JP2020069501A - Device for transporting cast frame - Google Patents

Abstract

To provide a device for transporting cast frames, capable of preventing cast frames from colliding against each other and capable of performing rapid transportation at a low production cost.SOLUTION: A device for transporting a plurality of cast frames each provided with a part to be engaged includes: a transportation passage on which the plurality of cast frames are arranged in a line along a transporting direction and are transported; a moving body extending in parallel on the transportation passage so as to be movable in the transporting direction; a plurality of engaging parts each provided on the moving body, for engaging the corresponding part to be engaged, so that cast frames adjacent to each other are arranged in a line at predetermined relative positions; a moving body-driving device for reciprocating the moving body in the transporting direction; and an engaging and releasing device for engaging the plurality of engaging parts to the corresponding part to be engaged on an approach path of reciprocation, and for releasing the plurality of engaging parts from the corresponding part to be engaged on a return path thereof.SELECTED DRAWING: Figure 1

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flask feeder that conveys a plurality of flasks on a molding line.

  Conventionally, in a molding line, a plurality of flasks are continuously arranged on a conveying path and are sandwiched from the upstream side and the downstream side, and intermittently by one pitch corresponding to the length of one flask in the conveying direction. Be transported in a desired manner. The plurality of casting flasks transported in this manner may collide with each other between adjacent casting flasks to cause an impact when intermittently transported. In order to prevent such a collision between the flasks, a low-speed transfer region for closing the gap at the start of the transfer is provided to prevent the clearance between the adjacent flasks. In addition, it is necessary to always provide a gap during transportation to prevent the flasks from contacting each other.

  Patent Document 1 describes an apparatus that avoids collision of molds by sequentially conveying the molds with a gap between the molds.

JP 2002-205145 A

  However, in Patent Document 1, a plurality of drive units driven by rollers must be provided in series for each region corresponding to one mold, which increases the manufacturing cost. Further, since the molds are sequentially transported with a gap between them, there is a problem in that a follow-up time corresponding to the number of the flasks is required, and the total carrying time is long.

  SUMMARY OF THE INVENTION It is an object of the present invention to provide a casting frame carrier which can prevent collisions between casting molds, can be manufactured at low cost, and can be carried quickly.

  A casting flask conveying device according to the present invention is a casting flask conveying device that conveys a plurality of casting flasks each provided with an engaged portion, and conveys the plurality of casting flasks arranged side by side in a conveying direction. A path and a moving body that extends in parallel to the carrying path and is provided so as to be movable along the carrying direction, and that the adjacent casting frames provided on the moving body are arranged at a constant relative position. A plurality of engaging portions that engage with each of the engaged portions, a moving body drive device that reciprocates the moving body along the transport direction, and the plurality of engaging portions in the engaged portions. On the other hand, an engaging / disengaging device that engages in the outward path of the reciprocating motion and disengages in the return path.

  According to this, since the plurality of flasks are conveyed while the respective flasks are lined up at a fixed relative position, the flasks do not collide with each other during the conveyance. Further, since all the flasks are conveyed at the same time, a low-speed conveyance area for filling the gap at the start of the conveyance and a chasing time are not necessary, and the frames can be conveyed quickly.

It is a top view which shows the outline of the flask conveying apparatus of 1st embodiment which implemented this invention. FIG. 2 is a sectional view taken along line II-II in FIG. 1. FIG. 3 is a sectional view taken along line III-III in FIG. 1. It is a top view which expands and shows the core work area vicinity of a downstream. It is a top view which expands and shows the casting mold manufacturing apparatus vicinity of an upstream side. It is a side view which expands and shows the core work area vicinity on the downstream side. It is a side view which expands and shows the casting mold manufacturing apparatus vicinity of an upstream side. It is a VIII-VIII sectional view in FIG. FIG. 9 is a sectional view taken along line IX-IX in FIG. 4. FIG. 5 is a sectional view taken along line XX in FIG. 4. It is a top view which shows a casting frame in a partial cross section. It is a side view of a casting flask. It is a partial front view which shows a casting frame in a partial cross section. It is a figure which shows a moving body moving path in a cross section. It is a figure which shows a fall prevention mechanism. It is an enlarged view showing a wheel for vertical load and a wheel for horizontal load of a mobile. It is a top view which shows a connection device. It is sectional drawing which shows a connection device. It is an enlarged view which shows the connection structure of a connection apparatus in a cross section. It is a top view which shows a 1st engaging device. It is a side view which shows a 1st engaging device. It is a front view shown with a partial cross section which shows an engaging device. It is a top view which shows a 2nd engagement device. It is a top view which shows a 3rd engaging device. It is a top view which shows a 4th engagement device. It is a top view which shows a 5th engagement device. It is a top view which shows the state in which the flask was conveyed to the downstream side in the flask conveying apparatus. It is a side view which shows the state in which the flask was conveyed downstream in the flask feeder. It is a front view showing a crossing direction control device in a second embodiment. It is a side view which shows the cross direction control apparatus in 2nd embodiment.

(First embodiment)
A first embodiment in which the casting flask carrier according to the present invention is embodied in a molding line will be described below with reference to FIGS. 1 to 27. FIG. 1 shows an overall outline of a molding line ML including a casting flask carrier 1 according to the present invention. In this specification, the direction in which the casting flask MF is transported along the transport path 2 of the molding line ML is referred to as the “transport direction”. The transfer of the casting flask MF is compared with the flow of water, and the side of the molding line ML which is the base point of the transfer is called "upstream side" and the side which is the end point of the transfer is called "downstream side". In the transport direction, the upstream direction is referred to as “rear” and the downstream direction is referred to as “front”. When a center line extending in the transport direction of the transport path is assumed, the side farther from the center line is referred to as “outside”, and the side closer to the center line is referred to as “inside”.

  The casting flask transfer device 1 includes a transfer path 2, a moving body 3, an engaging device 34 as an engaging portion, a moving body driving device 5, an engaging / disengaging device 36, and a stopped state maintaining device 37. The flask MF carried by the flask carrier 1 is provided with engaged parts (openings MFa, MFb) described later. In the molding line ML, as shown in FIG. 2, the flask separating device SD, the flask inner surface cleaning device CA, the mold molding device CM, the sand cutter device SC, the vertical flask reversing device ULR, and the core storing work from the upstream side, as shown in FIG. An area CSA, an upper flask reversing device UR, and a mold matching device TA are provided. The molding line ML is provided with a surface plate carriage transfer line PL for transferring a surface plate carriage on which the superposed molds are placed.

(Transport path)
The transport path 2 transports a plurality of casting molds MF (described later) side by side along the transport direction, and as shown in FIGS. 2 and 8, a base member 21, a lateral base member 22, a column 23, and a beam member 24. , A roller support member 25, and a roller 26.
The base members 21 are formed of, for example, iron members having a rectangular cross section, and a pair of base members 21 are provided so as to extend on the floor surface FL along the transport direction. The lateral base member 22 is formed of, for example, an I-shaped steel member. The lateral base members 22 are arranged between the pair of base members 21 so as to extend in a direction perpendicular to the transport direction, and a plurality of horizontal base members 22 are arranged in the transport direction. In the base member 21, a pair of pillars 23 are vertically erected at positions corresponding to both ends of each horizontal base member 22.

  The pillar 23 is formed of, for example, a hollow iron-made member having a rectangular cross section. A plurality of columns 23 are arranged along the transport direction. Beam members 24 are horizontally installed in a direction perpendicular to the transport direction of each column 23. The beam member 24 is formed of, for example, a hollow iron member having a rectangular cross section. A roller support member is provided at the upper end of each column 23 so as to extend along the transport direction.

  The roller support member 25 is formed of, for example, an iron member in a vertically long rectangular shape. The roller support members 25 are arranged in pairs outside the upper ends of the columns 23 in a direction orthogonal to the transport direction. A plurality of rollers 26 are provided inside the pair of roller support members 25.

  Each roller 26 is formed in a disk shape, for example, by a steel member. Each of the rollers 26 extends in a direction orthogonal to the carrying direction of the roller support member 25, and is rotatably provided on a rotating shaft (not shown) arranged along the carrying direction. Each roller 26 is provided with a rolling surface 26a on which the bottom surface of the casting mold MF comes into contact and rolls, and a flange portion 26b which is continuous with the rolling surface 26a and which projects radially outward on the outer periphery of the roller 26 ( (See FIG. 8). The flange portion 26b constitutes an intersecting direction restricting device by contacting the inner side surface thereof with the side surface of the casting frame MF.

(Casting frame)
As shown in FIGS. 1, 11, and 12, the casting frame MF for transporting on the transportation path 2 is formed in a rectangular frame shape from a cast iron member, for example. When aligned on the transport path 2, the lower ends of the long sides on both sides are placed on a pair of rollers 26. As shown in FIGS. 11 to 13, a rectangular opening MFa as an engaged portion is provided on both side surfaces on the long side of the casting frame MF. The opening MFa is formed with a predetermined depth and has an upstream opening MFa1 provided at the upstream end, a downstream opening MFa3 provided at the downstream end, and a central opening provided at the central MFa2. Are provided respectively. Each opening MFa is provided with a rectangular parallelepiped guide MF1 at the upstream and downstream edges. For each guide MF1, for example, hardened carbon steel is used.

(Moving body)
The moving body 3 serves as an intermediary means for collectively transporting the plurality of casting molds MF along the transport path 2. As shown in FIGS. 1 and 3, the moving body 3 extends laterally of the conveying path 2 in parallel with the conveying path 2, and on a moving body moving path 31 (described later) provided in parallel with the conveying path 2. Are provided so as to be movable along the transport direction. The moving body 3 includes a plurality of small moving bodies 32, a connecting device 33 that connects the small moving bodies 32, and an engaging device 34 as an engaging portion.

As shown in FIG. 1, for example, the plurality of small moving bodies 32 include four small moving bodies (first to fourth small moving bodies 32a, 32b, 32c, 32d from the downstream side in the carrying direction) in the present embodiment. Has been).
The first to fourth small moving bodies 32a, 32b, 32c, 32d have a length in the transport direction and a connecting portion that connects the connecting devices 33 arranged between each other (upstream side connecting protrusion / downstream side connecting protrusion (described later)). ) Is different, other configurations are the same. The first small moving body 32a will be mainly described as a representative, and the differences will be described as necessary.

  As shown in FIGS. 4, 14, 15 and 16, the first small moving body 32a includes a first small moving body 32a1 and a first small moving body formed of a rectangular steel tube having a hollow rectangular cross section. A vertical load wheel 322 and a lateral load wheel 323 provided on 32a1, a fall prevention mechanism 35, an engagement device 34, and a connection device 33 connected to the second small moving body 32b are provided. The first small moving body main body 32a1 is formed in a rectangular parallelepiped shape with a length corresponding to the three casting molds MF arranged continuously in the transport path 2.

(Connection part)
At the upstream end of the first small moving body 32a1, as shown in FIGS. 6, 16 and 17, an upstream connecting projection 32a2 as a connecting portion to be connected to a connecting device 33 described later is provided. It is provided so as to project toward the small moving body 32b side. The upstream side connection protrusion 32a2 is formed in a rectangular flat plate shape extending in the transport direction and having a long side in a cross section arranged horizontally. A connection hole 324 having a central axis extending in the vertical direction is formed through the upstream connection protrusion 32a2.

  At the upstream end of the second small moving body 32b1, as shown in FIG. 6, an upstream connecting protrusion 32b2 similar to that of the first small moving body 32a1 is provided to project toward the third small moving body 32c. At the downstream end of the second small moving body 32b1, a similar downstream connecting projection 32b3 is provided so as to project toward the first small moving body 32a.

  As shown in FIG. 7, an upstream upper protrusion 32c2 is provided on the upper surface of the upstream end of the third small moving body 32c1 so as to project upward from a position biased toward the transport path. The upstream-side upper protrusion 32c2 corresponds to the connecting portion. The upstream-side upper protrusion 32c2 extends in the vertical direction and is formed in a rectangular flat plate shape whose long side in cross section is arranged along the transport direction. A connection hole 324 having a central axis extending in the horizontal direction perpendicular to the transport direction is formed through the upstream upper protrusion 32c2. A downstream connecting protrusion 32c3 similar to the downstream connecting protrusion 32b3 of the second small moving body 32b1 is provided at the downstream end of the third small moving body 32c1.

  On the upper surface of the end portion on the downstream side of the fourth small moving body 32d1, a downstream upper projection 32d3 is provided so as to project upward from a position biased to the transport path 2 side. The downstream upper protrusion 32d3 is similar to the upstream upper protrusion 32c2 of the third small moving body 32c1.

(Wheels for vertical load and wheels for horizontal load)
As shown in FIGS. 14, 15 and 18, longitudinal load wheels 322 and lateral load wheels 323 are provided at the front and rear lower portions in the moving direction of the first small moving body 32a1.
The vertical load wheel 322 and the lateral load wheel 323 are provided on the first small moving body 32a1 via a bearing device 325 provided below the first small moving body 32a1. The bearing device 325 includes a vertical load rotating shaft 322a extending perpendicularly to the carrying direction, and a pair of lateral load rotating shafts 323a extending vertically and arranged at right angles to the carrying direction. A vertical load wheel 322 is rotatably provided on the vertical load rotation shaft 322a, and the vertical load wheel 322 rolls on the upper surface of a rail 314 of a moving body moving path 31 (described later). Lateral load wheels 323 are rotatably provided on the pair of lateral load rotation shafts 323a, and the lateral load wheels 323 hold both side surfaces of the rail 314 of the moving body moving path 31 and roll. Also in the second to fourth small moving bodies 32b1, 32c1, 32d1, similarly, a vertical load wheel 322 and a lateral load wheel 323 are provided.

(Moving body moving path)
As shown in FIGS. 6, 7, 8 and 14, the moving body moving path 31 is a moving path on which the moving body 3 moves along the transport direction, and includes a moving path base portion 311, a moving path support 312, and The rail support member 313 and the rail 314 are provided. The moving path base portion 311 extends in a direction perpendicular to the carrying direction by, for example, an I-shaped steel member, and a plurality of (16 in the present embodiment) are arranged on the floor surface along the carrying direction. Has been. Each moving path base portion 311 is fixed to the floor surface via unillustrated bolts and nuts. At the end of each moving path base portion 311 on the transport path 2 side, moving path columns 312 are provided upright.

  Each moving path support 312 is formed of, for example, a rectangular hollow steel member. Each moving path support 312 fixedly supports at its upper end a rail support member 313 extending along the transport direction. The rail support member 313 is formed of, for example, an I-shaped steel member. The rail support member 313 is set so as not to be provided in a portion corresponding to the moving body driving device 5 or the mold making device CM described later in order to prevent interference between the devices.

  A rail 314 on which the vertical load wheel 322 and the lateral load wheel 323 roll is fixed to the upper surface of the rail support member 313. The rail 314 is set from the first rail to the fourth rails 314a, 314b, 314c, 314d in correspondence with the length used by the first to fourth small moving bodies 32a, 32b, 32c, 32c in reciprocating motion. (See FIGS. 6 and 7).

In the present embodiment, the first rail 314a is provided in a range in which the longitudinal load wheel 322 and the lateral load wheel 323 on the front side of the first small moving body 32a are used in reciprocating motion. The second rail 314b reciprocates from a vertical load wheel 322 and a lateral load wheel 323 on the rear side of the first small moving body 32a to a vertical load wheel 322 and a lateral load wheel 323 on the front side of the third small moving body 32c. It is provided in the range that is used in motion. The third rail 314c is provided in the range in which the vertical load wheel 322 and the lateral load wheel 323, which are behind the third small moving body 32c, are used in reciprocating motion. The fourth rail 314d is provided in a range in which the vertical load wheel 322 and the lateral load wheel 323 of the fourth small moving body 32d are used in a reciprocating motion.
Each small moving body 32a, 32b, 32c, 32d is provided with a fall prevention mechanism 35 via a mounting member 355 provided on the side surface of each small moving body main body 32a1, 32b1, 32c1, 32d1.

(Tipping prevention mechanism)
As shown in FIGS. 9 and 15, the falling prevention mechanism 35 prevents the moving body 3 from falling in a direction intersecting the carrying direction due to a lateral load. In addition, as shown in FIGS. 4 and 5, the falling prevention mechanism 35 corresponds to the position of the lateral load wheel 323 in each of the small moving bodies 32a, 32b, 32c, 32d, and is on the opposite side of the transport path 2. Are provided in the respective positions. The fall prevention mechanism 35 includes a basic support column 351, a cane support rail 352, a support cane 353, a lateral roller 354, and a mounting member 355.

  A plurality of base columns 351 are provided side by side on the outer sides of the respective movement route columns 312 of the movable body movement route 31 and vertically project from the movement route base portion 311. The base pillar 351 is formed, for example, of a rectangular hollow steel member and is thinner and lower than the moving path pillar 312. A cane support rail 352 is laterally provided on the upper end of each base column 351.

The cane support rails 352 correspond to the lengths used by the first to fourth small moving bodies 32a, 32b, 32c, 32c in reciprocating motions, respectively, from the first cane support rails to the fourth cane support rails 352a, 352b, Up to 352c and 352d are set (see FIGS. 6 and 7).
As shown in FIG. 9, each of the cane support rails 352a, 352b, 352c, 352d is provided in parallel in a laterally downward direction on the side opposite to the transport path 2. Each of the cane support rails 352a, 352b, 352c, 352d is made of, for example, a member made of sawdust, which has a rectangular cross section. A support cane 353 is supported on each cane support rail 352a, 352b, 352c, 352d.

  As shown in FIG. 15, the support cane 353 is formed of, for example, an iron member into a columnar shape having a hollow rectangular cross section and extending in the vertical direction. The upper portion of the support cane 353 is fixed to the side surface of the small moving bodies 32a, 32b, 32c, and 32d on the side opposite to the transport path 2 via a mounting member 355.

  The mounting member 355 is formed of an I-shaped steel member cut into a predetermined size. One end surface of the attachment member 355 is fixed to the side surface of each small moving body 32a, 32b, 32c, 32d, and the other end surface of the attachment member 355 is fixed to the upper side surface of the support cane 353, for example, by welding.

  At the lower end of the support cane 353, a pair of support shafts 353a extending vertically on both sides of the cane support rail 352 are fixed via flange-shaped support portions 353b. A horizontal roller 354 is rotatably supported on each of the support shafts 353a. The lateral roller 354 is formed of, for example, a steel member into a cylindrical shape whose axial direction is shorter than the radial direction. The paired lateral rollers 354 clamp the cane support rail 352 from both sides and roll while contacting both side surfaces of the cane support rail 352.

(Mobile body drive)
As shown in FIGS. 6 and 10, the moving body drive device 5 is provided between the first rail 314a and the second rail 314b in the moving body moving path 31 in correspondence with the first small moving body 32a. There is. One moving body driving device 5 reciprocates the first small moving body 32a, so that all the small moving bodies 32a, 32b. 32c and 32d are reciprocated. The moving body drive device 5 includes a base support portion 51, an electric motor 52 with a speed reducer, and a pinion and rack mechanism 53.

  The base support portion 51 is provided between the moving path support 312 on the upstream side of the first rail 314a and the moving path support 312 on the downstream side of the second rail 314b, and includes a base support rod 51a and a motor support base 51b. ing. The base support rod 51a is formed of, for example, a rectangular hollow steel member, and connects the lower portions of the moving path columns 312 facing each other. The motor support 51b is formed of, for example, a flat plate member made of steel, which is laterally bridged between the moving path columns 312 facing each other. An electric motor 52 with a speed reducer having a drive shaft 52a extending in a direction perpendicular to the transport direction is fixed to the motor support base 51b.

  The drive shaft 52a of the electric motor 52 with a reducer is provided so as to face the lower surface of the first small moving body 32a. A pinion gear 53a is provided around a drive shaft 52a of the electric motor 52 with a reducer. A rack gear 53b extending along the transport direction is fixed to the lower surface of the first small moving body 32a facing the pinion gear 53a. The pinion gear 53a and the rack gear 53b mesh with each other to form a pinion and rack mechanism 53. The drive shaft 52a rotates forward and backward by switching the gears of the speed reducer. ON / OFF of the electric motor 52 with a speed reducer and switching of the speed reducer are controlled by a controller (not shown).

(Engaging device (engaging part) / engaging device)
As shown in FIGS. 4 and 5, the first small moving body to the fourth small moving body 32a, 32b, 32c, 32d are engaged with the engaging portions at positions facing the casting frames MF arranged on the transport path 2. The engaging devices 34 are provided respectively. As shown in FIG. 12, each casting frame MF is provided with the engaged portion (opening MFa) with which the engaging portion engages as described above.

  As shown in FIGS. 20 to 26, the engagement device 34 includes five types of engagement devices 34, which are a first engagement device to a fifth engagement device 34 a, 34 b, 34 c, 34 d, and 34 e, and the conveyance path 2 Are selected and used according to a plurality of devices (mold making device, etc.) provided in. A first engagement device 34a shown in FIG. 20 and a second engagement device 34b shown in FIG. 23 are arranged on the first small moving body 32a.

  The first engagement device 34a includes two shaft portions 341 that respectively engage with the openings MFa of the casting frame MF, and a guide portion that allows the two shaft portions 341 to slide in the horizontal direction in a state where the two shaft portions 341 are separated at a predetermined interval. And 342. The guide portion 342 includes two slide shafts 342a and two guide cylinders 342b. Each of the guide cylinders 342b is formed in a circular cylinder shape and is fixed to the first small moving body 32a1 by penetrating the first small moving body 32a in a direction perpendicular to the transport direction. A slide shaft 342a is inserted in each of the guide cylinders 342b so as to be movable back and forth.

  The transport path-side tips of the two slide shafts 342a are integrally coupled by a coupling portion 343 extending in the transport direction. On the upper surface of the connecting portion 343, shaft portions 341 projecting toward the transport path 2 are fixed at positions facing the two slide shafts 342a, for example, by welding. As shown in FIG. 22, the two shaft portions 341 are arranged above the slide shaft 342a by the amount fixed to the upper surface of the connecting portion 343. The two shaft portions 341 are also integrally connected by the connecting portion 343. Each shaft portion 341 is formed in a rectangular cross section.

  The connecting portion 343 is connected to a piston rod 36a of an air cylinder device 36 as an engaging / disengaging device provided between the two guide cylinders 342b. The piston rod 36a is provided parallel to the slide shaft 342a. The two shaft portions 341 are integrally moved by the piston rod 36a of the air cylinder device 36 toward and away from the casting frame MF. The air cylinder device 36 is connected to an air supply source (not shown). An electromagnetic switching valve (not shown) is provided between the air cylinder device 36 and the air supply source. The operation of the electromagnetic switching valve is controlled by a controller (not shown).

  The second engagement device 34b differs from the first engagement device 34a in that the shaft portion 341 on the downstream side (upper side in FIG. 23) is not provided. The third engagement device 34c is different from the first engagement device 34a in that the shaft portion 341 on the upstream side (lower side in FIG. 24) is not provided. As shown in FIG. 25, the fourth engagement device 34d differs from the first engagement device 34a in that it has an upstream-side unevenly-distributed connecting portion 344 that causes the two connected shaft portions 341 to be unevenly distributed upstream. As shown in FIG. 26, the fifth engagement device 34e is the same as the downstream side eccentric connection part 3a for eccentrically distributing the two connected shaft parts 341 to the downstream side, and therefore, the same reference numerals are given and description thereof will be omitted. ..

  The shaft portion 341 of each engaging device 34 is adapted to engage with the opening MFa at any one position of each casting frame MF, and the opening corresponding to each engaging device 34a, 34b, 34c, 34d, 34e. When engaged with MFa, a gap t2 of, for example, 20 mm is set between adjacent molding frames MF (see FIG. 5).

(Connecting device)
As shown in FIGS. 4 and 5, the connecting device 33 includes a first connecting device 33a, a second small moving body 32b and a third small moving body 32a arranged between the first small moving body 32a and the second small moving body 32b. It has the second connecting device 33b arranged between the small moving body 32c and the third connecting device 33c arranged between the third small moving body 32c and the fourth small moving body 43d.

As shown in FIGS. 17 and 18, the first connecting device 33a includes a first connecting device body 33a1, a first spherical bearing 331, a second spherical bearing 332, a first connecting shaft 333, and a second connecting shaft 334. There is.
The first connecting device body 33a1 is formed of, for example, a rolled steel for general structure in the shape of a thin flat plate extending in the transport direction, and has a central axis perpendicular to the transport direction at both ends in the transport direction. One insertion port 335 and a second insertion port 336 are provided.

  As shown in FIG. 19, the first insertion port 335 has locking ribs 3351 formed on the inner circumference of the upper edge thereof so as to project radially inward. The outer ring 331a of the first spherical bearing 331 is press-fitted into the first insertion port 335 from below, and the axial width of the outer ring 331a of the first spherical bearing 331 is smaller than the width of the inner ring 331b. Since the first and second spherical bearings 331 and 332 are publicly known techniques, description thereof will be omitted.

  The first connection shaft 333 is inserted and fixed in the connection hole 324 of the upstream connection protrusion 32a2 and the inner ring 331b of the first spherical bearing 331 in the first small moving body 32a1. The first connecting shaft 333 includes a collar-shaped head portion 333a at the end supported by the first spherical bearing 331. The outer diameter of the head portion 333a is set to be larger than the inner diameter of the inner ring 331b and smaller than the inner diameter of the locking rib 3351. Female screw holes 333b into which the bolts B are screwed are formed at, for example, three positions at the end of the first connecting shaft 333 opposite to the head 333a. A disk-shaped pressing plate 337 is arranged at the opposite end. The holding plate 337 is formed with an outer diameter larger than the inner diameter of the connection hole 324, and an insertion hole (not shown) into which the bolt B is loosely fitted is provided so as to face the female screw hole 333b.

The pressing plate 337 is fixed to the lower surface of the upstream connecting protrusion 32a2 by being fastened with bolts B at three locations. When fixed, as shown in FIG. 26, the end of the connection hole 324 of the upstream connection protrusion 32a2 facing the first connection device body 33a1 side abuts on the end of the inner ring 331b. Since the width of the inner ring 331b in the axial direction is wider than the width of the outer ring 331a, the upstream connection protrusion 32a2 and the first connection device body 33a1 are connected with each other with a gap t1. The first connecting device 33a is an omnidirectional position generated between the first and second small moving bodies 32a and 32b due to the play caused by the gap t1 and the mutual sliding of the inner ring 331b and the outer ring 331a of the first spherical bearing 331. Absorbs the gap smoothly without rattling. The same applies to the connection between the second spherical bearing 332 and the second connection shaft 334 and the connection hole 324 of the downstream side connection protrusion 32b3 of the second small moving body 32b1.
Further, the second connecting device 33b is also similar to the first connecting device 33a, and therefore its explanation is omitted.

  As shown in FIG. 7, the third connecting device 33c connects the upstream upper protrusion 32c2 of the third small moving body 32c1 and the downstream upper protrusion 32d3 of the fourth small moving body 32d1. The third connecting device body 33c1 is formed with a length corresponding to the structure support pillars CMa arranged along the transport direction of the mold making device CM. The third connection device main body 33c1 is configured such that the long side of the cross section is vertically arranged so that the third connection device main body 33c1 does not interfere with the structure pillar CMa. The connection between the third connecting device body 33c1 and the upstream upper protrusion 32c2 of the third small moving body 32c1 and the connection between the third connecting device body 33c1 and the downstream upper protrusion 32d3 of the fourth small moving body 32d1 are Since the first and second connecting shafts 333 and 334 are inserted from the horizontal direction perpendicular to the transport direction, and the other configurations are the same, the description thereof will be omitted.

(Stop condition maintenance device)
The stopped state maintaining device 37 maintains the stop position of each casting flask when each casting flask MF transported on the transport path 2 has stopped. As shown in FIGS. 4 and 5, the stopped state maintaining device 37 is fixed to seven positions on the transport path 2 on the side opposite to the moving body 3. The stopped state maintaining device 37 is configured in the same manner as the first engagement device 34a and the air cylinder device 36.
The air cylinder device 36 of the stopped state maintaining device 37 is connected to an air supply source (not shown). An electromagnetic switching valve (not shown) is provided between the air cylinder device 36 and the air supply source, and the operation of the electromagnetic switching valve is controlled by a controller (not shown).

Further, an opening MFb similar to the opening MFa as the engaged portion is formed in each of the casting flasks MF on the side surface of each casting flask MF on the side of the stopped state maintaining device 37 side. The openings MFb are provided at three positions in line symmetry with respect to the center line extending in the transport direction of the casting frame MF. Two adjoining flasks MF in a stopped state are each fixed by one first engaging device 34a. Each of the flasks MF is provided with a gap t2 of, for example, 20 mm between adjacent flasks MF, and the stopped state is maintained.
Hereinafter, as shown in FIGS. 1 and 2, various devices provided in the molding line will be outlined in the order in which they are arranged from the upstream side of the transport path.

(Filler separation device)
The casting flask separating device SD separates the casting flask MF in a state in which the molds (not shown) are extracted by the mold separating device (not shown) and overlapped, into the upper casting flask UMF and the lower casting flask LMF. The flask separating device SD is a known technique, and thus its description is omitted. In addition, although the upper flask UMF and the lower flask LMF are alternately transported on the transport path 2, in the present specification and the drawings, unless specifically limited as in the upper flask reversing device. , And shall be illustrated as the casting frame MF without distinction.

(Internal cleaning device for casting frame)
The flask inner surface cleaning device CA brushes off the molding sand adhering to the inner surface of the flask MF. The inner surface cleaning device CA of the casting frame is a known technique, and thus its description is omitted. An example of the flask inner surface cleaning device is the flask inner surface cleaning device described in JP-A-55-133866.

(Mold making device)
The mold making apparatus CM puts molding sand into a polymerization frame composed of an upper molding frame UMF or a lower molding frame LMF, a model surface plate (not shown), and the like, and further squeezes to mold a mold. Since the mold making apparatus CM is a known technique, its description is omitted. Examples of the mold making apparatus include the mold making apparatus described in JP-A-2016-198781.

(Sand cutter device)
The sand cutter device SC smoothes the upper surface of the mold by scraping off excess sand on the upper surface of the mold. Since the sand cutter device SC is a known technique, the description thereof is omitted. As the sand cutter device, for example, a sand cutter device described in JP 2011-255419 A can be mentioned.

(Upper and lower flask reversing device)
The up-down casting frame reversing device ULR vertically inverts the pouring space of the upper mold and the lower mold, which are formed by pulling out the model below, so as to be directed upward. The upper and lower flask inverting device ULR is a well-known technique, and thus its description is omitted. Examples of the upper and lower flask reversing devices include the upper and lower flask reversing devices described in JP-A-2017-024068.

(Core storage work area)
As shown in FIGS. 4 and 9, the core storage work area CSA is an area where the core is placed in the lower mold. The core storage work is performed manually. Work decks WD on which the workers W board are provided on both sides of the transport path 2. Above the transport path 2, a crane CR for hooking and transporting a core is provided. The height of the upper surface of the lower flask (lower mold) LMF that is transported on the transport path 2 and the height of the work deck WD are set to the same height.

  If the height of the work deck WD is lower than the height of the upper surface of the lower flask LMF, the moving body 3 may be located above the work deck WD, which may deteriorate safety and work efficiency. If the height of the work deck WD is higher than the height of the upper surface of the lower flask LMF, it is necessary for the worker W to bend over and the manual core storage work becomes difficult. By matching the height of the upper surface of the lower flask LMF with the height of the work deck WD, the moving body 3 can be stored below the work deck WD, and the core insertion work can be performed safely and quickly.

(Upper flask inversion device)
The upper flask inversion device UR vertically inverts the upper mold (upper mold UMF) with the pouring space facing upward so as to overlap with the lower mold (lower mold LMF). The upper flask reversing device UR is a known technique, and thus its description is omitted.

(Mold matching device)
The mold matching device TA completes the mold by pouring the upper mold on the lower mold and enables pouring. Since the mold matching device TA is a known technique, its description is omitted.

(Operation)
Next, the operation of the flask transporting apparatus configured as described above will be described below with reference to FIGS. 1, 27 and 28.
First, the most upstream casting flask of the plurality of casting flasks MF arranged in a line is positioned at the carry-in position CIP. The arranged most downstream casting flasks are positioned at the downstream end position 2DE of the transport path 2.

  In the stopped state maintaining device 37, the control device is in a state in which the piston rods 36a of all the air cylinder devices 36 are advanced. As a result, all the flasks MF are in a state in which the shaft portions 341 of the stopped state maintaining devices 37 are individually engaged with the openings MFb. Further, in the engagement device 34, the piston rods 36a of all the air cylinder devices 36 are in the advanced state. As a result, all of the casting flasks MF are in a state in which the shaft portions 341 of the engaging devices 34 are individually engaged with the openings MFa. Due to the stop state maintaining device 37 and the engagement device 34, each of the flasks arranged in line is stopped in a state where a gap t2 is formed between the adjacent flasks.

  Next, the control device causes the stopped state maintaining device 37 to retract the piston rods 36a of all the air cylinder devices 36 in the stopped state maintaining device 37. As a result, the engagement with the casting flask MF by the stopped state maintaining device 37 is released. Then, the control device drives the electric motor 52 with a speed reducer, and causes the pinion and rack mechanism 53 to move the first small moving body 32a by one pitch in the carrying direction (a length corresponding to one casting frame MF along the carrying direction). Move) (outward). However, one pitch includes a gap t2. The second small moving body 32b, the third small moving body 32c, and the fourth small moving body 32d, which are connected to the first small moving body 32a, also move in conjunction with each other.

  Since each casting flask MF is engaged with the small moving body 32 by the engaging device 34, all the casting flasks MF arranged by the movement of the small moving body 32 move one pitch in the transport direction. The flask MF conveyed is moved by one pitch while maintaining the mutual clearance t2 by the engagement device 34. When each casting frame MF moves, the movement of each casting frame MF in the direction intersecting the transport direction is prevented by the flange portion 26b of the roller 26 contacting the side surface of the casting frame MF. Then, the most upstream casting flask MF is positioned at the upstream end position 2UE of the transport path 2 as shown in FIGS. 27 and 28. The most downstream casting frame MF is positioned at the carry-out position COP.

Next, the control device advances the piston rods 36a of all the air cylinder devices 36 in the stopped state maintaining device 37. All the aligned flasks MF are engaged by the stopped state maintaining device 37.
Next, the control device retracts the piston rod 36a of the air cylinder device 36 of the engagement device 34, and releases the engagement by the engagement device 34 with respect to all the aligned casting flasks MF. On the downstream side, the casting flask MF positioned at the carry-out position COP is transported at a right angle to the transport path 2 in the mold matching device TA. In the conveyance in the mold matching device TA, the casting frame MF is moved in the direction opposite to the engagement by the stopped state maintaining device 37, so that the engagement by the stopped state maintaining device 37 is released. Then, the upper and lower molds are matched by a matching device TA. The upper and lower molds matched with each other are placed on a platen trolley (not shown) and conveyed to the next pouring step. On the upstream side, a new flask MF is positioned at the carry-in position CIP in the flask separator SD. The new casting flask MF engages with the stopped state maintaining device 37 when being loaded in the direction in which it engages with the stopped state maintaining device 37.

Next, the control device drives the electric motor 52 with a reducer to move all the small moving bodies 32 to the upstream side by one pitch (return path).
Next, the control device advances the piston rod 36a of the air cylinder device 36 of the engagement device 34 to engage the aligned casting flasks MF including the new casting flask MF carried into the carry-in position CIP. Engage with.
Hereinafter, it repeats similarly.

The casting flask conveying device 1 of the first embodiment is engaged with the conveying path 2, the movable body 3 movably provided along the conveying direction, and the adjoining respective casting flasks MF so as to be aligned at a constant relative position. A plurality of engaging devices 34, a movable body driving device 5, and a engaging / disengaging device 36 that engages the engaging devices 34 with the plurality of casting molds MF in the outward path of reciprocating motion and disengages in the return path. ..
According to this, since the plurality of casting flasks MF are transported while the casting flasks MF are lined up at a fixed relative position, the casting flasks MF do not collide with each other during the transportation. Further, since all the flasks MF are conveyed at the same time, it is possible to perform prompt conveyance without requiring a low-speed conveyance region for closing the gap at the start of conveyance and a chasing time.

  Further, the moving body 3 is arranged on the side of the transport path 2, and the engagement device is provided with an opening MFa3 provided at a front end (downstream end) in the transport direction of the side surface of each casting frame MF or each casting. It engages with the opening MFa1 provided at the rear end (upstream end) of the side surface of the frame MF.

  According to this, the pit for installing the moving body 3 can be formed shallowly, and the moving body 3 can be easily arranged on the transport path 2. Further, it is possible to easily perform setting to prevent interference between various devices provided on the transport path 2 and the engagement device 34 provided on the moving body 3.

  For example, when the casting flask MF is loaded into the vertical casting flask reversing device ULR or is unloaded from the vertical casting flask reversing device ULR, as shown in FIG. 4, the length L of the vertical casting flask reversing device ULR extending in the transport direction is exceeded. Also, the opening MFa3 at the front end and the opening MFa1 at the rear end of the casting frame MF can be set to project. As a result, the engaging device 34 engaged with the opening MFa1 at the rear end of the casting frame MF does not interfere with the vertical casting frame reversing device ULR during loading. Further, at the time of carrying out, the engagement device 34 engaged with the opening MFa3 at the front end portion of the casting frame MF does not interfere with the vertical casting frame reversing device ULR. In this way, a molding line that prevents interference between the devices provided on the transport path 2 and the engagement device 34 provided on the moving body 3 can be easily designed, and the manufacturing cost can be reduced.

Further, the moving body 3 is further provided with a falling prevention mechanism 35 that prevents the moving body 3 from falling due to a lateral load in a direction intersecting the transport direction.
According to this, the fall prevention mechanism 35 can prevent the moving body 3 from falling in a direction intersecting with the carrying direction, and the casting frame MF can be carried smoothly.

  In addition, the moving body 3 is provided with a plurality of small moving bodies 32a, 32b, 32c, 32d that are each provided with an engaging device 34 and are arranged in the carrying direction and are connected to each other. , 32b, 32c, 32d are driven by one moving body driving device 5.

  According to this, the plurality of small moving bodies 32a, 32b, 32c, 32d can be manufactured in accordance with the possible range of manufacture, transportation and arrangement. Then, by arranging the plurality of small moving bodies 32a, 32b, 32c, 32d in the transport direction, the moving body 3 having a length extending in parallel over the entire transport path 2 can be obtained. Further, even if a manufacturing error and a placement error occur with respect to the facing casting molds MF group, it can be easily adjusted by combining the small moving bodies 32. Further, since the plurality of flasks MF are moved by one moving body drive device 5, it is possible to significantly reduce the equipment cost.

Further, in the plurality of small moving bodies 32a, 32b, 32c, 32d, adjacent small moving bodies 32 are connected to each other via spherical bearings 331, 332.
According to this, the displacement generated between the adjacent small moving bodies 32 can be absorbed by the spherical bearings 331 and 332, and the respective engagement devices 34 can be correctly opposed to the respective casting flasks MF.

Further, it further includes a stopped state maintaining device 37 for maintaining the stopped state of each casting frame MF when the transportation of each casting frame MF is stopped.
According to this, when the transportation of the casting flask MF is stopped, the stopped state of each casting flask MF is maintained, so that even when the engagement device 34 is disengaged from the opening MFa of the casting flask MF. The MFs are held in a fixed relative position to each other. Therefore, the engagement device 34 of the moving body 3 that has moved on the return path can easily engage with the opening MFa of the casting frame MF.

Further, the engagement device 34 includes a shaft portion 341 having a rectangular cross section that can be engaged with the opening MFa of the casting frame MF formed by the rectangular opening.
According to this, the contact area of the shaft portion 341 of the engagement device 34 with respect to the opening MFa of the casting frame MF becomes large, and the wear resistance can be improved.

The engagement device 34 further includes a connecting portion 343 that connects two adjacent shaft portions 341, and the engagement / disengagement device 36 integrally engages and disengages the connected shaft portions 341.
According to this, since the two engaging / disengaging devices 36 can engage / disengage the two shaft portions 341, the number of engaging / disengaging devices 36 can be reduced and the manufacturing cost can be reduced.

Further, the transport path 2 includes a flange portion 26b or a side roller 127 that restricts movement of the casting frame MF in a direction intersecting the transport direction.
According to this, the side surface of the casting flask MF does not come into contact with the transport path 2, the life of the casting flask MF is improved, the frictional force during transport is reduced, and the driving force during transport is supplied with a small output. You can

Further, the casting flask transfer device 1 is provided with a core storage work area CSA in the middle of the transfer path 2, and in the core storage work area CSA, among the casting flasks MF placed on the transfer path 2, the lower casting flask is provided. A work deck WD is provided in which the height of the work floor surface on which the worker W who carries out the core storage work rides matches the height of the mold surface of the LMF.
According to this, a space for housing the moving body 3 can be secured under the work deck WD, and the core housing work can be easily performed.

(Second embodiment)
Next, a second embodiment of the flask conveying device according to the present invention will be described below with reference to FIGS. 29 and 30.
The flask conveying device 101 in the second embodiment is different from the first embodiment in the conveying path 102 and the cross direction regulating device. The other configurations are similar to those of the first embodiment, and thus the description thereof is omitted. The differences will be described in detail below.

  In the transport path 102 of the second embodiment, the pair of roller support members 125 extending along the transport direction are provided with a plurality of side rollers 127 at the upper end portion. Each side roller 127 is formed of, for example, a steel member into a cylindrical shape whose axial direction is shorter than the radial direction. Each side roller 127 is rotatably supported by a rotary shaft 127a fixed to the upper end of the roller support member 125 so as to extend in the vertical direction. The side rollers 127 are arranged between the rollers 126 (described later) adjacent to each other so as to be staggered with the rollers 126. The side rollers 127 facing each other along the direction perpendicular to the transport direction are, for example, 0.5 mm to 1. The mutual intervals are set so that 0 mm gaps t3 are generated.

  Also in the second embodiment, a plurality of rollers 126 are provided inside the pair of roller support members 125. Each roller 126 extends in a direction orthogonal to the carrying direction on the roller support member 125, and is rotatably provided on each of rotary shafts 126a arranged along the carrying direction. The roller 126 in the second embodiment is formed of, for example, a steel member into a cylindrical shape whose axial direction is shorter than the radial direction. The cylindrical outer peripheral surface of the roller 126 is entirely a rolling surface, and the flange portion in the first embodiment is not formed.

As shown in FIG. 29, the roller 126 and the side roller 127 support the roller 126 by rolling the lower end of the casting frame MF, and the side rollers 127 roll and support both side surfaces of the casting frame MF. It is composed. The cross direction restricting device is configured by the side rollers 127.
In the flask conveying device 101 of the second embodiment, the side roller 127 rotates in contact with the side surface of the flask MF without being influenced by the rotation of the roller 126 during the conveyance of the flask MF from the side. Therefore, the regulation in the direction intersecting the transport direction can be smoothly performed.

Although the moving body 3 is provided on the side of the transport path 2, the invention is not limited to this. For example, it can be provided below the transport path 2.
Further, when all the flasks MF are conveyed, the gap t2 between the adjacent flasks MF is not always necessary. It suffices that the adjacent molding frames MF do not rub against each other, and for example, they may be sandwiched so that the clearance is zero at each engaging portion.
Although the spherical bearings 331 and 332 are provided on both sides of the connection device main body 33a1 in the transport direction, the present invention is not limited to this. For example, the upstream connecting protrusion of the moving body 3 and the downstream connecting protrusion of the adjacent moving body may be connected via a spherical bearing.

  The present invention is not limited to the embodiments described above and shown in the drawings, and can be implemented with appropriate changes without departing from the scope of the invention.

1, 101 ... Casting frame transfer device, 2, 102 ... Transfer path, 26b ... Collar part (intersection direction control device), 3 ... Moving body, 32 ... Small moving body, 33. ..Connecting devices, 331, 331 ... Spherical bearings, 34 ... Engaging devices (engaging parts), 35 ... Tilt prevention mechanism, 36 ... Air cylinder devices (engaging / disengaging devices), 37. ..Stopping state maintaining device, 5 ... Moving body driving device, 127 ... Side rollers (intersection direction restricting device), MF ... Casting frame, MFa ... Opening (engaged portion), MFb. ..Openings (engaged parts)

Claims (10)

A flask feeder for transporting a plurality of flasks each provided with an engaged portion,
A transport path for transporting the plurality of casting frames side by side along the transport direction,
A moving body that extends in parallel to the transport path and is movably provided along the transport direction;
A plurality of engaging portions that are provided on the movable body and that engage with each of the engaged portions so that each of the adjoining flasks are arranged at a constant relative position,
A moving body drive device for reciprocating the moving body along the carrying direction;
An engagement / disengagement device that engages the plurality of engaging portions with the engaged portion in the outward path of the reciprocating motion and disengages in the return path.
A flask conveying device equipped with. The moving body is arranged laterally of the transport path,
The said engaging part engages with the said to-be-engaged part provided in the front end part in the said conveyance direction of the side surface of each said flask, or the rear end part of the side surface of each said flask. Casting frame transfer device.   The casting flask transfer device according to claim 2, wherein the moving body is further provided with a falling prevention mechanism for preventing the moving body from falling due to a lateral load in a direction intersecting the transfer direction.   Each of the moving bodies includes a plurality of small moving bodies that are provided with the engaging portion and that are arranged along the transport direction and are connected to each other, and the plurality of small moving bodies drive one moving body. The flask feeder according to any one of claims 1 to 3, which is driven by a device.   The flask moving apparatus according to claim 4, wherein the small moving bodies adjacent to each other of the plurality of small moving bodies are connected to each other via spherical bearings.   The flask feeder according to any one of claims 1 to 5, further comprising a stopped state maintaining device that maintains a stopped state of each of the flasks when the transport of the flasks is stopped.   The casting according to any one of claims 1 to 6, wherein the engaging portion includes a shaft portion having a rectangular cross-section that is engageable with the engaged portion formed by a rectangular opening. Frame transfer device. The engaging portion further includes a connecting portion that connects two adjacent shaft portions,
The flask feeder according to claim 7, wherein the engaging / disengaging device integrally engages / disengages the connected shaft portions.   The flask conveying apparatus according to any one of claims 1 to 8, wherein the conveyor path includes an intersecting direction restricting device that restricts movement of the flask in a direction intersecting the conveying direction. The flask transportation device comprises a core storage work area in the middle of the transportation path,
In the core storage work area, the height of the work floor on which the operator who carries out the core storage work is mounted is the height of the mold surface of the lower mold among the molds placed on the transport path. The flask carrier according to any one of claims 1 to 9, which is provided with a matching work deck.

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