Mould electric heating system suitable for injection molding machine

Abstract

The utility model relates to a mold electric heating system suitable for an injection molding machine. The mold electric heating system comprises a heat exchange system and a mold cavity plate, the heat exchange system comprises an electric heating box, a gas storage tank and a cooling liquid storage tank; the mold cavity plate comprises a first heating frame, a mold core and a second heating frame, and the mold core is located in a mold heating cavity formed by the first heating frame and the second heating frame. According to the utility model, through the structural arrangement that the heat exchange system is matched with the mold cavity plate, the mold core in the mold cavity can be quickly heated and cooled, and the heating and cooling efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the technical field related to injection molds, and in particular to a mold electric heating system suitable for an injection molding machine. Background Art

[0002] Injection molding is one of the most widely used plastic molding methods. In the injection molding process, the molten plastic will be injected into the mold cavity to give it a certain shape, and then cooled and shaped in the mold cavity. Since the molding and cooling of the plastic melt are all completed in the mold cavity, the mold cavity temperature control has a very important influence on the quality and molding cycle of the final injection molded product. The mold temperature is also one of the most important parameters in the injection molding process.

[0003] After massive search, it was found that the prior art publication number is CN211363357U, which discloses a rapid heating and cooling system for injection molds, including a fixed mold base plate, a guide column is arranged at the upper end of the fixed mold base plate, a fixed mold core is arranged on the inner side of the upper end of the fixed mold base plate near the guide column, a movable mold plate is arranged on the outer side of the guide column, and two sets of connecting mechanisms are arranged at one end of the fixed mold core, a cooling water outlet pipe is arranged at one end of the connecting mechanism, a circulating water pump is arranged at one end of the cooling water outlet pipe, a water storage tank is arranged on the outer side of the circulating water pump, a fixed groove is arranged inside the movable mold plate, a spiral resistance wire is arranged on the inner side of the fixed groove, and a fixed plate is arranged at the upper end of the fixed groove. The rapid heating and cooling system for injection molds described in the utility model has good sealing between the cooling water outlet pipe and the fixed mold core, is not easy to leak, has good heating effect, and is convenient for replacing the spiral resistance wire inside the fixed groove.

[0004] In summary, existing mold heating and cooling systems are usually completed by means of liquid media, with slow heating and cooling rates and low heating and cooling efficiency.

[0005] In view of the above-mentioned defects, the designer actively carried out research and innovation in order to create an electric heating system for molds suitable for injection molding machines, making it more valuable for industrial use. Utility Model Content

[0006] In order to solve any of the above technical problems, the purpose of the utility model is to provide a mold electric heating system suitable for an injection molding machine.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A mold electric heating system suitable for an injection molding machine comprises a heat exchange system and a mold cavity plate;

[0009] The heat exchange system includes an electric heating box, a gas storage tank and a coolant storage tank;

[0010] The mold cavity plate comprises a first heating frame, a mold core and a second heating frame, and the mold core is located in the mold heating cavity composed of the first heating frame and the second heating frame;

[0011] A heating plate is arranged on a first side of the first heating frame or the second heating frame, and an electric heating connecting line guide groove distributed along the serpentine structure is arranged in the heating plate; a cooling plate is arranged on a second side of the first heating frame or the second heating frame, and a cooling flow channel distributed along the serpentine structure is arranged in the cooling plate;

[0012] Several electric heating connecting lines of the electric heating box are distributed in the electric heating connecting line guide groove. The output end of the gas storage tank is connected to the input main pipeline of the mold cavity plate through the gas delivery pipeline. The output end of the coolant storage tank is connected to the input main pipeline of the mold cavity plate through the coolant delivery pipeline. The input main pipeline is connected to the cooling channel.

[0013] As a further improvement of the utility model, the input end of the gas storage tank is connected to the output main pipeline of the mold cavity plate through a gas return pipeline, and the output main pipeline is connected to the cooling flow channel.

[0014] As a further improvement of the utility model, the input end of the coolant storage tank is connected to the output main pipeline of the mold cavity plate through a coolant return pipeline, and the output main pipeline is connected to the cooling flow channel.

[0015] As a further improvement of the utility model, the mold heating cavity includes a first heating cavity and a second heating cavity. The first heating cavity is arranged between the heating plate and the cooling plate of the first heating frame, and the second heating cavity is arranged between the heating plate and the cooling plate of the second heating frame. Both sides of the mold core are respectively located in the first heating cavity and the second heating cavity.

[0016] As a further improvement of the utility model, positioning columns are provided on both sides of the bottom of the first heating frame, guide blocks are provided on both sides of the mold core, and positioning holes are provided on both sides of the top of the second heating frame. The positioning columns pass through the guide holes on the guide blocks and are connected to the positioning holes.

[0017] By means of the above solution, the utility model has at least the following advantages:

[0018] The utility model can quickly heat and cool the mold core in the mold cavity through the structural setting of the matching heat exchange system and the mold cavity plate, and the heating and cooling efficiency is high;

[0019] The two sides of the mold core of the utility model are respectively located in the first heating inner cavity and the second heating inner cavity, so that the heating of the mold core is more uniform.

[0020] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is a structural schematic diagram of a mold electric heating system suitable for an injection molding machine of the utility model;

[0023] Figure 2 yes Figure 1 Schematic diagram of the structure of the middle mold cavity plate;

[0024] Figure 3 yes Figure 2 Schematic diagram of the split structure;

[0025] Figure 4 yes Figure 2 A schematic diagram of the structure of the heating plate in the first heating frame or the second heating frame;

[0026] Figure 5 yes Figure 2 Schematic diagram of the structure of the cooling plate in the first heating frame or the second heating frame.

[0027] The meanings of the various reference numerals in the figures are as follows.

[0028] Electric heating box 1, electric heating connecting line 2, mold cavity plate 3, gas storage tank 4, coolant storage tank 5, gas delivery pipeline 6, input main pipeline 7, coolant delivery pipeline 8, output main pipeline 9, coolant return pipeline 10, gas return pipeline 11, first heating frame 12, mold core 13, second heating frame 14, first heating cavity 15, positioning column 16, guide block 17, guide hole 18, second heating cavity 19, positioning hole 20, heating plate 21, electric heating connecting line guide groove 22, cooling plate 23, cooling channel 24. DETAILED DESCRIPTION

[0029] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0030] In order to make the technical personnel in the technical field better understand the scheme of the utility model, the technical scheme in the embodiment of the utility model will be clearly and completely described below in combination with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, rather than all the embodiments. The components of the embodiment of the utility model usually described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model for protection, but only represents the selected embodiment of the utility model. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the utility model.

[0031] Example

[0032] like Figure 1 to Figure 5 As shown,

[0033] A mold electric heating system suitable for an injection molding machine comprises a heat exchange system and a mold cavity plate 3.

[0034] 1. The heat exchange system includes an electric heating box 1, a gas storage tank 4 and a coolant storage tank 5.

[0035] 1. Several electric heating connecting lines 2 of the electric heating box 1 are distributed in the electric heating connecting line guide groove 22. The output end of the gas storage tank 4 is connected to the input main pipeline 7 of the mold cavity plate 3 through the gas delivery pipeline 6. The output end of the coolant storage tank 5 is connected to the input main pipeline 7 of the mold cavity plate 3 through the coolant delivery pipeline 8. The input main pipeline 7 is connected to the cooling channel 24.

[0036] 2. The input end of the gas storage tank 4 is connected to the output main pipeline 9 of the mold cavity plate 3 through the gas reflux pipeline 11, and the output main pipeline 9 is connected to the cooling flow channel 24.

[0037] 3. The input end of the coolant storage tank 5 is connected to the output main pipeline 9 of the mold cavity plate 3 through the coolant return pipeline 10, and the output main pipeline 9 is connected to the cooling channel 24.

[0038] 2. The mold cavity plate 3 includes a first heating frame 12 , a mold core 13 and a second heating frame 14 . The mold core 13 is located in the mold heating cavity formed by the first heating frame 12 and the second heating frame 14 .

[0039] 1. A heating plate 21 is arranged on the first side of the first heating frame 12 or the second heating frame 14, and an electric heating connecting line guide groove 22 distributed along the serpentine structure is arranged in the heating plate 21. A cooling plate 23 is arranged on the second side of the first heating frame 12 or the second heating frame 14, and a cooling flow channel 24 distributed along the serpentine structure is arranged in the cooling plate 23.

[0040] 2. The mold heating cavity includes a first heating cavity 15 and a second heating cavity 19. The first heating cavity 15 is arranged between the heating plate 21 and the cooling plate 23 of the first heating frame 12, and the second heating cavity 19 is arranged between the heating plate 21 and the cooling plate 23 of the second heating frame 14. Both sides of the mold core 13 are respectively located in the first heating cavity 15 and the second heating cavity 19.

[0041] 3. Positioning columns 16 are provided on both sides of the bottom of the first heating frame 12, guide blocks 17 are provided on both sides of the mold core 13, and positioning holes 20 are provided on both sides of the top of the second heating frame 14. The positioning columns 16 pass through the guide holes 18 on the guide blocks 17 and are connected to the positioning holes 20.

[0042] The working principle of this utility model is briefly described as follows:

[0043] Heating process: The first heating frame 12 and the second heating frame 14 in the mold cavity plate 3 are connected through a heating system composed of an electric heating box 1 and an electric heating connecting line 2. The heating plates 21 in the first heating frame 12 and the second heating frame 14 perform electrical heating treatment on the internal mold core 13.

[0044] Cooling process: The cooling plate 23 in the first heating frame 12 and the second heating frame 14 is connected through the cooling liquid storage tank 5, the cooling liquid delivery pipeline 8 and the input main pipeline 7, thereby cooling the mold core 13. After the above cooling process, the cooled liquid medium can be returned to the cooling liquid storage tank 5 through the structure connected by the gas storage tank 4, the gas delivery pipeline 6 and the input main pipeline 7.

[0045] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implying the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0046] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. A mold electric heating system suitable for an injection molding machine, comprising a heat exchange system and a mold cavity plate (3); Features: The heat exchange system comprises an electric heating box (1), a gas storage tank (4) and a coolant storage tank (5); The mold cavity plate (3) comprises a first heating frame (12), a mold core (13) and a second heating frame (14); the mold core (13) is located in the mold heating cavity formed by the first heating frame (12) and the second heating frame (14); A heating plate (21) is arranged on a first side of the first heating frame (12) or the second heating frame (14), and an electric heating connection line guide groove (22) distributed along the serpentine structure is arranged in the heating plate (21); a cooling plate (23) is arranged on a second side of the first heating frame (12) or the second heating frame (14), and a cooling flow channel (24) distributed along the serpentine structure is arranged in the cooling plate (23); The plurality of electric heating connecting lines (2) of the electric heating box (1) are distributed in the electric heating connecting line guide groove (22); the output end of the gas storage tank (4) is connected to the input main pipeline (7) of the mold cavity plate (3) through the gas delivery pipeline (6); the output end of the coolant storage tank (5) is connected to the input main pipeline (7) of the mold cavity plate (3) through the coolant delivery pipeline (8); and the input main pipeline (7) is connected to the cooling channel (24).

2. A mold electric heating system suitable for an injection molding machine as claimed in claim 1, characterized in that: The input end of the gas storage tank (4) is connected to the output main pipeline (9) of the mold cavity plate (3) through a gas return pipeline (11), and the output main pipeline (9) is connected to the cooling flow channel (24).

3. A mold electric heating system suitable for an injection molding machine as claimed in claim 1, characterized in that: The input end of the cooling liquid storage tank (5) is connected to the output main pipeline (9) of the mold cavity plate (3) through a cooling liquid return pipeline (10), and the output main pipeline (9) is connected to the cooling flow channel (24).

4. A mold electric heating system suitable for an injection molding machine as claimed in claim 1, characterized in that: The mold heating cavity comprises a first heating inner cavity (15) and a second heating inner cavity (19); the first heating inner cavity (15) is arranged between the heating plate (21) and the cooling plate (23) of the first heating frame (12); the second heating inner cavity (19) is arranged between the heating plate (21) and the cooling plate (23) of the second heating frame (14); and two sides of the mold core (13) are respectively located in the first heating inner cavity (15) and the second heating inner cavity (19).

5. The electric mold heating system for an injection molding machine according to claim 1, characterized in that: Positioning columns (16) are provided on both sides of the bottom of the first heating frame (12), guiding blocks (17) are provided on both sides of the mold core (13), and positioning holes (20) are provided on both sides of the top of the second heating frame (14), and the positioning columns (16) pass through the guide holes (18) on the guiding blocks (17) and are connected to the positioning holes (20).

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