Protective device for electric box of numerical control machine tool

By introducing a combination design of assembly tank, moisture-absorbing plate and electric heater into the electrical box of CNC machine tools, an active drying system is formed, which solves the problem of poor sealing and improves the protective effect of the electrical box and the stability of the equipment.

CN224238972UActive Publication Date: 2026-05-15SHANGHAI DINGLONG PACKAGING MASCH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI DINGLONG PACKAGING MASCH CO LTD
Filing Date
2025-06-18
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

The existing electrical box protection structure of CNC machine tools has poor sealing performance, making it difficult to effectively protect electrical components in production workshops with high humidity, resulting in a high risk of short circuits or corrosion.

Method used

The system employs an assembly slot and sliding groove structure within the enclosure, combined with a moisture-absorbing plate and an electric heater, to form an active heating and ventilation system. Through the synergistic action of the intake and exhaust fans, combined with silica gel strip filtration, it achieves dry air circulation and absorbs moisture.

Benefits of technology

It improves the operational stability and service life of the CNC machine tool electrical box, simplifies maintenance operations, and reduces the load on the internal drying components.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of machine tool electric box protection, in particular to a numerical control machine tool electric box protection device. Comprising a box body, one side of the box body is provided with a pair of hinged leaf doors, the box body is internally provided with a numerical control panel, the two sides of the box body are each provided with a pair of ventilating fans, one side of the box body is provided with an electric heater, the interior of the box body is fixedly connected with a pair of assembling groove bodies, and the inner sides of the assembling groove bodies are provided with sliding grooves; and a moisture absorption plate is arranged in the sliding groove in a sliding manner. The technical problem to be solved by the utility model is that a conventional protection structure is poor in sealing performance and is difficult to meet the safety protection requirement of a numerical control electric box in a production workshop with heavy moisture.
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Description

Technical Field

[0001] This utility model relates to the field of machine tool electrical box protection technology, and in particular to a protective device for CNC machine tool electrical boxes. Background Technology

[0002] CNC machine tools, or CNC control systems, are high-precision equipment that achieves automatic machining of workpieces through program control. They are widely used in manufacturing fields such as automobiles, aerospace, and mold making. Their highly integrated electrical control systems are the core of the entire machine's operation, and their operational stability directly affects machining accuracy and equipment lifespan.

[0003] Current CNC machine tool electrical control systems are generally installed inside the machine tool's electrical box, which uses a closed structure to protect the internal components. However, in production workshops involving dyeing, printing, or some seafood processing, there is a high level of moisture and steam, which can easily cause short circuits in the electrical box or corrosion of electrical components. Traditional protection methods often use a hinged protective door structure with a sealing rubber ring on the inside, which only provides a simple shielding effect and has poor sealing and protection capabilities. Utility Model Content

[0004] The technical problem to be solved by this utility model is that the existing protective structure has poor sealing performance and is difficult to meet the safety protection requirements of CNC electrical boxes in production workshops with high humidity.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a protective device for the electrical box of a CNC machine tool, including a box body, a pair of hinged fan doors on one side of the box body, a CNC panel inside the box body, a pair of ventilation fans on both sides of the box body, an electric heater on one side of the box body, a pair of assembly slots fixedly connected inside the box body, a sliding groove is opened on the inner side of the assembly slot, and a moisture-absorbing plate is slidably arranged in the sliding groove.

[0006] As a further improvement of this utility model, rectangular frame structure guard compartments are respectively provided on both sides of the box, and a ventilation groove is provided through one side of the guard compartment, and silicone strips with gaps are filled between the ventilation grooves.

[0007] As a further improvement of this utility model, the two ventilation fans include an intake fan and an exhaust fan, the electric heater is disposed on the outside of the intake fan, and the output end is provided with a plurality of staggered electric heating tubes, the electric heating tubes being located on the inside of one side of the intake fan.

[0008] As a further improvement of this utility model, the moisture-absorbing plate includes an assembly plate that fits into the interior of the box, and a silica gel drying plate is fixedly disposed on the inner side of the assembly plate.

[0009] As a further improvement of this utility model, the outer side of the moisture-absorbing plate is provided with an insertion handle, the sliding groove extends outward to the hinged door, and the sliding groove is provided with an abutment block for limiting the position of the moisture-absorbing plate.

[0010] As a further improvement of this utility model, the top of the moisture-absorbing plate is provided with a screw hole, and the moisture-absorbing plate is threadedly connected to a bolt through the screw hole. The box body is provided with a beam plate for fastening the moisture-absorbing plate.

[0011] The beneficial effects of this utility model are as follows: The internal assembly groove and sliding recess structure of the housing allow for easy disassembly and replacement of the moisture-absorbing plate. Users can flexibly replace the silica gel drying plate according to the usage cycle, making maintenance simple and quick. The inserted handle enhances operational convenience, and the direct removal design avoids interference with other electrical control components during internal disassembly and assembly. Simultaneously, the barrier chamber and its ventilation channel structure move the filtration function forward to the air intake path, reducing the load on the internal drying components. The coordinated operation of the electric heater and the intake fan forms an active heating and ventilation system, which can quickly dissipate moisture inside the housing during initial startup, improving equipment response efficiency. Attached Figure Description

[0012] Figure 1 This is an overall schematic diagram of a protective device for the electrical box of a CNC machine tool according to this utility model;

[0013] Figure 2 This is a partial sectional view of a protective device for the electrical box of a CNC machine tool according to this utility model;

[0014] Figure 3 This is a sectional view of the components of a protective device for the electrical box of a CNC machine tool according to this utility model;

[0015] Figure 4 This is a component illustration of a protective device for the electrical box of a CNC machine tool according to this utility model.

[0016] As shown in the figure: 1. Box body; 2. Electric heater; 3. Assembly tank; 4. Moisture-absorbing plate; 5. Barrier compartment; 6. Ventilation slot; 7. Inlet fan; 8. Outlet fan; 9. Silica gel drying plate; 10. Insertion handle; 11. Abutment block; 12. Bolt. Detailed Implementation

[0017] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly mentioned in this specification are defined relative to their structure and are relative concepts. Therefore, they may vary depending on their location and usage; thus, these or other directional terms should not be interpreted as restrictive terms.

[0018] The singular forms “a,” “the,” and “the” used in this specification are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes one or more of the associated listed items, any or all possible combinations thereof.

[0019] To make the technical problems to be solved, the technical solutions, and the beneficial effects of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0020] This utility model provides a protective device for the electrical box of a CNC machine tool, including a box 1;

[0021] As attached Figure 1-4 As shown, a pair of hinged fan doors are provided on one side of the housing 1. A CNC panel is installed inside the housing 1. A pair of ventilation fans are provided on each side of the housing 1, including an intake fan 7 and an exhaust fan 8. An electric heater is located outside the intake fan 7, and multiple staggered electric heating tubes are provided at the output end. The electric heating tubes are located inside one side of the intake fan 7 to further ensure the dryness of the incoming air. An electric heater 2 is provided on one side of the housing 1. Rectangular frame-structured baffle chambers 5 are provided on each side of the housing 1, and a ventilation groove 6 is opened through one side of the baffle chamber 5. The ventilation grooves 6 are filled with silicone strips with gaps to filter moisture during the air intake process. A pair of assembly slots 3 are fixedly connected inside the housing 1. A sliding groove is opened on the inner side of the assembly slot 3, and a moisture-absorbing plate 4 is slidably installed in the sliding groove.

[0022] As attached Figure 1 , 4 As shown, the moisture-absorbing plate 4 includes an assembly plate that fits into the interior of the housing 1. A silica gel drying plate 9 is fixedly installed on the inner side of the assembly plate for drying and absorbing the internal space. A handle 10 is provided on the outer side of the moisture-absorbing plate 4, and a sliding groove extends outward to the hinged door. An abutment block 11 for limiting the position of the moisture-absorbing plate 4 is provided inside the sliding groove. A screw hole is provided at the top of the moisture-absorbing plate 4, and a bolt 12 is threadedly connected to the moisture-absorbing plate 4 through the screw hole. A beam plate is provided inside the housing 1 for fastening the moisture-absorbing plate 4 to ensure a secure assembly.

[0023] Working Principle: In the specific implementation of this utility model, during equipment operation, the intake fan 7 starts working, and external air is drawn into the electric heater 2. After being heated by the staggered electric heating tubes inside the electric heater 2, the air is guided into the interior of the housing 1 by the intake fan 7. Under the heating effect, the air humidity is effectively reduced, forming a dry airflow. Before entering the housing 1, the dry airflow must first pass through the ventilation groove 6 on the side of the baffle 5. The ventilation groove 6 is filled with silicone strips with gaps to further filter the water vapor and impurities in the air, ensuring the cleanliness and dryness of the incoming air. After the treated air enters the housing 1, it is driven by the exhaust fan 8 to form an internal gas circulation, preventing moisture deposition. The assembly groove 3 inside the housing 1 is embedded with a sliding moisture-absorbing plate 4. A silicone drying plate 9 is fixed inside the moisture-absorbing plate 4 for secondary adsorption and drying of residual moisture inside the housing 1. The moisture-absorbing plate 4 is limited by the abutment block 11, and the top is provided with screw holes and is fastened to the beam plate inside the housing 1 by bolts 12 to ensure the stable operation of the moisture-absorbing plate 4. Operators can easily disassemble the moisture-absorbing plate 4 in a non-powered state using the inserted handle 10 for maintenance or replacement. The overall structure effectively addresses the risk of moisture corrosion to electrical components inside the CNC electrical box in high-humidity environments through the synergistic effect of air intake heating, filtration, and adsorption, thereby improving operational stability and service life.

[0024] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A protective device for the electrical control box of a CNC machine tool, comprising a box body (1), wherein a pair of hinged fan doors are provided on one side of the box body (1), and a CNC panel is provided inside the box body (1), characterized in that: A pair of ventilation fans are provided on both sides of the box (1), an electric heater (2) is provided on one side of the box (1), and a pair of assembly slots (3) are fixedly connected inside the box (1). A sliding groove is provided on the inner side of the assembly slot (3), and a moisture-absorbing plate (4) is slidably arranged in the sliding groove.

2. The CNC machine tool electrical box protection device according to claim 1, characterized in that: The box body (1) is provided with rectangular frame structure guard compartments (5) on both sides, and a ventilation groove (6) is provided through one side of the guard compartment (5), and the ventilation groove (6) is filled with silicone strips with gaps.

3. The CNC machine tool electrical box protection device according to claim 1, characterized in that: The two ventilation fans include an intake fan (7) and an exhaust fan (8). The electric heater is located outside the intake fan (7) and has multiple staggered electric heating tubes at the output end. The electric heating tubes are located inside one side of the intake fan (7).

4. The CNC machine tool electrical box protection device according to claim 1, characterized in that: The moisture-absorbing plate (4) includes an assembly plate that fits into the interior of the box (1), and a silica gel drying plate (9) is fixedly disposed on the inner side of the assembly plate.

5. A protective device for the electrical control box of a CNC machine tool according to claim 4, characterized in that: The moisture-absorbing plate (4) is provided with an insertion handle (10) on the outside, the sliding groove extends outward to the hinged door, and the sliding groove is provided with an abutment block (11) for limiting the position of the moisture-absorbing plate (4).

6. A protective device for the electrical control box of a CNC machine tool according to claim 4, characterized in that: The top of the moisture-absorbing plate (4) is provided with a screw hole, and the moisture-absorbing plate (4) is connected to a bolt (12) through the screw hole. The box body (1) is provided with a beam plate for fastening the moisture-absorbing plate (4).