Sand core mold and sand core preparation device

Abstract

The utility model relates to the technical field of construction, in particular to a sand core mold and a sand core preparation device. The sand core mold comprises a first core box, a second core box, a limiting part and a cooling part, a building cavity can be defined by the second core box and the first core box, a through hole is formed in the second core box, the through hole is communicated with the building cavity, the limiting part is arranged in the through hole, part of the cooling part is contained in the building cavity, and the other part of the cooling part is contained in the limiting part. According to the sand core mold, the through hole is formed in the second core box, the limiting part is arranged in the through hole, a part of the cooling part is contained in the building cavity, the other part of the cooling part is contained in the limiting part and abuts against the limiting part, and the cooling part is limited and fixed through the limiting part; accurate positioning and stable fixing of the cooling part in the sand core are achieved, and then the accurate position and fixity of the cooling part in the building process are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of construction, in particular to a sand core mould and a sand core preparation device. Background Art

[0002] In the production process, sand cores are prone to shrinkage and other defects, which is mainly due to the influence of product structure and process. To solve this problem, the method of adding chillers to the sand core is usually adopted. However, the traditional method of installing chillers on sand cores often faces the problems of inaccurate positioning and unstable fixation, which may cause the chillers to shift or fall off during the construction process, thus affecting the final quality of the sand core. Utility Model Content

[0003] The purpose of the utility model is to at least solve the problem of how to place a chiller in a specific area of ​​a sand core with a complex structure. This purpose is achieved through the following technical solutions:

[0004] The first aspect of the utility model provides a sand core mold, comprising:

[0005] First core box;

[0006] a second core box, the second core box and the first core box being able to enclose a building cavity, the second core box being provided with a through hole, the through hole being connected to the building cavity;

[0007] A limiting portion, wherein the through hole is provided with a limiting portion inside;

[0008] A cooling part, part of the cooling part is accommodated in the building cavity, and another part of the cooling part is accommodated in the limiting part.

[0009] According to the sand core mold of the utility model, a through hole is provided in the second core box, and a limiting part is provided inside the through hole, and part of the cooling part is accommodated in the building cavity and the other part is accommodated in the limiting part and abutted therewith, and the limiting part limits and fixes the cooling part, thereby realizing the precise positioning and firm fixation of the cooling part in the sand core, thereby ensuring the precise position and fixation of the cooling part during the building process, thereby avoiding the quality problems of the sand core caused by the displacement or falling off of the cooling part. The reliability and accuracy of the sand core mold in processing complex sand cores are improved, thereby ensuring that the built sand core has higher quality and consistency.

[0010] In addition, the sand core mold according to the utility model may also have the following additional technical features:

[0011] In some embodiments of the present invention, the limiting portion is a limiting block, and the limiting block is detachably disposed in the through hole.

[0012] In some embodiments of the utility model, along the first direction, the limit block is provided with a first limit hole and a second limit hole, the first limit hole and the second limit hole are coaxially connected, the diameter of the second limit hole is smaller than the diameter of the first limit hole, at least the first part of the cooling part is accommodated in the first limit hole, and the transition part between the second limit hole and the first limit hole abuts against the first part of the cooling part.

[0013] In some embodiments of the utility model, the through hole includes a first through hole and a second through hole coaxially connected, the diameter of the second through hole is larger than the diameter of the first through hole, the first through hole and the second through hole are combined in a step shape, and the first through hole is connected to the building cavity, and a first screw hole is opened at the transition position between the second through hole and the first through hole along the first direction.

[0014] In some embodiments of the utility model, the limiting portion includes a first portion and a second portion that are connected, the first portion can be inserted into the first through hole, the second portion can be inserted into the second through hole, and along the first direction, the second portion is provided with a second screw hole, and the first screw hole is arranged corresponding to the second screw hole.

[0015] In some embodiments of the utility model, a limiting ring is provided in the through hole, and the portion of the through hole between the limiting ring and the port connected to the building cavity is the limiting portion, and the cooling portion can be accommodated in the limiting portion and abut against the limiting ring.

[0016] In some embodiments of the present invention, the cooling part is a cold iron, and there is a gap of 0.2 mm-0.4 mm between the side wall of the cold iron and the inner wall of the limiting part.

[0017] The second aspect of the utility model provides a sand core preparation device, comprising the above-mentioned sand core mold, and further comprising:

[0018] A supporting part, wherein the supporting part has a supporting plate that carries the sand core mold and is used to support the sand core mold;

[0019] A core rod, one end of which can pass through the support plate and be inserted into the through hole;

[0020] A top core plate, the other end of the top core rod is connected to the top core plate.

[0021] In some embodiments of the present invention, the sand core preparation device further comprises a return rod, and two ends of the return rod are respectively connected to the support plate and the top core plate.

[0022] In some embodiments of the present invention, the number of the core rods is at least two, and each of the core rods is disposed opposite to one of the through holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0024] Figure 1 The structure diagram of the sand core mold according to the embodiment of the utility model is schematically shown;

[0025] Figure 2 The structure diagram of the limit part according to the embodiment of the utility model is schematically shown;

[0026] Figure 3 The schematic diagram of the structure of the sand core preparation device according to the embodiment of the utility model is schematically shown.

[0027] The reference numerals are as follows:

[0028] 100, sand core mold; 101, building cavity;

[0029] 10. first core box; 20. second core box; 21. through hole; 30. cooling part;

[0030] 40, limiting part; 401, first part; 402, second part; 41, first limiting hole; 42, second limiting hole; 43, second screw hole;

[0031] 200, sand core preparation device; 201, support part; 2011, support plate; 202, core push rod; 203, core push plate; 204, return rod. DETAILED DESCRIPTION

[0032] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0033] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0034] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0035] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both above and below orientations.

[0036] like Figure 1 to Figure 2As shown, according to an embodiment of the utility model, a sand core mold 100 is proposed, which includes a first core box 10, a second core box 20, a limiting portion 40 and a cooling portion 30. The second core box 20 can be combined with the first core box 10 to form a building cavity 101. A through hole 21 is opened on the second core box 20, and the through hole 21 is connected to the building cavity 101. A limiting portion 40 is provided inside the through hole 21. Part of the cooling portion 30 is accommodated in the building cavity 101, and the other part of the cooling portion 30 is accommodated in the limiting portion 40 and abuts against the limiting portion 40.

[0037] According to the sand core mold 100 of the utility model, a through hole 21 is provided in the second core box 20, and a limiting part 40 is provided inside the through hole 21, and part of the cooling part 30 is accommodated in the building cavity 101 and the other part is accommodated in the limiting part 40 and abuts against it. The limiting part 40 limits and fixes the cooling part 30, thereby achieving accurate positioning and firm fixation of the cooling part 30 in the sand core, thereby ensuring the accurate position and fixation of the cooling part 30 during the building process, thereby avoiding the quality problems of the sand core caused by the displacement or falling off of the cooling part 30. The reliability and accuracy of the building mold in processing complex sand cores are improved, thereby ensuring that the built sand core has higher quality and consistency.

[0038] It is understandable that the cooling part 30 is a chiller, which is cylindrical. The cylindrical chiller can provide a uniform cooling effect and is easy to match with the limiter 40 in the sand core mold 100. The use of a cylindrical chiller improves the quality and consistency of the sand core. The precise placement and fixation of the chiller can more effectively control the local cooling of the sand core and reduce the defects such as shrinkage cavities and shrinkage that may occur in the sand core during the cooling process. In addition, the standardized design of the cylindrical chiller also helps to simplify the design and manufacturing process of the sand core mold 100 and improve production efficiency.

[0039] Example 1

[0040] In Example 1 of the present embodiment, the limiting portion 40 is a limiting block, which is detachably disposed in the through hole 21, thereby increasing the flexibility and adaptability of the sand core mold 100. The detachable limiting block enables the sand core mold 100 to be quickly adjusted according to different building requirements, facilitates the installation and replacement of the cooling portion 30, and improves the versatility of the mold and the convenience of maintenance. This improvement is particularly important for coping with different building tasks, thereby improving the efficiency and economy of the overall building process.

[0041] It can be understood that along the first direction ( Figure 1The limiting block is provided with a first limiting hole 41 and a second limiting hole 42, the first limiting hole 41 and the second limiting hole 42 are coaxially connected, the diameter of the second limiting hole 42 is smaller than the diameter of the first limiting hole 41, the first part of the cooling part 30 is accommodated in the first limiting hole 41, and the transition part between the second limiting hole 42 and the first limiting hole 41 abuts against the first part of the cooling part 30. The first limiting hole 41 of the limiting block accommodates part of the cooling part 30, the second limiting hole 42 of the limiting block allows the core rod 202 of the sand core preparation device 200 to pass through, the diameter of the second limiting hole 42 is smaller than the diameter of the first limiting hole 41, one reason is that since the diameter of the second limiting hole 42 is smaller than the first limiting hole 41, an annular boss is formed inside the limiting block. This boss abuts against the cylindrical chiller, playing a limiting role, ensuring the precise position and fixity of the chiller during the construction process. This structure effectively reduces the movement of the chiller in the sand core, improving the quality and consistency of the sand core. Secondly, the second limiting hole 42 allows the core rod 202 of the sand core preparation device 200 to pass through. Since the core rod 202 is mainly used to lift the sand core and does not require a large diameter, the smaller diameter of the second limiting hole 42 not only meets the requirements of the core rod 202, but also reduces the use of materials, thereby optimizing the design of the sand core mold 100.

[0042] It can be understood that the through hole 21 specifically includes a first through hole 21 and a second through hole 21 that are coaxially connected, the diameter of the second through hole 21 is larger than the diameter of the first through hole 21, the first through hole 21 and the second through hole 21 are combined into a step shape, and the first through hole 21 is connected to the building cavity 101, and along the first direction, a first screw hole (not shown in the drawings) is provided at the transition portion between the second through hole 21 and the first through hole. Firstly, by designing the first through hole 21 and the second through hole 21 of different diameters, the first through hole 21 is directly connected to the building cavity 101, which can be used to place or fix the cooling part 30. The larger diameter and step-like structure of the second through hole 21 can facilitate the installation of other parts or components (such as bolts), and further enhance the stability of the limit block fixed in the through hole 21.

[0043] Specifically, in order to match the first through hole 21 and the second through hole 21, the limiting part 40 includes a first part 401 and a second part 402 connected to each other, and the first part 401 and the second part 402 are combined into a boss shape, and the first part 401 can be inserted into the first through hole 21, and the second part 402 can be inserted into the second through hole 21, so as to achieve more accurate positioning and fixation. Along the first direction, the second part 402 is provided with a second screw hole 43, and the first screw hole and the second screw hole 43 are arranged correspondingly, which further improves the connection stability between the limiting part 40 and the sand core mold 100, and through the corresponding arrangement of the screw holes, a simple way is provided to install and disassemble the limiting part 40, thereby improving the maintainability and applicability of the sand core mold 100.

[0044] Example 2

[0045] In Example 2 of the present embodiment, a limiting ring is provided in the through hole 21, and the portion of the through hole 21 from the limiting ring to the port communicating with the building cavity 101 is the limiting portion 40, and the cooling portion 30 can be accommodated in the limiting portion 40 and abut against the limiting ring. In Example 2, the limiting portion 40 and the second core box 20 are an integral structure. A limiting ring is provided in the through hole 21, and this ring is positioned at one end of the through hole 21 close to the building cavity 101, so that the limiting portion 40 is located between the limiting ring and the port communicating with the building cavity 101. The cooling portion 30, such as a cylindrical cold iron, can be accommodated in this limiting portion 40 and tightly abut against the limiting ring, thereby achieving stable fixation and precise position control during the building process. The limiting portion 40 and the second core box 20 form an integrated structure. The integrated design not only simplifies the assembly process of the mold and reduces the number of parts, but also enhances the structural stability of the entire mold. In this way, the durability and reliability of the mold are improved, and the maintenance and replacement of the mold are also simplified.

[0046] It is understandable that in the above two embodiments, the cooling part 30 is a chill, and there is a gap of 0.2mm-0.4mm between the side wall of the chill and the inner wall of the limiting part 40. This gap size is carefully selected to balance the stable fixation of the chill and the thermal expansion during the construction process. Such a gap size is sufficient to ensure that the chill will not get stuck due to thermal expansion during the construction process, and at the same time it is small enough to ensure the precise position of the chill. This fine gap design helps to improve the overall quality of the sand core and ensure that the chill can effectively control the cooling rate of the sand core, thereby reducing sand core defects such as shrinkage cavities and shrinkage.

[0047] It is understandable that in the above two embodiments, at least two through holes 21 are provided on the second core box 20. At least one through hole 21 has a limiter 40, and the limiter 40 has a cooling part 30, while the other through holes 21 may not have limiters 40 and cooling parts 30.

[0048] like Figure 3As shown, this embodiment also provides a sand core preparation device 200, which includes a sand core mold 100, and also includes a support part 201, a core rod 202 and a core plate 203. The support part 201 has a support plate 2011 that carries the sand core mold 100 and is used to support the sand core mold 100. One end of the core rod 202 can pass through the support plate 2011 and be inserted into the through hole 21, and the other end of the core rod 202 is connected to the core plate 203. In this embodiment, the sand core mold 100 is used to form a sand core and is the core part of the entire sand core preparation device 200. The main function of the support part 201 is to support the sand core mold 100 to ensure its stability during the preparation process. The core rod 202 can pass through the sand core mold 100 and directly abut against the cold iron. The function of the core rod 202 is to push the core rod 202 by operating the core plate 203 after the sand core is formed, so that the sand core can be detached from the sand core mold 100. The design of the core plate 203 allows the operator to move the core rod 202 by pushing, and such action ensures that the sand core can be smoothly and completely removed from the mold without additional complicated operations or force. This design not only improves the efficiency and accuracy of sand core demoulding, but also reduces the possible damage to the sand core, thereby ensuring the consistency and reliability of the building quality.

[0049] It is understandable that the sand core preparation device 200 also includes a return rod 204, and the two ends of the return rod 204 are respectively connected to the support plate 2011 and the top core plate 203. Its function is to help the top core rod 202 and the top core plate 203 return to the initial position after the sand core demolding operation is completed. Specifically, the two ends of the return rod 204 are respectively connected to the support plate 2011 and the top core plate 203. After the top core rod 202 pushes the sand core out of the mold, the return rod 204 ensures that the top core plate 203 and the top core rod 202 can return to the starting position smoothly and accurately, ready for the next sand core preparation work. Such a design not only improves the continuity and efficiency of the operation, but also increases the stability and reliability of the equipment, ensuring the smoothness and accuracy of the sand core preparation process.

[0050] Specifically, the two ends of the return rod 204 are connected to the support plate 2011 and the top core plate 203 respectively, and these connecting ends are usually designed as interfaces that can be easily disassembled and connected, such as threaded interfaces or quick connection devices, to facilitate maintenance and replacement. The material of the return rod 204 needs to have sufficient strength and rigidity to withstand the forces during repeated use. Commonly used materials include steel or other high-strength alloys. In order to ensure smooth and accurate movement, the return rod 204 can include guide elements and buffer mechanisms, such as springs or hydraulic buffers, to control its movement speed and reduce impact. The return rod 204 can also include an adjustment mechanism, such as adjusting the length of the return rod 204 by rotating the threaded portion, so as to adjust its position and length according to different sand core sizes or models.

[0051] It can be understood that at least two through holes 21 are provided on the second core box 20, and the number of the core rods 202 is at least two, and the at least two core rods 202 are respectively arranged opposite to the at least two through holes 21. At least one through hole 21 has a limiter 40, and the cooling part 30 is placed in the limiter 40. The other through holes 21 may not be provided with the limiter 40 and the cooling part 30, as long as the core rod 202 can pass through and abut against the sand core mold 100. By providing at least two core rods 202 corresponding to the through holes 21 one by one, a more stable support force is provided when the sand core is demolded, and the sand core is prevented from being damaged when demolded.

[0052] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A sand core mold, It is characterized in that include: First core box; a second core box, the second core box and the first core box being able to enclose a building cavity, the second core box being provided with a through hole, the through hole being connected to the building cavity; A limiting portion, wherein the inside of the through hole is provided with the limiting portion; A cooling portion, part of which is accommodated in the building cavity, and another part of which is accommodated in the limiting portion.

2. The sand core mold according to claim 1, It is characterized in that The limiting portion is a limiting block, and the limiting block is detachably arranged in the through hole.

3. The sand core mold according to claim 2, It is characterized in that Along the first direction, the limit block is provided with a first limit hole and a second limit hole, the first limit hole and the second limit hole are coaxially connected, the diameter of the second limit hole is smaller than the diameter of the first limit hole, at least the first part of the cooling part is accommodated in the first limit hole, and the transition part between the second limit hole and the first limit hole abuts against the first part of the cooling part.

4. The sand core mold according to claim 2, It is characterized in that The through hole includes a first through hole and a second through hole which are coaxially connected. The diameter of the second through hole is larger than the diameter of the first through hole. The first through hole and the second through hole are combined in a step shape, and the first through hole is connected to the building cavity. Along the first direction, a first screw hole is provided at the transition portion between the second through hole and the first through hole.

5. The sand core mold according to claim 4, It is characterized in that The limiting portion includes a first portion and a second portion that are connected, the first portion can be inserted into the first through hole, the second portion can be inserted into the second through hole, and along the first direction, the second portion is provided with a second screw hole, and the first screw hole is arranged corresponding to the second screw hole.

6. The sand core mold according to claim 1, It is characterized in that A limiting ring is provided in the through hole, and the portion of the through hole between the limiting ring and the port communicating with the building cavity is the limiting portion, and the cooling portion can be received in the limiting portion and abut against the limiting ring.

7. The sand core mold according to any one of claims 1 to 6, It is characterized in that The cooling part is a cold iron, and there is a gap of 0.2mm-0.4mm between the side wall of the cold iron and the inner wall of the limiting part.

8. A sand core preparation device, It is characterized in that The sand core mold according to any one of claims 1 to 7 further comprises: A support portion, the support portion having a support plate for carrying the sand core mold; A core rod, one end of which can pass through the support plate and be inserted into the through hole; A top core plate, the other end of the top core rod is connected to the top core plate.

9. The sand core preparation device according to claim 8, It is characterized in that The sand core preparation device also includes a return rod, and two ends of the return rod are respectively connected to the support plate and the top core plate.

10. The sand core preparation device according to claim 8, It is characterized in that The number of the core rods is at least two, and each of the core rods is arranged opposite to one of the through holes.

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