A core box mold for casting large motor bases

Abstract

This invention provides a core box mold for casting large motor bases, belonging to the field of casting mold technology. The core box mold is manufactured based on the five-part structure of a large motor base sand core. The core box mold includes an inner cavity air hole sand core 1# core box for manufacturing inner cavity air hole sand core 1#, an outer cavity sand core 2# core box for manufacturing outer cavity sand core 2#, an outer cavity sand core 3# core box for manufacturing outer cavity sand core 3#, an outer cavity sand core 4# core box for manufacturing outer cavity sand core 4#, and an outer cavity sand core 5# core box for manufacturing outer cavity sand core 5#. These five core boxes are independent of each other. This invention provides a corresponding core box mold comprising five parts for the new integrated sand core structure of large motor bases, solving the manufacturing problem of the new integrated sand core and creating conditions for achieving boxless casting of the base.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology, specifically relating to a core box mold for casting large motor bases. Background Technology

[0002] Large motor bases are generally manufactured using a horizontal casting process involving box molding, core making, box assembly, and pouring. The minimum wall thickness for large motor bases is 5mm at the heat sink area, while the maximum thickness exceeds 80mm. This significant difference in wall thickness easily leads to shrinkage cavities and porosity defects. Current technology typically uses sand cores in the casting of large motor bases consisting of four vent sand cores, an inner cavity sand core, and five outer sand cores, totaling ten sand cores. Due to the large number of sand cores, the cast product exhibits increased surface defects, resulting in a significant reduction in surface quality. To address this issue, a composite sand core composed of five sand cores—inner cavity vent sand core #1, outer sand core #2, outer sand core #3, outer sand core #4, and outer sand core #5—has been designed. (See reference...) Figure 11 As shown, this significantly reduces the number of sand cores and the number of surface seams, improving the surface quality of the casting. Therefore, for the fabrication of the new integrated sand cores, a new core box mold needs to be designed to ensure the accuracy of sand core fabrication; hence, improvements are proposed. Utility Model Content

[0003] The technical problem solved by this utility model is to provide a core box mold for casting large motor bases. The purpose of this utility model is to create a corresponding core box mold for the new integrated sand core structure of large motor bases, thereby solving the problem of sand core manufacturing.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A core box mold for casting large motor bases is made according to the five-part structure of a large motor base sand core. The core box mold includes an inner cavity air hole sand core 1# core box for making inner cavity air hole sand core 1#, an outer cavity sand core 2# core box for making outer cavity sand core 2#, an outer cavity sand core 3# core box for making outer cavity sand core 3#, an outer cavity sand core 4# core box for making outer cavity sand core 4#, and an outer cavity sand core 5# core box for making outer cavity sand core 5#. The five core boxes are independent of each other.

[0006] Further defining the above scheme, the structure of the inner cavity air hole sand core 1# core box is as follows: it includes a base, and the upper part of the base is provided with four side plates. The four side plates form an inner cavity mold cavity and an air hole mold cavity for forming the inner cavity and air hole sand core. The lower part of each side plate is connected to the base through an anti-detachment guide rail. The outer side of the side plate is controlled to open and close by an opening mechanism. After the four side plates are closed, they are positioned by a positioning mechanism and locked by a locking mechanism. Each side plate is provided with an ejection mechanism. The center of the base is provided with a sand core position fixing structure. The inner side of the side plate is provided with a vertical flow obstruction structure forming module. The inside of the core box is also provided with a sand core slot forming module and a movable block. The movable block is fixed by a movable block fixing structure.

[0007] Further defining the above scheme, one of the side plates is divided into an upper side plate and a lower side plate, the lower side plate is controlled by a mold opening mechanism, and the upper side plate is positioned and connected to the lower side plate by a pin.

[0008] Further defining the above solution, the mold opening mechanism includes a lead screw seat fixed on the base, a lead screw screw screwed onto the lead screw seat, a U-shaped connecting seat fixed on the outer side of the side plate, and the lead screw screwing into the threaded hole on the U-shaped connecting seat.

[0009] Further defining the above scheme, the structure of the outer sand core #2 core box is as follows: it includes a core box #2 outer frame; a core box #2 movable block is provided inside the core box #2 outer frame; the core box #2 outer frame contains a core box #2 flow-blocking groove forming module, a core box #2 inner gating forming module, a core box #2 horizontal gating forming module, a core box #2 riser forming module, and a core box #2 venting groove forming module for forming various structures on the outer sand core #2; a core box #2 sand core positioning structure is provided inside the core box #2 outer frame; core box #2 lifting shafts are provided on both outer walls of the core box #2 outer frame; and core box #2 locking holes are provided on both sides of the core box #2 outer frame. The locking holes are cylindrical clamping rods on the mold, which are formed after core making and serve as channels for subsequent lock cores.

[0010] Further defining the above scheme, the structure of the outer sand core 3# core box is as follows: it includes a core box 3# outer frame, a core box 3# movable block is provided on the inner side of the core box 3# outer frame, and a core box 3# flow obstruction groove forming module, a core box 3# inner gating forming module, a core box 3# horizontal gating forming module, a core box 3# riser forming module, and a core box 3# venting groove forming module are provided inside the core box 3# outer frame for forming various structures on the outer sand core 3#. A core box 3# lifting shaft is provided on the outer walls of both sides of the core box 3# outer frame, and a core box 3# locking hole is provided on both sides of the core box 3# outer frame.

[0011] Further defining the above scheme, the structure of the outer sand core 4# core box is as follows: it includes a core box 4# outer frame, a core box 4# movable block is provided inside the core box 4# outer frame, and the core box 4# outer frame is provided with a core box 4# flow obstruction groove forming module, a core box 4# inner gating forming module, a core box 4# horizontal gating forming module, a core box 4# riser forming module, and a core box 4# venting groove forming module for forming various structures on the outer sand core 4#. The outer walls on both sides of the core box 4# outer frame are provided with core box 4# lifting shafts, and both sides of the core box 4# outer frame are provided with core box 4# locking holes.

[0012] Further defining the above scheme, the structure of the outer sand core 5# core box is as follows: it includes a core box 5# outer frame, a core box 5# movable block is provided inside the core box 5# outer frame, and the core box 5# outer frame is provided with a core box 5# flow obstruction groove forming module, a core box 5# inner gating forming module, a core box 5# horizontal gating forming module, a core box 5# riser forming module, a core box 5# sprue positioning module I, a core box 5# sprue positioning module II, and a core box 5# venting groove forming module for forming various structures on the outer sand core 5#. The core box 5# outer frame is provided with a core box 5# sand core positioning structure. The core box 5# lifting shaft is provided on both outer walls of the core box 5# outer frame. The core box 5# locking hole and core box 5# sand filling groove are provided on both sides of the core box 5# outer frame.

[0013] Advantages of this utility model compared to the prior art:

[0014] 1. This solution addresses the five-part structure of the new integrated sand core for large motor bases by creating a corresponding core box mold comprising five parts: inner cavity air hole sand core #1, outer sand core #2, outer sand core #3, outer sand core #4, and outer sand core #5. This solves the manufacturing problem of the new integrated sand core and creates conditions for achieving boxless casting of the base.

[0015] 2. This solution involves the fabrication of high-precision core box molds. All molds are made of metal and are machined using high-precision machine tools to ensure dimensional accuracy and the precision of sand core fabrication, thereby guaranteeing the quality of the castings.

[0016] 3. The outer core box of this design consists of four core boxes, forming the outer sand core shape of the machine base. The sprue, runner, ingate, riser, and vent are also made of these four core boxes. The outer core box of the machine base is also equipped with a locking device, a lateral flow restriction device, and a lower flow restriction device to ensure the stability of the mold during use. Attached Figure Description

[0017] Figure 1 This is a front view of the structure of the No. 1 core box of the inner cavity air hole sand core in this utility model;

[0018] Figure 2This is a top view of the structure of the No. 1 core box of the inner cavity air hole sand core in this utility model;

[0019] Figure 3 This utility model Figure 1 AA section view in the middle;

[0020] Figure 4 This utility model Figure 1 BB section view in the middle;

[0021] Figure 5 This is a front view of the outer sand core 2# core box in this utility model;

[0022] Figure 6 This utility model Figure 5 CC section view in the middle;

[0023] Figure 7 This is a front view of the outer sand core 3# core box in this utility model;

[0024] Figure 8 This utility model Figure 7 DD section view in the middle;

[0025] Figure 9 This is a front view of the outer sand core 4# core box in this utility model;

[0026] Figure 10 This is a front view of the outer sand core 5# core box in this utility model;

[0027] Figure 11 This is a schematic diagram of the sand cores manufactured using this core box mold. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0029] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0030] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] Please see Figure 1-11 The embodiments of this utility model are described in detail below.

[0032] Example: A core box mold for casting a large motor base. The core box mold is made according to the five-part structure of a large motor base sand core. The core box mold includes an inner cavity air hole sand core 1# core box 1 for making inner cavity air hole sand core 1#, an outer cavity sand core 2# core box 2 for making outer cavity sand core 2#, an outer cavity sand core 3# core box 3 for making outer cavity sand core 3#, an outer cavity sand core 4# core box 4 for making outer cavity sand core 4#, and an outer cavity sand core 5# core box 5 for making outer cavity sand core 5#. The five core boxes are independent of each other.

[0033] This embodiment addresses the five-part structure of a new integrated sand core for large motor bases by creating a corresponding #core box mold comprising five parts: inner cavity air hole sand core #1, outer sand core #2, outer sand core #3, outer sand core #4, and outer sand core #5. This solves the manufacturing problem of the new integrated sand core and creates conditions for achieving boxless casting of the base.

[0034] In one specific implementation: See Figure 1-4 As shown, the structure of the inner cavity air hole sand core 1# core box 1 is as follows: it includes a base 1-1, and four side plates 1-10 are provided on the upper part of the base 1-1. The four side plates 1-10 form an inner cavity mold cavity 1-8 and an air hole mold cavity 1-7 for the inner cavity and air hole sand core forming. The lower part of each side plate 1-10 is connected to the base 1-1 through an anti-detachment guide rail 1-9. The outer side of the side plate 1-10 is controlled to open and close by an opening mechanism 1-2. After the four side plates 1-10 are closed, they are positioned by a positioning mechanism 1-11 and locked by a locking mechanism 1-3. Each side plate 1-10 is provided with an ejection mechanism 1-4. The center of the base 1-1 is provided with a sand core position fixing structure 1-5. The inner side of the side plate 1-10 is provided with a vertical flow obstruction structure forming module 1-6. The inside of the core box is also provided with a sand core slot forming module 1-12 and a movable block 1-13. The movable block 1-13 is fixed by a movable block fixing structure 1-14.

[0035] Furthermore, one of the side plates 1-10 is divided into an upper side plate 1-15 and a lower side plate 1-16. The lower side plate 1-16 is controlled by a mold opening mechanism 1-2. The upper side plate 1-15 is positioned and connected to the lower side plate 1-16 by a pin to ensure accurate positioning of the upper and lower parts.

[0036] Furthermore, the mold opening mechanism 1-2 includes a lead screw seat 1-2-1 fixed on the base 1-1, with a lead screw 1-2-2 screwed onto the lead screw seat 1-2-1. A U-shaped connecting seat 1-2-3 is fixed on the outer surface of the side plate 1-10, and the lead screw 1-2-2 engages with a threaded hole on the U-shaped connecting seat 1-2-3. The locking mechanism 1-3 includes a locking rod and a locking pin. The sand core positioning structure 1-5 adopts a tapered pin structure. The ejection mechanism 1-4 adopts an ejector rod structure.

[0037] In one specific implementation: See Figure 5 , 6 As shown, the structure of the outer sand core 2# core box 2 is as follows: it includes a core box 2# outer frame 2-1, a core box 2# movable block 2-2 is provided on the inner side of the core box 2# outer frame 2-1, and the core box 2# outer frame 2-1 is provided with a core box 2# flow obstruction groove forming module 2-5, a core box 2# inner gating forming module 2-7, a core box 2# horizontal gating forming module 2-8, a core box 2# riser forming module 2-9, and a core box 2# venting groove forming module 2-10 for forming various structures on the outer sand core 2#. The core box 2# outer frame 2-1 is provided with a core box 2# sand core positioning structure 2-6, and core box 2# lifting shafts 2-3 are provided on the outer walls of both sides of the core box 2# outer frame 2-1. Core box 2# locking holes 2-4 are provided on both sides of the core box 2# outer frame 2-1.

[0038] In one specific implementation: See Figure 7 , 8 As shown, the structure of the outer sand core 3# core box 3 is as follows: it includes a core box 3# outer frame 3-1, a core box 3# movable block 3-2 is provided on the inner side of the core box 3# outer frame 3-1, and the core box 3# outer frame 3-1 is provided with a core box 3# flow obstruction groove forming module 3-4, a core box 3# inner gating forming module 3-6, a core box 3# horizontal gating forming module 3-5, a core box 3# riser forming module 3-9, and a core box 3# venting groove forming module 3-8 for forming various structures on the outer sand core 3#. The core box 3# lifting shaft 3-3 is provided on the outer walls of both sides of the core box 3# outer frame 3-1, and a core box 3# locking hole 3-7 is provided on both sides of the core box 3# outer frame 3-1.

[0039] In one specific implementation: See Figure 9As shown, the structure of the outer sand core 4# core box 4 is as follows: it includes a core box 4# outer frame 4-1, a core box 4# movable block 4-2 is provided on the inner side of the core box 4# outer frame 4-1, and the core box 4# outer frame 4-1 is provided with a core box 4# flow obstruction groove forming module 4-9, a core box 4# inner gating forming module 4-7, a core box 4# horizontal gating forming module 4-8, a core box 4# riser forming module 4-3, and a core box 4# venting groove forming module 4-4 for forming various structures on the outer sand core 4#. The outer walls on both sides of the core box 4# outer frame 4-1 are provided with core box 3# lifting shafts 4-5, and both sides of the core box 4# outer frame 4-1 are provided with core box 4# locking holes 4-6.

[0040] In one specific implementation: See Figure 10 As shown, the structure of the outer sand core 5# core box 5 is as follows: it includes a core box 5# outer frame 5-1, a core box 5# movable block 5-2 is provided on the inner side of the core box 5# outer frame 5-1, and the core box 5# outer frame 5-1 is provided with a core box 5# flow-blocking groove forming module 5-13, a core box 5# inner gating forming module 5-9, a core box 5# horizontal gating forming module 5-10, and a core box 5# riser forming module 5 for forming various structures on the outer sand core 5#. -3, Core Box 5# Direct Sprue Positioning I 5-4, Core Box 5# Direct Sprue Positioning II 5-11, Core Box 5# Air Outlet Groove Forming Module 5-5, The Core Box 5# Outer Frame 5-1 is provided with a Core Box 5# Sand Core Positioning Structure 5-12 inside, The Core Box 5# Outer Frame 5-1 is provided with a Core Box 5# Lifting Shaft 5-7 on both sides of the outer wall of the Core Box 5# Outer Frame 5-1, The Core Box 5# Outer Frame 5-1 is provided with a Core Box 5# Locking Hole 5-8 and a Core Box 5# Sand Filling Groove 5-14 on both sides of the Core Box 5# Outer Frame 5-1.

[0041] In this embodiment, the outer core box consists of four core boxes, forming the outer sand core shape of the machine base. The sprue, runner, ingate, riser, and vent are also made of these four core boxes. The outer core box of the machine base is also equipped with a locking device, a lateral flow-limiting device, and a lower flow-limiting device to ensure the stability of the mold during use.

[0042] In this embodiment, the outer frame of each core box is made of HT250, the inner material is ZL107, and the protective plate material is Q235. The dimensional deviation of the core box working surface is manufactured to IT11 grade precision, the surface roughness of the mold working surface, parting surface, and movable block mating surface is manufactured to Ra3.2um, and the flatness of the mold parting surface is <0.12mm.

[0043] The high-precision core box molds produced in this embodiment are all made of metal and are formed by high-precision machine tools to ensure the dimensional accuracy of the molds and the accuracy of sand core production, thereby ensuring the quality of the castings.

[0044] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A core box mold for casting large motor bases, characterized in that: The core box mold is made according to the five-part structure of the large motor base sand core. The core box mold includes an inner cavity air hole sand core 1# core box (1) for making inner cavity air hole sand core 1#, an outer sand core 2# core box (2) for making outer sand core 2#, an outer sand core 3# core box (3) for making outer sand core 3#, an outer sand core 4# core box (4) for making outer sand core 4#, and an outer sand core 5# core box (5) for making outer sand core 5#. The five core boxes are independent of each other. The structure of the inner cavity air hole sand core 1# core box (1) is as follows: it includes a base (1-1), and the upper part of the base (1-1) is provided with four side plates (1-10). The four side plates (1-10) form an inner cavity mold cavity (1-8) and an air hole mold cavity (1-7) for the molding of the inner cavity and air hole sand core. The lower part of each side plate (1-10) is connected to the base (1-1) through an anti-detachment guide rail (1-9). The outer side of the side plate (1-10) is controlled to open and close by a mold opening mechanism (1-2). The four side plates (1-10) 0) After closing, it is positioned by the positioning mechanism (1-11) and locked by the locking mechanism (1-3). The side plate (1-10) is provided with an ejection mechanism (1-4). The base (1-1) is provided with a sand core position fixing structure (1-5) at the center. The side plate (1-10) is provided with a vertical flow blocking structure forming module (1-6) on the inner side. The core box is also provided with a sand core slot forming module (1-12) and a movable block (1-13). The movable block (1-13) is fixed by the movable block fixing structure (1-14).

2. The core box mold for casting a large motor base according to claim 1, characterized in that: One of the side plates (1-10) is divided into an upper side plate (1-15) and a lower side plate (1-16). The lower side plate (1-16) is controlled by a mold opening mechanism (1-2), and the upper side plate (1-15) is positioned and connected to the lower side plate (1-16) by a pin.

3. The core box mold for casting a large motor base according to claim 1, characterized in that: The mold opening mechanism (1-2) includes a lead screw seat (1-2-1) fixed on the base (1-1), a lead screw (1-2-2) screwed onto the lead screw seat (1-2-1), and a U-shaped connecting seat (1-2-3) fixed on the outer side of the side plate (1-10). The lead screw (1-2-2) screws into the threaded hole on the U-shaped connecting seat (1-2-3).

4. The core box mold for casting a large motor base according to claim 1, characterized in that: The structure of the outer sand core 2# core box (2) is as follows: it includes a core box 2# outer frame (2-1), a core box 2# movable block (2-2) is provided on the inner side of the core box 2# outer frame (2-1), a core box 2# flow barrier groove forming module (2-5), a core box 2# inner gating forming module (2-7), a core box 2# horizontal gating forming module (2-8), a core box 2# riser forming module (2-9), and a core box 2# venting groove forming module (2-10) for forming various structures on the outer sand core 2#, a core box 2# sand core positioning structure (2-6) is provided inside the core box 2# outer frame (2-1), a core box 2# lifting shaft (2-3) is provided on the outer walls on both sides of the core box 2# outer frame (2-1), and a core box 2# locking hole (2-4) is provided on both sides of the core box 2# outer frame (2-1).

5. A core box mold for casting a large motor base according to claim 1, characterized in that: The structure of the outer sand core 3# core box (3) is as follows: it includes a core box 3# outer frame (3-1), a core box 3# movable block (3-2) is provided on the inner side of the core box 3# outer frame (3-1), and the core box 3# outer frame (3-1) is provided with a core box 3# flow obstruction groove forming module (3-4), a core box 3# inner gating forming module (3-6), a core box 3# horizontal gating forming module (3-5), a core box 3# riser forming module (3-9), and a core box 3# venting groove forming module (3-8) for forming various structures on the outer sand core 3#. The core box 3# lifting shaft (3-3) is provided on the outer walls on both sides of the core box 3# outer frame (3-1), and a core box 3# locking hole (3-7) is provided on both sides of the core box 3# outer frame (3-1).

6. A core box mold for casting a large motor base according to claim 1, characterized in that: The structure of the outer sand core 4# core box (4) is as follows: it includes a core box 4# outer frame (4-1), a core box 4# movable block (4-2) is provided on the inner side of the core box 4# outer frame (4-1), and the core box 4# outer frame (4-1) is provided with a core box 4# flow barrier groove forming module (4-9), a core box 4# inner gating forming module (4-7), a core box 4# horizontal gating forming module (4-8), a core box 4# riser forming module (4-3), and a core box 4# venting groove forming module (4-4) for forming various structures on the outer sand core 4#. The core box 4# lifting shaft (4-5) is provided on the outer walls on both sides of the core box 4# outer frame (4-1), and a core box 4# locking hole (4-6) is provided on both sides of the core box 4# outer frame (4-1).

7. A core box mold for casting a large motor base according to claim 1, characterized in that: The structure of the outer sand core 5# core box (5) is as follows: it includes a core box 5# outer frame (5-1), a core box 5# movable block (5-2) is provided inside the core box 5# outer frame (5-1), and the core box 5# outer frame (5-1) is provided with a core box 5# flow barrier groove forming module (5-13), a core box 5# inner gating forming module (5-9), a core box 5# horizontal gating forming module (5-10), and a core box 5# riser forming module (5-3) for forming various structures on the outer sand core 5#. The core box 5# direct sprue positioning module I (5-4), the core box 5# direct sprue positioning module II (5-11), and the core box 5# air outlet groove forming module (5-5) are provided. The core box 5# outer frame (5-1) is provided with a core box 5# sand core positioning structure (5-12). The core box 5# lifting shaft (5-7) is provided on both sides of the outer wall of the core box 5# outer frame (5-1). The core box 5# locking hole (5-8) and the core box 5# sand filling groove (5-14) are provided on both sides of the core box 5# outer frame (5-1).

Images