Arc extinguishing nozzle double-face pressing press machine

Abstract

The invention relates to the field of powder manufacturing and forming equipment, in particular to an arc extinguishing nozzle double-face pressing press machine. The arc extinguishing nozzle double-face pressing press machine comprises a control panel and a machine frame, a working table top is arranged on the machine frame, an upper pressing head is arranged above the working table top, a lower pressing head is arranged below the working table top, and a servo motor driving system comprising a servo motor and a reduction gearbox and a hydraulic servo system comprising motor control are arranged on the machine frame. The output end of the servo motor driving system is connected with a driving lead screw, the driving lead screw is provided with a movable cross beam capable of moving up and down along the driving lead screw, the upper pressing head is installed on the movable cross beam, a pressure sensor is installed between the movable cross beam and the upper pressing head, and the lower pressing head is connected to the output end of the hydraulic servo system. According to the arc extinguishing nozzle double-face pressing press machine, the pressure and other parameters during pressing can be accurately controlled, the mechanical strength of a product is effectively improved, the product performance is improved, and the safety and reliability of the product in the operation process are improved.

Description

Technical Field

[0001] The invention relates to the field of equipment for manufacturing and molding powders, and in particular to a double-sided pressing press for an arc-extinguishing nozzle. Background Art

[0002] The load breaking process of the arc extinguishing chamber of a high-voltage circuit breaker is an extremely complex physical process. The arc extinguishing nozzle is a core device of the arc extinguishing chamber of the circuit breaker, and the performance of the arc extinguishing nozzle has a great influence on the breaking performance of the circuit breaker. Therefore, the arc extinguishing nozzle used in the arc extinguishing chamber of the circuit breaker needs to meet certain process requirements during production.

[0003] At present, the commonly used arc-extinguishing nozzle forming device usually adopts a single-sided pressing method, but due to the lag in the transmission of powder force, single-sided pressing takes a long time and the performance difference at both ends of the formed product is large and the density is uneven, which will affect the product quality and thus affect the product performance. The Chinese utility model patent with the authorization announcement number CN215921087U disclosed a nozzle bidirectional pressing mold on March 1, 2022. The mold includes an upper pressing rod, a pressing guide rod, a mold cylinder, an upper pressing block, a lower pressing block and a lower pressing rod. When performing pressing and forming, the mold can be used to press through a bidirectional pressing press to achieve double-sided pressing of the arc-extinguishing nozzle, which solves the problem of large performance differences at both ends of the product during single-sided pressing.

[0004] However, the pressing and forming devices of the commonly used bidirectional pressing presses are usually controlled by a hydraulic system. For example, the Chinese invention patent with authorization announcement number CN114101670B disclosed a double-sided stamping press on November 18, 2022. The press includes a forming device and a driving device. The driving device of the press is a hydraulic driving device. The forming devices at the upper and lower ends of the press are driven by a hydraulic system. Since the arc-extinguishing nozzle requires very precise data such as pressure during pressing and forming, the hydraulic system cannot control parameters such as pressure during pressing very accurately, and cannot meet the process requirements of the arc-extinguishing nozzle. Summary of the invention

[0005] The purpose of the present invention is to provide a double-sided pressing press for an arc-extinguishing nozzle, so as to solve the problem that the existing double-sided pressing press cannot control the parameters such as the pressure during pressing particularly accurately and cannot meet the process requirements of the arc-extinguishing nozzle.

[0006] The arc extinguishing nozzle double-sided pressing press of the present invention adopts the following technical solutions:

[0007] The arc-extinguishing nozzle double-sided pressing press comprises a control panel and a frame, wherein a work surface is arranged in the frame, an upper pressure head is arranged above the work surface, and a lower pressure head is arranged below the work surface, and a servo motor drive system including a servo motor and a reduction box and a hydraulic servo system including motor control are arranged on the frame, the output end of the servo motor drive system is connected to a driving screw, and the driving screw is provided with a movable beam which can move up and down along the driving screw, the upper pressure head is installed on the movable beam, and a pressure sensor is installed between the movable beam and the upper pressure head, the pressure sensor and the servo motor drive system form a closed-loop control system, and the lower pressure head is connected to the output end of the hydraulic servo system.

[0008] Furthermore, the servo motor drive system is located at the lower part of the frame.

[0009] Furthermore, the hydraulic servo system is located at the lower part of the frame.

[0010] Furthermore, the servo motor drive system and the hydraulic servo system are located on both sides below the workbench.

[0011] Furthermore, there are two driving screw rods which are parallel to each other.

[0012] Furthermore, the reduction box has an output end corresponding to each driving screw rod.

[0013] Furthermore, a guardrail is provided on the frame to protect the staff.

[0014] Furthermore, a grating safety guard is provided on the guardrail.

[0015] Furthermore, steps are provided on the frame to facilitate workers to operate the press.

[0016] Beneficial effects: The arc-extinguishing nozzle double-sided pressing press of the present invention is an improved invention. The arc-extinguishing nozzle double-sided pressing press of the present invention controls the upper pressure head and the lower pressure head on the press respectively through the servo motor drive system and the hydraulic servo system to press and form the product. The reducer of the servo motor drive system can increase the torque output, improve the stability of the torque, and make the pressing process more stable. When pressing, the parameters during pressing are controlled by the control panel. The servo motor drives the driving screw to rotate, thereby driving the moving beam to move downward. The upper pressure head on the moving beam is pressed first. When the pressing is about to be completed, the lower pressure head is pressed under the action of the hydraulic servo system to achieve two-way pressing of the product. The pressure sensor on the moving beam forms a closed-loop control with the servo motor drive system, which can monitor the change of pressure during pressing in real time and control the pressure. The servo motor drive system and the hydraulic servo system in the frame are both controlled by motors, and the parameters during pressing can be controlled more accurately. The arc-extinguishing nozzle double-sided pressing press of the present invention can accurately control the parameters such as pressure when pressing and forming the product, effectively improve the mechanical strength of the product, improve the product performance, and improve the safety and reliability of the product during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an embodiment of the arc extinguishing nozzle double-sided pressing press of the present invention;

[0018] Figure 2 The arc extinguishing nozzle double-sided pressing press of the present invention Figure 1 A side structural diagram of an embodiment.

[0019] In the figure: 1. Moving beam; 2. Mold; 3. Control panel; 4. Reducer; 5. Servo motor; 6. Pressure sensor; 7. Upper pressure head; 8. Driving screw; 9. Hydraulic drive device; 10. Hydraulic cylinder; 11. Work surface; 12. Guardrail; 13. Lower pressure head; 14. Steps. DETAILED DESCRIPTION

[0020] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0021] In response to the problem that most existing bidirectional pressing presses are controlled by hydraulic systems for pressing, and parameters such as pressure cannot be accurately controlled to meet the process requirements of arc extinguishing nozzles, the present invention proposes a double-sided pressing press that can accurately control parameters such as pressure during the pressing process and meet the process requirements of arc extinguishing nozzles. A servo motor is used to control the forming device on the press, and a pressure sensor is used to achieve accurate control of parameters such as pressure during the pressing process.

[0022] In a basic embodiment, Figure 1As shown, a control panel 3 is provided on the press, a servo motor 5, a hydraulic drive device 9 and a hydraulic cylinder 10 are installed at the bottom of the press, a lower pressure head 13 is provided above the hydraulic cylinder 10, a reduction box 4 is connected to the output end of the servo motor 5, a driving screw 8 is connected to the output end of the reduction box 4, a moving beam 1 is installed on the driving screw 8, the moving beam 1 is installed on the press only through the driving screw 8, the moving beam 1 can move up and down under the action of the driving screw 8, an upper pressure head 7 is installed on the lower end surface of the moving beam 1, a work table 11 is provided on the press, and a mold 2 is installed on the work table 11. When the product is pressed and formed, the pressing parameters (pressure, pressurization speed, pressure relief speed, displacement speed, holding time, etc.) are set through the control panel 3, and the servo motor 5 increases the torque output through the reduction box 4, driving the driving screw 8 to rotate. The left and right ends of the moving beam 1 are equipped with two rolling screw nuts that move downward with the driving screw 8. The upper pressure head 7 installed on the lower end surface of the moving beam 1 presses the product. When the product is about to be pressed and formed, the hydraulic drive device 9 and the hydraulic cylinder 10 drive the lower pressure head 13 to lift and further press the product. Under the joint action of the upper pressure head 7 and the lower pressure head 13, the pressing and forming of the product is completed. A pressure sensor 6 is installed on the moving beam 1. The pressure sensor 6 and the servo motor drive system form a closed-loop control system. The pressure sensor 6 can transmit the pressure signal during the pressing process to the control system, monitor the pressure in real time, and control the pressure, so as to more accurately control the pressure and other data during the pressing process.

[0023] In a preferred embodiment, there are two drive screws 8 and they are installed in parallel in the press. The reduction box 4 has an output end corresponding to each drive screw 8. The two drive screws 8 can drive the moving beam 1 to move up and down while ensuring the stability of the movement of the moving beam 1, ensuring that the moving beam 1 will not tilt during the pressing process, thereby ensuring the stability of the pressing process.

[0024] In other embodiments, there may be multiple driving screw rods 8 installed in parallel, which can further improve the stability of the moving beam 1 during the pressing process and ensure that the moving beam 1 is always in a horizontal state.

[0025] In a preferred embodiment, Figure 2 As shown, a guardrail 12 is installed on the frame of the arc extinguishing nozzle double-sided pressing press. The guardrail 12 can provide safety protection for workers during the pressing process. A grating safety protector is also provided on the guardrail 12 to eliminate safety hazards caused by operational errors during the pressing process.

[0026] In other embodiments, a protective cover may be used to protect workers on the arc extinguishing nozzle double-sided pressing press.

[0027] In a preferred embodiment, Figure 2 As shown, steps are provided on the arc extinguishing nozzle double-sided pressing press, and workers can stand on the steps to conveniently operate the control panel 3.

[0028] In other embodiments, a work surface may be placed in front of the press to facilitate the operation of the press by the staff.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims

1. A double-sided pressing press for an arc extinguishing nozzle, comprising a control panel and a frame, wherein the frame is provided with a work surface, an upper pressing head is provided above the work surface, and a lower pressing head is provided below the work surface, characterized in that: The frame is provided with a servo motor drive system including a servo motor and a reduction box and a hydraulic servo system including motor control, the output end of the servo motor drive system is connected to a driving screw, the driving screw is provided with a moving beam that can move up and down along the driving screw, the upper pressure head is installed on the moving beam, a pressure sensor is installed between the moving beam and the upper pressure head, the pressure sensor and the servo motor drive system form a closed-loop control system, and the lower pressure head is connected to the output end of the hydraulic servo system.

2. The arc extinguishing nozzle double-sided pressing press according to claim 1, characterized in that: The servo motor drive system is located at the lower part of the frame.

3. The arc extinguishing nozzle double-sided pressing press according to claim 2, characterized in that: The hydraulic servo system is located at the lower part of the frame.

4. The arc extinguishing nozzle double-sided pressing press according to claim 3, characterized in that: The servo motor drive system and the hydraulic servo system are located on both sides below the workbench.

5. The arc extinguishing nozzle double-sided pressing press according to claim 1, characterized in that: There are two driving screw rods which are parallel to each other.

6. The arc extinguishing nozzle double-sided pressing press according to claim 5, characterized in that: The reduction box has an output end corresponding to each driving screw rod.

7. The arc extinguishing nozzle double-sided pressing press according to any one of claims 1 to 6, characterized in that: The frame is provided with a guardrail to protect the staff.

8. The arc extinguishing nozzle double-sided pressing press according to claim 7, characterized in that: A grating safety protector is arranged on the guardrail.

9. The arc extinguishing nozzle double-sided pressing press according to claim 7, characterized in that: The frame is provided with steps to facilitate the staff to operate the press.

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