CN216758052U - Hot core box for manufacturing water pump mounting bracket sand core - Google Patents

Hot core box for manufacturing water pump mounting bracket sand core Download PDF

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Publication number
CN216758052U
CN216758052U CN202122690651.6U CN202122690651U CN216758052U CN 216758052 U CN216758052 U CN 216758052U CN 202122690651 U CN202122690651 U CN 202122690651U CN 216758052 U CN216758052 U CN 216758052U
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China
Prior art keywords
core box
sand
electric heating
core
water pump
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CN202122690651.6U
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Chinese (zh)
Inventor
肖祥林
许海峰
周勇
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Wuxi Zhongxin Mould Technology Co ltd
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Wuxi Zhongxin Mould Technology Co ltd
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Abstract

The utility model relates to a hot core box for manufacturing a water pump mounting bracket sand core, which comprises an upper core box and a lower core box, wherein an upper cavity is arranged on the lower surface of the upper core box, a lower cavity and a sand shooting hole are arranged on the upper surface of the lower core box, two forming blocks are arranged in the lower cavity, an auxiliary heating assembly is arranged between the lower cavity and the forming blocks, the auxiliary heating assembly comprises an electric heating pipe and a containing hole, the electric heating pipe is vertically arranged on the inner wall of the lower cavity, the containing hole is vertically arranged on the bottom surface of the forming block, and the electric heating pipe is inserted into the containing hole and is attached to the inner wall of the containing hole. The utility model can efficiently and quickly heat the forming block in the sand core manufacturing process, so that the sand core around the forming block can be hardened and formed with high quality, and the processing quality of the sand core around the forming block is improved.

Description

Hot core box for manufacturing water pump mounting bracket sand core
Technical Field
The utility model relates to the technical field of casting, in particular to a hot core box for manufacturing a sand core of a water pump mounting bracket.
Background
The hot core box method is a method for making sand core by machine in casting production, and is characterized by that the sand material formed from sand for casting, thermosetting resin and solidifying agent is injected into the hot core box with heating device, and heated to about two hundred deg.C, so that the sand material close to the surface of hot core box is heated, and under the action of high temp., its binder can be polycondensed and hardened in a short time so as to form the sand core.
As shown in fig. 1, a water pump mounting bracket 1 is provided, wherein a water pump mounting bracket sand core 2 shown in fig. 2 needs to be used when the water pump mounting bracket 1 is manufactured, two forming holes 3 are formed in the water pump mounting bracket sand core 2, a hot core box shown in fig. 3-5 needs to be used when the water pump mounting bracket sand core 2 is manufactured, the hot core box comprises an upper core box 4 and a lower core box 5, an upper cavity 6 is arranged on the lower surface of the upper core box 4, a lower cavity 7 is arranged on the lower surface of the lower core box 5, two forming blocks 8 for forming the forming holes 3 are arranged in the lower cavity 7, the top surface of each forming block 8 is higher than the upper surface of the lower core box 5, a sand shooting hole 9 is further arranged on the upper surface of the lower core box 5, and one end of the sand shooting hole 9 is communicated with the lower cavity 7. The height of the forming block 8 is 108.5mm, the wall thickness is 7.3mm, the wall thickness at the minimum position is 3.7mm, and the forming block belongs to a typical thin-wall insert block; the forming block 8 and the upper core box 4 and the lower core box 5 are made of HT 250. When the sand core of the water pump mounting bracket 1 is manufactured, the upper core box 4 and the lower core box 5 are firstly assembled, then the precoated sand is injected into the upper cavity 6 and the lower cavity 7 through the sand injection hole 9 by using a core injector, finally the upper core box 4 and the lower core box 5 are heated, the resin wrapped around the sand can be melted under the action of a certain temperature, and after cooling, the single sand can be bonded together to form the complete sand core.
However, there is a problem in the above production process: because the forming block has a high and thin structure, less heat accumulation and quick heat dissipation, less heat is conducted to the position of the forming block in the heat of the lower core box, and the sand core near the forming block is not easy to harden and form. The sand core does not harden, which has the following adverse effects: 1. the sand core is easy to lose, so that the casting is fleshy, and the workload of subsequent casting polishing is increased; 2. sand grains fall from the non-hardened part during core setting, and the fallen sand cores enter the cavity to cause the defect of casting sand holes; 3. a large amount of raw sand exists in the sand core, the gas evolution of the raw sand is large, and in the pouring process, the gas evolution of the raw sand is large, and the generated gas is not discharged out of the cavity, so that the defect of casting gas holes is caused. In conclusion, the difficulty of hardening the sand core near the forming block not only affects the quality of the casting, but can even lead to the direct rejection of the casting.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Aiming at the defects in the prior art, the utility model provides a hot core box for manufacturing a sand core of a water pump mounting bracket, which aims to solve the problem that the quality of a casting is reduced because the nearby sand core is difficult to form due to the poor heat conduction effect of a forming block in the prior art.
(II) technical scheme
In order to achieve the purpose, the technical scheme of the utility model is as follows:
the utility model provides a hot core box for making water pump installing support psammitolite, includes upper core box and lower core box, the upper core box lower surface is provided with the die cavity, lower core box upper surface is provided with down the die cavity and penetrates the sand hole, be provided with two shaping pieces, its characterized in that in the die cavity down: be provided with auxiliary heating subassembly down between die cavity and the shaping piece, auxiliary heating subassembly includes electric heating pipe and accommodation hole, the vertical setting of electric heating pipe is on the inner wall of die cavity down, the vertical bottom surface of seting up at the shaping piece of accommodation hole, electric heating pipe inserts in the accommodation hole and laminates with the inner wall of accommodation hole.
Furthermore, the containing holes are formed in each forming block in two, and the electric heating pipes are the same in number and correspond to the containing holes in one-to-one position.
Furthermore, the depth of the accommodating hole is larger than three-quarters of the height of the forming block.
(III) advantageous technical effects
In summary, the utility model has the following beneficial technical effects:
1. in the utility model, as the auxiliary heating component is arranged, the electric heating pipe can heat the inside of the forming block in the sand core manufacturing process, thereby ensuring that the forming block can quickly reach an ideal temperature, and enabling the sand core near the forming block to be formed with high quality, and further avoiding the problem that the nearby sand core cannot be formed due to the over-low temperature of the forming block;
2. because two containing holes are arranged on each forming block, the number of the electric heating pipes is the same as that of the containing holes, and the positions of the electric heating pipes correspond to those of the containing holes one by one, the heating efficiency and the heating area of the electric heating pipes on the forming blocks can be improved, and the heating effect of the electric heating pipes on the forming blocks is further improved;
3. because the degree of depth of accommodation hole is greater than three quarters of shaping piece height, therefore electric heating pipe's length is greater than three quarters of shaping piece height, so electric heating pipe can carry out abundant heating to the shaping piece, is favorable to each position of shaping piece to be fully heated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a mounting bracket for a water pump in the background art;
FIG. 2 is a schematic structural diagram of a sand core of a water pump mounting bracket in the background art;
FIG. 3 is a schematic view of a hot box according to the prior art;
FIG. 4 is a schematic view for embodying the structure of a lower cavity in the background art;
FIG. 5 is a schematic view for embodying the structure of an upper cavity in the related art;
FIG. 6 is a schematic structural diagram of a hot core box for manufacturing a water pump mounting bracket sand core in the embodiment;
FIG. 7 is a schematic view of an electrical heating tube arrangement used in embodying embodiments;
fig. 8 is a schematic view for embodying the structure of the accommodation hole in the embodiment.
Description of reference numerals:
in the figure, 1, a water pump mounting bracket; 2. a water pump mounting bracket sand core; 3. forming holes; 4. a core box is arranged; 5. a lower core box; 6. an upper cavity; 7. a lower cavity; 8. forming a block; 9. a sand shooting hole; 10. an electric heating tube; 11. an accommodation hole.
Detailed Description
In order to make the technical solutions of the present application better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used in other meanings besides orientation or positional relationship, for example, the term "upper" may also be used in some cases to indicate a certain attaching or connecting relationship. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example (b):
referring to fig. 6-8, the hot core box for manufacturing the water pump mounting bracket sand core disclosed by the utility model comprises an upper core box 4 and a lower core box 5. The lower surface of the upper core box 4 is provided with an upper cavity 6, the upper surface of the lower core box 5 is provided with a lower cavity 7 and two sand shooting holes 9, one end of each sand shooting hole 9 is communicated with the lower cavity 7, and two forming blocks 8 are arranged in the lower cavity 7.
An auxiliary heating component is arranged between the lower cavity 7 and the forming block 8, and the auxiliary heating component is used for heating the forming block 8. The auxiliary heating assembly comprises an electric heating pipe 10 and a containing hole 11, the electric heating pipe 10 is vertically arranged on the inner wall of the lower cavity 7, the containing hole 11 is vertically formed in the bottom surface of the forming block 8, and the electric heating pipe 10 is inserted into the containing hole 11 and attached to the inner wall of the containing hole 11. Wherein, electric heating pipe 10 is ceramic electric heating pipe 10, and ceramic electric heating pipe 10 has advantages such as electric heat conversion efficiency height, intensification are fast, corrosion-resistant, long-lived.
Through the setting, in the psammitolite manufacture process, electric heating pipe 10 can heat the inside of shaping piece 8 to guarantee that shaping piece 8 can reach ideal temperature fast, and make near the psammitolite of shaping piece 8 can the high-quality shaping, thereby solve shaping piece 8 because of self temperature low excessively lead to near the unable fashioned problem of psammitolite.
Furthermore, two accommodating holes 11 are formed in each forming block 8, and the number of the electric heating pipes 10 is the same as that of the accommodating holes 11, and the positions of the electric heating pipes correspond to those of the accommodating holes 11 one by one.
Through the arrangement, the heating efficiency and the heating area of the electric heating pipe 10 to the forming block 8 can be improved, and the heating effect of the electric heating pipe 10 to the forming block 8 is further improved.
Further, the depth of the receiving hole 11 is more than three-quarters of the height of the molding block 8.
Through the arrangement, the length of the electric heating pipe 10 is also greater than three-fourths of the height of the forming block 8, so that the electric heating pipe 10 can sufficiently heat the forming block 8, and each position of the forming block 8 is sufficiently heated.
In addition, the material of the forming block 8 is changed from the traditional HT250 material to H62 material, the H62 material has better heat conductivity, and can quickly absorb heat transferred from other structures, so that the sand core near the forming block 8 can be quickly hardened and formed.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims (3)

1. The utility model provides a hot core box for making water pump installing support psammitolite, includes upper core box (4) and lower core box (5), upper core box (4) lower surface is provided with die cavity (6), lower core box (5) upper surface is provided with die cavity (7) and penetrates sand hole (9) down, be provided with two shaping pieces (8), its characterized in that in die cavity (7) down: be provided with the auxiliary heating subassembly down between die cavity (7) and shaping piece (8), the auxiliary heating subassembly includes electric heating pipe (10) and accommodation hole (11), the vertical setting of electric heating pipe (10) is on the inner wall of die cavity (7) down, the vertical bottom surface of seting up at shaping piece (8) of accommodation hole (11), electric heating pipe (10) insert in accommodation hole (11) and laminate with the inner wall of accommodation hole (11).
2. The hot box for manufacturing the water pump mounting bracket sand core as claimed in claim 1, wherein: the number of the accommodating holes (11) is two, and the electric heating pipes (10) are the same as the number of the accommodating holes (11) and are in one-to-one correspondence with the positions of the accommodating holes (11).
3. The hot box for manufacturing the water pump mounting bracket sand core as claimed in claim 2, wherein: the depth of the accommodating hole (11) is more than three-quarters of the height of the forming block (8).
CN202122690651.6U 2021-11-04 2021-11-04 Hot core box for manufacturing water pump mounting bracket sand core Active CN216758052U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122690651.6U CN216758052U (en) 2021-11-04 2021-11-04 Hot core box for manufacturing water pump mounting bracket sand core

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122690651.6U CN216758052U (en) 2021-11-04 2021-11-04 Hot core box for manufacturing water pump mounting bracket sand core

Publications (1)

Publication Number Publication Date
CN216758052U true CN216758052U (en) 2022-06-17

Family

ID=81961630

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202122690651.6U Active CN216758052U (en) 2021-11-04 2021-11-04 Hot core box for manufacturing water pump mounting bracket sand core

Country Status (1)

Country Link
CN (1) CN216758052U (en)

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