CN111099498A - Hanging structure and hanging method of 3D printing sand core - Google Patents
Hanging structure and hanging method of 3D printing sand core Download PDFInfo
- Publication number
- CN111099498A CN111099498A CN201911248573.5A CN201911248573A CN111099498A CN 111099498 A CN111099498 A CN 111099498A CN 201911248573 A CN201911248573 A CN 201911248573A CN 111099498 A CN111099498 A CN 111099498A
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- Prior art keywords
- lifting
- lifting appliance
- sand core
- hole
- groove
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/62—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled
- B66C1/66—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means comprising article-engaging members of a shape complementary to that of the articles to be handled for engaging holes, recesses, or abutments on articles specially provided for facilitating handling thereof
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention provides a hanging structure and a hanging method of a 3D printing sand core, wherein the hanging method is implemented through the hanging structure, and the process is as follows: in the 3D printing sand core design process, a hoisting hole groove is reserved in the sand core, the hoisting hole groove is positioned at the middle upper part of the sand core, and an opening of the hoisting hole groove is positioned on the upper surface of the sand core; the lifting hole groove consists of a lifting appliance loading hole and a lifting appliance supporting groove, the lifting appliance loading hole extends into the sand core, and the lifting appliance supporting groove is ectopic with the lifting appliance loading hole but communicated with the tail end of the lifting appliance loading hole; the lifting hole groove and the lifting appliance are matched, the lifting appliance enters the lifting hole groove through the lifting appliance loading hole, then the lifting appliance is clamped and fixed through the lifting appliance supporting groove, and finally the lifting appliance is lifted through external lifting equipment to realize lifting of the sand core. The lifting device effectively solves the problem that a lifting structure of the sand core cannot be pre-buried in the lifting process of the large 3D printing sand core, and the lifting process is safe and stable, convenient to lift and convenient to popularize and utilize due to the matching of the lifting hole groove and the lifting tool.
Description
Technical Field
The invention belongs to the field of casting processing, and relates to a hanging structure and a hanging method of a 3D printing sand core.
Background
In recent years, the sand mold 3D printing technology has been rapidly applied to the field of casting processing, and becomes an important technology for shortening the development period and reducing the development cost in casting. Compared with the traditional sand mold preparation process, the most important characteristic of the 3D printing of the sand mold is a digital mold-free casting technology. Because can't be directly through pre-buried core bone or cable suspension device, the hoist and mount of 3D printing sand mould, psammitolite mainly through the suspender or design sand matter lifting handle etc. in the sand mould outside. However, for hoisting and transporting the sand core, the hoisting and transporting by using the hoisting belt often has the problems of damage to a molding surface, unstable gravity center and the like. On one hand, the sand lifting handle increases the size of the sand core, not only increases the printing cost, but also is easily limited by the size of the printing equipment; on the other hand, in the mould assembling fastening process, the mould assembling fastening process generally needs to be sawed and ground at the later stage, and the precision of a forming surface is influenced.
Disclosure of Invention
The invention mainly solves the problem that a sand core lifting structure cannot be pre-buried in the lifting process of the large 3D printing sand core. On the premise of not damaging the molding surface of the sand core, a safe and stable lifting tool and a lifting method are provided, a lifting hole groove is reserved in the sand core, lifting can be completed by means of a lifting appliance which is manufactured by matching with the lifting hole groove, and the lifting appliance can be removed after lifting is completed, so that normal box closing and pouring can be completed.
The invention aims to provide the following technical scheme:
in a first aspect, the present invention provides a hanging method for a 3D printing sand core, comprising the following steps:
in the 3D printing sand core design process, a hoisting hole groove is reserved in the sand core, the hoisting hole groove is positioned at the middle upper part of the sand core, and an opening of the hoisting hole groove is positioned on the upper surface of the sand core;
the lifting hole groove consists of a lifting appliance loading hole and a lifting appliance supporting groove, the lifting appliance loading hole extends into the sand core, and the lifting appliance supporting groove is ectopic with the lifting appliance loading hole but communicated with the tail end of the lifting appliance loading hole;
the lifting hole groove and the lifting appliance are matched, the lifting appliance enters the lifting hole groove through the lifting appliance loading hole, then the lifting appliance is clamped and fixed through the lifting appliance supporting groove, and finally the lifting appliance is lifted through external lifting equipment to realize lifting of the sand core.
In a second aspect, the present invention provides a hanging structure for a 3D printing sand core, for implementing the hanging method according to the first aspect, the hanging structure comprising: a hoisting hole groove and a lifting appliance matched with the hoisting hole groove are reserved in the sand core;
the lifting hole groove is positioned at the middle upper part of the sand core, the opening of the lifting hole groove is arranged on the upper surface, the lifting hole groove consists of a lifting appliance loading hole and a lifting appliance supporting groove, and the lifting appliance supporting groove and the lifting appliance loading hole are heterotopic but are communicated with the tail end of the lifting appliance loading hole;
the lifting appliance comprises a lifting appliance supporting arm, a lifting rod and lifting rings, wherein the lifting rod is fixed on the lifting appliance supporting arm, the lifting rings are fixed at the uppermost end of the lifting rod, the lifting appliance supporting arm is positioned in the lifting appliance supporting groove after the lifting appliance and the lifting hole groove are assembled, and the lifting rod is positioned in a lifting appliance loading hole.
According to the hanging structure and the hanging method for the 3D printing sand core, provided by the invention, beneficial technical effects are brought:
(1) the hanger used by the method is simple to prepare, safe and durable;
(2) the lifting hole groove is matched with the lifting appliance, so that the lifting process is safe and stable, and the lifting is convenient;
(3) according to the invention, the size of the sand core is not increased by the lifting hole slot, the printing space of 3D printing equipment can be fully utilized, and the molding surface is prevented from being damaged; meanwhile, the lifting hole groove is beneficial to exhaust in the casting pouring process, and is matched with an air hole and the like for use, so that the defects of casting air holes and the like can be reduced.
Drawings
FIG. 1 shows a top and side cross-sectional view of a lifting eye socket in a preferred embodiment of the invention;
fig. 2 shows a schematic view of a spreader structure in a preferred embodiment of the invention.
Detailed Description
The invention is explained in more detail below with reference to the figures and examples. The features and advantages of the present invention will become more apparent from the description.
According to a first aspect of the present invention, as shown in fig. 1 and 2, the present invention provides a hanging method for a 3D printing sand core, the hanging method comprising the steps of:
in the 3D printing sand core design process, a hoisting hole groove is reserved in the sand core, the hoisting hole groove is positioned at the middle upper part of the sand core, and an opening of the hoisting hole groove is positioned on the upper surface of the sand core;
the lifting hole groove consists of a lifting appliance loading hole and a lifting appliance supporting groove, the lifting appliance loading hole extends into the sand core, and the lifting appliance supporting groove is ectopic with the lifting appliance loading hole but communicated with the tail end of the lifting appliance loading hole;
the lifting hole groove and the lifting appliance are matched, the lifting appliance enters the lifting hole groove through the lifting appliance loading hole, then the lifting appliance is clamped and fixed through the lifting appliance supporting groove, and finally the lifting of the sand core is realized through external lifting equipment such as a crane lifting appliance. And after the lifting is finished, removing the lifting appliance, and then normally pouring the sand mould in a mould assembling manner.
In the invention, one or more lifting hole grooves can be arranged, and when one lifting hole groove is arranged, the symmetrical center of the lifting hole groove is positioned right above the center of mass of the sand core; when the handling hole groove is a plurality of, fortune hole groove all is located the well upper portion of psammitolite, and is the symmetric distribution to psammitolite focus is stable during the messenger handling.
In the invention, the edge of the lifting hole groove is ensured to have a certain sand eating amount, and the distance between the lifting hole groove and the outer edge forming surface is preferably not less than 100 mm; the distance between the lifting appliance supporting groove and the upper surface of the sand core is not less than 100 mm.
The lifting appliance comprises a lifting appliance supporting arm, a lifting rod and a lifting ring, wherein the lifting rod is fixed on the lifting appliance supporting arm, the lifting ring is fixed at the uppermost end of the lifting rod, after the lifting appliance is assembled with a lifting hole groove, the lifting appliance supporting arm is positioned in the lifting appliance supporting groove, and the lifting rod is positioned in a lifting appliance installing hole;
the lifting appliance supporting arm and the lifting rod are both obtained by assembling or welding circular tubes or circular rod structures, and are convenient to insert into the lifting hole groove and finish fixing.
In the invention, the circular tubes or the circular rods forming the supporting arms of the lifting appliance are all on the same plane, namely the heights of the circular tubes or the circular rods are the same. Thus, the supporting arms of the lifting appliance extend into the sand core to the same depth.
Preferably, the structure of hoist support arm is symmetrical structure for the psammitolite atress is more even.
More preferably, the spreader support arms are m-, X-or I-shaped.
Correspondingly, the main section of the hanger supporting groove is of a symmetrical structure such as a Chinese character 'mi', an X-shaped or I-shaped structure, and the surface matched with the hanger supporting arm is of an arc surface structure.
In the invention, the size of the lifting appliance loading hole is slightly larger than that of the lifting appliance, and a gap of 3-5 mm is generally ensured between the lifting appliance and the lifting appliance when the lifting appliance is loaded. The length of the supporting groove of the lifting appliance is slightly longer than that of the supporting arm of the lifting appliance by 5-10 mm, and the radius of the supporting groove of the lifting appliance is the same as or slightly larger than that of the supporting arm of the lifting appliance, so that the lifting appliance is convenient to clamp and fix.
The strength of the hoisting hole slot structure is checked, and the check is carried out according to a certain safety factor by calculating the weight of the sand core and combining the strength of the sand core. The safety coefficient generally takes 1.5-2.0 to ensure that the depth of the lifting hole groove meets the requirement.
The depth of the hole groove is 200 mm-400 mm for sand core with weight of 500 kg-1 t.
In the invention, when the upper surface of the sand core is a molding surface, the lifting hole groove part can be designed into a core assembly structure, namely, a 3D printing method is adopted to prepare the sand core matched with the lifting hole groove, and after lifting is finished, the sand core of the lifting hole groove is assembled, namely, the upper molding surface is not influenced.
According to a second aspect of the invention, as shown in fig. 1 and 2, the 3D printing sand core hanging structure provided by the invention comprises a hanging hole groove reserved in the sand core and a lifting appliance matched with the hanging hole groove;
the lifting hole groove is positioned at the middle upper part of the sand core, the opening of the lifting hole groove is arranged on the upper surface, the lifting hole groove consists of a lifting appliance loading hole and a lifting appliance supporting groove, and the lifting appliance supporting groove and the lifting appliance loading hole are heterotopic but are communicated with the tail end of the lifting appliance loading hole;
the lifting appliance comprises a lifting appliance supporting arm, a lifting rod and lifting rings, wherein the lifting rod is fixed on the lifting appliance supporting arm, the lifting rings are fixed at the uppermost end of the lifting rod, the lifting appliance supporting arm is positioned in the lifting appliance supporting groove after the lifting appliance and the lifting hole groove are assembled, and the lifting rod is positioned in a lifting appliance loading hole.
In the invention, one or more lifting hole grooves can be arranged, and when one lifting hole groove is arranged, the symmetrical center of the lifting hole groove is positioned right above the center of mass of the sand core; when the lifting hole grooves are multiple, the lifting hole grooves are all located on the middle upper portion of the sand core and are symmetrically distributed. The edge of the lifting hole groove is ensured to have certain sand eating amount, and the distance between the lifting hole groove and the outer edge forming surface is preferably not less than 100 mm; the distance between the hanger supporting groove and the non-forming surface is not less than 100 mm.
In the invention, the hanger supporting arm and the hanger rod are both assembled or welded by a round pipe or round rod structure. The round pipes or round bars forming the supporting arms of the lifting appliance are all on the same plane, namely the heights of the round pipes or round bars are the same. Thus, the supporting arms of the lifting appliance extend into the sand core to the same depth.
Furthermore, the structure of the lifting appliance supporting arm is of a symmetrical structure, so that the stress of the sand core is more uniform.
Furthermore, the hanger supporting arm is in a shape like a Chinese character mi, an X or an I.
Correspondingly, the main section of the hanger supporting groove is of a symmetrical structure such as a Chinese character 'mi', an X-shaped or I-shaped structure, and the surface matched with the hanger supporting arm is of an arc surface structure.
In the invention, the size of the lifting appliance loading hole is slightly larger than that of the lifting appliance, and a gap of 3-5 mm is generally ensured between the lifting appliance and the lifting appliance when the lifting appliance is loaded. The length of the supporting groove of the lifting appliance is slightly longer than that of the supporting arm of the lifting appliance by 5-10 mm, and the radius of the supporting groove of the lifting appliance is the same as or slightly larger than that of the supporting arm of the lifting appliance, so that the lifting appliance is convenient to clamp and fix.
It should be noted that the lifting hole slot and the lifting appliance structure related to the hanging structure and the hanging method in the invention can be properly changed according to the structural characteristics of the sand core. For example, the transformation of a swing support arm structure, the change of a lifting ring into a lifting hook, etc.
The present invention has been described above in connection with preferred embodiments, but these embodiments are merely exemplary and merely illustrative. On the basis of the above, the invention can be subjected to various substitutions and modifications, and the substitutions and the modifications are all within the protection scope of the invention.
Claims (10)
1. The hanging method of the 3D printing sand core is characterized by comprising the following steps:
in the 3D printing sand core design process, a hoisting hole groove is reserved in the sand core, the hoisting hole groove is positioned at the middle upper part of the sand core, and an opening of the hoisting hole groove is positioned on the upper surface of the sand core;
the lifting hole groove consists of a lifting appliance loading hole and a lifting appliance supporting groove, the lifting appliance loading hole extends into the sand core, and the lifting appliance supporting groove is ectopic with the lifting appliance loading hole but communicated with the tail end of the lifting appliance loading hole;
the lifting hole groove and the lifting appliance are matched, the lifting appliance enters the lifting hole groove through the lifting appliance loading hole, then the lifting appliance is clamped and fixed through the lifting appliance supporting groove, and finally the lifting appliance is lifted through external lifting equipment to realize lifting of the sand core.
2. The hanging method for the 3D printing sand core according to claim 1, wherein the lifting hole slot can be one or more;
when one lifting hole groove is formed, the symmetrical center of the lifting hole groove is positioned right above the center of mass of the sand core; when the lifting hole grooves are multiple, the lifting hole grooves are all located on the middle upper portion of the sand core and are symmetrically distributed.
3. The hanging method of the 3D printing sand core according to claim 1, wherein the distance from the lifting hole groove to the outer edge molding surface is not less than 100mm, and the distance from the lifting tool support groove to the upper surface of the sand core is not less than 100 mm.
4. The method for hanging a 3D printing sand core according to claim 1, wherein the hanger comprises a hanger support arm, a hanger rod and a hanging ring, the hanger rod is fixed on the hanger support arm, the hanging ring is fixed at the uppermost end of the hanger rod, after the assembly of the hanger and the hanging hole groove is completed, the hanger support arm is positioned in the hanger support groove, and the hanger rod is positioned in the hanger installation hole;
wherein, the hanger supporting arm and the hanger rod are both assembled or welded by a round pipe or a round rod structure.
5. The hanging method for the 3D printing sand core as claimed in claim 4, wherein the round pipes or round bars constituting the supporting arms of the lifting appliance are all on the same plane, i.e. the heights of the round pipes or round bars are the same.
6. The method of hanging a 3D printed sand core as recited in claim 5, wherein the structure of the hanger support arms is a symmetrical structure.
7. The hanging method for the 3D printing sand core as claimed in claim 6, wherein the structure of the supporting arm of the lifting appliance is a symmetric structure with a shape of Chinese character mi, X or I.
8. The hanging method for the 3D printing sand core according to claim 7, wherein the main section of the hanger supporting groove is a symmetrical structure, and the surface of the hanger supporting groove matched with the hanger supporting arm is an arc surface structure.
9. The hanging method of the 3D printing sand core according to claim 8, wherein the size of a lifting appliance installation hole is slightly larger than that of the lifting appliance, and a gap of 3-5 mm exists between the lifting appliance and the lifting appliance when the lifting appliance is installed; the length of the supporting groove of the lifting appliance is slightly longer than that of the supporting arm of the lifting appliance by 5-10 mm, and the radius of the supporting groove of the lifting appliance is the same as or slightly larger than that of the supporting arm of the lifting appliance.
10. A hanger for a 3D printing sand core for carrying out the method of any one of claims 1 to 9, wherein the hanger structure comprises a lifting hole slot reserved in the interior of the sand core and a lifting tool cooperating with the lifting hole slot;
the lifting hole groove is positioned at the middle upper part of the sand core, the opening of the lifting hole groove is arranged on the upper surface, the lifting hole groove consists of a lifting appliance loading hole and a lifting appliance supporting groove, and the lifting appliance supporting groove and the lifting appliance loading hole are heterotopic but are communicated with the tail end of the lifting appliance loading hole;
the lifting appliance comprises a lifting appliance supporting arm, a lifting rod and lifting rings, wherein the lifting rod is fixed on the lifting appliance supporting arm, the lifting rings are fixed at the uppermost end of the lifting rod, the lifting appliance supporting arm is positioned in the lifting appliance supporting groove after the lifting appliance and the lifting hole groove are assembled, and the lifting rod is positioned in a lifting appliance loading hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911248573.5A CN111099498A (en) | 2019-12-09 | 2019-12-09 | Hanging structure and hanging method of 3D printing sand core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911248573.5A CN111099498A (en) | 2019-12-09 | 2019-12-09 | Hanging structure and hanging method of 3D printing sand core |
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| Publication Number | Publication Date |
|---|---|
| CN111099498A true CN111099498A (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911248573.5A Pending CN111099498A (en) | 2019-12-09 | 2019-12-09 | Hanging structure and hanging method of 3D printing sand core |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113135494A (en) * | 2021-05-14 | 2021-07-20 | 天津爱思达航天科技有限公司 | Non-convex hoisting mechanism |
| CN113173484A (en) * | 2021-04-29 | 2021-07-27 | 共享智能铸造产业创新中心有限公司 | Sand mould hoisting structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA958522A (en) * | 1970-10-12 | 1974-12-03 | Karl E. Neumeir | Removable eye bolt for lifting heavy objects |
| CN201510919U (en) * | 2009-09-17 | 2010-06-23 | 上海建设路桥机械设备有限公司 | Material distributing disk of vertical impact crusher and hanging tool thereof |
| CN203428740U (en) * | 2013-08-29 | 2014-02-12 | 广西南南铝加工有限公司 | Hoisting tool |
| CN205056954U (en) * | 2015-10-10 | 2016-03-02 | 四川南车共享铸造有限公司 | 3D prints psammitolite |
| CN105598381A (en) * | 2016-02-02 | 2016-05-25 | 宁夏共享模具有限公司 | Sand core manufacturing process based on 3D printing and sand core hoisting tool based on 3D printing |
| CN207581208U (en) * | 2017-09-27 | 2018-07-06 | 宜昌南玻硅材料有限公司 | A kind of dual-purpose crystal holder boom hoisting |
-
2019
- 2019-12-09 CN CN201911248573.5A patent/CN111099498A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA958522A (en) * | 1970-10-12 | 1974-12-03 | Karl E. Neumeir | Removable eye bolt for lifting heavy objects |
| CN201510919U (en) * | 2009-09-17 | 2010-06-23 | 上海建设路桥机械设备有限公司 | Material distributing disk of vertical impact crusher and hanging tool thereof |
| CN203428740U (en) * | 2013-08-29 | 2014-02-12 | 广西南南铝加工有限公司 | Hoisting tool |
| CN205056954U (en) * | 2015-10-10 | 2016-03-02 | 四川南车共享铸造有限公司 | 3D prints psammitolite |
| CN105598381A (en) * | 2016-02-02 | 2016-05-25 | 宁夏共享模具有限公司 | Sand core manufacturing process based on 3D printing and sand core hoisting tool based on 3D printing |
| CN207581208U (en) * | 2017-09-27 | 2018-07-06 | 宜昌南玻硅材料有限公司 | A kind of dual-purpose crystal holder boom hoisting |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113173484A (en) * | 2021-04-29 | 2021-07-27 | 共享智能铸造产业创新中心有限公司 | Sand mould hoisting structure |
| CN113135494A (en) * | 2021-05-14 | 2021-07-20 | 天津爱思达航天科技有限公司 | Non-convex hoisting mechanism |
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Application publication date: 20200505 |
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