CN103736942B - Upper ejector rod component of cold core box - Google Patents
Upper ejector rod component of cold core box Download PDFInfo
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- CN103736942B CN103736942B CN201310751217.1A CN201310751217A CN103736942B CN 103736942 B CN103736942 B CN 103736942B CN 201310751217 A CN201310751217 A CN 201310751217A CN 103736942 B CN103736942 B CN 103736942B
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- plunger tip
- upper plunger
- tip bar
- bar
- plate
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Abstract
The invention discloses a kind of cold-box upper push rod structure, comprise plunger tip bar and upper plunger tip plate, upper plunger tip bar lower end is provided with internal thread hole, upper plunger tip plate is provided with the hole corresponding with upper plunger tip bar lower end, upper plunger tip bar is locked on upper plunger tip plate by soket head cap screw, hole on upper plunger tip bar lower end and upper plunger tip plate is interference fits, and the outside of upper plunger tip bar lower end is provided with flat position, location.Upper plunger tip bar to be locked by an interior hexagonal drive screw and is fixed on upper plunger tip plate by the present invention, and prevents upper plunger tip bar from rotating by flat position, location, and the length of upper plunger tip bar sets according to the actual grade needs of die cavity.The connected mode of upper plunger tip bar and upper plunger tip plate is reliable, simple and reasonable, can ensure that operation acts is smooth and easy, improves product quality.
Description
Technical field
The present invention relates to machine casting field, particularly a kind of upper ejector rod component of cold core box of registration.
Background technology
In machine casting field, in core box, complete core produce and then carry out parts of Casting, need to take out from core box after core makes.At present, generally by designing the core that a kind of upper top core bar structure is used for ejecting in cold-box, particularly, upper plunger tip bar is connected with upper plunger tip plate by the screw thread of lower end.
But, the positional precision of above-mentioned connected mode is poor, the plunger tip bar sand-spraying hole corresponding to upper core box is easily caused to interfere, gap at present by increasing the upper plunger tip bar sand-spraying hole corresponding to upper core box is solved, which increase the burr of the core on plunger tip bar side, increase time and difficulty that workman clears up burr, affect production efficiency, waste resource.In addition, upper plunger tip bar may rotate, and in impact, plunger tip bar participates in shaping, reduces the quality that core is shaping.Further, the screw thread of upper plunger tip bar lower end must have escape, and escape place may cause stress to concentrate, more fragile after quenching, and slightly collision will be ruptured.Further, upper plunger tip bar needs mill out hexagonal ability thread up and then be fixed on plunger tip plate, thus needs larger cylinder just can process hexagonal, expends more material.
Summary of the invention
The present invention is to overcome defect in above-mentioned prior art, provides a kind of upper ejector rod component of cold core box, and this assembly registration, structure are simple, with low cost.
For achieving the above object, the invention provides a kind of upper ejector rod component of cold core box, comprising: upper plunger tip plate, it is arranged on penetrates on sand machine ejecting mechanism, upper plunger tip plate provides positioning supports for installing plunger tip bar, installs plunger tip bar position be provided with locating groove at upper plunger tip plate; Upper plunger tip bar, it is fixedly mounted on plunger tip plate, and the end face of upper plunger tip bar one end forms mold cavity surface together with cold-box, and to participate in core shaping, and the upper plunger tip bar other end is provided with the flat position, the location of mating with locating groove preventing it from rotating.
In technique scheme, the upper plunger tip bar other end is axially arranged with internal thread hole, aims at position be provided with dormant bolt hole at upper plunger tip plate with internal thread hole, and upper plunger tip bar is locked on upper plunger tip plate by soket head cap screw.
In technique scheme, locate flat position and locating groove is interference fits.
Compared with prior art, the present invention has following beneficial effect: by the locating groove interference fits of the flat position of upper plunger tip bar Design Orientation and upper plunger tip plate, prevent plunger tip bar from rotating, guarantee positional precision, guarantee that upper plunger tip bar participates in core smoothly shaping; By soket head cap screw, upper plunger tip rod locking is fixed on upper plunger tip plate, plunger tip bar cannot be dropped and move, strengthen upper plunger tip bar bulk strength simultaneously.
Accompanying drawing explanation
Fig. 1 is upper ejector rod component of cold core box structural representation of the present invention;
Fig. 2 is the upper plunger tip bar front view in the present invention;
Fig. 3 is the upper plunger tip bar schematic top plan view in the present invention.
Mark the following drawings mark thereon by reference to the accompanying drawings:
1-soket head cap screw, the upper plunger tip bar of 2-, 21-locates flat position, 22-internal thread hole, the upper plunger tip plate of 3-, 31-dormant bolt hole.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of detailed description of the invention.
Upper ejector rod component of cold core box of the present invention is mainly used in producing of core, in the process producing core, the end face that upper plunger tip masthead goes out end needs to form mold cavity surface together with core box inner surface, and to participate in core shaping, and then utilize above plunger tip bar that the core in core box is ejected.So " with type " design ejecting end end face of upper plunger tip bar is just extremely important, otherwise affects the Forming Quality on core surface.The present embodiment by location flat position to upper plunger tip masthead go out end end face position and improve with upper plunger tip plate be fixedly connected with mode, greatly improve positioning precision, the intensity of plunger tip bar in enhancing, structure is simple.
As shown in Figure 1, upper ejector rod component of cold core box of the present invention, be used for the core ejected in cold-box, comprise plunger tip plate 3 and upper plunger tip bar 2, upper plunger tip plate 3 is arranged on to be penetrated in sand machine ejecting mechanism (not shown), upper plunger tip plate 3 provides positioning supports for installing plunger tip bar 2, installs plunger tip bar 2 position be provided with locating groove (unmarked in figure) at upper plunger tip plate 3.Upper plunger tip bar 2 is locked on upper plunger tip plate 3 by soket head cap screw 1, particularly, upper plunger tip bar 2 body is cylindrical structural (see Fig. 3), flat position 21, the location of mating with locating groove preventing it from rotating is provided with at the stiff end of upper plunger tip bar 2, internal thread hole 22(is axially arranged with see Fig. 2) in the stiff end termination of upper plunger tip bar 2, aim at position at upper plunger tip plate 3 with internal thread hole 22 and be provided with dormant bolt hole 31, after the flat position, location of the stiff end of upper plunger tip bar 2 snaps in locating groove, soket head cap screw 1 coordinates with internal thread hole 22 through dormant bolt hole to be tightened, upper plunger tip bar 2 is locked on upper plunger tip plate 3, locating flat position 21 is interference fits with locating groove, prevent plunger tip bar from rotating.
In such scheme, the end face (not shown) ejecting end 23 of upper plunger tip bar 2 forms mold cavity surface together with cold-box, and to participate in core shaping, when special participation core curved surface forming, the end face ejecting end of upper plunger tip bar 2 is irregular state, be fixed on upper plunger tip plate 3 by the flat position of positional precision Design Orientation 21 of upper plunger tip bar 2 that specifically needs, improve positioning precision, make it to participate in core smoothly shaping, improve core Forming Quality.
Wherein, upper plunger tip bar 2 is by being made through Tempering and Quenching after turnery processing with 45# steel again.Soket head cap screw 1 adopts the M8 soket head cap screw of standard.Upper plunger tip bar 2 to insert in upper plunger tip plate 3 and by soket head cap screw 1 axial restraint, avoids in prior art and directly uses screw thread to tighten and the escape stress of machining screw that causes is concentrated and caused easily broken situation.Meanwhile, upper plunger tip bar 2 is tightened by soket head cap screw 1 and is fixed on upper plunger tip plate 3, plunger tip bar 2 cannot be dropped and move, serve the effect guaranteeing positional precision.
Be only specific embodiments of the invention above, but the present invention is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (3)
1. a upper ejector rod component of cold core box, is used for the core ejected in cold-box, it is characterized in that, comprising:
Upper plunger tip plate, it is arranged on penetrates on sand machine ejecting mechanism, and described upper plunger tip plate provides positioning supports for installing plunger tip bar, on described plunger tip plate install described on plunger tip bar position be provided with locating groove;
Upper plunger tip bar, it is fixedly mounted on described upper plunger tip plate, the end end face that ejects of described upper plunger tip bar forms mold cavity surface to participate in described core shaping together with described cold-box, and the stiff end of described upper plunger tip bar is provided with the flat position, location of mating with described locating groove preventing it from rotating.
2. upper ejector rod component of cold core box according to claim 1, it is characterized in that, the stiff end termination of described upper plunger tip bar is axially arranged with internal thread hole, plunger tip plate is aimed at position with described internal thread hole and is provided with dormant bolt hole on described, and described upper plunger tip bar to be locked on described on plunger tip plate by soket head cap screw.
3. upper ejector rod component of cold core box according to claim 1 and 2, is characterized in that, flat position, described location and described locating groove are interference fits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310751217.1A CN103736942B (en) | 2013-12-31 | 2013-12-31 | Upper ejector rod component of cold core box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310751217.1A CN103736942B (en) | 2013-12-31 | 2013-12-31 | Upper ejector rod component of cold core box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103736942A CN103736942A (en) | 2014-04-23 |
| CN103736942B true CN103736942B (en) | 2016-04-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310751217.1A Active CN103736942B (en) | 2013-12-31 | 2013-12-31 | Upper ejector rod component of cold core box |
Country Status (1)
| Country | Link |
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| CN (1) | CN103736942B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109940126A (en) * | 2019-05-05 | 2019-06-28 | 合肥江淮铸造有限责任公司 | One kind being vented plunger tip bar with form |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2203200Y (en) * | 1994-11-04 | 1995-07-12 | 上海柴油机股份有限公司 | Location loose piece automatic pin lifting mechanism |
| CN2234834Y (en) * | 1995-09-15 | 1996-09-11 | 太原科教综合服务中心 | Rotary coring type core shooter |
| DE202006001209U1 (en) * | 2006-01-26 | 2006-03-16 | Schmidt, Albina | Mold box for shaping sand cores, in a foundry, has a setting plate for the moving half-mold with beating pins through the heating pad |
| CN201589425U (en) * | 2009-12-30 | 2010-09-22 | 广东美的电器股份有限公司 | Anti-rotating structure of water inlet and outlet pipes of water tank |
| CN102554121A (en) * | 2012-02-17 | 2012-07-11 | 潍柴动力股份有限公司 | Core box for manufacturing sand core |
| CN103223461A (en) * | 2013-04-11 | 2013-07-31 | 芜湖乐锐思信息咨询有限公司 | Upward ejection core rod with characteristic of easy replacement |
| CN203621409U (en) * | 2013-12-31 | 2014-06-04 | 广西玉柴机器股份有限公司 | Upper ejector rod assembly of cold core box |
-
2013
- 2013-12-31 CN CN201310751217.1A patent/CN103736942B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2203200Y (en) * | 1994-11-04 | 1995-07-12 | 上海柴油机股份有限公司 | Location loose piece automatic pin lifting mechanism |
| CN2234834Y (en) * | 1995-09-15 | 1996-09-11 | 太原科教综合服务中心 | Rotary coring type core shooter |
| DE202006001209U1 (en) * | 2006-01-26 | 2006-03-16 | Schmidt, Albina | Mold box for shaping sand cores, in a foundry, has a setting plate for the moving half-mold with beating pins through the heating pad |
| CN201589425U (en) * | 2009-12-30 | 2010-09-22 | 广东美的电器股份有限公司 | Anti-rotating structure of water inlet and outlet pipes of water tank |
| CN102554121A (en) * | 2012-02-17 | 2012-07-11 | 潍柴动力股份有限公司 | Core box for manufacturing sand core |
| CN103223461A (en) * | 2013-04-11 | 2013-07-31 | 芜湖乐锐思信息咨询有限公司 | Upward ejection core rod with characteristic of easy replacement |
| CN203621409U (en) * | 2013-12-31 | 2014-06-04 | 广西玉柴机器股份有限公司 | Upper ejector rod assembly of cold core box |
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| Publication number | Publication date |
|---|---|
| CN103736942A (en) | 2014-04-23 |
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