CN106140983B - The working method of touch tablet decompressor - Google Patents
The working method of touch tablet decompressor Download PDFInfo
- Publication number
- CN106140983B CN106140983B CN201610762995.4A CN201610762995A CN106140983B CN 106140983 B CN106140983 B CN 106140983B CN 201610762995 A CN201610762995 A CN 201610762995A CN 106140983 B CN106140983 B CN 106140983B
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- CN
- China
- Prior art keywords
- screw rod
- guide sleeve
- brake
- punching press
- guide post
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
- B21D37/12—Particular guiding equipment, e.g. pliers; Special arrangements for interconnection or cooperation of dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/18—Lubricating, e.g. lubricating tool and workpiece simultaneously
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The step of present patent application is related to metal stamping techniques field, specifically discloses a kind of working method of touch tablet decompressor, working method include：Punching press, braking and adjusting screw rod, wherein adjusting screw rod step is specifically, before punching press, unscrew nut, stir screw rod, then tightens nut and be fixed, screw rod Level Change, the corresponding stroke of the rectangular downward punching press of guide sleeve and realizes braking, that is, realizes the adjusting of stamping parts thickness.Using above-mentioned technical proposal, it according to the thickness of touch tablet can need that the stroke of decompressor is adjusted, braked in time when reaching default punching stroke, avoid causing the excessive punching press of touch tablet, to be effectively protected notebook computer touchpad, prevent from scrapping.
Description
Technical field
The present invention relates to metal stamping techniques fields.
Background technology
Punch process in mechanical processing occupies an important position in the processing industry of national economy.The application of sheet metal component
Field is extremely extensive, is deep into manufacturing various aspects, and sheet material forming is mainly realized by diel.Using presser
Skill, the saving series of advantages such as material and the energy high, efficient, high-quality, cost-effective with precision.The touch of notebook
Plate is exactly the product of Sheet Metal Forming Technology, and the requirement of the punching press of touch tablet to precision and efficiency is high.Currently, many enterprises are utilizing punching
When pressure method processes, simple handwork method is still continued to use, i.e., directly takes part die cavity is built-in with hand, and
And a large amount of stamping equipment is all responsible for multiple product or the manufacturing operation of working procedures.In this case, if punching press is set
Standby and mold does not have security protection dress easily to hinder the accidents such as hand.Stamping equipment is very big on safety in production influence, such as punching machine sheet
Body is just defective, lacks safety device, and clutch, brake are not sensitive reliable enough, electrical equipment control structure it is suddenly out of control and
Occur even to rush phenomenon and accessory tool is defective etc., is the major reason to cause the accident.
A kind of diel with braking function is disclosed in the prior art, belongs to metal stamping techniques field.The punching
Compression mould includes upper die holder, lower die holder, punch-pin, cavity plate, vertical guide post and rectangular guide sleeve, is formed with cavity plate slot on cavity plate, is set on cavity plate
There is pressing plate, a pair of inside face that the wing plate side of vertical guide post is opposite with rectangular guide sleeve is slidably matched, and stands guide post lower end and is equipped with connection
The brake of outer brake pipeline, brake includes a pair of opposing and one end is hinged on the brake-shoe on vertical guide post web,
The other end of a pair of of brake-shoe is rolled with driving cam and is connected, be formed on brake-shoe to the inclined inclined surface of the brake-shoe other end and
Friction plate on inclined surface, when rectangular guide sleeve is located at the brake of vertical guide post lower end, driving cam drives brake-shoe
Another inner surface sides fitting locking for rotating and keeping friction plate opposite with rectangular guide sleeve.The diel has under dangerous situation
Minitype stamping machines are carried out with the advantage of emergency braking and then protection staff safety.
But for the notebook computer touchpad of different-thickness, upper spacing between film seat and lower die holder is different when punching press,
That is the down stroke of upper die holder is different, so needing the thickness needs according to touch tablet, decompressor is adjusted, to adapt to
The punching press of different-thickness touch tablet, and needing position to brake decompressor in time in time, avoid touch tablet by excessive punching press, shadow
Ring dimensional accuracy.
Invention content
The purpose of the present invention is to provide a kind of working methods of touch tablet decompressor, can be according to the thickness of touch tablet
It needs that the stroke of decompressor is adjusted, is braked in time when reaching default punching stroke, avoid that touch tablet is caused excessively to rush
Pressure.
In order to achieve the above object, base case of the invention provides a kind of working method of touch tablet decompressor, should
Touch tablet decompressor includes the upper die holder and lower die holder being oppositely arranged, and the upper die holder is connected with the driving dress for driving
It sets, the upper die holder is equipped with punch-pin, and the lower die holder is equipped with cavity plate, the cavity plate coordinated with punch-pin is formed on the cavity plate
Slot, the cavity plate are equipped with the pressing plate for punch forming part flanging；Vertical guide post, the upper die holder are fixed on the lower die holder
It is equipped with the rectangular guide sleeve being socketed with vertical guide post, the vertical guide post lower end is equipped with the brake of connection outer brake pipeline, described
Vertical guide post is hollow tube and lower end sets that there are two symmetrical openings, and the brake includes that circular cone and two ends are hinged on
The brake-shoe on guide post is found, two openings on brake-shoe and vertical guide post are corresponding；The hinge point connection of the brake-shoe is turned round
Spring, torsional spring drive two brake-shoes to draw close in opposite directions；The circular cone is slidably fitted in vertical guide post, the taper end of circular cone downwards and under
End is sandwiched between two brake-shoes, and spring is connected between the lower end of circular cone and the bottom end of vertical guide post；The rectangular guide sleeve and vertical
Two symmetrical strip-shaped holes are equipped on guide post, the strip-shaped hole two-by-two on the rectangular guide sleeve and vertical guide post overlaps；It is described
Screw rod is crossed in strip-shaped hole jointly two-by-two, the both ends of screw rod are connected with nut, gasket is combined between nut and rectangular guide sleeve；
The step of working method includes：
Adjusting screw rod：Before punching press, unscrew nut, dial up screw rod, then the height of lifting handle tightens nut progress
It is fixed, it is carried on screw rod, the stroke more great talent of the rectangular downward punching press of guide sleeve realizes braking, that is, realizes the reduction of stamping parts thickness；
Lower screw rod：Before punching press, unscrew nut, stir screw rod downwards, reduce the height of screw rod, then tightens nut progress
Fixed, screw rod moves down, and the stroke of the rectangular downward punching press of guide sleeve is smaller and realizes braking, that is, realizes the increase of stamping parts thickness；
Punching press：Stamping parts is placed between punch-pin and cavity plate, driving device drives the downward punching press of upper die holder, punch-pin and recessed
The cooperation of mould realizes that the guiding of upper die holder is realized in the punching press of stamping parts, rectangular guide sleeve and the opposite sliding of vertical guide post；
Braking：When punching press, rectangular guide sleeve is moved down with upper die holder, and rectangular guide sleeve drives screw rod to move down, and screw rod is simultaneously
It is slided in strip-shaped hole on rectangular guide sleeve and vertical guide post, when screw rod contact circular cone, that is, reaches application position, screw rod pushes cone
Shape block moves down, and circular cone pushes brake-shoe to be flared out, and the opening and rectangular guide sleeve inner wall that brake-shoe stretches out on vertical guide post offset
It touches, so that rectangular guide sleeve is stopped by frictional force, realize braking.
The advantageous effect of this base case is：It, can be according to the thickness of touch tablet needs pair using above-mentioned technical proposal
The stroke of decompressor is adjusted, and is braked in time when reaching default punching stroke, avoids causing the excessive punching press of touch tablet, to
It is effectively protected notebook computer touchpad, prevents from scrapping.
Scheme two：This is the preferred of basic scheme, inspection of the installation for detecting foreign matter in punch-pin undershoot stroke on punch-pin
Device is surveyed, the output end of detection device is connected with control device, and the output end of the control device connects the driving device；Packet
Following steps are included, whether the lower section for detecting punch-pin by detection device has foreign matter, judges whether there is foreign matter in stamped area, detection
Signal is reflected to control device by device, and then controls the driving device stopping or startup.Behaviour can be detected using detection device
Make the hand of personnel whether in intelligent clever region, if stopping punching press in stamped area, plays safety protection function.
Scheme three：This is the preferred of basic scheme, before punching press, in the surface smear punching oil of stamping parts, is risen to stamping surface
To lubricating action, the surface quality of stamping parts is improved, while certain cooling effect can also be played.
Scheme four：This is preferred, the bonding friction plate on the brake-shoe of basic scheme, when braking, friction plate and side
The inner wall of shape guide sleeve is in contact.Increase the frictional force of rubbing surface, while improving wearability.
Scheme five：This is the preferred of basic scheme, and scale marker, including following step are processed on the outer surface of rectangular guide sleeve
Suddenly, adjusting screw rod when according to scale marker adjusting screw rod position.The scale marker indirect measure punching press thickness of stamping parts, carries
The high precision of processing.
Description of the drawings
Fig. 1 is the structural schematic diagram of touch tablet decompressor in the embodiment of the present invention；
Fig. 2 is the left view structural representation of Fig. 1；
Fig. 3 is the close-up schematic view at A in Fig. 2.
Specific implementation mode
Below by specific implementation mode, the present invention is described in further detail：
Reference numeral in Figure of description includes：Lower die holder 1, pressing plate 12, upper die holder 2, punch-pin 21, stands and leads cavity plate 11
Column 3, brake-shoe 31, friction plate 311, circular cone 32, spring 33, rectangular guide sleeve 4, screw rod 42, nut 42.
Touch tablet decompressor in embodiment is as shown in Figure 1, Figure 2 and Figure 3, a kind of touch tablet decompressor, including phase
To the upper die holder 2 and lower die holder 1 of installation, upper die holder 2 is connected with the driving device for driving, and driving device is hydraulic cylinder, profit
Use hydraulic cylinder as driving device, the torque of application is big, reflection is quick, facilitates braking.Punch-pin 21 is installed on upper die holder 2, under
Cavity plate 11 is installed on die holder 1,11 slot of cavity plate coordinated with punch-pin 21 is formed on cavity plate 11, is equipped with for punching press on cavity plate 11
The pressing plate 12 of molded part flanging.Fixed on lower die holder 1 there are four vertical guide posts 3, and vertical guide post 3 is arranged in parallel, pacifies on upper die holder 2
Equipped with the rectangular guide sleeve 4 being socketed with vertical guide post 3, vertical 3 lower end of guide post is equipped with the brake of connection outer brake pipeline.
Vertical guide post 3 is symmetrical opening there are two hollow tube and lower end processing, and brake includes circular cone 32 and two
End is hinged on the brake-shoe 31 on vertical guide post 3, and two openings on brake-shoe 31 and vertical guide post 3 are corresponding；Brake-shoe 31
Hinge point connects torsional spring, and torsional spring drives two brake-shoes 31 to draw close in opposite directions；Circular cone 32 is slidably fitted in vertical guide post 3, taper
The taper end of block 32 is downwards and lower end is sandwiched between two brake-shoes 31, is connected between the lower end of circular cone 32 and the bottom end of vertical guide post 3
There is spring 33；Two symmetrical strip-shaped holes are machined on rectangular guide sleeve 4 and vertical guide post 3, on rectangular guide sleeve 4 and vertical guide post 3
Strip-shaped hole overlaps two-by-two；Screw rod 42 is crossed in strip-shaped hole jointly two-by-two, the both ends of screw rod 42 are connected with nut 42, nut 42
It is combined with gasket between rectangular guide sleeve 4.Scale marker is processed on the outer surface of rectangular guide sleeve 4, is adjusted according to scale marker
The position of screw rod 42.
The upper end of circular cone 32 is set there are two symmetrical slide head, and the slide head coordinates on the vertical guide post 3
In strip-shaped hole.Limitation by strip-shaped hole to slide head can prevent circular cone 32 from rotating, and improve the steady of the sliding of circular cone 32
It is qualitative.Friction plate 311 is bonded on brake-shoe 31, friction plate 311 is made of rubber, and friction plate 311 can increase frictional force, and
And it is more wear-resisting, extend the service life of brake.
Detection device for detecting foreign matter in 21 undershoot stroke of punch-pin, the output end of detection device are installed on punch-pin 21
It is connected with control device, the output end of control device connects the driving device.The lower section of punch-pin 21 is detected by detection device
Whether foreign matter is had, to whether judge the hand of operating personnel in stamped area, signal is reflected to control device by detection device, into
And stopping or startup are controlled the driving device, play the role of security protection.
The working method of above-mentioned touch tablet decompressor specifically has following four step：
First, before punching press, unscrew nut 42, dial up screw rod 42, then the height of lifting handle 42 tightens nut 42
It is fixed, screw rod 42 above carries, and the stroke more great talent of 4 downward punching press of rectangular guide sleeve realizes braking, that is, realizes stamping parts thickness
Reduce.
Second, before punching press, unscrew nut 42, stir screw rod 42 downwards, reduces the height of screw rod 42, then tighten nut 42
It is fixed, screw rod 42 moves down, and the stroke of 4 downward punching press of rectangular guide sleeve is smaller and realizes braking, that is, realizes stamping parts thickness
Increase.
Stamping parts is placed between punch-pin 21 and cavity plate 11 by third, before punching press, in the surface smear punching press of stamping parts
Oil, driving device drive 2 downward punching press of upper die holder, the cooperation of punch-pin 21 and cavity plate 11 to realize the punching press of stamping parts, rectangular guide sleeve 4
The guiding of upper die holder 2 is realized in opposite sliding with vertical guide post 3.
4th, when punching press, rectangular guide sleeve 4 is moved down with upper die holder 2, and rectangular guide sleeve 4 drives screw rod 42 to move down, screw rod
42 slide in strip-shaped hole on rectangular guide sleeve 4 and vertical guide post 3 simultaneously, when screw rod 42 contacts circular cone 32, that is, reach retarder location
It sets, screw rod 42 pushes circular cone 32 to move down, and circular cone 32 pushes brake-shoe 31 to be flared out, and brake-shoe 31, which stretches out, to be stood on guide post 3
Opening and 4 inner wall of rectangular guide sleeve it is inconsistent, by frictional force make rectangular guide sleeve 4 stop, realize braking.
Above-described is only the embodiment of the present invention, and the common sense such as well known specific technical solution were not made herein in scheme
More descriptions.It should be pointed out that for those skilled in the art, under the premise of not departing from technical solution of the present invention, may be used also
To make several improvements, these should also be considered as protection scope of the present invention, these all do not interfere with the effect that the present invention is implemented
And patent practicability.The scope of protection required by this application should be based on the content of the claims, specific in specification
The records such as embodiment can be used for explaining the content of claim.
Claims (5)
1. a kind of working method of touch tablet decompressor, the touch tablet decompressor include the upper die holder being oppositely arranged and lower die
Seat, the upper die holder are connected with the driving device for driving, and the upper die holder is equipped with punch-pin, and the lower die holder is equipped with recessed
Mould, the cavity plate slot coordinated with punch-pin is formed on the cavity plate, and the cavity plate is equipped with the pressing plate for punch forming part flanging；Institute
It states and is fixed with vertical guide post on lower die holder, the upper die holder is equipped with the rectangular guide sleeve being socketed with vertical guide post, the vertical guide post lower end
Brake equipped with connection outer brake pipeline, the vertical guide post are that hollow tube and lower end set that there are two symmetrical opening, institutes
State that brake includes circular cone and two ends are hinged on brake-shoe on vertical guide post, two openings on brake-shoe and vertical guide post
It is corresponding；The hinge point of the brake-shoe connects torsional spring, and torsional spring drives two brake-shoes to draw close in opposite directions；The circular cone sliding is matched
It closes in vertical guide post, the taper end of circular cone is downwards and lower end is sandwiched between two brake-shoes, the bottom of the lower end of circular cone and vertical guide post
Spring is connected between end；Two symmetrical strip-shaped holes, the rectangular guide sleeve are equipped on the rectangular guide sleeve and vertical guide post
It overlaps with the strip-shaped hole two-by-two on vertical guide post；Screw rod is crossed in the strip-shaped hole two-by-two jointly, the both ends of screw rod are connected with
Nut is combined with gasket between nut and rectangular guide sleeve；It is characterized in that the step of working method, includes：
Adjusting screw rod：Before punching press, unscrew nut, dial up screw rod, then the height of lifting handle is tightened nut and consolidated
It is fixed, it is carried on screw rod, the stroke more great talent of the rectangular downward punching press of guide sleeve realizes braking, that is, realizes the reduction of stamping parts thickness；
Lower screw rod：Before punching press, unscrew nut, stir screw rod downwards, reduce the height of screw rod, then tightens nut and consolidated
Fixed, screw rod moves down, and the stroke of the rectangular downward punching press of guide sleeve is smaller and realizes braking, that is, realizes the increase of stamping parts thickness；
Punching press：Stamping parts is placed between punch-pin and cavity plate, driving device drives the downward punching press of upper die holder, punch-pin and cavity plate
Cooperation realizes that the guiding of upper die holder is realized in the punching press of stamping parts, rectangular guide sleeve and the opposite sliding of vertical guide post；
Braking：When punching press, rectangular guide sleeve is moved down with upper die holder, and rectangular guide sleeve drives screw rod to move down, and screw rod is simultaneously in side
Sliding in strip-shaped hole on shape guide sleeve and vertical guide post reaches application position when screw rod contact circular cone, screw rod pushes circular cone
It moves down, circular cone pushes brake-shoe to be flared out, and the opening and rectangular guide sleeve inner wall on the vertical guide post of brake-shoe stretching are inconsistent, lead to
Crossing frictional force makes rectangular guide sleeve stop, and realizes braking.
2. the working method of touch tablet decompressor according to claim 1, it is characterised in that：It installs and is used on punch-pin
The detection device of foreign matter in punch-pin undershoot stroke is detected, the output end of detection device is connected with control device, the control device
Output end connect the driving device；Further comprising the steps of, whether the lower section for detecting punch-pin by detection device has foreign matter,
Foreign matter is judged whether there is in stamped area, signal is reflected to control device by detection device, and then control the driving device stopping or
It is to start.
3. the working method of touch tablet decompressor according to claim 1, it is characterised in that：Before punching press, in stamping parts
Surface smear punching oil.
4. the working method of touch tablet decompressor according to claim 1, it is characterised in that：It is glued on the brake-shoe
Connect friction plate, when braking, the inner wall of friction plate and rectangular guide sleeve is in contact.
5. the working method of touch tablet decompressor according to claim 1, it is characterised in that：In the appearance of rectangular guide sleeve
Scale marker is processed on face, it is further comprising the steps of, according to the position of scale marker adjusting screw rod when adjusting screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610762995.4A CN106140983B (en) | 2016-08-30 | 2016-08-30 | The working method of touch tablet decompressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610762995.4A CN106140983B (en) | 2016-08-30 | 2016-08-30 | The working method of touch tablet decompressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106140983A CN106140983A (en) | 2016-11-23 |
| CN106140983B true CN106140983B (en) | 2018-08-17 |
Family
ID=57345380
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610762995.4A Active CN106140983B (en) | 2016-08-30 | 2016-08-30 | The working method of touch tablet decompressor |
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| Country | Link |
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| CN (1) | CN106140983B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108180691A (en) * | 2018-02-09 | 2018-06-19 | 新乡学院 | A kind of rhone and its stamping die and Sheet Metal Forming Technology |
| CN111889583B (en) * | 2020-07-24 | 2022-03-11 | 舟山海山机械密封材料股份有限公司 | A spacing mistake proofing device for stamping die |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0484590A1 (en) * | 1990-11-06 | 1992-05-13 | Lucas Industries Public Limited Company | Drum brake with guide tube for guiding the handbrake cable |
| US20050205367A1 (en) * | 2002-11-22 | 2005-09-22 | Vincent Dupuis | Drum brake and brake shoe for one such brake |
| CN1880790A (en) * | 2005-08-03 | 2006-12-20 | 王传伟 | Brake booster |
| CN103302189A (en) * | 2013-06-28 | 2013-09-18 | 苏州唐氏机械制造有限公司 | Stamping die with braking function |
| CN204140703U (en) * | 2014-09-24 | 2015-02-04 | 重庆电子工程职业学院 | Drum brake |
-
2016
- 2016-08-30 CN CN201610762995.4A patent/CN106140983B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0484590A1 (en) * | 1990-11-06 | 1992-05-13 | Lucas Industries Public Limited Company | Drum brake with guide tube for guiding the handbrake cable |
| US20050205367A1 (en) * | 2002-11-22 | 2005-09-22 | Vincent Dupuis | Drum brake and brake shoe for one such brake |
| CN1880790A (en) * | 2005-08-03 | 2006-12-20 | 王传伟 | Brake booster |
| CN103302189A (en) * | 2013-06-28 | 2013-09-18 | 苏州唐氏机械制造有限公司 | Stamping die with braking function |
| CN204140703U (en) * | 2014-09-24 | 2015-02-04 | 重庆电子工程职业学院 | Drum brake |
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| Publication number | Publication date |
|---|---|
| CN106140983A (en) | 2016-11-23 |
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Effective date of registration: 20191111 Address after: 215100 Building 2, No. 66, Jixiang Road, Xukou Town, Wuzhong District, Suzhou City, Jiangsu Province Patentee after: Suzhou Changli rubber and Plastic Technology Co., Ltd. Address before: 402561 No. 20 Jinlong Road, Tongliang Industrial Zone, Chongqing Patentee before: Tongliang District, Chongqing City Teng Teng electronic technology Co., Ltd. |