JP2012193036A - Roller conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roller conveyor that enables a speed control roller to be freely attached/detached and disposed.SOLUTION: The roller conveyor 9 includes a main frame 5 that detachably supports a plurality of transfer rollers 3 for receiving a load 1, and a drive belt 7 that travels by a drive source. The plurality of transfer rollers 3 are frictionally driven by the drive belt 7. In addition, the roller conveyor 9 also includes the plurality of speed control rollers 23 that receive the load 1, a variable speed means 27 for transmitting a turning force of an input roller 25, which is frictionally driven by the drive belt 7, to the speed control rollers 23, and a sub-frame 29 that supports the variable speed means 27 and that is detachably attached to the main frame 5.

Description

  The present invention relates to a roller conveyor that can adjust the conveyance speed in the middle of conveying a load.

  Patent Document 1 discloses a roller conveyor that rotates a plurality of transfer rollers that receive a load by a driving device. The above drive device wraps a drive belt around a pulley that is rotated by a drive source, and frictionally drives a plurality of transfer rollers with this drive belt.

  FIG. 8A shows that the two loads 101 and 103 are conveyed in the direction of the arrow T in accordance with the rotation of the transfer roller 107 and the speed control roller 109 of the roller conveyor 105. The speed control roller 109 has a higher rotation speed than the transfer roller 107, and the load 101 is accelerated by the speed control roller 109 before the subsequent load 103. As a result, for example, as shown in FIG. 5B, the interval between the stoppers 111 for positioning the load 103 on the roller conveyor 105 can be secured between the loads 101 and 103. Alternatively, when the travel or delay of the load 101 is determined based on the length of time that the load 101 blocks the photoelectric switch beam that traverses the travel of the load 101, the load 101, 103 is prevented from being mistaken as a single load. it can.

  However, the necessity, the number, or the arrangement of the speed control roller 109 largely depends on the specification of the roller conveyor 105 or the purpose of its use. Therefore, it is not possible to provide the speed control roller 109 uniformly on every roller conveyor. It is impossible to change the specifications every time the roller conveyor 105 is manufactured. In addition, the procedure for providing the speed control roller 109 on the existing roller conveyor is diversified, and the time and labor required for the work increase. For this reason, the manufacturing cost or equipment cost of a roller conveyor rises unnecessarily.

Japanese Utility Model Publication 63-200528 Japanese Patent Laid-Open No. 11-246016 Japanese Utility Model Publication No. 63-63316

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a roller conveyor capable of freely attaching and detaching and arranging a speed control roller.

  The present invention includes a plurality of transfer rollers that receive a load in parallel with each other, a main frame that detachably supports the plurality of transfer rollers, and a drive belt that travels in a direction intersecting the parallel direction of the plurality of transfer rollers, A roller conveyor that frictionally drives the plurality of transfer rollers with the driving belt, and a plurality of speed control rollers that receive the load in parallel with each other, and an input roller that is in rolling contact with the driving belt and is generated on the input roller And a sub-frame that supports the speed change means and is detachably attached to the main frame.

  Further, according to the present invention, the speed change unit is joined to the input roller with an axial center coincident with the speed increasing pulley having a larger diameter than the input roller, and is wound around the speed increasing pulley and the speed control roller And a speed increasing belt for transmitting the rotational force.

  Further, the present invention is characterized in that the speed change means joins the speed control roller to the input roller so that the shaft centers thereof coincide with each other, and the diameter of the speed control roller is relatively larger than that of the input roller. To do.

  According to the roller conveyor of the present invention, the operation of selecting a plurality of adjacent transfer rollers from all the transfer rollers detachably supported by the main frame, and replacing these transfer rollers with speed control rollers. Easy. That is, a plurality of adjacent transfer rollers are removed from the main frame, and a sub-frame is attached to the space. When this operation is finished, the input roller of the transmission means supported by the subframe comes into contact with the drive belt. The drive belt frictionally drives the input roller and generates a rotational force on the input roller. The speed change means accelerates or decelerates the rotation of the input roller and transmits it to the speed control roller.

  Regardless of the number or arrangement of the above-mentioned speed control rollers, the structure for running the main frame and the drive belt need not be changed. For this reason, the roller conveyor which concerns on this invention can hold down the manufacturing cost or equipment cost at low cost.

  Further, according to the roller conveyor of the present invention, the speed increasing pulley having a diameter larger than that of the input roller is joined to the input roller so that the shaft center coincides, and the speed increasing belt is wound around the speed increasing pulley. The rotational force of the input roller can be transmitted to the speed control roller. Thereby, the roller conveyor which concerns on this invention can increase the rotation speed of a speed control roller rather than a transfer roller.

  Moreover, according to the roller conveyor which concerns on this invention, the diameter of the speed control roller joined by making the shaft center correspond with an input roller is made relatively larger than an input roller. Thereby, the roller conveyor which concerns on this invention can increase the circumferential speed which a speed control roller rotates rather than a transfer roller. Moreover, the roller conveyor according to the present invention has an advantage that the number of parts is small.

Sectional drawing of the principal part of the roller conveyor which concerns on this invention. The top view of the principal part of Example 1 of the roller conveyor which concerns on this invention. Sectional drawing which fractured | ruptured the principal part of Example 1 of the roller conveyor which concerns on this invention by the AA line of FIG. Sectional drawing which fractured | ruptured the principal part of Example 1 of the roller conveyor which concerns on this invention by the BB line of FIG. The top view of the principal part of Example 2 of the roller conveyor which concerns on this invention. The schematic of the cross section which fractured | ruptured the principal part of Example 2 of the roller conveyor which concerns on this invention by CC line of FIG. (A) is sectional drawing which fractured | ruptured the principal part of Example 2 of the roller conveyor based on this invention by the DD line of FIG. 5, (b) is sectional drawing fractured | ruptured by the EE line. (A) is schematic which shows an example of operation | movement of the roller conveyor of a prior art example, (b) is schematic which shows another example.

  FIG. 1 shows a plurality of transfer rollers 3 that are parallel to each other and receive a load 1, a main frame 5 that detachably supports the plurality of transfer rollers 3, and the direction of an arrow S that intersects the parallel direction of the plurality of transfer rollers 3. The roller conveyor 9 provided with the drive belt 7 which runs is shown. The individual transfer rollers 3 are frictionally driven by the drive belt 7, and the load 1 is conveyed in the direction of the arrow T as these transfer rollers 3 rotate.

  The roller conveyor 9 selects a plurality of adjacent transfer rollers 3 from all the transfer rollers 3 supported by the main frame 5, and these transfer rollers 3 are replaced with speed control rollers described in the following embodiments. It is done. Elements added in the embodiment to the roller conveyor 9 shown in FIG. 1 are given dots in FIGS.

  As shown in FIGS. 1 and 2, the transfer roller 3 projects pins 11 from both ends thereof. The main frame 5 is formed by forming a plurality of bearing holes 13 into which the pins 11 are inserted into a pair of groove steels extending in the horizontal direction, and connecting these groove steels with a connecting member 15. One channel steel of the main frame 5 is shown in the figure. If the pins 11 can be removed from the transfer roller 3, the transfer roller 3 can be easily attached to and detached from the main frame 5.

  The drive belt 7 is an endless flat belt and is wound around a pulley that is rotated by a drive source such as an electric motor. A plurality of guide rollers 17 that guide the drive belt 7 in the horizontal direction are provided inside the main frame 5. The guide roller 17 can freely rotate around a sleeve 21 fixed to the main frame 5 by a plurality of bolts 19.

  When it is necessary to accelerate the load 1 in the section where the load 1 is conveyed to the seven transfer rollers 3 shown in FIG. 1, the transfer roller 3 is replaced with the speed control roller 23 shown in FIGS. It is done. 2 to 4 show a plurality of speed change means 27 in which the input roller 25 is brought into contact with the drive belt 7 and a sub-frame 29 that supports the speed change means 27 and is detachably attached to the main frame 5. Yes.

  The speed control roller 23 is formed by forming a belt groove 31 at the end of a roller similar to the transfer roller 3. The speed change means 27 includes an input roller 25, a speed increasing pulley 35 that is joined to the input roller 25 so that the shaft centers thereof coincide with each other, and forms two belt grooves 33, and each belt of the transfer roller 3 and the speed increasing pulley 35. Two speed increasing belts 37 wound around the grooves 31 and 33 are provided.

  The input roller 25 can freely rotate using a bolt 39 fixed to the subframe 29 as a support shaft. The subframe 29 is angle steel extending in the horizontal direction. The bolt 39 may be anything that can cantilever the input roller 25. The speed increasing pulley 35 has a diameter larger than that of the speed control roller 23 and larger than that of the input roller 25.

  Next, a procedure for replacing the six adjacent transfer rollers 3 among the seven transfer rollers 3 shown in FIG. The drawings refer to FIGS. 2 to 4 unless otherwise specified.

  The five transfer rollers 3 are removed from the main frame 5 to secure a space for the sub frame 29 to enter the main frame 5. Then, the sub frame 29 is attached to the main frame 5 by tightening the bolt 19 of the guide roller 17 to the sub frame 29. At this stage, the input roller 25 supported by the sub-frame 29 comes into contact with the drive belt 7 with a force enough to bend the drive belt 7 downward as shown in FIG.

  Subsequently, two speed-up belts 37 are wound around the two belt grooves 33 of one speed-up pulley 35. The same operation is performed for the other two speed increasing pulleys 35. In this operation, the drive belt 7 is pulled downward from the input roller 25 shown in FIG. 4, and the speed increasing belt 37 is moved toward the speed increasing pulley 35 from the end of the input roller 25 opposite to the subframe 29. And the drive belt 7.

  The speed control roller 23 is placed inside the main frame 5, and the speed increasing belt 37 is wound around the speed control roller 23. As shown in FIG. 3, this operation is performed by two speedups already wound around the speed increasing pulley 35 in the belt grooves 31 of the two speed control rollers 23 arranged at an equal distance from the speed increasing pulley 35. This can be done by winding the belts 37 respectively. The same operation is performed for the other four speed control rollers 23. The speed control roller 23 is attached to the main frame 5 by fitting the pin 11 of the speed control roller 23 into the bearing hole 13 of the main frame 5.

  According to the roller conveyor 9 described above, the input roller 25 of the speed change means 27 supported by the sub-frame 29 is frictionally driven by the drive belt 7, and a rotational force is generated in the input roller 25. Further, since the rotation of the input roller 25 is accelerated by the speed change means 27 and transmitted to the speed control roller 23, the load 1 received by the transfer roller 3 and conveyed in the direction of the arrow T is transferred from the transfer roller 3 to the speed control roller. At the time of transfer to 23, acceleration is performed according to the rotation of the speed control roller 23 faster than the transfer roller 3.

  Regardless of the necessity of the speed control roller 23, the number of the speed control rollers 23, or the arrangement thereof, the structure of the main frame 5, the arrangement of the guide rollers 17, and the structure for attaching the drive belt 7 to the main frame 5 are changed. Since it is not necessary, the roller conveyor 9 can reduce the cost required for its manufacture or installation at a low cost. Further, the number of transfer rollers 3 removed from the main frame 5 in the above operation, the number of input rollers 25 supported by one subframe 29, and the number of speed control rollers 23 attached to the main frame 5 are limited. It is not a thing.

  When it is necessary to accelerate the load 1 in the section where the load 1 is conveyed to the seven transfer rollers 3 shown in FIG. 1, the transfer roller 3 is replaced with the speed control roller 41 shown in FIGS. It is done. 5 to 7, a plurality of transmission means 45 in which the input roller 43 is brought into contact with the drive belt 7, subframes 47 and 49 that support these transmission means 45 and are detachably attached to the main frame 5, A plurality of guide rollers 51 appear.

  The pins 11 protrude from the end portions of the speed control roller 41 and the input roller 43. The speed change means 45 joins the speed control roller 41 to the input roller 43 so that the shaft centers thereof coincide with each other, and the diameter of the speed control roller 41 is relatively larger than that of the input roller 43. For example, when the diameter of the speed control roller 41 is larger than that of the transfer roller 3, the diameter of the input roller 43 may be equal to that of the transfer roller 3. When the diameter of the speed control roller 41 is equal to that of the transfer roller 3, the diameter of the input roller 43 may be made smaller than that of the transfer roller 3. Further, the speed change means 45 has an advantage that the number of parts is smaller than that of the speed change means 27 including the speed increasing pulley 35 and the two speed increasing belts 37 described above.

  The sub frames 47 and 49 are two channel steels extending in the horizontal direction, and a plurality of bearing holes 53 into which the pins 11 are inserted are formed at positions facing each other inside the main frame 5. The guide roller 51 can freely rotate using a bolt 55 fixed to the subframe 47 as a support shaft. The bolt 55 may be anything that can cantilever the guide roller 51.

  Next, a procedure for replacing the six adjacent transfer rollers 3 among the seven transfer rollers 3 shown in FIG. The drawings refer to FIGS. 5 to 7A and 7B unless otherwise specified.

  The five transfer rollers 3 and the four guide rollers 17 shown in FIG. 1 are removed from the main frame 5 to secure a space for the sub frames 47 and 49 to enter inside the main frame 5. The sub frames 47 and 49 are attached to the main frame 5 by tightening bolts 57 and 59 passing through the sub frames 47 and 49 to the main frame 5.

  Subsequently, the speed control roller 41 and the input roller 43 are spanned between the sub frames 47 and 49, and the respective pins 11 of the speed control roller 41 and the input roller 43 are inserted into the bearing holes 53 of the sub frames 47 and 49. To do. Thereby, the speed control roller 41 and the input roller 43 are attached to the sub frames 47 and 49. Bearing holes of the subframes 47 and 49 attached to the main frame 5 corresponding to the larger diameter of the speed control roller 41 than that of the transfer roller 3 so that the speed control roller 41 can support the load 1 at the same height as the transfer roller 3. 53 is preferably lower than the bearing hole 13 of the main frame 5.

  Further, when the attachment of the sub-frames 47 and 49 is completed, the guide roller 51 supported by the sub-frame 47 comes into contact with the drive belt 7 from above. By the following procedure, the drive belt 7 is moved to the upper side of the guide roller 51 as shown in FIG. That is, the drive belt 7 is pulled out from the end of the guide roller 51 on the side opposite to the subframe 47, and the drive belt 7 is brought into contact with the guide roller 51 from above. At this stage, the input roller 43 contacts the drive belt 7 with such a force that the drive belt 7 bends downward. Reference numeral 7 'denotes a drive belt that is turned in the opposite direction of traveling around a pulley or the like.

  According to the roller conveyor 9 described above, the input roller 43 of the speed change means 45 supported by the sub frames 47 and 49 is frictionally driven by the drive belt 7, and a rotational force is generated in the input roller 43. Although the rotation speeds of the input roller 43 and the speed control roller 41 coincide with each other, the speed of the speed control roller 41 is higher than that of the input roller 43 because the diameter of the speed control roller 41 is larger than that of the input roller 43. For this reason, the load 1 received by the transfer roller 3 and conveyed in the direction of the arrow T is transferred to the speed control roller 41 from the transfer roller 3. It is accelerated according to.

  Further, the structure of the main frame 5 and the structure for attaching the drive belt 7 to the main frame 5 do not need to be changed regardless of whether the speed control roller 41 is necessary, the number of the speed control rollers 41, or the arrangement thereof. The conveyor 9 can reduce the cost required for its manufacture or installation at a low cost. In addition, the number of transfer rollers 3 removed from the main frame 5 in the above operation, the number of input rollers 43 supported by one subframe 47, 49, and the number of speed control rollers 41 attached to the main frame 5 are limited. Is not to be done.

  It should be noted that the present invention can be carried out in a mode in which various improvements, modifications, or variations are added based on the knowledge of those skilled in the art without departing from the spirit of the present invention. The total number of transfer rollers 3 included in the roller conveyor 9 is not limited. Moreover, although the example in which the speed change means 27 and 45 make the speed of rotation of the speed control rollers 23 and 41 faster than the transfer roller 3 has been described, the speed change means 27 and 45 reduce the speed of rotation of the speed control rollers 23 and 41. A reduction gear may be used. For example, the speed increasing pulley 35 may have a smaller diameter than the input roller 25, or the speed adjusting roller 41 may have a smaller diameter than the input roller 43.

  The present invention is a useful technique for conveying and stopping any load on a roller conveyor, or sorting a load using multiple roller conveyors.

  1, 101, 103 ... luggage, 3, 107 ... transfer roller, 5 ... main frame, 7 ... drive belt, 9, 105 ... roller conveyor, 11 ... pin, 13, 53 ... bearing hole, 15 ... coupling material, 17, 51 ... guide roller, 19, 39, 55, 57, 59 ... bolt, 21 ... sleeve, 23, 41, 109 ... Speed control roller, 25, 43 ... Input roller, 27,45 ... Speed change means, 29,47,49 ... Subframe, 31,33 ... Belt groove, 35 ... Speed increasing pulley 37 ... speed increasing belt, 111 ... stopper.

Claims (3)

A plurality of transfer rollers that receive the load in parallel with each other, a main frame that removably supports the plurality of transfer rollers, and a drive belt that travels in a direction crossing a direction in which the plurality of transfer rollers are parallel to each other, A roller conveyor that frictionally drives a plurality of transfer rollers with the drive belt,
A plurality of speed control rollers that receive the load in parallel with each other, a speed change means that rolls the input roller into contact with the drive belt and transmits a rotational force generated in the input roller to the speed control roller, and supports the speed change means, A roller conveyor comprising: a sub-frame detachably attached to the main frame.   The speed change means is joined to the input roller so as to have an axial center coincident with the speed increasing pulley having a larger diameter than the input roller, and the speed increasing pulley is wound around the speed increasing pulley and transmits the rotational force to the speed adjusting roller. The roller conveyor according to claim 1, further comprising a speed belt.   2. The speed change means, wherein the speed control roller is joined to the input roller with an axial center aligned, and the diameter of the speed control roller is relatively larger than that of the input roller. Roller conveyor.

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