CN206839063U - A kind of lower mould of bearing block precoated sand mould - Google Patents

Abstract

A kind of lower mould of bearing block precoated sand mould, belong to plant equipment production field, including lower template, lower outer die cavity, lower interior die cavity, positioning hole, sand inlet, passage, mounting hole；Described lower template is located at the periphery of lower outer die cavity；Described lower outer die cavity is located on the outside of the inside of lower template；Described lower interior die cavity is located at the interior of lower template；Described positioning hole is located in lower template；Described sand inlet is arranged in the lower template on lower outer die cavity top, while is connected with lower external form intracavitary portion and lower inner mold intracavitary portion；Described passage is arranged in lower template, and the overflow ducts between lower outer die cavity and lower interior die cavity connect；Described mounting hole is arranged in lower template, is matched with the installing plate of automatic arenaceous shell forming machine, has the production that can efficiently realize bearing block blank, save material and artificial, reduction machining amount, reduction casting flaw, improve yield rate, the characteristics of easily realizing automated production.

Description

A kind of lower mould of bearing block precoated sand mould

Technical field

The invention belongs to plant equipment production field, more particularly to a kind of lower mould of bearing block precoated sand mould.

Background technology

Bearing block is the support member of bearing, generally into case shape；As shown in figure 1, bearing block inner chamber needs to adapt to bearing The shape of outer ring, bearing block shell need to adapt to various installation environments, so its structure and shape matching are complicated, its producer is big More method production blanks using metal casting, then it is being machined, to obtain more preferable stability and processing essence Degree；Existing bearing block blank is cast using cast iron mostly, and its casting method is first according to bearing block design drawing, choosing Select suitable die joint, make profile and bearing block shape identical built-up pattern, this built-up pattern mostly using die joint as Faying face of the boundary as built-up pattern, this model is mostly wooden or aluminum is to carry and to process；Second, by model Sandbox is put into, foundry sand is inserted and tamps, sandbox is separated into taking-up model, shape is formed among the sand in sandbox With model identical cavity, then produce pouring channel and rising head just complete casting before sand mold make；3rd, sand mold is entered After the appropriate drying of row, sandbox is closed up, casting molten metal is poured into from pouring channel；4th, sandbox is removed after cooling, will Sand mold crushes, and takes out casting, takes out cast gate and rising head, just completes the making of bearing block blank；Because molten iron is poured into sand mold When, there is expansive force to sand mold in molten iron, and sand mold is relatively soft, will cause the shape of sand mold inner chamber produces to change, and this change Change is uncertain, and the appearance and size for the blank for resulting in casting out is not known；The characteristics of due to process above, its casting method Have that the operation amount of labour is big, it is high to the skilled operation skill set requirements of worker, it is desirable to which that working area is big, and operating environment is poor, powder Dirt is big, and cast(ing) surface material roughness value is high, and reserved processing capacity 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 manufacturer of bearing block is proposed for above mentioned problem, the present invention existing for the production of existing bearing block blank Method, it is characterised in that：Comprise the following steps：First, according to the design drawing of bearing block, bearing block is divided into two parts up and down, point She Jizhizao not bearing block precoated sand mould；2nd, the precoated sand mould of bearing block is put on automatic moulding machine and produces overlay film Sand pours into a mould arenaceous shell model；3rd, pour into a mould；4th, take out casting and clear up.

Bearing block precoated sand mould described in described step one refers to be used to make sand using ferrous materials are manufactured The mould of shell model；It is characterized in that：Including upper mould, lower mould；Described upper mould is used for the shape for making the top of bearing block；Institute The lower mould stated is used for the shape for making the bottom of bearing block；After described upper mould closes up with lower mould, complete bearing block is formed Overall shape.

Described upper mould, it is characterised in that：Including cope plate, upper outer die cavity, upper interior die cavity, positioning hole, sand inlet, ventilation Hole, mounting hole, gate core, rising head core；Described cope plate is located at the periphery of upper outer die cavity, is made up of ferrous materials；Described Upper outer die cavity is located on the outside of the inside of cope plate；The shape of described upper outer die cavity and the outer loop-shaped on the die joint top of arenaceous shell It is identical；The size of described upper outer die cavity is equal to appearance and size the setting plus arenaceous shell of the outer perimeter section on the die joint top of arenaceous shell Count thickness；Described upper interior die cavity is located at the interior of cope plate；The described shape of upper interior die cavity and the die joint of arenaceous shell The interior loop-shaped on top is identical；The size of described upper interior die cavity is equal to the profile chi of the inner round portion on the die joint top of arenaceous shell The very little design thickness plus arenaceous shell；The quantity of described upper interior die cavity has four, is uniformly arranged in described upper outer die cavity Side；Described positioning hole is located on cope plate, and after being aligned with the positioning hole in lower template, its interior chamber size forms arenaceous shell size and added Upper arenaceous shell thickness；Described sand inlet is arranged on the cope plate on outer die cavity top, at the same with upper external form intracavitary portion and Upper inner mold intracavitary portion connection；Described passage is arranged on cope plate, and the overflow between upper outer die cavity and upper interior die cavity is led to Road connects；Described mounting hole is arranged on cope plate, is matched with the installing plate of automatic arenaceous shell forming machine；Described gate core is set Put on cope plate, on the outside of upper external form intracavitary side, upper interior die cavity；Described rising head core is arranged on cope plate, positioned at upper On the outside of external form intracavitary side, upper interior die cavity.

Described lower mould, it is characterised in that：Including lower template, lower outer die cavity, lower interior die cavity, positioning hole, sand inlet, ventilation Hole, mounting hole；Described lower template is located at the periphery of lower outer die cavity, is made up of ferrous materials；Under described lower outer die cavity is located at On the outside of the inside of template；The shape of described lower outer die cavity is identical with the outer loop-shaped of the die joint bottom of arenaceous shell；Under described The size of outer die cavity is equal to design thickness of the appearance and size plus arenaceous shell of the outer perimeter section of the die joint bottom of arenaceous shell；Described Die cavity is located at the interior of lower template in lower；The shape of described lower interior die cavity and the interior loop-shaped of the die joint bottom of arenaceous shell It is identical；The size of described lower interior die cavity is equal to appearance and size the setting plus arenaceous shell of the inner round portion of the die joint bottom of arenaceous shell Count thickness；The quantity of described lower interior die cavity has four, is uniformly arranged in the inner side of described lower outer die cavity；Described positioning hole In lower template, after being aligned with the positioning hole on cope plate, its interior chamber size forms arenaceous shell size and adds arenaceous shell thickness； Described sand inlet is arranged in the lower template on lower outer die cavity top, while is connected with lower external form intracavitary portion and lower inner mold intracavitary portion It is logical；Described passage is arranged in lower template, and the overflow ducts between lower outer die cavity and lower interior die cavity connect；Described peace Dress hole is arranged in lower template, is matched with the installing plate of automatic arenaceous shell forming machine.

Described attribute block, it is characterised in that：Including block, mark；Described block is arranged on described lower mould；Institute The traffic sign placement stated is on the upper surface of described block.

The making of arenaceous shell in described step two refers to bearing block precoated sand mould being placed on arenaceous shell forming machine, Its internal injection precoated sand pressurized, heated sizing and solidifying, formed bearing block cast processed with certain thickness interior chamber size with Bearing block appearance and size identical cavity body.

Arenaceous shell automatic moulding machine in described step two is a kind of double precoated sand arenaceous shell automatic moulding machine, its feature It is：Including right mould frame, frame, hydraulic system, mould bases mobile device, mould bases plate, compressed air system, control system, sandbox, Sand hopper, left mould frame；Described right mould frame is arranged on mould bases mobile device right-hand member, including mould bases plate, Die and mould plate, guiding support bar； Described frame includes base, and support, described floor installation is in the bottom of double precoated sand arenaceous shell automatic moulding machine；It is described Support be arranged on base on；Described hydraulic system includes hydraulic station, control element, hydraulic cylinder；Described mould bases movement dress Put on base, including mobile work platform；Described mobile work platform can on base transverse shifting；Described mould bases Plate is arranged on the both ends of left mould frame and right mould frame, is connected respectively with guiding support bar both ends；Described compressed air system includes Source of the gas, air accumulator, cylinder；Described control system includes controller, sensor, programmer, parameter setting apparatus；Described Sandbox is arranged in frame；Described sand hopper is arranged on the top of left mould frame and right mould frame；Described left mould frame is arranged on mould bases The left end of mobile device and right mould frame are symmetrical.

Described step three refers to that cast meets bearing block material into proportioning at the cavity for the precoated sand arenaceous shell made The molten iron of the fusing of matter component requirements.

Described 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, rising head, 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 bearing block blank, save material and artificial, reduction Machining amount, casting flaw is reduced, improve yield rate, easily realize automated production.

Brief description of the drawings

Fig. 1 is the structural representation of bottom bracket of the present invention

A. bearing block inner chamber；B. bearing block shell.

Fig. 2 is the structural representation of bearing block precoated sand mould

Mould on 1.；2. lower mould；3. attribute block.

Fig. 3 is the structural representation of the upper mould of precoated sand mould

10. cope plate；Outer die cavity on 11.；Interior die cavity on 12.；13. positioning hole；14. sand inlet；15. passage；16. peace Fill hole；17. gate core；18. rising head core.

Fig. 4 is the structural representation of the lower mould of precoated sand mould

20. lower template；21. lower outer die cavity；22. die cavity in lower；23. positioning hole；24. sand inlet；25. passage；26. peace Fill hole.

Fig. 5 is the structural representation of the attribute block of precoated sand mould

31. block；32. mark.

Embodiment

In order to further illustrate technical scheme, in conjunction with embodiment of the invention is illustrated, such as Fig. 1 to Fig. 4, according to the design drawing of bearing block, in this example by taking small-size shaft bearing as an example, the quantity for choosing bearing block is four, It is uniformly arranged, the appearance and size of bearing block is amplified into 8-12 millimeters, makes bearing block precoated sand mould, bearing block is selected in this example Horizontal centre plane as cast die joint, using die joint as boundary, by bearing block precoated sand mould using bearing block die joint as Mould 1 and lower mould 2 are produced respectively in center；On upper mould 1 in this example using the steel plate of 50 millimeters of thickness as cope plate 10, Outer die cavity 11, upper interior die cavity 12, positioning hole 13, sand inlet 14, passage 15, mounting hole are produced on cope plate 10 respectively 16, gate core 17, rising head core 18, and be engaged with lower mould 2, the same steel plate from 50 millimeters of thickness makes the lower mould of lower mould 2 Plate 20, and produce lower outer die cavity 21 respectively in lower template 20, lower interior die cavity 22, positioning hole 23, sand inlet 24, passage 25, mounting hole 26, the block 31 of attribute block 3 is made from 10 millimeters of steel plate of thickness, and mark 32 is processed on block 31, will Attribute block 3 is arranged on mould 1, and upper mould 1 and the die cavity open face of lower mould 2 are closed up relatively, and it is fixed to be inserted respectively using alignment pin Position hole 18 and positioning hole 28, fix its position, form bearing block precoated sand mould；Use in this example and made simultaneously per mold The arenaceous shell of the upper and lower part of bearing block；The arenaceous shell for the bearing block made is placed on cast place, the fusing that will have been matched Molten iron is poured into arenaceous shell, after cooling, is opened arenaceous shell, is taken out casting, cast gate and rising head are removed, and clears up miscellaneous on spray Matter, just complete the production of the blank of bearing block.

It because the production of arenaceous shell and core is automated production, can produce in enormous quantities, overcome clay-bonded sand or resin sand The complexity of moulding, a large amount of Foundry quartz sands are saved, reduce production cost and labor intensity；Arenaceous shell die life simultaneously It is long, overcome wooden model or the short-life shortcoming of aluminum dipping form.

Claims (1)

1. A kind of 1. lower mould of bearing block precoated sand mould, it is characterised in that：Including lower template, lower outer die cavity, lower interior die cavity, positioning Hole, sand inlet, passage, mounting hole；Described lower template is located at the periphery of lower outer die cavity, is made up of ferrous materials；Described Lower outer die cavity is located on the outside of the inside of lower template；The shape of described lower outer die cavity and the outer loop-shaped of the die joint bottom of arenaceous shell It is identical；The size of described lower outer die cavity is equal to appearance and size the setting plus arenaceous shell of the outer perimeter section of the die joint bottom of arenaceous shell Count thickness；Described lower interior die cavity is located at the interior of lower template；The described shape of lower interior die cavity and the die joint of arenaceous shell The interior loop-shaped of bottom is identical；The size of described lower interior die cavity is equal to the profile chi of the inner round portion of the die joint bottom of arenaceous shell The very little design thickness plus arenaceous shell；The quantity of described lower interior die cavity has four, is uniformly arranged in described lower outer die cavity Side；Described positioning hole is located in lower template, after being aligned with the positioning hole on the cope plate of the upper mould of bearing block precoated sand mould, Its interior chamber size forms arenaceous shell size and adds arenaceous shell thickness；Described sand inlet is arranged on the lower template on lower outer die cavity top On, while connected with lower external form intracavitary portion and lower inner mold intracavitary portion；Described passage is arranged in lower template, with lower outer die cavity Overflow ducts connection between lower interior die cavity；Described mounting hole is arranged in lower template, the peace with automatic arenaceous shell forming machine Loading board matches.