TECHNIQUE FOR AUTOMATIC SHARPENING OF CLEANING PAPER

CUTTING MACHINE

Related Art

The invention relates to maintenance of cutting blades of cleaning paper rollers (logs) slicing machines.

The invention particularly relates to grinding of blades of cleaning paper roller (log) slicing machine in series and sharpening thereof.

Background of the Invention

Cutting blade embodiments have been realized to slice cylindrical cleaning papers such as paper towels or toilet papers manufactured in long rollers (logs) in desired sizes for offer to end users. Grinding is needed to prevent porous cutting of slicing blade after a certain use thereof. Cutting blades are deformed or worn after certain use. Different embodiments have been developed to correct the tips of cutting blades in circular form and to provide former sharpness. Upon permanent use, cutting blades lose their sharpness after a certain time and slicing quality decreases.

The said assemblies are to be removed from the cutting blades where they are mounted to grind them, to conduct maintenance and mount them back thereon. Since the areas where cutting blades operate do not have adequate space on roller cutting machine for grinding without dismantling, it is the easiest maintenance method to dismantle of cutting blades. Rotary grinding assemblies located on the cutting machines are accompanied with use difficulties such as controlling, adjustment of grinding distance. The quality of sliced product differs due to maintenance of cutting blade made different sizes and time intervals each time. Irregular maintenance of cutting blades also decreases operation life of the cutting blades. Due to changing diameter sizes of grinding cutting blades after grinding, grinding discs located into the roller slicing machine are to be adjusted manually. Problems arise from permanent connection to electricity network of maintenance assembly conducting level adjustment following cutting blade of

which permanent grinding level change and contacting tip parts of the grinding, which causes danger for security of employees.

Purpose of the Invention

From the background of the related art, the purpose of this invention is to eliminate the existing disadvantages with the improvements made in grinding assembly grinding the cutting blades of the cleaning paper roller (log) slicing machines and re-sharpening them.

Another purpose of the invention is to provide standard grinding period. Thus, permanent product quality is provided. Operation life of the cutting blade is increased.

Another purpose of the invention is to provide permanent fixed levels of edge distances of the cutting blades to be ground. Thus, grinding of cutting blade at standard manner is provided.

In order to achieve the said purposes, improvements have been realized in cutting blade grinding assemblies comprising at least one cutting blade sharpening cutting blades of cleaning paper rollers (log) slicing machines by means of grinding and at least one back grinding disc in circular form grinding and sharpening the said cutting blade and at least one pre-grinding disc and support body supporting the said grinding discs.

A preferred application of the invention comprises at least one detector to fix the edge of the cutting blade of the said grinding disc to be ground, which is connected to the said support body, is located in a position detecting the edges of cutting blade and drives the grinding discs when the said cutting blade is detected, and connected to grinding discs in such manner. Thus, automatic level adjustment with the detector is provided.

In a preferred application of the invention, the said grinding discs provide grinding of cutting blade at any position without support of any user manually, wherein it presses the back grinding disc towards cutting blade upon a command from the

said detector by means of at least one back pusher connected to back grinding disc.

A preferred application of the invention comprises at least one pre pusher disc where it presses pre grinding disc towards cutting blade upon command from the said detector, is connected to back grinding disc so as to provide automatic grinding of the cutting blade of the said grinding discs without support from any user outside manually. Thus, pressing and pulling of blade by grinding system is provided by air. Thus, problem of transformation of electric and air to moving parts is solved. And pressing need is obviated by means of electric line connected to grinding assembly in moving position.

In a preferred application of the invention, the said back grinding disc grinds the cutting blade of the said back grinding disc from back edge tips.

In a preferred application of the invention, the said pre grinding disc grinds the cutting blade from front edge tips.

In a preferred application of the invention, the said grinding discs preferably move symmetrically and grinds the front and back surfaces of the cutting blade at the same time.

In a preferred application of the invention, preferably cutting machine pauses the cutting operation after a determined turning tour of the cutting blade with a program attached to the control unit and provides driving of detector and grinding discs for conduct of grinding operation. Thus, operation life of the blade is increased by means of regular grinding. Regular grinding of the blade increases product quality. Thus size standard of sliced product is provided.

In a preferred application of the invention, at least one regulator connected to the said pushers is formed so that the grinding discs are pushed and pulled back with the command from detectors by the said pushers and compressed air and vacuum needed by the said pushers is provided. In a preferred application of the invention, the said pushers and regulator are preferably components operated with pneumatic technique.

In a preferred application of the invention, when diameter of the said cutting blade varies, to adjust the horizontal axis position of the grinding discs, at least one worm gear providing up-down movements of the said support body has been formed by means of threads made in the said support body. Thus, orientation required in pneumatic use of the grinding system with worm gears is provided. Thus, instead of one single movement double direction movement has been provided when required.

A preferred application of the invention consists of at least one traveling engine commanding the said worm gear, determining the rotation direction of the worm gear as per command of the said sensor in order that the said worm gear rotates and travels the support body up and down when required.

A preferred application of the invention consists of at least one progress reducer connected to the said worm gear, providing rotation with the driving from the said traveling engine in order that the said worm gear rotates and moves the support body up and down when required.

Description of the Figures

Figure-1 ; front view of the cutting blade grinding assembly of the cleaning paper roller (log) in a representative application of the invention.

Figure-2; side view of the cutting blade grinding assembly of the cleaning paper roller (log) in a representative application of the invention.

Figure-3; upper view of the cutting blade grinding assembly of cleaning paper roller (log) in a representative application of the invention.

Reference Numbers

1 Cutting blade 6.2 Front pusher

2 Electrical engine 7 Progress reducer

3 Blade diameter 8 Traveling engine

4 Support body 9 Rotary power supply

4.1 Back grinding disc 10 Worm gear

4.2 Front grinding disc 11 Copper plate

5 Sensor 12 Support body

6 Regulator 13 Electrical transfer brushes

6.1 Back pusher

Detailed Description of the Invention

The application of the invention indicated in the figures is cutting blade grinding assembly of the cleaning paper roller (log). In Figure-1 the sensor (5) connected to grinding discs (4.1 , 4.2) in a manner providing travel of grinding discs (4.1 , 4.2) when it senses cutting blade (1) located in a position sensing the edges of cutting blade and connected to support body (4) provides grinding of cutting blade (1) when grinding discs (4.1 , 4.2) detects edges of cutting blade (1) to be ground.

A back pusher (6.1 ) connected to back grinding disc (4.1 ), pressing back grinding disc (4.1) towards cutting blade (1 ) with the command from the sensor (5) indicated in figure-3 provides automatic grinding of cutting blade (1) grinding discs (4.1 , 4.2) at any point without any support from any user.

The front pusher (6.2) connected to back grinding disc (4.1) pressing front grinding disc (4.2) towards to cutting blade (1) with the command from sensor (5) provides automatic grinding of the cutting blade (1) by grinding discs (4.1 , 4.2) without support of end user at any point.

Grinding discs (4.1 , 4.2) can be adjustable along Y and Z axis indicated in figure-2 and figure-3. The angles should preferably be θy = 7° and θz = 1°. During grinding, back grinding disc (4.a) touches cutting blade (1) on axis E as seen in figure 3 with driving of back grinding disc (4.a) via back pusher (6.1). Accordingly front grinding disc (4.2) touches cutting blade (1 ) in axis E direction via front pusher (6.2). Touching force of grinding discs (4.1 , 4.2) can be adjusted by the

regulator (6) seen in figure 2. Pushers (6.1. , 6.2) and regulator (6) preferably are components operated by pneumatic technique. Pushers (6.1 , 6.2) and regulator (6) can also be of components operated with preferably hydraulic technique.

Back grinding disc (4.1) grinds cutting blade (1) from back edge terminals. Accordingly, front grinding disc (4.2) grinds cutting blade (1 ) from front edge terminals. Grinding discs (4.1 , 4.2) moves preferably in symmetric and grind front and back surface of the cutting blade (1 ) at the same time.

Thanks a program uploaded into the control unit in grinding assembly when required, cutting operation can be paused after certain rotating tours of cutting blade (2) and operation of sensor (5) and grinding discs (4.1 , 4.2) is provided for performance of grinding operation.

The pushers (6.1 , 6.2) push and pull back the grinding discs (4.1 ,4.2) with the command from sensor (5) taken by pushers (6.1 , 6.2) by use of regulator (6) connected to pushers (6.6, 6.2) providing compressed air and vacuum needed by pushers (6.1 , 6.2) indicated in figure-2.

Vertical axis position of grinding discs (4.1 , 4.2) can be adjusted when diameter of cutting blade (1) changes with help of worm gear (10) causing motion of support body (4) passing through support body (4) via threads drilled into support body (4) providing up-down movement of support body (4) shown in figure-1.

A traveling engine (8) controlling worm gear (10) indicated in figure 2, determining rotation direction of worm gear (10) according to the command of the sensor (5) provides up-down movement of support body (4) by means of rotation of the worm gear (10) when required.

A progress reducer (7) connected to worm gear (10), providing rotation with the driving from the said traveling engine (8) provides up-down movement of support body (4) by means of rotation of worm gear (10) when required.

As long as the cutting blade (1) indicated in figure 1 is ground, circle blade diameter (3) decreases and grinding discs (4.1 , 4.2) stay away from cutting blade (1 ). In order to keep the cutting blade (1) at the same position for grinding, the

circle blade diameter (3) should progress in the same amount of decreasing. Sensor (5) enables support body (4) to follow circle blade diameter (3). When cutting blade (1 ) decreases, it leaves the sensor (5). When sensor (5) does not detect cutting blade (1), it preferably commands the DC traveling engine (8) to turn. After traveling engine (8) drives progress reducer (7), worm gear (10) moves. Upon turn of the worm gear (10), support body (4) which has grinding discs (4.1 , 4.2) moves along X axis and thus automatic grinding is performed.

The cutting blade (1) indicated in figure 1 is rotated at fixed recycle by AC engine (2). Cutting blade (1 ) operates on support body (12). Support body (12) rotates around its axis. The power needed for movements on support body (12) is supplied by means of contact of electric transmission brushes (13) on the back side of the body by means of rotary power supply (9) indicated in figure 2 with copper plates (11) in circle form.

The invention cannot be limited to the representative applications given in this section. Alternative embodiments to be developed by persons skilled in the related art based on basic factors under scope of protection stated under claims shall mean violation of the invention.