Bending machine hydraulic system controlled by single-shaft, double-pump and double-servo pump

Abstract

The utility model discloses a single-shaft double-pump double-servo-pump control bending machine hydraulic system, which comprises a control system, a first servo pump and a second servo pump, the control system is electrically connected with the first servo pump, and the first servo pump is used for controlling the action of a sliding block; and the second servo pump is used for pressurizing the sliding block to increase the bending force of the sliding block so as to complete the bending action on the plate. According to the utility model, the first servo pump and the second servo pump are arranged to respectively control the action of the sliding block and pressurize the sliding block, so that the movement direction and the bending force of the sliding block can be respectively controlled, the bending action of a plate can be completed, the bending device can be matched with a relatively low-grade control system, and the cost can be reduced.

Description

Technical Field

[0001] The utility model relates to a single-axis double-pump double-servo pump-controlled bending machine hydraulic system. Background Art

[0002] The existing hydraulic system of the bending machine usually adopts a single pump and a single motor to drive the slider through variable torque to complete the bending action of the plate. In order to meet the production needs, the model and configuration of the control system required to be matched are higher, which leads to higher costs. Utility Model Content

[0003] According to one aspect of the utility model, a single-axis dual-pump dual-servo pump-controlled bending machine hydraulic system is provided, comprising:

[0004] A control system and a first servo pump, wherein the control system is electrically connected to the first servo pump, and the first servo pump is used to control the movement of the slider;

[0005] The second servo pump is used to pressurize the slider to increase the bending force of the slider to complete the bending action of the plate.

[0006] The utility model single-axis dual-pump dual-servo pump-controlled bending machine hydraulic system, by setting a first servo pump and a second servo pump, respectively controls the movement of the slider and pressurizes the slider, and then can respectively control the movement direction of the slider and the bending force, so as to complete the bending action of the plate. Compared with the prior art, since the control system only needs to control the movement of the slider through the first servo pump, it can match a relatively low-level control system, which is conducive to reducing costs.

[0007] In some embodiments, the output power of the second servo pump is greater than the output power of the first servo pump.

[0008] In some embodiments, the first servo pump includes a first motor and a first hydraulic pump, and the first motor is used to control the action of the first hydraulic pump.

[0009] In some embodiments, the second servo pump includes a second motor and a second hydraulic pump, and the second motor is used to control the action of the second hydraulic pump.

[0010] In some embodiments, a filter assembly is disposed between the control system and the first servo pump.

[0011] In some embodiments, a safety valve is further included, and the safety valve is connected to the second servo pump and the oil tank respectively.

[0012] In some embodiments, the safety valve is a relief valve.

[0013] In some embodiments, a filling valve is further included, and the control system is used to control the opening and closing of the filling valve, and the filling valve is connected to the second servo pump and the oil tank respectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the hydraulic system of the single-axis dual-pump dual-servo pump-controlled bending machine in the utility model.

[0015] In the figure: 10, control system; 11, first motor; 12, first hydraulic pump; 13, second motor; 14, second hydraulic pump; 15, filter assembly; 16, safety valve; 17, filling valve; 18, slider. DETAILED DESCRIPTION

[0016] The utility model is further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] It should be noted that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0018] In the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0020] In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0021] Please refer to Figure 1 The present embodiment provides a single-axis dual-pump dual-servo pump-controlled bending machine hydraulic system, including a control system 10, a first servo pump and a second servo pump. The control system 10 is electrically connected to the first servo pump. The first servo pump is used to control the movement of the slider 18; the second servo pump is used to pressurize the slider 18 to increase the bending force of the slider 18 to complete the bending action of the plate. By setting the first servo pump and the second servo pump, the movement of the slider 18 and the pressurization of the slider 18 are controlled respectively, and then the movement direction and the bending force of the slider 18 can be controlled respectively, so that the bending action of the plate can be completed. Compared with the prior art, only in the working stage, that is, when pressing the plate, the hydraulic system needs to provide bending force to the slider 18. In other actions, the hydraulic system only needs to provide force to support the weight of the slider 18 itself. In the present embodiment, the force in the plate bending process is decomposed. Since the control system 10 only needs to control the movement of the slider 18 through the first servo pump, it can match a relatively low-level control system 10, which is conducive to reducing costs.

[0022] Specifically, the output power of the second servo pump is greater than the output power of the first servo pump, thereby meeting the requirements for the size of the power source during the sheet bending process.

[0023] Please refer to Figure 1 The first servo pump includes a first motor 11 and a first hydraulic pump 12. The first motor 11 is used to control the action of the first hydraulic pump 12, thereby enabling the slider 18 to control the movement direction of the slider 18 relative to the plate.

[0024] Please refer to Figure 1The second servo pump includes a second motor 13 and a second hydraulic pump 14. The second motor 13 is used to control the action of the second hydraulic pump 14. In this way, the slider 18 can control the bending force applied by the slider 18 to the plate.

[0025] For specific implementation, please refer to Figure 1 The first motor 11 is a small motor, the second motor 13 is a large motor, the power of the large motor is greater than the power of the small motor, the power of the second hydraulic pump 14 is greater than the power of the first hydraulic pump 12, and in the working stage, the small motor and the large motor work at the same time, the small motor controls the movement direction of the slider 18, and the large motor provides the bending force. Compared with the prior art that uses a single pump and a single motor to control the bending machine, since the slider 18 can be effectively controlled without configuring a high-level control system 10, the cost can be reduced.

[0026] Please refer to Figure 1 A filter assembly 15 is provided between the control system 10 and the first servo pump. Thus, the first hydraulic pump 12 can filter the oil when it is discharged, while the return oil bypass is not filtered, so that the impurities in the oil in the oil circuit are effectively filtered, and the filter assembly 15 is matched with the small motor, and the filter assembly 15 can adopt a relatively low-level configuration, thereby further reducing the cost.

[0027] Please refer to Figure 1 The hydraulic system further includes a safety valve 16, which is connected to the second servo pump and the oil tank respectively, so that the oil pressure in the oil circuit can be effectively controlled to ensure that the bending machine operates safely within a safe range and avoid motor burnout, oil temperature rise, etc. In specific implementation, in order to match the large motor, the safety valve 16 is preferably a large-sized safety valve 16.

[0028] Please refer to Figure 1 The safety valve 16 is a relief valve, which makes the structure of the hydraulic system simple and the cost low.

[0029] Please refer to Figure 1 The hydraulic system also includes a filling valve 17. The control system 10 is used to control the opening and closing of the filling valve 17. The filling valve 17 is connected to the second servo pump and the oil tank respectively. The filling valve 17 is preferably a normally open filling valve. In this way, the second hydraulic pump 14 can be filled with liquid so that the slider 18 can bend the plate.

[0030] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. Single-axis dual-pump dual-servo pump-controlled bending machine hydraulic system, characterized in that: include: A control system and a first servo pump, wherein the control system is electrically connected to the first servo pump, and the first servo pump is used to control the movement of the slider; The second servo pump is used to pressurize the slider to increase the bending force of the slider to complete the bending action of the plate.

2. The single-axis dual-pump dual-servo pump-controlled bending machine hydraulic system according to claim 1 is characterized in that: The output power of the second servo pump is greater than the output power of the first servo pump.

3. The single-axis dual-pump dual-servo pump-controlled bending machine hydraulic system according to claim 1 or 2, characterized in that: The first servo pump includes a first motor and a first hydraulic pump, and the first motor is used to control the action of the first hydraulic pump.

4. The single-axis dual-pump dual-servo pump-controlled bending machine hydraulic system according to claim 1 or 2, characterized in that: The second servo pump includes a second motor and a second hydraulic pump, and the second motor is used to control the action of the second hydraulic pump.

5. The single-axis dual-pump dual-servo pump-controlled bending machine hydraulic system according to claim 1 is characterized in that: A filter assembly is arranged between the control system and the first servo pump.

6. The single-axis dual-pump dual-servo pump-controlled bending machine hydraulic system according to claim 1 is characterized in that: It also includes a safety valve, which is connected to the second servo pump and the oil tank respectively.

7. The single-axis dual-pump dual-servo pump-controlled bending machine hydraulic system according to claim 6 is characterized in that: The safety valve is a relief valve.

8. The single-axis dual-pump dual-servo pump-controlled bending machine hydraulic system according to claim 1 is characterized in that: It also includes a filling valve, the control system is used to control the opening and closing of the filling valve, and the filling valve is connected to the second servo pump and the oil tank respectively.

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