Wooden mould box for large casting production

Abstract

The utility model discloses a wooden mould box for producing large castings, which comprises an upper mould box and a lower mould box, the lower mould box comprises an inner wooden box and an outer wooden box, the inner wooden box is positioned inside the outer wooden box, an isolation cavity is formed between the inner wooden box and the outer wooden box, a plurality of support columns are arranged in the isolation cavity, a plurality of through holes are arranged on the periphery of the inner wooden box, U-shaped heat conduction pipes are inserted in the through holes, and the U-shaped heat conduction pipes are communicated with the inner wooden box. One end of the U-shaped heat conduction pipe is connected with a liquid inlet pipe, the other end of the U-shaped heat conduction pipe is connected with a liquid outlet pipe, the liquid inlet pipe and the liquid outlet pipe respectively extend out of the outer wood box, the upper mold box and the lower mold box have the same structure, and a feeding pipe is connected to the middle of the outer wood box of the upper mold box and extends into the inner wood box of the upper mold box. A structure formed by the inner wooden box, the outer wooden box and the supporting columns is adopted, and is matched with internal molding sand, so that the overall strength and stability of the molding box are greatly enhanced. And the U-shaped heat conduction pipe can accurately regulate and control the cooling speed and is flexible to arrange, so that all parts of the casting are uniformly cooled.

Description

TECHNICAL FIELD

[0001] The utility model belongs to foundry mould technical field, concretely relates to wooden mould box for large castings production. BACKGROUND

[0002] In the production process of large castings, the mould box as the key equipment of forming, its performance plays a decisive role on the quality of castings. The traditional wooden mould box structure is relatively simple, and many problems are exposed when facing the production of large castings. On the one hand, the ordinary wooden mould box has the deficiency in strength and stability, and it is difficult to withstand the huge pressure in the forming process of large castings, and deformation and damage are prone to occur, which not only affects the dimensional accuracy of castings, but also increases the scrap rate. On the other hand, in the cooling process of large castings, due to the lack of effective heat dissipation control means, the cooling speed of each part of the castings is uneven, which causes a large stress inside, and even causes the cracking of the castings in serious cases.

[0003] Some existing mould box improvement schemes are deficient in structural strength improvement, or have poor heat dissipation effect, or have insufficient flexibility, and can only be used for single castings, and cannot fully meet the requirements of high precision, high efficiency, high stability and low cost of the mould box for large castings production. UTILITY MODEL CONTENTS

[0004] To solve the above technical problems, the utility model adopts the technical scheme of wooden mould box for large castings production, which comprises an upper mould box and a lower mould box, the upper mould box covers the lower mould box, the lower mould box comprises an inner wooden box and an outer wooden box, the inner wooden box is located inside the outer wooden box, an isolation cavity is formed between the inner wooden box and the outer wooden box, a plurality of support columns are arranged in the isolation cavity, one end of the support column is fixedly connected with the inner wooden box, the other end of the support column is connected with the outer wooden box through a plurality of bolts, a plurality of through holes are arranged around the inner wooden box, a U-shaped heat conducting pipe is inserted in the through hole, one end of the U-shaped heat conducting pipe is connected with a liquid inlet pipe, the other end of the U-shaped heat conducting pipe is connected with a liquid outlet pipe, the liquid inlet pipe and the liquid outlet pipe respectively extend out of the outer wooden box, the upper mould box and the lower mould box are the same in structure, and a feeding pipe is connected to the middle of the outer wooden box of the upper mould box.

[0005] As a preferred technical scheme of the above, the isolation cavity is filled with sand.

[0006] As the preferred technical scheme of the above, the through hole is a long strip-shaped through hole, the U-shaped heat pipe passes through the long strip-shaped through hole, the isolation cavity is provided with a plurality of distribution boxes, the distribution boxes are detachably connected to the outer wooden box, the distribution boxes are provided with a liquid inlet cavity and a liquid outlet cavity, the distribution boxes are provided with a plurality of liquid inlet interfaces and a plurality of liquid outlet interfaces, the liquid inlet interfaces are communicated with the liquid inlet cavity, the liquid outlet interfaces are communicated with the liquid outlet cavity, one end of the U-shaped heat pipe is connected to one of the liquid inlet interfaces of the distribution box through a quick plug, the other end of the U-shaped heat pipe is connected to one of the liquid outlet interfaces of the distribution box through a quick plug, the remaining liquid inlet interfaces and the remaining liquid outlet interfaces of the distribution box are covered by detachable sealing plates respectively, a liquid inlet pipe is communicated with the liquid inlet cavity, and a liquid outlet pipe is communicated with the liquid outlet cavity.

[0007] As the preferred technical scheme of the above, the through hole is a long strip-shaped through hole, the U-shaped heat pipe passes through the long strip-shaped through hole, the isolation cavity is provided with a plurality of distribution boxes, the distribution boxes are detachably connected to the outer wooden box, the distribution boxes are provided with a plurality of liquid inlet interfaces and a plurality of liquid outlet interfaces, the liquid inlet interfaces are communicated with the liquid inlet cavity, the liquid outlet interfaces are communicated with the liquid outlet cavity, one end of the U-shaped heat pipe is connected to one of the liquid inlet interfaces of the distribution box through a quick plug, the other end of the U-shaped heat pipe is connected to one of the liquid outlet interfaces of the distribution box through a quick plug, the remaining liquid inlet interfaces and the remaining liquid outlet interfaces of the distribution box are covered by detachable sealing plates respectively, a liquid inlet pipe is communicated with the liquid inlet cavity, and a liquid outlet pipe is communicated with the liquid outlet cavity.

[0008] As the preferred technical scheme of the above, the through hole is a long strip-shaped through hole, the U-shaped heat pipe passes through the long strip-shaped through hole, the isolation cavity is provided with a plurality of distribution boxes, the distribution boxes are detachably connected to the outer wooden box, the distribution boxes are provided with a plurality of liquid inlet interfaces and a plurality of liquid outlet interfaces, the liquid inlet interfaces are communicated with the liquid inlet cavity, the liquid outlet interfaces are communicated with the liquid outlet cavity, one end of the U-shaped heat pipe is connected to one of the liquid inlet interfaces of the distribution box through a quick plug, the other end of the U-shaped heat pipe is connected to one of the liquid outlet interfaces of the distribution box through a quick plug, the remaining liquid inlet interfaces and the remaining liquid outlet interfaces of the distribution box are covered by detachable sealing plates respectively, a liquid inlet pipe is communicated with the liquid inlet cavity, and a liquid outlet pipe is communicated with the liquid outlet cavity.

[0009] The wood mold box has the advantages that the structure of the inner wooden box, the outer wooden box and the support column is adopted, the internal sand is matched, the overall strength and stability of the mold box are greatly enhanced, the large casting forming pressure can be effectively resisted, the deformation damage risk is reduced, the casting size precision is ensured, the cooling speed can be accurately controlled through the heat dissipation design of the U-shaped heat pipe and the distribution box, each part of the casting is uniformly cooled, the U-shaped heat pipe can be adjusted in position and length according to different castings, and the castings of different structures can be flexibly used. BRIEF DESCRIPTION OF DRAWINGS

[0010] Fig. 1 is a schematic view of the internal structure of the lower mold box;

[0011] Fig. 2 is a schematic view of the structure of the utility model;

[0012] Fig. 3 is a schematic view of the sectional structure of the distribution box. DETAILED DESCRIPTION

[0013] The technical scheme of the utility model will be described clearly and completely in combination with the drawings, obviously, the described embodiments are a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0014] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0015] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0016] like Figs. 1-3 As shown, a wooden mold box for large casting production includes an upper mold box 1 and a lower mold box 2. The upper mold box 1 covers the lower mold box 2. The lower mold box 2 includes an inner wooden box 3 and an outer wooden box 4. The inner wooden box 3 is located inside the outer wooden box 4, and an isolation cavity 5 is formed between the inner wooden box 3 and the outer wooden box 4. Several support columns 6 are provided in the isolation cavity 5. One end of the support column 6 is fixedly connected to the inner wooden box 3, and the other end of the support column 6 is connected to the outer wooden box 4 by several bolts. Several through holes are provided around the inner wooden box 3. U-shaped heat conduction pipes 7 are inserted into the through holes. One end of the U-shaped heat conduction pipe 7 is connected to an inlet pipe 8, and the other end of the U-shaped heat conduction pipe 7 is connected to an outlet pipe 9. The inlet pipe 8 and the outlet pipe 9 extend out of the outer wooden box 4, respectively. The upper mold box 1 and the lower mold box 2 have the same structure. A feeding pipe 10 is connected to the middle of the outer wooden box 4 of the upper mold box 1. The feeding pipe 10 extends into the inner wooden box 3 of the upper mold box 1.

[0017] Furthermore, the isolation cavity 5 is filled with molding sand. The molding sand improves the heat insulation effect and increases the structural strength of the upper mold box 1 and the lower mold box 2. Other easily filled heat insulation materials, such as clay, can also be used instead of molding sand.

[0018] Furthermore, the through hole is an elongated through hole 11, through which the U-shaped heat-conducting pipe 7 movably passes. The isolation chamber 5 contains several distribution boxes 12, each detachably connected to an outer wooden box 4. Each distribution box 12 contains an inlet chamber 13 and an outlet chamber 14. The distribution box 12 has several inlet ports 15 and several outlet ports 16. The inlet ports 15 connect to the inlet chamber 13, and the outlet ports 16 connect to the outlet chamber 14. One end of the U-shaped heat-conducting pipe 7 is connected to one of the inlet ports 15 on the distribution box 12 via a quick-connect plug, and the other end is connected to one of the outlet ports 16 on the distribution box 12 via a quick-connect plug. The remaining inlet ports 15 and outlet ports 16 on the distribution box 12 are covered by detachable sealing plates. The inlet pipe 8 connects to the inlet chamber 13, and the outlet pipe 9 connects to the outlet chamber 14. The position and number of the U-shaped heat-conducting pipes 7 can be flexibly adjusted according to the shape of the casting.

[0019] Furthermore, each side wall of the inner wooden box 3 is provided with several rows of elongated through holes 11, and U-shaped heat-conducting pipes 7 are inserted into some or all of the elongated through holes 11. The U-shaped heat-conducting pipes 7 can move in the elongated through holes 11, so that the U-shaped heat-conducting pipes 7 can be installed in specific positions according to the different shapes of the casting.

[0020] Furthermore, the support column 6 is made of wood, the U-shaped heat pipe 7 is made of copper or a copper alloy, and the distribution box 12 is made of aluminum or an aluminum alloy. The U-shaped heat pipe 7 has good thermal conductivity and can quickly cool the casting.

[0021] It is worth mentioning that the technical features such as quick plugs involved in this utility model patent application should be regarded as prior art. The specific structure, working principle, and possible control methods and spatial arrangement of these technical features can be conventionally selected in the field and should not be regarded as the inventive point of this utility model patent. This utility model patent will not elaborate further.

[0022] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make many modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning or limited experimentation on the basis of the prior art should be within the scope of protection defined by the claims.

Claims

1. A wooden mold box for large casting production, characterized in that, The system includes an upper mold box and a lower mold box, with the upper mold box covering the lower mold box. The lower mold box includes an inner wooden box and an outer wooden box, with the inner wooden box located inside the outer wooden box. An isolation cavity is formed between the inner and outer wooden boxes, and several support columns are provided in the isolation cavity. One end of each support column is fixedly connected to the inner wooden box, and the other end of each support column is connected to the outer wooden box via several bolts. Several through holes are provided around the inner wooden box, and U-shaped heat-conducting pipes are inserted into the through holes. One end of each U-shaped heat-conducting pipe is connected to an inlet pipe, and the other end is connected to an outlet pipe. The inlet and outlet pipes extend out of the outer wooden box, respectively. The upper mold box has the same structure as the lower mold box. A feeding pipe is connected to the middle of the outer wooden box of the upper mold box, and the feeding pipe extends into the inner wooden box of the upper mold box.

2. The wooden mold box for large casting production as described in claim 1, characterized in that, The isolation cavity is filled with molding sand.

3. The wooden mold box for large casting production as described in claim 1, characterized in that, The through hole is an elongated through hole, through which the U-shaped heat-conducting pipe moves. The isolation chamber contains several distribution boxes, each detachably connected to an outer wooden box. Each distribution box contains an inlet chamber and an outlet chamber, and each distribution box has several inlet and outlet ports. The inlet ports connect to the inlet chamber, and the outlet ports connect to the outlet chamber. One end of the U-shaped heat-conducting pipe connects to one of the inlet ports on the distribution box via a quick-connect plug, and the other end connects to one of the outlet ports on the distribution box via a quick-connect plug. The remaining inlet and outlet ports on the distribution box are covered by detachable sealing plates. The inlet pipe connects to the inlet chamber, and the outlet pipe connects to the outlet chamber.

4. The wooden mold box for large casting production as described in claim 3, characterized in that, Each side wall of the inner wooden box is provided with several rows of elongated through holes, and U-shaped heat-conducting tubes are inserted into some or all of the elongated through holes.

5. The wooden mold box for large casting production as described in claim 4, characterized in that, The support column is made of wood, the U-shaped heat pipe is made of copper or copper alloy, and the distribution box is made of aluminum or aluminum alloy.

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