Structure for improving bagging efficiency

Abstract

The invention relates to the technical field of bagging equipment, in particular to a structure for improving bagging efficiency, which comprises an expanded mounting frame and a bag opening expanded frame, a motor is mounted on the outer wall of the expanded mounting frame, one end of an output shaft of the motor is connected with a bidirectional screw through a coupler, and sliding frames are connected to the outer walls of the two sides of the bidirectional screw through threads. The outer walls of the two sides of the bottom end of the expanded mounting frame are fixedly connected with fixing rods. The expanding mechanism is arranged on the inner wall of the bag opening expanding frame; expansion force of the expansion air bag is evenly distributed on all parts of the bag opening, local excessive expansion or insufficient expansion is avoided, the flexible material of the expansion air bag can adapt to the shape of the bag opening, soft expansion force is provided, and the situation that some parts of the bag opening are expanded insufficiently while other parts are expanded excessively is avoided; the problem that a bag opening is torn or damaged possibly due to uneven expansion force is solved, the expansion force can be adjusted according to specific conditions through an expansion air bag expansion structure, and the bagging efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of bagging equipment, in particular to a structure for increasing bagging efficiency. Background Art

[0002] Valve bags are currently widely used as filling packaging bags. They are widely used in the packaging of powdered or granular solid materials and flexible items such as edible powder, chemical powder, fertilizer, synthetic materials, explosives, grain, salt, minerals, etc. The valve bags are fed from the top or bottom and become square after filling. They are easy to transport and have high filling efficiency.

[0003] After the bag is sucked up, clamped, bag mouth is sucked and supported by the bagging machine, the gripper puts the bag on the material nozzle of the packaging machine. However, during this process, the bag mouth is not opened or is not round, which increases the failure rate of bagging. The bag mouth may expand unevenly, resulting in insufficient expansion of some parts of the bag mouth and excessive expansion of other parts. The uneven expansion force may cause the bag mouth to be torn or damaged. In addition, packaging bags of different sizes and materials may require different expansion forces. The expansion structure makes it difficult to adjust the expansion force according to the specific situation, which reduces the bagging efficiency. Summary of the invention

[0004] The object of the present invention is to provide a structure for increasing bagging efficiency to solve the problems raised in the above background technology.

[0005] The technical solution of the present invention is: a structure for increasing bagging efficiency, comprising an expansion mounting frame and a bag opening expansion frame, a motor is mounted on the outer wall of the expansion mounting frame, one end of the motor output shaft is connected to a bidirectional screw through a coupling, both sides of the bidirectional screw are connected to a sliding frame through threads, and both sides of the outer walls of the bottom end of the expansion mounting frame are fixedly connected to a fixing rod, and further comprising;

[0006] An expansion mechanism, the expansion mechanism is arranged on the inner wall of the bag opening expansion frame;

[0007] The expansion mechanism comprises a U-shaped frame fixedly connected to the inner wall of the bag mouth expansion frame, the outer walls on both sides of the top of the U-shaped frame are fixedly connected to the fixed frame, the bottom inner wall of the sliding frame is rotatably provided with a rotating shaft 1, the inner wall of the fixed frame is rotatably provided with a rotating shaft 2, the outer walls of the rotating shaft 1 and the rotating shaft 2 are fixedly connected with a movable rod, the bottom inner wall of the bag mouth expansion frame is fixedly connected with a mounting plate, the top outer wall of the mounting plate is installed with an air pump, the outer wall of the bag mouth expansion frame is provided with a conical groove, the inner wall of the conical groove is fixedly connected with a conical plate, and the outer wall of the conical plate is fixedly connected with an expansion airbag;

[0008] An auxiliary mechanism, the auxiliary mechanism being arranged on the outer wall of the bag opening expansion frame;

[0009] The auxiliary mechanism includes a rotating part, the bottom outer wall of the rotating part is fixedly connected to an annular frame, the top outer wall of the bag opening expansion frame is provided with an annular groove, the annular frame is slidably connected to the inner wall of the annular groove, and the inner wall of the rotating part is fixedly connected to a rack.

[0010] Preferably, circular grooves are provided on the inner walls on both sides of the top of the bag opening expansion frame, a rotating rod 1 is rotatably provided on the inner wall of the circular groove, a gear 1 is fixedly connected to the outer wall of the rotating rod 1, a conical gear 1 is fixedly connected to the top outer wall of the rotating rod 1, circular holes are provided on the outer walls on both sides of the U-shaped frame, a rotating rod 2 is rotatably provided on the inner wall of the circular hole, a conical gear 2 is fixedly connected to the outer wall on one side of the rotating rod 2, a gear 2 is fixedly connected to the outer wall on the other side of the rotating rod 2, a rack 2 is fixedly connected to the bottom outer wall of the fixed rod, a control button is installed on the bottom outer wall of the fixed rod, the conical gear 1 is meshed with the conical gear 2, the gear 1 is meshed with the rack 1, and the positions of the gear 2 and the rack 2 are adapted.

[0011] Preferably, a rectangular hole is formed on the top outer wall of the U-shaped frame, the fixing rod is slidably connected to the inner wall of the rectangular hole, and a plurality of auxiliary grooves are formed on the outer wall of the rotating part, the auxiliary grooves are distributed in a circular array, and the auxiliary grooves are arranged in an arc shape.

[0012] Preferably, a connecting hole 1 is formed on an outer wall on one side of the top of the conical plate, an inflation tube is connected to the output end of the air pump, the inflation tube is plugged into the inner wall of the connecting hole 1, a control valve 1 is installed on the inner wall of the inflation tube, a connecting hole 2 is formed on an outer wall on one side of the bottom of the conical plate, an air outlet pipe is connected to the inner wall of the connecting hole 2, a control valve 2 is installed on the inner wall of the air outlet pipe, and the air outlet pipe is connected to the expansion airbag.

[0013] Preferably, the bag mouth expansion frame and the rotating part are arranged in a conical shape, the bottom inner wall of the bag mouth expansion frame is fixedly connected with an exhaust pipe, the exhaust pipe is connected with the exhaust pipe, the expanded airbag is arranged in a conical shape, and the size of the expanded airbag and the conical plate are adapted to the conical groove.

[0014] Preferably, a conical portion is fixedly connected to the bottom outer wall of the bag mouth expansion frame, the conical portion is adapted to the size of the bag mouth expansion frame, the conical portion is fixedly connected to the bottom outer wall of the exhaust pipe, a plurality of exhaust holes are opened on the bottom outer wall of the conical portion, the exhaust holes are distributed in a circular array, and the exhaust holes are arranged at an incline.

[0015] Preferably, a slide groove is provided on the outer wall of the bottom end of the expansion mounting frame, the sliding frame is slidably connected to the inner wall of the slide groove, positioning holes are provided at the four corners of the outer wall of the top end of the expansion mounting frame, and the rack is arranged in a ring shape.

[0016] Preferably, the control button is electrically connected to control valve one, control valve two and the air pump, the control button is adapted to the position of the U-shaped frame, mounting holes are provided on the outer walls on both sides of the top of the rotating part, and photoelectric sensors are installed on the inner walls of the mounting holes.

[0017] The present invention provides a structure for increasing bagging efficiency by improvement, which has the following improvements and advantages compared with the prior art:

[0018] First, the present invention is provided with an expansion mounting frame, a bidirectional screw, a bag opening expansion frame, an expansion airbag, a rotating part and a movable rod. The second half of the process in which the bag opening expansion frame descends and expands can also drive the rotating part to rotate through the linkage structure of the gear rack, so as to apply a uniform expansion force to the bag opening, ensuring that each part of the bag opening is fully expanded. After the bag opening expansion frame is completely descended and expanded, the control button is pressed, and the air pump inflates the expansion airbag to further expand the packaging bag uniformly. The expansion force of the expansion airbag is evenly distributed on various parts of the bag opening to avoid local over-expansion or under-expansion. The flexible material of the expansion airbag can adapt to the shape of the bag opening and provide a gentle expansion force to avoid under-expansion of some parts of the bag opening and over-expansion of other parts. The uneven expansion force may cause the bag opening to be torn or damaged. The expansion structure of the expansion airbag can adjust the expansion force according to the specific situation, thereby improving the bagging efficiency.

[0019] Second, the present invention is provided with a rotating part, an auxiliary groove and a photoelectric sensor. Each auxiliary groove will contact different parts of the bag opening when rotating, ensuring that the entire bag opening is evenly expanded. Mounting holes are provided on both sides of the rotating part, and photoelectric sensors are provided in the mounting holes. The photoelectric sensor has a light-emitting element inside for emitting light, and another element for receiving reflected light. When two photoelectric signals are simultaneously irradiated to the bag opening to ensure that the bag opening is in an open state, the bagging efficiency is further improved.

[0020] Thirdly, the present invention is provided with exhaust holes, tapered portions and exhaust holes, and the exhaust holes are arranged obliquely, so that the ejected air blows toward the packaging bag, further assisting the expansion of the packaging bag. The ejected air can also effectively disperse static electricity and dust around the bag opening, keep the bag opening clean, and improve the safety of the bagging structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments:

[0022] Figure 1 It is a schematic cross-sectional view of the overall structure of the present invention;

[0023] Figure 2 is a schematic diagram of a bidirectional screw of the present invention;

[0024] Figure 3is a schematic diagram of the rotating part of the present invention;

[0025] Figure 4 is a schematic diagram of a conical tooth of the present invention;

[0026] Figure 5 It is a schematic diagram of a U-shaped frame of the present invention;

[0027] Figure 6 It is an exploded schematic diagram of the bag opening expansion frame connection structure of the present invention;

[0028] Figure 7 is a schematic diagram of an air pump of the present invention;

[0029] Figure 8 It is a schematic cross-sectional view of an exhaust pipe of the present invention.

[0030] Description of reference numerals:

[0031] 1. Expanded mounting frame; 2. Motor; 3. Sliding frame; 4. Bidirectional screw; 5. Fixed rod; 6. Movable rod; 7. Photoelectric sensor; 8. Rotating part; 9. Bag opening expansion frame; 10. Expanded airbag; 11. Exhaust pipe; 12. Conical part; 13. Mounting plate; 14. Air pump; 15. U-shaped frame; 16. Rotating shaft 1; 17. Rotating shaft 2; 18. Fixed frame; 19. Auxiliary groove; 20. Rack 1; 21. Gear 1; 22. Rotating rod 1; 23. Ring frame; 24. Conical gear 1; 25. Conical gear 2; 26. Rotating rod 2; 27. Gear 2; 28. Control valve 1; 29. ​​Rack 2; 30. Control button; 31. Conical plate; 32. Inflation tube; 33. Exhaust pipe; 34. Exhaust hole; 35. Control valve 2. DETAILED DESCRIPTION

[0032] The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are clearly and completely described. 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.

[0033] The present invention provides a structure for increasing bagging efficiency through improvement. The technical solution of the present invention is:

[0034] like Figure 1-Figure 8 As shown, a structure for increasing bagging efficiency includes an expansion mounting frame 1 and a bag opening expansion frame 9, a motor 2 is mounted on the outer wall of the expansion mounting frame 1, one end of the output shaft of the motor 2 is connected to a bidirectional screw 4 through a coupling, both sides of the outer wall of the bidirectional screw 4 are connected to a sliding frame 3 through threads, and both sides of the outer wall of the bottom end of the expansion mounting frame 1 are fixedly connected to a fixing rod 5, and also includes;

[0035] An expansion mechanism, the expansion mechanism is arranged on the inner wall of the bag opening expansion frame 9;

[0036] The expansion mechanism includes a U-shaped frame 15 fixedly connected to the inner wall of the bag mouth expansion frame 9, the outer walls on both sides of the top of the U-shaped frame 15 are fixedly connected to the fixed frame 18, the bottom inner wall of the sliding frame 3 is rotatably provided with a rotating shaft 16, the inner wall of the fixed frame 18 is rotatably provided with a rotating shaft 2 17, the outer walls of the rotating shaft 16 and the rotating shaft 2 17 are fixedly connected with a movable rod 6, the bottom inner wall of the bag mouth expansion frame 9 is fixedly connected with a mounting plate 13, the top outer wall of the mounting plate 13 is installed with an air pump 14, the outer wall of the bag mouth expansion frame 9 is provided with a conical groove, the inner wall of the conical groove is fixedly connected with a conical plate 31, and the outer wall of the conical plate 31 is fixedly connected with an expansion airbag 10;

[0037] Auxiliary mechanism, the auxiliary mechanism is arranged on the outer wall of the bag opening expansion frame 9;

[0038] The auxiliary mechanism includes a rotating part 8, the bottom outer wall of the rotating part 8 is fixedly connected to a ring frame 23, the top outer wall of the bag opening expansion frame 9 is provided with a ring groove, the ring frame 23 is slidably connected to the inner wall of the ring groove, and the inner wall of the rotating part 8 is fixedly connected to a rack 20.

[0039] Further, circular grooves are provided on the inner walls of both sides of the top of the bag opening expansion frame 9, and a rotating rod 22 is rotatably provided on the inner wall of the circular groove, and a gear 21 is fixedly connected to the outer wall of the rotating rod 22, and a conical gear 24 is fixedly connected to the top outer wall of the rotating rod 22, and circular holes are provided on the outer walls of both sides of the U-shaped frame 15, and a rotating rod 26 is rotatably provided on the inner wall of the circular hole, and a conical gear 25 is fixedly connected to the outer wall of one side of the rotating rod 26, and a gear 27 is fixedly connected to the outer wall of the other side of the rotating rod 26, and a rack 29 is fixedly connected to the bottom outer wall of the fixed rod 5, and a control button 30 is installed on the bottom outer wall of the fixed rod 5, and the conical gear 24 is meshed with the conical gear 25, and the gear 21 is meshed with the rack 20. Meshing, the positions of gear 27 and rack 29 are adapted, a rectangular hole is provided on the top outer wall of the U-shaped frame 15, the fixing rod 5 is slidably connected to the inner wall of the rectangular hole, a plurality of auxiliary grooves 19 are provided on the outer wall of the rotating part 8, the auxiliary grooves 19 are distributed in a ring array, and the auxiliary grooves 19 are arranged in an arc shape, a connecting hole 1 is provided on the outer wall on one side of the top of the conical plate 31, an inflation tube 32 is plugged into the inner wall of the connecting hole 1, a control valve 1 28 is installed on the inner wall of the inflation tube 32, a connecting hole 2 is provided on the outer wall on one side of the bottom of the conical plate 31, an air outlet pipe 33 is plugged into the inner wall of the connecting hole 2, a control valve 2 35 is installed on the inner wall of the air outlet pipe 33, and the air outlet pipe 33 is connected to the expanded airbag 10.

[0040] Furthermore, the bag mouth expansion frame 9 and the rotating portion 8 are arranged in a conical shape, and the bottom inner wall of the bag mouth expansion frame 9 is fixedly connected with an exhaust pipe 11, and the exhaust pipe 11 is connected with the exhaust pipe 33. The expanded airbag 10 is arranged in a conical shape, and the expanded airbag 10 and the conical plate 31 are adapted to the size of the conical groove. The bottom outer wall of the bag mouth expansion frame 9 is fixedly connected with a conical portion 12, and the conical portion 12 is adapted to the size of the bag mouth expansion frame 9. The conical portion 12 is fixedly connected to the outer wall of the bottom end of the exhaust pipe 11, and a plurality of exhaust holes 34 are opened on the outer wall of the bottom end of the conical portion 12. The exhaust holes 34 are distributed in a circular array, and the exhaust holes 34 are arranged at an angle.

[0041] Furthermore, a slide groove is provided on the outer wall of the bottom end of the expansion mounting frame 1, and the sliding frame 3 is slidably connected to the inner wall of the slide groove. Positioning holes are provided at the four corners of the outer wall of the top end of the expansion mounting frame 1. The rack 20 is arranged in a ring shape, and the control button 30 is electrically connected to the control valve 28, the control valve 2 35 and the air pump 14. The control button 30 is adapted to the position of the U-shaped frame 15. Mounting holes are provided on the outer walls on both sides of the top end of the rotating part 8. The inner wall of the mounting hole is installed with a photoelectric sensor 7. The photoelectric sensor 7 is arranged in the mounting hole. The photoelectric sensor 7 has a light-emitting element inside for emitting light, and the other element is used to receive the reflected light. When the two photoelectric signals shine on the bag opening at the same time to ensure that the bag opening is in an open state, the bagging action can continue. Otherwise, the gripper holding the packaging bag is opened, the bag falls to the ground, and the previous operation is performed again.

[0042] Working principle: In the process of automatic bagging, the packaging bag that needs to be expanded is clamped by the packaging bag gripper and moved to the bottom of the bag expansion frame 9 for expansion processing, the motor 2 on the expansion mounting frame 1 is started, and the bidirectional screw 4 rotates to drive the sliding frames 3 on both sides to move closer, and the sliding frame 3 cooperates with the rotating shaft 16 to drive the movable rod 6 to rotate, thereby cooperating with the rotating shaft 2 17 and the fixed frame 18 to press the U-shaped frame 15, and the U-shaped frame 15 drives the bag expansion frame 9 to descend, and the bag expansion frame 9 cooperates with the conical part 12 at the bottom to perform preliminary expansion on the packaging bag. When the bag mouth expansion frame 9 and the tapered portion 12 are lowered to the second half of the process, the gear 27 connected to the rotating rod 26 on the U-shaped frame 15 is meshed with the rack 29 at the bottom of the fixed rod 5, and the gear 27 drives the rotating rod 26 to rotate, thereby cooperating with the meshing conical gear 1 24 and the conical gear 25 to drive the rotating rod 1 22 to rotate, and the rotating rod 1 22 drives the gear 1 21 to rotate, thereby cooperating with the meshing rack 1 20 to drive the rotating portion 8 to rotate, and the rotating portion 8 rotates on the top of the bag mouth expansion frame 9 through the annular frame 23, and the packaging that has been initially expanded is The bag is expanded again, and a uniform expansion force is applied to the bag opening to ensure that every part of the bag opening is fully expanded. When the bag opening expansion frame 9 is completely lowered and expanded, the U-shaped frame 15 presses the control button 30 at the bottom of the fixed rod 5, and the control module receives the information to start the air pump 14, and the control valve 1 28 of the inflation tube 32 is opened, and the control valve 2 35 of the outlet tube 33 is closed. The air pump 14 sends air into the expansion airbag 10. The expansion airbag 10 on the outer wall of the bag opening expansion frame 9 is set in a conical shape. At the beginning, the expansion airbag 1 0 is flush with the corners of the bag opening expansion frame 9. After inflation, the expansion airbag 10 bulges, and the packaging bag is further expanded evenly. The expansion force of the expansion airbag 10 is evenly distributed on various parts of the bag opening to avoid local over-expansion or under-expansion. The flexible material of the expansion airbag 10 can adapt to the shape of the bag opening and provide a gentle expansion force. The motor 2 controls the bidirectional screw 4 to rotate in the opposite direction. When the bag opening expansion frame 9 is reset, the control button 30 is released, the control valve 1 28 is closed, and the control valve 2 35 is opened. The air in the expansion airbag 10 is discharged and restored to its original shape.

[0043] The auxiliary grooves 19 arranged on the outer wall of the rotating part 8 are provided with chamfered corners to uniformly contact the bag opening. The outer wall of the rotating part 8 is provided with a circular array of auxiliary grooves 19. Each auxiliary groove 19 will contact different parts of the bag opening during rotation to ensure that the entire bag opening is evenly expanded. Mounting holes are arranged on both sides of the rotating part 8, and photoelectric sensors 7 are arranged in the mounting holes. The photoelectric sensor 7 has a light-emitting element inside for emitting light, and another element for receiving reflected light. When the two photoelectric signals shine on the bag opening at the same time to ensure that the bag opening is in an open state, the bagging action can continue. Otherwise, the gripper holding the packaging bag opens, the bag falls to the ground, and the previous operation is performed again.

[0044] The air discharged from the air outlet pipe 33 enters the exhaust pipe 11 and is then discharged through the exhaust holes 34 in the bottom circular array. The exhaust holes 34 are arranged at an angle, and the ejected air blows toward the packaging bag, further assisting the expansion of the packaging bag. The ejected air can also effectively blow away the static electricity and dust around the bag opening to keep the bag opening clean.

[0045] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacement of the above technical features. Matters not covered in the present invention belong to the common knowledge of those skilled in the art.

Claims

1. A structure for increasing bagging efficiency, comprising an expansion mounting frame (1) and a bag opening expansion frame (9), wherein a motor (2) is mounted on the outer wall of the expansion mounting frame (1), one end of the output shaft of the motor (2) is connected to a bidirectional screw (4) via a coupling, and both side outer walls of the bidirectional screw (4) are connected to a sliding frame (3) via threads, and both side outer walls of the bottom end of the expansion mounting frame (1) are fixedly connected to a fixing rod (5), characterized in that: Also includes; An expansion mechanism, the expansion mechanism being arranged on the inner wall of the bag opening expansion frame (9); The expansion mechanism comprises a U-shaped frame (15) fixedly connected to the inner wall of the bag mouth expansion frame (9), the outer walls on both sides of the top of the U-shaped frame (15) are fixedly connected to a fixed frame (18), the bottom inner wall of the sliding frame (3) is rotatably provided with a rotating shaft (16), the inner wall of the fixed frame (18) is rotatably provided with a rotating shaft (17), the outer walls of the rotating shaft (16) and the rotating shaft (17) are fixedly connected with a movable rod (6), the bottom inner wall of the bag mouth expansion frame (9) is fixedly connected with a mounting plate (13), the top outer wall of the mounting plate (13) is installed with an air pump (14), the outer wall of the bag mouth expansion frame (9) is provided with a conical groove, the inner wall of the conical groove is fixedly connected with a conical plate (31), and the outer wall of the conical plate (31) is fixedly connected with an expansion air bag (10); An auxiliary mechanism, wherein the auxiliary mechanism is arranged on the outer wall of the bag opening expansion frame (9); The auxiliary mechanism comprises a rotating part (8), the bottom outer wall of the rotating part (8) is fixedly connected to an annular frame (23), the top outer wall of the bag opening expansion frame (9) is provided with an annular groove, the annular frame (23) is slidably connected to the inner wall of the annular groove, and the inner wall of the rotating part (8) is fixedly connected to a rack (20).

2. A structure for increasing bagging efficiency according to claim 1, characterized in that: The inner walls of both sides of the top of the bag opening expansion frame (9) are provided with circular grooves, the inner walls of the circular grooves are rotatably provided with a rotating rod (22), the outer wall of the rotating rod (22) is fixedly connected with a gear (21), the outer wall of the top of the rotating rod (22) is fixedly connected with a conical gear (24), the outer walls of both sides of the U-shaped frame (15) are provided with circular holes, the inner walls of the circular holes are rotatably provided with a rotating rod (26), and the outer wall of one side of the rotating rod (26) is fixedly connected with a gear (21). A conical tooth 2 (25) is fixedly connected thereto; a gear 2 (27) is fixedly connected to the outer wall of the other side of the rotating rod 2 (26); a rack 2 (29) is fixedly connected to the bottom outer wall of the fixed rod (5); a control button (30) is installed on the bottom outer wall of the fixed rod (5); the conical tooth 1 (24) is meshed with the conical tooth 2 (25); the gear 1 (21) is meshed with the rack 1 (20); and the positions of the gear 2 (27) and the rack 2 (29) are adapted to each other.

3. A structure for increasing bagging efficiency according to claim 2, characterized in that: A rectangular hole is provided on the top outer wall of the U-shaped frame (15), the fixing rod (5) is slidably connected to the inner wall of the rectangular hole, and a plurality of auxiliary grooves (19) are provided on the outer wall of the rotating part (8), the auxiliary grooves (19) are distributed in a ring array, and the auxiliary grooves (19) are arranged in an arc shape.

4. A structure for increasing bagging efficiency according to claim 3, characterized in that: A connecting hole 1 is formed on an outer wall of one side of the top of the conical plate (31); an inflation tube (32) is plugged into the output end of the air pump (14); the inflation tube (32) is plugged into the inner wall of the connecting hole 1; a control valve 1 (28) is installed on the inner wall of the inflation tube (32); a connecting hole 2 is formed on an outer wall of one side of the bottom of the conical plate (31); an air outlet tube (33) is plugged into the inner wall of the connecting hole 2; a control valve 2 (35) is installed on the inner wall of the air outlet tube (33); the air outlet tube (33) is connected to the expansion airbag (10).

5. A structure for increasing bagging efficiency according to claim 1, characterized in that: The bag opening expansion frame (9) and the rotating part (8) are arranged in a conical shape, the bottom inner wall of the bag opening expansion frame (9) is fixedly connected with an exhaust pipe (11), the exhaust pipe (11) is communicated with an exhaust pipe (33), the expansion air bag (10) is arranged in a conical shape, and the expansion air bag (10) and the conical plate (31) are adapted to the size of the conical groove.

6. A structure for increasing bagging efficiency according to claim 5, characterized in that: The bottom outer wall of the bag mouth expansion frame (9) is fixedly connected with a conical portion (12), the conical portion (12) is adapted to the size of the bag mouth expansion frame (9), the conical portion (12) is fixedly connected to the bottom outer wall of the exhaust pipe (11), the bottom outer wall of the conical portion (12) is provided with a plurality of exhaust holes (34), the exhaust holes (34) are distributed in a ring array, and the exhaust holes (34) are arranged obliquely.

7. A structure for increasing bagging efficiency according to claim 1, characterized in that: The bottom outer wall of the expansion mounting frame (1) is provided with a slide groove, the sliding frame (3) is slidably connected to the inner wall of the slide groove, positioning holes are provided at the four corners of the top outer wall of the expansion mounting frame (1), and the rack (20) is arranged in a ring shape.

8. A structure for increasing bagging efficiency according to claim 4, characterized in that: The control button (30) is electrically connected to the control valve 1 (28), the control valve 2 (35) and the air pump (14); the control button (30) is adapted to the position of the U-shaped frame (15); the outer walls on both sides of the top of the rotating part (8) are provided with mounting holes; the inner walls of the mounting holes are provided with photoelectric sensors (7).

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