types of conveyor belt splices

Full line of accessories to ensure maximum performance, best fit, and ease of maintenance. function printit(){ Preparing the steps on a bias provides an increased surface area of the splice which results in greater adhesion and a stronger seam. The early signs of adhesion breakdown in a vulcanized splice are nearly invisible to the naked eye. No matter what the belt condition, mechanical fasteners are a good choice for both new and older, worn belts. There is no need to build up worn sections when splicing and repairing a worn belt. If you are having premature popping issues with your fingers on a traditional finger splice, then the finger over finger splice may be your best solution. Types of Conveyor Belt Mechanical Splices, if the conveyor uses pulleys that are smaller than 300 millimeters, The Woes of the Belt Splice-to-Belt Cleaner Relationship. Hinged fasteners provide several other benefits. Hot or cold glued is best utilized for thermoplastic belt styles and glued cold bond is commonly used on rubber belts. This is an advantage in remote or underground locations. We offer three types of beltsplicing for anendless beltconstruction; finger splices,SFL splices, and step splices. In this case, solid-plate fasteners may be too large to bend around the pulley, causing components of the splice to pull out or break. The process is usually performed in case of new installation, refurbishing programs, maintenance, or during repair. Identifying the correct fastener for the application is essential to ensure maximum splice life and performance. strength ". if (VERSION > 3) { Solid-plate splices can be sift-proof and, if filler materials are used with a hinged fastener, only minimal sifting should occur. |-----------------------|----------------------------------------------------|--------------------------------------------------------------------|-----------------------------| Belt must be dried | Overhead tarp is sufficient | Vulcanized splices, in contrast, typically deteriorate from the inside out due to poor adhesion. On steelcord belting, the wire ropes forming the steel cords have to be exposed by removing the covers and surrounding rubber. What are the costs associated with long conveyor downtimes? Contact a Sparks representative today to learn how belt splicing can increase your production and save you money. New designs, materials and processes are making mechanical splicing better, and incorporating mechanical belt fasteners into a splicing routine can provide numerous benefits for output and bottom line. Old and/or worn fabric belts are not well suited to vulcanization because the belt layers are weaker and will become brittle when heat is applied. Four types of lacing are available; Clipper (low profile, good for package handling), Alligator (low profile, does not require special installation tools), Ready Set lacing is well suited for conveying heavy or abrasive products. Nilos- (Hans Ziller KG) Fax: (636) 741-5701, Belt Power Home Office2197 Canton Road, Suite 208Marietta, GA 30066, Phone: (800) 886-BELT [2358]Fax: (404) 419-3717, Copyright @ 2022 Accurate Industrial | Site by SVM E-Marketing Solutions. If your belts have been vulcanized this likely wont happen, because there is no irregular surface to hang-up. There are two basic types, namely "Hinged and Fixed Mechanical splice installation tools are easily transported to the job site and offer splice installers versatility in installation methods. This splice is great in troughing applications where your belt is prone to premature finger popping issues as well as situations where buildup problems are present on your pulleys. The ALMEX Flexible Platen contours to the belt regardless of wear. Wider belts may take longer. Belting can be plowed or cleaned more efficiently. In addition, vulcanizing can be extremely difficult in areas that are not easily accessible. Secondly, the process requires a specific temperature, compression and equipment dwell time, in addition to a virtually moisture-free work area. We offer a variety of conveyor belt splicing options that create strong, long-lasting splices. Primarily used on thermoplastic belts. However, when all things are considered, mechanical fastening may be preferable. Full line of color-coded urethanes to match performance with application from the world leader in high-performance urethanes. Depending on belt width and thickness, most mechanical splices can be finished in less than one hour and are installed by an in-house crew with portable, easy-to-use installation tools. How to Choose Right Flex Auger Screw Conveyor Based on Your Application? The smooth seam also reduces wear on your conveyor system, creating longer lasting belts and ultimately lowering downtime caused by belt replacement. This result is a tight, strong flexible endless splice belt. Concerns about comparable vulcanized splice strength can also be dismissed: rivet-hinged fasteners have a long history of service on belts, with mechanical fastener ratings of up to 350kN/m or 2,000 pounds per inch of width (PIW). These strips are attached to the belt by staples, bolts or rivets. A fabric belt splice consists of two belt ends stepped down and held together by vulcanized rubber. Cold vulcanization does not employ a vulcanizing press, but instead uses a bonding agent that causes a chemical reaction to splice the two belt ends together. Additional product material leakage and loss can occur at the area of a metal fastener but not in a vulcanized splice. Also, if belts of different thicknesses must be joined, hinged fasteners can often satisfy this need by allowing two different fastener halves to be joined by a hinge pin acceptable to both. are connected and hinge around a central connecting shaft. For example, the hinged fastening system permits separate halves of the belt to be pre-spliced, requiring only the hinge pin to be inserted at the job site. A vulcanized joint allows the belt to wrap smaller pulleys than a metal fastener. With hot vulcanization, splices are heated and cured under pressure with a vulcanizing press. This process takes several hours. One problem with bolt-fastened solid-plate segment fasteners is that they typically use only two bolts on each plate, with one on each side of the splice. Vulcanization actually requires the shutdown of the belt for a substantial amount of time much longer than a mechanical splice would require. | BELT DAMAGE | Holes, punctures, open cut moisture penetration | No | No | The following are the two popular conveyor belt splicing methods in use today: Both these conveyor belt splicing methods involve several complicated steps, so they must be performed by a skilled worker. What is conveyor belt splicing and what are the conveyor belt splicing methods popular today? Accurate Industrial Home Office We use cookies to personalize content and analyze traffic. Ideal for foodor sanitary conveying applications, our seamless beltsplicing capabilitiescreatedurable and flexible endless belts. Opposing steps are fabricated in each end of the belt so they match up perfectly prior to bonding together. The double layer of fingers adds upward shear strength to the splice area. Endless conveyor belt splicing is a reliable method for conjoining belt ends to ensure maximum performance and longevity, with minimal noise. This allows the middle to crown, creating a wear point in the fastener and in belt cleaners or other systems that contact the belt as it moves on its path through the conveyor. Where gaseous, static or dusty conditions exist, the danger of sparking is eliminated. Machine Tapes / Power Transmission Conveyor Belting, Heavy Rubber Bulk Handling (Sand & Gravel). They can be installed without power tools, using a hammer to set the rivets and break off any heads above the belt. } Additional leakage leads to product loss, can contribute to additional build up on pulleys and create more belt maintenance work. The ends are shaped like matching ends of shallow steps. } }, Flexible Steel Lacing Company Because removing the hinge pin can easily separate hinged fasteners, these designs are essential in mining and quarrying applications where belts must frequently be removed, extended or shortened. Conveyor belt and belt splice damage will always be a fact of life in most bulk material handling applications. They can also be installed in a V-shaped pattern, which may be the only choice for using fasteners to join thick, high-tension belts designed for vulcanization. They combine top and bottom fastener plates, which are joined at one end by two wide hinge loops. The chief advantage of hinged fasteners is that the belt can be separated by removing the linking pin. When belts run-off due to misalignment or some other unforeseen reason, the odds are that a metal splice will hang-up and pull out, or hang-up and rip a strip off the side of your belt. var VERSION = parseInt(navigator.appVersion); Our technicians and engineers have been solving bulk material handling problems around the world for over 75 years and are available to provide expert advice and assistance on all of your bulk material handling questions and problems. You can vulcanize any time, anywhere. Some of the most common misconceptions include: Mechanical fasteners cannot be used with higher-tension belts (ie more than 800 PIW). While it is not a recommended practice to join belts of different thicknesses because of problems it can create, including sealing, tracking, and cleaning hinged loop fasteners would allow different thicknesses of belting to be combined using fasteners matched to their respective belt halves. | DOWNTIME | 1 TO 6 HOURS | 4 TO 8 HOURS | 4 TO 8 HOURS | The belt is then joined by passing a linking pin through the alternating hinge loops. With mechanical fasteners, sift-through of carried materials is a problem. What are the environmental factors that might affect the splice? Conveyor belt splicing, as simply defined, involves the process of joining two trimmed ends of a conveyor belt to regain overall belt performance and longevity. A steel cord splice consists of removing the cover on the two ends to be spliced, stripping the cables, overlapping them and vulcanizing them back together. The prime advantage of a vulcanized splice is that the hot vulcanized splice is nearly as strong as the belt itself, the splice results in longer belt life, and because of that, conveyor belt downtime is reduced. Conveyor belts have been around for decades and they are at the heart of material handling across industries such as quarries and mines, construction, manufacturing among others. The ropes are then cut to specific lengths and are meticuously overlapped to specified patterns.. Once the ropes have been placed in position, a filler compound is added and the covers are positioned. Each process requires unique tools and an intimate knowledge of the rubber bonding process. Riveted solid-plate fasteners are designed for the most demanding, highest-tension applications. Countersinking also strengthens the fastener-to-belt attachment by positioning the plates closer to the belts load-bearing carcass fibres. The. Finger splicing eliminates the need for a mechanical fastener, which reduces noise, eliminates catch points and product build-up, and allows for a clean, hygienic belt. Endless belt splicing bonds two belt ends together through heat and pressure creating a strong, smooth seam. Are workers up against time constraints? in diameter. Copyright 2022 Sparks Belting All Rights Reserved | Privacy Policy | Business Terms, Conveyor Belt Splicing: Endless Construction. To prevent leakage and sift-through, vulcanized belts are ideal. When vulcanizing, several factors must be considered to ensure a high-quality splice. This is a common conceyor belt splice for non-woven and nylon core belts as well as an alternate splice for thermoplastic and rubber belting. The rivets are installed in a staggered pattern to provide maximum resistance to pull-out and to distribute splice tension evenly across the width of the belt. Only clean, dry and relatively warm conditions are suitable for vulcanizing. Because vulcanized splices often require the consumption of 23m of belt length, conveyors may not have enough take-up if more than one splice is necessary over time. var NS = (navigator.appName == "Netscape"); var WebBrowser = ''; Conveyor belt splicing is normally required in 3 specific instances: There are two basic splicing categories namely: Vulcanised Splicing and Mechanical Splicing . This splice retains the highest percentage of the belt strength and is used in heavier applications. Being a critical component in heavy-duty industries, conveyor belts must perform optimally all the time without failure. stepping the covers and plies of the two ends of plied belting, so that the two halves form an interlocking link when brought together. The angle allows the splice area to maneuver the nose bar at different times to avoid high friction jams, which can result in burning of the belt, gearbox, or other conveyor components. Hinged fasteners are usually supplied in continuous strips to fit standard belt widths. This article first appeared in Quarry magazine, the official journal of the Institute of Quarrying Australia, and is reproduced here by kind permission. Finger over finger conveyor belt splicing is more reliable in polluted environments, v-guided belts and inside loading circumstances. There is enough downtime available to allow for a properly installed vulcanizedsplice. Vulcanizing actually robs the belt of an entire ply of strength even more if not done properly. Vulcanization does not compromise belt strength. As minimal downtime and maximum output has become a top priority for various manufacturers, and thus, maintenance of individual conveyor parts is of utmost importance. | STRENGTH | 50-80% | 80% | 80% | Finger splicing eliminates the need for a mechanical fastenerreducing noise, eliminating catch pointsand product build up,and allowing for a clean, hygienic belt. We also share information about your use of our site with our social media, advertising, and analytics partners who may combine it with other information that you've provided or that we have collected from your use of our services. Mechanical splices are formed by using special components "Belt Conveyors for Bulk Materials", "The joining up of two trimmed ends of a conveyor belt utilising a defined chemical or mechanical procedure.". In addition, hinged fasteners provide several installation benefits in these applications. Bolted solid-plate fasteners have some unique advantages. Often, operators are not even aware that a vulcanized splice is experiencing problems until it fails a catastrophic event that requires the immediate shutdown of theline. If mechanical splices are properly installed, maintained and countersunk by skiving the belt, there should be no problem with noise or damage to the belt or belt cleaners. For Finger Splices, plies are split or separated, fingers are cut and matched, and lap areas fused or thermo-welded together. In the event of a sudden overload or a plug-up somewhere on the system, it is not difficult to determine which type of splice is going to fail. First, an expert who is skilled and trained in the procedure and who has a thorough knowledge of solvents, bonding materials and other cover and fill materials must perform a vulcanized splice. The strips are fabricated so pieces can be snapped off to fit non-standard belt widths. Wears faster than the belt. The hinged systems consist of two interlocking halves, which Mechanical fasteners are available in two types hinged and solid plate and with a variety of attachment methods, including rivets, bolts and staples. There are several types of vulcanized splice, including stepped splices, finger splices and overlap splices, and two types of vulcanizing processes, hot and cold. However, all splices wear over time and nearly 80 percent of all conveyor belt failures are due to improper splicing. document.body.insertAdjacentHTML('beforeEnd', WebBrowser); Mark Colbourn is the managing director of Flexco Australia. Belt conveyors are one of the important material handling equipment, Buying a used belt conveyor system can be confusing. plate". Finger on a bias is used on applications that have nose bars present. Splicing the belt is necessary but can lead to carryback issues if not done properly. At Sparks Belting we can customize a truly endlessbelt solution for any of your conveying needs. If an unexpected splice is required, it is not necessary to wait for professional assistance. The first sign of wear comes too late for any preventative measure, resulting in longer downtime. A second type of mechanical splice is performed with plate fasteners. This is here, the importance of conveyor belt splicing arises. Please contact us for more information about our conveyor belt splicing options. 908 Jeffco Executive Drive Show Highlights, First published in the April 2018 issue of Quarry Management as Mechanical Splicing vs Vulcanizing. a) Fasteners: Mechanical fastening, on the other hand, does not compromise the beltsintegrity. Rivet-hinged fasteners can be used on belt thicknesses ranging from 3mm to 25mm with minimum pulley diameters of 230mm. Not only do the chemicals take several hours to cure, but a vulcanized splice is also at the mercy of the vulcanizers schedule. Each pair of plates sandwiches the belt end and is secured to the belt with a staggered pattern of rivets. They can be applied diagonally across the belt to allow use on pulleys that are smaller than the size recommended for the fastener. if (NS) { Our team is available 24/7/365 to answer any of your questions. It, A belt conveyor system is essential for the transportation of, Conveyors are commonly used in assemblies across manufacturing sector. To be on a safer side, procure such unused or a used surplus conveyor belt from a trusted source like JM industrial, who offers optimum quality used conveyor belts for material handling. Reduces one more maintenance job: the checking and repairing worn out metal splices. Sometimes, the complete conveyor system suffers from vibration and wear, in part due to those fasteners. If the belt is old, dirty or unevenly worn, vulcanization is not a good option because it will not always cure evenly, which can result in a weaker splice. The multi-point attachment on each side of the hinge provides the highest holding power of any mechanical fastener. If the splice is done properly, sift-through should not present a problem. Both hot and cold glue options are available for the skive splice. Self-curing repairs generally do not last. Lacing allows the belt ends to be connected and disconnected as opposed to an endless belt which is permanently spliced. Exhibitor Newsand | MATERIAL SIFT-THROUGH | Yes | No | No | Self-curing materials are not always suitable for splicing since tensions involved often exceed adhesion capability; A post-cure period of up to 24 hours can be required; a certain amount of technical skill is necessary. One of the issues with fasteners and/or lacings is that the entire load is thrown on a very small portion of the belt. Inspecting a vulcanized splice is easy. Consequently, operations and maintenance personnel should have a thorough understanding of the available splicing and repair alternatives, and how each method can affect the productivity and cost-effectiveness of operations. Bacteria build-up in the metal joint is eliminated where finished food product is being conveyed. Vulcanization does not mean a lot of downtime. This class of fastener makes a strong, durable joint with no hinge gap for fines. Understanding the pros and cons of each method is extremely important when making an educated decision on which splicing method to use.

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