Powder filling mechanism

Abstract

The application provides a powder filling mechanism, which comprises a rotary lifting seat and a quantity adjusting assembly. A plurality of filling needles are arranged on the rotary lifting seat. Each filling needle comprises a sleeve and a filling suction rod arranged in the sleeve. The filling suction rod is axially movable along the sleeve to adjust the quantity of the filling needle. The quantity adjusting assembly comprises a rotary drive, a rotary shaft and a lifting shaft which are sealingly arranged in the rotary lifting seat. The rotary drive is connected with the rotary shaft, and the rotary shaft is threadedly connected with the lifting shaft in the rotary lifting seat. A lifting piece is arranged on the rotary lifting seat, and the lifting shaft is connected with the filling suction rod through the lifting piece. The application can avoid the pollution of the sterile environment and simultaneously adjust the powder quantity of the plurality of filling needles.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of needle filling technology, and in particular to a powder filling mechanism. BACKGROUND

[0002] The production of pharmaceutical powder needs to be carried out in a sterile environment. When adjusting the needle filling amount, the position of the filling powder rod in the needle needs to be manually adjusted to adjust the size of the powder cavity in the needle, thereby controlling the filling amount of the needle. This will contaminate the sterile environment, and the adjustment is difficult and time-consuming. The filling amount of different needles may be different, and precise control of the filling amount cannot be achieved.

[0003] The utility model discloses a powder filling device in publication No. CN215323350U, including filling support, the mounting plate of being fixed on the filling support, the mounting plate is equipped with more than one powder filling head, the powder filling head includes: filling inner needle, is located the filling inner needle upper and is used for driving the lifting of filling inner needle screw rod nut transmission mechanism. But the powder filling device in the above, powder filling head and screw rod nut transmission mechanism are set up one by one, cannot realize the powder filling amount adjustment of multiple powder filling heads through one screw rod nut transmission mechanism, improve the cost and the overall volume of powder filling device, and the screw rod nut transmission mechanism is located outside the filling support, it is difficult to ensure that the screw rod nut transmission mechanism is isolated from the sterile environment of pharmaceutical powder production, and the sterile environment is contaminated. SUMMARY

[0004] The purpose of the present application is to solve the defects in the prior art, and to provide a powder filling mechanism that can avoid contamination of the sterile environment and simultaneously adjust the powder filling amount of several needles.

[0005] To achieve the above-mentioned purpose, the present application provides a powder filling mechanism, which comprises a rotary lifting seat and a filling amount adjusting assembly.

[0006] The rotary lifting seat is provided with several needles, and each needle comprises a sleeve and a filling powder rod arranged in the sleeve. The filling powder rod can move axially along the sleeve to adjust the filling amount of the needle.

[0007] The filling amount adjusting assembly comprises a rotary drive, a rotary shaft and a lifting shaft, which are sealingly arranged in the rotary lifting seat. The rotary drive is connected to the rotary shaft, and the rotary shaft is threadedly connected to the lifting shaft in the rotary lifting seat. The rotary lifting seat is provided with a lifting piece, and the lifting shaft is connected to the filling powder rod through the lifting piece.

[0008] In the present application, the needle comprises a sleeve and a filling powder rod arranged in the sleeve. The filling powder rod can move axially along the sleeve, so that the depth of the filling powder rod inserted into the sleeve changes, the powder space in the sleeve changes, and the powder filling amount of the needle is adjusted.

[0009] The dose adjusting assembly in the application comprises a rotary drive, a rotary shaft and a lifting shaft, which are all sealed in the rotary lifting seat, so that the rotary drive, the rotary shaft and the lifting shaft are all isolated from the sterile environment when the lifting member is lifted, thereby avoiding pollution of the sterile environment and reducing the overall volume of the powder filling mechanism.

[0010] The filling and powder suction rod of the needle filling device is connected with the lifting member, the rotary shaft is threadedly connected with the lifting shaft, so that the rotary motion of the rotary shaft is converted into the linear motion of the lifting shaft. When the rotary drive drives the rotary shaft to rotate, the lifting shaft rises / descends along the rotary shaft, and the lifting shaft drives the lifting member to rise / descend, so that the filling and powder suction rod of the needle filling device rises / descends, the powder space in the needle filling device changes in size, the powder filling amount of the plurality of needle filling devices is adjusted to the required amount at one time, and the powder filling amount in the plurality of needle filling devices is automatically adjusted and precisely controlled.

[0011] When the powder filling amount in the plurality of needle filling devices is adjusted to the required amount, the plurality of needle filling devices are arranged on the rotary lifting seat, the rotary lifting seat drives the plurality of needle filling devices to rise and rotate to the powder suction or powder blowing position, and the filling and powder suction rod sucks the powder into the sleeve or blows the powder out of the sleeve.

[0012] Optionally, the rotary lifting seat comprises a needle mounting seat and a rotary lifting mechanism for driving the needle mounting seat to rotate and lift, and the plurality of needle filling devices are arranged on the needle mounting seat. The rotary lifting mechanism drives the needle mounting seat to rotate and lift, so that the plurality of needle filling devices reach the powder suction or powder blowing position.

[0013] Optionally, the needle mounting seat is provided with a guide assembly, and the lifting member is slidably connected with the guide assembly. The guide assembly is used for guiding the lifting member to slide along a straight line, and can avoid the rotation of the lifting member due to the rotation of the rotary shaft.

[0014] Optionally, the guide assembly comprises a guide rod and a guide sleeve slidably arranged on the guide rod, and the lifting member is connected with the guide sleeve. The guide sleeve is used for reducing the friction between the guide rod and the guide sleeve during the lifting or lowering of the lifting member, so as to keep the lifting member smooth.

[0015] Optionally, the rotary lifting seat is provided with a rotary shaft retaining frame for limiting the top end of the rotary shaft, so as to keep the position of the rotary shaft.

[0016] Optionally, the rotary drive is connected with the rotary shaft through a shaft coupling.

[0017] Optionally, the filling and powder suction rod is clamped with the lifting member.

[0018] Optionally, a bayonet is arranged on the lifting member, and a protrusion matching the bayonet is arranged on the filling and powder suction rod, and the filling and powder suction rod is connected with the lifting member through the protrusion and the bayonet.

[0019] Optionally, the needle filling device further comprises a vacuum mechanism connected with the filling and powder suction rod, and the vacuum mechanism is used for sucking the powder into the sleeve or blowing the powder in the sleeve out.

[0020] Optionally, a sealing member is arranged between the lifting shaft and the lifting member and between the lifting shaft and the rotary lifting seat, and the sealing member isolates the rotary drive, the rotary shaft and the lifting shaft arranged in the rotary lifting seat from the external sterile environment, so as to avoid the pollution of the components in the rotary lifting seat to the external sterile environment.

[0021] Beneficial effects:

[0022] In the present application, the needle filling device comprises a sleeve and a filling and powder suction rod arranged in the sleeve, the filling and powder suction rod can move axially along the sleeve, the depth of the filling and powder suction rod inserted into the sleeve is changed, the powder containing space in the sleeve is changed, and the powder loading amount of the needle filling device is adjusted.

[0023] In the present application, the loading amount adjusting assembly comprises a rotary drive, a rotary shaft and a lifting shaft, and the rotary drive, the rotary shaft and the lifting shaft are all sealingly arranged in a rotary lifting seat, so that the rotary drive, the rotary shaft and the lifting shaft are all isolated from the sterile environment when the lifting member is lifted, the sterile environment is prevented from being polluted, and the overall volume of the powder filling mechanism is reduced.

[0024] The filling and powder suction rod of the needle filling device is connected with the lifting member, the rotary shaft is threadedly connected with the lifting shaft, the rotary motion of the rotary shaft is converted into the linear motion of the lifting shaft, when the rotary drive drives the rotary shaft to rotate, the lifting shaft ascends / descends along the rotary shaft, the lifting member is driven by the lifting shaft to ascend / descend, the filling and powder suction rod of the needle filling device ascends / descends, the powder containing space in the needle filling device changes, the powder loading amount of the several needle filling devices is adjusted to the required amount at one time, and the powder loading amount in the several needle filling devices is automatically adjusted and precisely controlled.

[0025] When the powder loading amount in the several needle filling devices is adjusted to the required amount, the several needle filling devices are arranged on the rotary lifting seat, the rotary lifting seat drives the several needle filling devices to ascend / descend and rotate to the powder suction or powder blowing position, and the filling and powder suction rod sucks the powder into the sleeve or blows the powder in the sleeve out. BRIEF DESCRIPTION OF DRAWINGS

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1 This is a structural diagram of a powder filling mechanism disclosed in the prior art;

[0028] Figure 2 A cross-sectional view of a powder filling mechanism disclosed in the prior art;

[0029] Figure 3 This is a structural diagram of the powder filling mechanism disclosed in this invention;

[0030] Figure 4 This is a cross-sectional view of the powder filling mechanism disclosed in this invention;

[0031] Figure 5 This is another structural view of the powder filling mechanism disclosed in this invention.

[0032] Figure label:

[0033] Existing technology: 01 Powder filling head; 011 Inner filling needle; 012 Filling air tube; 013 Outer filling needle; 014 Volumetric cavity; 015 Screw and nut transmission mechanism; 02 Filling support; 03 Mounting plate;

[0034] This invention comprises: 1. Rotary lifting seat; 11. Filling needle mounting seat; 12. Connecting rod; 13. Rotary shaft retainer; 14. Sealing sleeve; 2. Lifting component; 21. Bayonet; 3. Filling volume adjustment assembly; 31. Rotary drive; 32. Coupling; 33. Rotary shaft; 34. Lifting shaft; 41. Guide rod; 42. Guide sleeve; 5. Filling needle; 51. Sleeve; 52. Filling powder suction rod; 53. Interface; 54. Protrusion.

[0035] The realization of the objective, functional characteristics and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0036] See Figure 1 and 2 The existing patent with publication number CN215323350U discloses a powder filling device, including a filling support 02 and a mounting plate 03 fixed on the filling support 02. The mounting plate 03 is provided with one or more powder filling heads 01. The powder filling head 01 includes: an inner filling needle 011, an outer filling needle 013, and a screw and nut transmission mechanism 015 located above the inner filling needle 011 and used to drive the inner filling needle 011 to rise and fall.

[0037] The filling outer needle 013 is in a cylindrical shape, and one end of the filling inner needle 011 is inserted into the filling outer needle 013, and the filling inner needle 011 is lifted along the axis of the filling outer needle 013 to form a variable volume cavity 014. The filling inner needle 011 is driven to lift along the axis of the filling outer needle 013 by the screw nut transmission mechanism 015 to form the variable volume cavity 014. The powder filling head 01 further comprises a filling air pipe 012 in communication with the inside of the filling inner needle 011 for generating a vacuum adsorption force to suck and blow the powder.

[0038] The screw nut transmission mechanism 015 in the above-mentioned powder filling device is arranged above the filling inner needle 011, one filling needle filling inner needle 011 is provided with one screw nut transmission mechanism 015, so as to adjust the filling amount of the powder filling head 01, when the number of powder filling heads 01 is multiple, the corresponding number of screw nut transmission mechanisms 015 need to be provided, and the powder filling amount of multiple powder filling heads 01 cannot be adjusted by one screw nut transmission mechanism 015, which increases the cost and the overall volume of the powder filling device. When the powder filling device is applied to the field of medicine, it is necessary to ensure the sterile environment of medicine production, the screw nut transmission mechanism 015 is arranged outside the filling support 02, it is difficult to isolate the screw nut transmission mechanism 015 from the sterile environment, and the sterile environment is polluted.

[0039] Referring to Figures 3-5 According to the embodiment of the present application, a powder filling mechanism is provided, which comprises a rotary lifting seat 1 and a filling amount adjusting assembly 3.

[0040] The rotary lifting seat 1 is provided with a plurality of filling needles 5, each filling needle 5 comprises a sleeve 51 and a filling suction rod 52 arranged in the sleeve 51, and the filling suction rod 52 can move axially along the sleeve 51 to adjust the filling amount of the filling needle 5.

[0041] The filling amount adjusting assembly 3 comprises a rotary drive 31, a rotary shaft 33 and a lifting shaft 34 which are sealingly arranged in the rotary lifting seat 1, the rotary drive 31 is connected with the rotary shaft 33, the rotary shaft 33 is threadedly connected with the lifting shaft 34 in the rotary lifting seat 1, the rotary lifting seat 1 is provided with a lifting piece 2, and the lifting shaft 34 is connected with the filling suction rod 52 through the lifting piece 2.

[0042] Specifically, the filling needle 5 comprises a sleeve 51 and a filling suction rod 52 arranged in the sleeve 51, and the filling suction rod 52 can move axially along the sleeve 51 to change the depth of the filling suction rod 52 inserted into the sleeve 51, so as to change the powder containing space in the sleeve 51, thereby adjusting the powder filling amount of the filling needle 5.

[0043] The dose adjusting assembly 3 comprises a rotary drive 31, a rotary shaft 33 and a lifting shaft 34 which are sealed in the rotary lifting seat 1, and can ensure that the rotary drive 31, the rotary shaft 33 and the lifting shaft 34 are isolated from the sterile environment when the lifting member 2 is lifted, so as to avoid pollution of the sterile environment and reduce the overall volume of the powder filling mechanism.

[0044] The filling and powder suction rod 52 of the filling needle 5 is connected with the lifting member 2, the rotary shaft 33 is threadedly connected with the lifting shaft 34, and the rotary motion of the rotary shaft 33 is converted into the linear motion of the lifting shaft 34. When the rotary drive 31 drives the rotary shaft 33 to rotate, the lifting shaft 34 rises / descends along the rotary shaft 33, the lifting shaft 34 drives the lifting member 2 to rise / descend, the filling and powder suction rod 52 of the filling needle 5 rises / descends, the powder space in the filling needle 5 changes in size, the powder filling amount of the plurality of filling needles 5 is adjusted to the required amount at one time, and the powder filling amount in the plurality of filling needles 5 is automatically adjusted and precisely controlled.

[0045] When the powder filling amount in the plurality of filling needles 5 is adjusted to the required amount, the plurality of filling needles 5 are arranged on the rotary lifting seat 1, the rotary lifting seat 1 drives the plurality of filling needles 5 to rise and rotate to the powder suction or powder blowing position, and the filling and powder suction rod 52 sucks the powder into the sleeve 51 or blows the powder in the sleeve 51 out.

[0046] Referring to Figures 3-5 In some embodiments of the present application, the rotary lifting seat 1 comprises a filling needle mounting seat 11 and a rotary lifting mechanism for driving the filling needle mounting seat 11 to rotate and lift, and the plurality of filling needles 5 are arranged on the filling needle mounting seat 11.

[0047] When the powder filling amount in the plurality of filling needles 5 is adjusted to the required amount, the rotary lifting mechanism drives the filling needle mounting seat 11 to rotate and lift, so that the plurality of filling needles 5 reach the powder suction or powder blowing position, the powder suction or powder blowing mechanism is started, the powder is sucked into the sleeve 51 or blown out of the sleeve 51. The rotary lifting mechanism is a driving motor, etc., the filling needle mounting seat 11 is connected with the rotary lifting mechanism through a connecting rod 12, the rotary drive 31 is arranged in the connecting rod 12, the rotary shaft 33 is arranged in the filling needle mounting seat 11 and the connecting rod 12, and the lifting shaft 34 is also arranged in the filling needle mounting seat 11 and the connecting rod 12. A sealing sleeve 14 is arranged outside the connecting rod 12, the sealing sleeve 14 is a bellows, etc., and is used to isolate the connecting rod 12 from the sterile environment when the connecting rod 12 is lifted or rotated.

[0048] Referring to Figure 4 In some embodiments of the present application, a guide assembly is arranged on the filling needle mounting seat 11, and the lifting member 2 is slidably connected with the guide assembly.

[0049] The guide assembly is used for guiding the lifting member 2 to ensure that the lifting member 2 slides along a straight line and avoids rotation of the lifting member 2 due to rotation of the rotating shaft 33.

[0050] Referring to Figure 4 In some embodiments of the present application, the guide assembly comprises a guide rod 41 and a guide sleeve 42 slidingly arranged on the guide rod 41, and the lifting member 2 is connected with the guide sleeve 42.

[0051] The guide sleeve 42 is a sliding bearing, which is used for reducing friction between the guide rod 41 and the guide sleeve 42 during lifting or lowering of the lifting member 2, and maintaining smoothness of lifting or lowering of the lifting member 2.

[0052] Referring to Figures 3-5 In some embodiments of the present application, the rotating lifting seat 1 is provided with a rotating shaft holder 13 for limiting a top end of the rotating shaft 33 to maintain the position of the rotating shaft 33.

[0053] Referring to Figure 4 and 5 In some embodiments of the present application, the rotating drive 31 is connected with the rotating shaft 33 through the shaft coupling 32.

[0054] Referring to Figure 4 In some embodiments of the present application, the filling and powder suction rod 52 is clamped with the lifting member 2.

[0055] Referring to Figure 4 In some embodiments of the present application, the lifting member 2 is provided with a bayonet 22, and the filling and powder suction rod 52 is provided with a protrusion 54 matched with the bayonet 22.

[0056] The lifting member 2 is provided with a plurality of bayonets 22, and the filling and powder suction rod 52 is provided with a plurality of protrusions 54 matched with the bayonets 22, so that the filling and powder suction rod 52 is connected with the lifting member 2 through the protrusions 54 and the bayonets 22.

[0057] Referring to Figures 3-5 In some embodiments of the present application, the needle filling device 5 further comprises a vacuum mechanism connected with the filling and powder suction rod 52, and the filling and powder suction rod 52 is provided with an interface 53 connected with the vacuum mechanism, so that powder is sucked into the sleeve 51 or powder in the sleeve 51 is blown out.

[0058] Referring to Figure 4 In some embodiments of the present application, the lifting shaft 34 and the lifting member 2, and the lifting shaft 34 and the rotating lifting seat 1 are both provided with sealing members.

[0059] When the lifting member 2 rises or falls, the rotation drive 31, the rotation shaft 33 and the lifting shaft 34 arranged in the rotating lifting seat 1 are isolated from the external sterile environment, so as to avoid that the components in the rotating lifting seat 1 pollute the external sterile environment.

Claims

1. A powder filling mechanism characterized by, The device comprises a rotary lifting seat (1) and a quantity adjusting assembly (3); The rotary lifting seat (1) is provided with a plurality of filling needles (5), and each filling needle (5) comprises a sleeve (51) and a filling suction rod (52) arranged in the sleeve (51); the filling suction rod (52) is axially movable in the sleeve (51) to adjust the quantity of the filling needle (5); The quantity adjusting assembly (3) comprises a rotary drive (31) arranged in the rotary lifting seat (1) in a sealed manner, a rotary shaft (33) and a lifting shaft (34); the rotary drive (31) is connected with the rotary shaft (33); the rotary shaft (33) is threadedly connected with the lifting shaft (34) in the rotary lifting seat (1); the rotary lifting seat (1) is provided with a lifting piece (2); the lifting shaft (34) is connected with the filling suction rod (52) through the lifting piece (2).

2. The powder filling mechanism according to claim 1, wherein The rotary lifting seat (1) comprises a filling needle mounting seat (11) and a rotary lifting mechanism for driving the filling needle mounting seat (11) to rotate and lift; the plurality of filling needles (5) are arranged on the filling needle mounting seat (11).

3. The powder filling mechanism according to claim 2, wherein The filling needle mounting seat (11) is provided with a guide assembly; the lifting piece (2) is slidably connected with the guide assembly.

4. The powder filling mechanism according to claim 3, wherein The guide assembly comprises a guide rod (41) and a guide sleeve (42) slidably arranged on the guide rod (41); the lifting piece (2) is connected with the guide sleeve (42).

5. The powder filling mechanism according to claim 1, wherein The rotary lifting seat (1) is provided with a rotary shaft holder (13).

6. The powder filling mechanism according to claim 1, wherein The rotary drive (31) is connected with the rotary shaft (33) through a shaft coupling (32).

7. The powder filling mechanism according to claim 1, wherein The filling suction rod (52) is clamped with the lifting piece (2).

8. The powder filling mechanism according to claim 7, wherein The lifting piece (2) is correspondingly provided with a clamping opening (22); the filling suction rod (52) is provided with a protrusion (54) matched with the clamping opening (22).

9. The powder filling mechanism according to claim 1, wherein The filling needle (5) further comprises a vacuum mechanism connected with the filling suction rod (52).

10. The powder filling mechanism according to claim 1, wherein Sealing pieces are arranged between the lifting shaft (34) and the lifting piece (2) and between the lifting shaft (34) and the rotary lifting seat (1).

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