Powder feeding device

Abstract

The utility model provides a powder feeding device, and relates to the technical field of powder material conveying. The powder feeding device can comprise a powder storage hopper, a powder filling sliding block, a powder feeding pipe and a pressurizing device. Wherein the powder storage hopper is provided with an accommodating space for storing powder; the powder feeding pipe is connected between the bottom of the powder storage hopper and the powder filling sliding block so that powder in the powder storage hopper can be conveyed to the powder filling sliding block. The pressurizing device is arranged in the containing space of the powder storage hopper and / or the powder feeding pipe so as to pressurize the powder storage hopper and / or the powder feeding pipe, and then the speed of the powder entering the powder filling sliding block is increased. The speed and uniformity of powder entering the powder filling sliding block are increased through the pressurizing device, the filling speed and uniformity of the powder in the mold can be increased, and then the speed and quality of products produced by the mold are improved.

Description

Technical Field

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

[0002] In the process of preparing inductors, the powdered magnetic powder raw materials need to be transported to a cold press for pressing. In the existing powder conveying device, the powder is transported from the powder feeding hopper through the powder feeding tube to the powder filling slider only by its own weight, and then the powder is continuously delivered to the mold for pressing by the sliding of the powder filling slider. In the actual working process, the fine powder in the powder feeding hopper has low fluidity, the adsorption force between the powders is large, and the uneven filling amount of the coarse powder leads to uneven pressure, which affects the speed and uniformity of the powder entering the powder filling slider, resulting in poor uniformity of the prepared product. Utility Model Content

[0003] An object of the first aspect of the utility model is to provide a powder feeding device to solve the problem that the existing powder feeding devices have slow and uneven powder feeding speeds.

[0004] In particular, the utility model provides a powder feeding device, comprising:

[0005] A powder storage hopper having a containing space for storing powder;

[0006] Powder filling slider;

[0007] a powder delivery pipe connected between the bottom of the powder storage hopper and the powder filling slider to deliver the powder in the powder storage hopper to the powder filling slider; and

[0008] A pressurizing device is arranged at the accommodating space of the powder storage hopper and / or at the powder feeding pipe to pressurize the powder storage hopper and / or the powder feeding pipe, thereby increasing the speed at which the powder enters the powder filling slider.

[0009] Optionally, the accommodating space of the powder storage hopper includes a first space with a constant cross-sectional size; a cover plate detachably arranged with the powder storage hopper is arranged on one side of the first space; and a movable plate is also arranged in the first space;

[0010] The pressurizing device comprises an expansion and contraction device with a variable volume, and the expansion and contraction device is arranged between the cover plate and the movable plate, so as to push the movable plate to move by the expansion and contraction of the expansion and contraction device.

[0011] Optionally, at least one guide groove extending along the moving direction of the movable plate is provided at the inner side wall of the powder storage hopper forming the first space;

[0012] The outer periphery of the movable plate is provided with a convex block matched with the guide groove, and the movable plate moves along the guide groove through the cooperation between the convex block and the guide groove.

[0013] Optionally, a handle or a pull strap is provided on a side of the movable plate facing the cover plate.

[0014] Optionally, the pressurizing device further includes a first pressurizing tube and a first pressurizer, one end of the first pressurizing tube is connected to the first pressurizer, and the other end of the first pressurizing tube is connected to the expansion and contraction device to provide the expansion and contraction device with fluid for expanding the expansion and contraction device.

[0015] Optionally, a through hole is provided at the cover plate for the first pressurized pipe to pass through.

[0016] Optionally, the accommodating space of the powder storage hopper further includes a second space whose cross section gradually decreases from close to the first space to far away from the first space, and the second space is located below the first space and communicates with the first space;

[0017] The side structure of the moving plate close to the second space is configured to match the structure of the second space.

[0018] Optionally, a transition pipe is further included, which is arranged between the powder delivery pipe and the powder storage hopper; a switch is arranged at the transition pipe, and the switch is used to open or close the powder in the powder storage hopper to enter the powder delivery pipe.

[0019] Optionally, the pressurizing device includes a second pressurizing pipe and a second pressurizer; one end of the second pressurizing pipe is arranged at the second pressurizer, and the other end is connected to the powder delivery pipe to pressurize the powder in the powder delivery pipe.

[0020] Optionally, the pressurizing device includes a second pressurizing pipe and a second pressurizer; one end of the second pressurizing pipe is arranged at the second pressurizer, and the other end is connected to the transition pipe to pressurize the powder in the powder delivery pipe, and the connection between the second pressurizing pipe and the transition pipe is located between the switch and the powder delivery pipe.

[0021] The powder feeding device of the present scheme can be through a powder storage hopper, a powder filling slider, a powder feeding pipe and a pressurizing device, wherein the pressurizing device is arranged at the accommodating space of the powder storage hopper and / or at the powder feeding pipe to pressurize the powder storage hopper and / or the powder feeding pipe, thereby increasing the speed and uniformity of the powder entering the powder filling slider, which can increase the filling speed and uniformity of the powder in the mold, thereby improving the speed and quality of the products produced by the mold.

[0022] Based on the detailed description of the specific embodiments of the present invention in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other purposes, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0024] Figure 1 is a schematic structural diagram of a powder feeding device according to a specific embodiment of the utility model;

[0025] Figure 2 is a schematic perspective view of a powder feeding device according to a specific embodiment of the utility model;

[0026] Figure 3 It is a schematic three-dimensional diagram of a powder storage hopper of a powder feeding device according to a specific embodiment of the utility model;

[0027] Figure 4 It is a front view of a moving plate of a powder feeding device according to a specific embodiment of the utility model;

[0028] Figure 5 is a schematic structural diagram of a powder feeding device according to another specific embodiment of the utility model;

[0029] Figure 6 It is a schematic perspective view of a powder feeding device according to another specific embodiment of the utility model.

[0030] Description of reference numerals:

[0031] 100-powder feeding device; 110-powder storage hopper; 111-accommodating space; 112-first space; 113-cover plate; 114-movable plate; 115-guide groove; 116-bump; 117-handle; 118-through hole; 119-second space; 120-powder filling slider; 130-powder feeding pipe; 131-transition pipe; 132-switch; 140-pressurizing device; 141-expansion and contraction device; 142-first pressurizing pipe; 143-first pressurizer; 144-second pressurizing pipe; 145-second pressurizer. DETAILED DESCRIPTION

[0032] In the description of this embodiment, it should be understood that the terms "length", "width", "height", "up", "down", "left", "right", "vertical", "horizontal", "bottom", "inside" and "outside" etc. indicating orientation or positional relationships are based on the orientation 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 should not be understood as a limitation on the present invention.

[0033] As a specific embodiment of the present invention, Figure 1-Figure 6 As shown, this embodiment provides a powder feeding device 100, which is mainly used for conveying powder materials in a cold press. Specifically, the powder feeding device 100 may include a powder storage hopper 110, a powder filling slider 120, a powder feeding pipe 130 and a pressurizing device 140. Among them, the powder storage hopper 110 has a containing space 111 to store powder. The powder filling slider 120 is mainly arranged above the cold press mold, and the powder is conveyed into the mold by continuous sliding. The powder feeding pipe 130 is connected between the bottom of the powder storage hopper 110 and the powder filling slider 120 to convey the powder in the powder storage hopper 110 to the powder filling slider 120. The pressurizing device 140 is arranged at the containing space 111 of the powder storage hopper 110 and / or at the powder feeding pipe 130, so as to pressurize the powder storage hopper 110 and / or the powder feeding pipe 130, thereby increasing the speed at which the powder enters the powder filling slider 120.

[0034] Specifically, the powder feeding device 100 of this embodiment can be through a powder storage hopper 110, a powder filling slider 120, a powder feeding pipe 130 and a pressurizing device 140, wherein the pressurizing device 140 is arranged at the accommodating space 111 of the powder storage hopper 110 and / or at the powder feeding pipe 130 to pressurize the powder storage hopper 110 and / or the powder feeding pipe 130, thereby increasing the speed and uniformity of the powder entering the powder filling slider 120, which can increase the filling speed and uniformity of the powder in the mold, thereby improving the speed and quality of the products produced by the mold.

[0035] As a specific embodiment of the present invention, Figure 1-Figure 2 As shown, the accommodating space 111 of the powder storage hopper 110 of this embodiment may include a first space 112 with a constant cross-sectional size. A cover plate 113 is provided on one side of the first space 112 and is detachably provided with the powder storage hopper 110. A movable moving plate 114 is also provided in the first space 112. The pressurizing device 140 may include a volume-variable expansion and contraction device 141, which is provided between the cover plate 113 and the moving plate 114, so as to push the moving plate 114 to move by the expansion of the expansion and contraction device 141.

[0036] Specifically, a cover plate 113 may be provided at the open end of the powder storage hopper 110 of the present embodiment, and the cover plate 113 may be detachably connected to the powder storage hopper 110, and of course, may also be rotatably connected to the powder storage hopper 110. After the cover is set at the powder storage hopper 110, it may be fixed to the powder storage hopper 110 by a snap-on structure, a locking mechanism or a fastening structure. The opening of the powder storage hopper 110 of the present embodiment may be at the top. The cross-sectional dimensions of the first space 112 refer to the dimensions of the horizontal cross-sectional dimensions. A movable plate 114 is provided in the first space 112, and an expansion and contraction device 141 is provided between the cover plate 113 and the movable plate 114. The movable plate 114 may be pushed to move by the expansion of the expansion and contraction device 141. When powder is provided in the powder storage hopper 110, the movable plate 114 is first pressed on the powder, and then the expansion and contraction device 141 is provided on the movable plate 114, and then the cover plate 113 is covered. By continuously inputting fluid into the expansion and contraction device 141 , the expansion and contraction device 141 is continuously expanded, thereby pushing the moving plate 114 to continuously press the powder downward, thereby increasing the speed at which the powder enters the powder filling slider 120 from the powder storage hopper 110 .

[0037] Specifically, the expansion and contraction device 141 of this embodiment can be an expansion and contraction bag or an expansion and contraction bellows. Regardless of the device, it is in a contracted state before pressurization begins. When pressure needs to be applied to the powder, fluid is continuously input into the expansion and contraction device 141, which then begins to expand, pushing the movable plate 114 during the continuous expansion process.

[0038] Specifically, the fluid in this embodiment can be gas or liquid.

[0039] Preferably, a sealing ring may be provided at the outer periphery of the movable plate 114 . When the movable plate 114 is provided at the first space 112 , a seal is formed between the movable plate 114 and the powder storage hopper 110 to prevent the powder from entering the upper space from the side upward.

[0040] As a specific embodiment of the present invention, Figure 3 As shown, at least one guide groove 115 extending along the moving direction of the moving plate 114 is provided at the inner side wall of the powder storage hopper 110 forming the first space 112 of this embodiment. The outer periphery of the moving plate 114 is provided with a protrusion 116 cooperating with the guide groove 115, and the moving plate 114 moves along the guide groove 115 through the cooperation between the protrusion 116 and the guide groove 115.

[0041] Specifically, in this embodiment, at least one guide groove 115 is provided on the inner side wall of the powder filling hopper forming the first space 112, and a protrusion 116 (such as Figure 4 As shown), the movable plate 114 can be moved along the guide groove 115.

[0042] Specifically, the number of the guide groove 115 can be one or more. The multiple guide grooves 115 are evenly distributed on the inner side wall.

[0043] Specifically, the cross-sectional structure of each guide groove 115 can be square, conical, dovetail-shaped (such as Figure 4 As shown), etc., can be designed according to actual needs.

[0044] As a specific embodiment of the present invention, a handle 117 (such as Figure 4 shown) or drawstring (not shown).

[0045] Specifically, the handle 117 or the pull strap is mainly used to facilitate taking out the movable plate 114 when the movable plate 114 needs to be taken out from the powder storage hopper 110 before the next use after the movable plate 114 is pushed downward.

[0046] Of course, when the handle 117 is provided on the movable plate 114 , a groove (not shown in the figure) can be provided at the movable plate, and the handle 117 is arranged in the groove to prevent it from protruding from the plane where the movable plate 114 is located.

[0047] As a specific embodiment of the present invention, Figure 1 and Figure 2 As shown, the pressurizing device 140 of this embodiment may also include a first pressurizing tube 142 and a first pressurizer 143, one end of the first pressurizing tube 142 is connected to the first pressurizer 143, and the other end of the first pressurizing tube 142 is connected to the expansion and contraction device 141 to provide the expansion and contraction device 141 with fluid to expand it.

[0048] Specifically, the pressurizing device 140 of this embodiment may include a first pressurizing device 143 and a first pressurizing pipe 142. When the fluid is gas, the first pressurizing device 143 is a gas generating device. When the fluid is liquid, the first pressurizing device 143 may be a pressurizing pump. Of course, the first pressurizing device 143 is not limited thereto.

[0049] As a specific embodiment of the present invention, a through hole 118 is provided at the cover plate 113 of the present embodiment for the first pressurizing pipe 142 to pass through.

[0050] Specifically, the through hole 118 may be directly disposed in the middle of the cover plate 113 , or disposed near the outer periphery of the cover plate 113 .

[0051] As a specific embodiment of the utility model, the accommodating space 111 of the powder storage hopper 110 of this embodiment may further include a second space 119 whose cross section gradually decreases from close to the first space 112 to far away from the first space 112. The second space 119 is located below the first space 112 and is connected to the first space 112. The side structure of the movable plate 114 close to the second space 119 is configured to match the structure of the second space 119.

[0052] Specifically, the second space 119 of this embodiment is located at the bottom, and the cross-sectional size of the second space 119 is gradually reduced to facilitate the falling of the powder, thereby avoiding the situation where the powder is located in the corner of the space and cannot fall. In addition, the side of the moving plate 114 of this embodiment close to the second space 119 is configured to match the structure of the second space 119, which can also further increase the speed of the powder falling.

[0053] As a specific embodiment of the present invention, the powder feeding device 100 of this embodiment may further include a transition pipe 131, which may be disposed between the powder feeding pipe 130 and the powder storage hopper 110. A switch 132 is also disposed at the transition pipe 131.

[0054] Specifically, in this embodiment, a transition pipe 131 is provided between the powder delivery pipe 130 and the powder storage hopper 110, and a switch 132 is provided at the transition pipe, so that the switch can be opened when powder needs to be delivered from the powder storage hopper 110, and closed when powder does not need to be delivered from the powder storage hopper 110.

[0055] As a specific embodiment of the present invention, Figure 5 As shown, the pressurizing device 140 of this embodiment may include a second pressurizing pipe 144 and a second pressurizer 145. One end of the second pressurizing pipe 144 is disposed at the second pressurizer 145, and the other end is connected to the powder delivery pipe 130 to pressurize the powder in the powder delivery pipe 130.

[0056] Specifically, the second pressurizer 145 can only be a gas generating device or a gas pressurizing device, which increases the pressure by delivering gas into the powder feeding pipe 130 .

[0057] By arranging the second pressurizing pipe 144 and the second pressurizer 145 at the powder feeding pipe 130 , the powder in the powder feeding pipe 130 can be pressurized, thereby increasing the speed at which the powder enters the powder filling slider 120 .

[0058] As another embodiment of the utility model, the pressurizing device 140 of this embodiment may include a second pressurizing pipe 144 and a second pressurizer 145. One end of the second pressurizing pipe 144 is arranged at the second pressurizer 145, and the other end is connected to the transition pipe 130, so as to pressurize the powder in the powder delivery pipe 130, and the connection between the second pressurizing pipe 144 and the transition pipe 130 is located between the switch 132 and the powder delivery pipe 130.

[0059] Specifically, the switch 132 of the present embodiment can be closed when the second pressurizer 145 and the second pressurizing pipe 144 are started to pressurize the powder in the powder feeding pipe 130 .

[0060] Specifically, in one embodiment, Figure 1 and Figure 2 As shown, only the first pressurizing pipe 142, the expansion and contraction device 141 and the first pressurizer 143 are provided at the powder storage hopper 110, and the speed of the pressurized powder entering the powder filling slider 120 is increased by pressurizing the powder storage hopper 110. In another specific embodiment, as Figure 5 As shown, only the second pressurizing pipe 144 and the second pressurizer 145 are provided at the powder feeding pipe 130 to pressurize the powder in the powder feeding pipe 130, thereby increasing the speed at which the powder enters the powder filling slider 120. In another specific embodiment, as Figure 6 As shown, a first pressurizing pipe 142, an expansion and contraction device 141, and a first pressurizer 143 may be provided at the powder storage hopper 110 to increase the speed at which the powder enters the powder filling slider 120 by pressurizing the powder storage hopper 110. A second pressurizing pipe 144 and a second pressurizer 145 may be provided at the powder delivery pipe 130 to pressurize the powder in the powder delivery pipe 130 to increase the speed at which the powder enters the powder filling slider 120, and further, selective pressurization or double pressurization may be performed to increase the speed at which the powder enters the powder filling slider 120.

[0061] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived from the contents disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. A powder feeding device, characterized in that: include: A powder storage hopper having a containing space for storing powder; Powder filling slider; A powder delivery pipe connected between the bottom of the powder storage hopper and the powder filling slider to deliver the powder in the powder storage hopper to the powder filling slider; and A pressurizing device is arranged at the accommodating space of the powder storage hopper and / or at the powder feeding pipe to pressurize the powder storage hopper and / or the powder feeding pipe, thereby increasing the speed at which the powder enters the powder filling slider.

2. The powder feeding device according to claim 1, characterized in that: The accommodating space of the powder storage hopper includes a first space with a constant cross-sectional size; a cover plate detachably arranged with the powder storage hopper is arranged on one side of the first space; and a movable plate is also arranged in the first space; The pressurizing device comprises an expansion and contraction device with a variable volume, and the expansion and contraction device is arranged between the cover plate and the movable plate, so as to promote the movement of the movable plate through the expansion and contraction of the expansion and contraction device.

3. The powder feeding device according to claim 2, characterized in that: At least one guide groove extending along the moving direction of the movable plate is provided at the inner side wall of the powder storage hopper forming the first space; The outer periphery of the movable plate is provided with a convex block matched with the guide groove, and the movable plate moves along the guide groove through the cooperation between the convex block and the guide groove.

4. The powder feeding device according to claim 2, characterized in that: A handle or a pull strap is provided on one side of the movable plate facing the cover plate.

5. The powder feeding device according to claim 2, characterized in that: The pressurizing device further comprises a first pressurizing tube and a first pressurizer, one end of the first pressurizing tube is connected to the first pressurizer, and the other end of the first pressurizing tube is connected to the expansion and contraction device to provide the expansion and contraction device with fluid for expanding the expansion and contraction device.

6. The powder feeding device according to claim 5, characterized in that: The cover plate is provided with a through hole for the first pressurized pipe to pass through.

7. The powder feeding device according to claim 2, characterized in that: The accommodating space of the powder storage hopper further includes a second space whose cross-sectional size gradually decreases from close to the first space to far away from the first space, and the second space is located below the first space and communicates with the first space; The side structure of the moving plate close to the second space is configured to match the structure of the second space.

8. The powder feeding device according to claim 1, characterized in that: It also includes a transition pipe, which is arranged between the powder delivery pipe and the powder storage hopper; a switch is arranged at the transition pipe, and the switch is used to open or close the powder in the powder storage hopper to enter the powder delivery pipe.

9. The powder feeding device according to any one of claims 1 to 8, characterized in that: The pressurizing device includes a second pressurizing pipe and a second pressurizer; one end of the second pressurizing pipe is arranged at the second pressurizer, and the other end is connected to the powder delivery pipe to pressurize the powder in the powder delivery pipe.

10. The powder feeding device according to claim 8, characterized in that: The pressurizing device includes a second pressurizing pipe and a second pressurizer; one end of the second pressurizing pipe is arranged at the second pressurizer, and the other end is connected to the transition pipe to pressurize the powder in the powder feeding pipe, and the connection between the second pressurizing pipe and the transition pipe is located between the switch and the powder feeding pipe.

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