Quick replacement system for hydraulic machine die

Abstract

The utility model provides a hydraulic machine die rapid replacement system, which relates to the field of hydraulic machine die replacement, and adopts the technical scheme that the hydraulic machine die rapid replacement system comprises a die bottom plate, an oil tank, an oil supply component, a reversing valve and a hydraulic oil cylinder, the hydraulic oil cylinder is communicated with the oil supply assembly through a pressure regulating valve, the pressure regulating valve is electrically connected with the control module, a pressure sensor is arranged on the mold bottom plate, the pressure sensor is used for detecting the weight of the mold, and the pressure sensor is electrically connected with the control module. The translation device can replace a motor speed reducer structure, the load capacity of the translation device is improved, the driving force can be adjusted according to the weight of a mold, and the application range is widened.

Description

Technical Field

[0001] The utility model relates to the field of die replacement of hydraulic presses, in particular to a rapid die replacement system for hydraulic presses. Background Art

[0002] In the existing hydraulic presses, the moving workbench is placed above the workbench. The dies on the workbench need to be replaced frequently. Since the dies are heavy, lifting equipment is required for replacement. However, the space between the workbench and the moving workbench is small, making it very inconvenient to use the lifting equipment. Therefore, manual die replacement is often needed, resulting in low efficiency and high labor costs.

[0003] In the prior art, the Chinese utility model patent with the authorization announcement number CN202702670U discloses a hydraulic press convenient for die replacement, which mainly includes a workbench and a moving workbench. The moving workbench is placed above the workbench. A horizontally arranged guide rail is provided on the ground below the workbench. Walking wheels for walking on the guide rail are provided at the lower end of the workbench. A hook is provided in the middle of the front end of the workbench. A horizontal groove is provided in front of the hook. A horizontally arranged chain conveyor is provided in the groove. A buckle groove is provided between the chains of the chain conveyor. The hook is buckled in the buckle groove. Through the rotation of the chain conveyor, the hook on the workbench is driven forward together, enabling the workbench to move to a place with a larger space where it is convenient for the lifting equipment to hoist the die, so that the die can be replaced conveniently and quickly, improving the work efficiency and reducing the cost of die replacement.

[0004] Adopting the above technical solution, the chain conveyor drives the chain through a motor reducer mechanism. This method has low transmission efficiency, and the transmission chain and the driving motor have large working loads, are prone to damage or breakage, resulting in a high failure rate of the equipment, reducing the working efficiency of the equipment, and being unable to adjust the driving force according to the load, so the working ability is limited and it is not flexible to use. Summary of the Utility Model

[0005] In order to solve the technical problems of high failure rate and low transmission efficiency in die replacement of hydraulic presses driven by motors in the above-mentioned prior art, the utility model provides a rapid die replacement system for hydraulic presses, which can replace the motor reducer structure, improve the load capacity of the translation device, and can also adjust the driving force according to the weight of the die, enhancing the scope of application.

[0006] The technical solution adopted by the present utility model to solve the above technical problems is as follows: A rapid die change system for a hydraulic press, including a die bottom plate, the die bottom plate is movably arranged on a workbench, and further includes an oil tank, an oil supply assembly, a reversing valve and a hydraulic cylinder that are connected in sequence. The hydraulic cylinder is connected to the die bottom plate. The hydraulic cylinder is communicated with the oil supply assembly through a pressure regulating valve. The pressure regulating valve is electrically connected to a control module. A pressure sensor is arranged on the die bottom plate. The pressure sensor is used to detect the weight of the die. The pressure sensor is electrically connected to the control module.

[0007] The present utility model drives the die bottom plate to reciprocate through the cooperation of a hydraulic cylinder and a reversing valve to realize die change. Compared with the existing motor reducer mechanism, it has a low failure rate, high transmission efficiency, rapid action response, stable movement, and can automatically adjust the working pressure of the hydraulic cylinder according to the die weight, improving the applicable range and ensuring applicability to dies of various weights.

[0008] Further, the oil supply assembly includes an oil supply motor and a hydraulic pump. The inlet end of the hydraulic pump is communicated with the oil tank. The oil supply motor drives the hydraulic pump to rotate. A reversing valve is arranged between the pressure regulating valve and the hydraulic cylinder. The oil supply motor is electrically connected to the control module.

[0009] Further, the reversing valve is communicated with the corresponding oil ports of the hydraulic cylinder through an oil inlet pipe and an oil return pipe. The reversing valve is electrically connected to the control module.

[0010] Further, the oil supply motor adopts a three-phase asynchronous motor.

[0011] Further, the oil tank is a closed oil tank, and a filter screen is arranged in the oil tank.

[0012] The present utility model prevents impurities from invading the hydraulic pump, reversing valve and hydraulic cylinder by arranging a filter screen, preventing the hydraulic system from being blocked by impurities.

[0013] Further, it also includes an input module and a display. Both the input module and the display are electrically connected to the control module.

[0014] The present utility model can better perform human-machine interaction by arranging an input module and a display.

[0015] Further, it also includes a displacement sensor. The displacement sensor is arranged on the die bottom plate. The displacement sensor is electrically connected to the control module.

[0016] The utility model can monitor the moving distance of the die bottom plate by setting a displacement sensor. On the one hand, it can prevent over-positioning and collisions, improving the safety and reliability of the system. On the other hand, it can cooperate with a pressure regulating valve to adjust the pressure value of the hydraulic system in real time, avoid sharp changes in speed, and ensure the smooth operation of the die bottom plate.

[0017] Furthermore, it also includes a limit seat and a limit plate. The limit seat is arranged on the die bottom plate, and the limit plate is arranged on the workbench.

[0018] The utility model can achieve hard limit on the movement of the die bottom plate through the limit seat and the limit plate, further improving the safety of the system.

[0019] From the above technical solutions, it can be seen that the utility model has the following advantages:

[0020] The utility model provides a rapid die change system for a hydraulic press. The die bottom plate is driven to reciprocate through the cooperation of a hydraulic cylinder and a reversing valve to achieve die change. Compared with the existing motor reducer mechanism, it has a low failure rate, high transmission efficiency, rapid action response, stable movement, and can automatically adjust the working pressure of the hydraulic cylinder according to the die weight, improving the applicable range and ensuring applicability to dies of various weights; by setting a filter screen, it can prevent impurities from entering the hydraulic pump, reversing valve, and hydraulic cylinder, preventing the hydraulic system from being blocked by impurities; by setting an input module and a display, better human-machine interaction can be achieved; by setting a displacement sensor, the moving distance of the die bottom plate can be monitored. On the one hand, it can prevent over-positioning and collisions, improving the safety and reliability of the system. On the other hand, it can cooperate with a pressure regulating valve to adjust the pressure value of the hydraulic system in real time, avoid sharp changes in speed, and ensure the smooth operation of the die bottom plate; hard limit on the movement of the die bottom plate can be achieved through the limit seat and the limit plate, further improving the safety of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the utility model, the drawings required for description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 It is a schematic structural diagram of the specific embodiment of the utility model.

[0023] In the figure, 1, fuel tank; 2, oil supply motor; 3, hydraulic pump; 4, reversing valve; 5, inlet pipe; 6, hydraulic cylinder; 7, electric switch; 8, control power supply; 9, pressure regulating valve; 10, return pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] In order to make the objectives, features, and advantages of the present utility model more obvious and understandable, the technical solutions in the present utility model will be clearly and completely described below with reference to the accompanying drawings in the specific embodiments. Obviously, the embodiments described below are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments in this patent, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this patent.

[0025] As Figure 1 shown, this specific embodiment provides a rapid die change system for a hydraulic press, including a die base plate, a control module, a pressure sensor, an oil tank 1, an oil supply assembly, a directional control valve 4, and a hydraulic cylinder 6; the die base plate is movably arranged on the workbench, the oil tank 1, the oil supply assembly, the directional control valve 4, and the hydraulic cylinder 6 are connected in sequence, and the hydraulic cylinder 6 is connected to the die base plate; the hydraulic cylinder 6 is connected to the oil supply assembly through a pressure regulating valve 9, the pressure regulating valve 9 is electrically connected to the control module, a pressure sensor is arranged on the die base plate, the pressure sensor is used to detect the die weight, and the pressure sensor is electrically connected to the control module.

[0026] This specific embodiment drives the die base plate to reciprocate through the cooperation of the hydraulic cylinder 6 and the directional control valve 4 to realize die change. Compared with the existing motor reducer mechanism, using the directional control valve 4 to control the extension and retraction of the cylinder, the control method is simple, the failure rate is low, the transmission efficiency is high, the action response is rapid, the movement is stable, and the reliability of the overall system is improved; at the same time, it can automatically adjust the working pressure of the hydraulic cylinder 6 according to the die weight, expand the applicable range, and ensure applicability to dies of various weights.

[0027] As Figure 1 shown, in this specific embodiment, the oil supply assembly includes an oil supply motor 2 and a hydraulic pump 3. The inlet end of the hydraulic pump 3 is connected to the oil tank 1, the outlet end of the hydraulic pump 3 is connected to the pressure regulating valve 9, the oil supply motor 2 drives the hydraulic pump 3 to rotate, a directional control valve 4 is arranged between the pressure regulating valve 9 and the hydraulic cylinder 6, the oil supply motor 2 is a three-phase asynchronous motor, and the oil supply motor 2 is electrically connected to the control module.

[0028] As Figure 1 shown, in order to ensure sensitive response, in this specific embodiment, the directional control valve 4 is an electromagnetic directional control valve. The directional control valve 4 is connected to the corresponding oil ports of the hydraulic cylinder 6 through an oil inlet pipe 5 and an oil return pipe 10, and the directional control valve 4 is electrically connected to the control module. Specifically, the directional control valve 4 includes an electric switch 7, the electric switch 7 is electrically connected to a control power supply 8, and the electric switch 7 is electrically connected to the control module.

[0029] As Figure 1As shown in the figure, to prevent sundries from entering the hydraulic system, the fuel tank 1 is a sealed fuel tank 1, and a filter screen is provided inside the fuel tank 1; by setting the filter screen, impurities are prevented from infiltrating into the hydraulic pump 3, the directional control valve 4 and the hydraulic cylinder 6, preventing the impurities from causing blockage of the hydraulic system.

[0030] As Figure 1 shown in the figure, in order to improve the automation level of the system, in this specific embodiment, an input module and a display are further included, and both the input module and the display are electrically connected to the control module; operators can send instructions to the control unit through the input module to manually adjust the pressure regulating valve 9 to adjust the working pressure of the hydraulic cylinder 6, forming a double insurance with the automatic regulation of the system and improving the working reliability of the system.

[0031] In this specific embodiment, a displacement sensor is further included. The displacement sensor is arranged on the mold bottom plate, and the displacement sensor is electrically connected to the control module; the displacement sensor adopts a grating scale. The grating scale is arranged on the workbench, and the grating reading head is arranged on the mold bottom plate. The grating reading head is electrically connected to the control unit to accurately know the position of the mold bottom plate; with such a setting, on the one hand, it prevents the mold bottom plate from moving out of position and colliding, improving the safety and reliability of the system. On the other hand, it can also cooperate with the pressure regulating valve 9 to adjust the pressure value of the hydraulic system in real time, avoiding sharp changes in speed and ensuring the smooth operation of the mold bottom plate; preferably, in order to improve the reliability of the limit, this specific embodiment further includes a limit seat and a limit plate. The limit seat is arranged on the mold bottom plate, and the limit plate is arranged at the extreme position where the mold bottom plate moves on the workbench.

[0032] It can be seen from the above specific embodiments that the present utility model has the following beneficial effects:

[0033] 1. The hydraulic cylinder 6 and the directional control valve 4 cooperate to drive the mold bottom plate to reciprocate, realizing mold replacement. Compared with the existing motor reducer mechanism, it has a low failure rate, high transmission efficiency, rapid action response, stable movement, and can automatically adjust the working pressure of the hydraulic cylinder according to the weight of the mold, improving the applicable range and ensuring applicability to molds of various weights;

[0034] 2. By setting a filter screen, impurities are prevented from infiltrating into the hydraulic pump, the directional control valve and the hydraulic cylinder, preventing the impurities from causing blockage of the hydraulic system;

[0035] 3. By setting the pressure regulating valve 9, the hydraulic pressure can be adjusted according to the weight of the mold, ensuring that the hydraulic cylinder 6 meets the load requirements;

[0036] 4. By setting a filter screen, impurities are prevented from infiltrating into the hydraulic pump 3, the directional control valve 4 and the hydraulic cylinder 6, preventing the impurities from causing blockage of the hydraulic system;

[0037] 5. By setting up an input module and a display, better human-machine interaction can be achieved;

[0038] 6. By setting up a displacement sensor, the moving distance of the mold bottom plate can be monitored. On the one hand, it can prevent over-positioning and collisions, improving the safety and reliability of the system. On the other hand, it can also cooperate with the pressure regulating valve 9 to adjust the pressure value of the hydraulic system in real time, avoid sudden changes in speed, and ensure the smooth operation of the mold bottom plate;

[0039] 6. By means of the limit seat and the limit plate, hard limits on the movement of the mold bottom plate can be achieved, further enhancing the safety of the system.

[0040] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hydraulic press mold quick change system, comprising a mold base plate, wherein the mold base plate is movably arranged on a workbench, characterized in that: The invention also comprises an oil tank (1), an oil supply assembly, a reversing valve (4) and a hydraulic cylinder (6) which are connected in sequence, wherein the hydraulic cylinder (6) is connected to the mold base plate, the hydraulic cylinder (6) is connected to the oil supply assembly via a pressure regulating valve (9), the pressure regulating valve (9) is electrically connected to a control module, a pressure sensor is arranged on the mold base plate, the pressure sensor is used to detect the mold weight, and the pressure sensor is electrically connected to the control module.

2. The hydraulic press mold quick change system according to claim 1, characterized in that: The oil supply assembly comprises an oil supply motor (2) and a hydraulic pump (3); the oil inlet end of the hydraulic pump (3) is connected to the oil tank (1); the oil supply motor (2) drives the hydraulic pump (3) to rotate; a reversing valve (4) is provided between the pressure regulating valve (9) and the hydraulic cylinder (6); and the oil supply motor (2) is electrically connected to the control module.

3. The hydraulic press mold quick change system according to claim 2, characterized in that: The reversing valve (4) is connected to the corresponding oil port of the hydraulic cylinder (6) through an oil inlet pipe (5) and an oil return pipe (10), and the reversing valve (4) is electrically connected to the control module.

4. The hydraulic press mold rapid replacement system according to claim 3, characterized in that: The oil supply motor (2) is a three-phase asynchronous motor.

5. The hydraulic press mold quick change system according to claim 1, characterized in that: The oil tank (1) is a closed oil tank (1), and a filter screen is arranged inside the oil tank (1).

6. The hydraulic press mold quick change system according to claim 1, characterized in that: It also includes an input module and a display, and both the input module and the display are electrically connected to the control module.

7. The hydraulic press mold quick change system according to any one of claims 1 to 6, characterized in that: It also includes a displacement sensor, which is arranged on the mold bottom plate and is electrically connected to the control module.

8. The hydraulic press mold quick change system according to claim 7, characterized in that: It also includes a limiting seat and a limiting plate, wherein the limiting seat is arranged on the mold bottom plate, and the limiting plate is arranged on the workbench.

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