JP7104412B2 - Casting frame transfer device - Google Patents

Description

The present invention relates to a casting frame transfer device that conveys a plurality of casting frames on a molding line.

Conventionally, in a molding line, a plurality of casting frames are continuously arranged on a transport path, and are sandwiched from the upstream side and the downstream side by one pitch corresponding to the length of one casting frame in the transport direction. Is transported. When the plurality of cast frames conveyed in this way are intermittently conveyed, they may collide with each other between adjacent cast frames to generate an impact. In order to prevent such collisions between the cast frames, a low-speed transport region for closing the gap is provided at the start of transport to regulate the formation of a gap between adjacent cast frames. In addition, it is necessary to always have a gap during transportation to prevent contact between the casting frames.

Patent Document 1 describes a device for avoiding collision of molds by sequentially transporting the molds with a gap between the molds.

JP-A-2002-205145

However, in Patent Document 1, a plurality of drive units driven by rollers must be continuously provided for each region corresponding to one mold, resulting in high manufacturing cost. Further, since the molds are sequentially conveyed with a gap between the molds, a follow-up time corresponding to the number of casting frames is required, and there is a problem that the total transfer work time becomes long.

An object of the present invention is to provide a cast frame transfer device capable of preventing collisions between cast frames, reducing manufacturing cost, and performing transfer quickly.

The cast frame transport device according to the present invention is a cast frame transport device for transporting a plurality of cast frames each provided with an engaged portion, and transports the plurality of cast frames side by side along a transport direction. A moving body extending in parallel with the road and the transport path and provided so as to be movable along the transport direction, and the adjacent casting frames provided on the moving body so as to be lined up at a fixed relative position. A plurality of engaging portions that engage with each of the engaged portions, a moving body driving device that reciprocates the moving body along the transport direction, and the plurality of engaging portions are attached to the engaged portions. On the other hand, it is provided with an engagement / disengagement device that engages in the outward path of the reciprocating motion and disengages in the return path.

According to this, since the plurality of cast frames are transported by arranging the cast frames at a fixed relative position, the cast frames do not collide with each other during the transport. Further, since all the cast frames are conveyed at the same time, it is possible to quickly convey the frame without the need for a low-speed transfer area and a follow-up time for closing a gap at the start of transfer.

It is a top view which shows the outline of the casting frame transfer apparatus of 1st Embodiment which carried out this invention. FIG. 2 is a sectional view taken along line II-II in FIG. FIG. 3 is a sectional view taken along line III-III in FIG. It is a top view which shows the vicinity of the core work area on the downstream side enlarged. It is a top view which shows the vicinity of the mold molding apparatus on the upstream side enlarged. It is a side view which shows the vicinity of the core work area on the downstream side in an enlarged manner. It is a side view which shows the vicinity of the mold molding apparatus on the upstream side in an enlarged manner. It is sectional drawing of VIII-VIII in FIG. It is sectional drawing of IX-IX in FIG. FIG. 5 is a cross-sectional view taken along the line XX in FIG. It is a top view which shows a partial cross section of a casting frame. It is a side view of a casting frame. It is a partial front view which shows the casting frame by a partial cross section. It is a figure which shows the moving body moving path in cross section. It is a figure which shows the fall prevention mechanism. It is an enlarged view which shows the wheel for vertical load and the wheel for horizontal load of a moving body. It is a top view which shows the connection device. It is sectional drawing which shows the connection device. It is an enlarged view which shows the connection structure of a connection device in cross section. It is a top view which shows the 1st engaging device. It is a side view which shows the 1st engaging device. It is a front view which shows the engaging device with a partial cross section. It is a top view which shows the 2nd engaging device. It is a top view which shows the 3rd engaging device. It is a top view which shows the 4th engaging device. It is a top view which shows the 5th engaging device. It is a top view which shows the state which the casting frame is conveyed to the downstream side in the casting frame conveying apparatus. It is a side view which shows the state which the casting frame is conveyed to the downstream side in the casting frame conveying apparatus. It is a front view which shows the crossing direction regulation device in 2nd Embodiment. It is a side view which shows the crossing direction regulation device in 2nd Embodiment.

(First Embodiment)
The first embodiment in which the casting frame transfer device 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 overview of the entire molding line ML including the casting frame transfer device 1 according to the present invention. In the present specification, the direction in which the casting frame MF is transported along the transport path 2 of the molding line ML is referred to as a “transport direction”. The transport of the casting frame MF is likened to the flow of water, and the side that becomes the base point of transport in the molding line ML is called the "upstream side", and the side that becomes the end point of transport is called the "downstream side". In the transport direction, the upstream direction is referred to as "rear" and the downstream direction is referred to as "forward". Assuming a center line extending in the transport direction of the transport path, 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 frame 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, a engaging / disengaging device 36, and a stopped state maintaining device 37. The cast frame MF transported by the cast frame transport device 1 is provided with engaged portions (openings MFa, MFb) described later. As shown in FIG. 2, the molding line ML includes a casting frame separating device SD, a casting frame inner surface cleaning device CA, a mold molding device CM, a sand cutter device SC, an upper and lower casting frame reversing device ULR, and a core storage operation from the upstream side. An area CSA, an upper casting frame reversing device UR, and a mold matching device TA are provided. The molding line ML is provided with a surface plate carriage transport line PL for transporting the surface plate carriage on which the stacked molds are placed.

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

The support column 23 is formed of, for example, a hollow iron member having a rectangular cross section. A plurality of columns 23 are arranged along the transport direction. Beam members 24 are laid horizontally in directions 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 on the outside of the upper end portion of each support column 23 in a direction orthogonal to the transport direction. A plurality of rollers 26 are provided inside the paired roller support members 25.

Each roller 26 is formed in a disk shape by, for example, a steel member. Each roller 26 extends in a direction orthogonal to the transport direction in the roller support member 25, and is rotatably provided on a rotation axis (not shown) arranged along the transport direction. Each roller 26 includes a rolling surface 26a that rolls in contact with the bottom surface of the casting frame MF, and a crossguard portion 26b that is continuous with the rolling surface 26a and projects radially on the outer outer circumference of the roller 26 (). (See FIG. 8). The crossguard portion 26b constitutes an intersection direction regulating device by contacting the inner side surface with the side surface of the casting frame MF.

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

(Mobile)
The moving body 3 serves as an intermediary means for collectively transporting a plurality of cast frame MFs along the transport path 2. As shown in FIGS. 1 and 3, the moving body 3 extends on the side of the carrying path 2 in parallel with the carrying path 2, and is provided on the moving body moving path 31 (described later) provided in parallel with the carrying path 2. Is 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 for connecting the small moving bodies 32, and an engaging device 34 as an engaging portion.

As shown in FIG. 1, the plurality of small moving bodies 32 are composed of four small moving bodies (first to fourth small moving bodies 32a, 32b, 32c, 32d from the downstream side in the transport direction) in the present embodiment, for example. Has been).
The first to fourth small moving bodies 32a, 32b, 32c, 32d have a length in the transport direction and a connecting portion for connecting the connecting devices 33 arranged between each other (upstream connecting protrusion / downstream connecting protrusion (described later)). ) Is different, and the 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 is a first small moving body main body 32a1 and a first small moving body main body formed of a square steel pipe having a rectangular cross section. It includes a vertical load wheel 322 and a lateral load wheel 323 provided in 32a1, a fall prevention mechanism 35, an engaging device 34, and a connecting device 33 for connecting to the second small moving body 32b. The first small moving body main body 32a1 is formed in a rectangular cuboid shape with a length corresponding to three cast frame MFs continuously arranged in the transport path 2.

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

As shown in FIG. 6, an upstream connection protrusion 32b2 similar to the first small moving body 32a1 is projected toward the third small moving body 32c at the upstream end of the second small moving body 32b1. A similar downstream connection protrusion 32b3 is projected toward the first small moving body 32a at the downstream end of the second small moving body main body 32b1.

As shown in FIG. 7, an upstream side upper protrusion 32c2 is provided so as to project upward from a position biased toward the transport path side on the upper surface of the upstream end portion of the third small moving body main body 32c1. 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 in which the long side of the 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 in the upstream upper protrusion 32c2. At the downstream end of the third small moving body main body 32c1, a downstream connecting protrusion 32c3 similar to the downstream connecting protrusion 32b3 of the second small moving body main body 32b1 is provided.

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

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

(Movement path)
As shown in FIGS. 6, 7, 8 and 14, the moving body moving path 31 is a moving path in which the moving body 3 moves along the transport direction, and the moving path base portion 311, the moving path support column 312, It includes a rail support member 313 and a rail 314. For example, a plurality of movement path foundation portions 311 extend in a direction perpendicular to the transport direction by an I-shaped steel member, and a plurality of (16 in this embodiment) are arranged on the floor surface along the transport direction. Has been done. Each movement path foundation portion 311 is fixed to the floor surface via bolts and nuts (not shown). At the end of each movement path foundation portion 311 on the transport path 2 side, movement path columns 312 are erected, respectively.

Each moving path column 312 is formed of, for example, a rectangular hollow steel member. Each moving path strut 312 fixedly supports a rail supporting member 313 extending along the transport direction at the upper end portion. The rail support member 313 is formed of, for example, an I-shaped steel member. The rail support member 313 is not provided in the portion corresponding to the moving body driving device 5 or the molding device CM, which will be 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 on the upper surface of the rail support member 313. The rail 314 is set from the first rail to the fourth rail 314a, 314b, 314c, 314d according to the lengths used by the first to fourth small moving bodies 32a, 32b, 32c, 32c for reciprocating movements, respectively. (See FIGS. 6 and 7).

In the present embodiment, the first rail 314a is provided in a range in which the vertical 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. In the second rail 314b, the vertical load wheels 322 and the lateral load wheels 323 on the rear side of the first small moving body 32a reciprocate from the vertical load wheels 322 and the lateral load wheels 323 in front of the third small moving body 32c. It is provided in the range used in motion. The third rail 314c is provided in a range in which the vertical load wheel 322 and the lateral load wheel 323 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 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.

(Fall prevention mechanism)
As shown in FIGS. 9 and 15, the fall prevention mechanism 35 prevents the moving body 3 from falling in a direction intersecting the transport direction by receiving a lateral load. Further, as shown in FIGS. 4 and 5, the fall 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. It is provided at each of the positions. The fall prevention mechanism 35 includes a foundation support 351, a cane support rail 352, a support cane 353, a horizontal roller 354, and a mounting member 355.

A plurality of foundation struts 351 are vertically projected from the moving path foundation portion 311 side by side on the outside of each moving path stanchion 312 of the moving body moving path 31. The foundation support 351 is formed to be thinner and lower in height than the moving path support 312 than, for example, a rectangular hollow steel member. A cane support rail 352 is laid horizontally on the upper end of each foundation support 351.

The cane support rail 352 is from the first cane support rail to the fourth cane support rail 352a, 352b, corresponding to the lengths used by the first to fourth small moving bodies 32a, 32b, 32c, 32c for reciprocating movements, respectively. It is set up to 352c and 352d (see FIGS. 6 and 7).
As shown in FIG. 9, the cane support rails 352a, 352b, 352c, and 352d are provided in parallel on the lower side opposite to the transport path 2. Each cane support rail 352a, 352b, 352c, 352d is formed of, for example, a member made of a shaving material having a rectangular cross section. A support cane 353 is supported on each of the cane support rails 352a, 352b, 352c, and 352d.

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

The mounting member 355 is formed of an I-shaped steel member cut to a predetermined size. One end face of the mounting member 355 is fixed to the side surface of each of the small moving bodies 32a, 32b, 32c, 32d, and the other end face of the mounting 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 a flange-shaped support portion 353b. A horizontal roller 354 is rotatably supported on each support shaft 353a. The horizontal roller 354 is formed of, for example, a steel member in a columnar shape whose axial direction is shorter than the radial direction. The paired horizontal rollers 354 sandwich the cane support rail 352 from both sides and roll while contacting both side surfaces of the cane support rail 352.

(Mobile drive device)
As shown in FIGS. 6 and 10, the moving body driving device 5 is provided between the first rail 314a and the second rail 314b in the moving body moving path 31 corresponding to 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. The 32c and 32d are reciprocated. The moving body driving device 5 includes a foundation support portion 51, an electric motor 52 with a speed reducer, and a pinion and rack mechanism 53.

The foundation 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 foundation support rod 51a and a motor support base 51b. ing. The foundation support rod 51a is formed of, for example, a rectangular hollow steel member, and connects the lower portions of the opposite moving path columns 312, respectively. The motor support 51b is formed of, for example, a steel flat plate member laid horizontally between the opposing moving path columns 312. 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 51b.

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

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

As shown in FIGS. 20 to 26, the engaging device 34 includes five types of engaging devices 34, the first engaging device to the fifth engaging device 34a, 34b, 34c, 34d, and 34e, and the transport path 2 It is selected and used corresponding to a plurality of devices (molding devices, etc.) provided in. The first engaging device 34a shown in FIG. 20 and the second engaging device 34b shown in FIG. 23 are arranged on the first small moving body 32a.

The first engaging device 34a is a guide portion that allows the two shaft portions 341 that engage with the opening MFa of the casting frame MF and the two shaft portions 341 to be slidable in the horizontal direction at predetermined intervals. It is equipped with 342. The guide portion 342 includes two slide shafts 342a and two guide cylinders 342b. Each guide cylinder 342b is formed in a circular cylinder shape, penetrates the first small moving body 32a in a direction perpendicular to the transport direction, and is fixed to the first small moving body main body 32a1. A slide shaft 342a is inserted into each guide cylinder 342b so as to be able to advance and retreat.

The end portions of the two slide shafts 342a on the transport path side are integrally connected by a connecting portion 343 extending in the transport direction. On the upper surface of the connecting portion 343, shaft portions 341 protruding 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 at positions above the slide shaft 342a by the amount fixed to the upper surface of the connecting portion 343, respectively. The two shaft portions 341 are also integrally connected by the connecting portion 343. Each shaft portion 341 is formed to have a rectangular cross section.

The connecting portion 343 is connected to the piston rod 36a of the air cylinder device 36 as an engagement / disengagement 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 the casting frame MF. The air cylinder device 36 communicates with 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 control device (not shown).

The second engaging device 34b is different from the first engaging device 34a in that the shaft portion 341 on the downstream side (upper side in FIG. 23) is not provided. The third engaging device 34c is different from the first engaging 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 engaging device 34d differs from the first engaging device 34a in that it has an upstream side unevenly distributed connecting portion 344 that unevenly distributes the two connected shaft portions 341 to the upstream side. As shown in FIG. 26, the fifth engaging device 34e is the same as the downstream unevenly distributed connecting portion 3a in which the two connected shaft portions 341 are unevenly distributed on the downstream side, and therefore the same reference numerals are given and the description thereof will be omitted. ..

The shaft portion 341 of each engaging device 34 is adapted to engage with any one opening MFa of each casting frame MF, and each engaging device 34a, 34b, 34c, 34d, 34e corresponds to the opening. When engaged with MFa, a gap t2 of, for example, 20 mm is provided between adjacent casting frame MFs (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 32b arranged between the first small moving body 32a and the second small moving body 32b. It has a second connecting device 33b arranged between the small moving body 32c and a 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 main 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 main body 33a1 is formed of, for example, a rolled steel material for general structure into a thin flat plate extending in the transport direction, and has central axes 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 is formed with locking ribs 3351 protruding inward in the radial direction on the inner circumference of the upper edge. 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 formed to be shorter than the width of the inner ring 331b. Since the first and second spherical bearings 331 and 332 are known techniques, description thereof will be omitted.

The first connecting shaft 333 is inserted and fixed to the connection hole 324 of the upstream connecting protrusion 32a2 in the first small moving body main body 32a1 and the inner ring 331b of the first spherical bearing 331. The first connecting shaft 333 is provided with a crossguard-shaped head 333a at an end supported by the first spherical bearing 331. The outer diameter of the head 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. At the end of the first connecting shaft 333 opposite to the head 333a, female screw holes 333b into which bolts B are screwed are formed at, for example, three places. A disk-shaped presser plate 337 is arranged at the opposite end. The presser 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 formed 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 three bolts B. 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 main body 33a1 side comes into contact with the end of the inner ring 331b. Due to the axial width of the inner ring 331b being wider than the width of the outer ring 331a, the upstream side connecting protrusion 32a2 and the first connecting device main body 33a1 are connected with a gap t1. The first connecting device 33a is positioned in all directions 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 between the inner ring 331b and the outer ring 331a of the first spherical bearing 331. Absorbs deviations 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 connection protrusion 32b3 of the second small moving body main body 32b1, and thus the description thereof will be omitted.
Further, since the second connecting device 33b is the same as the first connecting device 33a, the description thereof will be omitted.

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

(Stopped state maintenance device)
The stop state maintaining device 37 maintains the stop position of each cast frame when each cast frame MF conveyed on the transport path 2 stops. As shown in FIGS. 4 and 5, the stopped state maintaining devices 37 are fixed at seven locations on the side opposite to the moving body 3 in the transport path 2. The stopped state maintaining device 37 is configured in the same manner as the first engaging device 34a and the air cylinder device 36.
The air cylinder device 36 of the stopped state maintaining device 37 communicates with the air supply source shown in the figure. 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 the control device (not shown).

Further, in each casting frame MF, an opening MFb similar to the opening MFa as an engaged portion is formed on the side surface of each casting frame MF on the stop state maintaining device 37 side. The opening MFb is provided at three positions symmetrically with respect to the center line extending in the transport direction of the casting frame MF. Two adjacent casting frame MFs in a stopped state are fixed by one first engaging device 34a, respectively. Each casting frame MF is maintained in a stopped state by providing, for example, a gap t2 of 20 mm between adjacent casting frame MFs.
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.

(Casting frame separator)
The casting frame separating device SD separates the casting frame MF in a state where the mold (not shown) is extracted and stacked by the mold disassembling device (not shown) into the upper casting frame UMF and the lower casting frame LMF. Since the casting frame separator SD is a known technique, the description thereof will be omitted. The upper casting frame UMF and the lower casting frame LMF are alternately conveyed on the transport path 2, but in the present specification and drawings, except for cases where the upper casting frame reversing device is particularly limited. , It shall be shown as a casting frame MF without distinction.

(Cast frame inner surface cleaning device)
The casting frame inner surface cleaning device CA removes the casting sand adhering to the inner surface of the casting frame MF. Since the casting frame inner surface cleaning device CA is a known technique, the description thereof will be omitted. Examples of the casting frame inner surface cleaning device include the casting frame inner surface cleaning device described in Japanese Patent Application Laid-Open No. 55-133866.

(Molding equipment)
The mold molding apparatus CM molds a mold by putting casting sand into a polymerization frame composed of an upper casting frame UMF, a lower casting frame LMF, a model surface plate (not shown), and the like, and further squeezing. Since the mold molding apparatus CM is a known technique, the description thereof will be omitted. Examples of the mold molding apparatus include the mold molding apparatus described in Japanese Patent Application Laid-Open No. 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 will be omitted. As the sand cutter device, for example, the sand cutter device described in Japanese Patent Application Laid-Open No. 2011-255419 can be mentioned.

(Upper and lower casting frame reversing device)
The vertical casting frame reversing device ULR flips the upper mold and the lower mold pouring space formed by extracting the model downward so as to face upward. Since the upper and lower casting frame reversing device ULR is a known technique, the description thereof will be omitted. As the vertical casting frame reversing device, for example, the vertical casting frame reversing device described in Japanese Patent Application Laid-Open No. 2017-0240668 can be mentioned.

(Core storage work area)
The core storage work area CSA is an area for arranging the core in the lower mold as shown in FIGS. 4 and 9. The core storage work is performed manually. Work decks WD on which the worker W is boarded are provided on both sides of the transport path 2. Above the transport path 2, a crane CR for hooking and transporting the core is provided. The height of the upper surface of the lower casting frame (lower mold) LMF 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 casting frame LMF, the moving body 3 may be located on 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 casting frame LMF, the worker W needs to bend down, which makes it difficult to manually store the core. By matching the height of the upper surface of the lower casting frame LMF with the height of the work deck WD, the moving body 3 can be stored under the work deck WD, and the core insertion work can be carried out safely and quickly.

(Upper casting frame reversing device)
The upper casting frame reversing device UR inverts the upper mold (upper casting frame UMF) with the pouring space facing upward in order to overlap with the lower mold (lower casting frame LMF). Since the upper casting frame reversing device UR is a known technique, the description thereof will be omitted.

(Type matching device)
The mold matching device TA completes the mold by superimposing the upper mold on the lower mold and enables pouring. Since the type matching device TA is a known technique, the description thereof will be omitted.

(Operation)
Next, the operation of the casting frame transfer device configured as described above will be described below with reference to FIGS. 1, 27 and 28.
First, the most upstream casting frames of the plurality of casting frame MFs arranged in a straight line are positioned at the carry-in position CIP. The arranged most downstream casting frames are positioned at the downstream end position 2DE of the transport path 2.

The control device is in a state in which the piston rods 36a of all the air cylinder devices 36 are advanced in the stopped state maintaining device 37. As a result, all the cast frame MFs are individually in a state in which the shaft portion 341 of the stop state maintaining device 37 is engaged with the opening MFb. Further, in the engaging device 34, the piston rods 36a of all the air cylinder devices 36 are in a state of being advanced. As a result, all the cast frame MFs are in a state in which the shaft portion 341 of the engaging device 34 is individually engaged with the opening MFa. Each of the cast frames arranged by the stopped state maintaining device 37 and the engaging device 34 is stopped in a state where a gap t2 is generated between the adjacent casting frames.

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

Since each casting frame MF is engaged with the small moving body 32 by the engaging device 34, all the casting frame MFs arranged by the movement of the small moving body 32 move by one pitch in the transport direction. The cast frame MF to be conveyed moves by one pitch while maintaining the gap t2 between them by the engaging device 34. When each casting frame MF moves, the movement in the direction in which each casting frame MF intersects in the transport direction is prevented by the collar portion 26b of the roller 26 coming into contact with the side surface of the casting frame MF. Then, as shown in FIGS. 27 and 28, the most upstream cast frame MF is positioned at the upstream end position 2UE of the transport path 2. 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 stop state maintaining device 37. All the arranged cast frame MFs are engaged by the stop state maintaining device 37.
Next, the control device retracts the piston rod 36a of the air cylinder device 36 of the engaging device 34, and disengages the engaging device 34 from all the arranged casting frame MFs. On the downstream side, the casting frame MF positioned at the carry-out position COP is conveyed at right angles to the transfer path 2 in the mold matching device TA. In the transfer in the mold matching device TA, the casting frame MF is moved in the direction opposite to the engagement by the stop state maintenance device 37, so that the engagement by the stop state maintenance device 37 is released. Then, the upper and lower molds are molded by the mold matching device TA. The upper and lower molds that have been matched are placed on a surface plate cart (not shown) and transported to the next pouring process. On the upstream side, a new casting frame MF is positioned at the carry-in position CIP in the casting frame separating device SD. The new casting frame MF engages with the stopped state maintaining device 37 when it is carried in the direction of engaging with the stopped state maintaining device 37.

Next, the control device drives the electric motor 52 with a speed reducer and moves 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 engaging device 34, and engages the arranged casting frame MF including the new casting frame MF carried into the carry-in position CIP. Engage in.
The same applies hereinafter.

In the casting frame conveying device 1 of the first embodiment, the conveying path 2 and the moving body 3 provided so as to be movable along the conveying direction are engaged with each adjacent casting frame MF so as to be lined up at a constant relative position. It is provided with a plurality of engaging devices 34, a moving body driving device 5, and an engaging / disengaging device 36 that engages the engaging device 34 with the plurality of casting frame MFs on the outward path of the reciprocating motion and disengages the engaging device 34 on the return path. ..
According to this, since the plurality of cast frame MFs are transported by arranging the cast frame MFs in a fixed relative position, the cast frame MFs do not collide with each other during the transport. Further, since all the cast frame MFs are conveyed at the same time, it is possible to quickly convey the entire cast frame MF without the need for a low-speed transfer area and a follow-up time for closing a gap at the start of transfer.

Further, the moving body 3 is arranged on the side of the transport path 2, and the engaging device is an opening MFa3 or each cast provided at a front end portion (downstream side end portion) of the side surface of each casting frame MF in the transport direction. It engages with the opening MFa1 provided at the rear end portion (upstream side end portion) 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 with respect to the transport path 2. Further, it is possible to easily set to prevent interference between the various devices provided in the transport path 2 and the engaging device 34 provided in the moving body 3.

For example, when the casting frame MF is carried into the upper and lower casting frame reversing device ULR or carried out from the upper and lower casting frame reversing device ULR, as shown in FIG. 4, from the length L of the upper and lower casting frame reversing device ULR extending in the transport direction. 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 protrude. 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 upper and lower casting frame reversing device ULR at the time of carrying in. Further, at the time of carrying out, the engaging device 34 engaged with the opening MFa3 at the front end of the casting frame MF does not interfere with the upper and lower casting frame reversing device ULR. In this way, it is possible to easily design a molding line that prevents interference between the various devices provided in the transport path 2 and the engaging device 34 provided in the moving body 3, and it is possible to reduce the manufacturing cost.

Further, the moving body 3 is further provided with a fall prevention mechanism 35 for preventing the moving body 3 from falling in a direction intersecting the transport direction by receiving a lateral load.
According to this, the fall prevention mechanism 35 can prevent the moving body 3 from falling in the direction intersecting the transport direction, and can smoothly transport the casting frame MF.

Further, the moving body 3 is provided with an engaging device 34, and is composed of a plurality of small moving bodies 32a, 32b, 32c, 32d arranged along the transport direction and connected to each other, and the plurality of small moving bodies 32a. , 32b, 32c, 32d are driven by one moving body driving device 5.

According to this, a plurality of small moving bodies 32a, 32b, 32c, 32d can be manufactured according to a range in which manufacturing, transportation, and arrangement are possible. 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 an arrangement error occur with respect to the facing cast frame MF groups, they can be easily adjusted by combining the small moving bodies 32. Further, since the plurality of cast frame MFs are moved by one moving body driving device 5, the equipment cost can be significantly reduced.

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 and 332, respectively.
According to this, the displacement generated between the adjacent small moving bodies 32 can be absorbed by the spherical bearings 331 and 332, and each engaging device 34 can be correctly opposed to each casting frame MF.

Further, a stop state maintaining device 37 for maintaining the stopped state of each casting frame MF when the transportation of each casting frame MF is stopped is further provided.
According to this, when the transport of the casting frame MF is stopped, the stopped state of each casting frame MF is maintained, so that even when the engaging device 34 is disengaged from the opening MFa of the casting frame MF, each casting frame The MFs are held in constant relative positions with each other. Therefore, the engaging device 34 of the moving body 3 moved on the return path can easily engage the casting frame MF with the opening MFa.

Further, the engaging 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 engaging device 34 with respect to the opening MFa of the casting frame MF becomes large, and the wear resistance can be improved.

Further, the engaging device 34 further includes a connecting portion 343 that connects two adjacent shaft portions 341, and the engaging / disengaging device 36 integrally engages and disengages the connected shaft portions 341.
According to this, since the two shaft portions 341 can be engaged and disengaged by one engaging / disengaging device 36, the number of the engaging / disengaging devices 36 can be reduced and the manufacturing cost can be reduced.

Further, the transport path 2 includes a collar portion 26b or a side roller 127 that regulates the movement of the casting frame MF in a direction intersecting the transport direction.
According to this, the side surface of the cast frame MF does not come into contact with the transport path 2, the life of the cast frame MF is improved, the frictional force during transport is reduced, and the driving force during transport is covered by a small output. Can be done.

Further, the casting frame transfer device 1 is provided with a core storage work area CSA in the middle of the transfer path 2, and the core storage work area CSA is the lower casting frame of the cast frame MF mounted on the transfer path 2. A work deck WD is provided in which the height of the mold surface of the LMF matches the height of the work floor on which the worker W performing the core storage work is boarded.
According to this, a space for storing the moving body 3 can be secured under the work deck WD, and the core storage work can be easily performed.

(Second Embodiment)
Next, a second embodiment of the casting frame transfer device according to the present invention will be described below with reference to FIGS. 29 and 30.
In the casting frame transport device 101 of the second embodiment, the transport path 102 and the crossing direction regulating device are different from those of the first embodiment. Since other configurations are the same as those of the first embodiment, the description thereof will be 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 ends thereof. Each side roller 127 is formed of, for example, a steel member in a columnar shape whose axial direction is shorter than the radial direction. Each side roller 127 is rotatably supported by a rotation shaft 127a fixed so as to extend vertically to the upper end portion of the roller support member 125. The side rollers 127 are arranged so as to be staggered with the rollers 126 at positions between the rollers 126 (described later) adjacent to each other. The side rollers 127 facing each other along the direction perpendicular to the transport direction are, for example, 0.5 mm to 1. The distance between them is set so that a gap t3 of 0 mm is formed in each case.

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

As shown in FIG. 29, the roller 126 and the side roller 127 are supported by the roller 126 rolling at the lower end of the casting frame MF, and the side rollers 127 rolling and supporting both side surfaces of the casting frame MF. It is composed. The crossing direction regulating device is composed of side rollers 127.
In the casting frame conveying device 101 of the second embodiment, in the conveying by engagement from the side of the casting frame MF, the side rollers 127 rotate in contact with the side surface of the casting frame MF without being affected by the rotation of the rollers 126. Therefore, it is possible to smoothly regulate the direction intersecting the transport direction.

The moving body 3 is provided on the side of the transport path 2, but the present invention is not limited to this. For example, it can be provided below the transport path 2.
Further, when transporting all the casting frame MFs, the gap t2 between the adjacent casting frame MFs is not always necessary. Adjacent casting frame MFs need not be rubbed against each other. For example, they may be sandwiched at each engaging portion so that the gap is zero.
Spherical bearings 331 and 332 are provided on both sides of the connecting device main body 33a1 in the transport direction, but 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 embodiment described above and shown in the drawings, and can be appropriately modified and implemented without departing from the gist.

1,101 ... Cast frame transfer device, 2,102 ... Transfer path, 26b ... Bearing (intersection direction regulation device), 3 ... Moving body, 32 ... Small moving body, 33. .. Connection device, 331, 331 ... Spherical bearing, 34 ... Engagement device (engagement part), 35 ... Fall prevention mechanism, 36 ... Air cylinder device (engagement / disengagement device), 37.・ ・ Stopped state maintenance device, 5 ・ ・ ・ Moving body drive device, 127 ・ ・ ・ Side roller (intersection direction regulation device), MF ・ ・ ・ Cast frame, MFa ・ ・ ・ Opening (engaged part), MFb ・・ ・ Opening (engaged part).

Claims (10)

It is a casting frame transfer device that conveys a plurality of casting frames each provided with an engaged portion.
A transport path for transporting the plurality of cast frames side by side along the transport direction, and
A moving body that extends in parallel to the transport path and is movably provided along the transport direction.
A plurality of engaging portions provided on the moving body and engaged with the engaged portions so that the adjacent casting frames are lined up at a fixed relative position.
A moving body driving device that reciprocates the moving body along the transport direction, and
An engagement / disengagement device that engages the plurality of engaging portions with the engaged portion on the outward path of the reciprocating motion and disengages the engaging portions on the return path.
Casting frame transfer device equipped with. The moving body is arranged on the side of the transport path.
The first aspect of claim 1, wherein the engaging portion engages with the front end portion of the side surface of each of the casting frames in the transport direction or the engaged portion provided at the rear end portion of the side surface of each of the casting frames. Cast frame transfer device. The casting frame transport device according to claim 2, wherein the moving body is further provided with a fall prevention mechanism for preventing the moving body from falling in a direction intersecting the transport direction by receiving a lateral load. Each of the moving bodies includes the engaging portion, and is composed of a plurality of small moving bodies arranged along the transport direction and connected to each other. The plurality of small moving bodies are driven by one moving body. The casting frame transport device according to any one of claims 1 to 3, which is driven by the device. The casting frame transfer device according to claim 4, wherein the plurality of small moving bodies are each connected to the adjacent small moving bodies via spherical bearings. The casting frame conveying device according to any one of claims 1 to 5, further comprising a stopped state maintaining device for maintaining the stopped state of each casting frame when the conveying of each casting frame 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 can be engaged with the engaged portion formed by a rectangular opening. Frame transfer device. The engaging portion further comprises a connecting portion that connects two adjacent shaft portions.
The casting frame transfer device according to claim 7, wherein the engagement / disengagement device integrally engages and disengages the connected shaft portions. The casting frame transporting device according to any one of claims 1 to 8, wherein the transport path includes an crossing direction regulating device that regulates the movement of the casting frame in a direction intersecting the transport direction. The casting frame transfer device is provided with a core storage work area in the middle of the transfer path.
In the core storage work area, the height of the work floor on which the worker performing the core storage work is boarded is set at the height of the mold surface of the lower casting frame among the casting frames placed on the transport path. The casting frame transfer device according to any one of claims 1 to 9, further comprising a matching working deck.

Images