Mold with local pressure for detecting injection molding quality

Abstract

The utility model discloses a mold with local pressure for detecting injection molding quality, which comprises a fixed mold, a movable mold is arranged above the fixed mold, a controller is fixedly mounted on the front surface of the fixed mold, a voice broadcaster is fixedly connected to the front surface of the fixed mold, a cavity is arranged on the upper surface of the fixed mold, and the movable mold is arranged in the cavity. Two lower detection cavities are formed in the fixed mold, first pressure sensors are fixedly mounted on the inner side walls of the two lower detection cavities, the ends, close to each other, of the two first pressure sensors penetrate through the fixed mold and extend into the mold cavity, and an injection molding hole is formed in the upper surface of the movable mold; and a sub-runner is formed in the movable mold, and the bottom end of the injection molding hole communicates with the top end of the sub-runner. The device is provided with a local pressure detection structure, the injection molding process can be adjusted in real time, it is ensured that the interior of a mold cavity is evenly and stably filled with plastic melt, and the quality of injection molding products is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold field especially a mold with partial pressure detection injection molding quality. BACKGROUND

[0002] Injection mold is a tool for producing plastic products, and is also a tool for giving plastic products complete structure and accurate size. Injection molding is a processing method used in batch production of some complex-shaped parts. Specifically, after heated and melted plastic is injected into a mold cavity by an injection molding machine at high pressure, the product is obtained after cooling and solidification.

[0003] Injection molding is a manufacturing process widely used in the plastic processing industry. The quality of its products depends largely on the injection process parameters in the mold, among which pressure distribution is one of the most critical factors. However, the traditional injection mold lacks a structure for accurately monitoring the local pressure inside the mold cavity, which can lead to quality defects such as short shots, unstable dimensions, and internal stress concentration in the products, thereby affecting the quality of injection molded products. To solve the above problems, we propose a mold with partial pressure detection injection molding quality. SUMMARY

[0004] The utility model discloses a mold with partial pressure detection injection molding quality, which solves the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A mold with partial pressure detection injection molding quality, comprising a fixed mold, a movable mold above the fixed mold, a controller fixedly installed on the front surface of the fixed mold, a voice broadcaster fixedly connected to the front surface of the fixed mold, a cavity opened on the upper surface of the fixed mold, two lower detection cavities opened in the fixed mold, a first pressure sensor fixedly installed on the inner side wall of each lower detection cavity, and a movable mold with an injection hole opened on the upper surface, a shunt channel opened in the movable mold, the bottom end of the injection hole in communication with the top end of the shunt channel, two upper detection cavities above the movable mold, a second pressure sensor fixedly installed on the inner side wall of each upper detection cavity, and the distal end of each second pressure sensor penetrating the movable mold and extending into the shunt channel.

[0007] In further embodiments, the upper surface of the fixed mold is fixedly connected to two groups of positioning rods, and the upper surface of the movable mold is provided with two groups of positioning holes. The outer surfaces of the two groups of positioning rods are respectively in sliding connection with the inner walls of the two groups of positioning holes.

[0008] In further embodiments, the bottom surface of the movable mold is provided with two buffer grooves, and the inner top walls of the two buffer grooves are fixedly connected with buffer pads.

[0009] In further embodiments, the upper surface of the fixed mold is fixedly connected with two buffer blocks, the top ends of the two buffer blocks respectively extend to the interiors of the two buffer grooves, and the outer surfaces of the buffer blocks are in contact with the inner walls of the buffer grooves.

[0010] In further embodiments, the interior of the fixed mold is provided with a cooling detection cavity, the interior of the cooling detection cavity is provided with two communication pipes, the distal ends of the two communication pipes away from each other are respectively penetrated through the fixed mold and extend to the exterior of the fixed mold, and the distal ends of the two communication pipes away from each other are fixedly connected with connection heads.

[0011] In further embodiments, the upper portion of the movable mold is provided with an injection disc, and the bottom end of the injection disc is fixedly communicated with the top end of the injection hole.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The first pressure sensor and the second pressure sensor are arranged at the end of the melt injection and the position where the wall thickness changes greatly, the pressure change of the local position in the mold can be measured in real time, the signal transmitted by the pressure sensor can be collected and processed and analyzed in cooperation with the controller, the voice broadcaster can be used for voice prompting to prompt the possible quality problems of the operator, such as the flash or mold damage caused by the excessively high pressure and the short shot phenomenon caused by the excessively low pressure, the injection process can be adjusted in real time to ensure that the plastic melt is uniformly and stably filled in the mold cavity, and then the mold has the structure of local pressure detection, and the quality of the injection product is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a perspective structural schematic view of the front view of the mold for injection molding quality with local pressure detection.

[0015] Figure 2 It is a sectional view of the front view of the mold for injection molding quality with local pressure detection.

[0016] Figure 3 It is a sectional view of the side view of the mold for injection molding quality with local pressure detection.

[0017] Figure 4 It is a sectional view of the top view of the movable mold of the mold for injection molding quality with local pressure detection.

[0018] In the figure: 1, the fixed mold; 2, the movable mold; 3, the controller; 4, the voice broadcaster; 5, the cavity; 6, the cooling detection cavity; 7, the lower detection cavity; 8, the first pressure sensor; 9, the upper detection cavity; 10, the second pressure sensor; 11, the runner; 12, the injection hole; 13, the injection disc; 14, the positioning hole; 15, the positioning rod; 16, the buffer groove; 17, the buffer block; 18, the communication pipe; 19, the connector; 20, the buffer pad. DETAILED DESCRIPTION

[0019] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only for the purpose of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0020] The technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] Embodiment one:

[0022] Please refer to Figures 1-4The utility model discloses a mould with partial pressure detection injection moulding quality, including fixed mould 1, the upper of fixed mould 1 is equipped with movable mould 2, the front surface fixed mounting of fixed mould 1 has controller 3, the front surface fixed connection of fixed mould 1 has voice broadcast ware 4, the upper surface of fixed mould 1 is set with mould cavity 5, the inside of fixed mould 1 is set with two lower detection cavities 7, the inner side wall of two lower detection cavities 7 all are fixed mounting first pressure sensor 8, and the end of mutual close of two first pressure sensor 8 all are in fixed mould 1 and extend to the inside of mould cavity 5, the upper surface of movable mould 2 is set with injection hole 12, and the inside of movable mould 2 is set with shunt 11, and the bottom of injection hole 12 is linked with the top of shunt 11, and the upper of movable mould 2 is equipped with two upper detection cavities 9, and the inner side wall of two upper detection cavities 9 all are fixed mounting second pressure sensor 10, and the end of mutual away of two second pressure sensor 10 all are in movable mould 2 and extend to the inside of shunt 11.

[0023] Specifically, through the setting of the first pressure sensor 8 and the second pressure sensor 10, the pressure change of the local position in the mold can be measured in real time at the end of the melt injection and the position where the wall thickness changes greatly, and the signals transmitted by the pressure sensors can be collected and processed and analyzed in cooperation with the controller 3.

[0024] Embodiment two:

[0025] As an improvement to the last embodiment.

[0026] Specifically, the upper surface of the fixed mold 1 is fixedly connected with two groups of positioning rods 15, the upper surface of the movable mold 2 is provided with two groups of positioning holes 14, the outer surfaces of the two groups of positioning rods 15 are respectively slidably connected with the inner walls of the two groups of positioning holes 14, the bottom surface of the movable mold 2 is provided with two buffer grooves 16, the inner top walls of the two buffer grooves 16 are fixedly connected with buffer pads 20, the upper surface of the fixed mold 1 is fixedly connected with two buffer blocks 17, the top ends of the two buffer blocks 17 respectively extend into the interiors of the two buffer grooves 16, and the outer surface of the buffer block 17 is in contact with the inner wall of the buffer groove 16, through the cooperation of the positioning rod 15 and the positioning hole 14, the movable mold 2 can slide more stably, and the phenomenon of shaking of the movable mold 2 during opening and closing movement is avoided, and through the cooperation of the buffer block 17, the buffer groove 16 and the buffer pad 20, the movable mold 2 can be buffered when closing, and the collision can be reduced to a certain extent.

[0027] Specifically, the inside of the fixed mold 1 is provided with a cooling detection cavity 6, the inside of the cooling detection cavity 6 is provided with two communication pipes 18, the ends of the two communication pipes 18 away from each other are all penetrated through the fixed mold 1 and extended to the outside of the fixed mold 1, the ends of the two communication pipes 18 away from each other are all fixedly communicated with a connector 19, the upper side of the movable mold 2 is provided with an injection disc 13, the bottom end of the injection disc 13 is fixedly communicated with the top end of the injection hole 12, through the cooling detection cavity 6, the communication pipe 18 and the connector 19, through the circulation of the cooling water in the inside of the cooling detection cavity 6, the heat absorbed by the mold in the injection process can be taken away, so that the mold temperature is controlled, and it is ensured that the plastic is solidified and formed in a suitable temperature range.

[0028] The working principle of the utility model is: first, the first pressure sensor 8 and the second pressure sensor 10 are installed and fixed, then the plastic melt is pushed by the screw of the injection molding machine, enters the inside of the cavity 5 through the injection hole 12 and the runner 11 of the movable mold 2, with the filling of the melt, the pressure in the cavity 5 gradually increases, the first pressure sensor 8 and the second pressure sensor 10 distributed at all places monitor the change of local pressure in real time, and the signals transmitted from the pressure sensor are collected by the controller 3, and are processed and analyzed, the injection process can be adjusted in real time, and it is ensured that the plastic melt is uniformly and stably filled and pressure maintained in the inside of the mold cavity 5.

[0029] For those skilled in the art, it is obvious that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0030] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A mold with local pressure detection of injection molding quality, characterized by: The utility model provides a moulding machine, including fixed mould, the top of fixed mould is equipped with movable mould, the front surface of fixed mould is fixedly installed with controller, the front surface of fixed mould is fixedly connected with voice broadcast ware, the upper surface of fixed mould is equipped with cavity, the inside of fixed mould is equipped with two lower detection cavities, the inner side wall of two lower detection cavities all are fixedly installed with first pressure sensor, and the end of two first pressure sensors mutually close all penetrates fixed mould and extends to the inside of cavity, the upper surface of movable mould is equipped with injection hole, the inside of movable mould is equipped with shunt, and the bottom of injection hole and the top of shunt are communicated, the top of movable mould is equipped with two upper detection cavities, and the inner side wall of two upper detection cavities all are fixedly installed with second pressure sensor, and the end of two second pressure sensors mutually far away all penetrates movable mould and extends to the inside of shunt.

2. A mold with local pressure detection of injection molding quality according to claim 1, characterized in that: The upper surface of the fixed mold is fixedly connected with two groups of positioning rods, and the upper surface of the movable mold is provided with two groups of positioning holes.

3. A mold for injection molding with local pressure detection of molding quality according to claim 1, characterized in that: The bottom surface of the movable mold is provided with two buffer grooves, and the inner top wall of each buffer groove is fixedly connected with a buffer pad.

4. The mold for injection molding quality with local pressure detection according to claim 1, characterized in that: The upper surface of the fixed mold is fixedly connected with two buffer blocks, and the top end of each buffer block extends into the inside of the two buffer grooves, and the outer surface of the buffer block is in contact with the inner wall of the buffer groove.

5. The mold for injection molding quality with local pressure detection according to claim 1, characterized in that: The inside of the fixed mold is provided with a cooling detection cavity, the inside of the cooling detection cavity is provided with two communication pipes, the end of each communication pipe away from each other penetrates the fixed mold and extends to the outside of the fixed mold, and the end of each communication pipe away from each other is fixedly connected with a connector.

6. The mold for injection molding quality with local pressure detection according to claim 1, characterized in that: The top of the movable mold is provided with an injection disc, and the bottom end of the injection disc is fixedly communicated with the top end of the injection hole.

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