CN110871239B - Equivalent variable water inlet pipe forming process - Google Patents
Equivalent variable water inlet pipe forming process Download PDFInfo
- Publication number
- CN110871239B CN110871239B CN202010049315.0A CN202010049315A CN110871239B CN 110871239 B CN110871239 B CN 110871239B CN 202010049315 A CN202010049315 A CN 202010049315A CN 110871239 B CN110871239 B CN 110871239B
- Authority
- CN
- China
- Prior art keywords
- pipe
- blank
- pipe blank
- mold
- straight
- 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.)
- Active
Links
Images
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
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/005—Processes combined with methods covered by groups B21D1/00 - B21D31/00 characterized by the material of the blank or the workpiece
-
- 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
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/18—Joggling
-
- 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
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
-
- 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
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/28—Associations of cutting devices therewith
- B21D43/285—Devices for handling elongated articles, e.g. bars, tubes or profiles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention provides a forming process of an equivalent variable water inlet pipe, which comprises the following steps: s1, preparing materials, and preparing the pipe fitting to be processed; s2, manufacturing a pipe blank, and bending the pipe fitting to be processed into a specific shape; s3, molding: s31, placing the pipe blank into a mold, closing the mold, and applying a mold closing force; s32, filling a liquid medium into a pipe blank, wherein one end of the pipe blank is arranged in a sealing manner, and the other end of the pipe blank is provided with a pressurizing device; s33, pressurizing the liquid medium of the pipe blank through a pressurizing device, and fitting and forming the pipe blank and the die cavity under the combined action of liquid pressure and a die closing force; and S34, taking the parts. Due to the adoption of the technical scheme, compared with the prior art, the invention has the advantages that: 1. the shape and the precision of the molded part are ensured by adopting the mold, the range of the molded part is greatly expanded, and the precision of the molded part is improved; 2. the manufacturability of the part is effectively improved, and the application range of the formed part is expanded.
Description
Technical Field
The present invention relates to the field of engine component manufacturing.
In particular to a forming process of an equivalent variable water inlet pipe used on an engine.
Background
The equivalent variation water inlet pipe is a part used on an engine, and the forming process of the equivalent variation water inlet pipe adopts a mechanical shape correction mode to ensure the forming precision of parts. However, for some components, such as some closed shells or closed cross-section components with curved axial directions, the orthopedic female die is difficult to extend into the cross section of the component, a mechanical orthopedic method cannot be adopted, and the forming precision is difficult to guarantee. How to accurately form the thin-wall welded shell and the large-section differential hollow component and effectively ensure the precision of the formed part is a main problem faced by the forming of the part.
Disclosure of Invention
The invention aims to overcome the defects of the traditional technology and provide the equivalent variable water inlet pipe forming process with high part forming precision.
The aim of the invention is achieved by the following technical measures:
a forming process of an equivalent variable water inlet pipe comprises the following steps:
s1, preparing materials, and preparing the pipe fitting to be processed;
s2, manufacturing a pipe blank, and bending the pipe fitting to be processed into a specific shape;
s3, molding:
s31, placing the pipe blank into a mold, closing the mold, and applying a mold closing force;
s32, filling a liquid medium into a pipe blank, wherein one end of the pipe blank is arranged in a sealing manner, and the other end of the pipe blank is provided with a pressurizing device;
s33, pressurizing the liquid medium of the pipe blank through a pressurizing device, and fitting and forming the pipe blank and the die cavity under the combined action of liquid pressure and a die closing force;
and S34, taking the parts.
Pressurizing the liquid medium of the pipe blank, deforming the pipe blank under the action of the liquid medium, fitting the pipe blank with a mold cavity, and limiting the appearance of the pipe blank by the mold.
As an improvement: in step S2, the pipe blank includes a straight pipe portion, one end of the straight pipe portion is provided with a first bending portion, and the other end of the straight pipe portion is provided with a second bending portion.
The pipe fitting to be processed is bent into a pipe blank with a specific shape, and the pipe blank is conveniently placed in a die.
As an improvement: an included angle is formed between the first bending part and the straight pipe part, the included angle is 90 degrees to 120 degrees, an included angle is formed between the second bending part and the straight pipe part, and the included angle is 90 degrees to 120 degrees.
The pipe fitting to be processed is bent into a pipe blank with a specific shape, and the pipe blank is conveniently placed in a die.
As an improvement: the first bending part and the second bending part are arranged in parallel.
The pipe fitting to be processed is bent into a pipe blank with a specific shape, and the pipe blank is conveniently placed in a die.
As an improvement: further comprising:
and step S4, cutting, namely cutting the pipe blank along the middle part of the straight pipe part and cutting the pipe blank into two parts.
The pipe blank is in a point-symmetrical shape, and two parts with the same shape are formed after the pipe blank is cut along the middle part of the straight pipe part, so that the production efficiency is improved.
As an improvement: in step S33, the straight tube portion has a rectangular cross section at a middle portion thereof, the first bent portion has a circular cross section at an end thereof remote from the straight tube portion, and the second bent portion has a circular cross section at an end thereof remote from the straight tube portion.
As an improvement: in step S34, after the molding is completed, the sealing device is removed, the mold is opened, and the molded tube blank is taken out.
And (3) releasing the pressure of the liquid medium to 0Mpa, releasing the mold closing force to 0kN, and conveniently taking out the formed pipe blank.
As an improvement: further comprising:
and step S5, welding a flange plate, and welding the flange plate at the cutting position of the product S4.
As an improvement: further comprising:
and step S6, welding the pipe joint, and welding the pipe joint at a position far away from the cutting position of the S4 product.
As an improvement: in step S32, the liquid medium is water, oil, or an emulsion.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the advantages that:
1. the shape and the precision of the molded part are ensured by adopting the mold, the range of the molded part is greatly expanded, and the precision of the molded part is improved;
2. the manufacturability of the part is effectively improved, and the application range of the formed part is expanded.
The invention is further described with reference to the following figures and detailed description.
Drawings
FIG. 1 is a schematic structural diagram of a pipe blank in the equivalent metamorphic water inlet pipe forming process of the present invention.
FIG. 2 is a schematic structural diagram of a pipe blank after internal high pressure forming in the equivalent metamorphic water inlet pipe forming process.
FIG. 3 is a schematic structural diagram of a cut pipe blank in the equivalent metamorphic water inlet pipe forming process of the present invention.
FIG. 4 is a schematic structural diagram of a pipe fitting in the equivalent variation water inlet pipe forming process of the present invention.
Fig. 5 is a left side view of fig. 4.
In the figure: 1-a straight tube portion; 2-a first bending part; 3-a second bending part; 4-a flange plate; 5-pipe joint.
Detailed Description
Example 1: as shown in the attached fig. 1 to 5, a forming process of an equivalent variable water inlet pipe comprises the following steps:
and S1, preparing materials and preparing the pipe fitting to be processed.
S2, manufacturing a pipe blank, and bending the pipe fitting to be processed into a specific shape; the pipe blank comprises a straight pipe part 1, wherein one end of the straight pipe part 1 is provided with a first bent part 2, the other end of the straight pipe part 1 is provided with a second bent part 3, an included angle A is formed between the first bent part 2 and the straight pipe part 1, the included angle A is 90 degrees, an included angle B is formed between the second bent part 3 and the straight pipe part 1, and the included angle B is 90 degrees;
the first bending part 2 and the second bending part 3 are arranged in parallel.
S3, molding:
s31, placing the pipe blank into a mold, closing the mold, and applying a mold closing force;
s32, filling a liquid medium into the pipe blank, wherein the liquid medium is water, oil or emulsion, one end of the pipe blank is arranged in a sealing manner, and the other end of the pipe blank is provided with a pressurizing device;
and S33, pressurizing the liquid medium of the pipe blank through a pressurizing device, and fitting the pipe blank with a mold cavity under the combined action of liquid pressure and mold clamping force, wherein the section of the middle part of the straight pipe part 1 is rectangular, the section of one end, away from the straight pipe part 1, of the first bent part 2 is circular, and the section of one end, away from the straight pipe part 1, of the second bent part 3 is circular. The cross-sectional area of the middle part of the straight pipe part 1 is the same as that of the end of the first bent part 2 far away from the straight pipe part 1, and the cross-sectional area of the middle part of the straight pipe part 1 is the same as that of the end of the second bent part 3 far away from the straight pipe part 1. Can prevent the formation of vortex well, make rivers stable, reduce cooling water circulation resistance.
S34, taking out the part, withdrawing the sealing device after the molding is finished, opening the mold, and taking out the molded pipe blank;
and S4, cutting the pipe blank along the middle part of the straight pipe part 1, and cutting the pipe blank into two parts.
And S5, welding the flange plate 4, and welding the flange plate 4 at the cutting position of the S4 product.
S6, welding the pipe joint 5 away from the cut at the S4 product.
Example 2: as shown in the attached fig. 1 to 5, a forming process of an equivalent variable water inlet pipe comprises the following steps:
and S1, preparing materials and preparing the pipe fitting to be processed.
S2, manufacturing a pipe blank, and bending the pipe fitting to be processed into a specific shape; the pipe blank comprises a straight pipe part 1, wherein one end of the straight pipe part 1 is provided with a first bent part 2, the other end of the straight pipe part 1 is provided with a second bent part 3, an included angle A is formed between the first bent part 2 and the straight pipe part 1, the included angle A is 106 degrees, an included angle B is formed between the second bent part 3 and the straight pipe part 1, and the included angle B is 106 degrees;
the first bending part 2 and the second bending part 3 are arranged in parallel.
S3, molding:
s31, placing the pipe blank into a mold, closing the mold, and applying a mold closing force;
s32, filling a liquid medium into the pipe blank, wherein the liquid medium is water, oil or emulsion, one end of the pipe blank is arranged in a sealing manner, and the other end of the pipe blank is provided with a pressurizing device;
and S33, pressurizing the liquid medium of the pipe blank through a pressurizing device, and fitting the pipe blank with a mold cavity under the combined action of liquid pressure and mold clamping force, wherein the section of the middle part of the straight pipe part 1 is rectangular, the section of one end, away from the straight pipe part 1, of the first bent part 2 is circular, and the section of one end, away from the straight pipe part 1, of the second bent part 3 is circular. The cross-sectional area of the middle part of the straight pipe part 1 is the same as that of the end of the first bent part 2 far away from the straight pipe part 1, and the cross-sectional area of the middle part of the straight pipe part 1 is the same as that of the end of the second bent part 3 far away from the straight pipe part 1. Can prevent the formation of vortex well, make rivers stable, reduce cooling water circulation resistance.
S34, taking out the part, withdrawing the sealing device after the molding is finished, opening the mold, and taking out the molded pipe blank;
and S4, cutting the pipe blank along the middle part of the straight pipe part 1, and cutting the pipe blank into two parts.
And S5, welding the flange plate 4, and welding the flange plate 4 at the cutting position of the S4 product.
S6, welding the pipe joint 5 away from the cut at the S4 product.
Example 3: as shown in the attached fig. 1 to 5, a forming process of an equivalent variable water inlet pipe comprises the following steps:
and S1, preparing materials and preparing the pipe fitting to be processed.
S2, manufacturing a pipe blank, and bending the pipe fitting to be processed into a specific shape; the pipe blank comprises a straight pipe part 1, wherein one end of the straight pipe part 1 is provided with a first bent part 2, the other end of the straight pipe part 1 is provided with a second bent part 3, an included angle A is formed between the first bent part 2 and the straight pipe part 1, the included angle A is 120 degrees, an included angle B is formed between the second bent part 3 and the straight pipe part 1, and the included angle B is 120 degrees;
the first bending part 2 and the second bending part 3 are arranged in parallel.
S3, molding:
s31, placing the pipe blank into a mold, closing the mold, and applying a mold closing force;
s32, filling a liquid medium into the pipe blank, wherein the liquid medium is water, oil or emulsion, one end of the pipe blank is arranged in a sealing manner, and the other end of the pipe blank is provided with a pressurizing device;
and S33, pressurizing the liquid medium of the pipe blank through a pressurizing device, and fitting the pipe blank with a mold cavity under the combined action of liquid pressure and mold clamping force, wherein the section of the middle part of the straight pipe part 1 is rectangular, the section of one end, away from the straight pipe part 1, of the first bent part 2 is circular, and the section of one end, away from the straight pipe part 1, of the second bent part 3 is circular. The cross-sectional area of the middle part of the straight pipe part 1 is the same as that of the end of the first bent part 2 far away from the straight pipe part 1, and the cross-sectional area of the middle part of the straight pipe part 1 is the same as that of the end of the second bent part 3 far away from the straight pipe part 1. Can prevent the formation of vortex well, make rivers stable, reduce cooling water circulation resistance.
S34, taking out the part, withdrawing the sealing device S after the molding is finished, opening the mold, and taking out the molded pipe blank;
and S4, cutting the pipe blank along the middle part of the straight pipe part 1, and cutting the pipe blank into two parts.
And S5, welding the flange plate 4, and welding the flange plate 4 at the cutting position of the S4 product.
S6, welding the pipe joint 5 away from the cut at the S4 product.
Although several embodiments of the present invention have been described in detail, the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (7)
1. The forming process of the equivalent variable water inlet pipe is characterized by comprising the following steps of:
s1, preparing materials, and preparing the pipe fitting to be processed;
s2, manufacturing a pipe blank, and bending the pipe fitting to be processed into a specific shape; the pipe blank comprises a straight pipe part (1), a first bent part (2) is arranged at one end of the straight pipe part (1), and a second bent part (3) is arranged at the other end of the straight pipe part (1); the first bending part (2) and the second bending part (3) are arranged in parallel;
s3, molding:
s31, placing the pipe blank into a mold, closing the mold, and applying a mold closing force;
s32, filling a liquid medium into a pipe blank, wherein one end of the pipe blank is arranged in a sealing manner, and the other end of the pipe blank is provided with a pressurizing device;
s33, pressurizing the liquid medium of the pipe blank through a pressurizing device, and fitting and forming the pipe blank and the die cavity under the combined action of liquid pressure and a die closing force;
s34, taking a piece;
and S4, cutting, namely cutting the pipe blank along the middle part of the straight pipe part (1) and cutting the pipe blank into two parts.
2. The forming process of an equivalent variable water inlet pipe according to claim 1, wherein: be equipped with contained angle (A) between first kink (2) and straight tube portion (1), the angle of contained angle (A) is 90 to 120, be equipped with contained angle (B) between second kink (3) and straight tube portion (1), the angle of contained angle (B) is 90 to 120.
3. The forming process of an equivalent variable water inlet pipe according to claim 1, wherein: in step S33, the cross section of the middle portion of the straight tube portion (1) is rectangular, the cross section of the end of the first bent portion (2) away from the straight tube portion (1) is circular, the cross section of the end of the second bent portion (3) away from the straight tube portion (1) is circular, the cross section area of the middle portion of the straight tube portion (1) is the same as the cross section area of the end of the first bent portion (2) away from the straight tube portion (1), and the cross section area of the middle portion of the straight tube portion (1) is the same as the cross section area of the end of the second bent portion (3) away from the straight tube portion (1).
4. A process for forming an equivalent variable inlet pipe according to any one of claims 1 to 3, wherein: in step S34, after the molding is completed, the sealing device is removed, the mold is opened, and the molded tube blank is taken out.
5. A process for forming an equivalent variable inlet pipe according to any one of claims 1 to 3, wherein: further comprising:
and S5, welding the flange plate (4), and welding the flange plate (4) at the product cutting position of the step S4.
6. A process for forming an equivalent variable inlet pipe according to any one of claims 1 to 3, wherein: further comprising:
step S6, welding the pipe joint (5) away from the cut site as a result of step S4.
7. A process for forming an equivalent variable inlet pipe according to any one of claims 1 to 3, wherein: in step S32, the liquid medium is water, oil, or an emulsion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010049315.0A CN110871239B (en) | 2020-01-17 | 2020-01-17 | Equivalent variable water inlet pipe forming process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010049315.0A CN110871239B (en) | 2020-01-17 | 2020-01-17 | Equivalent variable water inlet pipe forming process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110871239A CN110871239A (en) | 2020-03-10 |
| CN110871239B true CN110871239B (en) | 2020-05-19 |
Family
ID=69718459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010049315.0A Active CN110871239B (en) | 2020-01-17 | 2020-01-17 | Equivalent variable water inlet pipe forming process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110871239B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111957804B (en) * | 2020-07-20 | 2021-06-29 | 燕山大学 | Device for liquid-filling bending forming of thin-walled tube and forming method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5419042A (en) * | 1990-07-24 | 1995-05-30 | Sanden Corporation | Method for temporarily assembling a heat exchanger |
| CN1323665A (en) * | 2001-04-09 | 2001-11-28 | 南海市黄岐庆联五金机械厂 | Stainless steel water tap machining process |
| CN104646962A (en) * | 2015-01-08 | 2015-05-27 | 舟山市奥博管业有限公司 | Preparation method for oil return tube of booster |
| CN105834273A (en) * | 2016-03-30 | 2016-08-10 | 成霖企业股份有限公司 | Hydraulic forming method of pipe |
| CN207960764U (en) * | 2017-12-29 | 2018-10-12 | 潍坊贝金机械有限公司 | Equivalent mutation water inlet pipe |
-
2020
- 2020-01-17 CN CN202010049315.0A patent/CN110871239B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5419042A (en) * | 1990-07-24 | 1995-05-30 | Sanden Corporation | Method for temporarily assembling a heat exchanger |
| CN1323665A (en) * | 2001-04-09 | 2001-11-28 | 南海市黄岐庆联五金机械厂 | Stainless steel water tap machining process |
| CN104646962A (en) * | 2015-01-08 | 2015-05-27 | 舟山市奥博管业有限公司 | Preparation method for oil return tube of booster |
| CN105834273A (en) * | 2016-03-30 | 2016-08-10 | 成霖企业股份有限公司 | Hydraulic forming method of pipe |
| CN207960764U (en) * | 2017-12-29 | 2018-10-12 | 潍坊贝金机械有限公司 | Equivalent mutation water inlet pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110871239A (en) | 2020-03-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102554009B (en) | Fluid pressure forming method for small-radius elbow | |
| CN109465368B (en) | Blank-making forming method for large-section-ratio complex-shape mutation shaft aluminum alloy forging | |
| CN103537509B (en) | A kind of large-scale multi-nozzle pipeline thermal extrusion forming process is formulated and die design method | |
| CN110871239B (en) | Equivalent variable water inlet pipe forming process | |
| CN105689486A (en) | Multistage continuous large deformation part internal high-pressure forming method and device | |
| CN102490301A (en) | Micropart powder compression molding method | |
| CN102962308A (en) | Special internal high pressure shaping method for thin-wall welded shell | |
| JP2020062679A (en) | Bent pipe manufacturing method | |
| CN110695157B (en) | Method for precisely processing sharp bend of titanium alloy thin-walled tube | |
| CN105834273B (en) | A kind of pipe fitting shaped by fluid pressure method | |
| CN106424180A (en) | Extruding device and method for double-mouth and thick-wall pipe blank extrusion manufacturing | |
| CN105921587B (en) | A kind of forming and machining method of three branch pipes side by side | |
| CN101700543A (en) | Molding method of non-standard bent pipe mold | |
| CN109127850B (en) | Solid-liquid two-phase medium internal high-pressure forming method for special-shaped section thin-wall pipe fitting | |
| CN101745782A (en) | Method for manufacturing hot segment of bent pipe of main pipeline of reactor | |
| CN108345703B (en) | Internal high-pressure forming optimization analysis method and system based on CAE | |
| CN212397772U (en) | Die for single-clamp clamping and pressing pipe forming | |
| CN210637535U (en) | Ball valve core | |
| CN109063315A (en) | A kind of flaring catheter length control method based on Digitized manufacturing | |
| JP3839787B2 (en) | Manufacturing method of double wall hollow metal parts | |
| CN105081046B (en) | Hydroforming flexible seal device | |
| CN111974866A (en) | Die for forming double-clamping pressure pipe | |
| CN207508061U (en) | Slip yoke preform | |
| CN112793139A (en) | Machining device and method for thin-wall small-diameter medical reducer pipe | |
| CN106563718B (en) | A kind of warm forming method of the seamless tunneltron of big radius-thickness ratio |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | 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: 20211222 Address after: 261000 room 225-3, building 1, north of East Guihua Road, Gaoer Road, comprehensive free trade zone, Weifang City, Shandong Province Patentee after: Shandong kerismu Power Co.,Ltd. Address before: 261000 No. 1, Beifeng Community Industrial Park, Xinchang street, high tech Zone, Weifang City, Shandong Province Patentee before: WEIFANG BEIJIN MACHINERY CO.,LTD. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220817 Address after: Weichai International Supporting Industrial Park, east of Gaoqi Road, Jiacommunity, Wenquan Development Section, High-tech Zone, Weifang City, Shandong Province, 261000 Patentee after: Shandong Huatang New Material Technology Co., Ltd. Address before: 261000 room 225-3, building 1, north of East Guihua Road, Gaoer Road, comprehensive free trade zone, Weifang City, Shandong Province Patentee before: Shandong kerismu Power Co.,Ltd. |