A control box structure for a variable frequency mold temperature controller

Abstract

This utility model relates to the technical field of variable frequency mold temperature controllers, and proposes an electrical control box structure for a variable frequency mold temperature controller, including a box body and an electrical module disposed within the box body. The electrical module includes a mounting plate and several electrical components; these components are integrated on the mounting plate and form an integral electrical module mounted within the box body. This integrated electrical module makes the internal structure of the control box more compact and orderly. During later management and maintenance, technicians can more clearly and quickly locate the electrical components requiring repair, greatly improving maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of variable frequency mold temperature controllers, and specifically to the structure of an electrical control box for a variable frequency mold temperature controller. Background Technology

[0002] Mold temperature controllers are primarily used to control the temperature of molds, ensuring stability and efficiency during the production process. Through heating and cooling functions, they can precisely regulate the mold temperature, effectively improving the molding quality of the products.

[0003] The existing mold temperature controller consists of two parts: the front part is the electrical control box, and the rear part is used to install the corresponding piping structure, as well as mechanical devices such as heaters and water pumps. Therefore, the layout of electrical components in the electrical control box needs to be rationally designed to facilitate later management and maintenance. Utility Model Content

[0004] This invention proposes an electrical control box structure for a variable frequency mold temperature controller, integrating several electrical components onto a mounting plate to form an integrated electrical module housed within the box. This integrated electrical module makes the internal structure of the control box more compact and organized. During later management and maintenance, technicians can more clearly and quickly locate the electrical components requiring repair, greatly improving maintenance efficiency.

[0005] An electrical control box structure for a variable frequency mold temperature controller designed for this purpose includes a box body and an electrical module installed inside the box body;

[0006] The electrical module includes a mounting plate and several electrical components; the several electrical components are integrated on the mounting plate and form an electrical module that is installed as a whole inside the enclosure.

[0007] The variable frequency mold temperature controller includes a water storage unit, a water pump, and a heater for adjusting the mold temperature. One end of the water storage unit is connected to a water inlet device. The liquid output from the water inlet device passes through the water storage unit, the water pump, and the heater and enters the mold to adjust the mold temperature.

[0008] The electrical module includes a power-on relay module and a frequency converter that are electrically connected to the water pump to control the water pump's operating conditions. The frequency converter is electrically connected to the power-on relay module.

[0009] The electrical module includes a three-phase solid-state relay electrically connected to the heater to control the operating conditions of the heater; the three-phase solid-state relay is provided with a first heat sink fixed on the mounting plate;

[0010] The frequency converter and the three-phase solid-state relay are set separately and arranged at intervals on the mounting plate.

[0011] One side of the water storage unit is connected to a cooling drainage device, which includes a drain solenoid valve.

[0012] The electrical module includes a single-phase solid-state relay that is electrically connected to the drain solenoid valve to control the opening and closing of the drain solenoid valve.

[0013] The single-phase solid-state relay is located above the frequency converter;

[0014] The single-phase solid-state relay is equipped with a second heat sink fixed on the mounting plate.

[0015] The cooling drainage device includes a cooling unit connected to a water storage unit via a connecting pipe, and a drain solenoid valve is installed on the connecting pipe between the water storage unit and the cooling unit.

[0016] The electrical module includes a drainage energizing relay for use in conjunction with the cooling unit's drainage operation.

[0017] The connecting pipe between the heater and the mold is equipped with a pressure relief safety valve, and the electrical module includes an exhaust power relay that is electrically connected to the pressure relief safety valve to control the opening and closing of the pressure relief safety valve.

[0018] The energizing relay module, the exhaust energizing relay, and the drainage energizing relay are arranged in the same linear array on the mounting plate.

[0019] The heater is equipped with a temperature control device, which includes a temperature probe for extending into and detecting the temperature of the heater. The electrical module includes a switch circuit breaker that is electrically connected to the temperature control device. The switch circuit breaker and the energizing relay module are arranged in the same linear array on the mounting plate.

[0020] When the heater temperature is higher than the preset temperature of the temperature control device, the circuit breaker will trip and close.

[0021] The temperature control device is a rotary over-temperature protector, and the knob of the rotary over-temperature protector is used to set the protection temperature of the heater.

[0022] The mounting plate is provided with terminal blocks for connecting corresponding electrical components and a cable tray for fixing and guiding. The cable tray is provided with two positioning groups arranged vertically at intervals. The positioning groups are provided with through slots for passing wires. The two positioning groups and the inner side of the cable tray form a receiving slot for installing and accommodating wires.

[0023] The mounting plate is detachably installed inside the box; the outside of the box is provided with a heat dissipation and exhaust port that connects the outside of the box with the inside.

[0024] The beneficial technical effects of this utility model are as follows:

[0025] Several electrical components are integrated and mounted on a mounting plate to form an electrical module installed as a whole inside the enclosure. The integrated electrical module makes the internal structure of the electrical control box more compact and orderly. During later management and maintenance, technicians can more clearly and quickly locate the electrical components that need to be repaired, which greatly improves maintenance efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the internal structure of the mold temperature controller electrical control box according to an embodiment of the present invention.

[0027] Figure 2 This is a schematic diagram of the wiring board structure inside the electrical control box of the mold temperature controller according to an embodiment of the present invention.

[0028] Figure 3 This is a schematic diagram of the structure of a three-phase solid-state relay according to an embodiment of the present invention.

[0029] Figure 4 This is a schematic diagram of the structure of a single-phase solid-state relay according to an embodiment of the present invention.

[0030] Figure 5 This is a schematic diagram of the initial water inlet structure of a mold temperature controller according to an embodiment of the present invention.

[0031] Figure 6 This is a schematic diagram of the structure of the circulating water circuit between the mold and the mold temperature controller according to an embodiment of the present invention, and a schematic diagram of the structure of the mold temperature controller discharging high-pressure gas during operation.

[0032] Figure 7 This is a schematic diagram of the structure of a mold temperature controller in the process of cooling down a mold during temperature regulation, according to an embodiment of the present invention. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. In order to make the above-mentioned objects, features and advantages of the present application more apparent and understandable, many specific details are set forth in the following description in order to provide a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0034] See Figures 1-7 An electrical control box structure for a variable frequency mold temperature controller includes a box body 1 and an electrical module disposed within the box body 1;

[0035] The electrical module includes a mounting plate 2 and several electrical components; the several electrical components are integrated on the mounting plate 2 and form an electrical module that is installed as a whole in the housing 1.

[0036] Several electrical components are integrated onto mounting plate 2, forming an electrical module that is installed as a whole within the enclosure 1. This integrated electrical module makes the internal structure of the control box more compact and orderly. During later management and maintenance, technicians can more clearly and quickly locate the electrical components requiring repair, greatly improving maintenance efficiency. Secondly, integrating the electrical components onto mounting plate 2 facilitates unified planning and layout of the circuit. The electrical components are arranged sequentially on mounting plate 2, reducing cross-interference between lines and lowering the probability of circuit failures. Furthermore, the modular structure makes replacing or upgrading electrical components more convenient. It eliminates the need for large-scale disassembly and rewiring of the entire control box; only the corresponding mounting plate 2 and its electrical components need to be replaced, effectively reducing maintenance and time costs.

[0037] The variable frequency mold temperature controller includes a water storage unit, a water pump, and a heater for adjusting the mold temperature. One end of the water storage unit is connected to a water inlet device. The liquid output from the water inlet device passes through the water storage unit, the water pump, and the heater and enters the mold to adjust the mold temperature.

[0038] The electrical module includes a power-on relay module 3 electrically connected to the water pump to control the water pump's operating conditions and a frequency converter 4, with the frequency converter 4 electrically connected to the power-on relay module 3.

[0039] During the mold temperature regulation process, the operation of the water pump can be adjusted in real time through the cooperation of the frequency converter 4 and the energized relay module 3. The water pump can be controlled according to the mold temperature, thereby achieving energy saving and solving the problem of high energy consumption caused by frequent start-stop of traditional mold temperature controllers.

[0040] In this embodiment, the energized relay module 3 includes three energized relays arranged in a linear array. The housing 1 is provided with a door 18, which is opened and closed on the housing 1 via a hinge. The door 18 is provided with a circuit board. All electrical components on the electrical module are electrically connected to the circuit board. The energized relay module 3 sends a signal to the controller of the circuit board, and the controller of the circuit board outputs a signal to the frequency converter 4, so that the frequency converter 4 controls the water pump.

[0041] The electrical module includes a three-phase solid-state relay 5 that is electrically connected to the heater to control the operating conditions of the heater; the three-phase solid-state relay 5 is provided with a first heat sink 6 fixed on the mounting plate 2.

[0042] The frequency converter 4 and the three-phase solid-state relay 5 are set separately and arranged at intervals on the mounting plate 2.

[0043] On the one hand, the three-phase solid-state relay 5 is used to control the operating conditions of the heater. On the other hand, the first heat sink 6 effectively solves the problem of heat dissipation generated by the three-phase solid-state relay 5 during operation, avoiding performance degradation or even damage due to overheating, and extending the service life of the three-phase solid-state relay 5. In addition, the frequency converter 4 and the three-phase solid-state relay 5 are arranged separately and alternately, without integrating the electrical components controlling the water pump and heater into the same frequency converter module. The mold temperature controller needs to frequently cool down and heat up the mold temperature, and the operating conditions of the water pump and heater need to be adjusted. The frequency converter 4 and the three-phase solid-state relay 5 are set up independently. The frequency converter 4 controls the water pump alone, and the three-phase solid-state relay 5 controls the heater alone, which has good stability and reduces current signal interference.

[0044] One side of the water storage unit is connected to a cooling drainage device, which includes a drain solenoid valve, a drain pipe, etc.

[0045] The electrical module includes a single-phase solid-state relay 7 that is electrically connected to the drain solenoid valve to control the opening and closing of the drain solenoid valve.

[0046] The single-phase solid-state relay 7 is located above the frequency converter 4;

[0047] The single-phase solid-state relay 7 is provided with a second heat sink 10 fixed on the mounting plate 2.

[0048] A single-phase solid-state relay 7 is used to send an electrical signal to the drain solenoid valve. Since the mold temperature controller needs to repeatedly raise and lower the temperature of the mold, the drain solenoid valve needs to be repeatedly opened and closed during this process. If a regular energized relay were used, it would overheat and be unreliable. The single-phase solid-state relay 7, however, has a long lifespan and is suitable for this type of repeated cooling process. The second heat sink 10 further assists in dissipating heat from the single-phase solid-state relay 7.

[0049] The cooling drainage device includes a cooling unit connected to a water storage unit via a connecting pipe, and a drain solenoid valve is installed on the connecting pipe between the water storage unit and the cooling unit.

[0050] The electrical module includes a drain energizing relay 8 for coordinating with the cooling unit's drainage operation. The cooling unit has a water outlet; when the water level sensor within the cooling unit sends a high-level signal, the drain energizing relay 8 sends an electrical signal to another drain solenoid valve, which then opens to discharge the liquid from the cooling unit. Because the temperature of the circulating liquid in the mold is too high, it cannot be discharged directly to avoid thermal damage to the external drainage pipes. Therefore, the liquid needs to be cooled by the cooling unit before being discharged. After the liquid is discharged, the water inlet device opens to replenish water.

[0051] The water inlet device includes an inlet pipe and a water source (tap water) connected to the inlet pipe.

[0052] In this embodiment, a spiral flow channel may be provided in the cooling unit to increase the liquid flow time and achieve the natural heat dissipation effect of the liquid during the flow process.

[0053] The connecting pipe between the heater and the mold is equipped with a pressure relief safety valve, and the electrical module includes an exhaust power relay 9 that is electrically connected to the pressure relief safety valve to control the opening and closing of the pressure relief safety valve.

[0054] The energized relay module 3, the exhaust energized relay 9, and the drainage energized relay 8 are arranged in the same linear array on the mounting plate 2.

[0055] During the initial water intake, the water inlet device opens, and the liquid first passes through the water storage unit. Then, the water pump draws the liquid from the water storage unit into the heater for heating. After heating, the liquid enters the mold. When the water storage unit is full, the water inlet device closes, and the liquid continuously circulates through the water storage unit, water pump, heater, and mold, forming a water circulation loop. Figure 6 As shown, the mold heats up as the liquid is continuously heated. The continuously heated liquid generates hot air during the circulation process in the pipeline. When the air pressure is too high, the pressure relief safety valve will open to provide pressure relief and safety protection.

[0056] The heater is equipped with a temperature control device, which includes a temperature probe for extending into and detecting the temperature of the heater. The electrical module includes a switch circuit breaker 11 that is electrically connected to the temperature control device. The switch circuit breaker 11 and the energized relay module 3 are arranged in the same linear array on the mounting plate 2.

[0057] When the heater temperature is higher than the preset temperature of the temperature control device, the circuit breaker 11 will trip and close.

[0058] The temperature control device is a rotary over-temperature protector, and the knob of the rotary over-temperature protector is used to set the protection temperature of the heater.

[0059] The temperature probe of the rotary over-temperature protector, in conjunction with the circuit breaker 11, provides mechanical protection by promptly cutting off the heater power supply, preventing equipment damage or even safety accidents caused by excessive temperature, and ensuring the safe operation of the mold temperature controller. The rotary over-temperature protector's knob allows operators to flexibly set the heater's protection temperature according to different production needs, improving the flexibility and convenience of temperature control.

[0060] The mounting plate 2 is provided with a terminal block 12 for connecting corresponding electrical components and a cable tray 13 for fixing and guiding. The cable tray 13 is provided with two positioning groups 15 arranged vertically at intervals. The positioning groups 15 are provided with through slots 14 for passing wires. The two positioning groups 15 and the inner side of the cable tray 13 form a receiving slot 16 for installing and accommodating wires.

[0061] The terminal block 12 makes the electrical connection between electrical components more standardized and secure, facilitating the connection, disassembly, and maintenance of the wiring, and reducing the probability of failures caused by poor wiring contact. The design of the cable tray 13 and its positioning group 15, through slot 14, and receiving slot 16 effectively fixes and guides the wires, preventing them from becoming tangled and messy inside the electrical control box.

[0062] In this embodiment, the circuit breaker 11, the energizing relay module 3, the exhaust energizing relay 9, and the drainage energizing relay 8 are arranged in a linear array. Cable trays 13 are provided above and below the circuit breaker 11, the energizing relay module 3, the exhaust energizing relay 9, and the drainage energizing relay 8. A single-phase solid-state relay 7 is located below the lower cable tray 13. A terminal block 12 and a shorter cable tray 13 are located outside the single-phase solid-state relay 7. The terminal block 12 and the shorter cable tray 13 are arranged vertically. A frequency converter 4 is located below the single-phase solid-state relay 7, and a three-phase solid-state relay 5 is located below the shorter cable tray 13.

[0063] The mounting plate 2 is detachably installed inside the housing 1; the outer side of the housing 1 is provided with a heat dissipation and exhaust port 17 that connects the outside of the housing 1 with the inside.

[0064] Before installation, all electrical components are integrated onto the mounting plate 2. After all electrical component wiring is completed, the entire mounting plate 2 is installed inside the housing 1, making installation convenient.

[0065] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An electric control box structure of a variable frequency mold temperature controller, characterized by: Includes a housing (1) and an electrical module installed inside the housing (1); The electrical module includes a mounting plate (2) and several electrical components; the several electrical components are integrated on the mounting plate (2) and constitute an electrical module installed as a whole in the housing (1); The electrical module includes a power-on relay module (3) electrically connected to the water pump to control the water pump's operating conditions and a frequency converter (4), with the frequency converter (4) electrically connected to the power-on relay module (3). The electrical module includes a drainage energizing relay (8) for use in conjunction with the cooling unit's drainage operation. The electrical module includes an exhaust energizing relay (9) that is electrically connected to the pressure relief safety valve to control the opening and closing of the pressure relief safety valve. The energized relay module (3), the exhaust energized relay (9), and the drainage energized relay (8) are arranged in the same linear array on the mounting plate (2).

2. The electric control box structure of the variable frequency mold temperature controller according to claim 1, characterized in that: The variable frequency mold temperature controller includes a water storage unit, a water pump, and a heater for adjusting the mold temperature. One end of the water storage unit is connected to a water inlet device. The liquid output from the water inlet device passes through the water storage unit, the water pump, and the heater into the mold to adjust the mold temperature.

3. The electrical control box structure of the variable frequency mold temperature controller according to claim 2, characterized in that: The electrical module includes a three-phase solid-state relay (5) electrically connected to the heater to control the operating conditions of the heater; the three-phase solid-state relay (5) is provided with a first heat sink (6) fixed on the mounting plate (2). The frequency converter (4) and the three-phase solid-state relay (5) are set separately and arranged at intervals on the mounting plate (2).

4. The electrical control box structure of the variable frequency mold temperature controller according to claim 2, characterized in that: One side of the water storage unit is connected to a cooling drainage device, which includes a drain solenoid valve. The electrical module includes a single-phase solid-state relay (7) that is electrically connected to the drain solenoid valve to control the opening and closing of the drain solenoid valve. The single-phase solid-state relay (7) is located above the frequency converter (4); The single-phase solid-state relay (7) is provided with a second heat sink (10) fixed on the mounting plate (2).

5. The electrical control box structure of the variable frequency mold temperature controller according to claim 4, characterized in that: The cooling drainage device includes a cooling unit connected to a water storage unit via a connecting pipe, and a drain solenoid valve is installed on the connecting pipe between the water storage unit and the cooling unit.

6. The electrical control box structure of the variable frequency mold temperature controller according to claim 2, characterized in that: A pressure relief safety valve is installed on the connecting pipe between the heater and the mold.

7. The electrical control box structure of the variable frequency mold temperature controller according to claim 2, characterized in that: The heater is equipped with a temperature control device, which includes a temperature probe for extending into and detecting the temperature of the heater. The electrical module includes a switch circuit breaker (11) that is electrically connected to the temperature control device. The switch circuit breaker (11) and the energized relay module (3) are arranged in the same linear array on the mounting plate (2). When the heater temperature is higher than the preset temperature of the temperature control device, the circuit breaker (11) will trip and close. The temperature control device is a rotary over-temperature protector, and the knob of the rotary over-temperature protector is used to set the protection temperature of the heater.

8. The electrical control box structure of the variable frequency mold temperature controller according to claim 1, characterized in that: The mounting plate (2) is provided with a terminal block (12) for connecting the corresponding electrical components and a cable tray (13) for fixing and guiding. The cable tray (13) is provided with two positioning groups (15) arranged vertically at intervals. The positioning groups (15) are provided with through slots (14) for passing wires. A receiving slot (16) for installing and accommodating wires is formed between the two positioning groups (15) and the inner side of the cable tray (13).

9. The electrical control box structure of the variable frequency mold temperature controller according to claim 1, characterized in that: The mounting plate (2) is detachably installed inside the box (1); the outside of the box (1) is provided with a heat dissipation and exhaust port (17) that connects the outside and inside of the box (1).

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