A continuous feeding device for friction stir additive manufacturing and a friction stir additive manufacturing apparatus having the same

Abstract

The application discloses a continuous feeding device for friction stir additive and a friction stir additive equipment with the same, and belongs to the field of additive manufacturing. The continuous feeding device comprises a plurality of feeding mechanisms. Each feeding mechanism comprises a feeding seat and a driving rod. The feeding seat is provided with a clutch. The driving rod has a threaded section. The clutch has a first state of threadedly cooperating with the driving rod and a second state of being separated from the driving rod. The feeding seat is further provided with a feeding port and a clamping piece. The clamping piece is installed on the feeding seat and is suitable for clamping additive bars. The feeding ports of the feeding seats of the plurality of feeding mechanisms are opposite to each other. The continuous feeding device further comprises a driving assembly. When the clutch is loose on the driving rod and the clamping piece does not clamp the bar, the driving assembly is used for driving the feeding seat to move in a direction opposite to the feeding direction. The first feeding mechanism and the second feeding mechanism are controlled to be threadedly cooperated with the driving rod or separated from the driving rod as needed, so that continuous feeding is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of additive manufacturing, and in particular to a continuous feeding device for friction stir additive manufacturing and a friction stir additive equipment having the same. Background Art

[0002] The common raw materials for stir friction deposition manufacturing are rods, wires, particles, etc., and the rod-based stir friction deposition manufacturing technology has the advantages of high efficiency, strong performance and low cost. However, the current related technologies are mostly non-continuous rod-feeding deposition manufacturing technologies. Continuous rod-feeding stir friction deposition manufacturing is extremely urgent in the fields of large-scale high-strength structural parts, dissimilar metal deposition manufacturing, etc., so it needs to be improved. Summary of the Invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, one object of the present invention is to propose a continuous feeding device for stir friction additive manufacturing, which includes a plurality of feeding mechanisms, which are arranged at vertical intervals, the feeding mechanism including a feeding seat and a driving rod, the feeding seat is provided with a clutch, the clutch has a first state of tightly fitting with the driving rod and a second state of loosening and separating from the driving rod, when in the first state, the driving rod can drive the feeding seat to move along the feeding direction, when in the second state, the clutch is loosely sleeved on the driving rod; the feeding seat is also provided with a feeding port and a clamping member, the clamping member is installed on the feeding seat, and is suitable for clamping additive rods, the feeding ports of the feeding seats of the plurality of feeding mechanisms are facing each other; the driving assembly, when the clutch is engaged When the feeding seat of the first feeding mechanism moves to the lower stroke position along the feeding direction, the driving assembly drives the feeding seat of the first feeding mechanism to move toward the upper stroke position in the direction opposite to the feeding direction, and / or, when the feeding seat of the second feeding mechanism moves to the lower stroke position along the feeding direction, the driving assembly drives the feeding seat of the second feeding mechanism to move toward the upper stroke position in the direction opposite to the feeding direction, and the upper stroke position and the lower stroke position are spaced apart along the feeding direction.

[0005] According to the above features, the present application can drive the feeding seat to move toward the lower stroke position through the driving rod. When the feeding seat moves to the lower stroke position, the clutch can be loosely sleeved on the driving rod, and then the feeding seat is driven by the driving assembly to move toward the upper stroke position in the direction opposite to the feeding direction. Then the clutch can be tightly engaged with the driving rod, the clamping part clamps the bar material, and then the driving rod drives the feeding seat to move along the feeding direction, and so on. The cycle is repeated to achieve continuous feeding.

[0006] Optionally, the drive rod has a threaded section. In the first state, the clutch and the threaded section of the drive rod are threadedly engaged. In the second state, the clutch and the threaded section of the drive rod are loosened and separated, and the clutch is loosely mounted on the threaded section of the drive rod.

[0007] Optionally, the driving rod of the first feeding mechanism and the driving rod of the second feeding mechanism are coaxially connected to form a driving rod assembly, and the driving rod assembly is power-coupled to the driving motor.

[0008] Optionally, the output end of the driving motor is located on a side of the second feeding mechanism away from the first feeding mechanism, and the driving rod assemblies include multiple driving rod assemblies, and the multiple driving rod assemblies are all power-coupled to the driving motor.

[0009] Optionally, the feeding device also includes a driving wheel and multiple transmission wheels, the driving wheel is power-coupled with the output end of the driving motor, the multiple transmission wheels are arranged in a one-to-one correspondence with the multiple drive rod assemblies, and the driving wheel and the multiple transmission wheels are power-coupled.

[0010] Optionally, the driving wheel includes a pulley portion, which is connected to the multiple transmission wheels through a transmission belt power coupling, or the driving wheel includes a gear portion, which is meshed with the multiple transmission wheels for transmission.

[0011] Optionally, a machine base is further included, and a plurality of feeding seats are movably arranged on the machine base in a vertical direction.

[0012] Optionally, it further includes a guide rail and a guide slide seat that cooperate with each other, one of the guide rail and the guide slide seat is arranged on the machine base, and the other is arranged on the feeding base.

[0013] Optionally, the driving assembly includes a driving member, which includes a driving seat and a movable rod. The movable rod and the driving seat can be relatively movably arranged, the driving seat is connected to one of the two feeding seats, and the movable rod is connected to the other of the two feeding seats.

[0014] Optionally, the driving member is a cylinder.

[0015] Another object of the present invention is to provide a continuous feeding friction stir additive device, which includes the above-mentioned continuous feeding device.

[0016] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0018] Figure 1Schematic diagram of the structure of a continuous feeding device for friction stir additive manufacturing according to one embodiment of the present invention;

[0019] Figure 2 Schematic diagram of the operation of a continuous feeding device according to one embodiment of the present invention;

[0020] Figure 3 is a schematic diagram of the operation of a continuous feeding device according to another embodiment of the present invention;

[0021] Figure 4 1 is a diagram showing the initial state of a continuous feeding device according to one embodiment of the present invention.

[0022] Reference numerals:

[0023] Rod 9; spindle 10; stirring head 11; material guide 12; auxiliary pressure rod 13;

[0024] Feeding mechanism 300; first feeding mechanism 300a; second feeding mechanism 300b;

[0025] Feeding seat 310; feeding port 311; driving rod 320; clutch member 330;

[0026] Guide rail 340; guide slide 350; driving member 360; lower stroke position detection element 370; lower limit position detection element 380;

[0027] The base 400; the output end 410 of the driving motor; the driving wheel 411; and the transmission wheel 412. DETAILED DESCRIPTION

[0028] The following describes embodiments of the present invention in detail. 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 intended to explain the present invention, but are not to be construed as limiting the present invention.

[0029] The core of rod-based friction stir deposition manufacturing (FSD) lies in conveying a rotating additive material rod onto the surface of a substrate or existing deposited layer. Violent friction between the rod and the substrate or existing layer generates frictional heat and plastic deformation heat, which causes the rod to soften plastically. Under the forging pressure of the shoulder, the plasticized material combines with the substrate or existing deposited layer to form a deposited layer. As the stir head moves, new deposited layers are continuously added to the existing layers, ultimately forming a three-dimensional solid part.

[0030] like Figure 1As shown, the friction stir additive device generally includes a movable spindle 10, which is provided with a rotatable stirring head 11. The spindle 10 drives the stirring head 11 and the additive rod 9 to rotate, rubbing on the surface of the substrate or the deposited layer, thereby realizing deposition manufacturing.

[0031] According to the records of the background technology, continuous feeding rod stir friction deposition manufacturing is extremely urgent to be applied in the fields of large-scale high-strength structural parts, dissimilar metal deposition manufacturing, etc. Therefore, this application proposes a continuous feeding device for stir friction additive manufacturing.

[0032] like Figure 1 As shown, the continuous feeding device includes a plurality of feeding mechanisms 300, and the plurality of feeding mechanisms 300 are arranged at vertical intervals. The plurality of feeding mechanisms 300 each include a feeding seat 310 and a driving rod 320. The plurality of feeding seats 310 are each provided with a clutch 330. The clutch 330 has a first state in which it is tightly engaged with the driving rod 320 and a second state in which it is loosened and separated from the driving rod 320. When in the first state, that is, when the clutch 330 is tightly engaged with the driving rod 320, the driving rod 320 can drive the feeding seat 310 to move along the feeding direction. When in the second state, that is, when the clutch 330 is loosened and separated from the driving rod 320, the clutch 330 is loosely sleeved on the driving rod 320.

[0033] like Figure 1 and Figure 2 As shown, each of the multiple feeding seats 310 is further provided with a feeding port 311 and a clamping member (not shown). The clamping member is mounted on the feeding seat 310 and is suitable for clamping the additive material bar. The feeding ports 311 of the feeding seats 310 of the multiple feeding mechanisms 300 are directly opposite. The feeding ports 311 of the feeding seats 310 of the multiple feeding mechanisms 300 are directly opposite, which allows the bar to be moved from one feeding seat 310 to another feeding seat 310 along the feeding direction. The clamping member can have a state of clamping the bar and a state of releasing the bar.

[0034] The continuous feeding device of the present invention further comprises a driving assembly, which is used to drive the feeding seat 310 to move in a direction opposite to the feeding direction when the clutch member 330 is loosely sleeved on the driving rod 320 and the clamping member does not clamp the bar material;

[0035] The plurality of feeding mechanisms 300 include at least a first feeding mechanism 300a and a second feeding mechanism 300b. Figure 1As shown, in one embodiment, the second feeding mechanism 300b and the first feeding mechanism 300a are arranged in a feeding direction. In another embodiment, the second feeding mechanism 300b and the first feeding mechanism 300a are arranged in a direction opposite to the feeding direction. For the convenience of description, the following embodiments are arranged in the feeding direction, i.e., the second feeding mechanism 300b is above the first feeding mechanism 300a, unless otherwise specified.

[0036] As shown, when the feeding device is working, the feeding seat of the first feeding mechanism 300a moves to the lower stroke position in the feeding direction, the driving assembly drives the feeding seat of the first feeding mechanism 300a to move in a direction opposite to the feeding direction towards the upper stroke position, or the feeding seat of the second feeding mechanism 300b moves to the lower stroke position in the feeding direction, the driving assembly drives the feeding seat of the second feeding mechanism 300b to move in a direction opposite to the feeding direction towards the upper stroke position, and the upper stroke position and the lower stroke position are arranged in the feeding direction. Figures 1 to 4 Specifically, when the clutch 330 of the first feeding mechanism 300a and the corresponding driving rod 320 are tightly matched, for example, the clutch 330 is tightly matched with the driving rod 320 after the screw nut matching, the driving rod 320 is driven to rotate, so that the feeding seat 310 of the first feeding mechanism 300a can move in the feeding direction. For example, the driving rod 320 can be driven by a cylinder, and after the clutch 330 is tightly matched with the driving rod 320, the driving rod 320 can drive the feeding seat 310 of the first feeding mechanism 300a to move in the feeding direction. During the movement of the feeding seat 310 of the first feeding mechanism 300a in the feeding direction, when the clamping part of the first feeding mechanism 300a clamps the bar, it can deliver the bar to the stirring head 11 for feeding. When the feeding seat 310 of the first feeding mechanism 300a moves to the lower stroke position, it can deliver the bar to the stirring head 11 for feeding. As shown, when the feeding seat 310 is at the lower stroke position, the clutch 330 can be in a state of separation from the driving rod 320, at this time, the clutch 330 is sleeved on the driving rod 320, that is, even if the driving rod 320 continues to rotate or move, it will not drive the feeding seat 310 to further move in the feeding direction.

[0037] Figure 2

[0038] ​​When the feeding seat 310 of the first feeding mechanism 300a moves to the lower stroke position, the feeding seat 310 of the second feeding mechanism 300b can be located at the upper stroke position, or between the lower stroke position and the upper stroke position, and the clutch 330 of the second feeding mechanism 300b is tightly clamped and cooperated with the driving rod 320 of the second feeding mechanism 300b, and the clamping member of the second feeding mechanism 300b clamps the bar material, and by driving the driving rod 320 of the second feeding mechanism 300b to rotate, the feeding seat 310 of the second feeding mechanism 300b can be moved along the feeding direction.

[0039] When the feeding seat 310 of the first feeding mechanism 300a moves to the lower stroke position, the driving assembly can be used to drive the feeding seat 310 toward the upper stroke position. During the upward movement, the clamping piece of the first feeding mechanism 300a is in a state of loosening the bar material. When the feeding seat 310 of the first feeding mechanism 300a moves to the upper stroke position, or between the upper stroke position and the lower stroke position, the clamping piece of the first feeding mechanism 300a is controlled to clamp the bar material, and then jointly clamp the bar material with the clamping piece of the second feeding mechanism 300b and move along the feeding direction to realize the transportation of the bar material.

[0040] like Figure 3 As shown, when the feeding seat 310 of the second feeding mechanism 300b moves to the lower stroke position, the clamping member of the second feeding mechanism 300b can be controlled to release the bar material, and then the driving component is used to drive the feeding seat 310 of the second feeding mechanism 300b to move to the upper stroke position, or between the upper stroke position and the lower stroke position, and then the clamping member of the second feeding mechanism 300b is controlled to clamp the bar material and jointly clamp the bar material with the clamping member of the first feeding mechanism 300a and move along the feeding direction to realize the transportation of the bar material.

[0041] In this way, the present application drives the feeding seat 310 to move toward the lower stroke position through the driving rod 320. When the feeding seat 310 moves to the lower stroke position, the clutch 330 can be loosely sleeved on the driving rod 320, and then the feeding seat 310 is driven by the driving assembly to move quickly toward the upper stroke position in the direction opposite to the feeding direction. When the feeding seat 310 moves to the upper stroke position, or between the upper stroke position and the lower stroke position, the clutch 330 can be tightly clamped and tightly matched with the driving rod 320, and then the driving rod 320 The feeding seat 310 is driven to move along the feeding direction. Furthermore, a first feeding mechanism 300a and a second feeding mechanism 300b are provided, so that when necessary, the clutch 330 of the first feeding mechanism 300a and / or the clutch 330 of the second feeding mechanism 300b are controlled to tightly cooperate with the driving rod 320, and when necessary, the clutch 330 of the first feeding mechanism 300a or the clutch 330 of the second feeding mechanism 300b are controlled to separate from the driving rod 320, and this cycle is repeated to achieve continuous feeding.

[0042] In one embodiment, Figure 1 As shown, the continuous feeding device further includes a material guide 12 and an auxiliary pressure rod 13. The material guide 12 has a material guide channel that is aligned with the feed opening of the feed base 310. During the continuous rod feeding process, when a rod-out signal is issued, a rod 9 can fall into the material guide channel. The auxiliary pressure rod 13 then presses the newly dropped rod 9, eliminating any gap between the upper and lower rods 9, thereby achieving continuous rod feeding.

[0043] In one embodiment, the drive rod 320 has a threaded section, such as a screw. In a first state, the clutch 330 is tightly threadedly engaged with the threaded section of the drive rod 320. In a second state, the clutch 330 is loosely coupled to the threaded section of the drive rod 320, leaving the clutch 330 free within the threaded section of the drive rod 320. This, using a screw-like transmission method, for example, ensures smooth feeding.

[0044] In one embodiment, one motor can be used to drive the driving rod 320 of the first feeding mechanism 300a to rotate, and another motor can be used to drive the driving rod 320 of the second feeding mechanism 300b to rotate, that is, two motors are used to drive the first feeding mechanism 300a and the second feeding mechanism 300b to work respectively.

[0045] In another embodiment, Figure 1 As shown, the drive rod 320 of the first feeding mechanism 300a and the drive rod 320 of the second feeding mechanism 300b are coaxially connected to form a drive rod assembly. The drive rod assembly is power-coupled to a drive motor. The drive rod assembly can be a one-piece structure or two drive rods 320 welded together, without specific limitation. In this way, a single motor can be provided to simultaneously drive the feed base 310 of the first feeding mechanism 300a and the feed base 310 of the second feeding mechanism 300b. This allows for continuous feeding while maintaining a simple and reliable structure and ensuring stable conveying. Furthermore, since there is only one power source, the deposition thrust can be kept stable within a controllable range, preventing sudden thrust changes.

[0046] In a specific example, Figure 1 As shown, two driving rod assemblies may be provided. In another embodiment, more than two driving rod assemblies may be provided.

[0047] In one embodiment, Figure 1As shown, the output end 410 of the drive motor is located on the side of the second feeding mechanism 300b facing away from the first feeding mechanism 300a. The drive rod assemblies include multiple drive rod assemblies, each of which is power-coupled to the output end 410 of the drive motor. In this way, a single drive motor can be provided to simultaneously drive the rotation of multiple drive rod assemblies, thereby driving the first feeding mechanism 300a and the second feeding mechanism 300b. Compared to providing two drive motors to drive the first feeding mechanism 300a and the second feeding mechanism 300b separately, the driving force output by a single drive motor is relatively stable and easy to control, avoiding the phenomenon of two drive motors being out of sync. Moreover, since there is only one power source, the deposition thrust can be kept stable within a controllable range, and thrust mutations and the like will not occur.

[0048] In one embodiment, Figure 1 As shown, the continuous feeding device further includes a drive wheel 411 and multiple transmission wheels 412. The drive wheel 411 is power-coupled to the output end 410 of the drive motor. The multiple transmission wheels 412 are provided in a one-to-one correspondence with the multiple drive rod assemblies. For example, multiple drive rod assemblies extend to their corresponding transmission wheels 412 and are fixedly connected to the transmission wheels 412. The drive wheel 411 and the multiple transmission wheels 412 are power-coupled. In this way, a single drive motor can simultaneously drive the rotation of multiple drive rod assemblies.

[0049] In one embodiment, the driving wheel 411 includes a pulley portion, which is connected to the plurality of transmission wheels 412 through a transmission belt power coupling. This makes the transmission simple and reliable, and is conducive to avoiding the transportation of bar materials.

[0050] In another embodiment, the driving wheel 411 may be a gear, which includes a gear portion, which meshes with the multiple transmission wheels 412 for transmission. The multiple transmission wheels 412 are also gears, and the gear transmission is stable and reliable.

[0051] In one embodiment, Figure 1 As shown, the machine base 400 is further included, and a plurality of feeding seats 310 are movably arranged vertically on the machine base 400. In this way, when the feeding seats 310 move to the lower stroke position, when the clamping member is in a state of not clamping the bar material, the feeding seats 310 can be moved to the upper stroke position, and then the clamping member clamps the bar material to achieve continuous feeding.

[0052] The driving of the feeding seat 310 to move on the machine base 400 can be achieved in various ways. In one embodiment, the continuous feeding device of the present application further comprises a guide rail 340 and a guide slide 350 which are matched with each other, one of which is arranged on the machine base 400 and the other is arranged on the feeding seat 310. In this way, the feeding seat 310 can be driven to slide on the machine base 400. In another embodiment, a screw nut transmission can also be used to drive the feeding seat 310 to move on the machine base 400.

[0053] In one embodiment, the driving assembly comprises a driving member 360 which comprises a driving seat and a movable rod, the movable rod being arranged to be movable relative to the driving seat. For example, the driving member 360 can be a cylinder, when the movable rod is fixed, the driving seat can move relative to the movable rod, and when the driving seat is fixed, the movable rod can move relative to the driving seat. For another example, the driving member 360 can be a mechanism similar to a screw nut, and the driving source thereof can be a motor, the motor being arranged in the driving seat, the motor driving the nut to rotate, when the movable rod is fixed, the driving seat and the nut can move relative to the movable rod, and when the movable rod is fixed, the driving seat and the nut can move relative to the movable rod.

[0054] In one specific embodiment, the driving member 360 is taken as an example of a cylinder. The driving seat is connected to one of the two feeding seats 310, and the movable rod is connected to the other of the two feeding seats 310. For example, the driving seat is mounted on the feeding seat 310 of the first feeding mechanism 300a, and the output end of the movable rod is mounted on the feeding seat 310 of the second feeding mechanism 300b, or the driving seat is mounted on the feeding seat 310 of the second feeding mechanism 300b, and the output end of the movable rod is mounted on the feeding seat 310 of the first feeding mechanism 300a. In one specific embodiment, for example, the driving seat is mounted on the feeding seat 310 of the first feeding mechanism 300a, and the output end of the movable rod is mounted on the feeding seat 310 of the second feeding mechanism 300b. When the feeding seat 310 of the second feeding mechanism 300b moves to the lower stroke position, the clutch member 330 of the second feeding mechanism 300b is loose on the driving rod 320, at this time, because the feeding seat 310 of the first feeding mechanism 300a is in cooperation with the driving rod 320, the driving seat is relatively fixed, and the feeding seat 310 of the second feeding mechanism 300b can be driven to move towards the upper stroke position by the movable rod. When the feeding seat 310 of the first feeding mechanism 300a moves to the lower stroke position, the clutch member 330 of the first feeding mechanism 300a is loose on the driving rod 320, at this time, because the feeding seat 310 of the second feeding mechanism 300b is in cooperation with the driving rod 320, the movable rod is relatively fixed, and the feeding seat 310 of the first feeding mechanism 300a can be driven to move towards the upper stroke position by the movable rod.

[0055] In one embodiment, Figure 1 As shown, the feeding mechanism 300 further includes a downstroke position detection element 370, which is disposed on the base 400. The downstroke position detection element 370 is used to detect whether the feeding base 310 is in the downstroke position. When the feeding base 310 is in the downstroke position, the corresponding clamping member can be controlled to release and the clutch member 330 can be released and separated.

[0056] In one embodiment, the feeding mechanism 300 further includes a lower limit position detection element 380, which is disposed on the machine base 400. The lower limit position detection element 380 is used to detect whether the feeding base 310 is located at the lower limit position. Normally, when the lower stroke position detection element 370 detects that the feeding base 310 is located at the lower stroke position, it controls the corresponding clamping member to release and the clutch member to release and separate, and the feeding base 310 will not continue to move to the lower limit position under the transmission of the drive rod. If the lower limit position detection element 380 detects that the feeding base 310 is located at the lower limit position, the machine needs to be shut down for maintenance, and the lower limit position detection element 380 plays a protective role.

[0057] In one embodiment, Figure 4 As shown, in the initial state of the present application, the feeding seat 310 of the second feeding mechanism 300b is set close to the upper stroke position, and the feeding seat 310 of the first feeding mechanism 300a is set close to the lower stroke position. In this way, it is difficult for the feeding seat 310 of the second feeding mechanism 300b and the feeding seat 310 of the first feeding mechanism 300a to be in the lower stroke position at the same time.

[0058] If the feeding seat 310 of the second feeding mechanism 300b and the feeding seat 310 of the first feeding mechanism 300a are simultaneously located at the lower stroke position, it is required to control the feeding seat 310 of the second feeding mechanism 300b or the feeding seat 310 of the first feeding mechanism 300a to move quickly towards the upper stroke position, for example, to control the feeding seat 310 of the second feeding mechanism 300b to move quickly towards the upper stroke position, then to control the clamping member of the second feeding mechanism 300b to clamp the bar 9, and then to control the clamping member of the first feeding mechanism 300a to release the bar, so as to realize the continuous pressure of the bar on the substrate. The distance between the lower stroke position and the lower limit position can be used as the buffer distance of the movement of the feeding seat 310 of the first feeding mechanism 300a, that is, during the movement of the feeding seat 310 of the second feeding mechanism 300b towards the upper stroke position, the feeding seat 310 of the first feeding mechanism 300a can continue to move towards the lower limit position. After the clamping member of the second feeding mechanism 300b clamps the bar and the clutch member 330 of the second feeding mechanism 300b is clamped, the clamping member of the first feeding mechanism 300a is controlled to release the bar, the clutch member 330 of the first feeding mechanism 300a is released and separated, and then the feeding seat of the first feeding mechanism 300a is driven to move towards the upper stroke position.

[0059] In a specific embodiment, the clutch member 330 can be a product made by using the prior art, such as a clutch, a shaft clamp device, etc. By clamping and releasing the clutch and the shaft clamp device, the transmission cooperation and release separation of the nut and the screw rod are realized.

[0060] The application also provides a continuous feeding friction stir additive manufacturing equipment. As shown in Figure 1 The continuous feeding friction stir additive manufacturing equipment includes the continuous feeding device and a movable spindle 10 provided with a rotatable stirring head 11, and the stirring head 11 is provided with a stirring head accommodating space for accommodating the bar 9, and the feeding port of the stirring head accommodating space is opposite to the feeding port of the feeding seat 310 of the plurality of feeding mechanisms 300. The continuous feeding device continuously feeds the stirring head 11, so as to realize continuous friction stir deposition manufacturing.

[0061] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0062] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0063] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A continuous feeding device for friction stir additive manufacturing, characterized in that: include: A plurality of feeding mechanisms are arranged vertically at intervals, each of the feeding mechanisms comprising a feeding seat and a driving rod, the feeding seat being provided with a clutch, the clutch having a first state of tightly engaging with the driving rod and a second state of loosening and separating from the driving rod, wherein the driving rod can drive the feeding seat to move in the feeding direction when in the first state, and the clutch is loosely sleeved on the driving rod when in the second state; The feeding seat is further provided with a feeding port and a clamping member, the clamping member is mounted on the feeding seat and is suitable for clamping the additive rod, and the feeding ports of the feeding seats of the plurality of feeding mechanisms are directly opposite; A driving assembly, when the clutch member is loosely sleeved on the driving rod and the clamping member does not clamp the bar material, the driving assembly is used to drive the feeding seat to move in a direction opposite to the feeding direction; Among them, the multiple feeding mechanisms include at least a first feeding mechanism and a second feeding mechanism. When the feeding seat of the first feeding mechanism moves to the lower stroke position along the feeding direction, the driving component drives the feeding seat of the first feeding mechanism to move toward the upper stroke position in the direction opposite to the feeding direction, and / or, when the feeding seat of the second feeding mechanism moves to the lower stroke position along the feeding direction, the driving component drives the feeding seat of the second feeding mechanism to move toward the upper stroke position in the direction opposite to the feeding direction, and the upper stroke position and the lower stroke position are arranged at intervals along the feeding direction.

2. The device according to claim 1, characterized in that The drive rod has a threaded section. In a first state, the clutch member is threadedly engaged with the threaded section of the drive rod. In a second state, the clutch member is loosened and separated from the threaded section of the drive rod, and the clutch member is loosely sleeved on the threaded section of the drive rod.

3. The device according to claim 1 or 2, characterized in that The driving rod of the first feeding mechanism and the driving rod of the second feeding mechanism are coaxially connected to form a driving rod assembly, and the driving rod assembly is power-coupled with the driving motor.

4. The device according to claim 3, characterized in that The output end of the driving motor is located on a side of the second feeding mechanism away from the first feeding mechanism. The driving rod assemblies include a plurality of driving rod assemblies, and the plurality of driving rod assemblies are all power-coupled to the driving motor.

5. The device according to claim 4, characterized in that The feeding device also includes a driving wheel and multiple transmission wheels, the driving wheel is power-coupled with the output end of the driving motor, the multiple transmission wheels are arranged in a one-to-one correspondence with the multiple driving rod assemblies, and the driving wheel and the multiple transmission wheels are power-coupled.

6. The device according to claim 5, characterized in that The driving wheel includes a pulley portion, which is connected to the plurality of transmission wheels through a transmission belt power coupling, or the driving wheel includes a gear portion, which is meshed with the plurality of transmission wheels for transmission.

7. The device according to claim 1, characterized in that It also includes a machine base, and a plurality of feeding seats are movably arranged in the vertical direction on the machine base.

8. The device according to claim 7, characterized in that It also includes a guide rail and a guide slide seat that cooperate with each other, one of the guide rail and the guide slide seat is arranged on the machine base, and the other is arranged on the feeding seat.

9. The device according to claim 1, characterized in that The driving assembly includes a driving member, which includes a driving seat and a movable rod. The movable rod and the driving seat can be relatively movably arranged. The driving seat is connected to one of the two feeding seats, and the movable rod is connected to the other of the two feeding seats.

10. The device according to claim 9, characterized in that The driving member is a cylinder.

11. A continuous feeding friction stir additive device, characterized in that: include: The continuous feeding device according to any one of claims 1 to 10.

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