CN110877093B - Core box for manufacturing sand core of hydraulic pump component - Google Patents
Core box for manufacturing sand core of hydraulic pump component Download PDFInfo
- Publication number
- CN110877093B CN110877093B CN201911356190.XA CN201911356190A CN110877093B CN 110877093 B CN110877093 B CN 110877093B CN 201911356190 A CN201911356190 A CN 201911356190A CN 110877093 B CN110877093 B CN 110877093B
- Authority
- CN
- China
- Prior art keywords
- core box
- sand core
- runner
- core
- sand
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 239000004576 sand Substances 0.000 claims abstract description 7
- 238000005461 lubrication Methods 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 6
- 238000005266 casting Methods 0.000 description 5
- 244000035744 Hura crepitans Species 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/06—Core boxes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/103—Multipart cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
- B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention relates to a core box for manufacturing a sand core of a hydraulic pump component, wherein the sand core adopts a split type structure and comprises a first sand core, a second sand core, a third sand core and a fourth sand core; the core box comprises a first sand core box, a second sand core box, a third sand core box and a fourth sand core box, wherein the first sand core box comprises a left core box and a right core box, the parting surfaces of the left core box and the right core box are in the vertical direction, and a first sand core cavity is formed after the left core box and the right core box are clamped; the second sand core box comprises a left core box and a right core box, the parting surfaces of the left core box and the right core box are vertical, and a second sand core cavity is formed after the left core box and the right core box are clamped; the third sand core box comprises a left core box and a right core box, the parting surfaces of the left core box and the right core box adopt step parting surfaces, and a third sand core cavity is formed after the left core box and the right core box are assembled; the fourth sand core box comprises a left core box and a right core box, the parting surfaces of the left core box and the right core box adopt step parting surfaces, and a fourth sand core cavity is formed after the left core box and the right core box are assembled. The invention has the advantages that: the invention has the advantages of less sand consumption, high efficiency and capability of improving the quality of the sand core.
Description
Technical Field
The invention belongs to the technical field of casting, and particularly relates to a core box for manufacturing a hydraulic pump component sand core.
Background
The hydraulic pump is a power element of the hydraulic system, which must have strong mechanical properties and high corrosion resistance, which puts high demands on the manufacture of the hydraulic pump components.
The hydraulic pump component is molded in a casting mode, the inner cavity of the casting sand core is complex, a large number of protruding blocks are contained in the casting sand core, a plurality of macropores communicated with the outside are formed in the casting sand core, a plurality of positioning blocks are arranged between sand box shells to divide a cavity formed by the sand box into two parts, and besides, the sand core is arranged, so that the design difficulty of the sand core is increased.
At present, the sand core assembly process of the traditional hydraulic pump part is more, a plurality of loose pieces and sand cores are needed, and the defect of the traditional sand core structure is that: multiple core boxes and more loose pieces are needed, the production process is complex, and time and cost are wasted; in addition, the traditional core box for manufacturing the sand core is horizontally or vertically divided, and when core pulling is performed, the situation that the lower core pulling plate is inclined can occur, so that the sand core is damaged.
Therefore, it is highly desirable to develop a core box for manufacturing a hydraulic pump component sand core that uses a small amount of sand, is efficient, and is capable of improving the quality of the sand core.
Disclosure of Invention
The invention aims to provide a core box for manufacturing a hydraulic pump component sand core, which has the advantages of less sand consumption, high efficiency and capability of improving the quality of the sand core.
In order to solve the following technical problems, the technical scheme of the invention is as follows: a core box for manufacturing a sand core of a hydraulic pump component, which is innovative in that:
the sand core of the hydraulic pump component adopts a split structure and comprises a first sand core, a second sand core, a third sand core and a fourth sand core,
the first sand core is provided with a first runner body which is horizontally arranged and a second runner body which is horizontally arranged and vertical to the first runner body, one end of the second runner body is connected with the middle part of the first runner body, and the middle part of the second runner body is provided with a third runner body which extends vertically upwards;
the lower surface of the first runner body of the first sand core is provided with a pair of symmetrically-arranged fourth runner upper embedded holes, the other end of the second runner body of the first sand core is provided with a first positioning block extending vertically downwards, the lower end surface of the first positioning block is provided with a positioning bulge, and both ends of the first runner body of the first sand core and the top end of the third runner body are provided with sand mold positioning round tables;
the center of the main body of the second sand core is provided with a shaft body with an axis which is vertically arranged and extends upwards out of the main body of the second sand core, and the periphery of the shaft body is symmetrically provided with a first lubrication flow passage body and a second lubrication flow passage body which are protruded out of the upper surface of the main body of the second sand core;
the upper surface of the main body of the second sand core is symmetrically provided with a fourth runner lower embedding hole positioned at the periphery of the shaft body, one end of the main body of the second sand core is provided with a second positioning block extending vertically upwards, and the upper end surface of the second positioning block is provided with a positioning embedding hole capable of accommodating the positioning protrusion of the first positioning block; a third positioning block is arranged at the other end of the main body of the second sand core, and the upper end surface of the third positioning block is provided with another positioning jogged hole;
the main body of the third sand core is a symmetrically arranged fourth runner body, and the fourth runner body is composed of a cylinder, an inclined transition body and an arc-shaped body which are sequentially arranged from top to bottom;
the upper end of the fourth runner body of the third sand core is provided with a fourth runner upper bulge which can be embedded into a fourth runner upper embedding hole, the lower end of the fourth runner body of the third sand core is provided with a fourth runner lower bulge which can be embedded into a fourth runner lower embedding hole, and one side surface of the middle part of the fourth runner body of the third sand core is provided with a fifth runner embedding hole;
the main body of the fourth sand core is a pair of fifth runner bodies which are mutually parallel to the axis and extend along the horizontal direction, and a sixth runner body is arranged between the pair of fifth runner bodies;
one end of the fifth runner body is provided with a fifth runner bulge which can be embedded into a fifth runner embedding hole, the other end of the fifth runner body is provided with a fourth positioning block, and the lower end surface of the fourth positioning block is provided with another positioning bulge which can be embedded into a positioning embedding hole of the third positioning block;
the core box comprises a first sand core box, a second sand core box, a third sand core box and a fourth sand core box,
the first sand core box comprises a left core box and a right core box, the parting surfaces of the left core box and the right core box are in the vertical direction, and a first sand core cavity is formed after the left core box and the right core box are assembled;
the second sand core box comprises a left core box and a right core box, the parting surfaces of the left core box and the right core box are in the vertical direction, and a second sand core cavity is formed after the left core box and the right core box are assembled;
the third sand core box comprises a left core box and a right core box, the parting surface of the left core box and the parting surface of the right core box adopt a step parting surface,
the step-shaped parting surface of the left core box comprises a first main parting surface and a first auxiliary parting surface arranged in the first main parting surface, the first main parting surface consists of a first upper vertical plane section, a first inclined plane section and a first lower vertical plane section which are sequentially arranged from top to bottom, the lower end of the first inclined plane section is inclined to the outer side of the left core box, the outer surface of the first lower vertical plane section is also provided with a convex parting boss,
the first auxiliary parting surface comprises a first upper vertical outer arc section, a first inclined outer arc section and a first lower vertical outer arc section, the first upper vertical outer arc section is arranged on the outer surface of the first upper vertical plane section, the first inclined outer arc section is arranged on the outer surface of the first inclined plane section and extends to the parting protrusion, and the first lower vertical outer arc section is arranged on the outer surface of the parting protrusion;
the step-shaped parting surface of the right core box comprises a second main parting surface and a second auxiliary parting surface arranged in the second main parting surface, the second main parting surface consists of a second upper vertical plane section, a second inclined plane section and a second lower vertical plane section which are sequentially arranged from top to bottom, the lower end of the second inclined plane section is inclined towards the inner side of the right core box, the outer surface of the second lower vertical plane section is also provided with a concave parting pit,
the second auxiliary parting surface comprises a second upper vertical inner arc section, a second inclined inner arc section and a second lower vertical inner arc section, the second upper vertical inner arc section is arranged on the outer surface of the second upper vertical plane section, the second inclined inner arc section is arranged on the outer surface of the second inclined plane section and extends into the parting pit, and the second lower vertical inner arc section is arranged on the inner surface of the parting pit;
the left core box and the right core box form a third sand core cavity after being assembled,
the first upper vertical outer arc section and the second upper vertical inner arc section are matched to form an arc-shaped body cavity of the third sand core,
the first inclined outer arc section and the second inclined inner arc section are matched to form an inclined transition body cavity of the third sand core,
the first lower vertical outer arc section and the second lower vertical inner arc section are matched to form a cylinder of a third sand core;
the fourth sand core box comprises a left core box and a right core box, the parting surfaces of the left core box and the right core box adopt step parting surfaces, and a fourth sand core cavity is formed after the left core box and the right core box are assembled.
Further, the outer surface of the bulge on the fourth flow channel is provided with a positioning cambered surface and a positioning plane, and the upper end surface of the bulge on the fourth flow channel is of a step-shaped structure; the fourth runner upper jogged hole is a structure matched with the fourth runner upper bulge.
The invention has the advantages that:
(1) The core box for manufacturing the hydraulic pump component sand core is of a split type structure, the sand cores forming the flow channels of the hydraulic pump component are reasonably divided and manufactured by combining the core box, the sand cores are assembled through the positioning protrusions and the positioning holes on the sand cores, complex core assembly is not needed, the core assembly accumulated error is small, the sand cores can be manufactured by injecting sand in the core box once, the production efficiency is high, and the production cost is reduced;
(2) The invention is used for manufacturing a core box of a sand core of a hydraulic pump component, wherein the outer surface of a bulge on a fourth runner of the sand core of the hydraulic pump component is provided with a positioning cambered surface and a positioning plane, the upper end surface of the bulge on the fourth runner is of a step-shaped structure, and an embedded hole on the fourth runner is of a structure matched with the bulge on the fourth runner, and the first sand core and the third sand core can be connected more firmly through step limiting connection;
(3) The invention is used for manufacturing the core box of the hydraulic pump component sand core, wherein the third core box comprises the left core box and the right core box, the parting surfaces of the left core box and the right core box adopt the step parting surfaces, parting can be directly carried out, core pulling is not needed, the damage of the sand core caused by no guiding during core pulling is avoided, the quality of the sand core is improved, and the production efficiency is greatly improved.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
Fig. 1 is an exploded view of a hydraulic pump unit core of the present invention.
Fig. 2 is a schematic structural view of the first sand core in fig. 1.
Fig. 3 is a schematic structural view of the second sand core in fig. 1.
Fig. 4 is a schematic structural view of the third sand core in fig. 1.
FIG. 5 is a schematic view of the fourth flow channel in FIG. 4
Fig. 6 is a schematic structural view of the fourth sand core in fig. 1.
Fig. 7 is a schematic diagram of a core box structure for manufacturing a third sand core of a hydraulic pump unit according to the present invention.
Fig. 8 is a schematic structural view of the left cartridge of fig. 7.
Fig. 9 is a schematic structural view of the right cartridge of fig. 7.
Detailed Description
The following examples will provide those skilled in the art with a more complete understanding of the present invention and are not intended to limit the invention to the embodiments described.
Examples
In the hydraulic pump component sand core of the embodiment, as shown in fig. 1, the hydraulic pump component sand core adopts a split type structure, and comprises a first sand core 1, a second sand core 2, a third sand core 3 and a fourth sand core 4.
As shown in fig. 2, the first sand core 1 has a first runner body 11 horizontally arranged, and a second runner body 12 horizontally arranged and perpendicular to the first runner body 11, one end of the second runner body 12 is connected with the middle part of the first runner body 11, and the middle part of the second runner body 12 is provided with a third runner body 13 extending vertically upwards.
The lower surface of the first runner body 11 of the first sand core 1 is provided with a pair of symmetrically arranged fourth runner upper jogged holes 14, the other end of the second runner body 12 of the first sand core 1 is provided with a first positioning block 15 which extends vertically downwards, the lower end surface of the first positioning block 15 is provided with a positioning bulge 16, and both ends of the first runner body 11 of the first sand core 1 and the top end of the third runner body 13 are provided with sand mold positioning round tables 17.
As shown in fig. 3, the main body center of the second sand core 2 is provided with a shaft body 21 with an axis vertically arranged and extending upwards out of the second sand core main body, and the periphery of the shaft body 21 is symmetrically provided with a first lubrication flow channel body 22 and a second lubrication flow channel body 23 protruding out of the upper surface of the second sand core main body.
The upper surface of the main body of the second sand core 2 is symmetrically provided with a fourth runner lower embedded hole 24 positioned at the periphery of the shaft body 21, one end of the main body of the second sand core 2 is provided with a second positioning block 25 extending vertically upwards, and the upper end surface of the second positioning block 25 is provided with a positioning embedded hole 26 which can accommodate the positioning protrusion 16 of the first positioning block 15; the other end of the main body of the second sand core 2 is provided with a third positioning block 27, and the upper end surface of the third positioning block 27 is provided with another positioning jogged hole 28.
Referring to fig. 4, the third sand core 3 has a main body of the third sand core 3 that is a fourth flow channel body 31 that is symmetrically arranged, and the specific structure of the fourth flow channel body 31, as shown in fig. 5, is composed of a cylinder 311, an inclined transition body 312 and an arc body 313 that are sequentially arranged from top to bottom.
The upper end of the fourth runner body 31 of the third sand core 3 is provided with a fourth runner upper protrusion 314 which can be embedded into the fourth runner upper embedding hole 14, the lower end of the fourth runner body 31 of the third sand core 3 is provided with a fourth runner lower protrusion 315 which can be embedded into the fourth runner lower embedding hole 26, and one side surface of the middle part of the fourth runner body 31 of the third sand core 3 is provided with a fifth runner embedding hole 316.
In order to make the connection between the first sand core 1 and the third sand core 3 firmer, the connection is limited by steps, that is, the outer surface of the upper protrusion 314 of the fourth runner is provided with a positioning cambered surface and a positioning plane, and the upper end surface of the upper protrusion 314 of the fourth runner is of a step-shaped structure; the fourth flow path upper fitting hole 16 is configured to mate with the fourth flow path upper protrusion 314.
As shown in fig. 6, the fourth sand core 4 has a main body of a fifth runner body 41 that is disposed parallel to each other along a horizontal direction, and a sixth runner body 42 is disposed between the pair of fifth runner bodies 41.
One end of the fifth runner body 41 is provided with a fifth runner protrusion 43 capable of being inserted into the fifth runner engaging hole 316, the other end of the fifth runner body 41 is provided with a fourth positioning block 44, and the lower end surface of the fourth positioning block 44 is provided with another positioning protrusion 45 capable of being inserted into the positioning engaging hole 28 of the third positioning block 27.
The hydraulic pump part sand core of this embodiment adopts split type structure, and carries out reasonable division to the sand core that forms each runner of hydraulic pump part to make in combination with the core box, carry out the core assembly through location arch and the locating hole on the sand core, need not complicated core assembly, the accumulated error of core assembly is little, and once penetrate the preparation of sand core in the core box, production efficiency is high, reduction in production cost.
The core box of the hydraulic pump component sand core is manufactured according to the embodiment, and comprises a first sand core box, a second sand core box, a third sand core box and a fourth sand core box.
The first sand core box comprises a left core box and a right core box, the parting surfaces of the left core box and the right core box are vertical, and a first sand core cavity is formed after the left core box and the right core box are assembled.
The second sand core box comprises a left core box and a right core box, the parting surfaces of the left core box and the right core box are vertical, and a second sand core cavity is formed after the left core box and the right core box are assembled.
The fourth sand core box comprises a left core box and a right core box, the parting surfaces of the left core box and the right core box adopt step parting surfaces, and a fourth sand core cavity is formed after the left core box and the right core box are assembled.
As shown in fig. 7, the third sand core box comprises a left core box 5 and a right core box 6, and the parting surfaces of the left core box 5 and the right core box 6 adopt step parting surfaces.
The step-shaped parting surface of the left core box 5 comprises a first main parting surface 51 and a first auxiliary parting surface 52 arranged in the first main parting surface 51, the first main parting surface 51 is composed of a first upper vertical plane section 511, a first inclined plane section 512 and a first lower vertical plane section 513 which are sequentially arranged from top to bottom, the lower end of the first inclined plane section 512 is inclined to the outer side of the left core box, and the outer surface of the first lower vertical plane section 511 is further provided with a raised parting boss 514.
The first secondary parting surface 52 includes a first upper vertical outer arc 521, a first inclined outer arc 522, and a first lower vertical outer arc 523, the first upper vertical outer arc 521 is disposed on the outer surface of the first upper vertical plane 511, the first inclined outer arc 522 is disposed on the outer surface of the first inclined plane 512 and extends to the parting protrusion 514, and the first lower vertical outer arc 523 is disposed on the outer surface of the parting protrusion 514.
The stepped parting surface of the right core box 6 includes a second main parting surface 61 and a second sub parting surface 62 provided in the second main parting surface 61, the second main parting surface 61 is composed of a second upper vertical plane section 611, a second inclined plane section 612 and a second lower vertical plane section 613 which are sequentially provided from top to bottom, the lower end of the second inclined plane section 612 is inclined to the inside of the right core box, and the outer surface of the second lower vertical plane section 613 is further provided with a concave parting pit 614.
The second secondary parting surface 62 includes a second upper vertical inner arc segment 621, a second inclined inner arc segment 622, and a second lower vertical inner arc segment 623, the second upper vertical inner arc segment 621 being disposed on the outer surface of the second upper vertical planar segment 611, the second inclined inner arc segment 622 being disposed on the outer surface of the second inclined planar segment 612 and extending into the parting pocket 614, the second lower vertical inner arc segment 623 being disposed on the inner surface of the parting pocket 614.
The left core box and the right core box are assembled to form a third sand core cavity, the first upper vertical outer arc section 521 and the second upper vertical inner arc section 621 are matched to form an arc-shaped body cavity of the third sand core 3, the first inclined outer arc section 522 and the second inclined inner arc section 622 are matched to form an inclined transition body cavity of the third sand core 3, and the first lower vertical outer arc section 523 and the second lower vertical inner arc section 623 are matched to form a cylinder of the third sand core.
The core box for manufacturing the hydraulic pump component sand core is used for manufacturing the core box of the hydraulic pump component sand core, wherein the third core box comprises a left core box and a right core box, the parting surfaces of the left core box and the right core box adopt step-shaped parting surfaces, parting can be directly performed, core pulling is not needed, damage to the sand core caused by no guiding during core pulling is avoided, the quality of the sand core is improved, and the production efficiency is greatly improved.
The following shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the following examples, which are set forth in the following description merely illustrate the principles of the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. A core box for manufacturing a sand core of a hydraulic pump component, characterized in that:
the sand core of the hydraulic pump component adopts a split structure and comprises a first sand core, a second sand core, a third sand core and a fourth sand core,
the first sand core is provided with a first runner body which is horizontally arranged and a second runner body which is horizontally arranged and vertical to the first runner body, one end of the second runner body is connected with the middle part of the first runner body, and the middle part of the second runner body is provided with a third runner body which extends vertically upwards;
the lower surface of the first runner body of the first sand core is provided with a pair of symmetrically-arranged fourth runner upper embedded holes, the other end of the second runner body of the first sand core is provided with a first positioning block extending vertically downwards, the lower end surface of the first positioning block is provided with a positioning bulge, and both ends of the first runner body of the first sand core and the top end of the third runner body are provided with sand mold positioning round tables;
the center of the main body of the second sand core is provided with a shaft body with an axis which is vertically arranged and extends upwards out of the main body of the second sand core, and the periphery of the shaft body is symmetrically provided with a first lubrication flow passage body and a second lubrication flow passage body which are protruded out of the upper surface of the main body of the second sand core;
the upper surface of the main body of the second sand core is symmetrically provided with a fourth runner lower embedding hole positioned at the periphery of the shaft body, one end of the main body of the second sand core is provided with a second positioning block extending vertically upwards, and the upper end surface of the second positioning block is provided with a positioning embedding hole capable of accommodating the positioning protrusion of the first positioning block; a third positioning block is arranged at the other end of the main body of the second sand core, and the upper end surface of the third positioning block is provided with another positioning jogged hole;
the main body of the third sand core is a symmetrically arranged fourth runner body, and the fourth runner body is composed of a cylinder, an inclined transition body and an arc-shaped body which are sequentially arranged from top to bottom;
the upper end of the fourth runner body of the third sand core is provided with a fourth runner upper bulge which can be embedded into a fourth runner upper embedding hole, the lower end of the fourth runner body of the third sand core is provided with a fourth runner lower bulge which can be embedded into a fourth runner lower embedding hole, and one side surface of the middle part of the fourth runner body of the third sand core is provided with a fifth runner embedding hole;
the main body of the fourth sand core is a pair of fifth runner bodies which are mutually parallel to the axis and extend along the horizontal direction, and a sixth runner body is arranged between the pair of fifth runner bodies;
one end of the fifth runner body is provided with a fifth runner bulge which can be embedded into a fifth runner embedding hole, the other end of the fifth runner body is provided with a fourth positioning block, and the lower end surface of the fourth positioning block is provided with another positioning bulge which can be embedded into a positioning embedding hole of the third positioning block;
the core box comprises a first sand core box, a second sand core box, a third sand core box and a fourth sand core box,
the first sand core box comprises a left core box and a right core box, the parting surfaces of the left core box and the right core box are in the vertical direction, and a first sand core cavity is formed after the left core box and the right core box are assembled;
the second sand core box comprises a left core box and a right core box, the parting surfaces of the left core box and the right core box are in the vertical direction, and a second sand core cavity is formed after the left core box and the right core box are assembled;
the third sand core box comprises a left core box and a right core box, the parting surface of the left core box and the parting surface of the right core box adopt a step parting surface,
the step-shaped parting surface of the left core box comprises a first main parting surface and a first auxiliary parting surface arranged in the first main parting surface, the first main parting surface consists of a first upper vertical plane section, a first inclined plane section and a first lower vertical plane section which are sequentially arranged from top to bottom, the lower end of the first inclined plane section is inclined to the outer side of the left core box, the outer surface of the first lower vertical plane section is also provided with a convex parting boss,
the first auxiliary parting surface comprises a first upper vertical outer arc section, a first inclined outer arc section and a first lower vertical outer arc section, the first upper vertical outer arc section is arranged on the outer surface of the first upper vertical plane section, the first inclined outer arc section is arranged on the outer surface of the first inclined plane section and extends to the parting protrusion, and the first lower vertical outer arc section is arranged on the outer surface of the parting protrusion;
the step-shaped parting surface of the right core box comprises a second main parting surface and a second auxiliary parting surface arranged in the second main parting surface, the second main parting surface consists of a second upper vertical plane section, a second inclined plane section and a second lower vertical plane section which are sequentially arranged from top to bottom, the lower end of the second inclined plane section is inclined towards the inner side of the right core box, the outer surface of the second lower vertical plane section is also provided with a concave parting pit,
the second auxiliary parting surface comprises a second upper vertical inner arc section, a second inclined inner arc section and a second lower vertical inner arc section, the second upper vertical inner arc section is arranged on the outer surface of the second upper vertical plane section, the second inclined inner arc section is arranged on the outer surface of the second inclined plane section and extends into the parting pit, and the second lower vertical inner arc section is arranged on the inner surface of the parting pit;
the left core box and the right core box form a third sand core cavity after being assembled,
the first upper vertical outer arc section and the second upper vertical inner arc section are matched to form an arc-shaped body cavity of the third sand core,
the first inclined outer arc section and the second inclined inner arc section are matched to form an inclined transition body cavity of the third sand core,
the first lower vertical outer arc section and the second lower vertical inner arc section are matched to form a cylinder of a third sand core;
the fourth sand core box comprises a left core box and a right core box, the parting surfaces of the left core box and the right core box adopt step parting surfaces, and a fourth sand core cavity is formed after the left core box and the right core box are assembled.
2. A core box for manufacturing a hydraulic pump unit sand core according to claim 1, characterized in that: the outer surface of the bulge on the fourth flow channel is provided with a positioning cambered surface and a positioning plane, and the upper end surface of the bulge on the fourth flow channel is of a step-shaped structure; the fourth runner upper jogged hole is a structure matched with the fourth runner upper bulge.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019108426132 | 2019-09-06 | ||
| CN201910842613 | 2019-09-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110877093A CN110877093A (en) | 2020-03-13 |
| CN110877093B true CN110877093B (en) | 2024-03-26 |
Family
ID=69731230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911356190.XA Active CN110877093B (en) | 2019-09-06 | 2019-12-25 | Core box for manufacturing sand core of hydraulic pump component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110877093B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4787435A (en) * | 1982-01-18 | 1988-11-29 | Fmc Corporation | Core box assembly with wear strip |
| CN201529746U (en) * | 2009-11-13 | 2010-07-21 | 江苏力源金河铸造有限公司 | Hot core box of hydraulic pump shell sand core |
| CN202943216U (en) * | 2012-12-20 | 2013-05-22 | 重庆擎一模具制造有限公司 | Inclined casting die for wall-thickness jumped hydraulic pump cases |
| CN105772632A (en) * | 2016-04-22 | 2016-07-20 | 南通华东油压科技有限公司 | Quadruple valve body casting and mold thereof |
| CN107138692A (en) * | 2017-06-27 | 2017-09-08 | 江苏力源金河铸造有限公司 | A kind of oil pump body shell structure |
| CN206839056U (en) * | 2017-05-25 | 2018-01-05 | 江苏远业液压机械有限公司 | A kind of hydraulic pump swash plate casting mould |
-
2019
- 2019-12-25 CN CN201911356190.XA patent/CN110877093B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4787435A (en) * | 1982-01-18 | 1988-11-29 | Fmc Corporation | Core box assembly with wear strip |
| CN201529746U (en) * | 2009-11-13 | 2010-07-21 | 江苏力源金河铸造有限公司 | Hot core box of hydraulic pump shell sand core |
| CN202943216U (en) * | 2012-12-20 | 2013-05-22 | 重庆擎一模具制造有限公司 | Inclined casting die for wall-thickness jumped hydraulic pump cases |
| CN105772632A (en) * | 2016-04-22 | 2016-07-20 | 南通华东油压科技有限公司 | Quadruple valve body casting and mold thereof |
| CN206839056U (en) * | 2017-05-25 | 2018-01-05 | 江苏远业液压机械有限公司 | A kind of hydraulic pump swash plate casting mould |
| CN107138692A (en) * | 2017-06-27 | 2017-09-08 | 江苏力源金河铸造有限公司 | A kind of oil pump body shell structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110877093A (en) | 2020-03-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10821638B2 (en) | Mobile phone middle plate having sectional outer frame | |
| CN210041470U (en) | Embedded type injection molding rotor assembly and motor using same | |
| CN104527008A (en) | Cooling water way structure of injection mould core | |
| CN110877093B (en) | Core box for manufacturing sand core of hydraulic pump component | |
| KR101243239B1 (en) | Gas vent of insertion type | |
| CN108711980B (en) | Block type iron core IPM plastic package forming rotor | |
| CN112366494B (en) | Method for manufacturing connector and connector thereof | |
| CN218976440U (en) | Split permanent magnet injection molding rotor structure and motor using same | |
| CN103586418B (en) | Crankcase high strength water channel core and high strength water channel core cover half | |
| CN102632202A (en) | Production technology for manufacturing automobile cylinder by aid of crankcase core module | |
| KR100859658B1 (en) | Dummy cell for pack battery and molding apparatus for manufacturing thereof | |
| CN212707797U (en) | Combined core male die | |
| CN215396488U (en) | Spacing card muscle structure | |
| US8845322B2 (en) | Mold assembly for making light guide plates | |
| CN107138692B (en) | A kind of oil pump body shell structure | |
| CN220030997U (en) | Split symmetrical splicing type injection molding structure | |
| CN216682948U (en) | Multi-slide block forming die | |
| CN217647429U (en) | Integral loose piece structure of conjoined exhaust manifold and mould thereof | |
| CN216241691U (en) | Connector for ceramic product | |
| CN211690882U (en) | Assembled wall body connected node and mould | |
| CN219600236U (en) | High-efficient combination formula injection moulding structure of inserting | |
| CN108730587A (en) | A kind of quadruple valve valve body moulding and its mold | |
| CN219522942U (en) | Oil cylinder sliding block type inclined core-pulling die structure | |
| CN217803277U (en) | Novel high-hardness hollow plastic rod manufacturing device | |
| CN214442876U (en) | Core shooting mold with multiple cavities and cavity stringing prevention function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |