Heating and cooling equipment for injection mold

Abstract

The utility model relates to heating and cooling equipment for an injection mold. The heating and cooling equipment comprises an equipment cabinet body, wherein the front and the rear of the equipment cabinet body are opened; equipment cabinet doors are mounted at the front and the rear openings of the equipment cabinet body; a refrigerator is arranged in the equipment cabinet body below the heater, and a heat insulation plate is arranged in the equipment cabinet body between the heater and the refrigerator; the heater is electrically connected with the mold heat conducting plate located in the mold cavity through an electric heating connecting wire, and the refrigerator is connected with the mold heat conducting plate located in the mold cavity through a refrigerating pipe. Through the structural arrangement that the heater and the refrigerator are installed in the equipment cabinet body, the equipment integration is high, and the equipment investment and the occupied area can be greatly reduced; according to the utility model, through the arrangement of a connecting structure of the heater, the refrigerator and the mold heat-conducting plate, the mold core in the lower mold cavity can be quickly heated and cooled, and the working efficiency is higher.

Description

Technical Field

[0001] This utility model relates to the technical field of injection molds, and in particular to a heating and cooling device for injection molds. Background Technology

[0002] Injection molding is one of the most widely used plastic molding methods. In the injection molding process, molten plastic is injected into a mold cavity to give it a certain shape, and then cools and solidifies within the mold cavity. Since the molding and cooling of the molten plastic are all completed within the mold cavity, mold cavity temperature control has a significant impact on the quality of the final injection-molded product and the molding cycle. Mold temperature is also one of the most important parameters in the injection molding process.

[0003] A search revealed Chinese patent publication number CN211363357U, which discloses a rapid heating and cooling system for injection molds. The system includes a fixed mold base plate, a guide post at the upper end of the fixed mold base plate, a fixed mold core near the inner side of the guide post at the upper end of the fixed mold base plate, a moving mold plate at the outer side of the guide post, two sets of connecting mechanisms at one end of the fixed mold core, a cooling water outlet pipe at one end of each connecting mechanism, a circulating water pump at one end of the cooling water outlet pipe, a water storage tank at the outer side of the circulating water pump, a fixing groove inside the moving mold plate, a spiral resistance wire inside the fixing groove, and a fixing plate at the upper end of the fixing groove. This rapid heating and cooling system for injection molds provides good sealing between the cooling water outlet pipe and the fixed mold core, reducing leakage, resulting in good heating performance, and facilitating the replacement of the spiral resistance wire inside the fixing groove.

[0004] In existing mold heating and cooling systems, heating is generally achieved by using a mold temperature controller and a pump in the power transmission system to move hot fluid from a water tank equipped with a built-in heater and cooler to the mold, and then from the mold back to the water tank. This heating method results in a large investment in equipment and a large footprint, poor equipment integration, and low working efficiency.

[0005] In view of the above-mentioned shortcomings, the designer actively researched and innovated in order to create a heating and cooling device for injection molds, making it more industrially valuable. Utility Model Content

[0006] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a heating and cooling device for injection molds.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A heating and cooling device for injection molds includes a cabinet with openings at both the front and back, and cabinet doors installed at both the front and back openings of the cabinet, and a heater installed inside the cabinet.

[0009] A cooler is installed in the equipment cabinet below the heater. The heater is located on the side of the equipment cabinet near the top, and the cooler is located on the side of the equipment cabinet near the bottom. A heat insulation board is installed in the equipment cabinet between the heater and the cooler.

[0010] The heater is electrically connected to the mold heat-conducting plate located in the mold cavity via an electric heating connection line, and the cooler is connected to the mold heat-conducting plate located in the mold cavity via a cooling pipe.

[0011] As a further improvement of this utility model, several inlet and outlet holes are respectively provided on the equipment cabinet on the side above the heater and on the equipment cabinet on the side below the cooler.

[0012] As a further improvement of this utility model, heat dissipation windows are provided on both the left and right sides of the equipment cabinet, and several heat dissipation holes are provided on the heat dissipation windows.

[0013] As a further improvement of this utility model, a dustproof net is installed on the equipment cabinet outside the heat dissipation window.

[0014] As a further improvement of this utility model, the bottom left and right sides of the heater and the cooler are provided with locking blocks distributed along the front and back direction, and the equipment cabinet is provided with a slot that matches the locking blocks. The locking blocks are inserted into the slots along the front and back direction.

[0015] As a further improvement of this utility model, baffles are installed on the equipment cabinets on both the front and rear sides of the slot, and the heater and cooler on the inside are limited to the equipment cabinet by the two baffles.

[0016] As a further improvement of this utility model, the baffle is detachably installed on the equipment cabinet.

[0017] As a further improvement of this utility model, a number of interconnected and serpentine electric heating wire guide cavities are provided in the mold heat-conducting plate, with the electric heating wires distributed in the electric heating wire guide cavities.

[0018] As a further improvement of this utility model, a number of interconnected and serpentine cooling pipe guide cavities are provided in the mold heat-conducting plate, with the cooling pipes distributed in the cooling pipe guide cavities.

[0019] As a further improvement of this utility model, the front end of the refrigeration pipe guide cavity is also connected to an external air pump.

[0020] By means of the above solution, this utility model has at least the following advantages:

[0021] This utility model, through its structural design of installing heaters and coolers inside the equipment cabinet, achieves a high degree of equipment integration and can significantly reduce equipment investment and floor space requirements.

[0022] This invention, through the connection structure of the heater and cooler with the mold heat-conducting plate, can quickly heat and cool the mold core in the lower mold cavity, resulting in high work efficiency.

[0023] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the following are the preferred embodiments of this utility model and are described in detail with reference to the accompanying drawings. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a heating and cooling device for injection molds according to the present invention;

[0026] Figure 2 yes Figure 1 The structural diagram on the left;

[0027] Figure 3 yes Figure 1 A schematic diagram of the structure after removing the equipment cabinet door;

[0028] Figure 4 yes Figure 3 A schematic diagram of the structure after removing the heater, cooler, and insulation board;

[0029] Figure 5 yes Figure 3 Schematic diagram of the structure of the intermediate heater;

[0030] Figure 6 This is a schematic diagram illustrating the working principle of this utility model.

[0031] The meanings of the labels in the figures are as follows.

[0032] Equipment cabinet 1, equipment cabinet door 2, inlet and outlet 3, heat dissipation window 4, dustproof net 5, heat dissipation hole 6, heater 7, cooler 8, heat insulation board 9, baffle 10, card slot 11, card block 12, mold heat conduction plate 13, air pump 14. Detailed Implementation

[0033] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0034] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0035] The first embodiment of this utility model:

[0036] like Figures 1-5 As shown, this utility model discloses a heating and cooling device for injection molds, mainly comprising a cabinet 1 with openings at both the front and rear, and cabinet doors 2 installed at both the front and rear openings of the cabinet 1. A heater 7 is installed inside the cabinet 1 near the top for heating the mold heat-conducting plate 13 within the mold cavity, and a cooler 8 is installed inside the cabinet 1 near the bottom for cooling the mold heat-conducting plate 13 within the mold cavity.

[0037] The heater 7 and cooler 8 described above are detachably installed in the equipment cabinet 1 along the front-to-back direction. Each of the heater 7 and cooler 8 has a locking block 12 distributed along the front-to-back direction on both its left and right sides. The equipment cabinet 1 has slots 11 that are adapted to the locking blocks 12 of the heater 7 and cooler 8, respectively. These slots 11 are welded into the equipment cabinet 1 or integrally formed with it. When installing the heater 7 and cooler 8, the locking blocks 12 at the bottom of the heater 7 and cooler 8 are inserted into the slots 11 in the equipment cabinet 1 along the front-to-back direction.

[0038] In addition, baffles 10 are installed on both the front and rear sides of the equipment cabinet 1 of the slot 11. The shape of the baffles 10 is the same as that of the equipment cabinet 1, and they are used to confine the heater 7 and the cooler 8 inside the equipment cabinet 1. The baffles 10 are generally detachably installed on the equipment cabinet 1, for example, by means of multiple bolts or embedding, so as to facilitate the removal of the baffles 10 and thus facilitate the removal of the heater 7 and the cooler 8 from the equipment cabinet 1.

[0039] To reduce the impact of heat generated by the heater on the cooler, and vice versa, a heat insulation board 9 is installed inside the equipment cabinet 1 between the heater 7 and the cooler 8. The heat insulation board 9 can be made of materials such as polyurethane foam or fiberglass to prevent heat conduction. The heater 7 is located near the top of the equipment cabinet 1, while the cooler 8 is located near the bottom, ensuring they are installed in different areas of the cabinet to avoid direct heat transfer and mutual interference. The heater 7 is positioned at the top of the equipment cabinet 1 because hot air naturally rises, promoting even heat distribution within the cabinet. The cooler 8 is located at the bottom of the equipment cabinet 1, utilizing the principle of cold air sinking to concentrate the low-temperature area in the lower part, facilitating better temperature control.

[0040] Ventilation windows 4 are provided on both the left and right sides of the equipment cabinet 1. Several ventilation holes 6 are provided on the ventilation windows 4. Dustproof nets 5 are installed on the equipment cabinet 1 outside the ventilation windows 4. A cooling fan can be installed inside the equipment cabinet 1 through the multiple ventilation holes 6 on the ventilation windows 4 to allow the air inside the cabinet to circulate and dissipate the heat generated by the heater in a timely manner.

[0041] like Figure 6 The working principle of this utility model is as follows:

[0042] The heater 7 is electrically connected to the mold heat-conducting plate 13 located in the mold cavity via an electric heating connection line. The cooler 8 is connected to the mold heat-conducting plate 13 located in the mold cavity via a cooler pipe. Several inlet and outlet holes 3 are respectively provided on the equipment cabinet 1 on the side above the heater 7 and on the equipment cabinet 1 on the side below the cooler 8 for the electric heating connection line and the cooler pipe to enter and exit.

[0043] Heating process: The electric heating wires on heater 7 are distributed in a serpentine pattern within the electric heating wire guide cavity of the mold heat-conducting plate 13; Cooling process: The cooling pipes on cooler 8 are distributed in a serpentine pattern within the cooling pipe guide cavity of the mold heat-conducting plate 13. Furthermore, cooler 8 can be a water-cooled cooler or other commonly used cooling structure. The aforementioned electric heating wire guide cavity and cooling pipe guide cavity are located close to each other but are not in the same cavity. This allows the heating and cooling processes to be performed independently, and the heating and cooling processes do not occur simultaneously, thus avoiding mutual interference.

[0044] In addition, after the refrigeration process is completed, air can be blown into the refrigeration pipe guide cavity by the air pump 14 at the front end of the refrigeration pipe guide cavity, and the refrigerant (which can be a refrigerant gas or a refrigerant liquid) in the refrigeration pipe guide cavity can be blown out of the refrigeration pipe guide cavity and flow back into the refrigerator 8.

[0045] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0046] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A heating and cooling device for injection mold, comprising a device cabinet (1) with openings at front and back and device cabinet doors (2) installed at the openings of the device cabinet (1), and a heater (7) installed in the device cabinet (1); characterized in that: a refrigerator (8) is installed in the device cabinet (1) below the heater (7), the heater (7) is located at one side near the top in the device cabinet (1), the refrigerator (8) is located at one side near the bottom in the device cabinet (1), and a heat insulation plate (9) is installed in the device cabinet (1) between the heater (7) and the refrigerator (8); the heater (7) is electrically connected with a mold heat conduction plate (13) in a mold cavity through an electric heating connecting wire, and the refrigerator (8) is connected with the mold heat conduction plate (13) in the mold cavity through a refrigeration pipe. A plurality of access holes (3) are formed on one side of the device cabinet (1) above the heater (7) and on one side of the device cabinet (1) below the refrigerator (8). Heat dissipation windows (4) are formed on both sides of the device cabinet (1), and a plurality of heat dissipation holes (6) are formed in the heat dissipation windows (4). A dust screen (5) is installed on the device cabinet (1) outside the heat dissipation windows (4).

2. A heating and cooling apparatus for an injection mold as defined in claim 1, wherein Card blocks (12) are arranged on the bottom and both sides of the heater (7) and the refrigerator (8) in the front and back directions, and card slots (11) are arranged in the device cabinet (1) to match the card blocks (12), and the card blocks (12) are inserted into the card slots (11) in the front and back directions.

3. A heating and cooling apparatus for an injection mold as defined in claim 1, wherein Baffles (10) are installed on the device cabinet (1) on both sides of the card slots (11), and the heater (7) and the refrigerator (8) on the inner side are limited in the device cabinet (1) by the two baffles (10) in front and back.

4. A heating and cooling apparatus for an injection mold as defined in claim 3, wherein The baffles (10) are detachably installed on the device cabinet (1).

5. A heating and cooling apparatus for an injection mold as defined in claim 1, wherein, A plurality of electric heating connecting wire guide cavities connected together and in a snake shape are arranged in the mold heat conduction plate (13), and the electric heating connecting wire is distributed in the electric heating connecting wire guide cavities.

6. A heating and cooling apparatus for an injection mold as defined in claim 5, wherein A plurality of refrigeration pipe guide cavities connected together and in a snake shape are arranged in the mold heat conduction plate (13), and the refrigeration pipe is distributed in the refrigeration pipe guide cavities.

7. A heating and cooling apparatus for an injection mold as defined in claim 6, wherein The front end of the refrigeration pipe guide cavities is also connected with an external air pump (14).

8. A heating and cooling apparatus for an injection mold as defined in claim 1, wherein, ​ 9. A heating and cooling apparatus for an injection mold as defined in claim 1, wherein, ​ 10. A heating and cooling apparatus for an injection mold as defined in claim 9, wherein, ​

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