CN221138690U

CN221138690U - Powder filling device

Info

Publication number: CN221138690U
Application number: CN202322511811.5U
Authority: CN
Inventors: 祁亚东; 王海涛; 林静; 梁献华
Original assignee: Jiangsu Toms Intelligent Equipment Co ltd
Current assignee: Jiangsu Toms Intelligent Equipment Co ltd
Priority date: 2023-09-15
Filing date: 2023-09-15
Publication date: 2024-06-14
Anticipated expiration: 2033-09-15

Abstract

The utility model discloses a powder filling device, and belongs to the field of powder filling. Comprises a hopper component, a stirring component and a discharging component. The hopper assembly is adapted to contain a powdered material; the stirring assembly comprises a rotary driving device arranged above the hopper, and a stirring knife which is arranged in the hopper, is in transmission connection with the rotary driving device and is always spaced from the inner wall of the hopper by a preset gap; the discharging assembly comprises a discharging pipeline arranged at the bottom of the hopper, and a plug assembly which is arranged at the bottom of the discharging pipeline, can move up and down along the axis of the discharging pipeline and is suitable for controlling the opening of the discharging pipeline. According to the utility model, the stirring blades and the inner wall of the hopper are arranged at intervals with a preset gap, the screw discharging mechanism is omitted, and the opening degree of the discharging hole is adjusted through the plug assembly, so that contact friction between metal bodies in the filling process is avoided, and the safety risk existing in raw material filling in the lithium battery industry is effectively solved.

Description

Powder filling device

Technical Field

The utility model belongs to the field of powder filling, and particularly relates to a powder filling device.

Background

At present, the blanking of powder materials is mainly finished through a screw, an accurate screw piece distance is processed on the screw, under the control of a servo motor, materials are conveyed into a packaging container from a conical hopper through rotating speed and rotating quantity, however, the blanking can not be applied to lithium battery materials or special materials in other special industries, because the screw rotates at a high speed in a screw sleeve, the screw pieces of the screw are contacted with the inner wall of the screw sleeve, and the lithium battery materials are mixed to generate high-speed friction, because the friction can gather higher heat in a short time, the heat can bring unstable physical reflection, has higher safety risk, meanwhile, friction between the screw pieces and the inner wall of the screw sleeve can also generate metal chips, and the metal chips can be doped into the lithium battery raw materials along with material filling and are difficult to clean and select. Both of these conditions are totally unacceptable to lithium battery manufacturers and are not compliant with national and industry standards.

Through searching, it is found that the Chinese patent (publication No. CN 214776694U) discloses a bag filling device of a powder packaging machine, which comprises a machine base, wherein a hopper is fixed on the machine base, a discharging pipe is arranged at the lower end of the hopper, a feeding port for conveniently adding powder is arranged on the hopper, a discharging screw is rotationally arranged in the discharging pipe, a rotary power device for driving the discharging screw to rotate is arranged on the hopper, the lower end of the discharging pipe is a discharging port, and opening and closing mechanisms for opening or closing the discharging port of the discharging pipe are arranged on the discharging pipe and the hopper. The bag filling device is smoother in the process of filling and packaging powder, and is suitable for filling and packaging powder which is thinner or has certain viscosity. Obviously, the screw is adopted to complete discharging, and the technical problems still exist; and secondly, the opening and closing mechanism is driven by the air cylinder, so that the opening and closing of the discharge port can be realized, and the opening of the discharge port can not be accurately adjusted.

Disclosure of utility model

In order to overcome the technical defects, the utility model provides a powder filling device for solving the problems related to the background technology.

The utility model provides a powder filling device, comprising:

a hopper assembly adapted to contain a powdered material;

The stirring assembly comprises a rotary driving device arranged above the hopper assembly, and a stirring knife which is arranged in the hopper assembly, is in transmission connection with the rotary driving device and is always spaced from the inner wall of the hopper assembly by a preset gap;

The discharging assembly comprises a discharging pipeline arranged at the bottom of the hopper assembly, and a plug assembly which is arranged at the bottom of the discharging pipeline, can move up and down along the axial direction of the discharging pipeline and is suitable for controlling the opening of the discharging pipeline.

Preferably or alternatively, the plug assembly comprises: the top that sets up the hopper subassembly top still is provided with lift drive arrangement, sets up inside the hopper subassembly and extend to discharge tube bottom, with the connecting rod that lift drive arrangement is connected to and set up the toper end cap of connecting rod bottom.

Preferably or alternatively, the conical plug incorporates a resilient member such that the conical plug maintains a tendency to move towards the discharge conduit side.

Preferably or alternatively, the lifting drive means comprises: the fixed bolster, set up the servo motor of fixed bolster top, with servo motor is connected, the lead screw of vertical installation sets up deflector on the fixed bolster, vertical setting is installed on the fixed bolster, be located respectively the guiding axle of lead screw both sides, slidable mounting is in the lifter plate of lead screw and guiding axle support.

Preferably or alternatively, a photoelectric sensor is further arranged on the fixed support and is suitable for detecting the position of the lifting plate.

Preferably or alternatively, the rotary driving device is connected with the stirring knife through a transmission shaft seat.

Preferably or alternatively, the outside of the transmission shaft seat is rotatably mounted on the upper part of the hopper assembly through a bearing, and a through hole is formed in the inside of the transmission shaft seat to allow the connecting rod to pass through.

Preferably or alternatively, a tuning fork switch is also provided at the top of the hopper assembly, adapted to detect the depth of material within the hopper assembly.

Preferably or alternatively, a dust removal pipe is further arranged outside the discharging pipeline.

Preferably or alternatively, the hopper assembly and/or the discharge conduit are externally provided with vibrating means.

The utility model relates to a powder filling device, which has the following beneficial effects compared with the prior art: according to the utility model, the stirring blades and the inner wall of the hopper assembly are set to be spaced by a preset gap, the screw discharging mechanism is omitted, and the opening degree of the discharging hole is adjusted through the plug assembly, so that contact friction between metal bodies in the filling process is avoided, physical reaction and chemical reaction of raw material friction of the lithium battery are avoided, invasion of other metal components into the raw material of the lithium battery is effectively avoided, and the safety risk existing in raw material filling in the lithium battery industry is effectively solved.

Drawings

Fig. 1 is a schematic view of the structure of the filling device and its accessories in the present utility model.

Fig. 2 is a schematic structural view of the filling device according to the present utility model.

Fig. 3 is a schematic cross-sectional view of a filling device according to the utility model.

The reference numerals are: 1. a support; 2. a fixing seat; 3. a driving motor; 4. a transmission shaft seat; 5. a conical hopper; 6. a dust removal pipe; 7. a tuning fork switch; 8. a stirring knife; 9. a fixed bracket; 10. a servo motor; 11. a coupling; 12. a guide plate; 13. a guide shaft; 14. a screw rod; 15. a photoelectric sensor; 16. a lifting plate; 17. a connecting rod; 18. a cover plate; 19. a limit ring; 20. a conical plug; 21. a discharge pipe; 22. a pressure spring; 23. and a vibration device.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present utility model. It will be apparent, however, to one skilled in the art that the utility model may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the utility model.

Referring to fig. 1 to 3, a powder filling device includes: support 1, hopper subassembly, stirring subassembly and ejection of compact subassembly.

Wherein the hopper assembly is fixedly mounted on the support 1, the hopper assembly comprises a conical hopper 5 and a cover plate 18 positioned on the conical hopper 5, the conical hopper 5 and the cover plate 18 form a closed space suitable for containing powdery materials, wherein the powdery materials mainly refer to lithium battery raw materials, and the materials have relatively high self-fluidity. The stirring assembly comprises a rotary driving device arranged above the hopper assembly, a transmission shaft seat 4 arranged at the top of the stirring assembly and rotatably installed on the cover plate 18 through a bearing, and a stirring knife 8 arranged in the hopper assembly, connected with the transmission shaft seat 4 and always spaced from the inner wall of the hopper assembly by a preset gap. The rotary driving device is a driving motor 3, the driving motor 3 is arranged on the fixing seat 2, and the fixing seat 2 is arranged above the bracket.

The stirring blade 8 and the inner wall of the tapered hopper 5 are separated by a predetermined gap, contact friction between the stirring blade 8 and the inner wall of the tapered hopper 5 is avoided, and physical reaction and chemical reaction of lithium battery raw materials due to friction or invasion of other metal components due to friction are avoided, so that physical and chemical stability of the whole lithium battery material is influenced.

The discharging assembly comprises a discharging pipeline 21 arranged at the bottom of the conical hopper 5, and a plug assembly which is arranged at the bottom of the discharging pipeline 21, can move up and down along the axial direction of the discharging pipeline 21 and is suitable for controlling the opening degree of the discharging pipeline 21. The plug assembly includes: the top of setting in the hopper subassembly top still is provided with lift drive, sets up the hopper subassembly is inside and extend to discharge tube 21 bottom, with lift drive's connecting rod 17 that is connected to and set up the toper end cap 20 of connecting rod 17 bottom. The inside of the transmission shaft seat 4 is provided with a through hole, the connecting rod 17 is allowed to pass through, the lifting driving device drives the connecting rod 17 to move up and down, and then drives the conical plug 20 to move up and down, and the discharging gap between the conical plug 20 and the discharging pipeline 21 is adjusted, so that the discharging speed is adjusted.

In addition, an elastic member, which in the embodiment is a disc spring, is built in the conical plug 20, so that the conical plug 20 keeps a tendency to move toward the discharge pipe 21 side. Particularly, in the stop state, the conical plug 20 is pressed on the blanking port by self pressure and cannot loosen, so that the tightness of the discharging pipeline 21 is ensured. Meanwhile, a limiting ring 19 is arranged in the discharging pipeline 21, the limiting ring 19 is of a concentric structure, and on one hand, the connecting rod 17 passes through the center position of the limiting ring 19 to realize coaxial fixation of the fixed connecting rod 17; on the other hand, the position of the conical plug 20 can be restricted, ensuring a rigid collision between the conical plug 20 and the discharge pipe 21.

In a further embodiment, the lifting driving device has various options, and in this embodiment, the lifting driving device is a screw 14 module driven by the servo motor 10. The lift driving device includes: the fixed bolster 9, set up servo motor 10 and shaft coupling 11 in fixed bolster 9 top, with the lead screw 14 that the shaft coupling 11 is connected, vertical installation, set up deflector 12 on the fixed bolster 9, vertical setting is installed on the fixed bolster 9, be located respectively lead screw 14 both sides guiding axle 13, slidable mounting is in the lifter plate 16 of lead screw 14 and guiding axle 13 support. At the initial stage of filling the bag, the discharge gap can be adjusted to the maximum state, and when the bag filling reaches the middle and later stages, the discharge gap is reduced, so that the accurate discharge of the weight of the package is controlled. In addition, in order to obtain the size of the discharge gap between the conical plug 20 and the discharge pipe 21 more precisely, the fixed bracket 9 is further provided with a photoelectric sensor 15, and the discharge gap, that is, the discharge speed, is obtained by detecting the position of the lifting plate 16.

In a further embodiment, the top of the hopper assembly is further provided with a tuning fork switch 7 adapted to detect the depth of the material in the hopper assembly. When the packing machine works, materials flow into the hopper from the feed inlet of the conical hopper 5, when the material level of the materials contacts the tuning fork switch 7, the tuning fork switch 7 detects that the materials reach a designated material position, signals are sent to a feeding system of host equipment, the materials are stopped to be conveyed, and at the moment, the materials in the conical hopper 5 have general fluidity, and the stirring knife 8 is required to slowly stir the materials around the central shaft.

In a further embodiment, the hopper and/or the discharge conduit 21 is provided externally with a vibrating device 23. By enabling the hopper and/or the discharge pipeline 21 to vibrate slightly, auxiliary discharge is realized, and the problem of material blockage is avoided.

In a further embodiment, the discharge pipe 21 is also provided with a dust removal pipe 6 on the outside. In the blanking process, dust formed by the materials is pumped out through the dust removing pipe 6, so that the dust is prevented from polluting the production environment,

In order to facilitate understanding of the technical scheme of the powder filling device, a brief description is made on the working principle: when the packing machine works, materials flow into the conical hopper 5 from the feed inlet of the conical hopper 5, when the material level of the materials contacts the tuning fork switch 7, the tuning fork switch 7 detects that the materials reach a specified material position, signals are sent to a feeding system of host equipment, the materials are stopped to be conveyed, and the materials in the conical hopper 5 are generally in fluidity, and slowly stir the materials around a central shaft through the stirring blade 8. Before the material flows into the packaging container below the host device through the discharging pipeline 21, the servo motor 10 drives the lifting plate 16 to drive the conical plug 20 at the lower end of the connecting rod 17 to descend to a preset gap between the conical plug 20 and the discharging pipeline 21, and at the moment, the material flows into the packaging container in the self-flowability mode, and the flow is not blocked. When the total weight of the materials approaches to about half of the set total weight, the system sends out a command, and the servo motor 10 drives the lifting plate 16 to drive the conical plug 20 at the lower end of the connecting rod 17 to rise; but not completely block the discharging opening, the conical plug 20 has a conical shape, the discharging space of the pipe opening is reduced, the flow of the material is limited, the flow speed and the flow quantity of the material are reduced, at the moment, the weighing system on the host equipment feeds back the total weight of the material in real time, and the slow flow speed of the material ensures that the weighing accuracy is within the control range; when the total weight of the materials continuously changes and approaches to a set value, the host weighing system sends out a command in real time, the servo motor 10 drives the lifting plate 16 to drive the conical plug 20 at the lower end of the connecting rod 17 to ascend, the conical plug 20 further limits the flow of the materials in a conical shape, the discharging space of the pipe orifice is further reduced, the flow of the materials is further blocked, the flow speed is reduced, and the flow quantity of the materials is further slowed down; along with real-time feedback of a weighing instrument of a weighing mechanism in the packaging machine, the total weight of materials changes in real time until the materials are filled into a packaging container and reach a set value, a servo motor 10 drives a lifting plate 16 to drive a conical plug 20 at the lower end of a connecting rod 17 to rise to a fully blocked blanking opening, and a pressure spring 22 in the conical plug 20 is tightly pressed at the blanking opening by self pressure so as not to loosen.

The dust formed by the materials in the filling process can be pumped away from the dust removing pipe 6, so that the production environment is prevented from being polluted by dust, the driving quantity of the driving motor 3 is timely changed and adjusted along with the real-time data fed back by weighing, and is changed at any time, so that the dosage precision of the filled materials is packaged under the requirement of capacity, the discharging process is also prevented from generating high-speed friction with other part devices of the discharging device of the packaging machine, and the phenomenon that metal scraps invade into the materials is avoided.

In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations of the utility model are not described in detail in order to avoid unnecessary repetition.

Claims

1. A powder filling device, comprising:

a hopper assembly adapted to contain a powdered material;

The stirring assembly comprises a rotary driving device arranged above the hopper assembly, and a stirring knife (8) which is arranged in the hopper assembly, is in transmission connection with the rotary driving device and is always spaced from the inner wall of the hopper assembly by a preset gap;

the discharging assembly comprises a discharging pipeline (21) arranged at the bottom of the hopper assembly, and a plug assembly which is arranged at the bottom of the discharging pipeline (21), can move up and down along the axial direction of the discharging pipeline (21) and is suitable for controlling the opening degree of the discharging pipeline (21).

2. The powder filling device of claim 1, wherein the plug assembly comprises: the top that sets up the hopper subassembly top still is provided with lift drive arrangement, sets up inside the hopper subassembly and extend to discharge tube (21) bottom, with connecting rod (17) that lift drive arrangement is connected to and set up conical plug (20) of connecting rod (17) bottom.

3. Powder filling apparatus according to claim 2, wherein the conical plug (20) has an elastic element built-in such that the conical plug (20) maintains a tendency to move towards the discharge conduit (21) side.

4. The powder filling device according to claim 2, wherein the elevation driving means includes: the fixed bolster (9), set up servo motor (10) of fixed bolster (9) top, with servo motor (10) are connected, lead screw (14) of vertical installation, set up deflector (12) on the fixed bolster (9), vertical setting is installed on the fixed bolster (9), be located respectively guide shaft (13) of lead screw (14) both sides, slidable mounting is in lifter plate (16) of lead screw (14) and guide shaft (13) support.

5. Powder filling device according to claim 4, characterized in that the fixed support (9) is further provided with a photoelectric sensor (15) adapted to detect the position of the lifting plate (16).

6. Powder filling device according to claim 2, characterized in that the rotary drive means and the stirring blade (8) are connected by means of a drive shaft seat (4).

7. Powder filling device according to claim 6, characterized in that the outside of the drive shaft seat (4) is rotatably mounted on the upper part of the hopper assembly by means of a bearing, the inside of the drive shaft seat (4) being provided with a through hole allowing the connecting rod (17) to pass through.

8. Powder filling apparatus according to claim 1, wherein the hopper assembly top is further provided with a tuning fork switch (7) adapted to detect the depth of the material in the hopper assembly.

9. Powder filling device according to claim 1, characterized in that the exterior of the discharge duct (21) is further provided with a dust removal tube (6).

10. Powder filling device according to claim 1, characterized in that the hopper assembly and/or the discharge conduit (21) are provided externally with vibration means (23).