Hollow grinding head and production method
Technical field
The present invention relates to food processing apparatus technical fields, refer in particular to a kind of hollow grinding head and production method.
Background technology
Grinding head is widely used in food preparation, as juice extractor application grinding head carries out squeezing method juice.Traditional grinding head one
As using solid mechanism, weight is big, of high cost.
Effectively to solve above-mentioned technical problem, industry has done a large amount of research and exploration, as Authorization Notice No. is
The Chinese invention patent of CN204274099U, it discloses a kind of vertical type juicing machine spiral propeller, including helical body and biography
Moving axis;The helical body is by being solidificated in transmission shaft side encapsulated body and interior encapsulated body being wrapped up outsourcing colloid group therein
Into.Above-mentioned technical proposal injection is because of whole glue thickness, and molding cycle is partially long, and manufacture production capacity is relatively low;In addition, it is stuffed entirely with inside grinding head
Heat-resisting material, material cost are higher.For another example, the Chinese invention patent of Authorization Notice No. CN204698311U, discloses one kind
For the cored screw of Normal juice machine, a liner is equipped in the housing, cavity, the middle part shape of the liner are formed in the liner
The hollow shaft housing of its one of Cheng Yiyu, the cavity is between the outer wall of the hollow shaft housing and the inner wall of liner;It is described
The cover board in interior substrate portion and hollow shaft housing is covered equipped with one between the bottom of cavity and the bottom of housing, makes cavities seals, it should
Cover board is contradicted on the inner wall of housing bottom.Above-mentioned technical proposal in the form of main shaft runs through, is molded using Multi-step injection molding, because of rotation
Pivot structure is complex, and cost of manufacture is higher, and because most of through center, internal cavity subtracts glue finite thickness.
Therefore the above-mentioned prior art still has larger room for improvement.
Invention content
It is the features such as low manufacture cost and excellent with light-weight the purpose of the present invention is to propose to a kind of hollow grinding head
Gesture.
To realize the above-mentioned technical purpose, it adopts the following technical scheme that:
A kind of hollow grinding head of the present invention, including grinding head main body and the outer grinding for being coated on grinding head body outer surface
Layer;The grinding head main body includes the cooperate upper inner core connected and lower inner core, is formed between the upper inner core and lower inner core
It seals hollow;The outer grinding layer outer surface forms several shape of threads convex ribs, and the upper inner core or outer grinding layer top are equipped with
Upper positioning region, the lower inner core or outer grinding layer lower end are equipped with lower positioning region.Sealing is formed in the grinding head main body of the present invention
It is hollow, it can greatly mitigate the weight of grinding head, save the use of material, effectively reduce production cost, while can provide enough
Strength support.
The upper interior in-core forms the cavity of lower ending opening, and the lower end that the lower inner core interference fit is arranged in cavity is opened
In mouthful, the lower inner core upper end is hollow with forming sealing within cavity inner wall.Structure is further embodied, improves product structure
Operability.
According to above technical scheme, the lower inner core includes clamping portion and the stage portion set on clamping portion bottom end;The card
Socket part is stretched into the lower ending opening of cavity, and the lower end edge of the upper inner core, which is supported, to be set in stage portion.The upper inner core and lower inner core
Good respective outer side edges can be formed, convenient for subsequent processing, while improve support strength.
According to above technical scheme, the upper positioning region, lower positioning region are on the center line of cavity.In this way,
Swinging when can effectively solve the rotation of hollow grinding head.
According to above technical scheme, cap-like structure that the clamping portion of the lower inner core and stage portion are integrally formed is described
Lower positioning region is taken shape on cap-like structure inner roof wall.In this way, can further mitigate weight, the use of material is saved, is dropped
Low production cost.
According to above technical scheme, the inner wall of the lower positioning region is equipped with non-metallic wear resistant layer.In this way, it can greatly carry
The wearability of relative superiority or inferiority positioning region improves the service life of product.
A kind of production method of hollow grinding head, includes the following steps:
1) POM, nylon or metal are selected, is molded inner core and lower inner core.
2) upper end of the lower ending opening inner wall of the cavity of upper inner core and lower inner core is polished grinding process, be convenient for
The two forms better seal interference fit.
3) upper end of lower inner core interference fit is arranged in the lower ending opening of cavity, in the top of lower inner core and cavity
Inner wall between formed sealing it is hollow, obtain grinding head main body;Convenient for mitigating weight, material is saved, reduces cost.
4) grinding head main body is put into mold and carries out quadric injection mould, outer grinding layer is formed in the outer surface of bistrique main body,
Convenient for being formed with compact effective organic whole.
According to above technical scheme, the outer grinding layer is made of Tritan TX2001, PMMA or PA.
Hollow grinding head of the present invention is ground including the grinding head main body that is made of upper inner core and lower inner core and being coated on
The outer grinding layer of bistrique body outer surface.The lower inner core upper end is hollow with forming sealing within cavity inner wall, in this way, can
Greatly to mitigate the weight of grinding head, the use of material is saved, effectively reduces production cost, while enough intensity branch can be provided
Support, efficiently solves the shortcomings of the prior art and defect.
Description of the drawings
Fig. 1 is the external structure schematic diagram of the present invention;
Fig. 2 is the schematic cross-sectional view of the present invention;
Fig. 3 is grinding head main body decomposition texture schematic diagram of the present invention;
Fig. 4 is the schematic cross-sectional view of another embodiment of the present invention;
Fig. 5 is another embodiment schematic cross-sectional view of the invention.
In figure:1st, upper inner core;11st, upper positioning region;12nd, lower end edge;13rd, cavity;2nd, lower inner core;21st, clamping portion;22nd, platform
Rank portion;23rd, lower positioning region;24th, non-metallic wear resistant layer;3rd, outer grinding layer;31st, shape of threads convex ribs;30th, grinding head main body.
Specific embodiment
Technical scheme of the present invention is illustrated with embodiment below in conjunction with the accompanying drawings.
As shown in Figures 1 to 4, a kind of hollow grinding head of the present invention is ground including grinding head main body 30 and being coated on
The outer grinding layer 3 of 30 outer surface of bistrique main body.Traditional grinding head overall structure is divided into grinding head main body 30 and outer by the present invention
Grinding layer 3 is effectively transformed convenient for the structure to grinding head main body 30, realizes that the present invention mitigates grinding head overall weight, section
The technical purpose that material saving uses.
The grinding head main body 30 include cooperating connection upper inner core 1 and lower inner core 2, the upper inner core 1 and lower interior
It is hollow that sealing is formed between core 2.Specifically, the grinding head main body 30 includes upper inner core 1 and lower inner core 2, the upper inner core 1
The cavity 13 of lower ending opening is inside formed, the lower interference fit of inner core 2 is arranged in the lower ending opening of cavity 13, described lower interior
2 upper end of core is hollow with forming sealing within 13 inner wall of cavity.The hollow size of the sealing can be according to upper inner core 1 and lower inner core
The factors such as the material selected by 2, intensity size specifically adjust, and under the premise of intensity is enough, it is hollow can to increase sealing as far as possible
Volume, with it is maximum can with mitigation grinding head weight, materials'use is saved, so as to finally realize the mesh for reducing production cost
's.
3 outer surface of outer grinding layer forms several shape of threads convex ribs 31, the upper inner core 1 or 3 top of outer grinding layer
Equipped with upper positioning region 11 (can be locating shaft or location hole, referring to Fig. 2 and Fig. 5), the lower inner core 2 or 3 lower end of outer grinding layer
Equipped with lower positioning region 23 (can be locating shaft or location hole, referring to Fig. 2 and Fig. 5).That is, when outer grinding layer 3 is uncoated
When upper 1 top of inner core, upper positioning region 11 is set on the Xiang Duan of upper inner core 1, and when outer grinding layer 3 is coated on 1 top of inner core, on
Positioning region 11 can be then directly arranged on outer grinding layer 3.Similarly, when outer grinding layer 3 it is uncoated in lower 2 lower end of inner core when, it is lower fixed
Position portion 23 is set on the lower end of lower inner core 2, and when outer grinding layer 3 is coated on lower 2 lower end of inner core, lower positioning region 23 then can directly be set
In on outer grinding layer 3.
In addition, the inner wall of the lower positioning region 23 is equipped with non-metallic wear resistant layer 24.Because lower positioning region 23 directly with driving
The main shaft connection of motor, so the setting of non-metallic wear resistant layer 24, raising wearability that can be greatly, extend product uses the longevity
Life.
The lower inner core 2 includes clamping portion 21 and the stage portion 22 set on 21 bottom end of clamping portion;The clamping portion 21 is stretched into
In the lower ending opening of cavity 13, the lower end edge 12 of the upper inner core 1, which is supported, to be set in stage portion 22.In this way, the upper inner core 1
It is formed with lower inner core 2 good fit, lower inner core 2 is avoided excessively to stretch into cavity 13 under the effect of the pressure, influence to grind greatest service
The realization of energy.
The upper positioning region 11, lower positioning region 23 are on the center line of cavity 13.In this way, it is possible to prevente effectively from
Hollow grinding head of the present invention swings when rotated.
The cap-like structure that the clamping portion 21 of the lower inner core 2 and stage portion 22 are integrally formed, the lower positioning region 23 into
Type is on cap-like structure inner roof wall.In this way, can further mitigate the weight of the present invention, material is saved, reduces cost.
More specifically, the production method of a kind of hollow grinding head of the present invention, includes the following steps:
1) POM, nylon or metal are selected, is molded inner core 1 and lower inner core 2;Certainly, in the present invention inner core 1 and under
Inner core 2 is not limited to above-mentioned making material, and other intensity are high, conducive to molding plastic material or alloy material.
2) upper end of the lower ending opening inner wall of the cavity 13 of upper inner core 1 and lower inner core 2 is polished grinding process;
Be conducive to form good interference fit between the upper end of lower inner core 2 and the lower ending opening of cavity 13, to avoid subsequent secondary
In injection moulding process, plastic cement enters through gap between the two inside cavity 13.
3) by the upper end of lower inner core 2 interference fit be arranged in the lower ending opening of cavity 13, the top of lower inner core 2 with
It is hollow that sealing is formed between the inner wall of cavity 13, obtains grinding head main body 30;
4) grinding head main body 30 is put into mold and carries out quadric injection mould, outer grinding layer 3 is formed in the outer surface of bistrique main body 30.
It should be noted that the outer grinding layer 3 is made of Tritan TX2001, PMMA or PA.Certainly, it is of the invention
Outer grinding layer 3 is not limited to above-mentioned making material, the free of contamination plastic material of other food-grades or alloy material.
The above is only the better embodiment of the present invention, therefore all constructions according to described in present patent application range,
The equivalent change or modification that feature and principle are done, is included in the range of present patent application.