CN115593667A

CN115593667A - Closed cobalt powder packing split charging ware

Info

Publication number: CN115593667A
Application number: CN202211612720.4A
Authority: CN
Inventors: 起金秀
Original assignee: Quanzhou Reverse Scale Technology Co ltd
Current assignee: Quanzhou Reverse Scale Technology Co ltd
Priority date: 2022-12-15
Filing date: 2022-12-15
Publication date: 2023-01-13
Anticipated expiration: 2042-12-15
Also published as: CN115593667B

Abstract

The invention relates to the technical field of cobalt powder processing, in particular to a closed type cobalt powder packaging and subpackaging device. The invention provides a closed type cobalt powder packaging and subpackaging device which can immediately extrude air at the position of a bag opening after bagging. The invention provides a closed type cobalt powder packaging and subpackaging device which comprises a rack, a discharging hopper, a lifting scale pan, a discharging mechanism, an automatic closing mechanism and an exhaust mechanism, wherein the discharging hopper and the lifting scale pan are arranged on the rack, the discharging mechanism, the automatic closing mechanism and the exhaust mechanism are used for exhausting air at a bag opening, the discharging mechanism is arranged at the lower part of the discharging hopper, and the automatic closing mechanism is arranged among the rack, the discharging hopper and the discharging mechanism. After the cobalt powder is packaged and subpackaged, and the weight of the packaged cobalt powder reaches a certain value, the baffle plate is closed inwards through the matching between the pull plate and the rack sliding frame, the blanking is automatically stopped, and the quantitative packaging effect can be realized.

Description

Closed cobalt powder packing split charging ware

Technical Field

The invention relates to the technical field of cobalt powder processing, in particular to a closed type cobalt powder packaging and subpackaging device.

Background

Cobalt powder is a powdery material flow, is mainly applied to the industries of aviation, spaceflight, electrical appliances, machinery manufacturing, chemistry and ceramics, and must be bagged after the cobalt powder is produced, and the cobalt powder is generally packaged in a closed mode at present, so that the powder can be prevented from flying.

Patent publication No. CN114872942A discloses a cobalt powder racking machine, including cobalt powder storage container and partial shipment subassembly, the partial shipment subassembly includes: the material distribution cavity is communicated with a feed opening of the cobalt powder storage container, the material distribution cavity is provided with a plurality of quantitative hoppers, and each quantitative hopper is provided with a first valve; the material stirring frame is positioned in the material distributing cavity; the driving unit drives the material stirring frame to rotate so as to stir the cobalt powder in the material distributing cavities into the quantitative hoppers; the material distribution cavity is of a circular structure, each quantitative hopper is arranged along the circumferential direction of the material distribution cavity, and a loading cavity is arranged below the material distribution cavity.

When the bagging-off, need overlap the sack in second valve lower part, the cobalt powder enters into the sack the inside through the second valve and fills with the back, then closes the second valve to need take off the sack and seal, but can not extrude the air of sack position immediately after the bagging-off is accomplished, research and develop now a closed cobalt powder packing partial shipment ware that can extrude the air of sack position immediately after the bagging-off is accomplished.

Disclosure of Invention

In order to overcome the defect that air at the position of a bag opening cannot be extruded immediately after bagging of an existing cobalt powder subpackaging machine is completed, the invention provides a closed type cobalt powder packaging and subpackaging machine which can extrude the air at the position of the bag opening immediately after bagging is completed.

The closed cobalt powder packaging and subpackaging device comprises a rack, a blanking hopper and a lifting scale plate, wherein the rack is provided with the blanking hopper and the lifting scale plate, the device further comprises a blanking mechanism, an automatic closing mechanism and an exhaust mechanism for exhausting air at a bag opening, the blanking mechanism is arranged at the lower part of the blanking hopper, the rack is provided with the automatic closing mechanism between the blanking hopper and the blanking mechanism, a bag is placed on the lifting scale plate, the blanking mechanism starts blanking, the lifting scale plate moves downwards to contact with the automatic closing mechanism after the bag subpackages the cobalt powder, the automatic closing mechanism drives the blanking mechanism to plug a blanking opening at the lower part of the blanking hopper to stop blanking, the exhaust mechanism comprises a moving assembly, an exhaust plate and an exhaust torsion spring, the left side and the right side of the lower part of the rack are respectively provided with a moving assembly, the inner side of the moving assembly is respectively connected with the exhaust plate, the front side and the rear side of the exhaust plate and the moving assembly are respectively connected with the exhaust torsion spring, after the blanking hopper stops blanking, the automatic closing mechanism releases the moving assembly, the moving assembly drives the exhaust plate to move inwards, the exhaust torsion spring drives the exhaust plate to tightly stick to the bag at the bag opening, and extrude the gas at the bag.

Optionally, unloading mechanism is including the rack carriage, stopping plate and unloading gear, and hopper lower part outer wall slidingtype is connected with the rack carriage down, and the equal rotary type in hopper lower part left and right sides is connected with and is used for carrying out the stopping plate that blocks the cobalt powder down, and the stopping plate front portion all is connected with the unloading gear, unloading gear intermeshing, the unloading gear meshing on rack carriage lower part and right side, rack carriage downstream drives the unloading geared rotation, and the stopping plate is opened to the outside rotation and is carried out the unloading.

Optionally, the self-sealing mechanism comprises a pulling plate, a return spring, clamping assemblies and a pull rope, the pulling plate is connected to the left side and the right side of the lower portion in the rack in a sliding mode, the lower portion of the pulling plate is in a convex shape, the return spring is connected between the bottom of the pulling plate and the rack, the pull rope is connected to the top end of the pulling plate, the pull rope bypasses a lower hopper, the clamping assemblies used for clamping the rack sliding frame are connected to the left side and the right side of the lower portion of the lower hopper, the clamping assemblies are composed of clamping pieces and the return spring, the clamping pieces are connected to the lower hopper in a sliding mode, the return spring is connected between the outer sides of the clamping pieces and the lower hopper, the top of each clamping assembly is connected to the upper end of the pull rope, the lifting scale plate moves downwards in blanking, when the lifting scale plate contacts with the protruding position of the pulling plate, cobalt powder is about to be filled in the bag, the pulling plate is pulled downwards, the clamping assemblies are driven to release the rack sliding frame through the pull rope, and the blocking plate rotates inwards to close to block the cobalt powder.

Optionally, the moving assembly comprises an I-shaped clamping rod and a clamping spring, the I-shaped clamping rod is connected to the left side and the right side of the lower portion of the rack in a sliding mode, the I-shaped clamping rod is connected with the exhaust plate in a rotating mode, the exhaust torsion spring is wound on the I-shaped clamping rod and connected with the I-shaped clamping rod, the clamping spring is connected between the I-shaped clamping rod and the rack, the pulling plate moves downwards to release the I-shaped clamping rod, the clamping spring drives the I-shaped clamping rod to move inwards, and the I-shaped clamping rod drives the exhaust plate to move inwards.

Optionally, still including when the partial shipment is about to accomplish, slow down the mechanism that slows down of the unloading speed of cobalt powder, slow down the mechanism including promoting the rack, rotary gear and striker plate, lower hopper lower part internal rotation formula is connected with the striker plate that is used for blockking the cobalt powder, the welding of striker plate front portion has rotary gear, the last front side welding of right part pulling plate has the promotion rack, promote rack and rotary gear meshing, when the lift balance moves down the contact pulling plate bulge position, the partial shipment is about to accomplish, the pulling plate moves down, drive rotary gear through promoting the rack and rotate, the striker plate rotates into the horizontality, reduce the discharge gate of lower part of hopper down, slow down the unloading speed of cobalt powder.

Optionally, the auxiliary clamping mechanism is used for assisting in clamping the bag opening, the auxiliary clamping mechanism comprises a clamping plate and a clamping torsion spring, the clamping plate used for clamping the bag opening is rotatably connected to the left side and the right side of the lower portion of the lower hopper, the upper portion of the clamping plate is located on the upper portion of the rack sliding frame, and the clamping torsion springs are connected between the front side and the rear side of the clamping plate and the lower hopper.

Optionally, the bag opening device further comprises a side opening mechanism for opening the front side and the rear side of the bag opening, the side opening mechanism comprises a guide sleeve, a support plate and a support spring, the guide sleeve is welded on the front side and the rear side of the lower portion of the discharging hopper, the support plate for opening the bag opening is connected to the guide sleeve in a sliding mode, and the support spring is connected between the support plate and the discharging hopper.

Optionally, the shape of the lower portion of the exhaust plate is a concave arc shape, and the concave arc position of the exhaust plate is attached to the bag opening during inward movement and exhaust of the exhaust plate.

The beneficial effects are that: 1. after the cobalt powder is packaged and subpackaged, and the weight of the packaged cobalt powder reaches a certain value, the baffle plate is closed inwards through the matching between the pull plate and the rack sliding frame, the blanking is automatically stopped, and the quantitative packaging effect can be realized.

2. After bagging is completed, the pull plate moves downwards to loosen the H-shaped clamping rod, so that the H-shaped clamping rod moves inwards to drive the exhaust plate to automatically extrude air at the bag opening, and the effect of exhausting air immediately after packaging and subpackaging is achieved, and the phenomenon that the air can influence storage of cobalt powder is avoided.

3. When the split charging is to be completed, the pull plate moves downwards to drive the rotary gear to rotate through the push rack, so that the material baffle plate slows down the blanking speed of the cobalt powder, and the cobalt powder is prevented from overflowing out of the bag opening to cause waste of the cobalt powder.

4. According to the invention, through the matching between the clamping torsion spring and the clamping plate, the clamping plate can clamp the bag opening, so that the packaging and subpackaging stability can be improved, in addition, the front side and the rear side of the bag opening are propped open by the support plate, and the cobalt powder can extrude and discharge air out of the bag opening during subpackaging, so that the cobalt powder can enter the bag better.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a partial perspective view of the present invention.

Fig. 3 is a schematic view of a first perspective cross-sectional three-dimensional structure of the blanking mechanism of the present invention.

Fig. 4 is a schematic view of a second perspective cross-sectional three-dimensional structure of the blanking mechanism of the present invention.

Fig. 5 is a first perspective view of the self-sealing mechanism of the present invention.

Fig. 6 is a schematic perspective view of a second perspective view of the self-sealing mechanism of the present invention.

Fig. 7 is a first perspective view of the venting mechanism of the present invention.

Fig. 8 is a perspective view of a second perspective view of the venting mechanism of the present invention.

Fig. 9 is a schematic perspective view of the slowing mechanism of the present invention.

Fig. 10 is a perspective view of the auxiliary clamping mechanism of the present invention.

Fig. 11 is a schematic cross-sectional three-dimensional structure of the side spreading mechanism of the present invention.

Fig. 12 is a schematic perspective view of the side expanding mechanism of the present invention.

In the reference symbols: 1-a frame, 2-a blanking hopper, 3-a lifting scale, 4-a blanking mechanism, 41-a rack sliding frame, 42-a material stopping plate, 43-a blanking gear, 5-an automatic closing mechanism, 51-a pulling plate, 52-a return spring, 53-a clamping component, 54-a pulling rope, 6-an exhaust mechanism, 61-an I-shaped clamping rod, 62-a clamping spring, 63-an exhaust plate, 64-an exhaust torsion spring, 7-a retarding mechanism, 71-a pushing rack, 72-a rotating gear, 73-a material stopping plate, 8-an auxiliary clamping mechanism, 81-a clamping plate, 82-a clamping torsion spring, 9-a side opening mechanism, 91-a guide sleeve, 92-a supporting plate and 93-a supporting spring.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Example 1

A closed type cobalt powder packaging and subpackaging device is shown in figures 1-8 and comprises a frame 1, a lower hopper 2, a lifting scale pan 3, a blanking mechanism 4, an automatic closing mechanism 5 and an exhaust mechanism 6, wherein the lower hopper 2 is arranged on the upper portion of the frame 1, the lifting scale pan 3 is connected to the lower portion in the frame 1, the lifting scale pan 3 consists of a scale pan and an elastic piece, the scale pan is connected to the lower portion in the frame 1 in a sliding manner, the elastic piece is connected between the bottom of the scale pan and the lower portion of the frame 1, the blanking mechanism 4 is arranged on the lower portion of the lower hopper 2, the blanking mechanism 4 comprises a rack sliding frame 41, a material blocking plate 42 and a blanking gear 43, the outer wall of the lower portion of the lower hopper 2 is connected with a rack sliding frame 41 in a sliding manner, the material blocking plates 42 are rotatably connected to the left and right sides of the lower portion of the lower hopper 2, the front portions of the material blocking plates 42 are connected with blanking gears 43, the blanking gears 43 are meshed with each other, and the lower portions of the rack sliding frame 41 are meshed with the blanking gears 43 on the right side; an automatic closing mechanism 5 is connected between the rack 1 and the blanking mechanism 4, the automatic closing mechanism 5 comprises a pulling plate 51, a return spring 52, a clamping assembly 53 and a pulling rope 54, the pulling plate 51 is connected with the left side and the right side of the inner lower part of the rack 1 in a sliding manner, the lower part of the pulling plate 51 is in a convex shape, the return spring 52 is connected between the bottom of the pulling plate 51 and the rack 1, the pulling rope 54 is connected with the top end of the pulling plate 51, the pulling rope 54 bypasses the blanking hopper 2, the clamping assembly 53 is connected with the left side and the right side of the lower part of the blanking hopper 2, the clamping assembly 53 consists of a clamping piece and a return spring, the clamping piece is connected on the blanking hopper 2 in a sliding manner, the return spring is connected between the outer side of the clamping piece and the blanking hopper 2, and the top of the clamping assembly 53 is connected with the upper end of the pulling rope 54; be equipped with exhaust mechanism 6 on frame 1, exhaust mechanism 6 is including worker's shape clamping bar 61, clamping spring 62, exhaust plate 63 and exhaust torsional spring 64, the equal sliding type in the left and right sides of frame 1 lower part has worker's shape clamping bar 61, pulling plate 51 and worker's shape clamping bar 61 extrusion fit, all be connected with two clamping spring 62 between worker's shape clamping bar 61 and the frame 1, clamping spring 62 is around establishing on worker's shape clamping bar 61, the inboard equal rotary type of worker's shape clamping bar 61 is connected with exhaust plate 63, the shape of exhaust plate 63 lower part is concave circular arc shape, can better laminate on the sack, all be connected with exhaust torsional spring 64 between both sides and the worker's shape clamping bar 61 around the exhaust plate 63.

When the cobalt powder is packed and subpackaged, firstly, the cobalt powder is poured into the lower hopper 2, the rack 1 is opened, then the bag is placed on the lifting scale 3, the bag opening is adhered to the outer wall of the lower part of the lower hopper 2, then the rack sliding frame 41 moves upwards and is clamped by the clamping component 53, the baffle plate 42 is automatically opened towards the outer side through the discharging gear 43, the rack 1 can be closed, the process of packing and subpackaging the cobalt powder can be closed, air is prevented from entering the rack 1, meanwhile, the cobalt powder is prevented from flying upwards, then the cobalt powder begins to fall into the bag, as the cobalt powder in the bag is increased, the weight of the bag is increased, the scale is driven downwards, the elastic part is compressed, when the scale moves downwards to contact with the lower part of the pull plate 51, the pull plate 51 is driven to move downwards, the spring 52 is compressed, the clamping component 53 is driven by the pull rope 54 to loosen the rack sliding frame 41, the rack sliding rack 41 automatically moves downwards and closes the material stopping plate 42, so that the quantitative packaging effect can be realized, in addition, when the pulling plate 51 moves downwards and is far away from the H-shaped clamping rod 61, the H-shaped clamping rod 61 moves inwards and resets due to the elasticity of the clamping spring 62, and drives the exhaust plate 63 and the exhaust torsion spring 64 to move inwards, the exhaust plate 63 extrudes the bag mouth inwards, and under the action of the exhaust torsion spring 64, the exhaust plate 63 can be tightly attached to the bag mouth, the exhaust effect is enhanced, so that the bag mouth can be exhausted immediately after the cobalt powder bagging is finished, the air in the bag is reduced, the storage of the cobalt powder is prevented from being influenced by the air, after the bag is taken out, the scale is driven by the elastic piece to move upwards and reset, the pulling plate 51 moves upwards due to the return spring 52, the pulling plate 51 moves upwards to drive the H-shaped clamping rod 61 to move outwards and reset, thereby driving the exhaust plate 63 to move and reset.

Example 2

On the basis of the embodiment 1, as shown in fig. 2 and 9, the automatic material discharging device further comprises a retarding mechanism 7, wherein the retarding mechanism 7 comprises a pushing rack 71, a rotating gear 72 and a material blocking plate 73, the lower part of the lower hopper 2 is rotatably connected with the material blocking plate 73, the rotating gear 72 is welded at the front part of the material blocking plate 73, the pushing rack 71 is welded at the upper front side of the right pulling plate 51, and the pushing rack 71 is meshed with the rotating gear 72; when the partial shipment is about to accomplish, pulling plate 51 downstream can drive promotion rack 71 downstream, it then drives rotary gear 72 and carries out clockwise rotation to promote rack 71, thereby make striker plate 73 slowly rotate into the horizontality, can reach the purpose of the unloading speed that slows down the cobalt powder like this, so can avoid the too big cobalt powder that leads to of cobalt powder unloading speed to spill over the sack, thereby lead to the waste of cobalt powder, then can drive when pulling plate 51 upstream and promote rack 71 upstream and reset, and then make striker plate 73 rotate and reset.

As shown in fig. 2 and 10, the auxiliary clamping mechanism 8 is further included, the auxiliary clamping mechanism 8 includes a clamping plate 81 and a clamping torsion spring 82, the clamping plate 81 is rotatably connected to the left and right sides of the lower portion of the lower hopper 2, the upper portion of the clamping plate 81 is located on the upper portion of the rack carriage 41, and the clamping torsion spring 82 is connected between the front and rear sides of the clamping plate 81 and the lower hopper 2; when placing the sack, can overlap the sack in hopper 2 lower part positions down to under the effect of pressing from both sides tight torsional spring 82, make clamp plate 81 press from both sides tightly the sack, can avoid the sack to break away from downwards like this, improve the stability of packing partial shipment.

As shown in fig. 2, 11 and 12, the device further comprises a side spreading mechanism 9, wherein the side spreading mechanism 9 comprises guide sleeves 91, support plates 92 and support springs 93, the guide sleeves 91 are welded on the front side and the rear side of the lower part of the lower hopper 2, the support plates 92 are connected on the guide sleeves 91 in a sliding manner, and the support springs 93 are connected between the support plates 92 and the lower hopper 2; after fixing the sack, under supporting spring 93's effect, can make backup pad 92 strut the front and back both sides of sack for the sack enlarges, can be in the partial shipment, and cobalt powder can extrude the discharge sack with the air, so that better let cobalt powder enter into the sack.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A closed type cobalt powder packaging and subpackaging device comprises a machine frame (1), a discharging hopper (2) and a lifting scale (3), wherein the machine frame (1) is provided with the discharging hopper (2) and the lifting scale (3), and is characterized by further comprising a discharging mechanism (4), an automatic closing mechanism (5) and an exhaust mechanism (6) for exhausting air at a bag opening, the discharging mechanism (4) is arranged at the lower part of the discharging hopper (2), the automatic closing mechanism (5) is arranged between the machine frame (1), the discharging hopper (2) and the discharging mechanism (4), a bag is arranged on the lifting scale (3), the discharging mechanism (4) starts to discharge after the bag loads cobalt powder, the lifting scale (3) is moved downwards to contact the automatic closing mechanism (5), the automatic closing mechanism (5) drives the discharging mechanism (4) to block the discharging opening at the lower part of the discharging hopper (2) to stop discharging, the discharging mechanism (6) is arranged on the machine frame (1), the exhaust mechanism (6) comprises a movable component, an exhaust plate (63) and an exhaust spring (64), the exhaust spring (1) and the exhaust spring (64) is arranged between the left side and the right side of the movable component, the movable component and the exhaust plate (1), the movable component are respectively, the exhaust mechanism (63), the inner sides of the exhaust mechanism (64) and the exhaust component, the exhaust mechanism (1), the exhaust mechanism (64) are respectively, the movable component and the exhaust plate (64), the automatic closing mechanism (5) releases the moving component, the moving component drives the exhaust plate (63) to move inwards, the exhaust torsion spring (64) drives the exhaust plate (63) to be tightly attached to the bag opening, and the exhaust plate (63) moves inwards to extrude and exhaust gas at the bag opening.

2. The closed type cobalt powder packaging and subpackaging device according to claim 1, wherein the blanking mechanism (4) comprises a rack sliding frame (41), a material blocking plate (42) and a blanking gear (43), the outer wall of the lower portion of the lower hopper (2) is connected with the rack sliding frame (41) in a sliding mode, the material blocking plate (42) used for blocking cobalt powder is connected to the left side and the right side of the lower portion of the lower hopper (2) in a rotating mode, the blanking gear (43) is connected to the front portion of the material blocking plate (42), the blanking gears (43) are meshed with each other, the blanking gears (43) on the lower portion and the right side of the rack sliding frame (41) are meshed, the rack sliding frame (41) moves downwards to drive the blanking gear (43) to rotate, and the material blocking plate (42) rotates outwards to open for blanking.

3. A closed type cobalt powder packaging and subpackaging device according to claim 2, wherein the automatic closing mechanism (5) comprises a pulling plate (51), a return spring (52), a clamping component (53) and a pulling rope (54), the pulling plate (51) is connected on the left side and the right side of the inner lower part of the frame (1) in a sliding way, the lower part of the pulling plate (51) is in a convex shape, the return spring (52) is connected between the bottom of the pulling plate (51) and the frame (1), the top end of the pulling plate (51) is connected with the pulling rope (54), the pulling rope (54) bypasses the lower hopper (2), the clamping component (53) for clamping the rack sliding frame (41) is connected on the left side and the right side of the lower hopper (2), the clamping component (53) consists of a clamping piece and a return spring, the clamping piece is connected on the lower hopper (2) in a sliding way, the return spring is connected between the outer side of the clamping piece and the pulling rope, the top of the clamping component (53) is connected with the upper end of the pulling rope (54), when the lifting scale pan (3) moves downwards along with the blanking process, when the lifting scale pan (3) contacts the protruding position of the pulling plate (51), the cobalt powder in the bag is about to be filled, the pulling plate (51) is pulled downwards, the clamping assembly (53) is driven by the pull rope (54) to loosen the rack sliding frame (41), and the material stopping plate (42) rotates inwards to close and stop the cobalt powder.

4. A closed type cobalt powder packaging and subpackaging device according to claim 1, wherein the moving assembly comprises an I-shaped clamping rod (61) and a clamping spring (62), the I-shaped clamping rod (61) is connected to the left side and the right side of the lower portion of the frame (1) in a sliding mode, the I-shaped clamping rod (61) is rotatably connected with an exhaust plate (63), an exhaust torsion spring (64) is wound on the I-shaped clamping rod (61) and connected with the I-shaped clamping rod (61), the clamping spring (62) is connected between the I-shaped clamping rod (61) and the frame (1), the pulling plate (51) moves downwards to release the I-shaped clamping rod (61), the clamping spring (62) drives the I-shaped clamping rod (61) to move inwards, and the I-shaped clamping rod (61) drives the exhaust plate (63) to move inwards.

5. The closed type cobalt powder packaging and subpackaging device according to claim 3, further comprising a retarding mechanism (7) for retarding the blanking speed of the cobalt powder when subpackaging is to be completed, wherein the retarding mechanism (7) comprises a pushing rack (71), a rotating gear (72) and a material blocking plate (73), the material blocking plate (73) for blocking the cobalt powder is rotatably connected to the lower portion of the discharging hopper (2), the rotating gear (72) is welded to the front portion of the material blocking plate (73), the pushing rack (71) is welded to the upper front side of the right pulling plate (51), the pushing rack (71) is meshed with the rotating gear (72), when the lifting scale plate (3) moves downwards to contact with the protruding position of the pulling plate (51), subpackaging is to be completed, the pulling plate (51) moves downwards, the rotating gear (72) is driven by the pushing rack (71) to rotate, the material blocking plate (73) rotates to be in a horizontal state, a blanking port at the lower portion of the discharging hopper (2) is reduced, and the blanking speed of the cobalt powder is slowed down.

6. A closed type cobalt powder packaging and subpackaging device according to claim 2, further comprising an auxiliary clamping mechanism (8) for assisting in clamping a bag opening, wherein the auxiliary clamping mechanism (8) comprises a clamping plate (81) and a clamping torsion spring (82), the clamping plate (81) for clamping the bag opening is rotatably connected to the left side and the right side of the lower portion of the lower hopper (2), the upper portion of the clamping plate (81) is located at the upper portion of the rack sliding frame (41), and the clamping torsion spring (82) is connected between the front side and the rear side of the clamping plate (81) and the lower hopper (2).

7. A closed type cobalt powder packaging and subpackaging device according to claim 1, further comprising a side opening mechanism (9) for opening the front and rear sides of the bag opening, wherein the side opening mechanism (9) comprises a guide sleeve (91), a support plate (92) and a support spring (93), the guide sleeve (91) is welded on the front and rear sides of the lower portion of the lower hopper (2), the support plate (92) for opening the bag opening is connected to the guide sleeve (91) in a sliding manner, and the support spring (93) is connected between the support plate (92) and the lower hopper (2).

8. The closed type cobalt powder packaging and subpackaging device according to claim 1, wherein the shape of the lower part of the exhaust plate (63) is a concave arc shape, the exhaust plate (63) is in inward movement and exhaust, and the concave arc position of the exhaust plate (63) is attached to the bag opening.