Servo motor driven pressure compensation device for electro-hydraulic servo numerical control bending machine

Abstract

This utility model discloses a servo motor driven pressure compensation device for an electro-hydraulic servo CNC bending machine, belonging to the technical field of bending machines. The servo motor driven pressure compensation device for the electro-hydraulic servo CNC bending machine includes a pump body. A mounting bracket is provided at the front end of the pump body. A pair of fans are longitudinally arranged at the front end of the mounting bracket. Three first heat-conducting plates are laterally inclined at the front end of each fan. This utility model solves the problem of cumbersome installation of existing valve groups and the impact on hydraulic oil heat dissipation as the number of installed valves increases. In this utility model, the heat dissipation position of the conduit is directly placed between the second and first heat-conducting plates. The conduit can be moved into the mounting hole. Manually twisting the threaded rod laterally allows the first and second heat-conducting plates to clamp the conduit, stably clamping it inside the mounting hole and preventing heat accumulation.

Description

Technical Field

[0001] This utility model relates to the field of bending machine technology, specifically to a servo motor drive pressure compensation device for an electro-hydraulic servo CNC bending machine. Background Technology

[0002] In electro-hydraulic servo CNC bending machines, the servo motor-driven pressure compensation device is essentially a servo pump. It is a key component that uses the servo motor to precisely control the output flow and pressure of the servo pump. It can adjust the hydraulic system pressure in real time according to parameters such as the material, thickness and bending angle of the workpiece, ensuring stable and accurate pressure during the bending process. Through the rapid response and precise control of the servo motor, it effectively compensates for pressure fluctuations caused by factors such as load changes, thereby improving bending accuracy and quality.

[0003] Chinese patent CN222010636U discloses an integrated valve group for a two-piece servo pump bending machine hydraulic system, including a valve block with a pressure valve mounted on the front. This utility model can fix the conduit by setting a fixing groove and open a flow groove on the inner side of the fixing block to cool down the pressure oil inside the conduit fixed on the outer wall of the fixing block. This can ensure the stable operation of the device while tidying up the pipeline.

[0004] During use, the hydraulic oil flows through the conduits outside the device and is cooled. However, when all the conduits are installed inside a fixed block, the installation is more complicated. As the number of conduits increases, the cooling capacity of the fixed block will gradually decrease, affecting the heat dissipation of the hydraulic oil. Utility Model Content

[0005] The purpose of this invention is to provide a servo motor drive pressure compensation device for an electro-hydraulic servo CNC bending machine. The heat dissipation position of the conduit is directly placed between the second heat-conducting plate and the first heat-conducting plate. The conduit can be moved into the mounting hole. Furthermore, manually twisting the threaded rod can laterally clamp the conduit between the first and second heat-conducting plates, which can stably clamp the conduit into the mounting hole without causing heat accumulation and achieving good heat dissipation, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a servo motor driven pressure compensation device for an electro-hydraulic servo CNC bending machine, comprising a pump body, a mounting bracket at the front end of the pump body, a pair of fans longitudinally arranged at the front end of the mounting bracket, three first heat-conducting plates arranged laterally at the front end of each fan, a second heat-conducting plate arranged on one side of each of the first heat-conducting plates, a mounting hole recessed on the side of the first heat-conducting plate facing the second heat-conducting plate, a threaded rod with threaded engagement arranged laterally through the middle of the second heat-conducting plate, one end of the threaded rod being rotatably connected to the side of the first heat-conducting plate, the reserved mounting hole facilitating the direct placement of a conduit for transmitting hydraulic oil, and the movement of the second heat-conducting plate toward the first heat-conducting plate directly clamping and fixing it, and close contact with the mounting hole facilitating efficient heat dissipation from the conduit, thus improving heat dissipation efficiency.

[0007] Preferably, both ends of the threaded rod are provided with guide posts that are welded and fixed to the second heat-conducting plate and are laterally oriented towards the first heat-conducting plate. The first heat-conducting plate is recessed with a guide hole facing the guide post, and the inside of the guide hole is slidably connected to the outside of the guide post. The reserved guide post facilitates the lateral movement of the second heat-conducting plate. The welded guide post can stably enable the second heat-conducting plate to move laterally and complete the clamping of the conduit.

[0008] Preferably, a first heat dissipation groove is provided on one side of the outer surface of the second heat-conducting sheet. After the heat is transferred to the second heat-conducting sheet through the conduit, the heat dissipation area can be increased through the first heat dissipation groove, thereby improving the heat dissipation effect.

[0009] Preferably, a second heat dissipation groove is provided on the other side of the first heat-conducting sheet. After the heat is transferred to the first heat-conducting sheet by the conduit around the beam, the heat dissipation area can be increased through the second heat dissipation groove, thereby improving the heat dissipation effect.

[0010] Preferably, an inclined surface is provided at one end between the first heat-conducting sheet and the second heat-conducting sheet. A pair of inclined surfaces are mirror images of each other, and the two inclined surfaces are inclined toward the second heat dissipation groove and the first heat dissipation groove, respectively. The inclined surface can guide the heat dissipation gas, guide the flow and increase the heat dissipation speed, and avoid the gas from colliding with the first heat-conducting sheet and causing instability in the air flow trajectory.

[0011] Preferably, both the first and second heat-conducting sheets are made of copper. Copper can improve thermal conductivity, facilitate heat transfer, and meet heat dissipation requirements.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention allows for clamping of hydraulic oil conduits without disassembling the connections at both ends. The heat dissipation point of the conduit is placed directly between the second and first heat-conducting plates. The conduit can be moved into the mounting hole, making conduit placement convenient. Furthermore, manually turning the threaded rod allows the first and second heat-conducting plates to clamp the conduit laterally, ensuring stable clamping within the mounting hole. This enables the mounting hole to efficiently transfer and dissipate heat. Conduit placement is convenient, and clamping and fixing are easy. Moreover, the conduits to be cooled are sequentially installed at the front end of the fan, preventing heat from contacting each other and avoiding heat accumulation, resulting in good heat dissipation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0015] Figure 2 This is a side view of the external structure of the mounting bracket of this utility model;

[0016] Figure 3 This is a schematic diagram showing the positional relationship of the vent holes in this utility model;

[0017] Figure 4 This is a schematic diagram of the gas flow trajectory of this utility model;

[0018] Figure 5 This is a schematic diagram of the rotation trajectory of the threaded rod of this utility model.

[0019] In the diagram: 1. Pump body; 2. Mounting bracket; 3. Fan; 4. First heat-conducting plate; 5. Second heat-conducting plate; 6. Threaded rod; 7. Vent hole; 8. Mounting hole; 9. First heat dissipation groove; 10. Second heat dissipation groove; 11. Inclined surface; 12. Guide hole; 13. Guide post. Detailed Implementation

[0020] The present invention will be further described below with reference to specific embodiments.

[0021] like Figure 1 As shown, the servo motor drive pressure compensation device of the electro-hydraulic servo CNC bending machine in this embodiment includes a pump body 1. The pump body 1 is composed of a valve block, a pressure valve, a fast down valve, a proportional servo valve, a back pressure valve, and a solenoid directional valve. The above-mentioned structure is a conventional technical means to assemble the pump body 1. This application does not improve the external structure and composition of the pump body 1. Therefore, the pump body 1 is not described in detail in this application.

[0022] Furthermore, a mounting bracket 2 is provided at the front end of the pump body 1, and the mounting bracket 2 is fixedly connected to the pump body 1 by bolts. A pair of fans 3 are arranged longitudinally at the front end of the mounting bracket 2. After the fans 3 are powered on, they can generate a stable airflow trajectory. The start-up of the fans 3 can efficiently dissipate heat.

[0023] like Figure 2 , Figure 3 and Figure 4 As shown, in order to facilitate the clamping and fixing of the external conduit of the hydraulic oil and to facilitate the heat transfer of the conduit, three first heat-conducting plates 4 are horizontally inclined at the front end of each of the two fans 3. A second heat-conducting plate 5 is provided on one side of the first heat-conducting plate 4. The conduit can be clamped and fixed through the second heat-conducting plate 5 and the first heat-conducting plate 4. The clamping and fixing can also assist in the heat transfer and facilitate the heat discharge.

[0024] The first heat-conducting plate 4 and the second heat-conducting plate 5 are both made of copper. The use of copper in the first heat-conducting plate 4 and the second heat-conducting plate 5 can improve the heat conduction efficiency and heat dissipation capacity.

[0025] In this embodiment, the side of the first heat-conducting sheet 4 facing the second heat-conducting sheet 5 is recessed with a mounting hole 8, which is used for placing and installing the conduit.

[0026] In order to stably drive the second heat-conducting plate 5 so that the second heat-conducting plate 5 actively moves toward the first heat-conducting plate 4 to complete the clamping of the required conduit, a threaded rod 6 is transversely provided through the middle position of the second heat-conducting plate 5, and the outside of the threaded rod 6 is threadedly engaged with the through position of the second heat-conducting plate 5. One end of the threaded rod 6 is rotatably connected to the side of the first heat-conducting plate 4. By twisting the threaded rod 6, relative movement can be generated between it and the second heat-conducting plate 5.

[0027] Both ends of the threaded rod 6 are laterally positioned with guide posts 13 facing the first heat-conducting plate 4, and the guide posts 13 are welded and fixed to the second heat-conducting plate 5. Figure 5 As shown, the first heat-conducting plate 4 is recessed towards the guide post 13 and has a guide hole 12. The interior of the guide hole 12 is slidably connected to the exterior of the guide post 13. During the process of the second heat-conducting plate 5 moving laterally toward the first heat-conducting plate 4, the guide post 13 moves laterally within the guide hole 12. When the threaded rod 6 rotates and moves relative to the second heat-conducting plate 5, the guide hole 12 restricts the guide post 13, allowing the second heat-conducting plate 5 to move laterally stably. This can efficiently clamp the hydraulic oil transmission conduit, clamp the conduit inside the mounting hole 8, and provide stable clamping capability.

[0028] In order to provide stable heat dissipation intensity, a first heat dissipation groove 9 is recessed on one side of the outer surface of the second heat-conducting plate 5, and a second heat dissipation groove 10 is recessed on the other side of the outer surface of the first heat-conducting plate 4. The recessed second heat dissipation groove 10 and the first heat dissipation groove 9 can increase the heat dissipation area and increase the heat dissipation speed.

[0029] It is worth mentioning that an inclined surface 11 is provided at one end between the first heat-conducting plate 4 and the second heat-conducting plate 5. A pair of inclined surfaces 11 are mirror images of each other. The two inclined surfaces 11 are inclined toward the second heat dissipation groove 10 and the first heat dissipation groove 9, respectively. The inclined surface 11 can facilitate the flow of gas, so that the gas can actively and efficiently flow to the first heat dissipation groove 9 and the second heat dissipation groove 10.

[0030] The upper and lower ends of the first heat-conducting plate 4 are welded and fixed to the mounting bracket 2 respectively. The welding and threaded fit make it easy to install the first heat-conducting plate 4 and the second heat-conducting plate 5 at the front end of the fan 3. In order to facilitate the fan 3 to draw gas and cool it efficiently, the mounting bracket 2 is provided with a vent hole 7 through the fan 3. When the fan 3 is started, the gas can be drawn from the vent hole 7 and blown towards the clamping position of the first heat-conducting plate 4 and the second heat-conducting plate 5.

[0031] Working principle: The device is used to cool the hydraulic oil flowing out of the servo pump. After the hydraulic oil is guided by the conduit, it flows outside the device. The conduit is inserted between the second heat-conducting plate 5 and the first heat-conducting plate 4, and finally inserted into the mounting hole 8. The rotating threaded rod 6 generates relative movement with the second heat-conducting plate 5. After sliding in the guide hole 12 through the guide post 13, the second heat-conducting plate 5 can change from rotational motion to lateral linear motion. The first heat-conducting plate 4 and the second heat-conducting plate 5 can clamp and fix the conduit inside the mounting hole 8. The temperature of the hydraulic oil inside the mounting hole 8 is transferred to the tightly attached first heat-conducting plate 4 and second heat-conducting plate 5 through the conduit. The heat dissipation area can be expanded by the recessed second heat dissipation groove 10 and the first heat dissipation groove 9. The fan 3 is started. The fan 3 draws the gas from the rear end through the vent 7. After being guided by the inclined surface 11, the gas flows towards the second heat dissipation groove 10 and the first heat dissipation groove 9 respectively, completing the heat dissipation of the hydraulic oil in the clamped conduit.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A servo motor drive pressure compensation device for an electro-hydraulic servo CNC bending machine, comprising a pump body (1), characterized in that, The pump body (1) is provided with a mounting bracket (2) at the front end. A pair of fans (3) are arranged longitudinally at the front end of the mounting bracket (2). Three first heat-conducting plates (4) are arranged laterally at the front end of each fan (3). A second heat-conducting plate (5) is arranged on one side of the first heat-conducting plate (4). A mounting hole (8) is recessed on the side of the first heat-conducting plate (4) facing the second heat-conducting plate (5). A threaded rod (6) with threaded engagement is arranged laterally through the middle position of the second heat-conducting plate (5). One end of the threaded rod (6) is rotatably connected to the side of the first heat-conducting plate (4).

2. The servo motor drive pressure compensation device for the electro-hydraulic servo CNC bending machine according to claim 1, characterized in that, Both ends of the threaded rod (6) are provided with guide posts (13) that are welded and fixed to the second heat-conducting plate (5) and are laterally oriented towards the first heat-conducting plate (4). The first heat-conducting plate (4) is recessed towards the guide post (13) and has a guide hole (12) that is slidably connected to the outside of the guide post (13).

3. The servo motor drive pressure compensation device for the electro-hydraulic servo CNC bending machine according to claim 2, characterized in that, A first heat dissipation groove (9) is provided on one side of the outer side of the second heat-conducting sheet (5).

4. The servo motor drive pressure compensation device for the electro-hydraulic servo CNC bending machine according to claim 3, characterized in that, A second heat dissipation groove (10) is provided on the other side of the first heat-conducting sheet (4).

5. The servo motor drive pressure compensation device for the electro-hydraulic servo CNC bending machine according to claim 4, characterized in that, An inclined surface (11) is provided at one end between the first heat-conducting plate (4) and the second heat-conducting plate (5). A pair of inclined surfaces (11) are mirror images of each other, and the two inclined surfaces (11) are inclined toward the second heat dissipation groove (10) and the first heat dissipation groove (9) respectively.

6. The servo motor drive pressure compensation device for the electro-hydraulic servo CNC bending machine according to claim 5, characterized in that, The first heat-conducting sheet (4) and the second heat-conducting sheet (5) are both made of copper.

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