Cold stamping is gone forward one by one continuously and is produced the mould that RPT stays sheet draw ring
Technical field
The present invention relates to the production mould of tear-off tin pull ring, specifically a kind of cold stamping is gone forward one by one continuously and is produced RPT and stay the mould of sheet draw ring.
Background technology
Pop can as a kind of universal food, beverage package, its light and handy and easily advantage by increasing businessman and consumer accept, thus increasing Food & Drink enterprise all adopts pop can as the packing of product.The lid of pop can forms pre-open area by line of weakness, and pre-open area rivet clasp has RPT draw ring, by RPT draw ring, pre-open area body is separated with lid, thus opens pop can.Existing RPT draw ring has larger finger hole, and the existence of finger hole reduces the area of finger hole periphery tab body, and the pellet material in corresponding finger hole region is punched and cannot utilizes as waste disposal.
Summary of the invention
Goal of the invention of the present invention is to provide a kind of cold stamping and goes forward one by one continuously and produce RPT and stay the mould of sheet draw ring, the pellet material in finger hole region can be retained, prepare against and effectively utilized in packing of product side by this mould.
In order to realize foregoing invention object, the present invention by the following technical solutions:
A kind of cold stamping is gone forward one by one continuously and is produced the mould that RPT stays sheet draw ring, comprise the edger of trimming operation, pre-roll operation, overturning process and the molding procedure of going forward one by one successively, pre-curled mould, flange die and shaping mould, also comprise cutting mould and breaking die of the anterior operation of trimming operation, and the groove mould of molding procedure subsequent process;
The described mould that cuts comprises and cuts punch and cut die, cut punch top with curved knife blade, to cut on die the corresponding curved knife blade cutting punch and be provided with feed hole, cut punch and cut die and coordinate, one section of arc incision is cut to the lamellar body of the reserved finger hole position of draw ring;
Described die of beating comprises dozen concave-convex mold and beats concavo-concave mould, beat concave-convex mold outer rim to mate with the lamellar body outer rim of reserved finger hole position, beat and concavo-concave mould is provided with and beats concave-convex mold outer rim and mate groove, beat concave-convex mold and beat concavo-concave mould and coordinate, finger hole depressed area is pressed into the lamellar body of the reserved finger hole position of draw ring;
Described pre-curled mould comprises pre-roll patrix and pre-roll counterdie, and pre-roll patrix edge is provided with pressure angle, pre-roll counterdie is provided with finger hole depressed area slot to make way, and pre-roll patrix and the cooperation of pre-roll counterdie are pressed into chamfering to the draw ring outward flange be cut into through edger;
Described groove mould comprises groove patrix and groove counterdie, groove patrix is provided with the groove blade mated with outer peripheral edge, finger hole depressed area, groove patrix and groove counterdie coordinate, to successively through the finger hole depressed area groove of the shaping RPT draw ring of flange die, shaping mould, formed with RPT draw ring one but can tear along groove stay sheet.
Adopt the present invention of technique scheme, compared with prior art, its beneficial effect is:
The pellet material in finger hole region can be retained by this mould, both can increase the entire area of tab body, can the region retained be used, such as when the packing of product again, namely can stay at reserve area and sheet print LOGO, carve characters, for client provides products propaganda mode; By this reserve area is carried out beat recessed, processing line of weakness, realize the shaping of finger hole, do not affect the use of draw ring.
As preferably, the further technical scheme of the present invention is:
The described curved knife blade arc length cutting punch accounts for 1/3 of finger hole girth.
Described concave-convex mold outer rim of beating is oval outer rim, and the described groove beaten on concavo-concave mould is oval-shaped groove.
The groove blade of described groove patrix is oval blade, and the finger hole of formation is level and smooth, mellow and full slotted eye.
Accompanying drawing explanation
Fig. 1 be the embodiment of the present invention cut punch front view;
Fig. 2 is the side view of Fig. 1;
Fig. 3 be the embodiment of the present invention cut die front view;
Fig. 4 is the side view of Fig. 3;
Fig. 5 be the embodiment of the present invention play concave-convex mold front view;
Fig. 6 is the side view of Fig. 5;
Fig. 7 be the embodiment of the present invention play concavo-concave mould front view;
Fig. 8 is A-A direction view in Fig. 7;
Fig. 9 is the groove patrix front view of the embodiment of the present invention;
Figure 10 is the side view of Fig. 9;
Figure 11 is the groove counterdie front view of the embodiment of the present invention;
Figure 12 is the side view of Figure 11;
Figure 13 is the groove patrix front view of the embodiment of the present invention;
Figure 14 is the side view of Figure 13;
Figure 15 is the groove counterdie front view of the embodiment of the present invention;
Figure 16 is the side view of Figure 15;
In figure: cut punch 1; Curved knife blade 101; Cut die 2; Feed hole 201; Beat concave-convex mold 3; Beat concavo-concave mould 4; Groove 401; Pre-roll patrix 5; Pressure angle 501; Pre-roll counterdie 6; Finger hole depressed area slot to make way 601; Groove patrix 7; Groove blade 701; Groove counterdie 8.
Detailed description of the invention
The present invention is further elaborated for the embodiment provided below in conjunction with accompanying drawing, but embodiment does not form any restriction to the present invention.
This RPT that the present embodiment provides stays the mould of sheet draw ring to be that cold stamping is gone forward one by one mould continuously, and cold stamping goes forward one by one production process successively continuously: cut operation, beats recessed operation, trimming operation, pre-roll operation, overturning process, molding procedure, groove operation; For mould respectively: cut mould, break die, edger, pre-curled mould, flange die, shaping mould, groove mould; Wherein, edger, flange die, shaping mould have the production mould of finger hole draw ring identical with traditional, and its structure illustrates to be omitted.
See Fig. 1, Fig. 2, cut mould and form by cutting punch 1 and cutting die 2, cut punch 1 top with curved knife blade 101, curved knife blade 101 arc length account for shaping after draw ring finger hole girth 1/3; To cut on die 2 the corresponding curved knife blade 101 cutting punch 1 and be provided with feed hole 201, cut punch 1 and cut die 2 and coordinate, one section of arc incision is cut to the lamellar body of the reserved finger hole position of draw ring.
See Fig. 3, Fig. 4, break die and form by beating concave-convex mold 3 and beating concavo-concave mould 4, beating concave-convex mold 3 outer rim and mate with the lamellar body outer rim of reserved finger hole position, is oval outer rim; Beat the groove 401 concavo-concave mould 4 being provided with the ellipse that outer rim oval with this mate, beat concave-convex mold 3 and beat concavo-concave mould 4 and coordinate, the lamellar body of the reserved finger hole position of draw ring is pressed into the finger hole depressed area of ellipse.
See Fig. 5, Fig. 6, pre-curled mould is made up of pre-roll patrix 5 and pre-roll counterdie 6, pre-roll patrix 5 edge is provided with pressure angle 501, pre-roll counterdie 6 is provided with finger hole depressed area slot to make way 601, pre-roll patrix 5 and pre-roll counterdie 6 coordinate the draw ring outward flange to being cut into through edger to be pressed into chamfering, to get the flange that overturning process completes draw ring periphery ready.
See Fig. 7, Fig. 8, groove mould is made up of groove patrix 7 and groove counterdie 8, groove patrix 7 is provided with the groove blade 701 of the ellipse mated with outer peripheral edge, finger hole depressed area, groove counterdie 8 is platform structure, groove patrix 7 and groove counterdie 8 coordinate, to successively through the finger hole depressed area groove of the shaping RPT draw ring of overturning process, molding procedure, to be formed with RPT draw ring one but the ellipse can torn along groove stays sheet.
The foregoing is only the better feasible embodiment of the present invention, not thereby limit to interest field of the present invention, the equivalent structure change that all utilizations description of the present invention and accompanying drawing content are done, be all contained within interest field of the present invention.