JP5389569B2 - Conveyor meandering alignment device - Google Patents

Description

  The present invention relates to an apparatus for automatically aligning a meandering belt in a conveyor.

  As is well known, the conveyor belt is a trough roller (the trough roller is composed of a center roller and left and right side rollers inclined at a predetermined angle with respect to the center roller, and supports the belt in a bowl shape). In order to prevent the transported item from falling.

  If the belt meanders due to a single load or other factors and the side edge of the belt comes off the upper end of the side roller, the spillage occurs. There are methods (for example, Japanese Patent Laid-Open No. 9-208024 and Japanese Patent Laid-Open No. 2003-176209).

  Therefore, even if the belt is supported by the trough roller and the self-aligning function is given to the trough roller, the stable load is lost due to the meandering of the belt, and a part of the conveyed product spills from the side edge of the belt. In some cases, the belt is U-shaped to prevent the fall of the conveyed product (Patent Documents 1 and 2).

Actual Fair Report 7-7399 JP-A-7-172540

  By the way, in the formats of Patent Documents 1 and 2, the belt shape is U-shaped to prevent spillage.

  However, there is no automatic alignment function when the belt meanders due to the single load of the loaded transported object, etc., so the U-shaped shape of the belt breaks with meandering, and the belt can run stably. Can not.

  In order to maintain the U-shaped shape of the belt, an ear portion bulging over the entire length of both side edges of the belt is provided, and both side edge surfaces of the ear portion are sandwiched between a pair of stationary guide rollers. .

  However, a strong force acts on the pinched portion due to the meandering of the belt to inhibit the smooth rotation of the guide roller, and in addition to damaging the ear part in a short period of time due to the strong force acting on the ear part, it has a special shape The use of a belt also caused a problem of significant cost increase.

  Therefore, the present invention is to solve the various problems described above.

  In order to solve the above-mentioned problems, the present invention comprises a center roller for supporting the center of the lower surface of the carrier side belt of the conveyor, and a pair of upwardly inclined side rollers for supporting both sides of the center of the lower surface of the carrier side belt. It is pivotally supported by a roller stand, and is supported by a fulcrum so that the center between both sides of the roller stand pivots in a plane with respect to the conveyor frame, and is arranged on both sides of the roller stand so as to be on both sides of the conveyor frame. A column member that tilts in the running direction of the belt that supports the lower end through a fulcrum portion is provided, and the outer side surfaces of both side edges of the belt that stand upward from the outer end of the side roller are supported on the upper end side of the column member. A horizontal arm that pivotally supports the standing side roller and projects in the direction along the side edge of the belt from the upper end of the column member is provided, and the arm is provided at the projecting end of the arm A belt meandering detection rotor is provided immediately above both side edges where the belt stands, and a transmission means is provided for rotating the roller stand in the middle of the column member and the outer end of the roller stand as the column member tilts. Adopt the configuration.

  As described above, according to the meandering alignment apparatus for a conveyor of the present invention, the center roller and the pair of side rollers that are pivotally supported by the roller stand, and the standing side roller that is pivotally supported by the pair of left and right columns. The carrier side belt of the belt conveyor is supported in a U-shaped cross section (shape), and as the carrier side belt meanders, the arm is pushed up via the rotor that contacts the side edge on the rising side of the belt to tilt the column material. However, the inclination of the standing side roller of the column member causes a force to correct the meander to the standing side edge portion of the belt, and the belt stand is forcibly turned through the transmission means to correct the meandering of the belt. . That is, the belt U-shape can be stably maintained by a synergistic effect of first applying a force in the meandering correction direction to the belt by the standing side roller and then applying a force in the direction to correct the meandering to the belt by the roller stand forcibly turning. it can.

  For this reason, the U-shape of the belt is always maintained (by meandering correction) to prevent spillage, and the corrective action is instantly responded to ensure meandering correction.

FIG. 1 is a plan view showing an embodiment of the present invention. FIG. 2 is a longitudinal front view of the above. FIG. 3 is a longitudinal side view of the same. FIG. 4 is a plan view showing the action during meandering. FIG. 5 is a longitudinal rear view of the same. FIG. 6 is a side view of the same.

  Embodiments of the present invention will be described with reference to the accompanying drawings.

  In the embodiment of the present invention, as shown in FIGS. 1 to 3, a roller stand B is provided below the carrier side belt a of the belt conveyor A so as to have a predetermined interval in the front and rear direction and cross the belt a. Is arranged, and the lower surface of the center between both sides of each roller stand B is supported via a fulcrum portion 2 of a vertical turning shaft so that it can turn on the plane with respect to the conveyor frame 1.

  The roller stand B includes a center roller 3 for supporting the center of the lower surface of the belt a and a pair of climbing side rollers 4 and 4 for supporting both sides of the center of the belt a in a trough shape. is there.

  The reason for using the center roller 3 and the pair of side rollers 4 and 4 is to support the bottom surface of the belt a and the lower bottom both sides of a substantially U shape.

Further, on both sides of the roller stand B, there are provided column members 6 and 6 which are supported on the conveyor frame 1 via a fulcrum portion 5 of a horizontal support shaft so as to be pivotable and tilt in the running direction of the belt a. On the inner side surface on the upper end side of the column member 6, a standing side roller 7 that supports the outer side surfaces of both side edges where the belt a stands is provided. That is, the belt a is supported in a U-shaped cross section by the center roller 3, the side rollers 4 and 4, and the standing side rollers 7 and 7.

  Further, a horizontal arm 8 projecting in the direction along the side edge of the belt a from the upper end of each column member 6 is provided, and the end of the horizontal arm 8 in the projecting direction is located immediately above both side edges where the belt a stands. A meandering detection rotor 9 for the belt a is provided.

  Further, in the middle of the column member 6 and the outer end of the roller stand B, a transmission means C for turning the roller stand B as the column member 6 tilts is provided.

  As the transmission means C, for example, the pin is passed through the hole of one of the opposing surfaces of the column member 6 and the roller stand B and the other bifurcated piece or projecting piece. Along with this, an engaging relationship for turning the roller stand B is adopted.

  With the above configuration, when a meandering phenomenon occurs in the belt a due to the influence of a single load (shown in FIG. 5) of the conveyed product D on the belt a, the belt a (When the belt a does not meander, there is no contact between both side edges of the belt a and the two detection rotors 9 as shown in FIG. 2).

  Then, the horizontal arm 8 having the detection rotor 9 in contact with the side edge of the running belt a is pushed up (as shown in FIG. 6), and the column material 6 is moved along with the standing side roller 7 in the running direction of the belt a. And tilted (as shown in FIG. 6).

  As a result, the roller stand B is forcibly turned counterclockwise in FIG. 4 by the transmission means C on the tilted column member 6 side.

  On the other hand, the column 6 having the non-contact side horizontal arm 8 between the side edge of the belt a and the detection rotor 9 is tilted in the direction opposite to the traveling direction of the belt a through the transmission means C by the forced rotation of the roller stand B. To do.

  As the roller stand B is forcibly turned, the axis of the center roller 3 and the side rollers 4 crosses the belt a obliquely with respect to the running direction of the belt a.

  Then, the action of moving the belt a in the opposite direction of the meandering occurs, and the meandering is automatically corrected. That is, a force in the direction of correcting the meandering acts on the belt a by the standing side roller 7 that tilts in the running direction of the belt a as the column material 6 tilts, and on the other hand, through the transmission means C as the column material 6 tilts. The roller stand B is forcibly turned, and the U-shape of the belt a is stably maintained by a synergistic effect in which the force in the direction of correcting the meandering acts on the belt a by the center roller 3 and the side rollers 4 of the roller stand B. Let

  Of course, when the meandering is corrected, the roller stand B, the standing side roller 7 and the column member 6 return to the original state.

A Belt conveyor a Belt B Roller stand C Transmission means D Conveyed object 1 Conveyor frame 2 Supporting point part 3 Center roller 4 Side roller 5 Supporting point part 6 Column material 7 Standing side roller 8 Horizontal arm 9 Detection rotor

Claims (1)

  A center roller for supporting the center of the lower surface of the carrier side belt of the conveyor and a pair of upwardly inclined side rollers for supporting both sides of the center of the lower surface of the carrier side belt are pivotally supported on a roller stand and The roller stand is supported on both sides of the roller stand by a fulcrum so that the center between both sides rotates in a plane, and is arranged on both sides of the roller stand in the running direction of the belt that supports the lower end via the fulcrum on both sides of the conveyor frame. A tilting column member is provided, and an upright side roller that supports the outer side surfaces of both side edges of the belt that stands up from the outer end of the side roller is supported on the upper end side of the column member, and the upper end of the column member Provided with a horizontal arm projecting in a direction along the side edge of the belt, and a bell positioned immediately above both side edges of the belt at the projecting end of the arm. A meandering centering of a conveyor, characterized in that a meandering detecting rotor is provided, and a transmission means for turning the roller stand in accordance with the tilting of the pillar material between the middle of the pillar material and the outer end of the roller stand is provided. apparatus.

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