CN106514168B - A kind of processing method of belt conveyor driving drum - Google Patents

Abstract

The invention discloses a processing method for a drive roller of a belt conveyor, which belongs to the field of conveyors. The present invention comprises the following steps: A, the production of the tube skin: the tube skin raw material is sequentially processed into the tube skin through blanking, arc pressing, rolling, welding, and rounding processes; B, the production of the central shaft: the shaft raw material is sequentially processed Cutting, rough turning, quenching and tempering treatment, and finishing turning process are processed as the central axis; C, turning of the web; D, assembly: the processed tube skin, web and central shaft are assembled into one to form a drum; E 1. Cover the rubber layer on the surface of the drum; F. Turn the rubber layer on the surface of the drum to process the surface pattern. The invention helps to improve the service performance of the transmission roller, avoids the abnormal damage of the roller during use, and ensures the efficient operation of the conveying system.

Description

A kind of processing method of driving roller of belt conveyor

technical field

The invention relates to the technical field of conveyors, and more specifically, relates to a processing method of a belt conveyor driving roller.

Background technique

Belt conveyor is a kind of machinery that is driven by friction to transport materials in a continuous manner. It is mainly composed of frame, conveyor belt, idler roller, roller, tensioning device, transmission device, etc. It can form a material conveying process from the initial feeding point to the final unloading point on a certain conveying line. It can not only transport broken materials, but also transport finished items. In addition to pure material transportation, it can also cooperate with the requirements of the technological process in the production process of various industrial enterprises to form a rhythmic assembly line, so it is widely used in production practice.

The transmission of the belt conveyor is mainly realized by the flexible friction between the drive roller and the belt. The drum is composed of drum skin, web, central shaft, etc. When in use, the power transmission is transmitted from the drum to the web, and the web is transferred to the bearing seat through bolts. In order to improve the mechanical properties of the transmission drum, it is usually coated with a A wear-resistant rubber layer is used to increase the friction between the drive roller and the belt, thereby reducing belt slippage, reducing belt deviation and wear, and improving operating efficiency. In the process of production and use, the transmission roller is subjected to long-term friction and centripetal force, which causes the transmission roller to be easily damaged, and in the process of transportation, the impact force of some hard objects on the roller will also damage the roller and affect the service life of the roller , Once the drive roller is abnormally damaged, it will cause the conveyor system to stop, seriously affecting the production schedule. Improving the performance of the drive roller and ensuring the high-efficiency and large-capacity operation of the conveyor are of great significance to production practice.

Regarding the technical improvement of the transmission roller, a large number of patent documents have been published in the prior art, such as the Chinese patent application number: 2011101713905, the application date: June 24, 2011, the invention name is: roller for conveyor, the application Disclosed is a roller for a conveyor, comprising a roller shaft, the roller is mounted on the roller shaft by means of a bearing seat and bearings, the outer wall of the bearing seat has a stepped structure, the port of the roller and its inner wall are fitted with the steps, the bearing seat The inner end surface of the bearing is against the shoulder of the roller shaft; the inner wall surface of the bearing seat is fitted with the outer ring of the bearing, the roller shaft is installed on the inner ring of the bearing seat, and one end of the inner ring of the bearing protrudes outward from the outer ring of the bearing. This application can prevent the damage to the roller caused by conveying heavy objects such as ores, and can effectively prolong the service life of the roller and the bearing.

Another example is the Chinese patent application number: 2015107144709, application date: October 29, 2015, and the name of the invention is: a belt conveyor roller. The application discloses a belt conveyor roller, including a transmission roller, a transmission The drum is composed of a cylinder, a drum shaft, a drum flange and connecting bolts; the material of the drum is high-strength alloy steel, and the tail of the drum is connected with the flange hole of the drum; the middle part of the drum shaft has a connecting flange, and the connecting flange The bosses of the rollers are matched with the connecting grooves of the drum flange. In this application, the connecting shaft head of the drum shaft not only ensures the connection strength, but also plays a positioning role, avoiding the loose quality defect inside the bar, and helping to prolong the service life of the drum.

The above applications all start from the structure of the drive drum itself, and extend the service life of the drum by improving the structural design of the drive drum. They do not involve the optimization of the processing technology of the drive drum, and provide a processing method that can effectively improve the performance of the drum. It still has guiding significance for the development of the industry.

Contents of the invention

1. The technical problem to be solved by the invention

The purpose of the present invention is to overcome the disadvantages in the prior art that the transmission roller of the conveyor is easy to be damaged, which leads to the abnormality of the conveying system and affects the production efficiency, and provides a processing method for the transmission roller of the belt conveyor, which can effectively improve the performance of the transmission roller , to avoid abnormal damage to the roller during use, and ensure the efficient operation of the conveying system.

2. Technical solution

In order to achieve the above object, the technical scheme provided by the invention is:

A kind of processing method of belt conveyor driving drum of the present invention comprises the following steps:

A. Production of tube skin: The raw material of tube skin is processed into tube skin through blanking, arc pressing, rolling, welding and rounding in sequence;

B. Production of the central shaft: the raw material of the shaft is sequentially processed into a central shaft through blanking, rough turning, quenching and tempering treatment, and fine turning;

C. Turning of the web;

D. Assembly: Assemble the processed tube skin, web and central shaft into one to form a drum;

E. Cover the rubber layer on the surface of the drum;

F. Turning the rubber layer on the surface of the drum to process the surface pattern.

As a further improvement of the present invention, an annealing treatment is required after the tube skin is welded in step A. The specific process is as follows: put the tube skin into an annealing furnace, the temperature rise rate in the annealing furnace does not exceed 150°C/h, and the temperature in the furnace is heated to 600- After holding at 650°C for 2 to 2.5 hours, cool to 150 to 160°C with the furnace after the end of holding, and then air cool to room temperature.

As a further improvement of the present invention, the specific process of step E is as follows:

Step 1. Pretreatment of the surface of the drum to remove surface dirt;

Step 2. Apply primer evenly on the surface of the roller;

Step 3: Glue the rubber sheet on the surface of the roller;

After the primer is air-dried, cover and bond the rubber plate with a thickness of X to the outside of the drum along the circumferential direction and compact it;

Step 4, vulcanization treatment of the drum;

Step 5, turning the surface of the drum;

Carry out turning treatment to the rubber plate on the surface of the vulcanized roller, the turning thickness of the rubber plate is (1/5～1/3)X.

As a further improvement of the present invention, the specific process of step 1 is as follows: perform mechanical grinding or sandblasting on the surface of the roller, and use a cleaning agent to remove surface dirt. After the roller is air-dried, evenly paint a layer of metal primer on the surface of the roller.

As a further improvement of the present invention, the specific process of step 2 is as follows: brush evenly the first layer of primer on the surface of the roller along the same direction, and after the first layer of primer is air-dried, evenly brush the second layer of primer along the same direction.

As a further improvement of the present invention, the thickness of the first layer of primer is 0.05-0.06 mm, and the thickness of the second layer of primer is 0.03-0.05 mm.

As a further improvement of the present invention, the specific process of step three is as follows: the rubber plate is rolled and compacted along the circumferential direction of the cylinder with the compacting roller, and the air bubbles between the rubber plate and the cylinder are extruded, and the compacting cylinder is formed during extrusion. The center of the rubber sheet is squeezed to the sides.

As a further improvement of the present invention, the specific process of step 4 is as follows: After the rubber sheet is compacted, a layer of insulating film is coated on the outer periphery of the rubber sheet, and it is bound with steel wires, and then the roller is put into a vulcanization steam furnace for vulcanization treatment. The temperature is 180 ~ 200 ℃.

As a further improvement of the present invention, the insulating film is canvas or PET film.

As a further improvement of the present invention, the specific process of step five is as follows: send the roller into the lathe and turn the surface rubber plate along the circumferential direction. The turning thickness is (1/5～1/3)X, and the remaining rubber is observed after turning. Check whether there are air bubbles on the surface of the board. When the air bubbles are found, puncture the air bubbles, inject glue separately into the gaps at the air bubbles, and compact the rubber plate here.

3. Beneficial effect

Compared with the prior art, the technical solution provided by the invention has the following remarkable effects:

(1) The processing method of a kind of belt conveyor driving drum of the present invention, after the tube skin is welded, annealing treatment is required, the tube skin is put into an annealing furnace, the heating rate in the furnace is not more than 150°C/h, and the temperature in the furnace is heated to Keep warm at 600°C for 2 hours. After the heat preservation is over, cool it with the furnace to 150°C, and then air cool it to room temperature, which can fully eliminate the welding stress of the shell and ensure the mechanical properties of the shell, so as to ensure the comprehensive mechanical properties of the drum and prevent the drum from being in use. Abnormal damage occurs to ensure the efficient operation of the conveying system.

(2) According to the processing method of a belt conveyor drive roller of the present invention, after removing the dirt on the surface of the roller, please clean it, dry the roller quickly, and then quickly apply a layer of metal primer evenly on the surface of the roller, which can effectively avoid The re-contamination of the surface of the roller prolongs the storage period of the roller after pretreatment, and is conducive to the wetting of the roller surface by the subsequent adhesive, improving its bonding strength and durability, and helping to improve the performance of the roller and prolong its service life.

(3) the processing method of a kind of belt conveyor driving drum of the present invention, after the metal primer on the drum surface is air-dried, brush the first layer of primer evenly along the same direction on the drum surface, after the first layer of primer is air-dried, Brush the second layer of primer evenly in the same direction. When brushing the primer, do it all in the same direction, so as to avoid air bubbles or pores on the surface caused by the surface of the primer absorbing or enveloping air. The brushing speed is uniform and stable, which helps The air is discharged to prevent residual air bubbles, improve the bonding strength between the subsequent surface rubber sheet and the roller, avoid degumming of the roller, and improve the performance of the roller.

(4) The processing method of a kind of belt conveyor drive roller of the present invention adopts the brushing method that the first layer of primer is slightly thicker and the second layer of primer is slightly thinner, and the first layer of primer can be fully coated on the metal bottom The outer layer of the paint, the metal primer is used as a transition layer between the roller and the primer, so that the first layer of primer is tightly bonded to the surface of the roller, and the second layer of primer is slightly thinner. Repair and adjust the small defects on the surface generated when the first layer of primer is brushed to ensure the overall uniformity of the primer. There are defects such as pinholes, air bubbles, and pores inside the primer.

(5) The processing method of a kind of belt conveyor drive roller of the present invention, adopts compacting roller to roll and compact the rubber sheet along the circumferential direction of the roller, extrudes the gas between the rubber sheet and the roller, and compresses the rubber sheet during extrusion. The solid roller is squeezed from the center of the rubber sheet to both sides, so as to ensure the extrusion of air and compact the rubber layer, so that the surface rubber sheet is tightly bonded to the outer periphery of the roller, and prevents the air from wrapping inside the rubber sheet to form air bubbles.

(6) The processing method of a kind of belt conveyor drive roller of the present invention, coats a layer of insulating film on the outer periphery of the rubber plate of the roller, and binds with steel wire, makes the insulating film tightly wrap on the outer periphery of the rubber plate, and then puts the roller into vulcanization The steam furnace is vulcanized. The setting of the insulating film not only avoids the direct contact of the steel wire with the rubber sheet, but also avoids the collision and friction with other rollers during the roller transportation and casting process, so as to protect the rubber sheet and prevent the surface of the rubber sheet from being worn or other surfaces. Defects, and the binding of steel wires helps to improve the expansion and deformation of the rubber sheet on the surface of the roller, thereby improving the use strength of the rubber sheet, reducing the generation of air bubbles inside the rubber sheet, avoiding the degumming phenomenon of the roller during long-term use, and ensuring the stable operation of the conveying system .

(7) In the processing method of a belt conveyor drive roller of the present invention, the surface rubber sheet is turned once after the roller vulcanization treatment, so that the internal state of the rubber sheet can be seen at a glance, and the intangible becomes tangible, and the production personnel can directly observe the rubber sheet. Whether there are air holes or bubbles caused by expansion and deformation inside the board. If there are obvious bubble defects, you can directly puncture the air bubbles and inject glue separately to ensure that the rubber board is pressed here after the rubber board is filled. It can effectively avoid the problem of air bubbles in the finished rubberized roller, improve the tight bonding between the rubber sheet and the roller, avoid the free air bubbles inside and affect the service life of the roller, and also prevent the conveyor system from shutting down due to accidental degumming of the roller. Thereby improving production stability and ensuring production progress.

(8) The processing method of a kind of belt conveyor drive roller of the present invention needs to carry out the secondary turning process to the rubber plate on the surface of the roller at last, and process the pattern on the surface of the rubber plate, thereby increasing the frictional force between the drive roller and the belt, Further prevent the roller from slipping, improve the operating efficiency of the roller, and ensure the efficient operation of the conveyor system.

Description of drawings

Fig. 1 is a process flow diagram of the present invention;

Fig. 2 is the coating flowchart of the rubber layer on the surface of the drum in the present invention.

detailed description

In order to further understand the content of the present invention, the present invention will be described in detail in conjunction with the accompanying drawings.

The present invention will be further described below in conjunction with embodiment.

Example 1

A processing method of a belt conveyor drive pulley according to the present embodiment comprises the following steps:

A. Production of tube skin: The raw material of tube skin is processed into tube skin through blanking, arc pressing, rolling, welding and rounding in sequence. The specific process is as follows:

(1) Blanking, use a semi-automatic cutting machine to cut the material and cut out the welding groove, the groove is cut into an X-shaped groove, the cutting surface roughness is 50 μm, and the rolling direction of the tube is consistent with the rolling direction of the material.

(2) Press the arc, the two ends of the expanded length of the tube skin are pre-pressed on the press to form a circular arc, the radius of the upper tire on the press arc is close to the radius of the inner circle of the tube skin, and the length of the pressed arc is not less than 1/8 of the circumference of the tube skin. And use the template to detect the inner diameter of the pressure arc, the gap between the template and the tube skin is less than 0.5mm.

(3) Rolling, roll the tube skin on a plate rolling machine to form a cylinder, use a sample to test the diameter of the cylinder, the gap between the sample plate and the tube skin is less than 0.5mm, and the arc length of the sample plate is not less than 1/4 of the circumference of the tube skin, Spot welding when the gap between the drum skin roll and the counterpart reaches 2-3mm, the length of the weld seam is 30-50mm, and the spacing is 300-400mm. When rolling, avoid rolling the steel plate thin or the interface is strongly aligned.

(4) The welding of the tube skin, adopt submerged arc automatic welding or _CO2 gas shielded welding to weld the tube skin into a drum, adopt submerged arc automatic welding in this embodiment, weld the weld seam after welding, and after the tube skin welding is completed Annealing treatment is required, put the shell into the annealing furnace, the temperature rise rate in the furnace does not exceed 150°C/h, when the temperature in the furnace is heated to 600°C, it is kept for 2 hours, after the heat preservation is completed, it is cooled to 150°C with the furnace, and then air-cooled to room temperature. This can fully eliminate the welding stress of the tube skin and ensure the mechanical properties of the tube skin.

(5) Calibrate the circle. Calibrate the cylinder on the plate rolling machine. The roundness of the shell is 1mm. So far, the shell processing is completed.

B. Production of the central shaft: The raw material of the shaft is sequentially processed into a central shaft through blanking, rough turning, quenching and tempering treatment, and finishing process. After quenching and tempering treatment, the performance and material of the central shaft can be adjusted to a large extent. The strength, plasticity and toughness are greatly improved, and it has good comprehensive mechanical properties.

C. Turning processing of the web. In this embodiment, there is no clear sequence for the processing of the tube skin, the central shaft and the web. Each individual component is assembled uniformly after processing.

D. Assembling: Assemble the processed tube skin, web and central shaft into one to form a drum.

E. Cover the surface of the roller with a rubber layer, which is used to increase the friction between the drive roller and the belt, effectively prevent the sliding friction between the roller and the belt, thereby reducing the belt slip, reducing the deviation and wear of the belt, Improve the operating efficiency and ensure the belt runs efficiently and with a large capacity. Therefore, the quality of the rubber layer coating is of great significance to the performance of the pulley.

At present, due to the limitation of the conventional production process, the rubber-coated roller is prone to the following problems in actual use: (1) Bubbles are prone to appear between the rubber plate and the roller when the roller is lagging, which is difficult to completely eliminate, resulting in the rubber plate not being able to be tightly connected to the roller Bonding, the rubber sheet is prone to loosening; (2) The air bubbles between the rubber sheet and the roller are dissociated inside as the roller is driven, which will easily cause the surface of the roller to sag during the transportation process, which will affect the service life of the roller; (3) In the transmission roller During the use process, the drum is often subjected to long-term friction and centripetal force. The existence of air bubbles will easily cause the degumming of the drum, which will cause the system to stop and affect the production progress. It can be seen that how to reduce the generation of air bubbles in the drum lagging process is of great significance to improve the performance of the drum.

In order to reduce the generation of air bubbles during the lagging process, the following methods are usually adopted in traditional processing: firstly, the rubber sheet is bonded to the roller, and then the glued rubber sheet is smashed to compact the rubber sheet, and then the rubber wrapping roller is vulcanization treatment. This method drives out the air bubbles between the rubber plate and the roller by smashing them to avoid residues, but the effect of defoaming is difficult to guarantee, and the production efficiency is low, so it is difficult to popularize in production. There are also a large number of patents on the optimization of the roller lagging process. Publication of documents, such as Chinese patent application number: 2014106425433, application date: November 13, 2014, and the name of the invention is: online rubber coating and repair process of belt roller rubber layer. This application discloses a belt roller adhesive Layer online encapsulation and repair process, encapsulation includes the following steps: a. Inhale component A and component B of polyurethane urea elastomer raw materials from the corresponding suction pump of the spraying machine into the heating pipeline; start the compressed air source; b. Sand blast the belt drum, and then paint the bonding material; c. Start the belt drum motor, and turn on the suction pump and spray gun, and aim the spray gun head at the surface of the rotating belt drum to spray lagging to ensure that the sprayed mixed material covers On the belt roller; d, the finished product is obtained after engraving patterns on the fully cured and formed covering layer; the repair process is to operate according to the above process step a, and then cut, clean and shape the defects of the belt roller, Finally, operate according to the above process steps c and d to obtain the repaired finished product. This application realizes the on-line spraying and repairing of the belt roller, but it does not involve how to avoid the generation of air bubbles during the encapsulation process, and cannot solve a series of problems caused by the air bubbles generated by the encapsulation.

Another example is the Chinese patent application number: 2016103811021, application date: June 1, 2016, and the name of the invention is: a method for repairing rubber rollers of titanium alloy plate pickling lines. This application discloses a titanium alloy plate acid The method of repairing the rubber roller of the washing line, the application replaces the replacement of the overall rubber layer with the surface layer of the rubber layer, which increases the mechanical strength of the roller surface, avoids the wear of the plate on the roller, and avoids the problem of the rubber layer falling off after long-term use. However, this application is to optimize how to replace the rubber plate of the roller body that needs to be repaired, thereby reducing the replacement cost and shortening the maintenance period. It does not involve how to effectively avoid the generation of air bubbles during the initial rubber covering of the roller body. It can be seen that the existing technology is more concerned with how to repair the lagging roller after problems occur, but ignores how to reduce the generation of lagging bubbles in the initial stage of roller lagging, improve the performance of the roller, and ultimately help In order to reduce the repair probability of the drum.

In the present embodiment, the coating of the rubber layer on the surface of the drum is carried out according to the following process:

Step 1. Pretreatment of the surface of the drum to remove surface dirt;

There are various pollutants on the surface of the blank roller, including various organic or inorganic substances that are not conducive to bonding. Surface pretreatment is required before encapsulation. Mechanical grinding, sandblasting or chemical treatment can be used to remove pollutants on the surface of the roller , to provide appropriate roughness to the surface of the drum, thereby increasing the effective bonding area and improving the adhesion performance. In this example, a steel wire brush is used to roughen the surface of the roller, and then a cleaning agent is used to remove the surface dirt. After cleaning, the roller is dried quickly, and then a layer of metal primer, such as PR-800, is evenly brushed on the surface of the roller quickly. Metal primer, evenly coat the metal primer on the surface of the cleaned roller, which can effectively prevent the surface of the roller from being polluted again, prolong the storage period of the roller after pretreatment, and facilitate the wetting of the roller surface by the subsequent adhesive to improve its bonding Strength and durability help to improve the performance of the roller and extend its service life. Before brushing the metal primer, the roller must be in a dry state, so as to avoid the cleaning agent remaining on the surface of the roller and affecting the bonding strength of the metal primer.

Step 2. Apply primer evenly on the surface of the roller;

After step 1, air-dry the metal primer on the surface of the roller, and then evenly brush the primer on the surface of the roller. In this embodiment, 3M: K-500 primer can be used, which can interact with water molecules in the air to produce high Adhesive force, and has good high temperature resistance, can play an excellent bonding effect. The brushing of the primer is to provide the basis for the subsequent bonding of the rubber sheet on the surface. In order to ensure the tight bonding between the surface rubber sheet and the roller, the adhesive force and uniformity of the primer are extremely important. Certain requirements, but during the long-term brushing process of the primer, the surface of the primer is easy to absorb or wrap air, resulting in air bubbles or pores on the surface, which has an adverse effect on the subsequent coating of the rubber sheet.

In this embodiment, all the brushing of the primer is carried out in the same direction, so as to avoid air bubbles or pores on the surface caused by the surface of the primer to absorb air or wrap air, and the brushing speed is uniform and stable, which helps to discharge air and prevent air bubbles from remaining; secondly In this embodiment, the primer is brushed twice, and the second layer of brushing is started after the first layer of primer is completely dried. Brushing the primer twice can not only fully ensure the uniformity of the primer, but also It is conducive to the rapid air-drying of the inside of the primer and prevents air pores from being absorbed during continuous brushing; more importantly, the thickness of the two primer brushes in this embodiment is different, and the thickness of the first layer of primer brushing is 0.05 mm, the thickness of the second layer of primer brushing is 0.03mm, the first layer of primer is slightly thicker and the second layer of primer is slightly thinner, the first layer of primer can fully cover the surface of the metal primer In the outer layer, the metal primer is used as a transition layer between the roller and the primer, so that the first layer of primer is tightly bonded to the surface of the roller, and the second layer of primer is slightly thinner, which is not only conducive to fast air drying, but also can be used for the first layer. The small defects on the surface produced during the primer brushing are repaired and adjusted to ensure the overall uniformity of the primer brushing. The second layer of primer is slightly thinner, which is also conducive to ensuring the rapid and efficient bonding between the two layers of primer. The brushing of two layers of primer can effectively strengthen the rubber layer on the surface of the roller, improve the bonding strength between the subsequent surface rubber sheet and the roller, avoid degumming of the roller, and prevent defects such as pinholes, air bubbles, and pores inside the primer.

Step 3: Glue the rubber sheet on the surface of the roller;

After the second layer of bottom glue is air-dried, the rubber sheet with a thickness of X is coated and bonded on the outside of the drum along the circumferential direction, and the rubber sheet is rolled and compacted along the circumferential direction of the drum with a compacting roller, and the gap between the rubber sheet and the drum is extruded During extrusion, the compacting roller is squeezed from the center of the rubber sheet to the two sides to prevent the air from forming air bubbles inside the rubber sheet. When wrapping and extruding the rubber sheet, it is necessary to align the position once, and do not move back and forth. After the rubber sheet is bonded and extruded, it is better to extrude a tiny rubber ring to prevent the lack of glue inside. During the extrusion process, it is found that there is a gap inside the rubber sheet. Or when there is a lack of glue, fill it up in time and continue to flatten. After the rubber sheet is bonded, it can be gradually pressed and rolled from the middle to both sides, so as to ensure the extrusion of air, compact the rubber layer, make the surface rubber sheet tightly bonded to the outer periphery of the drum, and prevent air bubbles and pores during the bonding process.

Step 4, vulcanization treatment of the rubberized drum;

After the third step, the drum needs to be put into the vulcanization steam furnace for vulcanization treatment, and the temperature in the steam furnace is 180°C. The production practice shows that the vulcanization treatment of rubber will increase the generation of rubber lagging bubbles, and the increase of such bubbles greatly affects the service life of the transmission roller. How to effectively avoid the generation of bubbles during the vulcanization treatment of the roller is the goal of continuous research by technicians .

In this embodiment, before the roller is put into vulcanization treatment, the insulating film is tightly wrapped on the outer periphery of the rubber plate with steel wire, and then the roller is put into the vulcanization steam furnace for vulcanization treatment. The setting of the insulating film can prevent the steel wire from directly contacting the rubber plate. It also avoids collision and friction with other rollers during the roller transportation and casting process, so as to protect the rubber sheet and prevent abrasion or other surface defects on the surface of the rubber sheet. More importantly, it can effectively reduce the generation of air bubbles and make the rollers The amount of air bubbles is reduced to less than 20% of that of the drum under the conventional production process, which effectively improves the performance of the drum.

After long-term production practice and active exploration, the inventor found that the increase in bubbles is likely to occur during the vulcanization process, mainly because the rubber sheet is prone to expand when heated during the vulcanization process, resulting in gaps in its internal structure, and even the formation of pores or air bubbles. Detrimental effect on performance. In this embodiment, the insulating film is tightly bound on the outer periphery of the rubber layer by steel wires, which helps to improve the expansion and deformation of the rubber sheet on the surface of the roller, enhances the compactness of the internal structure of the rubber sheet, reduces the generation of air bubbles inside the rubber sheet, and improves the rubber-covered roller. Use strength and performance. In this embodiment, canvas is used as the insulating film, which has the advantages of high strength, good bending resistance, and good wear resistance, so as to avoid affecting the protective effect of the insulating film due to damage during use.

Step 5, turning the surface of the rubber-covered roller once;

After the treatment in step 4, the amount of air bubbles inside the rubber-covered roller has been significantly reduced. Production practice shows that the service life of the drive roller has been improved, which has improved the operation stability of the entire conveying system and helped to improve the overall conveying efficiency, but still It cannot meet the actual needs of the mass production of the current enterprise. The transmission roller is subjected to long-term friction and centripetal force during long-term use, and it will still be easily damaged due to the residual air bubbles inside it, and the size and distribution of the remaining internal air bubbles are difficult to observe. Judging, how to further remove the residual air bubbles in the drum has become a difficult problem for technicians to overcome.

The inventor is ingenious. After the vulcanization treatment of the roller is completed, the roller is sent to the lathe to turn the surface rubber sheet along the circumferential direction, so that the internal state of the rubber sheet can be seen at a glance, and the invisible air bubbles can be changed into tangible ones. The production personnel can directly observe the rubber sheet. Whether there are still pores or air bubbles inside the board due to expansion and deformation. If there are obvious bubble defects, the air bubbles can be punctured directly, and the glue can be injected separately to ensure that the rubber plate here will be sealed after the rubber plate is filled. Just compact it. In order to ensure the efficient turning of the rubber sheet, achieve the maximum air bubble removal effect, and avoid unnecessary waste of resources, the inventor finally found that the bubbles generated inside the rubber sheet were distributed in an aggregated manner after long-term analysis, exploration and experimental verification, and They are mainly gathered at 1/5-1/3 thickness of the outer side of the rubber sheet. Therefore, the turning thickness of the rubber sheet in this embodiment is 1/5X, and the turned thickness of the rubber sheet is the required thickness for actual use. For example, in this embodiment, the thickness of the lagging required for the actual use of the drive roller is 12mm, while the thickness of the rubber sheet bonded for the first time in step 3 is 15mm. During the first turning process, 3mm of the surface layer of the rubber sheet is removed, and the removed part is the rubber sheet. The part that is most easily deformed and the bubbles are concentrated in the vulcanization process, and the internal state of the rubber plate can be directly observed after removing the outermost rubber plate. If there are still bubbles, the glue can be repaired in time. After this process, the bubbles in the drum The amount of air bubbles is reduced to less than 5% of that of the roller under the conventional production process, which significantly improves the tight adhesion between the rubber sheet and the roller, avoids the free air bubbles inside and affects the service life of the roller, and also prevents the conveyor system from being accidentally degummed due to the roller. Stop the problem of downtime, thereby improving production stability and ensuring production progress.

F. Carry out turning treatment on the rubber layer on the surface of the drum, and process the surface pattern.

After step 5, the rubber plate on the surface of the roller is turned twice to process the surface pattern of the rubber plate, such as rhombus or herringbone pattern. The friction between them can further prevent the rollers from slipping, improve the operating efficiency of the rollers, and ensure the efficient operation of the conveyor system.

Example 2

The processing method of a belt conveyor driving drum in this embodiment is basically the same as that in Embodiment 1, the difference is that in step A of this embodiment, the drum skin needs to be annealed after welding, and the temperature in the furnace is heated to 650°C and then kept warm After 2.5 hours, cool down to 160°C with the furnace after the heat preservation is over, and then air cool to room temperature.

The specific process of step 2 of this embodiment is as follows: brush the first layer of primer evenly on the surface of the drum in the same direction, after the first layer of primer is air-dried, brush the second layer of primer evenly in the same direction, the thickness of the first layer of primer 0.06mm, the thickness of the second layer of primer is 0.05mm.

The temperature in the steam oven in Step 4 of this embodiment is 200°C, and the insulating film is a PET film. The PET film has excellent mechanical properties, particularly outstanding strength and toughness. Its tensile strength and impact strength are better, and it also has excellent heat resistance. , cold resistance and oil resistance, suitable for wrapping around the rubber sheet.

In the fifth step of this embodiment, the turning thickness of the rubber plate on the surface of the drum is 1/3X.

Example 3

The processing method of a belt conveyor driving drum in this embodiment is basically the same as that in Embodiment 1, the difference is that in step A of this embodiment, the drum skin needs to be annealed after welding, and the temperature in the furnace is heated to 620°C and then kept warm After 2.2 hours, cool down to 155°C with the furnace after the heat preservation is over, and then air cool to room temperature.

The specific process of step 2 of this embodiment is as follows: brush the first layer of primer evenly on the surface of the drum in the same direction, after the first layer of primer is air-dried, brush the second layer of primer evenly in the same direction, the thickness of the first layer of primer 0.06mm, the thickness of the second layer of primer is 0.04mm.

The temperature in the steam oven in Step 4 of this embodiment is 190° C., and the turning thickness of the rubber plate on the surface of the drum in Step 5 is 1/4X.

The above schematically describes the present invention and its implementation, which is not restrictive, and what is shown in the drawings is only one of the implementations of the present invention, and the actual structure is not limited thereto. Therefore, if a person of ordinary skill in the art is inspired by it, without departing from the inventive concept of the present invention, without creatively designing a structural mode and embodiment similar to the technical solution, it shall all belong to the protection scope of the present invention .

Claims (8)

1. a kind of processing method of belt conveyor driving drum, it is characterised in that comprise the following steps：

A, the making of cylinder skin：By cylinder skin raw material successively through blanking, pressure arc, roll, weld, school sired results sequence is processed as a skin；

B, the making of central shaft：Axle raw material is processed as central shaft through blanking, rough turn, modifier treatment, smart car process successively；

C, the turnery processing of former；

D, assemble：The assembling of the cylinder skin processed, former and central shaft is integrated, forms roller；

E, in cylinder surface cladding rubber layer；Detailed process is as follows：

Step 1: cylinder surface pre-processes, surface contaminants are removed；

Step 2: uniformly brush primer in cylinder surface；

Step 3: in cylinder surface sticking rubber plate；After primer air-dries, the rubber slab that thickness is X is circumferentially coated and is bonded in Cylindrical outer is simultaneously compacted；

Step 4: the vulcanizing treatment of roller；

Step 5: turning processing is carried out to cylinder surface；

Turning processing is carried out to the rubber slab on vulcanization back roll surface, the turning thickness of rubber slab is (1/5~1/3) X；Specific mistake Journey is as follows：Roller is sent into lathe turnery processing circumferentially is carried out to rubber surface plate, turning thickness is (1/5~1/3) X, car Remaining printing on surface of rubber plate is observed after cutting and whether there is bubble, finds to puncture bubble during bubble, it is independent to the gap at the bubble Injecting glue, and rubber slab is compacted herein；

F, turning processing is carried out to the rubber layer of cylinder surface, processes surface detail.

A kind of 2. processing method of belt conveyor driving drum according to claim 1, it is characterised in that：In step A Need to be made annealing treatment after cylinder skin welding, detailed process is as follows：Cylinder skin is put into annealing furnace, programming rate is no more than in annealing furnace 150 DEG C/h, in-furnace temperature is incubated 2~2.5 hours after being heated to 600-650 DEG C, and insulation cools to 150~160 with the furnace after terminating DEG C, then it is air-cooled to room temperature.

A kind of 3. processing method of belt conveyor driving drum according to claim 1, it is characterised in that：Step 1 has Body process is as follows：Mechanical grinding or blasting treatment are carried out to cylinder surface, and surface contaminants are removed using cleaning agent, roller air-dries Afterwards, layer of metal priming paint is uniformly brushed in cylinder surface.

A kind of 4. processing method of belt conveyor driving drum according to claim 1, it is characterised in that：Step 2 has Body process is as follows：First layer primer is uniformly brushed in the same direction in cylinder surface, after first layer primer air-dries, in the same direction Uniformly brush second layer primer.

A kind of 5. processing method of belt conveyor driving drum according to claim 4, it is characterised in that：Described first Layer primer thickness is 0.05~0.06mm, and second layer primer thickness is 0.03~0.05mm.

A kind of 6. processing method of belt conveyor driving drum according to claim 1, it is characterised in that：Step 3 Detailed process is as follows：Rubber slab is rolled and is compacted along roll circumference direction with compacting roller, squeeze out rubber slab and roller it Between bubble, compacting roller is extruded from rubber slab center to two side positions during extruding.

A kind of 7. processing method of belt conveyor driving drum according to claim 6, it is characterised in that：Step 4 Detailed process is as follows：After rubber slab compacting, one layer of secluding film is coated in rubber slab periphery, and with wire binding, then by roller Put into sulfuration steam stove and carry out vulcanizing treatment, the temperature in steam oven is 180~200 DEG C.

A kind of 8. processing method of belt conveyor driving drum according to claim 7, it is characterised in that：The isolation Film is canvas or PET film.