Production automatic feeding device for soft capsule preparation

Abstract

The invention relates to the technical field of soft capsule production equipment, in particular to a production automatic feeding device for soft capsule preparation, which comprises a feeding frame, and a plurality of feeding connectors are fixedly arranged at the top of the feeding frame. According to the automatic feeding device, the anti-blocking structure is arranged in the feeding assembly, the blocking situation in the feeding process is greatly reduced, the automatic feeding stability of the soft capsules in the production, preparation and processing process is guaranteed, in addition, the feeding structure is automatically replaced through the material replacing assembly, it is guaranteed that the automatic feeding device can stably operate, and the production efficiency is improved. The time for influencing the normal operation efficiency of the whole production line due to faults is shortened, the feeding structure which is blocked or has other faults does not need to be replaced manually, the labor intensity of workers is reduced, meanwhile, the operation difficulty of the automatic feeding device in the soft capsule preparation and production process is reduced, and the production efficiency is improved. The preparation and production efficiency of the soft capsules can be effectively improved while normal and continuous operation of the automatic feeding device is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of soft capsule production equipment, in particular to an automatic feeding device for preparing soft capsules. Background Art

[0002] Soft capsules, also known as soft pills, are a type of capsule packaging, commonly found in medicines or health foods. They are made by sealing liquid drugs or liquid-solid drugs in soft capsule materials. Soft capsule materials are made of gelatin, glycerin or other suitable pharmaceutical excipients alone or in combination. In the preparation process of soft capsules, a feeding device is required, which is responsible for quantitatively and accurately feeding fillers such as drugs, oily liquids, suspensions or powder particles into the soft capsule shell.

[0003] At present, the feeding structure used in the preparation process of soft capsules is that the bottom end of the guide tube is inserted between the two colloids of the soft capsule. During the pressing process of the two colloids, the capsule is sent into the interior of the soft capsule through the guide tube. Finally, with the closing of the colloid, the injection of the capsule is completed synchronously. However, with the gradual closure between the two colloids, after the capsule is finally injected into the space between the two colloids, due to the presence of gas in the cavity formed between the two colloids, the capsule cannot completely fill the interior of the cavity, resulting in oxidation of the capsule between the residual air after the filling between the two colloids is completed, thereby affecting the quality of the finished soft capsule.

[0004] Therefore, we proposed an automatic feeding device for the production of soft capsules. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an automatic feeding device for the production of soft capsules, which is used to solve the above-mentioned technical defects.

[0006] To achieve the above purpose, the present invention is implemented by the following technical scheme: an automatic feeding device for the production of soft capsules, comprising a feeding rack, a plurality of feeding interfaces are fixedly arranged on the top of the feeding rack, a feeding assembly is arranged inside the feeding rack, and a material changing assembly is also arranged inside the feeding rack;

[0007] The feeding assembly includes a lifting frame, a connecting frame and a material injection pipe. The lifting frame is movably arranged inside the feeding frame, and servo electric cylinders are fixedly arranged on the left and right sides of the inner wall of the feeding frame. The driving ends of the two servo electric cylinders are fixedly connected to the left and right sides of the lifting frame respectively. The bottom of the lifting frame is movably arranged with a connecting frame, and a plurality of material injection pipes are fixedly arranged at the bottom of the connecting frame. The left and right sides of the bottom of the lifting frame are fixedly arranged with connecting blocks, and the top of the connecting frame is movably connected between the two connecting blocks. A plurality of material guide pipes are fixedly arranged inside the lifting frame, and a plurality of feeding spring pipes are also fixedly arranged on the top of the lifting frame.

[0008] A material guide channel is arranged in the middle of the injection tube, and discharge channels are arranged on both sides of the injection tube. A spiral material guide frame 1 is rotatably arranged inside the injection tube and located inside the material guide channel. A spiral material guide frame 2 is rotatably arranged inside the material guide tube, and the bottom of the spiral material guide frame 2 is movably connected to the top of the spiral material guide frame 1.

[0009] Preferably, the top ends of several of the feeding spring tubes are respectively connected to the interiors of several feeding interfaces, and the bottom ends of several of the feeding spring tubes are respectively connected to the interiors of several material guide tubes, and the bottom ends of several of the material guide tubes are respectively connected to the interiors of several injection tubes.

[0010] Preferably, a recovery frame is fixedly provided inside the lifting frame, and a plurality of recovery tubes are provided inside the recovery frame through a micro pump, the bottom ends of the plurality of recovery tubes and the bottom ends of the plurality of material guide tubes extend to the bottom of the lifting frame, the top of the connecting frame is provided with a plurality of material guide holes matching with the bottom ends of the material guide tubes, and the top of the connecting frame is also provided with a plurality of discharge holes matching with the bottom ends of the recovery tubes.

[0011] Preferably, a driving frame is fixedly provided on the top of the inner wall of the lifting frame, and a driving motor is also fixedly provided on one side of the driving frame, a transmission gear is rotatably provided inside the driving frame, and pulleys are fixedly provided at the bottom of several transmission gears, and the surfaces of several pulleys are connected by belt transmission, a driving gear is fixedly provided on one end of the output shaft of the driving motor, and the surface of the driving gear is meshed with the surface of the rightmost transmission gear for transmission, the surfaces of several transmission gears except the rightmost transmission gear extend to the inside of several material guide pipes respectively, and the surfaces of several transmission gears are meshed with the second top of the spiral material guide frame inside several material guide pipes for transmission.

[0012] Preferably, the material changing assembly includes a material changing rack, the left and right sides of the inner wall of the feed rack are provided with rotating grooves, and the material changing racks are rotatably arranged inside the two rotating grooves, three fixing racks are fixedly arranged inside the two material changing racks, and the three fixing racks are arranged at equal angles with respect to the central axis of the material changing rack, one side of the fixing rack and one side of the connecting block are movably provided with connecting rods through micro electric cylinders, and connecting holes matching with the connecting rods are arranged on the upper and lower sides of both sides of the connecting rack, and the connecting rack to be replaced is movably arranged between the two fixing racks.

[0013] Preferably, a driving rod is rotatably arranged on the upper part of the feeding rack, and driven gears are fixedly arranged on the left and right sides of the driving rod surface, and the surfaces of the two driven gears are respectively meshed with the surfaces of the two material changing racks for transmission. A servo motor is fixedly arranged on the right side of the feeding rack, and one end of the output shaft of the servo motor is fixedly connected to the right end of the driving rod through a coupling.

[0014] Preferably, the working method of the automatic feeding device for producing soft capsules comprises the following steps:

[0015] Step 1: During the feeding operation when preparing the soft capsule, the driving ends of the two servo electric cylinders are used to control the lifting frame to move downward until the bottom ends of the plurality of injection tubes at the bottom of the connecting frame are respectively located in the middle of the two colloid closing positions. As the two colloids are closed, the capsule is introduced into the feeding spring tube through the feeding interface. The capsule enters the injection tube through the feeding spring tube and the guide tube, and the synchronous injection operation of the plurality of soft capsules is realized through the plurality of injection tubes;

[0016] Step 2, when performing the capsule injection operation, the output shaft of the driving motor is used to control the driving gear to rotate, and the driving gear is used to drive the rightmost transmission gear to rotate, and at the same time, the synchronous transmission of several pulleys is used to make several transmission gears rotate synchronously, and several transmission gears are used to drive several spiral guide racks 2 inside the guide tubes to rotate synchronously. Since the bottom ends of several spiral guide racks 2 are respectively engaged with the top ends of several spiral guide racks 1, several spiral guide racks 1 are driven to rotate synchronously by several spiral guide racks 2, and the spiral guide rack 2 rotating inside the guide tube and the spiral guide rack 1 rotating inside the injection tube are used to solve the problem that the guide tube and the injection tube are easily blocked during the injection process. In addition, during the injection process, the air inside the soft capsule is extracted by using two discharge channels inside the injection tube;

[0017] Step 3. When replacing the feeding structure, the output shaft of the servo motor is used to control the driving rod to rotate, so that the two controlled fixed frames are rotated to the horizontal position with the connecting frame to be replaced, and the connecting frame is controlled to be lifted between the two fixed frames, and the connecting rods on the two fixed frames are used to connect with the connecting holes at the bottom of the two sides of the connecting frame. At the same time, the connection holes at the top of the two sides of the connecting frame and the connecting rods on the two connecting blocks are released. Then continue to control the material changing frame to rotate 60°, so that the connecting frame and the injection pipe to be replaced are under the lifting frame, and the connecting rods on the two connecting blocks are connected to the connecting holes at the top of the two sides of the connecting frame. At the same time, the connection rods on the two fixed frames and the connecting holes at the bottom of the two sides of the connecting frame are released. The material changing frame is controlled to rotate a certain angle to avoid the fixed frame interfering with the lifting of the lifting frame, and the new connecting frame is replaced and installed on the lifting frame through the material changing frame.

[0018] Compared with the prior art, it has the following beneficial effects:

[0019] 1. In the present invention, an anti-blocking structure is arranged inside the feeding component, which greatly reduces the occurrence of blockage in the feeding process, ensures the stability of automatic feeding in the production and preparation of soft capsules, and when other faults occur in the feeding structure, the feeding structure is automatically replaced by the material replacement component to ensure that the automatic feeding device can operate stably, and the time of affecting the normal operation efficiency of the entire production line due to the failure of the automatic feeding device is reduced. There is no need to manually replace the feeding structure that is blocked or has other faults, which reduces the labor intensity and the difficulty of operating the automatic feeding device in the soft capsule preparation and production process. While ensuring that the automatic feeding device can operate normally and continuously, it can also effectively improve the preparation and production efficiency of soft capsules.

[0020] 2. In the present invention, several spiral guide frames 2 inside several guide tubes are driven to rotate synchronously by several transmission gears. Since the bottom ends of several spiral guide frames 2 are respectively clamped with the top ends of several spiral guide frames 1, several spiral guide frames 2 are driven to rotate synchronously. The spiral guide frames 2 rotating inside the guide tube and the spiral guide frame 1 rotating inside the injection tube can effectively solve the problem that the guide tube and the injection tube are easily blocked during the injection process. In addition, during the injection process, the two discharge channels inside the injection tube are used to extract the air inside the soft capsule, so as to ensure the residual amount of air inside the soft capsule after the injection is completed, thereby greatly improving the quality of the finished product prepared by the soft capsule.

[0021] 3. By placing the connecting frame and the injection pipe to be replaced under the lifting frame, connecting rods on the two connecting blocks are connected to the connecting holes on both sides of the connecting frame, and at the same time releasing the connection between the connecting rods on the two fixed frames and the connecting holes on both sides of the connecting frame, the material changing frame is controlled to rotate to a certain angle to avoid the fixed frame interfering with the lifting of the lifting frame. The new connecting frame is replaced and installed on the lifting frame through the material changing frame to ensure that the automatic feeding device can operate stably and reduce the time that the normal operation efficiency of the entire production line is affected by the failure of the automatic feeding device. There is no need to manually replace the feeding structure that is blocked or otherwise faulty, which reduces the labor intensity and the difficulty of operating the automatic feeding device in the soft capsule preparation and production process. While ensuring that the automatic feeding device can operate normally and continuously, it can also effectively improve the preparation and production efficiency of soft capsules.

[0022] Other features and advantages of the present invention will be set forth in the following description, and in part will become apparent from the description, or may be understood through implementation of the present invention. The objects and other advantages of the present invention may be realized and obtained through the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of an automatic feeding device for preparing soft capsules according to an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of the internal structure of a feed rack according to an embodiment of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the material changing rack and the connecting rack according to an embodiment of the present invention;

[0026] Figure 4 A schematic diagram of a lifting frame and a servo electric cylinder structure according to an embodiment of the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the injection pipe, the material guide channel and the material discharge channel according to an embodiment of the present invention;

[0028] Figure 6 It is a schematic diagram of the lifting frame and the recovery frame structure according to an embodiment of the present invention;

[0029] Figure 7 It is a schematic diagram of the structure of the lifting frame and the driving frame according to an embodiment of the present invention;

[0030] Figure 8 A schematic diagram of the internal structure of a driving frame according to an embodiment of the present invention;

[0031] Fig. 9 Schematic diagram of the driving rod and driven gear structure according to an embodiment of the present invention.

[0032] In the figure, 1. feeding rack; 2. feeding interface; 3. injection pipe; 4. lifting rack; 5. connecting block; 6. connecting rack; 7. connecting hole; 8. connecting rod; 9. material guide socket; 10. material discharge socket; 11. material guide channel; 12. material discharge channel; 13. recovery frame; 14. recovery pipe; 15. material guide pipe; 16. spiral material guide rack 1; 17. spiral material guide rack 2; 18. driving rack; 19. driving motor; 20. driving gear; 21. transmission gear; 22. pulley; 23. material changing rack; 24. fixing rack; 25. driving rod; 26. driven gear; 27. servo motor; 28. servo electric cylinder; 29. ​​feeding spring tube; 30. rotating groove. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Embodiment 1:

[0035] See also Figures 1 to 9 As shown, an automatic feeding device for the production of soft capsules comprises a feeding rack 1, a plurality of feeding interfaces 2 are fixedly arranged on the top of the feeding rack 1, a feeding assembly is arranged inside the feeding rack 1, and a material changing assembly is also arranged inside the feeding rack 1;

[0036] It should be noted that in order to solve the problem that the feeding pipeline is prone to blockage during the current feeding operation of soft capsules in the production process, which in turn causes the entire production line to stop and greatly reduces the efficiency of soft capsule preparation, the present invention provides an anti-blocking structure inside the feeding component, which greatly reduces the occurrence of blockage in the feeding process and ensures the stability of automatic feeding of soft capsules during the production and preparation process. In addition, when other faults occur in the feeding structure, the feeding structure is automatically replaced by the material replacement component to ensure that the automatic feeding device can operate stably, reducing the time that the normal operation efficiency of the entire production line is affected by the fault of the automatic feeding device. There is no need to manually replace the feeding structure that is blocked or has other faults, which reduces the labor intensity and the difficulty of operating the automatic feeding device during the soft capsule preparation process. While ensuring that the automatic feeding device can operate normally and continuously, it can also effectively improve the preparation efficiency of soft capsules.

[0037] Furthermore, the feeding assembly includes a lifting frame 4, a connecting frame 6 and an injection pipe 3. The lifting frame 4 is movably arranged inside the feeding frame 1, and servo electric cylinders 28 are fixedly arranged on the left and right sides of the inner wall of the feeding frame 1. The driving ends of the two servo electric cylinders 28 are respectively fixedly connected to the left and right sides of the lifting frame 4. The lifting frame 4 is controlled to move up and down inside the feeding frame 1 by the two servo electric cylinders 28 on the left and right sides, thereby playing a lifting and lowering control role on the lifting frame 4; the bottom of the lifting frame 4 is movably arranged with a connecting frame 6, and the bottom of the connecting frame 6 is fixedly arranged with a plurality of injection pipes. The left and right sides of the bottom of the material pipe 3 and the lifting frame 4 are fixedly provided with connecting blocks 5, and the top of the connecting frame 6 is movably connected between the two connecting blocks 5, and a plurality of material guide pipes 15 are fixedly provided inside the lifting frame 4, and a plurality of feeding spring tubes 29 are also fixedly provided on the top of the lifting frame 4, and the top ends of the plurality of feeding spring tubes 29 are respectively connected to the interiors of a plurality of feeding interfaces 2, and the bottom ends of the plurality of feeding spring tubes 29 are respectively connected to the interiors of a plurality of material guide pipes 15, and the bottom ends of the plurality of material guide pipes 15 are respectively connected to the interiors of a plurality of injection pipes 3.

[0038] It should be noted that, during the feeding operation when preparing soft capsules, the driving ends of the two servo electric cylinders 28 are used to control the lifting frame 4 to move downward until the bottom ends of the several injection tubes 3 at the bottom of the connecting frame 6 are respectively located in the middle of the two colloid closures. As the two colloids are closed, capsules are introduced into the feeding spring tube 29 through the feeding interface 2, and the capsules enter the injection tube 3 through the feeding spring tube 29 and the guide tube 15. The synchronous injection operation of several soft capsules is realized through several injection tubes 3, thereby improving the preparation and production efficiency of soft capsules.

[0039] Embodiment 2:

[0040] Furthermore, in order to avoid the problem of blockage of the guide tube 15 and the injection tube 3 during the feeding process, and the problem of air remaining in the internal cavity of the soft capsule after the injection is completed, a guide channel 11 is provided in the middle of the injection tube 3, and discharge channels 12 are provided on both sides of the injection tube 3. A spiral guide frame 16 is rotatably provided inside the injection tube 3 and located inside the guide channel 11. A spiral guide frame 2 17 is rotatably provided inside the guide tube 15, and the spiral guide frame 2 17 is rotatably provided inside the guide tube 15. The bottom of the lifting frame 4 is movably connected with the top of the spiral guide frame 16, and a recovery frame 13 is fixedly arranged inside the lifting frame 4, and a plurality of recovery pipes 14 are arranged inside the recovery frame 13 through a micro pump, and the bottom ends of the plurality of recovery pipes 14 and the bottom ends of the plurality of guide pipes 15 extend to the bottom of the lifting frame 4, and the top of the connecting frame 6 is provided with a plurality of guide holes 9 matched with the bottom ends of the guide pipes 15, and the top of the connecting frame 6 is also provided with a plurality of discharge holes 10 matched with the bottom ends of the recovery pipes 14.

[0041] Furthermore, a driving frame 18 is fixedly provided on the top of the inner wall of the lifting frame 4, and a driving motor 19 is also fixedly provided on one side of the driving frame 18. A transmission gear 21 is rotatably provided inside the driving frame 18, and a plurality of transmission gears 21 are fixedly provided with pulleys 22 at the bottom, and the surfaces of the plurality of pulleys 22 are connected by belt transmission. A driving gear 20 is fixedly provided on one end of the output shaft of the driving motor 19, and the surface of the driving gear 20 is meshed with the surface of the rightmost transmission gear 21 for transmission. The surfaces of the plurality of transmission gears 21 except the rightmost transmission gear 21 extend to the interior of a plurality of material guide tubes 15, and the surfaces of the plurality of transmission gears 21 are meshed with the top of the spiral material guide frame 17 inside the plurality of material guide tubes 15 for transmission.

[0042] It should be noted that, when the capsule injection operation is performed, the output shaft of the driving motor 19 is used to control the driving gear 20 to rotate, and the driving gear 20 drives the rightmost transmission gear 21 to rotate. At the same time, the synchronous transmission of a plurality of pulleys 22 is used to allow the plurality of transmission gears 21 to rotate synchronously, and the plurality of transmission gears 21 are used to drive the plurality of spiral guide racks 17 inside the guide tube 15 to rotate synchronously. Since the bottom ends of the plurality of spiral guide racks 17 are respectively engaged with the top ends of the plurality of spiral guide racks 16, the plurality of spiral guide racks 16 are connected to the guide tube 15 by the plurality of transmission gears 21. The spiral guide frame 17 drives several spiral guide frames 16 to rotate synchronously. The spiral guide frame 17 rotating inside the guide tube 15 and the spiral guide frame 16 rotating inside the injection tube 3 can effectively solve the problem that the guide tube 15 and the injection tube 3 are easily blocked during the injection process. In addition, during the injection process, the two discharge channels 12 inside the injection tube 3 are used to extract the air inside the soft capsule, thereby ensuring the residual amount of air inside the soft capsule after the injection is completed, thereby greatly improving the quality of the finished product of the soft capsule.

[0043] Embodiment 3:

[0044] Furthermore, in order to avoid the problem that the entire production line is shut down when the injection pipe 3 of the automatic feeding device fails, the material changing assembly includes a material changing rack 23, and the left and right sides of the inner wall of the feeding rack 1 are provided with rotating grooves 30, and the insides of the two rotating grooves 30 are rotatably provided with material changing racks 23, and the insides of the two material changing racks 23 are fixed with three fixed racks 24, and the three fixed racks 24 are arranged at equal angles with respect to the central axis of the material changing rack 23, and one side of the fixed rack 24 and one side of the connecting block 5 are movably provided with connecting rods 8 through micro-electric cylinders, and the upper and lower sides of both sides of the connecting rack 6 are provided with connecting holes 7 matched with the connecting rods 8, and the connecting rack 6 to be replaced is movably arranged between the two fixed racks 24;

[0045] A driving rod 25 is also rotatably arranged on the upper part of the inside of the feeding rack 1, and driven gears 26 are fixedly arranged on the left and right sides of the surface of the driving rod 25. The surfaces of the two driven gears 26 are respectively meshed with the surfaces of the two material changing racks 23 for transmission. A servo motor 27 is fixedly arranged on the right side of the feeding rack 1, and one end of the output shaft of the servo motor 27 is fixedly connected to the right end of the driving rod 25 through a coupling.

[0046] It should be noted that when replacing the feeding structure, the driving rod 25 is controlled to rotate through the output shaft of the servo motor 27, so that the two controlled fixed frames 24 are rotated to the horizontal position with the connecting frame 6 to be replaced, and the connecting frame 6 is controlled to be lifted between the two fixed frames 24, and the connecting rods 8 on the two fixed frames 24 are connected with the connecting holes 7 on the lower sides of the connecting frame 6, and the connection holes 7 on the upper sides of the connecting frame 6 and the connecting rods 8 on the two connecting blocks 5 are disconnected, and then the material replacement frame 23 is controlled to rotate 60°, so that the connecting frame 6 and the injection pipe 3 to be replaced are under the lifting frame 4, and the connecting rods 8 on the two connecting blocks 5 are connected with the connecting holes 7 on the upper sides of the connecting frame 6, and the two fixed frames are released. The connecting rod 8 on 24 is connected to the connecting holes 7 at the lower sides of the connecting frame 6, and the material changing frame 23 is controlled to rotate to a certain angle to avoid interference of the fixed frame 24 with the lifting and lowering of the lifting frame 4. The new connecting frame 6 is replaced and installed on the lifting frame 4 through the material changing frame 23, ensuring that the automatic feeding device can operate stably, reducing the time that the normal operation efficiency of the entire production line is affected by the failure of the automatic feeding device, and there is no need to manually replace the feeding structure that is blocked or otherwise faulty, which reduces the labor intensity and the difficulty of operating the automatic feeding device in the soft capsule preparation and production process. While ensuring that the automatic feeding device can operate normally and continuously, it can also effectively improve the preparation and production efficiency of soft capsules.

[0047] Embodiment 4:

[0048] Specifically, this embodiment also discloses a working method of an automatic feeding device for preparing soft capsules, comprising the following steps:

[0049] Step 1: During the feeding operation when preparing soft capsules, the driving ends of the two servo electric cylinders 28 are used to control the lifting frame 4 to move downward until the bottom ends of the plurality of injection tubes 3 at the bottom of the connecting frame 6 are respectively located in the middle of the two colloid closing positions. As the two colloids are closed, the capsules are introduced into the feeding spring tube 29 through the feeding interface 2. The capsules then enter the inside of the injection tube 3 through the feeding spring tube 29 and the guide tube 15, and the synchronous injection operation of the plurality of soft capsules is synchronously realized through the plurality of injection tubes 3.

[0050] Step 2, when performing the capsule injection operation, the output shaft of the driving motor 19 is used to control the driving gear 20 to rotate, and the driving gear 20 is used to drive the rightmost transmission gear 21 to rotate, and at the same time, the synchronous transmission of a plurality of pulleys 22 is used to allow the plurality of transmission gears 21 to rotate synchronously, and the plurality of transmission gears 21 are used to drive the plurality of spiral guide racks 17 inside the guide tube 15 to rotate synchronously. Since the bottom ends of the plurality of spiral guide racks 17 are respectively engaged with the top ends of the plurality of spiral guide racks 16, the plurality of spiral guide racks 16 are driven to rotate synchronously by the plurality of spiral guide racks 17. The spiral guide racks 17 rotating inside the guide tube 15 and the spiral guide racks 16 rotating inside the injection tube 3 solve the problem that the guide tube 15 and the injection tube 3 are easily blocked during the injection process. In addition, during the injection process, the two discharge channels 12 inside the injection tube 3 are used to extract the air inside the soft capsule;

[0051] Step 3. When replacing the feeding structure, the driving rod 25 is controlled to rotate by the output shaft of the servo motor 27, so that the two controlled fixed frames 24 are rotated to the horizontal position with the connecting frame 6 to be replaced, and the connecting frame 6 is controlled to be lifted between the two fixed frames 24, and the connecting rods 8 on the two fixed frames 24 are used to connect with the connecting holes 7 at the bottom of the two sides of the connecting frame 6, and at the same time, the connection holes 7 at the top of the two sides of the connecting frame 6 and the connecting rods 8 on the two connecting blocks 5 are disconnected, and then the material changing frame 23 is continued to be controlled to rotate 60°, so that the connecting frame 6 and the injection pipe 3 to be replaced are under the lifting frame 4, and the connecting rods 8 on the two connecting blocks 5 are connected with the connecting holes 7 at the top of the two sides of the connecting frame 6, and at the same time, the connecting rods 8 on the two fixed frames 24 are disconnected from the connecting holes 7 at the bottom of the two sides of the connecting frame 6, and the material changing frame 23 is controlled to rotate a certain angle to avoid the fixed frames 24 interfering with the lifting of the lifting frame 4, and the new connecting frame 6 is replaced and installed on the lifting frame 4 through the material changing frame 23.

[0052] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic feeding device for the production of soft capsules, comprising a feeding frame (1), wherein a plurality of feeding interfaces (2) are fixedly arranged on the top of the feeding frame (1), characterized in that: A material feeding assembly is arranged inside the material feeding rack (1), and a material changing assembly is also arranged inside the material feeding rack (1); The feeding assembly comprises a lifting frame (4), a connecting frame (6) and a material injection pipe (3); the lifting frame (4) is movably arranged inside the feeding frame (1), and servo electric cylinders (28) are fixedly arranged on the left and right sides of the inner wall of the feeding frame (1); the driving ends of the two servo electric cylinders (28) are respectively fixedly connected to the left and right sides of the lifting frame (4); the bottom of the lifting frame (4) is movably arranged with a connecting frame (6), and a plurality of material injection pipes (3) are fixedly arranged at the bottom of the connecting frame (6); the left and right sides of the bottom of the lifting frame (4) are fixedly arranged with connecting blocks (5), and the top of the connecting frame (6) is movably connected between the two connecting blocks (5); a plurality of material guide pipes (15) are fixedly arranged inside the lifting frame (4), and a plurality of feeding spring pipes (29) are also fixedly arranged at the top of the lifting frame (4); A material guide channel (11) is provided in the middle of the injection tube (3), and discharge channels (12) are provided on both sides of the injection tube (3). A spiral material guide frame (16) is rotatably provided inside the injection tube (3) and located inside the material guide channel (11). A spiral material guide frame (17) is rotatably provided inside the material guide tube (15), and the bottom of the spiral material guide frame (17) is movably connected to the top of the spiral material guide frame (16).

2. The automatic feeding device for soft capsule production according to claim 1, characterized in that: The top ends of the plurality of feeding spring tubes (29) are respectively connected to the interior of the plurality of feeding interfaces (2), and the bottom ends of the plurality of feeding spring tubes (29) are respectively connected to the interior of the plurality of material guide tubes (15), and the bottom ends of the plurality of material guide tubes (15) are respectively connected to the interior of the plurality of injection tubes (3).

3. The automatic feeding device for soft capsule production according to claim 1, characterized in that: A recovery frame (13) is also fixedly arranged inside the lifting frame (4), and a plurality of recovery pipes (14) are arranged inside the recovery frame (13) through a micro pump, and the bottom ends of the plurality of recovery pipes (14) and the bottom ends of the plurality of material guide pipes (15) extend to the bottom of the lifting frame (4), and a plurality of material guide holes (9) matching with the bottom ends of the material guide pipes (15) are arranged on the top of the connecting frame (6), and a plurality of material discharge holes (10) matching with the bottom ends of the recovery pipes (14) are also arranged on the top of the connecting frame (6).

4. The automatic feeding device for soft capsule production according to claim 1, characterized in that: A driving frame (18) is fixedly arranged at the top of the inner wall of the lifting frame (4), and a driving motor (19) is also fixedly arranged on one side of the driving frame (18). A transmission gear (21) is rotatably arranged inside the driving frame (18), and a plurality of transmission gears (21) are fixedly arranged at the bottom with pulleys (22), and the surfaces of the plurality of pulleys (22) are connected by belt transmission. A driving gear (20) is fixedly arranged at one end of the output shaft of the driving motor (19), and the surface of the driving gear (20) meshes with the surface of the rightmost transmission gear (21) for transmission. The surfaces of the plurality of transmission gears (21) other than the rightmost transmission gear (21) extend to the inside of the plurality of material guide pipes (15), and the surfaces of the plurality of transmission gears (21) mesh with the top of the spiral material guide frame 2 (17) inside the plurality of material guide pipes (15) for transmission.

5. The automatic feeding device for soft capsule production according to claim 1, characterized in that: The material changing assembly comprises a material changing rack (23), the left and right sides of the inner wall of the material feeding rack (1) are both provided with a rotating groove (30), and the inside of the two rotating grooves (30) are both provided with a material changing rack (23) for rotation, and three fixing racks (24) are fixedly provided inside the two material changing racks (23), and the three fixing racks (24) are arranged at equal angles with respect to the central axis of the material changing rack (23), one side of the fixing rack (24) and one side of the connecting block (5) are both movably provided with a connecting rod (8) through a micro-electric cylinder, and the upper and lower sides of both sides of the connecting rack (6) are both provided with connecting holes (7) matching with the connecting rod (8), and the connecting rack (6) to be replaced is movably arranged between the two fixing racks (24).

6. The automatic feeding device for soft capsule production according to claim 5, characterized in that: A driving rod (25) is rotatably arranged on the upper part of the feeding rack (1), and driven gears (26) are fixedly arranged on the left and right sides of the surface of the driving rod (25), and the surfaces of the two driven gears (26) are respectively meshed with the surfaces of the two material changing racks (23) for transmission. A servo motor (27) is fixedly arranged on the right side of the feeding rack (1), and one end of the output shaft of the servo motor (27) is fixedly connected to the right end of the driving rod (25) through a coupling.

7. An automatic feeding device for soft capsule production according to any one of claims 1 to 6, characterized in that: The working method of the automatic feeding device for preparing soft capsules comprises the following steps: Step 1: During the feeding operation of preparing soft capsules, the driving ends of the two servo electric cylinders (28) are used to control the lifting frame (4) to move downward until the bottom ends of the plurality of injection tubes (3) at the bottom of the connecting frame (6) are respectively located in the middle of the two colloid closing positions. As the two colloids are closed, capsules are introduced into the feeding spring tube (29) through the feeding interface (2). The capsules then enter the inside of the injection tube (3) through the feeding spring tube (29) and the guide tube (15), and the synchronous injection operation of the plurality of soft capsules is synchronously realized through the plurality of injection tubes (3); Step 2: When the capsule is injected, the output shaft of the driving motor (19) is used to control the driving gear (20) to rotate, and the driving gear (20) drives the rightmost transmission gear (21) to rotate. At the same time, the synchronous transmission of a plurality of pulleys (22) is used to make the plurality of transmission gears (21) rotate synchronously, and the plurality of transmission gears (21) are used to drive the spiral guide frames (17) inside the plurality of guide tubes (15) to rotate synchronously. Since the bottom ends of the plurality of spiral guide frames (17) are respectively connected to the plurality of The top end of a spiral material guide frame (16) is clamped, so that a plurality of spiral material guide frames (17) drive a plurality of spiral material guide frames (16) to rotate synchronously, and the spiral material guide frame (17) rotating inside the material guide pipe (15) and the spiral material guide frame (16) rotating inside the injection pipe (3) are used to solve the problem that the material guide pipe (15) and the injection pipe (3) are easily blocked during the injection process. In addition, during the injection process, the air inside the soft capsule is extracted by using two discharge channels (12) inside the injection pipe (3); Step 3: When replacing the feeding structure, the output shaft of the servo motor (27) is used to control the driving rod (25) to rotate, so that the two controlled fixed frames (24) are rotated to the horizontal position with the connecting frame (6) to be replaced, and the connecting frame (6) is controlled to be lifted between the two fixed frames (24). The connecting rods (8) on the two fixed frames (24) are connected to the connecting holes (7) at the bottom of the two sides of the connecting frame (6), and the connection holes (7) at the top of the two sides of the connecting frame (6) and the connecting rods (8) on the two connecting blocks (5) are disconnected, and then the material replacement frame is controlled. (23) is rotated 60° so that the connecting frame (6) and the injection pipe (3) to be replaced are located below the lifting frame (4), and the connecting rods (8) on the two connecting blocks (5) are connected to the connecting holes (7) on both sides of the connecting frame (6). At the same time, the connection between the connecting rods (8) on the two fixed frames (24) and the connecting holes (7) on both sides of the connecting frame (6) is released, and the material changing frame (23) is controlled to rotate a certain angle to avoid the fixed frame (24) interfering with the lifting of the lifting frame (4). The new connecting frame (6) is replaced and installed on the lifting frame (4) through the material changing frame (23).

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