Multi-step foam evanescent mode forming die easy to take parts

Abstract

The utility model discloses a multi-step foam evanescent mode forming die easy to take, which comprises a fixing plate, the top of the fixing plate is fixedly connected with a limiting sleeve, and the inner wall of the limiting sleeve is fixedly connected with a multi-step foam evanescent mode forming die and a starting motor. An output shaft of the motor rotates to drive a threaded rod to rotate so as to drive a threaded block to move, the threaded block moves to drive a rotating rod to rotate, and the rotating rod pulls a pull rod to move so as to drive a piston to move, so that the piston drives a blocking block to move, and blocking of a bayonet by the blocking block fails; the fan is started, the fan conveys air into the annular pipe through the air inlet pipe, then the air is divided through the multiple vertical pipes, the air enters the mounting groove through the connecting pipe and the ventilation groove and is finally blown out through the clamping opening, the product and the mold are separated through the air, operation is convenient, and part taking is convenient.

Description

Technical Field

[0001] The utility model relates to the field of lost foam, in particular to a multi-step foam lost foam forming die which is easy to take out. Background Art

[0002] In the production process of large cast iron pipe fittings, it is now very popular to use foam lost foam molds for production. This production method has good surface molding quality of the workpiece cast and the molding size is easy to control. In order to better cast high-precision workpieces, it is necessary to produce foam lost molds with higher inner and outer wall quality. The foam lost foam is made by heating and melting foam particles in a mold and then cooling them into shape.

[0003] The present application is improved on the basis of the prior art. In the prior art, the conventional multi-step foam lost foam mold is usually designed to be a multi-petal type, at least a three-petal or four-petal structure, for better demoulding, because the lost foam mold itself has a complex structure. After the lost foam mold is formed, the multi-petal type mold is disassembled and loosened inwards, and the foam lost foam product on the outside can be taken out smoothly. However, the lost foam mold formed by the multi-petal type mold has obvious convex marks on the inner and outer walls, which affects the appearance quality of the later casting molded products. At the same time, each demoulding is time-consuming and laborious, and the mold is seriously damaged.

[0004] It seriously affects the production efficiency of lost foam. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and provides a multi-step foam lost foam molding die which is easy to take out.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A multi-step foam lost foam molding die that is easy to remove parts, comprises a fixed plate, the top of the fixed plate is fixedly connected to a limiting sleeve, the inner wall of the limiting sleeve is fixedly connected to the multi-step foam lost foam molding die, the outer wall of the multi-step foam lost foam molding die is provided with a plurality of equally distributed bayonet sockets, the multi-step foam lost foam molding die is provided with a plurality of equally distributed mounting grooves, the mounting grooves are connected with the bayonet sockets, the inner wall of the mounting groove is slidably connected with a piston, a blocking block is fixedly connected to the piston, and the blocking block is adapted to the bayonet sockets, a rubber pad is fixedly connected to the outer wall of the blocking block, the multi-step foam lost foam molding die is provided with a plurality of equally distributed ventilation grooves, the ventilation grooves are located below the mounting grooves, and the ventilation grooves are connected with the mounting grooves, an annular tube is fixedly connected to the fixed plate, a plurality of equally distributed vertical tubes are fixedly connected to the annular tube along its circumferential direction, a plurality of equally distributed connecting tubes are fixedly connected to the vertical tubes, and the connecting tubes are connected with the ventilation grooves.

[0008] As a further solution of the utility model: the top of the fixed plate is rotatably connected to a threaded rod, the outer wall of the threaded rod is threadedly connected to a plurality of equidistantly distributed threaded blocks, the outer wall of the threaded block is hinged with a plurality of equidistantly distributed rotating rods along its circumferential direction, the other end of the rotating rod is hinged to a pull rod, the pull rod is slidably connected to the multi-step foam lost foam molding mold, and the other end of the pull rod is fixedly connected to the piston.

[0009] As a further solution of the utility model: a motor is fixedly connected to the bottom of the fixing plate, and an output shaft of the motor is fixedly connected to the threaded rod.

[0010] As a further solution of the utility model: the bottom of the fixed plate is fixedly connected to a fan, the air outlet of the fan is fixedly connected to an air inlet pipe, and the other end of the air inlet pipe is fixedly connected to the annular pipe.

[0011] The utility model has the following beneficial effects:

[0012] In the utility model, the mold is first placed at the production station. After the foamed foam particles are heated and formed, the manufactured lost foam product is sleeved on the outer wall of the lost foam body, and the motor is started. The output shaft of the motor rotates to drive the threaded rod to rotate and then drives the threaded block to move. The movement of the threaded block drives the rotating rod to rotate. The rotating rod pulls the pull rod to move and then drives the piston to move, so that the piston drives the blocking block to move, and the blocking of the block to the bayonet fails. When the piston moves to the upper right side of the ventilation groove, the bayonet, the mounting groove and the ventilation groove are connected, and the fan is started. The fan conveys air to the annular pipe through the air inlet pipe, and then the air is diverted through multiple vertical pipes. The air enters the mounting groove through the connecting pipe and the ventilation groove, and is finally blown out through the bayonet. The air separates the product from the mold, which is convenient for operation and removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of a multi-step foam lost foam molding die that is easy to remove parts, as proposed by the utility model;

[0014] Figure 2 It is a partial top view of a multi-step foam lost foam molding die that is easy to remove parts proposed by the utility model;

[0015] Figure 3 For the utility model Figure 1 A is an enlarged structural diagram of FIG.

[0016] Legend:

[0017] Fixed plate 1, limiting sleeve 2, multi-step foam lost foam forming mold 3, annular pipe 4, air inlet pipe 5, fan 6, motor 7, threaded rod 8, threaded block 9, rotating rod 10, pull rod 11, vertical pipe 12, ventilation groove 13, connecting pipe 14, bayonet 15, installation groove 16, rubber pad 17, blocking block 18, piston 19. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0020] Reference Figure 1-3The utility model provides a multi-step foam lost foam molding die that is easy to take out, comprising a fixed plate 1, a limiting sleeve 2 is fixedly connected to the top of the fixed plate 1, a multi-step foam lost foam molding die 3 is fixedly connected to the inner wall of the limiting sleeve 2, a plurality of equally distributed bayonet sockets 15 are provided on the outer wall of the multi-step foam lost foam molding die 3, a plurality of equally distributed mounting grooves 16 are provided on the multi-step foam lost foam molding die 3, the mounting groove 16 is communicated with the bayonet socket 15, a piston 19 is slidably connected to the inner wall of the mounting groove 16, a blocking block 18 is fixedly connected to the piston 19, and the blocking block 18 is adapted to the bayonet socket 15, a rubber pad 17 is fixedly connected to the outer wall of the blocking block 18, a plurality of equally distributed ventilation grooves 13 are provided on the multi-step foam lost foam molding die 3, the ventilation groove 13 is located below the mounting groove 16, and the ventilation groove 13 is communicated with the mounting groove 16, and a plurality of equally distributed ventilation grooves 13 are provided on the fixed plate 1 It is connected to an annular tube 4, on which a plurality of equally distributed vertical tubes 12 are fixedly connected along its circumferential direction, on which a plurality of equally distributed connecting tubes 14 are fixedly connected, and the connecting tubes 14 are communicated with the ventilation slots 13, the top of the fixed plate 1 is rotatably connected to a threaded rod 8, the outer wall of the threaded rod 8 is threadedly connected to a plurality of equally distributed threaded blocks 9, the outer wall of the threaded block 9 is hinged with a plurality of equally distributed rotating rods 10 along its circumferential direction, the other end of the rotating rod 10 is hinged to a pull rod 11, the pull rod 11 is slidably connected to the multi-step foam lost foam molding mold 3, and the other end of the pull rod 11 is fixedly connected to a piston 19, the bottom of the fixed plate 1 is fixedly connected to a motor 7, the output shaft of the motor 7 is fixedly connected to the threaded rod 8, the bottom of the fixed plate 1 is fixedly connected to a fan 6, the air outlet of the fan 6 is fixedly connected to an air inlet pipe 5, and the other end of the air inlet pipe 5 is fixedly connected to the annular tube 4.

[0021] Working principle:

[0022] In the present application, the mold is first placed at the production station. After the foamed foam particles are heated and formed, the manufactured lost foam product is sleeved on the outer wall of the lost foam body, and the motor 7 is started. The output shaft of the motor 7 rotates to drive the threaded rod 8 to rotate and then drives the threaded block 9 to move. The movement of the threaded block 9 drives the rotating rod 10 to rotate. The rotating rod 10 pulls the pull rod 11 to move and then drives the piston 19 to move, so that the piston 19 drives the block 18 to move, and the block 18 fails to block the bayonet 15. When the piston 19 moves to the upper right side of the ventilation groove 13, the bayonet 15, the mounting groove 16 and the ventilation groove 13 are connected, and the fan 6 is started. The fan 6 transports the air through the air inlet pipe 5 to the annular pipe 4, and then the air is diverted through multiple vertical pipes 12. The air enters the mounting groove 16 through the connecting pipe 14 and the ventilation groove 13, and is finally blown out through the bayonet 15. The air separates the product from the mold, which is convenient for operation and removal.

[0023] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-step foam lost foam molding die that is easy to remove, comprising a fixing plate (1), characterized in that: The top of the fixed plate (1) is fixedly connected to a limiting sleeve (2), the inner wall of the limiting sleeve (2) is fixedly connected to a multi-step foam lost foam molding die (3), the outer wall of the multi-step foam lost foam molding die (3) is provided with a plurality of equally spaced bayonet holes (15), the multi-step foam lost foam molding die (3) is provided with a plurality of equally spaced mounting grooves (16), the mounting grooves (16) are connected to the bayonet holes (15), the inner wall of the mounting groove (16) is slidably connected to a piston (19), the piston (19) is fixedly connected to a blocking block (18), and the blocking block (18) is adapted to fit the bayonet holes (15). The outer wall of the blocking block (18) is fixedly connected to a rubber pad (17); the multi-step foam lost foam molding die (3) is provided with a plurality of equidistantly distributed ventilation slots (13); the ventilation slots (13) are located below the mounting slots (16), and the ventilation slots (13) are connected to the mounting slots (16); the fixing plate (1) is fixedly connected to an annular tube (4); the annular tube (4) is fixedly connected to a plurality of equidistantly distributed vertical tubes (12) along its circumferential direction; the vertical tubes (12) are fixedly connected to a plurality of equidistantly distributed connecting tubes (14), and the connecting tubes (14) are connected to the ventilation slots (13).

2. The multi-step foam lost foam molding die for easy removal according to claim 1, characterized in that: The top of the fixed plate (1) is rotatably connected to a threaded rod (8), the outer wall of the threaded rod (8) is threadedly connected to a plurality of equidistantly distributed threaded blocks (9), the outer wall of the threaded block (9) is hingedly connected to a plurality of equidistantly distributed rotating rods (10) along its circumferential direction, the other end of the rotating rod (10) is hingedly connected to a pull rod (11), the pull rod (11) is slidably connected to the multi-step foam lost foam molding die (3), and the other end of the pull rod (11) is fixedly connected to a piston (19).

3. The multi-step foam lost foam molding die for easy removal according to claim 1, characterized in that: A motor (7) is fixedly connected to the bottom of the fixed plate (1), and an output shaft of the motor (7) is fixedly connected to a threaded rod (8).

4. The multi-step foam lost foam molding die for easy removal according to claim 1, characterized in that: The bottom of the fixed plate (1) is fixedly connected to a fan (6), the air outlet of the fan (6) is fixedly connected to an air inlet pipe (5), and the other end of the air inlet pipe (5) is fixedly connected to the annular pipe (4).

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