Positive pressure reset type screw liquid conversion type gap adjusting device

Abstract

The invention belongs to the technical field of composite material preparation machinery, and particularly relates to a positive pressure reset type screw liquid conversion type gap adjusting device which comprises a fixed body, a frame body is installed on one side of the fixed body, a movable body is arranged on the side, away from the fixed body, of the frame body, a mechanical jacking mechanism is arranged on the frame body, and a transverse hole is formed in the side, close to the movable body, of the frame body. A fixed column is arranged in the transverse hole in a sealed and sliding mode, the fixed column moves towards the side close to the moving body through a mechanical jacking mechanism and abuts against the moving body, and a gas pressure reset device is further arranged on the frame body and used for driving the fixed column to move in the direction away from the moving body. The device has the reset function and can meet the no-load adjustment function.

Description

Technical Field

[0001] The invention belongs to the technical field of composite material preparation machinery, and in particular relates to a positive pressure reset screw-liquid conversion gap adjustment device. Background Art

[0002] In the composite materials, new energy, thin film preparation and other industries, the production of high-precision and ultra-thin composite materials, electrode sheets, thin films and other materials requires the use of high-precision gap control and adjustment systems.

[0003] The current mainstream approach to gap control and adjustment systems is mechanical. Method 1 utilizes a screw and worm gear. A motor or other device drives the worm, which is then converted by the worm gear to control screw extension and retraction, thereby converting the motion into linear (gap) motion. However, due to mechanical play between the screw and the worm gear and machining accuracy issues, this method suffers from poor gap control accuracy and is unsuitable for high-precision gap adjustment. Method 2 utilizes a screw and wedge block. A motor or other device drives the screw, which in turn pulls the wedge block in horizontal motion. The wedge block's inclined surface, in turn, drives the opposing inclined surface in vertical (gap) motion. However, in this method, the control error caused by mechanical play and machining accuracy in the screw drive is proportionally reduced by the wedge block. However, this system requires the wedge block to be coaxially mounted with the screw and motor, requiring a large axial mounting space. Furthermore, the machining accuracy of the wedge block's mating surface also affects operational accuracy. Method 3 utilizes a servo motor and ball screw. The servo motor drives the ball screw, which then translates into linear (gap) motion. In this method, ball screws offer improved transmission accuracy compared to screws, but because they lack self-locking properties, they lack the stability to provide gap control. Adding a worm gear self-locking feature also increases gap control accuracy due to mechanical play and machining accuracy issues in the worm gear. Furthermore, the ball screw must be aligned with the direction of force.

[0004] Therefore, it is necessary to design a positive pressure reset screw-liquid conversion gap adjustment device to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a positive pressure reset screw-liquid conversion gap adjustment device to solve the problems existing in the above-mentioned prior art.

[0006] To achieve the above-mentioned objectives, the present invention provides a positive pressure reset type screw-liquid conversion type gap adjustment device, comprising a fixed body, a frame body being installed on one side of the fixed body, a movable body being provided on the side of the frame body away from the fixed body, a mechanical lifting mechanism being provided on the frame body, a transverse hole being provided on the side of the frame body close to the movable body, a fixed column being sealingly and slidingly provided in the transverse hole, the fixed column being moved toward the side close to the movable body by the mechanical lifting mechanism and being against the movable body, a gas pressure reset device being further provided on the frame body, the gas pressure reset device being used to drive the fixed column to move in a direction away from the movable body.

[0007] Preferably, the mechanical lifting mechanism includes a driven bevel gear, an avoidance groove is opened in the frame, the driven bevel gear is rotatably connected in the avoidance groove through a bearing, the middle part of the bottom end of the driven bevel gear is a hollow structure, and the cylinder rod is threadedly connected to the hollow structure, a vertical hole is opened in the frame, the cylinder rod is slidably limited in the vertical hole, a positive pressure cavity flow channel is provided at the bottom end of the frame, the vertical hole and the horizontal hole are both connected to the positive pressure cavity flow channel, and the driven bevel gear transmission is cooperated with a drive assembly.

[0008] Preferably, the driving assembly includes a driving bevel gear, a avoidance hole is opened on the frame, the driving bevel gear is rotatably connected in the avoidance hole through a bearing, an adjusting motor is installed on the frame, the output shaft of the adjusting motor is connected to the driving bevel gear, and the driving bevel gear is meshed with the driven bevel gear.

[0009] Preferably, a groove is formed at the bottom end of the frame, the groove is communicated with the vertical hole, a sealing cover is fastened to the frame by bolts, and the sealing cover and the groove together enclose the positive pressure cavity flow channel.

[0010] Preferably, the cylinder rod is provided with a vertical groove along the axial direction, and a guide pin is connected to the inner wall of the vertical hole, and the guide pin is slidably limited in the vertical groove.

[0011] Preferably, the port thread sealing connection of the transverse hole is connected with a collar, the collar sliding sealing sleeve is arranged on the fixed column, a plurality of annular grooves are opened on the fixed column, a sealing ring is fixedly sleeved on the annular groove, and the fixed column is sealed with the inner wall of the transverse hole through the sealing ring.

[0012] Preferably, the gas pressure reset device includes a pressure regulating part, a fixed column back-pressure cavity is opened in the circumferential direction on the outer wall of the middle part of the fixed column, a frame flow channel is opened in the vertical direction of the frame, the frame flow channel is connected with the fixed column back-pressure cavity, one end of the pressure regulating part is connected with the frame flow channel through an air pipe, and the other end of the pressure regulating part is connected with a compressed gas source.

[0013] Preferably, the pressure regulating component is a pressure regulating valve.

[0014] Preferably, the top end of the frame is fastened with a pressure cover by bolts, and the pressure cover is used to close the avoidance groove.

[0015] Preferably, a plurality of annular sealing grooves are formed on the outer wall of the bottom end of the oil cylinder rod along the circumferential direction, and a sealing ring is arranged in the annular sealing groove, and the oil cylinder rod is sealed with the vertical hole through the sealing ring.

[0016] Compared with the prior art, the present invention has the following advantages and technical effects:

[0017] The present invention provides a positive-pressure reset screw-liquid conversion gap adjustment device that reduces errors caused by mechanical adjustment due to play and machining precision. The liquid conversion method also allows for greater flexibility in the design and manufacture of the gap adjustment mechanism, enabling flexible installation. The device also features a reset function and can accommodate no-load adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive work.

[0019] Figure 1 This is a structural schematic diagram of a positive pressure reset screw-liquid conversion gap adjustment device proposed by the present invention;

[0020] Figure 2 It is a structural schematic diagram of the mechanical lifting mechanism of the present invention;

[0021] Figure 3 Schematic diagram of the mechanism of the driving motor and the regulating valve in the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the cylinder rod diameter D1 in the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the fixed column diameter D2 in the present invention;

[0024] Among them: 1. Frame; 2. Adjusting motor; 3. Driving bevel gear; 4. Bearing; 5. Driven bevel gear; 6. Cylinder rod; 7. Guide pin; 8. Sealing ring; 9. Positive pressure cavity flow channel; 10. Sealing cover; 11. Fixed column; 12. Pressure cover; 13. Frame flow channel; 14. Fixed column negative pressure cavity; 15. Air pipe; 16. Pressure regulating valve; 17. Fluid; 18. Compressed air; 19. Fixed body; 20. Moving body. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Reference Figures 1 to 5 As shown, the present invention provides a positive pressure reset screw-liquid conversion gap adjustment device, including a fixed body 19, a frame body 1 is installed on one side of the fixed body 19, a moving body 20 is provided on the side of the frame body 1 away from the fixed body 19, a mechanical lifting mechanism is provided on the frame body 1, a transverse hole is opened on the side of the frame body 1 close to the moving body 20, a fixed column 11 is sealed and slidably provided in the transverse hole, the fixed column 11 is moved toward the side close to the moving body 20 by the mechanical lifting mechanism and abuts against the moving body 20, and a gas pressure reset device is further provided on the frame body 1, the gas pressure reset device is used to drive the fixed column 11 to move in a direction away from the moving body 20.

[0028] The mechanical lifting mechanism is provided to drive the fixed column 11 along the transverse hole on the frame 1 to approach the movable body 20 and press the movable body 20 away from the fixed body 19, thereby adjusting the gap between the movable body 20 and the fixed body 19. It should be noted that the movable body 20 contacts the outer end surface of the fixed column 11 under the action of external force, and the driving force here can be an elastic driving force applied by a hydraulic cylinder or a pneumatic cylinder.

[0029] The gas pressure reset device is provided to drive the fixed column 11 to approach the fixed body 19 along the transverse hole on the frame 1, thereby realizing the reset of the fixed column 11. At the same time, the moving body 20 is driven by the external force to approach the fixed body 19 as the fixed column 11 is reset.

[0030] Furthermore, the mechanical lifting mechanism includes a driven bevel gear 5, an avoidance groove is opened in the frame 1, and the driven bevel gear 5 is rotatably connected in the avoidance groove through the bearing 4. The middle part of the bottom end of the driven bevel gear 5 is a hollow structure, and the cylinder rod 6 is threadedly connected to the hollow structure. A vertical hole is opened in the frame 1, and the cylinder rod 6 is slidably limited in the vertical hole. A positive pressure cavity flow channel 9 is provided at the bottom end of the frame 1, and the vertical hole and the horizontal hole are both connected to the positive pressure cavity flow channel 9. The driven bevel gear 5 is transmitted with a drive component.

[0031] The driven bevel gear 5 is driven to rotate by the driving assembly, and the rotating driven bevel gear 5 is screwed into the cylinder rod 6 through a thread. At the same time, the cylinder rod 6 moves up and down in the vertical direction under the circumferential limit in the vertical hole, thereby changing the volume of the positive pressure cavity flow channel 9, forcing the fluid 17 in the positive pressure cavity flow channel 9 to flow and transmit pressure. In this embodiment, the fluid 17 is hydraulic oil.

[0032] Furthermore, the driving assembly includes a driving bevel gear 3, an avoidance hole is opened on the frame 1, the driving bevel gear 3 is rotatably connected in the avoidance hole through a bearing 4, an adjusting motor 2 is installed on the frame 1, the output shaft of the adjusting motor 2 is connected to the driving bevel gear 3, and the driving bevel gear 3 is meshed with the driven bevel gear 5.

[0033] The driving bevel gear 3 is driven to rotate by adjusting the motor 2 , and the driven bevel gear 5 is driven to rotate by the meshing transmission between the driving bevel gear 3 and the driven bevel gear 5 .

[0034] Furthermore, a groove is provided at the bottom end of the frame 1 , which is communicated with the vertical hole. A sealing cover 10 is fastened to the frame 1 by bolts, and the sealing cover 10 and the groove together enclose a positive pressure cavity flow channel 9 .

[0035] This structural arrangement makes it easy to replace consumable parts such as the sealing ring 8.

[0036] Furthermore, a vertical groove is formed in the cylinder rod 6 along the axial direction, and a guide pin 7 is connected to the inner wall of the vertical hole, and the guide pin 7 is slidably limited in the vertical groove.

[0037] The circumferential direction of the cylinder rod 6 is constrained by the limiting cooperation between the guide pin 7 and the vertical groove.

[0038] Furthermore, the port thread sealing connection of the transverse hole is connected with a collar, and the collar sliding sealing sleeve is arranged on the fixed column 11. A plurality of annular grooves are opened on the fixed column 11, and a sealing ring 8 is fixedly sleeved on the annular groove. The fixed column 11 is sealed with the inner wall of the transverse hole through the sealing ring 8.

[0039] Specifically, an internal thread is provided at the edge of the port of the transverse hole, and an external thread is provided on the outer wall of the collar. The collar is screwed and fixed at the port of the transverse hole by means of the internal and external threads. The end of the fixed column 11 close to the moving body 20 is slidably connected in the collar, and the contact area between the fixed column 11 and the collar is sealed by a sealing ring 8.

[0040] Furthermore, the gas pressure reset device includes a pressure regulating part, a fixed column back pressure cavity 14 is opened in the circumferential direction on the outer wall of the middle part of the fixed column 11, and a frame flow channel 13 is opened in the vertical direction of the frame 1. The frame flow channel 13 is connected to the fixed column back pressure cavity 14, one end of the pressure regulating part is connected to the frame flow channel 13 through the air pipe 15, and the other end of the pressure regulating part is connected to the compressed gas source.

[0041] The pressure regulating component regulates the pressure of the compressed gas 18 and passes it into the frame flow channel 13 through the air pipe 15 and finally into the fixed column back-pressure cavity 14. As the ventilation volume in the fixed column back-pressure cavity 14 increases, the fixed column is prompted to move closer to the fixed body 19 to obtain a larger volume of the fixed column back-pressure cavity 14. At the same time, the motor 2 is adjusted to rotate in the opposite direction and drive the active bevel gear 3 and the driven bevel gear 5 to rotate, causing the cylinder rod 6 to move upward, so that the volume of the positive-pressure cavity flow channel 9 becomes larger. As the fixed column 11 is pushed toward the direction close to the cylinder rod 6, the volume of the positive-pressure cavity flow channel 9 is gradually reduced to achieve dynamic balance. The rightward force provided by the compressed air of the pressure reset device will continue to provide positive pressure for the positive-pressure cavity flow channel 9, thereby preventing the accuracy of the movement of the fixed column 11 from being affected by the negative pressure problem generated in the positive-pressure cavity flow channel 9.

[0042] In addition, the piston diameter of the fixed column 11 is D2 and is larger than the piston diameter D1 of the cylinder rod 6. The moving distance of the fixed column 11 is smaller than the moving distance of the cylinder rod 6. The moving distance ratio is (D1 / 2). 2 :(D2 / 2) 2 The diameter change reduces the moving distance by a square, thereby reducing (D2 / 2) 2 :(D1 / 2) 2 The error caused by the machining accuracy and clearance of the cylinder rod thread and bevel gear is increased by 6 times, and the adjustment accuracy is improved (D2 / 2) 2 :(D1 / 2) 2 times.

[0043] The square ratio of the diameter change (D1 / 2) is achieved by the change in diameter. 2 :(D2 / 2) 2 ), achieving a larger adjustment ratio through a smaller diameter change.

[0044] In the present invention, the diameter of the contact surface between the fixed column and the cylinder rod in contact with the fluid does not change at the contact surface, so there is no influence on the accuracy during fluid conversion.

[0045] Furthermore, the pressure regulating component is a pressure regulating valve 16 .

[0046] Furthermore, a pressure cover 12 is fastened to the top of the frame 1 by bolts, and the pressure cover 12 is used to close the avoidance groove.

[0047] Furthermore, a plurality of annular sealing grooves are formed on the outer wall of the bottom end of the oil cylinder rod 6 along the circumferential direction, and the sealing ring 8 is arranged in the annular sealing groove. The oil cylinder rod 6 is sealed with the vertical hole through the sealing ring 8 .

[0048] The positive pressure reset screw-liquid conversion gap adjustment device provided by the present invention has the following working principle: 1. When the set gap value needs to be increased: the adjusting motor 2 drives the active bevel gear 3 to rotate. At this time, the driven bevel gear 5 rotates accordingly, and the cylinder rod 6 moves downward under the driving force of the internal thread of the driven bevel gear 5. At this time, when the cylinder rod 6 moves a distance L1, the volume in the positive pressure cavity flow channel decreases by V=L1·(D1 / 2) 2 π; Since the fluid 17 is incompressible, it flows to the fixed column 11 under the guidance of the positive pressure cavity flow channel 9. The fixed column 11 is driven by the fluid 17 to move toward the moving body 20. At this time, the pressure regulating valve 16 is in the pressure relief state, and the movement distance of the fixed column 11 is L2 = V / ((D2 / 2) 2 ·π.

[0049] 2. When it is necessary to reduce the set gap value, the regulating motor 2 drives the active bevel gear 3 to rotate in the reverse direction. At this time, the driven bevel gear 5 rotates accordingly, and the cylinder rod 6 moves upward under the driving force of the internal thread of the driven bevel gear 5. At this time, when the cylinder rod moves a distance L1, the volume in the positive pressure cavity flow channel increases by V=L1·(D1 / 2)2·π. At the same time, the pressure regulating valve 16 begins to introduce compressed gas 18, and enters the frame flow channel 13 through the air pipe 15 and finally enters the fixed column back-pressure cavity 14. As the ventilation volume in the fixed column back-pressure cavity 14 increases, the fixed column is prompted to move closer to the fixed body 19. Under the guidance of the positive pressure cavity flow channel, the fluid 17 flows from the fixed column 11 to the cylinder rod 6. At this time, the fixed column 11 is filled with the vacancy of fluid 17.

[0050] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0051] The above are only preferred specific implementation methods of the present application, but the scope of protection of the present application is not limited thereto. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in this application should be covered by the scope of protection of the present application.

Claims

1. A positive pressure reset screw-liquid conversion gap adjustment device, characterized in that: The invention comprises a fixed body (19), a frame body (1) is installed on one side of the fixed body (19), a movable body (20) is arranged on the side of the frame body (1) away from the fixed body (19), a mechanical lifting mechanism is arranged on the frame body (1), a transverse hole is opened on the side of the frame body (1) close to the movable body (20), a fixed column (11) is sealed and slidably arranged in the transverse hole, the fixed column (11) moves to the side close to the movable body (20) through the mechanical lifting mechanism and abuts against the movable body (20), and a gas pressure reset device is also arranged on the frame body (1), and the gas pressure reset device is used to drive the fixed column (11) to move in a direction away from the movable body (20).

2. The positive pressure reset screw-liquid conversion gap adjustment device according to claim 1 is characterized in that: The mechanical lifting mechanism includes a driven bevel gear (5), a avoidance groove is provided in the frame (1), the driven bevel gear (5) is rotatably connected in the avoidance groove through a bearing (4), the middle part of the bottom end of the driven bevel gear (5) is a hollow structure, and a cylinder rod (6) is threadedly connected in the hollow structure, a vertical hole is provided in the frame (1), and the cylinder rod (6) is slidably limited in the vertical hole, a positive pressure cavity flow channel (9) is provided at the bottom end of the frame (1), the vertical hole and the horizontal hole are both connected to the positive pressure cavity flow channel (9), and the driven bevel gear (5) is driven by a driving component.

3. The positive pressure reset screw-liquid conversion gap adjustment device according to claim 2, characterized in that: The driving assembly comprises a driving bevel gear (3); a relief hole is provided on the frame (1); the driving bevel gear (3) is rotatably connected in the relief hole via a bearing (4); an adjusting motor (2) is mounted on the frame (1); the output shaft of the adjusting motor (2) is connected to the driving bevel gear (3); and the driving bevel gear (3) is meshed with the driven bevel gear (5).

4. The positive pressure reset screw-liquid conversion gap adjustment device according to claim 3 is characterized in that: A groove is provided at the bottom end of the frame (1), the groove being in communication with the vertical hole. A sealing cover (10) is fastened to the frame (1) by bolts, and the sealing cover (10) and the groove together enclose the positive pressure cavity flow channel (9).

5. The positive pressure reset screw-liquid conversion gap adjustment device according to claim 2, characterized in that: The oil cylinder rod (6) is provided with a vertical groove along the axial direction, and a guide pin (7) is connected to the inner wall of the vertical hole, and the guide pin (7) is slidably limited in the vertical groove.

6. The positive pressure reset screw-liquid conversion gap adjustment device according to claim 1, characterized in that: The end thread sealing connection of the transverse hole is provided with a collar, the collar sliding sealing sleeve is provided on the fixed column (11), a plurality of annular grooves are provided on the fixed column (11), a sealing ring (8) is fixedly provided on the annular groove, and the fixed column (11) is sealed with the inner wall of the transverse hole through the sealing ring (8).

7. The positive pressure reset screw-liquid conversion gap adjustment device according to claim 1, characterized in that: The gas pressure reset device comprises a pressure regulating component, a fixed column back-pressure cavity (14) is provided on the outer wall of the middle portion of the fixed column (11) along the circumferential direction, a frame flow channel (13) is provided on the frame (1) along the vertical direction, the frame flow channel (13) is communicated with the fixed column back-pressure cavity (14), one end of the pressure regulating component is communicated with the frame flow channel (13) through an air pipe (15), and the other end of the pressure regulating component is communicated with a compressed gas source.

8. The positive pressure reset screw-liquid conversion gap adjustment device according to claim 7, characterized in that: The pressure regulating component is a pressure regulating valve (16).

9. According to the positive pressure reset screw-liquid conversion gap adjustment device according to claim 2, the top end of the frame (1) is fastened with a pressure cover (12) by bolts, and the pressure cover (12) is used to close the avoidance groove.

10. According to the positive pressure reset screw-liquid conversion gap adjustment device according to claim 2, the outer wall of the bottom end of the cylinder rod (6) is provided with a plurality of annular sealing grooves along the circumferential direction, and the sealing ring (8) is arranged in the annular sealing groove, and the cylinder rod (6) is sealed with the vertical hole through the sealing ring (8).

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