The continuous progressive production RPT of cold stamping stays the mould of piece draw ring
Technical field
The present invention relates to the production mould of tear-off tin pull ring, the continuous progressive production RPT of specifically a kind of cold stamping stays piece to draw
The mould of ring.
Background technology
, used as a kind of food of popularization, beverage package, its light and handy and convenient advantage is by increasing business for pop can
Family and consumer are received, thus increasing food and beverage enterprise all uses pop can as product packaging.Pop can
Lid on pre- open area is formed by line of weakness, pre- open area rivet clasp has RPT draw rings, pre- open region is made by RPT draw rings
Domain body is separated with lid, so as to open pop can.The presence that existing RPT draw rings have larger finger hole, finger hole subtracts
The small area of finger hole periphery tab body, the pellet material of corresponding finger bore region is punched as waste disposal
Cannot utilize.
The content of the invention
Goal of the invention of the invention is to provide the mould that a kind of continuous progressive production RPT of cold stamping stays piece draw ring, by this
Mould can retain the pellet material of finger bore region, in case effectively being utilized in product packaging side.
In order to realize foregoing invention purpose, the present invention uses following technical scheme:
A kind of continuous progressive production RPT of cold stamping stays the mould of piece draw ring, including progressive successively trimming operation, pre-roll work
The edger of sequence, overturning process and molding procedure, pre-curled mould, flange mold and shaping mould, also including trimming operation front portion operation
Cut mould and dent mould, and molding procedure subsequent process groove mould;
The described mould that cuts includes cutting punch-pin and cuts cavity plate, cut punch-pin top and carry curved knife blade, cuts recessed
The corresponding curved knife blade for cutting punch-pin is provided with into tool bore on mould, is cut punch-pin and is cut cavity plate cooperation, and draw ring is reserved
The lamellar body of finger hole position cuts one section of arc incision;
Described dent mould includes dent punch-pin and dent cavity plate, and dent punch-pin outer rim is external with the piece of reserved finger hole position
Edge is matched, and is provided with dent cavity plate and groove is matched with dent punch-pin outer rim, and dent punch-pin and dent cavity plate coordinate, to draw ring
The lamellar body of reserved finger hole position is pressed into finger hole depressed area;
Described pre-curled mould includes mould under mould in pre-roll and pre-roll, and mould edge is provided with pressure angle in pre-roll, under pre-roll on mould
Finger hole depressed area slot to make way is provided with, mould coordinates the draw ring outward flange pressure to being die-cut to by trimming under mould and pre-roll in pre-roll
Into chamfering;
Described groove mould includes mould under mould on groove and groove, is provided with and finger hole depressed area periphery on mould on groove
The groove blade of edge matching, mould coordinates under mould and groove on groove, the RPT draw rings to sequentially passing through flange mold, shaping mold forming
Finger hole depressed area groove, formed with RPT draw rings one but can be torn along groove stay piece.
Using the present invention of above-mentioned technical proposal, compared with prior art, its advantage is:
The pellet material of finger bore region can be retained by the mould, can both increase the integral face of tab body
Product, can be used to the region for retaining again, such as can be to stay printed on piece in reservation region in product packaging
LOGO, carve characters, for client provides products propaganda mode;By carrying out dent, processing line of weakness to the reservation region, hand is realized
The shaping of finger-hole, the use of draw ring is not influenceed.
Preferably, the further technical scheme of the present invention is:
The described curved knife blade arc length for cutting punch-pin accounts for the 1/3 of finger hole girth.
Described dent punch-pin outer rim is oval outer rim, and the groove on described dent cavity plate is oval-shaped groove.
The groove blade of mould is oval blade on described groove, the finger hole of formation be smooth, mellow and full ellipse
Hole.
Brief description of the drawings
Fig. 1 is that the embodiment of the present invention cuts punch-pin front view;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is that the embodiment of the present invention cuts cavity plate front view;
Fig. 4 is the side view of Fig. 3;
Fig. 5 is the dent punch-pin front view of the embodiment of the present invention;
Fig. 6 is the side view of Fig. 5;
Fig. 7 is the dent cavity plate front view of the embodiment of the present invention;
Fig. 8 is A-A direction views in Fig. 7;
Fig. 9 is mould front view in the pre-roll of the embodiment of the present invention;
Figure 10 is the side view of Fig. 9;
Figure 11 be the embodiment of the present invention pre-roll under mould front view;
Figure 12 is the side view of Figure 11;
Figure 13 is mould front view on the groove of the embodiment of the present invention;
Figure 14 is the side view of Figure 13;
Figure 15 be the embodiment of the present invention groove under mould front view;
Figure 16 is the side view of Figure 15;
In figure:Cut punch-pin 1;Curved knife blade 101;Cut cavity plate 2;Enter tool bore 201;Dent punch-pin 3;Dent cavity plate 4;
Groove 401;Mould 5 in pre-roll;Pressure angle 501;Mould 6 under pre-roll;Finger hole depressed area slot to make way 601;Mould 7 on groove;Groove blade
701;Mould 8 under groove.
Specific embodiment
The present invention is further elaborated for the embodiment for being given below in conjunction with the accompanying drawings, but embodiment is not constituted to the present invention and appointed
What is limited.
It is the continuous progressive mould of cold stamping that this RPT that the present embodiment is given stays the mould of piece draw ring, and cold stamping is continuously progressive
Production process is successively:Cut operation, dent operation, trimming operation, pre-roll operation, overturning process, molding procedure, groove work
Sequence;For mould be respectively:Cut mould, dent mould, edger, pre-curled mould, flange mold, shaping mould, groove mould;Wherein, cut
Bian Mo, flange mold, shaping mould are identical with traditional production mould for having finger hole draw ring, and the explanation of its structure is omitted.
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, cut mould and constituted by cutting punch-pin 1 and cutting cavity plate 2, cut the top band of punch-pin 1
There are curved knife blade 101, the 1/3 of the draw ring finger hole girth that the arc length of curved knife blade 101 is accounted for after shaping;It is right on cavity plate 2 to cut
The curved knife blade 101 that punch-pin 1 should be cut is provided with into tool bore 201, is cut punch-pin 1 and is coordinated with cavity plate 2 is cut, to the pre- of draw ring
The lamellar body of finger hole position is stayed to cut one section of arc incision.
Referring to Fig. 5, Fig. 6, Fig. 7, Fig. 8, dent mould is made up of dent punch-pin 3 and dent cavity plate 4, the outer rim of dent punch-pin 3 with
The lamellar body outer rim matching of reserved finger hole position, is oval outer rim;It is provided with what is matched with the oval outer rim on dent cavity plate 4
Oval groove 401, dent punch-pin 3 and dent cavity plate 4 coordinate, and the lamellar body to the reserved finger hole position of draw ring is pressed into ellipse
Finger hole depressed area.
Referring to Fig. 9, Figure 10, Figure 11, Figure 12, pre-curled mould is made up of mould 6 under mould in pre-roll 5 and pre-roll, the edge of mould 5 in pre-roll
Pressure angle 501 is provided with, finger hole depressed area slot to make way 601 is provided with pre-roll on mould 6, mould 6 coordinates under mould 5 and pre-roll in pre-roll
Draw ring outward flange to being die-cut to by trimming is pressed into chamfering, in case lower road overturning process completes the flange on draw ring periphery.
Referring to Figure 13, Figure 14, Figure 15, Figure 16, groove mould is made up of mould 8 under mould on groove 7 and groove, on groove on mould 7
The oval groove blade 701 matched with finger hole depressed area outer peripheral edge is provided with, mould 8 is platform structure, groove under groove
Mould 8 coordinates under upper mould 7 and groove, the finger hole depressed area quarter to sequentially passing through overturning process, the RPT draw rings of molding procedure shaping
Line, forms and the RPT draw rings one but ellipse that can be torn along groove stays piece.
Preferably feasible embodiment of the invention is the foregoing is only, not thereby limits to interest field of the invention,
The equivalent structure change that all utilization description of the invention and accompanying drawing content are made, is both contained within interest field of the invention.