Pen rear plug injection mold

Abstract

The utility model discloses a pen rear plug injection mold which comprises a movable module, a static module, a middle plate, a peripheral pull rod and a mold splitting limiting mechanism, the peripheral pull rod and the mold splitting limiting mechanism are respectively fixed on the movable module and the static module, a six-point splitter plate is further arranged on the movable module, and injection molding sub-runners corresponding to six groups of hot nozzles are arranged in the six-point splitter plate. Each hot nozzle corresponds to a cavity plate formed between the movable die set and the static die set, and each group of cavity plates is provided with thirty-two die cavities; according to the mold, the production cost of the penholder is reduced through the design of the six-point hot nozzles, the economic benefit is improved, the mold is opened and limited, a pull rod is arranged on the periphery of the mold frame, disassembly, assembly, maintenance and repair of a single side are facilitated, the six independent hot nozzles are arranged in the mold, and each hot nozzle is provided with a complete injection molding cavity and a runner system, so that the production efficiency is improved. And it is ensured that each pen holder can independently and evenly receive the molten plastic material, it is ensured that each injection molding station can be evenly and rapidly filled with the molten plastic, and the quality consistency of all the pen holders is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field, concretely relates to a pen back plug injection mold. BACKGROUND

[0002] Injection mold is a kind of tool for producing plastic product, and is also the tool for giving plastic product complete structure and accurate size.Injection molding is a kind of processing method used when mass producing some parts with complex shape, which refers to the process that hot molten material is injected into the mold cavity formed by the dynamic mold and static mold, the mold is cooled first by the cooling liquid in the cooling channel set around the mold cavity, then the material in the mold cavity is cooled and solidified, and finally the dynamic mold is driven to separate from the static mold to obtain the injection molding product.

[0003] The traditional pen back plug injection mold is designed backward and is insufficient for mass production, and the single-mold product is not high, so with the increasing demand of market for pen products, improving production efficiency and reducing production cost become the problems to be solved in stationery manufacturing industry, in addition, the cylindrical limiting rod or mold opening guide pillar of traditional mold is generally built-in the inner side of mold, which is very inconvenient when the mold is disassembled and decomposed, affects the mold disassembly and repair time, and the utilization rate and space occupancy rate of the mold are not ideal. UTILITY MODEL CONTENT

[0004] In view of the prior art, the utility model aims at providing a pen back plug injection mold, which is designed by six hot nozzles, and the mold opening limiting and pull rod are all installed on the periphery of mold frame, so as to improve the production efficiency of back plug, reduce production cost and facilitate the unilateral disassembly, repair and maintenance.

[0005] In order to achieve the above purpose, the utility model adopts the technical scheme that a pen back plug injection mold, which comprises a dynamic mold group, a static mold group, a peripheral pull rod fixed on the dynamic mold group and the static mold group and a mold opening limiting mechanism, a six-point flow distribution plate is further arranged on the dynamic mold group, injection flow distribution channels corresponding to six groups of hot nozzles are arranged in the six-point flow distribution plate, each hot nozzle is located between the dynamic mold group and the static mold group to form a cavity plate, and each cavity plate is provided with thirty-two mold cavities.

[0006] As a further setting of the above scheme, the peripheral pull rod is fixed at one end on the dynamic mold group or the static mold group, and a step groove is arranged on the mold plate close to the middle plate of the static mold group and the dynamic mold group, and a through groove is arranged on the middle plate.

[0007] As a further setting of the above scheme, the mold opening limiting mechanism comprises a limiting column and a limiting plate, the limiting column is provided with a limiting block, and the limiting plate is provided with a limiting block.

[0008] As a further setting of the above scheme, the limit stop is provided with two groups of templates and middle plates fixed on the static die set close to the middle plate, and the limit blocks are arranged on the templates and middle plates close to the middle plate of the dynamic die set.

[0009] As a further setting of the above scheme, the parting limit mechanism is further provided with square guide columns and brass guide blocks arranged on both sides of the square guide columns, and the square guide columns are further provided with air shallow grooves.

[0010] Beneficial effects: The mold of the utility model reduces the production cost of the pen barrel through the 6-point hot nozzle design, improves economic benefits, and installs the mold opening limit and pull rod on the periphery of the mold frame, which facilitates unilateral disassembly, repair and maintenance, the 6 independent hot nozzles in the mold are each equipped with a complete injection cavity and a runner system, ensuring that each pen barrel can independently and uniformly receive molten plastic material, ensuring that the molten plastic can be uniformly and quickly filled into each injection station, and ensuring the quality consistency of the pen barrels. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a structure schematic view of the pen rear plug injection mold of the utility model.

[0012] Figure 2 It is a structure schematic view of the six-point distribution plate in the dynamic die set of the embodiment.

[0013] Figure 3 It is a structure schematic view of the mold cavity plate cavity in the mold of the embodiment.

[0014] Figure 4 It is a structure schematic view of the mold distribution plate hot nozzle of the embodiment.

[0015] Figure 5 It is a structure schematic view of the peripheral pull rod and the mold set of the embodiment.

[0016] Figure 6 It is a structure schematic view of the maximum mold opening of the mold of the embodiment.

[0017] Reference signs: 1, dynamic die set; 2, static die set; 3, middle plate; 4, peripheral pull rod; 41, step groove; 42, through groove; 5, parting limit mechanism; 51, limit column rod; 52, limit plate; 53, square guide column; 54, limit stop; 55, limit block; 56, brass guide block; 57, air shallow groove; 6, six-point distribution plate; 61, injection distribution channel; 62, hot nozzle; 7, cavity plate; 8, mold cavity. DETAILED DESCRIPTION

[0018] In order to enable the above-mentioned purposes, features and advantages of the present application to be more clearly understood, the present application will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0019] As shown in Figures 1-6 A pen back plug injection mold, comprising a movable die set 1, a static die set 2, and a middle plate 3, a peripheral pull rod 4 and a parting limiting mechanism 5 are fixed on the movable die set 1 and the static die set 2, respectively, a six-point distribution plate 6 is further arranged on the movable die set 1, injection distribution channels 61 are arranged in the six-point distribution plate 6, corresponding to six groups of hot nozzles 62, each hot nozzle 62 corresponds to a cavity plate 7 formed between the movable die set 1 and the static die set 2, and each group of cavity plates 7 is provided with thirty-two cavities 8.

[0020] As a further arrangement of the above-mentioned scheme, the peripheral pull rod 4 is C-shaped and fixed at one end on the movable die set 1 or the static die set 2, the static die set 2 and the movable die set 1 are provided with step grooves 41 on the mold plate 21 close to the middle plate 3, and the middle plate 3 is provided with a through groove 42.

[0021] As a further arrangement of the above-mentioned scheme, the parting limiting mechanism 5 comprises a limiting column 51 and a limiting plate 52, the limiting column 51 is provided with a limiting block 54, and the limiting plate 52 is provided with a limiting block 55.

[0022] As a further arrangement of the above-mentioned scheme, the limiting block 54 is provided with two groups of limiting blocks 54 fixed on the mold plate 21 close to the middle plate 3 of the static die set 2 and the middle plate 3, respectively, and the limiting block 55 is arranged on the mold plate 21 close to the middle plate 3 of the movable die set 1 and the middle plate 3, respectively.

[0023] As a further arrangement of the above-mentioned scheme, the parting limiting mechanism 5 is further provided with a square guide column 53 and a brass guide block 56 arranged on both sides of the square guide column 53, and the square guide column 53 is further provided with a gas shallow groove 57.

[0024] As shown in Figure 1 , Figure 5 and Figure 6 The injection mold structure of the present application, the mold of the present embodiment is arranged outside the movable die set 1, the static die set 2 and the middle plate 3, and the limiting column 51, the limiting plate 52, the square guide column 53, the limiting block 54 and the limiting block 55 of the peripheral pull rod 4 and the parting limiting mechanism 5 cooperate with each other, the mold of the present embodiment can be opened and closed in the state of Figures 1 to 6 by external equipment, which is convenient for the mechanical clamping arm to stretch in to pull out the waste materials and ensure that multiple finished products can be simultaneously, quickly and losslessly taken out from the mold, and based on Figure 2 , 3The injection mold of the embodiment can produce 192 rear plugs at one time through the six-point distribution plate 6 and the six groups of hot nozzles 62 equipped with complete and independent injection cavity and runner system, and the production efficiency is greatly improved.

[0025] Further, the square guide column 53 and the self-lubricating brass guide block 56 are added to the periphery of the mold, the concentricity of the product is further increased, the pressure of the mold parting limiting mechanism 5 is reduced, and the mold is more durable.

[0026] The cylindrical limiting rod in the traditional mold is replaced by the limiting column rod 51 and the limiting plate 52 arranged outside, and compared with the prior art, the structure of the peripheral pull rod 4, the limiting column rod 51 and the limiting plate 52 is more durable and convenient to disassemble the mold, and the mold is convenient to maintain and repair, and the mold maintenance time is reduced.

[0027] Obviously, those skilled in the art can make various modifications and variations to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model belong to the scope of the utility model scheme and its equivalent technology, the utility model also intends to include these modifications and variations.

Claims

1. A pen back stop injection mold characterized by: The utility model relates to a six-point injection mould, which comprises a movable mould group (1), a static mould group (2), a middle plate (3), peripheral pull rods (4) and a parting limiting mechanism (5) fixed on the movable mould group (1) and the static mould group (2), and a six-point parting plate (6) arranged on the movable mould group (1), wherein the six-point parting plate (6) is provided with injection parting channels (61) corresponding to six groups of hot nozzles (62), each hot nozzle (62) corresponds to a cavity plate (7) formed between the movable mould group (1) and the static mould group (2), and each cavity plate (7) is provided with thirty-two cavities (8). The parting limiting mechanism (5) comprises a limiting column (51) and a limiting plate (52), the limiting column (51) is provided with a limiting block (54), and the limiting plate (52) is provided with a limiting block (55). The limiting block (54) is provided with two groups of limiting blocks fixed on the static mould group (2) and the middle plate (3) close to the template (21) of the middle plate (3), and the limiting block (55) is arranged on the template (21) of the movable mould group (1) and the middle plate (3) close to the middle plate (3). The parting limiting mechanism (5) is further provided with square guide columns (53) and brass guide blocks (56) arranged on both sides of the square guide columns (53), and the square guide columns (53) are further provided with air grooves (57).

2. The mold according to claim 1, wherein: The peripheral pull rod (4) is C-shaped and fixed on the movable mould group (1) or the static mould group (2) at one end, the static mould group (2) and the movable mould group (1) are provided with step grooves (41) on the template (21) close to the middle plate (3), and the middle plate (3) is provided with a through groove (42).

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