Embodiment]
1. Schematic Configuration of Conveyor 1 A schematic configuration of the conveyor 1 according to the embodiment will be described with reference to FIG.
As shown in FIG. 1, the conveyor 1 includes two frames 11 and 12 that both extend in the X-axis direction, and the two frames 11 and 12 are joined by a connecting frame 13. A pulley 14 and a pulley 15 are pivotally supported at both ends in the X-axis direction of the frame 11 on the front side in the Y-axis direction. The shaft cores of the pulleys 14 and 15 are provided in the Y-axis direction.

Similarly, a pulley 16 and a pulley 17 are pivotally supported at both ends in the X-axis direction of the frame 12 on the back side in the Y-axis direction. The shaft cores of the pulleys 16 and 17 are also provided in the Y-axis direction.
Further, guide plates 20 and 21 are attached to the frames 11 and 12 in regions between the pulley 14 and the pulley 15 and between the pulley 16 and the pulley 17, respectively. A plurality of pulleys including a pulley 14 and a pulley 15 (partially omitted in illustration) are provided with a belt 18, and a plurality of pulleys including a pulley 16 and a pulley 17 (partially omitted in illustration) are provided. The belt 19 is stretched. The workpieces 501 and 502 to be conveyed by the conveyor 1 are placed on the belt 18 and the belt 19 and transferred to the left in the X-axis direction (in the direction of the arrow).

The pulleys 14 and 15 are pivotally supported by attaching their shaft cores to bearings (not shown) inserted in the grooves 11a. The pulleys 16 and 17 are supported in the grooves 12a. The shaft is supported by being attached to the inserted bearing (not shown).
A drive box 22 for storing a drive source is provided below the frames 11 and 12. The drive box 22 is arranged so as to fit in a region between the frame 11 and the frame 12 when the conveyor 1 is viewed from above or below in the Z-axis direction. The drive box 22 is provided below the pulleys 14 to 17 that are pivotally supported by the frames 11 and 12 in the Z-axis direction.

2. The principal part which concerns on the drive of the belts 18 and 19 in the conveyor 1 The principal part which concerns on the drive of the belts 18 and 19 in the conveyor 1 is demonstrated using FIG. In FIG. 2, only the main part related to driving of the belts 18 and 19 is extracted from the configuration of the conveyor 1 and schematically shown.
As shown in FIG. 2, a gear head 24 is combined with the motor 23, and a motor pulley 25 is attached to the tip of a rotating shaft that extends from the gear head 24. The motor pulley 25 has two grooves 25a and 25b spaced apart from each other in the circumferential direction, and belts 18 and 19 are hung on the grooves, respectively. The motor pulley 25 is pivotally supported in a cantilevered state with respect to the gear head 24, and the direction of the arrow A is released.

The belt 18 is looped around the pulleys 14, 15, 26, and 27 including the motor pulley 25 and has a loop shape. The pulleys 14, 15, 26, and 27 are also pivotally supported in a cantilever state, and the directions of arrows B, C, D, and E are released. Then, one side of the loop of the belt 19 is released.
On the other hand, the belt 19 has a loop shape that is hung on the pulleys 16, 17, 28, and 29 including the motor pulley 25. The pulleys 16, 17, 28, and 29 are also pivotally supported in a cantilever state, and one side of the loop is released.

Here, about the pulley 27 and the pulley 28, the axial center is diagonally with respect to the Y-axis. Thereby, the change in the extending direction of the belts 18 and 19 becomes smooth, and the situation where the belts 18 and 19 are detached during driving can be prevented.
In the conveyor 1 according to the present embodiment, the belt 18 and the belt 19 are driven in the direction of the arrow by the rotation drive of the motor 23 in a state where the belt 18 and the belt 19 are synchronized.

As described above, the belt 18 and the belt 19 together form an endless loop, and the pulleys 14, 15, 25, 26, and 27 are pivotally supported in a direction aligned on one side with respect to the loop. The other side of the loop is released. Further, the loop formed by the belt 18 and the loop formed by the belt 19 are not crossed with each other.
3. Replacement Procedure of Belts 18 and 19 The replacement procedure of the belts 18 and 19 will be described with reference to FIGS. 3 and 4 by taking the replacement of the belt 18 as an example.

As shown in FIG. 3A, when replacing the belt 18, the belt 18 is first removed from the groove 25a of the motor pulley 25 on the loop release side (in the direction of arrow F). The removal of the belt 18 from the motor pulley 25 can be performed by a simple operation by using the elastic force of the belt 18.
Next, as shown in FIG. 3B, the belt 18 is removed from the pulleys 26 and 27 to the loop release side (in the directions of arrows G and H).

Finally, as shown in FIG. 4, removal of the belt 18 is completed by removing the belt 18 from the pulleys 14 and 15 to the loop release side (in the directions of arrows I and J).
The belt 18 can be easily attached by performing the work in the reverse order of the procedure shown in FIGS.
The belt 19 can also be replaced in the same procedure as described above.

4). Superiority In the conveyor 1 according to the present embodiment, pulleys 14, 15, 16, and 17 attached to both ends of the frames 11 and 12, and a motor pulley attached to a motor 23 that is a driving source via a gear head 24. 25, belts 18 and 19 are stretched around a plurality of pulleys. The belts 18 and 19 are so-called round belts having a circular cross section, and are respectively hung on the pulleys 14, 15, 26, and 27 and the motor pulley 25 or the pulleys 16, 17, 28, and 29 and the motor pulley 25, respectively. Constitutes a loop.

  In the conveyor 1 according to the present embodiment, the belts 18 and 19 that place and convey the workpieces 501 and 502 to be conveyed function as drive belts that transmit the rotational driving force from the motor 23 that is a driving source. Also has. Therefore, as compared with the case where the conveyor belts 918 and 919 and the drive belt 933 are separately provided as in the conventional conveyor shown in FIG. 5, the structure can be simplified and the cost can be reduced. Can be planned. In addition, the number of types of linear bodies stocked as replacement parts can be reduced to one, which is advantageous from the viewpoint of management.

Further, in the conveyor 1, the drive box 22 is arranged at the lower part between the two frames 11 and 12, and components such as pulleys may protrude outside the both frames 11 and 12 in the Y axis direction. Absent. Therefore, it is excellent from the viewpoint of space saving in the production line.
Moreover, in the conveyor 1 which concerns on this Embodiment, the some pulley 14,15,16,17,25,26,27,28,29 which concerns on tension | tensile_strength of the belts 18 and 19 is a shaft in a cantilever state, respectively. In addition to being supported, the direction of the shaft support is aligned on one side of the loop formed by the belts 18 and 19. For this reason, in the conveyor 1 which concerns on this Embodiment, in exchange of the belts 18 and 19, it is not necessary to perform complicated work, such as removing a flame | frame and another component. That is, when the belts 18 and 19 are to be replaced, as shown in FIGS. 3 and 4, a simple operation of removing the belts 18 and 19 from the open side of the loop formed by the belts 18 and 19, respectively. In addition, when the belts 18 and 19 are attached, the work may be performed in the reverse procedure. Therefore, in the conveyor 1, it is not necessary to remove the parts such as the frames 11 and 12 when exchanging the belts 18 and 19, the production line stop time can be shortened, and the operation can be simplified. it can.

As described above, the conveyor 1 according to the present embodiment does not require useless space around the conveyor and does not require complicated work for replacing the belts 18 and 19.
[Other matters]
In the above embodiment, a round belt having a circular cross section is employed as an example of a linear body related to the conveyance of the workpieces 501 and 502, but the present invention is not limited to this. For example, a stranded wire can be used. Further, the cross-sectional shape is not necessarily circular, and may be, for example, elliptical or other. However, in the case of handling a linear body as shown in FIG. 2, it is desirable from the viewpoint that the distortion of the linear body is less as close to a circular cross section as possible.

In the conveyor 1 according to the above-described embodiment, the workpieces 501 and 502 are transported by the two belts 18 and 19, but the linear body for transporting the workpieces 501 and 502 is one. Alternatively, it may be three or more. Changes can be made as appropriate in relation to the weight of the workpieces 501 and 502, the torque from the motor 23, and the like.
Moreover, about the installation number of the pulley for extending | stretching one belt, there is no limitation at all in the structure of the conveyor 1 which concerns on the said embodiment. It is only necessary to include at least two pulleys arranged at both ends of the conveyance path and pulleys attached to the drive source in the configuration.

  The present invention is useful for realizing a conveyor that does not require complicated work for belt replacement and can contribute to improvement in production efficiency.

1. Conveyor 11,12. Frame 13. Connecting frame 14-17, 26-29. Pulley 18,19. Belt 20, 21. Guide plate 22. Drive box 23. Motor 24. Gear head 25. Motor pulleys 501, 502. work

Claims (4)

Two parallel frames,
First and second pulleys attached to both end portions in the extending direction with respect to one frame of the two frames, each axis being arranged in a direction orthogonal to the extending direction;
A driving source disposed at a lower portion between the two frames and generating a rotational driving force;
A third pulley disposed together with the drive source at a lower portion between the two frames and attached to a rotation shaft of the drive source;
Endless first linear shape having a circular cross section or an elliptical cross section and stretched to form a first loop with respect to a plurality of pulleys including the first, second and third pulleys Body,
Fourth and fifth pulleys attached to both end portions in the extending direction with respect to the other frame of the two frames, each axis being arranged in a direction perpendicular to the extending direction;
A sixth pulley formed integrally with the third pulley in a state of being aligned with the third pulley in the extending direction with respect to the rotation shaft of the drive source;
An endless second linear shape having a circular cross section or an elliptic cross section and stretched so as to form a second loop with respect to a plurality of pulleys including the fourth, fifth and sixth pulleys Body,
A portion stretched between the first pulley and the second pulley in the first linear body, and the fourth pulley and the fifth pulley in the second linear body; The part stretched between the two is the transport part,
The rotating shaft of the drive source has a free end at the front end, and a support member is not attached to the front end side of at least the portion to which the third pulley and the sixth pulley are attached,
Among the plurality of pulleys related to the stretching of the first linear body, all the pulleys except the third pulley are each pivotally supported in a cantilever state, and the base of each pivotal support When the direction from the side toward the tip side is assumed to be a virtual surface formed inside the first loop, the direction is aligned on one side of the two directions facing the front and back with respect to the virtual surface. And
Of the plurality of pulleys related to the stretching of the second linear body, all the pulleys except the sixth pulley are each pivotally supported in a cantilever state, and the base of each pivotal support When the direction from the side toward the front end side is assumed to be a virtual surface formed inside the second loop, the direction is aligned on one side of the two directions facing the front and back with respect to the virtual surface. And
The direction from the root side to the tip side of the rotating shaft of the drive source is aligned to match both the one side of the first loop and the one side of the second loop,
The conveyor according to claim 1, wherein the first loop of the first linear body and the second loop of the second linear body are not crossed with each other. A connecting frame that connects the two frames is joined to the two frames.
The conveyor according to claim 1 , wherein the connection frame does not intersect with any loop of the first and second linear bodies. At least one pulley of the plurality of pulleys on which the first linear body is hung and at least one pulley of the plurality of pulleys on which the second linear body is hung are both The conveyor according to claim 1 or 2, wherein the shaft core is disposed obliquely with respect to a direction orthogonal to the extending direction of the two frames. The conveyor according to any one of claims 1 to 3 , wherein the linear body is a belt or a wire.

Images