CN110561633A - rubber cable material open milling processing technology - Google Patents
rubber cable material open milling processing technology Download PDFInfo
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- CN110561633A CN110561633A CN201910875787.9A CN201910875787A CN110561633A CN 110561633 A CN110561633 A CN 110561633A CN 201910875787 A CN201910875787 A CN 201910875787A CN 110561633 A CN110561633 A CN 110561633A
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- rubber
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- open mill
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
- B29B7/007—Methods for continuous mixing
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- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
the invention discloses a rubber cable material open milling processing technology, which comprises the following steps: (1) preparing rubber raw materials and compounding agents according to the weight part ratio; (2) adding a proper amount of rubber raw materials into an open mill, softening the rubber raw materials, wrapping a roller, and keeping a proper amount of accumulated rubber at the upper end of a roller gap; (3) after the roller is wrapped, adding the compounding agents into the open mill in sequence for mixing; (4) and plasticizing and granulating the mixed rubber material to obtain the finished cable material. The process is improved on the basis of preparing the rubber cable material by the traditional open mill, so that the rubber cable material can meet the requirement of high quality while keeping high-efficiency production efficiency in the preparation process, and meanwhile, the whole process is simple and easy to understand and is suitable for large-scale processing and use in factories.
Description
Technical Field
the invention belongs to the technical field of rubber processing, and particularly relates to a rubber cable material open milling processing technology.
Background
The cable material is a general name of plastics for wire and cable insulation and sheath, and is prepared by taking materials such as rubber, plastics, nylon and the like as base materials and combining auxiliary components such as a plasticizer, a filler, a color master batch, an antioxidant and the like. The rubber cable material occupies a considerable proportion, and although the rubber cable material has a huge production capacity in China, the manufactured product has low grade, poor product quality uniformity and stability, low production efficiency and high energy consumption. The main reason is that the advanced core technology of rubber processing is not completely mastered, and the research on the rubber processing theory and method is relatively lagged, so that the problems of the rubber cable material in the processing process are various.
In the prior art, a basic process of a rubber cable material comprises the following steps of firstly, mixing various raw materials together through an internal mixer or an open mill, simultaneously turning and shearing the raw materials to improve the dispersibility of the rubber material, obtaining the proper thickness and width of the rubber material by controlling the gap of a wheel cylinder and the width of a cutting knife, finally, putting the rubber material into a drying device, drying and cooling the rubber material, and plasticizing the rubber material to obtain a finished product. At present, systematic research is lacked, and generally, the operation of rubber materials in an open mill is realized by operation experience and an incomplete operation manual through manual control, so that parameters such as processing time, temperature and the like of the rubber materials are changed along with the change of personal experience in the operation processes of different operators and different stages, the rubber material plasticity is extremely low or too high, the phenomena of uneven dispersion of compounding agents, scorching, frost spraying and the like are easily caused, the subsequent processes such as pressure extension, extrusion, vulcanization and the like cannot be normally carried out, and the physical or mechanical properties of products are unstable or reduced, so that the production quality cannot be ensured.
Therefore, the production quality of rubber cable material products is further improved by standardizing, optimizing and accurately controlling the open milling processing technology of the cable material, which is a problem to be solved by technical personnel in the field at present.
Disclosure of Invention
The invention aims to make up for the defects of the prior art and provides a rubber cable material open-milling processing technology.
in order to achieve the above object, the present invention provides the following technical solutions:
A rubber cable material open milling processing technology comprises the following steps:
(1) Preparing rubber raw materials and compounding agents according to the weight part ratio;
(2) Adding a proper amount of rubber raw materials into an open mill, softening the rubber raw materials, wrapping a roller, and keeping a proper amount of accumulated rubber at the upper end of a roller gap;
(3) After the roller is wrapped, adding the compounding agents into the open mill in sequence for mixing;
(4) And plasticizing and granulating the mixed rubber material to obtain the finished cable material.
Furthermore, the roller of the open mill in the step 2 is of a hollow structure, and cooling circulating water can be introduced into the roller for heat conduction.
Furthermore, in the step 2, the rotating speed of a front roller of the open mill is 16-18 revolutions per minute, and the rotating speed of a rear roller of the open mill is 21-23 revolutions per minute.
Further, in the step 2, the roll distance between two rollers of the open mill is controlled to be 4-7mm, and the height of the accumulated glue is controlled to be equal to the range of the contact angle.
Further, when the rubber mixing amount is small in the step 2, arranging rubber blocking plates on the rubber conveying plates for blocking, wherein the distance between the rubber blocking plates is controlled to be 20-30cm, so that the accumulated rubber amount above the roller distance can reach the range of the contact angle.
further, the roller is preheated before mixing in the step 3, and mixing is started after the temperature of the stacking adhesive reaches 75-85 ℃ through roller heat conduction.
Further, the temperature of the roller distance is controlled not to exceed 105 ℃ and the temperature of the rubber material at the outlet of the roller distance is controlled not to exceed 85 ℃ in the mixing process in the step 3.
Further, the mixing time in the step 3 is controlled to be 20-40 minutes.
The invention has the advantages that:
according to the invention, the process is improved on the basis of preparing the rubber cable material by using a traditional open mill, the rotating speed of the roller is increased firstly, the shearing action between the rubber material and the roller can be increased by higher rotating speed, and the dispersion of the compounding agent is accelerated, so that the mixing time is shortened and the production efficiency is improved; secondly, the control of the roller spacing and the amount of the deposited glue above the roller spacing is optimized, and through the range standard of the contact angle and the use of a glue baffle plate, the proper amount of the deposited glue is ensured to be brought into a wrinkle ditch of the deposited glue by overturning and replacing the raw material compounding agent, and then the deposited glue enters the roller gap to realize the effect of uniform dispersion; thirdly, through the hollow design of the interior of the roller and the introduction of circulating cooling water for heat conduction, the roller can be ensured to accelerate the rotating speed of the roller and take away heat generated by friction, the rubber material is ensured to still have ideal heating speed under the condition of fast shearing, scorching is prevented, and the quality of the rubber material is ensured; and fourthly, the temperature of the glue accumulated above the roller distance and the temperature of the glue material at the outlet of the roller distance are accurately controlled in the mixing process, so that the rubber glue material is prevented from passing through the roller distance back and forth in the mixing process to cause scorching. According to the invention, through the optimization modes, the rubber cable material can meet the requirement of high quality while maintaining high-efficiency production efficiency in the preparation process, and meanwhile, the whole process is simple and understandable, so that the rubber cable material is suitable for large-scale processing in factories.
Detailed Description
The technical scheme of the invention is further explained by combining the specific examples as follows:
Example 1
a rubber cable material open milling processing technology comprises the following steps:
(1) preparing rubber raw materials and compounding agents according to the weight part ratio;
(2) adding a proper amount of rubber raw materials into an open mill, softening the rubber raw materials, wrapping rollers, and keeping a proper amount of accumulated rubber at the upper end of a roller gap, wherein a roller of the open mill is of a hollow structure, cooling circulating water can be introduced into the roller for heat conduction, the rotating speed of a front roller of the open mill is 16 revolutions per minute, the rotating speed of a rear roller of the open mill is 21 revolutions per minute, the roller distance between the two rollers is controlled to be 4mm, the accumulated rubber amount is controlled to be within a range of a contact angle, when the rubber mixing amount is less, a rubber blocking plate is arranged on a rubber conveying plate for blocking, and the distance between the rubber blocking plates is controlled to be 20cm so as to ensure that the amount of the accumulated rubber above the roller distance reaches the range;
(3) preheating a roller, enabling the temperature of the stacking rubber to reach 75 ℃ through roller heat conduction, wrapping the roller, sequentially adding a compounding agent into an open mill for mixing, controlling the temperature at the roller distance not to exceed 105 ℃ and the temperature of the rubber material at the outlet of the roller distance not to exceed 85 ℃ in the mixing process, and controlling the mixing time to be 20 minutes;
(4) and plasticizing and granulating the mixed rubber material to obtain the finished cable material.
Example 2
(1) Preparing rubber raw materials and compounding agents according to the weight part ratio;
(2) adding a proper amount of rubber raw materials into an open mill, softening the rubber raw materials, wrapping a roller, and keeping a proper amount of accumulated rubber at the upper end of a roller gap, wherein a roller of the open mill is of a hollow structure, cooling circulating water can be introduced into the roller for heat conduction, the rotating speed of a front roller of the open mill is 18 revolutions per minute, the rotating speed of a rear roller of the open mill is 23 revolutions per minute, the roller distance between the two rollers is controlled to be 7mm, the accumulated rubber amount is controlled to be within a range of a contact angle, when the rubber mixing amount is less, a rubber blocking plate is arranged on a rubber conveying plate for blocking, the distance between the rubber blocking plates is controlled to be 30cm, and the amount of the accumulated rubber above the roller distance is ensured to reach the range;
(3) Preheating a roller, enabling the temperature of the stacking rubber to reach 85 ℃ through roller heat conduction, wrapping the roller, sequentially adding a compounding agent into an open mill for mixing, controlling the temperature at the roller distance not to exceed 105 ℃ and the temperature of the rubber material at the outlet of the roller distance not to exceed 85 ℃ in the mixing process, and controlling the mixing time to be 40 minutes;
(4) And plasticizing and granulating the mixed rubber material to obtain the finished cable material.
example 3
(1) Preparing rubber raw materials and compounding agents according to the weight part ratio;
(2) Adding a proper amount of rubber raw materials into an open mill, softening the rubber raw materials, wrapping rollers, and keeping a proper amount of accumulated rubber at the upper end of a roller gap, wherein a roller of the open mill is of a hollow structure, cooling circulating water can be introduced into the roller for heat conduction, the rotating speed of a front roller of the open mill is 17 r/min, the rotating speed of a rear roller of the open mill is 22 r/min, the roller distance between the two rollers is controlled to be 5mm, the accumulated rubber amount is controlled to be within a range of a contact angle, when the rubber mixing amount is less, a rubber blocking plate is arranged on a rubber conveying plate for blocking, the distance between the rubber blocking plates is controlled to be 25cm, and the amount of the accumulated rubber above the roller distance is ensured to reach the range of;
(3) preheating a roller, enabling the temperature of the stacking rubber to reach 80 ℃ through roller heat conduction, wrapping the roller, sequentially adding a compounding agent into an open mill for mixing, controlling the temperature at the roller distance not to exceed 105 ℃ in the mixing process, controlling the temperature of the rubber material at the outlet of the roller distance not to exceed 85 ℃, and controlling the mixing time to be 30 minutes;
(4) And plasticizing and granulating the mixed rubber material to obtain the finished cable material.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. the rubber cable material open milling processing technology is characterized by comprising the following steps:
(1) preparing rubber raw materials and compounding agents according to the weight part ratio;
(2) adding a proper amount of rubber raw materials into an open mill, softening the rubber raw materials, wrapping a roller, and keeping a proper amount of accumulated rubber at the upper end of a roller gap;
(3) After the roller is wrapped, adding the compounding agents into the open mill in sequence for mixing;
(4) And plasticizing and granulating the mixed rubber material to obtain the finished cable material.
2. The open mill processing technology of rubber cable materials as claimed in claim 1, wherein the roller of the open mill in the step 2 is of a hollow structure, and cooling circulating water can be introduced into the roller for heat conduction.
3. the open mill processing technology of the rubber cable material as claimed in claim 1, wherein the rotation speed of the front roller of the open mill in the step 2 is 16-18 rpm, and the rotation speed of the rear roller of the open mill in the step 2 is 21-23 rpm.
4. the open mill processing technology of rubber cable materials according to claim 1, characterized in that in the step 2, the roll gap between two rolls of the open mill is controlled to be 4-7mm, and the accumulated rubber amount is controlled to be equal to the contact angle range.
5. The rubber cable material open mill processing technology of claim 1, characterized in that in the step 2, when the amount of rubber mixing is small, a rubber baffle plate is arranged on the rubber conveying plate for blocking, and the distance between the rubber baffle plates is controlled to be 20-30cm, so as to ensure that the amount of the deposited rubber above the roller distance reaches the contact angle range.
6. The open mill processing technology of rubber cable materials according to claim 1, wherein the roller is preheated before mixing in step 3, and mixing is started after the temperature of the stacking rubber reaches 75-85 ℃ through roller heat conduction.
7. The open mill processing technology of rubber cable materials according to claim 1, characterized in that the temperature at the roller nip is controlled not to exceed 105 ℃ and the temperature of the rubber materials at the outlet of the roller nip is controlled not to exceed 85 ℃ during the mixing process in the step 3.
8. The open mill processing technology of rubber cable materials according to claim 1, wherein the mixing time in the step 3 is controlled to be 20-40 minutes.
Priority Applications (1)
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| CN201910875787.9A CN110561633A (en) | 2019-09-17 | 2019-09-17 | rubber cable material open milling processing technology |
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| CN201910875787.9A CN110561633A (en) | 2019-09-17 | 2019-09-17 | rubber cable material open milling processing technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113325902A (en) * | 2021-05-08 | 2021-08-31 | 东风柳州汽车有限公司 | Method, device and equipment for intelligently adjusting glue yield and storage medium |
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Application publication date: 20191213 |
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