CN107053497B - A kind of multistation trepan with coolant liquid anti-leakage function - Google Patents
A kind of multistation trepan with coolant liquid anti-leakage function Download PDFInfo
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- CN107053497B CN107053497B CN201710371835.1A CN201710371835A CN107053497B CN 107053497 B CN107053497 B CN 107053497B CN 201710371835 A CN201710371835 A CN 201710371835A CN 107053497 B CN107053497 B CN 107053497B
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- oil cap
- workpiece shaft
- workpiece
- spindle box
- son
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/32—Methods and apparatus specially adapted for working materials which can easily be split, e.g. mica, slate, schist
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/32—Methods and apparatus specially adapted for working materials which can easily be split, e.g. mica, slate, schist
- B28D1/325—Methods and apparatus specially adapted for working materials which can easily be split, e.g. mica, slate, schist for making holes in easily splittable working materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D7/00—Accessories specially adapted for use with machines or devices of the preceding groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D7/00—Accessories specially adapted for use with machines or devices of the preceding groups
- B28D7/04—Accessories specially adapted for use with machines or devices of the preceding groups for supporting or holding work or conveying or discharging work
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Auxiliary Devices For Machine Tools (AREA)
Abstract
The invention discloses a kind of multistation trepans with coolant liquid anti-leakage function, including for clamping workpiece to be added and driving the workpiece shaft of workpiece rotation to be added, and with the coaxial opposite cutter holder head of workpiece shaft, workpiece shaft is fitted with spindle box, and the both side plate of spindle box is respectively equipped with the bearing being mutually equipped with workpiece shaft.The leading portion of workpiece shaft is cased with labyrinth gland, and labyrinth gland includes the anti-oil cap of mother for being fixed on spindle box side wall and the anti-oil cap of son for being fixed on workpiece shaft periphery wall, is equipped with concave-convex fit structure between female anti-oil cap and the anti-oil cap of son.Slight jitter can occur at work for workpiece shaft, and long-term jitter causes workpiece shaft gap to become larger, and coolant liquid easily infiltrates into the gap of workpiece shaft.The present invention will install labyrinth gland additional between spindle box and workpiece shaft, coolant liquid is penetrated into the gap that advantage is that of avoiding workpiece shaft.And have the characteristics that topology layout is reasonable, each mechanism cooperation precision is high and runs smoothly.
Description
Technical field
The present invention relates to machining equipments, especially for the waterproof sealing in shaft gap, specifically a kind of tool
There is the multistation trepan of coolant liquid anti-leakage function.
Background technique
Multistation trepan is mainly used for the accurate set hole machined of the crisp and hard materials such as magnetic material, semiconductor material, glass.
The multistation trepan of the prior art mainly includes for clamping workpiece to be added and filling the clamping of workpiece rotation to be added in structure
It sets, several cutter tips, and the driving mechanism that driving cutter tip is moved along cutting direction, complete machine was being run in order to prevent
It heats up in journey too fast, is connected with coolant liquid water pipe in the rear end of cutter tip, coolant liquid water pipe connects water pump, when operation, passes through
Water pump conveying coolant liquid reaches cooling effect.But in use, discovery clamping device sealing effect is also less desirable,
Coolant liquid enters inside clamping device, causes influence to the service life of clamping device internal bearings.Such as Patent No.
201210159020.4 patent names are the patent of " multistation trepan ", are sealed waterproof using labyrinth type water-proof plate 5, though
It can play certain sealed waterproof effect, but but it is ineffective, major defect includes following 5:
1. it is successively to be fixedly connected with relationship that the first annulus 51, third annulus 53, the second annulus 52 are with snap ring 54, processing and
Assembly difficulty is big, and junction is easily broken off and seeps water；
2. labyrinth type water-proof plate 5 is " abutting against on step surface 11 ", " being closely fastened in boss 12 " this means that waterproof
Disk 5 still can move axially on clamping device 1, and install clamping device 1 bracket and clamping device 1 handover gap according to
So there are gaps, are easy infiltration；
" 3. snap ring 54 is closely fastened in boss 12 ", two member in tight with rotary speed difference can be because rubbing when engaging
It wipes and generates a large amount of heat and increase the rotary resistance of clamping device 1.After snap ring 54 is expanded due to heated or stress deformation
Boss 12 can be squeezed, on the one hand friction is generated with boss 12, accelerates the abrasion of snap ring 54, then sealing performance is caused to weaken；
On the other hand friction exacerbates the rotary resistance of clamping device 1 again.
4. mentioning " 5 section of labyrinth type water-proof plate is in not completely enclosed rectangle " first annulus 51 in specification from fixed point
Second annulus 52 and snap ring 54 farther out, are easy to raise the first annulus 51 according to lever principle coolant liquid, then gradually penetrate into card
54 position of ring.
5. boss 12 is a part for belonging to clamping device 1, it is that process and assemble forms together with clamping device, necessarily increases
Difficulty of processing and reduction precision.Entire clamping device is needed replacing after the abrasion of boss 12.
Summary of the invention
The technical problem to be solved by the present invention is in view of the above-mentioned state of the art, and provide topology layout rationally,
Each mechanism cooperation precision is high, runs smoothly and can effectively collect coolant liquid, prevent coolant liquid from penetrating into workpiece shaft and facilitate maintenance
A kind of multistation trepan with coolant liquid anti-leakage function of disassembly.
The technical scheme of the invention to solve the technical problem is: a kind of with the more of coolant liquid anti-leakage function
Station trepan, including being installed on spindle box for clamping workpiece to be added and driving the workpiece shaft of workpiece rotation to be added, workpiece
The leading portion of shaft is cased with labyrinth gland, and labyrinth gland includes being fixed on the anti-oil cap of mother of spindle box side wall and being fixed on
Workpiece shaft periphery wall and the anti-oil cap of son with the described anti-oil cap clearance fit of mother, are equipped between female anti-oil cap and the anti-oil cap of son
Concave-convex fit structure.
To optimize above-mentioned technical proposal, the measure taken further include:
Above-mentioned concave-convex fit structure includes being set to the anti-oil cap inward flange of son and being bonded with female anti-oil cap inner hole wall gap
Interior lining ring.
The above-mentioned anti-oil cap side of son is equipped with the first pilot trench for being nested with female anti-oil cap.
It is equipped with horizontal convex in above-mentioned the first pilot trench, is equipped between screw hole and female anti-oil cap end face and the horizontal convex cross to match
It is recessed.
The above-mentioned anti-oil cap edge of mother is extended with lining eaves, and lining eaves is set between the anti-oil cap of son and spindle box.
The above-mentioned anti-oil cap periphery of mother is equipped with female outer groove, and female outer groove is equipped with close for burying close to lining eaves, interior lining ring periphery
The sub- outer groove of seal.
The above-mentioned anti-oil cap edge of mother is equipped with the screw hole for inserting screws into spindle box, and son is grease proofing to be covered with for spiral shell
Line is connected to the thread segment in workpiece shaft；Sub- outer groove is equipped with sealing ring.
Above-mentioned thread segment rotation direction is oppositely oriented with workpiece shaft.
The workbench being obliquely installed is fixed with below above-mentioned spindle box, the bottom in table inclination face is equipped with oil return hole,
Workbench surrounding is equipped with anti-food tray；Spindle box is an integral molding structure.
The top of above-mentioned workbench is equipped with the slide plate for fixing cutter collet, and the upper end of slide plate is fitted with grease proofing coaster；
Workpiece shaft two sides are respectively equipped with the backplate for being connected to grease proofing coaster.
Compared with prior art, a kind of multistation trepan with coolant liquid anti-leakage function of the invention, including with
In clamping workpiece to be added and drive the workpiece shaft of workpiece rotation to be added, and with the coaxial opposite cutter holder head of workpiece shaft, work
Part shaft is fitted with spindle box, and the both side plate of spindle box is respectively equipped with the bearing being mutually equipped with workpiece shaft.Before workpiece shaft
Section is cased with labyrinth gland, and labyrinth gland includes being fixed on the anti-oil cap of mother of spindle box side wall and being fixed on workpiece shaft
The anti-oil cap of son of periphery wall, is equipped with concave-convex fit structure between female anti-oil cap and the anti-oil cap of son.Workpiece shaft can be sent out at work
Raw slight jitter, long-term jitter cause workpiece shaft gap to become larger, and coolant liquid easily infiltrates into the gap of workpiece shaft.The present invention
Labyrinth gland will be installed between spindle box and workpiece shaft additional, cooling is penetrated into the gap that advantage is that of avoiding workpiece shaft
Liquid.And have the characteristics that topology layout is reasonable, each mechanism cooperation precision is high and runs smoothly.
Detailed description of the invention
Fig. 1 is Working table structure schematic diagram of the invention；
Fig. 2 is the structural relation schematic diagram of the grease proofing coaster of the present invention, backplate and workbench；
Fig. 3 is the structural schematic diagram in the portion A in Fig. 1；
Fig. 4 is labyrinth gland decomposition diagram in Fig. 1；
Fig. 5 is that sealing ring is assembled in Fig. 3；
Fig. 6 is the specification of entitled " multistation trepan " Patent No. 201210159020.4 of patent in background technique
Attached drawing.
Specific embodiment
The embodiment of the present invention is described in further detail below in conjunction with attached drawing.
Fig. 1 to Fig. 5 is structural schematic diagram of the invention.
Appended drawing reference therein are as follows: 1 workpiece shaft, 11 spindle boxes, 12 locking devices, 13 bearings, 2 cutter holder heads, 3 slide plates, 5
It is anti-that power device, 6 labyrinth glands, 61 female anti-oil caps, 61a screw hole, 61b cross are recessed, 61c serves as a contrast eaves, mother's 61d outer groove, 62 sons
Oil cap, 62a thread segment, lining ring, the first pilot trench of 62c, 62d cross be convex in 62b, 62e outer groove, 63 sealing rings, 71 workbench, 72 times
Oilhole, 73 anti-food trays, 81 grease proofing coasters, 91 screw rods, 92 guiding devices.
Fig. 1 to Fig. 5 is structural schematic diagram of the invention, as shown, one kind of the invention has coolant liquid antiseep function
Can multistation trepan, including for clamping workpiece to be added and drive the workpiece shaft 1 of workpiece rotation to be added, and and workpiece
The coaxial opposite cutter holder head 2 of shaft 1, the end of workpiece shaft 1 are equipped with locking device 12, and cutter holder head 2 is fixed on slide plate 3, sliding
Plate 3 is moved left and right by the drive of power device 5.Power device 5 includes the screw rod 91 for being arranged in slide plate 3, and driving screw rod 91
The driving motor of rotation, slide plate 3 are equipped with the guiding device 92 that guiding plate 3 moves along a straight line.Workpiece shaft 1 is fitted with master
Axle box 11, the both side plate of spindle box 11 are respectively equipped with the bearing 13 being equipped with 1 phase of workpiece shaft.Workpiece shaft 1 to be added is pressed
Loaded in two pieces of support plates, it can be shaken in multistation processing, not only influence machining accuracy, can also be led because of long-term jitter
1 gap of workpiece shaft is caused to become larger, coolant liquid is easier in the gap for penetrating into workpiece shaft 1.The present invention changes two pieces of support plates into
Spindle box 11 installs workpiece shaft 1 to prevent workpiece shaft 1 from shaking, and spindle box 11 is by high strength casting monolithic molding, warp
Precision Machining improves product qualification rate to reach mutual precision between multiple stations.On the one hand it is mutual to improve multistation
On the other hand machining accuracy also avoids 1 gap of workpiece shaft and becomes larger to penetrate into coolant liquid.
In embodiment, as shown in Figure 1, the leading portion of workpiece shaft 1 is cased with labyrinth gland 6, labyrinth gland 6 includes
Be fixed on the anti-oil cap 61 of mother of 11 side wall of spindle box and be fixed on 1 periphery wall of workpiece shaft and with female anti-61 gap of oil cap
The anti-oil cap 62 of son of cooperation, is equipped with concave-convex fit structure between female anti-oil cap 61 and the anti-oil cap 62 of son.Workpiece shaft 1 will drive son
Anti- oil cap 62 rotates, and female anti-oil cap 61 is static relative to spindle box 11.Concave-convex fit structure is avoided that coolant liquid is directly entered
Workpiece shaft 1 enters bearing 13.Female anti-oil cap 61 can prevent frictional heat generation with anti-62 clearance fit of oil cap of son and increase work
The rotational resistance of part shaft 1, female anti-oil cap 61 and the anti-oil cap 62 of son are generated airtight plus female anti-oil cap 61 and son by rotation
Close gap between anti-oil cap 62 prevents the infiltration of coolant liquid.
In embodiment, as shown in Figure 3 and Figure 4, concave-convex fit structure includes being set to anti-62 inward flange of oil cap of son and preventing with mother
The interior lining ring 62b of 61 inner hole wall gap of oil cap fitting.One of effect of interior lining ring 62b is to support female anti-oil cap 61 outward
It opens, female anti-oil cap 61 is prevented to be squeezed and deformed by concave-convex fit structure.
In embodiment, as shown in Figure 3 and Figure 4, anti-62 side of oil cap of son is equipped with the first son for being nested with female anti-oil cap 61
Slot 62c.First pilot trench 62c is nested in one end of female anti-oil cap 61, is prevented coolant liquid to be directly entered workpiece shaft 1 or is entered axis
Hold 13.
In embodiment, it is equipped with horizontal convex 62d, screw hole 61a and female anti-oil cap as shown in Figure 3 and Figure 4, in the first pilot trench 62c
The recessed 61b of cross to match with horizontal convex 62d is equipped between 61 end faces.Horizontal convex 62d enhances the average thickness of the anti-oil cap 62 of son, and
The benefit that horizontal convex 62d is caught in horizontal recessed 61b has two: 1. sub anti-oil cap 62 increases horizontal convex 62d as fulcrum, so that the anti-oil cap 62 of son
Edge be not easy to be started by coolant liquid.2. increasing the contact area of female anti-oil cap 61 and the anti-oil cap 62 of son, sealing performance is more
Good, axially rotation ensure that the anti-oil cap 62 of son and the cooperation of female anti-oil cap 61 are more firm to horizontal convex 62d in horizontal recessed 61b.
In embodiment, as shown in Figure 3 and Figure 4, female anti-61 edge of oil cap is extended with lining eaves 61c, and it is grease proofing that lining eaves 61c is set to son
Between lid 62 and spindle box 11.Lining eaves 61c can prevent the anti-oil cap 62 of son from generating direct friction with spindle box 11.
In embodiment, as shown in Figure 3 and Figure 4, female anti-61 periphery of oil cap is equipped with mother outer groove 61d, female outer groove 61d close to lining eaves
61c, the periphery interior lining ring 62b are equipped with the sub- outer groove 62e for burying sealing ring 63.It can select for higher waterproof effect in son
Outer groove 62e adds sealing ring 63.Female outer groove 61d is also avoided that female anti-oil cap 61 by anti-62 side of oil cap of son as stress relief grooves
Edge opens.
In embodiment, as shown in Figure 3 and Figure 4, female anti-61 edge of oil cap is equipped with the spiral shell for inserting screws into spindle box 11
Nail hole 61a, the anti-oil cap 62 of son are equipped with the thread segment 62a for being threaded in workpiece shaft 1；Sub- outer groove 62e is equipped with sealing
Circle 63.
In embodiment, the rotation direction of thread segment 62a is oppositely oriented with workpiece shaft 1.It will drive when workpiece shaft 1 rotates
The anti-oil cap 62 of son is drawn close to female anti-oil cap 61, enhances sealing waterproof performance.
In embodiment, as depicted in figs. 1 and 2, the workbench 71 being obliquely installed, workbench 71 are fixed with below spindle box 11
The bottom of inclined surface is equipped with oil return hole 72, and 71 surrounding of workbench is equipped with anti-food tray 73；Spindle box 11 is an integral molding structure.Work
Make platform 71 and is recycled by certain angle toward top rake with the waste recovery for facilitating coolant liquid and processing to generate.
In embodiment, as depicted in figs. 1 and 2, the top of workbench 71 is equipped with the slide plate 3 for fixing cutter collet 2, slide plate
3 upper end is fitted with grease proofing coaster 81；1 two sides of workpiece shaft are respectively equipped with the backplate for being connected to grease proofing coaster 81.Grease proofing coaster
81 are installed in the upper end of slide plate 3, and worker can independently horizontally slip slide plate 3, and with work convenient for loading and unloading, grease proofing coaster 81 is close to main
Respectively there is the backplate being processed by iron plate before and after the direction of axle box 11, backplate is welded to connect in the side of the direction of advance of grease proofing coaster 81
Edge position.Grease proofing coaster 81 and backplate can effectively prevent coolant liquid splashing in equipment work.
Technology disclosed in above embodiments is applicable not only to trepan, apply also for puncher, edge polisher etc. have turn
The equipment of axle construction.
Highly preferred embodiment of the present invention has illustrated, and the various change or remodeling made by those of ordinary skill in the art are not
It can depart from the scope of the present invention.
Claims (2)
1. a kind of multistation trepan with coolant liquid anti-leakage function, including to be installed on spindle box (11) to be added for clamping
Workpiece and the workpiece shaft (1) for driving workpiece rotation to be added, the leading portion of the workpiece shaft (1) are cased with labyrinth gland
(6), the labyrinth gland (6) includes being fixed on the anti-oil cap (61) of mother of spindle box (11) side wall and being fixed on workpiece to turn
Axis (1) periphery wall and the anti-oil cap (62) of son with described anti-oil cap (61) clearance fit of mother, the anti-oil cap (62) of son set
There is the thread segment (62a) for being threaded on workpiece shaft (1)；The anti-oil cap (61) of mother and the anti-oil cap of son
(62) concave-convex fit structure is equipped between；It is characterized in that: the concave-convex fit structure includes being set to anti-oil cap (62) inner edge of son
Edge and the interior lining ring (62b) being bonded with female anti-oil cap (61) inner hole wall gap；Anti- oil cap (62) side of son, which is equipped with, to be used for
It is nested with the first pilot trench (62c) of female anti-oil cap (61)；Anti- oil cap (61) edge of mother is equipped with for inserting screws into main shaft
The screw hole (61a) of case (11), first pilot trench (62c) is interior to be equipped with horizontal convex (62d), screw hole (61a) and female anti-oil cap
(61) horizontal recessed (61b) to match with cross convex (62d) is equipped between end face；Anti- oil cap (61) edge of mother is extended with lining eaves
(61c), the lining eaves (61c) are set between the sub anti-oil cap (62) and the spindle box (11)；
Anti- oil cap (61) periphery of mother is equipped with female outer groove (61d), and female outer groove (61d) is described close to lining eaves (61c)
The interior lining ring periphery (62b) be equipped with sub- outer groove (62e) for burying sealing ring (63), the sub- outer groove (62e) is equipped with close
Seal (63)；
The workbench (71) being obliquely installed, the bottom of the workbench (71) inclined surface are fixed with below the spindle box (11)
Portion is equipped with oil return hole (72), and the workbench (71) surrounding is equipped with anti-food tray (73)；The spindle box (11) is integrated
Molding structure；
The top of the workbench (71) is equipped with the slide plate (3) for fixing cutter collet (2), the upper end of the slide plate (3)
It is fitted with grease proofing coaster (81)；Described workpiece shaft (1) two sides are respectively equipped with the backplate for being connected to grease proofing coaster (81).
2. a kind of multistation trepan with coolant liquid anti-leakage function according to claim 1, it is characterized in that: described
Thread segment (62a) rotation direction and the workpiece shaft (1) it is oppositely oriented.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710371835.1A CN107053497B (en) | 2017-05-24 | 2017-05-24 | A kind of multistation trepan with coolant liquid anti-leakage function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710371835.1A CN107053497B (en) | 2017-05-24 | 2017-05-24 | A kind of multistation trepan with coolant liquid anti-leakage function |
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| Publication Number | Publication Date |
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| CN107053497A CN107053497A (en) | 2017-08-18 |
| CN107053497B true CN107053497B (en) | 2019-11-26 |
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| CN201710371835.1A Active CN107053497B (en) | 2017-05-24 | 2017-05-24 | A kind of multistation trepan with coolant liquid anti-leakage function |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107584141A (en) * | 2017-10-30 | 2018-01-16 | 广西玉柴机器股份有限公司 | A kind of frock of the anti-infiltration of cold working equipment main spindle box |
| CN114714531A (en) * | 2022-05-06 | 2022-07-08 | 无锡阳光精机股份有限公司 | High-speed and long-life spindle box for high-end equipment |
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| US7052014B1 (en) * | 1999-02-04 | 2006-05-30 | Orlowski David C | Snap together bearing isolator |
| CN201873290U (en) * | 2010-11-16 | 2011-06-22 | 陈炼钢 | Labyrinth type sealing device of carrier roller |
| CN102700011A (en) * | 2012-05-22 | 2012-10-03 | 忻宣良 | Multi-station trepan boring machine |
| CN205703728U (en) * | 2016-04-08 | 2016-11-23 | 宁波明润机械制造有限公司 | A kind of axle sealing structure of grinding wheel spindle |
| CN206733370U (en) * | 2017-05-24 | 2017-12-12 | 宁波市江北宁科机械厂 | A kind of multistation trepan with coolant anti-leakage function |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020167131A1 (en) * | 1999-10-28 | 2002-11-14 | David C. Orlowski | Bearing isolator |
| KR101487024B1 (en) * | 2008-12-08 | 2015-01-28 | 두산인프라코어 주식회사 | Sealing device for spindle bearing of vertical type machine tool |
| CN202367870U (en) * | 2011-12-28 | 2012-08-08 | 忻宣良 | Multi-station trepan boring machine |
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2017
- 2017-05-24 CN CN201710371835.1A patent/CN107053497B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7052014B1 (en) * | 1999-02-04 | 2006-05-30 | Orlowski David C | Snap together bearing isolator |
| CN201873290U (en) * | 2010-11-16 | 2011-06-22 | 陈炼钢 | Labyrinth type sealing device of carrier roller |
| CN102700011A (en) * | 2012-05-22 | 2012-10-03 | 忻宣良 | Multi-station trepan boring machine |
| CN205703728U (en) * | 2016-04-08 | 2016-11-23 | 宁波明润机械制造有限公司 | A kind of axle sealing structure of grinding wheel spindle |
| CN206733370U (en) * | 2017-05-24 | 2017-12-12 | 宁波市江北宁科机械厂 | A kind of multistation trepan with coolant anti-leakage function |
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Effective date of registration: 20210115 Address after: Feishi village, ZhuangQiao street, Jiangbei District, Ningbo City, Zhejiang Province Patentee after: Ningbo Jiangbei Ningke Jinchuang Machinery Manufacturing Co.,Ltd. Address before: Feishi village small farm, ZhuangQiao street, Jiangbei District, Ningbo City, Zhejiang Province Patentee before: NINGBO JIANGBEI NINGKE MACHINERY FACTORY |
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