Powder conveying device

Abstract

The utility model discloses a powder conveying device which comprises the following components: a feeding mechanism which comprises a powder cabin and a stirring paddle which is rotatably arranged in the powder cabin; the discharging mechanism comprises a screw tube and a screw rod assembly, the screw rod assembly is arranged in the screw tube, and the powder bin is communicated with the screw tube; the driving mechanism comprises a motor, a first transmission gear and an output gear, the motor drives the output gear to rotate through the first transmission gear, and the output gear simultaneously drives the stirring paddle and the screw assembly to move. The motor drives the stirring paddle and the screw assembly to move at the same time, the stirring paddle stirs powder in the powder bin, the powder is thrown into the screw tube, the screw assembly sends the powder out of the screw tube, the structure is simple and stable, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of material conveying, in particular to a powder conveying device. Background Art

[0002] Most of the existing powder conveying devices use a separate motor with a gear or connecting rod mechanism to open and close the powder outlet, and use another motor to realize the transmission of powder. The mechanism is cumbersome and complicated, the cost is high, and the stability is poor. At the same time, most powder discharge mechanisms use powder discharge grids to discharge powder intermittently. The powder output is limited by the size and number of the grids and cannot be accurately controlled. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a powder conveying device with a simple and stable structure and reduced cost.

[0004] According to the first aspect of the present invention, the powder conveying device includes: a feeding mechanism, including a powder bin and a stirring paddle, and the stirring paddle is rotatably arranged in the powder bin; a discharging mechanism, including a spiral tube and a screw assembly, the screw assembly is arranged in the spiral tube, and the powder bin is connected to the spiral tube; a driving mechanism, including a motor, a first transmission gear and an output gear, the motor drives the output gear to rotate through the first transmission gear, and the output gear simultaneously drives the stirring paddle and the screw assembly to move.

[0005] The powder conveying device according to the embodiment of the utility model has at least the following beneficial effects: the motor drives the stirring paddle and the screw assembly to move at the same time, so that the stirring paddle stirs the powder in the powder bin and the powder falls into the spiral tube, and the screw assembly sends the powder out of the spiral tube. The structure is simple and stable, and the production cost is reduced.

[0006] According to some embodiments of the present invention, the powder conveying device also includes a control mechanism, which includes a control device and a control component, the control device is electrically connected to the control component and the motor respectively, and the control device cooperates with the control component to adjust the motor speed.

[0007] According to some embodiments of the utility model, the control component includes a Hall sensor and a plurality of magnets, the plurality of magnets are all arranged on the first transmission gear, the plurality of magnets are arranged at equal intervals along the circumferential direction, and the Hall sensor is used to sense the magnets.

[0008] According to some embodiments of the present utility model, the output gear includes a first tooth portion and a second tooth portion, the first tooth portion drives the stirring paddle to rotate, and the second tooth portion drives the screw assembly to move.

[0009] According to some embodiments of the utility model, a transmission tube is rotatably provided at the lower end of the powder bin, the transmission tube is connected to the screw, a third tooth portion meshing with the first tooth portion is provided on the outer side of the transmission tube, and the transmission tube is clamped with the stirring paddle.

[0010] According to some embodiments of the utility model, the stirring paddle includes a first connecting block and a plurality of stirring blocks, the plurality of stirring blocks are circumferentially arranged on the first connecting block, the plurality of stirring blocks are spaced apart, and the first connecting block is clamped with the transmission pipe.

[0011] According to some embodiments of the present invention, a reinforcing block is connected between two adjacent stirring blocks.

[0012] According to some embodiments of the utility model, the first connecting block is hollow and square in shape as a whole, the transmission tube is provided with a second connecting block, the second connecting block is provided with a plug hole matching the first connecting block, and the first connecting block is plugged into and matched with the plug hole.

[0013] According to some embodiments of the utility model, the screw assembly includes a connecting shaft and a screw, one end of the screw is sleeved with the connecting shaft, and the other end of the screw is provided with an end cover, and the output gear drives the screw to move through the connecting shaft so that the end cover opens or closes the discharge port of the spiral tube.

[0014] According to some embodiments of the utility model, the screw rod is radially provided with a guide column, the side wall of the connecting shaft is provided with a guide hole matching the guide column, the guide column is plug-fitted with the guide hole, and the guide hole extends axially spirally along the connecting shaft.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 A schematic diagram of a powder conveying device according to an embodiment of the present utility model;

[0018] Figure 2 A cross-sectional view of a powder conveying device according to an embodiment of the present utility model;

[0019] Figure 3 A schematic diagram of a stirring paddle in a powder conveying device according to an embodiment of the utility model;

[0020] Figure 4 This is a schematic diagram of the cooperation between the connecting shaft and the screw in the powder conveying device according to an embodiment of the utility model.

[0021] Description of reference numerals:

[0022] Powder bin 110, stirring paddle 120, stirring block 121, reinforcing block 122, first connecting block 123, transmission tube 130, third tooth portion 131, second connecting block 132;

[0023] Driving mechanism 200, motor 210, transmission gear 220, output gear 230, first gear portion 231, second gear portion 232;

[0024] The discharging mechanism 300, the connecting shaft 310, the guide hole 311, the screw rod 320, the guide column 321, the screw tube 330, and the end cover 340;

[0025] Hall sensor 410 and magnet 420 . DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0030] Reference Figure 1 and Figure 2 The powder conveying device of the first embodiment of the utility model includes: a feeding mechanism, including a powder bin 110 and a stirring paddle 120, and the stirring paddle 120 is rotatably arranged in the powder bin 110; a discharging mechanism 300, including a spiral tube 330 and a screw assembly, the screw assembly is arranged in the spiral tube 330, and the powder bin 110 is connected to the spiral tube 330; a driving mechanism 200, including a motor 210, a first transmission gear 220 and an output gear 230, the motor 210 drives the output gear 230 to rotate through the first transmission gear 220, and the output gear 230 simultaneously drives the stirring paddle 120 and the screw assembly to move.

[0031] The motor 210 drives the output gear 230 to rotate through the first transmission gear 220, and the output gear 230 simultaneously drives the stirring paddle 120 and the screw assembly to move, so that the stirring paddle 120 stirs the powder in the powder bin 110 and causes the powder to fall into the screw tube 330. At the same time, the screw assembly starts to send the powder out of the screw tube 330, thereby simplifying the transmission structure, reducing production costs, and having a simple and stable structure.

[0032] It is understandable that, referring to Figure 1 and Figure 2 The powder conveying device also includes a control mechanism, which includes a control device and a control component. The control device is electrically connected to the control component and the motor 210 respectively, and the control device cooperates with the control component to adjust the speed of the motor 210. The speed of the motor 210 is adjusted by cooperating with the control device and the control component, thereby realizing the powder delivery amount control of the screw assembly.

[0033] Specifically, refer to Figure 1 and Figure 2 The control component includes a Hall sensor 410 and a plurality of magnets 420. The plurality of magnets 420 are all arranged on the first transmission gear 220. The plurality of magnets 420 are arranged at equal intervals along the circumferential direction. The Hall sensor 410 is used to sense the magnets 420. When the transmission gear 220 rotates, when the magnet 420 passes through the Hall sensor 410, the Hall sensor 410 reads a pulse, thereby knowing the number of turns and angle of rotation of the transmission gear 220, so as to control the speed of the motor 210 through the control device, so as to realize the powder delivery amount according to the user's needs and improve the accuracy of the powder delivery amount.

[0034] It is understandable that, referring to Figure 1 and Figure 2 The output gear 230 includes a first tooth portion 231 and a second tooth portion 232. The first tooth portion 231 drives the stirring paddle 120 to rotate, and the second tooth portion 232 drives the screw assembly to move. The first tooth portion 231 and the second tooth portion 232 on the output gear 230 are respectively driven by the stirring paddle 120 and the screw assembly, so that the screw assembly and the stirring paddle 120 move synchronously.

[0035] It is understandable that, referring to Figure 1 and Figure 2 The lower end of the powder bin 110 is rotatably provided with a transmission tube 130, which is in communication with the screw 320. A third tooth portion 131 meshing with the first tooth portion 231 is provided on the outer side of the transmission tube 130, and the transmission tube 130 is engaged with the stirring paddle 120. The stirring paddle 120 is engaged with the transmission tube 130, so that when the output gear 230 rotates, the first tooth portion 231 meshes with the third tooth portion 131, so that the transmission tube 130 is driven to rotate, thereby driving the stirring paddle 120 to rotate. The transmission tube 130 is hollow, and the powder in the powder bin 110 flows into the screw tube 330 through the transmission tube 130.

[0036] It is understandable that, referring to Figure 1 and Figure 3 The stirring paddle 120 includes a first connection block 123 and a plurality of stirring blocks 121. The plurality of stirring blocks 121 are arranged circumferentially on the first connection block 123. The plurality of stirring blocks 121 are arranged at intervals. The first connection block 123 is engaged with the transmission tube 130. When the stirring paddle 120 rotates, the stirring blocks 121 stir the powder in the powder bin 110, so that the powder enters the transmission tube 130 from the gaps between the stirring blocks 121, and is sent to the spiral tube 330 through the transmission tube 130, so as to prevent the powder from agglomerating in the powder bin 110.

[0037] It is understandable that, referring to Figure 3 A reinforcing block 122 is connected between two adjacent stirring blocks 121 to strengthen the structural strength of the stirring block 121 and increase the service life of the stirring paddle 120 .

[0038] It is understandable that, referring to Figure 1 and Figure 3 The first connection block 123 is hollow and square in shape. The transmission tube 130 is provided with a second connection block 132. The second connection block 132 is provided with a plug hole matching the first connection block 123. The first connection block 123 is plugged in with the plug hole. The first connection block 123 is square in shape and the plug hole matches the first connection block 123. When the first connection block 123 is plugged in with the plug hole, when the transmission tube 130 drives the stirring paddle 120 to rotate, the resistance between the first connection block 123 and the second connection block 132 is increased, and the risk of the first connection block 123 slipping in the plug hole is reduced. At the same time, an elastic buckle can be provided on the first connection block 123, so that after the first connection block 123 is inserted into the plug hole, the buckle is buckled with the second connection block 132, so that the first connection block 123 and the second connection block 132 are firmly combined.

[0039] It is understandable that, referring to Figure 2 and Figure 4The screw assembly includes a connecting shaft 310 and a screw 320, one end of the screw 320 is sleeved with the connecting shaft 310, and the other end of the screw 320 is provided with an end cover 340. The output gear 230 drives the screw 320 to move through the connecting shaft 310, so that the end cover 340 opens or closes the discharge port of the screw tube 330. The output gear 230 drives the connecting shaft 310 to rotate, and the connecting shaft 310 drives the screw 320 to move, driving the screw 320 to rotate and move along the axial direction of the screw tube 330, driving the end cover 340 to open the discharge port of the screw tube 330, and the screw 320 sends out the powder. Or the screw 320 drives the end cover 340 to close the discharge port of the screw tube 330 to prevent the powder from spilling. It should be noted that the second tooth portion 232 is a helical tooth, and the output gear 230 and the connecting shaft 310 are driven by a helical gear.

[0040] Specifically, refer to Figure 2 and Figure 4 The screw rod 320 is provided with a guide post 321 in the radial direction, and the side wall of the connecting shaft 310 is provided with a guide hole 311 matching with the guide post 321 . The guide post 321 is plug-fitted with the guide hole 311 , and the guide hole 311 extends in an axial spiral direction along the connecting shaft 310 . When the output gear 230 rotates, the connecting shaft 310 is driven to rotate. Since the spiral tube 330 is full of powder, the rotation of the screw 320 is hindered. At this time, the guide column 321 moves along the guide hole 311, causing the screw 320 to move along the axial direction of the spiral tube 330, so that the end cover 340 opens the discharge port of the spiral tube 330, and then the guide column 321 abuts against the side wall of the guide hole 311, driving the screw 320 to transport the powder. After the powder transportation is completed, the connecting shaft 310 rotates in the opposite direction, so that the guide column 321 drives the screw 320 to be recovered into the spiral tube 330, and the end cover 340 closes the discharge port of the spiral tube 330, thereby realizing the opening and closing of the spiral tube 330.

[0041] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A powder conveying device, characterized in that: include: The feeding mechanism comprises a powder bin and a stirring paddle, wherein the stirring paddle is rotatably arranged in the powder bin; The discharging mechanism comprises a spiral tube and a screw assembly, wherein the screw assembly is arranged in the spiral tube, and the powder bin is connected to the spiral tube; A driving mechanism, comprising a motor, a first transmission gear and an output gear, wherein the motor drives the output gear to rotate through the first transmission gear, and the output gear simultaneously drives the stirring paddle and the screw assembly to move; A control mechanism, wherein the control mechanism comprises a control device and a control component, wherein the control device is electrically connected to the control component and the motor respectively, and the control device cooperates with the control component to adjust the motor speed; The control component includes a Hall sensor and a plurality of magnets. The plurality of magnets are all arranged on the first transmission gear. The plurality of magnets are arranged at equal intervals along the circumferential direction. The Hall sensor is used to sense the magnets.

2. The powder conveying device according to claim 1, characterized in that: The output gear includes a first tooth portion and a second tooth portion, the first tooth portion drives the stirring paddle to rotate, and the second tooth portion drives the screw assembly to move.

3. The powder conveying device according to claim 2, characterized in that: A transmission pipe is rotatably arranged at the lower end of the powder bin, the transmission pipe is communicated with the screw, a third tooth portion meshing with the first tooth portion is arranged on the outer side of the transmission pipe, and the transmission pipe is clamped with the stirring paddle.

4. The powder conveying device according to claim 3, characterized in that: The stirring paddle includes a first connecting block and a plurality of stirring blocks, wherein the plurality of stirring blocks are circumferentially arranged on the first connecting block, the plurality of stirring blocks are spaced apart, and the first connecting block is clamped with the transmission pipe.

5. The powder conveying device according to claim 4, characterized in that: A reinforcing block is connected between two adjacent stirring blocks.

6. The powder conveying device according to claim 4, characterized in that: The first connection block is hollow and square in shape. The transmission tube is provided with a second connection block. The second connection block is provided with a plug hole matching the first connection block. The first connection block is plugged into the plug hole.

7. The powder conveying device according to claim 1, characterized in that: The screw assembly includes a connecting shaft and a screw, one end of the screw is sleeved with the connecting shaft, and the other end of the screw is provided with an end cover, and the output gear drives the screw to move through the connecting shaft so that the end cover opens or closes the discharge port of the spiral tube.

8. The powder conveying device according to claim 7, characterized in that: The screw rod is provided with guide pillars in the radial direction, the side wall of the connecting shaft is provided with guide holes matching with the guide pillars, the guide pillars are plug-fitted with the guide holes, and the guide holes extend in an axial spiral along the connecting shaft.

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