CN106217924A - A kind of cam follower formula material pressing device - Google Patents
A kind of cam follower formula material pressing device Download PDFInfo
- Publication number
- CN106217924A CN106217924A CN201610755702.XA CN201610755702A CN106217924A CN 106217924 A CN106217924 A CN 106217924A CN 201610755702 A CN201610755702 A CN 201610755702A CN 106217924 A CN106217924 A CN 106217924A
- Authority
- CN
- China
- Prior art keywords
- punch press
- cam follower
- belt wheel
- synchronizing jugged
- fixedly connected
- Prior art date
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/10—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by toggle mechanism
- B30B1/14—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by toggle mechanism operated by cams, eccentrics, or cranks
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Press Drives And Press Lines (AREA)
Abstract
nullThe present invention relates to punch press technical field of automation，It is specifically related to a kind of cam follower formula material pressing device，Including punch press framework、Punch press main shaft、Upper synchronizing jugged belt wheel、Belt、Drive shaft、Under synchronizing jugged belt wheel、Regulating wheel、Fixing seat and cam follower formula binder assembly,Described punch press framework upper end is connected with punch press main shaft，Described punch press main shaft one end is fixedly connected with synchronizing jugged belt wheel，Below described punch press framework, side is fixedly connected with fixing seat，It is connected with drive shaft in described fixing seat，Described drive shaft runs through punch press framework，Described drive shaft one end is fixedly connected with down synchronizing jugged belt wheel，It is connected with belt between synchronizing jugged belt wheel and upper synchronizing jugged belt wheel under described，Described synchronizing jugged belt wheel and under be provided with regulating wheel two between synchronizing jugged belt wheel，And two regulating wheels are movably connected in punch press frame wall，Described belt is through regulating wheel，And be tensioned wheel tensioning，In described punch press framework, lower section is provided with cam follower formula binder assembly.Present configuration is simple, and dependable performance is suitable for promoting the use of.
Description
Technical field
The present invention relates to punch press technical field of automation, be specifically related to a kind of cam follower formula material pressing device.
Background technology
When punch press workpiece transports in mould automatically, fix to enable to send into workpiece accurately the workpiece of each station lower mold
In hole, typically there is following two method: the first, use three-dimensional or three-dimensional above carrying device, rely on device oscilaltion
Action, sends in the workpiece fixing hole of lower mold exactly by workpiece, because running simultaneously with punch press, and general employing SERVO CONTROL skill
Art, cost is the highest, and operation, attendant are needed the highest technical ability；The second, relies under the position block of lower mold, or dependence
The homing guidance of die topography, in the way of freely dropping, sends in the workpiece fixing hole of lower mold by workpiece, owing to being non-imposed
Location, if there are the problems such as flaw in last process finished product, it is likely that the situation that location is inaccurate occurs, thus damages mould,
So needing to use the mode of mandatory location, workpiece can be accurately positioned in hole, workpiece location, to this end, it is proposed that one
Plant cam follower formula material pressing device.
Summary of the invention
The technical problem to be solved in the present invention is the defect overcoming prior art, it is provided that a kind of cam follower formula binder dress
Put, solve the problem that workpiece is forbidden in hole, workpiece location inner position.
For solving above-mentioned technical problem, the present invention provides techniques below scheme: a kind of cam follower formula material pressing device, including
Punch press framework, punch press main shaft, upper synchronizing jugged belt wheel, belt, drive shaft, under synchronizing jugged belt wheel, regulating wheel, fixing seat and convex
Wheel push-down binder assembly, described punch press framework upper end is connected with punch press main shaft, and described punch press main shaft one end is fixing to be connected
Having upper synchronizing jugged belt wheel, below described punch press framework, side is fixedly connected with fixing seat, is connected with in described fixing seat
Drive shaft, described drive shaft runs through punch press framework, and described drive shaft one end is fixedly connected with down synchronizing jugged belt wheel, described lower same
It is connected with belt, described synchronizing jugged belt wheel and lower synchronous cog belt between step profile of tooth belt wheel and upper synchronizing jugged belt wheel
Be provided with regulating wheel two between wheel, and two regulating wheels be movably connected in punch press frame wall, described belt through regulating wheel,
And be tensioned wheel tensioning, in described punch press framework, lower section is provided with cam follower formula binder assembly, described cam follower formula binder
Assembly side is provided with air cylinder support, and air cylinder support is fixedly connected on punch press framework, and the activity of described air cylinder support upper end is even
Being connected to strain cylinder, described tension cylinder one end is connected with tension axle, and described tension axle left end is connected with fork, institute
Stating fork bottom to be movably connected in fixed plate by the first movable axis, described fixed plate is fixedly connected on above air cylinder support, institute
State side below fork and be fixedly connected with cushion block, on the left of described fork bottom, be fixedly connected with connecting rod, described connecting rod left end
Being connected with binder block, be connected with lever by the second movable axis above described fixed plate, the activity of described lever top is even
Being connected to bearing, be connected with and hold out against bearing assembly at the upper side of described lever, described lever lower end is fixedly connected with location bar,
Bar one end, described location holds out against on locating shaft, and described locating shaft is fixedly connected in fixed plate, is provided with convex on the right side of described bearing
Wheel, described cam is fixedly connected in drive shaft, and described air cylinder support side is fixedly connected with lower mold, and described lower mold is provided with work
Part fixing hole.
Further, described cam follower formula binder assembly is provided with many groups, many groups described cam follower formula binder assembly peace
It is contained in lower section in punch press framework.
Further, after described tension cylinder is opened, tension axle is in the state of tension fork, and described cushion block holds out against on top
On tight bearing assembly, described bearing holds out against on cam cylindrical, described in hold out against bearing assembly one end and be provided with regulation bolt.
Further, described fixed plate is provided with two pieces, and two pieces of described fixed plates are fixedly connected on air cylinder support both sides.
Further, described workpiece fixing hole is provided with multiple, and multiple described workpiece fixing holes are evenly distributed in lower mold, and
And workpiece fixing hole is corresponding with binder block.
Further, described cam is provided with the first half cams and the second half cams, and the first half cams and second semi-convex
Wheel is fixed together by clamping screw, and clamping screw is provided with two.
The present invention compared with prior art has the beneficial effect that
1. can utilize the power of punch press main shaft, in workpiece is forced hole, press-in workpiece location, it is not necessary to increase and additionally drive source.
Power transmission between the most each parts uses the mode of rolling friction contact, and parts depreciation is little, and cam accelerates, slows down
Duan Caiyong deforms sinusoidal pattern so that binder block is stable movement during rising, declining, without impact.
3. simple in construction, action is accurate, easy to adjust, and dependable performance is with low cost, is suitable for promoting the use of.
Accompanying drawing explanation
Fig. 1 is one cam follower formula material pressing device structural representation of the present invention.
Fig. 2 is the cam follower formula binder assembly schematic diagram of the present invention a kind of cam follower formula material pressing device.
Fig. 3 is the cam structure schematic diagram of the present invention a kind of cam follower formula material pressing device.
In figure: synchronize under 1-punch press framework, 2-punch press main shaft, the upper synchronizing jugged belt wheel of 3-, 4-belt, 5-drive shaft, 6-
Profile of tooth belt wheel, 7-regulating wheel, 8-fix seat, 9-cam follower formula binder assembly, 10-air cylinder support, 11-strains cylinder, 12-draws
Mandrel, 13-fork, 14-cushion block, 15-the first movable axis, 16-connecting rod, 17-binder block, 18-fixed plate, 19-locating shaft,
20-lever, 21-the second movable axis, 22-bearing, 23-hold out against bearing assembly, 2301-regulates bolt, 24-location bar, 25-are convex
Wheel, 2501-the first half cam, 2502-clamping screw, 2503-the second half cam, 26-lower mold, 27-workpiece fixing hole.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, right
The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, and
It is not used in the restriction present invention.
As shown in Figure 1 to Figure 3, a kind of cam follower formula material pressing device of the present invention, including punch press framework 1, punch press
Main shaft 2, upper synchronizing jugged belt wheel 3, belt 4, drive shaft 5, under synchronizing jugged belt wheel 6, regulating wheel 7, fixing seat 8 and cam follower
Formula binder assembly 9, described punch press framework 1 upper end is connected with punch press main shaft 2, and described punch press main shaft 2 one end is fixedly connected with
Upper synchronizing jugged belt wheel 3, below described punch press framework 1, side is fixedly connected with fixing seat 8, is flexibly connected in described fixing seat 8
Having drive shaft 5, described drive shaft 5 to run through punch press framework 1, described drive shaft 5 one end is fixedly connected with down synchronizing jugged belt wheel 6,
Belt 4, described synchronizing jugged belt wheel 3 He it is connected with between synchronizing jugged belt wheel 6 and upper synchronizing jugged belt wheel 3 under described
Under be provided with regulating wheel 7 two between synchronizing jugged belt wheel 6, and two regulating wheels 7 are movably connected on punch press framework 1 wall, institute
Stating belt 4 through regulating wheel 7, and wheel 7 tensionings that are tensioned, in described punch press framework 1, to be provided with cam follower formula binder total in lower section
Becoming 9, described cam follower formula binder assembly 9 side is provided with air cylinder support 10, and air cylinder support 10 is fixedly connected on punch press frame
On frame 1, described air cylinder support 10 upper end is connected with tension cylinder 11, and described tension cylinder 11 one end is connected with tension
Axle 12, described tension axle 12 left end is connected with fork 13, and described fork 13 bottom is movably connected in by the first movable axis 15
In fixed plate 18, described fixed plate 18 is fixedly connected on above air cylinder support 10, and below described fork 13, side is fixedly connected with
Cushion block 14, is fixedly connected with connecting rod 16 on the left of described fork 13 bottom, described connecting rod 16 left end is connected with binder block
17, it is connected with lever 20 by the second movable axis 21 above described fixed plate 18, described lever 20 top is connected with axle
Holding 22, be connected with and hold out against bearing assembly 23 at the upper side of described lever 20, described lever 20 lower end is fixedly connected with location
Bar 24, bar 24 one end, described location holds out against on locating shaft 19, and described locating shaft 19 is fixedly connected in fixed plate 18, described axle
Holding and be provided with cam 25 on the right side of in the of 22, described cam 25 is fixedly connected in drive shaft 5, and described air cylinder support 10 side is fixedly connected with
Lower mold 26, described lower mold 26 is provided with workpiece fixing hole 27.
Described cam follower formula binder assembly 9 is provided with many groups, and the described cam follower formula binder assembly 9 of many groups is arranged on punch press
Lower section in framework 1, multiple cams push-down binder assembly 9 can simultaneously by multiple workpiece press-in workpiece fixing hole 27, described in draw
After tight cylinder 11 is opened, tension axle 12 is in the state of tension fork 13, and described cushion block 14 holds out against and holding out against on bearing assembly 23,
Described bearing 22 holds out against on cam 25 cylindrical, and during work, tension axle 12 strains fork 13, in order between eliminating in driving-chain
Gap, makes each part be in close contact, described in hold out against bearing assembly 23 one end be provided with regulation bolt 2301, regulation bolt 2301 can regulate
Holding out against bearing assembly 23 and stretch out the length of lever 20, regulation holds out against bearing assembly 23 and stretches out the length of lever 20, it is possible to change pressure
Material block about 17 two ends, the final position when raising and lowering, it is provided with two pieces in described fixed plate 18, two pieces of described fixed plates
18 are fixedly connected on air cylinder support 10 both sides, and described workpiece fixing hole 27 is provided with multiple, and multiple described workpiece fixing holes 27 are uniform
Being distributed in lower mold 26, and workpiece fixing hole 27 is corresponding with binder block 17, multiple workpiece can be pressed into by binder block 17 simultaneously
In workpiece fixing hole 27, described cam 25 is provided with the first half cams 2501 and the second half cams 2503, and the first half cams
2501 and the second half cam 2503 be fixed together by clamping screw 2502, and clamping screw 2502 is provided with two, convex
Wheel 25, when being installed in drive shaft 5, can rotate regulation initial position, after regulating position, with two in drive shaft 5
The first half cams 2501 and the second half cams 2503 are fixed in drive shaft 5 by clamping screw 2502.
The principle of the present invention and advantage: a kind of cam follower formula material pressing device, it is possible to utilize the power of punch press main shaft 2 to drive
Upper synchronizing jugged belt wheel 3 rotates, and under upper synchronizing jugged belt wheel 3 is driven by belt 4, synchronizing jugged belt wheel 6 rotates, lower synchronous gear
Shape belt wheel 6 rotates and drives drive shaft 5 to rotate, and drive shaft 5 rotational band moving cam 25 rotates, when cam 25 cylindrical is from cam 25 center
When the place of spot size minimum is pressed on bearings 22, fork 13 is pulled to the right by tension axle 12, and fork 13 drives connecting rod 16 He
Binder block 17 moves upward, and binder block 17 top is in rising peak, when cam 25 cylindrical from cam 25 central point size
When big place is pressed on bearings 22, cam 25 promotes lever 20 to swing to the left, holds out against bearing assembly 23 and holds out against cushion block 14 and pendulum
Bar 13, cushion block 14 and fork 13 turn left, and tension axle 12 extends, and fork 13 drives connecting rod 16 and binder block 17 to transport downwards
Dynamic, binder block 17 bottom is in decline minimum point, and is pressed into by workpiece in the workpiece fixing hole 27 of lower mold 26, reaches to be accurately positioned
Purpose, present configuration is simple, it is not necessary to extra increase driving source, and action is accurate, easy to adjust, dependable performance, is suitable for promoting
Use.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any amendment, equivalent and the improvement etc. made within god and principle, should be included within the scope of the present invention.
Claims (6)
1. a cam follower formula material pressing device, including punch press framework (1), punch press main shaft (2), upper synchronizing jugged belt wheel (3), skin
Band (4), drive shaft (5), under synchronizing jugged belt wheel (6), regulating wheel (7), fixing seat (8) and cam follower formula binder assembly (9),
It is characterized in that: described punch press framework (1) upper end is connected with punch press main shaft (2), described punch press main shaft (2) one end is fixing even
Being connected to synchronizing jugged belt wheel (3), side, described punch press framework (1) lower section is fixedly connected with fixing seat (8), described fixing seat
(8) being connected with drive shaft (5) in, described drive shaft (5) runs through punch press framework (1), and described drive shaft (5) one end is fixing even
Be connected to down synchronizing jugged belt wheel (6), described under be connected with between synchronizing jugged belt wheel (6) and upper synchronizing jugged belt wheel (3)
Belt (4), described synchronizing jugged belt wheel (3) and under be provided with regulating wheel (7) two, and two between synchronizing jugged belt wheel (6)
Individual regulating wheel (7) is movably connected on punch press framework (1) wall, and described belt (4) is through regulating wheel (7), and the wheel (7) that is tensioned
Tensioning, in described punch press framework (1), lower section is provided with cam follower formula binder assembly (9), described cam follower formula binder assembly (9)
Side is provided with air cylinder support (10), and air cylinder support (10) is fixedly connected on punch press framework (1), described air cylinder support (10)
Upper end is connected with tension cylinder (11), and described tension cylinder (11) one end is connected with tension axle (12), described tension
Axle (12) left end is connected with fork (13), and described fork (13) bottom is movably connected in fixed plate by the first movable axis (15)
(18) on, described fixed plate (18) is fixedly connected on air cylinder support (10) top, and side, described fork (13) lower section is fixing to be connected
Having cushion block (14), be fixedly connected with connecting rod (16) on the left of described fork (13) bottom, described connecting rod (16) left end activity is even
Being connected to binder block (17), described fixed plate (18) top is connected with lever (20), described lever by the second movable axis (21)
(20) top is connected with bearing (22), and described lever (20) upper side is connected with and holds out against bearing assembly (23), institute
Stating lever (20) lower end and be fixedly connected with location bar (24), bar (24) one end, described location holds out against on locating shaft (19), described
Locating shaft (19) is fixedly connected in fixed plate (18), and described bearing (22) right side is provided with cam (25), and described cam (25) is solid
Surely being connected in drive shaft (5), described air cylinder support (10) side is fixedly connected with lower mold (26), and described lower mold (26) is provided with
Workpiece fixing hole (27).
A kind of cam follower formula material pressing device the most according to claim 1, it is characterised in that described cam follower formula binder
Assembly (9) is provided with many groups, and described cam follower formula binder assembly (9) of many groups is arranged on lower section in punch press framework (1).
A kind of cam follower formula material pressing device the most according to claim 1, it is characterised in that described tension cylinder (11) is beaten
After opening, tension axle (12) is in the state of tension fork (13), and described cushion block (14) holds out against and holding out against on bearing assembly (23), institute
State bearing (22) and hold out against on cam (25) cylindrical, described in hold out against bearing assembly (23) one end be provided with regulation bolt (2301).
A kind of cam follower formula material pressing device the most according to claim 1, it is characterised in that described fixed plate (18) is provided with
Two pieces, two pieces of described fixed plates (18) are fixedly connected on air cylinder support (10) both sides.
A kind of cam follower formula material pressing device the most according to claim 1, it is characterised in that described workpiece fixing hole (27)
Being provided with multiple, multiple described workpiece fixing holes (27) are evenly distributed in lower mold (26), and workpiece fixing hole (27) and binder
Block (17) is corresponding.
A kind of cam follower formula material pressing device the most according to claim 1, it is characterised in that described cam (25) is provided with the
Half cam (2501) and the second half cams (2503), and the first half cams (2501) and the second half cams (2503) are by locking
Bolt (2502) is fixed together, and clamping screw (2502) is provided with two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610755702.XA CN106217924B (en) | 2016-08-29 | 2016-08-29 | A kind of cam follower formula material pressing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610755702.XA CN106217924B (en) | 2016-08-29 | 2016-08-29 | A kind of cam follower formula material pressing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106217924A true CN106217924A (en) | 2016-12-14 |
| CN106217924B CN106217924B (en) | 2018-01-09 |
Family
ID=58072740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610755702.XA Active CN106217924B (en) | 2016-08-29 | 2016-08-29 | A kind of cam follower formula material pressing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106217924B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005021900A (en) * | 2003-06-30 | 2005-01-27 | Sumitomo Heavy Industries Techno-Fort Co Ltd | Forging press |
| CN2737484Y (en) * | 2004-09-22 | 2005-11-02 | 杨东佐 | Top lifting out driving device for upsetting forming equipment |
| CN102909306A (en) * | 2012-10-26 | 2013-02-06 | 常州市立威刀具有限公司 | Mechanically automatic forged piece ejecting device |
| CN204052750U (en) * | 2014-06-30 | 2014-12-31 | 浙江正一机械有限公司 | Stop gauge before a kind of mould of cold header |
| CN104275361A (en) * | 2014-10-10 | 2015-01-14 | 江苏中兴西田数控科技有限公司 | Multi-station lower ejection device for cold extruding |
| CN204135104U (en) * | 2014-10-10 | 2015-02-04 | 江苏中兴西田数控科技有限公司 | Cold extrusion multistation bottom ejection device |
| CN205997398U (en) * | 2016-08-29 | 2017-03-08 | 江苏中兴西田数控科技有限公司 | A kind of cam follower formula material pressing device |
-
2016
- 2016-08-29 CN CN201610755702.XA patent/CN106217924B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005021900A (en) * | 2003-06-30 | 2005-01-27 | Sumitomo Heavy Industries Techno-Fort Co Ltd | Forging press |
| CN2737484Y (en) * | 2004-09-22 | 2005-11-02 | 杨东佐 | Top lifting out driving device for upsetting forming equipment |
| CN102909306A (en) * | 2012-10-26 | 2013-02-06 | 常州市立威刀具有限公司 | Mechanically automatic forged piece ejecting device |
| CN204052750U (en) * | 2014-06-30 | 2014-12-31 | 浙江正一机械有限公司 | Stop gauge before a kind of mould of cold header |
| CN104275361A (en) * | 2014-10-10 | 2015-01-14 | 江苏中兴西田数控科技有限公司 | Multi-station lower ejection device for cold extruding |
| CN204135104U (en) * | 2014-10-10 | 2015-02-04 | 江苏中兴西田数控科技有限公司 | Cold extrusion multistation bottom ejection device |
| CN205997398U (en) * | 2016-08-29 | 2017-03-08 | 江苏中兴西田数控科技有限公司 | A kind of cam follower formula material pressing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106217924B (en) | 2018-01-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2017530868A (en) | Sheet metal non-welded one-piece wheel manufacturing method | |
| CN201648469U (en) | Steel tube holding rotating device | |
| CN203581797U (en) | Finished-product conveying device for automatic flue production | |
| CN104475525A (en) | Manufacturing method of internal-extrusion and external-spinning type steel ring rim | |
| CN203356972U (en) | On-line wheel cylinder sleeve pressing device | |
| CN205997398U (en) | A kind of cam follower formula material pressing device | |
| CN106217924A (en) | A kind of cam follower formula material pressing device | |
| CN205966895U (en) | Bending device | |
| CN104482000B (en) | A kind of glass door pressing machine | |
| CN110053404A (en) | A kind of novel intelligent shaping box embossing machine | |
| CN108081164A (en) | Hard grinding wheel production line | |
| CN201483780U (en) | horizontal punching machine | |
| CN110560550B (en) | Multi-station strip punching machine | |
| CN104801618B (en) | Mounting machine for automobile window guide rail and bracket thereof | |
| WO2023092332A1 (en) | Conveying device and section material straightening machine | |
| US9445609B2 (en) | Method and device for adjusting the suspended form of sausages and suspended sausage loop conveying apparatus | |
| CN203830646U (en) | Riveting-skipping machine for chain riveting | |
| CN201253665Y (en) | Iron ring processing device | |
| CN207188523U (en) | A kind of automobile axle shaft coalignment | |
| CN208833152U (en) | A kind of spinning blank profile check device | |
| CN102700972A (en) | Thin roll unreeling machine | |
| CN206483838U (en) | A kind of special three axles automatic flattening machine of camshaft | |
| JP2011143472A (en) | Tool or method for manufacturing can body | |
| CN206578181U (en) | A kind of continuous punching device suitable for steel band | |
| CN206997472U (en) | A kind of continuous punching device of steel band |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210107 Address after: 213300 No.28, Shangshang Road, Zhongguancun Science Park, Liyang City, Changzhou City, Jiangsu Province Patentee after: Jiangsu Xingforging Intelligent Equipment Technology Co.,Ltd. Address before: 28 Shangshang Road, Zhongguancun Science and Technology Industrial Park, Changzhou City, Jiangsu Province Patentee before: JIANGSU CPTEK SERVO TECHNOLOGY Co.,Ltd. |