DE8426106U1 - One-piece shaped eccentric disc for holding Velcro or self-adhesive grinding discs with exchangeable wear ring and suction - Google Patents

Description

j Utility model auxiliary message

<Applicant: Hans J. Fabritius, 44oo Münster

'· Paul-Klee-Weg 57

One-piece shaped eccentric disc to hold Velcro or self-adhesive grinding discs

with replaceable wear ring and suction.

Backing pad for orbital sanding machines with suction channels

for suction of the grinding dust during the grinding process

Up until now, \ gangs have been produced using a carrier plate

made of metal or plastic, which holds the male thread for the Includes suction and drive machine, with plastic

Z foam or sponge rubber is stuck, or umt angesch ^

% ■ is where the suction holes or cannula are located

% and then the holder for the sandpaper, entvede

; ■ Velcro or an adhesive surface made of fabric or plastic,

is glued to the foam.

This cumbersome procedure is wage-intensive in terms of costs and disadvantageous for the cohesion of the Glue points, because according to the current state of the art, carrier plates, foam and Velcro are made up of different ones Materials that require expensive special adhesives to be bonded together. The high door no v / calibrates the adhesive, whereby the shear strength is severely limited.

j Optionally, the carrier plates can also be foamed. To a

To achieve animal shear strength, the foam is then shaped around the edge of the plate and foamed into a groove o3 elevation on the edge. In this case, the foam sheet often warps, which should, however, be expediently flat. Z ± e reject rate is considerable. On the other hand, the speed of the plate is considerably limited in this valley, since the anhr.

The material is torn at the edge. With a diameter de

Plates of 150 mm can be those desired by the industry Speeds of θοοο upm cannot be used without risk Machines on the market, however, idle up to 150,000 rpm. ti

Another disadvantage of this plate is the high mismatch at the point where the aluminum suction cup lies on the plate. The extracted material consists of aggressive abrasive material, -'ie corundum etc, and twisted between the plate and the suction bell, where there is a squint effect ._Sis limited

! the service life of the plate additionally from the back

■ '■ ^te ·

Application for a patent with simultaneous utility model notification.

Applicant: Hans J. Fabritius, 44oo Münster, Paul-Kles-V7eg57 The following innovations are proposed :

1. The plate to be foamed is provided with claws or pins on the bottom, in which the foam sticks. This creates an extremely high shear strength. Also, the foam no longer has to be led around the plate, which avoids the warping resulting from tension. The plate is flat.

2. The Velcro material or, in the case of self-adhesive discs, the support line is pretreated in such a way that it forms a firm connection with the foam. The plate and carrier material are then foamed in one piece with one another in one operation.

3. Where the suction bell rests on the carrier plate, there is a so-called wear ring between the bell and the plate let in. The ring is held in the plate with a few pegs and is designed so that it can be replaced.

Claims (3)

; Exenter sanding plate It. Fig. 1, A, designed in this way, dan There are claws or pegs on the floor in which the foam attaches and creates a firm connection. Sxenter sanding pad with suction channels in the foam that run through Holes in the support plate Fig. 1, A and B led v / earth and oi £ Mounting disk for the sanding disks, sometimes Velcro or adhesive surfaces for self-adhesive sanding disks, as a work process one-piece foamed connection of the part «Fig. 2 A, B and C. Sxenter sanding disc with a wear ring zv / ischen Suction bell and support plate Fig. 2, D of the in a recess Fig. 3, D, is embedded and designed in such a way that that it is interchangeable.