An automated device for dosing a liquid

Abstract

The application relates to the field of aerospace technology, and particularly discloses an automatic device for quantitatively pouring liquid, which comprises a rack, a turnover mechanism and an uncapping mechanism. The turnover mechanism comprises a driving device and a clamp assembly. The clamp assembly is rotatably arranged on the rack through a rotating shaft. The driving device is fixed on the rack, and the output end of the driving device is connected with the clamp assembly. The uncapping mechanism is arranged on the rack and located above the clamp assembly. A hopper is slidably arranged on the rack. The application has the advantages of overcoming the defects of the prior art, i.e. the accuracy of pouring liquid can be improved, the safety of workers can be ensured, and the labor cost can be reduced to a certain extent.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of aerospace technology, in particular to an automatic device for quantitatively pouring liquid. BACKGROUND

[0002] There are many kinds of aerospace gel propellants, such as liquid propellants, solid propellants, inert propellants, and ion propellants. The present application mainly aims at liquid propellants (hydrogen peroxide gel propellants), because hydrogen peroxide is non-toxic, inexpensive, and easy to maintain, and the non-toxicity of propellants is an inevitable trend of space development. However, the concentration of the propellant itself is higher than 10%, which makes it flammable and explosive. Workers cannot accurately measure the precise value of the liquid during operation, and it also increases the risk coefficient. SUMMARY

[0003] The purpose of the present application is to overcome the shortcomings of the prior art and provide an automatic device for quantitatively pouring liquid.

[0004] The purpose of the present application is achieved by the following technical solution: an automatic device for quantitatively pouring liquid, comprising a rack, a turnover mechanism and a cap opening mechanism, the turnover mechanism comprising a driving device and a clamp assembly, the clamp assembly being rotatably arranged on the rack through a rotating shaft, the driving device being fixed on the rack, and the output end of the driving device being connected with the clamp assembly, the cap opening mechanism being arranged on the rack and located above the clamp assembly, and a hopper being slidably arranged on the rack.

[0005] Specifically, the clamp assembly comprises a base, a fixed column and an upper connecting frame, the upper connecting frame being in U-shaped structure, a plurality of fixed columns being connected between the upper connecting frame and the base, the base being in annular structure, a plurality of lower limit blocks being arranged in an array on the inner side of the base, a plurality of upper limit blocks being uniformly arranged on the inner side of the upper connecting frame, and an axial limit frame being hinged to the end of the upper connecting frame.

[0006] Specifically, the axial limit frame comprises two support arms, a cantilever and a pressing block, the two support arms being arranged at both ends of the cantilever, one end of each of the two support arms being hingedly connected with the end of the upper connecting frame at both ends, and the pressing block being arranged at the bottom of the middle of the cantilever.

[0007] Specifically, a connecting column is arranged on the end of the upper connecting frame at both ends, and a bayonet is arranged on the support arm corresponding to the connecting column.

[0008] Specifically, the driving device comprises a stepping motor and a speed reducer, the output end of the stepping motor being connected with the input end of the speed reducer, and the output end of the speed reducer being connected with the upper connecting frame through a shaft coupling.

[0009] Specific, the cover opening mechanism includes power device, screw rod, screw nut, sliding sleeve and rubber ring, the rack is provided with a fixed plate, the screw nut is fixed on the fixed plate, the screw rod is in threaded connection with the screw nut, the upper end of the screw rod is in transmission connection with the power device, the lower end of the screw rod is connected with the sliding sleeve, the rubber ring is arranged in the sliding sleeve, the fixed plate is provided with an optical axis fixing seat, the optical axis fixing seat is slidably connected with an optical axis, and the upper end of the optical axis is connected with the power device.

[0010] Specific, the cover opening mechanism further includes a moving seat, the sliding sleeve is rotatably arranged in the moving seat, the screw rod is connected with the sliding sleeve through a one-way bearing, the moving seat is provided with a cooperation ring above the sliding sleeve, the top of the sliding sleeve is provided with a guide hole, and the top of the rubber ring is provided with a guide column, and the guide column is slidably connected with the guide hole.

[0011] Specific, the top of the cooperation ring is provided with a guide rod, the upper end of the guide rod penetrates through the moving seat and is slidably connected with the moving seat, the top of the guide rod is provided with a limiting ring, the guide rod is provided with a spring, one end of the spring abuts against the limiting ring, and the other end of the spring abuts against the moving seat.

[0012] Specific, the lower end of the sliding sleeve is a tapered hole, the upper end of the rubber ring is tapered, and the upper end of the rubber ring is matched with the tapered hole of the sliding sleeve.

[0013] Specific, the rubber ring comprises a plurality of arc-shaped blocks, and the arc-shaped blocks are spliced to form the rubber ring, and the inner side circumferential array of the arc-shaped blocks is provided with a convex.

[0014] The present application has the following advantages:

[0015] 1、the cover opening mechanism of the present application is movable, the speed reducer drives the screw rod to work, drives the moving seat to move downward, when the moving seat touches the bottle cap, the rubber ring in the interior will contact and hold the bottle cap through the specific structure in the interior.

[0016] 2, The step motor of the present application works, and the force is transmitted to the speed reducer, the speed reducer is connected to the shaft coupling, the shaft coupling transmits the force to the hoop assembly, the hoop assembly drives the fixed bottle to shake and pour, in the shaking process, the motor speed needs to be controlled at 110r / min, and the forward and reverse rotation of the motor also needs to be controlled, so that the liquid in the bottle is fully shaken, in the process of pouring liquid, it is necessary to ensure the quantitative pouring of liquid, this process needs the real-time monitoring of the weighing sensor to the liquid in the bottle, and the measured data is transmitted to the control system, the control system adjusts in time through the obtained data, so as to achieve the purpose of quantitative pouring of liquid, the present application overcomes the shortcomings of the prior art, that is, it can improve the accuracy of pouring liquid, and can ensure the safety of workers. To a certain extent, it also reduces the labor cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 For the structural diagram of the present application;

[0018] Figure 2 For the structural diagram of the hoop assembly of the present application;

[0019] Figure 3 For the assembly structure diagram of the hoop assembly and the bottle of the present application;

[0020] Figure 4 For the structure diagram of the cover opening mechanism of the present application;

[0021] Figure 5 For the internal structure diagram of the moving seat of the present application;

[0022] Figure 6 For the cross-sectional structure diagram of the cover opening mechanism of the present application;

[0023] Figure 7 For the structure diagram of the rubber ring of the present application;

[0024] In the figure: 1- rack, 2- drive device, 3- hoop assembly, 31- base, 32- upper connecting frame, 33- fixed column, 34- lower limit block, 35- upper limit block, 36- support arm, 37- cantilever, 38- pressing block, 39- bayonet, 310- connecting column, 4- cover opening mechanism, 41- screw rod, 42- power device, 43- fixed plate, 44- optical axis fixed seat, 45- optical axis, 46- screw rod nut, 47- sliding sleeve, 48- rubber ring, 49- cooperation ring, 410- guide rod, 411- guide column, 412- spring, 413- tool setting switch, 414- proximity switch, 415- moving seat, 416- one-way bearing, 5- incremental encoder, 6- funnel, 7- filling container, 8- bottle, 9- support plate, 10- support frame. DETAILED DESCRIPTION

[0025] For the purposes of the present application, the technical solutions and advantages will be clearer. The present application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and are not used to limit the present application, i.e., the described examples are only a part of the embodiments of the present application, but not all the embodiments. The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in various different configurations.

[0026] Therefore, the detailed description of the embodiments of the present application provided below in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0027] It should be noted that the relational terms such as "first" and "second" and the like are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed or inherent to such a process, method, article or apparatus. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article or apparatus including the element.

[0028] The present application will be further described below in combination with the drawings, but the scope of protection of the present application is not limited to the following.

[0029] As Figures 1-7As shown, an automatic device for quantitative pouring of liquid comprises a rack 1, a turnover mechanism and a cap opening mechanism 4, the turnover mechanism comprises a driving device 2 and a clamp assembly 3, the clamp assembly 3 is rotatably arranged on the rack 1 through a rotating shaft, the driving device 2 is fixed on the rack 1, and the output end of the driving device 2 is connected with the clamp assembly 3, the cap opening mechanism 4 is arranged on the rack 1 and above the clamp assembly 3, and a hopper 6 is slidably arranged on the rack 1. In this embodiment, the driving device 2 and the clamp assembly 3 are fixed on a support plate 9 through a support frame 10, then a plurality of weighing sensors are arranged at the bottom of the support plate 9, the plurality of weighing sensors are fixed on the rack 1, a bearing seat is arranged on the support frame 10, the rotating shaft is rotatably connected with one of the bearing seats, the output end of the driving device 2 is also rotatably connected with the bearing seat, an incremental encoder 5 is arranged on the rotating shaft, and the bottle 8 needs to be manually placed on the clamp assembly 3 during use. After the bottle 8 is fixed, the bottle 8 needs to be shaken, because the liquid in the bottle 8 is hydrogen peroxide gel propellant, which needs to be mixed, the driving device 2 is remotely controlled to work, power is transmitted to the clamp assembly 3, the clamp assembly 3 drives the bottle to rotate clockwise by 360°, and then rotates counterclockwise by 360° again, the rotation speed is 110 r / min, so as to ensure that the liquid in the bottle 8 can be mixed uniformly, then the cap opening mechanism 4 is operated to open the bottle, after the cap is unscrewed, the cap opening mechanism 4 returns to the original position, the driving device 2 starts to work again to drive the bottle 8 to pour liquid, and the weighing sensor needs to monitor the liquid in the bottle 8 in real time during the liquid pouring process; the liquid needs to be poured according to the actual required liquid, the weight measured by the weighing sensor is fed back to the control system, the control system adjusts according to the received signal to control the rotation speed of the driving device 2, and then controls the pouring speed, the incremental encoder 5 is arranged on the rotating shaft to monitor the rotation speed of the rotating shaft in real time, in order to prevent the liquid from splashing during pouring, the initial speed needs to be slow, and the hopper 6 is arranged to prevent the liquid from splashing, the hopper 6 can move on the rack 1, the purpose is to avoid the phenomenon of interference with the clamp assembly 3 during shaking, the incremental encoder 5 monitors the rotation speed of the stepping motor output in real time, the weighing sensor feeds back the liquid mass corresponding to each moment during pouring to the control system, the control system adjusts through the feedback data, and then adjusts the rotation speed of the bottle 8 for pouring liquid through the feedback rotation speed of the rotating shaft of the incremental encoder 5, so as to reach the predetermined value.

[0030] Further, the hoop assembly 3 comprises a base 31, fixing columns 33 and an upper connecting frame 32, the upper connecting frame 32 is in U-shaped structure, the upper connecting frame 32 is connected with the base 31 through the fixing columns 33, the base 31 is in ring structure, a plurality of lower limiting blocks 34 are arranged on the inner side of the base 31 in array, a plurality of upper limiting blocks 35 are uniformly arranged on the inner side of the upper connecting frame 32, and the end of the upper connecting frame 32 is hinged with an axial limiting frame. In this embodiment, when the bottle 8 is placed, the bottle 8 is placed from the side into the U-shaped opening of the upper connecting frame 32, the base 31 is in ring structure, a plurality of lower limiting blocks 34 are arranged on the inner side, the bottle 8 is placed on the base 31 and clamped on the plurality of lower limiting blocks 34, the lower limiting blocks 34 limit the periphery of the bottom of the bottle 8, then the axial limiting frame is rotated to abut against the bottle 8, so that the upper end of the bottle 8 abuts against the plurality of upper limiting blocks 35, the axial limiting frame limits the circumferential direction and the axial direction of the bottle 8, so that the bottle 8 is fixed on the hoop assembly 3.

[0031] Further, the axial limiting frame comprises two supporting arms 36, a cantilever 37 and a pressing block 38, the two supporting arms 36 are arranged at the two ends of the cantilever 37, one end of each of the two supporting arms 36 is hinged with the end of the upper connecting frame 32 at the two ends, the pressing block 38 is arranged at the bottom of the middle of the cantilever 37, a connecting column 310 is arranged on the end of the upper connecting frame 32 at the two ends, and a bayonet 39 is arranged on the supporting arm 36 corresponding to the connecting column 310. In this embodiment, the supporting arm 36 is rotated around the hinge between the end of the upper connecting frame 32, so that the cantilever 37 is driven to rotate, and then the pressing block 38 is pressed on the bottle 8, one end of the connecting column 310 is in ball head structure, one end of the connecting column 310 is hinged with the upper connecting frame 32 through the ball head structure, threads are arranged on the connecting column 310, after the supporting arm 36 is rotated to the position, the connecting column 310 is clamped in the bayonet 39, and then a nut is threadedly connected on the connecting column 310, so that the supporting arm 36 is limited and connected on the upper connecting frame 32.

[0032] Further, the driving device comprises a stepping motor and a speed reducer, the output end of the stepping motor is connected with the input end of the speed reducer, and the output end of the speed reducer is connected with the upper connecting frame 32 through a shaft coupling. In this embodiment, the stepping motor is reduced in speed through the speed reducer, the rotation speed output by the stepping motor through the speed reducer should not be lower than 110r / min, and the rotation speed should not be too high, otherwise the motor output torque is small, and the bottle 8 cannot be rotated. The stepping motor 6 is first rotated forward by 360°, and then is rotated reversely by 360°, so that the liquid in the bottle 8 is fully shaken.

[0033] Further, the uncapping mechanism 4 comprises a power device 42, a screw rod 41, a screw nut 46, a sliding sleeve 47 and a rubber ring 48. The rack 1 is provided with a fixed plate 43. The screw nut 46 is fixed on the fixed plate 43. The screw rod 41 is threadedly connected with the screw nut 46. The upper end of the screw rod 41 is drivingly connected with the power device 42. The lower end of the screw rod 41 is connected with the sliding sleeve 47. The rubber ring 48 is arranged in the sliding sleeve 47. The fixed plate 43 is provided with an optical axis fixing seat 44. The optical axis fixing seat 44 is slidingly connected with an optical axis 45. The upper end of the optical axis 45 is connected with the power device 42. The screw rod 41 is connected with the sliding sleeve 47 through a one-way bearing 416. In the embodiment, the power device 42 comprises a speed reducer, a gear box and a gear. The output end of the speed reducer is drivingly connected with the screw rod through the gear. The gear is arranged in the gear box. The upper end of the optical axis 45 is connected with the gear box. After the liquid in the bottle 8 is shaken, the bottle 8 is reset. Then the speed reducer is controlled to work. The working speed reducer drives the screw rod 41 to rotate. Since the screw nut 46 is fixed on the fixed plate 43, the screw rod 41 moves axially to drive the gear box and the speed reducer to move together. The bottom of the screw rod 41 is provided with the sliding sleeve 47. The rubber ring 48 is arranged in the sliding sleeve 47. When the screw rod 41 moves axially downward, the rubber ring 48 is contacted with the bottle cap on the bottle 8. The rubber ring 48 is compressed upward together with the bottle cap. Due to the action of the one-way bearing 416, the rubber ring 48 does not rotate with the bottle cap, but holds the bottle cap tightly. Then the speed reducer is controlled to rotate reversely. The screw rod 41 rotates upward. Due to the action of the one-way bearing 416, the screw rod 41 rotates upward to drive the sliding sleeve 47 to rotate. Thus the sliding sleeve 47 can drive the rubber ring 48 to rotate the bottle cap.

[0034] Further, the cover opening mechanism 4 further comprises a moving seat 415, the sliding sleeve 47 is rotatably arranged in the moving seat 415, a cooperation ring 49 is arranged above the sliding sleeve 47 in the moving seat 415, a guide hole is arranged on the top of the sliding sleeve 49, a guide column 411 is arranged on the top of the rubber ring 48, the guide column 411 is slidably connected with the guide hole, a guide rod 410 is arranged on the top of the cooperation ring 49, the upper end of the guide rod 410 penetrates through the moving seat 415 and is slidably connected with the moving seat 415, a limiting ring is arranged on the top of the guide rod 410, a spring 412 is arranged on the guide rod 410, one end of the spring 412 abuts against the limiting ring and the other end abuts against the moving seat 415. In the embodiment, a proximity switch 414 is arranged on the fixed plate 43, when the screw rod 41 is driven by the reduction motor to move downward along the axial direction, the gear box touches the proximity switch 414, the reduction motor starts to reverse, the bottle cap is unscrewed, then the screw rod 41 continues to move upward, the guide rod 410 touches the fixed plate 43, because the fixed plate 43 is limitedly connected with the cooperation ring 49, the cooperation ring 49 touches the guide column 411, the guide column 411 abuts against the rubber ring 48, the rubber ring 48 is subjected to a downward force and moves downward, the bottle cap is naturally dropped down without the holding force of the rubber ring 48, when the tool setting switch 413 touches the fixed plate 43, the reduction motor stops working. The main design advantages of the bottle opener are that only one reduction motor 2 is needed for driving; the one-way bearing 416 solves the problem that the bottle cap is not continuously tightened during the downward movement of the screw rod 41; when the bottle cap is held and moves upward, the bottle cap can be naturally dropped down without manual taking.

[0035] Further, the lower end of the inside of the sliding sleeve 47 is a tapered hole, the upper end of the outside of the rubber ring 48 is tapered, the upper end of the rubber ring 48 is matched with the tapered hole of the sliding sleeve 47, the rubber ring 48 comprises a plurality of arc-shaped blocks 481, the arc-shaped blocks 481 are spliced to form the rubber ring 48, and the inner side circumferential array of the arc-shaped blocks 481 is provided with a protrusion. In the embodiment, the inner hole of the sliding sleeve 47 is designed as a tapered structure, the outside of the rubber ring 48 is also designed as a tapered structure, when the screw rod 41 moves downward, the rubber ring 48 is pressed on the bottle cap, the bottle cap is arranged in the rubber ring 48, at this time, the tapered structure of the rubber ring 48 is matched with the tapered hole of the sliding sleeve 47 to press the rubber ring 48 into the sliding sleeve 47, so that the bottle cap can be held, because the protrusion is arranged in the rubber ring 48, the friction with the bottle cap can be increased, so that the rubber ring 48 can be prevented from slipping with the bottle cap, then the rubber ring 48 is designed as a plurality of arc-shaped blocks 481, the arc-shaped blocks 481 are independent and not connected with each other, so that the rubber ring 48 can be deformed when being pressed into the sliding sleeve 47 and hold the bottle cap.

[0036] In the present application, the positioning block is positioned on the rack 1, the positioning switch is arranged on the positioning block, the filling container 7 is abutted against the positioning block, and then the multiple positioning switches are triggered to determine that the filling container 7 is placed in place.

[0037] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Any person skilled in the art can make many possible changes, modifications and modifications to the technical solution of the present application without departing from the scope of the technical solution of the present application, or modify equivalent embodiments with equivalent changes. Therefore, any modification, modification, equivalent change and modification of the above embodiments made by the technical personnel according to the technical solution of the present application, which does not deviate from the technical solution of the present application, belongs to the protection scope of the technical solution.

Claims

1. An automated device for dosing and pouring a liquid, characterized in that: The utility model provides a bottle cap opening and closing device, including frame (1), turnover mechanism and uncover mechanism (4), turnover mechanism includes drive arrangement (2) and hoop assembly (3), hoop assembly (3) is rotatory and is arranged on frame (1) through pivot, drive arrangement (2) is fixed on frame (1), and the output end of drive arrangement (2) is connected with hoop assembly (3), uncover mechanism (4) is arranged on frame (1), and is located the top of hoop assembly (3), and the funnel (6) of sliding is provided on frame (1); The uncover mechanism (4) includes a power device (42), a lead screw (41), a lead screw nut (46), a sliding sleeve (47), and a rubber ring (48). The frame (1) is provided with a fixed plate (43). The lead screw nut (46) is fixed on the fixed plate (43). The lead screw (41) is in threaded connection with the lead screw nut (46). The upper end of the lead screw (41) is in transmission connection with the power device (42). The lower end of the lead screw (41) is connected with the sliding sleeve (47). The rubber ring (48) is arranged in the sliding sleeve (47). The fixed plate (43) is provided with an optical axis fixing seat (44). The optical axis fixing seat (44) is slidably connected with an optical axis (45). The upper end of the optical axis (45) is connected with the power device (42). The uncover mechanism (4) further includes a moving seat (415). The sliding sleeve (47) is rotatably arranged in the moving seat (415). The lead screw (41) is connected with the sliding sleeve (47) through a one-way bearing (416). The one-way bearing (416) is used to prevent the bottle cap from being continuously tightened when the lead screw (41) moves downward. The moving seat (415) is provided with a cooperation ring (49) above the sliding sleeve (47). The top of the sliding sleeve (47) is provided with a guide hole. The top of the rubber ring (48) is provided with a guide column (411). The guide column (411) is slidably connected with the guide hole. The top of the cooperation ring (49) is provided with a guide rod (410). The upper end of the guide rod (410) penetrates through the moving seat (415) and is slidably connected with the moving seat (415). The top of the guide rod (410) is provided with a limiting ring. The guide rod (410) is provided with a spring (412). One end of the spring (412) abuts against the limiting ring, and the other end abuts against the moving seat (415). The lower end of the sliding sleeve (47) is a tapered hole. The upper end of the rubber ring (48) is tapered. The upper end of the rubber ring (48) is matched with the tapered hole of the sliding sleeve (47).

2. An automated device for dosing and pouring liquids according to claim 1, characterized in that: The hoop assembly (3) comprises a base (31), a fixing column (33) and an upper connecting frame (32), the upper connecting frame (32) is a U-shaped structure, the upper connecting frame (32) and the base (31) are connected through a plurality of fixing columns (33), the base (31) is an annular structure, a plurality of lower limiting blocks (34) are arranged in an array on the inner side of the base (31), a plurality of upper limiting blocks (35) are uniformly arranged on the inner side of the upper connecting frame (32), and the end of the upper connecting frame (32) is hingedly connected with an axial limiting frame.

3. An automated device for dosing and pouring liquids according to claim 2, characterized in that: The axial limiting frame comprises two supporting arms (36), a cantilever (37) and a pressing block (38), the two supporting arms (36) are arranged at the two ends of the cantilever (37), one end of each of the two supporting arms (36) is hingedly connected with the end of the upper connecting frame (32) at the two ends, and the pressing block (38) is arranged at the bottom of the middle of the cantilever (37).

4. An automated device for dosing and pouring liquids according to claim 3, characterized in that: A connecting column (310) is arranged on the end of the upper connecting frame (32) at the two ends, and a bayonet (39) is arranged on the supporting arm (36) corresponding to the connecting column (310).

5. The automated device for dosing and pouring liquids according to claim 2, characterized in that: The driving device comprises a stepping motor and a speed reducer, the output end of the stepping motor is connected with the input end of the speed reducer, and the output end of the speed reducer is connected with the upper connecting frame (32) through a shaft coupling.

6. The automated device for dosing and pouring liquids according to claim 1, characterized in that: The rubber ring (48) comprises a plurality of arc-shaped blocks (481), the arc-shaped blocks (481) are spliced to form the rubber ring (48), and the inner side of the arc-shaped block (481) is arranged in an array with a convex.

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