CN111016023A - High-speed vulcanizing device for rubber hose - Google Patents
High-speed vulcanizing device for rubber hose Download PDFInfo
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- CN111016023A CN111016023A CN201911354505.7A CN201911354505A CN111016023A CN 111016023 A CN111016023 A CN 111016023A CN 201911354505 A CN201911354505 A CN 201911354505A CN 111016023 A CN111016023 A CN 111016023A
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- vulcanizing
- vulcanization
- cooling device
- temperature cooling
- temperature
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 34
- 239000005060 rubber Substances 0.000 title claims abstract description 34
- 238000004073 vulcanization Methods 0.000 claims abstract description 47
- 238000010438 heat treatment Methods 0.000 claims abstract description 39
- 238000001816 cooling Methods 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000004804 winding Methods 0.000 claims abstract description 12
- 230000009977 dual effect Effects 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000007306 turnover Effects 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
Images
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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
- B29C35/049—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using steam or damp
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
- B29C35/06—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam for articles of indefinite length
- B29C35/065—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam for articles of indefinite length in long tubular vessels
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/10—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation for articles of indefinite length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/005—Hoses, i.e. flexible
Landscapes
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Toxicology (AREA)
- Electromagnetism (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Abstract
The invention relates to a high-speed vulcanizing device for a rubber hose, which comprises a paying-off machine, a wire tightener, an extruder, vulcanizing equipment, a traction machine, a winding roller, a high-temperature cooling device and a low-temperature cooling device, wherein the paying-off machine is connected with the wire tightener; the high-temperature cooling device is a water seal and water vapor balance pipe; the paying-off machine is connected with an inlet of the extruder through a wire tightener, a machine head of the extruder is connected with vulcanizing equipment, the vulcanizing equipment is connected with a water seal and a water vapor balance pipe, the water seal and the water vapor balance pipe are connected with a low-temperature cooling device through a pipe outlet, an outlet of the low-temperature cooling device is connected to the winding roller through a traction machine, and the vulcanizing equipment is a vulcanizing pipeline in a dual mode of electromagnetic heating and steam pressurization and heating. The device is under the prerequisite of guaranteeing sufficient vulcanization effect, and the security is higher relatively, and has higher production efficiency.
Description
Technical Field
The invention belongs to the technical field of rubber product production, and particularly relates to a high-speed vulcanizing device for a rubber hose.
Technical Field
The prior patent ZL 201210134275.5A method and device for producing a steel wire braided tube discloses a rubber hose vulcanizing device. When the prior patent equipment is used, the positive vulcanization is realized because only steam, which is a single heat source, transfers heat to the rubber product. And because the vulcanization pipeline is longer, the temperature of the steam is reduced after the heat is transferred, so that the temperature of the steam in the pipeline is unbalanced. In actual production, in order to achieve positive vulcanization of the rubber hose, the vulcanization temperature is increased, and the steam pressure is required to be increased correspondingly because the steam pressure is in positive correlation with the vulcanization temperature, and the steam pressure is required to be increased correspondingly in order to achieve a higher vulcanization temperature. However, if the steam pressure in the apparatus is too high, the high pressure steam may leak, and safety is poor.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a high-speed vulcanizing device for a rubber hose, which has higher safety on the premise of ensuring the vulcanizing effect.
The technical scheme of the invention is as follows: a high-speed vulcanizing device for a rubber hose comprises a paying-off machine, a wire grip, an extruder, vulcanizing equipment, a traction machine, a winding roller, a high-temperature cooling device and a low-temperature cooling device; the high-temperature cooling device is a water seal and water vapor balance pipe; the paying-off machine is connected with an inlet of the extruder through a wire tightener, a machine head of the extruder is connected with vulcanizing equipment, the vulcanizing equipment is connected with a water seal and a water vapor balance pipe, the water seal and the water vapor balance pipe are connected with a low-temperature cooling device through a pipe outlet, an outlet of the low-temperature cooling device is connected to the winding roller through a traction machine, and the vulcanizing equipment is a vulcanizing pipeline in a dual mode of electromagnetic heating and steam pressurization and heating.
Further, the length of the vulcanizing pipeline is 50-200 m, and the catenary angle α of the vulcanizing pipeline is 10-30 degrees.
Further, the length of the vulcanizing pipeline is 50-150 m, and the catenary angle α of the vulcanizing pipeline is 10-20 degrees.
Further: the low-temperature cooling device is a temperature control type cooling tank with the temperature control range of 20-50 ℃.
Further: and closing the electromagnetic heating of the vulcanizing pipeline when the vulcanizing temperature is less than or equal to 230 ℃.
By adopting the technical scheme, the invention has the technical effect of providing the high-speed vulcanization device for the rubber hose. The device has the following four advantages:
1. safety improvement
Because the working pressure in the vulcanizing pipeline is much lower than that of single steam heating at the same temperature, the safety is greatly improved.
2. Is more environment-friendly
And (3) indirectly reducing pollution: compared with a single steam pressurizing and heating mode, the dual modes of electromagnetic heating, steam pressurizing and heating have low energy consumption, and the power resource is saved.
The pollution is directly reduced: 1) this patent production process is assembly line continuity of operation (as shown in figure 1), will fill the turnover dish (waiting to vulcanize the product in the turnover dish) of waiting to vulcanize the product, when will using up, change the turnover dish of filling with vulcanize the product and continue production, need not the stop line, production of cycle, install in paying out machine 1 department, the product of waiting to vulcanize loops through following equipment, accomplish the vulcanization to winding up roller 9 department, the product vulcanization is gone on in the pipeline that is airtight relatively, the consumption of the steam energy has been reduced.
2) This scheme compares with traditional vulcanizer vulcanization technology, has reduced the emission that contains sulfur dioxide steam by a wide margin, because traditional vulcanizer vulcanization technology, after the product vulcanization is accomplished, need with the whole evacuation back of steam in the jar, open the jar door, take out the product that the vulcanization was accomplished, put into the vulcanizer with the product that does not vulcanize again, close the jar door, annotate steam again, vulcanize the product that does not vulcanize, production of going round and round.
3. Product quality improvement
When the vulcanizing pipeline of the device reaches the required vulcanizing temperature, the steam temperature in the vulcanizing pipeline is balanced, the relatively high and stable vulcanizing temperature can be reached without increasing over high pressure, and the consistency of the vulcanizing state is ensured by the stable vulcanizing temperature, so that the product quality is improved.
4. The production efficiency is improved
Because steam is higher than dry air in heat conductivity, the heat of the steam vulcanization pipeline after being heated can be more quickly conducted into the product to be vulcanized, and the production efficiency can be greatly improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a vulcanization pipe of the present invention;
wherein: the production process comprises the following steps of 1-a paying-off machine, 2-a wire tightener, 3-an extruder, 4-a vulcanization pipeline, 5-a water seal and water vapor balance pipe, 6-a pipe outlet, 7-a cryogenic cooling device, 8-a tractor, 9-a winding roller, 10-a steam vulcanization pipeline, 11-heat insulation cotton and 12-an electromagnetic heating coil.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
The invention can be applied to the vulcanization of various non-special-shaped rubber hoses, such as: the rubber hose comprises a brake hose, an air conditioner hose, an engineering mechanical pipe and other linear vulcanized hoses, and a composite rubber hose with a framework layer (the framework layer is divided into two types: metal or fiber), a rubber layer, a nylon layer, a plastic layer and a metal layer.
The vulcanizing device of the rubber hose comprises a paying-off machine 1, a wire grip 2, an extruder 3, a vulcanizing pipeline 4, a water sealing and water vapor balancing pipe 5, a pipe outlet 6, a low-temperature cooling device 7, a traction machine 8 and a winding roller 9, wherein the wire grip is arranged on the paying-off machine 1. The paying-off machine 1 is provided with a support for placing an unvulcanized composite rubber hose (raw material), and the winding roller 9 is used for winding a rubber hose product. The paying-off machine 1 is connected with an inlet of an extruding machine 3 through a wire tightener 2, a machine head of the extruding machine 3 is connected with a vulcanizing pipeline 4, the vulcanizing pipeline 4 is connected with a water sealing and water vapor balancing pipe 5, the water sealing and water vapor balancing pipe 5 is connected with a low-temperature cooling device 7 through a pipe outlet 6, and an outlet of the low-temperature cooling device 7 is connected to a traction machine 8 and is connected to a winding roller 9 through the traction machine 8. In order to facilitate temperature adjustment, the low-temperature cooling device 7 specifically adopts a temperature control type cooling tank, and the cooling medium can be water.
The vulcanizing pipeline 4 is a vulcanizing pipeline 4 with dual modes of electromagnetic heating and steam pressurization and heating, the length of the vulcanizing pipeline 4 is 50-200 m, preferably 50-150 m, and specifically 60m in the embodiment, the catenary angle α of the vulcanizing pipeline is 10-30 degrees, preferably 10-20 degrees, and specifically 17 degrees in the embodiment, the specific structure of the vulcanizing pipeline 4 is shown in fig. 2, the vulcanizing pipeline 10 is a pipeline main body, the outer layer of the vulcanizing pipeline 10 is coated with heat insulation cotton 11, the heat insulation cotton 11 is externally wound with an electromagnetic heating coil 12, the vulcanizing pipeline 10 is fully filled with sulfur dioxide during operation, after the electromagnetic heating coil 12 is electrified, the metallic vulcanizing pipeline 10 can be subjected to electromagnetic induction heating, the heated vulcanizing pipeline 10 can input heat to steam in the pipeline, so that the steam temperature in the pipeline is balanced, a high and stable vulcanizing temperature can be achieved without increasing excessive pressure, the stable vulcanizing temperature ensures the consistency of the vulcanizing state, the quality of the product is improved, the working pressure of the equipment is reduced, the safety of the improvement of the steam heating, the heating efficiency of the double modes of the steam pressurization and the heating of the steam pressurization, the heating of the steam vulcanizing pipeline 4, and the electromagnetic heating of the steam vulcanizing pipeline to be realized by the electromagnetic heating mode of the electromagnetic heating technology of the electromagnetic heating, and the electromagnetic heating method for realizing the steam heating of the electromagnetic heating, which are the steam vulcanizing pipeline 4.
The vulcanization process of the rubber hose comprises the following steps: placing an unvulcanized composite rubber hose on a support of a paying-off machine 1, paying off the unvulcanized composite rubber hose by the paying-off machine 1, extruding an outer rubber layer by entering an extruder 3 through a wire grip 2, and vulcanizing the rubber hose coated with the outer rubber layer through a vulcanizing pipeline 4 at a uniform speed under the traction action of a tractor 8.
The vulcanization speed is the speed of the rubber hose passing through the sealed vulcanization pipeline 4 after the outer rubber layer is extruded, the vulcanization speed is 2-100 m/min, the preferable vulcanization speed is 5-70 m/min, and the vulcanization speed is 20m/min in the embodiment.
The vulcanization temperature is the temperature for vulcanization reaction of the rubber hose after the outer rubber layer is extruded from the inside of the vulcanization pipe 4, the vulcanization temperature is 100-270 ℃, and in the temperature range, the vulcanization pipe 4 in the dual modes of electromagnetic heating, steam pressurization and heating can start the electromagnetic heating function, but the preferred scheme is as follows: when the vulcanization temperature required by the vulcanized product process is less than or equal to 230 ℃, the vulcanization pipeline is not required to be heated by an electromagnetic heating device (namely, electromagnetic heating is closed), and the vulcanized product is vulcanized by only using a steam pressurizing and heating mode; on the contrary, when the vulcanization temperature required by the product to be vulcanized is more than 230 ℃, the product to be vulcanized needs to be vulcanized by using a dual working mode of electromagnetic heating, steam pressurization and heating; the control precision of the vulcanization temperature is +/-0.5 ℃. The electromagnetic heating is selected to be started above 230 ℃, because the corresponding energy consumption is increased after the electromagnetic heating is started, the economical efficiency is reduced; when the vulcanization temperature is less than or equal to 230 ℃, the pressure corresponding to the steam is not too high relatively, so that the safety is relatively good, and after the balance between the economy and the safety is considered, the opening temperature of 230 ℃ is summarized as a preferred value.
The vulcanization pressure is the pressure inside the vulcanization pipeline, and the vulcanization pressure is 0.1-2.8 MPa. The vulcanizing medium in the vulcanizing process is as follows: steam with the temperature of 100-270 ℃ and the pressure of 0.1-2.8 MPa. The control precision of the vulcanization pressure is +/-0.1 MPa.
The core rod is made of steel wire, polyester, aramid fiber, nylon or rubber. The control precision of the outer diameter size of the core rod is +/-0.3 mm.
The vulcanized rubber hose is cooled at high temperature through the water seal and the water vapor balance pipe 5, and then cooled at low temperature through the low-temperature cooling device 7. The high-temperature cooling temperature is 50-100 ℃, and the temperature is 70 ℃ in the embodiment; the temperature of the low-temperature cooling is 20-50 ℃, preferably 30-40 ℃, and the temperature is 35 ℃ in the embodiment. The cooled rubber hose is drawn out by a tractor 8 and then is made into the rubber hose through the processes of drying, printing, depoling, rolling and packaging.
Claims (5)
1. A high-speed vulcanizing device for a rubber hose comprises a paying-off machine (1), a wire tightener (2), an extruder (3), vulcanizing equipment, a traction machine (8), a winding roller (9), a high-temperature cooling device and a low-temperature cooling device (7); the high-temperature cooling device is a water seal and water vapor balance pipe (5); pay off machine (1) is connected through the entry of turn-buckle (2) with extruder (3), and the aircraft nose and the curing equipment of extruder (3) are connected, and curing equipment is connected with water-stop and water vapour balance pipe (5), and water-stop and water vapour balance pipe (5) are connected with low temperature cooling device (7) through tub export (6), and the export of low temperature cooling device (7) is connected to winding up roller (9) through tractor (8), its characterized in that: the vulcanizing equipment is a vulcanizing pipeline (4) with dual modes of electromagnetic heating, steam pressurization and heating.
2. The high-speed vulcanization device of claim 1, characterized in that the length of the vulcanization pipe (4) is 50-200 m, and the catenary angle α of the vulcanization pipe (4) is 10-30 °.
3. The high-speed vulcanization device of claim 2, characterized in that the length of the vulcanization pipe (4) is 50-150 m, and the catenary angle α of the vulcanization pipe (4) is 10-20 °.
4. A rubber hose high-speed vulcanization device according to any one of claims 1 to 3, characterized in that: the low-temperature cooling device (7) is a temperature control type cooling tank with the temperature control range of 20-50 ℃.
5. A rubber hose high-speed vulcanization device according to any one of claims 1 to 3, characterized in that: and the electromagnetic heating of the vulcanizing pipeline (4) is closed when the vulcanizing temperature is less than or equal to 230 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911354505.7A CN111016023A (en) | 2019-12-25 | 2019-12-25 | High-speed vulcanizing device for rubber hose |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911354505.7A CN111016023A (en) | 2019-12-25 | 2019-12-25 | High-speed vulcanizing device for rubber hose |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111016023A true CN111016023A (en) | 2020-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911354505.7A Pending CN111016023A (en) | 2019-12-25 | 2019-12-25 | High-speed vulcanizing device for rubber hose |
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| CN (1) | CN111016023A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201266518Y (en) * | 2008-10-06 | 2009-07-01 | 王洪林 | Production line for rubber sleeve cable |
| JP2011005852A (en) * | 2009-05-29 | 2011-01-13 | Hitachi Cable Ltd | Vulcanizing method and vulcanizer |
| CN102642262A (en) * | 2012-05-03 | 2012-08-22 | 河北建强科技有限公司 | Method and device for manufacturing steel wire weaving tube |
| CN204229936U (en) * | 2014-11-03 | 2015-03-25 | 张伟 | Adopt the Plastic-sheathed Cable automatic manufacturing device of electromagnetism sulfuration |
| CN204471691U (en) * | 2015-02-16 | 2015-07-15 | 河间市卫华电工设备厂 | A kind of steam vulcanizing pipeline without boiler |
| CN204585657U (en) * | 2014-12-31 | 2015-08-26 | 广东凯华电器实业有限公司 | A kind of attemperating unit of sulfuration pipeline |
| CN206774330U (en) * | 2017-05-26 | 2017-12-19 | 赵建勇 | A kind of cross-linking vulcanized environmental protecting device of rubber cable |
| CN206796600U (en) * | 2017-04-23 | 2017-12-26 | 河南若德橡胶科技有限公司 | The Integral producing apparatus of braided steel wire rubber tube |
-
2019
- 2019-12-25 CN CN201911354505.7A patent/CN111016023A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201266518Y (en) * | 2008-10-06 | 2009-07-01 | 王洪林 | Production line for rubber sleeve cable |
| JP2011005852A (en) * | 2009-05-29 | 2011-01-13 | Hitachi Cable Ltd | Vulcanizing method and vulcanizer |
| CN102642262A (en) * | 2012-05-03 | 2012-08-22 | 河北建强科技有限公司 | Method and device for manufacturing steel wire weaving tube |
| CN204229936U (en) * | 2014-11-03 | 2015-03-25 | 张伟 | Adopt the Plastic-sheathed Cable automatic manufacturing device of electromagnetism sulfuration |
| CN204585657U (en) * | 2014-12-31 | 2015-08-26 | 广东凯华电器实业有限公司 | A kind of attemperating unit of sulfuration pipeline |
| CN204471691U (en) * | 2015-02-16 | 2015-07-15 | 河间市卫华电工设备厂 | A kind of steam vulcanizing pipeline without boiler |
| CN206796600U (en) * | 2017-04-23 | 2017-12-26 | 河南若德橡胶科技有限公司 | The Integral producing apparatus of braided steel wire rubber tube |
| CN206774330U (en) * | 2017-05-26 | 2017-12-19 | 赵建勇 | A kind of cross-linking vulcanized environmental protecting device of rubber cable |
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