Continuous feeding device for friction stir additive material and friction stir additive material equipment with continuous feeding device

Abstract

The invention discloses a continuous feeding device for friction stir additive and friction stir additive equipment with the continuous feeding device, and belongs to the technical field of additive manufacturing, the continuous feeding device comprises a plurality of feeding mechanisms arranged at intervals in the vertical direction, each feeding mechanism comprises a feeding seat and a driving rod, at least part of each driving rod is a reciprocating lead screw, and the reciprocating lead screws are arranged on the feeding seats. The feeding seats are in threaded fit with the driving rod, each feeding seat is provided with a feeding opening and a clamping piece, the clamping pieces are installed on the feeding seats and suitable for clamping the additive bars, the feeding openings of the feeding seats of the multiple feeding mechanisms directly face each other, the driving rod comprises a threaded section with threads, the threaded section is provided with a first end and a second end in the axis direction of the driving rod, and the first end and the second end face each other. The multiple feeding mechanisms at least comprise the first feeding mechanism and the second feeding mechanism, the reciprocating lead screw can be used for driving the feeding bases to move in a reciprocating mode, and the feeding bases of the first feeding mechanism and the feeding bases of the second feeding mechanism alternately operate to achieve continuous feeding.

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. The stir friction deposition manufacturing technology based on rods has the advantages of high efficiency, strong performance and low cost. However, most of the relevant technologies are currently 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., and therefore 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, an object of the present invention is to provide a continuous feeding device for stir friction additive, comprising a plurality of feeding mechanisms, the plurality of feeding mechanisms being arranged at intervals along a vertical direction, wherein the feeding mechanism comprises a feeding seat and a driving rod, at least a portion of the driving rod being a reciprocating screw rod, the feeding seat being threadedly matched with the driving rod, the feeding seat being provided with a feeding port and a clamping member, the clamping member being mounted on the feeding seat and being suitable for clamping an additive rod, the feeding ports of the feeding seats of the plurality of feeding mechanisms being directly opposite;

[0005] In which, the driving rod includes a threaded segment with a thread, the threaded segment has a first end and a second end along the axial direction of the driving rod, and 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 first end of the threaded segment of the driving rod of the first feeding mechanism, the feeding seat of the second feeding mechanism is located at the second end of the threaded segment of the driving rod of the second feeding mechanism, and / or when the feeding seat of the first feeding mechanism moves to the second end of the threaded segment of the driving rod of the first feeding mechanism, the feeding seat of the second feeding mechanism is located at the first end of the threaded segment of the driving rod of the second feeding mechanism.

[0006] According to the above technical features, the present application can utilize a reciprocating screw to drive the feeding seat to reciprocate, and by setting up a first feeding mechanism and a second feeding mechanism, the feeding seat of the first feeding mechanism and the feeding seat of the second feeding mechanism can be alternately operated to achieve continuous feeding.

[0007] Optionally, the feeding mechanism further comprises a guide rod, which is arranged in parallel and spaced relation with the driving rod, and the feeding seat is loosely sleeved on the guide rod so that the feeding seat and the guide rod are slidably matched.

[0008] Optionally, the driving rod of the first feeding mechanism is connected to the guiding rod of the second feeding mechanism or is an integrated structure, and the driving rod of the second feeding mechanism is connected to the guiding rod of the first feeding mechanism or is an integrated structure.

[0009] Optionally, a driving device is further included, and the driving device is dynamically coupled to the driving rod and / or the guiding rod.

[0010] Optionally, a driving device is further included, wherein an output end of the driving device is located on a side of the second feeding mechanism away from the first feeding mechanism, and a plurality of driving rods are all power-coupled to the driving device.

[0011] Optionally, it also includes a driving gear and a plurality of transmission gears, the driving gear is coupled to the output end of the driving device by power, and the transmission gear is meshed with the driving gear, and the plurality of transmission gears are arranged in one-to-one correspondence with the plurality of driving rods.

[0012] Optionally, the driving gear includes a meshing portion and a pulley portion, the meshing portion and the pulley portion are coaxial and fixedly connected, the meshing portion meshes with the transmission gear, and the pulley portion is connected to the driving device through a transmission belt power coupling.

[0013] Optionally, it further includes a frame, a receiving space is formed in the frame, the feeding mechanism is installed in the receiving space, the driving device is installed outside the frame, and the driving gear and the transmission gear are installed on the frame and located outside the receiving space.

[0014] Optionally, the feeding mechanism further includes a lower limit detection element and an upper limit detection element, the lower limit detection element is used to detect whether the feeding seat is located at the first end, and the upper limit detection element is used to detect whether the feeding seat is located at the second end.

[0015] Optionally, when the lower limit detection element of the first feeding mechanism detects that the feeding seat of the first feeding mechanism has moved to the first end, and the upper limit detection element of the second feeding mechanism detects that the feeding seat of the second feeding mechanism has moved to the second end, the clamping member of the second feeding mechanism is first controlled to clamp the bar material, and then the clamping member of the first feeding mechanism is controlled to release the bar material; or, when the lower limit detection element of the second feeding mechanism detects that the feeding seat of the second feeding mechanism has moved to the first end, and the upper limit detection element of the first feeding mechanism detects that the feeding seat of the first feeding mechanism is located at the second end, the clamping member of the first feeding mechanism is first controlled to clamp the bar material, and then the clamping member of the second feeding mechanism is controlled to release the bar material.

[0016] Optionally, the feeding mechanism also includes a lower origin detection element and an upper origin detection element, and the lower limit detection element, the lower origin detection element, the upper origin detection element and the upper limit detection element are arranged at vertical intervals; the lower origin detection element is used to detect whether the feeding seat is located at the lower origin position, and the upper origin detection element is used to detect whether the feeding seat is located at the upper origin position; the distance between the feeding seat at the lower origin position and the feeding seat at the first end is d1, and the distance between the feeding seat at the upper origin position and the feeding seat at the second end is d2, wherein d1=d2; in the initial state, the feeding seat of the first feeding mechanism is located at the lower origin position and the feeding seat of the second feeding mechanism is located at the upper origin position, or, in the initial state, the feeding seat of the first feeding mechanism is located at the upper origin position and the feeding seat of the second feeding mechanism is located at the lower origin position.

[0017] Another object of the present invention is to provide a continuous feeding friction stir additive equipment, which includes the above-mentioned continuous feeding device.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0020] Figure 1 It is a structural schematic diagram of a continuous feeding device according to one embodiment of the present invention;

[0021] Figure 2 A schematic diagram of a reciprocating screw rod according to an embodiment of the present invention;

[0022] Figure 3 It is the operation schematic diagram of the continuous feeding device;

[0023] Figure 4 Another operation schematic diagram of the continuous feeding device.

[0024] Reference numerals:

[0025] Frame 1; partition 2; rod 9; spindle 10; stirring head 11;

[0026] Feeding mechanism 100; first feeding mechanism 100a; second feeding mechanism 100b;

[0027] Feeding seat 110; clamping member 111; driving rod 120; reciprocating screw rod 121; first end 121a; second end 121b;

[0028] Lower limit detection element 130; upper limit detection element 140; lower origin detection element 150; upper origin detection element 160;

[0029] Driving device 200; driving gear 210; transmission gear 220. DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described in detail below, examples of which 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 be used to explain the present invention, and should not be construed as limiting the present invention.

[0031] The core of the rod-based friction stir deposition manufacturing is to transport the rotating additive rods to the surface of the substrate or the deposited layer. These additive rods and the substrate or the deposited layer rub violently, generating friction heat and plastic deformation heat, thereby plastically softening the additive rods. Under the forging pressure of the shoulder, the plasticized material combines with the substrate or the deposited layer to form a deposited layer. As the stirring head moves, new deposited layers are continuously added to the deposited layer, eventually forming a three-dimensional solid part.

[0032] like Figure 1 As 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.

[0033] According to the records of the background technology, continuous feeding rod friction stir deposition manufacturing is extremely urgent to be used in the fields of large-scale high-strength structural parts, dissimilar metal deposition manufacturing, etc. Therefore, this application proposes a continuous feeding device for friction stir additive manufacturing.

[0034] like Figure 1 and Figure 2As shown, the continuous feeding device for stir friction additive manufacturing of the present application includes a plurality of feeding mechanisms 100, and the plurality of feeding mechanisms 100 are arranged at intervals along the vertical direction, wherein the plurality of feeding mechanisms 100 each include a feeding seat 110 and a driving rod 120, at least a portion of the driving rod 120 is a reciprocating screw rod 121, the feeding seat 110 and the driving rod 120 are threadedly matched, the plurality of feeding seats 110 each include a feeding port and a clamping member 111, the clamping member 111 is mounted on the feeding seat 110, and is suitable for clamping the additive rod 9, and the feeding ports of the feeding seats 110 of the plurality of feeding mechanisms 100 are directly opposite; wherein the plurality of feeding mechanisms 100 include at least a first feeding mechanism 100a and a second feeding mechanism 100b, and the driving rod 120 includes a threaded A threaded segment, the threaded segment has a first end 121a and a second end 121b along the axial direction of the driving rod 120. When the feeding seat 110 of the first feeding mechanism 100a moves to the first end 121a of the threaded segment of the driving rod 120 of the first feeding mechanism 100a, the feeding seat 110 of the second feeding mechanism 100b is located at the second end 121b of the threaded segment of the driving rod 120 of the second feeding mechanism 100b; when the feeding seat 110 of the first feeding mechanism 100a moves to the second end 121b of the threaded segment of the driving rod 120 of the first feeding mechanism 100a, the feeding seat 110 of the second feeding mechanism 100b is located at the first end 121a of the threaded segment of the driving rod 120 of the second feeding mechanism 100b.

[0035] It is understandable that Figure 1 and Figure 2 As shown, the reciprocating screw 121 usually has two thread grooves with the same pitch and opposite rotation direction, and the two ends are connected by a transition curve. The feed seat 110 is threadedly matched with the drive rod 120, that is, it is matched with the thread segment of the drive rod 120, and the thread segment has a first end 121a and a second end 121b along the axial direction of the drive rod 120. In this way, the reciprocating screw 121 is threadedly matched with the feed seat 110 during the rotation process, so that the feed seat 110 can reciprocate between the first end 121a and the second end 121b, that is, the feed seat 110 will turn to move toward the second end 121b after moving to the first end 121a, and will turn to move toward the first end 121a after moving to the second end 121b. The present application realizes the reciprocating motion of the feed seat 110 without the need for motor reversal through the provision of the reciprocating screw 121.

[0036] The feeding seat 110 is also provided with a clamping member 111, which can have a clamping state and a loose state. When the clamping member 111 is in the clamping state, that is, the clamping member 111 clamps the additive rod 9, the reciprocating screw rod 121 can drive the feeding seat 110 to move along the axis of the additive rod 9 toward the substrate, that is, the feeding direction, so as to feed the stirring head 11.

[0037] In order to realize continuous feeding, the characteristics of the reciprocating screw 121 can be utilized, that is, at least a first feeding mechanism 100a and a second feeding mechanism 100b are provided, and when the feeding seat 110 of the first feeding mechanism 100a moves to the first end 121a of the threaded section of the driving rod 120 of the first feeding mechanism 100a, the feeding seat 110 of the second feeding mechanism 100b is located at the second end 121b of the threaded section of the driving rod 120 of the second feeding mechanism 100b. When the feeding seat 110 of the second feeding mechanism 100b moves to the first end 121a of the threaded section of the driving rod 120 of the second feeding mechanism 100b, the feeding seat 110 of the first feeding mechanism 100a is located at the second end 121b of the threaded section of the driving rod 120 of the first feeding mechanism 100a.

[0038] Specifically, the second end 121b and the first end 121a of the threaded section of the reciprocating screw 121 disposed on the driving rod 120 can be disposed along the feeding direction, or can be disposed in the direction opposite to the feeding direction. For the convenience of description, in the following content, unless otherwise specified, the second end 121b and the first end 121a of the threaded section are both disposed along the feeding direction.

[0039] Similarly, the second feeding mechanism 100b and the first feeding mechanism 100a can be arranged along the feeding direction or in the direction opposite to the feeding direction; for the convenience of expression, in the following content, unless otherwise specified, the second feeding mechanism 100b and the first feeding mechanism 100a are both arranged at intervals along the feeding direction.

[0040] like Figure 1-Figure 3 As shown, when the clamping member 111 of the first feeding mechanism 100a clamps the bar material 9 and moves to the first end 121a through the feeding seat 110 of the first feeding mechanism 100a, the clamping member 111 of the second feeding mechanism 100b is in a loose state and moves to the second end 121b through the feeding seat 110 of the second feeding mechanism 100b. Then the clamping member 111 of the second feeding mechanism 100b clamps the bar material 9 and moves to the first end 121a through the feeding seat 110 of the second feeding mechanism 100b, and the clamping member 111 of the first feeding mechanism 100a is in a loose state and moves to the second end 121b through the feeding seat 110 of the first feeding mechanism 100a. This cycle is repeated to achieve continuous feeding of the bar material 9.

[0041] The present application realizes the reciprocating motion of the feeding seat 110 without the need for the motor to reverse by disposing the reciprocating screw rod 121, thereby realizing continuous feeding, and its structure is simple and reliable.

[0042] In one of the embodiments, the driving rod 120 of the first feeding mechanism 100a and the driving rod 120 of the second feeding mechanism 100b can be respectively provided with a driving device 200 for driving, so as to control the rotation of the driving rod 120 of the first feeding mechanism 100a and the driving rod 120 of the second feeding mechanism 100b, and further control the alternating movement of the feeding seat 110 of the first feeding mechanism 100a and the feeding seat 110 of the second feeding mechanism 100b.

[0043] In one of the embodiments, the driving rod 120 of the first feeding mechanism 100a and the driving rod 120 of the second feeding mechanism 100b can be connected and coaxially arranged, and the threaded section of the driving rod 120 of the second feeding mechanism 100b and the threaded section of the driving rod 120 of the first feeding mechanism 100a can be arranged at intervals along the feeding direction. In this way, a driving device 200, such as a driving motor, can be set to drive the driving rod 120 of the first feeding mechanism 100a and the driving rod 120 of the second feeding mechanism 100b to rotate simultaneously. The present application adopts a single motor to drive the movement of two feeding seats to achieve alternating feeding, and the thrust size is constant without abrupt changes, thereby ensuring the stability of deposition parameters during stir friction deposition manufacturing.

[0044] In the above embodiment, the feeding mechanism 100 may also be provided with a guide rod, which is arranged parallel to the driving rod 120 and spaced apart, and the feeding seat 110 is sleeved on the guide rod so that the feeding seat 110 and the guide rod are slidably matched. In this way, the movement of the feeding seat can be more stable.

[0045] In one implementation, the driving rod 120 of the first feeding mechanism 100a and the driving rod 120 of the second feeding mechanism 100b can be staggered. For example, the first feeding mechanism 100a can be provided with at least two driving rods 120, and the second feeding mechanism 100b can be provided with at least two driving rods 120. The provision of multiple driving rods 120 can share the pressure of the feeding seat, which is conducive to extending the service life of the driving rods 120.

[0046] In one embodiment, the feeding mechanism 100 can also be provided with a guide rod, which is arranged parallel to the driving rod 120 and spaced apart, and the feeding seat 110 is sleeved on the guide rod so that the feeding seat 110 and the guide rod are slidably matched. In this way, the movement of the feeding seat can be more stable.

[0047] In the above embodiment, the driving rod 120 of the first feeding mechanism 100a and the guide rod of the second feeding mechanism 100b can be connected or an integral structure, and the driving rod 120 of the second feeding mechanism 100b and the guide rod of the first feeding mechanism 100a can be connected or an integral structure. It can be understood that the driving rod 120 of the first feeding mechanism 100a and the guide rod of the second feeding mechanism 100b are connected to form a total driving rod 120, and the driving rod 120 of the second feeding mechanism 100b is connected to the guide rod of the first feeding mechanism 100a to form a total driving rod 120. The driving rods arranged in this way can not only drive the two feeding seats 110 to move, but also guide them.

[0048] In the above embodiment, if Figure 1 As shown, the continuous feeding device can be provided with four total driving rods 120, and each feeding mechanism 100 includes two driving rods 120 and two guide rods, so that the feeding seat operates reliably and smoothly.

[0049] In the above embodiment, if Figure 1 As shown, the continuous feeding device may further include a driving device 200, which is coupled to the driving rod 120 and / or the guide rod by power. In this way, the driving device 200 can drive the driving rod 120 and / or the guide rod to rotate, thereby driving the two feeding seats 110 to move. In this way, the present application may use a single driving device 200, such as a single motor to drive the two feeding seats to move, to achieve alternating feeding, and the thrust is constant without abrupt changes, thereby ensuring the stability of deposition parameters during friction stir deposition manufacturing.

[0050] In one implementation, the output end of the driving device 200 is located on a side of the second feeding mechanism 100 b away from the first feeding mechanism 100 a , and the plurality of driving rods 120 are all connected to the driving device 200 by power coupling.

[0051] In one embodiment, the continuous feeding device further includes a driving gear 210 and a plurality of transmission gears 220, wherein the driving gear 210 is coupled to the output end of the driving device 200 by power coupling, and the transmission gear 220 is meshed with the driving gear 210, and the plurality of transmission gears 220 are arranged in one-to-one correspondence with the plurality of driving rods 120. In a specific embodiment, the plurality of driving rods 120 may extend to the transmission gears 220 corresponding thereto and be fixedly connected to the transmission gears 220. In this way, the above arrangement can simultaneously drive the plurality of driving rods 120 to rotate by setting a driving device 200.

[0052] The driving gear 210 may include a meshing portion and a pulley portion, the meshing portion and the pulley portion are coaxial and fixedly connected, the meshing portion meshes with the transmission gear 220, and the pulley portion is coupled to the driving device 200 through a transmission belt power.

[0053] In one embodiment, the continuous feeding device also includes a frame 1, a receiving space is formed in the frame 1, the feeding mechanism 100 is installed in the receiving space, the driving device 200 is installed outside the frame 1, and the driving gear 210 and the transmission gear 220 are installed on the frame 1 and located outside the receiving space.

[0054] In one implementation, the frame 1 further includes a partition 2 , which is located in the accommodating space and between two adjacent feeding mechanisms 100 .

[0055] In one embodiment, the feeding mechanism 100 may further include a lower limit detection element 130 and an upper limit detection element 140, which are arranged on the frame 1 at intervals along the feeding direction, the lower limit detection element 130 is used to detect whether the feeding seat 110 is located at the first end 121a, and the upper limit detection element 140 is used to detect whether the feeding seat 110 is located at the second end 121b. When the lower limit detection element 130 detects that the feeding seat 110 is located at the first end 121a, the clamping member 111 can be controlled to release the bar 9. When the upper limit detection element 140 detects that the feeding seat 110 is located at the second end 121b, the clamping member 111 can be controlled to clamp the bar 9.

[0056] In this way, when the lower limit detection element 130 of the first feeding mechanism 100a detects that the feeding seat 110 of the first feeding mechanism 100a moves to the first end 121a, the clamping member 111 of the first feeding mechanism 100a can be controlled to release the bar material 9, and then the driving rod 120 of the first feeding mechanism 100a continues to rotate to drive the feeding seat 110 of the first feeding mechanism 100a to move toward the second end 121b. When the feeding seat 110 of the first feeding mechanism 100a is located at the first end 121a, the feeding seat 110 of the second feeding mechanism 100b is located at the second end 121b, and when the upper limit detection element 140 of the second feeding mechanism 100b detects that the feeding seat 110 of the second feeding mechanism 100b is located at the second end 121b, the clamping member 111 of the second feeding mechanism 100b is controlled to clamp the bar 9, and then the driving rod 120 of the second feeding mechanism 100b continues to rotate to drive the feeding seat 110 of the second feeding mechanism 100b to move toward the first end 121a.

[0057] Similarly, when the lower limit detection element 130 of the second feeding mechanism 100b detects that the feeding seat 110 of the second feeding mechanism 100b is located at the first end 121a, the clamping member 111 of the second feeding mechanism 100b is controlled to release the bar material 9, and then the driving rod 120 of the second feeding mechanism 100b continues to rotate to drive the feeding seat 110 of the second feeding mechanism 100b to move toward the second end 121b. When the feeding seat 110 of the second feeding mechanism 100b is located at the first end 121a, the feeding seat 110 of the first feeding mechanism 100a is located at the second end 121b, and when the upper limit detection element 140 of the first feeding mechanism 100a detects that the feeding seat 110 of the first feeding mechanism 100a is located at the second end 121b, the clamping member 111 of the first feeding mechanism 100a is controlled to clamp the bar 9, and then the driving rod 120 of the first feeding mechanism 100a continuously rotates to drive the feeding seat 110 of the first feeding mechanism 100a to move toward the first end 121a. In this way, one of the clamping member 111 of the first feeding mechanism 100a and the clamping member 111 of the second feeding mechanism 100b will clamp the bar 9, and then realize alternating continuous feeding.

[0058] In one of the embodiments, when the lower limit detection element 130 of the first feeding mechanism 100a detects that the feeding seat 110 of the first feeding mechanism 100a moves to the first end 121a, and the upper limit detection element 140 of the second feeding mechanism 100b detects that the feeding seat 110 of the second feeding mechanism 100b moves to the second end 121b, the clamping member 111 of the second feeding mechanism 100b can be controlled to clamp the rod 9 first, and then the clamping member 111 of the first feeding mechanism 100a is controlled to release the rod 9. In this way, the rod 9 can be kept in a clamped state at all times, thereby ensuring that the thrust on the rod 9 is stable, which is beneficial to improving the consistency and performance stability of the deposited material.

[0059] Similarly, when the lower limit detection element 130 of the second feeding mechanism 100b detects that the feeding seat 110 of the second feeding mechanism 100b is located at the first end 121a, and the upper limit detection element 140 of the first feeding mechanism 100a detects that the feeding seat 110 of the first feeding mechanism 100a is located at the second end 121b, the clamping member 111 of the first feeding mechanism 100a can be controlled to clamp the bar 9 first, and then the clamping member 111 of the second feeding mechanism 100b can be controlled to release the bar 9, so that the bar 9 can be kept in a clamped state at all times.

[0060] In one embodiment, Figure 1 and Figure 4As shown, the feeding mechanism 100 also includes a lower origin detection element 150 and an upper origin detection element 160, and the lower limit detection element 130, the lower origin detection element 150, the upper origin detection element 160 and the upper limit detection element 140 are arranged at intervals in the direction opposite to the feeding direction.

[0061] The lower origin detection element 150 is used to detect whether the feeding seat 110 is located at the lower origin position, and the upper origin detection element 160 is used to detect whether the feeding seat 110 is located at the upper origin position. The distance between the feeding seat 110 at the lower origin position and the feeding seat 110 at the first end 121a is d1, and the distance between the feeding seat 110 at the upper origin position and the feeding seat 110 at the second end 121b is d2, wherein d1=d2. In the initial state, the feeding seat 110 of the first feeding mechanism 100a can be located at the lower origin position and the feeding seat 110 of the second feeding mechanism 100b is located at the upper origin position. Alternatively, in the initial state, the feeding seat 110 of the first feeding mechanism 100a can be located at the upper origin position and the feeding seat 110 of the second feeding mechanism 100b is located at the lower origin position. In this way, it can be ensured that when the continuous feeding device is running, when the feeding seat 110 of the first feeding mechanism 100a moves to the first end 121a of the threaded section of the driving rod 120 of the first feeding mechanism 100a, the feeding seat 110 of the second feeding mechanism 100b is located at the second end 121b of the threaded section of the driving rod 120 of the second feeding mechanism 100b. Alternatively, when the feeding seat 110 of the first feeding mechanism 100a moves to the second end 121b of the threaded section of the driving rod 120 of the first feeding mechanism 100a, the feeding seat 110 of the second feeding mechanism 100b is located at the first end 121a of the threaded section of the driving rod 120 of the second feeding mechanism 100b.

[0062] In one embodiment, when the continuous feeding device is running, if the lower origin detection element 150 of the first feeding mechanism 100a and the upper origin detection element 160 of the second feeding mechanism 100b do not simultaneously detect that the feeding seat 110 of the first feeding mechanism 100a is located at the lower origin position, and the feeding seat 110 of the second feeding mechanism 100b is located at the upper origin position, a warning is issued. Alternatively, if the upper origin detection element 160 of the first feeding mechanism 100a and the lower origin detection element 150 of the second feeding mechanism 100b do not simultaneously detect that the feeding seat 110 of the first feeding mechanism 100a is located at the upper origin position, and the feeding seat 110 of the second feeding mechanism 100b is located at the lower origin position, a warning is issued. After receiving the warning, maintenance is required to avoid abnormalities during reversing.

[0063] In one of the embodiments, the present application also proposes a continuous feeding friction stir additive device. The continuous feeding friction stir additive device comprises the above-mentioned continuous feeding device and a movable main shaft 10, the main shaft 10 is provided with a rotatable stirring head 11, the stirring head 11 is provided with a stirring head accommodating space for accommodating the rod material 9, and the feeding port of the stirring head accommodating space is directly opposite to the feeding port of the feeding seat 110 of the multiple feeding mechanisms 100. The continuous feeding device continuously feeds the stirring head 11, thereby realizing continuous friction stir deposition manufacturing.

[0064] In addition, the terms "first" and "second" are used for descriptive purposes only and should not 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" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0065] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means 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 may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0066] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A continuous feeding device for friction stir additive, characterized in that: The invention comprises a plurality of feeding mechanisms, wherein the plurality of feeding mechanisms are arranged at intervals along the vertical direction, wherein the feeding mechanism comprises a feeding seat and a driving rod, at least a part of the driving rod is a reciprocating screw rod, the feeding seat is threadedly matched with the driving rod, the feeding seat is provided with a feeding port and a clamping member, the clamping member is installed 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; Among them, the multiple feeding mechanisms include at least a first feeding mechanism and a second feeding mechanism, the driving rod includes a threaded segment with a thread, the threaded segment has a first end and a second end along the axial direction of the driving rod, when the feeding seat of the first feeding mechanism moves to the first end of the threaded segment of the driving rod of the first feeding mechanism, the feeding seat of the second feeding mechanism is located at the second end of the threaded segment of the driving rod of the second feeding mechanism, and / or, when the feeding seat of the first feeding mechanism moves to the second end of the threaded segment of the driving rod of the first feeding mechanism, the feeding seat of the second feeding mechanism is located at the first end of the threaded segment of the driving rod of the second feeding mechanism.

2. The device according to claim 1, characterized in that The feeding mechanism also includes a guide rod, which is arranged parallel to the driving rod and spaced apart, and the feeding seat is loosely sleeved on the guide rod so that the feeding seat and the guide rod are slidably matched.

3. The device according to claim 2, characterized in that The driving rod of the first feeding mechanism is connected to the guiding rod of the second feeding mechanism or is an integrated structure, and the driving rod of the second feeding mechanism is connected to the guiding rod of the first feeding mechanism or is an integrated structure.

4. The device according to claim 3, characterized in that It also includes a driving device, which is dynamically coupled to the driving rod and / or the guiding rod.

5. The device according to claim 1, characterized in that It also includes a driving device, the output end of which is located on the side of the second feeding mechanism away from the first feeding mechanism, and the plurality of driving rods are all power-coupled to the driving device.

6. The device according to claim 5, characterized in that It also includes a driving gear and a plurality of transmission gears. The driving gear is coupled to the output end of the driving device by power, and the transmission gear is meshed with the driving gear. The plurality of transmission gears are arranged in one-to-one correspondence with the plurality of driving rods.

7. The device according to claim 6, characterized in that The driving gear comprises a meshing portion and a pulley portion, the meshing portion and the pulley portion are coaxial and fixedly connected, the meshing portion meshes with the transmission gear, and the pulley portion is coupled to the driving device through a transmission belt power.

8. The device according to claim 6, characterized in that It also includes a frame, a receiving space is formed in the frame, the feeding mechanism is installed in the receiving space, the driving device is installed outside the frame, and the driving gear and the transmission gear are installed on the frame and located outside the receiving space.

9. The device according to claim 1, characterized in that The feeding mechanism further comprises a lower limit detection element and an upper limit detection element, wherein the lower limit detection element is used to detect whether the feeding seat is located at the first end, and the upper limit detection element is used to detect whether the feeding seat is located at the second end.

10. The device according to claim 9, characterized in that When the lower limit detection element of the first feeding mechanism detects that the feeding seat of the first feeding mechanism moves to the first end, and the upper limit detection element of the second feeding mechanism detects that the feeding seat of the second feeding mechanism moves to the second end, the clamping member of the second feeding mechanism is first controlled to clamp the bar material, and then the clamping member of the first feeding mechanism is controlled to release the bar material; Alternatively, when the lower limit detection element of the second feeding mechanism detects that the feeding seat of the second feeding mechanism moves to the first end, and the upper limit detection element of the first feeding mechanism detects that the feeding seat of the first feeding mechanism is located at the second end, the clamping member of the first feeding mechanism is first controlled to clamp the bar, and then the clamping member of the second feeding mechanism is controlled to release the bar.

11. The device according to claim 9, characterized in that The feeding mechanism further comprises a lower origin detection element and an upper origin detection element, wherein the lower limit detection element, the lower origin detection element, the upper origin detection element and the upper limit detection element are arranged vertically spaced apart; The lower origin detection element is used to detect whether the feeding seat is located at the lower origin position, and the upper origin detection element is used to detect whether the feeding seat is located at the upper origin position; The distance between the lower origin position of the feeding seat and the first end of the feeding seat is d1, and the distance between the upper origin position of the feeding seat and the second end of the feeding seat is d2, wherein d1=d2; In the initial state, the feeding seat of the first feeding mechanism is located at the lower origin position and the feeding seat of the second feeding mechanism is located at the upper origin position, or, in the initial state, the feeding seat of the first feeding mechanism is located at the upper origin position and the feeding seat of the second feeding mechanism is located at the lower origin position.

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

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