A zipper tooth injection molding equipment that facilitates quick mold changes

Abstract

This utility model discloses a zipper tooth injection molding equipment that facilitates rapid mold change. It includes a frame, a feeding mechanism on the upper left side of the frame, and a molding mechanism on the upper right side. The molding mechanism comprises a fixed mold plate and a moving mold plate. Guide pillars are fixed at the four corners of the fixed mold plate, and a molding die is placed between them. The right end of the guide pillars is connected to a power system, which is connected to the moving mold plate via a pull rod. A conical mold gate is located on the left side of the fixed mold plate. In the feeding mechanism, a motor drives spiral conveying blades to transport the raw material through a heated cylinder to the nozzle. The equipment achieves rapid mold positioning and replacement through precise guidance from the guide pillars, shortening mold change time and improving production efficiency. The spiral blades stably transport the raw material, ensuring uniform injection volume. The conical gate optimizes the material flow path, improving product molding quality. This equipment effectively solves the problems of slow mold change and low production efficiency in traditional injection molding equipment and is suitable for the efficient production of various specifications of zipper teeth.

Description

Technical Field

[0001] This utility model relates to the field of injection molding, specifically to an injection molding equipment for zipper teeth that facilitates quick mold changes. Background Technology

[0002] In modern industrial production, zippers, as essential accessories widely used in clothing, bags, outdoor equipment, and other fields, are experiencing continuous market demand growth and increasingly diversified product specifications. Zipper teeth, as the core component of zippers, directly impact the overall performance of the zipper and the economic benefits of the enterprise through their quality and production efficiency. Currently, zipper teeth are mostly produced using injection molding equipment; however, traditional zipper tooth injection molding equipment faces many problems in practical applications that urgently need to be addressed.

[0003] From a mold-changing operation perspective, the mold replacement process of traditional injection molding equipment is cumbersome and complex, often requiring a significant amount of time and manpower. Mold positioning and installation rely on manual adjustments, which not only makes it difficult to guarantee accuracy but also results in extremely low mold-changing efficiency. When companies need to produce zipper teeth of different specifications and shapes to meet diverse market demands, frequent mold-changing operations lead to prolonged equipment downtime, significantly reducing production efficiency and increasing production costs. Furthermore, inaccurate positioning during mold changes can easily lead to accelerated mold wear, further affecting product quality and equipment lifespan. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model aims to provide a zipper tooth injection molding equipment that facilitates rapid mold change. In the molding mechanism, multiple sets of guide pillars fixed at the four corners of the fixed mold platen, a moving mold platen, and the molding mold are arranged in conjunction with a power system that drives the moving mold platen along the guide pillars via a pull rod. This achieves stable mold opening and closing, effectively improving the problems of poor mold opening and closing and low power drive efficiency in traditional equipment. Regarding the feeding mechanism, a motor-driven spiral conveyor blade rotates, stably and efficiently conveying raw materials through a heated barrel to the nozzle, avoiding material blockage and accumulation, and ensuring uniform injection volume. Simultaneously, the conical mold gate extending inward from the left side of the fixed mold platen optimizes the flow path of the plastic raw material, reducing defects such as insufficient filling. The rapid mold change function, through the rational layout and coordination of various components, reduces manual intervention, enabling rapid and accurate mold positioning and replacement, thereby improving production efficiency, reducing production costs, enhancing product quality and equipment stability, and meeting the higher requirements of enterprises for zipper tooth production.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a zipper tooth injection molding equipment that facilitates quick mold changing, a frame, wherein a feeding mechanism is fixed at the upper left side of the frame, characterized in that a molding mechanism is fixed at the upper right side of the frame;

[0008] Preferably, the forming mechanism includes a fixed template and a movable template. Multiple sets of guide pillars are fixed at the four corners of the fixed template. A forming mold is provided between the fixed template and the movable template. A power system is movably provided at the right end of the guide pillars. The power system and the movable template are connected by a tie rod.

[0009] Preferably, the fixed template and the moving template are set coaxially.

[0010] Preferably, the feeding mechanism includes a machine base, a motor is fixed on the left side of the machine base, a heating cylinder is fixed on the right side of the machine base, a conveying blade is provided inside the heating cylinder, the central shaft end of the conveying blade is fixedly connected to the output shaft end of the motor, and a nozzle is provided at the right end of the heating cylinder.

[0011] Preferably, an opening is provided at the upper left end of the material cylinder, and a feed cylinder is fixed at the upper end of the opening.

[0012] Preferably, the conveying blades are helical.

[0013] Preferably, the left side of the fixed template is provided with an inwardly extending conical mold gate.

[0014] (III) Beneficial Effects

[0015] This utility model describes a zipper tooth injection molding equipment that facilitates rapid mold change. By incorporating guide pillars at the four corners of the fixed mold platen in the molding mechanism, and coordinating with the power system to drive the moving mold platen via pull rods, it achieves rapid and precise mold opening and closing, significantly shortening mold change time, reducing equipment downtime losses, and substantially improving production efficiency. The motor-driven spiral conveyor blades in the feeding mechanism ensure stable and efficient delivery of plastic raw materials, preventing blockages and overheating, and ensuring uniform injection volume, thereby improving raw material utilization and product qualification rates from the source. The conical mold gate extending inward from the left side of the fixed mold platen optimizes the raw material flow path, effectively solving problems such as insufficient filling and surface defects, and improving the molding quality of the zipper teeth. The overall structural design is reasonable, not only reducing the need for manual intervention and labor costs, but also reducing mold wear and extending equipment lifespan through precise positioning and stable operation. Ultimately, it achieves a dual improvement in zipper tooth production efficiency and quality, significantly reducing production costs and enhancing the core competitiveness of enterprises in the fierce market competition. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the entire present invention.

[0017] Figure 2 This is a schematic diagram of the feeding mechanism in this utility model.

[0018] Figure 3 This is a schematic diagram of the feeding mechanism in this utility model without the heating cylinder.

[0019] Figure 4 This is a schematic diagram of the forming mechanism in this utility model.

[0020] In the diagram: 1-frame, 2-feeding mechanism, 3-forming mechanism, 21-machine base, 22-motor, 23-heating cylinder, 24-conveying blade, 25-nozzle, 26-feeding cylinder, 31-fixed mold plate, 32-moving mold plate, 33-guide pillar, 34-forming mold, 35-power system, 36-tie rod, 37-conical mold gate. Detailed Implementation

[0021] The following will refer to the appendix in the example of this utility model. Figures 1-4 The technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] like Figure 1-4 As shown, this utility model provides a zipper tooth injection molding equipment that facilitates quick mold changes. It includes a frame 1, with a feeding mechanism 2 fixed to the upper left side and a molding mechanism 3 fixed to the upper right side. The frame 1 serves as the basic support structure of the equipment, bearing the entire weight and working load of the feeding mechanism 2 and the molding mechanism 3, ensuring precise and stable installation of each component. High-strength steel is used for welding or casting, providing sufficient rigidity and resistance to deformation, preventing component displacement due to vibration during equipment operation and ensuring injection molding accuracy.

[0023] The feeding mechanism 2 includes a machine base 21. A motor 22 is fixed to the left side of the machine base 21, and a heating cylinder 23 is fixed to the right side of the machine base 21. A conveying blade 24 is provided inside the heating cylinder 23. The end of the central shaft of the conveying blade 24 is fixedly connected to the end of the output shaft of the motor 22. A nozzle 25 is provided at the right end of the heating cylinder 23. An opening is provided at the upper left end of the cylinder 23, and a feed cylinder 26 is fixed at the upper end of the opening.

[0024] The machine base 21 provides a mounting platform for the motor 22 and the heating cylinder 23, ensuring their relative positions are fixed and guaranteeing the stability of power transmission. The motor 22, as the power source, drives the conveyor blades 24 to rotate via its output shaft, providing power for the conveying of plastic raw materials. The motor speed can be adjusted by the control system, thereby controlling the material conveying speed to match the injection molding cycle. The heating cylinder 23 is equipped with heating elements that heat and melt solid plastic granules to a fluid state, providing a suitable melt for injection molding. The cylinder is made of high-temperature and corrosion-resistant alloy material, with a smooth inner wall to reduce material adhesion, and an external insulation layer to reduce heat loss. The conveyor blades 24, through the rotation of their spiral structure, push the raw material from the feed cylinder 26 to the nozzle 25, achieving continuous feeding. The shearing action of the spiral blades ensures thorough mixing of the raw material during conveying, guaranteeing uniform melting. The nozzle 25 connects the heating cylinder 23 to the mold gate 37, controlling the injection speed and pressure of the melt to ensure accurate injection of the raw material into the mold cavity. The nozzle head is matched to the gate shape and is made of wear-resistant material (hard alloy) to resist the scouring of high-speed melt.

[0025] The molding mechanism 3 includes a fixed template 31 and a movable template 32. Multiple sets of guide pillars 33 are fixed at the four corners of the fixed template 31. A molding die 34 is disposed between the fixed template 31 and the movable template 32. A power system 35 is movably disposed at the right end of the guide pillars 33. The power system 35 and the movable template 32 are connected by a tie rod 36. An inwardly extending conical mold gate 37 is disposed on the left side of the fixed template 31. The fixed template 31 and the movable template 32 are coaxially arranged.

[0026] The fixed mold plate 31 serves as the base for the mold, guiding the molten metal into the mold through the tapered mold gate 37 on the left. The moving mold plate 32 works in conjunction with the fixed mold to achieve the opening and closing of the mold. Driven by the power system 35, it moves linearly along the guide pillar 33 to complete the mold closing, pressure holding, and mold opening processes. The guide pillar 33 provides precise guidance for the movement of the moving mold plate 32, ensuring the alignment accuracy between the moving and fixed molds. During rapid mold changes, it assists the new mold in quickly finding the correct installation position, reducing manual alignment time. The forming mold 34 contains the cavity and core, determining the final shape, size, and surface quality of the zipper teeth. An internal cooling water channel is designed to carry away heat through circulating water, accelerating the cooling and solidification of the plastic.

[0027] The power system 35 provides the driving force required for the movement of the moving platen 32, enabling rapid mold opening and closing. It maintains the clamping force during injection molding to prevent the mold from opening due to injection pressure, ensuring product dimensional accuracy. Specifically, it is an electric servo system, which is standard technology and will not be elaborated further. The tie rod 36 connects the power system 35 and the moving platen 32, transmitting the driving force and allowing the moving platen to move smoothly along the guide post 33. It withstands the injection pressure inside the mold during mold closing, preventing mold deformation. The tie rod is made of high-strength alloy steel, possessing sufficient tensile strength and fatigue life. The tapered mold gate 37 guides the molten material ejected from the nozzle 25 into the mold cavity through a tapered channel, reducing flow resistance and ensuring uniform molten material filling. Simultaneously, the tapered structure prevents molten material from stagnating at the gate, reducing the generation of cold runners and lowering the product defect rate.

[0028] Working principle:

[0029] Feeding stage: After the motor 22 starts, it drives the spiral conveyor blades 24 to rotate inside the heated material cylinder 23, conveying the plastic raw material falling from the feed cylinder 26 along the cylinder axis to the right side. The heated material cylinder 23 assists in heating the raw material to melt it, and the spiral structure of the conveyor blades ensures that the raw material moves forward evenly and stably, avoiding accumulation or overheating and decomposition. The molten raw material is finally ejected through the nozzle 25, ready to be injected into the molding die.

[0030] Molding stage: The power system 35 drives the moving platen 32 to move along the guide post 33 towards the fixed platen 31 via the pull rod 36, causing the molding die 34 between the moving platen and the fixed platen to close. At this time, the nozzle 25 is aligned with the conical mold gate 37 on the left side of the fixed platen, and the molten material is injected into the mold cavity at high speed through the gate, filling and forming the zipper tooth shape. The power system maintains the mold closing pressure, allowing the material to cool and solidify within the cavity.

[0031] Mold Change Stage: When a mold needs to be changed, the power system drives the moving platen to retract and open the mold, allowing operators to quickly disassemble the old mold and install the new one. The positioning function of the guide pillar 33 ensures coaxial alignment when the new mold is installed, reducing manual adjustment time. Combined with the rapid linkage between the power system and the tie rod, efficient mold change is achieved, downtime is shortened, and it can adapt to the needs of multi-specification production.

[0032] The entire process, through stable conveying of the feeding mechanism, precise mold opening and closing and efficient injection molding of the forming mechanism, and rapid mold change design, achieves continuity, stability and flexibility in zipper tooth production, thereby improving production efficiency and product quality.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A zipper tooth injection molding equipment for easy and quick mold changing, comprising a frame (1), wherein a feeding mechanism (2) is fixed to the upper left side of the frame (1), characterized in that, A forming mechanism (3) is fixed to the upper right side of the frame (1). The forming mechanism (3) includes a fixed template (31) and a moving template (32). Multiple sets of guide pillars (33) are fixed at the four corners of the fixed template (31). A forming mold (34) is provided between the fixed template (31) and the moving template (32). A power system (35) is movably provided at the right end of the guide pillars (33). The power system (35) and the moving template (32) are connected by a tie rod (36).

2. The zipper tooth injection molding equipment for easy and quick mold change according to claim 1, characterized in that, The fixed template (31) and the moving template (32) are coaxially arranged.

3. The zipper tooth injection molding equipment for easy and quick mold change according to claim 1, characterized in that, The feeding mechanism (2) includes a machine base (21), a motor (22) is fixed on the left side of the machine base (21), a heating cylinder (23) is fixed on the right side of the machine base (21), a conveying blade (24) is provided inside the heating cylinder (23), the central shaft end of the conveying blade (24) is fixedly connected to the output shaft end of the motor (22), and a nozzle (25) is provided on the right end of the heating cylinder (23).

4. The zipper tooth injection molding equipment for easy and quick mold change according to claim 3, characterized in that, The upper left side of the heating cylinder (23) is provided with an opening, and the upper end of the opening is fixed with a feed cylinder (26).

5. The zipper tooth injection molding equipment for easy and quick mold change according to claim 3, characterized in that, The conveying blade (24) is spiral-shaped.

6. The zipper tooth injection molding equipment for easy and quick mold change according to claim 1, characterized in that, The fixed template (31) has an inwardly extending conical mold gate (37) on its left side.

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