JP2009220920A - Junction conveyor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a junction conveyor capable of obtaining a high belt driving force using a slide pipe to fold back a belt, and preventing the belt from slipping in starting. <P>SOLUTION: The belt-type junction conveyor 1 which branches and converges a conveyed article to a conveying line 100 at a predetermined angle includes a slide pipe 11 installed in the vicinity of the conveying line 100 and folding back a belt 2 at a predetermined angle, a drive roller 3 and a tail roller 4, around which the belt 2 folded back by the slide pipe 11 is wrapped, and a back-up roller 6 pressing the belt 2 to the drive roller 3. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a junction conveyor for branching or joining a transported object at a predetermined angle with respect to a transport line. This junction conveyor is sometimes called a merge conveyor.

  A conveyor that branches a conveyed product from a conveyance line at a predetermined angle (for example, 30 ° or 45 °) or joins a conveyed product from a conveyance line at a predetermined angle is generally called a junction conveyor. FIGS. 3A and 3B respectively show junction conveyors 101 and 102 for branching and merging with respect to the transport line 100.

A junction conveyor 101 for branching shown in FIG. 3 (a) has a belt 51 that is folded back by a sliding pipe 50 disposed in the vicinity of the conveyor belt 104 of the transfer line 100, and is laid between a drive roller 52 and a tail roller 53. Yes. Similarly, in the junction conveyor 102 for merging shown in FIG. 3B, the belt 51 folded back by the sliding pipe 50 disposed in the vicinity of the linear conveyor belt 104 of the transfer line 100 is placed between the drive roller 52 and the tail roller 53. It is built in.
The drive roller 52 is connected to a drive device (not shown) such as a motor, and causes the belt 51 to travel in a certain direction.

  Here, the sliding pipe 50 is used at the branching / merging position of the conveyed product because the belt 51 of the junction conveyors 101 and 102 is installed at a predetermined angle with respect to the linear conveyor belt 104, and This is to cause the conveyed product to branch or merge with momentum.

  At this time, since the running resistance of the belt 51 may increase in the sliding pipe 50, the belt 51 installed between the drive roller 52 and the tail roller 53 is stretched with a loose tension that does not slip. However, when the junction conveyors 101 and 102 are activated with the transported material loaded, the drive roller 52 and the belt 51 slip before the drive tension is applied to the belt 51, and thus an abnormal noise (slip noise) is generated. In addition to the occurrence of wear of the belt 51 and the time difference between the start of driving and the actual conveyance of the conveyed product, for example, in the case of merging, the conveyed product from the junction conveyor 102 is transferred on the conveyance line 100. There is a problem that it may collide with other transported objects. For this reason, a standby conveyor is provided immediately before or immediately after the junction conveyors 101 and 102 without stopping and starting in a state where a conveyed product is loaded on the junction conveyors 101 and 102.

On the other hand, as disclosed in Patent Document 1, in place of the sliding pipe 50, there is an example in which the belt is folded back by a roller and the driving force is secured by belt tension. However, in this method, since the rotation direction of the roller at the turn-up portion and the traveling direction of the belt do not coincide with each other, there is a problem that the belt is biased and the operation must be stopped.
JP 2006-263386 A

  SUMMARY OF THE INVENTION An object of the present invention is to provide a junction conveyor that can obtain a high belt driving force while using a sliding pipe for folding a belt and does not slip when the belt is started.

  The junction conveyor of the present invention is a belt-type junction conveyor for branching or joining a transported object at a predetermined angle with respect to the transport line, a sliding pipe installed close to the transport line and turning the belt back at a predetermined angle; A drive roller and a tail roller on which a belt folded by the sliding pipe is installed, and a backup roller for pressing the belt against the drive roller are provided.

  The backup roller may be urged toward the drive roller by an elastic material. The backup roller may be a plurality of bearing-type rollers that are rotatably held at intervals on a support shaft disposed in parallel with the axial direction of the drive roller.

  According to the present invention, since the backup roller that presses the belt against the drive roller is provided, a sliding pipe is used for folding the belt, and even if the belt is tensioned with a loose tension, the belt is prevented from slipping at the start-up. can do. Therefore, it is possible to reduce the occurrence of abnormal noise (slip noise) at the start-up and the belt wear, and to run the junction belt almost simultaneously with the start of the drive roller. Since the time difference until the start is substantially eliminated, for example, the belt can be started while the conveyed product is loaded on the junction conveyor. As a result, it becomes easier to take the branching / merging timing of the conveyed product with the conveyor belt serving as the conveying line, and the standby conveyor is not required.

  Next, the junction conveyor of the present invention will be described with reference to the drawings. FIG. 1 is a schematic explanatory view showing a junction junction conveyor according to an embodiment of the present invention, and FIG. 2 is a schematic side view (a) and a schematic front view (b) showing a drive roller and a backup roller in the junction conveyor. It is.

  The junction junction conveyor 1 shown in FIG. 1 joins a conveyed product with a predetermined angle (for example, 30 °, 45 °) with respect to the conveyance line 100, is installed in the vicinity of the conveyance line 100, and is an endless junction. A sliding pipe 11 that folds the belt 2 (hereinafter simply referred to as the belt 2) at a predetermined angle, and a drive roller 3 and a tail roller 4 in which the belt 2 folded by the sliding pipe 11 is installed at both ends are provided. As the belt 2, for example, a resin belt in which a resin layer is laminated on a canvas surface is used.

  The sliding pipe 11 is composed of two pipes arranged one above the other, and each of the forward side belt 2 and the return side belt 2 is folded back. The sliding pipe 11 is a round bar or a round pipe with both ends fixed, and the axial direction is usually parallel to the conveyance line 100 of the belt 104.

  The drive roller 3 is installed at one end of the junction belt 2 and rotates by receiving a driving force from a driving source (not shown) so that the belt 2 travels in the arrow A direction. The tail roller 4 installed at the other end of the junction belt 2 is a driven roller, and rotates following the travel of the belt 2.

  As shown in FIGS. 1 and 2A, a snubber roller 5 is provided on the forward side of the belt 2 from the drive roller 3. The snubber roller 5 increases the winding angle of the belt 2 around the drive roller 3 (that is, increases the winding length) so that the driving force due to friction is transmitted quickly.

  Further, the drive roller 3 is provided with a backup roller 6 that presses the belt 2 against the drive roller 3. The backup roller 6 is composed of a plurality of bearing rollers 6 a that are arranged and held on a single support shaft 7 that is arranged in parallel with the axial direction of the drive roller 3 at intervals. Further, the pressing of the backup roller 6 against the drive roller 3 is forcibly performed by a spring 10 (elastic material). That is, the backup roller 6 is urged toward the drive roller 3 by the spring 10.

  More specifically, the backup roller 6 is rotatably held by bearings 9 and 9 on the surface of the gantry 8 provided below the drive roller 3. At this time, the bearings 9 and 9 are provided with slits, and the support shaft 7 is inserted into the slits and held so as to be slidable toward the drive roller 3.

  Thus, since the backup roller 6 is divided | segmented into the some bearing type roller 6a, equal pressing becomes possible. Further, since the pressing is forced by the spring 10, even when the behavior of the belt 2 changes or the balance of the thickness is out of order, the pressing can always be performed uniformly. For this reason, since the belt 2 is securely held between the backup roller 6 and the drive roller 3, even if the belt 2 is loosely tensioned, it starts to run almost simultaneously with the start of the drive roller 3. Thus, the belt 2 can be prevented from slipping. By adding the backup roller 6, it is considered that the driving force is increased by about 1.2 times or more.

  In the above embodiment, the snubber roller 5 is provided in addition to the backup roller 6 to increase the winding angle of the belt 2 around the drive roller 3. However, only the backup roller 6 is provided and the snubber roller 5 may be omitted. .

  Further, although the backup roller 6 is divided into a plurality of rollers 6a, it is needless to say that the backup roller 6 may be constituted by one roll. Furthermore, instead of the spring 10 that biases the backup roller 6, other means that can press the backup roller in the direction of the drive roller 3 may be used. Examples of such other means include a means in which a backup roller is disposed above the drive roller 3 and the belt is pressed against the drive roller 3 by its own weight.

  As described above, the junction junction conveyor 1 which is an embodiment of the present invention has been described. However, the present invention can be similarly applied to a junction junction conveyor 101 as shown in FIG.

It is a schematic explanatory drawing which shows the junction conveyor for joining which is one Embodiment of this invention. (A) is a schematic side view showing the relationship between the drive roller and the backup roller in the junction conveyor shown in FIG. 1, and (b) is a front view thereof. (A) And (b) is a top view which shows the junction conveyor for a branch with respect to a conveyance line, respectively.

Explanation of symbols

1: Junction conveyor for junction, 2: Junction belt, 3: Drive roller, 4: Tail roller, 5: Snubber roller, 6: Backup roller, 10: Spring (elastic material), 100: Conveyance line, 101: Junction conveyor for branching , 102: Junction conveyor for confluence

Claims (3)

A belt-type junction conveyor that branches or merges a conveyed product at a predetermined angle with respect to a conveying line,
A sliding pipe that is installed in the vicinity of the conveying line and folds the belt at a predetermined angle; a drive roller and a tail roller on which the belt folded by the sliding pipe is installed; and a backup roller that presses the belt against the drive roller. A junction conveyor characterized by comprising.   The junction conveyor according to claim 1, wherein the backup roller is biased toward the drive roller by an elastic material.   3. The junction conveyor according to claim 1, wherein the backup roller is a plurality of bearing-type rollers that are rotatably arranged at intervals on a support shaft that is arranged in parallel with the axial direction of the drive roller.

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