CN114769520A - Ejector rod matching mechanism for sand core mold - Google Patents
Ejector rod matching mechanism for sand core mold Download PDFInfo
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- CN114769520A CN114769520A CN202210465148.7A CN202210465148A CN114769520A CN 114769520 A CN114769520 A CN 114769520A CN 202210465148 A CN202210465148 A CN 202210465148A CN 114769520 A CN114769520 A CN 114769520A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 31
- 239000004576 sand Substances 0.000 claims abstract description 25
- 238000007664 blowing Methods 0.000 claims description 21
- 239000011148 porous material Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 description 11
- 238000007493 shaping process Methods 0.000 description 10
- 238000006073 displacement reaction Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 238000005266 casting Methods 0.000 description 4
- 230000013011 mating Effects 0.000 description 4
- 238000005488 sandblasting Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 230000010485 coping Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 230000002026 carminative effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
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- 238000000926 separation method Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C17/00—Moulding machines characterised by the mechanism for separating the pattern from the mould or for turning over the flask or the pattern plate
- B22C17/02—Moulding machines with pin lifting arrangement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
- B22C15/23—Compacting by gas pressure or vacuum
- B22C15/24—Compacting by gas pressure or vacuum involving blowing devices in which the mould material is supplied in the form of loose particles
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- 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
- B22C7/067—Ejector elements
Abstract
The invention discloses an ejector rod matching mechanism for a sand core die, wherein a top annular gap between a top ejector rod and a through hole of the corresponding top ejector rod is 0.1mm +/-0.03 mm, a bottom annular gap between a bottom ejector rod and a through hole of the corresponding bottom ejector rod is 0.1mm +/-0.03 mm, and one end of the top annular gap, which is away from a bottom die holder, and one end of the bottom annular gap, which is away from the top die holder, are respectively provided with an air resistance structure. According to the invention, through the high-precision control of the annular gap and the matching of the air resistance structure, the exhaust and sand discharge air resistance can be generated, so that the burr phenomenon on the surface of the traditional sand core is eliminated, a large amount of burrs are not required to be polished, the labor cost is reduced, and the forming precision of the sand core is ensured. The gas resistance cavity machine is simple and convenient to machine and form, and the design of dynamic friction matching end is adopted, so that the ejector rod can move smoothly. The psammitolite mould counterpoints accurately, satisfies ejector pin and hole site high accuracy concentricity demand, and the annular gap control is accurate, easily realizes simultaneously that the assembly high accuracy is adjusted, and the whole fit clearance of mould obtains high accuracy control, and mould life also obtains the guarantee.
Description
Technical Field
The invention relates to an ejector rod matching mechanism for a sand core mold, and belongs to the technical field of precision sand core forming molds.
Background
The mould is various moulds and tools for obtaining required products by injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping and other methods in industrial production. In short, a mold is a tool used to make a shaped article, the tool being made up of various parts, with different molds being made up of different parts. The method realizes the processing of the shape of an article mainly through the change of the physical state of a formed material. It is a tool for making blank into product with specific shape and size under the action of external force. The method is widely applied to blanking, die forging, cold heading, extrusion, powder metallurgy part pressing, pressure casting and the forming processing of compression molding or injection molding of products such as engineering plastics, rubber, ceramics and the like.
In the casting production process, the sand core is formed, the sand core needs to be produced through a sand core mold, and the sand core is formed through sand shooting in a cavity in the sand core mold.
The sand core mould generally comprises a base, a bottom top plate, a bottom mould base, a top mould base, a sand shooting plate, a blowing plate and a top plate from bottom to top in sequence, a sand core cavity is formed between the bottom mould base and the top mould base, and after the sand core is formed, the sand core mould can be demoulded through the displacement of ejector rods of the bottom top plate and the top plate.
Under general conditions, be equipped with a plurality of ejector pins on bottom roof and the top roof respectively, the ejector pin can pass the ejector pin through-hole on die holder and the top die holder and carry out relative displacement, thereby realize the drawing of patterns roof pressure to the psammitolite, when compound die psammitolite sand blasting shaping, the terminal surface of the free end of ejector pin forms the flush plane with the inner wall of ejector pin through-hole, thereby satisfy the profile flatness demand, however, the clearance between traditional ejector pin and the ejector pin through-hole is great, generally exceed 0.5mm, can produce the sand blasting shaping structure in this annular gap this moment, there is local or complete annular arch promptly, the reaction is the burr on the psammitolite promptly, need the later stage to carry out the manual work and polish, psammitolite surface burr distributes densely, the operation of polishing is very loaded down with trivial details, the working strength is very big.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides an ejector rod matching mechanism for a sand core die aiming at the problem that the traditional ejector rod has large matching clearance and is difficult to polish burrs.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a ejector pin cooperation mechanism for psammitolite mould, psammitolite mould includes base, bottom roof, die holder, top die holder, shooting plate, the board and the top roof of blowing that set gradually by bottom to top, be equipped with a plurality of bottom ejector pins on the bottom roof, be equipped with a plurality of top ejector pins on the top roof, be equipped with on the die holder with the bottom ejector pin through-hole that bottom ejector pin one-to-one set up, be equipped with on the top die holder with the top ejector pin through-hole that top ejector pin one-to-one set up, shooting plate reaches the board of blowing is equipped with a plurality of top ejector pins respectively and dodges the hole, its characterized in that:
the top annular gap between the top ejector rod and the through hole corresponding to the top ejector rod is 0.1mm +/-0.03 mm, the bottom annular gap between the bottom ejector rod and the through hole corresponding to the bottom ejector rod is 0.1mm +/-0.03 mm,
and one end of the top annular gap departing from the bottom die base and one end of the bottom annular gap departing from the top die base are respectively provided with an air resistance structure.
Preferably, the top ejector rod through hole comprises a top through hole bottom annular protrusion, a top through hole top annular protrusion and a top through hole air resistance cavity positioned between the top through hole bottom annular protrusion and the top through hole top annular protrusion;
the bottom ejector rod through hole comprises a bottom through hole bottom annular protrusion, a bottom through hole top annular protrusion and a top through hole air blocking cavity located between the bottom through hole bottom annular protrusion and the bottom through hole top annular protrusion.
Preferably, the free end of the top ejector rod is provided with a top rod jacking end and an ejector rod dynamic friction matching end which is used for matching with the annular protrusion at the bottom of the jacking hole;
and the free end of the bottom ejector rod is provided with a bottom rod jacking end and a bottom rod dynamic friction matching end used for matching with the annular projection at the top of the bottom through hole.
Preferably, the top rod dynamic friction matching end and the bottom rod dynamic friction matching end are respectively a thread groove section.
Preferably, the top through hole top ring projection is detachably arranged on the top die base, and the bottom through hole bottom ring projection is detachably arranged on the bottom die base.
Preferably, the top ring protrusion of the top through hole and the bottom ring protrusion of the bottom through hole are respectively provided with a sink groove matched with a limit ring rib.
Preferably, the base is provided with an alignment guide mechanism for the relative matching of the bottom top plate and the bottom die base,
and a top plate guide mechanism is arranged between the top die holder and the top plate.
Preferably, the top plate guiding mechanism comprises a sand shooting plate aligning part arranged between the top die holder and the sand shooting plate, a blowing plate guiding matching part arranged between the sand shooting plate and the blowing plate, and a top plate guiding matching part arranged between the blowing plate and the top plate.
Preferably, the sand shooting plate is provided with at least three guide matching pore channels used for matching with the top ejector rod; and at least three alignment matching pore passages matched with the top ejector rod are arranged on the air blowing plate.
Preferably, the bottom top plate is provided with a plurality of bottom top rod loading grooves for carrying the bottom top rods, the top plate is provided with a plurality of top rod loading grooves for carrying the top rods,
and adjusting carrying blocks are respectively arranged in the bottom ejector rod loading groove and the top ejector rod loading groove.
The invention has the following beneficial effects:
1. through the cooperation of annular space high accuracy control and air lock structure, can produce exhaust sand discharging air lock to eliminate the burr phenomenon on traditional psammitolite surface, need not to carry out a large amount of burr coping, reduced the human cost, ensured psammitolite shaping precision simultaneously.
2. Satisfy the gas and hinder chamber shaping demand, the gas hinders succinct convenience of chamber machine tooling shaping, and has adopted the design of dynamic friction mating end for the ejector pin displacement is smooth and easy, the difficult card mould phenomenon when appearing dividing the mould, and the psammitolite drawing of patterns is also high-efficient smooth.
3. The psammitolite mould counterpoints accurately, satisfies ejector pin and hole site high accuracy concentricity demand, and the annular gap control is accurate, easily realizes simultaneously that the assembly high accuracy is adjusted, and the whole fit clearance of mould obtains high accuracy control, and mould life also obtains the guarantee.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic view of the overall construction of the sand core mold of the present invention.
Fig. 2 is a schematic side view of the core mold of the present invention.
Fig. 3 is a schematic cross-sectional view of the ejector pin engagement mechanism for a sand core mold of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present application will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The invention provides an ejector rod matching mechanism for a sand core mold, which comprises a base 1, a bottom top plate 2, a bottom mold base 3, a top mold base 4, a sand shooting plate 5, a blowing plate 6 and a top plate 7 which are sequentially arranged from bottom to top, wherein a plurality of bottom ejector rods 8 are arranged on the bottom top plate 2, a plurality of top ejector rods 9 are arranged on the top plate, bottom mold base 3 is provided with bottom ejector rod through holes 30 which are arranged in one-to-one correspondence with the bottom ejector rods, top ejector rod through holes 40 which are arranged in one-to-one correspondence with the top ejector rods are arranged on the top mold base 4, and a plurality of top ejector rod avoiding holes 10 are respectively arranged on the sand shooting plate and the blowing plate.
Specifically, the core mould realizes stripping and jacking through the bottom ejector rod 8 and the top ejector rod 9, but the annular gap between the bottom ejector rod 8 and the bottom ejector rod through hole 30 and the annular gap between the top ejector rod 9 and the top ejector rod through hole 40 are generally 0.5mm +/-0.3 mm in size precision, and the matching precision is realized by concentricity and matching size precision between the ejector rods and the through holes, so that the precision of the traditional annular gap is basically 0.2-0.8 mm, the annular gap can generate an exhaust phenomenon in the sand blasting operation process, a large amount of irregular burrs can be generated on the core, manual burr trimming and grinding operation needs to be carried out, the operation amount is very large, the operation strength is high, the accurate control is difficult, the precision of the core can be lost, and the forming precision of a rear-end casting piece is influenced.
In order to solve the problem, in this case, the top annular gap between the top ejector rod and the through hole of the corresponding top ejector rod is 0.1mm +/-0.03 mm, the bottom annular gap between the bottom ejector rod and the through hole of the corresponding bottom ejector rod is 0.1mm +/-0.03 mm, and the end of the top annular gap away from the bottom die holder and the end of the bottom annular gap away from the top die holder are respectively provided with an air resistance structure.
The specific implementation process and principle description are as follows:
through the high accuracy size control of top annular space and bottom annular space for the annular space control is very even, and simultaneously, has adopted the air-resistor structure, forms in the annular space and prevents carminative air-resistor, and this air-resistor can prevent effectively that the annular space from advancing sand, thereby satisfies psammitolite surface smoothness demand, and the difficult burr that produces in its surface need not the operation of polishing, and the psammitolite precision has ensured the shaping precision of rear end casting, has reduced artifical coping cost simultaneously.
It should be noted that, the technology that traditional mould was beaten for the machining equipment cover basically, in the present case, adopt machining center to carry out the accurate positioning of top ejector pin through-hole, bottom ejector pin through-hole and punch, corresponding air-resistor structure is kept away empty reaming is carried out to the dorsal part that rethread was punched in the location, finally carries out the ejector pin position degree debugging of pre-assembly to the precision control annulus cooperation precision.
The air resistance structure is generally designed in a mode of an air resistance chamber, belongs to the prior art related to air resistance and is mainly used for generating the functions of air resistance, air exhaust and sand discharge when the ejector rod forms a molded surface.
In one embodiment, the air-blocking structure is described in the following specific implementation structure:
the top lift pin through hole 40 includes a top through hole bottom annular protrusion 41, a top through hole top annular protrusion 42, and a top through hole air lock chamber 43 located between the top through hole bottom annular protrusion and the top through hole top annular protrusion.
The bottom lift pin through hole 30 includes a bottom through hole bottom annular protrusion 31, a bottom through hole top annular protrusion 32, and a top through hole air lock cavity 33 located between the bottom through hole bottom annular protrusion and the bottom through hole top annular protrusion.
Specifically, the annular gaps between the top ejector rod and the top through hole bottom annular protrusion 41 and between the top ejector rod and the top through hole top annular protrusion 42 are both 0.1mm +/-0.03 mm, and the annular gap between the top ejector rod and the top through hole air resistance cavity 43 is more than 2mm, so that after die assembly, a certain ground air resistance is generated in the top through hole air resistance cavity 43, and accordingly, air exhaust and sand discharge are blocked.
The matching of the bottom ejector rod is consistent with the matching structure of the top ejector rod, so that the air resistance requirement is met, and the phenomenon that burrs are generated due to abnormal air exhaust and sand discharge of the formed sand core is basically eliminated.
In one embodiment, the free end of the top mandril 9 is provided with a top mandril top pressing end 91 and a mandril dynamic friction matching end 92 used for matching with the annular protrusion at the bottom of the top through hole; the free end of the bottom ejector rod 8 is provided with a bottom rod jacking end 81 and a bottom rod dynamic friction matching end 82 used for matching with the annular protrusion at the top of the bottom through hole.
The top rod dynamic friction mating end 92 and the bottom rod dynamic friction mating end 82 are threaded groove segments, respectively.
The specific implementation process and principle description are as follows:
because designed top through-hole air resistance chamber 43 and top through-hole air resistance chamber 33, consequently the air resistance can produce certain ground air resistance influence to the displacement of top ejector pin and bottom ejector pin, can realize certain ground air resistance dynamic friction balance destruction through this thread groove section for top ejector pin and bottom ejector pin relative displacement are comparatively smooth and easy.
More thinly, the thread groove sections of the top ejector rod and the bottom ejector rod can cover the whole through hole, so that the smoothness of displacement is ensured while the air resistance is met.
In one embodiment, the top through hole top ring projection is detachably disposed on the top die base, and the bottom through hole bottom ring projection is detachably disposed on the bottom die base. The top ring projection of the top through hole and the bottom ring projection of the bottom through hole are respectively provided with a sink groove matched with a limit ring rib.
Specifically speaking clearly, through the protruding detachable type of ring and joining in marriage and connect, satisfy the cooperation shaping demand in air lock chamber, simultaneously, adopted the design of heavy groove cooperation spacing ring rib, satisfied each protruding spacing of ring and carried on displacement precision and carry on the reliability, can not produce the separation influence to the compound die simultaneously, the shaping of air lock chamber is more convenient.
In one embodiment, the base is provided with an alignment guide mechanism for aligning and matching the bottom top plate with the bottom die base, and a top plate guide mechanism is arranged between the top die base and the top plate.
Specifically, the control precision of the annular gap is required to be 0.1mm +/-0.03 mm, so that the control of the alignment concentricity of mold closing and top pressure demolding by the alignment guide mechanism and the top plate guide mechanism is adopted, the mold closing precision of the sand core mold is generally controlled to be about 0.1mm, the mold closing precision in the case needs to be controlled to be about 0.03mm, the high-precision adjustment of the guide mechanism belongs to the prior art, and the mold closing precision is met by a regular maintenance mode.
In one embodiment, the top plate guide mechanism comprises a sand shooting plate alignment part arranged between the top die holder and the sand shooting plate, a blowing plate guide matching part arranged between the sand shooting plate and the blowing plate, and a top plate guide matching part arranged between the blowing plate and the top plate. The sand shooting plate is provided with at least three guide matching pore channels which are used for matching with the top ejector rod; the blowing plate is provided with at least three alignment matching pore channels which are used for matching with the top ejector rod.
Specifically speaking, in the traditional sand core mold, the unified alignment guide among the top mold seat, the sand shooting plate and the air blowing plate is generally realized by adopting the guide of the top ejector rod, in the present case, the alignment part of the sand shooting plate, the guide matching part of the air blowing plate and the guide matching part of the top plate respectively realize the one-to-one guide matching, the unified alignment of the top ejector rod is realized to realize the integral guide, the integral guide is matched with the local corresponding guide, the alignment concentricity requirement of the top ejector rod is met, and the high-precision annular gap control is easy to realize.
In one embodiment, a plurality of bottom ejector rod loading slots for carrying bottom ejector rods are formed in the bottom top plate, a plurality of top ejector rod loading slots for carrying top ejector rods are formed in the top plate, and the adjusting carrying blocks 100 are respectively arranged in the bottom ejector rod loading slots and the top ejector rod loading slots.
In the concentricity adjustment process of top ejector pin and bottom ejector pin promptly, realize the debugging of high accuracy carry-on through this regulation carrier block 100, this regulation carrier block 100 can realize the remodelling, carries out the regulation that meets according to ejector pin position degree and deviation to realize the annular space high accuracy control demand.
Through the above description, the ejector rod matching mechanism for the sand core mold can generate exhaust and sand discharge air resistance by matching the annular gap high-precision control with the air resistance structure, so that the phenomenon of burrs on the surface of the traditional sand core is eliminated, a large amount of burrs are not required to be ground, the labor cost is reduced, and the forming precision of the sand core is ensured. Satisfy the gas and hinder chamber shaping demand, the gas hinders succinct convenience of chamber machine tooling shaping, and has adopted the design of dynamic friction mating end for the ejector pin displacement is smooth and easy, the difficult card mould phenomenon when appearing dividing the mould, and the psammitolite drawing of patterns is also high-efficient smooth. The psammitolite mould counterpoints accurately, satisfies ejector pin and hole site high accuracy concentricity demand, and the annular gap control is accurate, easily realizes simultaneously that the assembly high accuracy is adjusted, and the whole fit clearance of mould obtains high accuracy control, and mould life also obtains the guarantee.
The terms "comprises," "comprising," or any other similar term are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. A ejector pin cooperation mechanism for psammitolite mould, the psammitolite mould includes base, bottom roof, die holder, top die holder, shooting plate, the board and the top roof of blowing that set gradually by bottom to top, be equipped with a plurality of bottom ejector pins on the bottom roof, be equipped with a plurality of top ejector pins on the top roof, be equipped with on the die holder with the bottom ejector pin through-hole that bottom ejector pin one-to-one set up, be equipped with on the top die holder with the top ejector pin through-hole that top ejector pin one-to-one set up, shooting plate reaches the board of blowing is equipped with a plurality of top ejector pins respectively and dodges the hole, its characterized in that:
the top annular gap between the top ejector rod and the through hole corresponding to the top ejector rod is 0.1mm +/-0.03 mm, the bottom annular gap between the bottom ejector rod and the through hole corresponding to the bottom ejector rod is 0.1mm +/-0.03 mm,
and one end of the top annular gap departing from the bottom die base and one end of the bottom annular gap departing from the top die base are respectively provided with an air resistance structure.
2. The ejector pin engagement mechanism for a sand core mold as in claim 1, wherein:
the top ejector rod through hole comprises a top through hole bottom annular bulge, a top through hole top annular bulge and a top through hole air resistance cavity between the top through hole bottom annular bulge and the top through hole top annular bulge;
the bottom ejector rod through hole comprises a bottom through hole bottom annular protrusion, a bottom through hole top annular protrusion and a top through hole air resistance cavity between the bottom through hole bottom annular protrusion and the bottom through hole top annular protrusion.
3. The ejector pin engagement mechanism for a sand core mold as in claim 2, wherein:
the free end of the top ejector rod is provided with a top rod jacking end and an ejector rod dynamic friction matching end which is used for matching with the annular protrusion at the bottom of the jacking hole;
and the free end of the bottom ejector rod is provided with a bottom rod jacking end and a bottom rod dynamic friction matching end used for matching with the annular projection at the top of the bottom through hole.
4. The ejector pin engagement mechanism for a sand core mold as in claim 3, wherein:
the top rod dynamic friction matching end and the bottom rod dynamic friction matching end are respectively a thread groove section.
5. The ejector pin engagement mechanism for a sand core mold as in claim 2, wherein:
the top through hole top ring is detachably arranged on the top die base, and the bottom through hole bottom ring is detachably arranged on the bottom die base.
6. The ejector pin engagement mechanism for a sand core mold of claim 5, wherein:
the top of the top through hole is provided with a ring protrusion, and the bottom of the bottom through hole is provided with a ring protrusion with a sunk groove matched with a limit ring rib.
7. The ejector pin engagement mechanism for a sand core mold of claim 1, wherein:
the base is provided with an alignment guide mechanism for the relative alignment and matching of the bottom top plate and the bottom die base,
and a top plate guide mechanism is arranged between the top die holder and the top plate.
8. The ejector pin engagement mechanism for a sand core mold as in claim 7, wherein:
the top plate guide mechanism comprises a sand shooting plate aligning part arranged between the top die holder and the sand shooting plate, a blowing plate guide matching part arranged between the sand shooting plate and the blowing plate, and a top plate guide matching part arranged between the blowing plate and the top plate.
9. The ejector pin engagement mechanism for a sand core mold of claim 8, wherein:
the sand shooting plate is provided with at least three guide matching pore channels which are used for matching with the top ejector rod; and at least three alignment matching pore channels matched with the top ejector rod are arranged on the air blowing plate.
10. The ejector pin engagement mechanism for a sand core mold as claimed in any one of claims 1 to 9, wherein:
the bottom top plate is provided with a plurality of bottom top rod loading grooves for carrying the bottom top rods, the top plate is provided with a plurality of top rod loading grooves for carrying the top rods,
and the bottom ejector rod loading groove and the top ejector rod loading groove are internally provided with adjusting loading blocks respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210465148.7A CN114769520B (en) | 2022-04-29 | 2022-04-29 | Ejector rod matching mechanism for sand core die |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210465148.7A CN114769520B (en) | 2022-04-29 | 2022-04-29 | Ejector rod matching mechanism for sand core die |
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| CN114769520A true CN114769520A (en) | 2022-07-22 |
| CN114769520B CN114769520B (en) | 2023-11-07 |
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09187822A (en) * | 1996-01-11 | 1997-07-22 | Mitsubishi Materials Corp | Mold assembly with ejecting mechanism |
| CN201455192U (en) * | 2009-06-26 | 2010-05-12 | 宁波强盛机械模具有限公司 | Automatic exhaust top-core mechanism |
| DE102009031604A1 (en) * | 2009-07-07 | 2011-01-20 | Herzog & Herzog Holding Und Service Gmbh | Sand casting tool for producing sand casting product, comprises first and second molded parts, which are movable relative to each other in direction to Z-axis and have first and second mold recesses, and nozzle- and/or smooth pressing unit |
| CN204747423U (en) * | 2015-06-25 | 2015-11-11 | 华东泰克西汽车铸造有限公司 | Dysmorphism ejector pin subassembly |
| CN204817909U (en) * | 2015-07-15 | 2015-12-02 | 华东泰克西汽车铸造有限公司 | Sand core die |
| CN204817908U (en) * | 2015-07-14 | 2015-12-02 | 华东泰克西汽车铸造有限公司 | Water jacket sand core die |
| CN205362551U (en) * | 2015-11-18 | 2016-07-06 | 潍柴动力股份有限公司 | Core box exhaust structure |
| CN106984776A (en) * | 2017-03-14 | 2017-07-28 | 宁夏共享模具有限公司 | A kind of design method of cold explosion core mould and its modularization making |
| CN109047679A (en) * | 2018-09-03 | 2018-12-21 | 十堰阳迪模具有限公司 | Plunger tip is from ejection device on a kind of sand mold casting mold |
| CN209811205U (en) * | 2019-03-19 | 2019-12-20 | 合肥熠辉轻合金科技有限公司 | Liquid forging die device of vortex disk blank for automobile air conditioner compressor |
| CN110871261A (en) * | 2018-09-03 | 2020-03-10 | 十堰阳迪模具有限公司 | Air flue sand core mold process for automobile engine cylinder cover |
| CN111069536A (en) * | 2019-10-28 | 2020-04-28 | 湖北航特装备制造股份有限公司 | Cold box method molding sand core mold and molding inspection method thereof |
| CN212144412U (en) * | 2020-05-11 | 2020-12-15 | 大连远景铸造有限公司 | Sand core is with spouting supplementary exhaust apparatus of sand mould |
| CN212577444U (en) * | 2020-06-17 | 2021-02-23 | 江苏克劳波尔科技有限公司 | Sand core mold material returning device |
-
2022
- 2022-04-29 CN CN202210465148.7A patent/CN114769520B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09187822A (en) * | 1996-01-11 | 1997-07-22 | Mitsubishi Materials Corp | Mold assembly with ejecting mechanism |
| CN201455192U (en) * | 2009-06-26 | 2010-05-12 | 宁波强盛机械模具有限公司 | Automatic exhaust top-core mechanism |
| DE102009031604A1 (en) * | 2009-07-07 | 2011-01-20 | Herzog & Herzog Holding Und Service Gmbh | Sand casting tool for producing sand casting product, comprises first and second molded parts, which are movable relative to each other in direction to Z-axis and have first and second mold recesses, and nozzle- and/or smooth pressing unit |
| CN204747423U (en) * | 2015-06-25 | 2015-11-11 | 华东泰克西汽车铸造有限公司 | Dysmorphism ejector pin subassembly |
| CN204817908U (en) * | 2015-07-14 | 2015-12-02 | 华东泰克西汽车铸造有限公司 | Water jacket sand core die |
| CN204817909U (en) * | 2015-07-15 | 2015-12-02 | 华东泰克西汽车铸造有限公司 | Sand core die |
| CN205362551U (en) * | 2015-11-18 | 2016-07-06 | 潍柴动力股份有限公司 | Core box exhaust structure |
| CN106984776A (en) * | 2017-03-14 | 2017-07-28 | 宁夏共享模具有限公司 | A kind of design method of cold explosion core mould and its modularization making |
| CN109047679A (en) * | 2018-09-03 | 2018-12-21 | 十堰阳迪模具有限公司 | Plunger tip is from ejection device on a kind of sand mold casting mold |
| CN110871261A (en) * | 2018-09-03 | 2020-03-10 | 十堰阳迪模具有限公司 | Air flue sand core mold process for automobile engine cylinder cover |
| CN209811205U (en) * | 2019-03-19 | 2019-12-20 | 合肥熠辉轻合金科技有限公司 | Liquid forging die device of vortex disk blank for automobile air conditioner compressor |
| CN111069536A (en) * | 2019-10-28 | 2020-04-28 | 湖北航特装备制造股份有限公司 | Cold box method molding sand core mold and molding inspection method thereof |
| CN212144412U (en) * | 2020-05-11 | 2020-12-15 | 大连远景铸造有限公司 | Sand core is with spouting supplementary exhaust apparatus of sand mould |
| CN212577444U (en) * | 2020-06-17 | 2021-02-23 | 江苏克劳波尔科技有限公司 | Sand core mold material returning device |
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| CN114769520B (en) | 2023-11-07 |
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