CN110856982A - Joint method of aromatic wheel core conveying belt - Google Patents
Joint method of aromatic wheel core conveying belt Download PDFInfo
- Publication number
- CN110856982A CN110856982A CN201810976428.8A CN201810976428A CN110856982A CN 110856982 A CN110856982 A CN 110856982A CN 201810976428 A CN201810976428 A CN 201810976428A CN 110856982 A CN110856982 A CN 110856982A
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- joint
- belt
- conveying belt
- determining
- cloth layer
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- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
- B29C66/022—Mechanical pre-treatments, e.g. reshaping
- B29C66/0224—Mechanical pre-treatments, e.g. reshaping with removal of material
- B29C66/02245—Abrading, e.g. grinding, sanding, sandblasting or scraping
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
- B29C66/026—Chemical pre-treatments
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
- B29C66/128—Stepped joint cross-sections
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/84—Specific machine types or machines suitable for specific applications
- B29C66/855—Belt splicing machines
-
- 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
- B29L2029/00—Belts or bands
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Belt Conveyors (AREA)
Abstract
The invention discloses a method for jointing a conveying belt with a fragrant wheel core, which comprises the following steps: (1) the conveying belts at two ends are clamped by a clamp, so that the slipping phenomenon is avoided; tensioning the conveyor belt by using a hand chain when the conveyor belt is tensioned to the lowest position; overlapping and correspondingly marking the central lines of two ends of a joint to be prepared, paving the two sides, measuring the straightness by using a 25m nylon wire, preventing the joint from bending, subtracting the length of the joint, and verifying whether the circumference of the conveying belt is accurate or not; (2) and verifying the running direction of the rack, determining the running direction of joint stubble fitting and marking by using chalk. The hot vulcanization joint manufactured by adopting the hot vulcanization process has high bonding strength, and can reach 100% of the self bonding strength of the conveying belt; the overall strength is equivalent to 60-80% of the strength of the conveying belt, high joint efficiency can be guaranteed, the joint is very stable, the service life of the joint is very long, and the joint is easy to master, so that the problems that the joint quality is poor and the joint is easy to damage in the conventional joint mode are solved.
Description
Technical Field
The invention relates to the technical field of conveying belts, in particular to a method for jointing a conveying belt with an aromatic wheel core.
Background
The aramid fiber has high strength, high modulus, small elongation and good heat-resistant stability, is a novel ideal framework lining material of the conveyer belt, and has very important significance for improving the load capacity, shock absorption, wear resistance, flame retardance, service life, reducing the self weight of the conveyer belt and preventing puncture and tear. The technical performance of aramid fiber, aramid fiber fabric structures for conveyor belts, fabric-to-rubber bonding techniques, processing methods, application techniques and their technical and economic effects are becoming increasingly mature.
The existing joint mode generally adopts a mechanical joint or a cold bonding joint. The mechanical joint is generally a belt buckle joint, the joint method is convenient, quick and economical, but the joint efficiency is low, the joint is easy to damage, and the service life of a conveying belt product is influenced to a certain extent. Cold-bond joints, i.e., joints made with cold-stick adhesives. This joint method is more efficient and economical than mechanical joints and has a relatively good joint effect, but from a practical point of view, the process conditions are difficult to master and the quality of the adhesive has a very large influence on the joint and is therefore not very stable.
In summary, the conventional joint method has the problems of poor joint quality and easy damage, and therefore, a joint method of the aromatic wheel core conveying belt is provided.
Disclosure of Invention
The invention aims to provide a method for jointing a core conveyor belt of a fragrant wheel, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a method for jointing a fragrant wheel core conveyer belt comprises the following steps:
(1) the conveying belts at two ends are clamped by a clamp, so that the slipping phenomenon is avoided; tensioning the conveyor belt by using a hand chain when the conveyor belt is tensioned to the lowest position; overlapping and correspondingly marking the central lines of two ends of a joint to be prepared, paving the two sides, measuring the straightness by using a 25m nylon wire, preventing the joint from bending, subtracting the length of the joint, and verifying whether the circumference of the conveying belt is accurate or not;
(2) verifying the running direction of the rack, determining the running direction of joint stubble matching, and marking with chalk;
(3) the joint parts at the two ends of the conveying belt are overlapped, the overlapping length is the belt width, and a hot plate of a movable vulcanizing machine is taken as an operation platform below the belt width;
(4) marking with a board ruler and chalk, determining the center of the conveying belt, wherein the length is larger than the overlapping distance so as to be convenient for making a reference mark for inspection after the joint is finished, and determining three central points at the center of the conveying belt;
(5) determining the inclination angle by using an angle square, and stripping the belt heads at two ends respectively, so as to strip the ladder along the working surface and strip the ladder along the non-working surface to form corresponding layers;
(6) uniformly brushing vulcanized mucilage on the steps, wherein both the steps are coated, the cross section of the rubber covered by the scraper head is also coated, and the mucilage is also coated on the two sides of the steps;
(7) after the mucilage solvent is volatilized, laying an interlayer adhesive sticking sheet, wherein the adhesive sheet needs to be laid flat and cannot have a little adhesive shortage part, and the redundant part of the edge part is cut off;
(8) installing a hot plate, starting heating, pressurizing at the same time of heating, starting timing when the temperature is raised to 145 ℃, and determining the vulcanization time according to the thickness of the belt body;
(9) after the vulcanization time is finished, the hot plate can be detached when the temperature of the flat plate is reduced to below 60 ℃, and the flat plate can be installed for use after being placed to the ambient temperature.
Preferably, in the step (5), the lower cloth layer is not damaged during peeling, after the rubber surface or the cloth layer is slightly scratched by a wallpaper knife, the cloth layer is separated by a push shovel by a screwdriver, the cloth layer is torn one by a vice, and 10-15mm belt edges are reserved on two sides of one end of the joint.
Preferably, in the step (5), the surfaces of the rubber and the cloth layer need to be polished to be rough, the contact area is increased as much as possible, dirt is removed by ethyl acetate or gasoline, the interface is kept clean, and the polishing or scorching phenomenon is avoided during polishing.
Preferably, the joint cover glue part and the two sides of the belt edge in the step (7) must be coated with glue paste and sealed by using cover glue strips with the same quality, enough edge glue must be filled, and the upper side of the joint cover glue part and the two sides of the belt edge are isolated from a hot plate by non-woven fabrics or old newspapers.
Preferably, a sizing block is used at the joint position in the step (7), and the thickness of the sizing block is 1-2 mm less than that of the joint belt body, so as to ensure the width and the pressure uniformity of the belt body.
Compared with the prior art, the invention has the beneficial effects that: the hot vulcanization joint manufactured by the hot vulcanization process has high bonding strength which can reach 100% of the self bonding strength of the conveyer belt; the overall strength is equivalent to 60-80% of the strength of the conveying belt, high joint efficiency can be guaranteed, the joint is very stable, the service life of the joint is very long, and the joint is easy to master, so that the problems that the joint quality is poor and the joint is easy to damage in the conventional joint mode are solved.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a technical scheme that: a method for jointing a fragrant wheel core conveyer belt comprises the following steps:
(1) the conveying belts at two ends are clamped by a clamp, so that the slipping phenomenon is avoided; tensioning the conveyor belt by using a hand chain when the conveyor belt is tensioned to the lowest position; overlapping and correspondingly marking the central lines of two ends of a joint to be prepared, paving the two sides, measuring the straightness by using a 25m nylon wire, preventing the joint from bending, subtracting the length of the joint, and verifying whether the circumference of the conveying belt is accurate or not;
(2) verifying the running direction of the rack, determining the running direction of joint stubble matching, and marking with chalk;
(3) the joint parts at the two ends of the conveying belt are overlapped, the overlapping length is the belt width, and a hot plate of a movable vulcanizing machine is taken as an operation platform below the belt width;
(4) marking with a board ruler and chalk, determining the center of the conveying belt, wherein the length is larger than the overlapping distance so as to be convenient for making a reference mark for inspection after the joint is finished, and determining three central points at the center of the conveying belt;
(5) determining the inclination angle by using an angle square, and stripping the belt heads at two ends respectively, so as to strip the ladder along the working surface and strip the ladder along the non-working surface to form corresponding layers;
(6) uniformly brushing vulcanized mucilage on the steps, wherein both the steps are coated, the cross section of the rubber covered by the scraper head is also coated, and the mucilage is also coated on the two sides of the steps;
(7) after the mucilage solvent is volatilized, laying an interlayer adhesive sticking sheet, wherein the adhesive sheet needs to be laid flat and cannot have a little adhesive shortage part, and the redundant part of the edge part is cut off;
(8) installing a hot plate, starting heating, pressurizing at the same time of heating, starting timing when the temperature is raised to 145 ℃, and determining the vulcanization time according to the thickness of the belt body;
(9) after the vulcanization time is finished, the hot plate can be detached when the temperature of the flat plate is reduced to below 60 ℃, and the flat plate can be installed for use after being placed to the ambient temperature.
The first embodiment is as follows:
firstly, clamping the conveying belts at two ends by using a clamp to avoid the phenomenon of slipping; tensioning the conveyor belt by using a hand chain when the conveyor belt is tensioned to the lowest position; overlapping and correspondingly marking the central lines of two ends of a joint to be prepared, paving the two sides, measuring the straightness by using a 25m nylon wire, preventing the joint from bending, subtracting the length of the joint, and verifying whether the circumference of the conveying belt is accurate or not; verifying the running direction of the rack, determining the running direction of joint stubble matching, and marking with chalk; the joint parts at the two ends of the conveying belt are overlapped, the overlapping length is the belt width, and a hot plate of a movable vulcanizing machine is taken as an operation platform below the belt width; marking with a board ruler and chalk, determining the center of the conveying belt, wherein the length is larger than the overlapping distance so as to be convenient for making a reference mark for inspection after the joint is finished, and determining three central points at the center of the conveying belt; determining the inclination angle by using an angle square, and stripping the belt heads at two ends respectively, so as to strip the ladder along the working surface and strip the ladder along the non-working surface to form corresponding layers; uniformly brushing vulcanized mucilage on the steps, wherein both the steps are coated, the cross section of the rubber covered by the scraper head is also coated, and the mucilage is also coated on the two sides of the steps; after the mucilage solvent is volatilized, laying an interlayer adhesive sticking sheet, wherein the adhesive sheet needs to be laid flat and cannot have a little adhesive shortage part, and the redundant part of the edge part is cut off; installing a hot plate, starting heating, pressurizing at the same time of heating, starting timing when the temperature is raised to 145 ℃, and determining the vulcanization time according to the thickness of the belt body; after the vulcanization time is finished, the hot plate can be detached when the temperature of the flat plate is reduced to below 60 ℃, and the flat plate can be installed for use after being placed to the ambient temperature.
Example two:
in the first embodiment, the following steps are added:
and (5) the lower cloth layer is not damaged during stripping, a wallpaper knife is used for slightly scratching the rubber surface or the cloth layer, a screwdriver is used for pushing and shoveling the cloth layer for layering, the cloth layer is torn off one by using a vice, and 10-15mm belt edges are reserved on two sides of one end of the joint.
Firstly, clamping the conveying belts at two ends by using a clamp to avoid the phenomenon of slipping; tensioning the conveyor belt by using a hand chain when the conveyor belt is tensioned to the lowest position; overlapping and correspondingly marking the central lines of two ends of a joint to be prepared, paving the two sides, measuring the straightness by using a 25m nylon wire, preventing the joint from bending, subtracting the length of the joint, and verifying whether the circumference of the conveying belt is accurate or not; verifying the running direction of the rack, determining the running direction of joint stubble matching, and marking with chalk; the joint parts at the two ends of the conveying belt are overlapped, the overlapping length is the belt width, and a hot plate of a movable vulcanizing machine is taken as an operation platform below the belt width; marking with a board ruler and chalk, determining the center of the conveying belt, wherein the length is larger than the overlapping distance so as to be convenient for making a reference mark for inspection after the joint is finished, and determining three central points at the center of the conveying belt; determining the inclination angle by using an angle square, and stripping the belt heads at two ends respectively, so as to strip the ladder along the working surface and strip the ladder along the non-working surface to form corresponding layers; peeling off the lower cloth layer without damaging the lower cloth layer, slightly cutting off the rubber surface or the cloth layer by a wallpaper knife, then pushing and shoveling the cloth layer by a screwdriver, and tearing the cloth layer one by using a vice, wherein 10-15mm belt edges are reserved on two sides of one end of the joint; uniformly brushing vulcanized mucilage on the steps, wherein both the steps are coated, the cross section of the rubber covered by the scraper head is also coated, and the mucilage is also coated on the two sides of the steps; after the mucilage solvent is volatilized, laying an interlayer adhesive sticking sheet, wherein the adhesive sheet needs to be laid flat and cannot have a little adhesive shortage part, and the redundant part of the edge part is cut off; installing a hot plate, starting heating, pressurizing at the same time of heating, starting timing when the temperature is raised to 145 ℃, and determining the vulcanization time according to the thickness of the belt body; after the vulcanization time is finished, the hot plate can be detached when the temperature of the flat plate is reduced to below 60 ℃, and the flat plate can be installed for use after being placed to the ambient temperature.
Example three:
in the second embodiment, the following steps are added:
in the step (5), the surfaces of the rubber and the cloth layer need to be polished to be rough, the contact area is increased as much as possible, dirt is removed by ethyl acetate or gasoline, the interface is kept clean, and the polishing or scorching phenomenon is avoided during polishing.
Firstly, clamping the conveying belts at two ends by using a clamp to avoid the phenomenon of slipping; tensioning the conveyor belt by using a hand chain when the conveyor belt is tensioned to the lowest position; overlapping and correspondingly marking the central lines of two ends of a joint to be prepared, paving the two sides, measuring the straightness by using a 25m nylon wire, preventing the joint from bending, subtracting the length of the joint, and verifying whether the circumference of the conveying belt is accurate or not; verifying the running direction of the rack, determining the running direction of joint stubble matching, and marking with chalk; the joint parts at the two ends of the conveying belt are overlapped, the overlapping length is the belt width, and a hot plate of a movable vulcanizing machine is taken as an operation platform below the belt width; marking with a board ruler and chalk, determining the center of the conveying belt, wherein the length is larger than the overlapping distance so as to be convenient for making a reference mark for inspection after the joint is finished, and determining three central points at the center of the conveying belt; determining the inclination angle by using an angle square, and stripping the belt heads at two ends respectively, so as to strip the ladder along the working surface and strip the ladder along the non-working surface to form corresponding layers; peeling off the lower cloth layer without damaging the lower cloth layer, slightly cutting off the rubber surface or the cloth layer by a wallpaper knife, then pushing and shoveling the cloth layer by a screwdriver, and tearing the cloth layer one by using a vice, wherein 10-15mm belt edges are reserved on two sides of one end of the joint; the surfaces of the rubber and the cloth layer need to be polished to be rough, the contact area is increased as much as possible, the dirt is removed by ethyl acetate or gasoline, the interface is kept clean, and the polishing or scorching phenomenon is avoided during polishing; uniformly brushing vulcanized mucilage on the steps, wherein both the steps are coated, the cross section of the rubber covered by the scraper head is also coated, and the mucilage is also coated on the two sides of the steps; after the mucilage solvent is volatilized, laying an interlayer adhesive sticking sheet, wherein the adhesive sheet needs to be laid flat and cannot have a little adhesive shortage part, and the redundant part of the edge part is cut off; installing a hot plate, starting heating, pressurizing at the same time of heating, starting timing when the temperature is raised to 145 ℃, and determining the vulcanization time according to the thickness of the belt body; after the vulcanization time is finished, the hot plate can be detached when the temperature of the flat plate is reduced to below 60 ℃, and the flat plate can be installed for use after being placed to the ambient temperature.
Example four:
in the third embodiment, the following steps are added:
and (4) coating adhesive cement on the joint cover adhesive part and the two sides of the belt edge in the step (7), sealing by using cover adhesive rubber strips with the same quality, filling enough edge adhesive, and isolating the non-woven fabric or the old newspaper from a hot plate.
Firstly, clamping the conveying belts at two ends by using a clamp to avoid the phenomenon of slipping; tensioning the conveyor belt by using a hand chain when the conveyor belt is tensioned to the lowest position; overlapping and correspondingly marking the central lines of two ends of a joint to be prepared, paving the two sides, measuring the straightness by using a 25m nylon wire, preventing the joint from bending, subtracting the length of the joint, and verifying whether the circumference of the conveying belt is accurate or not; verifying the running direction of the rack, determining the running direction of joint stubble matching, and marking with chalk; the joint parts at the two ends of the conveying belt are overlapped, the overlapping length is the belt width, and a hot plate of a movable vulcanizing machine is taken as an operation platform below the belt width; marking with a board ruler and chalk, determining the center of the conveying belt, wherein the length is larger than the overlapping distance so as to be convenient for making a reference mark for inspection after the joint is finished, and determining three central points at the center of the conveying belt; determining the inclination angle by using an angle square, and stripping the belt heads at two ends respectively, so as to strip the ladder along the working surface and strip the ladder along the non-working surface to form corresponding layers; peeling off the lower cloth layer without damaging the lower cloth layer, slightly cutting off the rubber surface or the cloth layer by a wallpaper knife, then pushing and shoveling the cloth layer by a screwdriver, and tearing the cloth layer one by using a vice, wherein 10-15mm belt edges are reserved on two sides of one end of the joint; the surfaces of the rubber and the cloth layer need to be polished to be rough, the contact area is increased as much as possible, the dirt is removed by ethyl acetate or gasoline, the interface is kept clean, and the polishing or scorching phenomenon is avoided during polishing; uniformly brushing vulcanized mucilage on the steps, wherein both the steps are coated, the cross section of the rubber covered by the scraper head is also coated, and the mucilage is also coated on the two sides of the steps; after the mucilage solvent is volatilized, laying an interlayer adhesive sticking sheet, wherein the adhesive sheet needs to be laid flat and cannot have a little adhesive shortage part, and the redundant part of the edge part is cut off; the joint cover glue part and the two sides of the belt edge are coated with glue paste and sealed by cover glue adhesive tapes with the same quality, enough edge glue is filled, and the upper side of the joint cover glue part and the two sides of the belt edge are isolated from a hot plate by non-woven fabrics or old newspaper; installing a hot plate, starting heating, pressurizing at the same time of heating, starting timing when the temperature is raised to 145 ℃, and determining the vulcanization time according to the thickness of the belt body; after the vulcanization time is finished, the hot plate can be detached when the temperature of the flat plate is reduced to below 60 ℃, and the flat plate can be installed for use after being placed to the ambient temperature.
Example five:
and (4) using a sizing block at the joint part in the step (7), wherein the thickness of the sizing block is less than that of the joint belt body by 1-2 mm so as to ensure the width and the pressure uniformity of the belt body.
Firstly, clamping the conveying belts at two ends by using a clamp to avoid the phenomenon of slipping; tensioning the conveyor belt by using a hand chain when the conveyor belt is tensioned to the lowest position; overlapping and correspondingly marking the central lines of two ends of a joint to be prepared, paving the two sides, measuring the straightness by using a 25m nylon wire, preventing the joint from bending, subtracting the length of the joint, and verifying whether the circumference of the conveying belt is accurate or not; verifying the running direction of the rack, determining the running direction of joint stubble matching, and marking with chalk; the joint parts at the two ends of the conveying belt are overlapped, the overlapping length is the belt width, and a hot plate of a movable vulcanizing machine is taken as an operation platform below the belt width; marking with a board ruler and chalk, determining the center of the conveying belt, wherein the length is larger than the overlapping distance so as to be convenient for making a reference mark for inspection after the joint is finished, and determining three central points at the center of the conveying belt; determining the inclination angle by using an angle square, and stripping the belt heads at two ends respectively, so as to strip the ladder along the working surface and strip the ladder along the non-working surface to form corresponding layers; peeling off the lower cloth layer without damaging the lower cloth layer, slightly cutting off the rubber surface or the cloth layer by a wallpaper knife, then pushing and shoveling the cloth layer by a screwdriver, and tearing the cloth layer one by using a vice, wherein 10-15mm belt edges are reserved on two sides of one end of the joint; the surfaces of the rubber and the cloth layer need to be polished to be rough, the contact area is increased as much as possible, the dirt is removed by ethyl acetate or gasoline, the interface is kept clean, and the polishing or scorching phenomenon is avoided during polishing; uniformly brushing vulcanized mucilage on the steps, wherein both the steps are coated, the cross section of the rubber covered by the scraper head is also coated, and the mucilage is also coated on the two sides of the steps; after the mucilage solvent is volatilized, laying an interlayer adhesive sticking sheet, wherein the adhesive sheet needs to be laid flat and cannot have a little adhesive shortage part, and the redundant part of the edge part is cut off; the joint cover glue part and the two sides of the belt edge are coated with glue paste and sealed by cover glue adhesive tapes with the same quality, enough edge glue is filled, and the upper side of the joint cover glue part and the two sides of the belt edge are isolated from a hot plate by non-woven fabrics or old newspaper; a sizing block is required to be used at the joint part, and the thickness of the sizing block is 1-2 mm less than that of the joint belt body so as to ensure the width and the pressure of the belt body to be uniform; installing a hot plate, starting heating, pressurizing at the same time of heating, starting timing when the temperature is raised to 145 ℃, and determining the vulcanization time according to the thickness of the belt body; after the vulcanization time is finished, the hot plate can be detached when the temperature of the flat plate is reduced to below 60 ℃, and the flat plate can be installed for use after being placed to the ambient temperature.
In the fourth example, the following steps were added:
vulcanization time comparison table:
| thickness of belt body | 8mm | 10mm | 12mm | 14mm | 16mm | 18mm | 20mm |
| Vulcanization time | 10′ | 15′ | 20′ | 25′ | 30′ | 35′ | 40′ |
The hot vulcanization joint manufactured by the hot vulcanization process has high bonding strength which can reach 100% of the self bonding strength of the conveyer belt; the overall strength is equivalent to 60-80% of the strength of the conveying belt, high joint efficiency can be guaranteed, the joint is very stable, the service life of the joint is very long, and the joint is easy to master, so that the problems that the joint quality is poor and the joint is easy to damage in the conventional joint mode are solved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A method for jointing a fragrant wheel core conveyer belt is characterized in that: the method comprises the following steps:
(1) the conveying belts at two ends are clamped by a clamp, so that the slipping phenomenon is avoided; tensioning the conveyor belt by using a hand chain when the conveyor belt is tensioned to the lowest position; overlapping and correspondingly marking the central lines of two ends of a joint to be prepared, paving the two sides, measuring the straightness by using a 25m nylon wire, preventing the joint from bending, subtracting the length of the joint, and verifying whether the circumference of the conveying belt is accurate or not;
(2) verifying the running direction of the rack, determining the running direction of joint stubble matching, and marking with chalk;
(3) the joint parts at the two ends of the conveying belt are overlapped, the overlapping length is the belt width, and a hot plate of a movable vulcanizing machine is taken as an operation platform below the belt width;
(4) marking with a board ruler and chalk, determining the center of the conveying belt, wherein the length is larger than the overlapping distance so as to be convenient for making a reference mark for inspection after the joint is finished, and determining three central points at the center of the conveying belt;
(5) determining the inclination angle by using an angle square, and stripping the belt heads at two ends respectively, so as to strip the ladder along the working surface and strip the ladder along the non-working surface to form corresponding layers;
(6) uniformly brushing vulcanized mucilage on the steps, wherein both the steps are coated, the cross section of the rubber covered by the scraper head is also coated, and the mucilage is also coated on the two sides of the steps;
(7) after the mucilage solvent is volatilized, laying an interlayer adhesive sticking sheet, wherein the adhesive sheet needs to be laid flat and cannot have a little adhesive shortage part, and the redundant part of the edge part is cut off;
(8) installing a hot plate, starting heating, pressurizing at the same time of heating, starting timing when the temperature is raised to 145 ℃, and determining the vulcanization time according to the thickness of the belt body;
(9) after the vulcanization time is finished, the hot plate can be detached when the temperature of the flat plate is reduced to below 60 ℃, and the flat plate can be installed for use after being placed to the ambient temperature.
2. The method of claim 1, wherein the step of splicing the core belt comprises: and (5) the lower cloth layer is not damaged during stripping, a wallpaper knife can be used for slightly scratching the rubber surface or the cloth layer, a screwdriver is used for pushing and shoveling the cloth layer for layering, the cloth layer is torn one by using a vice, and 10-15mm belt edges are reserved on two sides of one end of the joint.
3. The method of claim 1, wherein the step of splicing the core belt comprises: in the step (5), the surfaces of the rubber and the cloth layer need to be polished to be rough, the contact area is increased as much as possible, dirt is removed by ethyl acetate or gasoline, the interface is kept clean, and the polishing or scorching phenomenon is avoided during polishing.
4. The method of claim 1, wherein the step of splicing the core belt comprises: and (3) coating adhesive cement on the joint cover adhesive part and the two sides of the belt edge in the step (7), sealing by using cover adhesive tapes with the same quality, filling enough edge adhesive, and isolating the non-woven fabric or the old newspaper from a hot plate.
5. The method of claim 1, wherein the step of splicing the core belt comprises: and (3) using a sizing block at the joint part in the step (7), wherein the thickness of the sizing block is less than that of the joint belt body by 1-2 mm so as to ensure the width and the pressure uniformity of the belt body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810976428.8A CN110856982A (en) | 2018-08-25 | 2018-08-25 | Joint method of aromatic wheel core conveying belt |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111594573A (en) * | 2020-04-08 | 2020-08-28 | 贵州大方发电有限公司 | Belt vulcanization joint and splicing method thereof |
| CN114536783A (en) * | 2022-01-06 | 2022-05-27 | 中国化学工程第三建设有限公司 | Method for bonding belt of belt conveyor |
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| CN103407180A (en) * | 2013-08-06 | 2013-11-27 | 莱芜钢铁集团有限公司 | Polyester conveyor belt thermal cementation connection method |
| CN107618188A (en) * | 2017-09-11 | 2018-01-23 | 无锡宝通科技股份有限公司 | A kind of fabric core tubular band high-strength joint method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103407180A (en) * | 2013-08-06 | 2013-11-27 | 莱芜钢铁集团有限公司 | Polyester conveyor belt thermal cementation connection method |
| CN107618188A (en) * | 2017-09-11 | 2018-01-23 | 无锡宝通科技股份有限公司 | A kind of fabric core tubular band high-strength joint method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111594573A (en) * | 2020-04-08 | 2020-08-28 | 贵州大方发电有限公司 | Belt vulcanization joint and splicing method thereof |
| CN114536783A (en) * | 2022-01-06 | 2022-05-27 | 中国化学工程第三建设有限公司 | Method for bonding belt of belt conveyor |
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