Elscint - BLOG Area | Everything about vibratory bowl feeders

Elscint provides Auto Loading Feeding System for Bushes to a reputed Duplex Grinding Machine Manufacturer

by Monish Shete 23. June 2015 05:16

Elscint recently provided an auto loading feeding system to a reputed Duplex Grinding Machine manufacturer for feeding of bushes having dia 14 mm x 30 mm length to their duplex grinding machine. The bush ends were to be ground and hence the orientation required was “rolling”. The bushes used to come in axial direction in the bowl feeder and hence Elscint provided a special mechanism to ensure that the bushes stand up and then the same were twisted in a gravity chute to make them rolling. Proper poka yoke was provided to ensure that the components come only in the right direction. The scope of supply included, a stand to mount the vibratory bowl feeder, twisted gravity chute, noise enclosure, level control to provide indication about less parts in the bowl and a control panel with isolating transformer as the customer provided 3 Phase supply from their machine. Elscint not only supplied the equipment on time but also provided commissioning of the same at the customer’s factory. 

Elscint provides Auto Loading Feeding Systems for length shafts for a reputed Centreless Grinding Machine Manufacturer

by Monish Shete 14. June 2015 11:07

Elscint recently provided auto loading feeding systems to a reputed centerless grinding machine manufacturer for feeding of long length shafts for centreless grinding machines. The length of the shafts was                                                     between 95 mm to 120 mm but one side of the shaft was having a small chamfer which required orientation. As this orientation was not possible in a vibratory bowl feeder, Elscint recommended an Auto Loading Feeding System. The diameter of the shaft was between 8 mm to 12 mm. The equipment consisted of a pneumatic lifter unit and a belt conveyor for further feeding of the shafts to the grinding machine. The shafts had to be aligned and kept on an inclined table, from where a pneumatic cylinder singled them out and fed the shafts to a belt conveyor which further fed them to the centreless grinding machine. Proper synchronizing sensors ensured that the equipment worked without any manual intervention. Options provided included an X-Y adjustment of (+/-) 50 mm on either side, which is especially useful for wheel dressing. Height adjustment of (+/-) 50 mm too was provided to ensure that the feeding system was compatible for shafts of various diameters. The conveyor speed was kept variable by providing a VFD drive. Elscint supplied two similar systems to the Grinding Machine Manufacturer and even commissioned the systems by integrating the same with their machine at the works of the manufacturer proving the same in front of the end customer. You can watch the video of the Auto-Loading System for longer length shafts for Centreless Grinding Machines.



Innovative Usage of Vibratory Feeders – Elscint Vibratory Bowl Feeders to feed Threaded Plastic Plugs

by Monish Shete 6. June 2015 09:16

Elscint recently supplied a vibratory bowl feeder for three types of threaded plastic plugs. One side of the plug was open while one was closed. The requirement was to get the parts in open side facing ground orientation at a speed of 130 parts per minute. The end customer was in the USA and hence the requirement was for the equipment to run on 110 V / 60 Hz supply. Elscint provided 110 V / 60 Hz coils for this requirement on its Vibratory Bowl Feeder Model 400 HD. Additionally, a 850 mm long linear track mounted on a Elscint II HD linear vibrator was provided. The complete assembly was provided on a stainless steel base plate. All mounting plates were manufactured in SS 304. Further frequency controllers were provided for the vibratory bowl feeder and the linear vibrator for ease of operation. 

Innovative Usage of Vibratory Feeders - Elscint Vibratory Bowl Feeders to feed threaded stopper and hub cover

by Monish Shete 23. May 2015 06:35

Elscint has developed a lot of expertise in manufacturing vibratory bowl Feeders for blood bag components. The main requirement is for feeding of parts like the threaded stopper and hub cover, which go into the blood bag as well as saline bags. Orientation and feeding of the “threaded stopper” is quite easy but the “hub cover” is quite difficult to orient and secondly, getting the required speed / feed rate is a challenge. However, Elscint has developed a very modular design for its bowl which makes it easy to achieve various speeds. Speeds of upto 200 parts per minute are possible. Further, being medical parts, a medical grade bowl made of stainless steel with proper welding and polishing is required. In case of a recent order, the orientation required for both the parts was “rolling with pointed side towards bowl centre”. Additionally, Elscint provided a gravity chute with a sensor to ensure that the bowl feeder got switched off once the chute got full. The bowl feeders were supplied along with Frequency Controllers of suitable rating. 

Elscint Linear Vibrator with Silo for Ceramic Powder

by Monish Shete 11. May 2015 07:48

Elscint has developed a special linear vibrator for feeding of ceramic powder with a silo type arrangement. The ceramic powder had a tendency to bridge in the silo, being slightly moist. The tray was designed to ensure free flow of the powder. Linear Vibrator Model I with a tray having size 60 mm (width) x 400 mm (length). A 15 ltr. Silo was also provided. All the parts were fabricated in S.S. 316 L grade and even mounted on a S.S. 316 L grade plate. 

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Innovative Usage of Vibratory Bowl Feeders - Elscint Vibratory Bowl Feeder for feeding large inclined plastic caps

by Monish Shete 2. May 2015 08:43

Elscint recently supplied a vibratory bowl feeder for feeding of large inclined plastic caps. The caps were having a diameter of 35 mm. The height on one side was 50 mm while on other side, it was 43 mm. Due to this there was a tendency of the caps getting locked or falling down in the inclined gravity chute. The requirement was to feed the caps at a speed of 130 caps per minute in “open side down orientation”. Elscint used its Model 400 HD with a bowl diameter of approximately 800 mm for this purpose. Additionally, a gravity chute, mounting stand and a 125 ltr. extra capacity elevator feeder with a PU slat belt was provided. Usage of air was allowed and air was used to change the orientation from axial to standing with open side. The caps were then twisted in the bowl itself to make them all upside down (open side down). 

Innovative Usage of Vibratory Bowl Feeders - Vibratory Bowl Feeder for feeding various types and sizes of watch bases

by Monish Shete 25. April 2015 08:42

Elscint recently supplied a vibratory bowl feeder for feeding of various stainless steel watch bases for a major watch manufacturer. There were a total of 10 various sizes / dimensions comprising of 2 families of components. These also consisted of square and rectangular components. The requirement was to get them in a single row with the open side facing ground on a conveyor in lengthwise direction. Elscint provided a conical bowl with the least amount of changeover tooling to ensure operator ease. The changeover tooling too was made very easy with no adjustments and change parts were laser marked with the part number to make it easy for the operator to remember. Further, an extra capacity hopper having 50 ltr. capacity and a noise enclosure for the vibratory bowl feeder were also provided. The conveyor was provided with a variable drive with adjustable side guides. 

Innovative Usage of Vibratory Bowl Feeders - Elscint Vibratory Bowl Feeder for feeding two types of steel covers

by Monish Shete 19. April 2015 10:49

Elscint recently supplied a vibratory bowl feeder  for feeding of two steel parts in a single row. The part was very difficult to orient as there was a small tail on one side and no other difference. It was a “C” shaped part and the requirement was to get it in “open side facing sky with tail trailing”. There were two parts of same type but different sizes. Elscint removed the wrong parts by the use of a small air jet and then used machined outer chute to ensure that the orientation of the parts do not change afterwards during transfer to a linear vibratory track of 400 mm length. Elscint I linear vibrator was used for this purpose, again with a machine chute. A sensor was provided on the linear track to switch off the bowl feeder when the chute was full. Two separate tracks (orientation track in the bowl and the linear track were supplied for each of the components). The complete unit was supplied on a base plate to a special purpose machine builder.



Innovative Usage of Vibratory Bowl Feeders - Elscint Vibratory Bowl Feeder for feeding Ampoules in 12 rows

by Monish Shete 3. April 2015 05:15

Elscint recently supplied a special set of vibratory bowl feeders for feeding of glass in 12 rows. The speed or feed rate achieved was 75 Ampoules per minute per row in 12 rows. Two Elscint Model 630 vibratory bowl feeders were used for this purpose, each feeding 6 rows. The ampoules where oriented in base forward direction and outlets were provided in tubes. Stainless Steel flexible spring tubes were provided for each of the outlets. Elscint outer track bowls were fabricated in stainless steel. As the Ampoules were made of glass, there was a possibility of the Ampoules breaking while falling down in the bowl. Hence, Elscint provided FDA approved white colour Elscinthane PU coating for the bowl to ensure that even if they fall, there would not be any breakage. Additionally tooling was provided to reduce the fall of the Ampoules as they fall down. The bowls were pretty large in size (each one approximately 1200 mm in diameter). 

Innovative Usage of Vibratory Bowl Feeders - Auto feeding of Ceramic Rings for Centreless Grinding

by Monish Shete 22. March 2015 10:04

Elscint recently manufactured a supplied an auto feeding system for feeding of ceramic rings to a centerless grinding machine. The requirement was to feed 15 types of ceramic rings of various dimensions, right from diameter 20 mm to diameter 42 mm and thickness varying from 4 mm to 10 mm. The internal diameter too varied for the various rings, but mostly being 8 to 12 mm less that the outer diameter. For feeding to the customer’s centerless grinding machine, the rings were required to be fed axially. Due to the huge variety, to make the changeover between the rings easy, Elscint manufactured a special cylindrical design bowl made in stainless steel with separate changeover tooling for each of the rings. As the rings were having less thickness, there was a tendency of their toppling over. However, the tooling developed by Elscint ensured that this did not happen and the rings were fed in a stack to the grinding machine. Additionally, a linear vibrator with tubes was provided to accommodate different sizes of components for further feeding to the centreless grinding machine. This provided a constant pressure and push to the parts when they entered the grinding machine. The bowl was coated with Elscinthane PU coating, ensuring that the noise level was less by eliminating the contact between the bowl surface and the components. The complete system was mounted on a stand with an height adjustment of (+/-) 100 mm to ensure that the outlet tube can be aligned to the machine work-rest, whenever the ring size changes. 

About the author

Monish Shete is CEO of Elscint Automation, a 30 year old firm manufacturing vibratory bowl feeders and similar small part handing products. He personally has more than 25 years experience with last 15 years being with Elscint. This blog will help customers and laymen understand the intricacies of vibratory bowl feeders. One can find information about the finer aspects of vibratory bowl feeders which cannot be found anywhere else. Case studies and information about various innovative ways of feeding and orienting of different parts are given in this blog.