CN108582672B

CN108582672B - Production mold for plastic steel zipper and use method thereof

Info

Publication number: CN108582672B
Application number: CN201810413280.7A
Authority: CN
Inventors: 陈凌剑; 朱松峰; 张田
Original assignee: Fujian SBS Zipper Science and Technology Co Ltd
Current assignee: Fujian SBS Zipper Science and Technology Co Ltd
Priority date: 2018-05-03
Filing date: 2018-05-03
Publication date: 2020-06-02
Anticipated expiration: 2038-05-03
Also published as: CN108582672A

Abstract

The utility model provides a production mould of plastic steel zip fastener and application method, including last mould and lower mould, last mould and lower mould all are equipped with the chain tooth groove that is used for placing the trough of cloth and is used for moulding plastics chain tooth, the trough of cloth of last mould cooperatees from top to bottom with the trough of cloth of lower mould, the chain tooth groove of last mould cooperatees from top to bottom with the chain tooth groove of lower mould, the bar groove has still been seted up at the chain tooth groove middle part of lower mould, this bar groove internalization inlays and is equipped with the shaping stick, still include a drive mechanism, drive mechanism passes through a pushing ram transmission control shaping stick and removes along bar. Through setting up drive mechanism for before going up mould and lower mould die sinking, drive mechanism can control earlier that the shaping stick removes along the relative plastic steel chain tooth of bar recess, thereby eliminate the plastic steel chain tooth and to the power of packing of shaping stick, make the pulling force that bears when injection moulding's zip fastener is pulled out originally by more than 10 kilograms fall to below 1 kilogram, consequently eliminated the quality defects such as the zip fastener strap that prior art production produced because of the effect of huge pulling force is elongated.

Description

Production mold for plastic steel zipper and use method thereof

Technical Field

The invention relates to a plastic steel zipper production mold, in particular to a plastic steel zipper production mold and a use method thereof.

Background

At present, in a mold for injection molding production of plastic steel zipper teeth, a molding rod (namely a tooth ejecting rod on the mold) is fixed before a chain tooth product is ejected, until the mold is opened, the molding rod (with the chain teeth wrapped on the molding rod) is ejected first, and then the chain teeth are pulled out by a pulling mechanism. The zipper produced in this way has the advantages that the zipper teeth are not fully cooled, the cloth belt and the zipper teeth bear large pulling force (generally more than 10 kilograms), the cloth belt and the zipper teeth can deform greatly, the quality and the stability of a zipper product are seriously affected, and therefore the tight wrapping force of the zipper teeth on the forming rod can be eliminated before mold opening by the aid of equipment in urgent need, and the pulling force borne by the zipper when the zipper is pulled out is reduced.

The Chinese patent document discloses a plastic steel zipper tooth arrangement mold (No. CN 205853257U), which comprises an upper mold and a lower mold, wherein a cloth belt cavity consisting of an upper cloth belt groove and a lower cloth belt groove and an injection molding cavity consisting of an upper chain tooth groove and a lower chain tooth groove are arranged on the joint surface of the upper mold and the lower mold, a strip-shaped groove is arranged in the middle of the lower chain tooth groove, a molding rod is arranged in the strip-shaped groove, limiting steps are arranged at two ends of the molding rod, a limiting clamping block and a bolt for fixing the molding rod are arranged at two ends of the lower mold, a first pin hole is arranged at each end of the lower mold, the limiting clamping block is matched with the limiting step of the molding rod, a second pin hole is arranged on the limiting clamping block, the bolt passes through the first pin hole and the second pin hole to fix the limiting clamping block on the limiting step of the molding rod, a push rod is also arranged at the bottom of the lower, the lower die is provided with a second cooling water hole. The patent discloses a forming rod and a push rod, however, the push rod can only push the forming rod to move up and down, and cannot eliminate the wrapping force of the zipper teeth on the forming rod.

The Chinese patent document discloses a zipper mold (No. CN 201586729U), which comprises an upper mold plate and a lower mold plate, wherein the upper mold plate and the lower mold plate are matched to form a cavity, water ways for cooling the cavity are respectively arranged on the upper mold plate and the lower mold plate, a pouring channel is arranged in the cavity of the upper mold plate, two strip-shaped grooves with certain included angles are arranged on the lower mold plate and used for placing a core pulling rod capable of ejecting and forming a zipper, and the core pulling rod is controlled by an oil cylinder. The two ends of the core-pulling rod are support legs, the support legs are connected with the oil cylinder and controlled by the oil cylinder, the core-pulling rod is arranged in a lower template and a strip-shaped groove matched with the lower template, and the strip-shaped groove and a vertical surface form 14 degrees. The zipper ribbon used in the invention is in the process of weaving the zipper ribbon, i.e. the conductive wire and the woven ribbon are woven into a whole, after the alloy is melted, the zipper ribbon woven with the conductive wire is put into a casting mould cavity, and is cast for molding, cooling and demoulding; the molded sprocket has smooth and round surface and uniform pitch, and ensures smooth drawing. The patent discloses a core-pulling rod and an oil cylinder, but the oil cylinder only has the function of controlling the jacking or jacking of the core-pulling rod, and cannot eliminate the tightening force of the zipper teeth on the forming rod.

Disclosure of Invention

The invention provides a production mold of a plastic steel zipper and a using method thereof, and mainly aims to overcome the defect that the quality and the stability of a zipper product are influenced because the existing plastic steel zipper production mold cannot eliminate the wrapping force of zipper teeth on a forming rod before mold opening.

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides a production mould of plastic steel zip fastener, includes mould and lower mould, it all is equipped with the chain tooth groove that is used for placing the trough of cloth and is used for moulding plastics chain tooth to go up mould and lower mould, go up the mould the trough of cloth with the lower mould the trough of cloth cooperatees from top to bottom, go up the mould the chain tooth groove with the lower mould the chain tooth groove cooperatees from top to bottom, the lower mould the bar groove has still been seted up at chain tooth groove middle part, and this bar groove internalization inlays and is equipped with the shaping stick, still includes a drive mechanism, drive mechanism is through a push rod drive control the shaping stick along the bar groove removes.

Furthermore, the transmission mechanism can control the forming rod to move forwards in the strip-shaped groove in a transmission mode after the upper die and the lower die are closed, and the moving stroke is 0.001-8 mm.

Furthermore, the transmission mechanism is one of an air cylinder, an oil cylinder and a motor.

Furthermore, the output end of the transmission mechanism is connected with the push rod and controls the push rod to move up and down.

Furthermore, the front side of the push rod is provided with an upward inclined surface, the rear side of the forming rod is provided with a downward inclined surface, and the inclined surface of the push rod is mutually abutted with the inclined surface of the forming rod.

The device further comprises an ejection mechanism arranged on the lower side of the lower die and used for ejecting the forming rod after the upper die and the lower die are opened.

The use method of the production mold of the plastic steel zipper comprises the following steps:

1) placing a zipper cloth belt in a cloth belt groove of a lower die, closing an upper die and the lower die to enable the upper die to abut against a forming rod embedded in a strip-shaped groove of the lower die, and injecting molten injection molding raw materials into a chain tooth groove of the upper die and a chain tooth groove of the lower die to enable plastic steel chain teeth to be subjected to injection molding;

2) controlling the stroke of separating the upper die and the lower die by 0.001-1.0 mm, starting a transmission mechanism to move the push rod upwards, applying an acting force to the downward inclined surface at the rear side of the forming rod by the upward inclined surface at the front side of the push rod, and moving the forming rod forwards by 0.001-8 mm relative to the injection-molded plastic steel zipper teeth along the strip-shaped groove;

3) and opening the upper die and the lower die, enabling the upper die to be separated from the forming rod, enabling an ejection mechanism positioned on the lower side of the lower die to act, ejecting the forming rod upwards, enabling the injection-molded plastic steel zipper teeth to be separated from the zipper teeth groove of the lower die along with the forming rod, and finally pulling the zipper cloth belt and the plastic steel zipper teeth through an external pulling mechanism to separate the plastic steel zipper teeth from the forming rod.

Compared with the prior art, the invention has the beneficial effects that:

the invention has simple structure and strong practicability, and the transmission mechanism is arranged to ensure that before the upper die and the lower die are opened, the transmission mechanism can firstly control the forming rod to move relative to the plastic steel zipper teeth along the strip-shaped groove, thereby eliminating the wrapping force of the plastic steel zipper teeth on the forming rod, reducing the tensile force born by the injection-molded zipper when pulled out from more than 10 kilograms to less than 1 kilogram, and therefore eliminating the quality defects that the zipper cloth belt produced by the action of huge tensile force of the zipper produced by the prior art is stretched, the space and the stability of the zipper teeth can not be effectively controlled, further leading the mechanical property (or physical property) and the zipper feel of the zipper to be poor and unstable, the zipper seam can arch on the clothes and the luggage, and the like.

Drawings

FIG. 1 is a side view of the present invention.

Fig. 2 is a rear side view of the present invention.

FIG. 3 is a schematic front view of the present invention.

Fig. 4 is a plan view of the lower mold of the present invention.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

Reference is made to fig. 1, 2, 3 and 4. The utility model provides a production mould of plastic steel zip fastener, including last mould 1 and lower mould 2, it all is equipped with the chain tooth groove 4 that is used for placing cloth trough 3 and is used for the chain tooth of moulding plastics to go up mould 1 and lower mould 2, the cloth trough of going up mould 1 cooperatees from top to bottom with the cloth trough of lower mould 2, the chain tooth groove of going up mould 1 cooperatees from top to bottom with the chain tooth groove of lower mould 2, bar groove 5 has still been seted up at 4 middle parts in the chain tooth groove of lower mould 2, this bar groove 5 internalization inlays and is equipped with shaping stick 6, furthermore, still include a drive mechanism 7, this drive mechanism removes along bar groove 5 through 8 transmission control shaping sticks 6 of catch. Through setting up drive mechanism 7, make go up mould 1 and lower mould 2 before the die sinking, drive mechanism 7 can control earlier that shaping stick 6 removes along the relative plastic steel chain tooth of bar recess 5, thereby eliminate the packing power of plastic steel chain tooth to shaping stick 6, make the pulling force that bears when injection moulding's zip fastener is pulled out originally by more than 10 kilograms drop to below 1 kilogram, consequently eliminated the zip fastener strap that prior art production produced because of the effect of huge pulling force is elongated, zip fastener chain tooth interval and stability can not obtain effective control, and then lead to zip fastener mechanical properties (or physical properties) and zip fastener to draw and feel relatively poor and unstable, and the zip fastener seam can arch at clothing and case and bag chain tooth and so on quality defect.

Reference is made to fig. 1, 2, 3 and 4. Specifically, the transmission mechanism 7 can control the forming rod 6 to move forwards in the strip-shaped groove 5 in a transmission mode after the upper die 1 and the lower die 2 are closed, and the moving stroke is 0.001-8 mm. The transmission mechanism can be one of an air cylinder, an oil cylinder and a motor.

Reference is made to fig. 1, 2, 3 and 4. Specifically, the output end of the transmission mechanism 7 is connected with the push rod 8 and controls the push rod 8 to move up and down. The front side of the push rod 8 is provided with an upward inclined surface 81, the rear side of the forming rod 6 is provided with a downward inclined surface 61, the inclined surface 81 of the push rod 8 is mutually interfered with the inclined surface 61 of the forming rod 6, and the push rod 8 can push the forming rod 6 to move forwards. In addition, still can be at the connecting spring between catch bar and the shaping stick for behind the catch bar reconversion, the shaping stick can reconversion under the effect of spring.

Reference is made to fig. 1, 2, 3 and 4. The device also comprises an ejection mechanism 9 arranged on the lower side of the lower die 2 and used for ejecting the forming rod 6 after the upper die 1 and the lower die 2 are opened. The ejection mechanism 9 may be one of an air cylinder, an oil cylinder and a motor, and the ejection mechanism pushes up the forming rod 6 by abutting against the bottom end of the forming rod after the ejection mechanism moves.

Reference is made to fig. 1, 2, 3 and 4. The use method of the production mold of the plastic steel zipper comprises the following steps:

1) placing a zipper cloth belt in a cloth belt groove 3 of a lower die 2, then closing an upper die 1 and the lower die 2 to enable the upper die 1 to abut against a forming rod 6 embedded in a strip-shaped groove 5 of the lower die 2, enabling the forming rod 6 not to move up and down, and then injecting molten injection molding raw materials into a zipper tooth groove 4 of the upper die 1 and a zipper tooth groove 4 of the lower die 2 to enable plastic steel zipper teeth to be injection molded;

2) controlling the stroke of separating the upper die and the lower die by 0.001-1.0 mm (the stroke can be separated to be larger according to the difference of zipper teeth), then starting the transmission mechanism 7 to enable the push rod 8 to move upwards, and enabling the upward inclined surface 81 at the front side of the push rod 8 to apply acting force to the downward inclined surface 61 at the rear side of the forming rod 6 to enable the forming rod 6 to move forwards by 0.001-8 mm relative to the injection-molded plastic steel zipper teeth along the strip-shaped groove 5; the plastic steel zipper teeth are clamped in the zipper tooth grooves 4 and cannot move, and after the forming rod 6 is subjected to the action force of the pushing rod 8 inclining upwards, the upper part of the forming rod is pressed and cannot move up and down, so that the forming rod 6 can only move forwards, and the wrapping force of the plastic steel zipper teeth on the forming rod 6 is eliminated;

3) and (3) opening the upper die 1 and the lower die 2, enabling the upper die 1 to be separated from the forming rod 6, enabling an ejection mechanism 8 positioned on the lower side of the lower die to act, ejecting the forming rod 6 upwards, enabling the injection-molded plastic steel zipper teeth to be separated from the zipper tooth grooves 4 of the lower die 2 along with the forming rod 6, and finally pulling the zipper cloth belt and the plastic steel zipper teeth through an external pulling mechanism to separate the plastic steel zipper teeth from the forming rod.

The above description is only an embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept should fall within the scope of infringing the present invention.

Claims

1. The utility model provides a production mould of plastic steel zip fastener, includes mould and lower mould, it all is equipped with the chain tooth groove that is used for placing the trough of cloth and is used for moulding plastics chain tooth to go up mould and lower mould, the trough of cloth of going up the mould with cooperate from top to bottom in the trough of cloth of lower mould, the chain tooth groove of going up the mould with cooperate from top to bottom in the chain tooth groove of lower mould, the bar groove has still been seted up at the chain tooth groove middle part of lower mould, and this bar groove internalization inlays and is equipped with shaping stick, its characterized in that: the forming rod is driven to move along the strip-shaped groove by a driving mechanism through a pushing rod;

the transmission mechanism can control the forming rod to move forwards in the strip-shaped groove in a transmission mode after the upper die and the lower die are assembled, and the moving stroke is 0.001-8 mm;

the output end of the transmission mechanism is connected with the push rod and controls the push rod to move up and down;

the front side of the push rod is provided with an upward inclined surface, the rear side of the forming rod is provided with a downward inclined surface, and the inclined surface of the push rod is mutually abutted to the inclined surface of the forming rod.

2. The mold for producing a plastic-steel zipper as defined in claim 1, wherein: the transmission mechanism is one of an air cylinder, an oil cylinder and a motor.

3. The mold for producing a plastic-steel zipper as defined in claim 1, wherein: the ejection mechanism is arranged on the lower side of the lower die and used for ejecting the forming rod after the upper die and the lower die are opened.

4. The use method of the production mold of the plastic steel zipper is characterized by comprising the following steps:

1) placing a zipper cloth belt in a cloth belt groove of a lower die, closing an upper die and the lower die to enable the upper die to abut against a forming rod embedded in a strip-shaped groove of the lower die, and then injecting molten injection molding raw materials into a chain tooth groove of the upper die and a chain tooth groove of the lower die to enable plastic steel chain teeth to be subjected to injection molding;