JPH0357320Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a core setter for assembling a core into a vertically split mold, and particularly relates to a core setter equipped with a core deburring means.

(Prior art) Generally, a molding cavity is often formed by incorporating a core as part of the mold inside the mold, and when the core has a relatively thin shell-like shape, A shell mold core with excellent bonding strength is used.

The above-mentioned shell mold core is manufactured by molding and sintering coated sand coated with phenolic resin, etc. However, when the above-mentioned shell mold core is molded using a pair of molds, it is necessary to The coated sand that protrudes from the slight gap between the mating surfaces will remain as a burr on the periphery of the core, and if it is sintered as it is, the strength will increase and it will remain on the core.

By the way, in the case of a core having a large number of slits at locations corresponding to the mating surfaces of the mold, burrs are formed on the inner peripheral edges of the large number of slits.

Casting with a mold in which the core is attached to the main mold without removing the burrs will result in casting defects.
Conventionally, after the core was sintered, the core was placed in a shell deburring tool placed on the workbench, and the burrs were removed manually using a soft brush.

(Problem that the invention aims to solve) Since conventional deburring work is done manually, there may be cases where the core is not completely seated in the shell deburring jig, and the core is cast with shell burrs remaining. In addition, even if the core is completely seated in the shell burr removal jig, the shell burr removed by the shell burr removal jig may remain attached to the core and be cast, resulting in casting defects.
Furthermore, Japanese Patent Application Laid-open No. 49-56829 discloses a technique for removing burrs when removing the core from the mold by placing a sand burr finishing blade close to the mold that matches the dimensions and shape of the cutting surface of the core. However, this technique requires a complicated mechanism to move the finishing blade.

(Means for Solving the Problems) The core setter according to the present invention is a core setter that assembles cores into vertically split molds, and the core setter is configured to hold the cores in a predetermined posture on the movable part of the main body for transporting and assembling the cores of the core setter. A core mounting portion is provided which includes a core support for supporting the core and a deburring tool that closely engages with the core attached to the core support to remove burrs from the core. The core is attached to the core attachment part, and an air blowing means is provided for blowing out burrs removed by a deburring tool during transportation.

(Function) In the core setter according to the present invention, a core supporter for supporting the core in a predetermined posture is provided in the movable part of the core setter for transporting and assembling the core; Since the core mounting part is equipped with a deburring tool for removing burrs from the core, when the core is attached to the core support, the deburring tool tightly engages with the core to remove burrs from the core. removed.

In addition, an air blowing means is installed to attach the core to the core mounting part and blow air to remove burrs that are removed by the deburring tool during transportation, so that the movable parts of the main body are removed by the deburring tool while the main body is being moved. Adhering burrs are blown off by air blow.

(Effects of the invention) According to the core setter of the invention, as explained above, the core mounting part is provided with a deburring tool and an air blowing means for air blowing the burrs removed by the deburring tool. The deburring work of the core can be done automatically during the core assembly work without having to be done as a separate work in the previous process.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

The main mold in this example is a vertical split sand mold for producing hollow castings, and its front and rear parts are molded into a pair of left and right predetermined casting shapes by a main mold molding machine, respectively, and are successively molded. The main molds are transported one by one to a predetermined core assembly stage by a main mold transport mechanism.

FIG. 1 shows the arrangement of the core setter 1 in the core assembly stage A, and the following description will be made assuming that the X direction in the figure is the front side and the Y direction is the right side.

The core setter 1 includes a main body movable section 2 for transporting and assembling cores, and a mechanism for reciprocating the main body movable section 2 in the left-right direction.

A pair of left and right mounting members 3 are provided on the upper surface of the main body movable section 2, and the upper ends of these mounting members 5 are guided by a pair of front and rear guide rods 4 disposed in the left and right direction. The lower end portions are respectively guided by a pair of left and right guide rods 6 arranged in the front-rear direction.

Further, a cylinder 7 is attached to the mounting member 3a on the right side of the mounting member 3 in the front-rear direction, and the tip of the piston rod 7a is fixed to the lower rear end of the guide member 5. Accordingly, in the core assembly stage A, there are two positions: the forward position where the core 8 is attached to the main mold 9 as shown in Figs. ).

Further, in order to reciprocate the main body movable part 2 in the left-right direction, a hydraulically driven cylinder 10 is disposed at a predetermined position in the left-right direction, and the tip of the piston rod 10a of the cylinder 10 is connected to the guide member 5. It is fixed to the center part of the lower left end, and the main body movable part 2 is guided by a pair of front and rear guide rods 4 to a right end position facing the main mold 9 on the core assembly stage A and a predetermined distance leftward from this right end position. It is driven by the cylinder 15 until it moves to the left end position where the core 8 is set on the core mask 11 (described later).

A pair of left and right core masks 11 for attaching the core 8 are removably attached to the front surface of the main body movable part 2, and a core support 12 for supporting the core 8 in a predetermined posture is attached to the center of each core mask 11. are fixed respectively.

As shown in FIG. 2, the core support 12 is integrally formed of a large diameter cylindrical main body 12a facing in the front-rear direction and a core support 12b concentric with the main body 12a.

As shown in FIGS. 3 to 5, the core 8 is a core for a mold for casting a ventilated disk plate for an automobile, and a slit 8a elongated in the radial direction is formed in the vicinity of the outer periphery in the circumferential direction. A large number of shell burrs 13 are formed radially at intervals, and shell burrs 13 formed during molding of the core 8 remain in the slits 8a.

As shown in FIG. 2, the deburring tools 14 for removing the shell burrs 13 of the core 8 are provided on the annular main body 14a and on the inner peripheral surface of the main body 14a at positions equally divided into four circumferences. 4 supporting parts 1
4b, and a large number of radially elongated projecting portions 14c provided radially at equal intervals in the circumferential direction on the front surface of the main body portion 14a.
is fitted at a predetermined position on the outer peripheral surface of the main body portion 12a of the core supporter 12. Then, as shown in FIG. 4, when the core 8 is attached to the core support 12 with the leaf 8b of the core 8 facing forward, the leaf 8b of the core 8
b is externally fitted onto the core support shaft 12b, and the protruding portions 14c of the deburring tool 14 are engaged with each slit 8a almost immediately, removing the burr 13 of each slit 8a.
is removed by the protrusion 4c.

In addition, in order to air blow the burr 13 that has been removed by the deburring tool 14 and adhered to the core 8,
Air introduction pipes 15 are disposed toward the front and back through mounting members at the front ends of the middle sections on both the left and right sides of the main body movable section 2, and the front ends of each air introduction pipe 15 are deburred on the left and right. An air nozzle 16 for blowing air toward the vicinity of the front surface of the tool 14 is provided, and the rear end of the air introduction pipe 15 is connected to a pressurized air generator via an air hose 17.

Next, the operation of the core setter configured as described above will be explained.

First, the core supports 12 of the left and right core masks 11 of the main body movable part 2 of the core setter 1 located at the left end position
When the core 8 is installed with the bar 8b of the core 8 facing forward, the core 8 is locked to the core support shaft 12b at the bar 8b, and the shape shown by the imaginary line in FIG. As shown, each protruding part 14c of the deburring tool 14 is engaged with each slit 8a almost immediately, and the burr 13 on the peripheral edge of the slit 8a is pushed forward by the protruding part 14c, and the core is removed. The rear end of the core 8 comes into contact with the front end surface of the main body 14a of the deburring tool 14, and the core 8 is supported in a predetermined posture.

Next, pressurized air is ejected from the left and right air nozzles 16 while moving the main body movable part 2 at the left end position to the right by driving the cylinder 10.
stops at the right end position and at the same time stops blowing out the pressurized air, so the burr 13 removed by the deburring tool 14 and attached to the core 8 is removed while the core 8 is being transported to the core assembly stage A. It is blown off by air blow.

When the cylinder 7 is driven to move the main body movable part 2 at the right end position to the forward position, a pair of left and right cores 8
is inserted into the main mold 9, and each leaflet 8a of the core 8 fits into the corresponding leaflet receiver of the main mold 9.

Next, when the main body movable part 2 is retracted, the pair of left and right cores 8 are installed at predetermined positions in the main mold 9, and after the main body movable part 2 is moved to the retracted position (right end position), it is moved to the left end position. Bring it back.

When the core 8 is assembled to the main mold 9 by the core setter 1 in the core assembly stage A, the main mold 9 with the core 8 assembled moves forward by one main mold by the main mold transport mechanism. At the same time, the next main mold 9 is transported to the core assembly stage A, and the rear surface of the main mold 9 on which the core 8 has been assembled comes into contact with the front surface of the main mold 9 that has been transported next, and the two front and rear molds are separated. A pair of left and right molds incorporating the core 8 are sequentially manufactured using the main mold 9.

As explained above, the burr removing tool 14 is provided on the core attachment part 11 of the main body movable part 2 of the core setter 1, and when the core 8 is attached, the burr 13 is destroyed and the core 8 is removed.
Since the burr pieces are blown away by air blowing during conveyance, the burr 13 can be reliably and automatically removed without a special burr removal process.

In the above embodiment, the present invention was applied to the core setter 1 for setting the core 8 for a mold for casting a ventilated disc plate of an automobile brake system. Needless to say, the present invention can be similarly applied to the core setter 1 that sets various types of cores.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a perspective view of the core setter, FIG. 2 is a perspective view of the core mask, FIG. 3 is a front view of the core, FIG. 5 and an enlarged view of the main part of the core, and FIG. 6 are explanatory diagrams showing a state in which burrs on the periphery of the slit of the core are removed by a deburring tool. A... Core assembly stage, 1... Core setter, 2... Main body movable part, 7... Cylinder, 8...
Core, 8a...slit, 8b...habaki, 9...
... Main mold, 10 ... Cylinder, 11 ... Core mask, 12 ... Core support, 13 ... Burr, 14 ...
...Deburring tool, 14c...Protruding portion, 15...Air introduction pipe, 16...Air nozzle.

Claims (1)

[Scope of Claim for Utility Model Registration] In a core setter for assembling cores into vertically split molds, a core supporter for supporting the core in a predetermined posture is provided on a movable part of the main body of the core setter for transporting and assembling the core; A core mounting part is provided that is equipped with a deburring tool that is attached to the core support and closely engages with the core to remove burrs from the core, and the core is mounted on the core mounting part. A core setter characterized by being provided with an air blowing means for blowing out burrs removed by a burr remover during conveyance.