JP2008030067A - Mold gate cleaning device - Google Patents

Abstract

An apparatus capable of air blowing to a gate formed at an arbitrary position of a mold on fresh sand.
A pouring molding drill 2 is disposed below a fresh sand mold 1 with a parting surface facing upward, and an air blow unit 6 for blowing air from almost right above the pouring molding drill is provided to mold the pouring gate on the fresh sand mold. In the molding and cleaning device for the sprue that blows air against the molded sprue, the air blow unit is connected to the air blow nozzle 23 for air blowing, the air blow nozzle is connected and fixed to the tip, and the compressed air source is connected to the base end via the rubber hose 28. A connected pipe member 24, a first through hole that allows the pipe member to be movably penetrated and can be fixed via a tightening mechanism and that is oriented in the horizontal direction, and is perpendicular to the first through hole and has a tightening mechanism. A holding member 25 having two through-holes, and a support member 26 having a columnar portion fixedly disposed thereon and penetrating the second through-hole of the holding member, Accordingly, characterized by being configured.
[Selection] Figure 1

Description

The present invention relates to a molding and cleaning device for a gate, in which a gate is formed in a green mold on a horizontal sand with a parting surface facing upward, and air is blown to the formed gate.

Conventionally, as one of the methods for forming the pouring gate of the green sand mold, in the pouring method of forming a long hole pouring gate on the green sand mold, the rotary sand drill is positioned after the pouring surface is faced downward and the rotary drill is positioned. Is formed by reciprocating in the longitudinal direction of the long hole gate.
JP 2000-140998 A

However, in the conventional method for forming a pouring gate of a green sand mold configured as described above, sand particles generated by cutting the green sand mold with a rotary drill adhere to the cavity surface of the green sand mold and cause sand biting. Therefore, air is blown against the gate during cutting of the green sand mold to blow off the sand particles.

By the way, as recently, in facilities for producing a large variety of small castings, it is necessary to adopt a casting method peculiar to each model, and it is necessary to provide the gate in an optimum position corresponding to the casting method. The number and location of each will vary from model to model.
For this reason, in the apparatus for performing the conventional gate forming method, the rotary drill is configured to be able to move in the horizontal direction. Therefore, there has been a problem that sand grains generated during cutting of the gate cannot be blown off properly.

The present invention has been made in view of the above circumstances, and its purpose is to air blow to an appropriate position with respect to a pouring gate formed at an arbitrary position of a horizontal green sand mold with a parting surface facing upward. An object of the present invention is to provide an apparatus capable of performing the above.

In order to achieve the above object, the molding and cleaning device of the gate according to the present invention is arranged so as to be movable in the horizontal and vertical directions below the horizontal sand mold with the parting surface facing upward, and the gate on the green sand mold. A gate forming drill for cutting and molding, a lifting mechanism for moving the gate forming drill in the vertical direction, a moving mechanism for moving the lifting mechanism and the gate forming drill in the horizontal direction, and a fixed arrangement in the vicinity of the moving mechanism And an air blow unit that blows air from directly above the gate forming drill to the gate formed by the gate forming drill, and forms the gate on the mold on the fresh sand and blows air to the formed gate. In the molding and cleaning apparatus of the present invention, the air blow unit includes an air blow nozzle for air blowing, and the air blow nozzle communicated and fixed to the tip. A pipe member to which a compressed air source is connected via a rubber hose, and a first through hole which is movably inserted through the pipe member and can be fixed via a tightening mechanism and which is oriented horizontally. A holding member having a second through hole perpendicular to the hole and having a tightening mechanism, and a support member having a cylindrical portion on the upper portion, which is separately fixed and arranged to wrap the holding member in the second through hole, It is characterized by comprising.

  What is configured in this way is that the air blow nozzle of the air blow unit faces the position at which the sprue is cut and formed above the horizontal fresh sand mold with the parting surface facing upward, and the moving mechanism is Drive appropriately and move the sprue forming drill and the lifting mechanism directly below the air blow nozzle with the mold on the fresh sand sandwiched, and then lift the sprue forming drill with the lift mechanism while rotating the blade to cut the sprue on the mold on the fresh sand. At the same time, air is blown from an air blow nozzle to blow away sand particles generated during cutting of the gate.

As is apparent from the above description, the present invention provides a sprue molding in which a pouring gate is cut and formed in a mold on the raw sand mold, which is disposed so as to be movable in the horizontal and vertical directions below the horizontal sand mold on a parting surface. A drill, an elevating mechanism for moving the pouring gate drill in the vertical direction, a moving mechanism for moving the elevating mechanism and the pouring gate drill in a horizontal direction, and fixedly disposed in the vicinity of the moving mechanism, the pouring gate drill An air blow unit that blows air from above the sprue molding drill to the spout formed by the mold, and forming a spout on the mold on the fresh sand and blowing the air to the sprue, The air blow unit has an air blow nozzle for air blowing, and the air blow nozzle is connected and fixed to the tip and a rubber hose is attached to the base end. A pipe member to which a compressed air source is connected, a first through hole that is movably penetrated and can be fixed via a tightening mechanism, and is oriented in the horizontal direction, and is orthogonal to the first through hole. And a holding member having a second through-hole having a tightening mechanism, and a support member having a cylindrical portion on the upper portion that is separately fixed and arranged to wrap the holding member in the second through-hole. By hand, the air blow nozzle can be placed at the position to cut and mold the spout above the horizontal sand mold with the parting surface facing up. On the other hand, it has excellent practical effects such as being able to blow air properly.

Hereinafter, an embodiment of a molding cleaning device to which the present invention is applied will be described in detail with reference to FIGS. As shown in FIG. 5 and FIG. 6, the molding and cleaning device for the main gate is disposed below the horizontal sand mold 1 in a horizontal state with the parting surface up, and is movable in the horizontal and vertical directions. A gate forming drill 2 for cutting and molding the gate, a lifting mechanism 3 for moving the gate forming drill 2 in the vertical direction, a moving mechanism 4 for moving the lifting mechanism 3 and the gate forming drill 2 in the horizontal direction, A plurality of air blow units 6 and 6 that are fixedly disposed in the vicinity of the moving mechanism 4 and blow air from the top of the gate forming drill 2 to the gate formed by the gate forming drill 2 are formed.

The green sand mold 1 is built in a cast frame 8 that is movably mounted on a roller conveyor 7 with a flange extending in the front-rear direction.
Further, in the gate forming drill 2, a hemispherical blade 9 is fitted on the rotating shaft of the holder 10 so as to be rotatable in a horizontal plane.

Further, in the moving mechanism 4, as shown in FIG. 5, two support members 12, 12 are fixed on the base 11 at a predetermined interval in the left-right direction, and the two support members 12. A rectangular column-shaped guide bar 13 extending in the left-right direction is installed between 12 in a state rotated by 45 degrees in the vertical plane. A rectangular cylindrical moving member 14 is slidably mounted on the guide bar 13. The moving member 14 includes a piston lot of a first cylinder 15 pivoted on the support member 12 via a bracket 21. The moving member 14 is configured to reciprocate in the left-right direction via the guide bar 13 by the expansion and contraction operation of the first cylinder 15.

Further, in the moving mechanism 4, as shown in FIG. 6, a rectangular tubular fixing member 16 oriented in the left-right direction orthogonal to the moving member 14 is rotated 45 degrees on the upper surface of the moving member 14 in the vertical plane. The fixed member 16 is slidably penetrated with a rectangular columnar moving member 17 having the gate forming drill 2 and the lifting device 3 mounted at the right end. The front end of the piston lot of the second cylinder 22 pivoted on the fixing member 16 is pin-connected to the left side surface of the gate forming drill 2, and the gate forming drill 2 and the lifting device 3 are connected to the first side. The two cylinders 22 reciprocate in the left-right direction via the moving member 17 by the expansion and contraction operation.

As shown in FIGS. 1 to 3, each of the plurality of air blow units 6, 6 includes an air blow nozzle 23 that blows air, a tube member 24 that has the air blow nozzle 23 communicated and fixed to the tip, and the tube member 24. And a holding member having a first through hole that can be fixed through a tightening mechanism and that is horizontally oriented and a second through hole that is orthogonal to the first through hole and has a tightening mechanism 25, and a support member 26 which is fixed to the outer surface of the roller conveyor 7 and has a cylindrical portion on the upper portion for mounting the holding member 25 in the second through hole. The base ends of the pipe members 24 and 24 are connected to a fixed throttle valve 27 through a rubber hose 28. The throttle valve 27 is electromagnetically opened and closed as shown in FIG. The valve 29 is connected to a compressed air source (not shown).

Further, the tightening mechanism is provided with slits reaching the first through hole and the second through hole, respectively, and tightening the first through hole and the second through hole by narrowing the interval between the slits by rotating a bolt. It has become.
The air blow nozzle 23 is connected to a compressed air source (not shown) via a throttle valve 27 and an electromagnetic on-off valve 29 as shown in FIG.

  In this configuration, the pipe members 24 and 24 in the air blow units 6 and 6 are rotated in the horizontal plane and moved with respect to the holding members 25 and 25, respectively, so that the parting surface is raised. After the plurality of air blow nozzles 23 and 23 are respectively exposed to the positions where the sprue is cut and formed above the horizontal sand mold 1 in the horizontal state, the bolts of the tightening mechanism are rotated so that the plurality of tube members 24 and 24 are rotated. The plurality of holding members 25 and 25 are fixed to the plurality of holding members 25 and 25, respectively, and the plurality of holding members 25 and 25 are fixed to the plurality of support members 26 and 26, respectively.

Next, the first cylinder 15 and the second cylinder 22 of the moving mechanism 4 are appropriately expanded and contracted to move the gate forming drill 2 and the elevating mechanism 3 directly below the air blow nozzle 23 with the green sand mold 1 interposed therebetween. While the blade 9 is rotated, the gate forming drill 2 is raised by the elevating mechanism 3 to cut and mold the gate into the green sand mold, and at the same time, the electromagnetic on-off valve 29 is opened and air blown from the air blow nozzle 23 to cut the gate. Blow away the sand particles generated inside. The above operation is also performed on the other air blow nozzles 23. Thereby, an air blow can be accurately performed with respect to the gate formed in the arbitrary positions of the mold 1 on fresh sand.

  In the air blow unit 6 in the above-described embodiment, one holding member 25 having the tube member 24 penetrated is mounted on the cylindrical portion of one support member 26 through the second through hole. 7 to 9, the two holding members 25, 25 having the pipe member 24 inserted therein are respectively connected to the one supporting member 36 through the second through holes. The cylindrical portion may be overlapped and mounted. Thereby, it becomes possible to cope with more gates.

It is a front view of one Example of this invention. It is a top view of FIG. It is a left view of FIG. It is an air piping system diagram concerning an air blow unit. It is a front view of one Example of the shaping | molding cleaning apparatus of the gate which applied this invention. FIG. 6 is a left side view of FIG. 5. It is a front view of the other Example of this invention. FIG. 8 is a plan view of FIG. 7. FIG. 8 is a left side view of FIG. 7.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mold on fresh sand 2 Mouth shaping drill 3 Lifting mechanism 4 Moving mechanism 6 Air blow unit 23 Air blow nozzle 24 Pipe member 25 Holding member 26 Support member 28 Rubber hose

Claims (2)

A spout forming drill that is arranged so as to be movable horizontally and vertically below the horizontal sand mold with the parting surface up, and a spout forming drill that cuts the sprue into the mold on the green sand, and moves the spout forming drill in the vertical direction. An elevating mechanism to be moved, a moving mechanism for moving the elevating mechanism and the pouring gate forming drill in a horizontal direction, and fixedly disposed in the vicinity of the moving mechanism, with respect to the pouring gate formed by the pouring gate forming drill. An air blow unit that blows air from directly above, forming a gate on the green sand mold and blowing air to the formed gate;
The air blow unit,
An air blow nozzle for air blowing;
A tube member in which the air blow nozzle is communicated and fixed to the distal end, and a compressed air source is connected to the proximal end via a rubber hose;
The tube member is movably penetrated and fixed through a tightening mechanism, and further, a first through hole that is horizontally oriented and a second through hole that is orthogonal to the first through hole and has a tightening mechanism. A holding member having,
A support member having a cylindrical portion on the upper portion, which is separately fixed and arranged to wrap the holding member in the second through hole;
A molding and cleaning device for a sprue characterized by comprising the above. In the shaping cleaning device of the gate according to claim 1,
An apparatus for forming and cleaning a gate according to claim 2, wherein two or more of the holding members each having the pipe member inserted through the cylindrical portion of the support member are overlapped and installed in the second through hole.