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Elscint - BLOG Area | Everything about vibratory bowl feeders

Innovative Usage of Vibratory Bowl Feeders – Bowl Feeder for stacking of metal parts

by Monish Shete 12. July 2014 06:49

Elscint recently supplied a special vibratory bowl feeder for stacking of metal parts having dimensions 25 mm x 27 mm x 4 mm thickness. There was a chamfer on one side which needed to be always on one side, making the orientation complicated. Elscint used a Model 400 double start conical bowl for this purpose. The parts were oriented and fed into a gravity chute and thereafter, they were stacked by pushing them onto a 500 mm long track with a pneumatic cylinder. Elscint provided sensors at various positions to ensure proper synchronization. The equipment was meant to work on 110 V/ 60 Hz input supply as it was exported to the USA. The speed required was high and hence Elscint fabricated a double start bowl and then converged both the tracks into a single one giving a single output with high speed. The position of the final stack was also different from the way the parts were oriented in the bowl and hence the part orientation was changed in the bowl before they moved onto the gravity track. The bowl was coated with Elscinthane PU coating for two reasons, firstly to reduce the noise level by eliminating the metal to metal contact between the bowl and the components and secondly, to ensure that the plating on the parts does not get damaged due to constant movement on the surface of the bowl. Elscint used Model 400 HD vibratory drive with a stainless steel conical design double start bowl for this application. Further a Frequency Controller was provided to ensure that any change in input frequency or voltage does not affect the output. You can watch the video of this bowl feeder for stacking of the metal parts

Innovative Usage of Vibratory Bowl Feeders - Feeding of long parts

by Monish Shete 6. July 2014 10:31

Elscint recently completed an order for feeding of components related to the stationary industry. One part was for feeding of “compressor bar”, which is used in box files. The requirement was to get these parts which were having length of 130 mm x 18 mm width in lengthwise position with “face orientation” ensuring that the plastic lock was always at the top. The customer also wanted to eliminate the parts where the parts were “locked” i.e. the lock was down. When the parts were “locked”, the height of the part with face up and face down was same, leading to difficulty in eliminating the same. However, Elscint provided a special type of tooling to ensure that the “locked” parts too get eliminated. Elscint used it Model 400 with a stainless steel step type bowl with Elscinthane PU coating for this purpose. A speed of 50 parts per minute was achieved. You can watch the video of this equipment.

Innovative Usage of Vibratory Bowl Feeders – Feeding of rivets in 4 rows

by Monish Shete 22. June 2014 08:15

Elscint recently completed an order for feeding of components related to the stationary industry. One set was for rivets having head dia 9.5 mm x 9 mm ht. which needed to be fed in orientation of “head down”. The requirement was for 4 outlets with a speed of 60 parts per minute per outlet. Hence, Elscint supplied two bowl feeders, each with two outlets and a single 4 track linear vibrator for feeding these in a total of 4 tracks. Both the bowl feeders were mounted on a single base plate making it easy for the customer to integrate the same with his machine. Overflow provision i.e. ensuring that in case any of the tracks is stopped, the balance rivets fall back into the bowl, was ensured in case of each of the four rows. The bowls were coating with Elscinthane PU coating to ensure the noise level was less and additionally diminishing the chances of any damage or discolouring of the rivets due to continuous movement on the metallic surface of the bowl. Elscint could achieve a speed in excess of 250 rivets per minute per row. There being sensors on the linear track to switch off the bowl feeder, the excess speed was automatically adjusted with the customer’s machine. The bowl too was designed in such a way that 10 kgs of rivets could be accommodate in the bowl at any given time. You can watch the video of this equipment.

 

 

Innovative Feeding Techniques - Vibratory Counting & Dispensing System for Ear Plugs

by Monish Shete 10. June 2014 06:17

Elscint recently manufactured a counting & dispensing system for ear plugs. The requirement was to count and dispense 12 ear plugs at a time (12 times a minute). These 12 ear plugs had to be packed in a single box. Presently this was done manually and resulted in mistakes on the part of the operator whereby either short or extra ear plugs were packed. To resolve this problem, Elscint offered a vibratory counting and dispensing system. In this equipment a set number of ear plugs are always dispensed on pressing of a foot switch. Additionally, dispensing can also be activated by sensing the hand of the operator as soon as he puts his hand to collect the ear plugs. This ensures the operator gets the required number of ear plugs for packing. The chances of mistakes by wrong counting of the ear plugs is eliminated as he gets the required number of ear plugs in his hand and further dispensing does not take place unless all these ear plugs are packed. This system is very useful for all such types of packing requirements. The equipment comes along with a stand, dispensing chute with bin, electrical and pneumatic controls. There is an additional sensor on the dispensing chute which switches off the vibratory feeder when the chute is full. This ensures that in case the operator is not around or the packing line is not working due to some reason, the operator does not have to switch off the entire system. Once he presses the foot pedal / button / places his hand for collection, the cycle commences once again automatically. Poka yoke too is provided to ensure that even in case where there are less or no ear plugs to dispense, the dispensing does not take place even after pressing the foot pedal / button / hand signal. The number of ear plugs which need to be dispensed in one lot can be changed by the operator, in case the requirement changes in the future. You can watch the video of this equipment.

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Innovative Usage of Vibratory Bowl Feeders - Elscint Vibratory Bowl Feeder for condoms

by Monish Shete 3. June 2014 05:25

Elscint recently supplied a special vibratory bowl feeder for feeding of condoms in 4 rows. The speed or feed rate achieved was 75 condoms per minute per row in 4 rows. Elscint Model 630 is used for this purpose. Further a one meter long four track linear vibrator (Model Elscint IV) was used to convey the condoms forward. The major problem with condoms is that they are rubbery and lubricated, making them slippery. This results in the speed being very less as the friction between the condoms and the bowl track is reduced, which does not allow them to move forward properly. However, Elscint provided a special type of bowl made of stainless steel for this purpose. Full welding was done at all areas to ensure that there were no crevices for dust accumulation. Another important point is that the mounting of the bowl has to be from outside to ensure that dust does not get accumulated in holes made for the screws required for bowl fixing. Hence, Elscint ensured the mounting was on the outer side on 12 screws. There being 4 outlets, proper overflow of parts was required and this too was taken care off.  The condoms being in various shapes, another possibility is that of overlapping and jamming. However, Elscint has perfected appropriate tooling for this type of bowl which eliminates this problem totally. Thus the feeding is very smooth without any overlapping or jamming. The fabricated bowl was having a diameter of more than 1300 mm. You can watch the video of this bowl feeder for feeding of condoms..

 

 

Innovative Usage of Vibratory Bowl Feeders – Elscint “Chain Plate” Vision & Stacking Machine

by Monish Shete 23. May 2014 03:46

Elscint has developed an automatic stacking & indexing machine for stacking of Chain plates. Various sizes of plates can be stacked in the same machine with some changeover tooling. Chain Plates are having two holes and forks were provided to engage both the holes while stacking. The plates were having a particular number and brand marking only on one side. Elscint utilized a vision camera to check the marking and ensuring that the plates with marking on the top were stacked in one fork while the ones with the marking at the bottom were stacked in another fork.

 The equipment was designed for accommodating Chain Plates having size 45 mm length x 20 mm width to plates having size 26 mm length x 10 mm width. This was done by providing proper changeover tooling. The equipment consisted of a Model 400 vibratory bowl feeder (having capacity of 30 kgs), a motorized belt conveyor on which the vision camera was mounted, sorting mechanism and stacking forks mounted on an indexing table. In the vibratory bowl feeder, the chains were oriented in lengthwise direction and were further taken forward on a motorized belt conveyor. The vision camera mounted on the same checked whether the marking was on the top or at the bottom. The ones where the marking was on the top, were pushed into a separate track and stacked onto one set of forks while the ones with the marking at the bottom were taken forward and stacked in another set of forks. In case, any of these forks got full, the conveyor would stop and indexing used to take place. After indexing, the next set of forks would come the stacking position and filling of plates in the forks would restart. The complete equipment was mounted on a single table and controlled by a PLC with the controls provided through a separate MMI. Some plates were having no marking on either side or marking on both the sides. Such plates were pushed into alternate forks. This changeover was done through the MMI, thus requiring minimal operator intervention. The indexing table accommodated 8 sets of forks, thus ensuring the time between loading and removal of plates by the operator was correctly matched with the other equipment in the factory of the customer.

 The advantage of this equipment is to eliminate the need of manually checking which side of the plate the marking is present and to stack the plates in a fork for further assembly operation. With the help of this equipment, the plate stacking can be made an off line activity with the forked plates readily available for usage as an when required. Similarly any component having a hole in it like a bearing ring, cage, o-ring, washer etc can be stacked in this machine. You can watch the video of this equipment

Innovative Usage of Vibratory Bowl Feeders – Elscint Vibratory Bowl Feeder for feeding Camphor Tablets

by Monish Shete 11. May 2014 09:06

Elscint recently manufactured 3 sets of Vibratory Bowl Feeders (one set consisting of two Vibratory Bowl Feeders, one in clockwise and one in anti-clockwise direction) and one linear vibrator) for feeding of two types of camphor tablets. One tablet size was 16 x 16 x 4 mm thick while the other was 12 x 12 x 3 mm thick. The 16 x 16 mm tablet was fed in a total of 7 rows (the clockwise bowl feeder was having 4 outlets while the anti-clockwise one had 3 outlets). The 12 x 12 mm tablet was fed in 6 rows (3 each from each of the Vibratory Bowl Feeders). The requirement was to feed and converge the tablets into a block of 6 or 7, as required. This block then went onto a conveyor for further packing. The speed or feed rate required was 120 tablets per minute for the 16 x 16 mm tablets and 250 tablets per row per minute for the 12 x 12 mm tablets. Elscint achieved a speed of 200 tablets per row per minute for the 16 x 16 mm tablets and 400 tablets per minute per row for the 12 x 12 mm tablets, which was much above the required speed. The linear track was made of stainless steel and machined on a CNC machine as the accuracy required was very high. The reason being that any mistake in the same would result in the tablets jamming (in case of less width) and toppling (in case of excess width). There being no cut-off, the Vibratory Bowl Feeders and linear vibrator had to work continuously, thus requiring proper overflow for all the tracks. Another problem was that along with the tablets, bits and pieces of broken tablets were present. Elscint provided small holes and cut-outs in the track to ensure that all such broken or half tablets would fall down and separate bins were provided to collect the same. For easy cleaning of th     e complete equipment, the bowls were fabricated from stainless steel and even the mounting table was provided with stainless steel cladding. A single control unit with poka-yoke was provided to ensure that the customer’s operators do not make any mistake while connecting the same. You can watch the video of this equipment

Innovative Usage of Vibratory Bowl Feeder – Elscint Vibratory Bowl Feeder for feeding Plastic Bottles

by Monish Shete 5. May 2014 05:37

Elscint recently manufactured a bowl feeder for feeding of small plastic bottles having diameter 21 mm x 48 mm length with one side closed and one side open. The requirement was to get the bottles in closed side facing sky orientation. The dimensions of the bottle were such that the bottles moved in the bowl feeder in axial or lengthwise direction. Hence, Elscint employed certain tooling to ensure that the bottles got into the required orientation. Thereafter, proper tooling was employed to make the bottles with the open side facing sky fall back into the bowl. A speed of 80 bottles per minute was achieved very easily. The bottles were used for storing homeopathic tablets and hence a stainless steel medical grade bowl was used for this purpose. You can watch the video of the Elscint Bowl feeder for feeding the plastic bottles.

 

Innovative Usage of Vibratory Bowl Feeder - Vibratory Bowl Feeder for feeding Hooks

by Monish Shete 25. April 2014 06:19

Elscint recently supplied a special vibratory bowl feeder for feeding of metal hooks. The hooks were having tail lengths ranging from 70 mm to 180 mm and radius of 30 mm. Elscint provided a vibratory bowl feeder for feeding of all these sizes in the same bowl without any changeover tooling or adjustment. Elscint designed a special type of tooling which ensured that all these sizes could be accommodated in a single bowl feeder and a speed of 70 parts per minute was achieved. A special type of bowl made from stainless steel was used and it was PU coated with Elscinthane PU coating. This increased not only the life of the bowl but also improved the performance drastically. Further, the hooks having a very small wire diameter, it was important that they do not get stopped due to welding spots. Hence, the welding had to be seamless and Elscinthane coating further eliminated this possibility, in addition to reducing the noise level of the bowl by eliminating the metal to metal contact between the bowl and the hooks. A Linear vibrator having a slight inclination was also provided which conveyed the hooks from the bowl feeder to the next operation. Once, the linear track was full, the vibrator used to automatically switch off and switch on again once the track became part empty. The tooling as well as the chute was made in stainless steel.

 

 

Innovative Usage of Vibratory Bowl Feeder - Vibratory Bowl Feeders to feed port cap & Slip Ring

by Monish Shete 11. April 2014 04:34

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 port cap and slip ring, which go into the blood bag as well as saline bags. Orientation and feeding of the port cap is difficult due to the fact that they part is flexible and can turn or twist in any direction. Similarly, the slip ring too is flexible and extremely small. Further, there are various types of slip rings (six of them in this case). This makes it 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 high speed. Further, being medical parts, a medical grade bowl made of stainless steel with proper welding and polishing is required. Along with this, Elscint provides a European make controller for controlling the speed of the vibratory feeder. Frequency as well as voltage controllers can be provided as per the customer specifications.  

About the author

Monish Shete is CEO of Elscint Automation, a 25 year old firm manufacturing vibratory bowl feeders and similar small part handing products. He personally has more than 18 years experience with last 10 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.