CN211389857U - Injection mold - Google Patents

Abstract

The utility model discloses an injection mold, comprising an upper platform, a lower platform, an injection liquid tank, an upper die device, a lower die device and a cooling device; a support rod is connected between the lower platform and the upper platform, and the upper platform An injection liquid tank is installed on the top, an upper mold device is arranged at the bottom of the upper platform, and a liquid outlet is arranged at the bottom of the injection liquid tank. The mold device is arranged on the lower platform, and the side of the lower mold device is provided with a cooling device. The utility model has a simple structure, and through the cooperation of the cooling water tank and the annular pipe, the cold water between the two lower pressing dies is kept in a circulating flow state, so that the injection molding liquid in the lower pressing dies can be cooled uniformly, and the uneven cooling caused by the cooling can be prevented. The curing is not comprehensive, and when the size of the injection molded product needs to be adjusted, the sliding module is moved to change the size, so that one mold can produce multiple types of products, which reduces the production cost.

Description

Injection mold

technical field

The utility model relates to the technical field of precision equipment, in particular to an injection mold.

Background technique

Injection mold is a tool for producing plastic products, and it is also a tool for imparting complete structure and precise dimensions to plastic products. Injection molding is a processing method used in mass production of certain parts with complex shapes. The injection molding machine injects high pressure into the mold cavity, and after cooling and solidifying, a molded product is obtained. The injection mold is divided into two types: thermosetting plastic mold, automobile mold, automobile mold and thermoplastic plastic mold according to the molding characteristics; , casting molds, thermoforming molds, hot compression molds (compression molds), injection molds, etc. Among them, hot compression molds can be divided into three types: overflow type, semi-overflow type and non-overflow type. The pouring system can be divided into two types: cold runner mold and hot runner mold, which can be divided into two types: mobile type and fixed type according to the loading and unloading method.

Existing injection molds are usually injection molded in a single mold, and models with different widths are required when injecting products such as flat plates. However, modern molds generally only have one fixed cavity. If the size needs to be changed, different injection molding is required. The mold affects the efficiency of production. In addition, the existing water condensation only injects water into the lower mold, but this will cause uneven cooling in the mold, resulting in incomplete solidification, and defects such as deformation when the mold is removed.

Utility model content

The utility model aims to solve one of the technical problems in the related art at least to a certain extent. Therefore, one purpose of the present utility model is to propose an injection mold. The utility model has a simple structure, and through the cooperation of the cooling water tank and the annular pipe, the cold water between the two lower dies can be kept in a circulating flow state, so as to realize the alignment of the cold water in the lower dies. The injection-molded liquid is cooled evenly, preventing uneven cooling resulting in incomplete curing. When the size of the injection-molded product needs to be adjusted, the sliding module can be moved to change the size, so that one mold can produce multiple types of products, reducing the production cost.

An injection mold according to an embodiment of the present invention includes an upper platform, a lower platform, an injection liquid tank, an upper mold device, a lower mold device and a cooling device;

A support rod is connected between the lower platform and the upper platform, an injection liquid tank is installed on the top of the upper platform, an upper mold device is arranged at the bottom of the upper platform, and a liquid outlet is arranged at the bottom of the injection liquid tank. The liquid outlet is communicated with the injection port of the upper mold device through the telescopic tube, the lower mold device is arranged on the lower platform, and the side of the lower mold device is provided with a cooling device.

Preferably, the upper die device includes an upper die, a damping rod and a cylinder, the cylinder is installed on the bottom of the upper platform, the cylinder and the top of the upper die are connected by a damping rod, and the bottom of the upper die is connected by a damping rod. There are multiple positioning rods.

Preferably, the lower die device includes two lower dies and two sliding modules, the lower dies are installed on the lower platform in parallel, and the inner side of the lower dies is provided with a concave slide rail, the A cavity is opened in the lower die, two sliding modules are provided with sliding blocks on both sides, and the sliding blocks and the sliding rails are installed in cooperation with each other, the sliding modules are movably installed between the lower dies, and the top of the lower dies is opened There are positioning holes.

Preferably, the cooling device includes a refrigerating water tank and a water pipe, the refrigerating water tank is disposed on one side of the lower die device, and the refrigerating water tank is respectively communicated with the cavities in the two lower dies through a plurality of the water pipes, so The other side of the lower die device is provided with an annular tube, and the annular tube communicates with the two lower dies.

Preferably, a micro water pump is installed on the upper flange of the water pipe.

Preferably, the shock-absorbing rod includes a first fixing plate and a second fixing plate, one side of the first fixing plate is mounted on the bottom of the cylinder, the other side of the first fixing plate is mounted with a telescopic rod, and the second One side of the fixing plate is installed on the top of the upper die, the other side of the second fixing plate is installed with a telescopic sleeve, the telescopic rod is movably sleeved in the telescopic sleeve, and a spring is arranged in the telescopic sleeve.

The beneficial effects of the utility model are as follows: the utility model has a simple structure, and the damping rod is arranged to make the cylinder control the upper die and the lower die to produce a buffer effect, thereby prolonging the service life of the cylinder and the connecting rod. The cooperation of the annular tube keeps the cold water between the two lower dies in a circulating flow state, so that the injection molding liquid in the lower dies can be cooled evenly, preventing uneven cooling resulting in incomplete curing, and it is necessary to adjust the size of the injection molded product When the sliding module is moved, the sizes of the injection grooves formed by the upper die, the sliding die and the lower die can be changed, so that one die can produce multiple types of products, reducing the production cost.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification, and are used to explain the present invention together with the embodiments of the present invention, and do not constitute a limitation to the present invention. In the attached image:

Fig. 1 is the structural representation of the injection mould that the utility model proposes;

Fig. 2 is the structural representation of the upper die device in Fig. 1;

Fig. 3 is the structural representation of the lower die device in Fig. 1;

FIG. 4 is a top view of the lower mold device proposed in FIG. 3;

5 is a cross-sectional view of the lower die device proposed in FIG. 3;

FIG. 6 is a schematic structural diagram of the damping rod proposed in FIG. 2 .

In the picture: 1-upper platform, 2-lower platform, 3-support rod, 4-injection liquid tank, 5-upper mold device, 51-cylinder, 52-shock rod, 521-first fixing plate, 522-reduction Vibration rod, 523-spring, 524-telescopic sleeve, 525-second fixing plate, 53-upper die, 54-injection port, 55-positioning rod, 56-extension tube, 57-liquid outlet, 6-lower mold Device, 61-slide module, 62-lower die, 63-slide rail, 64-positioning hole, 65-injection groove, 66-cavity, 67-slider, 7-cooling device, 71-ring pipe, 72- Micro water pump, 73-water pipe, 74-cooling water tank.

Detailed ways

The present utility model will now be described in further detail in conjunction with the accompanying drawings. These drawings are all simplified schematic diagrams, and only illustrate the basic structure of the present invention in a schematic manner, so they only show the structures related to the present invention.

Examples of such embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to be used to explain the present invention, but should not be construed as a limitation of the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axial" The orientation or positional relationship indicated by , "radial direction", "circumferential direction", etc. are based on the orientation or positional relationship shown in the accompanying drawings, which are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying the indicated device. Or the elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

In the present utility model, unless otherwise expressly specified and limited, the terms "installation", "connection", "connection", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integration; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between the two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

1-6, an injection mold, an upper platform 1, a lower platform 2, an injection liquid tank 4, an upper mold device 5, a lower mold device 6 and a cooling device 7;

A support rod 3 is connected between the lower platform 2 and the upper platform 1, an injection molding liquid tank 4 is installed on the top of the upper platform 1, an upper mold device 5 is arranged at the bottom of the upper platform 1, and a liquid outlet 57 is arranged at the bottom of the injection molding liquid tank 4. The liquid port 57 is communicated with the injection port 54 of the upper mold device 5 through a telescopic tube 56. The telescopic tube 56 is made of metal, and the outside is wrapped with a thermal insulation layer, which prevents the injection liquid from cooling and solidifying during the injection process. On the platform 2, a cooling device 7 is provided on the side of the lower mold device 6.

The upper die device 5 includes an upper die 53, a damping rod 52 and a cylinder 51. The cylinder 51 is installed on the bottom of the upper platform 1. The cylinder 51 and the top of the upper die 53 are connected by a damping rod 52. The bottom of the upper die 53 is provided with a damping rod 52. There are a plurality of positioning rods 55, and the damping rods 52 are arranged so that the cylinder 51 controls the upper die 53 and the lower die to close to produce a buffer effect, thereby prolonging the service life of the cylinder 51 and the connecting rod.

The lower die device 6 includes two lower die 62 and two sliding modules 61. The lower die 62 is installed in parallel on the lower platform 2. The inner side of the lower die 62 is provided with a concave slide rail 63. The lower die 62 A cavity 66 is opened inside, two sliding modules 61 are provided with sliding blocks 67 on both sides, and the sliding blocks 67 and the sliding rails 63 are installed in cooperation with each other. There is no gap between 62 or the gap is less than 0.1mm, so the injection liquid cannot enter. The top of the lower die 62 is provided with a positioning hole 64, and the positions of the positioning rod 55 and the positioning hole 64 are set correspondingly. The upper die 53, sliding The injection groove 65 formed by the mold 61 and the lower die 62 .

The cooling device 7 includes a cooling water tank 74 and a water pipe 73. The cooling water tank 74 is arranged on one side of the lower mold device 6. The cooling water tank 74 communicates with the cavities 66 in the two lower molds 62 through a plurality of water pipes 73 respectively. The lower mold device 6 is on the other side. An annular pipe 71 is provided on one side, the annular pipe 71 communicates with the two lower dies 62, and a micro water pump 72 is installed on the upper flange of the water pipe 73. The cold water has been kept in a circulating flow state to achieve uniform cooling of the injection liquid in the lower die, preventing uneven cooling resulting in incomplete curing.

The damping rod 52 includes a first fixing plate 521 and a second fixing plate 525. One side of the first fixing plate 521 is installed at the bottom of the cylinder 51, the other side of the first fixing plate 521 is installed with a telescopic rod 522, and the second fixing plate 525 is a A telescopic sleeve 524 is installed on the other side of the second fixing plate 525 , the telescopic rod 522 is movably sleeved in the telescopic sleeve 524 , and a spring 523 is arranged in the telescopic sleeve 524 .

Working principle: During production and processing, the air rod controls the upper die 53 to move downward, the positioning column of the upper die 53 is clamped in the positioning hole 64 of the lower die, and the injection liquid tank 4 pairs the upper die 53 and the lower die 62. The formed injection groove 65 is injected, and the water in the cooling water tank 74 circulates in the cavity of the lower die, so that the injection molded product in the injection groove 65 is rapidly cooled and formed. When the size of the injection molded product needs to be adjusted, the sliding module 61 is moved to change the size.

The structure of the utility model is simple, and the damping rod 52 is arranged so that the cylinder 51 controls the upper die 53 and the lower die to be closed to produce a buffer effect, thereby prolonging the service life of the cylinder 51 and the connecting rod. The cooperation keeps the cold water between the two lower dies 62 in a circulating flow state, so as to achieve uniform cooling of the injected liquid in the lower dies, to prevent uneven cooling resulting in incomplete curing, and to move when the size of the injection molded product needs to be adjusted. The sliding module 61 changes the size of the injection groove 65 formed by the upper die 53, the sliding die 61 and the lower die 62, so that one die can produce multiple types of products, which reduces the production cost.

The standard parts used in the utility model can be purchased from the market, the special-shaped parts can be customized according to the description in the specification and the drawings, and the specific connection method of each part adopts the mature bolts, rivets and welding in the prior art. and other conventional means, the machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here, and the content that is not described in detail in this specification. It belongs to the prior art known to those skilled in the art.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. Equivalent replacement or modification of the new technical solution and its utility model concept shall be included within the protection scope of the present utility model.

Claims (6)

1. An injection mold, its characterized in that: the injection molding machine comprises an upper platform, a lower platform, an injection molding liquid box, an upper die device, a lower die device and a cooling device;

the utility model discloses a mould plastics, including lower platform, upper platform, lower platform, upper platform top, upper platform bottom, the upper platform is connected with the bracing piece between lower platform and the upper platform, the liquid case of moulding plastics is installed at the upper platform top, the upper platform bottom is equipped with mould device, the liquid bottom of moulding plastics is equipped with the liquid outlet, the liquid outlet communicates through the mouth of moulding plastics of flexible pipe with last mould device, lower mould device sets up on the platform down, lower.

2. An injection mold according to claim 1, characterized in that: the upper die device comprises an upper die, a damping rod and an air cylinder, the air cylinder is installed at the bottom of the upper platform, the air cylinder is connected with the top of the upper die through the damping rod, and a plurality of positioning rods are arranged at the bottom of the upper die.

3. An injection mold according to claim 1, characterized in that: the lower die device comprises two lower pressing dies and two sliding modules, the two lower pressing dies are arranged on the lower platform in parallel, the inner sides of the lower pressing dies are provided with concave sliding rails, cavities are formed in the lower pressing dies, two sliding modules are arranged on two sides of each sliding module, the sliding blocks are matched with the sliding rails, the sliding modules are movably arranged between the lower pressing dies, and positioning holes are formed in the tops of the lower pressing dies.

4. An injection mold according to claim 3, characterized in that: the cooling device comprises a refrigeration water tank and a water pipe, the refrigeration water tank is arranged on one side of the lower die device, the refrigeration water tank is provided with a plurality of water pipes which are communicated with cavities in the lower pressing die respectively, the other side of the lower die device is provided with an annular pipe, and the annular pipe is communicated with the lower pressing die.

5. An injection mold according to claim 4, wherein: and a micro water pump is arranged on the water pipe through a flange.

6. An injection mold according to claim 2, characterized in that: the damping rod comprises a first fixing plate and a second fixing plate, one side of the first fixing plate is installed at the bottom of the air cylinder, the telescopic rod is installed on the other side of the first fixing plate, one side of the second fixing plate is installed at the top of the upper pressing die, the telescopic sleeve is installed on the other side of the second fixing plate, the telescopic rod is movably sleeved in the telescopic sleeve, and a spring is arranged in the telescopic sleeve.

Images