Powder feeding device

Abstract

The utility model belongs to the technical field of battery manufacturing, and particularly relates to a powder feeding device which comprises a bag opening device, and the bag opening device comprises a rotating piece, a hook body and a cutter body. The rotating piece can rotate by taking the middle part of the rotating piece as an axis; the hook body is arranged at one end of the rotating part, can move along with the rotating part and can hook a pull rope at the bottom of the ton bag; the cutter body is arranged at the other end of the rotating part, can move along with the rotating part, and can cut a metal film at the bottom of the ton bag; compared with the prior art, the powder feeding device has the advantages that the graphite cathode powder ton bags can be sequentially unpacked from the outer layer to the inner layer, automatic bag unpacking is achieved, and potential safety hazards caused by manual bag unpacking are eliminated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to battery manufacturing technical field, especially relate to a powder feeding device. BACKGROUND

[0002] The graphite negative electrode powder feeding is a part of the secondary battery manufacturing process, especially for the negative electrode material preparation of the battery. The graphite as the negative electrode material has good electrochemical performance, low cost and high safety, and is widely used in the secondary battery.

[0003] The traditional feeding machine mainly includes conveying mechanism, bag opening mechanism and suction mechanism. For the graphite negative electrode powder, the current machine is difficult to solve the point that the traditional bag opening mechanism mainly uses violent shearing tons of bags, which can introduce impurities such as fibers and metals, and affect the performance of the negative electrode product.

[0004] The graphite negative electrode powder packaging method, that is, the tons of bag structure, is different from most powder packaging. In order to reduce the fiber impurities, the graphite negative electrode tons of bag is divided into two layers, the outer bag is a hard polymer fiber, and the inner bag is an aluminum bag. The general bag opening method needs to manually lift the crane, pull the fiber outer bag bottom pull rope, and cut the inner bag metal film, which consumes more manpower and has high operation danger. UTILITY MODEL CONTENTS

[0005] The utility model aims at the above-mentioned technical problems, and provides a powder feeding device, which can complete the outer layer to the inner layer of the graphite negative electrode powder tons of bag in turn, realize automatic bag opening, and eliminate the safety hazard of manual bag opening.

[0006] Therefore, the utility model provides a powder feeding device, which comprises a bag opener, and the bag opener comprises:

[0007] A rotating part, which can rotate around the middle part as the shaft;

[0008] A hook body, which is arranged at one end of the rotating part, can move with the rotating part, and can hook the pull rope at the bottom of the tons of bag;

[0009] A cutter body, which is arranged at the other end of the rotating part, can move with the rotating part, and can cut the metal film at the bottom of the tons of bag.

[0010] In the technical solution, the bag opener is installed above the hopper, the ton bag containing the graphite negative electrode powder is transferred to the upper part of the bag opener, and the rotating part is started to rotate. During the process, the two ends of the rotating part move together with the hook body and the cutter body. The hook body will first contact the pull rope at the bottom of the ton bag and hook the pull rope. During the continuous rotation of the rotating part, the hook body will move with the pull rope to break the outer bag of the ton bag, so that the inner bag metal film of the ton bag is exposed. With the continuous rotation of the rotating part, the cutter body contacts the inner bag metal film and cuts the inner bag metal film, so that the graphite negative electrode powder in the ton bag enters the hopper under the action of gravity.

[0011] In the above technical solution, further, the hook body comprises a line hooking claw and a spring baffle, the line hooking claw and the spring baffle form a limiting space for limiting the end of the pull rope, and the spring baffle can open and close the limiting space.

[0012] In the above technical solution, further, the spring baffle comprises a first baffle and a second baffle, a first end of the first baffle is rotationally connected to one end of the line hooking claw close to the rotating part, a first end of the second baffle is rotationally connected to a free end of the line hooking claw, a torsional spring is arranged at the connection between the first baffle and the line hooking claw, a torsional spring is also arranged at the connection between the second baffle and the line hooking claw, and a second end of the second baffle is in contact with a second end of the first baffle.

[0013] In the above technical solution, further, the powder feeding device further comprises:

[0014] The clamping claw can clamp and release the ton bag.

[0015] The horizontal transfer part is arranged above the bag opener, and the horizontal transfer part can drive the clamping claw to move in the first direction.

[0016] The vertical transfer part can drive the clamping claw to move in the second direction.

[0017] In the above technical solution, further, the horizontal transfer part comprises a horizontal rail and a horizontal pushing cylinder, the clamping claw is slidably arranged on the horizontal rail in the first direction, the horizontal pushing cylinder is arranged on the horizontal rail, the horizontal pushing cylinder can drive the clamping claw to slide on the horizontal rail, and the vertical transfer part can drive the horizontal rail to move in the second direction.

[0018] In the above technical solution, further, the horizontal transfer part comprises a horizontal rail and a horizontal pushing cylinder, the vertical transfer part is slidably arranged on the horizontal rail in the first direction, the horizontal pushing cylinder is arranged on the horizontal rail, the horizontal pushing cylinder can drive the vertical transfer part to slide on the horizontal rail, and the clamping claw is arranged at one end of the vertical transfer part close to the bag opener.

[0019] In the technical scheme, further, the clamping jaw comprises a clamping seat, a plurality of swing jaws and a swing driving member, the swing jaws are distributed along the circumference of the clamping seat, one end of each swing jaw is rotationally connected to the clamping seat, and the swing driving member can simultaneously drive the swing jaws to swing upward or downward.

[0020] In the technical scheme, further, the swing driving member comprises:

[0021] A plurality of transmission gears are rotationally arranged on the clamping seat, the number of the transmission gears is the same as that of the swing jaws, one end of the swing jaw is connected to the transmission gear, and the transmission gear is arranged on the clamping seat.

[0022] A movable seat is arranged between the plurality of transmission gears, a rack is arranged on the side wall of the movable seat along the second direction, and each transmission gear is engaged with the rack.

[0023] A driving cylinder is arranged on the clamping seat, and the driving cylinder can drive the movable seat to reciprocate along the second direction.

[0024] In the technical scheme, further, the powder feeding device further comprises a material conveying device, the lateral transfer member extends above the material conveying device in the first direction, and the material conveying device can convey the ton bag below the lateral transfer member.

[0025] In the technical scheme, further, the powder feeding device further comprises a recycling barrel, and the lateral transfer member extends above the recycling barrel in the first direction.

[0026] The powder feeding device has the following beneficial effects:

[0027] 1. By designing the bag opener as a rotating member, a hook body and a cutter body, the ton bag containing the graphite negative electrode powder is transferred to the bag opening position, and only one rotation of the rotating member is needed to complete the bag opening work, without the need for manual bag opening by workers, thereby eliminating the safety hazards of manual bag opening.

[0028] 2. By cooperation of the clamping jaw, the lateral transfer member and the longitudinal transfer member, the ton bag can be clamped, transferred and released, without the need for manual transfer of the ton bag, thereby reducing the labor intensity of the workers.

[0029] 3. By arranging the material conveying device to continuously transfer the ton bag below the lateral transfer member, the ton bag can be more easily concentrated, and the feeding efficiency of the graphite negative electrode powder is improved.

[0030] 4. By arranging the recycling barrel to recycle the ton bag after feeding, the ton bag can be collected, without the need for workers to clean and remove the ton bag, thereby reducing the labor intensity of the workers. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0032] Figure 1 It is a schematic diagram of the overall structure of the powder feeding device of the present application.

[0033] Figure 2 It is a schematic diagram of the side and front structure of the bag opener in the present application.

[0034] Figure 3 It is a schematic diagram of the bag opening process of the ton bag in the present application.

[0035] Figure 4 It is a schematic diagram of the first connection mode of the horizontal transfer member, the vertical transfer member and the clamping claw in the present application.

[0036] Figure 5 It is a schematic diagram of the second connection mode of the horizontal transfer member, the vertical transfer member and the clamping claw in the present application.

[0037] Figure 6 It is a schematic diagram of the three-dimensional structure of the clamping claw in the present application.

[0038] Figure 7 It is a schematic diagram of the longitudinal cross-sectional structure of the clamping claw in the present application.

[0039] The marks in the figure are:

[0040] 1, bag opener; 101, rotating member; 102, hook body; 1201, hooking claw; 1202, first baffle; 1203, second baffle; 1204, torsional spring; 103, knife body; 2, clamping claw; 201, clamping seat; 202, swinging claw; 203, transmission gear; 204, movable seat; 205, rack; 206, driving cylinder; 3, horizontal transfer member; 301, horizontal rail; 302, horizontal pushing cylinder; 4, vertical transfer member; 5, ton bag; 6, material conveying device; 7, recovery bucket; 8, hopper; 9, vacuum material suction machine; 10, swinging driving member; X, first direction; Y, second direction; DETAILED DESCRIPTION

[0041] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0042] In the description of the present application, it should be noted that the terms used herein are only for describing the specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. In order to facilitate the description, the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship. The technology, method and equipment known to those skilled in the art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0043] In the present application, please refer to Figure 1 The second direction Y is the direction of gravity, the graphite negative electrode powder is loaded on the rack, a hopper 8 is arranged on the rack, a vacuum suction machine 9 is arranged below the hopper 8, the bag opener 1 is arranged above the hopper 8, when loading, the ton bag 5 containing the graphite negative electrode powder is transferred to the upper side of the bag opener 1, after the ton bag 5 is opened by the bag opener 1, the graphite negative electrode powder in the ton bag 5 will enter the hopper 8 under the action of gravity, the vacuum suction machine 9 will collect the graphite negative electrode powder entering the hopper 8 and transfer it to the next process.

[0044] Embodiment 1

[0045] The present embodiment provides a powder loading device, which comprises a bag opener 1, and the bag opener 1 comprises a rotating part 101, a hook body 102 and a cutter body 103.

[0046] Please refer to Figure 2 The rotating part 101 is arranged on the rack through a rotating shaft (not shown in the figure), and the rotating part 101 can rotate around the rotating shaft, the driving of the rotating shaft can be driven by a motor or manually rotated by a worker;

[0047] Please refer to Figure 2The hook 102 is set at one end of the rotating part 101. The hook 102 can move with the rotating part 101 and can hook the pull rope at the bottom of the ton bag 5.

[0048] Please see Figure 2 The blade 103 is located at the other end of the rotating component 101. The blade 103 can move with the rotating component 101 and can cut open the metal film at the bottom of the ton bag 5.

[0049] Please see Figure 3 In this embodiment, the state of the ton bag 5 containing graphite negative electrode powder after being transferred above the bag opener 1 is as follows: Figure 3 As shown in Figure A, the pull rope at the bottom of the ton bag 5 is exposed in a loop outside the ton bag 5, according to... Figure 2 The orientation sequence is determined by a rotating shaft that drives the rotating component 101 to rotate counterclockwise. During this process, the two ends of the rotating component 101 move together with the hook body 102 and the blade body 103, respectively. Figure 3 As shown in Figure B, the hook 102 will first contact the pull rope at the bottom of the ton bag 5 and hook the pull rope. As the rotating part 101 continues to rotate counterclockwise, the hook 102 will move with the pull rope to break open the outer bag of the ton bag 5. After the outer bag is broken open, as shown in Figure B, the hook 102 will first contact the pull rope at the bottom of the ton bag 5 and hook the pull rope. Figure 3 As shown in Figure C, the inner metal film of the ton bag 5 is exposed downwards. As the rotating component 101 continues to rotate, as... Figure 3 As shown in Figure D, the blade 103 contacts the inner bag's metal membrane and cuts it open. After the inner bag is cut open, it appears as follows: Figure 3 As shown in Figure E, the graphite negative electrode powder in the ton bag 5 enters the hopper 8 under the action of gravity.

[0050] In this embodiment, after the graphite negative electrode powder in the ton bag 5 has completely fallen off during feeding, the rotating part 101 can be driven to idle at a speed of 30 rpm for 1 minute to shake off the powder remaining on the surface of the bag opener 1. The workers will clean it regularly to ensure the normal operation of the equipment.

[0051] Example 2

[0052] This embodiment provides a powder feeding device, which, in addition to the technical solutions in the foregoing embodiments, also discloses a structure of the hook body 102;

[0053] In this embodiment, please refer to Figure 2 The hook body 102 includes a hook claw 1201 and a spring baffle. The hook claw 1201 is disposed at the end of the rotating part 101, and the spring baffle is disposed on the hook claw 1201. The hook claw 1201 and the spring baffle form a limiting space for limiting the end of the pull rope. The spring baffle can open and close the limiting space.

[0054] During the rotation of the rotating part 101 and the hook body 102, the end of the pull rope first contacts the spring baffle and enters the limiting space through the spring baffle. During the process of the hook body 102 pulling the pull rope, the end of the pull rope moves along the inner wall of the hook claw 1201. When the outer bag of the ton bag 5 is broken, the end of the pull rope moves to the spring baffle and leaves the limiting space through the spring baffle, thus separating the pull rope from the hook body 102.

[0055] Example 3

[0056] This embodiment provides a powder feeding device. Based on embodiment 2, this embodiment further discloses the structure of the spring baffle.

[0057] In this embodiment, please refer to Figure 2 The spring baffle includes a first baffle 1202 and a second baffle 1203. The first end of the first baffle 1202 is rotatably connected to the end of the hook claw 1201 near the rotating member 101. The first end of the second baffle 1203 is rotatably connected to the free end of the hook claw 1201. A torsion spring 1204 is provided at the connection between the first baffle 1202 and the hook claw 1201. A torsion spring 1204 is also provided at the connection between the second baffle 1203 and the hook claw 1201. The second end of the second baffle 1203 is in contact with the second end of the first baffle 1202.

[0058] In this embodiment, when the second end of the first baffle 1202 contacts the second end of the second baffle 1203, the two sets of torsion springs 1204 are in a relaxed state, according to... Figure 2 In terms of orientation sequence, when the first baffle 1202 is pushed outward of the limiting space (i.e., when the second end of the first baffle 1202 swings counterclockwise), the elastic force of the torsion spring 1204 at the first baffle 1202 causes the second end of the first baffle 1202 to swing clockwise. When the second baffle 1203 is pushed inward of the limiting space (i.e., when the second end of the second baffle 1203 swings counterclockwise), the elastic force of the torsion spring 1204 at the second baffle 1203 causes the second end of the second baffle 1203 to swing counterclockwise.

[0059] With the configuration of this embodiment, when the hook 102 contacts the pull rope of the ton bag 5, the end of the pull rope will first contact the second baffle 1203 and push the second baffle 1203 counterclockwise. During this process, the end of the pull rope enters the limiting space, and then the second baffle 1203 is reset under the elastic force of the corresponding torsion spring 1204. During the process of the hook 102 pulling the pull rope, the end of the pull rope moves along the inner wall of the hook claw 1201. When the outer bag of the ton bag 5 is broken, the end of the pull rope contacts the first baffle 1202 and pushes the first baffle 1202 counterclockwise. During this process, the end of the pull rope exits the limiting space, and then the first baffle 1202 is reset under the elastic force of the corresponding torsion spring 1204.

[0060] Embodiment 4

[0061] The embodiment provides a powder feeding device, in addition to comprising the technical scheme in the foregoing embodiment, the structure of the powder feeding device is improved.

[0062] In the embodiment, the powder feeding device further comprises a clamping jaw 2, a transverse transfer element 3 and a longitudinal transfer element 4.

[0063] Please refer to Figure 1 The clamping jaw 2 can clamp and release the ton bag 5.

[0064] The transverse transfer element 3 is arranged above the bag opener 1, and the transverse transfer element 3 can drive the clamping jaw 2 to move along the first direction X.

[0065] The longitudinal transfer element 4 can drive the clamping jaw 2 to move along the second direction Y.

[0066] In the embodiment, during feeding, the transverse transfer element 3 drives the clamping jaw 2 to move along the first direction X to above the ton bag 5 storage place, the longitudinal transfer element 4 drives the clamping jaw 2 to move along the second direction Y to be close to the ton bag 5, after the clamping jaw 2 clamps the ton bag 5, the transverse transfer element 3 drives the clamping jaw 2 to move along the first direction X to above the bag opener 1, the longitudinal transfer element 4 drives the clamping jaw 2 to move along the second direction Y to adjust the distance between the clamping jaw 2 and the bag opener 1, then the bag opener 1 opens the ton bag 5 and feeds, after the feeding is completed, the transverse transfer element 3 drives the clamping jaw 2 to move along the first direction X to the empty place, the bag opener 1 releases the ton bag 5, and the ton bag 5 falls on the empty place, so that the feeding of the graphite negative electrode powder is completed.

[0067] Embodiment 5

[0068] The embodiment provides a powder feeding device, and on the basis of the embodiment 4, a first connecting mode of the transverse transfer element 3, the longitudinal transfer element 4 and the clamping jaw 2 is disclosed.

[0069] In the embodiment, please refer to Figure 4 The transverse transfer element 3 comprises a transverse rail 301 and a transverse push air cylinder 302, the clamping jaw 2 is slidably arranged on the transverse rail 301 along the first direction X, the transverse push air cylinder 302 is arranged on the transverse rail 301, the transverse push air cylinder 302 can drive the clamping jaw 2 to slide on the transverse rail 301, the longitudinal transfer element 4 comprises a longitudinal push air cylinder, the longitudinal push air cylinder can be mounted on a rack, and the piston rod of the longitudinal air cylinder faces the second direction Y and is connected with the clamping jaw 2, so that the transverse rail 301 moves along the second direction Y.

[0070] In the embodiment, when the transverse transfer element 3 drives the clamping jaw 2 to move along the first direction X, the longitudinal transfer element 4 does not move, and when the longitudinal transfer element 4 drives the clamping jaw 2 to move along the second direction Y, the transverse transfer element 3 moves along the second direction Y at the same time.

[0071] Embodiment 6

[0072] The embodiment provides a powder feeding device, and discloses a second connecting mode of the transverse transfer element 3, the longitudinal transfer element 4 and the clamping jaw 2.

[0073] In the embodiment, the constituent components of the transverse transfer element 3 and the longitudinal transfer element 4 are basically the same as those in Embodiment 5, and the difference from Embodiment 5 is that, referring to Figure 5 In the embodiment, the longitudinal push cylinder is arranged on the transverse rail 301 to slide in the first direction X, the transverse push cylinder 302 is arranged on the transverse rail 301, the transverse push cylinder 302 can drive the longitudinal transfer element 4 to slide on the transverse rail 301, and the clamping jaw 2 is arranged at one end of the longitudinal transfer element 4 close to the bag opener 1.

[0074] In the embodiment, the transverse rail 301 can be mounted on a rack.

[0075] In the embodiment, when the transverse transfer element 3 drives the clamping jaw 2 to move in the first direction X, the longitudinal transfer element 4 is simultaneously moved in the first direction X, and when the longitudinal transfer element 4 drives the clamping jaw 2 to move in the second direction Y, the longitudinal transfer element 4 is not moved.

[0076] Embodiment 7

[0077] The embodiment provides a powder feeding device, and discloses a structure of the clamping jaw 2 on the basis of Embodiment 4.

[0078] In the embodiment, referring to Figure 6 The clamping jaw 2 comprises a clamping seat 201, a plurality of swing claws 202 and a swing driving element 10, the plurality of swing claws 202 are distributed at intervals in the circumferential direction of the clamping seat 201, one end of each swing claw 202 is rotationally connected to the clamping seat 201, and the swing driving element 10 can simultaneously drive the swing claws 202 to swing upward or downward.

[0079] A plurality of clamping ears are arranged at the top of the ton bag 5, the number of the swing claws 202 is the same as that of the clamping ears in the embodiment, and four swing claws 202 are taken as an example in the embodiment.

[0080] In this embodiment, when loading, the clamping jaw 2 is transferred above the ton bag 5, and the swing driving member 10 swings the four swing claws 202 downward first, so that the clamping seat 201 and the four swing claws 202 can enter the space between the four clamping ears on the top of the ton bag 5, and the four swing claws 202 are opposite to the positions of the four clamping ears. At this time, the swing driving member 10 is started to drive the four swing claws 202 to swing upward. In this process, the four swing claws 202 will enter the four clamping ears at the same time. With the upward swinging of the four swing claws 202, the four swing claws 202 can hook up the four clamping ears upward, so as to clamp the ton bag 5. After the ton bag 5 is clamped, the transverse transfer member 3 and the longitudinal transfer member 4 cooperate to transfer the clamping jaw 2 and the ton bag 5 to the loading position.

[0081] Embodiment 8

[0082] This embodiment provides a powder loading device. On the basis of embodiment 7, a structure of the swing driving member 10 is disclosed.

[0083] In this embodiment, the swing driving member 10 comprises a plurality of transmission gears 203, a movable seat 204, and a driving cylinder 206.

[0084] In this embodiment, the number of transmission gears 203 is also taken as four as an example.

[0085] Please refer to Figure 6 Four installation grooves are circumferentially and spaced apart on the side wall of the clamping seat 201. The four transmission gears 203 are rotationally arranged in the four installation grooves respectively. The transmission gear 203 is an incomplete gear, so that one end of the swing claw 202 can be connected with the transmission gear 203, and the swing claw 202 can swing in the process of rotation of the transmission gear 203.

[0086] Please refer to Figure 7 A sliding groove is arranged in the middle of the clamping seat 201. The movable seat 204 is slidably connected in the sliding groove along the second direction Y. Connection grooves communicating with the installation grooves are arranged on the four side walls of the sliding groove. The four side walls of the movable seat 204 are provided with racks 205 along the second direction Y. Each rack 205 passes through a connection groove and is engaged with a transmission gear 203.

[0087] The driving cylinder 206 is arranged on the top of the clamping seat 201. The piston rod of the driving cylinder 206 is directed to the second direction Y and is connected with the movable seat 204, so as to drive the movable seat 204 to reciprocate along the second direction Y.

[0088] In this embodiment, in the process of driving the movable seat 204 to move along the second direction Y by the driving cylinder 206, the movable seat 204 drives the four transmission gears 203 to rotate through the four racks 205, so as to realize the upward or downward swinging of the four swing claws 202.

[0089] Embodiment 9

[0090] The embodiment provides a powder feeding device, and the structure of the powder feeding device is improved.

[0091] In the embodiment, the powder feeding device further comprises a material conveying device 6, please refer to Figure 1 The transverse transfer member 3 extends above the material conveying device 6 in the first direction X, and the material conveying device 6 can convey the ton bag 5 below the transverse transfer member 3.

[0092] In the embodiment, the material conveying device 6 can adopt a conveyor belt, and the transverse transfer member 3 extends above one end of the conveyor belt in the first direction X.

[0093] During feeding, the workers place multiple ton bags 5 on the conveyor belt in the same orientation, start the conveyor belt to sequentially transfer the ton bags 5 below the transverse transfer member 3, and then sequentially transfer the ton bags 5 to the feeding position through cooperation of the transverse transfer member 3, the longitudinal transfer member 4 and the clamping jaw 2, so that the ton bags 5 can be concentrated more labor-savingly, and the feeding efficiency of the graphite negative electrode powder is improved.

[0094] Embodiment 10

[0095] The embodiment provides a powder feeding device, and the structure of the powder feeding device is improved.

[0096] In the embodiment, the powder feeding device further comprises a recycling barrel 7, and the transverse transfer member 3 extends above the recycling barrel 7 in the first direction X.

[0097] In the embodiment, the recycling barrel 7 is an open-top container, please refer to Figure 1 The recycling barrel 7 is arranged on the side away from the ton bag 5 storage in the feeding position, after feeding is completed, the transverse transfer member 3 drives the clamping jaw 2 to above the recycling barrel 7, at this time, the clamping jaw 2 releases the ton bag 5, and the ton bag 5 can fall into the recycling barrel 7, so that the ton bag 5 can be collected.

[0098] The embodiments of the utility model are described above in combination with the drawings, the embodiments in the application and the features in the embodiments can be combined with each other in the case of no conflict, the application is not limited to the above-mentioned specific embodiments, the above-mentioned specific embodiments are only illustrative, rather than limiting, the ordinary skilled in the art can make many forms under the inspiration of the application without departing from the purpose of the application and the scope protected by the claims, and all the forms belong to the protection of the application.

Claims

1. A powder feeding device, characterized by The bag opener (1) comprises: a rotating member (101) capable of rotating around its middle part; a hook body (102) arranged at one end of the rotating member (101), capable of moving with the rotating member (101), and capable of hooking a pull rope at the bottom of a ton bag (5); a cutter body (103) arranged at the other end of the rotating member (101), capable of moving with the rotating member (101), and capable of cutting a metal film at the bottom of the ton bag (5).

2. The powder feeding device according to claim 1, characterized in that: The hook body (102) comprises a wire hooking claw (1201) and a spring baffle, the wire hooking claw (1201) and the spring baffle form a limiting space for limiting the end of the pull rope, and the spring baffle can open and close the limiting space.

3. The powder feeding device according to claim 2, characterized in that: The spring baffle comprises a first baffle (1202) and a second baffle (1203), the first end of the first baffle (1202) is rotationally connected to one end of the wire hooking claw (1201) close to the rotating member (101), the first end of the second baffle (1203) is rotationally connected to the free end of the wire hooking claw (1201), a torsion spring (1204) is arranged at the connection between the first baffle (1202) and the wire hooking claw (1201), a torsion spring (1204) is also arranged at the connection between the second baffle (1203) and the wire hooking claw (1201), and the second end of the second baffle (1203) is in contact with the second end of the first baffle (1202).

4. The powder feeding device according to claim 1, wherein: The powder feeding device further comprises: a clamping claw (2) capable of clamping and releasing the ton bag (5); a transverse transfer member (3) arranged above the bag opener (1), capable of driving the clamping claw (2) to move in a first direction (X); a longitudinal transfer member (4) capable of driving the clamping claw (2) to move in a second direction (Y).

5. The powder feeding device according to claim 4, characterized in that: The transverse transfer member (3) comprises a transverse rail (301) and a transverse pushing cylinder (302), the clamping claw (2) is slidably arranged on the transverse rail (301) in the first direction (X), the transverse pushing cylinder (302) is arranged on the transverse rail (301), the transverse pushing cylinder (302) can drive the clamping claw (2) to slide on the transverse rail (301), and the longitudinal transfer member (4) can drive the transverse rail (301) to move in the second direction (Y).

6. The powder feeding device according to claim 4, wherein: The transverse transfer member (3) comprises a transverse rail (301) and a transverse pushing cylinder (302), the longitudinal transfer member (4) is slidingly arranged on the transverse rail (301) in a first direction (X), the transverse pushing cylinder (302) is arranged on the transverse rail (301), and the transverse pushing cylinder (302) can drive the longitudinal transfer member (4) to slide on the transverse rail (301), and the clamping jaw (2) is arranged at one end of the longitudinal transfer member (4) close to the bag opener (1).

7. The powder feeding device according to claim 4, wherein: The clamping jaw (2) comprises a clamping seat (201), a plurality of swing jaws (202) and a swing driving member (10), the swing jaws (202) are distributed at intervals in a circumferential direction of the clamping seat (201), one end of each swing jaw (202) is rotationally connected with the clamping seat (201), and the swing driving member (10) can simultaneously drive the swing jaws (202) to swing upward or downward.

8. The powder feeding device according to claim 7, wherein The swing driving member (10) comprises: a plurality of transmission gears (203) rotationally arranged on the clamping seat (201), the number of the transmission gears (203) is the same as that of the swing jaws (202), one end of the swing jaw (202) is connected with the transmission gear (203); a movable seat (204) located between the transmission gears (203), a rack (205) is arranged on a side wall of the movable seat (204) in a second direction (Y), and each transmission gear (203) is in meshing connection with the rack (205); and a driving cylinder (206) arranged on the clamping seat (201), the driving cylinder (206) can drive the movable seat (204) to reciprocate in the second direction (Y).

9. The powder feeding device according to any one of claims 4-8, characterized in that: The powder feeding device further comprises a material conveying device (6), the transverse transfer member (3) extends above the material conveying device (6) in the first direction (X), and the material conveying device (6) can convey the ton bag (5) to below the transverse transfer member (3).

10. The powder feeding device according to any one of claims 4-8, characterized in that: The powder feeding device further comprises a recovery bucket (7), and the transverse transfer member (3) extends above the recovery bucket (7) in the first direction (X).

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