CN203679179U - Sand die for cylinder cover of engine - Google Patents

Sand die for cylinder cover of engine Download PDF

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Publication number
CN203679179U
CN203679179U CN201320894706.8U CN201320894706U CN203679179U CN 203679179 U CN203679179 U CN 203679179U CN 201320894706 U CN201320894706 U CN 201320894706U CN 203679179 U CN203679179 U CN 203679179U
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CN
China
Prior art keywords
core
water interlayer
loose piece
under
mould
Prior art date
Application number
CN201320894706.8U
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Chinese (zh)
Inventor
丛远刚
孟宪浩
宋存
Original Assignee
宁波高盛模具制造有限公司
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Priority to CN201320894706.8U priority Critical patent/CN203679179U/en
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Publication of CN203679179U publication Critical patent/CN203679179U/en

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Abstract

The utility model belongs to the technical field of dies, in particular relates to a sand die for a cylinder cover of an engine, and aims to solve the technical problems of unreasonable design and the like in the prior art. The sand die for a cylinder cover of an engine comprises at least one water interlayer lower core model and at least one water interlayer upper core model, wherein the water interlayer upper core model is buckled above the water interlayer lower core model, and a cavity is formed between the water interlayer lower core model and the water interlayer upper core model; a plurality of movable blocks are arranged at one side of the water interlayer lower core model, are respectively positioned between the water interlayer lower core model and the water interlayer upper core model and connected with the water interlayer lower core mode in a sliding manner, and are obliquely arranged upward and outward; the inner end of each movable block is inserted into the cavity, and the outer end of each movable block extends out of the water interlayer lower core model; the water interlayer upper core model is provided with a stirring mechanism which can be used for driving the movable blocks to reciprocate in the oblique direction of the movable blocks under the action of an external force. The sand die for a cylinder cover of an engine has the advantages of compact structure and high stability.

Description

Sand mould of cylinder cover of engine mould

Technical field

The utility model belongs to technical field of mold, especially relates to a kind of sand mould of cylinder cover of engine mould.

Background technology

The important structure assembly of explosive motor, it is for closed cylinder and forms combustion chamber.L-head cylinder cylinder head, be cast with water jacket, inlet opening, apopore, spark-plug hole, bolt hole, combustion chamber etc.Overhead valve engine cylinder head, except cooling jacket, also has valve gear, air inlet and exhaust passage etc.; Cylinder cap belongs to valve actuating mechanism at internal combustion engine, be mainly for sealing cylinder upper, form combustion chamber. and also have the support of air inlet-outlet pipe as camshaft and rocker arm shaft. be mainly that air is drawn onto to cylinder internal, spark plug is lighted burning mixture, the acting of drive piston, waste gas is discharged from blast pipe.

At present, engine cylinder cap is generally processed to form by die casting, and die casting is all generally to comprise the upper die and lower die that mutually fasten up and down, between upper die and lower die, form die casting die cavity, after completing, die casting carries out die sinking by actuating unit, the mode that is generally patrix disengaging counterdie is carried out die sinking, and existing die sinking difficulty is larger, easily destroy die-cast product, in order to reduce die sinking difficulty, there is utility model people to design and in mould, set up some loose pieces, loose piece is obliquely installed, each loose piece is connected with gas/oil cylinder respectively, when die sinking, by the effect of gas/oil cylinder, loose piece is moved relative to counterdie, then patrix completes die sinking under the effect of external force, this scheme has been improved prior art to a certain extent, particularly reduce the difficulty of die sinking, but also at least there is following defect in this scheme: design unreasonable and cost is high, the setting angle of gas/oil cylinder must identical with the angle of inclination of loose piece (guaranteeing the smooth-going movement of loose piece), the manufacture difficulty of mould is very large, secondly, the control inconvenience of gas/oil cylinder, be not easy to control and complicated operation, in addition, the volume of whole mould is larger, need to occupy larger installing space area, poor practicability and do not meet the production requirement of current enterprise.

Utility model content

The purpose of this utility model is for the problems referred to above, a kind of compact conformation is provided and can reduces the sand mould of cylinder cover of engine mould of die sinking difficulty.

For achieving the above object, the utility model has adopted following technical proposal: this sand mould of cylinder cover of engine mould comprises under at least one water interlayer core on core and at least one water interlayer, on described water interlayer, core is fastened under water interlayer on core and under water interlayer and between core, forms die cavity on core and water interlayer, under water interlayer core one side be provided with some lay respectively under this water interlayer on core and water interlayer between core and all with the loose piece being connected that slides of core under water interlayer, described loose piece is tilted to outwardly and arranges, and the inner of this loose piece inserts in die cavity, outer end extends under water interlayer outside core, on described water interlayer, core is provided with the toggle mechanism that ought can drive under external force described loose piece to move back and forth back and forth at its incline direction.Under water interlayer, core is fixed on underframe.Loose piece comprises water hole loose piece and exhaust duct loose piece, and in this application, toggle mechanism can move loose piece under external force, compared with prior art, the application not only compact conformation, volume is little, and stronger (die sinking of being more convenient for) of practicality, also be convenient in addition manufacture, meet the production requirement of enterprise.

In above-mentioned sand mould of cylinder cover of engine mould, under described water interlayer, between core and loose piece, be provided with guiding slide construction, under each loose piece and water interlayer, between core, be respectively equipped with the auxiliary drive mechanism that drives loose piece can simultaneously make this loose piece outwards move when described toggle mechanism in the time that its incline direction outwards moves.

In above-mentioned sand mould of cylinder cover of engine mould, described toggle mechanism comprises the Angle Pin of stirring that is tilted to down setting outwardly, this upper end of stirring Angle Pin wears and is fixed on water interlayer on core, lower end extends under water interlayer outside core through core and end under described loose piece and water interlayer successively, under water interlayer, on core, be provided with when loose piece in the time that its incline direction moves back and forth back and forth for preventing that this from stirring the bit architecture that allows that Angle Pin contacts with core under water interlayer.Here allow bit architecture comprise to be arranged on the mounting hole on core under water interlayer, to stir Angle Pin and insert in mounting hole.

In above-mentioned sand mould of cylinder cover of engine mould, described auxiliary drive mechanism comprises that being arranged on loose piece extends to the core pressing plate of one end outward under water interlayer, be provided with the guide rod parallel with loose piece at pressing plate near one end of loose piece, on guide rod, be arranged with spring, one end of this spring is resisted against on pressing plate, and the other end is resisted against the sidepiece of core under water interlayer.

In above-mentioned sand mould of cylinder cover of engine mould, under described water interlayer, core sidepiece has the locating hole that the guide rod described in some confessions inserts one by one, the other end of spring is resisted against the locating hole bottom of core sidepiece under water interlayer, described locating hole axial line overlaps with guide rod axial line, and described guide rod part inserts in locating hole and between the end of this guide rod and the bottom of locating hole and leaves spring-compressed spacing.

In above-mentioned sand mould of cylinder cover of engine mould, between described pressing plate and loose piece, be provided with the circumferential positioning structure circumferentially rotating between this pressing plate and loose piece for preventing, under water interlayer, on core, be provided with when loose piece can prevent this loose piece in the time that its incline direction outwards moves and depart from the stopping means of core under water interlayer.

In above-mentioned sand mould of cylinder cover of engine mould, described circumferential positioning structure comprises the right angle step being arranged on loose piece, described pressing plate is arranged on right angle step, on right angle step, be provided with some screws, on pressing plate, be equipped with some screws, described screw and screw are corresponding and be threaded one by one; Described stopping means comprises the some postive stop baffles that are arranged on core sidepiece under water interlayer and lay respectively at loose piece outside, described postive stop baffle and loose piece corresponding setting one by one.

In above-mentioned sand mould of cylinder cover of engine mould, described guiding slide construction comprises the fixed guide reservation being arranged on loose piece, the both sides of fixed guide reservation be respectively equipped with water interlayer under the guide layering that is connected of core, between guide layering and fixed guide reservation, be provided with for preventing that this fixed guide reservation from axially upwards departing from the barrier structure of guide layering.

In above-mentioned sand mould of cylinder cover of engine mould, described barrier structure comprises the convex shoulder that is arranged on fixed guide reservation both sides, on guide layering, be provided with the flanging that lower surface abuts in convex shoulder upper surface, described convex shoulder and the fixed guide reservation formula that is connected as a single entity, described guide layering and the flanging formula that is connected as a single entity.

In above-mentioned sand mould of cylinder cover of engine mould, the described Angle Pin of stirring comprises the body of rod, be provided with end cap in body of rod one end, the other end is provided with and is conical guide part, described guide part stub end is connected with the body of rod, described end cap external diameter is greater than the external diameter of the body of rod and between end cap and the body of rod, forms circular orientation step, and described end cap flushes with core upper surface on water interlayer away from one end of the body of rod; Under described loose piece lower surface and water interlayer, between the lower surface of core, form 14 ° of angles.

In above-mentioned sand mould of cylinder cover of engine mould, the described installing hole that is provided with on core on water interlayer, on water interlayer, on core, be provided with the counterbore that is positioned at aperture place on installing hole, on loose piece, be provided with the intercommunicating pore coaxial with this installing hole, in fixed guide reservation, be provided with through hole, the described body of rod passes successively counterbore, installing hole, through hole and intercommunicating pore and passes from mounting hole, and end cap is located in counterbore.

Compared with prior art, the advantage of this sand mould of cylinder cover of engine mould is: 1, design is more reasonable, and loose piece moves stable and smooth-going; 2, multiple drive power, the reliability of assurance die sinking; 3, structure is more simple and compact, and the volume of whole mould is little; 4, low cost of manufacture and be easy to make, meet the production requirement of enterprise.

Accompanying drawing explanation

Fig. 1 be the utility model provide die sinking time structural representation.

Fig. 2 be the utility model provide matched moulds time structural representation.

Fig. 3 is the exhaust duct loose piece structural representation that the utility model provides.

Fig. 4 is the water hole loose piece structural representation that the utility model provides.

Fig. 5 is core mold structure schematic diagram under the water interlayer that provides of the utility model.

Fig. 6 is core partial structurtes schematic diagram on the water interlayer that provides of the utility model.

Fig. 7 is the guiding slide construction schematic diagram that the utility model provides.

Fig. 8 be the utility model provide stir Angle Pin structural representation.

In figure, core 2, loose piece 3, right angle step 31, screw 32, fixed guide reservation 33, through hole 33a, convex shoulder 34, intercommunicating pore 35, toggle mechanism 4 on core 1, locating hole 11, guide layering 12, flanging 13, installing hole 14, counterbore 15, mounting hole 16, water interlayer under underframe a, water interlayer, stir Angle Pin 41, body of rod 41a, end cap 41b, guide part 41c, circular orientation step 41d, auxiliary drive mechanism 5, pressing plate 51, screw 51a, guide rod 52, spring 53, stopping means 6, postive stop baffle 61.

The specific embodiment

Be below the specific embodiment by reference to the accompanying drawings of utility model, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.

As shown in Fig. 1-8, this sand mould of cylinder cover of engine mould comprises under at least one water interlayer core 2 on core 1 and at least one water interlayer, on described water interlayer, core 2 is fastened under water interlayer on core 1 and under water interlayer and between core 2, forms die cavity on core 1 and water interlayer, under water interlayer, core 1 is fixed on underframe a, under water interlayer core 1 one sides be provided with some lay respectively under this water interlayer on core 1 and water interlayer between core 2 and all with core under water interlayer 1 loose piece 3 being connected that slides, described loose piece 3 is tilted to outwardly and arranges, and the inner of this loose piece 3 inserts in die cavity, outer end extends under water interlayer outside core 1, concrete, under loose piece 3 lower surfaces here and water interlayer, between the lower surface of core 1, form 14 ° of angles, on described water interlayer, core 2 is provided with the toggle mechanism 4 that ought can drive under external force described loose piece 3 to move back and forth back and forth at its incline direction.

Prioritization scheme, the toggle mechanism 4 of the present embodiment comprise be tilted to down outwardly arrange stir Angle Pin 41, this upper end of stirring Angle Pin 41 wears and is fixed on water interlayer on core 2, lower end extends under water interlayer outside core 1 through core 1 and end under described loose piece 3 and water interlayer successively, this is stirred Angle Pin 41 and comprises body of rod 41a, be provided with end cap 41b in body of rod 41a one end, the other end is provided with and is conical guide part 41c, described guide part 41c stub end is connected with body of rod 41a, described end cap 41b external diameter is greater than the external diameter of body of rod 41a and between end cap 41b and body of rod 41a, forms circular orientation step 41d, described end cap 41b flushes with 2 upper surfaces of core on water interlayer away from one end of body of rod 41a.

The resistance moving in order to reduce loose piece 3, under the water interlayer of the present embodiment, between core 1 and loose piece 3, be provided with guiding slide construction, further, this guiding slide construction comprises the fixed guide reservation 33 being arranged on loose piece 3, the both sides of fixed guide reservation 33 be respectively equipped with water interlayer under the guide layering 12 that is connected of core 1, between guide layering 12 and fixed guide reservation 33, be provided with for preventing that this fixed guide reservation 33 from axially upwards departing from the barrier structure of guide layering 12; Prioritization scheme, this barrier structure comprises the convex shoulder 34 that is arranged on fixed guide reservation 33 both sides, on guide layering 12, be provided with the flanging 13 that lower surface abuts in convex shoulder 34 upper surfaces, described convex shoulder 34 and fixed guide reservation 33 formula that is connected as a single entity, described guide layering 12 and flanging 13 formula that is connected as a single entity.

More stable in order to make loose piece 3 move, under each loose piece 3 and water interlayer, between core 1, be respectively equipped with the auxiliary drive mechanism 5 that drives loose piece 3 can simultaneously make this loose piece 3 outwards move when described toggle mechanism 4 in the time that its incline direction outwards moves.Further, this auxiliary drive mechanism 5 comprises the pressing plate 51 that is arranged on loose piece 3 and extends to core 1 outer one end under water interlayer, be provided with the guide rod parallel with loose piece 3 52 at pressing plate 51 near one end of loose piece 3, on guide rod 52, be arranged with spring 53, one end of this spring 53 is resisted against on pressing plate 51, and the other end is resisted against the sidepiece of core 1 under water interlayer.In the present embodiment, in the time that core on water interlayer 2 is fastened under water interlayer on core 1, the state of spring 53 in compression, in the time that core on water interlayer 2 departs under water interlayer core 1, thereby spring 53 discharges the energy storage of compression to form a bounce and promote loose piece 3 and move.

In addition, due to loose piece 3 be tilt mobile, under water interlayer, on core 1, be provided with when loose piece 3 in the time that its incline direction moves back and forth back and forth for preventing that this from stirring the bit architecture that allows that Angle Pin 41 contacts with core under water interlayer 1.Here allow bit architecture comprise to be arranged on the mounting hole 16 on core 1 under water interlayer, to stir Angle Pin 41 and insert in mounting hole 16.On water interlayer, on core 2, be provided with installing hole 14, on water interlayer, on core 2, be provided with the counterbore 15 that is positioned at aperture place on installing hole 14, on loose piece 3, be provided with the intercommunicating pore 35 coaxial with this installing hole 14, in fixed guide reservation, be provided with through hole 33a, described body of rod 41a passes successively counterbore 15, installing hole 14, through hole 33a and intercommunicating pore 35 and passes from mounting hole 16, and end cap 41b is located in counterbore 15.

Under water interlayer, core 1 sidepiece has the locating hole 11 that the guide rod 52 described in some confessions inserts one by one, the other end of spring 53 is resisted against locating hole 11 bottoms of core 1 sidepiece under water interlayer, described locating hole 11 axial lines overlap with guide rod 52 axial lines, and described guide rod 52 parts insert in locating hole 11 and between the end of this guide rod 52 and the bottom of locating hole 11 and leave spring-compressed spacing.

Between the pressing plate 51 of the present embodiment and loose piece 3, be provided with the circumferential positioning structure circumferentially rotating between this pressing plate 51 and loose piece 3 for preventing, under water interlayer, on core 1, be provided with when loose piece 3 can prevent this loose piece 3 in the time that its incline direction outwards moves and depart from the stopping means 6 of core 1 under water interlayer.Further, the circumferential positioning structure here comprises the right angle step 31 being arranged on loose piece 3, described pressing plate 51 is arranged on right angle step 31, on right angle step 31, be provided with some screws 32, on pressing plate 51, be equipped with some screw 51a, described screw 51a and screw 32 are corresponding and be threaded one by one; Described stopping means 6 comprises the some postive stop baffles 61 that are arranged on core 1 sidepiece under water interlayer and lay respectively at loose piece 3 outsides, described postive stop baffle 61 and loose piece 3 corresponding setting one by one.

The operation principle of the present embodiment is as follows: stir Angle Pin 41 and under the effect of external force, make loose piece 3 move back and forth back and forth at its incline direction, loose piece 3 can prevent that by setting up stopping means 6 loose piece 3 from departing from core 1 under water interlayer while outwards movement, in order to guarantee stability, under water interlayer, between core 1 and loose piece 3, be provided with guiding slide construction, under the effect of this guiding slide construction, make moving back and forth back and forth of loose piece 3 more smooth-going, secondly, in order further to optimize this structure, stirring under Angle Pin 41 effect and when its incline direction outwards moves, can make outwards mobile auxiliary drive mechanism 5 of this loose piece 3 simultaneously when loose piece 3, in actual production operation, in the time that core on water interlayer 2 is fastened under water interlayer on core 1, the spring 53 of auxiliary drive mechanism 5 is in compressed energy-storage state, in the time that core on water interlayer 2 departs under water interlayer on core 1, thereby the spring 53 of auxiliary drive mechanism 5 discharges energy storage further drives loose piece 3 to move, stir after putting in place and make core 2 on water interlayer upwards depart from core 1 under water interlayer by external force when stirring Angle Pin 41, complete die sinking, the structure of the present embodiment is not only reliable and stable, and can also guarantee simple in structure and be easy to manufacture, practical and meet the production requirement of enterprise.

Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.

Although more used underframe a herein, core 1 under water interlayer, locating hole 11, guide layering 12, flanging 13, installing hole 14, counterbore 15, mounting hole 16, core 2 on water interlayer, loose piece 3, right angle step 31, screw 32, fixed guide reservation 33, through hole 33a, convex shoulder 34, intercommunicating pore 35, toggle mechanism 4, stir Angle Pin 41, body of rod 41a, end cap 41b, guide part 41c, circular orientation step 41d, auxiliary drive mechanism 5, pressing plate 51, screw 51a, guide rod 52, spring 53, stopping means 6, postive stop baffle 61 terms such as grade, but do not get rid of the possibility that uses other term.Use these terms to be only used to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.

Claims (10)

1. a sand mould of cylinder cover of engine mould, comprise core (2) on core under at least one water interlayer (1) and at least one water interlayer, it is upper and on core (1) and water interlayer, between core (2), form die cavity under water interlayer that core on described water interlayer (2) is fastened on core under water interlayer (1), it is characterized in that, under described water interlayer core (1) one side be provided with some lay respectively on core under this water interlayer (1) and water interlayer between core (2) and all with core under water interlayer (1) loose piece (3) being connected that slides, described loose piece (3) is tilted to outwardly and arranges, and the inner of this loose piece (3) inserts in die cavity, outer end extends to outside core under water interlayer (1), core on described water interlayer (2) is provided with the toggle mechanism (4) that ought can drive under external force described loose piece (3) to move back and forth back and forth at its incline direction.
2. sand mould of cylinder cover of engine mould according to claim 1, it is characterized in that, between core under described water interlayer (1) and loose piece (3), be provided with guiding slide construction, under each loose piece (3) and water interlayer, between core (1), be respectively equipped with the auxiliary drive mechanism (5) that drives loose piece (3) can simultaneously make this loose piece (3) outwards move when described toggle mechanism (4) in the time that its incline direction outwards moves.
3. sand mould of cylinder cover of engine mould according to claim 2, it is characterized in that, described toggle mechanism (4) comprise be tilted to down outwardly arrange stir Angle Pin (41), this upper end of stirring Angle Pin (41) wears and is fixed on core on water interlayer (2), lower end extends to outside core under water interlayer (1) through core (1) and end under described loose piece (3) and water interlayer successively, on core under water interlayer (1), be provided with when loose piece (3) in the time that its incline direction moves back and forth back and forth for preventing that this from stirring the bit architecture that allows that Angle Pin (41) contacts with core under water interlayer (1).
4. according to the sand mould of cylinder cover of engine mould described in claim 2 or 3, it is characterized in that, described auxiliary drive mechanism (5) comprises the pressing plate (51) that is arranged on loose piece (3) and extends to the outer one end of core under water interlayer (1), be provided with the guide rod (52) parallel with loose piece (3) at pressing plate (51) near one end of loose piece (3), on guide rod (52), be arranged with spring (53), it is upper that one end of this spring (53) is resisted against pressing plate (51), and the other end is resisted against the sidepiece of core under water interlayer (1).
5. sand mould of cylinder cover of engine mould according to claim 4, it is characterized in that, core under described water interlayer (1) sidepiece has the locating hole (11) that the guide rod (52) described in some confessions inserts one by one, the other end of spring (53) is resisted against locating hole (11) bottom of core under water interlayer (1) sidepiece, described locating hole (11) axial line overlaps with guide rod (52) axial line, and described guide rod (52) part inserts in locating hole (11) and between the end of this guide rod (52) and the bottom of locating hole (11) and leaves spring-compressed spacing.
6. sand mould of cylinder cover of engine mould according to claim 5, it is characterized in that, between described pressing plate (51) and loose piece (3), be provided with the circumferential positioning structure circumferentially rotating between this pressing plate (51) and loose piece (3) for preventing, on core under water interlayer (1), be provided with when loose piece (3) can prevent this loose piece (3) in the time that its incline direction outwards moves and depart from the stopping means (6) of core (1) under water interlayer.
7. sand mould of cylinder cover of engine mould according to claim 6, it is characterized in that, described circumferential positioning structure comprises the right angle step (31) being arranged on loose piece (3), described pressing plate (51) is arranged on right angle step (31), on right angle step (31), be provided with some screws (32), on pressing plate (51), be equipped with some screws (51a), described screw (51a) and screw (32) are corresponding and be threaded one by one; Described stopping means (6) comprises the some postive stop baffles (61) that are arranged on (1) sidepiece of core under water interlayer and lay respectively at loose piece (3) outside, described postive stop baffle (61) and loose piece (3) corresponding setting one by one.
8. according to the sand mould of cylinder cover of engine mould described in claim 2 or 3, it is characterized in that, described guiding slide construction comprises the fixed guide reservation (33) being arranged on loose piece (3), the both sides of fixed guide reservation (33) be respectively equipped with water interlayer under the guide layering (12) that is connected of core (1), between guide layering (12) and fixed guide reservation (33), be provided with the barrier structure for preventing that this fixed guide reservation (33) from axially upwards departing from guide layering (12).
9. sand mould of cylinder cover of engine mould according to claim 8, it is characterized in that, described barrier structure comprises the convex shoulder (34) that is arranged on fixed guide reservation (33) both sides, on guide layering (12), be provided with the flanging (13) that lower surface abuts in convex shoulder (34) upper surface, described convex shoulder (34) and fixed guide reservation (33) formula that is connected as a single entity, described guide layering (12) and flanging (13) formula that is connected as a single entity.
10. sand mould of cylinder cover of engine mould according to claim 3, it is characterized in that, the described Angle Pin (41) of stirring comprises the body of rod (41a), be provided with end cap (41b) in the body of rod (41a) one end, the other end is provided with and is conical guide part (41c), described guide part (41c) stub end is connected with the body of rod (41a), described end cap (41b) external diameter is greater than the external diameter of the body of rod (41a) and forms circular orientation step (41d) between end cap (41b) and the body of rod (41a), described end cap (41b) flushes with core on water interlayer (2) upper surface away from one end of the body of rod (41a), under described loose piece (3) lower surface and water interlayer, between the lower surface of core (1), form 14 ° of angles.
CN201320894706.8U 2013-12-31 2013-12-31 Sand die for cylinder cover of engine CN203679179U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320894706.8U CN203679179U (en) 2013-12-31 2013-12-31 Sand die for cylinder cover of engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320894706.8U CN203679179U (en) 2013-12-31 2013-12-31 Sand die for cylinder cover of engine

Publications (1)

Publication Number Publication Date
CN203679179U true CN203679179U (en) 2014-07-02

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Application Number Title Priority Date Filing Date
CN201320894706.8U CN203679179U (en) 2013-12-31 2013-12-31 Sand die for cylinder cover of engine

Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103658524A (en) * 2013-12-31 2014-03-26 宁波高盛模具制造有限公司 Sand mold die for cylinder cover of engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103658524A (en) * 2013-12-31 2014-03-26 宁波高盛模具制造有限公司 Sand mold die for cylinder cover of engine
CN103658524B (en) * 2013-12-31 2015-11-11 宁波高盛模具制造有限公司 Sand mold die for cylinder cover of engine

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Granted publication date: 20140702

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