Pneumatic tube flow rotary three-station terminal workstation

Abstract

The present invention discloses a pneumatic flow rotary three-station terminal workstation, wherein the stator component comprises an upper and lower transmission tube, and the lower and upper ends of the upper and lower transmission tubes are respectively provided with upper and lower sealing rings; the rotor component comprises a transmission receiving tube between the upper and lower transmission tubes, and the upper and lower ends of the inner tube are respectively provided with upper and lower pressure plates, and the outer tube is installed on the left and right rotating shafts and arranged between the upper and lower pressure plates; the rotor driving component comprises a motor, a pulley transmission pair and a linkage mechanism, a rotating shaft is installed in a driven large pulley, and the driven large pulley is provided with upper and lower steel balls elastically embedded in the notch Ⅰ on the rotating shaft, and the linkage mechanism comprises a cam installed on the driven large pulley, and the upper and lower parts of the cam are provided with upper and lower connecting rods respectively installed on the upper and lower sealing rings, and the upper and lower sealing rings press the upper and lower connecting rods tightly in the upper and lower notches Ⅱ of the cam. The three stations of the present invention are flexibly changed, and the impact force can be reduced by buffering when receiving the transmission bottle.

Description

Technical Field

[0001] The invention relates to a pneumatic tube logistics transmission system, in particular to a pneumatic tube logistics rotary three-station terminal workstation. Background Art

[0002] The pneumatic tube logistics transmission system uses compressed air as its power, is automatically controlled by electromechanical and microcomputer technology, and transmits items through network pipelines, achieving safe and efficient item transmission between any two sending and receiving stations, eliminating the pain of workers running around, saving a lot of time, and improving work efficiency.

[0003] The terminal workstation is a common form of transceiver station in pneumatic logistics transmission systems. Currently, all terminal workstations mainly include lateral translation switching stations, rotational translation switching stations or S-bend rotation switching stations. The main disadvantage is that the equipment occupies a large space and the station conversion is not flexible, resulting in low pneumatic transmission efficiency. In addition, due to insufficient buffering, the inertia of the transmitted items can easily cause a huge impact on the workstation. Summary of the invention

[0004] In view of the deficiencies of the prior art, the technical problem to be solved by the present invention is to propose a pneumatic tube flow rotary three-station terminal workstation which has a compact structure, is flexible and can alleviate impact.

[0005] The pneumatic tube flow rotary three-station terminal workstation capable of solving the above technical problems includes a stator component, a rotor component and a rotor drive component, the difference being:

[0006] 1. The stator component comprises an upper transmission tube and a lower transmission tube, and the lower ends of the upper and lower transmission tubes are respectively provided with an upper sealing ring and a lower sealing ring which can slide axially.

[0007] 2. The rotor component includes a delivery receiving tube arranged between the upper and lower delivery tubes, the delivery receiving tube includes a coaxial inner tube and an outer tube, the upper and lower ends of the inner tube are respectively installed with an upper pressure plate and a lower pressure plate, the outer tube is installed on the left and right rotating shafts and is arranged between the upper and lower pressure plates, the upper and lower parts of the inner tube are provided with circumferentially evenly distributed air holes, each air hole at the upper end is provided with a small one-way skin valve to prevent air from flowing from the outer tube to the inner tube, a bottle holder is provided in the inner tube above each air hole at the lower end, through air holes are evenly distributed inside the bottle holder, and a large one-way skin valve is provided on the bottom holder to prevent air in the inner tube from flowing downward, so that when receiving the transmitted transmission bottle, an air blockage can be formed in the inner tube between the bottom of the transmission bottle and the bottle holder.

[0008] 3. The rotor driving component includes a pulley transmission pair driven by a motor and a linkage mechanism, a rotating shaft is coaxially installed in the driven large pulley of the pulley transmission pair, and the driven large pulley is provided with radially opposite and elastically embedded in the corresponding recess I on the rotating shaft. The linkage mechanism includes a cam coaxially installed on the driven large pulley, and the upper and lower parts of the cam are provided with an upper connecting rod and a lower connecting rod respectively installed on the upper and lower sealing rings. The upper and lower sealing rings press the ends of the upper connecting rod and the lower connecting rod into the radially opposite recesses II on the cam under the action of the corresponding upper and lower spring elements.

[0009] 4. A limiting mechanism is provided to limit the conveying and receiving tube to the vertical upper receiving position. At the upper receiving position, the rotating shaft stops rotating, the upper and lower steel balls are separated from the corresponding notch Ⅰ, the driven large pulley drives the cam to rotate 90°, the ends of the upper and lower connecting rods are embedded in the corresponding notch Ⅱ, and the upper and lower connecting rods drive the upper and lower sealing rings to be pressed on the upper and lower pressure plates to realize the docking between the upper transmission tube, the lower transmission tube and the conveying and receiving tube.

[0010] Furthermore, the upper and lower sealing rings are respectively installed on corresponding sliding guide mechanisms.

[0011] Furthermore, the pressing surface between each sealing ring and the corresponding pressure plate is a plane or an arc surface.

[0012] Beneficial effects of the present invention:

[0013] The pneumatic tube flow rotary three-station terminal workstation of the present invention has the characteristic of flexible transformation of the three stations. When receiving the transmitted transmission bottle, the impact force borne by the workstation can be reduced by buffering, thereby realizing more efficient pneumatic transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of an implementation mode of the present invention.

[0015] Figure 2 for Figure 1 Side view of an embodiment.

[0016] Figure 3(a) shows Figure 1 , Figure 2 Schematic diagram of the conveying receiving tube in the upper receiving station.

[0017] Figure 3(b) shows Figure 1 , Figure 2 Schematic diagram of the conveying and receiving tube in the bottle delivery position.

[0018] Figure 3(c) shows Figure 1 , Figure 2 Schematic diagram of the conveying and receiving pipe in the bottle unloading position.

[0019] Figure 4(a) shows Figure 1Schematic diagram of the profile of the cam in the embodiment.

[0020] Figure 4(b) shows Figure 1 A cross-sectional view of a rotating shaft in an embodiment.

[0021] Figure number identification: 1. Upper transmission tube; 2. Lower transmission tube; 3. Upper sealing ring; 4. Lower sealing ring; 5. Inner tube; 6. Outer tube; 7. Upper pressure plate; 8. Lower pressure plate; 9. Air vent; 10. Small one-way leather valve; 11. Bottle holder; 12. Sliding guide mechanism; 13. Large one-way leather valve; 14. Rotating shaft; 15. Motor; 16. Driven large pulley; 17. Cam; 18. Upper connecting rod; 19. Lower connecting rod; 20. Screw; 21. Steel ball; 22. Notch II; 23. Notch I; 24. Limit block; 25. Frame; 26. Elastic element; 27. Belt; 28. Active small pulley; 29. ​​Compression spring. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further described below in conjunction with the embodiments shown in the accompanying drawings.

[0023] The pneumatic flow rotary three-station terminal workstation of the present invention includes a stator component, a rotor component and a rotor driving component arranged based on a frame 25. The frame 25 is a vertical square frame including left and right side panels and upper and lower panels. The front and rear sides of the square frame are open structures.

[0024] The stator component includes an upper transmission tube 1 and a lower transmission tube 2. The tube body of the upper transmission tube 1 is vertically installed on the upper panel of the frame 25. The tube body of the lower transmission tube 2 coaxial with the upper transmission tube 1 is vertically installed on the lower panel of the frame 25. The lower end of the upper transmission tube 1 below the upper panel is sleeved with an upper sealing ring 3 (a combination structure of a sliding sleeve and a sealing ring) that can form a radial seal. The upper sealing ring 3 is installed below the upper panel through a front and rear sliding guide mechanism 12. Front and rear elastic elements 26 are pressed between the upper panel and the upper sealing ring 3; the upper end of the lower transmission tube 2 above the lower panel is sleeved with a lower sealing ring 4 (a combination structure of a sliding sleeve and a sealing ring) that can form a radial seal. The lower sealing ring 4 is also installed above the lower panel through a front and rear sliding guide mechanism 12. Front and rear elastic elements 26 are pressed between the lower panel and the lower sealing ring 4. Figure 1 , Figure 2 shown.

[0025] The rotor component includes a delivery receiving pipe arranged between the upper and lower transmission pipes 1 and 2, and the delivery receiving pipe includes a coaxial inner pipe 5 and an outer pipe 6. The upper end of the inner pipe 5 is installed with an upper pressure plate 7, and the lower end of the inner pipe 5 is installed with a lower pressure plate 8. The outer pipe 6 is arranged between the upper and lower pressure plates 7 and 8 and the outer pipe 6 is installed on the left and right rotating shafts 14. The left rotating shaft 14 is installed on the left side plate of the frame 25. When the delivery receiving pipe is rotated to a vertical position (upper receiving station), it is coaxial with the upper and lower transmission pipes 1 and 2. The upper part of the inner tube 5 is provided with air holes 9 evenly distributed around the circumference, and each air hole 9 is provided with a small one-way skin valve 10, which can prevent air from flowing from the outer tube 6 to the inner tube 5. The lower part of the inner tube 5 is also provided with air holes evenly distributed around the circumference, and a bottle holder 11 is provided in the inner tube 5 above the lower air hole 9, and the bottle holder 11 is evenly provided with through air holes inside, and a large one-way skin valve 13 is provided on the bottle holder 11 to cover the through air holes to prevent the air in the inner tube 5 from flowing downward through the through air holes. Figure 1 , Figure 2 shown.

[0026] The rotor driving component includes a motor 15, a pulley transmission pair and a linkage mechanism. The pulley transmission pair includes a driven large pulley 16 and a driving small pulley 28. The right shaft end of the driven large pulley 16 is installed on the right side plate of the frame 25. The right shaft 14 is installed in the left end wheel body of the driven large pulley 16. The wheel body of the driven large pulley 16 is relatively provided with radial holes. Each radial hole is respectively provided with a steel ball 21, a compression spring 29 and a screw 20 from the inside to the outside. The spring force of the compression spring 29 is adjusted by adjusting the tightness of the compression spring 20. The spring force of the compression spring 29 presses the steel ball 21 into the corresponding notch Ⅰ23 on the right rotating shaft 14, so that the driven large pulley 16 and the right rotating shaft 14 are integrated and rotate synchronously; the motor 15 is installed on the right side plate of the frame 25 below the driven large pulley 16, and the driving small pulley 28 is installed on the output shaft of the motor 15. The driving small pulley 28 is connected to the driven large pulley 16 through a belt 27. Figure 1 , Figure 2 , as shown in Figure 4(b).

[0027] The linkage mechanism includes a cam 17 and upper and lower connecting rods 18, 19. The cam 17 is coaxially mounted on the right side shaft end of the driven large pulley 16 extending out of the right side plate of the frame 25. The upper and lower connecting rods 18, 19 are vertically arranged at the upper and lower sides of the cam 17, respectively. The upper end of the upper connecting rod 18 is bent to the left and connected to the upper sealing ring 3 through the corresponding through-hole on the right side plate. The lower end of the lower connecting rod 19 is also bent to the left and connected to the lower sealing ring 4 through the corresponding through-hole on the right side plate. Under the action of the upper and lower elastic elements 26, the upper and lower sealing rings 3, 4 press the ends of the upper and lower connecting rods 18, 19 onto the profile of the cam 17. The ejector pins arranged at the ends of the upper and lower connecting rods 18, 19 are embedded in the corresponding notches II 22 opened on the profile of the cam 17. The phase angles of the two opposite notches II 22 and the two opposite notches I 23 differ by 90°. Figure 1 , as shown in Figure 4(a).

[0028] The present invention has a three-station working mode:

[0029] 1. Upper receiving station (also serving as upper bottle sending station), as shown in Figure 3(a).

[0030] The motor 15 drives the conveying and receiving tube to rotate clockwise in the front and rear directions. The upper pressure plate 7 is blocked by the limit block 24 set on the upper sealing ring 3 and stays in the vertical position. The conveying and receiving tube is blocked and stops rotating. The upper and lower steel balls 21 are pushed open by the shaft body of the right rotating shaft 14 and disengage from the notch Ⅰ23. The driven large pulley 16 drives the cam 17 to continue to rotate 90° clockwise (without driving the idling of the rotating shaft 14). When the end pins of the upper and lower connecting rods 18 and 19 are embedded in the notch Ⅱ22, the motor 15 stops, and the upper and lower connecting rods 18 and 19 drive the upper and lower sealing rings 3 and 4. The upper sealing ring 3 is pressed against the upper pressure plate 7 and the lower sealing ring 4 is pressed against the lower pressure plate 8 by moving toward each other (the limit block 24 will not hinder the axial movement of the upper sealing ring 3), so that the upper transmission tube 1, the transmission receiving tube and the lower transmission tube 2 are connected, and the airflow of the upper transmission tube 1 is connected to the lower transmission tube 2 through the interlayer of the inner and outer tubes 5 and 6 of the transmission receiving tube. Under the action of airflow transmission, the transmission bottle enters the inner tube 5 of the transmission receiving tube through the upper transmission tube 1. Since the lower part of the inner tube 5 is provided with an air resistance, the entry speed of the transmission bottle is slowed down, so that the transmission bottle slowly reaches the bottle holder 11.

[0031] The pressing surface of each sealing ring and the corresponding pressure plate can be as follows Figure 1 The plane shown can also be Figure 2 The curved surface shown.

[0032] 2. Bottle unloading station, as shown in Figure 3(c).

[0033] The motor 15 rotates in the opposite direction, driving the driven large pulley 16 and the cam 17 to rotate counterclockwise, and the ejectors of the upper and lower connecting rods 18 and 19 are pushed open by the contour surface of the cam 17 and disengaged from the recess II 22. The spacing between the ejectors at the ends of the upper and lower connecting rods 18 and 19 increases, driving the upper and lower sealing rings 4 to move in the opposite direction, releasing the compression between the upper and lower sealing rings 3 and 4 and the upper and lower pressure plates 7 and 8. During the counterclockwise rotation of the driven large pulley 16, the upper and lower steel balls 21 are re-embedded in the recess I 23, driving the conveying and receiving tube to rotate counterclockwise to the upper end of the inner tube 5 obliquely to the lower left, and the transmission bottle received in the inner tube 5 is moved out of the conveying and receiving tube under the action of gravity.

[0034] 3. Bottle throwing station, as shown in Figure 3(b).

[0035] The motor 15 rotates in the opposite direction to drive the conveying and receiving tube to rotate clockwise until the upper end of the inner tube 5 is obliquely facing the upper left, and the transmission bottle is manually placed in the inner tube 5 of the conveying and receiving tube from the upper end; the motor 15 continues to drive the conveying and receiving tube to rotate to the upper receiving position, and after the upper and lower sealing rings 3 and 4 are pressed tightly on the upper and lower pressure plates 7 and 8, the air flow in the lower transmission tube 2 is blown into the inner tube 5 through the bottle holder 11 to transmit the transmission bottle out through the upper transmission tube 1.

Claims

1. A pneumatic tube flow rotary three-station terminal workstation, comprising a stator component, a rotor component and a rotor drive component, characterized in that: The stator component comprises an upper transmission tube (1) and a lower transmission tube (2), wherein the lower ends and upper ends of the upper and lower transmission tubes (1, 2) are respectively provided with an upper sealing ring (3) and a lower sealing ring (4) which can slide axially; The rotor component comprises a delivery receiving tube arranged between the upper and lower transmission tubes (1, 2), the delivery receiving tube comprising a coaxial inner tube (5) and an outer tube (6), the upper and lower ends of the inner tube (5) are respectively provided with an upper pressure plate (7) and a lower pressure plate (8), the outer tube (6) is installed on the left and right rotating shafts (14) and is arranged between the upper and lower pressure plates (7, 8), the upper and lower parts of the inner tube (5) are provided with air holes (9) evenly distributed around the circumference, each air hole (9) at the upper end is provided with a small one-way valve (10) for preventing air from flowing from the outer tube (6) to the inner tube (5), and a bottle holder (11) is provided in the inner tube (5) above each air hole (9) at the lower end, the bottle holder (11) is evenly provided with through air holes inside, and a large one-way valve (13) is provided on the bottle holder (11) for preventing air in the inner tube (5) from flowing downward; The rotor driving component comprises a pulley transmission pair driven by a motor (15) and a linkage mechanism, a rotating shaft (14) is coaxially mounted in a driven large pulley (16) of the pulley transmission pair, a steel ball (21) is arranged in the driven large pulley (16) and is elastically engaged in a recess Ⅰ (23) correspondingly provided on the rotating shaft (14), the linkage mechanism comprises a cam (17) coaxially mounted on the driven large pulley (16), an upper connecting rod (18) and a lower connecting rod (19) are arranged above and below the cam (17) and are respectively mounted on upper and lower sealing rings (3, 4), and the upper and lower sealing rings (3, 4) press the ends of the upper connecting rod (18) and the lower connecting rod (19) into recesses Ⅱ (22) correspondingly provided on the cam (17) under the action of upper and lower spring elements (26) provided accordingly; A limiting mechanism is provided for limiting the conveying and receiving tube to a vertical upper receiving position. At the upper receiving position, the rotating shaft (14) stops rotating, the upper and lower steel balls (21) are separated from the corresponding notch I (23), the driven large pulley (16) drives the cam (17) to rotate 90 degrees, the ends of the upper and lower connecting rods (18, 19) are embedded in the corresponding notch II (22), and the upper and lower connecting rods (18, 19) drive the upper and lower sealing rings (3, 4) to be pressed against the upper and lower pressure plates (7, 8) to achieve the docking between the upper conveying tube (1), the lower conveying tube (2) and the conveying and receiving tube.

2. The pneumatic tube flow rotary three-station terminal workstation according to claim 1 is characterized in that: The upper and lower sealing rings (3, 4) are respectively mounted on corresponding sliding guide mechanisms (12).

3. The pneumatic tube flow rotary three-station terminal workstation according to claim 1 is characterized in that: The pressing surface between each sealing ring and the corresponding pressure plate is a flat surface or an arc surface.

Images