CN207288809U - A kind of upper mold of bucket tooth precoated sand mould - Google Patents

A kind of upper mold of bucket tooth precoated sand mould Download PDF

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Publication number
CN207288809U
CN207288809U CN201720726008.5U CN201720726008U CN207288809U CN 207288809 U CN207288809 U CN 207288809U CN 201720726008 U CN201720726008 U CN 201720726008U CN 207288809 U CN207288809 U CN 207288809U
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CN
China
Prior art keywords
sand
cope plate
cavity
arenaceous shell
bucket tooth
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201720726008.5U
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Chinese (zh)
Inventor
李向阳
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Yuzhou Kunlun Mold Co Ltd
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Yuzhou Kunlun Mold Co Ltd
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Priority to CN201720726008.5U priority Critical patent/CN207288809U/en
Application granted granted Critical
Publication of CN207288809U publication Critical patent/CN207288809U/en
Expired - Fee Related legal-status Critical Current
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Abstract

A kind of upper mold of bucket tooth precoated sand mould, belongs to engineering machinery production field, including cope plate, upper levorotation chamber, left sand inlet, mounting hole, upper middle cavity, middle sand inlet, upper right cavity, right sand inlet, location hole, venthole;The cope plate is located at the periphery of upper impression;The upper levorotation chamber is located at the inside left of cope plate;The left sand inlet is arranged on the cope plate on levorotation chamber top;The mounting hole is arranged on cope plate;The upper middle cavity is located in the middle part of the inside of cope plate;The shape of the upper middle cavity is identical with the shaped upper part of arenaceous shell left-half;The middle sand inlet is arranged on the cope plate on middle cavity top;The upper right cavity is located at the inner right side of cope plate;With the production that can efficiently realize bucket tooth blank, material and artificial, reduction machining amount are saved, the characteristics of reducing casting flaw, improve yield rate, easily realize automated production.

Description

A kind of upper mold of bucket tooth precoated sand mould
Technical field
The invention belongs to engineering machinery production field, more particularly to a kind of excavator or loading machine bucket tooth precoated sand mould Upper mold.
Background technology
Bucket tooth is the important easily consumption component on excavator or loading machine, is by crown and toothholder group similar to the tooth of people Into Dipper Teeth, the two by axis pin connect;Such as Fig. 1, the crown root of bucket tooth is usually provided with pin shaft hole, passes through axis pin and position In the toothholder connection on scraper bowl;In irregular shape due to bucket tooth, its producer is mostly using the method production hair of metal casting Base, is then being machined, to obtain more preferable stability and machining accuracy;Existing bucket tooth blank is mostly using casting Iron is cast, its casting method is first according to bucket tooth design drawing, selects suitable die joint, makes shape and bucket tooth shape The identical built-up pattern of shape, this built-up pattern faying face using die joint as boundary as built-up pattern mostly, this model It is mostly wooden or aluminum is to carry and to process;Second, model is put into sandbox, foundry sand is inserted and tamps, by sand Case separately takes out model, and the shape cavity identical with model is formed among the sand in sandbox, then produces casting and lead to Road and riser just complete the sand mold before casting and make;3rd, after sand mold to be carried out to appropriate drying, sandbox is closed up, will be cast Molten metal is made to pour into from pouring channel;4th, sandbox is removed after cooling, sand mold is crushed, takes out casting, cast gate is taken out and emits Mouthful, just complete the making of bucket tooth blank;When being poured into due to molten iron in sand mold, molten iron is to sand mold there are expansive force, and sand mold is opposite It is soft, the shape of sand mold inner cavity will be caused to produce change, and this change is uncertain, the blank for resulting in casting out Appearance and size is not known;The characteristics of due to process above, its casting method is there are the operation amount of labour is big, to the skilled of worker Operative skill requires high, it is desirable to which working area is big, and operating environment is poor, and dust is big, and cast(ing) surface material roughness value is high, reserves processing Amount is big, waste of raw materials, flexible type, the defects such as qualified yield rate is low.
The content of the invention
A kind of blank manufacture method of bucket tooth is proposed for the above problem, the present invention existing for the production of existing bucket tooth blank, It is characterized in that:Comprise the following steps:First, according to the design drawing of bucket tooth, bucket tooth precoated sand mould is manufactured and designed;2nd, will bucket The precoated sand mould of tooth, which is put on automatic moulding machine, produces precoated sand cast arenaceous shell model and sand core model;3rd, pour into a mould;4th, Take out casting and clear up.
Bucket tooth precoated sand mould described in the step one refers to be used to make arenaceous shell using steel material is manufactured With the mould of the model of sand core;It is characterized in that:Including upper mold, lower die, attribute block, half pours into a mould core, inner core, cylinder;Described The faying face of upper mold and the lower die is the cast die joint of bucket tooth;The upper mold is fixed with the lower die by positioning pin Relative position;The upper mold forms a set of including the bucket tooth first half and bucket tooth lower half after being involutory with the lower mold cavity The bucket tooth arenaceous shell shape in portion, and a set of complete bucket tooth sand core shape including the sand core first half and sand core lower half.
The upper mold, it is characterised in that:Including cope plate, upper levorotation chamber, left sand inlet, mounting hole, upper middle cavity, in Sand inlet, upper right cavity, right sand inlet, location hole, venthole;The cope plate is located at the periphery of upper impression, by steel material Material is made;The upper levorotation chamber is located at the inside left of cope plate;The shape of upper levorotation chamber and the die joint of sand core Upper partial shape is identical;The appearance and size that the size of the upper levorotation chamber is equal to the part on the die joint top of sand core adds sand The design thickness of core;The left sand inlet is arranged on the cope plate on levorotation chamber top, is connected with upper levorotation intracavitary portion;Institute The mounting hole stated is arranged on cope plate, is matched with the installing plate of automatic arenaceous shell forming machine;The upper middle cavity is located at upper mold In the middle part of the inside of plate;The shape of the upper middle cavity is identical with the shaped upper part of arenaceous shell left-half;The upper middle cavity Size be equal to arenaceous shell left-half top appearance and size add arenaceous shell design thickness;The middle sand inlet is arranged on In upper on the cope plate on cavity top, connected with upper medium-sized intracavitary portion;The upper right cavity is located at the inner right side of cope plate; The shape of the upper right cavity is identical with the shaped upper part of arenaceous shell right half part;The size of the upper right cavity is equal to arenaceous shell The appearance and size on the top of right half part adds the design thickness of arenaceous shell;The right sand inlet is arranged on upper right cavity top On cope plate, with being connected inside upper right cavity;The location hole is located on cope plate, is aligned with the location hole in lower template Afterwards, its interior chamber size forms arenaceous shell and sand core size adds arenaceous shell and sand core thickness;The venthole is arranged on upper mold On plate, the overflow ducts between upper middle cavity and upper right cavity connect.
The lower die, it is characterised in that:Including lower template, bottom left cavity, left sand inlet, mounting hole, lower middle cavity, in Sand inlet, bottom right cavity, right sand inlet, location hole, venthole;The lower template is made of steel material, positioned at cavity Periphery;The bottom left cavity is located at the inside left of lower template;Under the shape of bottom left cavity and the die joint of sand core Partial shape is identical;The appearance and size that the size of the bottom left cavity is equal to the part of the die joint lower part of sand core adds sand core Design thickness;The left sand inlet is arranged in the lower template of bottom left cavity lower part, with being connected inside bottom left cavity;It is described Mounting hole be arranged on cope plate, matched with the model sheetinstallat plate of automatic arenaceous shell forming machine;Under the lower middle cavity is located at In the middle part of the inside of template;The shape of the lower middle cavity is identical with the lower shape of arenaceous shell left-half;It is medium-sized under described The size of chamber is equal to design thickness of the appearance and size plus arenaceous shell of the lower part of arenaceous shell left-half;The middle sand inlet is set In the lower template of lower middle cavity lower part, medium-sized intracavitary portion connects with;The inside that the bottom right cavity is located at lower template is right Side;The shape of the bottom right cavity is identical with the lower shape of arenaceous shell right half part;The size of the bottom right cavity is equal to The appearance and size of the lower part of arenaceous shell right half part adds the design thickness of arenaceous shell;The right sand inlet is arranged under bottom right cavity In the lower template in portion, with being connected inside bottom right cavity;The location hole is located in lower template, with the location hole pair on cope plate After standard, its interior chamber size forms arenaceous shell and sand core size adds arenaceous shell and sand core thickness;The venthole is arranged on down In template, the overflow ducts between lower middle cavity and bottom right cavity connect.
The attribute block, it is characterised in that:Including block, mark;The block is arranged in the lower die;Institute The traffic sign placement stated is on the upper surface of the block.
The half cast core, it is characterised in that:Including gate end, overflow segment, fixing end;The gate end leaks for half It is bucket-shaped, it is fixedly connected with one end of overflow segment;The overflow segment is semi-cylindrical, and one end is fixedly connected with gate end, another End is fixedly connected with fixing end;The fixing end is provided with two installation screens, is fixed in the lower die.
The inner core, it is characterised in that:Including end face, core;The end face and the shaft end of the cylinder are fixed Connection;The geomery of the geomery of the core and the cavity of sand core matches.
The cylinder is installed in the lower die, its shaft end is fixedly connected with the inner core.
The making of arenaceous shell in the step two refers to precoated sand mould being placed on arenaceous shell forming machine, inside it Precoated sand pressurized, heated sizing and solidifying is injected, form bucket tooth cast processed carries certain thickness left side geomery and bucket The cavity body that tooth first half appearance and size is identical, right side geomery is identical with bucket tooth lower half appearance and size.
Sand core in the step two, which makes, to be referred to precoated sand mould being placed on sand core forming machine, is noted inside it Enter precoated sand pressurized, heated sizing and solidifying, form the core identical with bucket tooth inside dimension shape of bucket tooth cast.
Arenaceous shell or sand core automatic moulding machine in the step two are a kind of double-station precoated sand arenaceous shell automatic moulding machines, It is characterized in that:Including right mould frame, rack, hydraulic system, mould bases mobile device, mould bases plate, compressed air system, control system System, sandbox, sand hopper, left mould frame;The right mould frame is installed on mould bases mobile device right end, including mould bases plate, and Die and mould plate, is oriented to Supporting rod;The rack includes base, and stent, the floor installation is under double-station precoated sand arenaceous shell automatic moulding machine Portion;The stent is installed on base;The hydraulic system includes hydraulic station, control element, hydraulic cylinder;The mould bases Mobile device is installed on base, including mobile work platform;The mobile work platform can on base transverse shifting;It is described Mould bases plate be installed on the both ends of left mould frame and right mould frame, be connected respectively with guiding support bar both ends;The compressed air system System includes source of the gas, air accumulator, cylinder;The control system includes controller, sensor, programmer, parameter setting apparatus; The sandbox is installed in rack;The sand hopper is installed on the top of left mould frame and right mould frame;The left fixing of the forming frame It is symmetrical in the left end and right mould frame of mould bases mobile device.
The step three refers to the precoated sand arenaceous shell that will be made and sand core combination, is poured into a mould in its inner cavity and enters proportioning symbol Close the molten iron of the fusing of bucket tooth material component requirements.
The step four be by pour be poured in molten iron precoated sand arenaceous shell cooling after it is naturally defeated and dispersed, taking-up inner casts, clearly Cast gate, riser, and residual impurity are managed, is heat-treated and is machined into next process.
Beneficial effect
The beneficial effects of the present invention are can efficiently realize the production of bucket tooth blank, save material and artificial, reduction machine Tool processing capacity, reduces casting flaw, improves yield rate, easily realizes automated production.
Brief description of the drawings
Fig. 1 is the structure diagram of bucket tooth in the present invention
A. crown;B. pin shaft hole.
Fig. 2 is the structure diagram of bucket tooth precoated sand mould
1. upper mold;2. lower die;3. attribute block;4. half cast core;5. inner core;6. cylinder.
Fig. 3 is the structure diagram of upper mold
10. cope plate;Levorotation chamber on 11.;12. left sand inlet;13. mounting hole;Middle cavity on 14.;Sand inlet in 15.; 16. upper right cavity;17. right sand inlet;18. location hole;19. venthole.
Fig. 4 is the structure diagram of lower die
20. lower template;21. bottom left cavity;22. left sand inlet;23. mounting hole;24. cavity in lower;Sand inlet in 25.; 26. bottom right cavity;27. right sand inlet;28. location hole;29. venthole.
Fig. 5 is the structure diagram of attribute block
31. block;32. mark.
Fig. 6 is the structure diagram of half cast core
41. gate end;42. overflow segment;43. fixing end.
Fig. 7 is the structure diagram of inner core
51. end face;52. core.
Fig. 8 is the structure diagram of arenaceous shell and sand core
61. arenaceous shell;62. sand core.
Embodiment
In order to further illustrate technical scheme, in conjunction with the embodiment of the brief description of the drawings present invention, such as Fig. 1 to Fig. 8, according to the design drawing of bucket tooth, in this example by taking the bucket tooth of 360 excavators as an example, the appearance and size of bucket tooth is put 8-12 millimeters greatly, bucket tooth precoated sand mould is made, the horizontal centre plane of bucket tooth is selected in this example as cast die joint, to divide Type face is boundary, in order to improve work efficiency, is used in this example and makes the first half of bucket tooth and the sand of lower half at the same time per mold Shell and whole sand core;And bucket tooth precoated sand mould is produced into upper mold 1 with respectively centered on the die joint of the sand core of bucket tooth Mould 2, and attribute block 3, half pours into a mould core 4, inner core 5;The steel plate of 50 millimeters of thickness is used in this example in upper mold 1 as cope plate 10, produce levorotation chamber 11, left sand inlet 12, mounting hole 13, upper middle cavity 14, middle sand inlet respectively on cope plate 10 15, upper right cavity 16, right sand inlet 17, location hole 18, venthole 19, and be engaged with lower die 2, it is same to select 50 millimeters of thickness Steel plate make the lower template 20 of lower die 2, and produce bottom left cavity 21 respectively in lower template 20, left sand inlet 22, installation Hole 23, lower middle cavity 24, middle sand inlet 25, bottom right cavity 26, right sand inlet 27, location hole 28, venthole 29, by 1 He of upper mold 2 cavity open face of lower die is opposite to be closed up, and is inserted into location hole 18 and location hole 28 respectively using positioning pin, is fixed its position, Form bucket tooth precoated sand mould;In application, the bucket tooth precoated sand mould made is installed to the mould bases of arenaceous shell automatic moulding machine On, using double-station arenaceous shell sand core forming machine in this example, bucket tooth precoated sand mould is installed on arenaceous shell sand core forming machine On the mould bases of left side;Start the control system of arenaceous shell sand core forming machine, the Hydraulic Cylinder mold mounting plate movement of hydraulic system makes The upper mold 3 for obtaining bucket tooth precoated sand mould is approached and compressed with lower die 4;The control system of arenaceous shell sand core forming machine passes through information gathering System, instruction compression air system start and open sandbox and the passage of sand hopper so that proportioned precoated sand enters sand hopper simultaneously Dies cavity is entered by the sand export of sand hopper, precoated sand is compacted under pressure, control system instruction heating system pair Mould is heated, and then heats the precoated sand in mould, is allowed to denaturation and is cured, temperature sensor real-time detection heating-up temperature is simultaneously Control element is fed back to, to control the constant of heating-up temperature;After arenaceous shell and sand core cure, control system instruction hydraulic system Hydraulic cylinder separates mould, takes out arenaceous shell and sand core, just completes the manufacturing process of arenaceous shell and sand core.
The arenaceous shell made and sand core are placed on cast place, sand core is put into inside arenaceous shell according to the structure of bucket tooth, Proportioned fusing molten iron is poured into arenaceous shell, after cooling, arenaceous shell is opened, takes out casting, cast gate and riser are removed, and clears up Impurity on spray, just completes the production of the blank of bucket tooth.
Due to arenaceous shell and sand core production when automated production, can produce in enormous quantities, overcome clay-bonded sand or resin sand The complexity of moulding, saves a large amount of Foundry quartz sands, reduces production cost and labor intensity;Arenaceous shell and core mold use at the same time Long lifespan, overcomes wooden model or the short-life shortcoming of aluminum dipping form.

Claims (1)

  1. A kind of 1. upper mold of bucket tooth precoated sand mould, it is characterised in that:Including cope plate, upper levorotation chamber, left sand inlet, installation Hole, upper middle cavity, middle sand inlet, upper right cavity, right sand inlet, location hole, venthole;The cope plate is located at upper impression Periphery, is made of steel material;The upper levorotation chamber is located at the inside left of cope plate;The shape of the upper levorotation chamber with Partial shape is identical on the die joint of sand core;The size of the upper levorotation chamber is equal to the outer of the part on the die joint top of sand core Shape size adds the design thickness of sand core;The left sand inlet is arranged on the cope plate on levorotation chamber top, with upper levorotation Intracavitary portion connects;The mounting hole is arranged on cope plate, is matched with the installing plate of automatic arenaceous shell forming machine;It is described it is upper in Cavity is located in the middle part of the inside of cope plate;The shape of the upper middle cavity is identical with the shaped upper part of arenaceous shell left-half;Institute The size for the upper middle cavity stated is equal to the design thickness of the appearance and size plus arenaceous shell on the top of arenaceous shell left-half;In described Sand inlet is arranged on the cope plate on middle cavity top, is connected with upper medium-sized intracavitary portion;The upper right cavity is located at upper mold The inner right side of plate;The shape of the upper right cavity is identical with the shaped upper part of arenaceous shell right half part;The upper right cavity Size be equal to arenaceous shell right half part top appearance and size add arenaceous shell design thickness;The right sand inlet is arranged on On the cope plate on upper right cavity top, with being connected inside upper right cavity;The location hole is located on cope plate, with bucket tooth overlay film After location hole alignment in the lower template of the lower die of sand mo(u)ld tool, its interior chamber size forms arenaceous shell and sand core size adds arenaceous shell and sand Core thickness;The venthole is arranged on cope plate, and the overflow ducts between upper middle cavity and upper right cavity connect.
CN201720726008.5U 2017-06-21 2017-06-21 A kind of upper mold of bucket tooth precoated sand mould Expired - Fee Related CN207288809U (en)

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Application Number Priority Date Filing Date Title
CN201720726008.5U CN207288809U (en) 2017-06-21 2017-06-21 A kind of upper mold of bucket tooth precoated sand mould

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Application Number Priority Date Filing Date Title
CN201720726008.5U CN207288809U (en) 2017-06-21 2017-06-21 A kind of upper mold of bucket tooth precoated sand mould

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111408689A (en) * 2020-04-02 2020-07-14 邯郸慧桥复合材料科技有限公司 Bucket tooth shell mold casting method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111408689A (en) * 2020-04-02 2020-07-14 邯郸慧桥复合材料科技有限公司 Bucket tooth shell mold casting method

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20180501

Termination date: 20200621

CF01 Termination of patent right due to non-payment of annual fee