A transfer device for powdered materials

Abstract

This utility model relates to the field of powder transportation technology, specifically disclosing a transfer device for powder materials. The outer shell includes an installation cavity, an inlet, an outlet, and a clearance opening. A feeding roller is rotatably installed in the installation cavity, and a receiving groove is formed on the outer peripheral wall of the feeding roller. The receiving groove receives material from the inlet and pours material to the outlet. When the feeding roller rotates, the receiving groove passes through the inlet, the clearance opening, and the outlet in sequence. A support frame for a cleaning component is slidably installed outside the outer shell, and a scraper is installed on the support frame. The scraper is located on the radial side of the feeding roller, and a cam drives the scraper to reciprocate radially along the feeding roller through the support frame. The scraper can enter and exit the receiving groove through the clearance opening. A drive component is used to drive the feeding roller and the cam to rotate. The scraper can loosen the material in the receiving groove, preventing the material from clumping or adhering to the receiving groove, thus changing the actual usable volume of the receiving groove and ensuring the looseness of the output material.

Description

Technical Field

[0001] This utility model relates to the field of powder transportation technology, and in particular to a transfer device for powder materials. Background Technology

[0002] Powdered materials are easily dispersed into the air during transfer and feeding, causing material waste and environmental pollution. Therefore, existing powder feeding structures use a motor to drive a powder feeding roller. The roller has grooves to catch the metal powder falling from the powder inlet. The amount of powder falling is quantitatively controlled by controlling the rotation angle of the motor to control the number of grooves or rotations of the roller. The powder feeding roller is located in a relatively sealed cavity to prevent the powder from spreading into the air.

[0003] Because the flowability of powdered materials is greatly affected by factors such as particle size, shape, humidity, and static electricity, clumping is likely to occur during the transfer process. This not only hinders the use of the material in subsequent processes, but also changes the usable volume of the receiving tank when the powder is adsorbed into it, making it difficult to control the amount of powder falling.

[0004] Therefore, there is an urgent need for a transfer device for powdered materials to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a transfer device for powdered materials to solve the problem of material clumping or adhering to the receiving trough, which changes the actual usable volume of the receiving trough.

[0006] On the one hand, this utility model provides a powder material transfer device, which includes:

[0007] The housing includes a mounting cavity and an inlet, an outlet, and a clearance opening that connect the indoor environment and the outdoor environment of the mounting cavity, with the inlet located above the outlet.

[0008] A feeding roller is rotatably installed in the aforementioned mounting cavity. A receiving groove is provided on the outer peripheral wall of the feeding roller. The receiving groove receives material from the aforementioned inlet and pours the material into the aforementioned outlet. When the feeding roller rotates, the receiving groove passes through the aforementioned inlet, the aforementioned clearance opening, and the aforementioned outlet in sequence.

[0009] The cleaning assembly includes a cam, a support frame, and a scraper. The cam is rotatably mounted on the housing, the support frame is slidably mounted outside the housing, and the scraper is mounted on the support frame. The scraper is located on the radial side of the feed roller. The cam drives the scraper to reciprocate radially along the feed roller through the support frame. The scraper can enter and exit the receiving trough through the clearance opening.

[0010] A drive assembly is used to drive the aforementioned feed roller and the aforementioned cam to rotate.

[0011] As a preferred embodiment of the aforementioned powder material transfer device, the cam is provided with a guide groove, the guide groove includes opposing side walls spaced radially along the feed roller, and a portion of the support frame is sandwiched between the side walls.

[0012] As a preferred embodiment of the aforementioned powder material transfer device, the support frame includes a frame body and rollers. The scraper is mounted on the frame body, and the rollers are rotatably mounted on the frame body. The frame body contacts the cam via the rollers, and the rotation axis of the rollers is parallel to the rotation axis of the cam.

[0013] As a preferred embodiment of the aforementioned powder material transfer device, the aforementioned feeding roller has multiple receiving grooves, which are arranged sequentially around the axis of the aforementioned feeding roller.

[0014] As a preferred embodiment of the aforementioned powder material transfer device, two cams are provided, which are symmetrically installed on both sides of the axial direction of the feeding roller and coaxially fixed with the feeding roller.

[0015] As a preferred embodiment of the above-mentioned powder material transfer device, the outer shell is provided with a guide hole, the support frame includes a guide post, the guide post is slidably inserted into the guide hole, and the axis of the guide hole is parallel to the radial direction of the feeding roller.

[0016] As a preferred embodiment of the above-mentioned powder material transfer device, the guide hole is a blind hole, and the guide hole and / or the guide post are provided with air guide grooves along the axial direction.

[0017] As a preferred embodiment of the above-mentioned powder material transfer device, it also includes a scraper, which is installed at the clearance opening. One end of the scraper is always in close contact with the scraper bar, and the scraper and the scraper bar can move relative to each other in the radial direction of the feed roller.

[0018] As a preferred embodiment of the aforementioned powder material transfer device, both the feed inlet and the discharge outlet are opened in a vertical direction and are spaced apart in a first horizontal direction. The axis of the feeding roller is parallel to the second horizontal direction, and the first horizontal direction is perpendicular to the second horizontal direction.

[0019] As a preferred embodiment of the aforementioned powder material transfer device, the aforementioned drive assembly includes a motor, a drive wheel, a driven wheel, a transmission belt, and a sealed bearing. The motor is mounted on the aforementioned housing and located outside the aforementioned mounting cavity. The output end of the motor is coaxially fixed to the aforementioned drive wheel. The aforementioned feed roller is coaxially fixed to the aforementioned driven wheel. The aforementioned drive wheel and the aforementioned driven wheel are driven by the aforementioned transmission belt. The aforementioned feed roller is rotatably connected to the aforementioned housing through the aforementioned sealed bearing.

[0020] The powder material transfer device provided by this utility model has at least the following beneficial effects:

[0021] This application provides a powder material transfer device, including a housing, a feeding roller, a cleaning component, and a drive component. The housing includes an installation cavity and an inlet, an outlet, and a clearance opening connecting the indoor and outdoor environments of the installation cavity. The inlet is located above the outlet. The feeding roller is rotatably mounted within the installation cavity. A receiving groove is formed on the outer peripheral wall of the feeding roller. The receiving groove receives material from the inlet and pours material towards the outlet. When the feeding roller rotates, the receiving groove passes sequentially through the inlet, clearance opening, and outlet. The cleaning component includes a cam, a support frame, and a scraper. The cam is rotatably mounted on the housing, the support frame is slidably mounted outside the housing, and the scraper is mounted on the support frame. The scraper is located on one radial side of the feeding roller. The cam drives the scraper to reciprocate radially along the feeding roller via the support frame. The scraper can enter and exit the receiving groove through the clearance opening. The drive component drives the feeding roller and the cam to rotate.

[0022] In operation, the feeding roller rotates around its axis, and the receiving trough sequentially passes through the inlet, the clearance opening, and the outlet. When passing the inlet, the receiving trough picks up material. As it rotates towards the clearance opening, a cam drives the scraper to move towards the feeding roller. The rotation of the feeding roller and the movement of the scraper are synchronized. When the feeding roller reaches the clearance opening, the scraper extends into the receiving trough. Due to the relative rotation and movement between the receiving trough and the scraper, the scraper can loosen the powder material in the receiving trough, preventing the material from clumping or sticking to the trough. As the receiving trough continues to rotate towards the outlet, the opening of the receiving trough gradually tilts downwards, allowing the material to be poured into the outlet.

[0023] This configuration, using the receiving trough of the feeding roller for powdered material transfer, ensures that the quality of the material transported each time is basically consistent. The cam of the cleaning component, in conjunction with the rotation of the feeding roller, ensures that the movement timing of the scraper is always matched with the rotation position of the receiving trough. This reduces the contact between the scraper and the outer contour of the feeding roller, reducing scraper wear. Furthermore, the scraper can loosen the material in the receiving trough, preventing material from clumping or adhering to the receiving trough and thus changing the actual usable volume of the receiving trough. This further reduces material transport losses, improves the consistency of material input and output quality, and ensures the looseness of the output material. Attached Figure Description

[0024] Figure 1 This is a first structural schematic diagram of the powder material transfer device in an embodiment of this utility model;

[0025] Figure 2 This is a schematic diagram of the second structure of the powder material transfer device in an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of the powder material transfer device (excluding the cleaning component and the drive component) in an embodiment of this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the powder material transfer device (excluding the outer shell and drive assembly) in an embodiment of this utility model;

[0028] Figure 5 for Figure 4 A magnified view of a section at point A in the middle;

[0029] Figure 6 This is a first cross-sectional view of the powder material transfer device in an embodiment of this utility model;

[0030] Figure 7 This is a second cross-sectional view of the powder material transfer device in an embodiment of this utility model.

[0031] In the picture:

[0032] X, first horizontal direction; Y, second horizontal direction; Z, vertical direction;

[0033] 1. Outer shell; 12. Inlet; 13. Outlet; 14. Clearance opening; 15. Guide hole;

[0034] 2. Feeding roller; 21. Receiving trough;

[0035] 31. Cam; 311. Guide groove; 32. Support frame; 321. Frame body; 322. Roller; 323. Guide column; 33. Scraper; 34. Scraper blade;

[0036] 4. Drive assembly; 41. Motor; 42. Drive pulley; 43. Driven pulley; 44. Drive belt; 45. Sealed bearing. Detailed Implementation

[0037] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0038] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0041] like Figures 1 to 7As shown, this application provides a powder material transfer device, including a housing 1, a feeding roller 2, a cleaning assembly, and a drive assembly 4. The housing 1 includes an installation cavity and an inlet 12, an outlet 13, and a clearance 14 connecting the indoor and outdoor environments of the installation cavity. The inlet 12 is located above the outlet 13. The feeding roller 2 is rotatably mounted within the installation cavity. A receiving groove 21 is formed on the outer peripheral wall of the feeding roller 2. The receiving groove 21 receives material from the inlet 12 and pours the material towards the outlet 13. When the feeding roller 2 rotates, the receiving groove 21 passes sequentially through the inlet 12, the clearance 14, and the outlet 13. 3; The cleaning assembly includes a cam 31, a support frame 32, and a scraper 33. The cam 31 is rotatably mounted on the housing 1, the support frame 32 is slidably mounted outside the housing 1, and the scraper 33 is mounted on the support frame 32. The scraper 33 is located on the radial side of the feeding roller 2. The cam 31 drives the scraper 33 to reciprocate along the radial direction of the feeding roller 2 through the support frame 32. The scraper 33 can enter and exit the receiving groove 21 through the clearance port 14. The drive assembly 4 is used to drive the feeding roller 2 and the cam 31 to rotate.

[0042] For example, the housing 1 provides a mounting carrier for other parts. The interior of the housing 1 forms a mounting cavity, which is relatively closed and can limit the overflow of powdery materials. The housing 1 also has an inlet 12, an outlet 13 and a clearance opening 14 that connect the indoor environment of the mounting cavity with the outdoor environment. The feeding mechanism provides materials into the mounting cavity through the inlet 12 and the outlet 13 is used to provide materials to the downstream mechanism. The feeding roller 2 is installed in the mounting cavity. The feeding roller 2 can rotate around the axis relative to the outer shell 1. The outer peripheral wall of the feeding roller 2 is provided with a receiving groove 21. The feeding roller 2 is located between the inlet 12 and the outlet 13. The receiving groove 21 is used to receive materials. When the feeding roller 2 rotates, the receiving groove 21 can transport materials between the inlet 12 and the outlet 13. When the receiving groove 21 rotates to the inlet 12, the opening of the receiving groove 21 faces upward and is directly opposite the inlet 12 to obtain materials. When the receiving groove 21 rotates to the outlet 13, the opening of the receiving groove 21 tilts downward to pour the materials into the outlet 13. The cleaning mechanism includes a cam 31, a support frame 32, and a scraper 33. The cam 31 is rotatably mounted on the housing 1, the support frame 32 is mounted on the outside of the mounting cavity, and the scraper 33 is mounted on the support frame 32. The scraper 33 is slidably inserted into the clearance opening 14 and can enter and exit the receiving groove 21. The cam 31 can drive the support frame 32 and the scraper 33 to move radially along the feeding roller 2.

[0043] In use, the feeding roller 2 rotates around its axis, and the receiving trough 21 passes sequentially through the inlet 12, the clearance opening 14, and the outlet 13. When passing through the inlet 12, the receiving trough 21 picks up material. As it rotates towards the clearance opening 14, the cam 31 drives the scraper 33 to move towards one side of the feeding roller 2. The rotation of the feeding roller 2 and the movement of the scraper 33 are synchronized. When the feeding roller 2 reaches the clearance opening 14, the scraper 33 extends into the receiving trough 21. Due to the relative rotation and relative movement between the receiving trough 21 and the scraper 33, the scraper 33 can loosen the powder material in the receiving trough 21, preventing the material from clumping or sticking inside the receiving trough 21. As the receiving trough 21 continues to rotate towards the outlet 13, the opening of the receiving trough 21 gradually tilts downward, causing the material to be poured into the outlet 13.

[0044] With this configuration, the powdered material is transferred through the receiving trough 21 of the feeding roller 2, ensuring that the quality of the material transported each time is basically consistent. The cam 31 of the cleaning component works in conjunction with the rotation of the feeding roller 2, so that the movement timing of the scraper 33 is always matched with the rotation position of the receiving trough 21. This reduces the contact between the scraper 33 and the outer contour of the feeding roller 2, reduces the wear of the scraper 33, and the scraper 33 can loosen the material in the receiving trough 21, preventing the material from clumping or adhering to the receiving trough 21, which would change the actual usable volume of the receiving trough 21. Furthermore, this reduces material transportation losses, improves the consistency of material input and output quality, and also ensures the looseness of the output material.

[0045] Furthermore, the mounting cavity is a cylindrical cavity.

[0046] Furthermore, the scraper 33 is spaced apart from the feeding roller 2, meaning that the scraper 33 never comes into contact with the inner wall of the receiving groove 21, thus avoiding wear.

[0047] Optionally, the cam 31 has a guide groove 311, which includes opposing side walls spaced radially along the feed roller 2, and a portion of the support frame 32 is sandwiched between the side walls.

[0048] For example, the axial end face of the cam 31 is provided with a guide groove 311. The depth direction of the guide groove 311 is parallel to the axial direction of the cam 31, and the width direction of the guide groove 311 is the radial direction of the cam 31. The two opposite side walls in the width direction of the guide groove 311 are respectively referred to as the first side wall and the second side wall. The first side wall is located in the inner ring, and the second side wall is located in the outer ring. Part of the support frame 32 is inserted into the guide groove 311 and sandwiched between the first side wall and the second side wall. In this way, when the cam 31 rotates, the cam 31, through the alternating action of the first side wall and the second side wall on the support frame 32, enables the scraper 33 to extend into or out of the receiving groove 21 along the radial direction of the feeding roller 2.

[0049] Furthermore, the outer contour of the cam 31 is circular, and the contour of the guide groove 311 is the structure of the cam 31.

[0050] Optionally, the support frame 32 includes a frame body 321 and rollers 322. The scraper 33 is installed on the frame body 321, and the rollers 322 are rotatably installed on the frame body 321. The frame body 321 contacts the cam 31 through the rollers 322, and the rotation axis of the rollers 322 is parallel to the rotation axis of the cam 31.

[0051] With this configuration, rolling friction is generated between the support frame 32 and the cam 31, thereby reducing the friction generated when the two move relative to each other.

[0052] Optionally, the feeding roller 2 has multiple receiving grooves 21, which are arranged sequentially around the axis of the feeding roller 2.

[0053] With this configuration, when the feeding roller 2 rotates once, multiple receiving grooves 21 can sequentially obtain materials from the feed inlet 12 and sequentially pour the materials into the discharge outlet 13.

[0054] Optionally, two cams 31 are provided, and the two cams 31 are symmetrically installed on both sides of the axial direction of the feeding roller 2 and are fixed coaxially with the feeding roller 2.

[0055] With this configuration, one of the cam 31 and the feeding roller 2 drives the other, requiring only one of them to be equipped with a driver. Furthermore, the cam 31 can move synchronously with the feeding roller 2, maintaining a relatively high degree of consistency in their rotation. This also makes the timing of the scraper 33's movement more compatible with the rotation speed of the receiving trough 21. That is, when the receiving trough 21 rotates to the scraper 33, the scraper 33 can extend to scrape out the material in the receiving trough 21. When the receiving trough 21 moves away, the scraper 33 retracts in time to avoid interference.

[0056] Optionally, the outer casing 1 has a guide hole 15, and the support frame 32 includes a guide post 323, which is slidably inserted into the guide hole 15. The axis of the guide hole 15 is parallel to the radial direction of the feeding roller 2.

[0057] This configuration ensures that when the cam 31 drives the support frame 32 to move by rotation, the support frame 32 always moves along the axis of the guide post 323 and the guide hole 15, thus regulating the movement trajectory of the scraper 33.

[0058] Optionally, the guide hole 15 is a blind hole, and the guide hole 15 and / or the guide post 323 are provided with an air guide groove along the axial direction.

[0059] For example, the support frame 32 is located outside the mounting cavity, and the opening of the guide hole 15 faces away from the mounting cavity and is not connected to the mounting cavity to prevent powder material from overflowing from the guide hole 15. Since the guide hole 15 is a blind hole, when the guide post 323 extends into it, the air pressure inside it increases, which affects the smooth entry of the guide post 323. Therefore, air guide grooves are opened on the inner circumferential side of the guide hole 15 and / or the outer circumferential wall of the guide post 323 so that the rodless cavity of the guide post 323 can communicate with the outside to balance the air pressure.

[0060] Optionally, a scraper 34 is also included. The scraper 34 is installed at the clearance opening 14. One end of the scraper 34 is always in close contact with the scraper bar 33, and the scraper 34 and the scraper bar 33 can move relative to each other in the radial direction of the feed roller 2.

[0061] For example, the scraper 34 is inclined, with one end connected to the housing 1 and the other end inclined towards the mounting cavity and towards the other end face of the clearance opening 14. When the scraper 33 moves linearly under the drive of the cam 31, the scraper 33 and the scraper 34 form a relative motion. When the scraper 33 moves away from the feeding roller 2, the scraper 34 will scrape off the material attached to the scraper 33. The material falls into the discharge port 13 along the gap between the mounting cavity and the feeding roller 2.

[0062] Furthermore, scrapers 34 are installed on both opposite side walls of the clearance opening 14, with the free end of the scraper 34 centrally positioned and clamped to the scraper 33 along the thickness direction of the scraper 33.

[0063] In one embodiment, the scraper 34 is connected to the housing 1 via an elastic element. The elastic element makes the scraper 34 always tend to close the clearance opening 14, so that when the scraper bar 33 approaches the feeding roller 2, the scraper 34 always sticks tightly to the scraper bar 33 and scrapes off the material attached to the scraper bar 33.

[0064] In another embodiment, the scraper 34 is a rubber component that has the ability to deform elastically.

[0065] Optionally, the feed inlet 12 and the discharge outlet 13 are both opened along the vertical direction Z and are spaced apart in the first horizontal direction X. The axis of the feed roller 2 is parallel to the second horizontal direction Y, and the first horizontal direction X is perpendicular to the second horizontal direction Y.

[0066] This configuration, due to the vertical opening of the feed inlet 12, reduces the contact between the material and the inner wall of the feed inlet 12 when the feeding mechanism supplies material to the feed roller 2, thus reducing the amount of material adhering to the inside of the feed inlet 12. Similarly, due to the vertical opening of the discharge outlet 13, the contact between the material and the inner wall of the discharge outlet 13 when the feed roller 2 pours material into the discharge outlet 13, thus reducing the amount of material adhering to the inside of the discharge outlet 13. Furthermore, the spacing between the feed inlet 12 and the discharge outlet 13 in the first horizontal direction X prevents some material from falling outside the feed roller 2 and being directly discharged from the discharge outlet 13 when feeding through the feed inlet 12. Since this part bypasses the transport and distribution of the feed roller 2, it can easily lead to poor consistency in the weight of each portion of material.

[0067] Optionally, the drive assembly 4 includes a motor 41, a drive wheel 42, a driven wheel 43, a transmission belt 44, and a sealed bearing 45. The motor 41 is mounted on the housing 1 and located outside the mounting cavity. The output end of the motor 41 is coaxially fixed with the drive wheel 42, and the feed roller 2 is coaxially fixed with the driven wheel 43. The drive wheel 42 and the driven wheel 43 are driven by the transmission belt 44. The feed roller 2 is rotatably connected to the housing 1 through the sealed bearing 45.

[0068] In one embodiment, the drive assembly 4 is equipped with only one motor 41, and the cam 31 is connected to the feed roller 2 in a transmission connection, both of which are driven by the same motor 41.

[0069] In another embodiment, the drive assembly 4 is provided with two motors 41, which are used to drive the cam 31 and the feed roller 2 respectively.

[0070] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A transfer device for powdered materials, characterized in that, include: The outer casing (1) includes an installation cavity and an inlet (12), an outlet (13) and a clearance opening (14) that connect the indoor environment and the outdoor environment of the installation cavity, wherein the inlet (12) is located above the outlet (13); The feeding roller (2) is rotatably installed in the mounting cavity. The outer peripheral wall of the feeding roller (2) is provided with a receiving groove (21). The receiving groove (21) receives the material from the feed inlet (12) and pours the material to the discharge outlet (13). When the feeding roller (2) rotates, the receiving groove (21) passes through the feed inlet (12), the clearance opening (14) and the discharge outlet (13) in sequence. The cleaning assembly includes a cam (31), a support frame (32), and a scraper (33). The cam (31) is rotatably mounted on the housing (1), the support frame (32) is slidably mounted on the outside of the housing (1), and the scraper (33) is mounted on the support frame (32). The scraper (33) is located on the radial side of the feeding roller (2). The cam (31) drives the scraper (33) to reciprocate radially along the feeding roller (2) through the support frame (32). The scraper (33) can enter and exit the receiving groove (21) through the clearance opening (14). A drive assembly (4) is used to drive the feed roller (2) and the cam (31) to rotate.

2. The powder material transfer device according to claim 1, characterized in that, The cam (31) has a guide groove (311), which includes opposing side walls arranged radially at intervals along the feed roller (2), and part of the support frame (32) is sandwiched between the side walls.

3. The powder material transfer device according to claim 1, characterized in that, The support frame (32) includes a frame body (321) and rollers (322). The scraper (33) is installed on the frame body (321), and the rollers (322) are rotatably installed on the frame body (321). The frame body (321) contacts the cam (31) through the rollers (322), and the rotation axis of the rollers (322) is parallel to the rotation axis of the cam (31).

4. The powder material transfer device according to claim 1, characterized in that, The feeding roller (2) has multiple receiving grooves (21), which are arranged sequentially around the axis of the feeding roller (2).

5. The powder material transfer device according to claim 1, characterized in that, Two cams (31) are provided, and the two cams (31) are symmetrically installed on both sides of the axial direction of the feeding roller (2) and are fixed coaxially with the feeding roller (2).

6. The powder material transfer device according to claim 1, characterized in that, The outer casing (1) has a guide hole (15), and the support frame (32) includes a guide post (323). The guide post (323) is slidably inserted into the guide hole (15), and the axis of the guide hole (15) is parallel to the radial direction of the feeding roller (2).

7. The powder material transfer device according to claim 6, characterized in that, The guide hole (15) is a blind hole, and the guide hole (15) and / or the guide post (323) are provided with air guide grooves along the axial direction.

8. The powder material transfer device according to claim 1, characterized in that, It also includes a scraper (34), which is installed at the clearance opening (14). One end of the scraper (34) is always in close contact with the scraper bar (33), and the scraper (34) and the scraper bar (33) can move relative to each other in the radial direction of the feed roller (2).

9. The powder material transfer device according to claim 1, characterized in that, The feed inlet (12) and the discharge outlet (13) are both opened in the vertical direction (Z) and are spaced apart in the first horizontal direction (X). The axis of the feeding roller (2) is parallel to the second horizontal direction (Y), and the first horizontal direction (X) is perpendicular to the second horizontal direction (Y).

10. The powder material transfer device according to claim 1, characterized in that, The drive assembly (4) includes a motor (41), a drive wheel (42), a driven wheel (43), a transmission belt (44), and a sealed bearing (45). The motor (41) is mounted on the housing (1) and located outside the mounting cavity. The output end of the motor (41) is coaxially fixed to the drive wheel (42). The feed roller (2) is coaxially fixed to the driven wheel (43). The drive wheel (42) and the driven wheel (43) are driven by the transmission belt (44). The feed roller (2) is rotatably connected to the housing (1) through the sealed bearing (45).

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