Technical Field

The present invention relates to an improvement made in movable belt conveyor of deburring machines, which are used in the metalworking industry and also for cleaning undesired surface residues such as rust (corrosion), welding slag, cutting and boring edge burrs occurring on the metal piece to be worked.

The present invention particularly relates to a magnetic retainer unit allowing for completely cleaning the surfaces of workpieces by preventing the movement of the workpieces during cleaning the surfaces of the workpieces in deburring machines and positioned, such that it allows for the movement of the belt conveyor conveying the workpieces.

State of the Art

Since the surface treatment is performed while the piece worked in deburring machines is advanced on the belt conveyor, it is required to advance forwards to provide space for other pieces to be loaded on the belt conveyor subsequent to the piece being worked and to be retained on the belt surface, such that it does not constitute any danger for both work and worker safety. Vacuum units are generally employed to fasten the workpiece on the belt. Since the vacuum units retain the piece on the belt by sucking air, the belt should have a special perforated structure that allows for air passage. Since the metallic wastes fill in the pores during the working process in such belts, it damages both the machine and operator, thereby leading to an unsafe working environment. Since the perforated belts have a shorter life compared to the alternatives, the replacement intervals are shorter compared to the alternatives. Furthermore, the fact that additional elements, namely air compressor for vacuum suction units, that constitutes further costs and consumes further energy due to continuous operation exits on the machine, are not economical in terms of both manufacturing cost and operation cost.

In some machines employed for various purposes, it is tried to form a magnetic field by using an unmovable stable magnet so as to retain the metal pieces stable. In such applications, it is considered that it is not possible to determine the magnetic field force and to implement it efficiently. Since the determined magnetic field force is at a sufficient level to retain the small workpieces in safety, the same force is significantly excessive to fasten the greater workpieces. This force fastens the workpiece on the conveyor by hindering the advancement thereof together with the belt when evaluating the mass and weight of the greater piece. Furthermore, if the magnetic-loaded piece remains stable on the conveyor, the operator should perform the saving task of the workpiece from the magnetic field, which is a dangerous and exhausting process. If the force is designed, such that it does not affect the movement of the greater workpieces on the belt, the workpieces must be subjected to the multiple working processes, thereby causing time losses and additional costs, because the retaining capability will be reduced on the small workpieces and the cleaning process will be not performed efficiently.

In the patent application 2003/02209 in the state of the art, it is stated that "the present invention relates to a vacuum and roller-feeding units of packaging machines used in corrugated cardboard plastic, tinplate, etc. sectors and performing the pressing and cutting processes in the packaging machines, characterized in that it is comprised of a vacuum fan (9) powered bu the vacuum motor (10), a vacuum pipe (8) connected to the vacuum fan, vacuum pan (4) and vacuum upper sheet metal in a suitable form for the roller (5) profile, cam (11) suitable for mating gears (14-15) and joint (16) profile driven by the machine driving gear and a reciprocating cardboard cutting piston (20)".

As can be seen, there are multiple additional elements such as a belt system comprising a vacuum tank, vacuum pump, and vacuum holes in the vacuum systems. The fact that there is a plurality of mechanical elements both causes failures in the machine performing the industrial production in long term and increases the initial installation costs.

As a result, due to the aforementioned drawbacks and insufficiency of the existing solutions regarding the subject matter, the need for a study in a magnetic retainer unit in deburring machines has arisen.

Objects of the Invention

The invention is created by being inspired by the present situations and aims to solve the problems mentioned above.

The main object of the present invention is to provide a magnetic retainer unit comprising a magnet for keeping the metallic workpieces stable, of which surfaces are cleaned through the deburring machines and for moving without taking any additional load, except for the weight on the conveyor belt carrying the workpiece. Another object of the present invention is to allow for cleaning multiple workpieces simultaneously by being positioned on the belt, such that intervals of multiple workpieces are minimized, by means of keeping the workpieces with various sizes stable on the belt.

Another object of the present invention is that it is possible to retain the small workpieces on the conveyor in a secured manner by means of the magnetic piece retainer unit used in deburring machines, while the small workpieces advance forwards and further the greater workpieces advance on the belt.

Another object of the present invention is to prevent consuming additional energy by facilitating the conveyor belt movement.

Another object of the present invention is to avoid further costs by eliminating the need for additional equipment such as compressors and the charging unit used in the vacuum units.

Another object of the present invention is to prevent the metallic piece from remaining on the belt by means of using a conveyor belt comprising no air passage holes and thereby to ensure a safe working environment.

The structural and distinctive characteristics and all advantages of the invention will be better understood with the figures below and the detailed description written by referring to these figures and therefore, the invention should be evaluated considering these figures and the detailed explanations.

Figures for a Better Understanding of the Invention

FIGURE 1 illustrates a perspective detailed view of the inventive magnetic retainer unit for the deburring machine.

FIGURE 2 illustrates a front view in the active (open) position of the inventive magnetic retainer unit for the deburring machine.

FIGURE 3 illustrates a front view in the passive (closed) position of the inventive magnetic retainer unit for the deburring machine.

Description of Component References

A. MAGNETIC RETAINER UNIT 1. Driver connection element

2. Directing element

3. Lever arm

4. Main connection arm

5. Magnetic group

6. Conveyor belt

7. Driver arm

It is not necessary to scale the drawings and the details which are not necessary for a better understanding of the invention may be omitted. Additionally, the elements which are at least substantially identical or at least substantially have identical functions are shown with the same reference number.

Detailed Description of the Invention

The present invention relates to a magnetic retainer unit (A) which meets all the requirements mentioned above, eliminates all the disadvantages, and offers some other advantages.

In this detailed description, preferred embodiments of the magnetic retainer unit (A) subject to the invention are described only for a better understanding of the subject.

Figure 1 illustrates a perspective detailed view of the inventive magnetic retainer unit (A) for the deburring machine. Main elements of the inventive magnetic retainer unit (A) may be listed in the following: a directing element (2) providing a driving force for the movement of the magnetic retainer unit (A) between active (open) and passive (closed) positions, a driver connection element (1) for fastening said directing element (2) on the machine body, a lever arm (3) for transferring the movement received from the direction to the main connection arm

(4), the main connection arm (4) being a carrier body element, on which the magnetic group

(5) is available, a magnetic group (5) for fastening the work piece while moving on the conveyor belt (6), a conveyor belt (6), through which the work piece is fed to the machine, on which the work piece advances and through which the work piece is output from the machine and also which functions as the working table and a driver arm (7) transferring the driving force provided by the directing element (2) to the lever arm (3). Figure 2 illustrates a front view in the active (open) position of the inventive magnetic retainer unit (A) for the deburring machine. While the magnetic retainer unit (A) is at the active position, it arises towards the conveyor belt (6) body and applies magnetic attraction to the workpiece.

Figure 3 illustrates a front view in the passive (closed) position of the inventive magnetic retainer unit (A) for the deburring machine. While the magnetic retainer unit (A) is at the passive position, it moves away from the conveyor belt (6) body and reduces the magnetic attraction applied to the workpiece.

Operation Principle

While the workpieces move on the conveyor belt (6), it is required to retain the metallic workpieces on the conveyor belt (6). When the magnetic retainer unit (A) is activated, it approaches the belt (6) and applies the attraction force to the workpiece by means of the magnetic group (5) thereon. When the magnetic group (5) is at the closest position to the workpiece, it completely retains the base. The magnetic retainer unit (A) may be held at any position between the entirely open and entirely closed positions. The average weight may be measured on the conveyor belt (6) and the necessary attraction force may be automatically calculated and thus it may be ensured that the conveyor belt (6) moves without being subjected to the resistance by selecting the distance to which the value force appropriate to the workpiece will be applied. In the deburring machine, the workpiece is placed through the product feeding portion of the conveyor belt (6) and the workpiece enters the piece surface working section of the machine from the product input portion. In the deburring process, while the workpiece advances on the conveyor belt (6), the process is performed by the head group with a sandpaper surface that comprises sandpapers rotating at its axis in the horizontal direction and rotating at the main axis in the vertical direction by being driven by the electric motor thereon and has a linear movement by being driven an electric motor in the vertical direction based on the workpiece thickness. There is a magnetic group (6) featured with a neodymium magnet placed immediately under the conveyor band (6) in the area corresponding to the piece working portion of the conveyor band (6). Said magnetic group (5) is driven by the directing element (2) fastened to the frame with a driver connection element (1) so as to position the magnetic group (5), such that it applies the proper force based on the workpiece size. Said driver connection element (A) transfers the driving force to the lever arm (3) as a rotation by means of the driver arm (7) and the carrier main connection arm (4) to which the lever arm (3) is connected lifts all magnetic groups (5) and achieves the desired active position. Said magnetic group is positioned in the upper level, such that it is at the closest distance to the conveyor belt (6), so as to retain particularly the small workpieces. While working on the small workpieces, the magnetic group (5) maintains its closest position to the conveyor belt (6). While working with greater workpieces, the magnetic attraction force is reduced by bringing a lower passive position by a directing element (2) with an automatic instruction, optionally manual, by means of processing the data received from the sensors calculating the average weight, thereby eliminating the movement restriction of the workpiece on the conveyor belt (6). If it is desired to perform a deburring process on a small workpiece again, the magnetic retainer unit (A) is driven by a directing element (2), and the magnetic group (A) is brought to the active upper position, thereby achieving the closest position to the conveyor belt (6).