Metal powder filling equipment

Abstract

The invention relates to the technical field of packaging equipment, in particular to metal powder filling equipment which comprises a rack, a hopper arranged on the rack and a discharging pipe fixed to the bottom of the hopper, and a fixing assembly used for fixing an opening of a packaging bag is arranged on the rack. The fixing assembly comprises a sliding frame arranged on the rack, a first fixing ring fixed to the sliding frame, a second fixing ring, an elastic fixing belt arranged on the second fixing ring and a blocking plate used for blocking the second fixing ring, and an annular inflation groove is formed in the outer side face of the second fixing ring. The elastic fixing belt is used for blocking an opening of the annular inflation groove, a gap allowing a packaging bag to penetrate through is reserved between the first fixing ring and the second fixing ring, and an inflation assembly used for inflating the annular inflation groove is arranged on the sliding frame. The packaging bag has the effect of reducing dust adhering to the opening of the packaging bag.

Description

Technical Field

[0001] This application relates to the technical field of packaging equipment, and particularly relates to a metal powder filling equipment. Background Art

[0002] The filling of metal powder uses metal materials as raw materials, and then the raw materials are filled into packaging bags or containers made of different materials through a packaging machine. The existing packaging machines include a frame and a storage hopper arranged on the frame. An outlet pipe is arranged at the bottom of the storage hopper, and a bag-supporting component is arranged on the outlet pipe. The required packaging bag is opened by the bag-supporting component, and then the metal powder in the storage hopper falls into the packaging bag by gravity. Then, the packaging bag filled with powder is taken off from the bag-supporting component, and finally the packaging bag is sealed by heat sealing.

[0003] For example, the Chinese patent document with the publication number CN222247790U discloses a powder bagging packaging machine, which includes a frame. A hopper is welded at the cross plate at the top of the frame, and a discharging control component is installed on the hopper. A bagging tamping component is installed at the cross plate at the bottom of the frame; the bagging tamping component includes a machine box and a loading plate. A concave cavity is arranged in the middle of the top of the machine box. Spring bins are welded at the four corners of the opposite surfaces of the machine box and the loading plate, and springs are 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 inside the concave cavity, and cam discs are fixed at the opposite ends of the two sides. A driving bar is rotatably connected between the opposite surfaces of the two cam discs through a rotating shaft. The driving bar is rotatably connected to a U-shaped seat through a rotating shaft installed at its top end. A guide rod is welded at the top of the U-shaped seat, and a guiding column is slidably connected in a limited way on the guide rod, and the top of the guiding column is welded to the middle of the bottom of the loading plate. When the driving motor drives the cam discs to rotate at a high speed, the loading plate will be continuously impacted, making the loading plate in a state of high-frequency vibration. 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, causing the powder to be tamped in the packaging bag, and the powder is more evenly dispersed in the packaging bag. Finally, the packaging bag filled with powder is taken off for heat sealing treatment.

[0004] In the above related technologies, the powder materials can be loaded into the packaging bag through the hopper. However, certain dust will be generated during the falling process of the materials in the hopper, and then the generated dust will float upward. During the floating process, the metal dust will adhere to the opening of the packaging bag, which will cause poor heat sealing effect at the opening of the packaging bag during the subsequent heat sealing process. At the same time, the floating metal dust will enter the workshop, which will also cause certain damage to the health of the staff. Summary of the Invention

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

[0006] The metal powder filling device provided by the present application adopts the following technical solutions: A metal powder filling device includes a frame, a hopper arranged on the frame, and a feeding pipe fixed to the bottom of the hopper. A fixing component for fixing the opening of the packaging bag is arranged on the frame. The fixing component includes a sliding frame arranged on the frame, a first fixing ring fixed to the sliding frame, a second fixing ring, an elastic fixing belt arranged on the second fixing ring, and a blocking plate for blocking the second fixing ring. The blocking plate is slidably connected to the feeding 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 formed on the outer side surface of the second fixing ring. The elastic fixing belt is used for blocking the opening of the annular inflation groove. A gap for the packaging bag to pass through is left between the first fixing ring and the second fixing ring, and an inflation component for inflating the annular inflation groove is arranged on the sliding frame. When the inflation groove is inflated, the elastic fixing belt expands towards the inner wall of the first fixing ring.

[0007] By adopting the above technical solutions, when filling 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 towards 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 filled into the packaging bag through the feeding pipe. During the feeding process, the opening of the packaging bag can be sealed by the elastic fixing belt, the second fixing ring and the blocking plate, reducing the dust floating towards the opening of the packaging bag, and then reducing the dust sticking to the opening of the packaging bag, thereby improving the sealing effect of the packaging bag; in addition, after the filling is completed, the inflation component extracts the gas in the inflation groove, and then the elastic fixing belt no longer abuts against the opening of the packaging bag, facilitating the removal of the packaging bag filled with 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 resetting, the powder on the elastic fixing belt can be reduced from sticking to the inside of the packaging bag during the removal of the packaging bag.

[0008] 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.

[0009] By adopting the above technical solution, after the elastic fixing band fixes the stretched packaging bag, the mounting ring is driven to move downward by the control part, 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 opening of the packaging bag can reduce the amount of dust sticking to the folded packaging bag.

[0010] 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 arranged on the mounting assembly, a pushing surface arranged on the pushing ring, and a plurality of clearance grooves opened 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.

[0011] 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 mounting ring drives the folding plate to move, and the folding plate moves downward from the give way groove, pushing the opened packaging bag to be folded during the movement.

[0012] 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 to the first connecting ring, a second connecting ring slidably connected to the mounting cylinder, a second connecting rod fixed to the second connecting ring, and a connecting spring fixed to the first connecting ring, one end of the connecting spring away from the first connecting ring is fixed to 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.

[0013] 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 be folded.

[0014] Optionally, the inflation assembly includes an inflation pump fixed on the sliding frame and a connecting pipe fixed on the inflation pump, wherein 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.

[0015] By adopting the above technical solution, when the packaging bag needs to be fixed, air is inflated into the inflation groove through an 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 pumping process, the elastic fixing belt can vibrate to a certain extent, and then the dust adhered to the elastic fixing belt can be cleaned, and the powder adhesion to the packaging bag can be reduced during the process of putting on or removing the packaging bag.

[0016] Optionally, the elastic fixing band protrudes toward the axial direction close to the discharge pipe, and chamfers are provided at the upper and lower ends of the second fixing ring.

[0017] 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, and then when the packaging bag is installed, the dust on the elastic fixing band can be reduced from sticking to the inside of the packaging bag.

[0018] 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 direction of the lower material tube in a direction away from the second fixing ring.

[0019] 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 as to facilitate the subsequent folding plate to push the packaging bag opening to fold.

[0020] Optionally, a curved surface is provided on a side of the folding plate away from the mounting ring.

[0021] 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.

[0022] Optionally, the control member is configured to control a cylinder. The cylinder block of the 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.

[0023] Optionally, a driving assembly for driving the sliding frame to move up and down on the frame is provided 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 block of the driving cylinder is fixed on the frame, and the piston rod is fixed on the driving frame.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. The elastic fixing band, the second fixing ring and the sealing plate can seal the opening of the packaging bag, reduce the dust from floating towards the opening of the packaging bag, and then reduce the dust sticking to the opening of the packaging bag, thereby improving the sealing effect of the packaging bag.

[0025] 2. When the folding plate moves, it will push the part of the packaging bag extending out of the upper end surface of the first fixing ring to fold outwards. Then, when the elastic fixing band no longer fixes the packaging bag, the internal dust will float upwards through the gap between the first fixing ring and the second fixing ring. At this time, the folding of the packaging bag opening can reduce the dust sticking to the folded packaging bag. Description of the Drawings

[0026] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present application.

[0027] Figure 2 is a side view of the pushing assembly and the folding assembly of an embodiment of the present application.

[0028] Figure 3 is a cross-sectional view of the first fixing ring of an embodiment of the present application.

[0029] Figure 4 is a schematic diagram of the pushing ring abutting against the opening of the packaging bag of an embodiment of the present application.

[0030] Figure 5 is Figure 4 an enlarged view of part A in

[0031] Figure 6 is a schematic diagram of the folding of the opening of the packaging bag of an embodiment of the present application.

[0032] Figure 7 is Figure 6 an enlarged view of part B in

[0033] Reference numerals: 001, packaging bag; 01, frame; 02, hopper; 03, blanking pipe; 1, fixing assembly; 11, sliding frame; 12, first fixing ring; 13, second fixing ring; 14, elastic fixing belt; 15, blocking plate; 2, pushing assembly; 21, pushing ring; 22, pushing surface; 3, folding assembly; 31, mounting ring; 32, folding plate; 33, control member; 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, arc surface; 52, relief groove; 6, inflation assembly; 61, air pump; 62, connecting pipe; 7, spreading ring; 71, spreading rod; 8, driving assembly; 81, driving frame; 9, support plate. Detailed implementation mode

[0034] The following is a further detailed description of the present application in conjunction with Figures 1-7 this

[0035] The embodiment of the present application discloses a metal powder filling device. Refer to Figures 1 to 4 , a metal powder filling device includes a frame 01 arranged on the ground, a hopper 02 fixed on the frame 01, and a blanking pipe 03 fixed at the bottom of the hopper 02. A fixing assembly 1 for fixing the opening of the packaging bag 001 is arranged on the frame 01. At the same time, a pushing assembly 2 for pushing the opening of the packaging bag 001 to open outward is arranged on the fixing assembly 1. In addition, a folding assembly 3 for pushing the folded packaging bag 001 to fold is slidably connected to the hopper 02. After the fixing assembly 1 fixes the packaging bag 001, the opening of the packaging bag 001 can be blocked, and then the dust generated during filling can be reduced from flowing into the opening of the packaging bag 001, and the adhesion of material dust to the opening of the packaging bag 001 can be reduced.

[0036] Refer to Figures 3 to 5 , the fixing assembly 1 includes a sliding frame 11 arranged on the frame 01, a first fixing ring 12, a second fixing ring 13 fixed on the sliding frame 11, an elastic fixing belt 14 arranged on the second fixing ring 13, and a blocking plate 15 for blocking the second fixing ring 13. A connecting assembly 4 is arranged on the blocking plate 15. The connecting assembly 4 is used to connect the pushing assembly 2 and the folding assembly 3, and then the pushing assembly 2 and the folding assembly 3 can rotate simultaneously; the inner diameter of the first fixing ring 12 is greater 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. The opened packaging bag 001 is located 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.

[0037] Refer to Figures 3 to 5, on the side of the second fixing ring 13 close to the first fixing ring 12, an inflation groove 5 is provided. The inflation groove 5 is arranged in a circle along the circumferential direction of the second fixing ring 13, and the opening of the inflation groove 5 faces the inner wall of the first fixing ring 12. The elastic fixing belt 14 is used to block the opening of the inflation groove 5. At the same time, an inflation assembly 6 is arranged on the sliding frame 11. The inflation assembly 6 is used to inflate the inflation groove 5. After inflation, the elastic fixing belt 14 will stretch and expand, and finally push the outer side of the packaging bag 001 inserted between the first fixing ring 12 and the second fixing ring 13 to abut 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, so as to realize the fixation of the packaging bag 001. At the same time, due to the arrangement of the blocking plate 15, the opening of the second fixing ring 13 can be blocked. After the elastic fixing belt 14 fixes the packaging bag 001, during the process of filling metal powder, the packaging bag 001 can be blocked to reduce the upward flow of the generated dust, thereby reducing the dust sticking to the opening of the packaging bag 001.

[0038] After the filling is completed, the gas in the inflation groove 5 is pumped out, and then the elastic fixing belt 14 will reset. The inflation assembly 6 continues to pump air, and finally the elastic fixing belt 14 resets. After the reset is completed, the elastic fixing belt 14 bulges towards the axis direction of the feeding 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, and further the material sticking to the inner side of the opening of the packaging bag 001 can be reduced.

[0039] Refer to Figures 3 to 5 , the inflation assembly 6 includes an air pump 61 (with both inflation and air extraction functions) fixed on the sliding frame 11 and a connecting pipe 62 installed on the air pump 61. One end of the connecting pipe 62 far from the air pump 61 is communicated with the inflation groove 5. Then under the action of the air pump 61, the inflation groove 5 can be inflated and air can be extracted. When inflating the inflation groove 5, the elastic fixing belt 14 will expand and be stretched, and then squeeze the packaging bag 001 to abut against the inner wall of the first fixing ring 12. When extracting air from the inflation groove 5, the elastic fixing belt 14 can be adsorbed to bulge towards the axis direction of the feeding pipe 03. At the same time, chamfers are arranged at the upper and lower ends of the second fixing ring 13, and when removing the filled packaging bag 001, the side contact of the elastic fixing belt 14 against the inner side of the packaging bag 001 can be reduced.

[0040] Refer to Figures 3 to 5, the connecting component 4 includes an installation cylinder 41 fixed on the sliding frame 11, a first connecting ring 42 slidably connected to the installation cylinder 41, a first connecting rod 43 fixed on the first connecting ring 42, a second connecting ring 44 slidably connected to the installation cylinder 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. One end of the first connecting rod 43 away from the first connecting ring 42 is fixed on the folding component 3, one end of the second connecting rod 45 away from the second connecting ring 44 is fixed on the pushing component 2, and one end of the connecting spring 46 away from the first connecting ring 42 is fixed on the second connecting ring 44.

[0041] Referring to 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 provided 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 that 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 fixing ring 13. After the packaging bag 001 is fixed, when the pushing ring 21 moves downward, the lower end of the pushing ring 21 will first contact the packaging bag 001 sleeved on the second fixing ring 13, and then when the pushing ring 21 gradually moves downward, it will push the packaging bag 001 above the second fixing ring 13 to open outward, making the opening at the upper end of the packaging bag 001 the largest, and then facilitating the subsequent folding component 3 to push the packaging bag 001 above the second fixing ring 13 to fold.

[0042] Referring to Figures 3 to 7 , the folding component 3 includes an installation ring 31 slidably connected to the sliding frame 11 and a plurality of folding plates 32 fixed on the installation ring 31. The folding plates 32 are arranged in an arc-shaped structure. A control member 33 for driving the installation ring 31 to move up and down is provided on the sliding frame 11. In this embodiment, the control member 33 is set 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 installation ring 31; the plurality of folding plates 32 are evenly spaced along the circumferential direction of the installation ring 31, and 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, there is a spaced arrangement between the inner wall of the folding plate 32 and the outer wall of the first fixing ring 12. When the installation ring 31 drives the plurality of folding plates 32 to move downward, the plurality of 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 faces outward. Then, the folded packaging bag 001 is located 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 plurality of folding plates 32 will abut against the inner side of the folded packaging bag 001.

[0043] Referring to Figures 3 to 7, an arc surface 51 is provided at one end of the folding plate 32 away from the mounting ring 31. Then, during the downward movement of the folding plate 32, the arc surface 51 first abuts against the packaging bag 001, and then during the process of pushing the opening of the packaging bag 001 to fold, 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.

[0044] After the metal powder in the packaging bag 001 is filled, the air pump 61 evacuates air, and the elastic fixing belt 14 will reset. At this time, there will still be a small amount of dust floating upward. At this time, since the opening of the packaging bag 001 is folded outward, the dust sticking to the opening of the packaging bag 001 can be reduced. Then, directly pull the packaging bag 001 downward, and at this time, directly remove the packaging bag 001 from between the folding plate 32 and the first fixing ring 12, thereby achieving the purpose of reducing the dust sticking to the opening of the packaging bag 001. In addition, in order to facilitate the folding plate 32 to push the opened packaging bag 001 to fold, a plurality of relief grooves 52 for the folding plate 32 to pass through are provided on the pushing ring 21, and the plurality of relief grooves 52 correspond to the plurality of folding plates 32 one by one.

[0045] After the packaging bag 001 is fixed by the fixing assembly 1, the control cylinder is used to drive the mounting ring 31 and the folding plate 32 on the mounting ring 31 to move downward. 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 during the continuous movement of the pushing ring 21, it will push the opening of the packaging bag 001 to open. After the opening of the packaging bag 001 is opened, the pushing ring 21 will abut against the blocking plate 15. At this time, the pushing ring 21 cannot continue to move. Then, during the continuous downward movement of the mounting ring 31, it will pass through the relief groove 52 and then slide in the relief groove 52, and finally abut against the opening of the opened packaging bag 001 through the relief groove 52. Then, under the limitation of the first fixing ring 12, the opened packaging bag 001 can be pushed to fold outward, so that the material sticking to the opening of the packaging bag 001 can be reduced during the subsequent filling process.

[0046] Refer to Figures 3 to 7 , a spreading ring 7 is fixedly installed at the lower end of the first fixing ring 12. 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 circumferential direction of the spreading ring 7. The spreading rods 71 are gradually inclined downward along the axial direction of the material pipe 03 away from the second fixing ring 13. Then, the plurality of spreading rods 71 will form an inverted conical structure. Since the opening at the lower end is small, it is convenient for the packaging bag 001 to be sleeved on the second fixing ring 13.

[0047] Refer to Figures 1 to 4A driving assembly 8 for driving the sliding frame 11 to move up and down on the frame 01 is provided 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 on 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.

[0048] Reference Figures 1 to 4 A support plate 9 is provided on the control frame, and the support plate 9 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.

[0049] The implementation principle of the metal powder filling device of the embodiment of the present application is as follows: when filling the metal powder, the packaging bag 001 is sleeved 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 inflation groove 5 is inflated by the inflation 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 cylinder is controlled to The installation ring 31 is driven to move downward. During the movement of the installation 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 be folded. After the folded packaging bag 001, 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 floating dust from sticking to the opening of the packaging bag 001.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A metal powder filling device, comprising a frame (01), a hopper (02) arranged on the frame (01), and a blanking pipe (03) fixed to the bottom of the hopper (02), characterized in that: The frame (01) is provided with a fixing assembly (1) for fixing the opening of the packaging bag (001), the fixing assembly (1) comprising 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), an elastic fixing belt (14) arranged on the second fixing ring (13), and a blocking plate (15) for blocking the second fixing ring (13), the blocking plate (15) being slidably connected to the discharge pipe (03), and the outer diameter of the second fixing ring (13) being smaller than An annular inflation groove (5) is provided on the inner diameter of the first fixing ring (12) and on the outer side surface of the second fixing ring (13); the elastic fixing belt (14) is used to seal the opening of the annular inflation groove (5); a gap is left between the first fixing ring (12) and the second fixing ring (13) for the packaging bag (001) to pass through; and an inflation component (6) for inflating the annular inflation groove (5) is provided on the sliding frame (11); when the inflation groove (5) is inflated, the elastic fixing belt (14) expands in a direction close to the inner wall of the first fixing ring (12).

2. The metal powder filling device according to claim 1, characterized in that: The sliding frame (11) is provided with a folding assembly (3) for folding the opening position of the packaging bag (001) outwards. The folding assembly (3) comprises 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 plurality of folding plates (32) are evenly spaced along the circumference of the mounting ring (31). The inner diameter of the folding plate (32) is larger than the outer diameter of the first fixed ring (12). When the folding plate (32) moves downwards, it pushes the packaging bag (001) to fold outwards. After folding, the packaging bag (001) is located between the inner wall of the folding plate (32) and the outer wall of the first fixed ring (12). The sliding frame (11) is provided with a control member (33) for driving the mounting ring (31) to move.

3. The metal powder filling device according to claim 1, wherein: The feed tube (03) is provided with a connecting component (4), and the connecting component (4) is provided with a pushing component (2) for pushing the packaging bag (001) above the first fixing ring (12) to open outward; the pushing component (2) comprises a pushing ring (21) arranged on the mounting component, a pushing surface (22) arranged on the pushing ring (21), and a plurality of clearance grooves (52) provided on the pushing ring (21), the plurality of clearance grooves (52) and the plurality of folding plates (32) corresponding to each other one by one, the folding plates (32) being slidably connected in the clearance grooves (52), and the pushing surface (22) making the lower end diameter of the pushing ring (21) smaller than the upper end diameter.

4. The metal powder filling device according to claim 3, wherein: The connecting component (4) includes a mounting cylinder (41) sliding on the blanking pipe (03), a first connecting ring (42) slidably connected to the mounting cylinder (41), a first connecting rod (43) fixed to the first connecting ring (42), a second connecting ring (44) slidably connected to the mounting cylinder (41), a second connecting rod (45) fixed to the second connecting ring (44), and a connecting spring (46) fixed to the first connecting ring (42). One end of the connecting spring (46) away from the first connecting ring (42) is fixed to the second connecting ring (44). The second connecting rod (45) is connected to the pushing component (2), and the mounting cylinder (41) is fixedly installed on the sliding frame (11).

5. The metal powder filling device according to claim 2, wherein: The inflating component (6) includes an air pump (61) fixed to the sliding frame (11) and a connecting pipe (62) fixed to the air pump (61). One end of the connecting pipe (62) away from the air pump (61) is fixed to the second fixing ring (13) and is in communication with the inflating groove (5) on the second fixing ring (13).

6. The metal powder filling device according to claim 5, wherein: The elastic fixing belt (14) protrudes towards the axis direction of the blanking pipe (03), and chamfers are provided at the upper and lower ends of the second fixing ring (13).

7. A metal powder filling device according to claim 2, characterized in that: A spreading ring (7) is fixedly installed at the lower end of the first fixing ring (12). A plurality of spreading rods (71) are fixed to the spreading ring (7), and the spreading rods (71) are gradually inclined towards the axis direction of the blanking pipe (03) along the direction away from the second fixing ring (13).

8. A metal powder filling device according to claim 7, characterized in that: An arc surface (51) is provided on the side of the folding plate (32) away from the mounting ring (31).

9. The metal powder filling device according to claim 2, characterized in that: The control member (33) is set as a control cylinder. The cylinder body of the control cylinder is fixed to the sliding frame (11), and the piston rod is fixed to the mounting ring (31) and is used to drive the mounting ring (31) to move up and down on the sliding frame (11).

10. A metal powder filling device according to claim 1, characterized in that: A driving component (8) for driving the sliding frame (11) to move up and down on the frame (01) is provided on the frame (01). The driving component (8) includes a driving frame (81) slidably connected to the frame (01) and a driving cylinder fixed to the driving frame (81). The cylinder body of the driving cylinder is fixed to the frame (01), and the piston rod is fixed to the driving frame (81).

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