Partition type sand core weight reduction core box mold tool

Abstract

The utility model discloses a partition type sand core weight reduction core box mold tool which comprises a core box base, a sand core partition device is fixedly arranged on the core box base, a core box left mold and a core box right mold are arranged on the two sides of the sand core partition device, a sand core left mold cavity is formed in the core box left mold, and a sand core right mold cavity is formed in the core box right mold. The core box left mold and the core box right mold are respectively supported on the core box base after being closed, and sand core forming gaps are respectively formed between the core box left mold and the sand core partition device as well as between the core box right mold and the sand core partition device after being closed; due to the fact that the sand core partition device is arranged, the formed sand core is hollow, the wall thickness is small, the weight reduction effect of the sand core is greatly improved, in addition, the using amount of core sand is greatly reduced, the machining cost is reduced, the sand core with the weight reduced is more convenient to set, carry and transfer, the labor intensity of workers is reduced, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of sand core processing tools, in particular to a partition-type sand core weight-reducing core box mold tooling. Background Art

[0002] Tail pipe products have the characteristics of asymmetric structures at both ends, such as Figure 5 A tail pipe product 501 is shown. It should be noted that the tail pipe product 501 is only one of the tail pipe products with asymmetric structures at both ends. The tail pipe product 501 is a cast pipe body. The structural asymmetry is mainly manifested in that the two ends of the pipe body are small and the middle is large. When producing the tail pipe product 501, a sand core formed by casting is required. Figure 6 The core box mold tooling shown is specially used for producing Figure 4 The sand core of the middle and tail pipe product includes a sand core base 601, a sand shooting head 602 is arranged directly above the sand core base 601, a core box left mold 603 and a core box right mold 604 are arranged on both sides of the part of the sand core base 601, and the core box left mold 603 and the core box right mold 604 are respectively provided with a concave sand core half cavity. After the two are molded together, core sand is injected through the sand shooting head 602 to form the sand core, and the sand shooting head 602, the core box left mold 603, the core box right mold 604 and the sand core base 601 are a detachable assembly structure, so that the sand core can be taken out after it is formed. In the above-mentioned core box mold tooling, although a sand core center column 605 is provided on the sand core base 601 for reducing the material and weight of the sand core, the effect obtained by this technical means is not obvious, the sand core obtained is still heavy, it is very inconvenient to lower the core and carry it, the core sand material is seriously wasted, and after the casting is poured, there are still shortcomings such as the sand core is not sintered thoroughly and the sand casting is difficult due to the thick sand core wall. In addition, the labor intensity of the workers is high and the work efficiency is low. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a partition-type sand core weight-reducing core box mold tooling which has obvious sand core weight-reducing effect, greatly reduces the amount of core sand used, and is convenient for core setting and transportation and transfer.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a partition-type sand core weight-reducing core box mold tooling, comprising a core box base, a sand core partition device is fixedly provided on the core box base, and a core box left mold and a core box right mold are provided on both sides of the sand core partition device for use together, and a sand core left mold cavity is provided on the side of the core box left mold facing the sand core partition device, and a sand core right mold cavity is provided on the side of the core box right mold facing the sand core partition device. After the core box left mold and the core box right mold are molded together, they are respectively supported on the core box base, and after the mold is molded together, sand core molding gaps are respectively formed between the core box left mold, the core box right mold and the sand core partition device, a sand shooting head is provided directly above the sand core partition device, and the core box left mold, the core box right mold and the sand shooting head are respectively detachable from the sand core partition device.

[0005] As a preferred technical solution, the sand core partition device includes a partition vertical plate fixed on the core box base, one side of the partition vertical plate is provided with a partition left mold body used in conjunction with the left mold cavity of the sand core, and the other side of the partition vertical plate is provided with a partition right mold body used in conjunction with the right mold cavity of the sand core, and the peripheral sides of the partition left mold body and the partition right mold body are respectively sealed and connected to the partition vertical plate.

[0006] As a preferred technical solution, the outer contour of the left partition mold body is consistent with the outer contour of the right partition mold body.

[0007] As a preferred technical solution, both sides of the partition upright plate extend to the outside of the partition left mold body and the partition right mold body respectively, and the top ends of the partition upright plate, the partition left mold body and the partition right mold body are flush with each other.

[0008] As a preferred technical solution, the partition left mold body, the partition right mold body and the partition vertical plate are an integrated structure.

[0009] As an improvement to the above technical solution, the inner contours of the left mold cavity of the sand core are consistent with those of the right mold cavity of the sand core.

[0010] Due to the adoption of the above technical solution, the partition-type sand core weight-reducing core box mold tooling includes a core box base, on which a sand core partition device is fixedly provided, and on both sides of the sand core partition device, a core box left mold and a core box right mold for use are provided, and a sand core left mold cavity is provided on the side of the core box left mold facing the sand core partition device, and a sand core right mold cavity is provided on the side of the core box right mold facing the sand core partition device, and the core box left mold and the core box right mold are respectively supported on the core box base after mold closing, and after mold closing, the core box left mold, the core box right mold and the sand core partition are closed. Sand core forming gaps are formed between the devices respectively, a sand shooting head is provided directly above the sand core partition device, and the core box left mold, the core box right mold and the sand shooting head are detachably arranged from the sand core partition device respectively; the utility model has the following beneficial effects: due to the arrangement of the sand core partition device, the formed sand core is hollow and has a thin wall thickness, which greatly improves the weight reduction effect of the sand core, and also greatly reduces the amount of core sand used, thereby reducing the processing cost, and the weight-reduced sand core is more convenient for core lowering and handling and transfer, which helps to reduce the labor intensity of workers and is convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The following drawings are only intended to illustrate and explain the present invention, and do not limit the scope of the present invention.

[0012] Figure 1 This is a schematic diagram of the mold closing state of an embodiment of the utility model;

[0013] Figure 2 This is a schematic diagram of the mold separation state of an embodiment of the utility model;

[0014] Figure 3 It is a top view of the sand core partition device of the embodiment of the utility model;

[0015] Figure 4 It is a comparison diagram of the sand core formed by the embodiment of the utility model and the sand core formed by the prior art;

[0016] Figure 5 It is a structural schematic diagram of a tail pipe product in the prior art;

[0017] Figure 6 It is used in the existing technology to produce Figure 5 A schematic diagram of the structure of the core box mold tooling of the sand core of the mid-tail pipe product;

[0018] In the figure: 1-core box base; 2-core box left mold; 3-core box right mold; 4-sand core left mold cavity; 5-sand core right mold cavity; 6-sand core molding gap; 7-sand shooting head; 8-partition vertical plate; 9-partition left mold body; 10-partition right mold body; 501-tail pipe product; 601-sand core base; 602-sand shooting head; 603-core box left mold; 604-core box right mold; 605-sand core center column. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings and examples. In the following detailed description, only certain exemplary embodiments of the present invention are described by way of illustration. Needless to say, those skilled in the art will recognize that the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and descriptions are illustrative in nature and are not intended to limit the scope of protection of the claims.

[0020] like Figure 1 , Figure 2 and Figure 3 As shown, the partition-type sand core weight-reducing core box mold tooling is used to make sand cores. The made sand cores are mainly used to cast tail pipe products with asymmetric structures at both ends. Specifically, it includes a core box base 1, on which a sand core partition device is fixedly provided, and on both sides of the sand core partition device, a core box left mold 2 and a core box right mold 3 are provided for use in conjunction, and a sand core left mold cavity 4 is provided on the side of the core box left mold 2 facing the sand core partition device, and a sand core right mold cavity 5 is provided on the side of the core box right mold 3 facing the sand core partition device. After the core box left mold 2 and the core box right mold 3 are molded together, they are respectively supported on the core box base 1. The setting of the sand core partition device makes the formed sand core hollow, and the wall thickness is greatly reduced, which plays a role in reducing the weight of the sand core. Since the wall thickness of the core sand is reduced, even if it forms a hollow structure, the amount of sand used is greatly reduced, thereby reducing the processing cost. The cavity wall profiles of the sand core left mold cavity 4 and the sand core right mold cavity 5 can be designed to be consistent according to the shape of the sand core to be formed.

[0021] In this embodiment, after the mold is closed, a sand core forming gap 6 is formed between the core box left mold 2, the core box right mold 3 and the sand core partition device, and the width of the sand core forming gap 6 determines the wall thickness of the hollow sand core after molding. A sand shooting head 7 is provided directly above the sand core partition device, which is used to fill the sand core forming gap 6 with core sand. The sand shooting head 7 and the core box base 1 are both well known to ordinary technicians in this technical field and will not be described in detail here. The core box left mold 2, the core box right mold 3, and the sand shooting head 7 are respectively detachably arranged with the sand core partition device through corresponding driving mechanisms to facilitate the demolding operation after the sand core is formed.

[0022] like Figure 2 and Figure 3As shown, the sand core partition device includes a partition vertical plate 8 fixedly arranged on the core box base 1, and a partition left mold body 9 used in conjunction with the sand core left mold cavity 4 is provided on one side of the partition vertical plate 8, and a partition right mold body 10 used in conjunction with the sand core right mold cavity 5 is provided on the other side of the partition vertical plate 8, and the peripheral sides of the partition left mold body 9 and the partition right mold body 10 are respectively sealed and connected to the partition vertical plate 8. The partition left mold body 9 and the partition right mold body 10 can be set as a hollow plate structure, and its outer contour is consistent with the inner contour of the sand core to be processed and formed, and the cavity wall contours of the sand core left mold cavity 4 and the sand core right mold cavity 5 are consistent with the outer contour of the sand core to be processed and formed. When the processed sand core is put into the production of the pipe tail product, the outer contour of the sand core forms the inner cavity contour of the pipe tail product.

[0023] The outer contour of the partition left mold body 9 is consistent with that of the partition right mold body 10. The two sides of the partition vertical board 8 extend to the outside of the partition left mold body 9 and the partition right mold body 10 respectively. The tops of the partition vertical board 8, the partition left mold body 9, and the partition right mold body 10 are arranged flush. The partition left mold body 9, the partition right mold body 10 and the partition vertical board 8 are an integrated structure. The inner contours of the sand core left mold cavity 4 and the sand core right mold cavity 5 are consistent. After the mold is closed, the core box left mold 2 and the core box right mold 3 are respectively against the two sides of the partition vertical board 8. Through the above design, the two sand core half-body structures formed are symmetrical, and after being combined and fixed, a complete sand core is formed.

[0024] Of course, the outer contours of the partition left mold body 9 and the partition right mold body 10 can also be designed to be inconsistent, and the corresponding inner contours of the sand core left mold cavity 4 and the sand core right mold cavity 5 are also designed to be consistent, so that two different sand core halves can be obtained at the same time. It is realized that two different sand cores can be processed with one set of core box mold tooling, thereby reducing the configuration of core box mold tooling and reducing production costs.

[0025] like Figure 4 As shown, it is a schematic diagram comparing the sand core formed by using the present embodiment and the sand core formed by the prior art tooling. The wall thickness of the sand core obtained by using the present embodiment is T1, and the wall thickness of the sand core obtained by using the prior art is T2. It can be clearly seen that the size of T1 is much smaller than the size of T2. Therefore, this case has a significant effect in reducing weight and saving materials.

[0026] This embodiment takes Luyuan's 8-point 90° elbow as an example. The formed sand core is reduced by about 15kg per piece, that is, 15kg less core sand is used per piece, saving about 8.4 yuan in cost. The significant reduction in weight makes it easier and more efficient for workers to set the core and carry it. This embodiment is not limited to forming the above-mentioned tail pipe products. By designing the outer contours of the partition left mold body 9 and the partition right mold body 10, and the inner contours of the sand core left mold cavity 4 and the sand core right mold cavity 5, other models such as 6-point fire hydrant base, 8-point 45°, 10-point 45° or 90°, 12-point 45° or 90° elbows, etc. can also be formed.

[0027] The description of the present invention is given for the purpose of illustration and description, and is not intended to be exhaustive or to limit the present invention to the disclosed form. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for specific uses.

Claims

1. A partition-type sand core weight-reducing core box mold tooling, including a core box base, characterized in that: A sand core partition device is fixedly provided on the core box base, and a core box left mold and a core box right mold for use therewith are provided on both sides of the sand core partition device. A sand core left mold cavity is provided on the side of the core box left mold facing the sand core partition device, and a sand core right mold cavity is provided on the side of the core box right mold facing the sand core partition device. The core box left mold and the core box right mold are respectively supported on the core box base after being molded together, and sand core molding gaps are respectively formed between the core box left mold, the core box right mold and the sand core partition device after being molded together. A sand shooting head is provided directly above the sand core partition device, and the core box left mold, the core box right mold and the sand shooting head are detachable from the sand core partition device.

2. The partition type sand core weight loss core box mold tooling according to claim 1 is characterized in that: The sand core partition device includes a partition vertical plate fixed on the core box base, one side of the partition vertical plate is provided with a partition left mold body used in conjunction with the sand core left mold cavity, and the other side of the partition vertical plate is provided with a partition right mold body used in conjunction with the sand core right mold cavity, and the peripheral sides of the partition left mold body and the partition right mold body are respectively sealed and connected to the partition vertical plate.

3. The partition type sand core weight loss core box mold tooling according to claim 2 is characterized in that: The outer contour of the partition left mold body is consistent with that of the partition right mold body.

4. The partition type sand core weight loss core box mold tooling according to claim 2, characterized in that: Both sides of the partition upright plate extend to the outer sides of the partition left mold body and the partition right mold body respectively, and the top ends of the partition upright plate, the partition left mold body and the partition right mold body are flush with each other.

5. The partition type sand core weight loss core box mold tooling according to claim 2, characterized in that: The partition left mold body, the partition right mold body and the partition vertical plate are an integrated structure.

6. The partition type sand core weight loss core box mold tooling according to claim 1, characterized in that: The inner contours of the left mold cavity of the sand core are consistent with the inner contours of the right mold cavity of the sand core.

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