Multifunctional pneumatic type nut quantitative vacuum bag sealing and packaging all-in-one machine with grading structure

Abstract

The invention relates to the field of packaging equipment, in particular to a multifunctional pneumatic type nut quantitative vacuum bag sealing and packaging all-in-one machine with a grading structure, a cylindrical upper groove body is movably installed in the upper end of a lower groove body, a plurality of screening holes are evenly distributed in the bottom wall of the upper groove body, and a vibration motor is installed on the upper groove body; the bottom wall of the upper groove body is in an inverted cone shape, a discharging pipe which extends downwards and penetrates out of the outer side of the lower groove body is arranged in the center of the bottom of the upper groove body, a snail-shaped material guiding plate is fixedly installed on the inner side of the bottom wall of the upper groove body, and the discharging pipe is located in the center of the material guiding plate. The vibrating motor drives the upper groove body to vibrate, so that nuts roll towards the discharging pipe along the inverted-cone-shaped bottom wall of the upper groove body, dust, impurities, broken nuts and small-particle nuts fall into the lower groove body downwards through the screening holes in the bottom wall of the upper groove body, large-particle nuts are discharged through the discharging pipe, and therefore the nuts are screened in advance before being packaged.

Description

Technical Field

[0001] The invention relates to the field of packaging equipment, and in particular to a multifunctional pneumatic nut quantitative vacuum bag sealing and packaging integrated machine with a grading structure. Background Art

[0002] When nuts are sold, they need to be packed into packaging bags, usually plastic bags.

[0003] In the prior art, the utility model patent with application number CN202210778648.6 discloses a bagging and loading device for packaging walnuts, including a workbench and a conveyor belt arranged on the workbench, a loading seat is installed on the conveyor belt, and a bag binding assembly is provided on the loading seat; a hanging seat is installed on the workbench, a storage box is installed on the upper part of the hanging seat, and a discharge assembly is provided at the lower part of the storage box; a through groove is provided in the middle of the storage box, and a support rail is provided at the lower end of the storage box; the discharge assembly includes an upper blocking plate slidably installed on the through groove and a lower blocking plate slidably installed on the support rail. When bagging, the upper blocking plate slides to the left and the lower blocking plate slides to the right, the upper blocking plate first closes the middle of the storage box, and then the lower blocking plate opens the lower end of the storage box, so that a certain amount of walnuts in the storage box fall into the packaging bag, and the bagging is completed.

[0004] However, the nuts are often mixed with dust, impurities and nut crumbs before packaging. The above-mentioned bag opening and loading equipment does not screen the nuts before packaging, which causes dust, impurities and nut crumbs to mix into the packaging, affecting the quality of the nuts. Summary of the invention

[0005] The object of the present invention is to provide a multifunctional pneumatic nut quantitative vacuum bag packaging integrated machine with a grading structure, which can screen out dust impurities, nut crumbs and nuts with smaller particles before packaging to solve the defects mentioned in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A multifunctional pneumatic nut quantitative vacuum bag sealing and packaging integrated machine with a grading structure comprises a lower trough body, a stand is fixedly installed at the bottom of the lower trough body, a cylindrical upper trough body is movably installed in the upper end of the lower trough body, a plurality of screening holes are evenly distributed on the bottom wall of the upper trough body, and a vibration motor is installed on the upper trough body; the bottom wall of the upper trough body is in an inverted cone shape, a discharge pipe extending downward and passing through the outer side of the lower trough body is provided at the bottom center of the upper trough body, a volute-shaped guide plate is fixedly installed on the inner side of the bottom wall of the upper trough body, and the discharge pipe is located at the center of the guide plate; the lower end of the discharge pipe is connected to a quantitative discharge mechanism, a bag-holding mechanism is provided below the quantitative discharge mechanism, a conveyor is provided below the bag-holding mechanism, and a sealing mechanism is provided on the conveyor downstream of the bag-holding mechanism.

[0008] As a further improvement, a lower support plate is fixedly mounted on the outer wall of the lower trough body, an upper support plate located above the lower support plate is fixedly mounted on the outer wall of the upper trough body, and a spring is connected between the lower support plate and the upper support plate.

[0009] As a further improvement, the quantitative discharging mechanism includes a horizontal plate fixedly mounted on the vertical frame, a vertically extending quantitative tube fixedly mounted on the horizontal plate, the upper end of the quantitative tube and the lower end of the discharge tube being connected by a hose; a first plug plate for blocking the material in the quantitative tube from falling is movably mounted on the quantitative tube, and a second plug plate for blocking the material in the quantitative tube from falling is movably mounted on the quantitative tube located below the first plug plate, and the first plug plate and the second plug plate are respectively driven by pneumatic components to insert or withdraw the quantitative tube.

[0010] As a further improvement, the bag-holding mechanism includes a mounting frame located below the horizontal plate and driven to rise and fall by a first power device, the mounting frame being mounted with a horizontally extending mounting shaft driven to rotate by an adjusting motor, the mounting shaft being fixedly mounted with a swing arm, the plane where the swing arm is located being arranged perpendicular to the mounting shaft, the end of the swing arm away from the mounting shaft being fixedly mounted with a first mounting plate, the side of the first mounting plate facing away from the swing arm being fixedly mounted with a first suction cup, a placing plate for placing the packaging bag being provided on one side of the vertical frame, when the mounting shaft drives the first suction cup to rotate to the bottom of the first mounting plate, the placing plate is located below the first suction cup; a fixing plate is fixedly mounted on the vertical frame, the mounting frame and the fixing plate are respectively located on opposite sides of the quantitative tube, a second mounting plate driven by a second power device and moving along the radial direction of the quantitative tube is provided on a side of the fixing plate close to the quantitative tube, and a second suction cup is fixedly mounted on the side of the second mounting plate facing away from the fixing plate.

[0011] As a further improvement, the conveyor includes a frame, which is provided with a base plate and two side baffles extending upward and fixedly mounted on opposite sides of the base plate, two parallel supporting rollers are rotatably mounted between the two side baffles, one of the supporting rollers is driven to rotate by a driving device, a transversely extending conveyor belt is connected between the two supporting rollers, and a plurality of partitions evenly spaced along the length direction of the conveyor belt are fixedly mounted on the outer side of the conveyor belt, and the partitions are perpendicular to the outer surface of the conveyor belt.

[0012] As a further improvement, a plurality of flexible buffer columns are evenly distributed on the outer surface of the partition.

[0013] As a further improvement, the sealing mechanism includes a lifting plate located above the conveyor and driven to rise and fall by a third power device, and a vertically extending vacuum tube is fixedly installed on the lifting plate; two clamping plates driven by a first telescopic component to move closer to or away from each other are installed on the lifting plates located on opposite sides of the vacuum tube, and an arc groove is provided on the inner side of the clamping plate that matches the outer wall of the vacuum tube; two heat sealing plates driven by a second telescopic component to move closer to or away from each other are installed on the lifting plates located on opposite sides below the vacuum tube.

[0014] As a further improvement, a material receiving groove is provided on one side of the outer peripheral wall of the upper trough body, and the material receiving groove is directly opposite to the outer side of the outer end of the material guide plate.

[0015] As a further improvement, a discharge port is provided on one side of the bottom of the lower trough body, and the bottom wall of the lower trough body is inclined downward toward the discharge port.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The upper trough is driven to vibrate by a vibration motor, so that the nuts roll along the inverted conical bottom wall of the upper trough toward the discharge pipe. Dust, impurities, nut crumbs and nuts with smaller particles fall down into the lower trough through the screening holes on the bottom wall of the upper trough, while nuts with larger particles are discharged through the discharge pipe, thereby pre-screening the nuts before packaging, greatly improving the quality of the nuts after packaging;

[0018] 2. After the nuts enter the upper trough, they will spirally roll along the outer wall of the guide plate to the center of the upper trough, thereby extending the time the nuts stay in the upper trough and improving the screening effect of the nuts;

[0019] 3. The packaging bag at the top of the placement plate is sucked downward by the first suction cup, and the two sides of the packaging bag are pulled in opposite directions by the second suction cup and the first suction cup, so that the mouth of the packaging bag is opened and kept directly below the quantitative tube, which improves the packaging efficiency of nuts;

[0020] 4. When the packaging bag containing nuts falls down onto the conveyor belt, the partition and the front and rear side baffles can support the packaging bag on the top of the conveyor belt to prevent the packaging bag from tilting and falling onto the conveyor belt, so that the packaging bag keeps the mouth facing up and moves backward with the conveyor belt;

[0021] 5. The outer surface of the partition is evenly distributed with multiple flexible buffer columns. The friction between the buffer columns and the packaging bags can slow down the speed of the packaging bags falling, so that the packaging bags containing nuts can fall more stably onto the conveyor belt;

[0022] 6. After the lower end of the vacuum tube extends downward into the mouth of the packaging bag, the mouth of the packaging bag is closed and tightly attached to the outer wall of the vacuum extraction tube by two clamping plates. Then, the air in the packaging bag is extracted through the vacuum extraction tube. Subsequently, the packaging bag is heat-sealed by two heat-sealing plates, achieving a higher degree of mechanization in the packaging of nuts. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0025] Figure 2 is a schematic structural diagram of the lower trough body of an embodiment of the present invention;

[0026] Figure 3 is a schematic structural diagram of the upper trough body of an embodiment of the present invention;

[0027] Figure 4 is a schematic cross-sectional view of the upper trough body of an embodiment of the present invention;

[0028] Figure 5 is a schematic structural diagram of the quantitative discharging mechanism of an embodiment of the present invention;

[0029] Figure 6 is a schematic diagram when the first suction cup of an embodiment of the present invention rotates to the bottom of the first mounting plate;

[0030] Figure 7 is a schematic structural diagram of the first mounting plate of an embodiment of the present invention;

[0031] Figure 8 is a schematic structural diagram of the second mounting plate of an embodiment of the present invention;

[0032] Fig. 9 is a schematic structural diagram of the conveyor of an embodiment of the present invention;

[0033] Fig.10 is a schematic structural diagram of the partition of an embodiment of the present invention;

[0034] Fig.11 is a schematic structural diagram of the sealing mechanism of an embodiment of the present invention.

[0035] In the figure: 1-lower tank; 2-stand; 3-cylinder; 4-upper tank; 5-screening hole; 6-vibration motor; 7-lower support plate; 8-upper support plate; 9-spring; 10-discharge pipe; 11-discharge port; 12-guide plate; 13-receiving trough; 14-cross plate; 15-quantitative pipe; 16-hose; 17-first plug plate; 18-second plug plate; 19-horizontal cylinder; 20-support seat; 21-mounting frame; 22-vertical cylinder; 23-mounting shaft; 24-adjusting motor; 25-swing arm; 26-first mounting plate; 27-first suction cup; 28-placing plate; 29-packaging bag; 30-fixing plate; 31-second mounting plate; 32-first electric push rod; 33-second suction cup; 34-conveyor; 35-frame; 36-bottom plate; 37-side baffle; 38-support roller; 39-conveyor belt; 40-partition; 41-lifting plate; 42-second electric push rod; 43-vacuum tube; 44-clamping plate; 45-first small cylinder; 46-support; 47-arc groove; 48-heat sealing plate; 49-second small cylinder; 50-buffer column. DETAILED DESCRIPTION

[0036] 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.

[0037] like Figures 1 to 11 As shown, a multifunctional pneumatic nut quantitative vacuum bag sealing and packaging integrated machine with a graded structure includes a lower tank body 1, a stand 2 is fixedly installed at the bottom of the lower tank body 1, and the stand 2 is specifically four vertically extending cylinders 3 distributed in a rectangular array at the bottom of the lower tank body 1. The upper end of the cylinder 3 is bolted or welded to the bottom of the lower tank body 1 to support the lower tank body 1. A cylindrical upper tank body 4 is movably installed in the upper end of the lower tank body 1. Both the lower tank body 1 and the upper tank body 4 are circular. The upper tank body 4 is sleeved on the inner side of the upper end of the lower tank body 1. A plurality of screening holes 5 are evenly distributed on the bottom wall of the upper tank body 4. A motor mounting plate is bolted to the top of the upper tank body 4, and a vibration motor 6 is bolted to the motor mounting plate. In addition, a plurality of lower support plates 7 are fixedly installed at uniform intervals in the circumferential direction on the outer wall of the lower trough body 1, and upper support plates 8 corresponding to the lower support plates 7 are fixedly installed at uniform intervals in the circumferential direction on the outer wall of the upper trough body 4, and the upper support plates 8 are located above the corresponding lower support plates 7. A spring 9 is connected between the lower support plates 7 and the corresponding upper support plates 8, and both ends of the spring 9 are fixedly connected to the lower support plates 7 and the upper support plates 8 by bolts or welding, respectively. The arrangement of the spring 9 can increase the amplitude of vibration of the upper trough body 4 driven by the vibration motor 6.

[0038] like Figure 2 and Figure 4 As shown, the bottom wall of the upper trough body 4 is in an inverted cone shape, and a discharge pipe 10 extending downward is welded at the bottom center of the upper trough body 4. The upper end of the discharge pipe 10 is connected to the upper trough body 4, and the lower end passes downward through the bottom wall of the lower trough body 1. A reserved hole for the discharge pipe 10 to pass through is provided on the bottom wall of the lower trough body 1.

[0039] When in use, add the nuts to be packaged into the upper trough 4, turn on the vibration motor 6 and drive the upper trough 4 to vibrate, so that the nuts in the upper trough 4 roll along the inverted conical bottom wall of the upper trough 4 toward the discharge pipe 10. In the process of the nuts rolling toward the discharge pipe 10, dust impurities, nut pieces and nuts with smaller particles will fall down into the lower trough 1 through the screening holes 5 on the bottom wall of the upper trough 4, and nuts with larger particles will be discharged through the discharge pipe 10, so that the nuts are pre-screened before packaging, which greatly improves the quality of the nuts after packaging. In addition, a discharge port 11 is provided on one side of the bottom of the lower trough 1, and the bottom wall of the lower trough 1 is tilted and lowered toward the discharge port 11, so that the screened nut pieces and nuts with smaller particles can be discharged through the discharge port 11 for the next processing.

[0040] like Figure 3 As shown, a spiral-shaped curled material guide plate 12 is welded to the inner side of the bottom wall of the upper tank body 4, and the discharge pipe 10 is located at the center of the material guide plate 12. A material receiving trough 13 is welded to one side of the outer peripheral wall of the upper tank body 4, and the material receiving trough 13 is connected to the upper tank body 4, and the material receiving trough 13 is directly opposite to the outer end of the material guide plate 12. When in use, nuts to be packaged can be added to the material receiving trough 13 through a spiral feeder, and then the nuts enter the upper tank body 4 through the material receiving trough 13, and spirally roll along the outer wall of the material guide plate 12 to the center of the upper tank body 4, thereby extending the time the nuts stay in the upper tank body 4 and improving the screening effect of the nuts.

[0041] like Figure 5As shown, the lower end of the discharge pipe 10 is connected to a quantitative discharge mechanism, which includes a horizontal plate 14 fixedly mounted on four cylinders 3 by bolts, and a vertically extending quantitative tube 15 is welded on the horizontal plate 14. The quantitative tube 15 is coaxially arranged with the discharge pipe 10, and the upper end of the quantitative tube 15 is connected to the lower end of the discharge pipe 10 by a hose 16, which can avoid affecting the stability of the quantitative tube 15 when the lower tank body 1 and the discharge pipe 10 vibrate. One side of the quantitative tube 15 is provided with a socket that penetrates its side wall laterally, and two sockets are arranged opposite to each other up and down, and the horizontal plate 14 is located between the two sockets. A first plug plate 17 for blocking the material in the quantitative tube 15 from falling is installed in the upper socket for horizontal sliding, and a second plug plate 18 for blocking the material in the quantitative tube 15 from falling is installed in the lower socket for horizontal sliding. The ends of the first plug plate 17 and the second plug plate 18 extending into the quantitative tube 15 are both in an arc shape that matches the inner wall of the quantitative tube 15, and the widths of the first plug plate 17 and the second plug plate 18 are consistent with the inner diameter of the quantitative tube 15. The first plug plate 17 and the second plug plate 18 are driven by pneumatic components to insert or extract the quantitative tube 15. The pneumatic component is specifically a horizontal cylinder 19 with a piston rod extending laterally. Support seats 20 are respectively fixedly installed on the upper and lower sides of the horizontal plate 14 by bolts. The horizontal cylinders 19 are respectively installed on the two support seats 20. The cylinder bodies of the horizontal cylinders 19 are fixedly installed on the corresponding support seats 20 by bolts, and one end of the first plug plate 17 and the second plug plate 18 are respectively fixedly installed on the piston rods of the corresponding horizontal cylinders 19 by bolts.

[0042] In the initial state, the first plug plate 17 and the second plug plate 18 are both in the state of being inserted into the quantitative tube 15. After being screened by the upper tank body 4, the nuts enter the quantitative tube 15 located above the first plug plate 17 through the discharge pipe 10 and the hose 16 in sequence. First, the first plug plate 17 is driven to be pulled out of the quantitative tube 15 by the contraction of the corresponding horizontal cylinder 19, so that the quantitative tube 15 located above the second plug plate 18 is filled with nuts; then the corresponding horizontal cylinder 19 is extended to drive the first plug plate 17 to be reinserted into the quantitative tube 15, and the second plug plate 18 is driven to be pulled out of the quantitative tube 15 by the contraction of the corresponding horizontal cylinder 19, so that the nuts of a fixed volume in the quantitative tube 15 located between the first plug plate 17 and the second plug plate 18 are discharged through the lower end of the quantitative tube 15.

[0043] like Figures 5 to 8As shown, a bag-supporting mechanism is provided below the quantitative discharging mechanism, and the bag-supporting mechanism includes a mounting frame 21 located below the horizontal plate 14 and driven to rise and fall by the first power device, and the mounting frame 21 is slidably mounted on the two cylinders 3 located on the right side, and the first power device is specifically a vertical cylinder 22 with a piston rod extending downward, and the cylinder body of the vertical cylinder 22 is fixedly mounted on the horizontal plate 14 by bolts, and the mounting frame 21 is fixedly mounted on the piston rod of the vertical cylinder 22 by bolts; two vertical plates arranged opposite to each other front and back are welded to the bottom of the mounting frame 21, and a mounting shaft 23 extending horizontally front and back is rotatably mounted between the two vertical plates through bearings, and an adjusting motor 24 for driving the mounting shaft 23 to rotate is installed on the top of the mounting frame 21 by bolts, and the rotating shaft of the adjusting motor 24 is connected to the mounting shaft 23 by a pair of mutually meshing bevel gears; a swing arm 25 is fixedly mounted on the mounting shaft 23, and the swing arm 25 is L-shaped and the swing arm 25 is The plane is arranged perpendicular to the mounting shaft 23, one end of the swing arm 25 extends vertically upward and is fixedly mounted on the mounting shaft 23 by bolts, and the other end of the swing arm 25 extends horizontally to the left to the side close to the quantitative tube 15. Two swing arms 25 are arranged opposite to each other in front and back, and a first mounting plate 26 is fixedly mounted on one end of the two swing arms 25 away from the mounting shaft 23 by bolts, and a first suction cup 27 is fixedly mounted on the side of the first mounting plate 26 away from the swing arm 25 by bolts. Two first suction cups 27 are arranged opposite to each other in front and back, and a placement plate 28 is provided on the right side of the stand 2. The placement plate 28 is specifically fixedly mounted above the frame 35 of the conveyor 34 by a support rod, and stacks of packaging bags 29 are placed on the top of the placement plate 28. The mounting shaft 23 is driven to rotate counterclockwise by ninety degrees by adjusting the motor 24, and the mounting shaft 23 drives the first mounting plate 26 to rotate through the swing arm 25, so that the first suction cup 27 rotates to the bottom of the first mounting plate 26, such as Figure 6As shown, at this time, the placement plate 28 is located below the first suction cup 27 so that the vertical cylinder 22 can extend to drive the mounting frame 21 to move downward and absorb the packaging bag 29 located at the top of the placement plate 28 through the first suction cup 27. A fixing plate 30 is fixedly installed on the two cylinders 3 located on the left side by bolts. The fixing plate 30 and the mounting frame 21 are respectively located on the left and right sides of the quantitative tube 15. A second mounting plate 31 driven by a second power device and moving left and right along the radial direction of the quantitative tube 15 is provided on the right side of the fixing plate 30. The second power device is specifically a first electric push rod 32 extending laterally. Two first electric push rods 32 are arranged in parallel front and back. One end of the first electric push rod 32 is fixedly installed on the fixing plate 30 by bolts, and the other end is fixedly installed on the second mounting plate 31 by bolts. A second suction cup 33 is fixedly installed on the side of the second mounting plate 31 away from the fixing plate 30 by bolts. The second suction cup 33 is also relatively provided with two front and back. The first suction cup 27 and the second suction cup 33 are both connected to the negative pressure suction device through pipelines; when the first suction cup 27 sucks the packaging bag 29 located at the top of the placement plate 28 downwards, it is first sucked by the negative pressure suction device. The vertical cylinder 22 contracts and drives the mounting frame 21 to rise to the initial height, and then the adjusting motor 24 drives the mounting shaft 23 to rotate ninety degrees clockwise to return to its original position, and the mounting shaft 23 drives the first mounting plate 26 to rotate through the swing arm 25, so that the first suction cup 27 and the sucked packaging bag 29 rotate to the left side of the first mounting plate 26, at which time the first suction cup 27 and the second suction cup 33 are at the same height; then the first electric push rod 32 extends and drives the second mounting plate 31 to move rightward, and the second mounting plate 31 drives the second suction cup 33 to contact the packaging bag 29 sucked on the first suction cup 27 to the right, and the left and right sides of the packaging bag 29 are sucked by the second suction cup 33 and the first suction cup 27 respectively, and then the first electric push rod 32 contracts and drives the second mounting plate 31 to move leftward to return to its original position, so that the two sides of the packaging bag 29 are pulled in opposite directions by the second suction cup 33 and the first suction cup 27, as shown in FIG. Figure 5 As shown, the mouth of the packaging bag 29 is opened and maintained directly below the quantitative tube 15 so that the packaging bag 29 can receive a quantitative volume of nuts discharged through the lower end of the quantitative tube 15.

[0044] A conveyor 34 is provided below the bag support mechanism. Fig. 9As shown, the conveyor 34 includes a frame 35, which is provided with a bottom plate 36 and two side baffles 37 extending upward and fixedly installed on the front and rear sides of the bottom plate 36 by bolts, and two parallel support rollers 38 are rotatably installed between the two side baffles 37. The support rollers 38 extend forward and backward, and the two support rollers 38 are relatively arranged left and right, one of the support rollers 38 is driven to rotate by a driving device, and the driving device can be a motor. A transversely extending conveyor belt 39 is connected between the two support rollers 38, and a plurality of partitions 40 evenly spaced along the length direction of the conveyor belt 39 are fixedly installed on the outer side of the conveyor belt 39 by bolts, and the partitions 40 are perpendicular to the outer surface of the conveyor belt 39. After a quantitative volume of nuts falls into the packaging bag 29 below the quantitative tube 15, the first suction cup 27 and the second suction cup 33 stop adsorbing the packaging bag 29, so that the packaging bag 29 containing nuts falls downward to the top of the conveyor belt 39 between two adjacent partitions 40. The partition 40 and the front and rear side baffles 37 can support the packaging bag 29 on the top of the conveyor belt 39 to prevent the packaging bag 29 from tilting when falling on the conveyor belt 39, so that the packaging bag 29 keeps its mouth facing upward and moves backward with the conveyor belt 39.

[0045] In addition, if Fig.10 As shown, a plurality of flexible buffer columns 50 are evenly distributed on the outer surface of the partition 40. The partition 40 may be made of rubber. The buffer columns 50 are integrally formed or bonded to the partition 40. When the packaging bag 29 falls downward between the two partitions 40, the friction between the buffer columns 50 and the packaging bag 29 slows down the falling speed of the packaging bag 29, so that the packaging bag 29 containing nuts can fall more stably onto the conveyor belt 39.

[0046] A sealing mechanism is provided on the conveyor 34 located downstream of the bag-supporting mechanism. Fig. 9 and Fig.11As shown, the sealing mechanism includes a lifting plate 41 located above the conveyor 34 and driven to rise and fall by a third power device. The third power device is specifically a second electric push rod 42 extending vertically. Specifically, two second electric push rods 42 arranged opposite to each other on the left and right are respectively installed on the outer sides of the front and rear side baffles 37. The lower ends of the second electric push rods 42 are fixedly installed on the corresponding side baffles 37 by bolts, and the upper ends of the second electric push rods 42 are fixedly connected to the lifting plate 41 by bolts; a vertically extending vacuum tube 43 is fixedly installed on the lifting plate by bolts, and the upper end of the vacuum tube 43 is connected to the vacuum pump through a pipeline; two clamping plates 44 driven by the first telescopic component to move closer to or away from each other are respectively provided on the left and right sides of the lower end of the vacuum tube 43, and the first telescopic component can be a first small cylinder 45. Supports 46 are respectively fixedly installed on the left and right sides of the bottom of the lifting plate by bolts , two groups of first small cylinders 45 are arranged opposite to each other on the left and right, the cylinder body of the first small cylinder 45 is fixedly mounted on the corresponding support 46 by bolts, the piston rod of the first small cylinder 45 extends inward, and the two clamping plates 44 are respectively fixedly mounted on the piston rods of the corresponding first small cylinders 45 by bolts, and the inner side of the clamping plate 44 is provided with an arc groove 47 that matches the outer wall of the vacuum tube 43; two heat sealing plates 48 driven by the second telescopic component to move closer to or away from each other are respectively arranged on the left and right sides below the vacuum tube 43, the second telescopic component can be a second small cylinder 49, and the second small cylinder 49 is arranged opposite to each other in two groups, the cylinder body of the second small cylinder 49 is fixedly mounted on the corresponding support 46 by bolts, the piston rod of the second small cylinder 49 extends inward, and the two heat sealing plates 48 are respectively fixedly mounted on the piston rods of the corresponding second small cylinders 49 by bolts.

[0047] After the packaging bag 29 containing nuts falls onto the conveyor belt 39, the packaging bag 29 containing nuts is transported downstream by the conveyor belt 39. When the conveyor belt 39 drives the packaging bag 29 containing nuts to move to the bottom of the lifting plate 41, it stops moving and drives the lifting plate 41 downward by contraction of the second electric push rod 42. The lifting plate 41 drives the lower end of the vacuum tube 43 to extend downward into the mouth of the packaging bag 29. First, the first small cylinder 45 extends and drives the two clamping plates 44 to approach each other and clamp the mouth of the packaging bag 29. The two clamping plates 44 close the mouth of the packaging bag 29 and are close to the outer wall of the vacuum tube 43, and the air in the packaging bag 29 is extracted through the vacuum tube 43. Then, the second small cylinder 49 extends and drives the two heat sealing plates 48 to clamp the packaging bag 29 located below the vacuum tube 43, and heat-seal the packaging bag 29.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. Multifunctional pneumatic nut quantitative vacuum bag sealing and packaging machine with grading structure, characterized by: It comprises a lower trough body, a vertical frame is fixedly installed on the bottom of the lower trough body, a cylindrical upper trough body is movably installed in the upper end of the lower trough body, a plurality of screening holes are evenly distributed on the bottom wall of the upper trough body, and a vibration motor is installed on the upper trough body; the bottom wall of the upper trough body is inverted cone shape, a discharge pipe extending downward and passing through the outer side of the lower trough body is provided at the bottom center of the upper trough body, a volute-shaped guide plate is fixedly installed on the inner side of the bottom wall of the upper trough body, and the discharge pipe is located at the center of the guide plate; the lower end of the discharge pipe is connected with a quantitative discharge mechanism, a bag-holding mechanism is provided below the quantitative discharge mechanism, a conveyor is provided below the bag-holding mechanism, and a sealing mechanism is provided on the conveyor downstream of the bag-holding mechanism.

2. The multifunctional pneumatic nut quantitative vacuum bag sealing and packaging integrated machine with a grading structure as claimed in claim 1, characterized in that: A lower support plate is fixedly mounted on the outer wall of the lower tank body, an upper support plate located above the lower support plate is fixedly mounted on the outer wall of the upper tank body, and a spring is connected between the lower support plate and the upper support plate.

3. The multifunctional pneumatic nut quantitative vacuum bag sealing and packaging integrated machine with a grading structure as claimed in claim 1, characterized in that: The quantitative discharging mechanism includes a horizontal plate fixedly mounted on the vertical frame, a vertically extending quantitative tube fixedly mounted on the horizontal plate, the upper end of the quantitative tube and the lower end of the discharging tube are connected by a hose; a first plug plate for blocking the material in the quantitative tube from falling is movably mounted on the quantitative tube, and a second plug plate for blocking the material in the quantitative tube from falling is movably mounted on the quantitative tube located below the first plug plate, and the first plug plate and the second plug plate are respectively driven by pneumatic components to insert or withdraw the quantitative tube.

4. The multifunctional pneumatic nut quantitative vacuum bag sealing and packaging integrated machine with a grading structure as claimed in claim 3, characterized in that: The bag-holding mechanism includes a mounting frame located below the horizontal plate and driven to rise and fall by a first power device, the mounting frame being provided with a horizontally extending mounting shaft driven to rotate by an adjusting motor, the mounting shaft being fixedly provided with a swing arm, the mounting shaft being provided with a plane where the swing arm is located being arranged perpendicular to the mounting shaft, the swing arm having an end away from the mounting shaft being fixedly provided with a first mounting plate, the first mounting plate being fixedly provided with a side of the first mounting plate away from the swing arm, the placing plate for placing the packaging bag being provided with a placing plate on one side of the vertical frame, when the mounting shaft drives the first suction cup to rotate to the bottom of the first mounting plate, the placing plate being located below the first suction cup; a fixing plate being fixedly provided on the vertical frame, the mounting frame and the fixing plate being respectively located at opposite sides of the quantitative tube, the fixing plate being provided with a second mounting plate driven by a second power device and moving along the radial direction of the quantitative tube on a side close to the quantitative tube, the second mounting plate being fixedly provided with a second suction cup on a side away from the fixing plate.

5. The multifunctional pneumatic nut quantitative vacuum bag sealing and packaging integrated machine with a grading structure as claimed in claim 1, characterized in that: The conveyor includes a frame, which is provided with a bottom plate and two side baffles extending upward and fixedly mounted on opposite sides of the bottom plate, two parallel supporting rollers are rotatably mounted between the two side baffles, one of the supporting rollers is driven to rotate by a driving device, a transversely extending conveyor belt is connected between the two supporting rollers, and a plurality of partitions evenly spaced along the length direction of the conveyor belt are fixedly mounted on the outer side of the conveyor belt, and the partitions are perpendicular to the outer surface of the conveyor belt.

6. The multifunctional pneumatic nut quantitative vacuum bag sealing and packaging integrated machine with a grading structure as claimed in claim 5, characterized in that: A plurality of flexible buffer columns are evenly distributed on the outer surface of the partition.

7. The multifunctional pneumatic nut quantitative vacuum bag sealing and packaging integrated machine with a grading structure as claimed in claim 1, characterized in that: The sealing mechanism includes a lifting plate located above the conveyor and driven to rise and fall by a third power device, and a vertically extending vacuum tube is fixedly installed on the lifting plate; two clamping plates driven by a first telescopic component to move closer to or away from each other are installed on the lifting plates located on opposite sides of the vacuum tube, and an arc groove that matches the outer wall of the vacuum tube is provided on the inner side of the clamping plate; two heat sealing plates driven by a second telescopic component to move closer to or away from each other are installed on the lifting plates located on opposite sides below the vacuum tube.

8. The multifunctional pneumatic nut quantitative vacuum bag sealing and packaging integrated machine with a grading structure as claimed in claim 1, characterized in that: A material receiving groove is provided on one side of the outer peripheral wall of the upper tank body, and the material receiving groove is directly opposite to the outer side of the outer end of the material guide plate.

9. The multifunctional pneumatic nut quantitative vacuum bag sealing and packaging integrated machine with a grading structure as claimed in claim 1, characterized in that: A discharge port is provided at one side of the bottom of the lower tank body, and the bottom wall of the lower tank body is inclined downward toward the discharge port.

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