Automobile part injection mold heating circulation system and method

Abstract

The invention relates to an automobile part injection mold heating circulation system and method. The automobile part injection mold heating circulation system comprises a heat exchange system and a mold cavity plate. The heat exchange system comprises an electric heating box, a heat conduction oil storage tank, 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. 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 rapidly heated and cooled, and the heating and cooling efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field related to injection mold processing, and in particular to a heating circulation system and method for an injection mold of an automobile component. 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 designers actively carried out research and innovation in order to create a heating circulation system and method for automobile parts injection molds to make them more valuable for industrial use. Summary of the invention

[0006] In order to solve any of the above technical problems, the purpose of the present invention is to provide a heating circulation system and method for an automobile component injection mold.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] One of the purposes of the present invention:

[0009] A heating circulation system for an automobile parts injection mold comprises a heat exchange system and a mold cavity plate;

[0010] The heat exchange system includes an electric heating box, a thermal oil storage tank, a gas storage tank and a coolant storage tank;

[0011] 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;

[0012] An electric 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 electric heating plate; a temperature conducting plate is arranged on a second side of the first heating frame or the second heating frame, and a temperature conducting flow channel distributed along the serpentine structure is arranged in the temperature conducting plate;

[0013] 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 heat transfer oil storage tank is connected to the input main pipeline of the mold cavity plate through the heat transfer oil delivery pipeline, 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, and the input main pipeline is connected to the temperature conduction flow channel.

[0014] As a further improvement of the present invention, the input end of the heat transfer oil storage tank is connected to the output main pipeline of the mold cavity plate through a heat transfer oil return pipeline, and the output main pipeline is connected to the temperature transfer flow channel.

[0015] As a further improvement of the present invention, the input end of the gas storage tank is connected to the output main pipeline of the mold cavity plate through a gas reflux pipeline, and the output main pipeline is connected to the temperature conduction flow channel.

[0016] As a further improvement of the present invention, 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 temperature conduction channel.

[0017] As a further improvement of the present invention, the mold heating cavity includes a first heating cavity and a second heating cavity. The first heating cavity is arranged between the electric heating plate and the heat conduction plate of the first heating frame, and the second heating cavity is arranged between the electric heating plate and the heat conduction 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.

[0018] As a further improvement of the present invention, 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.

[0019] As a further improvement of the present invention, pumps are installed on the heat transfer oil delivery pipeline, the gas delivery pipeline and the coolant delivery pipeline.

[0020] As a further improvement of the present invention, valves are installed on the heat transfer oil delivery pipeline, the input main pipeline, the gas delivery pipeline, the coolant delivery pipeline, the output main pipeline, the heat transfer oil return pipeline, the gas return pipeline and the coolant return pipeline.

[0021] The second purpose of the present invention is:

[0022] A heating cycle method for an automobile component injection mold comprises the following steps in sequence:

[0023] Step S1, mold heating pre-treatment step:

[0024] Open the valves on the gas delivery pipeline, input main pipeline, output main pipeline and gas return pipeline, so that the high-pressure gas in the gas storage tank enters the temperature conduction flow channel, and perform preliminary cleaning of the temperature conduction flow channel;

[0025] Step S2: Mold heating step:

[0026] Step S21, opening the valves on the heat transfer oil delivery pipeline, the input main pipeline, the output main pipeline and the heat transfer oil return pipeline, so that the heat transfer oil in the heat transfer oil storage tank enters the temperature transfer flow channel;

[0027] Step S22, the electric heating box is powered on and auxiliary electric heating treatment is performed on the mold core located in the first heating inner cavity and the second heating inner cavity via the electric heating connecting line;

[0028] Step S3, mold cooling pre-treatment step:

[0029] Open the valves on the gas delivery pipeline, the input main pipeline, the output main pipeline and the heat transfer oil return pipeline, so that the high-pressure gas in the gas storage tank enters the temperature transfer flow channel and the heat transfer oil in the temperature transfer flow channel returns to the heat transfer oil storage tank;

[0030] Step S4: mold cooling step:

[0031] Open the valves on the coolant delivery pipeline, the input main pipeline, the output main pipeline and the coolant return pipeline, so that the coolant in the coolant storage tank enters the temperature conduction channel;

[0032] Step S5, steps after mold heat exchange:

[0033] Open the valves on the gas delivery pipeline, the input main pipeline, the output main pipeline and the coolant return pipeline, and the high-pressure gas in the gas storage tank enters the temperature conduction flow channel, and the coolant in the temperature conduction flow channel returns to the coolant storage tank.

[0034] By means of the above scheme, the present invention has at least the following advantages:

[0035] The present invention can quickly heat and cool the mold core in the mold cavity through the structural setting of the heat exchange system and the mold cavity plate, and the heating and cooling efficiency is high;

[0036] The heating method of the present invention includes a combination of heat-conducting oil and electric heating to ensure the heating temperature of the mold core;

[0037] The two sides of the mold core of the present invention 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;

[0038] The present invention cleans the temperature conduction channel by high-pressure gas before and after heating or cooling, thereby avoiding adverse effects of residual substances on heating or cooling.

[0039] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0041] Figure 1 It is a structural schematic diagram of a heating circulation system for an automobile component injection mold of the present invention;

[0042] Figure 2 yes Figure 1 Schematic diagram of the structure of the middle mold cavity plate;

[0043] Figure 3 yes Figure 2 Schematic diagram of the split structure;

[0044] Figure 4 yes Figure 2 A schematic diagram of the structure of the electric heating plate in the first heating frame or the second heating frame;

[0045] Figure 5 yes Figure 2 A schematic diagram of the structure of the heat conducting plate in the first heating frame or the second heating frame;

[0046] Figure 6 The present invention is a schematic diagram of a heating cycle method for an automobile component injection mold.

[0047] The meanings of the various reference numerals in the figures are as follows.

[0048] Electric heating box 1, electric heating connecting line 2, mold cavity plate 3, thermal oil storage tank 4, gas storage tank 5, coolant storage tank 6, thermal oil delivery pipeline 7, input main pipeline 8, gas delivery pipeline 9, coolant delivery pipeline 10, output main pipeline 11, thermal oil return pipeline 12, gas return pipeline 13, coolant return pipeline 14, first heating frame 15, mold core 16, second heating frame 17, first heating cavity 18, positioning column 19, guide block 20, guide hole 21, second heating cavity 22, positioning hole 23, electric heating plate 24, electric heating connecting line guide groove 25, temperature conduction plate 26, temperature conduction channel 27. DETAILED DESCRIPTION

[0049] The specific implementation of the present invention is further described in detail below 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.

[0050] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, rather than all the embodiments. The components of the embodiment of the present invention generally 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 present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiment of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present invention.

[0051] Example

[0052] like Figure 1 to Figure 6 As shown,

[0053] like Figure 1 to Figure 5 , one of the purposes of the present invention:

[0054] A heating circulation system for an automobile component injection mold comprises a heat exchange system and a mold cavity plate 3;

[0055] 1. The heat exchange system includes an electric heating box 1, a thermal oil storage tank 4, a gas storage tank 5 and a coolant storage tank 6.

[0056] 1. Several electric heating connecting lines 2 of the electric heating box 1 are distributed in the electric heating connecting line guide groove 25. The output end of the heat transfer oil storage tank 4 is connected to the input main pipeline 8 of the mold cavity plate 3 through the heat transfer oil delivery pipeline 7. The output end of the gas storage tank 5 is connected to the input main pipeline 8 of the mold cavity plate 3 through the gas delivery pipeline 9. The output end of the coolant storage tank 6 is connected to the input main pipeline 8 of the mold cavity plate 3 through the coolant delivery pipeline 10. The input main pipeline 8 is connected to the temperature conduction flow channel 27.

[0057] 2. The input end of the heat transfer oil storage tank 4 is connected to the output main pipeline 11 of the mold cavity plate 3 through the heat transfer oil return pipeline 12, and the output main pipeline 11 is connected to the temperature transfer flow channel 27.

[0058] 3. The input end of the gas storage tank 5 is connected to the output main pipeline 11 of the mold cavity plate 3 through the gas reflux pipeline 13, and the output main pipeline 11 is connected to the temperature conduction channel 27.

[0059] 4. The input end of the coolant storage tank 6 is connected to the output main pipeline 11 of the mold cavity plate 3 through the coolant return pipeline 14, and the output main pipeline 11 is connected to the temperature conduction channel 27.

[0060] also,

[0061] Pumps are installed on the heat transfer oil delivery pipeline 7 , the gas delivery pipeline 9 and the coolant delivery pipeline 10 .

[0062] Valves are installed on the heat transfer oil delivery pipeline 7, the input main pipeline 8, the gas delivery pipeline 9, the coolant delivery pipeline 10, the output main pipeline 11, the heat transfer oil return pipeline 12, the gas return pipeline 13 and the coolant return pipeline 14.

[0063] 2. The mold cavity plate 3 includes a first heating frame 15 , a mold core 16 and a second heating frame 17 . The mold core 16 is located in the mold heating cavity formed by the first heating frame 15 and the second heating frame 17 .

[0064] 1. An electric heating plate 24 is provided on the first side of the first heating frame 15 or the second heating frame 17, and an electric heating connecting line guide groove 25 distributed along the serpentine structure is provided in the electric heating plate 24; a temperature conducting plate 26 is provided on the second side of the first heating frame 15 or the second heating frame 17, and a temperature conducting flow channel 27 distributed along the serpentine structure is provided in the temperature conducting plate 26;

[0065] 2. The mold heating cavity includes a first heating cavity 18 and a second heating cavity 22. The first heating cavity 18 is arranged between the electric heating plate 24 and the heat conduction plate 26 of the first heating frame 15, and the second heating cavity 22 is arranged between the electric heating plate 24 and the heat conduction plate 26 of the second heating frame 17. Both sides of the mold core 16 are respectively located in the first heating cavity 18 and the second heating cavity 22.

[0066] 3. Positioning columns 19 are provided on both sides of the bottom of the first heating frame 15, guide blocks 20 are provided on both sides of the mold core 16, and positioning holes 23 are provided on both sides of the top of the second heating frame 17. The positioning columns 19 pass through the guide holes 21 on the guide blocks 20 and are connected to the positioning holes 23.

[0067] like Figure 6 , the second purpose of the present invention:

[0068] A heating cycle method for an automobile component injection mold comprises the following steps in sequence:

[0069] Step S1, mold heating pre-treatment step:

[0070] Open the valves on the gas delivery pipeline 9, the input main pipeline 8, the output main pipeline 11 and the gas return pipeline 13, so that the high-pressure gas in the gas storage tank 5 enters the temperature conduction flow channel 27, and the temperature conduction flow channel 27 is pre-cleaned;

[0071] Step S2: Mold heating step:

[0072] Step S21, opening the valves on the heat transfer oil delivery pipeline 7, the input main pipeline 8, the output main pipeline 11 and the heat transfer oil return pipeline 12, so that the heat transfer oil in the heat transfer oil storage tank 4 enters the temperature transfer flow channel 27;

[0073] Step S22, the electric heating box 1 is powered on and the mold core 16 located in the first heating inner cavity 18 and the second heating inner cavity 22 is subjected to auxiliary electric heating treatment via the electric heating connecting line 2;

[0074] Step S3, mold cooling pre-treatment step:

[0075] Open the valves on the gas delivery pipeline 9, the input main pipeline 8, the output main pipeline 11 and the heat transfer oil return pipeline 12, so that the high-pressure gas in the gas storage tank 5 enters the temperature transfer channel 27, and the heat transfer oil in the temperature transfer channel 27 returns to the heat transfer oil storage tank 4;

[0076] Step S4: mold cooling step:

[0077] Open the valves on the coolant delivery pipeline 10, the input main pipeline 8, the output main pipeline 11 and the coolant return pipeline 14, and the coolant in the coolant storage tank 6 enters the temperature conduction channel 27;

[0078] Step S5, steps after mold heat exchange:

[0079] Open the valves on the gas delivery pipeline 9, the input main pipeline 8, the output main pipeline 11 and the coolant return pipeline 14, and the high-pressure gas in the gas storage tank 5 enters the temperature conduction channel 27, and the coolant in the temperature conduction channel 27 returns to the coolant storage tank 6.

[0080] The present invention can quickly heat and cool the mold core in the mold cavity through the structural setting of the heat exchange system and the mold cavity plate, and the heating and cooling efficiency is high;

[0081] The heating method of the present invention includes a combination of heat-conducting oil and electric heating to ensure the heating temperature of the mold core;

[0082] The two sides of the mold core of the present invention 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;

[0083] The present invention cleans the temperature conduction channel by high-pressure gas before and after heating or cooling, thereby avoiding adverse effects of residual substances on heating or cooling.

[0084] In the description of the present invention, 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 invention 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 limiting the present invention. 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. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0085] In the description of the present invention, 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 indirectly connected 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 invention can be understood according to specific circumstances.

[0086] 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 principles of the present invention, and these improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A heating circulation system for an automobile component injection mold, comprising a heat exchange system and a mold cavity plate (3); Features: The heat exchange system comprises an electric heating box (1), a heat transfer oil storage tank (4), a gas storage tank (5) and a coolant storage tank (6); The mold cavity plate (3) comprises a first heating frame (15), a mold core (16) and a second heating frame (17), wherein the mold core (16) is located in the mold heating cavity formed by the first heating frame (15) and the second heating frame (17); An electric heating plate (24) is arranged on a first side of the first heating frame (15) or the second heating frame (17), and an electric heating connection line guide groove (25) distributed along the serpentine structure is arranged in the electric heating plate (24); a temperature conduction plate (26) is arranged on a second side of the first heating frame (15) or the second heating frame (17), and a temperature conduction flow channel (27) distributed along the serpentine structure is arranged in the temperature conduction plate (26); The plurality of electric heating connecting lines (2) of the electric heating box (1) are distributed in the electric heating connecting line guide groove (25); the output end of the heat transfer oil storage tank (4) is connected to the input main pipeline (8) of the mold cavity plate (3) through the heat transfer oil delivery pipeline (7); the output end of the gas storage tank (5) is connected to the input main pipeline (8) of the mold cavity plate (3) through the gas delivery pipeline (9); the output end of the coolant storage tank (6) is connected to the input main pipeline (8) of the mold cavity plate (3) through the coolant delivery pipeline (10); and the input main pipeline (8) is connected to the temperature transfer channel (27).

2. The heating circulation system for an automobile parts injection mold according to claim 1, characterized in that: The input end of the heat transfer oil storage tank (4) is connected to the output main pipeline (11) of the mold cavity plate (3) through a heat transfer oil return pipeline (12), and the output main pipeline (11) is connected to the temperature transfer flow channel (27).

3. The heating circulation system for an automobile component injection mold according to claim 1, characterized in that: The input end of the gas storage tank (5) is connected to the output main pipeline (11) of the mold cavity plate (3) through a gas return pipeline (13), and the output main pipeline (11) is connected to the temperature conduction channel (27).

4. The heating circulation system for an automobile component injection mold according to claim 1, characterized in that: The input end of the cooling liquid storage tank (6) is connected to the output main pipeline (11) of the mold cavity plate (3) through a cooling liquid return pipeline (14), and the output main pipeline (11) is connected to the temperature conduction channel (27).

5. The heating circulation system for an automobile component injection mold according to claim 1, characterized in that: The mold heating cavity comprises a first heating inner cavity (18) and a second heating inner cavity (22); the first heating inner cavity (18) is arranged between the electric heating plate (24) and the heat conducting plate (26) of the first heating frame (15); the second heating inner cavity (22) is arranged between the electric heating plate (24) and the heat conducting plate (26) of the second heating frame (17); and two sides of the mold core (16) are respectively located in the first heating inner cavity (18) and the second heating inner cavity (22).

6. The heating circulation system for an automobile component injection mold according to claim 1, characterized in that: Positioning columns (19) are arranged on both sides of the bottom of the first heating frame (15), guiding blocks (20) are arranged on both sides of the mold core (16), and positioning holes (23) are arranged on both sides of the top of the second heating frame (17), and the positioning columns (19) pass through the guide holes (21) on the guide blocks (20) and are connected to the positioning holes (23).

7. The heating circulation system for an automobile component injection mold according to claim 1, characterized in that: Pumps are installed on the heat transfer oil delivery pipeline (7), the gas delivery pipeline (9) and the coolant delivery pipeline (10).

8. The heating circulation system for an automobile component injection mold according to claim 1, characterized in that: Valves are installed on the heat transfer oil delivery pipeline (7), the input main pipeline (8), the gas delivery pipeline (9), the coolant delivery pipeline (10), the output main pipeline (11), the heat transfer oil return pipeline (12), the gas return pipeline (13) and the coolant return pipeline (14).

9. A heating cycle method for an automobile component injection mold according to any one of claims 1 to 8, characterized in that: The following steps are included in sequence: Step S1, mold heating pre-treatment step: The valves on the gas delivery pipeline (9), the input main pipeline (8), the output main pipeline (11) and the gas return pipeline (13) are opened, and the high-pressure gas in the gas storage tank (5) enters the temperature conduction flow channel (27), and the temperature conduction flow channel (27) is pre-cleaned; Step S2: Mold heating step: Step S21, opening the valves on the heat transfer oil delivery pipeline (7), the input main pipeline (8), the output main pipeline (11) and the heat transfer oil return pipeline (12), so that the heat transfer oil in the heat transfer oil storage tank (4) enters the temperature transfer flow channel (27); Step S22, the electric heating box (1) is powered on and performs auxiliary electric heating treatment on the mold core (16) located in the first heating inner cavity (18) and the second heating inner cavity (22) via the electric heating connecting line (2); Step S3, mold cooling pre-treatment step: The valves on the gas delivery pipeline (9), the input main pipeline (8), the output main pipeline (11) and the heat transfer oil return pipeline (12) are opened, so that the high-pressure gas in the gas storage tank (5) enters the heat transfer flow channel (27), and the heat transfer oil in the heat transfer flow channel (27) is returned to the heat transfer oil storage tank (4); Step S4: mold cooling step: Opening the valves on the coolant delivery pipeline (10), the input main pipeline (8), the output main pipeline (11) and the coolant return pipeline (14), so that the coolant in the coolant storage tank (6) enters the temperature transfer channel (27); Step S5, steps after mold heat exchange: The valves on the gas delivery pipeline (9), the input main pipeline (8), the output main pipeline (11) and the coolant return pipeline (14) are opened, and the high-pressure gas in the gas storage tank (5) enters the temperature transfer channel (27), and the coolant in the temperature transfer channel (27) is returned to the coolant storage tank (6).

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