CN219465777U - Expansion-shrinkage abrasive belt polishing jig - Google Patents

Abstract

The utility model provides a collapsible abrasive belt polishing jig which comprises a connecting ring, a tensioning ring and a collapsible component, wherein the tensioning ring is arranged at the top of the connecting ring, the collapsible component comprises a plurality of arc collapsible parts distributed around the tensioning ring in an annular array, a first annular limiting part is arranged on the periphery of the top of the connecting ring in an extending mode, an arc-shaped groove is arranged at the bottom of the arc collapsible part, the first annular limiting part is movably arranged on the arc-shaped groove, a first inclined surface is arranged on the periphery of the side wall of the tensioning ring, a second inclined surface matched with the first inclined surface is arranged on the inner ring wall of the arc-shaped collapsible part, when the first inclined surface is abutted against the second inclined surface, the inner ring wall of the arc-shaped groove is abutted against the inner ring wall of the first annular limiting part, and an abrasive belt is positioned on the collapsible component in a tensioning mode, so that abrasive belt installation and fixation are achieved, the abrasive belt replacement efficiency can be improved, and the assembly stability is high.

Description

Expansion-shrinkage abrasive belt polishing jig

Technical Field

The utility model relates to the technical field of polishing, in particular to a collapsible abrasive belt polishing jig.

Background

In the production industries of hardware, 3C and the like, the surface of a product is rough and has burrs in the production process of the product, and the product is generally required to be polished to ensure the smoothness of the product.

At present, a finished product abrasive belt machine or an abrasive belt mechanism which is common in the market needs to be sleeved on a mounting seat, the abrasive belt is fixed by adopting a spring or an air cylinder tensioning mode, the component parts are various, the structure is complex, the cost is too high, the abrasive belt machine or the abrasive belt mechanism can be used only by debugging, fine adjustment is sometimes required in the use process, the requirement on a user is high, and certain basic knowledge is required.

Disclosure of Invention

The utility model aims to solve the problem of providing the expansion type abrasive belt polishing jig which can conveniently fix an abrasive belt, simplify the installation process and facilitate the disassembly and assembly of the abrasive belt.

The technical problem to be solved is to provide the expanding and contracting abrasive belt polishing jig according to the utility model, which comprises a connecting ring, a tensioning ring and an expanding and contracting assembly, wherein the tensioning ring is arranged at the top of the connecting ring, the expanding and contracting assembly comprises a plurality of arc expanding and contracting members distributed around the tensioning ring in an annular array, a first annular limiting part is arranged on the periphery of the top of the connecting ring in an extending manner, an arc groove is arranged at the bottom of the arc expanding and contracting member, the first annular limiting part is movably arranged on the arc groove, a first inclined surface is arranged on the periphery of the side wall of the tensioning ring, a second inclined surface matched with the first inclined surface is arranged on the inner ring wall of the arc expanding and contracting member, and when the first inclined surface is abutted on the second inclined surface, the inner ring wall of the arc groove is abutted on the inner ring wall of the first annular limiting part.

Preferably, a plurality of through holes are uniformly distributed on the tension ring, locking screw holes matched with the through holes are formed in the top of the connecting ring, and the through holes are connected with the locking screw holes through screws.

Preferably, the bottom of the arc-shaped expansion and contraction piece is divided into an inner ring part and an outer ring part by an arc-shaped groove at intervals, the bottom end surface of the outer ring part exceeds the bottom end surface of the inner ring part, a third inclined surface is arranged at the inner edge of the bottom end of the outer ring part, the bottom of the connecting ring is enlarged to form a disc part, a fourth inclined surface matched with the third inclined surface is arranged at the periphery of the disc part, an annular connecting part is arranged at the periphery of the inner wall of the outer ring part, a second annular limiting part is arranged at the inner edge of the annular connecting part, an annular clamping groove matched with the second annular limiting part is arranged at the top of the disc part, and when the third inclined surface is abutted to the fourth inclined surface, the second annular limiting part is embedded on the annular clamping groove.

Preferably, the top periphery of the tensioning ring is provided with a pressing part in an extending mode, the top periphery of the inner ring of the arc-shaped expansion and contraction piece is provided with a position avoiding groove matched with the pressing part, and when the first inclined surface is abutted to the second inclined surface, the pressing part is pressed on the position avoiding groove.

Preferably, the outer rings of the arc-shaped expansion and contraction pieces are sleeved with annular cushions.

Preferably, the annular cushion is EVA.

Preferably, the collapsible assembly comprises four arcuate collapsible members.

The beneficial effects of the utility model are as follows: the utility model provides a polishing jig for an expanding and contracting abrasive belt, which is characterized in that the abrasive belt to be installed is sleeved on an expanding and contracting assembly, a tensioning ring is tightly pressed on the top of a connecting ring, a first inclined surface applies force to a second inclined surface of each arc-shaped expanding and contracting member, each arc-shaped expanding and contracting member is outwards expanded, the first inclined surface is finally led to be abutted against the second inclined surface, the inner ring wall of an arc-shaped groove is abutted against the inner ring wall of a first annular limiting part, the maximum expansion stroke of each arc-shaped expanding and contracting member is achieved, the abrasive belt is expanded and positioned on the expanding and contracting assembly, and therefore the abrasive belt is installed and fixed.

Drawings

Fig. 1 illustrates an outline structure of the present utility model.

Fig. 2 illustrates a schematic cross-sectional structure of the present utility model.

Fig. 3 illustrates an exploded structural schematic of the present utility model.

Reference numerals illustrate: the connecting ring 10, the first annular limiting part 11, the locking screw hole 12, the disc part 13, the fourth inclined surface 130, the annular clamping groove 131, the tensioning ring 20, the first inclined surface 21, the through hole 22, the pressing part 23, the arc-shaped expanding and contracting piece 30, the arc-shaped groove 31, the second inclined surface 32, the inner ring part 33, the outer ring part 34, the third inclined surface 340, the annular connecting part 341, the second annular limiting part 342, the clearance groove 35 and the annular cushion 40.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. It will be apparent that the described embodiments are some, but not all, of the embodiments of the present disclosure.

All other embodiments, which can be made by one of ordinary skill in the art without the need for inventive faculty, are intended to be within the scope of the present disclosure, based on the described embodiments of the present disclosure.

Reference is made to fig. 1-3.

The utility model provides a collapsible abrasive belt polishing jig which comprises a connecting ring 10, a tensioning ring 20 and a collapsible component, wherein the tensioning ring 20 is arranged at the top of the connecting ring 10, the collapsible component comprises a plurality of arc collapsible pieces 30 distributed around the tensioning ring 20 in an annular array, a first annular limiting part 11 is arranged on the periphery of the top of the connecting ring 10 in an extending mode, an arc groove 31 is arranged at the bottom of the arc collapsible piece 30, the first annular limiting part 11 is movably arranged on the arc groove 31, a first inclined surface 21 is arranged on the periphery of the side wall of the tensioning ring 20, a second inclined surface 32 matched with the first inclined surface 21 is arranged on the inner ring wall of the arc collapsible piece 30, and when the first inclined surface 21 is abutted to the second inclined surface 32, the inner ring wall of the arc groove 31 is abutted to the inner ring wall of the first annular limiting part 11.

The abrasive belt to be installed is sleeved on the collapsible component, the tensioning ring 20 is tightly pressed on the top of the connecting ring 10, the first inclined surface 21 applies force to the second inclined surface 32 of each arc-shaped collapsible component 30, each arc-shaped collapsible component 30 expands outwards, the first inclined surface 21 is finally abutted on the second inclined surface 32, the inner ring wall of the arc-shaped groove 31 is abutted on the inner ring wall of the first annular limiting part 11, each arc-shaped collapsible component 30 expands a maximum stroke, the abrasive belt is tightly positioned on the collapsible component, the abrasive belt can be installed and fixed by fixing the tensioning ring 20 on the top of the connecting ring 10, each arc-shaped collapsible component 30 is contracted after the top of the tensioning ring 20 is released again, the abrasive belt can be taken out from the collapsible component at the moment, the operation process is simple, convenient and quick, the replacement efficiency of the abrasive belt can be improved, and the assembly stability is high.

Based on the above embodiment, the tensioning ring 20 is uniformly provided with a plurality of through holes 22, the top of the connecting ring 10 is provided with locking screw holes 12 matched with the through holes 22, and the through holes 22 are connected with the locking screw holes 12 through screws. Specifically, when the screw is locked on the locking screw hole 12, the tensioning ring 20 is gradually compressed on the top of the connecting ring 10, the first inclined surface 21 is abutted on the second inclined surface 32, so that each arc-shaped expansion and contraction piece 30 is expanded, and the expansion and the positioning of the abrasive belt can be realized; the tensioning ring 20 can be loosened from the top of the connecting ring 10 by loosening the screw, so that the tensioning release of the abrasive belt is realized. In order to achieve the same effect, an internal threaded hole may be provided at the top of the connection ring 10, and an external thread may be provided at the bottom of the tightening ring 20, so that the tightening ring 20 may realize the advancing and retreating motion in a threaded connection manner, thereby realizing the expanding and contracting motion of the arc-shaped expanding and contracting assembly 30, so as to expand or release the abrasive belt.

Based on the above embodiment, the bottom of the arc-shaped collapsible member 30 is divided into the inner ring portion 33 and the outer ring portion 34 at intervals by the arc-shaped groove 31, the bottom end surface of the outer ring portion 34 exceeds the bottom end surface of the inner ring portion 33, the inner edge of the bottom end of the outer ring portion 34 is provided with the third inclined surface 340, the bottom of the connecting ring 10 is enlarged to form the disc portion 13, the periphery of the disc portion 13 is provided with the fourth inclined surface 130 matched with the third inclined surface 340, the periphery of the inner wall of the outer ring portion 34 is provided with the annular connecting portion 341, the inner edge of the annular connecting portion 341 is provided with the second annular limiting portion 342, the top of the disc portion 13 is provided with the annular clamping groove 131 matched with the second annular limiting portion 342, and when the third inclined surface 340 abuts against the fourth inclined surface 130, the second annular limiting portion 342 is embedded in the annular clamping groove 131.

Based on the above embodiment, the top periphery of the tensioning ring 20 is provided with the pressing portion 23 in an extending manner, the top periphery of the inner ring of the arc-shaped collapsible member 30 is provided with the clearance groove 35 matched with the pressing portion 23, and when the first inclined surface 21 abuts against the second inclined surface 32, the pressing portion 23 is pressed on the clearance groove 35, so that the positioning effect can be achieved on each arc-shaped collapsible member 30, and the arc-shaped collapsible member 30 is prevented from moving.

Based on the above embodiment, the outer ring of the plurality of arc-shaped collapsible members 30 is sleeved with the annular buffer cushion 40, which plays a role in buffering, prevents the abrasive belt from being in direct contact with the mechanical parts and from being in place, and prevents the product from being excessively thrown.

Based on the above embodiment, the ring cushion 40 is EVA, which has good elasticity and can perform a good cushioning function.

Based on the above embodiment, the collapsible component comprises four arc collapsible pieces 30, and has simple structure and good working stability.

The above embodiments are merely illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solution of the present utility model should fall within the scope of protection defined by the claims of the present utility model without departing from the spirit of the design of the present utility model.

Claims (7)

1. The utility model provides a shrink formula abrasive band polishing jig, its characterized in that contains go-between, tension ring, the subassembly that contracts, tension ring set up in the go-between top, the subassembly that contracts contains a plurality of annular array and distributes around the tension ring arc piece that contracts, go-between top circumference extension is provided with first annular spacing portion, arc piece bottom that contracts is provided with the arc slot, first annular spacing portion activity set up in on the arc slot, the lateral wall circumference of tension ring is provided with first inclined plane, be provided with on the inner circle wall of arc piece with the second inclined plane of first inclined plane matching, works as first inclined plane butt is in when on the second inclined plane, arc slot inner circle wall butt is in on the inner circle wall of first annular spacing portion.

2. The collapsible abrasive belt polishing jig according to claim 1, wherein a plurality of through holes are uniformly distributed on the tightening ring, locking screw holes matched with the through holes are formed in the top of the connecting ring, and the through holes are connected with the locking screw holes through screws.

3. The expanding and contracting abrasive belt polishing jig according to claim 2, wherein the bottom of the arc expanding and contracting piece is divided into an inner ring portion and an outer ring portion at intervals by the arc grooves, the bottom end surface of the outer ring portion exceeds the bottom end surface of the inner ring portion, a third inclined surface is arranged at the inner edge of the bottom end of the outer ring portion, the bottom of the connecting ring is enlarged to form a disc portion, a fourth inclined surface matched with the third inclined surface is arranged at the periphery of the disc portion, an annular connecting portion is arranged at the periphery of the inner wall of the outer ring portion, a second annular limiting portion is arranged at the inner edge of the annular connecting portion, an annular clamping groove matched with the second annular limiting portion is arranged at the top of the disc portion, and when the third inclined surface is abutted to the fourth inclined surface, the second annular limiting portion is embedded in the annular clamping groove.

4. A collapsible abrasive belt polishing jig according to claim 3, wherein the top periphery of the tightening ring is provided with a pressing part, the top periphery of the inner ring of the arc-shaped collapsible member is provided with a clearance groove matched with the pressing part, and when the first inclined surface abuts against the second inclined surface, the pressing part is pressed on the clearance groove.

5. A collapsible belt sander as set forth in any one of claims 1-4, wherein the outer ring of said plurality of arcuate collapsible members is sleeved with a ring cushion.

6. A collapsible belt sander as set forth in claim 5, wherein said annular cushion is EVA.

7. A collapsible belt polishing jig as claimed in claim 1 wherein said collapsible assembly comprises four said arcuate collapsible members.