Metal powder filling equipment

Abstract

The present application relates to the technical field of packaging equipment, and in particular to a metal powder filling device, comprising a frame, a hopper mounted on the frame, and a discharge pipe fixed to the bottom of the hopper, the frame being provided with a fixing assembly for fixing the opening of a packaging bag, the fixing assembly comprising a sliding frame mounted on the frame, a first fixing ring fixed to the sliding frame, a second fixing ring, an elastic fixing band mounted on the second fixing ring, and a blocking plate for blocking the second fixing ring, the outer side of the second fixing ring being provided with an annular inflation groove, the elastic fixing band being used to block the opening of the annular inflation groove, a gap being left between the first fixing ring and the second fixing ring for the packaging bag to pass through, and an inflation assembly being provided on the sliding frame for inflating the annular inflation groove. The present application has the effect of reducing dust adhesion to the opening of the packaging bag.

Description

Technical Field

[0001] The present application relates to the technical field of packaging equipment, and in particular to a metal powder filling equipment. Background Art

[0002] The filling of metal powder uses metal material as raw material, and then the raw material is filled into packaging bags or containers of different materials through a packaging machine. The existing packaging machine includes a frame and a storage barrel arranged on the frame. A discharge pipe is provided at the bottom of the storage barrel, and a bag-supporting assembly is provided on the discharge pipe. The required packaging bag is opened by the bag-supporting assembly, and then the metal powder in the storage barrel falls into the packaging bag by gravity. Then the packaging bag containing the powder is removed from the bag-supporting assembly, and finally the packaging bag is sealed by heat sealing.

[0003] For example, the Chinese patent document with the announcement number CN222247790U discloses a powder bagging packaging machine, which includes a frame, a hopper welded to the horizontal plate at the top of the frame, a discharge control component installed on the hopper, and a bagging tamping component installed on the horizontal plate at the bottom of the frame; the bagging tamping component includes a chassis and a loading plate, and a concave cavity is provided in the middle of the top of the chassis, spring bins are welded to the four corners of the opposite sides of the chassis and the loading plate, and a spring is welded between the two opposite spring bins, a tamping source is installed inside the concave cavity, and the top of the tamping source is connected to the bottom of the loading plate. The tamping source includes two mounting shafts rotatably installed on both sides of the concave cavity, and cam plates are fixed on the opposite ends of the mounting shafts on both sides. A driving bar is rotatably connected between the opposite surfaces of the cam plates on both sides through a rotating shaft, and the driving bar is rotatably connected to a U-shaped seat through a rotating shaft installed at the top thereof. A guide rod is welded on the top of the U-shaped seat, and a guide column is slidably connected to the upper limit of the guide rod, and the top of the guide column is welded to the middle part of the bottom of the loading plate. When the driving motor drives the cam plate to rotate at high speed, it will continuously collide with the loading plate, causing the loading plate to vibrate at a high frequency. Since the bottom of the packaging bag is located at the top of the loading plate, the vibration will be transmitted to the powder inside the packaging bag, so that the powder is compacted in the packaging bag and the powder is more evenly dispersed in the packaging bag. Finally, the packaging bag containing the powder is removed for heat sealing.

[0004] In the above-mentioned related technologies, powder materials can be loaded into packaging bags through a hopper, but the materials in the hopper will generate a certain amount of dust during the falling process, and then the generated dust will float upward. During the floating process, metal dust will adhere to the opening of the packaging bag, which will make the heat sealing effect of the opening of the packaging bag poor in the subsequent heat sealing process. At the same time, the floating metal dust will enter the workshop, thereby causing certain damage to the health of the staff. Summary of the Invention

[0005] The present application provides a metal powder filling device, which aims to solve the problem in the related art that metal dust is adsorbed on the opening of the packaging bag and the heat sealing effect of the packaging bag opening is poor.

[0006] The metal powder filling equipment provided in this application adopts the following technical solution:

[0007] The cam is secured to the bottom of the bag and has a locking mechanism which allows the cam to lock the bag and lock the bag's contents.

[0008] By adopting the above technical solution, when filling the metal powder, first open the opening of the packaging bag so that it is in the gap between the first fixing ring and the second fixing ring, and then inflate the inflation groove through the inflation component. During the inflation process, the elastic fixing belt is stretched and expanded, and then protrudes toward the inner side of the first fixing ring. At this time, the elastic fixing belt abuts against the inner side of the packaging bag, and at the same time, the outer side of the packaging bag abuts against the inner wall of the first fixing ring. The packaging bag is fixed by the protruding part of the elastic fixing belt, and then the material is loaded into the packaging bag through the discharge pipe. During the discharge process, the elastic fixing belt The second fixing ring and the sealing plate can seal the opening of the packaging bag, reduce the dust from floating toward the opening of the packaging bag, and then reduce the dust from sticking to the opening of the packaging bag, thereby improving the sealing effect of the packaging bag; in addition, after the loading is completed, the inflation component draws out the gas in the inflation groove, and then the elastic fixing belt no longer abuts against the opening of the packaging bag, thereby facilitating the removal of the packaging bag containing powder from the fixing component. At the same time, since the elastic fixing belt no longer abuts against the inner wall of the packaging bag after being reset, the powder on the elastic fixing belt can be reduced from sticking to the inside of the packaging bag during the process of removing the packaging bag.

[0009] Optionally, the sliding frame is provided with a folding assembly for folding the opening position of the packaging bag outward, the folding assembly includes a mounting ring slidably connected to the sliding frame and a plurality of folding plates fixed on the mounting ring, the plurality of folding plates are evenly spaced along the circumference of the mounting ring, the inner diameter of the folding plate is larger than the outer diameter of the first fixed ring, and the folding plate pushes the packaging bag to fold outward when it moves downward, and the folded packaging bag is located between the inner wall of the folding plate and the outer wall of the first fixed ring, and the sliding frame is provided with a control component for driving the mounting ring to move.

[0010] By adopting the above technical solution, after the elastic fixing band fixes the expanded packaging bag, the mounting ring is driven downward by the control member, and the folding plate is pushed to move during the movement. When the folding plate moves, it pushes the part of the packaging bag extending outward from the upper end face of the first fixing ring to fold outward. Then, when the elastic fixing band no longer fixes the packaging bag, the dust inside will float upward through the gap between the first fixing ring and the second fixing ring. At this time, folding the packaging bag opening can reduce the dust sticking to the folded packaging bag.

[0011] Optionally, a connecting assembly is provided on the discharge tube, and a pushing assembly is provided on the connecting assembly for pushing the packaging bag above the first fixed ring to open outward; the pushing assembly includes a pushing ring provided on the mounting assembly, a pushing surface provided on the pushing ring, and a plurality of clearance grooves provided on the pushing ring, the plurality of clearance grooves and the plurality of folding plates correspond one to one, the folding plates are slidably connected in the clearance grooves, and the pushing surface makes the diameter of the lower end of the push ring smaller than the diameter of the upper end.

[0012] By adopting the above technical solution, after the packaging bag is fixed by the elastic fixing band, it is first moved by the pushing ring. During the movement of the pushing ring, the pushing surface will abut against the packaging bag above the first fixing ring, and then the opening of the packaging bag will be opened outward. Then the installation ring drives the folding plate to move, and the folding plate moves downward from the give way groove, pushing the opened packaging bag to fold during the movement.

[0013] Optionally, the connecting assembly includes a mounting cylinder sliding on the discharge pipe, a first connecting ring slidably connected to the mounting cylinder, a first connecting rod fixed on the first connecting ring, a second connecting ring slidably connected to the mounting cylinder, a second connecting rod fixed on the second connecting ring, and a connecting spring fixed on the first connecting ring, one end of the connecting spring away from the first connecting ring is fixed on the second connecting ring, the second connecting rod is connected to the pushing assembly, and the mounting cylinder is fixedly mounted on the sliding frame.

[0014] By adopting the above technical solution, in the process of the control part driving the installation ring to move, the pushing surface on the pushing ring first abuts against the opening of the packaging bag, and then pushes the opening of the packaging bag to open outward. After the bottom surface of the pushing ring abuts against the sealing plate, the pushing ring cannot continue to move. Then, in the process of the installation ring driving the folding plate to continue to move, the connecting spring will be compressed. At this time, the folding plate continues to move downward from the give way groove, thereby pushing the opening of the packaging bag to fold.

[0015] Optionally, the inflation assembly includes an inflation pump fixed on the sliding frame and a connecting pipe fixed on the inflation pump, and one end of the connecting pipe away from the inflation pump is fixed on the second fixing ring and communicated with the inflation groove on the second fixing ring.

[0016] By adopting the above technical solution, when the packaging bag needs to be fixed, air is inflated into the inflation groove through the air pump. During the inflation process, the elastic fixing belt is stretched and then expands toward the inner wall close to the first fixing ring. When the packaging bag needs to be removed, the gas in the inflation groove is pumped out and the elastic fixing belt shrinks. During the inflation and exhaust process, the elastic fixing belt can form a certain vibration, and then the dust stuck to the elastic fixing belt can be cleaned, which can reduce the adhesion of powder to the packaging bag during the process of putting on or removing the packaging bag.

[0017] Optionally, the elastic fixing band protrudes toward the axial direction of the discharge pipe, and chamfers are provided at the upper and lower ends of the second fixing ring.

[0018] By adopting the above technical solution, since the elastic fixing band bulges toward the axis of the discharge pipe in the initial state, the side of the elastic fixing band close to the inner wall of the first fixing ring is concave inward. Then, when installing the packaging bag, the dust on the elastic fixing band can be reduced from sticking to the inside of the packaging bag.

[0019] Optionally, a spreading ring is fixedly mounted on the lower end of the first fixing ring, and a plurality of spreading rods are fixed on the spreading ring, and the spreading rods are gradually inclined toward the axis of the lower material pipe in a direction away from the second fixing ring.

[0020] By adopting the above technical solution, when putting on the packaging bag, the expansion rod is extended into the packaging bag, and then the packaging bag will be put on the expansion ring during the upward movement, and finally move to the second fixed ring, and then extend out of the upper end surface of the second fixed ring, so that the subsequent folding plate can push the packaging bag opening to fold.

[0021] Optionally, a curved surface is provided on a side of the folding plate away from the mounting ring.

[0022] By adopting the above technical solution, since a curved surface is provided on the side of the folding plate away from the mounting ring, when the folding plate pushes the packaging bag to fold, the friction between the folding plate and the packaging bag can be reduced, thereby reducing damage to the packaging bag.

[0023] Optionally, the control member is configured as a control cylinder, the cylinder body of the control cylinder is fixed on the sliding frame, the piston rod is fixed on the mounting ring, and is used to drive the mounting ring to move up and down on the sliding frame.

[0024] Optionally, the frame is provided with a driving assembly for driving the sliding frame to move up and down on the frame, the driving assembly includes a driving frame slidably connected to the frame and a driving cylinder fixed on the driving frame, the cylinder body of the driving cylinder is fixed on the frame, and the piston rod is fixed on the driving frame.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. The opening of the packaging bag can be sealed by the elastic fixing belt, the second fixing ring and the sealing plate to reduce the dust from floating toward the opening of the packaging bag and then reduce the dust from sticking to the opening of the packaging bag, thereby improving the sealing effect of the packaging bag.

[0027] 2. When the folding plate moves, it pushes the portion of the packaging bag extending outward from the upper end face of the first fixing ring to fold outward. Then, when the elastic fixing band no longer fixes the packaging bag, the dust inside will float upward through the gap between the first fixing ring and the second fixing ring. At this time, folding the packaging bag through the opening can reduce the dust from sticking to the folded packaging bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0029] Figure 2 It is a side view of the pushing component and the folding component of an embodiment of the present application.

[0030] Figure 3 This is a cross-sectional view of the first fixing ring of an embodiment of the present application.

[0031] Figure 4 This is a schematic diagram of the abutment between the push ring and the packaging bag opening in an embodiment of the present application.

[0032] Figure 5 yes Figure 4 Enlarged view of point A in the middle.

[0033] Figure 6 It is a schematic diagram of the folding opening of the packaging bag in an embodiment of the present application.

[0034] Figure 7 yes Figure 6 Enlarged view of point B in the middle.

[0035] Figure markings: 001, packaging bag; 01, frame; 02, hopper; 03, discharge pipe; 1, fixing assembly; 11, sliding frame; 12, first fixing ring; 13, second fixing ring; 14, elastic fixing belt; 15, sealing plate; 2, pushing assembly; 21, pushing ring; 22, pushing surface; 3, folding assembly; 31, mounting ring; 32, folding plate; 33, control part; 4, connecting assembly; 41, mounting cylinder; 42, first connecting ring; 43, first connecting rod; 44, second connecting ring; 45, second connecting rod; 46, connecting spring; 5, inflation groove; 51, arcuate surface; 52, give way groove; 6, inflation assembly; 61, inflation pump; 62, connecting pipe; 7, expansion ring; 71, expansion rod; 8, driving assembly; 81, driving frame; 9, support plate. DETAILED DESCRIPTION

[0036] The following combination Figure 1-Figure 7 This application is described in further detail.

[0037] The embodiment of the present application discloses a metal powder filling device. Figures 1 to 4 A metal powder filling device includes a frame 01 set on the ground, a hopper 02 fixed on the frame 01, and a discharge pipe 03 fixed at the bottom of the hopper 02. A fixing component 1 for fixing the opening of the packaging bag 001 is provided on the frame 01, and a pushing component 2 for pushing the opening of the packaging bag 001 to open outward is provided on the fixing component 1. In addition, a folding component 3 for pushing the opened packaging bag 001 to fold is slidably connected to the hopper 02. After the fixing component 1 fixes the packaging bag 001, the opening of the packaging bag 001 can be sealed, thereby reducing the dust generated during filling from flowing to the opening of the packaging bag 001, thereby reducing the material dust sticking to the opening of the packaging bag 001.

[0038] Reference Figures 3 to 5 The fixing component 1 includes a sliding frame 11 arranged on the frame 01, a first fixing ring 12 fixed on the sliding frame 11, a second fixing ring 13 and an elastic fixing band 14 arranged on the second fixing ring 13, and a sealing plate 15 for sealing the second fixing ring 13. A connecting component 4 is provided on the sealing plate 15. The connecting component 4 is used to connect the pushing component 2 and the folding component 3, and then the pushing component 2 and the folding component 3 can be rotated simultaneously; the inner diameter of the first fixing ring 12 is larger than the outer diameter of the second fixing ring 13, and then the first fixing ring 12 is sleeved on the second fixing ring 13, and the opened packaging bag 001 is in the gap between the first fixing ring 12 and the second fixing ring 13, and then the packaging bag 001 is sleeved on the second fixing ring 13.

[0039] Reference Figures 3 to 5An inflatable groove 5 is provided on one side of the second fixing ring 13 close to the first fixing ring 12. The inflatable groove 5 is arranged along the circumference of the second fixing ring 13, and the opening of the inflatable groove 5 is arranged toward the inner wall of the first fixing ring 12. The elastic fixing belt 14 is used to block the opening of the inflatable groove 5. At the same time, an inflatable component 6 is provided on the sliding frame 11. The inflatable component 6 is used to inflate the inflatable groove 5. After inflation, the elastic fixing belt 14 will stretch and expand, and finally push the inflatable belt 14 that is passed through the first fixing ring 12 and the second fixing ring 13. The outer side of the packaging bag 001 abuts against the inner wall of the first fixing ring 12, and the inner side of the packaging bag 001 abuts against the elastic fixing belt 14, thereby fixing the packaging bag 001. At the same time, due to the setting of the sealing plate 15, the opening of the second fixing ring 13 can be blocked. After the elastic fixing belt 14 fixes the packaging bag 001, the packaging bag 001 can be blocked during the process of filling the metal powder to reduce the upward flow of the generated dust, thereby reducing the dust sticking to the opening of the packaging bag 001.

[0040] After the filling is completed, the gas in the inflation groove 5 is extracted, and then the elastic fixing belt 14 will be reset. The inflation component 6 continues to extract air, and finally the elastic fixing belt 14 is reset. After the reset is completed, the elastic fixing belt 14 protrudes toward the axis direction of the discharge pipe 03. Then, when the packaging bag 001 is removed, the contact between the material on the elastic fixing belt 14 and the inner side of the packaging bag 001 can be reduced, which can further reduce the material sticking to the inner side of the opening of the packaging bag 001.

[0041] Reference Figures 3 to 5 The inflation component 6 includes an air pump 61 (with both inflation and exhaust functions) fixed on the sliding frame 11 and a connecting pipe 62 installed on the air pump 61. The end of the connecting pipe 62 away from the air pump 61 is connected to the inflation groove 5, and then under the action of the air pump 61, air can be inflated and exhausted into the inflation groove 5. When inflating the air into the inflation groove 5, the elastic fixing band 14 will expand and be stretched, and then squeeze the packaging bag 001 against the inner wall of the first fixing ring 12. When exhausting air into the inflation groove 5, the elastic fixing band 14 can be adsorbed to bulge toward the axis direction of the discharge pipe 03. At the same time, chamfers are provided at the upper and lower ends of the second fixing ring 13, which can reduce the side of the elastic fixing band 14 from abutting against the inner side of the packaging bag 001 when removing the filled packaging bag 001.

[0042] Reference Figures 3 to 5The connecting component 4 includes a mounting tube 41 fixed on the sliding frame 11, a first connecting ring 42 slidably connected to the mounting tube 41, a first connecting rod 43 fixed on the first connecting ring 42, a second connecting ring 44 slidably connected to the mounting tube 41, a second connecting rod 45 fixed on the second connecting ring 44, and a connecting spring 46 fixed on the first connecting ring 42. The end of the first connecting rod 43 away from the first connecting ring 42 is fixed to the folding component 3, the end of the second connecting rod 45 away from the second connecting ring 44 is fixed to the pushing component 2, and the end of the connecting spring 46 away from the first connecting ring 42 is fixed to the second connecting ring 44.

[0043] Reference Figures 3 to 7 The pushing component 2 includes a pushing ring 21 fixed on the second connecting rod 45 and a pushing surface 22 set on the pushing ring 21. Under the action of the pushing surface 22, the diameter of the upper end of the pushing ring 21 is larger than the diameter of the lower end, and the diameter of the lower end of the pushing ring 21 is the same as the outer diameter of the second fixed ring 13. After the packaging bag 001 is fixed, the pushing ring 21 will move downward, so that the lower end of the pushing ring 21 will first contact the packaging bag 001 on the second fixed ring 13, and then the pushing ring 21 will gradually move downward. The packaging bag 001 above the second fixed ring 13 will be pushed outward to make the opening of the upper end of the packaging bag 001 the largest, and then it will be convenient for the subsequent folding component 3 to push the packaging bag 001 above the second fixed ring 13 to fold.

[0044] Reference Figures 3 to 7 The folding assembly 3 includes a mounting ring 31 slidably connected to the sliding frame 11 and a plurality of folding plates 32 fixed to the mounting ring 31. The folding plate 32 is arranged in an arc-shaped structure. A control member 33 for driving the mounting ring 31 to move up and down is provided on the sliding frame 11. In this embodiment, the control member 33 is arranged as a control cylinder. The cylinder body of the control cylinder is fixed on the sliding frame 11, and the piston rod is fixed on the mounting ring 31. The plurality of folding plates 32 are evenly spaced along the circumference of the mounting ring 31. The plurality of folding plates 32 form an annular structure, and the inner side surface of the folding plate 32 is an arc surface. The inner diameter of the circle where the inner side surface of the folding plate 32 is located is larger than the outer diameter of the first fixing ring 12. At this time, the inner wall of the folding plate 32 and the outer wall of the first fixing ring 12 are spaced apart. When the mounting ring 31 drives the multiple folding plates 32 to move downward, the multiple folding plates 32 will push the opening of the opened packaging bag 001 to fold outward. The inner side of the folded packaging bag 001 is set to face the outside, and then the folded packaging bag 001 is between the inner side of the folding plate 32 and the outer wall of the first fixing ring 12. After the opening of the packaging bag 001 is folded, the multiple folding plates 32 will abut against the inner side of the folded packaging bag 001.

[0045] Reference Figures 3 to 7An arcuate surface 51 is provided at one end of the folding plate 32 away from the mounting ring 31. Then, when the folding plate 32 moves downward, the arcuate surface 51 first abuts against the packaging bag 001, and then pushes the packaging bag 001 to fold open. In this process, the friction between the folding plate 32 and the packaging bag 001 can be reduced, thereby reducing the damage of the folding plate 32 to the packaging bag 001.

[0046] After the metal powder filling in the packaging bag 001 is completed, the air pump 61 is depressurized, and the elastic fixing band 14 is reset. At this time, a small amount of dust will still float upward. At this time, since the opening of the packaging bag 001 is folded outward, the dust can be reduced from adhering to the opening of the packaging bag 001. The packaging bag 001 is then directly pulled downward and removed directly from between the folding plate 32 and the first fixing ring 12, thereby reducing the dust from adhering to the opening of the packaging bag 001. In addition, to facilitate the folding plate 32 to push the opened packaging bag 001 to fold, a plurality of clearance slots 52 for the folding plate 32 to pass through are provided on the push ring 21. The plurality of clearance slots 52 corresponds to the plurality of folding plates 32.

[0047] After the packaging bag 001 is fixed by the fixing assembly 1, the mounting ring 31 and the folding plate 32 on the mounting ring 31 are driven downward by the control cylinder. During the movement of the mounting ring 31, due to the setting of the connecting spring 46, the mounting ring 31 and the pushing ring 21 can move simultaneously. During the simultaneous movement, the pushing ring 21 first abuts against the opening of the packaging bag 001, and then pushes the opening of the packaging bag 001 to open as the pushing ring 21 continues to move. After the opening of the packaging bag 001 is opened, the pushing ring 21 abuts against the sealing plate 15. At this time, the pushing ring 21 cannot continue to move. Then, as the mounting ring 31 continues to move downward, it will pass through the give way groove 52, and then slide in the give way groove 52. Finally, it passes through the give way groove 52 and abuts against the opening of the opened packaging bag 001. Then, under the limitation of the first fixing ring 12, the opened packaging bag 001 can be pushed to fold outward, thereby reducing the material sticking to the opening of the packaging bag 001 during the subsequent filling process.

[0048] Reference Figures 3 to 7 A spreading ring 7 is fixedly installed at the lower end of the first fixed ring 12, and a plurality of spreading rods 71 ​​are fixed on the spreading ring 7. The plurality of spreading rods 71 ​​are arranged at intervals along the circumference of the spreading ring 7, and the spreading rods 71 ​​gradually tilt toward the axis of the lower material tube 03 in the direction away from the second fixed ring 13, and then the plurality of spreading rods 71 ​​will form an inverted cone structure. Since the opening at the lower end is small, it is convenient for the packaging bag 001 to be put on the second fixed ring 13.

[0049] Reference Figures 1 to 4, a driving assembly 8 is provided on the frame 01 for driving the sliding frame 11 to move up and down on the frame 01. The driving assembly 8 includes a driving frame 81 slidably connected to the frame 01 and a driving cylinder (not shown in the figure) fixed to the driving frame 81. The cylinder body of the driving cylinder is fixed on the frame 01, and the piston rod is fixed on the driving frame 81. Since the driving cylinder can drive the driving frame 81 and the sliding frame 11 set on the driving frame 81 to move, the position of the packaging bag 001 can be adjusted, and then the length of the discharge pipe 03 extending into the packaging bag 001 can be adjusted. As the height of the metal powder in the packaging bag 001 increases, the packaging bag 001 gradually moves downward. At this time, the length of the discharge pipe extending into the packaging bag 001 will also become shorter, thereby achieving the purpose of reducing dust generation.

[0050] Reference Figures 1 to 4 A support plate 9 is provided on the control frame, which can support the packaging bag 001, thereby preventing the packaging bag 001 filled with metal powder from automatically detaching from the elastic fixing belt 14 under the action of gravity, and then making the metal filling more stable.

[0051] The implementation principle of the metal powder filling equipment of the embodiment of the present application is as follows: when filling the metal powder, the packaging bag 001 is placed on the second fixing ring 13, and the length of the packaging bag 001 extending out of the first fixing ring 12 is adjusted. The air is inflated into the inflation groove 5 by the air pump 61, and the expanded elastic fixing belt 14 presses the packaging bag 001 against the inner wall of the first fixing ring 12 to fix the packaging bag 001. At the same time, the opening of the packaging bag 001 is blocked to reduce the dust generated from floating out of the packaging bag 001. Then, the air cylinder is controlled to The mounting ring 31 is driven to move downward. During the movement of the mounting ring 31, the pushing ring 21 is driven to move. The pushing surface 22 on the pushing ring 21 first contacts the opening of the packaging bag 001, pushing the opening of the packaging bag 001 to open. Then the pushing ring 21 remains in position, and the folding plate 32 moves in the give way groove 52, pushing the opened opening of the packaging bag 001 to fold. The inner side of the folded packaging bag 001 abuts against the folding plate 32. Then, when the elastic fixing belt 14 no longer fixes the packaging bag 001, it can reduce the dust that sticks to the opening of the packaging bag 001.

[0052] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A metal powder filling device, comprising a frame, a hopper mounted on the frame, and a discharge pipe fixed to the bottom of the hopper, characterized in that: The frame is provided with a fixing assembly for fixing the opening of the packaging bag, the fixing assembly includes a sliding frame arranged on the frame, a first fixing ring fixed on the sliding frame, a second fixing ring and an elastic fixing band arranged on the second fixing ring, and a sealing plate for sealing the second fixing ring, the sealing plate is slidably connected to the discharge pipe, the outer diameter of the second fixing ring is smaller than the inner diameter of the first fixing ring, and an annular inflation groove is provided on the outer side surface of the second fixing ring, the elastic fixing band is used to seal the opening of the annular inflation groove, a gap is left between the first fixing ring and the second fixing ring for the packaging bag to pass through, and an inflation assembly for inflating the annular inflation groove is provided on the sliding frame, and when the inflation groove is inflated, the elastic fixing band expands toward the inner wall of the first fixing ring; The sliding frame is provided with a folding assembly for folding the opening position of the packaging bag outward, and the folding assembly includes a mounting ring slidably connected to the sliding frame and a plurality of folding plates fixed to the mounting ring. The plurality of folding plates are evenly spaced along the circumference of the mounting ring. The inner diameter of the folding plate is larger than the outer diameter of the first fixed ring. When the folding plate moves downward, it pushes the packaging bag to fold outward. The folded packaging bag is located between the inner wall of the folding plate and the outer wall of the first fixed ring. The sliding frame is provided with a control member for driving the mounting ring to move; The discharge tube is provided with a connecting assembly, and the connecting assembly is provided with a pushing assembly for pushing the packaging bag above the first fixing ring to open outward; the pushing assembly includes a pushing ring provided on the mounting assembly, a pushing surface provided on the pushing ring, and a plurality of paving grooves provided on the pushing ring, the plurality of paving grooves corresponding to the plurality of folding plates one by one, the folding plates being slidably connected in the paving grooves, and the pushing surface makes the diameter of the lower end of the pushing ring smaller than the diameter of the upper end; The inflation component includes an inflation pump fixed on the sliding frame and a connecting pipe fixed on the inflation pump. One end of the connecting pipe away from the inflation pump is fixed on the second fixing ring and communicated with the inflation groove on the second fixing ring.

2. The metal powder filling equipment according to claim 1, characterized in that: The connecting assembly includes a mounting cylinder sliding on the discharge pipe, a first connecting ring slidably connected to the mounting cylinder, a first connecting rod fixed on the first connecting ring, a second connecting ring slidably connected to the mounting cylinder, a second connecting rod fixed on the second connecting ring, and a connecting spring fixed on the first connecting ring, one end of the connecting spring away from the first connecting ring is fixed on the second connecting ring, the second connecting rod is connected to the pushing assembly, and the mounting cylinder is fixedly mounted on the sliding frame.

3. The metal powder filling equipment according to claim 1, characterized in that: The elastic fixing band protrudes toward the axial direction of the discharge pipe, and chamfers are provided at the upper and lower ends of the second fixing ring.

4. The metal powder filling equipment according to claim 1, characterized in that: A spreading ring is fixedly mounted on the lower end of the first fixing ring. A plurality of spreading rods are fixed on the spreading ring. The spreading rods gradually tilt toward the axis of the lower material pipe in a direction away from the second fixing ring.

5. The metal powder filling equipment according to claim 4, characterized in that: A curved surface is provided on one side of the folding plate away from the mounting ring.

6. The metal powder filling equipment according to claim 1, characterized in that: The control member is configured as a control cylinder, a cylinder body of the control cylinder is fixed on the sliding frame, and a piston rod is fixed on the mounting ring and is used to drive the mounting ring to move up and down on the sliding frame.

7. The metal powder filling equipment according to claim 1, characterized in that: The frame is provided with a driving assembly for driving the sliding frame to move up and down on the frame. The driving assembly includes a driving frame slidably connected to the frame and a driving cylinder fixed to the driving frame. The cylinder body of the driving cylinder is fixed to the frame, and the piston rod is fixed to the driving frame.

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