Invisible zipper head die

Abstract

The utility model discloses an invisible zipper head mold which comprises a fixed mold plate and a movable mold plate, the fixed mold plate and the movable mold plate are connected through a guide column and a guide sleeve, and a plurality of sets of forming mold cores which are symmetrical in pairs are distributed on the surface, facing the fixed mold plate, of the movable mold plate in a rectangular array mode. A plurality of forming cavities are distributed in the surface, facing the movable mold plate, of the fixed mold plate in a rectangular array mode, openings are formed in the bottoms of the forming cavities, lifting bottom plates are installed at the bottoms of the forming cavities in an up-down sliding mode, two matched mold cores are fixed to the inner sides of the forming cavities, and movable matching strips are movably installed on one sides of the matched mold cores. And an extrusion strip is mounted between the movable matching strip and the matching mold core in a sliding manner. After forming is finished, the miniature electric telescopic rod drives the extrusion strip to be separated from the position between the movable matching strip and the matching mold core, the movable matching strip is driven by the reset tension spring to be close to the matching mold core, the formed invisible zipper head cannot be hindered by the movable matching strip during demolding, and the demolding difficulty is lowered.

Description

Technical Field

[0001] The utility model relates to the technical field of invisible zipper head moulds, in particular to an invisible zipper head mould. Background Art

[0002] Invisible zippers are composed of chain teeth, sliders, limit stops (front and back stops) or locking parts. Chain teeth are the key part, which directly determines the side pull strength of the zipper. Generally, invisible zippers have two chain belts, each with a row of chain teeth, and the two rows of chain teeth are staggered. Invisible zippers are mainly used in down jackets, jeans, leather clothes, high-end jackets, winter clothes, etc.

[0003] The slider is also called the zipper head. Its main function is to adjust the opening and closing degree of the zipper. The zipper head usually includes a zipper head, a slider and a locking buckle. The slider can slide on the spine of the zipper head to control the opening and closing of the zipper.

[0004] However, the invisible zipper head is difficult to demould because it is blocked by the core inside. Therefore, it does not meet the existing needs. For this reason, we proposed an invisible zipper head mold. Utility Model Content

[0005] The purpose of the present invention is to provide a hidden zipper head mold to solve the problem that the hidden zipper head is difficult to demould due to the obstruction of the core inside the hidden zipper head when demoulding.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an invisible zipper head mold, comprising a fixed template and a movable template, the fixed template and the movable template are connected by guide columns and guide sleeves, a plurality of groups of two-way symmetrical molding cores are distributed in a rectangular array on the surface of the movable template facing the fixed template, a plurality of molding cavities are distributed in a rectangular array on the surface of the fixed template facing the movable template, the bottom of the molding cavity is open, a lifting base plate is installed on the bottom of the molding cavity for sliding up and down, two mating cores are fixed on the inner side of the molding cavity, a movable mating strip is movably installed on one side of the mating core, an extrusion strip is slidably installed between the movable mating strip and the mating core, a micro electric telescopic rod is fixed to one end of the extrusion strip, and the micro electric telescopic rod is fixed inside the fixed template.

[0007] Preferably, a through strip groove is provided in the middle of the end portion of the extrusion strip located between the matching core and the movable matching strip, and one end of the strip groove is open and flush with one end of the extrusion strip.

[0008] Preferably, a guide support tube is slidably installed between the movable matching strip and the matching core, and the guide support tube passes through the strip groove.

[0009] Preferably, a reset spring is inserted through the middle of the guide support tube, and both ends of the reset spring are fixed to the matching core and the movable matching strip respectively.

[0010] Preferably, an inclined surface is provided on the inner side of the end of the movable matching strip close to the micro electric telescopic rod, and a filling block is fixed on the outer side of the end of the extrusion strip connected to the micro electric telescopic rod.

[0011] Preferably, the end of the filling block that contacts the movable matching strip is a slope, and the inclination angles of the slope of the end of the movable matching strip and the end of the filling block are both 45 degrees.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] After the molding is completed, the micro electric telescopic rod drives the extrusion strip to separate from the movable matching strip and the matching core. The movable matching strip is driven by the reset tension spring to move closer to the matching core, so that the formed invisible zipper head will not be hindered by the movable matching strip when demoulding, thereby reducing the difficulty of demoulding. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 for Figure 1 A magnified view of the structure at point A;

[0016] Figure 3 This is a structural sectional view of the fixed template of the utility model;

[0017] Figure 4 It is a schematic cross-sectional view of the extruded strip of the present invention.

[0018] In the figure: 1. Fixed template; 2. Moving template; 3. Molding core; 4. Molding cavity; 5. Matching core; 6. Moving matching strip; 7. Extrusion strip; 8. Filling block; 9. Micro electric telescopic rod; 10. Guide support tube; 11. Reset spring; 12. Lifting base plate. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] like Figures 1 to 4As shown, the invisible zipper head mold includes a fixed template 1 and a movable template 2, which are connected by guide columns and guide sleeves. A plurality of groups of two-way symmetrical molding cores 3 are distributed in a rectangular array on the surface of the movable template 2 facing the fixed template 1, and a plurality of molding cavities 4 are distributed in a rectangular array on the surface of the fixed template 1 facing the movable template 2. The bottom of the molding cavity 4 is open, and a lifting bottom plate 12 is installed on the bottom of the molding cavity 4 for sliding up and down. Two matching cores 5 are fixed on the inner side of the molding cavity 4, and a movable matching strip 6 is movably installed on one side of the matching core 5. An extrusion strip 7 is slidably installed between the movable matching strip 6 and the matching core 5, and a micro-electric telescopic rod 9 is fixed to one end of the extrusion strip 7. The micro-electric telescopic rod 9 is fixed inside the fixed template 1, and the extrusion strip 7 is pushed to move by the micro-electric telescopic rod 9 to change the distance between the movable matching strip 6 and the matching core 5. When the movable matching strip 6 is close to the matching core 5, the molded zipper head does not contact the movable matching strip 6, thereby reducing the difficulty of demolding the molded zipper head.

[0021] The extrusion strip 7 is located between the mating core 5 and the moving mating strip 6, and a through strip groove is provided in the middle of the end portion. One end of the strip groove is open and the end portion is flush with one end of the extrusion strip 7. A guide support tube 10 is slidably installed between the moving mating strip 6 and the mating core 5. The guide support tube 10 passes through the strip groove, and a reset spring 11 is inserted through the middle of the guide support tube 10. The two ends of the reset spring 11 are respectively fixed to the mating core 5 and the moving mating strip 6. The mating core 5 and the moving mating strip 6 are connected by the reset spring 11 and the guide support tube 10 to ensure that after the extrusion strip 7 is separated from the mating core 5 and the moving mating strip 6, the moving mating strip 6 can approach the direction of the mating core 5. At the same time, the guide support tube 10 is used to support the position of the moving mating strip 6 to ensure that the moving mating strip 6 is flush with the mating core 5.

[0022] An inclined slope is provided on the inner side of the end of the mobile matching strip 6 close to the micro electric telescopic rod 9, and a filling block 8 is fixed to the outer side of the end where the extrusion strip 7 is connected to the micro electric telescopic rod 9. The end of the filling block 8 in contact with the mobile matching strip 6 is a slope. The inclination angle of the slope at the end of the mobile matching strip 6 and the end of the filling block 8 are both forty-five degrees, ensuring that the extrusion strip 7 can smoothly enter between the mobile matching strip 6 and the matching core 5, and fit the filling block 8 to fill the gap between the mobile matching strip 6 and the extrusion strip 7, thereby ensuring the smooth molding of the invisible zipper head.

[0023] Working principle: First, turn on the power supply of the mold and start it. The movable platen 2 moves toward the fixed platen 1 and fits into the fixed platen 1 under the drive of the pressure mechanism of the mold. After the movable platen 2 fits into the fixed platen 1, the molding core 3 enters the molding cavity 4. Then the micro electric telescopic rod 9 is powered on and starts to push the extrusion bar 7 between the matching core 5 and the moving matching bar 6. After the end of the extrusion bar 7 contacts the inclined surface of the end of the moving matching bar 6, the moving matching bar 6 is pushed away from the matching core 5. At the same time, the reset tension spring 11 is pulled up until the end of the extrusion bar 7 contacts the matching core 5. At this time, the filling block 8 and the moving matching bar 6 are in contact. After the molding is completed, the injection molding equipment is started to inject the raw material into the molding cavity 4. Next, the raw material in the molding cavity 4 is cooled to form an invisible zipper head. After the molding cavity 4 is formed, the micro electric telescopic rod 9 drives the extrusion strip 7 to retract, so that the reset spring 11 drives the movable matching strip 6 to approach the matching core 5. At this time, the movable matching strip 6 is separated from the invisible zipper head, and the movable template 2 moves upward under the drive of the mold hydraulic mechanism. At the same time, the lifting bottom plate 12 drives the formed invisible zipper head to move downward, so that the matching core 5 and the movable matching strip 6 are separated from the invisible zipper head, reducing the difficulty of demolding the formed invisible zipper head.

[0024] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. An invisible zipper head mold, comprising a fixed mold plate (1) and a movable mold plate (2), wherein the fixed mold plate (1) and the movable mold plate (2) are connected by guide pins and guide sleeves, and characterized in that: A plurality of groups of two-by-two symmetrical molding cores (3) are distributed in a rectangular array on the surface of the movable plate (2) facing the fixed plate (1); a plurality of molding cavities (4) are distributed in a rectangular array on the surface of the fixed plate (1) facing the movable plate (2); the bottom of the molding cavity (4) is open; a lifting base plate (12) is installed on the bottom of the molding cavity (4) for sliding up and down; two matching cores (5) are fixed on the inner side of the molding cavity (4); a movable matching strip (6) is movably installed on one side of the matching core (5); an extrusion strip (7) is slidably installed between the movable matching strip (6) and the matching core (5); a micro electric telescopic rod (9) is fixed to one end of the extrusion strip (7); and the micro electric telescopic rod (9) is fixed inside the fixed plate (1).

2. The invisible zipper slider mold according to claim 1, characterized in that: A through strip groove is provided in the middle of the end of the extrusion strip (7) between the matching core (5) and the movable matching strip (6); one end of the strip groove is open and the end is flush with one end of the extrusion strip (7).

3. The invisible zipper slider mold according to claim 2, characterized in that: A guide support tube (10) is slidably installed between the movable matching strip (6) and the matching core (5), and the guide support tube (10) passes through the strip groove.

4. The invisible zipper slider mold according to claim 3, characterized in that: A reset spring (11) is inserted through the middle of the guide support tube (10), and both ends of the reset spring (11) are fixed to the matching core (5) and the movable matching strip (6) respectively.

5. The invisible zipper slider mold according to claim 1, characterized in that: An inclined surface is provided on the inner side of the end of the movable matching strip (6) close to the micro electric telescopic rod (9), and a filling block (8) is fixed on the outer side of the end of the extrusion strip (7) connected to the micro electric telescopic rod (9).

6. The invisible zipper slider mold according to claim 5, characterized in that: The end of the filling block (8) in contact with the movable matching strip (6) is a slope, and the inclination angles of the slope of the end of the movable matching strip (6) and the end of the filling block (8) are both 45 degrees.

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