Resin row miaow mould
The utility model relates to a kind of mould, produces for slide fastener, is specially resin row miaow mould.
Resin teeth zipper is made up of chain tooth, pull head, spacing code or locking member etc.Wherein, chain tooth is referred to as again miaow tooth, and resin teeth zipper is produced by row's tooth mold injection.
Existing resin teeth zipper miaow tooth injection mold comprises upper die and lower die, and upper die and lower die are respectively provided with half corresponding miaow tooth form chamber, surrounds the die cavity being formed and be used for injection molding zipper miaow tooth.T-shaped top board is provided with at this counterdie overcentre, when matched moulds by arrange bottom counterdie re-pack on some knock pins upwards eject this T-shaped forming board can upwards be pushed up, and utilize spring strength to reply, make this T-shaped forming board come and go action up and down, help product stripping with this.In above-mentioned structure, this T-shaped forming board is the oblong body of more than at least three hundred multifibres rice, is limited by miaow tooth thickness, and T-shaped plate top thickness of two sides is all thinner, minimumly can reach 10 decimillimeters.
Following shortcoming is often produced like this: the elongated T-shaped forming board of up and down reciprocatingly action often occurs to clash into the both sides of the edge, miaow tooth form chamber of upper and lower mould and injures both sides of the edge, miaow tooth form chamber and the T-shaped forming board of the upper and lower mould of injection mould when actual act.And T-shaped forming board top thickness of two sides is thinner, therefore often damaged by pressure.Often change T-shaped forming board on the one hand and add mold use cost, also improve the maintenance rate of mould on the other hand.
Utility model content
For above-mentioned technical problem, the utility model provides a kind of resin teeth zipper row tooth mould, to reduce row's tooth mold use cost and maintenance rate.
Concrete technical scheme is:
Resin row miaow mould, comprise upper die and lower die and re-pack, counterdie has lower miaow tooth form chamber, and there is lower cloth trough of belt both sides, lower miaow tooth form chamber; Corresponding patrix is provided with miaow tooth form chamber, and both sides, upper miaow tooth form chamber have upper cloth trough of belt respectively; Patrix is also provided with sprue and multiple runner, and sprue is positioned in the middle of miaow tooth form chamber, and runner is positioned at sprue both sides, and runner opposite side is connected with corresponding upper miaow tooth form chamber; Under counterdie, miaow tooth form chamber center line has through hole, to having push rod on re-packing, push rod is arranged in through hole, the height of push rod and the deep equality of through hole; When push rod declines, in through hole, form cylinder die cavity.
The resin row miaow mould that the utility model provides, simplify resin row miaow mould structure, instead of in the mode of the front top plate demoulding with the push rod demoulding, on the one hand the manufacture difficulty of the row's of reducing miaow mould, the row's of also reducing miaow mold use cost, improves production efficiency on the other hand.
Accompanying drawing explanation
Fig. 1 is perspective view of the present utility model;
Fig. 2 is upper die structure schematic diagram of the present utility model;
Fig. 3 is patrix cross-sectional view of the present utility model.
Detailed description of the invention
Accompanying drawings the utility model detailed description of the invention.
As shown in Figure 1, Figure 2 and Figure 3, resin row miaow mould, comprise patrix 1, counterdie 2 and re-pack 3, counterdie 2 has lower miaow tooth form chamber 5, and there is lower cloth trough of belt 11 both sides, lower miaow tooth form chamber 5; Corresponding patrix 1 is provided with miaow tooth form chamber 4, and both sides, upper miaow tooth form chamber 4 have upper cloth trough of belt respectively; Patrix 1 is also provided with sprue 12 and multiple runner 13, and sprue 12 is positioned in the middle of miaow tooth form chamber 4, and runner 13 is positioned at sprue 12 both sides, and runner 13 opposite side is connected with corresponding upper miaow tooth form chamber 4; Counterdie 2 times miaow tooth form chamber 5 center lines have through hole 10, and re-pack to there being push rod 9 on 3, push rod 9 is arranged in through hole 10, the height of push rod 9 and the deep equality of through hole 10; When push rod 9 declines, in through hole 10, form cylinder die cavity 14.Two of slide fastener straps are fallen into corresponding miaow tooth form chamber 5 along lower cloth trough of belt 11, two straps by injection machine respectively respectively, re-pack 3 to sinking simultaneously, and push rod 9 surrounds several cylinder die cavities 14 with the through hole 10 of counterdie 2.After matched moulds, resin material flows into cylinder die cavity 14 and runner 13 along sprue 12, in the die cavity that runner 13 flows into corresponding upper miaow tooth form chamber 4 and lower miaow tooth form chamber 5 composition, carries out the making of miaow tooth, flow into cylinder die cavity 14 and form cylinder, miaow tooth makes complete, parting, and re-pack 3 upper ejector pins 9 upwards liftout, the demoulding of push rod 9 jack-up cylinder, injection machine proceeds above-mentioned making step after cloth being brought into the distance of a mould, so repeats, and just achieves row's miaow of resin teeth zipper.