JPS6117587B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention involves removing a cast product from a poured mold, cutting its sprues, weirs, etc., removing adhering molding sand and residual cores, and further This invention relates to a continuous processing method for cast products that automatically performs a series of operations such as reversing the product and transferring it to a transport device.

Conventionally, in order to transfer a cast product taken out of a poured mold to a transportation device such as a hanger conveyor after removing molding sand, etc. attached to sprues, weirs, etc.
First, the poured mold is pushed upward from the flask by a pusher plate, then pushed out by a pusher, etc., and placed onto a vibrating conveyor to remove deposits such as molding sand on the vibrating conveyor. A worker takes out the cast product from which the kimono has been removed, using a cast product removal rod with a hook-shaped tip, sets it in a weir folding device, cuts the sprue, weir, etc., and produces a processed cast product. The worker takes it out of the weir folding device again and transfers it to the circulating transportation device, but the cast product in the mold pushed out by the extrusion plate may be incomplete due to poor pouring or other accidents. , or if there is no such mold, transferring such defective molds to the regular mold processing line is not only inefficient, but also may cause various inconveniences in the molding sand recovery process and other post-processing processes. Furthermore, depending on the shape and size of the casting, it may be extremely difficult for an operator to remove the casting from the mold, attach it to the weir folding device, or remove it from the weir folding device. Moreover, the work environment is extremely poor and inefficient as it is carried out in an environment with intense noise and dust generation.Furthermore, the work of transferring the work to a transport device such as a hanger conveyor with good stability to a specified position is also carried out in the same environment as above. However, there are many disadvantages such as various difficulties, reduced work efficiency, falling of castings and other accidents.

In order to eliminate the above-mentioned drawbacks, the present invention automatically clamps the cast product from the mold to which it is sent by detecting the condition of the cast product as it is extruded from the flask, removes the weir, sprue, etc., and then shakes out the product. In addition, the casting is turned over and at the same time accurately positioned to ensure that it is transferred to a conveying device such as a hanger conveyor, and is adapted for post-processing processes such as automatic polishing. A method for continuous processing of cast products has been completed, which can easily process even complex cast products that are difficult to process, such as cast products with poor stability such as cylinder blocks.The embodiment shown in the drawings will be described in detail below.

As shown in FIGS. 1 and 3, 1 is a roller that sequentially conveys a flask 3 having a poured mold 3a placed on a surface plate 2 and placed on the floor of a foundry. A conveying device such as a conveyor, which is provided with a roller conveyor 5 equipped with a separation cylinder 4 in a direction intersecting the conveying device 1 at a surface plate removal position A in the middle of the installation location of the conveying device 1. The flask 3 that has been placed on the surface plate 2 and transported is
The separating cylinder 4 is pulled out by being locked by a locking plate 7 attached to the tip of the piston rod, separated from the surface plate 2, and sent to an empty frame conveying device 6 provided to intersect with the roller conveyor 5. It is configured so that it can be transferred to the starting point position B.
The remaining surface plate 2 is pushed by the subsequent surface plate and flask assembly that are sent on the transport device 1 and sent to the front side of the transport device 1. As shown in FIG. 2, a pusher cylinder 8 is provided in a direction intersecting the roller conveyor 5 at the starting point B, and a pusher plate 8a is attached to the tip of the piston rod. The flask 3 is moved from the starting point B to the empty flask conveying device 6.
The frame is fed into a frame breaking device 9 installed in the middle of the process, and the frame breaking device 9 places an extrusion plate 12 at the tip of a piston rod 11 of a vertical extrusion cylinder 10 held on a base. This is a structure in which the mold 3a is punched out by raising the piston rod 11 by operating the extrusion cylinder 10 and passing the extrusion plate 12 vertically through the flask 3 positioned on the empty frame conveying device 6. Further, a guide rod 13 is vertically provided on the extrusion plate 12, and is slidable on guide tubes 14 provided on both sides of the extrusion cylinder 10, so that the extrusion plate 12 can be moved up and down reliably. A casting detection device 16 for detecting the presence or absence of a casting 15 in the mold 3a or the quality of the pouring state is provided above the frame disassembling device 9 in an opposing state. In the device 16, a plurality of elevating cylinders 17 for detection are disposed on a horizontal frame 19a above a gate-shaped frame 19 that is erected from a foundation with the tips of their piston rods 18 facing downward, and the piston rods 18 are The piston rod 18 is vertically movable in correspondence with the positions of the plurality of cast products 15 in the mold 3a, and a switch abutment is provided at the tip of the piston rod 18 that protrudes upward from the lifting cylinder 17. 18a is fixed, and as the piston rod 18 moves up and down, the switch pad 18a comes into contact with a limit switch held on a frame (not shown).Moreover, at the time of detection, no pressurized fluid is applied to the up/down cylinder 17. The piston rod 18 is in a free state, and when its tip comes into contact with the casting 15 in the mold 3a that is being pushed up from below, the piston rod 18 is raised together with the casting 15 and the switch stopper 18a at the tip is brought into contact with the piston rod 18. is brought into contact with a limit switch (not shown) to confirm the existence and quality of the cast product and send a predetermined signal to the next process. Approximately on the side of the intermediate part between the frame unwinding device 9 and the casting detection device 16, there is a standby position of a weir folding device 23, which will be described later, which is provided adjacent to the opposite side of the mold 3a extruded from the flask 3. A pusher cylinder 21 that pushes out into a dump case 20 provided to be positioned below is attached to a gate-shaped frame 19.
It is rotatably supported on a horizontally projecting frame, and a push-out plate 22 is fixed to the tip of the piston rod, so that it can move forward and backward on the push-out plate 12. 23 is dump case 20
It is a weir folding device that extracts the cast product 15 from the mold 3a pushed in to the outside and cuts the weir, sprue, etc., and can run on the rail 25 installed at the upper end of the gate-shaped frame 24 erected from the foundation. trolley 26
is placed thereon, and the tip of a piston rod of a traveling cylinder 27 rotatably supported on the portal frame 24 is connected to one end of the trolley 26.
As shown in FIG.
7, the trolley 2 is configured to be able to advance and retreat between the casting product removal position C and the casting product transfer position 2 (described later) with an intermediate stop at the weir folding position E.
An elevating cylinder 26 is attached downward to the upper surface of the piston rod 29, and an elevating frame 30 is suspended from the tip of the piston rod 29.
At 0, there are guide rods 3 that are slidable on guide tubes 31 erected on both sides of the lifting cylinder 28.
The tip of the lifting frame 30 is fixed to ensure correct and smooth lifting and lowering.
On the bottom surface of the
3 and 33' are rotatably supported by rotary shafts 34 and 34' connected by tie rods (not shown), one end of a rotary arm (not shown) is fixed to one rotary shaft 34, and the other rotary arm At the end, the tip of a piston rod of a clamp cylinder 35 rotatably supported on the upper surface of the elevating frame 30 is rotatably connected via a pin or the like, and two pairs of rotary shafts 34, 34' are connected to the piston rod. Clamp claw 36,3
Two pairs of clamp claws 36, 36', which are fixed to the rotating shafts 34, 34' via the rotating arms and tie rods by the operation of the clamp cylinder 35, are attached to the bearings 33, 33. ', so that the cast product 15 in the mold 3a can be clamped, and the clamp claws 36, 3
At the tip of 6', an attachment having a shape corresponding to the surface shape of the cast product 15 is removably provided so that the cast product 15 can be clamped in a constant state. Further, a rotating shaft 37 is similarly supported by the lifting frame 30 between the rotating shafts 34 and 34'.
The middle part of a weir folding cutter 38 whose lower end faces the sprue side of the cast product 15 is rotatably supported, and the upper end of the weir folding cutter 38 is attached to a weir folding cylinder 39 provided on the lifting frame 30. The weir-folding cylinder 3 is pivotally connected to the tip of the piston rod.
9, the weir folding cutter 38 is rotated around the rotating shaft 37, and the sprue of the casting 15, which has been clamped and taken out by the clamp claws 36, 36', has its tip rotated by the rotation of the weir folding cutter 38. The weir is twisted and knocked down and broken at the weak point at the base of the sprue, and in this way the weir is removed along with the sprue. Further, one end of the bottom side of the dump case 20 is rotatably supported by a bearing 41 provided on the side surface of a frame 40 that is erected from the foundation, and furthermore, one end of the bottom side of the dump case 20 is rotatably supported by a bearing 41 provided on the side surface of a frame 40 that is erected from the foundation. The tip of a piston rod 44 of a dump cylinder 43 which is rotatably supported by a mounting base 42 provided therein is connected, and the cast product 15 is attached to the clamp claw 3.
The casting sand remaining in the dump case 30 after being taken out to the outside by the dump cylinder 43 moves the dump case 20 to the bearing 4.
By tilting the casting parts 1 to the center, they are discharged onto the side transport conveyor 45 and returned to the sand processing section.
A chute with upper and lower openings is provided at the weir folding position E where the weir folding of the cast product 15 taken out in step 3 is carried out, and a collection conveyor 47 faces below. It is designed to be transported outside for collection. Further, two branched conveyance paths 48, 48' extend radially from the casting transfer position N adjacent to the weir folding position E, and on each conveyance path 48, 48',
Cart 4 with cast parts holder 50, 50' installed on the upper surface
9 and 49' are placed so as to be freely movable, respectively, and at one end of each carriage 49 and 49' there is a cylinder 51 for transferring the cast product 15, which is rotatably pivoted on a frame erected from the foundation. The tips of the piston rods 51' are connected to each other, and are movable back and forth between the casting transfer position 2 and the shake-out device 53 for the next process, and each carriage 49, 49'
2 prevents the castings 15 from flying up, and each casting 15 transferred from the weir folding device 23 onto the casting receivers 50, 50' is moved by the vibrators 54, 54' and clamp cylinders 56, 56 of the shake-out device 53, which will be described later. The folding device 23 is placed parallel to the moving direction of the weir folding device 23 so as to be set in a direction perpendicular to . 53 is a shake-out device for removing core sand and other molding sand adhering to the cast product 15 by vibration, and includes a vibrator 54 and a clamp cylinder 55, and a vibrator 54' and a clamp cylinder 55', each pair facing each other. The castings are placed on U-shaped frames 56, 56', respectively, and transported to the shake-out device 53 by being placed on casting receivers 50, 50' on transport paths 48, 48'. Item 15 is the fourth
As shown in the figure, on both sides are a vibrator 54, a clamp cylinder 55 and a vibrator 54'.
and a clamp cylinder 55' are positioned opposite to the respective piston rods of the pair and are stopped, and the frames 56,
56' indicates a plurality of wheels 5 provided at the bottom thereof.
7, 57' are movable along box-shaped rails 58, 58', and 59, 59' are traveling cylinders installed on the foundation, and each piston rod 60, 6
The tips of the frames 56, 56' are connected to the side surfaces of the frames 56, 56', respectively, and the frames 56, 56' are movable forward and backward by the operation of the respective traveling cylinders 59, 59', and the frames 56, 56' and the clamp cylinder 55 , 55', each casting 15 is activated by vibrators 54, 54' and clamp cylinders 55, 55'.
55', and is vibrated from one side by vibrators 54, 54'.
62 is a stopper erected from the foundation for positioning each frame 56, 56'; 62 is a cast product 15;
A chute installed below the shakeout device 53 to collect foundry sand removed from the
A conveyor 63 is disposed at the lower end opening of the chute 62 to carry out the recovered foundry sand. 6
4 is used to attach it to an automatic polishing device (not shown) in the subsequent process, or a conveying device 7 to be described later.
Reversal positioning for reversing 90 degrees the casting 15 conveyed from the shake-out device 53 by the transfer device 74 (described later) and positioning the casting 15 in the left-right direction so that the casting 15 can be reliably transferred to the fork 76 of No. 5. As shown in FIG. 5, the reversing positioning device 64 is provided with a pair of rotary clamps 66 at both upper ends of support frames 65, 65' erected from the foundation and extending perpendicularly to the advancing direction of the casting 15. , 66' are provided facing each other, and the rotary clamp parts 66, 66' are provided with clamp boards 68, 6 having casting parts holders 67, 67' protruding from their surfaces.
8' fixed to the tip of the piston rod, and the clamp cylinder 6.
9, 69' and positioning parts 72, 72' (to be described later) at the same time. ,7
2' are integrally formed with the rotating clamp parts 66, 66' and are provided upwardly and parallel to each other, and the pair of positioning cylinders 73, 73' have positioning claws fixed to the lower surfaces of each of the pair of positioning cylinders 73, 73'. The speed of movement from side to side along lines 66 and 66' is completely synchronized. 74 transfers the casting 15 from the shakeout device 53 to the inversion positioning device 6
A transport device 75 such as a hanger conveyor circulates the cast product 15 which has been transferred to 4 and has been further reversed and positioned by the reversal positioning device 64.
A transfer device that sequentially transfers onto the fork 76, the transfer device 74 is a reversing positioning device 64.
Carts 79, 79' are placed by wheels 78 on transport paths 77, 77', respectively, which are provided following the
The piston rods are pivoted horizontally on platform frames 80, 80' which are erected from the foundation at the ends of the transport paths 77, 77', and the tips of the piston rods are connected to the end surfaces of the carriages 79, 79'. Each trolley 7
Transfer cylinder 8 that allows moving forward and backward 9, 79'
1, 81', a pair of long arms 84 and a pair of short arms 85, each of which is swingable in a vertical plane about a shaft 83 supported by a bearing 82 provided on each truck 79, 79'. The long arm 84 and the short arm 85 are provided in the longitudinal direction on the carts 79 and 79', and the substantially intermediate portions of the long arm 84 and the short arm 85 are pivotally supported by the tip of a piston rod, so that the long arm 84 and the short arm 85 can be swung in a vertical plane. Above the transferring device 74, a conveying device 75 such as the above-mentioned hanger conveyor circulates, and at the bottom of the conveying device 75 there is a bifurcated conveyor. Two pairs of forks 76 are installed, and the upper surface of each pair of forks 76 is large enough to hold a total of four cast products 15, two on the front and back, and two on the left and right sides. In other words, two forks are placed on the fork 76 above the conveyance path 77 on the front side in the direction of movement of the conveyance device 75, and the other fork 76
On the fork 76 above 7', two pieces are placed one behind the other in the direction of movement of the conveying device 75. Note that the tip of the long arm 84 is a sideways cast product 1.
5, and the tip of the short arm 85 is shaped so that the vertically oriented cast product 15 after inversion is placed in a stable state. In the case where there is no cast product in the mold 3a extruded from the frame 3, that is, even though the mold 3a has been pushed up by the lifting of the extrusion plate 12 in the frame dismantling device 9, there is no cast product 15. If the piston rod 18 of the lifting cylinder 17 does not rise, the weir folding device 23 and the like in the next process will not operate, and only the pusher cylinder 21 and dump cylinder 43 for extruding the mold 3a will operate to separate the mold 3a. Make sure you can take it out. Note that 88 is trolley 79,7
This is a presser plate that prevents 9' from flying up.

Next, to explain the operation of the present invention with the above-mentioned configuration, the poured mold flask 3 placed on the surface plate 2 and transported in the direction of the arrow on the conveying device 1 is connected to the surface plate 2. When reaching the surface plate removal position A where the frame 3 is separated, the separation cylinder 4 is operated by the operation of a limit switch (not shown) to move the piston rod backward, and the locking plate 7 at the tip of the piston rod removes the flask from above the surface plate 2. 3 is separated and pulled out onto the roller conveyor 5, and transferred to the starting point RO of sending out to the empty frame conveying device 6 on the roller conveyor 5, and after the piston rod is returned by the reverse operation of the separation cylinder 4, the push Operate the cylinder 8 to push out the plate 8 at the tip of the piston rod.
By bringing a into contact with the side surface of the flask 3 and moving it forward, it is transferred onto the empty frame conveying device 6 and stopped at a position directly above the frame disassembling device 9, and then the pusher cylinder 8 is retreated and moved downward. By operating the extrusion cylinder 10 to raise the extrusion plate 12 fixed to the piston rod 11 and removing the frame, the mold 3a in the flask 3 is removed from the extrusion plate 1.
The piston rods 18 of the two vertically movable cylinders 17 for detection are placed on top of the mold 3a and pushed upward, and further advanced into the casting detection device 16 installed above to move the vertically movable piston rods 18 of the two lifting cylinders 17 for detection into the mold 3a. The casting product 15 is detected by inserting it into the piston rod and bringing it into contact with two cast products 15 cast in parallel, and then the switch at the upper end of the piston rod 18 is lifted as the casting product 15 rises. Guess 1
When the limit switch 8a is brought into contact with a limit switch (not shown), the extrusion cylinder 10 of the frame disassembling device 9 is stopped, and then pressure fluid is caused to flow into the supply port below each of the lifting cylinders 17, and the piston rod 1
8 and also activates the pusher cylinder 21 for extruding the mold 3a to advance the extrusion plate 22 fixed to the tip of the piston rod, thereby moving the detected mold 3a on the extrusion plate 12 to the casting product removal position. It is fed into the dump case 20 located below the weir folding device 23 that is waiting at C, and then the extrusion cylinder 10 and the lifting cylinder 1
7. The pusher cylinders 21 are returned to their original positions, and the surface plate 2 left on the conveyor 1 is
The empty frame from which the mold 3a has been removed in the frame disassembling device 9 is pushed successively over the conveying device 1 and the empty frame conveying device 6 by the next sent flask 3, and is recovered. Next, the lifting cylinder 28 of the weir folding device 23 is operated to move the piston rod 2.
9 is lowered, and the clamp cylinder 35 is actuated to connect the rotating shaft 34, via its piston rod and rotating arm.
34' at the same time, the clamp claws 36, 36' fixed to the respective clamp claws are rotated to grip the cast product 15 in the mold 3a at their tips, and then the lifting cylinder 28 is operated in reverse to raise and lower frame 3
0 is lifted to take out two cast products 15 from the mold 3a, and the traveling cylinder 27 is further activated to advance the trolley 26 on which the elevating frame 30 is suspended from the cast product take-out position C to the weir folding position. The clamp claw 3 is stopped at E, and the lifting cylinder 28 is operated to move the lifting frame 30 together with the clamp claw 3.
6, 36', each cast product 15 is lowered to near the entrance of the chute 46 located below and stopped, and then the weir folding cylinder 39 is activated to fold the weir folding cutter 38 around the rotating shaft 37. The sprue and weir are broken off by rotating the sprue and hitting the tip of the sprue of each casting product 15 clamped by the clamp claws 36 and 36', and these are dropped from the chute 46 onto the collection conveyor 47 and transported outside. Have it collected. During this time, the foundry sand remaining in the dump case 20 is discharged onto the conveyor 45 by the operation of the dump cylinder 43 and returned to the sand processing section. Each of the weir-folded castings 15 is then moved to the casting transfer position N by the operation of the traveling cylinder 27 while being clamped by the clamp claws 36, 36', and then the lifting cylinder 28 is further actuated. By lowering the elevating frame 30, the casting 15 is positioned on the casting receivers 50, 50' on the waiting carts 49, 49', respectively, and the clamp cylinder 35 is reversely operated to remove the clamp claws 36, 36' to release the clamp and transfer each casting 15 to the casting receiver 50, 50', and then actuate the transfer cylinders 51, 51' to remove the aforementioned carriage 49 connected to its piston rod. , 49' to the shakeout device 53 side, and each cast product 15 is moved to the shakeout device 53 side.
between the travel cylinders 27 and 27.
is operated in reverse to return the weir folding device 23 to the casting removal position C. Next, the traveling cylinders 59,5
The vibrator 5 installed on the frames 56, 56' of the shakeout device 53 by operating the shakeout device 9'
The tips of the piston rods 4 and 54' are brought into contact with the side surfaces of the respective castings 15, and the clamp cylinders 55 and 55' are actuated to bring the tips of the piston rods into contact with the side surfaces of the castings 15 on the opposite side. By bringing them into contact with each other, each casting 15 is held by clamping both sides by the vibrators 54, 54' and clamp cylinders 55, 55', and at the same time, by operating the vibrators 54, 54', vibration is generated from one side. is applied to shake off used cores, molding sand, etc. adhering to each cast product 15. Each cast product 15 cleaned in this way is transferred to the cylinder 86 of the transfer device 74.
The clamp cylinder 5 is placed on the upper surface of the tip of the long arms 84, 84, which have come close to directly below each casting 15 due to the operation of
5, 55' and travel cylinders 59, 59', and the carriage 7 is unclamped and transferred, and subsequently travels on the transport paths 77, 77' by the operation of the transfer cylinders 81, 81'.
9,79' each casting 15 has a long arm 84,8
Each clamp board 6 of the rotating clamp part 66, 66' of the reversing positioning device 64 is held on the
8, 68', and then, by the operation of the clamp cylinders 69, 69', the clamp boards 68, 68', on which the casting parts holders 67, 67' are protruded, respectively, are advanced, and each casting part is removed. 15
a pair of clamp boards 68, 68' respectively
The reversing cylinder 7 is movably held between each casting holder 67 and 67'.
1,71' to each casting 15 by turning it 90 degrees.
The positioning cylinders 73, 7 of the positioning parts 72, 72' are placed in a convenient state suitable for post-process conveyance work or automatic polishing equipment, etc., and the positioning cylinders 73, 7 of the positioning parts 72, 72' are provided in parallel above the rotary clamp parts 66, 66'.
3' to move the positioning claw fixed to the lower part in a direction approaching the side surface of each cast product 15, and position the movably held cast product 15 to a predetermined position in the center. During the correction, the long arms 84, 84, etc. are returned to the initial position of the shake-out device 53. Each of the cast products 15, which has been inverted and whose left and right positions have been corrected in this way, is placed on the upper surface of the tip of the short arm 85, 85 which has been raised to just below it by the operation of the cylinder 87, and is attached to the clamp cylinder 69, 69' and the positioning cylinder holder. 7
3, 73' is released and transferred, and then placed on the top surface of the tip of one of the short arms 85. The cast product 15 placed on the rear corner of the top surface of the fork 76 in the direction of travel, and placed on the short arm 85 on the other side, is placed on the top surface of the fork 76 that has already been placed two on the front side in the direction of travel. The new cast product 15 that has been placed on the front and rear sides, has been conveyed through the process described above, and has molding sand etc. removed by the shake-out device 53, and is similarly transferred to the reversal positioning device 64 by the long arm 84. After being reversed and positioned, the short arm 85 is placed on the front side of the fork 76 in the direction of movement, and the casting 15 that has been placed on the short arm 85 and transported advances forward by one pitch. It is then transferred to the front side of the fork 76 located on the conveyance path 77' on the near side in the traveling direction. Therefore, the fork 76 in front in the direction of travel
Two cast products 15 are arranged on the top, and four cast products 15 are arranged side by side on the fork 76 on the traveling direction side.
In this way, the conveying device 75 equipped with each fork 76 with the cast product 15 placed on its upper surface is moved intermittently one pitch at a time in the forward direction of movement, and the cast product 15 is sent to a predetermined subsequent process. be.

As is clear from the description of the embodiments described above, the present invention detects the presence of a cast product, takes the cast product out of the mold, folds the weir, removes the core and other molding sand, and then reverses and positions the product. This makes it extremely efficient because only the confirmed castings are processed and the unpoured molds are removed in advance.Furthermore, when folding the weir, the castings are transferred to the clamping device. Since the casting is clamped in a constant state, it is easy to break it off reliably, and the inverted positioning allows the casting to be sent in a stable state suitable for transportation or the next process, so it can be used for complex and difficult-to-handle objects such as cylinder blocks. Even cast products can be reliably processed without any accidents, and this series of processing operations can be easily automated continuously, so it can be carried out efficiently without the need for workers, eliminating the drawbacks of conventional methods. It has many advantages such as:

[Brief explanation of the drawing]

The drawings show one example of an apparatus for carrying out the method of the present invention, and Fig. 1 is a schematic plan view of the entire structure, and Fig. 2 is a schematic side view of the apparatus portion that transfers the flask, disassembles the flask, and detects the cast product. Figure 3 is a schematic side view of the device for folding, shake-out, reversing positioning and transferring of castings, Figure 4 is a schematic front view of the shake-out device for castings, and Figure 5 is reversing of castings. FIG. 3 is a schematic front view of the positioning device. 3... flask, 3a... mold, 9... frame disassembling device, 1
2... Extrusion plate, 15... Casting product, 16... Casting product detection device, 18... Piston rod, 23... Weir folding device, 36, 36'... Clamp claw, 38... Weir folding cutter, 53... Shake out device, 54, 54'
... Vibrator, 55, 55'... Clamp cylinder, 64... Reversing positioning device, 66, 66'... Rotating clamp section, 67, 67'... Casting product holder, 6
8, 68'...Clamp board, 72, 72'...Positioning unit, 74...Transfer device, 75...Transport device.

Claims (1)

[Claims] 1. Push the filled mold upward from the casting flask, and insert a plurality of vertically movable piston rods into the mold so as to correspond to the plurality of cast products to be molded in the mold. Each detected casting is gripped by a clamp claw and taken out from the mold, and then brought to the weir folding position where each sprue is removed by a rotating weir folding cutter. The sprue and weir are broken off by pounding, and then each of the castings is sent into each conveyance path, clamped from both sides, and vibration is applied from one side to remove the molding sand. A method for continuous processing of cast products, characterized in that each of the cast products is movably held from both sides, inverted, positioned, and transferred to each conveying device.