Displacement control device

Abstract

The utility model belongs to the technical field of precision machinery, and discloses a displacement control device. The displacement control device comprises a support, a driving mechanism and a displacement assembly. The support comprises a stand column and a beam connected to the top of the stand column. The driving mechanism comprises a driving motor, a lead screw and a rotating nut, the driving motor is fixed to the beam, the top end of the lead screw is in threaded connection with the rotating nut, and the driving motor drives the rotating nut to rotate. The displacement assembly is connected to the bottom end of the lead screw. The driving motor drives the rotating nut to rotate to achieve vertical movement of the lead screw, and then vertical movement of the displacement assembly is controlled. According to the displacement control device, by controlling the number of rotation turns of the driving motor and combining the transmission ratio between the driving motor and the rotating nut and the screw pitch of the lead screw, accurate control over the movement stroke of the lead screw is achieved, hydraulic oil is prevented from being adopted as a medium for displacement conduction, the structure is simple, and therefore the stability and reliability of the displacement stroke are improved.

Description

Technical Field

[0001] This utility model relates to the field of precision machinery technology, and in particular to a displacement control device. Background Technology

[0002] With the development of technology, various displacement control devices have emerged, enabling higher precision machining and manufacturing. Displacement control devices are widely used in machine tool processing, rail transportation, and hydraulic and lubricating oil filling. Currently, electric or pneumatic displacement control devices are commonly used in the market, controlling stroke and displacement through hydraulic actuators. However, hydraulic stroke control suffers from numerous leakage points and sensitivity to operating temperature, leading to unstable operation, affecting displacement accuracy, reducing operational reliability, and failing to meet actual application requirements.

[0003] Therefore, a displacement control device is urgently needed to solve the above problems. Utility Model Content

[0004] One objective of this invention is to provide a displacement control device that can accurately measure the distance moved and ensure the reliability of the displacement stroke.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A displacement control device is provided, comprising:

[0007] The support includes a column and a crossbeam, with the crossbeam connected to the top of the column;

[0008] The driving mechanism includes a drive motor, a lead screw, and a rotating nut. The drive motor is fixed to the crossbeam, and the top end of the lead screw is threadedly connected to the rotating nut. The drive motor drives the rotating nut to rotate.

[0009] A displacement assembly is connected to the bottom end of the lead screw.

[0010] As an alternative to the displacement control device, the bracket further includes a guide rail connected to the column in the vertical direction. The displacement component includes a moving part and a slider, the slider being connected to the side wall of the moving part and slidably connected to the guide rail.

[0011] As an optional solution for the displacement control device, the bracket further includes an upper stop and a lower stop, which are connected to the column and spaced apart in the vertical direction. The displacement component also includes a limiting member, which is connected to the moving member and is positioned between the upper stop and the lower stop.

[0012] As an alternative to the displacement control device, the drive mechanism further includes a first pulley, a second pulley, and a transmission belt. The first pulley is connected to the drive end of the drive motor, the rotating nut is fixed to the second pulley, and the transmission belt is sleeved on the first pulley and the second pulley.

[0013] As an alternative to the displacement control device, the displacement control device further includes a controller, which is fixed to the bracket and signal-connected to the drive motor.

[0014] As an optional solution for the displacement control device, the displacement control device further includes a media supply assembly. The displacement assembly includes a moving part, a connecting part, and an abutting part. The connecting part is connected above the moving part and includes a bent portion that bends upward. The bottom of the lead screw passes through the bent portion. The abutting part is located between the bent portion and the moving part and is connected to the lead screw. The media supply assembly includes a storage tank, a cover plate, a position sensor, a pump body, and a discharge pipe. The cover plate is slidably sealed to the storage tank. The cover plate and the pump body are connected to the moving part. The position sensor is disposed between the abutting part and the moving part and is electrically connected to the pump body. The discharge pipe connects the media supply assembly and external equipment.

[0015] As an alternative to the displacement control device, the medium supply assembly further includes a connecting rod that connects the moving part and the cover plate.

[0016] As an optional displacement control device, a pressure gauge is installed in the discharge pipe.

[0017] As an alternative to the displacement control device, the bracket includes a support plate supported below the column, and the media supply component is disposed on the support plate.

[0018] The beneficial effects of this utility model are:

[0019] This invention provides a displacement control device. A drive motor drives a rotating nut to rotate, causing the nut to rotate relative to a lead screw, thus moving the lead screw up and down, and consequently controlling the up and down movement of the displacement assembly. This displacement control device, by controlling the number of rotations of the drive motor, combined with the transmission ratio between the drive motor and the rotating nut and the lead screw pitch, achieves precise control of the lead screw's travel distance. It avoids using hydraulic oil as a medium for displacement transmission, has a simple structure, and thus improves the stability and reliability of the displacement travel. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the displacement control device provided by this utility model;

[0021] Figure 2 This is a schematic diagram of the transmission between the second pulley and the lead screw provided by this utility model;

[0022] Figure 3 This is an installation diagram of the media supply component provided by this utility model.

[0023] In the picture:

[0024] 100. Bracket; 110. Column; 120. Horizontal beam; 130. Guide rail; 140. Upper stop; 150. Lower stop; 160. Support plate;

[0025] 200. Drive mechanism; 210. Drive motor; 220. Lead screw; 230. Rotating nut; 240. First pulley; 250. Second pulley; 260. Transmission belt;

[0026] 300. Displacement component; 310. Moving part; 320. Slider; 330. Limiting part; 340. Connecting part; 341. Bending part; 350. Abutment part;

[0027] 400. Controller;

[0028] 500, Media supply assembly; 510, Storage tank; 520, Cover plate; 530, Position sensor; 540, Pump body; 550, Discharge pipe; 551, Pressure gauge; 560, Connecting rod. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not the entire structure.

[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0033] like Figures 1 to 2 As shown, the displacement control device in this embodiment includes a bracket 100, a drive mechanism 200, and a displacement assembly 300. The bracket 100 includes a column 110 and a crossbeam 120, with the crossbeam 120 connected to the top of the column 110. The drive mechanism 200 includes a drive motor 210, a lead screw 220, and a rotating nut 230. The drive motor 210 is fixed to the crossbeam 120, and the top end of the lead screw 220 is threadedly connected to the rotating nut 230, driving the rotating nut 230 to rotate. The displacement assembly 300 is connected to the bottom end of the lead screw 220.

[0034] Based on the above design, in this displacement control device, the bracket 100 supports the drive mechanism 200 and the displacement component 300. The drive motor 210 drives the rotating nut 230 to rotate, causing the rotating nut 230 to rotate relative to the lead screw 220, thereby realizing the up-and-down movement of the lead screw 220 and controlling the up-and-down movement of the displacement component 300. This displacement control device, by controlling the number of rotations of the drive motor 210, combined with the transmission ratio between the drive motor 210 and the rotating nut 230 and the pitch of the lead screw 220, achieves precise control of the travel of the lead screw 220. This avoids using hydraulic oil as a medium for displacement transmission, simplifies the structure, and improves the stability and reliability of the displacement travel.

[0035] In this embodiment, the drive mechanism 200 further includes a first pulley 240, a second pulley 250, and a transmission belt 260. The first pulley 240 is connected to the drive end of the drive motor 210, the rotating nut 230 is fixed to the second pulley 250, and the transmission belt 260 is sleeved on the first pulley 240 and the second pulley 250. Using belt drive for power transmission avoids the large impact caused by the drive motor 210 directly driving the rotating nut 230 and the lead screw 220, thus improving the stability of the drive mechanism 200. Preferably, the transmission belt 260 can be a toothed belt, which can prevent slippage, ensure the accuracy of the transmission ratio between the first pulley 240 and the second pulley 250, and improve the precision of power transmission. In some other embodiments, gear transmission, chain transmission, and other power transmission methods can also be used, which will not be elaborated here.

[0036] Furthermore, the displacement control device also includes a controller 400, which is fixed to the bracket 100 and connected to the drive motor 210 via signal transmission. The controller 400 allows for more precise control of the rotation number of the drive motor 210, facilitating operation. In this embodiment, the controller 400 is configured as a PLC controller, which can store and run control programs to control the drive motor 210 to achieve its function. In some other embodiments, the controller 400 may also be a centralized or distributed microcontroller, etc., which will not be elaborated further here.

[0037] Optionally, the bracket 100 further includes a guide rail 130, which is connected to the column 110 in the vertical direction. The displacement component 300 includes a moving part 310 and a slider 320, which is connected to the side wall of the moving part 310 and slidably connected to the guide rail 130. The guide rail 130 can guide the displacement component 300 and improve the stability of the displacement component 300 during movement.

[0038] Furthermore, the bracket 100 also includes an upper stop 140 and a lower stop 150, which are connected to the column 110 and spaced apart in the vertical direction. The displacement assembly 300 also includes a limiting member 330, which is connected to the moving member 310 and is positioned between the upper stop 140 and the lower stop 150. This arrangement limits the movement range of the moving member 310, preventing the lead screw 220 from moving beyond the specified range and avoiding mechanical damage.

[0039] like Figure 3As shown, in some embodiments, the displacement control device further includes a medium supply assembly 500. The displacement assembly 300 includes a moving member 310, a connecting member 340, and an abutting member 350. The connecting member 340 is connected above the moving member 310 and includes a bent portion 341 that is bent upward. The bottom of the lead screw 220 passes through the bent portion 341. The abutting member 350 is located between the bent portion 341 and the moving member 310 and is connected to the lead screw 220.

[0040] The connector 340 is connected above the movable member 310 and has an upward bending portion 341. A receiving space is formed between the bending portion 341 and the movable member 310. The abutment 350 is disposed in the receiving space. The lead screw 220 passes through the bending portion 341 and is connected to the abutment 350. When the lead screw 220 moves downward, the abutment 350 pushes the movable member 310 downward. When the lead screw 220 moves upward, the abutment 350 abuts against the bending portion 341 and moves upward, thereby realizing the upward movement of the movable member 310.

[0041] The media supply assembly 500 includes a storage tank 510, a cover plate 520, a position sensor 530, a pump body 540, and a discharge pipe 550. The cover plate 520 is slidably sealed to the storage tank 510. The cover plate 520 and the pump body 540 are connected to the moving part 310. The position sensor 530 is disposed between the abutment part 350 and the moving part 310 and is electrically connected to the pump body 540. The discharge pipe 550 connects the media supply assembly 500 and external equipment.

[0042] In this embodiment, the working steps and effects of the medium supply component 500 are illustrated using oil as an example. Users can also select other liquid, colloidal, or solid media, such as pure water or powder, according to their actual needs. The oil is stored in the storage tank 510. The cover plate 520 is connected to the moving part 310, and the cover plate 520 slides and seals against the inner wall of the storage tank 510, so that the storage tank 510 is in a vacuum state. When the oil in the storage tank 510 decreases, the cover plate 520 can slide downward under the vacuum pressure. A position sensor 530 is installed between the abutment member 350 and the moving member 310. When the lead screw 220 moves downward into the detection range of the position sensor 530, the position sensor 530 can activate the pump body 540 to deliver oil to the discharge pipe 550. As the oil in the storage tank decreases, the cover plate 520 slides downward, causing the moving member 310 and the position sensor 530 to move downward, so that the position sensor 530 and the abutment member 350 move away from each other. When the abutment member 350 moves away from the detection range of the position sensor 530, the position sensor 530 controls the pump body 540 to close, thus completing the discharge. This media supply assembly 500 uses the rotation of the drive motor 210 to control the rotation of the lead screw 220, automatically opening and closing the pump body 540 for discharge. It has a simple structure, precise discharge control, facilitates later maintenance, reduces workload, and improves work efficiency.

[0043] Furthermore, the media supply assembly 500 also includes a connecting rod 560, which is connected between the movable member 310 and the cover plate 520. By using connecting rods 560 of different lengths, the relative distance between the cover plate 520 and the movable member 310 can be adjusted to ensure the rationality of the relative position between the cover plate 520 and the storage tank 510 during the movement of the movable member 310.

[0044] Optionally, a pressure gauge 551 is installed in the discharge pipe 550. The pressure gauge 551 can be used to observe the pressure in the discharge pipe 550 in real time, ensuring that the pressure in the pipe can supply oil steadily and avoiding the oil supply stagnation caused by too low pressure and the damage to the pipe body caused by too high pressure.

[0045] Furthermore, the support 100 includes a support plate 160, which is supported below the column 110. The media supply component 500 is disposed on the support plate 160. A reinforcing beam is also connected between the support plate 160 and the column 110, thereby ensuring the connection strength of the support 100 and improving the stability of the support 100.

[0046] Optionally, the bracket 100 also includes casters 170, which are connected to the support plate 160 to facilitate the movement of the media supply assembly 500.

[0047] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A displacement control device, characterized by, include: A support (100) includes a column (110) and a crossbeam (120), the crossbeam (120) being connected to the top of the column (110); A drive mechanism (200) includes a drive motor (210), a lead screw (220), and a rotating nut (230). The drive motor (210) is fixed to the crossbeam (120), and the top end of the lead screw (220) is threadedly connected to the rotating nut (230). The drive motor (210) drives the rotating nut (230) to rotate. Displacement assembly (300) is connected to the bottom end of the lead screw (220).

2. The displacement control device of claim 1, wherein The bracket (100) also includes a guide rail (130), which is connected to the column (110) in the vertical direction. The displacement component (300) includes a moving part (310) and a slider (320), which is connected to the side wall of the moving part (310) and slidably connected to the guide rail (130).

3. The displacement control device of claim 2, wherein The bracket (100) further includes an upper stop (140) and a lower stop (150), the upper stop (140) and the lower stop (150) being connected to the column (110) and spaced apart in the vertical direction. The displacement component (300) further includes a limiting member (330), the limiting member (330) being connected to the moving member (310), and the limiting member (330) being positioned between the upper stop (140) and the lower stop (150).

4. The displacement control device of claim 1, wherein The drive mechanism (200) further includes a first pulley (240), a second pulley (250), and a transmission belt (260). The first pulley (240) is connected to the drive end of the drive motor (210), the rotating nut (230) is fixed to the second pulley (250), and the transmission belt (260) is sleeved on the first pulley (240) and the second pulley (250).

5. The displacement control device of claim 1, wherein The displacement control device further includes a controller (400), which is fixed to the bracket (100) and signal-connected to the drive motor (210).

6. The displacement control device of claim 1, wherein The displacement control device further includes a medium supply assembly (500). The displacement assembly (300) includes a moving part (310), a connecting part (340), and an abutting part (350). The connecting part (340) is connected above the moving part (310). The connecting part (340) includes a bent portion (341) that bends upward. The bottom of the lead screw (220) passes through the bent portion (341). The abutting part (350) is located between the bent portion (341) and the moving part (310) and is connected to the lead screw (220). The media supply assembly (500) includes a storage tank (510), a cover plate (520), a position sensor (530), a pump body (540), and a discharge pipe (550). The cover plate (520) is slidably and sealingly connected to the storage tank (510). The cover plate (520) and the pump body (540) are connected to the moving part (310). The position sensor (530) is disposed between the abutment part (350) and the moving part (310) and is electrically connected to the pump body (540). The discharge pipe (550) connects the media supply assembly (500) and an external device.

7. The displacement control device of claim 6, wherein The media supply assembly (500) further includes a connecting rod (560) connected between the movable member (310) and the cover plate (520).

8. The displacement control device according to claim 6, characterized in that, A pressure gauge (551) is installed in the discharge pipe (550).

9. The displacement control device of claim 6, wherein The bracket (100) also includes a support plate (160), which is supported below the column (110), and the media supply assembly (500) is disposed on the support plate (160).

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