CN101284369B

CN101284369B - Preparation method of ground section

Info

Publication number: CN101284369B
Application number: CN200810061781XA
Authority: CN
Inventors: 陈光明
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-05-20
Filing date: 2008-05-20
Publication date: 2011-04-27
Anticipated expiration: 2028-05-20
Also published as: CN101284369A

Abstract

A method for preparing a grinding disc is characterized in that the method includes the following method: a. placing a basal disc in a pressing plate mould; b. coating a second gluing surface of the basal disc and a first gluing surface of the pressing plate mould with an adhesive; c. pasting carborundum discs flatly and smoothly to the corresponding positions of the basal disc and the pressing plate mould coated with the adhesive, and compacting; d. compacting the pressing plate mould so as to hold the original adhesive state of the carborundum discs, then solidifying for molding, and demoulding. Compared with prior art, the method has the advantages of low equipment requirement, easy operation, practicability and convenience; the entire preparation flow has less work procedure and higher efficiency; and the prepared product has stable quality, firm carborundum disc adhesion and high integrity; since the adhesive is pasted only on the part back of the carborundum disc, the product has high utilization ratio and wear resistance; a slicing machine is adopted to carry out cutting and pressing, therefore, the method is convenient, rapid and laborsaving.

Description

A kind of preparation method of abrasive disc

Technical field

The present invention relates to a kind of preparation method of abrasive disc, this abrasive disc is applicable to polishing or polishing metal and nonmetallic surface.

Background technology

At present, common abrasive disc structure comprises basal disc and gluing in the sand sheet of basal disc periphery, and its preparation method generally in turn includes the following steps:

A, the sand sheet is washed into small pieces, puts into box, make sand sheet integral body by certain order;

B, the sand sheet is integrally pushed in the mould with lattice number, the sand sheet is to putting into corresponding grid;

C, glue is coated on tray surface; D, get aforementioned pallet and be pressed in the mould that is placed with the sand sheet;

E, the demoulding seal in screw rod after the demoulding, the oven dry of fixing back, both required abrasive disc.

There is following weak point in this preparation:

The first, easily loose, easily lose, the sand sheet is washed into must put behind the small pieces and makes in its grid that pushes mould exactly, sand sheet volume is little be difficult for neat, easy omission;

The second, product quality is difficult to guarantee, inefficiency, punching, reason sheet, dummy slider, gluing and seal in screw rod etc. and be manual operations, and artificial error exists, and product quality is uneven, is difficult to guarantee;

The 3rd, inefficiency, whole preparation work also rests on family workshop type, and large-scale production is restricted, has been difficult to satisfy the needs of modern production;

The 4th, fastness is not enough, and only in the one side of pallet, strike-through is few between the sand sheet, causes adhesiveness not enough for gluing, and there is potential safety hazard in easy film flying in the use;

The 5th, the sand sheet easily is shifted, and product is to seal in after the demoulding again, so oven dry the time easily is shifted, influences globality.

In sum, be necessary existing abrasive disc preparation method is improved and optimizes.

Summary of the invention

Technical problem to be solved by this invention is the preparation method that a kind of simple to operate, abrasive disc that product is stable is provided at above-mentioned prior art present situation.

The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of preparation method of abrasive disc is characterized in that in turn including the following steps:

A, basal disc is put into the pressing plate mould, wherein, described pressing plate mould is inner concavity, and the middle part has a groove for described basal disc placement, first gluing surface that has a depression around this groove, the periphery of described basal disc has second gluing surface, and described basal disc is under the described groove state, and described first gluing surface and second gluing surface are formed for the gluing surface of tacky sand sheet;

B, adhesive is coated in respectively on first gluing surface of second gluing surface of basal disc and pressing plate mould;

C, the sand sheet entirely is bonded at basal disc and the pressing plate mould correspondence position that scribbles adhesive by certain order and compresses;

D, make the sand sheet keep original state when gluing, solidifying and setting then in pressing plate mold pressing jail.

Adhesive described in the step b is an epoxy resin, and operating temperature is 80～120 ℃; Can also be phenolic resins, operating temperature be 170～180 ℃.

For increasing work efficiency, adopt the glue spreader gluing among the step b.Can certainly adopt manually-operated, but serve as preferred with the former.

For increasing work efficiency, the sand sheet that adopts slicer that cutting is finished among the step c sticks at basal disc and pressing plate mould correspondence position.

Can adopt in baking oven or the air solidifying and setting under the natural conditions in the steps d.

The described pressing plate mould of stating is around the lobed external annulus of the first gluing surface outer rim.Make adhesive be unlikely to flow out from the first gluing surface outer rim, can guarantee that sand sheet outer rim longitudinal surface has adhesive simultaneously, it is more firm that the sand sheet is gluedd joint.

Before gluing, described first gluing surface also scribbles releasing agent, is convenient to the demoulding.

Compared with prior art, the invention has the advantages that: equipment requires low, simple to operate, practical and convenient; Whole preparation flow operation is few, the production efficiency height; The products obtained therefrom steady quality, sand sheet bonding is firm, globality is good, because sand sheet part back has only adhesive, thus sand sheet utilization rate height, and wear-resisting; Adopt slicer to implement section and compressing tablet, convenient and swift, save the labour.

Description of drawings

Fig. 1 is the structural representation of embodiment center platen mould.

Fig. 2 is the structural representation of basal disc among the embodiment.

Fig. 3 is the three-dimensional cutaway view of basal disc.

Fig. 4 is installed on structural representation behind the pressing plate mould for basal disc.

Fig. 5 is the gluing structural representation behind the pressing plate mould of sand sheet.

Fig. 6 is the structural representation of abrasive disc.

Fig. 7 is another visual angle structural representation of abrasive disc.

Fig. 8 is the cutaway view of abrasive disc.

The specific embodiment

Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.

Embodiment: with reference to shown in Figure 1, the pressing plate mould 1 in the present embodiment is inner concavity, and the middle part has a groove 12, and first gluing surface 11 that has a depression around this groove 12 is around the lobed external annulus 13 of first gluing surface, 11 outer rims.

Referring to figs. 2 and 3 shown in, the periphery of the basal disc 2 in the present embodiment has the lobed internal ring wall 22 of second gluing surface, 21, the second gluing surfaces, 21 inner edges, and the middle part has connecting hole 24, can be installed on the electric tool, also have the reinforcement 23 that annular reinforces the connection around connecting hole.

With reference to shown in Figure 4, basal disc 2 is under groove 12 states, and first gluing surface 11 and second gluing surface 21 are formed for the gluing surface of tacky sand sheet 3, and, seamless between first gluing surface 11 and second gluing surface 21.

The preparation method of abrasive disc 4 in turn includes the following steps:

A, put into basal disc 2 (with reference to shown in Figure 4) on pressing plate mould 1, coating release agent on first gluing surface 11 can certainly not use releasing agent, and this depends primarily on the material that pressing plate mould 1 adopts and decides;

B, all scribble adhesive, adopt glue spreader during gluing at second gluing surface 21 of basal disc 2 and first gluing surface 11 of pressing plate mould 1;

C, employing slicer entirely are bonded at basal disc 2 and pressing plate mould 1 correspondence position that scribbles adhesive with sand sheet 3 by certain order and compress (with reference to shown in Figure 5);

D, pressing plate mould 1 fastened make sand sheet 3 keep original state when gluing, solidifying and setting then, the demoulding obtains abrasive disc 4 as shown in Figure 6 and Figure 7, and solidifying and setting can adopt in baking oven or the air and finish under the natural conditions.

Adhesive in the present embodiment can be an epoxy resin, and operating temperature is 80～120 ℃, also can be phenolic resins, and operating temperature is 170～180 ℃.

With reference to figure 6, Fig. 7 and shown in Figure 8, preparation gained abrasive disc 4 is made up of sand sheet 3 and basal disc 2 in the present embodiment, sand sheet 3 inner ends are gluing with the outside of second gluing surface 21 and internal ring wall 22 respectively, the back side, outer end of sand sheet 3 forms a very thin sheet adhesive by first gluing surface 11, and the outer rim of sand sheet also vertically is adhesive with adhesive 6.Sand sheet 3 is gluing on basal disc 2 by adhesive 6 semi-surrounding formulas like this.The sand sheet 3 utilization rate height of gained abrasive disc 4, sand sheet 3 bondings firmly are not prone to part or film flying phenomenon in the use.

Claims

1. the preparation method of an abrasive disc is characterized in that in turn including the following steps:

D, make the sand sheet keep original state when gluing in pressing plate mold pressing jail, solidifying and setting then, the demoulding.

2. the preparation method of abrasive disc according to claim 1 is characterized in that the adhesive described in the step b is an epoxy resin, and operating temperature is 80～120 ℃.

3. the preparation method of abrasive disc according to claim 1 is characterized in that the adhesive described in the step b is a phenolic resins, and operating temperature is 170～180 ℃.

4. according to the preparation method of the described abrasive disc of the arbitrary claim of claim 1～3, it is characterized in that adopting among the step b glue spreader gluing.

5. according to the preparation method of the arbitrary described abrasive disc of claim 1～3, it is characterized in that the sand sheet that adopts slicer that cutting is finished among the step c sticks at basal disc and pressing plate mould correspondence position.

6. according to the preparation method of the arbitrary described abrasive disc of claim 1～3, it is characterized in that adopting in the steps d in baking oven or the air solidifying and setting under the natural conditions.

7. according to the preparation method of the arbitrary described abrasive disc of claim 1～3, it is characterized in that described pressing plate mould is around the lobed external annulus of the first gluing surface outer rim.

8. according to the preparation method of the arbitrary described abrasive disc of claim 1～3, it is characterized in that before gluing that described first gluing surface also scribbles releasing agent.