JP5070243B2 - Gate conveyor for flat glass - Google Patents

Description

  The present invention relates to a gate conveyor for sheet glass, and more specifically, used in a conveyor system installed in a production line process of sheet glass, and immediately before a diverter that changes the sheet glass conveyance direction to a direction orthogonal to the moving direction so far. The present invention relates to an apparatus for temporarily placing a plate glass before the plate glass is transferred to a diverter.

  A diverter is an apparatus for changing the conveyance direction of plate glass in a plate glass production line process. An example of a conventional diverter will be schematically described. In a conventional sheet glass transport direction changing device, a plurality of first transport rollers for transporting a sheet glass in the first transport direction are arranged in parallel to a second transport direction orthogonal to the first transport direction in a predetermined main frame. A plurality of rotation shafts are arranged and fixed at predetermined intervals, and a plurality of second conveyance rollers for conveying the plate glass in the second conveyance direction are arranged in parallel to the first conveyance direction. A plurality of arrays are fixed to a plurality of rotating shafts at predetermined intervals. Then, for example, the upper and lower portions of the second transport roller are vertically moved by the lifting mechanism so that two heights, that is, a position lower than the top of the first transport roller and a position higher than the top of the first transport roller can be taken. Driven in the direction.

  The plate glass that has been transported in the first transport direction in a state where the uppermost portion of the second transport roller is lower than the uppermost portion of the first transport roller is temporarily stopped on the main frame. Next, the elevating mechanism is driven to move the uppermost part of the second transport roller to a position higher than the uppermost part of the first transport roller, and the plate glass is held on the second transport roller. By rotating the second transport roller in this state, the transport direction of the plate glass is changed from the first transport direction to the second transport direction orthogonal thereto.

  All the first transport rollers are simultaneously rotated in the same direction at the same speed, and similarly, all the second transport rollers are simultaneously rotated in the same direction at the same speed. Further, the first transport roller and the second transport roller are not driven simultaneously. Therefore, in order to prevent the rotation shaft of the first transport roller and the rotation shaft of the second transport roller from spatially interfering with each other, the outer diameter of the second transport roller and the outer diameter of the first transport roller are set larger than the vertical diameter. Structural contrivances are required, such as making the rotational axis position of the second transport roller in the direction lower than the position of the first transport roller.

  In such a conventional sheet glass conveyance direction changing device, a plurality of first conveyance rollers and a plurality of second conveyance rollers are separately arranged, and the second conveyance rollers are moved up and down with respect to the first conveyance rollers. Since it is necessary to separately install an elevating mechanism for performing the direction changing function, the configuration of the apparatus is very complicated, and the facility cost is increased.

  Therefore, for the purpose of simplifying the configuration of the diverter itself and reducing the facility cost, the applicant of the present application has determined that the forklift mechanism and the direction (second transport direction) orthogonal to the first transport direction (first transport direction). ) Which has only a driving roller for conveying the plate glass, the conveyance is stopped on the gate conveyor provided immediately before the diverter, and the temporarily placed plate glass is transferred onto the divertor using a forklift mechanism. Proposed (reference example).

  The gate conveyor itself does not include a driving roller for transporting in the first transport direction, but includes a driven roller for transporting the plate glass transported from the upstream side in the transport direction by a certain distance by its inertia. ing. By the way, in the plate glass production line process, plate glass of various sizes is produced and transported. Therefore, in the gate conveyor and the diverter, the driving roller and the driven roller are both in the transport direction of the plate glass and the direction orthogonal thereto. It is preferable that they are uniformly arranged at regular intervals. However, the gate conveyor has to secure a space for the fork part of the forklift mechanism to enter, and if a follower roller is not provided, a small plate glass has been conveyed to the gate conveyor. In some cases, the glass sheet may not be held uniformly by the driven roller but may be held in a biased manner.

  The present invention is provided in front of a diverter using the forklift mechanism, and in a gate conveyor in which the conveyed plate glass is temporarily placed, prevents the bias regardless of the size of the plate glass and prevents the fork from entering. Its purpose is to make it easier.

  In order to achieve the above object, the invention of claim 1 is used in a conveyor system to change the direction of conveyance of a plate glass conveyed in the first conveyance direction to a second conveyance direction orthogonal to the first conveyance direction. A plate glass gate conveyor installed in the introduction section of the diverter and in which the conveyed plate glass is temporarily detained, with a main frame constituting a work table and an axis parallel to the second transfer direction as a rotation center Are rotatably supported, arranged in a matrix, arranged at predetermined intervals in the second conveying direction, and in the first conveying direction, a first predetermined interval and a second predetermined interval wider than the first predetermined interval. Are provided between a plurality of driven rollers arranged in a predetermined pattern, and two rows of driven rollers adjacent to each other with a second predetermined interval, and parallel to the second conveying direction. Auxiliary roller device including a plurality of auxiliary rollers rotatably supported around a shaft and arranged in a matrix, and an auxiliary roller moving unit that reciprocates the auxiliary roller device by a predetermined distance in the first conveying direction. And after the plate glass is conveyed onto the main frame, the auxiliary roller moving unit moves the auxiliary roller by a predetermined distance in the first conveying direction, thereby allowing the fork portion of the diverter to enter. It is characterized by securing a space to perform.

  According to a second aspect of the present invention, in the gate conveyor for glass sheets according to the first aspect, the auxiliary roller device is parallel to the pair of longitudinal beams provided in parallel to the first transport direction and to the second transport direction. A plurality of horizontal beams provided on the horizontal beam, and the plurality of auxiliary rollers are arranged on the horizontal beam at predetermined intervals that are uniform or non-uniform in the second conveying direction. Features.

  According to a third aspect of the present invention, in the gate conveyor for glass sheets according to the second aspect, the auxiliary rollers are provided in parallel to the second conveying direction on a plurality of upright brackets provided vertically on the cross beams. It is characterized in that it is rotatably supported around a rotation axis.

  According to a fourth aspect of the present invention, in the gate conveyor for plate glass according to the second aspect, a guide member is provided on each bottom surface of the vertical beam of the support base, and a portion corresponding to the guide member on the bottom surface portion of the main frame Further, a guide rail that is engaged with the guide member is provided.

  The invention of claim 5 is the sheet glass gate conveyor according to claim 4, wherein the guide members are respectively installed at a front end portion and a rear end portion of the vertical beam, and the guide rail corresponds to the guide rail, It is provided at four places on the main frame.

  According to a sixth aspect of the present invention, in the gate glass gate conveyor according to any one of the first to fifth aspects, the auxiliary roller moving portion is fixed to the bottom portion of the main frame and is predetermined in the first transport direction. It is characterized by comprising a cylinder having a rod that is projected and retracted by a length, and a rod fixing base that is integrally connected to the rod of the cylinder and fixed to the support base.

  As described above, according to the gate conveyor for glass sheets according to the present invention, for example, in the initial state in which the auxiliary roller is located at the center of the two rows of driven rollers adjacent to each other at the second predetermined interval, the first transport direction In this case, the driven roller and the auxiliary roller are arranged at substantially uniform intervals. In this state, if the plate glass has been conveyed due to its inertia, the driven roller and the auxiliary roller contact the back surface of the plate glass at regular intervals regardless of the size of the plate glass, and support the weight of the plate glass almost evenly. As a result, it is possible to prevent the end portion of the plate glass from being bent by its own weight, and to prevent the plate glass from being biased and supported.

  Further, the auxiliary roller device only reciprocates the auxiliary roller by a predetermined distance in the first transport direction, and no member of the auxiliary roller device is displaced in the vertical direction. Therefore, the auxiliary roller device and the plate glass gate provided with the auxiliary roller device are provided. The height dimension of the conveyor can be reduced, or the space in the height direction can be used effectively. Further, the width of the main frame in the first transport direction and the second transport direction is hardly affected by the presence of the auxiliary roller device. Furthermore, when the auxiliary roller is moved in the first conveying direction, the auxiliary roller rolls on the back surface of the plate glass, so that the plate glass stopped on the main frame is hardly displaced in the first conveying direction.

The perspective view which shows the structure of the gate conveyor for plate glasses which concerns on one Embodiment of this invention. The perspective view which shows the structure of the bias prevention mechanism containing the auxiliary roller in the said gate conveyor for glass plates. The perspective view which shows the state by which the driven roller was extruded in one direction by the said bias prevention mechanism. The figure which shows the state before plate glass is conveyed in the said gate conveyor for plate glasses. The figure which shows a state when plate glass has been conveyed in the said gate conveyor for plate glass. The figure which shows a state when an auxiliary roller retracts in the said gate conveyor for glass plates. The figure which shows a state when the fork part of a diverter approached after the auxiliary roller retracted in the said gate conveyor for glass plates. The figure which shows the state by which the plate glass was lifted upwards with the fork part of the diverter in the said gate glass gate conveyor. The figure which shows the state by which the plate glass was transferred from the gate conveyor to the diverter side by the fork | toe part of the diverter in the said gate conveyor for plate glasses.

  Hereinafter, the gate conveyor for sheet glass which concerns on one Embodiment of this invention is demonstrated, referring an accompanying drawing. FIG. 1 shows a configuration of a sheet glass gate conveyor according to the present embodiment. FIG. 2 shows a configuration of a bias prevention structure in the above-described sheet glass gate conveyor, and FIG. 3 shows a state in which the driven roller is pushed out in one direction. 4 to 9 show a series of operations for transferring the plate glass from the gate conveyor to the diverter.

  As shown in FIGS. 4 to 9, in the conveyor system installed in the plate glass production line process, the gate conveyor 1 and the diverter 2 are orthogonal to the first plate glass transport direction (first transport direction) ( It is arranged adjacent to the second transport direction). The fork portion 9 of the diverter 2 is reciprocated in the second transport direction by a drive mechanism (not shown) and is raised and lowered in the vertical direction.

  As shown in FIG. 1, the gate conveyor 1 is supported by a main frame 5 constituting a work table and a plurality of followers that are rotatably supported around an axis parallel to the second transport direction and arranged in a matrix. A roller 7a and a plurality of roller shafts 7 arranged in parallel to the second transport direction and having driven rollers 7a arranged and fixed at a predetermined interval P0 in the second transport direction are provided. As will be described later, the roller shaft 7 includes, for example, a set of three roller shafts 7 arranged at a first predetermined interval P1 in order to secure a space S for the fork portion 9 of the diverter 2 to enter. The roller shafts 7 are arranged at a second predetermined interval P2 that is wider than the first predetermined interval P1. The fork 9 of the diverter 2 enters the space S between each pair of roller shafts at the second predetermined interval P2. For example, the second predetermined interval P2 is preferably twice the first predetermined interval P1.

  The gate conveyor 1 further includes an auxiliary roller device 4 provided in the space S as a bias prevention mechanism. As shown in FIG. 2, the auxiliary roller device 4 includes a pair of vertical beams 11 provided parallel to the first transport direction and a plurality of (for example, substantially L-shaped cross-sections) provided parallel to the second transport direction. 5) horizontal beams 12 and a plurality of upright brackets 14 vertically provided on the horizontal beams 12, and an auxiliary roller moving unit 20 for reciprocating the support 10 in the first conveying direction. And a plurality of auxiliary rollers 13 that are rotatably supported around a rotating shaft 14a provided in parallel to the second conveying direction on each upright bracket 14, respectively. Two sets of auxiliary roller devices 4 are juxtaposed in the second transport direction.

  In this embodiment, six auxiliary rollers 13 are provided for one transverse beam 12, but the distance P3 between the pair of auxiliary rollers provided at the center is two pairs of auxiliary rollers provided at both ends. It is set to be narrower than the roller interval P4. In addition, substantially rectangular parallelepiped guide members 11 a are provided downward on the bottom surfaces (back surfaces) of both ends of each vertical beam 11 in the first conveying direction, and guide rails 5 a provided on the bottom surface of the main frame 5. Is engaged. The guide rail 5a is formed with a protrusion having a mountain-shaped cross section, and a groove having a cross-sectional valley shape is formed on the bottom surface of the guide member 11a. The support 10 is supported so as to be movable in the first transport direction by engaging the protrusions and the grooves.

  The auxiliary roller moving unit 20 is fixed to the bottom of the main frame 5 and is integrally connected to a pneumatic or hydraulic cylinder 21 having a rod 21a protruding and retracting a predetermined length in the first transport direction, and the rod 21a of the cylinder 21. The rod fixing base 22 is fixed to the support base 10.

  As described above, when the second predetermined interval P2 is twice the first predetermined interval P1, the driven roller 7a and the auxiliary roller 13 are arranged at a substantially uniform interval. In this state, if the plate glass 3 has been transported due to its inertia, the driven roller 7a and the auxiliary roller 13 come into contact with the back surface of the plate glass 3 at regular intervals regardless of the size of the plate glass 3, and the weight of the plate glass 3 is substantially reduced. Support evenly. As a result, it is possible to prevent the end portion of the plate glass 3 from being bent by its own weight, and to prevent the plate glass 3 from being biased and supported.

  Next, with reference to FIG. 4 thru | or FIG. 9, operation | movement of the gate conveyor for plate glasses which concerns on this embodiment is demonstrated. FIG. 4 shows a state before the plate glass is conveyed in the gate conveyor for plate glass. In the state shown in FIG. 4, the rod 21 a of the cylinder 21 is inserted and submerged inside the cylinder, and the support base 10 is in the initial position. At this time, the auxiliary roller 13 is located at the center of the first predetermined interval P1 between each pair of the roller shafts 7 in the first transport direction. Further, the outermost uppermost part of the driven roller 7a and the uppermost outermost part of the auxiliary roller 13 are positioned at substantially the same height in the vertical direction.

  FIG. 5 shows a state when the plate glass 3 is conveyed on the gate conveyor 1. At this time, since the driven roller 7a and the auxiliary roller 13 are arranged substantially evenly in the first conveying direction and the second conveying direction, the plate glass is driven by the driven roller 7a and the auxiliary roller regardless of the size of the conveyed plate glass. 13 is held uniformly. In the first transport direction, since the auxiliary roller 13 is located in front of the fork portion 9 of the diverter 2, the fork portion 9 cannot advance in the second transport direction.

  FIG. 6 shows a state when the auxiliary roller 13 is retracted. When the cylinder 21 is driven and the rod 21a protrudes, the support base 10 is moved by a predetermined distance in the first transport direction, and the state shown in FIGS. The auxiliary roller 13 moves in the first conveying direction by the predetermined distance. In the first conveying direction, the auxiliary roller 13 is not positioned in front of the fork portion 9 of the diverter 2, and the fork portion 9 is in the second conveying direction. You can move forward. When the auxiliary roller 13 is moved in the first conveying direction, the auxiliary roller 13 rolls on the back surface of the plate glass 3, so that the plate glass 3 stopped on the main frame 5 is hardly displaced in the first conveying direction. .

  FIG. 7 shows a state when the fork portion 9 of the diverter 1 enters the space S between each pair of the roller shafts 7 by a driving mechanism (not shown) after the auxiliary roller is retracted. FIG. 8 further shows a state in which the glass sheet 3 is lifted upward by the fork portion 9 of the diverter 2. FIG. 9 shows a state where the plate glass 3 is transferred from the gate conveyor 1 to the diverter 2 side by the fork portion 9 of the diverter 2. When the fork portion 9 of the diverter 2 lifts the plate glass 3 and returns to the original position, the cylinder 21 operates to immerse the rod 21a backward, and at the same time, return the auxiliary roller device 4 to the initial position shown in FIG. Wait for the next plate glass 3 to be conveyed. By continuously repeating the operations shown in FIG. 4 to FIG. 9, the conveyance direction of the sheet glass continuously conveyed in the production line process of the sheet glass is changed from the predetermined direction (first conveyance direction) to the direction (second) The direction can be smoothly changed in the transport direction).

  In addition, the number of arrangement | sequences and the space | interval of the driven roller 7a and the auxiliary roller 13 in the said embodiment are an illustration to the last, and are not limited to the description. For example, in the example shown in FIG. 2 and FIG. 3, a plurality of auxiliary rollers 13 provided on one cross beam 12 and a pair of auxiliary rollers provided at the center portion P <b> 3 are provided at both ends. Although set so as to be narrower than the interval P4 between the pair of auxiliary rollers, they may all be arranged at equal intervals. Further, by shifting the position of the driven roller 7a and the position of the auxiliary roller 13 in the second transport direction, the driven roller 7a and the auxiliary roller 13 do not interfere with each other, and the moving distance of the auxiliary roller 13 can be increased. As a result, the space into which the fork portion 9 of the diverter 2 enters can be widened, or the diameter of the auxiliary roller 13 can be increased.

1 Gate conveyor 2 Diverter 3 Sheet glass 4 Auxiliary roller device (bias prevention mechanism)
DESCRIPTION OF SYMBOLS 5 Main frame 5a Guide rail 7 Roller shaft 7a Follower roller 9 Fork part 10 Support stand 11 Vertical beam 11a Guide member 12 Cross beam 13 Auxiliary roller 14 Upright bracket 14a Rotating shaft 20 Auxiliary roller moving part 21 Cylinder 21a Rod 22 Rod fixed stand

Claims (6)

Plate glass used in a conveyor system and installed in a diverter introduction part for changing the conveyance direction of a plate glass conveyed in the first conveyance direction to a second conveyance direction orthogonal to the first conveyance direction, and has been conveyed Is a plate glass gate conveyor temporarily detained,
A mainframe that constitutes a workbench;
The shaft is rotatably supported with an axis parallel to the second transport direction as a rotation center, arranged in a matrix, arranged at predetermined intervals in the second transport direction, and a first predetermined interval in the first transport direction. A plurality of driven rollers arranged in a predetermined pattern combining a second predetermined interval wider than the first predetermined interval;
A plurality of auxiliary rollers provided between two rows of driven rollers adjacent to each other at the second predetermined interval, rotatably supported around an axis parallel to the second transport direction and arranged in a matrix. An auxiliary roller device including an auxiliary roller moving unit that reciprocally moves the roller and the auxiliary roller device by a predetermined distance in the first transport direction;
After the plate glass is conveyed on the main frame, the auxiliary roller moving unit moves the auxiliary roller by a predetermined distance in the first conveying direction, thereby allowing the fork portion of the diverter to enter. A gate conveyor for flat glass characterized by ensuring. The auxiliary roller device includes a support base composed of a pair of longitudinal beams provided in parallel with the first transport direction and a plurality of transverse beams provided in parallel with the second transport direction,
2. The gate conveyor for plate glass according to claim 1, wherein the plurality of auxiliary rollers are arranged at predetermined intervals that are uniform or non-uniform in the second conveying direction on the transverse beam.   The auxiliary roller is rotatably supported by a plurality of upright brackets provided vertically on the cross beam so as to be rotatable about a rotation shaft provided in parallel with the second transport direction. Item 3. A sheet glass gate conveyor according to Item 2.   Guide members are respectively provided on the bottom surfaces of the vertical beams of the support base, and guide rails that are engaged with the guide members are provided on portions of the bottom surface of the main frame corresponding to the guide members. The gate conveyor for sheet glass according to claim 2, wherein the gate conveyor is a flat glass.   The guide members are respectively installed at a front end portion and a rear end portion of the longitudinal beam, and the guide rails are provided at four locations on the main frame correspondingly. 4. A gate conveyor for plate glass according to 4.   The auxiliary roller moving unit is fixed to the bottom of the main frame, and includes a cylinder having a rod protruding and retracting a predetermined length in the first transport direction, and is integrally connected to the rod of the cylinder. A plate conveyor for a glass sheet according to any one of claims 1 to 5, comprising a rod fixing base fixed to the plate.

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