CN104015325B - A kind of heat-shrink tube process equipment - Google Patents
A kind of heat-shrink tube process equipment Download PDFInfo
- Publication number
- CN104015325B CN104015325B CN201410245708.3A CN201410245708A CN104015325B CN 104015325 B CN104015325 B CN 104015325B CN 201410245708 A CN201410245708 A CN 201410245708A CN 104015325 B CN104015325 B CN 104015325B
- Authority
- CN
- China
- Prior art keywords
- heat
- shrink tube
- oil cylinder
- process equipment
- tube process
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0011—Combinations of extrusion moulding with other shaping operations combined with compression moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92009—Measured parameter
- B29C2948/92209—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention provides a kind of heat-shrink tube process equipment, structure comprises electric cabinet, and the extrusion mechanism be fixed on bearing and the builder of fixed connection on support, extrusion mechanism is disposed with holder from top to bottom, guide rail, oil cylinder, ejector beam bottom slip cap in its middle guide is located in oil cylinder, the top of ejector beam is docked with the barrel on holder, barrel inside offers and expects the conical running channel that mouth inside is conducted, the shaping dies that an inside is embedded with core rod is held above running channel, builder is disposed with drying plant from top to bottom, agglomerating plant, nip roll machine, wherein the surface of drying plant and agglomerating plant is covered with heat-insulation layer, agglomerating plant interior separation is sintering stage and constant temperature zone, the property of the present invention is directed to is strong, overall floor space is little, can cost-saving and production process, working condition is easy to control, production efficiency is high, and the heat-shrink tube steady quality produced, there is good pliability, long service life.<!-- 2 -->
Description
Technical field
The present invention relates to a kind of process equipment of tubing, specifically refer to a kind of heat-shrink tube process equipment.
Background technology
The aspects such as heat-shrink tube belongs to polyolefin material, has the function such as high-temperature shrinkage, soft fire-retardant, insulation corrosion protection, is widely used in the insulation protection of various wire harness, solder joint, inductance, antirust, the corrosion protection of metal tube, rod.
Heat-shrink tube is generally completed it produced by extrusion equipment, firing equipment, expansion device, but these equipment are all independently single equipment each other, heat-shrink tube needs manually constantly to be transferred to next equipment from a upper equipment in process of production, cannot be produced by heat-shrink tube on a set of equipment.A lot of realistic problem can be brought like this.
First: every platform equipment all needs to be equipped with corresponding operating personnel, adds the operation cost of enterprise; Secondly: numerous occupation area of equipment is large, transport, install, dismounting is very difficult, as firing equipment is generally 6 joints, highly at least reach 20 meters, maintenance cost is high, adds the production cost of enterprise; Again: process is complicated, and working condition is wayward, power consumption is large, and the properties of product produced are uneven, and quality is unsecured; Finally, what extrusion equipment adopted is machine driving, in production process, not only mechanicalness noise is large, workshop condition is poor, and pushing speed is slow, needing often stops work regulates, and cannot meet constant speed quantity-produced needs, increasing operational difficulty, is also the reason causing production efficiency always cannot improve.The price of heat-shrink tube is remained high for a long time, impacts to the application of the supply in market and industry.
Summary of the invention
For the deficiency existing for above-mentioned background technology, the invention provides a kind of heat-shrink tube process equipment, multiple production equipment is integrated into one, make heat-shrink tube once shaping on an equipment, there is production efficiency high, the advantage that working condition is controlled, and the heat-shrink tube stable performance of producing, quality is guaranteed.
For achieving the above object, the present invention is achieved in the following ways: a kind of heat-shrink tube process equipment, and structure comprises electric cabinet, and the extrusion mechanism be connected with electric cabinet respectively and builder.Extrusion mechanism is fixed on bearing, builder fixed connection is on support, described extrusion mechanism is disposed with holder, guide rail, oil cylinder from top to bottom, its middle guide is located on the periphery of oil cylinder, ejector beam bottom slip cap in guide rail is located in oil cylinder, and the top of ejector beam is docked with the barrel on holder; Described builder is disposed with drying plant, agglomerating plant, nip roll machine from top to bottom, wherein the surface of drying plant and agglomerating plant is covered with heat-insulation layer, nip roll machine inside is provided with at least one pair of horizontally-opposed roller set, and the side of roller set is also provided with dilatation mold.
Further step is: described holder formed by fixing top board, fixed base plate and fixed side, fixing top board is separately installed with turning cylinder and material mouth, wherein turning cylinder lower end extends to fixed base plate and is sheathed in corresponding turning cylinder oil cylinder, the below of material mouth is installed with material lid, the mode that material lid and the barrel on fixed base plate are threaded connection is fastening, the upper end of material mouth is fixed with upper block and ion brush in side, fixed side places the horizontal fixed bar for regulating the holder degree of balance.
Described barrel inside offers and expects the conical running channel that mouth inside is conducted, the shaping dies that an inside is embedded with core rod is held above running channel, this core rod is copper wire line hollow structure, bottom and the running channel of core rod connect, and the top of core rod extends to and expects that mouth top exports the position maintained an equal level mutually.The core rod of copper material can not be too hard, has certain pliability.
Described oil cylinder is the fluid pressure type telescopic oil cylinder that load force is not less than 8 tons, and oil cylinder is connected to oil storage cabin by petroleum pipeline, and this oil storage cabin is connected to electric cabinet.Compacting compresses the heat shrinkable pipe material in barrel to adopt the object of large-tonnage oil cylinder to be, improves unit intensity, prevents loose, take a firm foundation for material is extruded into heat-shrink tube semi-finished product.
Described drying plant top shelf is provided with lower tumbler, and drying plant is Electrothermal ring or quartz heating layer, and the temperature range of drying plant is 250 DEG C---and 450 DEG C, to vapor away alkane solvent in heat shrinkable pipe material and other pernicious gas.
Described agglomerating plant interior separation is the sintering stage of upper part and the constant temperature zone of lower part, wherein sintering stage is vertical tubular sintering furnace or horizontal sinter box, the temperature range of sintering stage is 400 DEG C---800 DEG C, object is to avoid occurring that heat-shrink tube wire rod easily breaks, without pulling force, inviscid situation; Constant temperature zone is infrared hot plate or Electrothermal ring, the temperature range of constant temperature zone is 300 DEG C---400 DEG C, because 327 DEG C of molten points that are it, and 400 DEG C is its boiling point, therefore the temperature of constant temperature zone is controlled at 300 DEG C---within the scope of 400 DEG C, can prevent from damaging wire rod pipe, but conscientiously wire rod pipe can be become the soft state being convenient to the sizing of next step air expander.
Described nip roll machine surface is installed with the adjustment rotating disk for adjustment roll wheels elasticity.
Described dilatation mold is gas operated dilatation mold, and this dilatation mold can be installed vertically on any place above or below roller set.
The present invention compared with prior art, with strong points, multiple stage process equipment is effectively integrated, overall floor space is little, save a large amount of artificial operation cost and cost of equipment maintenance, the heat-shrink tube of different size need only change the shaping dies of different size, production efficiency significantly improves, temperature when Whole Equipment runs simultaneously, speed, load force etc. carry out regulable control by electric cabinet, the condition of preparation technology is easy to control, solve existing technics comparing complicated, the deficiency that production cost is high, machine driving is replaced with hydraulic drive, reduce energy consumption and propose noise pollution, meet environmental requirement, be applicable to large-scale industrial production, there are high market prospects.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is the internal structure sketch of barrel of the present invention.
Detailed description of the invention
Shown in composition graphs 1 to Fig. 2, heat-shrink tube process equipment of the present invention is by electric cabinet 1, and the extrusion mechanism be connected with electric cabinet 1 respectively and builder formed.
The extrusion mechanism be fixed on bearing 2 is disposed with holder 21, guide rail 22 from top to bottom and adopts the oil cylinder 23 of fluid pressure type stretching structure.Oil cylinder 23 is connected to oil storage cabin 231 by petroleum pipeline 230, holder 21 is by fixing top board 210, fixed base plate 211 and fixed side 212 formed, fixing top board 210 is separately installed with turning cylinder 213 and material mouth 214, wherein turning cylinder 213 lower end extends to fixed base plate 211 and is sheathed in corresponding turning cylinder oil cylinder, the below of material mouth 214 is installed with material lid 215, the mode that material lid 215 and the barrel 216 on fixed base plate 211 are threaded connection is fastening, the upper end of material mouth 214 is fixed with upper block 218 and ion brush 219 in side, fixed side 212 places the horizontal fixed bar 217 for regulating holder 21 degree of balance, guide rail 22 is located on the periphery of oil cylinder 23, ejector beam 220 bottom slip cap in guide rail 22 is located in oil cylinder 23, the top of ejector beam 220 is docked with the barrel 216 on holder 21.
Barrel 216 inside offers and expects the conical running channel 2160 that mouth 214 inside is conducted, the shaping dies 2161 that an inside is embedded with core rod 2162 is held above running channel 2160, core rod 2162 is copper wire line hollow structure, bottom and the running channel 2160 of core rod 2162 connect, and the top of core rod 2162 extends to and expects that mouth 214 top exports the position maintained an equal level mutually.
The builder of fixed connection on support 3 is disposed with drying plant 31, agglomerating plant 32 and nip roll machine 33 from top to bottom.Wherein the surface of drying plant 31 and agglomerating plant 32 is covered with heat-insulation layer 34, and nip roll machine 33 inside is provided with a pair horizontally-opposed roller set 330, and the top of roller set 330 is also provided with the dilatation mold 332 of gas operated.Drying plant 31 top shelf is provided with lower tumbler 310, adopts drying plant 31 temperature range of Electrothermal ring at 250 DEG C---and 450 DEG C.Agglomerating plant 32 interior separation is the sintering stage 320 of upper part and the constant temperature zone 321 of lower part, wherein sintering stage 320 be temperature range at 400 DEG C---the vertical tubular sintering furnace of 800 DEG C, constant temperature zone 321 be temperature range at 300 DEG C---the Electrothermal ring of 400 DEG C, nip roll machine 33 surface is installed with the adjustment rotating disk 331 for adjustment roll wheels 330 elasticity.
During work, in the middle of the running channel 2160 of the dusty material of heat-shrink tube 4 being inserted barrel 216, material lid 215 screws fastening with barrel 216, after regulating supply oil mass by electric cabinet 1, oil cylinder 23 promotes ejector beam 220 and upwards pushes, ejector beam 220 is by the compacting compression gradually of the dusty material in running channel 2160, dusty material pressurized is piled into the solid shape parison of heat-shrink tube 4, will promote solid shape parison to a certain degree extrude toward the outlet of core rod 2162 when the upper pushing force of ejector beam 220 increases to, the solid shape parison extruded forms half-finished heat-shrink tube 4.
Half-finished heat-shrink tube 4 draws to ion brush 219 through upper block 218 and carries out electrostatic removal, because half-finished heat-shrink tube 4 is very tender and lovely, particularly the transverse strength of tubing is extremely low, just practical intensity must be had by drying and sintering, therefore the half-finished heat-shrink tube 4 after electrostatic removal enters 250 DEG C respectively under the traction of lower tumbler 310---and drying plant 31 and the agglomerating plant 32 of 450 DEG C carry out drying and strengthening, sintering stage 320 temperature range wherein in agglomerating plant 32 is 400 DEG C---800 DEG C, strengthening heat-shrink tube 4 not easy fracture, the temperature range of constant temperature zone 321 is 300 DEG C---400 DEG C, because 327 DEG C is the molten point of heat-shrink tube, and 400 DEG C is its boiling point, therefore the temperature of constant temperature zone is controlled prevent from damaging wire rod pipe 4 within this scope, but conscientiously wire rod pipe 4 can be become the soft state being convenient to the sizing of next step air expander.
Heat-shrink tube 4 vertical transport of soft state is to nip roll machine 33, sub-fraction air imports in the middle of heat-shrink tube 4 by the dilatation mold 332 be located at above roller set 330, heat-shrink tube 4 clamps by the roller set 330 then under regulating rotating disk 331 to regulate, heat-shrink tube 4 constantly pulls downwards by roller set 4 in the process making circumferential running, the air promoted in drawing process in heat-shrink tube 4 is constantly upwards walked thus is carried out the sizing of air expander to it, the heat-shrink tube of finished product is become after cooling, settle at one go, very efficient and convenient.
Embodiment described herein is only to the present invention's explanation for example.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (7)
1. a heat-shrink tube process equipment, by electric cabinet, and the extrusion mechanism be connected with electric cabinet respectively and builder formed, it is characterized in that: extrusion mechanism is fixed on bearing, builder fixed connection is on support, and described extrusion mechanism is disposed with holder, guide rail, oil cylinder from top to bottom, and its middle guide is located on the periphery of oil cylinder, ejector beam bottom slip cap in guide rail is located in oil cylinder, and the top of ejector beam is docked with the barrel on holder, described builder is disposed with drying plant from top to bottom, agglomerating plant, nip roll machine, wherein the surface of drying plant and agglomerating plant is covered with heat-insulation layer, nip roll machine inside is provided with at least one pair of horizontally-opposed roller set, the side of roller set is also provided with dilatation mold, described holder is by fixing top board, fixed base plate and fixed side formed, fixing top board is separately installed with turning cylinder and material mouth, wherein turning cylinder lower end extends to fixed base plate and is sheathed in corresponding turning cylinder oil cylinder, the below of material mouth is installed with material lid, the mode that material lid and the barrel on fixed base plate are threaded connection is fastening, the upper end of material mouth is fixed with upper block and ion brush in side, fixed side places the horizontal fixed bar for regulating the holder degree of balance.
2. heat-shrink tube process equipment according to claim 1, it is characterized in that: described barrel inside offers and expects the conical running channel that mouth inside is conducted, the shaping dies that an inside is embedded with core rod is held above running channel, this core rod is copper wire line hollow structure, bottom and the running channel of core rod connect, and the top of core rod extends to and expects that mouth top exports the position maintained an equal level mutually.
3. heat-shrink tube process equipment according to claim 1, is characterized in that: described oil cylinder is the fluid pressure type telescopic oil cylinder that load force is not less than 8 tons, and oil cylinder is connected to oil storage cabin by petroleum pipeline, and this oil storage cabin is connected to electric cabinet.
4. heat-shrink tube process equipment according to claim 1, is characterized in that: described drying plant top shelf is provided with lower tumbler, and drying plant is Electrothermal ring or quartz heating layer, and the temperature range of drying plant is 250 DEG C---450 DEG C.
5. heat-shrink tube process equipment according to claim 1, it is characterized in that: described agglomerating plant interior separation is the sintering stage of upper part and the constant temperature zone of lower part, wherein sintering stage is vertical tubular sintering furnace or horizontal sinter box, and the temperature range of sintering stage is 400 DEG C---800 DEG C; Constant temperature zone is infrared hot plate or Electrothermal ring, and the temperature range of constant temperature zone is 300 DEG C---400 DEG C.
6. heat-shrink tube process equipment according to claim 1, is characterized in that: described nip roll machine surface is installed with the adjustment rotating disk for adjustment roll wheels elasticity.
7. heat-shrink tube process equipment according to claim 1, is characterized in that: described dilatation mold is gas operated dilatation mold, and this dilatation mold can be installed vertically on any place above or below roller set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410245708.3A CN104015325B (en) | 2014-06-04 | 2014-06-04 | A kind of heat-shrink tube process equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410245708.3A CN104015325B (en) | 2014-06-04 | 2014-06-04 | A kind of heat-shrink tube process equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104015325A CN104015325A (en) | 2014-09-03 |
| CN104015325B true CN104015325B (en) | 2016-04-20 |
Family
ID=51432472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410245708.3A Active CN104015325B (en) | 2014-06-04 | 2014-06-04 | A kind of heat-shrink tube process equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104015325B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104802393B (en) * | 2015-04-24 | 2016-12-07 | 哈尔滨工程大学 | A kind of thermoplastic tube machine automatically |
| CN108081567B (en) * | 2017-12-26 | 2022-05-24 | 深圳市沃尔核材股份有限公司 | Production method and production system of thermal shrinkage branch finger stall |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2282317A (en) * | 1940-12-31 | 1942-05-12 | Okonite Co | Method of and apparatus for the electrostatic curing of heat curable materials, while under pressure |
| CN201009414Y (en) * | 2007-03-25 | 2008-01-23 | 牟昌山 | Rough material dehumidifying drying device installed on plastics extruding machine |
| CN201755907U (en) * | 2010-07-12 | 2011-03-09 | 上海海鹰粘接科技有限公司 | Composite material extrusion molding equipment |
| CN202572950U (en) * | 2012-04-15 | 2012-12-05 | 朱红渭 | Oil heat constant-temperature extruder |
-
2014
- 2014-06-04 CN CN201410245708.3A patent/CN104015325B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2282317A (en) * | 1940-12-31 | 1942-05-12 | Okonite Co | Method of and apparatus for the electrostatic curing of heat curable materials, while under pressure |
| CN201009414Y (en) * | 2007-03-25 | 2008-01-23 | 牟昌山 | Rough material dehumidifying drying device installed on plastics extruding machine |
| CN201755907U (en) * | 2010-07-12 | 2011-03-09 | 上海海鹰粘接科技有限公司 | Composite material extrusion molding equipment |
| CN202572950U (en) * | 2012-04-15 | 2012-12-05 | 朱红渭 | Oil heat constant-temperature extruder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104015325A (en) | 2014-09-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205167594U (en) | Pyrocondensation pipe former | |
| CN202985870U (en) | High-efficiency rotating demoulding device | |
| CN104015325B (en) | A kind of heat-shrink tube process equipment | |
| CN102350453B (en) | Variable-radian forming equipment for double-framework type products and method thereof | |
| CN103611870B (en) | One forges mould | |
| CN204450844U (en) | A kind of pile tube automatic die assembly device | |
| CN206122653U (en) | Heavy -calibre centrifugation cast tube shedder | |
| CN206911970U (en) | Extra-high voltage steel tube tower straight-seam pipes welding deformation set round device | |
| CN116572562A (en) | Manufacturing process of continuously-wound glass fiber reinforced plastic pipeline | |
| CN203854198U (en) | Lining tube deformation device | |
| CN203713087U (en) | Device for producing multi-specification steel-belt-enhanced helical corrugated pipe on single production line | |
| CN205218430U (en) | Harmless jar system that contracts | |
| CN103722757A (en) | Method and device for producing steel strip reinforced spiral ripple pipes of multiple specifications by virtue of single production line | |
| CN208494692U (en) | A kind of band rotary-atomizing diesel system | |
| CN204209963U (en) | A kind of novel carat pipe hot briquetting automatic production line | |
| CN204526059U (en) | A kind of special-shaped wall Guan Cheng, socket mould and bell and spigot manufacturing equipment thereof | |
| CN203610943U (en) | Tool capable of fast disassembling work roller jaw of straightening machine | |
| CN202506668U (en) | Four-high mill | |
| CN207914343U (en) | A kind of automated production steel profile cold extrusion press | |
| CN207325685U (en) | A kind of hydraulic pressure corrugation forming machine | |
| CN204564857U (en) | The system of clod wash electric power four large pipeline | |
| CN203266070U (en) | Extruder charging barrel dismantling device | |
| CN2316059Y (en) | Special-purpose equipment for making taper tube | |
| CN203649171U (en) | High-frequency straight welded pipe forming machine mold rapid replacing device | |
| CN110560624A (en) | automatic forging production unit of steering rocker shaft |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |