JP4748393B2 - Material transfer device for lattice pallets - Google Patents

Description

  The present invention relates to a material transfer device for a lattice pallet. More specifically, in the process of transferring a material placed on a pallet having a lattice shape (lattice pallet), troubles such as catching and scratching of the material can be reduced, and stable operation of the production line can be realized. The present invention relates to a material transferring device for a lattice pallet.

  Conventionally, in a casting facility, after pouring into a cavity formed by upper and lower molds (sand molds) formed by a mold molding machine to solidify the cast product, mold casting is performed to separate the mold sand and the cast product. I have to. As a method of releasing the mold, after transferring the sand mold with a frame after pouring onto a surface plate (lattice pallet) that is made into a grid shape that can be sanded, the upper and lower casting frames are removed from the sand mold, and The sand mold on the pallet is mechanically stimulated by a vibration imparting mechanism to collapse the sand mold, and the cast product is separated by passing the mold sand from the opening (lattice hole) of the pallet. There is a method (see Patent Document 1). According to this method, there is no possibility of damaging the cast product when sand of a low-strength sand mold is dropped.

JP 2005-334889 A

  However, when the casting product on the grid-like pallet is extruded and transferred to the transport line of the next process after the mold breaking process, the surface of the casting product has an uneven shape, so that it catches on the lattice hole, There is a risk that scratches may occur and transfer cannot be performed successfully. In this case, for example, a method of inverting the pallet 180 ° and dropping it while sliding can be considered, but this method is not suitable when it is not desired to give an impact to the cast product.

  Therefore, in view of the above circumstances, the present invention realizes stable operation of the production line by reducing troubles such as catching and scratching of the material in the process of transferring the material placed on the lattice pallet. An object of the present invention is to provide a material transfer device for a lattice pallet that can be used.

The material transfer device for a lattice pallet according to the present invention separates the mold sand and the material by collapsing the sand mold on the lattice pallet in which a plurality of rectangular lattice holes are formed in a casting factory. the dropped from a lattice-like pallet of the lattice holes, while said workpiece is leaving the lattice-like pallet, after transporting a grid pallets are placed the material to a predetermined transferred repositioning, the pallet A material transfer device in a facility that slides the material to a transfer line in the next process, and is arranged below the predetermined transfer position and formed into a plurality of rectangular lattices formed on the lattice pallet insert a plurality of rectangular liners from below into the hole, comprises a liner lifting means to flatten the upper surface of the pallet, and transferred replacing material extrusion means the transport line of the next step by extruding the material, further The liner lifting / lowering means is disposed opposite to a lifting / lowering actuator, a lifting / lowering base connected to a rod tip of the lifting / lowering actuator, and a plurality of rectangular lattice holes formed on the upper surface of the lifting / lowering base on the lattice-like pallet. And a plurality of rectangular liners .

According to the present invention, when a material on a grid-like pallet which is a grid-shaped transport pallet is pushed out and transferred, a liner is inserted into the grid hole from below, and the upper surface of the pallet and the upper surface of the liner are flush with each other (flat surface). Therefore, troubles such as catching and scratching of the material can be reduced, and stable operation of the production line can be realized.
In addition, since the material is extruded and transferred in a state where the upper surfaces of the pallet and the liner are flat, no impact is generated on the material, there is no indentation on the material, and the defect rate can be reduced. .

  Hereinafter, based on an accompanying drawing, the material transfer device for lattice pallets of the present invention is explained. The present invention is applied to equipment for transferring a lattice pallet on which a material, for example, a cast product, etc., is transferred to a predetermined transfer position and then transferring the material on the pallet to a transfer line in the next process. can do. As shown in FIG. 1, a material transfer device for a grid-like pallet according to an embodiment of the present invention is a material transfer device A in a material transport facility of a foundry, and includes a liner lifting / lowering means B and a material extrusion device. Means C are provided.

  The grid-like pallet in the present embodiment is used for separating materials and conveying materials and sand. That is, from a surface plate carriage on which a poured sand mold that has been poured through a molding process, a pouring process, and a cooling process is placed on a molding line, the sand mold is cast by a mold extruding device to convey the mold separation line (for example, a roller conveyor). After being transferred to a grid-like pallet waiting on the top, the pallet is transferred to the mold dissemination device of the dismantling station at every pitch by pusher means such as an electric cylinder and cushion means. In the case of a metal frame, the mold is carried on a pallet after the process of extracting the mold from the metal frame. Then, after the pallet is conveyed to the mold separating device, the pallet is placed on the arm of the shakeout machine in a state where the mold is placed on the grid-like pallet by the pallet lifting device. Next, the shakeout machine applies vibrations to the lattice pallet to collapse the sand mold on the pallet, separate the mold sand and the cast product, and remove the sand from the lattice holes (lattice) of the lattice pallet. It falls and flows to the lower sand collection, and the casting is left on the grid pallet. Next, the grid-like pallet is transported in a state where the cast product is placed on the pallet, and after further cooling the cast product, the grid-like pallet 1 is transported to the material transfer device A of the present embodiment. .

  As shown in FIGS. 1 to 3, the liner raising / lowering means B inserts the liner 9 into the lattice hole 1 a of the lattice-like pallet 1 from below (lower part), and the upper surface of the pallet 1 is flat, that is, the upper surface of the pallet 1. The liner 9 has a function of making the upper surface of the liner 9 flush (planar), and is disposed between four struts 3 erected opposite to a predetermined transfer position (lower position of the conveyor 2). A plurality of lifting / lowering actuators 5 provided at the center of the base 4 and a plurality of rods 5a that are connected to a rod tip 5a of the lifting / lowering actuators 5 and that can be moved up and down along the guide rails 6 fixed to the support columns 3. A lifting platform 8 having wheels 7 and a plurality of liners 9 disposed on the upper surface of the lifting platform 8 so as to face the plurality of grid holes 1 a formed in the grid-like pallet 1 are provided. The guide rail portion 6 is fixed to the side portion of each column 3, and the wheels 7 are provided at the four corners of the lifting platform 8, and in this embodiment, two are provided. . The number of liners 9 corresponds to the number of lattice holes 1a of the lattice-like pallet 1 and is not particularly limited. In addition, the shape and arrangement of the lattice holes 1a and the liners 9 are not particularly limited in the present invention, and can be appropriately selected such that a rectangular shape or a circular shape is a lattice shape or a staggered shape. Further, the size and material of the grid-like pallet 1 and the liner 9 can be appropriately selected. Further, as the elevating actuator 5, an air cylinder, a hydraulic cylinder, an electric cylinder or the like can be used.

The material extruding means C includes a pair of sliders 14 each having a roller 13 that is rotatably fitted in a groove of a rail 12 provided along a side surface of a frame 11 that is disposed to face the slider 11, and the slider 14 is moved back and forth. An actuator 15 (forward and backward) is provided, and pushing means 16 provided at the rear end of the slider 14 (the position on the right side in FIG. 1).
As the actuator 15, an air cylinder, a hydraulic cylinder, an electric cylinder, or the like connected through a connecting tool 18 disposed on a beam portion 17 provided at the tip of the pair of sliders 14 can be used. The actuator 15 is supported by a cross beam portion 19 provided on the opposed frame 11.
The extrusion means 16 is not particularly limited as long as it has an extrusion plate 21 as an extrusion portion that presses the side surface of the cast product W placed on the lattice pallet 1. In the embodiment, a scouring mechanism 22 and a tilting mechanism 23 are further provided. The scouring mechanism 22 includes a scraper 22a and an air blow 22b, and has a function of removing sand remaining on the upper surface of the lattice pallet 1 during the extrusion process. The tilt mechanism 23 has a function of tilting the scouring mechanism 22, and is sandwiched between a support portion 23a provided at the rear end portion of the slider 14 and a bifurcated portion 23b of the support portion 23a. A tilting body 23d that is tiltable by a shaft 23c inserted through the bifurcated portion 23b, and an air cylinder 23e as an actuator that tilts the tilting body 23d are provided. In the present embodiment, the push-out plate 21 is fixed to a tilting body 23d, and tilts together with the tilting body 23d. Further, the tilting body 23d is sandwiched between the bifurcated portions 23b of the support portion 23a and is tiltable by a shaft 23c inserted into the bifurcated portion 23b, but is tiltable with respect to the support portion. However, the structure is not particularly limited to this.

  In the present embodiment, when the grid-like pallet 1 on which the cast product W is placed is conveyed to the material transfer device A, the pallet 1 is fixed by a positioning device (not shown). Next, the rod of the lifting / lowering actuator 5 in the liner lifting / lowering device B disposed at the lower part of the pallet 1 is extended to insert the liner 9 disposed on the lifting / lowering base 8 into the lattice hole 1a of the pallet 1, and the upper surface of the pallet is Make the surface flat (uneven).

  Next, the rod of the actuator 15 is extended to press the extrusion plate 21 against the side surface of the cast product W, and the apron conveyor 31 of the transport line to the next process while sliding the cast product W on the pallet 1. Extrude to transfer. Simultaneously with the extrusion, the scraper 22a scrapes the top surface of the pallet, the air blow 22b is activated, and the top surface of the pallet is cleaned. At this time, since the upper surface of the pallet is a flat surface, the casting product W is not caught by the pallet 1 and troubles such as scratches on the casting product W do not occur. Therefore, the production line can be operated stably. Then, the cast product W placed on the apron conveyor 31 is conveyed to the next process.

  Next, when the transfer of the cast product W is completed, the air cylinder 23e in the tilting mechanism 23 is extended to tilt the tilting body 23d. By such tilting, the tip of the scraper 22a is lifted and brought into a non-contact state.

  Next, the rod of the actuator 15 is contracted to retract the pushing plate 21, and then the air cylinder 23e is contracted. And it prepares for the next transfer process.

It is sectional drawing of the raw material transfer apparatus for lattice-like pallets concerning one embodiment of this invention. It is a top view of the grid | lattice-like pallet of FIG. It is the II sectional view taken on the line of FIG.

Explanation of symbols

A Material transfer device B Liner raising / lowering means C Material pushing means W Material 1 Lattice pallet 1a Lattice hole 2 Conveyor 3 Strut 4 Base 5 Lifting actuator 5a Rod tip 6 Guide rail 7 Wheel 8 Lift 9 9 Liner 11 Frame 12 Rail 13 Roller 14 Slider 15 Actuator 16 Pushing means 17 Beam part 18 Connecting tool 19 Horizontal beam part 21 Extruding plate 22 Abrasion mechanism 22a Scraper 22b Air blow 23 Tilt mechanism 23a Support part 23b Bifurcated part 23c Shaft 23d Tilt body 23e Air cylinder 31 Apron Conveyor

Claims (6)

In a foundry, a sand mold is collapsed on a lattice pallet formed with a plurality of rectangular lattice holes to separate the mold sand and the material, and the mold sand is dropped from the lattice holes of the lattice pallet, the while leaving the lattice-like pallet, after transporting a grid pallets are placed the material to a predetermined transferred repositioning, transferred to the transport line of the next step by sliding the material on the pallet A material transfer device in the equipment to be replaced,
Liner lifting means disposed below the predetermined transfer position and inserting a plurality of rectangular liners from below into a plurality of rectangular lattice holes formed in the lattice-like pallet to flatten the upper surface of the pallet. And material extruding means for extruding the material and transferring it to the transport line of the next process ,
Further, the liner lifting means is opposed to a lifting actuator, a lifting platform connected to a rod tip of the lifting actuator, and a plurality of rectangular lattice holes formed in the lattice pallet on the upper surface of the lifting platform. A grid-like pallet material transfer device comprising the plurality of rectangular liners arranged . The material extrusion unit, a pair of sliders, an actuator for longitudinal movement of the slider, formed by and a pushing means provided at the rear end of the slider according to claim 1 grid-like pallet material sorting apparatus according . 3. A material transferring apparatus for a grid-like pallet according to claim 2 , wherein the extrusion means is an extrusion plate. 4. A material transferring apparatus for a grid-like pallet according to claim 3, wherein said push-out means further comprises a polishing mechanism and a tilting mechanism. 5. The lattice pallet material transfer device according to claim 4, wherein the scouring mechanism comprises a scraper. The tilting mechanism comprises a tilting body which is to be tiltable with respect to the supporting portion provided at a rear end portion of the slider, comprising an actuator for tilting the inclined body according to claim 4 or 5 grid-like pallet according Material transfer device.