An automatic molding ram control system

Abstract

The utility model discloses an automatic formula forming pressure head control system, including pressure head subassembly, hydraulic drive unit, PLC control unit and touch screen, pressure head subassembly, every pressure head subassembly connects independent hydraulic oil cylinder, is equipped with pressure sensor and proximity switch on the oil cylinder, PLC control unit is used for receiving the real -time pressure signal of pressure sensor, and compares with the preset pressure value, closes the oil supply valve of corresponding oil cylinder when reaching the set value, touch screen man -machine interface is used for manual input each pressure head's preset pressure value and monitoring pressure head working condition, hydraulic valve group is controlled to the PLC control unit, is used for adjusting the feeding and retraction of each oil cylinder. The utility model discloses through the automation pressure closed loop control, ensures every pressure head accurate pressure according to the set value, and the product quality consistency is promoted.

Description

Technical Field

[0001] This utility model relates to an automatic forming pressure head control system, belonging to the field of casting machinery and equipment manufacturing. Background Technology

[0002] In the casting production process, the sand mold serves as the cavity for the casting, and its quality has a significant impact on the forming and final properties of the casting. Sand mold making typically involves mixing raw sand, binder, and other auxiliary materials to form a sand mold capable of supporting the casting process. One of the key steps in sand mold making is filling the sand box with loose molding sand and compacting it using a compaction mechanism to form a cavity with a specific shape.

[0003] In existing technologies, multi-head forming equipment often suffers from uneven pressure distribution among the pressure heads, leading to localized overpressure or underpressure in products, especially for complex curved workpieces. Traditional manual pressure adjustment relies on experience, resulting in low efficiency and a high risk of error. This invention utilizes automated closed-loop pressure control to ensure that each pressure head applies precise pressure according to the set value, thereby improving product quality consistency. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides an automatic forming head control system, thereby solving the problem of product deformation or damage caused by uneven pressure in traditional forming heads.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: an automatic forming head control system, including a head assembly, a hydraulic valve group, a PLC control unit, and a touch screen;

[0006] The pressure head assembly consists of an independent hydraulic cylinder, which is equipped with a pressure sensor and a proximity switch.

[0007] The PLC control unit is used to receive the real-time pressure signal from the pressure sensor and compare it with the preset pressure value. When the set value is reached, the oil supply valve of the corresponding oil cylinder is closed.

[0008] The touch screen human-machine interface is used for manual input of preset pressure values ​​for each pressure head and monitoring of the working status of the pressure head;

[0009] The hydraulic valve assembly, controlled by a PLC control unit, is used to regulate the feed and retraction of each cylinder.

[0010] Furthermore, the pressure sensor is a strain gauge type or a piezoelectric type sensor, which is installed on the piston rod or pressure head contact surface of the hydraulic cylinder.

[0011] Furthermore, the PLC control unit also has a delayed shutdown function, which maintains the valve for a short time after the pressure reaches the preset value before closing it to ensure molding stability.

[0012] Furthermore, the touchscreen displays the real-time pressure curves and fault alarm information for each pressure head.

[0013] Furthermore, the proximity switch is used to detect the retracted position of the cylinder piston rod and feeds the signal back to the PLC control unit.

[0014] The beneficial effects of this utility model are: this system avoids product damage caused by local overpressure through independent closed-loop control, reduces manual intervention, and improves production efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the system structure of this utility model. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0018] like Figure 1 The system module diagram shown illustrates an automatic forming press head control system, including a press head assembly, a hydraulic valve group, a PLC control unit, and a touch screen.

[0019] The pressure head assembly consists of an independent hydraulic cylinder, which is equipped with a pressure sensor and a proximity switch.

[0020] The PLC control unit is used to receive the real-time pressure signal from the pressure sensor and compare it with the preset pressure value. When the set value is reached, the oil supply valve of the corresponding oil cylinder is closed.

[0021] The touch screen human-machine interface is used for manual input of preset pressure values ​​for each pressure head and monitoring of the working status of the pressure head;

[0022] The hydraulic valve assembly, controlled by a PLC control unit, is used to regulate the feed and retraction of each cylinder.

[0023] In this embodiment, the pressure sensor is a strain gauge type or a piezoelectric sensor, which is installed on the piston rod or pressure head contact surface of the hydraulic cylinder.

[0024] In this embodiment, the PLC control unit also has a delayed shutdown function, which maintains the valve for a short time after the pressure reaches the preset value before closing the valve to ensure molding stability.

[0025] In this embodiment, the touch screen displays the real-time pressure curves and fault alarm information of each pressure head.

[0026] In this embodiment, the proximity switch is used to detect the retraction position of the cylinder piston rod and feed the signal back to the PLC control unit.

[0027] This system consists of a pressure head assembly, a hydraulic drive unit, a PLC control unit, and a touch screen. Each pressure head corresponds to a hydraulic cylinder, which has a built-in pressure sensor and proximity switch to provide real-time feedback of pressure and position signals.

[0028] Specific working principle: The target pressure value of each pressure head is set through the touch screen; the PLC starts the hydraulic system, and the oil cylinder pushes the pressure head to contact the workpiece; when the pressure of a certain pressure head reaches the set value, the PLC closes the corresponding oil cylinder valve, and the pressure head stops feeding; the remaining pressure heads continue to work until all reach the target, and the system automatically completes the forming; the proximity switch detects the oil cylinder retraction to ensure that the pressure head is reset.

[0029] This device uses independent closed-loop control to avoid product damage caused by local overpressure; it has a high degree of automation, reducing manual intervention and improving production efficiency; and it is traceable, with a touch screen recording pressure data for easy process optimization and quality analysis.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic forming head control system, characterized in that, Includes pressure head assembly, hydraulic valve group, PLC control unit and touch screen; The pressure head assembly consists of an independent hydraulic cylinder, which is equipped with a pressure sensor and a proximity switch. The PLC control unit is used to receive the real-time pressure signal from the pressure sensor and compare it with the preset pressure value. When the set value is reached, the oil supply valve of the corresponding oil cylinder is closed. The touch screen human-machine interface is used for manual input of preset pressure values ​​for each pressure head and monitoring of the working status of the pressure head; The hydraulic valve assembly, controlled by a PLC control unit, is used to regulate the feed and retraction of each cylinder.

2. The automatic forming head control system according to claim 1, characterized in that, The pressure sensor is a strain gauge or piezoelectric sensor, installed on the piston rod or pressure head contact surface of the hydraulic cylinder.

3. The automatic forming head control system according to claim 1, characterized in that, The PLC control unit also has a delayed shutdown function, which maintains the valve for a short time after the pressure reaches the preset value before closing it to ensure molding stability.

4. The automatic forming head control system according to claim 1, characterized in that, The touchscreen displays the real-time pressure curves and fault alarm information for each pressure head.

5. The automatic forming head control system according to claim 1, characterized in that, The proximity switch is used to detect the retraction position of the cylinder piston rod and feeds the signal back to the PLC control unit.

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