A servo up valve mechanism for MDI valve

Abstract

The utility model relates to valve mechanism technology field, concretely provides a kind of servo valve mechanism for MDI valve, including track entrance and valve, inlet valve track, transfer mechanism and outlet valve track, valve enters inside inlet valve track by track entrance, the lower end of inlet valve track is connected with transfer mechanism, the outlet end of transfer mechanism is fixedly connected with outlet valve track, one end of outlet valve track is vertically connected with horizontal track, one end of horizontal track is connected with upper valve track assembly, the lower end of upper valve track assembly is connected with upper valve mechanism, inlet valve detection sensor is installed on inlet valve track, outlet valve detection sensor is installed on upper valve track assembly, transfer mechanism, inlet valve detection sensor, upper valve mechanism, outlet valve detection sensor are electrically connected with controller. The upper valve mechanism positioning accuracy is higher, improves production rhythm, and efficiency is higher, friction resistance reduces, greatly reduces the probability of valve sticking, reduces manual intervention and rework cost.

Description

Technical Field

[0001] This utility model relates to the technical field of valve upper mechanism, specifically to a servo valve upper mechanism suitable for MDI valves. Background Technology

[0002] Existing MDI (metered inhaler) valve assembly technology generally uses stepper motor drive combined with sliding friction track to achieve valve delivery and positioning. However, in practical applications, there are the following significant drawbacks: the stepper motor is prone to valve positioning deviation due to step loss or sliding friction, making it difficult to achieve high-precision positioning and affecting product qualification rate; the valve delivery and valve installation actions need to be completed asynchronously, resulting in slow production cycle and further reducing overall production efficiency; the track is prone to high sliding friction resistance due to dust or wear, leading to problems such as poor stability, high failure rate, and poor compatibility.

[0003] Therefore, it is necessary to provide a servo-driven upper valve mechanism suitable for MDI valves to solve the above-mentioned technical problems. Utility Model Content

[0004] The technical problem to be solved by this utility model is that in the prior art, valve positioning deviation, slow production cycle, and high sliding friction resistance caused by dust or wear on the track lead to poor stability, high failure rate, and poor compatibility.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: it includes a track inlet and a valve, an inlet valve track, a transfer mechanism, and an outlet valve track. The valve enters the interior of the inlet valve track through the track inlet. The lower end of the inlet valve track is connected to the transfer mechanism. The outlet end of the transfer mechanism is fixedly connected to the outlet valve track. One end of the outlet valve track is vertically connected to a transverse track. One end of the transverse track is connected to an upper valve track assembly. The lower end of the upper valve track assembly is connected to an upper valve mechanism. An inlet valve detection sensor is installed on the inlet valve track. An outlet valve detection sensor is installed on the upper valve track assembly. The transfer mechanism, the inlet valve detection sensor, the upper valve mechanism, and the outlet valve detection sensor are all electrically connected to the controller.

[0006] As a preferred embodiment of this utility model, the transfer mechanism includes a turning track, a frame, a servo motor, and a valve feed star wheel. The upper end of the turning track is connected to the inlet valve track and the outlet valve track, respectively. A frame is fixedly installed on one side of the turning track, and a servo motor is fixedly installed on the frame. The output end of the servo motor is coaxially connected to the valve feed star wheel.

[0007] As a preferred embodiment of the present invention, the upper valve track assembly includes a straight section track and an inclined section track, wherein the straight section track is provided with a deceleration inclined track.

[0008] As a preferred embodiment of this utility model, the upper valve mechanism includes a base, a valve stop block, an upper valve cylinder, a hammer guide column, and an upper valve hammer. The base is fixedly connected to the lower end of the inclined section track. Two symmetrical pivot pins are fixedly installed inside the base, and valve stops are rotatably connected to both pivot pins. An upper valve cylinder is installed at the upper end of the base. The output end of the upper valve cylinder is coaxially connected to the hammer guide column, and the lower end of the hammer guide column is fixedly connected to the upper valve hammer.

[0009] As a preferred embodiment of this utility model, the two valve blocks are disposed on both sides of the upper valve hammer, and a rotating bearing is installed on the inner side of each of the two valve blocks.

[0010] As a preferred embodiment of this utility model, the lower end of the upper valve hammer is tapered.

[0011] Compared with related technologies, the servo upper valve mechanism for MDI valves provided by this utility model has the following advantages:

[0012] An external vibratory feeder or screening mechanism smoothly transports the valves to the inlet rail, where they enter the valve inlet rail. A certain number of valves accumulate on the inlet rail. At this point, the inlet valve detection sensor sends an accumulation signal to the controller. With a sensing time of 0.5 seconds, the servo motor receives the signal and begins operation, driving the valve delivery star wheel to rotate at a uniform speed to transfer the valves. The valves then move through the outlet rail to the transverse rail, and from the transverse rail to the upper valve rail assembly. The upper valve rail assembly includes a straight section and an inclined section. The straight section has a deceleration ramp, where the valves naturally decelerate, avoiding excessive pressure on the straight section. The track section deforms due to rapid descent under gravity and eventually enters the base. The inclined track sections accumulate and stack a certain amount. When the sensing time reaches 0.5s, the valve detection sensor sends an accumulation signal to the controller. The upper valve cylinder receives the signal and starts working, driving the upper valve hammer and hammer guide column to move downward together. When the upper valve hammer contacts the valve in the base, the hammer guide column continues to descend, and the upper valve hammer contacts the rotating bearing. The lower end of the upper valve hammer is conical. The upper valve hammer descends until it opens the valve stop. Finally, the upper valve hammer continues to press down on the valve, locking the valve onto the MDI aerosol can.

[0013] The upper valve mechanism achieves higher valve positioning accuracy through the precise transmission of the valve feeding star wheel in conjunction with the servo motor. The coordinated detection of the inlet valve detection sensor and the outlet valve detection sensor enables one-to-one feeding, improving production cycle time and efficiency. The cooperation of the hammer guide column, upper valve hammer and rotating bearing reduces frictional resistance, greatly reducing the probability of valve jamming, reducing manual intervention and rework costs, and making the mechanism more stable, with a lower failure rate and better compatibility. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a front view of the present invention;

[0017] Figure 3 This is a partial schematic diagram of point A in this utility model;

[0018] Figure 4 This is a partial schematic diagram of part B of the present invention.

[0019] The diagram is labeled as follows: 1. Track inlet; 2. Valve; 3. Valve inlet track; 4. Transfer mechanism; 41. Turning track; 42. Platform; 43. Servo motor; 44. Valve delivery star wheel; 5. Valve outlet track; 6. Lateral track; 7. Upper valve track assembly; 71. Straight section track; 72. Inclined section track; 73. Deceleration ramp; 8. Upper valve mechanism; 81. Base; 82. Valve stop block; 83. Upper valve cylinder; 84. Hammer guide column; 85. Upper valve hammer; 86. Rotating pin; 87. Rotating bearing; 9. Valve inlet detection sensor; 10. Valve outlet detection sensor. Detailed Implementation

[0020] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model. Example

[0021] like Figure 1-4As shown, this utility model discloses a servo valve upper mechanism suitable for MDI valves, including a track inlet 1, a valve 2, an inlet valve track 3, a transfer mechanism 4, and an outlet valve track 5. The valve 2 enters the inlet valve track 3 through the track inlet 1. The lower end of the inlet valve track 3 is connected to the transfer mechanism 4, and the outlet end of the transfer mechanism 4 is fixedly connected to the outlet valve track 5. The valve 2 enters the transfer mechanism 4 through the inlet valve track 3 and is transferred to the outlet valve track 5 by the transfer mechanism 4. One end of the outlet valve track 5 is vertically connected to a transverse track 6, and one end of the transverse track 6 is connected to an upper valve track assembly 7. The lower end of the upper valve track assembly 7 is connected to an upper valve mechanism 8. The valve 2 passes through the outlet valve track 5, the transverse track 6, and the upper valve track assembly 7 in sequence and finally enters the upper valve mechanism 8. An inlet valve detection sensor 9 is installed on the inlet valve track 3, and an outlet valve detection sensor 10 is installed on the upper valve track assembly 7. The transfer mechanism 4, the inlet valve detection sensor 9, the upper valve mechanism 8, and the outlet valve detection sensor 10 are all electrically connected to the controller.

[0022] Furthermore, the transfer mechanism 4 includes a turning track 41, a frame 42, a servo motor 43, and a valve delivery star wheel 44. The upper end of the turning track 41 is connected to the inlet valve track 3 and the outlet valve track 5, respectively. The valve 2 enters the turning track 41 through the inlet valve track 3. The frame 42 is fixedly installed on one side of the turning track 41, and the servo motor 43 is fixedly installed on the frame 42. The output end of the servo motor 43 is coaxially connected to the valve delivery star wheel 44. The servo motor 43 drives the valve delivery star wheel 44 to rotate at a constant speed, conveying the valve 2 to the outlet valve track 5 in sequence. The valve 2 accumulates on the inlet valve track. When valve 2 is in position 3, the inlet valve detection sensor 9 sends an accumulation signal to the controller. The servo motor 43 receives the signal and starts working, driving the valve delivery star wheel 44 to rotate at a constant speed to transfer valve 2. Then, it moves through the outlet valve track 5 to the transverse track 6, and then from the transverse track 6 to the upper valve track assembly 7. The upper valve track assembly 7 includes a straight section track 71 and an inclined section track 72. The straight section track 71 is provided with a deceleration ramp 73. Valve 2 enters the deceleration ramp 73 for natural deceleration, avoiding deformation due to rapid falling under gravity on the straight section track 71. Finally, it enters the upper valve mechanism 8 through the inclined section track 72.

[0023] The upper valve mechanism 8 includes a base 81, valve blocks 82, an upper valve cylinder 83, a hammer guide post 84, and an upper valve hammer 85. The base 81 is fixedly connected to the lower end of the inclined track 72. Two symmetrical pivot pins 86 are fixedly installed inside the base 81, and valve blocks 82 are rotatably connected to both pivot pins 86. The upper valve cylinder 83 is installed at the upper end of the base 81. The output end of the upper valve cylinder 83 is coaxially connected to the hammer guide post 84. The lower end of the hammer guide post 84 is fixedly connected to the upper valve hammer 85. Two valve blocks 82 are located on both sides of the upper valve hammer 85. Rotary bearings 87 are installed on the inner side of both valve blocks 82. After valve 2 enters the base 81, valve stop 82 limits and blocks valve 2, causing valve 2 to accumulate on valve detection sensor 10. Valve detection sensor 10 sends an accumulation signal to the controller, and upper valve cylinder 83 receives the signal and starts working, driving upper valve hammer 85 and hammer guide column 84 to move downward together. When upper valve hammer 85 contacts valve 2, hammer guide column 84 continues to move downward, and upper valve hammer 85 contacts rotating bearing 87. The lower end of upper valve hammer 85 is conical. Upper valve hammer 85 moves downward until it opens valve stop 82, and finally upper valve hammer 85 presses down on valve 2, locking valve 2 onto the MDI aerosol can.

[0024] In use, this technical solution involves an external vibratory feeder or screening mechanism smoothly conveying valve 2 to the track inlet 1, where it enters the valve inlet track 3. A certain number of valve 2s accumulate on the inlet track 3. At this point, the inlet valve detection sensor 9 sends an accumulation signal to the controller. With a sensing time of 0.5 seconds, the servo motor 43 receives the signal and begins operation, driving the valve delivery star wheel 44 to rotate at a uniform speed to transfer the valve 2. The valve 2 then moves through the outlet track 5 to the transverse track 6, and from there to the upper valve track assembly 7. The upper valve track assembly 7 includes a straight section track 71 and an inclined section track 72. The straight section track 71 is equipped with a deceleration ramp 73. Valve 2 enters the deceleration ramp 73 for natural deceleration, avoiding... The straight section of track 71 deforms due to rapid descent under gravity and eventually enters the base 81, while the inclined section of track 72 accumulates and stacks a certain amount. When the sensing time reaches 0.5s, the valve detection sensor 10 sends an accumulation signal to the controller. The upper valve cylinder 83 receives the signal and starts working, driving the upper valve hammer 85 and the hammer guide column 84 to move downward together. When the upper valve hammer 85 contacts the valve 2 in the base 81, the hammer guide column 84 continues to descend, and the upper valve hammer 85 contacts the rotating bearing 87. The lower end of the upper valve hammer 85 is conical. The upper valve hammer 85 descends until it opens the valve stop 82. Finally, the upper valve hammer 85 continues to press down on the valve 2, locking the valve 2 onto the MDI aerosol can.

[0025] The upper valve mechanism achieves higher valve positioning accuracy through the precise transmission of the servo motor 43 and the valve feeding star wheel 44. The coordinated detection of the inlet valve detection sensor 9 and the outlet valve detection sensor 10 enables one-to-one feeding, improving production cycle time and efficiency. The cooperation of the hammer guide column 84, the upper valve hammer 85, and the rotating bearing 87 reduces frictional resistance, greatly reducing the probability of valve jamming, reducing manual intervention and rework costs, and making the mechanism more stable, with a lower failure rate and better compatibility.

[0026] 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, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A servo-driven upper valve mechanism suitable for MDI valves, characterized in that: The system includes a track inlet (1) and a valve (2), an inlet valve track (3), a transfer mechanism (4), and an outlet valve track (5). The valve (2) enters the inlet valve track (3) through the track inlet (1). The lower end of the inlet valve track (3) is connected to the transfer mechanism (4). The outlet end of the transfer mechanism (4) is fixedly connected to the outlet valve track (5). One end of the outlet valve track (5) is vertically connected to a transverse track (6). One end of the transverse track (6) is connected to an upper valve track assembly (7). The lower end of the upper valve track assembly (7) is connected to an upper valve mechanism (8). An inlet valve detection sensor (9) is installed on the inlet valve track (3). An outlet valve detection sensor (10) is installed on the upper valve track assembly (7). The transfer mechanism (4), the inlet valve detection sensor (9), the upper valve mechanism (8), and the outlet valve detection sensor (10) are all electrically connected to the controller.

2. The servo upper valve mechanism suitable for MDI valves according to claim 1, characterized in that, The transfer mechanism (4) includes a turning track (41), a frame (42), a servo motor (43), and a valve feed star wheel (44). The upper end of the turning track (41) is connected to the inlet valve track (3) and the outlet valve track (5), respectively. The frame (42) is fixedly installed on one side of the turning track (41), and the servo motor (43) is fixedly installed on the frame (42). The output end of the servo motor (43) is coaxially connected to the valve feed star wheel (44).

3. A servo-driven upper valve mechanism suitable for MDI valves according to claim 1, characterized in that, The upper valve track assembly (7) includes a straight section track (71) and an inclined section track (72), and the straight section track (71) is provided with a deceleration ramp (73).

4. A servo-driven upper valve mechanism suitable for MDI valves according to claim 3, characterized in that, The upper valve mechanism (8) includes a base (81), a valve stop (82), an upper valve cylinder (83), a hammer guide column (84), and an upper valve hammer (85). The base (81) is fixedly connected to the lower end of the inclined section track (72). Two symmetrical pivot pins (86) are fixedly installed inside the base (81). The valve stop (82) is rotatably connected to both pivot pins (86). The upper valve cylinder (83) is installed at the upper end of the base (81). The output end of the upper valve cylinder (83) is coaxially connected to the hammer guide column (84). The lower end of the hammer guide column (84) is fixedly connected to the upper valve hammer (85).

5. A servo-driven upper valve mechanism suitable for MDI valves according to claim 4, characterized in that, Two valve stops (82) are disposed on both sides of the upper valve hammer (85), and a rotating bearing (87) is installed on the inner side of each of the two valve stops (82).

6. A servo-driven upper valve mechanism suitable for MDI valves according to claim 5, characterized in that, The lower end of the upper valve hammer (85) is conical.

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